How to make your own garden shredder. Do-it-yourself garden shredder of branches: drawings and instructions. Types of garden shredders

Let's look at the different types and designs of garden shredders for branches, wood chips, grass and grain that can handle any type of plant waste.

For you, we have collected a selection of drawings and instructions for making a do-it-yourself knife garden shredder.

There are always a lot of cut branches, grass, tops and other plant waste in the garden. You can collect them and burn them, you can put them in a huge pile in the hope that someday you will get compost, or you can prepare raw materials for a quick organic fertilizer, for adding wood chips to the soil in order to improve its structure, you can get an excellent mulch or fuel for the boiler . To do this, you need a garden shredder, which you can buy, or you can do it yourself.

Advice! Protect your hands and eyes when operating the shredder, especially if you are shredding solid waste. Glasses and leather gloves will protect you from injury.

Types of garden shredders, main components and elements

Shredders consist of a cutting mechanism, a drive, a loading hopper and a frame with a sheathing. In addition, they can be equipped with a hopper of crushed organic matter. Of the auxiliary means: a pusher and a sieve, which is used to obtain a certain fraction of wood chips. The residue on the sieve is sent for re-grinding.

Depending on how many knives are used and how they are set, the fraction of the resulting mulch may be different. The drawing below shows the basic design of such a grinder: a disk with four knives is installed vertically. Also, the design works well if the disk is fixed at an angle to the horizontal, and there are only 1 or 2 knives.

Assembly drawing: 1 - knives 4 pcs.; 2 - disk cutter; 3 - bearings No. 307

Operating procedure:

Buy, order or grind your own disk with knives. The knife sharpening angle is 35–45 degrees. The knife blade should have holes for bolts for attaching to the blade. It is important to correctly set the knives and secure them with bolts and stops.
Weld the frame, taking into account the fasteners for the drive and other elements.
Push the disc onto the drive shaft and secure.
Weld the feeding hopper and, if necessary, the receiving hopper of the chopped mass.
Collect all the elements on the frame.

If the frame is mounted on wheels, then the structure becomes mobile.

Disc turning

Knife set with fasteners

In the video, the master gives advice on the device of a homemade disc chopper.

When pruning trees in winter, every gardener is faced with the problem of storing thin branches, since they take up a lot of space. You have to chop them manually or with a special chopper. The second option is preferable, as it makes it possible to process wood into small chips very quickly. Only factory-made units are too expensive, and therefore in this article we will tell you how much cheaper it is to make a branch chopper with your own hands.

Types of wood shredders

The main element of the unit is a working mechanism, whose task is to grind small branches to a fraction of a certain size. Different factory-made shredders differ in the design of this mechanism. The drive that rotates it can be anything: gasoline, diesel or electric.

The following types of factory units are most suitable for playback at home:

disc grinder for grass and branches;
unit with a cutting mechanism of saws for wood for a circular machine.

In a disc crusher, branches are literally chopped into small chips with sharp knives mounted on a flywheel in the form of a thick metal disk. It is spun by an electric or gasoline engine by means of a belt drive. For safety reasons, the disc is covered with a metal casing, and a bunker is used to feed the branches manually. It is located at an angle to the rotating blades in such a way as to split the wood as efficiently as possible.

The advantage of a disc chipper is that it processes wood quickly enough, that is, it has a high performance. The main disadvantage is the need for periodic removal and sharpening of the cutting edges of knives. Not everyone can do such work with their own hands, they have to give the knives to the master for sharpening and pay money for it. It turns out that a homemade wood chipper will make you incur expenses during operation.

It should be noted that the materials for the manufacture of a disc grinder at home will be quite inexpensive. Especially when the metal of the required thickness can be found in the household or obtained at the nearest scrap metal collection point. But you will have to spend money on the second type of crushers - buy 2 dozen saws for wood for a circular machine.

