An elastic push rod structure
A push rod and elastic technology, applied in the direction of mechanical equipment, fluid pressure actuators, etc., can solve the problems of mismatching upper and lower strokes, large rigid output impact force, etc., and achieve the effect of effective work
Active Publication Date: 2019-11-15
XIAN AERO ENGINE CONTROLS
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Problems solved by technology
[0004] Due to the fast moving speed of the piston, the existing rigid output often has the problem of large impact force; at the same time, it will cause the problem of mismatching of the stroke of the upper and lower stages
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Embodiment Construction
[0016] The present invention provides an elastic push rod structure, including a housing 1, a piston 2, a first spring 3, a second spring 4 and a push rod 5; the piston, the first spring, the second spring and the push rod are all installed in the housing In the cavity, the inner cavity of the housing is the piston cavity; the first spring is arranged between the piston and the push rod, so that an elastic thrust is formed between the piston and the push rod; the second spring is arranged between the housing and the piston, providing elastic recovery for the piston Force; there is a limit position of the piston in the inner cavity of the housing. When the piston reaches the limit position, the push rod can continue to slide relative to the piston; the piston is a cylindrical structure, and the first spring is arranged on the cylinder Between the bottom of the type structure and one end of the push rod, one end of the push rod is slidingly fitted with the inner wall of the cylin...
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The invention relates to an elastic push rod structure. The elastic push rod structure comprises a casing, a piston, a first spring, a second spring and a push rod, wherein the piston, the first spring, the second spring and the push rod are mounted in an inner cavity of the casing; the inner cavity of the casing is a piston cavity; the first spring is arranged between the piston and the push rod,so that elastic push force is formed between the piston and the push rod; the second spring is arranged between the casing and the piston to provide elastic restoring force for the piston; a piston limiting position is arranged in the inner cavity of the casing, and when the piston reaches to the limiting position, the push rod can continuously slide relative to the piston. General rigid transmission of piston displacement is converted into flexible transmission of the push rod structure provided with a damping element, and the function of buffering impact force can be realized; besides, by means of the compressible range of a damping cavity, a system can effectively work under the condition of larger difference between upper and lower travels.
Description
technical field [0001] The invention relates to the field of valve components, in particular to an elastic push rod structure, which is mainly used for the transmission of piston displacement. In mechanical hydraulic devices, it is usually necessary to transmit the displacement of some pistons to lower-level devices to complete specific functions. Background technique [0002] In mechanical hydraulic devices, the displacement of the piston is usually used for controller calculations or to push lower-level devices. The former can be realized by a displacement sensor; the latter often uses a rigid output to directly transmit the displacement of the piston to the lower device. Contents of the invention [0003] purpose of the invention [0004] Due to the fast moving speed of the piston, the existing rigid output often has the problem of large impact force; at the same time, it will cause the problem of mismatching strokes of the upper and lower stages. The present inventi...
Claims
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IPC IPC(8): F15B15/22
CPCF15B15/226F15B2215/30
Inventor 张聪丁燕廖盛祝孙柏超张婷李柯柯
Owner XIAN AERO ENGINE CONTROLS