Inevitable companion garden plot is plant debris in the form of grass and branches. It is impractical to throw away or burn such waste, because it is possible to obtain natural fertilizer from it. It is enough to grind it to the state of chips. A garden shredder can handle this task with ease. However, if there is no financial opportunity to purchase it, then you can make a garden shredder with your own hands. How to do this - this article will tell you in detail.

A garden shredder, also known as a shredder or chipper, greatly facilitates the maintenance process suburban area... With its help, you can easily clear the area from branches and grass. Recycled raw materials can be stored in compost pit to obtain natural fertilizer. It is advisable to use the resulting small wood as firewood for heating the house. Shredded chips from fruit trees are ideal for smoking meat.

Design garden shredder simple enough. It consists of the following main parts:

• bunker;
• drive;
• grinding mechanism;
• metal frame with protective cover.

Some models can be equipped with additional elements:

• a bunker for shredded organic waste;
• a pusher;
• a sieve for regulating the fraction of chips.

The principle of operation of any grinder is the same as that of a meat grinder and is as follows. When the shredder is turned on, the engine starts, which drives the working shaft equipped with the cutting mechanism. At this time, garden debris falls into the receiving funnel and is crushed to a state of fine chips with the help of a cutting device.

Helpful advice! When carrying out work related to the processing of garden waste, you should use personal protective equipment - glasses, gloves, etc.

Chopping mechanism

Before you start creating a homemade shredder, you need to clearly define the type of waste that it will recycle. This directly depends on its design features and performance. Garden shredders are classified according to three main parameters: the type and power of the engine and the type of shredder.

The following chopping options are available:

• milling, for processing hardwood;
• knife universal;
• roller, for grinding thin branches of trees and shrubs;
• with rotating turbines for shredding thick branches;
• hammer, for the disposal of thin branches;
• line-based trimmer for soft debris.

At self-assembly chopper, preference is given to the knife system or typesetting circular saws... You can make a two-roll design, in which two or three knives are installed on a massive disc and rotate towards each other.

Engine type and power

The shredder can be equipped with an electric or gasoline engine. Each of them has important advantages and some disadvantages. The gasoline-powered garden shredder is more mobile. Its operation does not depend on the power supply. It is capable of processing thicker, larger branches. However, such chippers are more bulky and heavy. In addition, they emit harmful substances into the atmosphere in the course of their activities.

Electric shredders are lighter and easier to use. However, they are inferior in terms of power and depend on the energy resource.

The ability to recycle a certain type of garden waste depends on the engine power. For small volumes of waste, where the diameter of the branches does not exceed 20 mm, a 1.5 kW motor is sufficient. If it is necessary to grind branches with a thickness of 20-40 mm, then it is advisable to use an engine with a power of at least 3.5-4 kW. Shredders equipped with a 6 kW motor will be able to cope with large wood 100-150 mm in diameter.

Another design feature of shredders is the type of drive. This function can be performed by a chain, belt or the motor shaft itself, on which the knife mechanism is fixed.

Stages of creating a garden shredder of branches with your own hands

Making a shredder with your own hands is a very laborious process that requires technical knowledge and a high level of practical skills from the master. The whole work consists of two stages. The first, preparatory, is to create a drawing of a garden shredder with your own hands and purchase the necessary materials. The second stage is the assembly of the shredder itself.

Create a shredder drawing

The drawing can be done by hand or use a special design program on a computer. The main structure of the shredder consists of a hopper, a frame, a motor, a shaft with a knife mechanism and a protective cover.

Do-it-yourself examples of drawings of branch shredders clearly show that various crushing mechanisms can be used for the cutting system.

In the case of using a typesetting package of circular saws, the drawing of the grinder will be quite simple. A shaft with fixed circular saws in the amount of 15-30 pieces is installed on a metal frame, which is driven by a motor using a belt drive. For this, pulleys are located at the ends of the shaft and the motor. As the do-it-yourself shredder drawings show, the branches for heating the house are shredded precisely thanks to such a cutting system.

Helpful advice! For more effective work of the shredder between the circular saws, thin plastic or metal spacers should be installed.

To create a shredder with a knife disc shredding system, the diameter is indicated on the drawing cutting disc, the number of knives and their location. The disc itself can be placed vertically or at some angle. The number of knives affects the degree of chopping. They can be from 1 to 3 pieces.

There is an option to create a chipper with two shafts. You can get acquainted with such a grinding system in the video. DIY drawings of a branch chopper with a two-roll cutting system are distinguished by the presence of two shafts with knives at once, which are located between the metal plates. Each shaft is equipped with 3-4 knives. The knives themselves are fixed with bolts and offset to the side relative to the center of the shaft.

Four bearings are fixed in the holes of the metal plates, which are responsible for the free rotation of the shafts. And two gears, driven by a motor, ensure their synchronized rotation. The torque from the engine to the drive is transmitted using a chain or belt drive. The distance between the shafts is selected based on the width of the knives and the thickness of the branches.

Helpful advice! Chopping small branches and grass requires electric motors with big amount revolutions. And for chopping up larger branches, strength is important. Here it is necessary to reduce the number of revolutions for powerful engines.

Required materials for the manufacture of a shredder

To make a garden chipper, where a set of circular saws acts as a chopping system, you need to purchase the following components:

• circular saws in the amount of 15-20 pcs. with a diameter of 18 cm;
• engine;
• 2 pulleys;
• 2 bearings with fasteners;
• metal washers in the amount of 17-22 pieces up to 5 mm thick for separating circular saws;

• profile pipes for creating a frame;
• metal sheet with a thickness of about 2 mm for the hopper and casing.

For a shredder with a knife disc you will need:

• engine;
• sheet metal 2 mm thick;
• sheet of metal and knives for the disc.