The principle of operation is as follows: the drive rotates the shaft, on which saws with hard alloy teeth are installed one next to the other. Wood is supplied to them through the loading hopper and the mechanism literally bites into it, grinding it to the size of sawdust. The processing speed is not too high, but the sawdust is small, which is much more convenient for heating a house than wood chips. For example, you can make fuel briquettes from them yourself.

Important. In both types of shredders, it is not the speed of rotation of the shaft that is decisive, but the force developed. In the first version, it is higher due to the untwisted heavy flywheel, which allows you to cut branches faster. A sufficient number of shaft revolutions is 1500 rpm, no more is needed.

How to make a disc crusher?

If you like this type of chopper, then you need to understand that its assembly will require good welding skills. In addition, you need to prepare the following materials:

steel sheet with a thickness of 10 to 16 mm;
the same, 5 mm thick - on the casing and the loading hopper;
high carbon steel for knives, car spring is suitable;
pipes are round or shaped to weld the frame;
steel shaft with a diameter of 20 mm;
2 rolling bearings No. 307 or others;
fasteners (bolts with nuts)
pulleys, belt.

Note. You can omit the belt drive if you plan to use an electric motor with a speed of 1500 rpm for the crusher.

On various Internet resources you can find all sorts of drawings of a branch chopper, we bring to your attention one of the popular options:

A regular circle with a diameter of 400 mm is cut out of thick metal, a hole for the shaft is made in its center. The pulleys and shaft must be machined on a lathe, while at the ends of the shaft threads should be cut for fastening the flywheel and pulley. Knives can be made at home, following the drawing, in extreme cases, entrust this business to a milling cutter. Further, from a steel sheet it is necessary to weld a protective casing with a hopper, from which to make holders for bearings with holes.

In fact, a homemade branch chopper is a cutting mechanism mounted on a frame of arbitrary design. The drive motor can be placed in a convenient location depending on the length of the belt. Do not forget to make the motor mount sliding so that the belt can be tensioned. The shaft of the mechanism is also mounted on the frame, a pulley and a flywheel are attached to it. The knives should be bolted to the flywheel so that their angle of inclination is 30°. To do this, you need to prepare special steel linings.

Chopper with a working matrix of saws

The assembly of this unit is somewhat simpler than the previous one, there is less welding work. For the grinder you will need:

saws for wood with hard alloy teeth - 20 pieces;
separating washers 5 mm thick with a hole of 20 mm - 19 pcs.;
sheet steel 2 mm thick;
pipes for the manufacture of the frame;
shaft with threads at the ends with a diameter of 20 mm;
2 rolling bearings;
fasteners (bolts with nuts)
pulleys, belt.

This simple garden shredder is assembled by alternating a set of washers and saws on a common shaft, after which they are compressed from the sides with nuts. The washers are routed between the saws so that their thicker carbide cutting parts do not press against each other and are not squeezed when the nuts are tightened. Then bearings are pressed onto the shaft and installed in cages welded to the pipe frame.

The rest of the chopper assembly work is carried out as in the previous version: it is necessary to make a belt drive on pulleys with the engine fastened to the frame, make a casing with a hopper and put them in place, as shown in the photo:

Note. The resulting matrix of circular saws during operation can be clogged with a small fraction of wood, sometimes wood chips get stuck in it. But carbide teeth serve for a long time without sharpening, the main thing is not to overheat them, otherwise soldering can fly off.

Conclusion

When a lot of trees grow on a personal plot, a do-it-yourself wood chipper can be a very useful thing. At a minimum, it will save you from a bunch of pruned branches that take up a lot of space. The scope of the resulting sawdust and wood chips is extremely wide, including they can be useful for heating your home.

Being engaged in home gardening, summer residents are invariably faced with the need to dispose of various garden waste. It is possible to simplify the disposal of such waste using various specialized tools. It is not difficult to make a branch chopper with your own hands, which will save on the purchase of expensive factory equipment.

Garden shredders have a simple design; with the right choice of components used, it is not difficult to assemble the unit at home. It is only necessary to decide on the shredder execution scheme - based on an electric or gasoline engine.

