CN103851016A - Hydraulic-cylinder annular-space buffer - Google Patents
Hydraulic-cylinder annular-space buffer Download PDFInfo
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- CN103851016A CN103851016A CN201210509796.4A CN201210509796A CN103851016A CN 103851016 A CN103851016 A CN 103851016A CN 201210509796 A CN201210509796 A CN 201210509796A CN 103851016 A CN103851016 A CN 103851016A
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- buffer
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Abstract
The invention relates to a hydraulic-cylinder annular-space buffer comprising a hydraulic cylinder, a piston and a cylinder cover. The cylinder cover is fixedly connected with the hydraulic cylinder. The piston is fixedly connected with a plunger. The hydraulic-cylinder annular-space buffer is characterized in that the cylinder cover is provided with a cylindrical cavity and a throttling hole; the throttling hole is communicated with the cavity; a buffer block is connected with the side wall of the piston; the outer wall of the buffer block is in the shape of a recessed arc; the diameter of the inner end of the buffer block is smaller than the inner diameter of the cavity, and the diameter of the outer end of the buffer block is smaller than the diameter of the inner end. Compared with conventional hydraulic-cylinder annular-space throttling buffers, the hydraulic-cylinder annular-space buffer utilizing the arc to buffer an annular space has the advantages of simple structure, good buffer effect, small hydraulic shock and stable operation.
Description
Technical field
The present invention relates to hydraulic equipment field, particularly the buffer of oil hydraulic cylinder.
Background technique
Oil hydraulic cylinder, in the time doing high-speed motion to stroke terminal, tends to occur violent mechanical collision.In addition, the motion of piston cut also usually can cause the water hammer of pipeline, thereby produces very large impact and noise.The generation of above mechanical shock, not only affects the service behaviour of machinery, and can damage other elements of oil hydraulic cylinder and hydraulic system, has very large danger.In oil hydraulic cylinder inside, damping device is set for preventing or alleviating this impact shock, can plays to a certain extent buffer function.The general damping device adopting is ring gap flow restricted buffer, and the shortcoming of traditional ring gap flow restricted buffer is that cushioning effect is not good, and hydraulic shock is large etc.
Summary of the invention
The applicant, for the above-mentioned shortcoming of traditional hydraulic pressure ring gap flow restricted buffer, studies and improves, and a kind of oil hydraulic cylinder annular space buffer is provided, and it has simple in structure, good buffer effect, the feature that hydraulic shock is little.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
A kind of oil hydraulic cylinder annular space buffer, comprise oil hydraulic cylinder, piston and the cylinder cap being fixedly connected with oil hydraulic cylinder, piston is fixedly connected with plunger, it is characterized in that: described cylinder cap has cylindrical cavity and throttle orifice, and described throttle orifice is communicated with described cavity, the sidewall of described piston connects buffer stopper, the outer wall of described buffer stopper is imploded arcs shape, and the inner end diameter of buffer stopper is less than described cavity internal diameter, and the outer end diameter of buffer stopper is less than described inner diameter.
Technique effect of the present invention is:
The oil hydraulic cylinder ring gap flow restricted buffer that the present invention is more traditional, adopts arc buffering annular space, and it has advantages of simple in structure, good buffer effect, hydraulic shock is little and operate steadily.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is another structural representation of the present invention.
Embodiment
See Fig. 1, Fig. 2, the present invention includes oil hydraulic cylinder 2, piston 3 and the cylinder cap 5 being fixedly connected with oil hydraulic cylinder 2, piston 3 is fixedly connected with plunger 1, cylinder cap 5 has cylindrical cavity 6 and throttle orifice 7, and throttle orifice 7 is communicated with cavity 6, and the sidewall of piston 3 connects buffer stopper 4, the outer wall of buffer stopper 4 is imploded arcs shape, the inner 40 diameters of buffer stopper 4 are less than cavity internal diameter, and outer end 41 diameters of buffer stopper 4 are less than inner 40 diameters, form arc annular space 8 between the outer wall of buffer stopper 4 and cavity 6.
When the present invention works, in the time that plunger 1 moves to cylinder cap 5 with piston 3, buffer stopper 4 enters cylindrical cavity 6, cavity 6 forms buffering oil pocket, the fluid being closed can only flow out from arc annular space 8 and throttle orifice 7, has therefore slowed down the motion speed of piston 3, has reached the object of slowing down, fluid in simultaneous buffering oil pocket is pressed in producing, and realizes buffering to resist the effect of inertial force and other external force.Wherein arc shape annular space 8 makes piston 3 be uniformly retarded motion, thereby it is steady to make to impact cavity pressure, has effectively improved the stability that piston 3 moves.
Claims (1)
1. an oil hydraulic cylinder annular space buffer, comprise oil hydraulic cylinder, piston and the cylinder cap being fixedly connected with oil hydraulic cylinder, piston is fixedly connected with plunger, it is characterized in that: described cylinder cap has cylindrical cavity and throttle orifice, and described throttle orifice is communicated with described cavity, the sidewall of described piston connects buffer stopper, the outer wall of described buffer stopper is imploded arcs shape, and the inner end diameter of buffer stopper is less than described cavity internal diameter, and the outer end diameter of buffer stopper is less than described inner diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509796.4A CN103851016A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder annular-space buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509796.4A CN103851016A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder annular-space buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103851016A true CN103851016A (en) | 2014-06-11 |
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ID=50859043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210509796.4A Pending CN103851016A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder annular-space buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851016A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067786A (en) * | 2019-03-28 | 2019-07-30 | 河海大学常州校区 | A kind of built-in buffer unit |
-
2012
- 2012-11-30 CN CN201210509796.4A patent/CN103851016A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067786A (en) * | 2019-03-28 | 2019-07-30 | 河海大学常州校区 | A kind of built-in buffer unit |
| CN110067786B (en) * | 2019-03-28 | 2020-09-22 | 河海大学常州校区 | Built-in buffer device |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |