Two-way speed regulating valve based on active control of volume variable pressure difference

Abstract

The invention provides a two-way speed regulating valve based on active control of volume variable pressure difference. An oil outlet of a hydraulic pump is connected with an oil inlet of an overflowvalve; an oil outlet of the overflow valve is connected with an oil tank; the oil outlet of the hydraulic pump is connected with an oil inlet p of a reversing valve; an oil return port T of the reversing valve is connected with the oil tank; an oil outlet A of the reversing valve is connected with an oil inlet of a hydraulic motor; an oil outlet of the hydraulic motor is connected with an oil inlet of a throttle valve; an oil outlet of the throttle valve is connected with an oil inlet of an actuator; an oil outlet of the actuator is connected with an oil outlet B of the reversing valve; a first pressure sensor is connected with the oil outlet of the throttle valve; a second pressure sensor is connected with the oil inlet of the throttle valve; a battery is connected with a current output end of a motor controller; a torque input end of the motor controller is connected with a generator; and the generator is coaxially connected with the hydraulic motor.

Description

technical field [0001] The invention relates to an electro-hydraulic control technology and a two-way cartridge valve, in particular to a two-way speed regulating valve actively controlled based on volumetric variable pressure difference. Background technique [0002] Hydraulic transmission is widely used in various industrial fields due to its advantages of high power density and easy linear motion, but its biggest shortcoming is low efficiency. Taking the valve-controlled hydraulic excavator as an example, according to the research report, the energy utilization rate of the hydraulic excavator is only about 20%, and the efficiency of the hydraulic system is about 30%, so the research on energy-saving technology of the hydraulic system is very important. [0003] There are many types of hydraulic systems, but the energy consumption of different hydraulic systems is basically reflected in throttling loss and overflow loss. Among them, throttling loss is mainly divided into ...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the deficiencies existing in the prior art, and its main purpose is to provide a two-way speed regulating valve based on the active control of volume variable pressure difference, which can realize the active control of variable pressure difference at both ends of the throttle valve port in the two-way speed regulating valve. Control, effectively solve the throttling loss that leads to low efficiency of the hydraulic system, convert the hydraulic energy traditionally lost at the throttle valve port into electrical energy storage and utilization, and improve the efficiency of the hydraulic system

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