Top-pull-type hydraulic buffer
A hydraulic buffer, top-pull technology, applied in the direction of liquid shock absorber, etc., can solve the problems of poor sealing effect and penetration of the speed stabilizer, achieve the effects of reducing the occupied space, improving the buffer stroke, and stable and reliable working performance
Inactive Publication Date: 2014-12-03
杨金刚
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Problems solved by technology
However, in the actual application process, the sealing effect of the speed stabilizer is poor. After a period of application, the oil penetrates to a certain extent from the position where the piston rod and the upper end cover are matched.
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Embodiment 1
[0019] figure 1 It is a schematic cross-sectional structure diagram of the present invention, showing the first specific implementation mode of the present invention.
[0020] This embodiment is a top-pull hydraulic shock absorber, which includes a cylinder body 1, a front plug 2 arranged at one end of the cylinder body 1, a rear plug 3 arranged at the other end of the cylinder body 1, and can reciprocate in the cylinder body 1. The moving piston 4, the piston rod assembly 5 fixed on the piston 4, and the return spring 6 and the pressure regulating rod 7 sleeved on the piston rod assembly 5 and abutting on the rear plug 3 and the piston 4; The cavity in the body 1 sandwiched by the front plug 2 and the rear plug 3 is used as an oil storage chamber 11, which is filled with hydraulic oil; the center of the front plug 2 and the rear plug 3 are provided with sliding holes ; The piston 4 is set between the front plug 2 and the rear plug 3 .
[0021] The middle end of the piston r...
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The invention discloses a top-pull-type hydraulic buffer comprising a cylinder body, a front choke plug, a back choke plug, a piston, a piston rod assembly, a resetting spring and a pressure adjusting rod, wherein slide holes are arranged at the centers of the front choke plug and the back choke plug; the piston is arranged between the front choke plug and the back choke plug; the middle end of the piston rod assembly is fixed on the piston and the front and back ends of the piston rod assembly can respectively slide in the slide holes of the front choke plug and the back choke plug; the piston is provided with reflowing holes outside a slide rod and each reflowing hole is provided with a one-way valve; the center of the back end of the piston rod assembly is provided with a pressure adjusting hole; the piston rod assembly is provided with a buffering oil inlet and a buffering oil outlet which are communicated with the pressure adjusting hole; the hole cavity of the pressure adjusting hole is provided with a conical pressure adjusting cavity; the rod body of the pressure adjusting rod is arranged on a conical pressure adjusting part and the pressure adjusting part is located in the pressure adjusting cavity; and the pressure adjusting part can move back and forth in the pressure adjusting hole along the pressure adjusting rod, and a gap between the outer wall of the pressure adjusting part and the inner wall of the pressure adjusting cavity is changed in the movement process. The top-pull-type hydraulic buffer has the advantages of more reasonable structure and more stable reliable work performance.
Description
technical field [0001] The invention belongs to the technical field of buffer devices, and in particular relates to a top-pull hydraulic buffer. Background technique [0002] The top-pull hydraulic buffer is used in various mechanisms or equipment that require one-step processing, one-step feed and stable speed forward work such as automatic drilling machines, lathe processing, and milling machine processing. [0003] At present, the biggest problem in the application of the top-pull hydraulic buffer is the problem of short service life. Due to its high reciprocating frequency and fast wear of parts, the general top-pull hydraulic buffer is used for less than one year. There will be oil leakage, which seriously affects the service life of the top-pull hydraulic buffer. [0004] In order to solve the above problems, Chinese patent CN201696294U discloses a speed stabilizer, which includes a mandrel and an outer tube. There is an inner tube, the end of the mandrel close to th...
Claims
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IPC IPC(8): F16F9/16
Inventor 施亨庆
Owner 杨金刚