SU660627A1 - Wood-falling machine - Google Patents

Description

one

The invention relates to logging and can be used in logging operations to separate trees from the root with the subsequent pruning of the branches when the trees are upright using gravity.

A forest harvesting machine is known, which includes a self-propelled chassis on which a control is mounted. A articulated jib boom, a cutting head with a telescopic strut with a spring, upper and lower arms, a sawing device and a tree-cutting tool 1 that covers the tree trunk are mounted on the free end.

However, this machine does not allow for continuity of the pruning process and, therefore, does not allow for increasing the productivity of the maschine.

A logging machine is also known for separating trees from the root and subsequent pruning of branches in a vertical position, including a self-propelled machine on which a controllable hinged articulated boom is mounted, containing a support post, upper and lower arms.

a sawing device, a delimbing device, a pushing mechanism with traction bodies and their drive 2.

This forest machine does not allow for the maximum use of gravity when cutting branches.

The purpose of the invention is to improve the performance of the machine when cutting branches.

This is achieved due to the fact that the dragging mechanism is equipped with a device for switching operating modes, included in the form of parallel mounted overrunning and locking couplings, which are mounted between the traction bodies and their actuators.

FIG. 1 shows a structural diagram of the machine, side view; in fig. 2 - kinematic scheme of the pulling mechanism; in fig. 3 - switching device operation modes.

Claims (1)

The machine is a self-propelled chassis 1 with a full rotary platform 2, on which a hinged articulated boom 3 is mounted. At the free end of the boom 3 the machining head 4 is hinged, consisting of a carrier rack 5, an upper 6 and a lower 7 grippers, pulling through mechanism 8, the delimbing device 9 and the sawing unit 10. The pulling-through mechanism consists of two pivoting levers with an actuator 11 mounted in them. This includes the motor 12 and the gearbox 13, the traction bodies 14, mounted horizontally on the leading shaft 15; non-switching device 16, which consists of an overrunning clutch 17, mounted with an inner sleeve stationary on the shaft 18 with a nyyuk 19 and a locking clutch 20, the driven part 21 of which is fixedly mounted on the same shaft and connected to the gear 22 of the gearbox. A leash 24 of the overrunning clutch is fixedly mounted on the output shaft 23 of the hydraulic motor; it is connected with the outer race of the overrunning clutch by means of a pin 25. On the driver's collar, the leading part 26 of the locking clutch is mounted movably in the axial direction, which is connected by means of a plug 27 to a hydraulic cylinder 28 connected via pipelines 29-32 parallel to the motor. The traction organs are provided with a hydraulic cylinder 33 for mixing and dilution. Moving along the cutting area, the machine stops at the next working position. The articulated boom 3 with the processing head 4 fixed on its free end is transferred to the tree intended for the treatment, at that it opens the upper 6 and lower 7 grippers, knives of the delimbing device 9 and pivoting levers with mounted traction bodies on them. After the machining head 4 comes into contact with the tree and the latter is clamped therein, the saw apparatus 10 is turned on. The cut tree is transferred to the branching site (the branch can be cleaned on the side of the machine, forming rolls or heaps, or when working on weak marshy ground - in front of the maschina, on its way, - with the aim of improving the conditions of patency), raise to a height not less than the length of the assortment being sawn and output to an upright position. Then, the upper 6 and lower 7 grips slightly open and turn on the drive 11 of the traction bodies 14 of the dragging mechanism 8. At the same time, the working fluid is fed through pipelines 29 and 32 to the input of the hydraulic motor 12 and simultaneously to the rod cavity of the hydraulic cylinder 28, resulting in the leading part 26 of the blocking Clutches 20 with the help of a fork 27 are disengaged from the driven part 21. The torque from the hydraulic motor 12 is transmitted through an overrunning clutch 17 to the shaft 18 of the gearbox 13. Under the action of the force developed by the traction bodies 14 and its own weight the last tree begins to move through the delimbing device 9. When the tree reaches a falling speed exceeding the maximum speed that the drive 1 1 of the traction bodies 14 can provide, the overrunning clutch 17 automatically turns them off, and when the tree falls, by increasing the resistance forces when cutting branches, to a value equal to the maximum speed, the overrunning clutch 17 automatically connects the actuator 11 of the traction organs 14. Thus, it provides not only a forced passage skivanie but treated wood free fall through the delimbing device 9, that is the maximum force used for cutting imeyuschi.hs gravity on this part of the trunk of branches. When treating trees that require tremendous pulling force to cut the branches, knives of the delimbing device 9 into the wood may be cut, and also when the treated tree is fed upwards to ensure accurate measurement of the lengths of opened logs, the hydraulic motor 12 is switched to reverse rotation, as a result of which the working fluid is supplied in the pipeline 31 and simultaneously through the pipeline 30 in the piston cavity of the hydraulic cylinder 28, while the leading part 26 of the locking clutch 20 engages with the driven part 21, providing oxidation of the overrunning clutch 17 and rotation of the traction bodies 14 in the tree lifting direction. The fall of the tree continues until the end of the butt butt into the ground. After that, the tree is clamped again by the grippers 6, 7 and transferred to the place of the ornamentation hinge. After the first assortment is cut off, the boom 3 with the upper part of the tree clamped is again placed in the position to remove the boughs, and this operation is repeated with the subsequent skewing and decompression of the assortment until the whole tree has been processed. The proposed machine will allow, due to the continuity of the cutting of the branches, with the maximum use of gravity to accomplish useful work, to increase the feed rate of the tree through the processing head, by 1.5–2 times as compared with the known machine, while increasing the productivity by 10-15 % The invention The logging machine for separating trees from the root and subsequent pruning of branches in a vertical position using gravity forces, including a self-propelled vehicle, on which the mounted articulated boom with a machining head containing a carrying strut, upper and lower jaws, saw deliming machine