The design of a homemade garden shredder will consist of the following elements:

metal frame;
engine;
knives mounted on a shaft;
protective cover;
boxes for receiving shredded waste;
starting system.

You can make garden tools in a mobile or stationary version. For the manufacture of the frame, it is permissible to use a frame from a workbench or weld the structure yourself from a metal corner. The box for receiving shredded waste is made of tin or a plastic bucket. It is necessary to take care of the high-quality protection of the cutting tool, which is responsible for grinding plant waste. A durable do-it-yourself chopper casing, the drawings of which can be found on the Internet, is made of sheet steel or trimming a pipe of a suitable size.

The principle of operation of garden waste shredders is extremely simple and remotely resembles the work of a meat grinder or coffee grinder. On the shaft, which is connected through gears to the drive, there are numerous rotating knives that quickly grind the vegetation, after which the crushed waste enters a plastic box and is disposed of by the gardener.

The basis of the shredder for branches and foliage will be an electric or gasoline engine, the power of which is 5-7 horsepower. When using an electric motor, a drive with a power of 1.5–3 kW will suffice. The easiest way is to make an electric chopper, which will be distinguished by its simplicity of design, reliability and durability. Subsequently, such equipment will not require any serious maintenance and repair.

DIY electric garden shredders use electric motors taken from old machinery. The performance of the completed shredder, as well as the ability to work with thick branches and solid waste, will directly depend on the motor power indicator.

Shredders with an engine power of 1.5 kW are characterized by low productivity and are capable of grinding branches with a diameter of no more than 20 mm. Devices with a drive power of 3-4 kW will be an excellent choice for a personal plot, easily coping with both the utilization of grass and the grinding of branches 40 mm thick.

It is not recommended to use more powerful engines for the manufacture of homemade shredders, since such a technique will have a complex design, and it is often problematic to work at a high speed of rotation of the shredding mechanism. To make a homemade shredder, you can use an electric motor from a trimmer, washing machine or grinder.

Homemade aggregates and factory-made crushers use cutting nozzles of various types. The choice of one or another type of cutting tool will depend on the drive power and the entire design of the apparatus.

The following nozzles received the greatest popularity:

disk with blades;
milling;
milling-turbine type.

The simplest knot crushers are equipped with a disc cutting tool, on which numerous flat blades are located. When rotating, they grind garden debris and do an excellent job with fallen leaves and grass.

Milling knives are made in the form of a gear, on which numerous circular saws are put on. Such nozzles easily grind grass and branches, but at the same time it is necessary to monitor the moisture content of the crushed waste. Wet grass and leaves can clog the cutter, after which it will be necessary to open the case and clean the cutting edges.

Turbine cutters are versatile in use, easily handling grass, twigs and large wood waste. Their disadvantage is the complexity of self-manufacturing: most likely, you will need to purchase ready-made nozzles from factory grinders.

The manufacture of such an apparatus in the presence of an appropriate circuit is not particularly difficult. It is only necessary to choose a working electric motor, the power of which will subsequently allow you to easily grind branches, grass and leaves.

Homemade garden shredders for leaves and wood chips, which are made from an old washing machine, are popular. You can use not only an electric motor, but also a body with a frame, which greatly simplifies the manufacture of equipment. It is possible to make a branch chopper for a walk-behind tractor with your own hands, which will be mounted on a cultivator and other mechanized equipment.

From the tool you will need:

electric drill;
pliers;
Grinder;
wrench and screwdriver.

The power of the electric motor in old Soviet washing machines usually does not exceed 1 kW, so the shredder can only be used to grind grass and fallen leaves. Cutting knives can be made from metal scraps, which are sharpened and fixed on the motor shaft. You can also use factory nozzles, which differ in workmanship and greatly simplify the manufacture of a homemade shredder.

The work algorithm will be as follows:

This is the simplest version of the chopper, for the manufacture of which any old Soviet washing machine is suitable. The summer resident will be able to do all the work on his own, having minimal experience with a grinder and a welding machine.

