Ok google how to make a garden shredder. Do-it-yourself garden shredder: getting rid of branches in a suburban area

For what purpose is a garbage shredder needed? summer cottage? What are these devices? What is better - buy a ready-made unit or make a homemade one? Finally, how to make a garden shredder with your own hands? Let's look for answers together.

What it is

Under the names “garden shredder”, “chipper” or “garden shredder” the same device is hidden - a mechanical device for recycling waste of plant origin.

Why is it needed?

• For processing tops and weeds into compost. Chopped greens rot faster; in addition, it occupies a much smaller volume in .
• For mulching the soil. In this way, we prevent the development of weeds, prevent the soil from drying out due to evaporation, and at the same time we apply fertilizers that will gradually be processed and enrich the soil with useful additives.

Reference: mulching is filling the soil with mulch (crushed biological waste).
The method became widespread in Eastern European countries in the 17th century.

• To automate the operation of solid fuel heating equipment.

Main problem solid fuel stoves and boilers - the need for frequent manual loading of the firebox - is partially solved in pellet units, where fuel dosage is carried out by loading it into a bunker and gradually feeding it into the combustion zone.

Pellets (compressed sawdust pellets) can be successfully replaced with crushed trimmed branches, shrub trunks and other wood waste.

Classification

Stationary chippers can be classified as follows:

By energy source

Electrical devices require a power supply of 2 - 6 kilowatts. A moderate price is combined with low weight and relative compactness: say, the typical weight of a chipper with a plastic 40-liter container and a 2.5 kW motor is 10-12 kg at a cost of 6-8 thousand rubles.

For reference: a typical electric unit is designed to chop branches with a diameter of up to 40 - 45 millimeters.

Shredders equipped with gasoline engines have more power, which makes it possible to grind large branches and twigs. In addition, they are more autonomous: the user is no longer tied hand and foot by the length of the power cord.

Of course, the presence of a powerful engine and gas tank inevitably affects the retail price, dimensions, and weight.

Here are the characteristics of a fairly typical Craftsman 77605 unit:

By grinding method

Garbage shredding can be performed:

• Trimmer line. The absence of steel knives means low weight and increased safety of the device; however, for obvious reasons, it cannot chop branches and bushes.

Useful: English instructions for such a device usually use the definition “Flex-a-Line” (from flex - flexible and line - line).

• Turbina. The blades are located at an oblique angle to the axis of rotation and are capable of chopping branches up to 45 mm thick. Due to the relatively small diameter of the turbine blade, the force on it can be significant with moderate engine power.
• Rolls. With low motor power, they are able to chop fairly large branches; however, the device's performance will be low.
• A knife rotating in one plane. This scheme is one of the simplest and most popular. In most cases, making a garden shredder with your own hands is practiced using it.
• Cutting cutter. It is ideal for processing large wood waste; in this case, the diameter of the chopped branches and twigs is limited only by the size of the cutter.
• Gears with sharp teeth. The circuit guarantees minimal noise levels; however, it does not handle soft waste well.

Self-production

We must immediately admit that detailed drawings of a do-it-yourself garden shredder are not included in our article. The reason is simple and obvious: no one has yet put production of handicraft units of this type into production in our country; a single chipper, as a rule, is made according to the principle “I made you out of what was.”

Circular saw cutter

The role of the cutter is performed by a package of 20 - 25 circular saws with a diameter of 165 - 180 mm with carbide tips. Since a gap is required between the saws, the package is assembled with alternating saws with fluoroplastic washers 4 millimeters thick.

The package is assembled on a stud with an M20 thread (the size is dictated by the diameter of the mounting hole of the saws) and is compressed with a pair of nuts and wide washers.

A couple of other parts that are easy to find at a disassembly shop fit this size perfectly:

• A pulley from a VAZ generator, mercilessly devoid of fan blades.
• Intermediate shaft bearings from a VAZ gearbox.

The frame can be either welded from a channel or corrugated pipe, or assembled with bolts.

What is used as a source of mechanical energy?

• Electric motor with a power of 1.5 - 3 kW. It is fixed movably, with bolts through grooves in the frame; This will help tighten a loose belt or replace it.

• Motor plow with power take-off shaft.
• Any gasoline engine (for example, removed from an old moped).

Bulgarian woman with lawn mower knife

Another simple and elegant solution is a DIY garden shredder made from a grinder.

