SU982594A1 - Stump pulling device - Google Patents

Description

The invention relates to forestry and can be used to stump up stumps.

A device for pulling stumps is known, which includes a pushing frame mounted on a tractor with pulling teeth 1.

However, this device produces the uprooting of the mon only by the pushing force of the tractor; therefore, it is not effective on uprooting large stumps when the required tearing force of the mon exceeds the pulling force developed by the tractor.

It is also known a device for lifting, which contains a frame, working bodies in the form of two rotary half-cylinders and a drive (2.

The disadvantage of this device is the increased energy intensity of the process of clearing.

The purpose of the invention is to reduce the energy intensity of the process.

This is achieved by the fact that the device is equipped with an additional frame, which is rotatable in the horizontal plane by means of a hydraulic cylinder, which is mounted on the main frame, and the semi-cylinders are mounted

on an additional frame, and their axes of rotation are located horizontally.

FIG. 1 shows a device, side view; in fig. 2 - the same, top view.

The stump-clearing device includes a frame 2 mounted on a-tractor 1, on which an additional 10 is hinged by means of axis 3 on frame 4, equipped with a bracket 5, on which cylindrical knives are mounted (half-cylinders 6, connected by a hydraulic cylinder of their rotation 7.

The lower ends of the knives are cutting parts that can be smooth or serrated.

Additional frame 4 has stops

8, in contact with knives. 6, which at the point of contact have tides

20

9. The additional frame 4 is connected with the frame 2 by the hydraulic cylinder 10 of its rotation.

Raising and lowering the stump grubbing device is a hydro-. 25 cylinders 11.

The device works as follows.

In the initial position, the knives 6 using the hydraulic cylinder 7 divorced

30 before contact with stops B.

When clearing, knives 6 are mounted above the stump. Then, using hydraulic cylinders 11, they are lowered all the way into the soil and forcibly pushed into the ground, cutting the roots around mon. Simultaneously with pressing the knives 6 into the soil, they are reciprocated by rotating the hydraulic cylinder 10 alternately to pull and push the stem (manually or automatically).

After insertion of the knives to a certain depth, limited by the stroke of the hydraulic cylinders 11 or special forces limited (not shown), the hydraulic cylinder 7 is put on to push the rod out.

When the hydraulic cylinder 7 is triggered, the six stations 6 turn, moving closer to each other, and compress the stump. With further reciprocating rotation of the compressed knives of 6 mon, the tearing off (unscrewing) of the roots not cut by the knives 6 is performed.

When the device is lifted by hydraulic cylinders 11, the compressed knife 6 is removed from the ground. In the raised position, the stump is taken by the tractor to the place of storage, unloading of the mon knives 6 by means of the hydraulic cylinder 7 is separated to the side 8, after which the stump under its own weight is lowered onto the soil surface.

Making the tool body in the form of two semi-cylindrical knives mounted rotatably in the vertical plane reduces the energy consumption of the rooting by cutting off (unscrewing From the taproot roots, as well as simplifying the design of excluding a special mechanism for picking and pulling mon.

Claims (2)

1.Albov M.P. Mechanization of work on the renewal of the forest. M., Lesna industrial, 1966, p. 26-27. 2. USSR author's certificate №209903, cl. A 01 G 23/08, 1966 (prototype).