Homemade branch crusher drawings. How to make a garden shredder with your own hands. Drawings of various designs of garden shredders

An experienced gardener knows perfectly well that every autumn and spring you need to cut tree branches and clean them. But branches from such pruning are very inconvenient waste. Collected in one pile, they take up a lot of space, and you can’t put them all in the oven at once. And so it takes a long time to chop them with an ax or saw them. The most suitable option for a young owner is to make a branch chopper with your own hands.

Such structures in everyday life are called differently. For example, the names of a wood chipper, a shredder, a wood chipper or a wood chipper are known. But that's not all. And despite the many names, the design and structure of such devices almost always remain identical.

They consist of the following elements:

In fact, the difference between many models is in the design of the cutting mechanism, and all other parts have only different sizes.

Basically, the following solutions are used to create a crushing system:

In order to increase the torque and power during cutting, a flywheel is used for such designs, which is mounted on the free part of the shaft. But for a disk crusher, it makes no sense to fix it, since the crusher disk itself acts as a flywheel.

Recycled branches are very often used by gardeners as a basis for compost. It is also possible to make braces from such shavings and heat the house or heat them directly with shavings.

When you choose the type of construction, you can safely proceed to support all the necessary parts and tools.

Choice of engine and belt drive

How thick the branches can be processed will directly depend on the engine power. Such a motor can be purchased on the market, with the necessary parameters and technical characteristics. But it is better to remove the engine from old equipment or buy it. Thus, you can save a lot of money.

To make the right decision on this choice, you need to listen to a few tips:

The engine speed when choosing is not so important, since they can be increased by a pulley due to a belt drive.

In order for the branch cutter to successfully process tree waste, it is necessary to ensure that the engine speed is at least 1500 per minute. In this case, it is not the speed of the knives that matters, but the torque or the applied force. The distance between the pulleys also does not play a big role. The only nuance in this case may be a decrease in efficiency and belt tension force.

Before ordering the production of pulleys from a turner, you need to think about the purposes for which such a design will be used. Perhaps it makes sense to make several streams in the pulley, with the help of which it will be possible to easily change the speed of the cutting shaft. For example, you can set it to lower speeds when working with grass and corn stalks, and to high speeds when processing branches from trees.

Necessary materials

The ideal option to save money when choosing and preparing all components is to find them and remove them from old equipment. It is not so difficult to find them in the dacha economy.

To install saws on the shaft, you need to cut the thread. As a flywheel, you can use a steel disk 1 centimeter thick. As an alternative, you can use a ready-made flywheel from agricultural machinery or a conventional VAZ car. You also need to prepare a base plate for branches 1 centimeter thick. It can be cut from steel plate.

Frame production

Regardless of the chosen type of construction and its motor, in any case, you need to make a frame for it. It consists of a frame on which the entire mechanism and a knife switch are installed.

It can be welded from squares and shaped pipes using the following recommendations:

Before creating shredder drawings with your own hands, you need to foresee the location of the engine. It must be placed inside the frame so that it does not protrude beyond the edges. This applies to all models.

The most difficult operation in the production of such an apparatus is the turning of the shaft and the milling of the knives from the spring and their sharpening. These services will cost money, since it is unlikely that you will be able to do them yourself. This task can be solved more easily if it is possible to remove a solid shaft from old equipment, for example, from a circular saw.

As an alternative to cutting wood chips, you can use the circular saw itself. You need to install a cutting mechanism on the circular drive and you're done. Also, the device can also be powered by a mini tractor engine, you just need to make the correct belt drive.

The twig shredder is one of the gardener's essential tools. After all, everyone who cares for the territory has to regularly cut trees, resulting in waste. It is problematic to burn such garbage in the oven without first crushing it with an ax, and making a huge fire in the garden is also impractical. The solution could be an electric garden shredder. After being crushed, the branches turn into solid fuel or compost.

Currently, wood shredders are called differently: wood chipper, wood chipper, shredder, wood chipper, wood chipper, knot crusher, device for processing plastic, paper and sawdust, etc. The device consists of the following units:

As for homemade choppers, they differ only in the design of the cutting mechanism, and the rest of the parts in them may have different sizes. If you are planning to make a wood chipper with your own hands, drawings and diagrams will be the first thing you need. They can be found on the Internet. Here are the most popular solutions:

To improve the performance of the grinder, a flywheel is often installed that fits on the free end of the shaft. In disk models, this part is replaced by a heavy metal circle with knives.

