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Straight stroke spring return hydraulic actuator

A technology of spring return and actuator, which is applied in the direction of engine components, mechanical equipment, fluid pressure actuators, etc., can solve the problems of single action principle, low integration, few spring return structures, etc., to achieve convenient use and slow down the decline The effect of speed, ease of installation and maintenance

Active Publication Date: 2018-07-17
成都赛来科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few types of products developed by hydraulic actuators at home and abroad. The products that have been put into the market are mainly simple hydraulic cylinders and hydraulic oil stations. The defects are as follows: the action principle is relatively simple, and few of them meet special requirements. The spring return structure required by the application requirements; filter online switching, pipeline flushing bypass, safety bypass and other functions; low integration

Method used

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  • Straight stroke spring return hydraulic actuator
  • Straight stroke spring return hydraulic actuator
  • Straight stroke spring return hydraulic actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1 to Figure 9 As shown, the straight stroke spring return hydraulic actuator of the present invention includes a main oil circuit block 1, in which an oil cylinder 2 is arranged, and a corresponding oil cylinder upper cylinder head 6 and an oil cylinder lower cylinder head are matched. 5. A piston 4 is fitted in the oil cylinder 2, and the piston rod 3 of the piston 4 protrudes from the lower cylinder head 5 of the oil cylinder and the main oil circuit block 1; connected oil circuit, and is matched with corresponding plug; the piston seal 27 and the piston guide ring 29 are arranged at the joint between the piston 4 and the oil cylinder 2; A shaft seal 26 and a shaft guide ring 25; the upper cylinder head 6 of the oil cylinder is provided with a reset mechanism that cooperates with the piston 4 . The linear stroke spring return hydraulic actuator of the present invention, through the cooperation of the main oil circuit block 1, the piston 4, the oil cyl...

Embodiment 2

[0031] As preferred on the basis of the above-mentioned embodiments, the reset mechanism includes a housing 50, a spring seat 51, a spring 52 and a spring shaft 53, and the housing 50 is installed on the right end of the upper cylinder head 6 of the oil cylinder. One end of the spring shaft 53 is slidingly fitted with the outer end of the housing 50, and the other end is in contact with the piston 4 after passing through the upper cylinder head 6 of the oil cylinder and is slidably fitted with the upper cylinder head 6 of the oil cylinder; the spring seat 51 is fixedly mounted on the spring shaft 53 and close to the left end of the housing 50 , the spring 52 is sleeved on the spring shaft 53 and is located between the spring seat 51 and the right end of the housing 50 . A spring shaft 53 and a spring seat 51 are provided, which improves the speed and accuracy of the spring 52 returning.

Embodiment 3

[0033] As preferably, the spring shaft 53 is provided with a shaft seal 26 and a shaft guide ring 25 where the spring shaft 53 cooperates with the upper cylinder head 6 of the oil cylinder, and the right end of the upper cylinder head 6 of the oil cylinder is provided with an anti-corrosion ring that cooperates with the spring shaft 53 The dust ring 28 not only improves the sealing performance, but also facilitates reset and improves the speed and accuracy of reset.

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Abstract

The invention discloses a hydraulic reset actuator adopting a linear motion spring. The hydraulic reset actuator has characteristics that reset is quick and convenient and the structure is simple. The hydraulic reset actuator comprises a main manifold block, wherein an oil cylinder is arranged in the main manifold block and is matched with a corresponding upper oil cylinder cover and lower oil cylinder cover; a piston is arranged in the oil cylinder in a matched manner, and a piston rod of the piston extends out of the lower oil cylinder cover and the main manifold block; oil passages communicated with the outside and the oil cylinder respectively are arranged on the main manifold block and are matched with corresponding plugs; a piston seal and a piston guide ring are arranged in a matched position of the piston and the oil cylinder, and a shaft seal and a shaft guide ring are matched between the piston rod and the lower oil cylinder cover; a reset mechanism matched with the piston is arranged on the upper oil cylinder cover. According to the hydraulic reset actuator adopting the linear motion spring, through the matching of the main manifold block, the piston, the oil cylinder, the reset mechanism and the like, an actuator component connected with the reset mechanism can be conveniently and rapidly reset, and the hydraulic reset actuator has the characteristic of simple structure.

Description

technical field [0001] The invention relates to a reset mechanical structure, in particular to a linear stroke spring reset hydraulic actuator with simple structure and fast reset function. Background technique [0002] In petroleum, chemical industry, electric power and other industries, industrial control control valves are widely used. With the development of technology and progress of technology, higher requirements are put forward for the control accuracy of control valves. This product can be widely used in various types of straight-stroke control valves. Its control accuracy within 0.1% and sensitivity of 0.05% can fully meet the control requirements of control valves in special applications. At present, this product has been applied to the inlet guide vanes of large axial flow fans and the air intake adjustment of steam turbines, realizing precise positioning and rapid adjustment. In addition, this product has also been effectively applied on the oil pipelines of Pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/122F15B15/14F15B15/22
CPCF15B15/14F15B15/22F16K31/122
Inventor 曾静
Owner 成都赛来科技有限公司
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