CN103851019A - Hydraulic-cylinder annular-space buffer - Google Patents
Hydraulic-cylinder annular-space buffer Download PDFInfo
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- CN103851019A CN103851019A CN201210509799.8A CN201210509799A CN103851019A CN 103851019 A CN103851019 A CN 103851019A CN 201210509799 A CN201210509799 A CN 201210509799A CN 103851019 A CN103851019 A CN 103851019A
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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; the plunger penetrates the piston; the plunger on the right side of the piston is of a circular truncated cone; the diameter of the circular truncated cone decreases gradually; the diameter of the inner end of the circular truncated cone is smaller than the diameter of the cylindrical cavity. Compared with conventional hydraulic-cylinder annular-space throttling buffers, the hydraulic-cylinder annular-space buffer 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, described plunger is through described piston, the right side plunger portion of described piston is divided into frustoconic shape structure, and the diameter of described round platform reduces gradually, and the inner diameter of described round platform is less than described cylindrical cavity diameter.
Technique effect of the present invention is:
The oil hydraulic cylinder ring gap flow restricted buffer that the present invention is more traditional, has advantages of simple in structure, good buffer effect, hydraulic shock is little and operate steadily.
Accompanying drawing explanation
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 4 being fixedly connected with oil hydraulic cylinder 2, piston 3 is fixedly connected with plunger 1, cylinder cap 4 has cylindrical cavity 5 and throttle orifice 6, throttle orifice 6 is communicated with cavity 5, and plunger 1 is through piston 3, and right side plunger 8 parts of piston 3 are frustoconic shape structure, because its end diameter is less than the diameter of cylindrical cavity 5, between frustoconic shape plunger 8 ends and cavity 5, form expansion shape annular space 7.
When the present invention works, in the time that plunger 1 moves to cylinder cap 4 with piston 3, the right part of plunger 1 enters after cylindrical cavity 5, between cylinder cap 4 and piston 3, form buffering oil pocket, the fluid being closed can only flow out from expansion shape annular space 7 and throttle orifice 6, therefore slowed down the motion speed of piston 3, reach the object of slowing down, fluid in simultaneous buffering oil pocket is pressed in producing, realize buffering with the effect of opposing inertial force and other external force, wherein expand shape annular space 7 and reduced acceleration, the speed of piston 3 is reduced gradually, therefore improved the stability of piston movement.
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, described plunger is through described piston, the right side plunger portion of described piston is divided into frustoconic shape structure, and the diameter of described round platform reduces gradually, and the inner diameter of described round platform is less than described cylindrical cavity diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509799.8A CN103851019A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder annular-space buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509799.8A CN103851019A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder annular-space buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103851019A true CN103851019A (en) | 2014-06-11 |
Family
ID=50859046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210509799.8A Pending CN103851019A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder annular-space buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851019A (en) |
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2012
- 2012-11-30 CN CN201210509799.8A patent/CN103851019A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |