Hydraulic lock assembly and bi-directional hydraulic lock having the hydraulic lock assembly described above
A technology of hydraulic locks and components, applied in the direction of fluid pressure actuating devices, etc., can solve the problems of hidden safety hazards, reduced service life, slow opening of the valve core, etc., and achieve the effect of improving safety, prolonging service life, and protecting the overall structure
Active Publication Date: 2016-03-02
ZHEJIANG STRONGER HYDRAULIC
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Problems solved by technology
Although the two-way hydraulic lock is set in the buffer mechanism, since the chamber between the spool and the plug is always connected with the pressure-holding chamber, the oil entering the oil inlet hole will continue to push the buffer spool to move, causing the buffer spool to move. The problem that the moving speed is too fast and the valve core opens slowly, there are potential safety hazards and the service life will be reduced
Method used
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[0028] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0029] Such as figure 1 , figure 2 As shown, a hydraulic lock assembly includes a hydraulic lock valve body 1, the valve body 1 has a cavity inside, the valve body 1 is provided with an oil inlet hole 11 and an oil outlet hole 12, and an annular protrusion is formed on the inner wall of the valve body 1. Along 13, there is a tapered surface on the annular convex edge 13, an outer valve core 2 is positioned in the valve body 1, and the end of the outer valve core 2 has a tapered surface, and the tapered surface can be connected with the tapered surface of the annular convex edge 13. The end of the outer valve core 2 forms an oil inlet chamber 4 with the valve body 1, and a through hole 22 communicating with the oil inlet ...
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The invention provides a hydraulic lock assembly and a bidirectional hydraulic lock comprising the same, belongs to the technical field of valves, and solves the problem of potential risks of an existing bidirectional hydraulic lock. The bidirectional hydraulic lock comprises two sets of hydraulic lock assemblies, each hydraulic lock assembly comprises a valve body in which an oil inlet and an oil outlet are formed, an outer valve core is arranged inside the valve body in a positioning mode, one end of the outer valve core forms an oil inlet chamber with the valve body and is provided with a through hole communicated with the oil inlet chamber, the other end of the outer valve core forms an oil storage chamber with the valve body, a pressure maintaining chamber is formed between the outer wall of the outer valve core and the inner wall of the valve body, an inner valve core is inserted into the outer valve core and is provided with an oil way, and a spring I is arranged between the inner valve core and the valve body; an oil passing hole is formed in the side wall of the outer valve core, and an oil through hole is formed in the side wall of the inner valve core. The hydraulic lock assembly can improves the safety during usage and prolong service life.
Description
technical field [0001] The invention belongs to the technical field of valves and relates to a hydraulic lock assembly. [0002] The invention also belongs to the technical field of machinery and relates to a two-way hydraulic lock. Background technique [0003] Two-way hydraulic locks are widely used in the oil circuit where the oil cylinders in engineering transportation, lifting and other machinery need to maintain pressure. Hanging), its working principle is that when one oil chamber enters oil in the forward direction, the other chamber outputs oil in the reverse direction, and vice versa, when the two chambers do not enter oil in the forward direction, the reverse direction will not work, and will not be disturbed by external loads. To the role of the lock. Usually, a two-way hydraulic lock is connected in series at the inlet and outlet of the actuator (oil cylinder, motor, etc.), so that the actuator can be maintained no matter where it stops. It generally adopts a...
Claims
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IPC IPC(8): F15B15/26
Inventor 罗学荣
Owner ZHEJIANG STRONGER HYDRAULIC