A self-made chopper from a grinder is another simple option that will not be difficult to implement. To work, you will need the following tools and materials:

steel corner;
metal container;
fasteners;
purchased or homemade knives;
sheet metal;
welding machine;
electric drill;
angle grinder.

The power of the power tool will be enough to grind leaves and process small branches. It is recommended to use old grinders for the manufacture of the shredder, the drive power of which is 3 kW.

Assembly is carried out in the following sequence:

The completed home-made device is simple, and thanks to the excellent power of the electric motor from the grinder, such a home-made shredder of branches and grass will cope with various garden waste. Knives can be made independently or purchased ready-made options from a lawn mower-trimmer.

Having made garden shredders of branches and grass with your own hands from a trimmer, grinder or drive from a washing machine, you can get functional and easy-to-use equipment that will allow you to easily dispose of various garden debris, including cut branches, fallen leaves, mowed grass and other biological waste.

To make such equipment will not be particularly difficult. It is only necessary to decide on the used scheme for the execution of the unit and subsequently, according to the available documentation, carefully weld and assemble a home-made chopper, which, in terms of capabilities, will not be inferior to factory equipment.

All owners of garden plots, or people living in the private sector, are faced with the problem of disposing of dry trimmings of tree branches and shrubs.

Each year, the pile of brushwood grows, spoiling the appearance of the site and creating a fire hazard. How to get rid of old dry branches?

Use the services of a waste collection and recycling company. Effective but expensive. You voluntarily give material into the wrong hands, and pay money for it;
Burn a bunch of dry scraps right on the site. Completely free, except for the possible payment of a fine. But at the same time, you inhale suffocating smoke, and create inconvenience to your neighbors. Not to mention the fire hazard of buildings on the site. The place over which the fire blazed remains barren for several years;
Recycle cuttings into compost for later fertilization of your green spaces. The method is ideal, however, whole branches rot into compost for a long time. The process will be accelerated if they are ground into chips. For this, there is a special device - a garden shredder for branches.

The principle of its operation is simple - a cutter rotates inside the mechanism, grinding the branches into a homogeneous mass.

The drive can be manual, mechanical (using an internal combustion engine), or electric. The latter option is the most popular, due to the simplicity of design.

These devices are ubiquitous on sale, but you can make a branch chopper with your own hands. Of course, the design will not be entirely free. Some components will have to be purchased.

How to make a garden electric shredder with your own hands

What is needed for manufacturing:

Electric motor with a power of about 1-2 kW;
Circular saws with a diameter of 100-200 mm in the amount of 10-15 pieces or a cutter with large teeth;
Steel circle or finished axle. The diameter must match the seat of the saw blades;
A set of washers 5-7 mm thick for separating discs. The inner diameter must match the axle thickness. Quantity according to the number of circular saws;
Belt with pulleys for transmitting torque from the engine. Suitable from the domestic auto industry;
Channel or corner for the bed;
3-5mm thick steel sheet for working hopper;
Steel sheet 2-3 mm for the guide socket;
A pair of wheels from a garden cart, if a homemade branch chopper is supposed to be moved from place to place;
Welding machine, grinder, drill, set of fasteners.

How to make a branch chopper based on circular saws?

We purchase 10-15 blades, preferably with nozzles for hard steel teeth. We select or manufacture a set of steel washers-gaskets to separate the disks on the shaft.

The distance between the saws should be about 10 mm. If you do more, small branches will get stuck; if you do less, the width of the workspace will decrease.

We put a package of disks with washers on the shaft. It can be machined on a lathe, or you can use one from an old car gearbox.

Important! The teeth of circular saws should not be in the same line. They can be arranged with an offset, or better - in a chaotic manner. In this case, the load on the shaft, and accordingly the engine will be lower, extending the life of the structure.

We weld a solid frame from a channel or a corner. From below we install the foundation for the electric motor. Be sure to provide for the possibility of moving the engine to adjust the tension of the drive belt.