RU1770168C - Logging equipment of self-propelled chassis - Google Patents

Abstract

Usage: refers to skidding devices and can be used in forestry and forest industry. SUBSTANCE: equipment comprises an arched boom mounted on a chassis (3) with a jaw grab (4) and a shield (5) mounted on the lower end of the boom

Description

The invention relates to skidding devices and can be used in the forestry and forestry industries, mainly in thinning.

A skidding device for bezkuschernogo skidding of trees is known, comprising a support beam with a jaw grip and side end-supports. It is not adapted to align the ends of the logs in the bundle and does not provide a clear fixation of the bundles of short logs. This leads to the loss of logs during skidding and even scattering packs.

(1).

Skidding equipment is known comprising an arched boom mounted on a chassis with a jaw grab and a shield mounted on the lower end of the boom with the possibility of rotation in a vertical longitudinal plane (2).

A disadvantage of the known equipment is the unreliable fixation of the bundle, which leads to bundle clutter during skidding and the formation of forest bundles.

The purpose of the invention is to increase operational capabilities.

This goal is achieved in that the skidding equipment of the self-propelled chassis, comprising an arched arm with a jaw grab mounted on the chassis and a shield mounted on the lower end of the boom with the possibility of rotation in a vertical longitudinal plane, is provided with upper and lower rods, with the upper rods pivotally attached to the ends with the possibility of rotation in the indicated plane, respectively, to the upper part of the shield and to the arrow, and the lower rods made shorter than the upper rods are pivotally connected by ends with the possibility of rotation in said plane to the boom and to the lower part of the shield.

In addition, the vertical arches of the arched boom are interconnected by a cross in the form of an arc to provide coverage of the bundle of assortments and prevent its oscillations in the horizontal plane, while the distance between the vertical racks of the boom is equal to the maximum distance between the maximally open jaws of the grasp.

In FIG. 1 shows equipment; in FIG. 2 is a view A in FIG. 1,

The skidding equipment of the self-propelled chassis contains mounted on the chassis 1 of the tractor by means of a link 2 an arched boom 3 with a jaw grab 4 and a shield 5 mounted on the lower end of the boom by means of the upper arms 6 and lower

t g 7 with the possibility of rotation in a vertical longitudinal plane. The upper rods 6 are pivotally attached by the ends with the possibility of rotation in the indicated plane respectively to the upper part of the shield 5 and to the boom 3, and the lower rods 7 made shorter than the upper 6 are pivotally connected by the ends with the possibility of rotation in the indicated plane to the arrow and to the lower part

the shield, the lower part of the boom, its vertical posts 8 are interconnected by a cross-beam 9 made in the form of an arc to provide coverage of the bundle of assortments and to prevent its fluctuations in the horizontal plane. The distance between the struts 8 is equal to the maximum distance between the maximally open jaws of the grip.

The equipment operates as follows.

When thinning, when thinning the chassis 1 of the tractor with skidding equipment, drives into the technological corridor, turns around and the rear

moves closer to the assortments, stops, opens the jaws of the grab 4, lowers the boom 3 and starts moving again. In this case, the shield 5 rests against the assortments and shifts them, alignment occurs

ends, the tractor stops, boom 3 rises to its highest position. The tractor starts reversing again and when the shield 5 is behind the ends of the assortments at a distance of 20-50 cm,

stops. The boom 3 lowers down, while the cross-beam 9 saddles a pack of assortments. The shield 5, abutting the assortments, as the arrow 3 is lowered, rotates at a certain angle to the assortments. The jaw of the grab 4 begins to compress the assortments, they regroup and a bundle is formed. The boom 3 rises to the upper position and raises the bundle. The center of gravity of the bundle is outside the grasp 4 on the opposite side from the shield 5. The resulting overturning moment presses the packet against the cross member 9. The packet is fixed against a turn. The oval profile of the cross member 9 fits

the pack, while the shield 5, abutting the pack at an acute angle, prevents the pack from moving out from under the cross member 9 during skidding. In a suspended position, a bundle of short grades assimilates to the loading bay.

Claims (2)

SUMMARY OF THE INVENTION 1. Skidding equipment of a self-propelled chassis comprising an arched jib boom mounted on the chassis with a jaw grab and a shield mounted on the lower end of the boom to be rotatable in a vertical longitudinal plane, characterized in that, in order to increase operational capabilities, it is provided with upper and lower rods, and the upper rods are pivotally attached by the ends with the possibility of rotation in the indicated plane, respectively, to the upper part of the shield and to the arrow, and the lower rods made shorter than the top their rods pivotally attached, with the ends 0 rotation in the indicated plane to the arrow and to the bottom of the shield. 2. The equipment according to claim 1, characterized in that the vertical posts of the arched boom are interconnected by a cross in the form of an arc to provide coverage of the bundle of assortments and prevent its vibrations in the horizontal plane, while the distance between the vertical posts of the boom is equal to the maximum distance between maximally open jaws of capture.