1. Instead of a cutting wheel, a lawn mower blade is installed. If the diameter of the mounting hole does not match, it is simply bored out with a round file (of course, evenly in all directions, so as not to cause imbalance and associated vibration during operation). (See also article.)

1. The grinder is attached to the frame. This can be done with a pair of metal clamps directly behind its body; the attachment to the protective cover.

Problem of choice

So what should you choose - a purchased or homemade design?

Pros of purchasing

• You receive at your disposal a completely finished device that does not require any additions or modifications and is equipped with a factory warranty. If you use or modify the same grinder for other purposes, on the contrary, you automatically lose the warranty on it.
• Manufacturers are concerned about user safety. Safety guards will prevent you from getting seriously injured when shredding debris; but being injured when using a homemade unit is easy.
• However, the difference in costs between both scenarios is quite insignificant. An electric chipper with a power of 2.5 kW costs about the same as an angle grinder of the same power from a decent manufacturer (Makita, Metabo, Bosh) will cost.

Pros of DIY

They come down to more mechanical strength and device fault tolerance. In addition, the notorious safety casings often make using the chipper a real chore: large branches, for example, have to be manually chopped first.

Conclusion

We hope that the material presented to the reader will be useful. The video in this article will allow you to more clearly see how to make a garden shredder with your own hands from an angle grinder. Success in creative work!

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Ecology of consumption. Estate: After pruning trees in the spring, most gardeners are faced with the problem of disposing of old branches. This is where a garden shredder can come to your aid - a device that turns the raw material into chips or flour.

After pruning trees in the spring, most gardeners are faced with the problem of disposing of old branches. If you are an economical owner, accustomed to putting all waste into use, then most likely you send all the branches to the compost heap. All this stuff rots there and in 3-4 years you are guaranteed to get something beautiful. organic fertilizer- compost. All this, of course, is wonderful, but it takes too long. If you first chop up the branches and leaves on them, your compost will mature within a season, or even in a couple of months. And here a garden shredder can come to your aid - a device that turns the source material into chips or flour. The devices available for sale are not cheap, so we suggest you read the instructions on how to make a garden shredder with your own hands.

Materials we will need

We will not convince you that a homemade shredder will be completely free. Naturally, some parts will go into its production, which will cost money. However, on average, homemade unit will cost you 2 times less than a ready-made shredder from a well-known brand. Judge for yourself, for the shredder you will need:

• Circular saws – 15-25 pieces
• Motor – petrol or electric
• Stud (rod) M20, washers and nuts for it
• Pulley (for example, from a VAZ generator) and a tight belt
• Bearings
• Metal pipes for frame
• Sheet metal for bunker
• Plastic washers 14-24 pieces

The design of a garden shredder - we will determine the most important parts of the unit

Crushing of material in a garden shredder is carried out using knives. In finished models, the knife is most often a metal disk with 2-3 cutting surfaces. A large amount of work quickly renders the teeth unusable and they have to be sharpened periodically - you must admit, this is not very convenient, and it also takes up your time. If you decide to make a garden shredder with your own hands, then you can avoid repeating these design flaws, but assemble a reliable, high-performance and, most importantly, durable knife.

We suggest using circular saws with carbide tips for this. You will need not one disk, but several, to assemble a system from them - a package. In ready-made garden shredders, the knife, as a rule, has a thickness of 3 cm, but we can make a package of any thickness - everything will depend on the number of saws purchased. On average, for quality knife 6-10cm thick you will need 15-25 pieces. Each blade has many teeth, originally designed for sawing hard wood. Therefore, grass stems, leaves and branches will be the same to them as seeds. In extreme cases, if the teeth on your saw become dull, nothing will stop you from going to the nearest tool store and purchasing a replacement.

Circular saws can be successfully used as shredder knives

However, the knife is not everything. In order to set it in motion we need an engine. To quickly chop branches in small volumes, it is easier to use an electric motor. Its use may seem somewhat inconvenient due to the cable and the need to connect to an outlet, but it operates almost silently and does not emit exhaust gases. The walk-behind tractor has more power, so it is ideal for those cases where you need to crush coarse material often and for a long time.

Step-by-step instructions and nuances of work

1. The saws are mounted on an axis, the diameter of which is determined by the mounting diameter of the disks (20mm). A stud with an M20 thread is suitable for this. Accordingly, washers and nuts of the same diameter will be needed.

