Wood chopper with their own hands. Production of wood chopper: step-by-step instruction. Why do you need wood chopper. How to make wood chopper from girlfriend?

Each owner of his own site, be it a country house or a small cottage with a garden, it is known that it is sometimes very difficult to maintain order on it. The problem of utilization of garbage on the private sector is especially acute, and if the organic can be stored in a compost pit, and plastic and bottles to export in the landfill, how to be with an abundance of woody sera? After cutting fruit trees or construction, there are a lot of unnecessary branches, boards and lumber. There is no meaning to leave them on firewood, but burn very long and troublesome. Especially for such cases was invented wood chopper. The new device is quite expensive, but fortunately, it is not difficult to make wood chopper with your own hands as difficult as it may seem at first glance.

Content

Appointment and principle of work

Wood chopper will become an indispensable assistant for any dacket. With it no longer need to breed fires to burn outpit branches of trees or think where the waste after assembling the crop - stalks, tops, roots, etc. Any organic solid garbage machine recycle in sinters and chips, which will subsequently serve as excellent material for high-quality compost or fuel for solid fuel boilers. So, in one fell, you decide somewhat problems: utilization of garbage, saving and time, get an endless source of material for fertilizers and fuel reserve for the winter.

Oh neither twist, the wood chopper is very useful in the farm, but the factory mechanisms are exorbitantly expensive, so we suggest to save and make it yourself. The most encouraging thing is that there is no need to "reinvent the bike" - it is only necessary to repeat the design of the factory device correctly using the available items.

But before starting work, it is necessary to thoroughly study and understand the principle of operation of the machine. Otherwise, you will not have to make the right drawing and embody it into reality. The device of the grinder to disgrace is simply an engine, a shaft with cutting elements, frame, a protective shell and a receiving compartment, through which the material gets inside. Since such an aggregate is pretty heavy, it is better to install it on a two-wheeled database to easily move on the site.

The principle of operation of the apparatus is as follows: the motor rotates and moves the shaft by means of a chain or belt. When you encourage branches or plants stems into the receiving box, the cutting elements refresh them into small pieces that come out on the other side of the device. Very similar to the usual kitchen meat grinder.

Device shredder

Before choosing a diagram and purchase the components of the future shredder, it is necessary to determine its purpose, that is, that specifically (or most often) it will grind - thick branches of fruit trees, small boards or remains of plants after harvesting. From this depends the power of the device, the type of its work and, accordingly, the cost of the necessary parts.

Engine shredder

For garden choppers, gasoline or electric motors can be used. Each of them has its own features of use. For example, with a gasoline engine you can process large thick branches, it is also valued for its mobility. The device with an electric motor, on the contrary, should be constantly located near the power source, but it takes much less space than gasoline. It is lightweight and easy to use, but will not cope with too large objects due to low power.

What to pay attention to when choosing an engine for a garden chopper:

power up to 1.5 kW is enough to grind the branches with a thickness of up to 2 cm;
more powerful engines in 3-4 kW are able to recycle branches with a diameter of about 4 cm and suitable for gardeners;
the engine from 6 kW and more cope with thick branches of 10-15 cm, and they are recommended to choose to the owners of large farms and farms.

Since the homemade shredder in most cases is designed for various work, it is better to choose the "golden middle" - an electric motor in 4 kW or a gasoline analogue with a capacity of 5-6 horsepower.

Knives for chopper

The second important detail of the chopper is cutting elements or knives. The type and principle of operation of the mechanism, as well as the size of the recycled material depends on their design. So, a simple disk with knives will be chopped into the pipe only fragile branches, combined structures can recycle thick branches and give out the same small chips, there are such that the wood is crushed into a chip of 2-10 cm long. If you plan to use recycled material for solid fuel Boilers, it is better to choose the last option.

Since our goal is to copy one of the factory models of the shredder, consider knives used for their production:

The disk knife is designed to process small branches with a thickness of up to 2 cm, plants and grass stalks.
The milling system - knives, arranged in a similar way, will be able to grind a branch with a thickness of about 8 cm. The only mandatory condition - the sawn timber should be dry. Otherwise, the bark and wet chips will score mills, and the mechanism will stop working.
Milling and turbine knife is one of the most common and convenient options. Such a design can grind any branches regardless of the thickness and degree of humidity.

Unfortunately, the described models of the knives are almost impossible to make models, so for homemade devices their cutting elements were invented: a knife-disk design, a set of disk saws and a two-wheel system with 8 knives.

Drawing of the shredder

To make a shredder for wood, little only to buy the necessary spare parts, you need to have professional locksmith skills. The whole process takes place in three stages - creating drawing, preparation of materials and assembly of the device.

Since we are not going to invent anything new, you can take any suitable model of the shredder as the basis of the drawing, and the rest adds at its discretion. You can use the Special Computer Program AutoCAD to create a drawing.

The main components of the mechanism we described above, but this is only a general view. The most important thing is to pay attention to when creating the drawing - the arrangement of the knives and the angle of their cut. Consider the development of the design of the chopper with a two-walled cutting element.