A wood chipper is a very handy tool. However, not everyone can afford such a purchase, so most gardeners prefer homemade solutions. But is it possible to create a device without the appropriate metalwork and welding skills and tools? Unfortunately no. Even a simple wood chipper based on circular saws is created subject to strict instructions. In addition, for the creation of shafts and housings for bearings, you need to turn to professional craftsmen. The whole process can be divided into the following steps:

When creating, you should be guided by the following rules:

1. If the priority is to obtain small wood chips with minimal resources, give preference to models from circular saws.
2. If you are going to grind small diameter branches into a larger fraction, a cutting mechanism, such as a jointer, will be the ideal solution.
3. If you want to cut branches in large quantities, equip disc crushers.

By the way, small chips and wood chips are often used to make compost and mulch. In addition, fuel briquettes are created on its basis, which are then used to heat private houses.

If you have decided with choice of chippers, start harvesting parts, materials and equipment. Before that, however, there are a few key tasks that need to be completed.

Engine selection and belt drive definition

An indicator such as drive power indicates the thickness of the branches that a home-made device can process:

However, the number of revolutions of the electric motor practically does not play a role, since the required rotation speed of the cutting elements is provided by a V-belt drive.

To wood shredder coped with his duties with a bang, the knife shaft should operate at a speed of no more than 1500 rpm. Such indicators can be achieved by choosing the appropriate diameter of the driving and driven pulleys. It is not the speed of the blades that is decisive, but the resulting torque or force. . It also makes no sense to give special attention to the distance between the pulleys and the length of the belt, with the exception of too long belts, which significantly reduce the efficiency of the transmission.

As an example, we can choose the following calculation: we take an electric motor at 2800 rpm, which will be installed on the crusher. The ideal solution would be to reduce the speed on the shaft by half, to 1400 rpm. In this case, the pulley diameters will be two times different. For example, the size of the driving pulley is 100 millimeters, and the diameter of the driven pulley reaches 200 mm.

When ordering pulleys for V-belt transmission in a lathe, please note: it is better to give preference to pulleys for 3 or 4 streams, so that after that you can change the speed on the working shaft by shifting the belt. In this case, it will be possible to adjust chopper for different working conditions, for example, for processing corn stalks, sunflowers or grass.

Preparation of materials

To assemble the chopper frame, the following types of rolled metal are used:

The power plant is fixed on a steel sheet 10 millimeters thick (dimensions are determined by the distance between the mounting holes). The following options are used as a belt tensioner:

1. The holes in the plate for mounting the motor are made oblong, which allows you to push it back and fix it with bolts.
2. The plate is mounted with one end on a hinge, as a result of which the belt is pulled up by the weight of the electric motor. On the other side, it is fixed with stud nuts.

To create a simple design shredder, you need to purchase 20-25 carbide-tipped saw blades and a similar number of spacer washers with a diameter of 20 millimeters. As a result, a working part is created with a width of about 80 millimeters, which can be increased by adding saws.

The thickness of the teeth of a circular saw is greater than the steel base, so it is forbidden to fix the tools close to each other. To compensate for the width of the teeth, it is customary to use washers that are placed between the saws.

The shaft, driven by a belt, is turned on a lathe from a steel rod. However, before manufacturing the part, 2 bearings should be made, under whose seat size the shaft will be machined.

In addition, bearing housings with mounting flanges should be equipped. Often they are bought ready-made in the secondary market or in specialized stores.

A good alternative can be rear axle bearings with a diameter of 25 mm - from the classic Zhiguli. In this case, the role of the shaft will be performed by a finished stud with nuts.

To fix the circular saws on the shaft, threads are cut.

Frame manufacturing features

Regardless of the type of crushing equipment chosen, it must be equipped with a key element - a bed, where a drive and a chipping mechanism will soon be installed. It is customary to cook the device from corners or pipes, following the following step-by-step guide.

Remember to think about where you will install the electric motor. For homemade crushers, the best solution may be to install the motor in the frame alignment so that it does not stick out beyond its dimensions. A similar rule applies to other types of crushers.

Chopper assembly

To assemble a wood chipper from a package of circular saws, follow the instructions:

Lubricate the bearing cages immediately prior to assembly. Install the saw blades so that the tooth profiles do not match.

To fix the counter knife, it is better to use bolts rather than welding, threading them through oval-shaped holes.

Grass chopper to help the gardener. A beautiful and fruitful garden, where it is always pleasant to relax and enjoy its magnificence, is the result of the owner's painstaking work. We all know that in order to have a good result - green vegetation, juicy fruits and vegetables - you need to fertilize the soil, providing it with all the necessary organic substances.

grass grinder

The ideal food for the soil is compost. Composting is the introduction into the soil of decomposed organic compounds obtained as a result of decay of materials: leaves, stems, tops, cuttings, various plant and animal waste.

Necessary parts for its manufacture:

• motor;
• knives or discs;
• shaft;
• bolts, nuts;
• container;
• protective frame;
• auxiliary materials: screwdriver, grinder, hammer.

Such a device works close to the action of a food processor. The voltage from the motor goes to a shaft with knives that grind incoming branches or grass, and then the processed material exits through a special hole in the box and enters the compost, animal and bird feed.

