SU1495539A1 - Actuator of hydraulic system - Google Patents

Abstract

The invention can be used in hydraulic systems of automation under conditions of low m-p. The purpose of the invention is to improve the dynamic characteristics of the hydraulic system by eliminating the influence of external factors on the speed of movement of the servomotor pistons, as well as increasing the compactness of the hydraulic system. The hydraulic cylinder (HZ) 1 is filled with a constant amount of working fluid. The hollow piston 2 is a gear rack connected to the gear wheel 3 mounted on the output shaft. In the piston 2 there is a pump unit (ON) with electric drive 4 and solenoid valves (K) 6. In the piston 2 there are holes 7 for supplying or discharging the working fluid to HA. Last m. made in the form of a reversing pump 5. The first output ON is connected to the left cavity HZ 1 through a normally open K 6, the second output is connected to the right cavity HZ 1 through a normally closed K 6. The first input TO is connected to the left cavity through a normally closed K 6, the second the input is from the right cavity of HZ 1 through a normally open K 6. 2 CI f-ly, 1 ill.

Description

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The invention relates to hydraulic automation devices, in particular, operating in low temperature conditions.

The purpose of the invention is to improve the dynamic characteristics of the hydraulic system by eliminating the influence of external factors on the mixing speed of the servomotor pistons, as well as increasing the compactness of the hydraulic system.

The drawing shows a constructive diagram of the actuator of the hydraulic system.

The actuator consists of a cylinder housing 1, a hollow piston 2,

the right that causes the opening of the valves 6, forming a diagonal of the EMC 2, EMC 3. Turning off the power causes the piston 2 to stop). As a safety measure, limit switches can be introduced into the power supply circuit of the electric motor 4.

Claims (3)

1. An executive drive of a hydraulic system, comprising a hydraulic cylinder body, a piston with a toothed rack connected to a gear wheel, characterized in that, in order to improve the dynamic characteristics by means of a toothed rack connected to | 5 ticks and to increase the compactness of the system, the toothed wheel 3, fixed on you-piston is made hollow, and the hydraulic cylinder drive shaft (not shown). The piston 2 is filled with a constant number of workers; it includes an electric actuator 4, which drives the influx of liquid, in the hollow piston of which action pump 5 c system of electromag-placed pumping unit with electronic valves 6. In the case of the use of actuator and solenoid valves, reversing pump valves b are missing. 20 and the holes for the supply or the Hole 7 are used for the supply (removal) of the working fluid to the pumping working liquid to the pump 5. The actuator operates as follows. When supplied to the electric motor 4 of the power supply, corresponding to the movement of the piston 2 from right to left, the valves 6 are opened, which form the diagonal of the EMC 1 and the EMC 4. The pump 5 starts pumping25 vat working fluid from the left bandreate. 2. The actuator according to claim 1, characterized in that the first outlet of the pumping unit is connected to the left cavity of the hydraulic cylinder through a normally open solenoid valve, and the second outlet is connected to the right cavity of the hydraulic cylinder through a normally closed solenoid valve, the first input of the pumping unit These cylinders 1 are in the right, creating that AOR is connected to the left cavity of the hydraulic cylinders with a certain pressure drop in the cavities of the cylinder 1. Under the action of this differential, the piston 2 moves to the left. If it is necessary to change the direction of rotation of the output shaft, the electric motor 4 is supplied with power corresponding to the movement of the piston 2 from left to right, which causes the opening of the valves 6 forming the diagonal of EMC 2, EMC 3. Disconnecting the power causes the piston 2 to stop. power to the motor 4 can be entered limit switches. Invention Formula five regatta. 2. The actuator according to claim 1, characterized in that the first outlet of the pumping unit is connected to the left cavity of the hydraulic cylinder through a normally open solenoid valve, and the second outlet is connected to the right cavity of the hydraulic cylinder through a normally closed solenoid valve, the first input of the pumping unit Pa through a normally closed solenoid valve, and the second input of the pump unit is connected to the right cylinder cavity through a normally open solenoid valve. 3. The drive according to claim I, characterized in that the pump unit is designed as a reversible pump.