Saws mounted on the axis of the future chopper

If we install the discs on the pin close to each other, the knife will not work. And here's why: the width of the saw teeth is greater than the width of the blade itself, so when rotating, the teeth will cling to each other. To prevent this from happening, it is necessary to separate the disks a short distance. This can be made as easy as shelling pears using homemade washers that you can cut from thin plastic. Their number should be 1 piece less than the number of circular saws.

2. A pulley is put on the stud axle (from a VAZ generator or from a pump). To rotate the axis, two bearings of the VAZ intermediate shaft with internal diameter 20mm.

3. From profiled metal pipes a frame is welded onto which the walk-behind tractor rod is attached. The engine is mounted on the frame so that it can be moved relative to the circular saws. This is necessary to change the tension of the drive belt if necessary.

An axle with circular saws is attached to the frame

4. For ease of use, a thrust block made of metal profile is attached to the frame, against which branches and stems will rest when crushing.

5. On cutting unit it is necessary to put on a metal casing, which is welded from sheet metal or cut from galvanized steel. To be safe, it is better to use the first option.

It is better to make the casing from sheet iron - it is more reliable!

6. Another hopper with a socket is attached to the top for loading the material to be crushed. There are no special requirements for this part, so most often it is made of flexible galvanized steel.

The receiving hopper is easy to make from galvanized steel

Advantages of a homemade option

Unlike factory models, a homemade shredder does not require excessive care. It will become a universal assistant in the household and will help not only to chop branches and other household waste, but also to crush fruits (apples, pears, plums), along with the seeds. This is very convenient when you need to make jam, puree or homemade wine when the fruits are crushed to a paste.

Garden shredder in action

The circular saws that form the blade of the unit are capable of processing fairly large pieces of wood. Of course, we are not talking about logs, but branches with a diameter of 10 cm will be quite tough for him. This is how a homemade shredder compares favorably with a factory-made product, the body of which simply will not allow large pieces of material to pass through. Accordingly, you will significantly save your time, because you will not have to sort branches by size and think about where to put too large fragments. Also, you will not need to monitor the moisture content of the material, while a purchased shredder requires adjustment of the degree of dampness of the feedstock. The fact is that in most modern ready-made shredders, the electric motor is located at the bottom of the structure, so when processing wet stems, moisture will inevitably get into the motor, and this will lead to breakdown. IN homemade product you are free to decide for yourself where to install the engine; in the version described above, it is located horizontally, at the same level with the knives.

It is also worth paying attention to the cost savings when using a homemade shredder. Firstly, manufacturing will initially be cheaper than buying a factory device, and secondly, a “homemade” device will not need to purchase expensive parts if it breaks down - all its elements are not expensive.

A homemade garden shredder can crush even large branches, turning them into chips

In addition, a homemade garden shredder is highly productive. All waste loaded into the hopper will be pulled into the saw blades and disappear at incredible speed. Thus, homemade apparatus can be no worse than expensive and modern garden tools. In a word, if you really need a chopper, but there is no money to buy it, there is only one way out - to make it yourself!

Video example of using this unit

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

There is always a lot of trimmed 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 quickly obtaining organic fertilizer, for adding wood chips to the soil in order to improve its structure, you can get excellent mulch or fuel for a boiler . To do this, you need a garden shredder, which you can buy or you can make yourself.

Advice! Protect your hands and eyes when operating the shredder, especially when shredding solid waste. Goggles 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 casing. In addition, they can be equipped with a hopper for crushed organic matter. Among 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 blades are used and how they are positioned, the fraction of the resulting mulch may vary. The drawing below shows the basic design of such a chopper: a disk with four knives is installed vertically. The design also 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:

1. Buy, order or grind a disc with knives yourself. The sharpening angle of the knives is 35–45 degrees. The blade of the knives must have holes for bolts for fastening to the disk. It is important to position the knives correctly and secure them with bolts and stops.
2. Weld the frame taking into account the fastenings for the drive and other elements.
3. Place the disk on the drive shaft and secure it.
4. Weld the supply hopper and, if necessary, the receiving hopper for the crushed mass.
5. Assemble all elements on the frame.

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

Turning the disc

Set of knives with fasteners

In the video, the master gives advice on the construction of a homemade disk shredder.