To create a dual shaft shredder, you need to purchase the following materials:

• gasoline or electric engine;
• two metal plates 10 mm thick:
• a pair of gears to ensure synchronous movement of the shafts;
• a gear or pulley for transmitting torque from the engine to the shafts;
• a pulley for the motor shaft;

• 5 bearings with mountings;
• chopping knives;
• profile pipes to create a frame;
• sheet metal with a thickness of at least 2 mm to create a receiving hopper and a protective cover.

As can be seen from the list presented, the design of a disc grinder is the simplest and most affordable. However, this shredder can shred branches up to 20 mm in diameter. But the chipper with two shafts can easily cope with large wood with a diameter of up to 80 mm.

Shredder assembly

Having all the necessary elements, you can safely start creating the design of a garden branch shredder with your own hands based on the completed drawing. The assembly of a garden shredder, regardless of the type of mechanism design, consists of several sequential steps:

1. Frame installation.
2. Bunker creation.
3. Assembling the chopping mechanism.
4. Installing the engine and chopping device on the frame.

Creating a shredder with a stacked saw blade package

The shredding mechanism of such shredders consists of circular saws, which, alternately with spacer washers, are mounted on the shaft. Each disc has a variety of teeth that can handle even hard wood. Therefore, it will process soft grass, tops and leaves in a matter of minutes. When the saw teeth are dull, they can be easily replaced with new ones.

The shaft for the shredder can be turned into lathe or used ready-made from the gearbox of an old car. The distance between adjacent saws should be about 10 mm. A smaller gap will lower the work area of ​​the shredder. Making a larger gap will tend to cause small branches to get stuck.

Helpful advice! Do not place the saw teeth on the same line, fixing them on the shaft. Better to set them randomly. This reduces the load on the shredder shaft and motor.

It is better to use an electric motor, which is practically silent during operation and does not emit harmful substances into the atmosphere. For crushing coarse material, you can use a walk-behind tractor, which has great power. The motor should be placed on a movable support so that the tension of the drive can be adjusted.

The frame for the shredder can be welded using channels, corners or profiled metal pipes. A persistent metal profile bar can be welded to the base of the structure, which will become a support for stems and branches during crushing. When creating pedestals for bearings, it is important not to skew. The axes of the motor and shaft must be in parallel planes.

The design of the bunker deserves special attention. It can be executed from sheet metal... The container should be strong enough to withstand the impact of flying chips from branches. With the help of a movable base plate in the body of the hopper, it is possible to adjust the size of the chips. So, smaller fragments are suitable for fertilization, and larger chips are suitable for kindling.

The size of the receiving socket should be larger than the length of the arms to protect them from damage. This also contributes to the ability to guide the branches into the shredder at a comfortable angle.

This do-it-yourself garden shredder of branches and grass is able to cope with both soft waste and hard thick wood. However, its main problem is the clogging of the space between the saws, which needs regular cleaning.

Making a Blade Disc Shredder

You can create such a grass chopper with your own hands from scrap materials. Since it is designed for crushing soft debris, its design will be very simple, but it will not have high rate strength. You can weld a sheet metal hopper, or you can use a regular metal bucket. A case from an old fan will also work.

To create a cutting system on a metal disc, knives are inserted into special slots, which can be pre-made from a leaf spring from a car. The disc is mounted on the shaft. Next is the receiving box. A low-power 1 kW motor is suitable for such a shredder. All the details of creating a garden electric grass grinder with your own hands can be viewed in the videos offered on the Internet.

Assembly Instructions for Double Roll Shredder

The work begins with the creation of the frame. To do this, using an angle grinder from a profile pipe, two workpieces with a length of 80 cm and four parts with a length of 40 cm are cut. Next, short sections are welded between two long workpieces at right angles. The two internal parts must be spaced apart from each other to ensure that the chopping drum is securely installed.

Helpful advice! For the device to be mobile, the structure must have wheels for movement. To do this, two racks are welded to the frame, on which an axle with wheels is attached.

The next step is to create the shafts for the chopping drum. If you plan to install four knives on one shaft, then we use a square metal blank. We make both ends of it round so that they can enter the bearings. For three knives, you need a round blank, in which the central part is sharpened. Three flat cuts are made in it for the subsequent installation of the knives.

To create knives, you can take a small piece of a KamAZ leaf spring. Bolt holes are made in the knives. Then you should sharpen the knives on grinding machine where the angle of the cutting edge is selected with a value of 35-45 degrees. Further, the sharpened knives are applied to the shaft and their attachment points are marked, in which holes are created, and a thread is cut.

Next, we start to create a grinding mechanism. Round holes are made in two metal walls using a welding machine for installing bearings. Using special pads and bolts, we install the bearings inside the metal walls. We insert shafts into the bearings, securely fixing them. They should be located at a sufficient distance to exclude the possibility of their contact. Next, the walls of the drum are connected using metal threaded studs and nuts.

Now we start creating the receiving hopper. To do this, four parallelepipeds are cut from thin sheet metal. Further, each edge is bent by 4 cm. A short section in one direction, a long one in the opposite direction. We connect all the parts using self-tightening rivets or welding. Holes for fasteners are made on the bent edges at the base of the box.

Now gears are put on the shafts to synchronize the movement, and the whole structure is installed on the frame and secured with bolts. Then the motor is installed, which is connected to the shaft by a belt drive or chain. It is better to take an engine of high power, but with a low speed. At the end, a receiving hopper is installed and secured. Then, a protective cover is put on all rotating parts of the shredder to prevent foreign objects from entering the shredder.

The main advantages of such a unit are its high power and technical ability to chop thick branches with a diameter of 20 to 80 mm. This will depend on the number of knives and the number of revolutions. On numerous sites on the Internet are presented detailed recommendations how to make a wood shredder with your own hands. Video examples more clearly display the entire assembly and installation process of a homemade device.

How to make a chopper from scrap materials

Many thrifty and thrifty owners are in no hurry to throw away old tools and household appliances. They find new uses for them. It is worth showing a little imagination, turning on logic and ingenuity, and you can create a real assistant in the household from improvised tools and old parts. Consider some simple options making a homemade chopper of branches and grass from simple and affordable materials.

