Lever feedback electrohydraulic servo mechanism

An electro-hydraulic servo and feedback technology, which is applied in the field of servo mechanisms, can solve the problems of poor stability, poor reliability, and low oil interference resistance of electro-hydraulic servo valves, and achieve high work safety, high positioning accuracy, and oil resistance. The effect of strong pollution ability

Inactive Publication Date: 2011-03-23
SHENYANG NORTHEAST ELECTRIC POWER CONTROL
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AI Technical Summary

Problems solved by technology

[0002] Electronic feedback electro-hydraulic servo mechanism, which is composed of electro-hydraulic servo valve, oil cylinder, electronic feedback device and filter screen, is susceptible to external electrical signal interference, zero drift, and poor positioning accuracy; relatively low control accuracy and relatively poor stability , The electro-hydraulic servo valve has low oil interference resistance, high failure rate and poor reliability

Method used

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  • Lever feedback electrohydraulic servo mechanism
  • Lever feedback electrohydraulic servo mechanism

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Embodiment Construction

[0009] It has electro-hydraulic actuator 1, lever 3, cylinder 4 and throttle 6. One end of the lever 3 is hinged A with the output shaft 2 of the electro-hydraulic actuator 1, the other end of the lever is connected B with the cylinder piston rod 7 through a sliding hinge 13, the lever is hinged C with the control connecting rod 8 through a hinge, and the hinge point C is located at the hinge point Between A and B, the specific position of the hinge point C depends on the ratio of the maximum stroke of the cylinder piston rod 7 to the maximum output displacement of the electro-hydraulic actuator 1. In this embodiment, the maximum stroke of the cylinder piston rod 7 is greater than that of the electro-hydraulic actuator 1 The maximum output displacement, so the hinge point C is closer to the hinge point A, the control link 8 is connected to the upper part of the wrong throttle slide valve 5, the lower end of the wrong throttle slide valve is subjected to the upward force of the ...

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Abstract

The invention provides a lever feedback electrohydraulic servo mechanism for solving the problems of an electronic feedback electrohydraulic servo mechanism such as zero drift, poor positioning accuracy, weak capacity of resisting oil interference of an electrohydraulic servo valve, higher failure rate and poor reliability. The key points of the lever feedback electrohydraulic servo mechanism are as follows: the lever feedback mechanism is employed, an electrohydraulic actuator is taken as a conversion device, and a slide-valve pilot valve controlled by a mechanical force and an oil cylinder form the lever feedback electrohydraulic servo mechanism. The lever feedback electrohydraulic servo mechanism has the beneficial effects of high positioning accuracy, high stability, strong capacity of resisting oil pollution, high operating safety and high operating reliability. The lever feedback electrohydraulic servo mechanism can be applied to an electrohydraulic control system instead of the electronic feedback electrohydraulic servo mechanism for driving various controlled objects.

Description

technical field [0001] The invention relates to a servo mechanism, specifically an electro-hydraulic servo mechanism. Background technique [0002] Electronic feedback electro-hydraulic servo mechanism, which is composed of electro-hydraulic servo valve, oil cylinder, electronic feedback device and filter screen, is susceptible to external electrical signal interference, zero drift, and poor positioning accuracy; relatively low control accuracy and relatively poor stability , The electro-hydraulic servo valve has low oil interference resistance, high failure rate and poor reliability. Contents of the invention [0003] In order to solve the above technical problems, the object of the present invention is to provide a lever feedback electro-hydraulic servo mechanism. [0004] The purpose of the present invention is achieved in this way: it has an oil cylinder, which is characterized in that it also has an electro-hydraulic actuator, a throttle and a lever, one end of the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/16
Inventor 刘宝军郑学明房德明张兴政马仁库葛春光范志强徐进善
Owner SHENYANG NORTHEAST ELECTRIC POWER CONTROL
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