So, the shafts will be between the plates, and each shaft will contain 3-4 knives. To fasten the cutting elements, it is better to use bolts, shifting them relative to the central part of the shaft. The shaft rotates freely thanks to 4 bearings that are fixed on the plates. The synchronicity of the motion of the shafts provide 2 gears that drive the motor. To pass a torque, use a belt or chain to choose from. Depending on the size of the knives and the diameter of the raw material, which you are going to grind, vary the gap between the shafts.

If you use an electric motor for 4 kW, its number of revolutions is 2500-2800 rpm. This indicator is good for a disk mechanism intended for thin branches and plants stems. The two-walled mechanism must be powerful, so the number of revolutions must be reduced.

The images below present drawings of wood chopper with 2 shafts, each of which is 3 knives:

The disk model looks much easier mainly due to the simple design of the knives.

The drawing can display the diameter of the disk, the number of knives and their location. The more knives, the sooner there will be raw materials at the exit. The disc can be located vertically or at an angle.

On the frame is attached stud with disk saws. Often in such devices use a drive belt, so two pulleys should be made on the shaft and stud.

Most of the materials needed to build the chopper can be purchased at the car market, the shop of agricultural machinery or in a construction store, but some details will have to be ordered or done on their own. To do this, you need to be able to work with a grinder and a welding machine.

Two-walled chopper

The work on the creation of a two-walled chopper consists of the following phases - assembly of the frame and the receiving compartment, creating a grinding drum with knives, installation of a drum and a motor.

Necessary materials:

engine;
plate 10 mm - 2 pcs;
gear - 2 pcs;
pulley - 1 pc;
shaft for knives - 2 pcs;
bearings with fasteners - 5 pcs;
knives;
profile pipe;
sheet metal (thickness 2 mm).

First of all, you should make a frame. To do this, cut from the profile pipe 4 parts: 2 - 40 cm, 2 - 80 cm. Welding machine Fix short parts between long at right angles so that the frame turns out. The distance between the two internal crossings should be such that the chopping drum can be in between them.

To subsequently, the shredder could be moved, the wheels should be adjusted to it. To do this, fix 2 racks on the frame, on which the axis and wheels will be kept.

Assembling the mechanism:

When the frame is ready, you can collect a chopping drum. To make the shaft, take a square blank for 4 knives or round - for 3.
At the square blank, catch the ends, making them round so that they entered the bearings. If you use a round blank, deposit its central part by making 3 flat cuts to install knives.
The knives themselves can be easily made from the Spring of KamAZ. Cut the desired springs, align it if necessary, heating in the mountain and hitting the hammer several times. Relieve the item and let cool.
In the knives, make holes under the bolts.
Sharpen the knives on the machine by choosing the cutting edge angle of 35-45 °.
Attach knives to the shaft and tick the attachment points. Wrap the holes in the outlined points and make the threads in them.
To make a chopping drum, take two plates - it will be walls. Cut the welding machine in them the holes for bearings and stare edges. If it is not possible to make this stage yourself, you can contact a plumbing workshop or an enterprise.
Install the bearings inside.
Bolts attach overlays on metal walls.
Insert the shafts into the bearings and secure them.
Connect the walls with rugged metal studs and secure them with nuts.
It remains only to make the receiving chamber, through which the timber will get inside. To do this, take a sheet metal and 4 do the same workpiece in the form of a parallelepiped.
Find the narrow side of each workpiece, departing from it by 5 cm and bend the edge.
Bend the remaining three blanks to do in the opposite direction.
Assemble the box and make sure the workpiece in close contact with each other.
Connect self locking edge welding or rivets.
At the bottom on the folded sides of the drill locations for the fasteners.
Install all the assembled structure of the frame and secure it with screws.
Put a motor and pull actuation member (belt or chain).
In the last set and lock the receiver volume.
Close all the internal parts of a protective casing to the rotating mechanisms have not got chips and dirty.

Assembling the wood chippers in the video below will help you more fully to imagine how the whole process:

disk grinder

In contrast to the two-shaft, disk shredder requires much less detail, time and effort during assembly.

Necessary materials:

motor;
knives;
profile pipe;
a metal sheet for disk;
sheet metal 2 mm in thickness for the protective shell and the receiver compartment.

Such a small number of parts due to the low capacity of the device. If the two-shaft mechanism can grind thick branches with a diameter of 10 cm to pieces, this will cope with up to 2 centimeter. Knives can be made as described in the instructions above.

Progress:

Shaped tube of the frame do.
Put the engine into the frame.
Above the engine set reflecting shield of sheet metal.
The reflective shield cut a hole for the shaft.
The disc drill a hole for mounting on a shaft and a small slit for fixing the blades.
Assemble the blade disc and install it inside.
Make the receiving chamber of the sheet metal of the above instructions and attach it to the chopper.

As you can see, nothing complicated, the main thing - to get all the necessary details. Homemade wood chipper with two shafts has a large capacity and is designed for the processing of large branches. Dimensions of chips can be controlled from 2 cm to 8 cm depending on the number of knives per shaft.