Shredder from grinder and vacuum cleaner

One of these homemade designs is a do-it-yourself garden shredder made from a grinder, an old vacuum cleaner and lawn mower knives. One well-known inventor Vladimir Belyaev proposed his own chopper of branches with his own hands, the video of the creation of which inspired many to modernize this idea and offer their vision when creating a summer cottage assistant. Next, we will consider one of the interesting and popular options.

To create a simple, but productive design, you will need an old working vacuum cleaner, a Makita grinder with a power of 3.2 kW, lawn mower knives, stable wooden base, receiving funnel and metal table with vertically welded metal sheet.

The receiving funnel is horizontally mounted on a vertical metal sheet welded to the table. This sheet should be thick to hold the grinder attached with bolts and the knives mounted on it. If the seat of the three-blade lawn mower knives is not compatible with the angle grinder, then you need to sharpen them so that the knives sit securely. To prevent the crushed mass from getting stuck between the knives, on a metal sheet a pipe from an old vacuum cleaner is attached, which supplies air. It is desirable that the grinder and the vacuum cleaner turn on at the same time.

The metal table is located on a wooden stationary base. You should also install a protective cover to prevent back movement of the chopped branches.

Such a simple version of a garden shredder with your own hands, the video is a clear confirmation of this, you can easily create at your dacha, without complicated stages of work and the acquisition of additional materials.

Washing machine shredder

Garden Shredder can be crafted from old washing machine... To do this, you will need a body and an engine from technology, an old saw, a bucket and other parts, and tools for fastening the structure.

A side hole is made in the body of an old washing machine for the outlet of recycled materials. Knives are attached to the bottom of the container using a special sleeve, which can be made from pieces of an old saw. An existing one, built into an old washing machine, is used as a motor. The collection container for shredded waste is installed near the side opening.

Drill Shredder

Another elementary invention is a homemade shredder using an electric drill. The principle of operation of this mechanism resembles a vegetable cutter.

To create a structure, you need to take an old stool. Drill a 12 mm hole in it. A housing with a bearing is attached to the back of the stool. A bucket with a hole of the same diameter is installed on the stool and fixed with self-tapping screws. A bearing is inserted into the hole, onto which a shaft is installed with high-speed steel knives fixed to it. A two-mode drill is connected to the end of the shaft from the bottom of the stool through a keyless chuck.

Soft raw materials are thrown into the bucket and an electric drill is started. After thorough grinding to the desired state, the mulch is removed. This design designed for a small amount of recyclable waste.

The process of making and sharpening a knife deserves special attention. One-sided sharpening should be done. The sharpened plane is located at the bottom. For chopping freshly cut grass, the diamond-shaped blade is ideal, in which you can round off the blades. This will allow the grass to slide freely over the cutting edge of the chopping knife without getting wrapped around it.

From the proposed options, we can conclude that you can create a garden shredder with your own hands from any available material. It is enough to have an electric motor adapted for a 220V network, any round container of sufficient size, a steel sheet, a hacksaw for wood or a saw from an old lawn mower to create a cutting mechanism.

Subtleties when choosing a motor for a shredder

A certain engine power ensures the required performance of the shredder. When choosing an engine, you should be guided by some important rules:

1. For small branches, you should choose an engine with a power of at least 2 kW. The higher the power rating, the more productivity and technical capability shredder.
2. For crushing soft waste in the form of grass and leaves, a 1.5 kW engine will suffice.
3. Gasoline engine power must not be less than 6 HP.
4. Engines that are too powerful over 3.5 kW should not be used. They consume a lot of electricity, but this does not achieve the maximum performance of the unit.
5. The speed of the engine does not have a big influence on the performance of the chopper. Here, the frequency of rotation of the knives is important, which is ensured by the V-belt transmission.
6. For reliable chopping of branches, the speed of no more than 1500 rpm should be reported to the knife shaft. This is due to correct selection diameters of the driving and driven pulleys.

Helpful advice! It is better to make pulleys for a belt drive for 3-4 strands. This will allow you to change the speed on the shaft by repositioning the belt, which is necessary for different conditions shredder work.

Top Benefits of Homemade Garden Shredders

A homemade shredder does not require too much respect for itself. It can be used for more than just chopping grass, leaves and branches. It will perfectly recycle any household waste. It can be used to grind the fruit of fruit trees for the subsequent preparation of puree, jam or homemade wine.

Homemade shredders will cope with branches up to 100 mm in diameter, while factory units simply will not let such large plants pass. Also, there is no need to monitor the moisture content of raw materials for processing. And for factory shredders, such negligence is unacceptable. Since in most models the engine is located at the bottom of the structure, the possibility of moisture getting on it must be excluded, which will inevitably lead to breakdown.

An important argument in favor of a home-made device is the cost of the entire structure, which will be much lower than the price of the finished shredder. This also applies to replacing a failed part that is not costly.

In addition, the homemade garden chipper is distinguished by the degree of productivity. All garden waste that ends up on the shredder is instantly processed into small chips.

As you can see from all of the above, you can create a reliable and faithful assistant for chopping garden debris with your own hands from scrap materials. It is enough to have some skills and abilities of plumbing work, to have parts of old equipment in your garage, necessary tools and materials. Further, having chosen the most acceptable way for yourself, sketch out a drawing of a branch chopper with your own hands. Video different options performances of a homemade shredder can be viewed on the Internet. Based on the drawing, prepare all the necessary elements and start assembling the grinder.

If you are not sure about own forces, currently available for purchase homemade shredder branches from the proposed options, which will meet all the requirements, and will satisfy your wishes at an affordable cost.

The garden shredders that you can buy in stores are quite expensive, especially when it comes to popular models from certain brands.

Therefore, some people try to make such devices on their own.

