SU1714223A1

SU1714223A1 - Hydraulic distributor

Info

Publication number: SU1714223A1
Application number: SU884606848A
Authority: SU
Inventors: Владимир Семенович Ретинский; Михаил Владимирович Трусов
Original assignee: Retinskij Vladimir S; Trusov Mikhail V
Priority date: 1988-10-10
Filing date: 1988-10-10
Publication date: 1992-02-23

Abstract

Изобретение относитс к угольному машиностроению, в частности к средствам управлени механизированными креп ми. Применение изобретени позволит расширить функциональные возможности гидрораспределител путем управлени двум гидродвигател ми, повысить надежность. Гидравлический распределитель содержит корпус 1, 6 сквозной расточке которого размещены три неподвижные втулки 12-14 с двум распорными втулками между ними. В неподвижных втулках 12-14 установлен золотник 7 с четырьм радиальными эластичными уплотнени ми 17-20, образующими вместе с втулками последовательно расположенные управл ющую 2, рабочую 3, напорную 5, вторую рабочую 4 и сливную 6 камеры. В напорной 5 и второй рабочей 4 камерах размещены защитные втулки 21 и 22, взаимодействующие с соответствующими радиальными уплотнени ми 18 и 20. В золотнике 7 выполнены радиальные отверсти 10 и 9 и осевой канал 8, сообщающие между собой рабочие камеры 3 и 4. Сквозна расточка закрыта с одной стороны резьбовой пробкой 23 с возвратной пружиной 27, с другой - пробкой 24 |С толкателем 25 и рычагом 26 управлени . 1 ил.1с' •о27tal Й^25XJСл>&The invention relates to coal engineering, in particular, to means of controlling mechanized supports. The application of the invention will allow to expand the functionality of the hydraulic distributor by controlling two hydraulic engines, to increase the reliability. The hydraulic distributor includes a housing 1, 6 of a through bore of which three stationary sleeves 12-14 are placed with two spacer sleeves between them. In stationary sleeves 12-14 a spool 7 is installed with four radial elastic seals 17-20, which form together with the sleeves sequentially located control 2, work 3, pressure 5, second work 4 and drain 6 chambers. In the pressure 5 and the second working 4 chambers are placed protective sleeves 21 and 22, interacting with the corresponding radial seals 18 and 20. In the spool 7 there are radial holes 10 and 9 and an axial channel 8, connecting the working chambers 3 and 4 to each other. On one side, the threaded plug 23 with a return spring 27 is closed, on the other hand, the plug 24 | With the pusher 25 and the control lever 26. 1 Il.1s' • O27tal TH ^ 25XJSL > &

Description

Изобретение относится к угольному машиностроению, в частности к средствам управления механизированными крепями.The invention relates to coal engineering, in particular to controls for powered roof supports.

Цель изобретения - расширение функциональных возможностей гидравлического распределителя путем управления двумя гидродвигателями.The purpose of the invention is the expansion of the functionality of the hydraulic distributor by controlling two hydraulic motors.

На чертеже представлен гидравлический распределитель, разрез.The drawing shows a hydraulic distributor, section.

Гидравлический распределитель содержит корпус 1 с камерами управляющей 2, рабочими 3 и 4, напорной 5, сливной 6 и золотник 7 с осевым каналом 8, радиальными отверстиями 9 и 10 и пробкой 11, размещенный в неподвижных втулках 12-14 корпуса 1, между которыми установлены распорные втулки 15 и 16. Золотник 7 имеет радиальные эластичные уплотнения 17-20 и защитные подпружиненные втулки 21 и 22. Сквозная расточка корпуса 1 закрыта с одной Стороны резьбовой пробкой 23. а с другой - пробкой 24, в которой установлены толкатель 25 и рычаг 26. Золотник 7 подпружинен пружинами 27 и 28.The hydraulic distributor comprises a housing 1 with control chambers 2, workers 3 and 4, a pressure 5, a drain 6 and a spool 7 with an axial channel 8, radial holes 9 and 10 and a plug 11, located in the stationary bushings 12-14 of the housing 1, between which are installed spacer sleeves 15 and 16. The spool 7 has radial elastic seals 17-20 and spring-loaded protective sleeves 21 and 22. The through bore of the housing 1 is closed on one side by a threaded plug 23. and on the other by a stopper 24, in which the pusher 25 and the lever 26 are installed Spool 7 is spring-loaded with springs 27 and 28.

Гидравлический распределитель работает следующим образом.The hydraulic distributor operates as follows.

В исходном положении пружины 27 и 28 поджимают золотник 7 вверх, п|зи этом рабочая камера 3 сообщена со сливной камерой 6 через радиальные отверстия 10 и 9 и осевой канал 8, а рабочая камера 4 - через кольцевой зазор между золотником 7 и втулкой 14.In the initial position, the springs 27 and 28 press the spool 7 up, and thus the working chamber 3 is in communication with the drain chamber 6 through radial holes 10 and 9 and the axial channel 8, and the working chamber 4 through the annular gap between the spool 7 and the sleeve 14.

При ручном включении посредством рычага 26 или при подаче рабочей среды в камеру 2 управления золотник 7 перемещается вниз. При этом защитная втулка 22 подходит к втулке 14,после чего уплотнение 20 перек.рыаает кольцевой зазор между золотником 7 и втулкой 14, одновременно уплотнение 18 входит во взаимодействие с защитной втулкой 21, расположенной в напорной камере 5. Рабочая камера 3 сообща ется с напорной камерой 5 непосредственно, а рабочая камера 4 - через рабочую камеру 3, радиальное отверстие 10, осевой канал 8 и радиальное отверстие 9. Камера слива 6 отсекается от рабочей камеры 4 посредством уплотнения 20.When manually turned on by means of the lever 26 or when the working medium is supplied to the control chamber 2, the spool 7 moves down. In this case, the protective sleeve 22 approaches the sleeve 14, after which the seal 20 crosses the annular gap between the spool 7 and the sleeve 14, while the seal 18 interacts with the protective sleeve 21 located in the pressure chamber 5. The working chamber 3 communicates with the pressure head camera 5 directly, and the working chamber 4 through the working chamber 3, the radial hole 10, the axial channel 8 and the radial hole 9. The drain chamber 6 is cut off from the working chamber 4 by means of a seal 20.

При прекращении воздействия управляющего элемента пружины 27 и 28 возвращают золотник 7 в исходное положение. При этом уплотнение 20 входит во взаимодействие с защитной втулкой 22, а уплотнение 18 - с втулкой 12, напорная камера 5 отсекается от рабочей камеры 3 и сообщается через радиальное отверстие 10, осевой канал 8 и радиальное отверстие 9 с рабочей камерой 4, которая, в свою очередь, сообщается через кольцевой зазор между золотником 7 и втулкой 14 с камерой 6 слива.Upon termination of the control element, the springs 27 and 28 return the spool 7 to its original position. In this case, the seal 20 interacts with the protective sleeve 22, and the seal 18 interacts with the sleeve 12, the pressure chamber 5 is cut off from the working chamber 3 and communicates through the radial hole 10, the axial channel 8 and the radial hole 9 with the working chamber 4, which, in in turn, it is communicated through an annular gap between the spool 7 and the sleeve 14 with the drain chamber 6.

Claims

The invention relates to coal engineering, in particular, to means of controlling mechanized supports. The purpose of the invention is to enhance the functionality of the hydraulic distributor by controlling two hydraulic motors. The drawing shows a hydraulic distributor, section. The hydraulic distributor comprises a housing 1 with control chambers 2, operating 3 and 4, pressure 5, a drain 6 and a valve 7 with an axial channel 8, radial holes 9 and 10, and a stopper 11, housed in fixed bushings 12-14 of housing 1, between which are equipped with spacer sleeves 15 and 16. Spool 7 has a rad11a. elastic seals 17-20 and spring-loaded protective sleeves 21 and 22. Along the side of the bore of the housing 1 is closed the threaded plug 23 on one side and the plug 24 on the other side, which is equipped with a thumbsgun 25 and a lever 26. The spool 7 is spring loaded; We are 27 and 28. The hydraulic distributor works as follows. In the initial position of the spring 27 and 28, the spool 7 is pressed upwards, n |) and this working chamber 3 communicates with the drain chamber 6 through the radial holes 10 and 9 and the axial channel 8, and the working chamber 4 through the annular gap between the spool 7 and the sleeve 14. When manually turned on by means of the lever 26 or when the working medium is supplied to the control chamber 2, the spool 7 moves down. The protective sleeve 22 approaches the sleeve 14, after which the seal 20 overlaps the annular gap between the valve 7 and the sleeve 14, while the seal 18 interacts with the protective sleeve 21 located in the pressure chamber 5. The working chamber 3 communicates with the pressure chamber 5 directly and the working chamber 4 through the working chamber 3, the radial hole 10, the axial channel 8 and the radial hole 9. The discharge chamber b is cut off from the working chamber 4 by means of the seal 20. When the action of the spring control element 27 stops 7 the spool 28 is returned to its original position. The seal 20 interacts with the protective sleeve 22, and the seal 18 with the sleeve 12, the pressure chamber 5 is cut off from the working chamber 3 and communicates through the radial hole 10, the axial channel 8 and the radial hole 9 with the working chamber 4, which the turn is communicated via an annular gap between the spool 7 and the sleeve 14c with the discharge chamber 6. Claims of the invention A hydraulic distributor, comprising a housing with a pressure, drain, working and control channels, connected to the control element, a spring-loaded spool with elastic radial seals, mounted in fixed sleeves of the housing to form a control, pressure, working and drain chambers, spring-loaded protective sleeves, one of which is installed in the working chamber, and the other - in the pressure sleeve, characterized in that, in order to extend the functionality by controlling two hydraulic motors E, the hydraulic distributor is provided with a second working chamber formed by the groove of the spool and the fixed housing sleeve, the protective sleeve pressure chamber is mounted for radial seal engagement with the spool, the spool in an axial channel and radial holes, communicating with each other working chambers.