SU1333882A1 - Stepped displacement hydraulic drive - Google Patents

Abstract

The invention can be used in hydraulic mechanisms with step-by-step movement of the executive organ. The purpose of the invention is to simplify the design. The working cavity 2 of the actuating cylinder 1 communicates with the cavity 5 of the dispenser 6 through the on-off valve 3. When the distributor 3 is switched to the second position, the cavity 5 communicates with the pressure source 4 and is filled with the working fluid whose pressure is determined by the valve 9 pressure setting and the throttle 10 embedded into the through channel 8 of the piston 7 of the dispenser. When squeezing a portion of the working fluid from the cavity 5 of the dispenser, it is discharged from the drain cavity 14 of the hydraulic cylinder 1 through the throttle 15. 1 sludge. sl and

Description

The invention relates to marsh-building hydraulics and can be used in hydraulic mechanisms with step-by-step movement of the actuator.

The purpose of the invention is to simplify the design.

The drawing shows the scheme described hydraulic drive.

The hydraulic actuator includes an actuating hydraulic cylinder 1, the working cavity 2 of which through an on-off valve 3 connected to a source 4 of pressure is connected to the cavity 5 of a dispenser 6 containing a piston 7 with a through channel 8 in which a pressure valve 9 is installed and a throttle 10i The cavity 11 of the dispenser 6 is connected through an on-off valve 12 with a pressure source 4 and a drain 13, and the drain cavity 14 of the hydraulic cylinder 1 is connected to the drain 13 via a throttle 15.

The hydraulic actuator works as follows.

By switching the distributor 3, the working cavity 2 of the hydraulic cylinder 1 is locked and the cavity 5 of the dispenser is connected to the pressure source 4, as a result of which the piston 7 of the dispenser moves to the right position in the drawing. The pressure valve 9 and the throttle 10 provide the specified pressure in the cavity 5 after the piston 7 stops.

Switching the distributor 3 to the left position in the drawing, and distributor M. Dylyn

Compiled by V.Primazov Tehred L. Serdyukova

Order 3941/32 Circulation 639Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

divider

12, the piston 7 injects a portion of the working fluid into the hydraulic cylinder cavity 2 for its step movement, after which the valves 3 and 12 are switched to repeat the flow cycle of the cavity 5 and the next step movement of the hydraulic cylinder 1.

Formula

the invention

A stepper hydraulic actuator containing an actuating hydraulic cylinder, a piston metering device, one of the cavities of which is connected to one of the cylinder cavities, and the second metering cavity is connected to a pressure source and a drain through a two-way valve, a second-controlled pressure valve, characterized by that, in order to simplify the design, he

equipped with two throttles, the second distributor is installed in the communication line of the dispenser with the cylinder cavity, which is working, the drain cylinder cavity is connected to the drain through one of the throttles, one of the lines of the second distributor is connected to the pressure source, and the dispenser piston is made with through 1m a channel communicating the cavities of the dispenser among themselves, in which a pressure valve is in series installed with an inlet to the cavity communicated with the hydraulic cylinder and a second choke.

Proofreader V. But ha

Claims (1)

Claim The hydraulic actuator of the stepper movement contains an executive hydraulic cylinder, a piston metering device, one of the cavities of which is connected to one of the cavities of the hydraulic cylinder, and the second cavity of the dispenser is connected to a pressure source and a drain through a two-position valve, a hydraulically controlled pressure valve and a second two-position valve, characterized in that In order to simplify the design, it is equipped with two throttles, the second distributor is installed in the communication line of the dispenser with the hydraulic cylinder cavity, which is a working, drain The hydraulic cylinder cavity is connected to a drain through one of the throttles, one of the lines of the second distributor is connected to a pressure source, and the metering piston is made with a through channel that communicates the cavity of the dispenser to each other, in which the pressure valve is sequentially installed with an entrance to the cavity communicated with the hydraulic cylinder, and second choke.