In this article we will tell you about the different models of homemade garden branch shredders for summer cottages and give step by step guide for the manufacture of such devices.

All homemade products can be conventionally divided into 3 types:

• wood chips;
• mulchers;
• shredders.

Chip cutters intended for shredding branches and completely dried coarse green mass, that is, thick stems.

They are poorly suited for processing and grinding fresh or slightly dried green mass, that is:

• leaves;
• herbs;
• tops.

More often a chip cutter made in the form of a rotary chipper... About how this device works, its principle of operation, and how to make it on our own, we talked about and showed on the video in these articles:

Homemade apparatus of this type effectively grinds branches of a certain thickness, turning them into small ones wood chips that can be used as:

• and an agrotechnical garden plot;
• dye and flavor;
• fuel for various products;
• bedding for animals and birds;
• and ovens.

Mulcher intended for grinding fresh and dried green mass, but not suitable for processing dry tops and any branches. Its basis is the line cutting module, which we talked about.

Chopped green mass can be use only as decorative or agrotechnical mulch, hence the name of the device.

The shredder is designed for coarse shredding of branches, so the finished wood chips are used only for heating.

Industrial shredders provide the ability to produce wood chips normal size, but in home-made devices, the most important quality is considered to be the simplicity of design and ease of manufacture, which becomes the reason for the increase in the size of the chips.

Choosing the type of engine: electric or gasoline?

When choosing an engine for a homemade shredder you need take into account the availability of components.

If your garage has a good gasoline engine of suitable power (2–5 hp), then it can be installed on most DIY garden shredders.

Gas engine will make the shredder stand-alone, so it can be used even where there is no way to plug into an outlet.

If the device will work only near the outlet, then it is better give preference to an electric motor... Even if you have to buy it, the difference in operating costs quickly compensates your expenses.

The cost of an hour of operation of an electric garden shredder is 7-10 times less than a device with a two-stroke gasoline engine, or 10-12 times less than a device with a four-stroke gasoline engine.

it connected how with the difference in the cost of electricity and gasoline, and in the cost of maintaining gasoline engines.

Another factor which influences the choice of engine - ease of installation... Gasoline engines work well only when their shaft is horizontal.

Therefore, to connect to the vertical shaft of the shredder, and this is how the mulcher shaft is installed, a gearbox is required that provides a 90 degree rotation. That is, you have to spend money not only on the engine, but also on the gearbox... And the electric motor works well for any shaft arrangement, so a gearbox can be dispensed with.

Drawing up a drawing

In order not to have to redo a partially assembled garden apparatus, it is necessary to correctly draw up a drawing, taking into account the size and shape of all available parts.

This will be helped by numerous forums on which users discuss the most successful configurations and technical solutions.

In addition, they also share their experience of self-manufacturing of garden waste and garbage shredders, uploading not only drawings, but also photos from videos of their devices, and also leave feedback on their work.

When drawing up schemes you be able to determine the location of the mounting holes and welds ... This will allow the individual parts to be made first with advance drilled holes, and then attach the appropriate aggregates to them without fitting.

Ready-made drawings can be found on the Internet, after which, on their basis, you can make yourself new blueprint with dimensions in which there will be the features of the available parts and mechanisms are taken into account.

The main advantage of this method is that it eliminates the need to independently determine and calculate the overall configuration of the finished device and the location of the main elements.

Here are the blueprints for some devices that can be used as basic ones:

1. Drawing 1 - This is the standard design of a stationary rotary chipper that works well as a garden shredder.
2. Drawing 2 - This is the structure of one of the shafts of a two-roll shredder. With some modifications, it can also be used in single shaft shredders.
3. Drawing 3 - Two-roll shredder device.
4. Drawing 4 - Drawing of a grass chopper with an electric motor, however, instead of an electric motor, you can install a grinder or a drill.

Thematic forums

To make a normally working garden shredder of any type, it is necessary not only to understand the general principles of its operation and the requirements for it, but also get acquainted with the experience those who have already encountered such work.

There are many thematic forums on the Internet where users discuss their own homemade products and share their experience of using them, so you can get a lot of important information there.

Self-production

In this section we present a step-by-step guide to independent shredder and mulcher manufacturing, a detailed instructions about creating a chip cutter you can find.

How the mulcher is made depends on the available components.

It can be made from a grinder by installing a fishing line instead of a disc, or from a conventional asynchronous motor with a shaft rotation speed of 1.5-3 thousand rpm.

In the first case, you need to place the grinder with fishing line in some pipe or container which will limit the spread of chopped grass, and in the second - you can make a full-fledged shredder.

Mulcher

For making a homemade garden electric mulcher for processing thin branches and grass will be required:

• asynchronous motor alternating current with a power of 1.5 kW or more with a mounting platform (base) perpendicular to the shaft;
• steel pipe with an inner diameter of 30-50 cm;
• steel corner with a shelf size of 15–30 mm;
• steel bar with a diameter of 8-15 mm.

You will also need a steel plate for attaching the electric motor, an adapter for attaching the drum to the shaft, and a line drum.

If there is no line drum or the mulcher will be used to process tough haulm, then instead of a drum, you can install 1–3 steel strips by placing them under equal angles ... It is advisable to sharpen the edges of the strips, this will improve performance and reduce the load on the engine.

The main thing is that the hole for fastening to the shaft is exactly in the middle., otherwise strong vibration will occur, which will lead to the appearance of a hum and a sharp decrease in the bearing life.

