RU2718844C1 - Device for grinding wood during carrying out thinning of young trees and cutting urban green plantations - Google Patents

Abstract

FIELD: forestry.

SUBSTANCE: invention relates to forest industry and can be used in forestry during carrying out thinning in young growths. Device for grinding wood during cutting of care in young animals and cutting urban green plantations comprises housing in the form of an open cylindrical housing, cutting tool having a scroll-like shape with a cutting edge mounted on a rotating shaft. Cutting element is installed on the shaft at an angle inclined to its axis. In the upper part of the body perpendicular to the axis of rotation of the cutting member there is a cylindrical roller freely rotating on the axis. In the upper and lower parts of the body at a tangent to the circumference circumscribed by the coil of the largest diameter of the cutting tool, free-running taper rollers are cantileverly mounted on the axles with tops to outside.

EFFECT: invention will make it possible to increase device mobility due to its design simplification.

1 cl, 2 dwg

Description

The invention relates to the forest industry and can be used in forestry when carrying out thinning in young animals.

A device for wood chopping is known, consisting of a self-propelled cart on which a cutting body is installed, having a hollow body with a conical screw located inside it, and a cutting body drive, while the body has receiving and holding levers in the upper part with removable knives for cutting knots, and the lower part of the body is equipped with a curved pipe for directional removal of chopped wood. The cart and the working body are driven by a hydraulic motor. (USSR AS No. 592393 Announced on March 16, 73 Bull. No. 6, published March 24, 1978).

The disadvantage of this device is that it requires a mobile hydraulic power station to power the hydraulic equipment of the drive of the working body and the undercarriage of the trolley, as well as flexible hydraulic communications, which can cause difficulties when moving the device through the forest.

The closest in technical essence to the invention is a device for chopping wood, consisting of an open cylindrical casing in which a shaft of a cutting body having a cochlear shape is fixed and a feeding device made in the form of ribbed drive rollers located in mutually perpendicular planes. The generators of some rollers coincide with the tangent to the circle described by the turn of the largest diameter of the cutting organ, and the axes of the others are perpendicular to the axis of rotation of the cutting organ, which helps to keep the tree in an upright position when cutting and grinding. (USSR AS No. 409686 Declared November 1, 1972. Bull. No. 1, published May 6, 1974).

The disadvantage of this device is the complexity of the drive ribbed drive rollers located in mutually perpendicular planes.

The objective of the invention is to simplify the design of the device for chopping wood during thinning in young trees and trimming urban green spaces, increasing its mobility when performing the process.

This object is achieved in that the device for chopping wood during thinning in young trees and trimming urban green spaces, contains a body in the form of an open cylindrical casing, a cutting body having a cochle shape with a cutting edge mounted on a rotating shaft, according to the invention, the cutting body is installed on a rotating shaft, oblique at an angle to its axis, in the upper part of the housing perpendicular to the axis of rotation of the working body is mounted freely rotating on the axis of the cylindrical roller and in the upper and lower parts of the body on a tangent to a circle described by a coil of the largest diameter of the cutting body on the axes freely rotating conical rollers with their vertices outwardly mounted.

The drawings show a device for chopping wood during thinning in young trees and trimming urban green spaces, FIG. 1 is a side view, FIG. 2 is a plan view.

The device comprises a housing 1 in the form of an open cylindrical casing, a drive motor 2 (used from a chainsaw of appropriate power), a gearbox 3, a drive shaft 4, a cutting body 5 with an edge made along a logarithmic spiral, mounted on the shaft 4 obliquely at an angle to its axis, this is mounted in the upper part of the housing perpendicular to the axis of rotation of the cylindrical roller 6 freely rotating on the axis, and in the upper and lower parts of the housing on a tangent to the circle described by the coil of the largest diameter of the cutting body on exclusive to them alone cantilever mounted freely rotating conical rollers 7 and 8 vertices outward than the wood supply is achieved by grinding and retaining its stem in a vertical position after cutting and grinding, housing 1 is provided with a fifth bearing 9, the control handle 10 and a receiving casing 11.

The device operates as follows.

The device, held by the control handle 10 and resting on the supporting heel 9, is fed to the chopped tree with the open side of the casing 1, the tree trunk is captured by the cutting body 5 mounted on the shaft 4 at an angle to its axis, which is rotated from the engine 2 through the gearbox 3 and jammed between the cutting body 5 and the rollers 7 and 8. Rotating, the cutting body 5 is embedded in the wood of the trunk and cuts it, while moving the tree due to the inclined installation on the shaft 4 from top to bottom. Due to the taper of the rollers 7 and 8, the tree trunk is pressed against the working body 5, its displacement in the direction of rotation is excluded by focusing on the cylindrical roller 6, the cut off parts of the wood are thrown from the open part of the housing 1 to the ground. The cutting body 5 cuts a tree trunk with branches into segments of a length equal to the pitch of the turn of the cutting body 5, with a continuous feed along the axis of rotation until the tree is completely chopped. A stable vertical position of the tree during grinding is achieved by clamping on one side the blade of the cutting body 5 and on both sides by rollers 6, 7 and 8. The branches on the tree trunk are compressed by the receiving casing 11 and are also crushed. Thus, a tree with branches is chopped at the place of growth without falling, cutting products are scattered on the ground and do not pose a fire hazard.

Using the proposed device will allow you to create light motorized equipment for chopping wood during thinning in young trees and cutting urban green spaces and eliminate manual labor on thinning, and cutting products do not pose a fire hazard and do not require removal from the forest and disposal. Increased mobility during the process is achieved by simplifying the design of the device for chopping wood during thinning in young trees and pruning urban green spaces.

Claims (1)

A device for chopping wood during thinning in young trees and for trimming urban green spaces, including a body in the form of an open cylindrical casing, a cutting body having a cochle shape with a cutting edge mounted on a rotating shaft, characterized in that the cutting body is mounted obliquely under the rotating shaft angle to its axis, while in the upper part of the housing perpendicular to the axis of rotation of the cutting body mounted mounted on the axis of the cylindrical roller, and in the upper and lower parts of the housing on a tangent to a circle described by a turn of the largest diameter of the cutting body, freely rotating conical rollers with outward vertices are cantilevered on the axes.

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