CN103851015A - Hydraulic-cylinder buffer - Google Patents
Hydraulic-cylinder buffer Download PDFInfo
- Publication number
- CN103851015A CN103851015A CN201210509785.6A CN201210509785A CN103851015A CN 103851015 A CN103851015 A CN 103851015A CN 201210509785 A CN201210509785 A CN 201210509785A CN 103851015 A CN103851015 A CN 103851015A
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- runner
- cylinder
- buffer
- piston
- hydraulic
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- Fluid-Damping Devices (AREA)
Abstract
The invention relates to a hydraulic-cylinder 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 piston rod. The hydraulic-cylinder buffer is characterized in that the piston is connected with a columnar buffer block; the cylinder cover is provided with a cylindrical cavity, a throttling hole and a corner runner; the outer diameter of the buffer block is slightly smaller than the inner diameter of the cavity; the throttling hole is communicated with the cavity; the corner runner comprises a first runner and a second runner, and the first runner and the second runner are positioned on two sides of the throttling hole respectively and are communicated with the throttling hole; a needle valve arranged at the corner of the first runner is connected with the cylinder cover. Compared with conventional hydraulic-cylinder annular-space throttling buffers, the hydraulic-cylinder 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 hydraulic cylinder 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 hydraulic cylinder buffer, comprise oil hydraulic cylinder, piston and the cylinder cap being fixedly connected with oil hydraulic cylinder, piston is fixedly connected with piston rod, it is characterized in that: described piston connects cylindricality buffer stopper, described cylinder cap has cylindrical cavity, throttle orifice and corner runner, the external diameter of described buffer stopper is slightly less than the internal diameter of described cavity, described throttle orifice is communicated with described cavity, described corner runner comprises point first flow that occupy described throttle orifice both sides and second runner, described first flow is communicated with described throttle orifice with the second runner, the corner of described first flow arranges needle-valve, described needle-valve is connected with described cylinder cap.
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.
Embodiment
See Fig. 1, 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 piston rod 1, it is characterized in that: described piston 3 connects cylindricality buffer stopper 4, described cylinder cap 5 has cylindrical cavity 9, throttle orifice 7, the first corner runner 8 and the second corner runner 10, the external diameter of described buffer stopper 4 is slightly less than the internal diameter of described cavity 9, described throttle orifice 7 is communicated with described cavity 9, the live apart both sides of throttle orifice 7 of described first flow 8 and the second runner 10, described first flow 8 and the second runner 10 respectively described throttle orifice 7 are communicated with, the corner of described first flow 8 arranges needle-valve 6, described needle-valve 6 is connected with described cylinder cap 5, needle-valve 6 is for regulating the restriction effect of first flow 8.
When the present invention works, in the time that piston rod 1 moves to cylinder cap 5 with piston 3, buffer stopper 4 enters after cylindrical cavity 5, between cavity 5 and piston 3, form buffering oil pocket, the fluid being closed can only flow out from first flow 8, the second runner 10 and throttle orifice 7, 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 needle-valve 6 is for regulating the orifice size of first flow 8, to adjust cushioning effect.
Claims (1)
1. a hydraulic cylinder buffer, comprise oil hydraulic cylinder, piston and the cylinder cap being fixedly connected with oil hydraulic cylinder, piston is fixedly connected with piston rod, it is characterized in that: described piston connects cylindricality buffer stopper, described cylinder cap has cylindrical cavity, throttle orifice and corner runner, the external diameter of described buffer stopper is slightly less than the internal diameter of described cavity, described throttle orifice is communicated with described cavity, described corner runner comprises point first flow that occupy described throttle orifice both sides and second runner, described first flow is communicated with described throttle orifice with the second runner, the corner of described first flow arranges needle-valve, described needle-valve is connected with described cylinder cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509785.6A CN103851015A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509785.6A CN103851015A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103851015A true CN103851015A (en) | 2014-06-11 |
Family
ID=50859042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210509785.6A Pending CN103851015A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851015A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847731A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Oil cylinder and engineering machinery with same |
-
2012
- 2012-11-30 CN CN201210509785.6A patent/CN103851015A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847731A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Oil cylinder and engineering machinery with same |
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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 |