CN203308822U - Hydraulic cylinder - Google Patents
Hydraulic cylinder Download PDFInfo
- Publication number
- CN203308822U CN203308822U CN2013202571130U CN201320257113U CN203308822U CN 203308822 U CN203308822 U CN 203308822U CN 2013202571130 U CN2013202571130 U CN 2013202571130U CN 201320257113 U CN201320257113 U CN 201320257113U CN 203308822 U CN203308822 U CN 203308822U
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- China
- Prior art keywords
- piston
- cylinder
- oil outlet
- hydraulic cylinder
- piston rod
- 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.)
- Expired - Fee Related
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- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a hydraulic cylinder which comprises a cylinder barrel, a cylinder cover, a piston and a piston rod. An oil outlet is formed in the cylinder barrel. One end of the piston is provided with an axial chute with a triangular cross section. The piston rod is in female connection with the piston and then is fixed by a nut. A concave cavity is formed in the cylinder cover. A flow channel is formed in the cylinder cover. A check valve is arranged in the flow channel. Two ports of the flow channel are communicated with the concave cavity and the oil outlet respectively. Throttling of the oil outlet of the hydraulic cylinder can correspondingly vary according to the speed of a piston return stroke, the buffering action is even, impact is little and the braking precision is high.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder.
Background technique
When the workpiece quality of Driven by Hydraulic Cylinder larger, when travelling speed is very fast again, because the momentum had is larger, cause at stroke at the end, the phenomenon that piston and cylinder cap bump against easily occurs, produce hydraulic shock and noise, element on even damage system, for this reason, often need to arrange damping device.But generally the damping device in use is by reducing fuel-displaced flow, increase back oil cavity pressure, thereby slow down piston speed, and in reducing the process of fuel-displaced flow, but can't accomplish to adjust size in good time, cause buffer function inhomogeneous, when piston stops backhaul, still can move by a small margin by the right and left, brake accuracy is not high.
The model utility content
For solving the problems of the technologies described above, the utility model provides a kind of reduction along with piston movement speed correspondingly to turn down restriction, makes buffer function even, the oil hydraulic cylinder that brake accuracy is high.
For achieving the above object, the technical solution of the utility model is: a kind of oil hydraulic cylinder, comprise cylinder barrel, cylinder cap, piston, piston rod, cylinder barrel is provided with oil outlet, and it is leg-of-mutton axial chute that piston one end has cross section, piston rod with by nut, fixed after the piston internal thread is connected, cylinder cap is provided with cavity, in cylinder cap, be provided with runner, in runner, be provided with one-way valve, the runner two-port communicates with cavity and oil outlet respectively.
The beneficial effects of the utility model are: the large I of oil outlet throttling is done corresponding the variation according to the speed of backward stroke of the piston, and buffer function is even, impacts littlely, and brake accuracy is high.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: cylinder barrel 1, cylinder cap 2, piston 3, piston rod 4, oil outlet 5, axial chute 6, nut 7, cavity 8, runner 9, one-way valve 10.
Embodiment
Below in conjunction with accompanying drawing, and in conjunction with the embodiments, the utility model is described further.
Embodiment:
As shown in Figure 1, a kind of oil hydraulic cylinder, comprise cylinder barrel 1, cylinder cap 2, piston 3, piston rod 4, cylinder barrel 1 is provided with oil outlet 5, and it is leg-of-mutton axial chute 6 that piston 3 one ends have cross section, and piston rod 4 is with fixing by nut 7 after piston 3 internal threads are connected, cylinder cap 2 is provided with cavity 8, in cylinder cap 2, be provided with runner 9, in runner 9, be provided with one-way valve 10, runner 9 two-port communicate with cavity 8 and oil outlet 5 respectively.
Working principle of the present utility model is: when piston 3 shifted near cylinder cap 2, the hydraulic oil between piston 3 and cylinder cap 2 was flowed out by oil outlet 5 through axial chute 6, and because fuel-displaced bore reduces, the pressure in oil back chamber strengthens, and forced the piston 3 backhaul speed that slows down.Simultaneously, constantly near in the process of cylinder cap 2, fuel-displaced restriction size is also constantly dwindled, thereby makes buffer function even, impacts little along with piston 3 backhauls.In addition,, to certain position, while blocking oil outlet 5, carry on as before and have certain speed that the right and left mobile situation by a small margin occurs for preventing piston 3 when piston 3 backhauls, can by by a certain amount of hydraulic oil of the in good time discharge of one-way valve 10 until make piston 3 stop motions.
Claims (1)
1. oil hydraulic cylinder, comprise cylinder barrel (1), cylinder cap (2), piston (3), piston rod (4), described cylinder barrel (1) is provided with oil outlet (5), it is characterized in that: it is leg-of-mutton axial chute (6) that described piston (3) one ends have cross section, described piston rod (4) is with fixing by nut (7) after piston (3) internal thread is connected, described cylinder cap (2) is provided with cavity (8), in described cylinder cap (2), be provided with runner (9), in described runner (9), be provided with one-way valve (10), described runner (9) two-port communicates with cavity (8) and oil outlet (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202571130U CN203308822U (en) | 2013-05-10 | 2013-05-10 | Hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202571130U CN203308822U (en) | 2013-05-10 | 2013-05-10 | Hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203308822U true CN203308822U (en) | 2013-11-27 |
Family
ID=49615036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202571130U Expired - Fee Related CN203308822U (en) | 2013-05-10 | 2013-05-10 | Hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203308822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791324A (en) * | 2015-04-16 | 2015-07-22 | 佛山市金凯地过滤设备有限公司 | Presser two-level type oil cylinder device |
-
2013
- 2013-05-10 CN CN2013202571130U patent/CN203308822U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791324A (en) * | 2015-04-16 | 2015-07-22 | 佛山市金凯地过滤设备有限公司 | Presser two-level type oil cylinder device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20140510 |