Here the order of actions to be performed to make a mulcher:

1. The pipe is cut on both sides at an angle of 90 degrees. The length of the cut-off section should be 40-60 cm. The plate for mounting the engine is cut to the size of the sole, holes are drilled in the necessary places (for the shaft and mounting bolts), and then the engine is attached for checking.
2. If everything is normal, then the engine is removed and 3 corners are welded to the bottom of the plate located at an angle of 120 degrees relative to each other.
3. On the plate install the engine, fix it with bolts and attach the drum to it. If there is no drum, then instead of it they put steel strips or metal knives from any trimmer. It may be necessary to install an adapter that compensates for the difference in the diameter of the shaft or extension and the diameter of the knife hole.
4. Plate with welded corners installed on the upper edge of the pipe, positioning so that the motor shaft is as close to the center of the pipe as possible, then the corners are welded to the pipe and the excess is cut off.
5. Bolted connection can be used instead of welding, this will complicate the installation, but will greatly facilitate the maintenance of the device. To do this, each corner is cut end-to-end to the wall, then a "heel" is welded, that is, a small steel plate with a bolt hole, to the back of which a nut is welded. Then holes are drilled in the pipe housing and the engine mount is bolted.
6. You can also cut the body (pipe) into 2 parts along the edge of the shaft, then weld fastening plates with nuts to any of the parts, and drill holes in the corresponding places on the other part of the pipe.
7. From a steel bar make a mesh with a mesh size of 3-5 cm... If the body is made non-separable, and the motor suspension is fixed by welding, then the mesh is bolted so that it can be removed for cleaning and replacement of the line. In installations with a collapsible casing or removable engine mount, the mesh can be welded on. Sometimes, instead of a mesh, they make a solid bottom, in which they cut round hole playing the role of a sieve.
8. Legs from the corner are welded to the bottom of the body tilting them outward by 20-40 degrees. The legs must be long enough to fit a bucket under the mulcher. It is advisable to weld a "heel" to the bottom of each leg - that is, a piece of steel plate 5x5 cm in size. The length of each leg, as well as the angle of deflection, must be the same for the whole structure to be stable.
9. Before each launch, open access to the drum and check the condition of the line, change it if necessary. If knives are installed instead of a fishing line, then their condition and sharpening are checked in order to replace or sharpen if necessary.

Schroeder

Despite the fact that the design of the shredder is much simpler than that of many other wood chippers, making it yourself is quite difficult due to the very high total cost of parts that need to be made to order using certain grades of steel.

Therefore, in everyday life, more popular simplified shredder model with homemade knives from car springs and steel corners.

For the manufacture of such a homemade electric garden shredder will be required:

• sheet steel 20 mm thick;
• sheet steel 2 mm thick;
• steel gears of the same size and pitch with an outer diameter of 8 cm or more;
• asynchronous electric motor with a power of 3 kW or more;
• a powerful gearbox with a gear ratio of 50–100 (the larger the gear ratio, the lower the speed of rotation of the shafts, but the higher the torque);
• steel corner with a shelf size of 50 mm;
• spring from a car;
• a flat steel bar with a diameter of 40-50 mm (you can use one of the gearbox shafts or a shaft from some other equipment, if it fits in diameter);
• bearings.

Here procedure:

1. Cut 2 pieces from the steel rod, one 35–40 cm long, the second 40–45 cm long.
2. Cut 4 pieces of a corner 25-30 cm long.
3. Weld on 2 corners for each rod, to make a square shaft.
4. From thin sheet steel cut 4 circles, outside diameter which is equal to the outer diameter of the bearings, and the inner one is equal to the outer diameter of the shaft.
5. Circles put on the shafts and welded to the corners.
6. 8 pieces are cut from the spring, the length of which is 2 cm less than the length of the shaft, after which one of the long sides is sharpened at an angle of 30–40 degrees. The smaller the angle, the better knife will chop wood, but the faster it becomes dull.
7. 3-4 fixing holes are drilled in each knife, then drill the holes matched with them in the corners of the shafts (the diameter of these holes should be slightly smaller so that threads can be cut into them). In this case, each knife should protrude so much that the knives of both shafts touch each other when they meet. A thread is cut in the finished shaft holes.
8. From fat steel sheet cut out the body parts... Its size can be any, the main thing is that the width is equal to the distance between the bearings on the shaft, and the height is not less than the distance between the distant knives of both shafts. In total, you need 8 parts - 2 side walls, top and bottom walls, 4 amplifiers.
9. In the side walls cut holes for bearings... This is a very demanding operation, so an error of even 1 mm will lead to serious problems.
10. The side parts are welded to the lower ones, then the amplifiers are welded - 2 pieces from the top from the front and rear sides, 2 pieces from the bottom also from the front and rear sides.
11. Choose a method of attaching the gear to the shaft- most often, welding or a keyed connection is used for this (this option is only suitable for processing thin branches, an attempt to chop thick branches can lead to a key break).
12. Connect presenter(longer) shaft with gear... To do this, you can use a chain or gear drive, as well as a reducer made of thick-walled steel pipe.
13. Connect an electric motor to the gearbox.
14. If the case is unstable, then from below weld 4 legs set aside at an angle of 25-35 degrees and equip them with 5x5 or 10x10 cm heels.

Choppers from grinders and other tools

As a basis to create a garden shredder can be used:

• grinder;
• drill;
• trimmer.

Bulgarian, due to the high engine power and high rpm, it can chop thin branches and grass, but for this it must be rigidly attached to vertical surface and make an entrance hole in this surface.

For chopping grass, you can use a three-blade trimmer knife, and for processing branches, the knife will need to be made of tool steel to order. You can make a knife from tough steel, and replaceable blades from the most durable.

Drill used in the same way as the mulcher engine, fixing in any way. Due to the low rotation speed of the chuck, it makes no sense to install the drum, therefore, a shaft is made to which the knives are welded or otherwise attached.

Trimmer also used in conjunction with the mulcher body, fixing so that the drum with the line is parallel to the surface of the sieve.

Related Videos

This video shows a homemade branch shredder in the process:

Output

The main advantage of a homemade device is that it costs many times less than one bought in a store. In addition, by making your own garden shredder, you can optimize it to handle specific materials.

Now you know:

• what are homemade devices;
• what is needed for their manufacture;
• how to make them yourself.