Homemade chopper

This unit can be easily made with the help of improvised materials that every owner has in his house, and the missing parts can be purchased on the market. On the net you can find a video with a step-by-step assembly of shredders. The main thing is to decide on the type of device, draw drawings and prepare the necessary parts for assembly.

Types of grinders

Consider what are the types of grass grinders:

Petrol

Devices with a gasoline engine have a higher power, allow you to grind not only grass, but also larger branches anywhere in the garden, regardless of the presence of the mains. Suitable for large areas and vegetation of large diameter.

Electrical

Work only from the network, less powerful. They are easy to use due to their compactness and light weight. Great option for gardeners. For chopping grass and branches of small diameter, a garden unit with a power of no more than 1.5 kW is suitable. However, such devices do not withstand long-term continuous loads. For a longer amount of work, it is better to choose motors with a power of up to 4 kW. This garden unit is very handy.

Homemade grass chopper can be made using:

• Drills

Suitable for cutting grass of small volumes (mainly for feeding birds and cattle).

Required materials:

• Drill with power up to 1 kW;
• knives;
• bolts and nuts;
• container for grass (bucket).

Assembly is quite simple, the only task is sharpening knives. They should be diamond-shaped with one-sided sharpening pointing down. This shape will protect the knife from the accumulation and winding of grass on its surface. After assembly, you need to place the grass in a bucket, connect the device to the mains and chop the vegetation.

• cultivator

This method is close to the first option. It differs in that it makes it possible to process much larger volumes of vegetation.

The choice of materials for the manufacture of grass chopper

Assembly materials:

• a cultivator that can be used as a drive;
• a steel knife cut from a canvas and sharply sharpened;
• self-tapping screws;
• a plastic container where grinding will take place;
• square top and legs.

To assemble the design of the garden shredder, you need to attach the drive to the table, after making a hole in the table top. Then, using staples and self-tapping screws, tighten the casing of the machine to a wooden block. For a bell, make a funnel from improvised materials (for example, a sleeve from a drain) and fix it so that it does not interfere with the installation of the cultivator. Fix the bar itself with self-tapping screws to the table. At the end, you need to install limiters with the help of legs to prevent the tabletop from sliding.

• Soviet vacuum cleaner

For this version of the manufacture of the chopper, a case from a vacuum cleaner from the times of the USSR is suitable, which has a convenient opening for loading grass. This device differs from the previous ones by the presence of a second hole through which chopped grass passes.

To assemble this design you need:

• powerful motor about 180 watts;
• vacuum cleaner body;
• knives, bolts and nuts;
• metal legs;
• bucket for receiving the product.

First you need to prepare a sleeve for attaching the knives and connecting the engine to the body. Pre-cut the knives and sharpen them well, making a hole in them for the bushing. Using bolts, we fasten the engine to the body. To exit the silo, we make a hole in the side of the body itself. We weld a protective cover around the slot so that the exit product does not scatter.

We weld the platform under the structure. The platform should be in the form of a truncated pyramid with a wide base at the bottom and a narrower one at the top. This form ensures the stability of the unit during operation. Having made holes for the bolts, we attach the bottom of the engine to the platform. As you can see, all the details are easily found on the farm. The problem can only arise with the sleeve, which can be made on the machine.

• washing machine

Such a device operates on the same principle, but allows you to grind not only grass, but also branches.

DIY chopper

Handy materials:

• engine and cylindrical body from an old washing machine;
• knives or an outdated hacksaw blade;
• fasteners, nuts and bolts;
• bushings;
• grinder, screwdrivers;
• waste material container;
• furniture legs.

In the container from the washing machine - you can replace it with a pan, bucket or barrels - make a hole and cover it with a sheet of thin metal. It is better to make such a passage at the bottom of the container, but if it does not work out, then it should be on the side and always below the blades. Following the example of the previous option, you need to make a sleeve to which the knives are attached, and fix the knives at the bottom of the container.

Based on the dimensions of the motor shaft, make holes for the bushing and motor mount. Attach the machine engine to the container using the installed clamps. As a container for collecting chopped grass, you can use both a bucket, a barrel, and a homemade container made of metal and attached with bolts.

After reviewing the above options, you can easily make a garden shredder at home. At the same time, the videos and drawings provided on the network will help you in the precise assembly of specific units. Depending on what improvised means you have, the amount of work, you can choose a manufacturing method that is more suitable for you. The main tools that are needed to assemble a garden shredder are a grinder, a screwdriver and a welding machine.

Do not forget to follow the safety precautions when working with electrical types of units. Sharp knives and discs pose a serious danger to your life and health, as well as to people in the environment. Be especially careful with the tool if there are children in the house. From the foregoing, we can conclude that the grass chopper can be made by hand or purchased ready-made.

