CN204140545U - A kind of hydraulic mechanism increasing cylinder buffer stroke - Google Patents
A kind of hydraulic mechanism increasing cylinder buffer stroke Download PDFInfo
- Publication number
- CN204140545U CN204140545U CN201420593847.0U CN201420593847U CN204140545U CN 204140545 U CN204140545 U CN 204140545U CN 201420593847 U CN201420593847 U CN 201420593847U CN 204140545 U CN204140545 U CN 204140545U
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- CN
- China
- Prior art keywords
- oil
- valve
- oil pocket
- cylinder
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of hydraulic mechanism increasing cylinder buffer stroke, comprise oil cylinder; Described oil cylinder is divided into two oil pockets by piston, is respectively the first oil pocket and the second oil pocket; Described first oil pocket is connected selector valve respectively by oil pipe through hydraulic lock with the second oil pocket; Selector valve is connected fuel tank by main oil pipe with return tube; Described main oil pipe is provided with oil pump; Trimmer valve is connected with between described first oil pocket and hydraulic lock; Equilibrium valve is connected with between described second oil pocket and hydraulic lock; Relief valve is connected with between main oil pipe between described oil pump and selector valve and return tube.The utility model makes to reduce compression shock when oil cylinder power is closed by the combination of equilibrium valve, trimmer valve and relief valve.
Description
Technical field
The utility model relates to hydraulic mechanism.
Background technique
In hydraulic system, when oil cylinder power system is closed, very large impact force can be produced.Huge impact force may cause the object on connected pipes piston rod to damage, and also produces enormous impact simultaneously, may destroy oil pipe loop to oil pipe loop.
Summary of the invention
Problem to be solved in the utility model: reduce the impact force that when power system is closed, hydraulic jack produces, avoids the working life in damaging articles and prolongation oil pipe loop.
For solving the problem, the scheme that the utility model adopts is as follows:
Increase a hydraulic mechanism for cylinder buffer stroke, comprise oil cylinder; Described oil cylinder is divided into two oil pockets by piston, is respectively the first oil pocket and the second oil pocket; Described first oil pocket is connected selector valve respectively by oil pipe through hydraulic lock with the second oil pocket; Selector valve is connected fuel tank by main oil pipe with return tube; Described main oil pipe is provided with oil pump; Trimmer valve is connected with between described first oil pocket and hydraulic lock; Equilibrium valve is connected with between described second oil pocket and hydraulic lock; Relief valve is connected with between main oil pipe between described oil pump and selector valve and return tube.
Technique effect of the present utility model is as follows: equilibrium valve is also known as flow-limiting valve or constant flow rate valve, in certain pressure differential range, the flow that can effectively control to pass through keeps a constant value, namely when the pressure reduction before and after valve increases, flow can be kept not increase by the action automatically turned down of valve, otherwise, when pressure reduction reduces, valve is opened greatly automatically, and flow is still constant according to maintenance.Trimmer valve i.e. relief valve, when surge pressure is excessive, relief valve is opened, thus plays the effect reducing compression shock.The utility model, by installing equilibrium valve in a loop, installs trimmer valve in another loop, makes to reduce compression shock when oil cylinder power is closed.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details.
As shown in Figure 1, a kind of hydraulic mechanism increasing cylinder buffer stroke, comprises oil cylinder 1.Piston 11 is provided with in oil cylinder 1.Piston 11 connects piston rod 12.Piston rod 12 passes oil cylinder and connects load 99.Oil cylinder 1 is divided into two oil pockets by piston 11, is respectively the first oil pocket 13 and the second oil pocket 14.First oil pocket 13 is connected selector valve 22 respectively by oil pipe through hydraulic lock 21 with the second oil pocket 14.Selector valve 22 is connected fuel tank 3 by main oil pipe 23 with return tube 24.Main oil pipe 23 is provided with oil pump 25.Oil pipe pipeline between the first oil pocket 13 and hydraulic lock 21 is provided with trimmer valve 32.Oil pipe pipeline between the second oil pocket 14 and hydraulic lock 21 is provided with equilibrium valve 31.Main oil pipe between oil pump 25 and selector valve 22 and be connected with relief valve 33 between return tube 24.
Working principle of the present utility model is as follows: provide power support by oil pump 25 in hydraulic mechanism of the present utility model, due to the metering function of equilibrium valve 31 and the buffer function of trimmer valve 32, in oil pump normally works, the hydraulic fluid flow rate of the first oil pocket 13 and the turnover of the second oil pocket 14 is steady, makes piston 11 can steadily movement.When oil pump 25 stops quitting work instantaneously, because the effect of inertia of load 99 also can move a segment distance, but due to the metering function of equilibrium valve 31 and the buffer function of trimmer valve 32, become slow during stopping, thus decrease compression shock.
Claims (1)
1. increase a hydraulic mechanism for cylinder buffer stroke, comprise oil cylinder; Described oil cylinder is divided into two oil pockets by piston, is respectively the first oil pocket and the second oil pocket; Described first oil pocket is connected selector valve respectively by oil pipe through hydraulic lock with the second oil pocket; Selector valve is connected fuel tank by main oil pipe with return tube; Described main oil pipe is provided with oil pump; It is characterized in that, between described first oil pocket and hydraulic lock, be connected with trimmer valve; Equilibrium valve is connected with between described second oil pocket and hydraulic lock; Relief valve is connected with between main oil pipe between described oil pump and selector valve and return tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420593847.0U CN204140545U (en) | 2014-10-15 | 2014-10-15 | A kind of hydraulic mechanism increasing cylinder buffer stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420593847.0U CN204140545U (en) | 2014-10-15 | 2014-10-15 | A kind of hydraulic mechanism increasing cylinder buffer stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140545U true CN204140545U (en) | 2015-02-04 |
Family
ID=52417233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420593847.0U Expired - Fee Related CN204140545U (en) | 2014-10-15 | 2014-10-15 | A kind of hydraulic mechanism increasing cylinder buffer stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204140545U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013524A (en) * | 2017-05-31 | 2017-08-04 | 江苏柳工机械有限公司 | Loading machine movable arm cylinder trimmer valve and its steerable system |
| CN108888826A (en) * | 2018-06-11 | 2018-11-27 | 杭州光启医疗科技发展有限公司 | Administration pump with successive administration function |
-
2014
- 2014-10-15 CN CN201420593847.0U patent/CN204140545U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013524A (en) * | 2017-05-31 | 2017-08-04 | 江苏柳工机械有限公司 | Loading machine movable arm cylinder trimmer valve and its steerable system |
| CN108888826A (en) * | 2018-06-11 | 2018-11-27 | 杭州光启医疗科技发展有限公司 | Administration pump with successive administration function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20181015 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |