SU934050A1 - Hydraulic actuating mechanism remote control arrangement - Google Patents

Description

(5A) REMOTE CONTROL DEVICE

HYDRAULIC EXECUTIVE MECHANISM

I

The invention relates to mining and can be used in the control systems of hydroficated crepes, combines in the clearing fences of coal and mining mines.

A device for remote control of hydraulic actuating mechanisms is known, which contains a spool valve in a housing with an actuator, which is made in the form of a rotary cavity, which forms with a controller and controls: cavities, check and shuttle valves t P.

A disadvantage of the known device is the management of only adjacent actuators, which makes it difficult to perform simultaneous operations, and there is also no clear fixation of positions.

The closest in technical essence and Achievable result to the invention is a control device including control lines, head and drain, an actuator control unit comprising a rotary valve with a drive, having a shaft, control and reverse cavities, a control valve and a check valve with a housing C21.

Unreliable fixation of the distributor and the duration of the return of the device to the neutral position reduce the effectiveness of the control mechanisms.

The purpose of the invention is to increase control efficiency by improving fixation of the distributor.

Claims (2)

The goal is achieved by the fact that the device is equipped with an additional control valve installed on control lines, rigidly mounted on the drive shaft, a locking disk with sockets, a check valve is made with a rod forming a chamber with the body, is located with the possibility of 393 interaction of the rod with the disk sockets In this case, the inlet of the check valve and the actuator backflow cavity are connected to the control lines directly, and the check valve chamber through the control valve. The drawing shows the hydraulic circuit of the proposed device. The device contains a common valve 1, control lines 2 and 3 connected to it, control lines k and drain 5, control units for actuating mechanisms 6 (only hydraulic jacks are shown in the drawing), each of which includes actuator 7 with cavity control cavity 8 reverse movement, which, through the shaft 10 and the coupling 11, drives the shaft of the rotary hydraulic distributor 12, the valve 13 controls the locking disk 1 t sockets rigidly fixed on the shaft 10, and the check valve 15, the rod 16 of which interacts with the locking disk The chamber 1 of the control of the check valve 15 is connected to the valve 13 of the control, its input 18 is with the cavity 8 of the drive control 7, and the output 19 of the check valve 15 and the cavity 9 of the drive reverse stroke are each directly connected to the control lines 2 and 3 respectively. The location of the retainer disk 1 strictly corresponds to the position of the rotary valve 12. The device works as follows. In the initial position, the rotary valve 12 is in neutral position, for example, position a, the stem 1b of the check valve 15 is located in the socket B of the locking disk H, the position of which corresponds to the position a of the rotary valve 12, and the common valve 1 is set to position I. For the installation of the rotary valve 12 to the position is fed the corresponding a corresponding signal to the control valve 13, and the working fluid through the control line 2 enters the control chamber 17 of the check valve 15, as a result of which the latter opens and passes the working fluid to the control control chamber 8 of the actuator 7, which is turned through the shaft 10 and the coupling 11 leads into the engine (front rotary shaft of the hydraulic distributor 12. At the same time, the locking disk 1A rotates as a result of which the rod 16 comes out of. sockets b, and further, until the rotary valve is moved); 1 12 to position 0, and the variety. respectively, and the rod 16 does not go into the socket V, the check valve 15 is opened mechanically. As soon as the rod 16 enters the slot 1 of the fixing disk 1, the check valve 15 closes and the supply of working fluid to the cavity 8 of the drive control 7 stops. This is a clear fixation of positions. To return the rotary valve 12 to the neutral position. The common valve 1 is set to position II, i.e. The discharge pressure changes to the control lines 2 and 3, the working fluid through line 3 is fed to the backward cavity 9 of the actuator 7, which rotates in the opposite direction, causing the working liquid to be expelled from its control cavity 8 and fed to inlet 18 the check valve 15, the latter opens, the shaft 10 under the action of the actuator 7 is set in motion, and the rotary valve 12 is set to the neutral position. To switch the rotary valve to any other position and reverse the transition to the neutral position, the cycle is repeated. Thus, the introduction into the proposed device of a common distributor, a locking disk and a check valve and their corresponding connection not only makes it possible to clearly fix the positions, but also, most importantly, to effectively manage operations in any sequence. Claims of the Invention A remote control device for a hydraulic actuator, including control lines, head and drain, an actuator control unit, comprising a rotary hydraulic distributor with a drive having a control and reverse cavity, a control valve, a check valve with a housing, and in order to increase the control efficiency by improving the fixation of the hydraulic distributor, it is equipped with a fixing disk fixed to the drive shaft Dami and additional control valve installed on the control line, and the check valve is made with a rod forming a chamber with the body, and is located in the possibility of interaction of the rod with the DisCcocedf / v i / ene f ffme u / m fte} ffffti / 3fiOff sockets In this case, the inlet of the check valve and the actuator backflow cavity are directly connected to the control lines, and the check valve chamber is connected through the control valve. Sources of information taken into account in the examination 1, USSR Author's Certificate Vf 523988, cl. E 21 D 23/16, TE. 2. USSR author's certificate No. 529293, cl. E 21 D 23/16, 1973 (prototype).