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The garden shredder is a machine designed for recycling vegetable waste formed during mowing of the grass cover, sanitary or annual pruning of trees, grapes and various shrubs. The resulting small pieces of grass or twigs can be used as livestock feed or fertilizer... The use of this unit allows gardeners, owners summer cottages and lovers of beautiful lawns get rid of organic waste faster and with less labor. The device is relatively easy to arrange, for this reason it can be assembled with your own hands without special financial costs from old parts and scrap materials. This allows you to save money on the purchase of a ready-made factory device.

In order to independently assemble a grass and branch shredder (shredder) at home, you must first understand the device of the mechanism, as well as the principle of its operation. This will help to properly assemble the equipment and, if necessary, make changes to its design.

A home-made unit, designed for chopping mowed grass and sawn branches up to several centimeters thick, has the following main structural units:

• engine;
• knives mounted on the working shaft;
• frame (usually metal);
• protective cover;
• a box designed to receive cut vegetation;
• starting system.

The technique itself can be done in a stationary or mobile form. To create the latter option, you will additionally need wheels, as well as a handle. To make a frame, use metal corners or ready-made frames from workbenches. Boxes for recycled vegetation are made of plastic buckets, tin, bags. The protective cover around the knives must be thick and strong enough so that it does not wear out quickly from the action of the milled vegetation.

When processing plant debris, shredded pieces can fly out of the hole through which it is fed. Therefore, the neck is covered with a lid or simply with a cloth, for example, a bag.

The work of the shredder is that the rotation from the motor shaft is transmitted directly to the blades or through a chain / belt drive. The vegetation chopped up by the blades enters the box. In this case, the final product is immediately ready for use.

By principle of action some homemade shredders are comparable to a meat grinder (pull in and then grind organics), while others are comparable to a coffee grinder.

Varieties of engines for assembling homemade products

As a drive for homemade products they use electric and gasoline engines taken from unused equipment. Each of these two options has its own advantages and disadvantages. Models with an internal combustion engine are more convenient in that their operation does not require the presence of a power supply network nearby. But in general, they are more expensive and have a more complex structure than their counterparts equipped with an electric motor. Therefore, it is easier to do electrical engineering, in addition more compact.

The maximum thickness of the cut branches that the chipper can grind depends on the power of the electric motor installed on it and the characteristics of the blades.

1. Models with a motor up to 1.5 kW are capable of grinding sticks up to 20 mm in diameter. They are designed for low intensity work.
2. If an electric motor from 3 to 4 kW is installed, then such units can chop branches already up to 40 mm thick.
3. More powerful electric motors (over 4 kW) are used to make a shredder for wood with a diameter of 7-15 cm.

To create a homemade shredder, you can use electric motors from a grinder, washing machine, trimmer. They must be adapted to work from a stationary network with a voltage of 220 V. In order to grind material of the greatest possible thickness at home, it is recommended to equip the shredder with an electric motor of 1500 rpm with a power of about 3.5 kW. This parameter for internal combustion engines corresponds to 5-6 horsepower.

Engine from old washing machine

Types of cutting attachments used

Homemade products, like factory units, are equipped with cutting attachments of various types:

• disc (with three blades);

• milling;

• milling and turbine (universal).

The first variety is flat blades. When rotating, they grind plant debris. If you have to recycle branches, then these blades quickly become dull. Milling knives are a cutting shaft in the form of gears from circular saws. They finely grind dry waste from branches and grass, and wet ones clog cutters. Turbine milling cutters are capable of handling thick and not dried branches, but making them yourself is difficult.

At home, knives from lawn mowers or made from wood saws are often used.

It should be borne in mind that the installed cutting attachments directly depend on the degree of processing of plant waste... At the exit, they receive pieces of branches from 10 cm in length or shavings, dust.

Garden Shredder From Washing Machine

Old washing machine Soviet production with a metal body is a technique that contains almost all the necessary parts for assembling a garden shredder. You only need knives with fasteners, as well as a wire for an extension cord.

You can use an old wood saw to make a cutterhead.

Of the tools you will need:

• angle grinder;
• pliers;
• spanners;
• screwdriver;
• electric drill;
• hammer;
• tape measure with a marker.

The washing machine engine has a low power (different for different models), indicated in the instructions for household appliances or on the nameplate of the electric motor. Due to the fact that usually its value does not exceed 500 watts, with the help of the created unit it will be possible grind only straw or grass.

A washing machine shredder is made as follows.

1. The body of the machine is cut in height so that it is convenient to work with the unit.
2. The side at the bottom is carved into it rectangular hole grinder 20 cm wide and 7 cm high, designed for ejection of ground plants.
3. Around the slot, a kind of casing is made of tin, which will guide the grass mass into the collection container, while preventing it from flying around the sides.
4. Make legs.
5. Attach the body to the stand.
6. 2 holes with a diameter of 7 mm are drilled on the shaft of the electric motor. Then a threaded sleeve is pushed onto it, as well as holes at the end longer than 5 cm, fixing it with bolts.
7. An electric motor is attached under the bottom of the box using studs and nuts.
8. Inside the casing, the knives are fixed on the sleeve, placing them above the hole for ejecting grass or at the same level with it.
9. The box is attached by welding or bolts to the stand.

The result is a technique similar to the one shown in the photo below.

Start button will fit from a converted washing machine. You just need to take care to connect an extension cord of sufficient length.

The device and operation of a grass cutter from a modern washing machine are shown in the video

Homemade grass grinder from a grinder

Grinder grass chopper is a fairly simple and quickly implemented option. To implement the project, you will need to stock up on the following details and materials:

• steel corners;
• metal container (conventional boiling);
• homemade or ready-made knives (for example, from a lawn mower);
• fasteners;
• sheet tin.

Of the tools you will need:

• electric drill;
• welding machine and electrodes to it;
• angle grinder to cut corners;
• spanners.

To assemble a shredder with your own hands on the corner base grinder, capable of grinding not only grass, but also branches up to 4 cm thick, it is recommended to use an electric tool with a power of over 3 kW.

The creation of a grinding unit is carried out in the following sequence:

• the corners are cut into pieces with a grinder;
• a frame resembling a chair is welded from them;
• weld on a shelf from a piece of sheet metal;
• to the frame made (on the stand), attach the grinder with clamps, placing it with the shaft to the top;
• cut a hole about 10 by 10 cm on the side of the boil;
• a sleeve, for example, made of tin, is attached to the slot, through which the ground plant mass will be dispensed from the container;
• make a hole in the center at the bottom of the boil;
• install the container on the grinder shaft and attach it with bolts or self-tapping screws to the metal frame;
• place a knife or disc on an angle grinder.

As a result, you get the design shown in the photo below.

The dimensions of the corners are selected individually so that it is convenient to handle the mechanism.

It should be remembered that the frame must be stable. The safety of working with the device will depend on this.

A bucket or other container is placed under the pipe for dispensing chopped grass with branches while working with the unit so that the processed plants do not scatter.

The created device can be improved. This will require nozzle on the grinder shaft about 15 cm long with two knives: at the upper end and in the middle. The blades are separated by a mesh fixed to the wall of the casing.

Grass cutter from trimmer

A garden shredder can be made using a gasoline or electric trimmer. In this case, the tool will work upside down... To create equipment designed to chop grass and thin twigs, you will need, in addition to brushcutters with cutting attachments, the following materials:

• a plastic or metal container with a volume of at least 50 liters;
• about 1 sq. steel mesh with small size cells;
• about 3 meters of metal tube (aluminum or steel) half an inch in diameter;
• a piece of board or moisture-resistant chipboard, plywood of such a width that a trimmer fits on it;
• clamps that will attach the brushcutter to a wooden base;
• self-tapping screws, bolts, nuts, washers;
• wooden blocks (5 by 5 cm is enough).

To assemble the chopping mechanism from the trimmer, you will need to use the following tools and devices:

• a screwdriver or a screwdriver with bits;
• electric drill with a set of drills for wood and metal;
• an electric jigsaw with files for cutting metal or its manual analog;
• hammer;
• open-end or socket wrenches;
• punch;
• an anvil or a flat iron plate.

Punch it is necessary to make it convenient to drill holes with an electric drill. This tool point to the point where you want to drill through the metal. Then they hit him with a hammer. The drill does not slip out of the recess obtained while drilling a metal part.

Hole punch set

Preparatory activities

A brush cutter is made in a number of stages. Initially prepared in capacity where the grass and branches will be milled:

• markings are made at the bottom (along the perimeter) for four trapezoidal holes with rounded corners;
• drilled in each drawn segment of the hole with a cross section of 1 cm;
• a jigsaw file is inserted into them and trapeziums are cut;
• process the sections with a file or sandpaper;
• a hole is drilled in the center of the bottom for the chopper shaft;
• a circle is cut out of a steel mesh with dimensions along the diameter of the bottom;
• with the help of small scraps of boards or blocks, the prepared mesh fragment is fixed to the bottom of the container;
• legs are made of metal tubes for a container, attaching them to the tank with bolts.

Wooden pieces are fixed with self-tapping screws, twisting them from the inside of the tank into metal jumpers between the cut-out trapezoids. In this way, the net is securely attached to the bottom of the container.

Legs do in the following way:

• bend the tubes in a vice or with a pipe bender in the form of the letter "P";
• the ends of future supports are flattened with a hammer;
• 2 holes are drilled in them on each side (6.5 or 8.5 mm in cross section);
• fit the workpieces to the bottom of the container and mark the points of the bolted joints;
• drilled at the hole mark;
• using bolts with washers and nuts, attach the footrest to the casing.

After preparing the casing to reduce dimensions of the created mechanism, perform the following operations:

• disassemble the trimmer by disconnecting the motor, bar and cutting attachment from each other;
• a fragment of about 20-40 centimeters in length is cut off from the bar with a cable;
• collect a brushcutter;
• check the performance of the equipment.

Chopper assembly

If the trimmer works well after assembly, then a grass trimmer is created from it.

1. The brushcutter engine is attached to the board with clamps.
2. Fixed on wooden base bar, using clamps and a brushcutter handle.
3. Connect the cutting attachment to the end of the rod, previously inserted into the hole at the bottom of the casing.
4. The mechanism is started and tested in operation.

After the actions taken, you will get an aggregate, a photo of which is presented below.

If the trimmer used to assemble the shredder is equipped with a gasoline engine, then the motor is positioned on the base so that it is convenient to fill in fuel, start the device and adjust its operation (speed).

Cutting attachments are equipped with knives or fishing line - it depends on the thickness of the plant stems to be chopped.

What else can you make a shredder

There are many different options for creating garden shredders with your own hands: from the simplest ones, which only allow you to grind the grass, to more structurally complex, powerful units designed for wood up to 10 cm thick. Accordingly, for the practical implementation of the conceived, different details, different costs of time and money will be required.

To collect equipment for processing plant waste, in addition to the considered options for old or unnecessary tools or equipment, you can use the following devices:

• drill or hammer drill;
• an old working vacuum cleaner;
• unnecessary power saw;
• motor from the pump;
• gasoline or electric walk-behind tractor;
• any electric motor of suitable power.

A drill with a perforator, if you use them to grind the grass, does not need to be altered at all. It is enough to do only blade attachment... The created device will work like a blender, crushing soft plant stems in a container in small portions.

The nuances of operating homemade equipment

A self-made shredder is essentially three in one: a chopper for branches, a straw chopper, a mechanism for cutting grass. It helps to significantly facilitate domestic work associated with the disposal of plant waste, as well as feeding poultry and livestock.

If you have to process grass in small quantities, for example, for chickens, geese, ducks, then quite simple devices that work from human muscle power are enough, for example, a hand pruner.

For homemade electrical appliances, it is recommended to install separate differential machine, to provide reliable protection from electric shock in case of unforeseen circumstances. In any case, making a garden shredder yourself, you must follow the safety rules. It is also worth adhering to them during the operation of the mechanism. It is recommended to wear goggles, suitable protective clothing and check the reliability of fastening of structural elements before working with equipment. When creating a homemade unit, the forthcoming amount of work should be taken into account, as well as the nature of the vegetation being processed, in order to select the engine of the required power and the desired design knives. This will allow the made device to cope with the assigned tasks without any problems.

Every summer resident knows how difficult it is to dispose of numerous branches and other wood litter. It takes a lot of time and effort to saw and burn wood. To acquire special equipment very expensive and impractical, but you can make a wood shredder with your own hands. It is enough to prepare necessary fixtures and strictly follow the instructions.

Principle of operation

It is not so difficult to make a wood chipper for chopping wood with your own hands, but such an apparatus will become irreplaceable assistant any gardener. Having a homemade firewood shredder on the farm, you can recycle in a short time big pile branches, while receiving shavings and sawdust, which are suitable in the form of compost or fuel.

To make a wood shredder with your own hands, you need a diagram. You can use the design of the factory device, for it the easiest way is to select the necessary parts. But before that, you need to understand the principle of operation of the device. If you do not do this, then you will not be able to make a wood shredder.

In fact, this device is very simple. It includes an engine, a shaft, cutting elements, a frame, a protective shell, and a receiving compartment with which the tree gets inside. In addition, it is best to install such equipment on a two-wheeled base, then it will be much easier to move this heavy structure.

The operation of such a device occurs according to the following principle: the rotation of the motor begins to move the shaft using a chain or belt. After the equipment enters wood material, its knives are processed into very small pieces, after which the sawdust comes out through a special hole. The type of operation of such a device resembles a kitchen meat grinder.

Even before purchasing the necessary parts, you need to decide on the exact purpose of the device. Its power and the price of parts will depend on which branches and boards will be chopped on it.

Engine selection

For a summer cottage shredder, they are suitable as gasoline engines, and operating from the electrical network. Each of them has its own characteristics. For large branches, a petrol-powered mobile engine is more suitable as it can be used throughout the entire area. But with electrical appliance this cannot be done, since it needs a power source. But it is more compact than gasoline.

In addition, devices equipped with an electric motor are lighter and more convenient to use, but it will not be able to process large elements of wood, since it has low power.

When choosing an engine for a wood chipper in Tyrsu, you must consider:

• for processing branches no more than 2 cm thick, there is enough power up to 1.5 kW (how to make a branch shredder with your own hands);
• for branches with a thickness of about 5 cm, it is best to take motors with a power of 4 kW;
• large and thick branches with a diameter of 10-15 cm can be processed by an engine with a power of 6 kW or more.

But still for garden work, when it is necessary to process branches of different thicknesses, it is better to purchase a universal engine, the power of which ranges from 4 kW for an electric one and from 5 horsepower for a gasoline analogue.

Cutting elements

Another main detail in homemade unit- knives. When choosing this part, it must be borne in mind that a simple disc will only be able to process thin branches. Devices that are equipped with a combined design will cope even with thick branches, while processing them into very small chips. Therefore, if you plan to use the chips as fuel, then it is better to equip the shredder with just such cutting elements.

The following knives are commonly used in garden shredders:

But right away you need to add that it is very difficult to make such knives yourself, so it is better to purchase them in specialized stores. If you wish, you can do homemade knives... Mostly used are designs of knives and special discs, as well as a two-shaft system with knives installed on it.

Shredder drawing

The crusher manufacturing process includes three stages. At the first stage, you need to make a drawing, then you should prepare the material and tools, and on the last stage the device is assembled directly.

For the manufacture of the unit, you can use the following diagram.

It is not necessary to come up with your own design, you can use a simple scheme, and already in the process of work, upgrade the device by adding something of your own.

Necessary materials

When creating a drawing, it is worth paying Special attention on the location of the cutting elements, as well as on the cut angle. Before work, you need to prepare materials:

If all the materials are prepared, the drawing is made, then you can start assembling. All saws are mounted on a prepared axle. They should be sized to match the cutters. Then it is necessary to secure the discs with prepared nuts and washers. Such a fastening has its own characteristics: between the saws it is done using thin washers, then the discs will not touch each other. The number of saws should be 1 unit greater than the number of washers.

After fixing the axle, you need to start installing the pulley. For good rotation of this part, you need bearings with a diameter of 2 cm.

Assembling the frame

After assembling the main mechanism, it is necessary to make a frame. To do this, you will have to purchase special pipes. Using a welding machine, weld the pipes together and reinforce the structure with metal profiles, they must be mounted inside the frame. This design will strengthen the bunker and the block that will chop the wood.

Then a metal sheet is welded onto the finished frame and done in it small holes, which are intended to mount the drum and motor. To give homemade apparatus stability, it is necessary to provide it with strong legs.

After that, you have to install a disc for belt tension on the device. It is necessary to do this in such a way that the disks on the device can move freely, then it will be possible to easily and easily adjust the belt.

Pull the prepared casing onto the disc system, and place and fix the hopper over the cutting elements. After that, the wood chipper can be used for its intended purpose.

To make an aggregate with which you can easily chop wood, it is not enough to purchase the necessary parts and find good drawing... You will need to have at least minimal experience in the locksmith profession. And you also need to know a few subtleties of making a crusher, only in this case the home-made device will work properly and efficiently.

When assembling the device, it is necessary to take into account some points:

Here are some basic rules to keep in mind when making a wood chipper. The presented scheme will help to create a practical, high-quality device that, with proper and careful operation, will serve the summer resident for a long time, and also save him from numerous branches, boards and other wood debris.