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Integrated electro-hydraulic actuator capable of being used for underwater operation

An electro-hydraulic actuator, a technology for underwater operation, applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, mechanical equipment, etc., can solve the problems of narrow application surface, loose structure, short and thick shape, etc. Impact, easy installation, compact effect

Pending Publication Date: 2019-02-19
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For the third problem, Chinese patent CN102003432A mentions an electro-hydraulic actuator, which uses a valve box assembly, and the control is realized by a controller, with a short and thick shape and a loose structure; Chinese patent CN207246278U mentions a motor direct drive clutch The electro-hydraulic control mechanism is composed of mechanical components and electric control components, but its application is narrow, especially not suitable for closed-loop control of single-acting cylinders

Method used

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  • Integrated electro-hydraulic actuator capable of being used for underwater operation
  • Integrated electro-hydraulic actuator capable of being used for underwater operation
  • Integrated electro-hydraulic actuator capable of being used for underwater operation

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Embodiment Construction

[0025] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0028] figure 1 It is a structural schematic di...

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Abstract

The invention provides an integrated electro-hydraulic actuator capable of being used for underwater operation, and relates to the technical field of electro-hydraulic actuators. The integrated electro-hydraulic actuator is resistant to corrosion and seawater pollution, and is a closed loop electro-hydraulic actuator with simple structure and reliable operation. The electro-hydraulic actuator comprises a first cylinder block and a second cylinder block which are connected in a sealed mode; a piston device is arranged in the first cylinder block; a motor, a two-way oil pump and an oil tank arearranged in the second cylinder block; the two-way oil pump, a rod cavity of the first cylinder block, a rodless cavity of the first cylinder block and the oil tank form an oil circulation pipeline; and the outer periphery of the outwards-protruding part of the piston device is provided with a telescopic isolation bag. The technical scheme provided by the invention is suitable for underwater operation processes of the electro-hydraulic actuator.

Description

【Technical field】 [0001] The invention relates to the technical field of electro-hydraulic actuators, in particular to an integrated electro-hydraulic actuator that can be used for underwater operations. 【Background technique】 [0002] The deep-sea working environment has the characteristics of low temperature, high pressure, easy corrosion, and rich in microorganisms. When the electro-hydraulic actuator system works in the deep-sea environment, three problems are prone to occur. First, due to the high environmental pressure in the deep sea, it is easy to cause seal failure, seawater and microorganisms enter the hydraulic system, contaminate the hydraulic oil, and cause serious consequences; second, because the piston rod must extend out of the hydraulic cylinder when it is working, the outer surface is exposed to seawater. It is easy to be corroded; the third is that the ordinary electro-hydraulic actuator system is an open structure, and the hydraulic valve controls the ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20F15B21/08
CPCF15B15/1423F15B15/1461F15B15/20F15B21/087F15B2015/206
Inventor 杨耀东王增辉
Owner UNIV OF SCI & TECH BEIJING
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