CN103851018A - Hydraulic-cylinder annular-space buffer - Google Patents
Hydraulic-cylinder annular-space buffer Download PDFInfo
- Publication number
- CN103851018A CN103851018A CN201210509798.3A CN201210509798A CN103851018A CN 103851018 A CN103851018 A CN 103851018A CN 201210509798 A CN201210509798 A CN 201210509798A CN 103851018 A CN103851018 A CN 103851018A
- Authority
- CN
- China
- Prior art keywords
- piston
- hydraulic
- cylinder
- plunger
- buffer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Actuator (AREA)
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 stepped structure; the diameters of steps gradually decreases towards the direction away from the piston, and the diameter of the step at the innermost end is smaller than the inner 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 ladder-type structure, and the diameter of described step is to reducing gradually away from piston direction, and the diameter of described inner terminal step is less than described cylindrical cavity internal 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.
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 4 being fixedly connected with oil hydraulic cylinder 2, piston 3 is fixedly connected with plunger 1, it is characterized in that: described cylinder cap 4 has cylindrical cavity 5 and throttle orifice 6, described throttle orifice 6 is communicated with described cavity 5, described plunger 1 is through described piston 3, the right side plunger part 10 of described piston 3 is ladder-type structure, the diameter of step is to reducing gradually away from piston 3 directions, and the diameter of inner terminal step 11 is less than the internal diameter of described cylindrical cavity 5, therefore between piston 3 right side plunger parts 10 and cavity 5, form expansion stepped shaft 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 ladder-type annular space 7 and throttle orifice 6, 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 expand the acceleration that stepped shaft annular space 7 has reduced piston, the speed of piston 3 is reduced gradually, therefore 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, described plunger is through described piston, the right side plunger portion of described piston is divided into ladder-type structure, and the diameter of described step is to reducing gradually away from piston direction, and the diameter of described inner terminal step is less than described cylindrical cavity internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509798.3A CN103851018A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder annular-space buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509798.3A CN103851018A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder annular-space buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103851018A true CN103851018A (en) | 2014-06-11 |
Family
ID=50859045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210509798.3A Pending CN103851018A (en) | 2012-11-30 | 2012-11-30 | Hydraulic-cylinder annular-space buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851018A (en) |
-
2012
- 2012-11-30 CN CN201210509798.3A patent/CN103851018A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203161708U (en) | Buffering hydraulic oil cylinder | |
| CN203614510U (en) | Hydraulic buffering oil cylinder | |
| KR20120112213A (en) | Hydraulic shock absorber | |
| CN203685765U (en) | Oil cylinder buffering structure | |
| CN103851017A (en) | Hydraulic-cylinder annular-space buffer | |
| CN103851026A (en) | Porous buffer of hydraulic cylinder | |
| CN103851022A (en) | Hydraulic buffer | |
| CN103851018A (en) | Hydraulic-cylinder annular-space buffer | |
| CN103851016A (en) | Hydraulic-cylinder annular-space buffer | |
| CN103851023A (en) | Groove buffer of hydraulic cylinder | |
| CN103851024A (en) | Groove buffer of hydraulic cylinder | |
| CN101988552A (en) | Buffering device capable of stabilizing pressure by damping | |
| CN103851019A (en) | Hydraulic-cylinder annular-space buffer | |
| CN103851015A (en) | Hydraulic-cylinder buffer | |
| CN204186689U (en) | Oil hydraulic cylinder | |
| CN102996570A (en) | Single-action double-graded hydraulic cylinder and engineering machine | |
| CN103629188B (en) | Buffer device for actuator drum | |
| CN201747847U (en) | Damper with gradually increasing damping rate | |
| CN104074836A (en) | High speed hydraulic cylinder buffer mechanism | |
| CN202991708U (en) | Combined throttle buffer of hydraulic cylinder | |
| CN103851025A (en) | Groove buffer of hydraulic cylinder | |
| CN103851021A (en) | Hydraulic buffer | |
| CN103851014A (en) | Hydraulic-cylinder buffer | |
| CN103851020A (en) | Hydraulic buffer | |
| CN103851027A (en) | Composite throttle buffer of hydraulic cylinder |
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 |