A cabin integrated electro-hydraulic servo mechanism

Abstract

The invention discloses an integrated electro-hydraulic servo mechanism for a cabin. The servo mechanism is composed of a body, a motor pump combination, a hydraulic assembly, a mechanical transmission mechanism and a control mechanism, wherein the motor pump combination, the hydraulic assembly, the mechanical transmission mechanism and the control mechanism are integrally installed on the body. After being powered on, a motor drives a constant-pressure variable pump to rotate so as to enable electric energy to be converted into hydraulic energy; the hydraulic assembly is mainly composed of an oil tank, a pressurization component, a check valve, a high-pressure safety valve, a low-pressure safety valve, a filing valve, a high-pressure oil filter, a low-pressure oil filter, a hydraulic cylinder, an energy accumulator, an electro-hydraulic servo valve and the like; the mechanical transmission mechanism comprises a piston connecting rod, an actuating cylinder, a rocker, a connecting rod mechanism, a locking mechanism and the like; the control mechanism comprises a plug, a socket, a linear displacement sensor used for detecting the position of a piston rod in the actuating cylinder and a control circuit board for achieving closed loop of a system. The servo mechanism has the advantages of being high in power-to-volume ratio and power-to-weight ratio, rapid in response, high in rigidity, high in control accuracy and the like.

Description

technical field [0001] The invention belongs to the field of electromechanical equipment, and in particular relates to a cabin-integrated electro-hydraulic servo mechanism. Background technique [0002] Servo mechanisms are widely used in machinery manufacturing and military fields, and are generally used to provide power output. At present, the common servo mechanisms mainly include three categories: pneumatic servo mechanisms, electric servo mechanisms, and electro-hydraulic servo mechanisms. They each have the following characteristics: [0003] Pneumatic servos are powered by compressed air, which transfers energy to the actuator, thereby providing power delivery. Its structure is relatively simple, its cost is low, and its anti-pollution ability is strong. However, due to the compressibility of gas, the output torque of the system is small, its dynamic response is slow, and its stiffness is low. The electric servomechanism uses electric power as energy, and transmits...

AI Technical Summary

Problems solved by technology

However, due to the low stiffness, it cannot meet the requirements in some military applications; the electro-hydraulic servo mechanism uses hydraulic oil as the working medium, and the flow and direction of the output oil are changed through the electro-hydraulic servo valve to provide power transmission.

It has the advantages of high load rigidity, wide system frequency band, and fast response. At the same time, it also has problems such as high processing accuracy, sensitivity to oil pollution, and easy oil leakage.

With the development of electro-hydraulic servo technology, new technologies and methods are generally adopted to gradually improve the shortcomings of electro-hydraulic servo mechanisms, but the problems of large volume and low integration still exist

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