The garden plot is a place where you can enjoy lush greenery for breakfast and bird trills in the morning, as well as spend a pleasant time immersed in the fresh colors of nature. If we look at the garden from a more prosaic point of view, then creating a neat garden is impossible without eliminating plant waste. Spring pruning fruit trees, cutting out old strawberries and raspberries, a sea of ​​weeds after weeding the beds - all this is piled up in order to be burned at the end of the season. Thrifty owners, who know how to use this waste for good, create compost heaps on the plots, which in 3-4 seasons convert all this stuff into excellent organic fertilizer. When you decide to create your own garden shredder, you can get excellent material in the form of wood chips or flour, which is convenient to use to speed up the fermentation of compost.

Operating principle of the grinding device

A homemade garden shredder will not only help you get practical benefits from waste, but also make it easier to bring beauty to your yard. With the help of such a chopper you can crush any plant residues into small chips.

Such chips look interesting as decorative mulch for paths and flower beds

The chopper works on the principle of a meat grinder, in which a 1.5-7 cm branch, falling into the receiving hopper and moving to the grinding system, is easily ground into small chips. The hopper is a structure that prevents clothing and hands from getting into the area of ​​the rotating knives. The grinding system consists of a cutter and several knives. The thickness of the shaft depends on the purpose of the device, so to chop thin 3 cm branches, an 8 cm shaft is installed.

Wear protective glasses and gloves when working with the shredder.

The performance of the equipment directly depends on the engine power. Thus, a chopper, the engine power of which is in the range of up to 2.6 kW, is capable of grinding branches d = 5 cm.

Construction assembly stages

A homemade garden waste shredder is not much different from the industrial analogues of these devices. A stationary chopper can be made on the basis of a circular saw. To do this, it is enough to replace the discs in the unit with a cutting shaft or cutter, and also attach a receiving hopper box. Or use these saws as a chopping device, placing several pieces on the shaft at the same time.

When creating a garden shredder with your own hands “from scratch,” you must first of all purchase a motor. An electric motor is the best option for quickly grinding raw materials in relatively small volumes. The electric motor is silent in operation and does not emit exhaust gases. Such characteristics of the electric motor allow it to be used not only for local area, but also in enclosed spaces. The only drawback of the device is the need to connect to the power supply system.

To work with coarse material in sufficiently large volumes, it is most preferable to use a walk-behind tractor, the power of which is significantly higher than the power of a traditional electric motor.

Advice. The use of circular saws with carbide tips will allow you to create a reliable and durable knife that does not require periodic sharpening.

To assemble a high-quality knife, an average of 10 to 20 saws with a thickness of 6-10 cm are required.

Installation of cutting saws

Cutting saws are mounted on a pin - an axis whose diameter equal to diameter landing disks. To assemble the cutting device, you will also need nuts and washers of the same size. You need to prepare in advance thin washers that can be cut out of plastic. These washers will be required to space the discs at an equidistant distance from each other so that their slightly protruding teeth do not cling to each other when rotating. The number of washers should be 1 element less than the number of disks.

A pulley is installed on a pin strung with disks, which can be taken from a pump or from a VAZ generator. To rotate the axis you will need two bearings with internal d=20mm

Manufacturing and arrangement of the frame

You can come up with a lot of design options, it all depends only on the imagination, ingenuity and desire of the craftsman.

A garden shredder (shredder or chipper) is a mounted or trailed device that is used to clean park farms and garden plots from various types plant debris.

This device helps to dispose of branches, leaves, and small tree trunks. Disposal occurs by crushing the source material and further using the resulting mixture as fertilizer to cover garden paths.

Both industrial shredders and small-sized devices are produced that can be used to work on suburban area.

Types of Garden Shredders

The types of shredders are distinguished by the cutting system they use. In turn, the cutting system may differ in its elements, with the help of which the process of processing leaves, grass, and branches is carried out.

The most popular cutting systems (RS), tested in practice and proven to work well, are:

• Hammer RS - installed on low-power units, which are designed for processing small-caliber branches. The advantage of such shredders is their low price;
• RS based on cutting mills– used in powerful units for grinding solid waste, as well as large wood waste;
• Knife PC – used in most popular models of garden shredders. Devices with such a system easily process both grass and leaves, as well as branches of various thicknesses.

Note! The blade cutting system of a garden shredder is the most versatile and is well suited specifically for those jobs that are performed in the garden.

Find out how to make a router from a drill with your own hands:

Design and principle of operation of a shredder with a knife RS

Despite the rather complex drawings that can be viewed on the Internet, the design and operating principle of such a chopper are quite simple.

The body of the garden shredder is usually mounted on a special support in the form of wheels or legs for convenient transportation of the device. Externally, this whole structure looks like a cart with a handle. Inside the housing there is a mechanism (gasoline or electric), as well as a grinding system.

