SU677727A1

SU677727A1 - Tree-cutting device

Info

Publication number: SU677727A1
Application number: SU772511219A
Authority: SU
Inventors: Василий Николаевич Смолин; Владимир Семенович Муратов; Геннадий Иванович Киреев
Priority date: 1977-08-01
Filing date: 1977-08-01
Publication date: 1979-08-05

Description

1one

Изобретение относитс к устройствам дл срезани деревьев и может быть использовано в лесной промышленности.The invention relates to a device for cutting trees and can be used in the forest industry.

Известно устройство дл срезани деревьев , монтируемое преимушественно на лесозаготовительной машину включающее пильный механизм, гидромотор, трубопроводы дл рабочей жидкости, гидроципиндр подачв пильного механизма, редукционный обратный клапаны и дросселирующее устройство l.A tree-cutting device, which is mainly mounted on a logging machine, includes a sawing mechanism, a hydraulic motor, pipelines for the working fluid, a hydraulic piston for feeding the sawing mechanism, a reducing check valve and a throttling device l.

Недостаток его заключаетс в том, что оно обеспечивает регулирование скорости подачи пильного механизма только в процессе пилени , но не решает задачи быстрого подвода пильного механизма к дереву до начала процесса пилени .Its disadvantage lies in the fact that it provides regulation of the feed rate of the saw mechanism only during the sawing process, but does not solve the problem of quickly supplying the saw mechanism to the tree before the sawing process begins.

Известно также устройство дл срезани деревьев, монтируемое на лесозаготовительной машине, включающее пильный механизм , гидромотор, трубопроводы дл рабочей жидкости и гидродилиндр поцачи пильного механизма, поршнева полость которого подключена к напорному трубопроводуIt is also known a tree-cutting device mounted on a logging machine, including a sawing mechanism, a hydraulic motor, pipelines for the working fluid and a hydraulic cylinder of a sawing mechanism, the piston cavity of which is connected to a pressure pipe

гидромотора, а штокова полость - к сливному через регулируемый дросельhydraulic motor, and the rod cavity - to the drain through an adjustable throttle

2.2

Недостаток его заключаетс в том, J что оно не обеспечивает быстрого подвода пильного механизма к дереву до начала процесса пилени .The disadvantage of it is that it does not provide a quick connection of the saw mechanism to the tree before the sawing process begins.

Целью изобретени вл етс сокраще- вне времени наподвод пильного механизQ ма к дереву.The aim of the invention is to shorten the time taken to bring the saw mechanism to the tree.

Достигаетс она тем, что регулируемЬгй дроссель выполнен с обратным :слапаном , а в трубопроводе, соедин ющем штоковую полость гидроцилиндра с сли5 вом, параллельно регулируемому дросселю и обратному клапану установлены дроссель и запорный клапан, причем последний подключен также и к напорному трубопроводу гидроцилиндра подачи пй ь0 ного механизма.It is achieved by the fact that the adjustable throttle is made with a return valve: a slang, and a throttle and a shut-off valve are installed in the pipeline connecting the piston rod of the hydraulic cylinder with a discharge, parallel to the adjustable throttle and non-return valve mechanism.

На чертеже представлена принципиальна схема устройства.The drawing shows a schematic diagram of the device.

Claims

The device contains PNZH.NP mechanism 1, hydraulic motor 2, П1Л (. 3 feeding the saw mechanism 1 to the tree being cut, shut-off valve 4 with spring 5 and plunger b, throttle 7, throttle with regulator and non-return valve 8, pressure 9 and drain 10 and pipelines for the working fluid. The device operates as follows. When the working fluid enters the discharge pipe 9, the shaft of the hydraulic motor 2 rotates and drives the chain of the saw mechanism 1. At the same time, the working fluid enters the piston cavity of the hydraulic cylinder 3, the furnace From cutting rod of hydraulic cylinder 3, the working fluid is divided into two streams, simultaneously flows through the check valve 4 and the throttle 7 into the drain pipe 11 and through the throttle with the regulator and reverse with the valve 8 into the drain pipe 1O. The rapid outflow of fluid from the rod strip of the hydraulic head 3 in two directions contributes to accelerated above the flashing of the saw mechanism 1 on the tree being cut. When in contact with the wood in the injection pipe 9, the pressure of the working fluid increases and last. I act on the plunger 6, compresses the spring 5 of the shut-off valve 4 and regulates to a certain pressure, and completely closes it. All the fluid flow from the rod end of the hydraulic cylinder 3 now passes only through the throttle with the regullate valve and the check valve 8, the shut-off valve 4 in the mine, into the drain pipe 10, thus increasing the DECISION in the rod of the hydraulic cylinder. Increasing the pressure in the rod end of the hydraulic cylinder reduces the speed of pushing 67, or the shear mechanism on the shearing shaft. Removal of the sawing mechanism in reverse toron is carried out by pumping the working fluid through the return valve 8i. Using this technical solution will reduce the time required for the sawing mechanism to cut the tree 2-2.5 times, which in turn will reduce the duration of the entire working cycle. to cut the tree and increase productivity. The invention includes a tree-cutting device mounted on a logging machine, including a sawing mechanism, a hydraulic motor, pipelines for the working fluid and a hydraulic mechanism for supplying the sawing mechanism, the piston cavity of which is connected to the discharge motor and the rod of the hydraulic rod to the drainage through an adjustable throttle If, in order to reduce the time for the saw mechanism to be supplied to the tree, the adjustable choke is made with a check valve and, in the pipeline, is connected with a rod st cylinder with drain, parallel adjustable throttle and a check valve mounted throttle and shut-off valve, the latter also connected to the discharge conduit of the saw feeding cylinder mecha nisms. Sources of information taken into account during the examination 1. USSR author's certificate No. 237476, cl. AA16 23 / O8, 1967.

2. USSR author's certificate N92O2642, class A01 (3 23/08, 1966.