SU1296053A1 - Stump puller - Google Patents

Abstract

FIELD: forest industry. The purpose of the invention is to increase the efficiency of stump uprooting, preferably with a core root system. The stump lifter contains mounted on the propeller 1 by means of a hinged device 2 frame 3 with a working body 4 pivotally mounted on it and hydraulic drive 7. The working body is made in the form of a double-arm lever. The upper shoulder is a box girder, and the lower shoulder has at least three writhing, their canines rigidly interconnected. The middle canines 6 relative to the lateral 5 are shortened and directed downwards at an angle of 20-30 °. to the side. The length of the middle canines is 0.65-0.75 of the length of the lateral ones. The distance between the outer surfaces of the lateral canines is no more than their length. The tool body is brought under the stump in such a way that the side canines are first introduced, as if covering the chain from two sides, and then the middle canines. At the same time, the stump due to this arrangement of the canines is pulled out of the soil as a whole along with the root system, is well fixed on the working body, and there is no disturbance of the humus layer between mon. 4 il. F (L N3 CO o ate 00 .1

Description

The invention relates to machines for uprooting stumps and can be used in the forest industry.

The aim of the invention is to increase the efficiency of root stumping, mainly with a taproot.

Figure 1 shows the stump lifter, a general view; figure 2 is the same, the view in the plan; on fig.Z - working body of the upravel, side view; figure 4 is the same, view in plan.

The stump rooting unit contains a propulsion unit 1, a hinged device 2, a working member 4 hinged on the frame 3, I have W.I. the area from logging residues frame 3 can be equipped with dumps 9.

The working body 4 is made in the form of a two-arm lever, one shoulder of which (upper) is a box-section beam, and the other (lower) arm is rigidly interconnected with writhing fangs. The total number of writhing canines must be at least three, of which two side writhing canines 5 have a length t, and the length i of an average canine 6 must be 0,, 75. The total number of writhing canines may be more than three, and of the total number of writhing canines, two canines are necessarily lateral with a length t, and the remaining (medium) ones have a length Ei. The length of the lateral canines, depending on the maximum dimensions of the root system of the stumps, as well as the distance between the outer surfaces of the lateral canines 6, are assigned depending on the vegetation zones.

The middle canine 6 is directed downwards at an angle of 20-30 ° to the lateral canine teeth 5.

The angle between the lateral 5 and middle 6 writhing fangs and their length ensure the full introduction of the canines under the stump and pulling out the whole mon together with the root system and good fixation of it on the working body.

The distance between the outer surfaces of the lateral canines 5 should be no more than their length. The width of the working body, i.e. the distance between the outer surfaces of the lateral canines, is interconnected with the length of the latter, and ensures that the mon system with the root system that has the largest size in the region is placed on the working body. The width of the working body should not exceed the length of the lateral canines, regardless of the total number of the latter.

The device works as follows.

When approaching the stump at a distance, which allows the lowering equipment to be lowered as close as possible to the protruding part of the train, the working body 4 is continuously inserted under the stump by moving the tractor forward. So

as the middle canine is shortened and bent down relative to the lateral, the lateral canines 5 first come into operation, they cover the writhing stump, not splitting it.

At this time, the middle canine is located approximately at the central root. In this position, the working body 4 is prepared for lifting mon. Then the working body 4 is turned around the joint 10 by means of hydraulic cylinders 8 relative to the frame

3 until the stump is completely out of the ground. In this case, the stump rises predominantly vertically and all the roots, due to the good introduction of the lateral canines 5, are freed from the soil gradually and completely.

for one working reception. After the release of the Mon from the ground by the hydraulic actuators 7 of the hinged device, the frame 3 together with the working body 4 and the stump are raised to the transport position. In this case, the stump is located on the working body 4 in such a way that its

The center of gravity is closer to the end point of the middle canine 6, and the root system rests on the lateral canines 5, i.e. the stump is fixed on the working tool 4. Then, with the movement of the tractor, the uprooted mon is transported beyond the cleared area. Due to the fact that in the process of grubbing, the lateral canines, as if covering the stump on both sides, make it possible to bring the working organ as close as possible to the stump without splitting its

in part, a more reliable extraction of the mon is ensured from the soil. At the same time, by reducing the leverage of the force of uprooting, the energy intensity of the process is reduced. A reduction in the number of entrances to the stump prevents the disturbance of the fertile

soil layer. The displacement of the center of gravity of the plate closer to the middle of the working body prevents it from stalling from the canines to the cleared area. In addition, by reducing the number of entrances to the stump and good fixation of the mon on the working body at the time of removal from the soil, the productivity of uprooting increases.

Claims (1)

Invention Formula A stump lifter, including a frame with a working body hinged on it, in the form of three fangs that are rigidly connected to each other, and a hydraulic actuator, characterized in that, in order to increase the efficiency of stump removal, with a core root system, the middle canine relative to the lateral ones is shortened and when the ratio of the length of the average canine to the length of the side canine 0,65-0,75 is directed downwards at an angle 20-30 ° to the lateral, with the distance between the outer surfaces of the lateral canines no more than their length. fig.Z five FIG.