CN204312457U - Oil recovery cylinder cushion device - Google Patents
Oil recovery cylinder cushion device Download PDFInfo
- Publication number
- CN204312457U CN204312457U CN201420737793.0U CN201420737793U CN204312457U CN 204312457 U CN204312457 U CN 204312457U CN 201420737793 U CN201420737793 U CN 201420737793U CN 204312457 U CN204312457 U CN 204312457U
- Authority
- CN
- China
- Prior art keywords
- cell body
- spiral throttle
- cylinder
- oil
- sliding sleeve
- 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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Abstract
The utility model relates to a kind of oil recovery cylinder cushion device, its technological scheme is: the side of cylinder body connects cylinder barrel, the inside of described cylinder barrel is provided with piston rod, the external stability piston of described piston rod, spiral throttle cell body is tightened on plunger end, cylinder barrel is divided into buffer cavity and oil inlet and oil return chamber by described spiral throttle cell body, it is through flow hole between described buffer cavity and oil inlet and oil return chamber, connection one end of spiral throttle cell body and buffer cavity is provided with baffle plate, the left end of described spiral throttle cell body is provided with floating bushing, the right-hand member of described spiral throttle cell body is provided with floating sliding sleeve, spring is provided with between described floating sliding sleeve and floating bushing, the beneficial effects of the utility model are: this damping device does not affect by the coaxality of piston rod and cylinder barrel, can effectively solve the problem, and ensure that the normal table work that oil hydraulic cylinder cushions well.
Description
Technical field
The utility model relates to a kind of oil recovery equipment, particularly one oil recovery cylinder cushion device.
Background technique
Oil hydraulic cylinder is requisite executive component in hydraulic pressure installation.When the piston movement in oil hydraulic cylinder is to stroke end, can impact with end cap, produce noise, therefore most of oil hydraulic cylinder is provided with damping device in stroke end, particularly movement velocity higher or heavy moving parts is larger time, more needing to prevent and reduce this impact, thus avoid oil hydraulic cylinder and actuator to cause damage, also reducing the piston noise that liquid sends when changing moving direction simultaneously.So just require that the buffering of oil hydraulic cylinder is both handy, durable again.
Because the principal element of cylinder cushion device normal table work is piston rod and cylinder barrel should have good coaxality.This coaxality is ensured with the Spielpassung of front and rear cover, piston and the form and position tolerance of each parts respectively by piston rod and cylinder barrel, due to the impact of the many factors such as design, manufacture, assembling, use in practice, this coaxality is usually made to be difficult to control.The damping device of constant throttle-type and traitorous flow pattern is in current practical application, what adopt is the principle of restriction (or gap) throttling buffering, the situation of so often pulling, gluing together, also exists the shortcomings such as little, the easy blocking of throttling bore, compensator or trimmer pressure are large especially.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, provides a kind of oil recovery cylinder cushion device.
Its technological scheme is: comprise baffle plate, spiral throttle cell body, float sliding sleeve, spring, floating bushing, piston, cylinder barrel, piston rod, oil inlet and outlet, cylinder body, the side of cylinder body connects cylinder barrel, the inside of described cylinder barrel is provided with piston rod, the external stability piston of described piston rod, spiral throttle cell body is tightened on plunger end, cylinder barrel is divided into buffer cavity and oil inlet and oil return chamber by described spiral throttle cell body, it is through flow hole between described buffer cavity and oil inlet and oil return chamber, connection one end of spiral throttle cell body and buffer cavity is provided with baffle plate, the left end of described spiral throttle cell body is provided with floating bushing, the right-hand member of described spiral throttle cell body is provided with floating sliding sleeve, spring is provided with between described floating sliding sleeve and floating bushing.
The inner end of described baffle plate is by circlip for shaft axially locating.
Internal diameter and the external diameter of spiral throttle cell body of described floating sliding sleeve are that small―gap suture coordinates.
The beneficial effects of the utility model are: this damping device does not affect by the coaxality of piston rod and cylinder barrel, can effectively solve the problem, and ensure that the normal table work that oil hydraulic cylinder cushions well.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
In upper figure: circlip for shaft 1, baffle plate 2, spiral throttle cell body 3, floating sliding sleeve 4, spring 5, floating bushing 6, piston 7, cylinder barrel 8, piston rod 9, oil inlet and outlet 10, cylinder body 11, buffer cavity a, oil inlet and oil return chamber b, through flow hole c.
Embodiment
By reference to the accompanying drawings 1, the utility model will be further described:
The utility model comprises baffle plate 2, spiral throttle cell body 3, float sliding sleeve 4, spring 5, floating bushing 6, piston 7, cylinder barrel 8, piston rod 9, oil inlet and outlet 10, cylinder body 11, the side of cylinder body 11 connects cylinder barrel 8, the inside of described cylinder barrel 8 is provided with piston rod 9, the external stability piston 7 of described piston rod 9, spiral throttle cell body 3 is tightened on piston rod 9 tail end, cylinder barrel 8 is divided into buffer cavity a and oil inlet and oil return chamber b by described spiral throttle cell body 3, be through flow hole c between described buffer cavity a and oil inlet and oil return chamber b, spiral throttle cell body 3 is provided with baffle plate 2 with connection one end of buffer cavity a, the left end of described spiral throttle cell body 3 is provided with floating bushing 6, the right-hand member of described spiral throttle cell body 3 is provided with floating sliding sleeve 4, spring is provided with between described floating sliding sleeve 4 and floating bushing 6.
Preferably, the inner end of baffle plate 2 is by circlip for shaft 1 axially locating.
Preferably, the internal diameter of floating sliding sleeve 4 is that small―gap suture coordinates with the external diameter of spiral throttle cell body 3.
Working principle: spiral throttle cell body 3 is tightened on piston rod 9 tail end, baffle plate 2 is axially located by circlip for shaft 1, float sliding sleeve 4, the part that floating bushing 6 manufactures for high-abrasive material, under the effect of spring 5 respectively with baffle plate 2, piston rod 9 afterbody end face laminating and spacing, and empty boasting is on spiral throttle cell body 3, the internal diameter of floating sliding sleeve 4 is that small―gap suture coordinates with the external diameter of spiral throttle cell body 3, finally ground by grinding after first turning and ensure gap and precision, and the float right side of sliding sleeve 4 and coordinating by fine finishing to ensure precision and gap of cylinder body 11 ladder shrinkage pool shoulder end face, belong to end face seal.Gap is left in spiral throttle cell body 3 left side and piston 7 right side, and spiral throttle cell body 3 is provided with the spiral triangular groove of cross section gradual change, and designs a breach c, as through-flow mouth at tail end.Be illustrated as damping device to start to enter working state, now, the sliding sleeve 4 that floats tightly is pressed against on cylinder body 11 ladder shrinkage pool shoulder end face under the active force of spring 5 and oil back chamber b, form end face seal, fluid in oil back chamber b cannot pass through buffer cavity a smoothly through return opening 10 oil return, can only through the spiral triangular groove of spiral throttle cell body 3 and the gap oil return between floating sliding sleeve 4 and this cover.Along with the continuation of piston 7 is moved, spring 5 progressively compresses, and the sliding sleeve 4 that floats is close to and is combined on cylinder body 11 ladder shrinkage pool shoulder end face always, because the spiral triangular groove cross section of throttling reduces gradually along with the increase of cushion stroke, drag effect increases gradually, piston 7 speed is slowed down, and buffer function is even.When piston 7 is about to close to stroke end, oneself is a lot of through have dropped for speed, the left side of floating sliding sleeve 4 is substantially without pressure, oil back chamber b inner fluid can by the end segment chute gap oil return of floating sliding sleeve 4 and spiral throttle cell body 3, finally, the right side contact cylinder body 11 of piston 7, whole buffering course terminates, and oil hydraulic cylinder is braked.
The beneficial effects of the utility model are: this damping device does not affect by the coaxality of piston rod and cylinder barrel, can effectively solve the problem, and ensure that the normal table work that oil hydraulic cylinder cushions well.
Claims (3)
1. an oil recovery cylinder cushion device, it is characterized in that: comprise baffle plate, spiral throttle cell body, float sliding sleeve, spring, floating bushing, piston, cylinder barrel, piston rod, oil inlet and outlet, cylinder body, the side of cylinder body connects cylinder barrel, the inside of described cylinder barrel is provided with piston rod, the external stability piston of described piston rod, spiral throttle cell body is tightened on plunger end, cylinder barrel is divided into buffer cavity and oil inlet and oil return chamber by described spiral throttle cell body, it is through flow hole between described buffer cavity and oil inlet and oil return chamber, connection one end of spiral throttle cell body and buffer cavity is provided with baffle plate, the left end of described spiral throttle cell body is provided with floating bushing, the right-hand member of described spiral throttle cell body is provided with floating sliding sleeve, spring is provided with between described floating sliding sleeve and floating bushing.
2. oil recovery cylinder cushion device according to claim 1, is characterized in that: the inner end of described baffle plate is by circlip for shaft axially locating.
3. oil recovery cylinder cushion device according to claim 1, is characterized in that: internal diameter and the external diameter of spiral throttle cell body of described floating sliding sleeve are that small―gap suture coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420737793.0U CN204312457U (en) | 2014-12-01 | 2014-12-01 | Oil recovery cylinder cushion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420737793.0U CN204312457U (en) | 2014-12-01 | 2014-12-01 | Oil recovery cylinder cushion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204312457U true CN204312457U (en) | 2015-05-06 |
Family
ID=53134775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420737793.0U Expired - Fee Related CN204312457U (en) | 2014-12-01 | 2014-12-01 | Oil recovery cylinder cushion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204312457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596396A (en) * | 2018-11-02 | 2019-04-09 | 宁国飞鹰汽车零部件股份有限公司 | A kind of compression mold |
| CN112943738A (en) * | 2021-02-04 | 2021-06-11 | 张嘉乐 | Constant throttling type buffer structure |
-
2014
- 2014-12-01 CN CN201420737793.0U patent/CN204312457U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596396A (en) * | 2018-11-02 | 2019-04-09 | 宁国飞鹰汽车零部件股份有限公司 | A kind of compression mold |
| CN112943738A (en) * | 2021-02-04 | 2021-06-11 | 张嘉乐 | Constant throttling type buffer structure |
| CN112943738B (en) * | 2021-02-04 | 2023-05-12 | 山东华液液压气动机电设备有限公司 | Constant throttling type buffer structure |
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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: 20150506 Termination date: 20151201 |
|
| EXPY | Termination of patent right or utility model |