SU1253799A1 - Apparatus for disintegrating wood material - Google Patents

Description

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The invention relates to the forest industry, in particular to equipment for chopping wood,

The purpose of the invention is to increase productivity, ensure uniform clamping and simplify the design.

The drawing shows a grinding device, a general view.

The device includes a receiving hopper 1, a cutting body 2, clamping swivels ry symmetrically located relative to the latter; chagi 3, which are placed on the swivel arms 4, the latter being on the same level with the axis of the cutting body 2. Limit switches 5 are fixed on the hopper 1, and stops 6 are mounted on the rotary levers 3. The rotary levers 3 are equipped with an actuator a lever 7 connected to the rod 8 of the hydraulic cylinder 9, and a pusher 10 pivotally connected to the lever 11,

The device has limit switches 12 for fixing the extreme lower position of the levers 3. The rotary levers 3 have internal and external curvilinear surfaces, and the inner surface of the lever 3 is formed by a circle concentric with the circumference of the cutting member. The radius of the inner surface R, is larger than the radius of the cutting organ 2 by the main protrusion of the cutting tool and the technological gap. Outer surface of the swivel arms

3 is formed by the radius lm m of the ratio

one,

define 2 i R S,

Where

L

R 2

Sh

15

20

cutting body radius; the distance from the axis of rotation of the lever 3 to the axis of the cutting body 2,

The material to be ground 13 is placed in a receiving bin t.

A device for grinding wood works as follows.

The clamping pivot levers 3 are installed in the upper working position. When the hopper F is fully loaded, the wood material 13 includes drives of the cutting body 2 and pivoting levers 3. Turning the levers 3 and the abutment 6 acts on the limit switch 12. The signal from the latter goes to the corresponding valve

12537992

with electromagnetic control, the rod 8 of the hydraulic cylinders 9 extend and rotate the rotary levers 3 to the lower operating position. The levers 3 capture the wood material and press it against the working member, which carries out the grinding of the material.

Since the inner surface of the lever 3 is formed by a circle concentric with the circumference of the working member, in the zone of action of each lever 3, the clamping forces are directed along the radius to the cutting member, and over all its surface these forces are evenly distributed.

A uniform distribution of the pressing force over the surface of the cutting member 2 is also achieved by the fact that the axes of the pivot levers 3 and the cutting member 2 are located at the same level. When the center of rotation is located above the specified level, the pressing forces in the inner part of the levers adjacent to the center of rotation will not move to the cutting element 2, t, e. the wood material will not press against the cutting surface,

If the center of rotation is located below the indicated level, the uniform distribution of the pressing force on the surface of the cutting member will also not be performed. This happens because at the moment, when the peripheral part of the levers will still move down, the part nearby to the center of rotation begins to move away from the cutting body

2, reducing the clamping force. Thus, to ensure uniform distribution of the clamping force on the surface of the cutting body 2 and the minimum height of the swivel arms

3, their axes are flush with the axis of the cutting body 2,

15

thirty

35

40

45

50

55

At the moment of grinding, wood is supplied to the outer surface of the pivoting levers 3, and when the levers 3 reach the lowest working position, the abutment 6 acts on the finite switch 5, the signal from which is fed to the corresponding valve, the rod 8 is moved in the hydraulic cylinder 9, and the levers 3 are retracted t to the upper working position by turning them around the axis 4. At the same time, the wood material on the arms does not move,.

At the moment of grinding, wood is supplied to the outer surface of the pivoting levers 3, and when the levers 3 reach the lowest working position, the abutment 6 acts on the finite switch 5, the signal from which is fed to the corresponding valve, the rod 8 is moved in the hydraulic cylinder 9, and the levers 3 are retracted t to the upper working position by turning them around the axis 4. At the same time, the wood material on the arms does not move,.

 12537994

as the outer surface is turned down. When hitting, the ring is called a circle drawn from the extreme 3 uppermost position of the center of rotation of the levers 3 radiate the limit switches 12 R When the rotary fish levers move, the rotary levers 3 move the chugs 3 to the upper working position 5 down, gripping the wood. In this way, the space between the arms in a mastered manner makes it possible to continuously accumulate and accumulate on their external device. The ground wood ground material is shredded and the raw material is sent for further processing under the force of gravity mixing. After which the cycle is repeated.

Claims (2)

A DEVICE for GRINDING WOOD MATERIAL, including a working body and a clamping device with drives, a receiving hopper, characterized in that, in order to increase productivity, ensure uniformity of the clamp and simplify the design, the clamping device is made in the form of symmetrically arranged relatively inner and outer surfaces with respect to the working body of the rotary levers, the axes of which are located at the same level with the axis of the working body, while the inner surface of the levers is pleased durability, concentric circumference of the working body, and the outer circle drawn from the center of rotation of the levers, a radius determined from the relation _Λ where R is the radius of the working body; 2 - the distance from the axis of rotation of the lever to the axis of the working body. *