CN205689516U - A kind of hydraulic cylinder buffer structure - Google Patents
A kind of hydraulic cylinder buffer structure Download PDFInfo
- Publication number
- CN205689516U CN205689516U CN201620583202.8U CN201620583202U CN205689516U CN 205689516 U CN205689516 U CN 205689516U CN 201620583202 U CN201620583202 U CN 201620583202U CN 205689516 U CN205689516 U CN 205689516U
- Authority
- CN
- China
- Prior art keywords
- cushion pins
- piston rod
- endoporus
- buffer structure
- cushion
- 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 discloses a kind of hydraulic cylinder buffer structure, it includes spring, cushion pins, piston rod, back-up ring and cylinder bottom；Described piston rod has endoporus, the endoporus of this piston rod and cushion pins matched in clearance；Described cushion pins left end also has endoporus, and cushion pins left end is provided with spring, and this spring passes through cushion pins Internal hole positioning, and the circumferential surface of cushion pins is provided with step and is easy to coordinate with back-up ring, and the right side of cushion pins has oil groove, and this end face is corresponding with the oil-out of cylinder bottom.This hydraulic cylinder buffer structure has and is easily worked, manufactures and maintenance cost is low, the feature of good buffer effect.
Description
Technical field
This utility model relates to hydraulic jack, is specifically related to a kind of hydraulic cylinder buffer structure.
Background technology
Hydrocylinder buffering device is a kind of critical function mechanism of hydraulic jack, when hydraulic jack has one for driving
When determining the object of quality, will have bigger kinetic energy when hydraulic jack moves to stroke end, process as do not done deceleration, hydraulic oil
Cylinder piston and cylinder cap will occur mechanical collision, produce impact, noise, have destructiveness.In order to avoid this thing happens, need
Buffer gear is set in hydraulic jack, in prior art commonly used plunger type buffer structure be packed with at internal piston bright and clean
Degree, circularity and the highest cushion collar of dimensional accuracy are also fixed with snap ring, and the high-precision endoporus of cushion collar is as cushion hole, in high precision
Buffer plunger and cylinder bottom connect into a fixing entirety, when cushion collar is close to before buffer plunger during work, piston and cylinder bottom
Between the hydraulic oil that is full of can cross oil passage effluent compressing cylinder easily, when buffer plunger enters in the middle of the buffer plunger
During cushion hole, this channel narrows is until cannot circulate, and now hydraulic oil can only flow out by the pore from cylinder bottom；Due to stream
Road constantly narrows and causes the pressure of liquid between piston and cylinder bottom to steeply rise thus to the generation of whole motion and motion side
To contrary acceleration, reach buffering effect.
Above-mentioned plunger type buffer structure has the disadvantage that to be needed constantly to test, and requirement and effect according to buffering are adjusted
The matched in clearance requirement of whole cushion hole and buffer plunger, after obtaining correct gap data, adds and the most strictly controls buffering man-hour
The tolerance of hole and plunger ensures both gaps, and required precision more than 7 grades is high-grade, line position tolerance and surface smoothness requirements also pole
For harshness, otherwise can fill disconnected plunger or produce abnormal sound.
Summary of the invention
The purpose of this utility model is to provide and a kind of is easily worked, manufactures and maintenance cost is low, the hydraulic pressure of good buffer effect
Cylinder buffer structure, rushes to avoid the piston when hydraulic jack moves to stroke end to produce mechanical collision with cylinder cap
Hit, the destruction situation of noise.
For realizing object above, this utility model one hydraulic cylinder buffer structure include spring, cushion pins, piston rod,
Back-up ring and cylinder bottom；Described piston rod has endoporus, the endoporus of this piston rod and cushion pins matched in clearance；Described cushion pins left end is also
Having endoporus, cushion pins left end is provided with spring, and this spring passes through cushion pins Internal hole positioning, and the circumferential surface of cushion pins is provided with step
Being easy to coordinate with back-up ring, the right side of cushion pins has oil groove, and this end face is corresponding with the oil-out of cylinder bottom.
