SU983028A1 - Apparatus for skidding trees - Google Patents

Description

The invention relates to forestry equipment and can be used in the forest industry or forest management for logging trees by wheeled skidders.

A device for hauling trees, comprising a self-propelled chassis on which a winch with a pulling rope is installed, and a pivoting boom equipped with a gripper comprising a body with jaws attached thereto, within which a crimping and damping device interacting with a hydraulic device is known. cylinder mounted on one of the jaws 1.

The disadvantage of the device is unreliable compression of small tree packs, the inability to regulate the volume of treated wood, which ultimately affects the productivity of the machine during transport operations.

The purpose of the invention is to increase the labor productivity and reliability of the process of skidding by improving the reduction of the pack of trees in the jaw grip during various crimps of truned wood.

This goal is achieved by the fact that the second jaw is equipped with an additional hydraulic cylinder, and each jaw is equipped with a guide and two-arm lever, the components of which are interconnected by an elastic element, with one lever arm in the middle part pivotally connected to the hydraulic cylinder rod, and the other

10, the free end is equipped, which is equipped with movable rollers with a rope that is missed between them and moving along guides, while on the other arm of the lever the mentioned 15, laid rope is rigidly stocked.

FIG. 1 shows the device, a general view; in fig. 2 - jaw grip assembly.

Device for hauling trees

20 consists of a frame 1, a self-propelled chassis 2, a skidder tractor and contains an arch 3, driven} by a hydraulic cylinder 4, a winch 5 with a pull rope 6 slung over a horizontal roller 7 arch 3 and fixed to the body 8 of the maxillary grip 9. Swiveling jaws 10 and 11 are pivotally attached to the housing 8 and are driven by a hydraulic cylinder 12.

Claims (1)

30 In the casing of the rotary jaws, two shoulders are mounted, made up of parts 13, 14 and 1 16, interconnected by elastic elements 17 and 18, which can be rotated about axes 19 and 20 under the action of hydraulic cylinders 21 and 22, the rods of which are connected respectively to Parts 13 | and 15. Parts 13 and 15 are connected by couples 23 and 24 to pairs of rollers 25 and 26, which can be moved with guides 27 and 28, and are equipped with stops 29 and 30 for turning parts 14 and 16. Parts 14 and 16 are interconnected by a flexible element (rope) 31, mouth Anchored to move in two pairs of movable rollers 25 and 26. In the body of the jaws 10 and 11 there are special openings 32 and 33 for parts 14 and 16 and openings 34 and 35 for the flexible element 31. The machine contains a shield 36 driven by a hydraulic cylinder 37 The device works as follows. The tractor driver backs up to a pack of pre-prepared trees, disarms winch 5, lowers the arch 3 with hydraulic cylinder 4, simultaneously opening jaws 10 AND AND hydraulic cylinder 12, pointing them at a pack of trees. At this moment, the hydraulic cylinder rods 13 and 14 are retracted, as shown by the main lines. In the next moment, the hydraulic cylinder 12 swivels the jaws 10 and 11 is reduced. If necessary, additional reduction of the bundle inside the gripper 9 is carried out using the length of the rope 31 as follows. The rods of the hydraulic cylinders 21 and 22 are advanced by turning the levers 13, 14 and 15, 16, which will take the position shown by thin lines. At the same time, by moving the rollers 25 and 26 downwards and turning 14 and 16 connected to the rope segment 31, the jaw grip volume will decrease, and this in turn will allow the bag to be pressed in the grip 9. The presence of elastic elements 17 and 18 between the levers 13 14 and 15, 16 will improve compression and reduce dynamic loads in the process of moving on uneven and cornering, when there is a rolling of trees in the grip. The stops 29 and 30 on the pivot portions 13 and 15 allow the return of part 14 and 16 to its original position. At the place of unloading, the rods of the hydraulic cylinders 21 and 22 are drawn in, the length of the crimping cable 31 allows the jaws 10 and 11 to be opened by the hydraulic cylinder 12, after which the bundle is lowered to the ground. In the event of overcoming the obstacle, the bag is lowered to the ground, in the jaw grip 9, the cable 6 is tied up with a winch 5, the jaws are opened, the winch is released. crimping rope 31 and transports to the place of unloading. The use of the proposed device for skidding will increase the reliability of retaining a package of trees during transportation, partially reduce the dynamic loads in the gripping device during movement along the unevenness of the cutting area, thereby increasing the productivity of the tree hauling process by 14-17%. The invention is a device for hauling trees, comprising a self-propelled chassis on which a winch with a traction cable is installed, and a swivel boom equipped with a claw, including a body with jaws attached to it, inside which is a crimping and shock-absorbing device interacting with a hydraulic cylinder mounted on one of the jaws, characterized in that, in order to increase labor productivity and reliability of the process of skidding by improving the reduction of the pack of trees in the maxillary cavity The grip for various crimps of trelable wood, one of the jaws is provided with an additional hydraulic cylinder, and each of the jaws is equipped with a guide and two-arm lever having. pivotally connected shoulders connected by an elastic element, one lever arm in the middle part pivotally connected to the hydraulic cylinder rod, and the other end is equipped with a pull rod with movable rollers with a rope between them and moving along guides while on the other shoulder 1; yachats tightly stock the mentioned rope. Sources of information taken into account in the examination 1, USSR Copyright Certificate 751794, cl. B 66 F 9/12, 07.30.80. / "