The whole principle of operation of the chopper is very similar to the principle of operation of a conventional meat grinder:

• A cutter with knives is attached to the electric motor shaft, with the help of which garden waste is shredded;
• The drive is carried out using a belt and a transmission mechanism;
• The hopper (a special bag for collecting garbage) receives waste, which is ground by the cutting system described above;
• The shredded wood obtained from the bunker can be used by the gardener as compost.

Types of Garden Shredders

Types of shredders differ according to the type of engines used in them:

• An electric shredder is a low-power shredder (up to 3000 W), designed for processing small vegetable waste (any herbaceous plants, leaves and branches up to 35-40 mm thick). Typically used on garden plots small area;
• with a gasoline engine, it comes in different capacities, stationary or mobile;
• Mobile shredders can be divided into self-propelled (wheeled tractors) and trailed.

It should be noted that wheeled shredders can also be used to remove waste from park alleys. This installation additionally has a unit that operates on the principle of a vacuum cleaner. It is designed for cleaning small debris - tin cans, traffic jams, etc.

DIY garden shredder

Necessary materials and constituent elements:

• Iron sheet for making a hopper into which the starting material (branches, leaves) is supplied. Sheet thickness - 10 mm And 2 mm;
• Iron corners for the manufacture of beds(the base on which the hopper and engine are installed);
• Disk for fastening knives;
• Pulley - 2 pcs;
• Knives - 3 or 4 things; You can use a car spring - this best option for making knives at home;
• Knife shaft - 2 pcs;
• Rivets, bolts, nuts– fasten and screw structural elements;
• Profile pipe;
• Electric motor;
• Wheels– you can use wheels from wheelbarrows, like those used in supermarkets and markets;
• Brush And dye to bring the structure to its proper form.

1. 1. Preparatory work. Creation of a competent drawing of the future structure. Particular attention is paid to determining the location of the electric motor shaft. According to the diagram presented in the figure below, the drawing of a garden chipper consists of several shafts, with knives attached to each of them ( 2-3 pieces). The shafts themselves are located between two metal disks. Smooth rotation of the shafts is ensured by bearings;

1. Assembly of the structure. Based on the drawing, we proceed to assembling a homemade chipper.

Assembling a garden shredder

• • Creating a frame. For this: profile pipe cut into pieces. There should be 4 parts in total. Two of them are long 40 cm, and the other two - 80 cm. Next, we attach the short blanks to the long ones. Fastening is best done welding machine. The result is a frame;

• • Attach to the finished frame 2 racks;
  • We make a shaft. For this you will need metal blanks (round and square shape). Round blank ideal for attaching knives in quantity 3 pieces, square - for 4. Both blanks are sharpened for cuts for knives;

• • Work on the creation of a grinding (crushing) drum. We make the drum walls from a metal sheet of thickness 10 mm. We make holes in the walls, where we then insert bearings;

• • Install inside the bearings shafts and secure them well. On the shafts, in turn, we put gears;
  • Working on creating a bunker receiving box. We cut out blanks from the prepared metal sheet in the amount 4 pieces. The shape of the blanks is a parallelepiped. The narrow edges of the workpieces need to be folded (approximately 3-4 cm). We bend the long side of the blanks in the opposite direction, also 3-4 cm. We connect all the workpieces to each other, and weld the edges with a welding machine for greater reliability;

• • We install the resulting structure on the base(frame) of the chopper and fasten it with bolts;
  • Installing the engine And tension the drive belt. If it is necessary to dispose of large branches, you can use a higher power engine, enlarge the hopper and install the entire structure on a stationary base - a table;

• For all “working” elements of the chipper install the protective casing and a receiving container for raw materials. To create them, thin sheet iron is suitable ( 2 mm).

Where to buy a garden shredder

Comfortable garden shredder can be purchased at affordable price in specialized stores. Prices vary from 100 dollars before 4000 (Bosch AXT chopper).

However, before purchasing the best thing acquainted with reviews buyers on the Internet, and also inquire from familiar summer residents who already use a shredder in their gardening.

And most importantly, think carefully, evaluate all the pros and cons, consider what volume of work is planned on your site, what kind of plant debris predominates there, how often you plan to use the shredder. Then it will become clear what type of garden shredder is needed. Or maybe you can still make a garden shredder yourself?

A good example of making a garden grass and branches shredder with your own hands is presented in this video.