Above-mentioned hydraulic cylinder buffer structure uses plane buffer structure, it is not necessary at the cylinder bottom logical oil of reprocessing pore；Work
Time the right planar ends of cushion pins directly against cylinder bottom oil-out, only stay the logical oil of oil groove narrow and small on this end face；Can pass through during machining
The size selecting this oil groove directly controls buffering effect, it is not necessary to the requirement on machining accuracy that matched in clearance is harsh, simple in construction, processing
Low with maintenance cost, structure is reliable, good buffer effect.
Accompanying drawing explanation
Fig. 1 is this utility model one hydraulic cylinder buffer structure schematic diagram.
Reference: spring 1, cushion pins 2, piston rod 3, back-up ring 4, cylinder bottom 5 and cushion pins oil groove 6.
Detailed description of the invention
With detailed description of the invention, this utility model one hydraulic cylinder buffer structure is made the most below in conjunction with the accompanying drawings
Describe in detail bright.
The hydraulic cylinder buffer structure of this utility model one shown in Fig. 1 includes spring 1, cushion pins 2, piston rod 3, back-up ring 4
With cylinder bottom 5；Described piston rod 3 has endoporus, the endoporus of this piston rod 3 and cushion pins 2 matched in clearance；Described cushion pins 2 left end
Also having endoporus, cushion pins 2 left end is provided with spring 1, and this spring 1 is by cushion pins Internal hole positioning, and the circumferential surface of cushion pins 2 sets
Having step to be easy to back-up ring 4 to coordinate, the right side of cushion pins 2 has oil groove 6, and this end face is corresponding with the oil-out of cylinder bottom 5.
When piston rod assembly moves to cylinder bottom 5, hydraulic oil can easily flow out oil cylinder 5, when piston rod group by A circuit
When part encounters oil cylinder, the right side of cushion pins 2 first contacting cylinder bottom, now A circuit can only pass through from cushion pins oil groove 6, due to
This logical oil circuit footpath has become the narrowest, causes the pressure of liquid between piston and cylinder bottom 5 to steeply rise thus to whole motion
The acceleration that mechanism produces and the direction of motion is contrary, until piston rod encounters bottom completely, cushion pins pressure 2 enters piston rod 3.
Claims (1)
1. a hydraulic cylinder buffer structure, is characterized in that: it includes spring, cushion pins, piston rod, back-up ring and cylinder bottom；Described
Piston rod has endoporus, the endoporus of this piston rod and cushion pins matched in clearance；Described cushion pins left end also has endoporus, cushion pins
Left end is provided with spring, and this spring passes through cushion pins Internal hole positioning, and the circumferential surface of cushion pins is provided with step and is easy to coordinate with back-up ring,
The right side of cushion pins has oil groove, and this end face is corresponding with the oil-out of cylinder bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620583202.8U CN205689516U (en) | 2016-06-16 | 2016-06-16 | A kind of hydraulic cylinder buffer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620583202.8U CN205689516U (en) | 2016-06-16 | 2016-06-16 | A kind of hydraulic cylinder buffer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205689516U true CN205689516U (en) | 2016-11-16 |
Family
ID=57428005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620583202.8U Expired - Fee Related CN205689516U (en) | 2016-06-16 | 2016-06-16 | A kind of hydraulic cylinder buffer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205689516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533567A (en) * | 2018-06-26 | 2018-09-14 | 徐州永佳液压设备有限公司 | Buffering structure of hydraulic cylinder |
-
2016
- 2016-06-16 CN CN201620583202.8U patent/CN205689516U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533567A (en) * | 2018-06-26 | 2018-09-14 | 徐州永佳液压设备有限公司 | Buffering structure of hydraulic cylinder |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 Termination date: 20190616 |