CN103851025A - Groove buffer of hydraulic cylinder - Google Patents
Groove buffer of hydraulic cylinder Download PDFInfo
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- CN103851025A CN103851025A CN201210509933.4A CN201210509933A CN103851025A CN 103851025 A CN103851025 A CN 103851025A CN 201210509933 A CN201210509933 A CN 201210509933A CN 103851025 A CN103851025 A CN 103851025A
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- buffer
- hydraulic cylinder
- groove
- piston
- fixedly connected
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Abstract
The invention relates to a groove buffer of a hydraulic cylinder. The groove buffer of the hydraulic cylinder comprises a hydraulic cylinder, a piston and a cylinder cover fixedly connected to the hydraulic cylinder, the piston is fixedly connected to a plunger, wherein the cylinder cover comprises a cylindrical cavity and a throttle orifice, the throttle orifice is communicated with the cavity, the piston is fixedly connected to a cylindrical buffer block; the outside diameter of the cylindrical buffer block is slightly smaller than the inside diameter of the cavity; the outer wall of the buffer block comprises an arc groove of which the cross section is trapezoidal, and the depth of the groove is gradually increased towards the end part of the buffer block. Compared with the traditional throttle buffer of the hydraulic cylinder, the groove buffer of the hydraulic cylinder, disclosed by the invention, adopts the groove with an arc trapezoidal cross section to buffer, and has the advantages of simple structure, good buffer effect, small hydraulic impact and stable running.
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 groove 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 groove 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 piston is fixedly connected with cylindricality buffer stopper, the external diameter of described cylindricality buffer stopper is slightly less than described cavity internal diameter, and it is trapezoidal arcuate furrow that the outer wall of described buffer stopper has cross section, and the degree of depth of described groove increases gradually to the end of buffer stopper.
Technique effect of the present invention is:
The oil hydraulic cylinder throttling buffer that the present invention is more traditional, adopts the groove of arc shape trapezoid cross section to cushion, and it 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 the sectional structure chart of Fig. 1.
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, throttle orifice 7 is communicated with cavity 6, and piston 3 is fixedly connected with cylindricality buffer stopper 4, and the external diameter of cylindricality buffer stopper 4 is slightly less than cavity 6 internal diameters, it is trapezoidal arcuate furrow 40 that the outer wall of buffer stopper 4 has cross section, and the degree of depth of groove 40 increases gradually to the end of buffer stopper 4.
When the present invention works, in the time that plunger 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 groove 40 and throttle orifice 7 in flow out, 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 trapezoid cross section groove 40 is arc shape, make the sectional area size of groove 40 be the variation of certain rule, reach the effect of even deceleration, therefore make the speed of piston 3 reduce gradually, improve the stability that piston 3 moves.
Claims (1)
1. an oil hydraulic cylinder groove 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 piston is fixedly connected with cylindricality buffer stopper, the external diameter of described cylindricality buffer stopper is slightly less than described cavity internal diameter, and it is trapezoidal arcuate furrow that the outer wall of described buffer stopper has cross section, and the degree of depth of described groove increases gradually to the end of buffer stopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509933.4A CN103851025A (en) | 2012-11-30 | 2012-11-30 | Groove buffer of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509933.4A CN103851025A (en) | 2012-11-30 | 2012-11-30 | Groove buffer of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103851025A true CN103851025A (en) | 2014-06-11 |
Family
ID=50859052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210509933.4A Pending CN103851025A (en) | 2012-11-30 | 2012-11-30 | Groove buffer of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851025A (en) |
-
2012
- 2012-11-30 CN CN201210509933.4A patent/CN103851025A/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 |