After pruning shrubs and trees, every season there are many branches that have to be burned or stored in a compost heap and wait a long time for them to rot. A wood chipper will allow you to get rid of unaesthetic piles of branches of various sizes and speed up the process of forming compost suitable for feeding cultivated plants. A homemade garden shredder is also suitable for grinding large weeds, sunflower stalks and other plant waste.

The wood chipper will be useful for those who heat their house, cottage or garage with solid fuel. Such an installation makes it possible to prepare raw materials from woodworking waste for further transformation into pellets for heating.

DIY garden shredder: design choice

A homemade branch shredder consists of the following main elements:

• motor (electric, gasoline);
• working shaft with a cutting element;
• support frame;
• protective cover;
• receiving box;
• hopper for crushed vegetable waste.

Note! For ease of movement, the wood chipper can be mounted on a wheel frame.

The wood shredder works according to the following principle: plant waste in the form of grass and branches is fed into the receiving shaft, they are ground by knives mounted on the working shaft. The engine can be located directly on the shaft or connected to it by a belt drive.

When planning to make a windmill, it is important to choose the right motor. Homemade crusher equipped with a 5-6 hp gasoline engine. with., will cope with branches of any thickness.

The electric motor is selected in terms of power depending on the tasks:

• with a motor up to 1.5 kW, you can equip a chopper for grass and thin branches;
• a 3-4 kW engine is suitable for equipping a wood chipper, a wood chipper equipped with such a motor can grind branches up to 4 cm in diameter;
• an electric motor with a power of over 6 kW will make it possible to make a productive wood chipper with your own hands, use a wood chipper to process branches with a diameter of up to 15 cm.

The purpose of the installation also affects the choice of the cutting part of the structure.:

• The shredder of thin branches and grass is equipped with knives put on the shaft crosswise, made of sharpened carbide plates;
• A milling type wood chipper is equipped with a cutter with large teeth, it will cope with branches up to 3 cm thick, but the wood must be dry. Such a windmill requires a small motor power and high torque, therefore, a reduction gear must be provided in the design.
• A vetkorub for branches of various thicknesses and thin trunks is equipped with a circular knife - cuts are made in a steel disc with a thickness of 6 mm or more, and a strong sharpened blade is attached to one edge of each cut.
• The wood chipper, which allows crushing branches and woodworking waste into fine dust, is made on the basis of a package of saw blades for wood with large teeth made of carbide material.

Important! A chipper for crushing any wood, made on the basis of a package of circular saws, can be used as part of a homemade pellet production line.

How to make a crusher yourself? First of all, you should decide which crusher you need: for branches or for wood chips. Based on this, the design and power of the motor is selected.

Detailed drawings can be found on specialized Internet resources - a garden shredder is made by many who want to save money on buying useful, but expensive equipment. Below we offer one of the most popular options for drawings.

Circular saw chipper: manufacturing principle

This machine has a simple design, such a do-it-yourself crusher is mounted quickly and does not require large financial investments. Assembly work is carried out using a grinder, wrenches, a welding machine.

materials:

• electric (from 4 kW) or gasoline (5-6 hp) engine;
• at least 15 circular saws with a diameter of 18 cm or more (the width of the working part depends on the number of saws);
• hairpin M20 or similar;
• bearings (2 pcs) and fastenings to them;
• pulleys (2 pcs);
• washers (2 more than the number of saws) made of metal 5 mm thick;
• metal profile for mounting the support frame;
• sheet metal (2 mm thick) to make a protective cover and a receiving hopper.

The branch crusher is mounted as follows:

• A frame is welded from rectangular profile pipes;
• Saws are put on the threaded stud alternately with washers so that the teeth do not interlock with each other during operation.

Note! The discs are set with a slight shift in the movement of rotation so that the teeth do not line up. In this case, the device works more efficiently and is less clogged with chips.

• On both sides of the saw package, close to the outer washers, it is screwed on the nut;
• To the inner crossbars of the frame, it is required to weld fasteners for installing bearings;
• The bearings are fixed on a stud on opposite sides of the saw package, then the entire structure is mounted on the frame;
• A gear or pulley is installed on the long end of the shaft; a retaining ring is used for fixation;
• The engine is attached to the frame, connected to the pulley on the stud with a belt or drive chain:
• A protective cover is mounted, a receiving hopper in the form of a bell is attached. The length of the bunker should provide protection against accidental contact of hands with the working part of the installation.

A garden wood shredder made on your own will allow you to quickly get rid of wood debris, turning it into raw materials for compost or fuel. Such a device for crushing wood with your own hands must be cleaned after use, removing chips stuck between the saws.

Homemade shredders are a cost-effective solution to the problem of recycling plant debris in the garden.

The video instruction will help you learn in detail how to make a branch chopper.