CN203189394U - Single outlet rod hydraulic cylinder rodless cavity throttling buffer device - Google Patents
Single outlet rod hydraulic cylinder rodless cavity throttling buffer device Download PDFInfo
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- CN203189394U CN203189394U CN 201320122154 CN201320122154U CN203189394U CN 203189394 U CN203189394 U CN 203189394U CN 201320122154 CN201320122154 CN 201320122154 CN 201320122154 U CN201320122154 U CN 201320122154U CN 203189394 U CN203189394 U CN 203189394U
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- buffer
- piston
- spring
- rodless cavity
- rod
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Abstract
The utility model relates to a single outlet rod hydraulic cylinder rodless cavity throttling buffer device which comprises a cylinder barrel, a piston, a piston rod, a buffer rod, a spring, a buffer disc and an end cover. One end of the piston rod is axially connected with the buffer rod. A triangular groove is formed in the buffer rod and in an axial cross section. The depth of the triangular groove gradually decreases inwards from the end portion. The spring and the buffer disc are sequentially sleeved in the buffer rod. One end of the spring is closely attached to the end portion of the piston rod. The other end of the spring is closely attached to one end of the buffer disc. The other end of the buffer disc is closely attached to the interface of a spring cavity and a buffer cavity. When pressure oil pushes the piston to motion and approach the end cover, an oil return circuit is gradually closed by the buffer disc, the oil can only be discharged slowly through the triangular groove in the buffer rod to form buffer hydraulic resistance; as the through-flow sectional area of the triangular groove gradually decreases under the condition that the piston continues moving, the movement speed of the piston is also gradually lowered to realize braking buffer. The single outlet rod hydraulic cylinder rodless cavity throttling buffer device has the advantages of being reasonable in design, simple in structure and remarkable in buffering effect.
Description
Technical field
The utility model relates to a kind of cylinder cushion device, and particularly the throttling damping device structure in a kind of asymmetric servo cylinder rodless cavity belongs to hydraulic element design and manufacturing technology field.
Background technique
During hydraulic cylinder works, because the quality of moving element is bigger, movement velocity is higher, causes inertial force bigger.When piston moved to the terminal of cylinder barrel, meeting and end cap generation mechanical collision produced very big impact and noise, had a strong impact on mechanical precision, even caused destructive accident, for this reason the normal impact mitigation measure that adopts in the oil hydraulic cylinder.A kind of asymmetric servo cylinder rodless cavity buffer structure as shown in Figure 1, the endoporus of piston B is installed in external diameter one end of piston rod C; The external diameter of piston B is sealed and matched in the chamber of cylinder barrel A, and the chamber is divided into rodless cavity and rod chamber; One end of end cap D shutoff cylinder barrel A rodless cavity, the motion terminals of formation piston B.In order to reach the buffering purpose, an end that is positioned at rodless cavity at piston rod C is provided with a buffer bar head c, the end face that is positioned at rodless cavity at end cap D is provided with a buffer cavity d, when piston B promotion piston rod C moves to end cap D direction, buffer bar head c enters in the buffer cavity d, because the gap between buffer bar head c and the buffer cavity d is very little, so flowing back to the flow of fuel tank, the interior fluid of rodless cavity diminishes, realize the purpose that cushions with this.From above-mentioned buffer structure as can be seen: after buffer bar head c enters buffer cavity d, gap no change between the two, so buffer speed also is invariable, therefore still there is impingement phenomenon between piston B and the end cap D, just the degree of bump decreases, and can not realize the buffering purpose in essence ground.
Summary of the invention
At existing asymmetric servo cylinder rodless cavity buffer structure technical deficiency as stated in the Background Art, the utility model proposes a kind of asymmetric servo cylinder rodless cavity throttling damping device.
The utility model Bian gets following technological scheme and implements: a kind of asymmetric servo cylinder rodless cavity throttling damping device, comprise cylinder barrel, piston, piston rod, buffer bar, spring, buffer disc and end cap, piston inner hole is installed in external diameter one end of piston rod, piston external diameter is sealed and matched in the chamber of cylinder barrel, and the chamber is divided into rodless cavity and rod chamber; The end face of end cap shutoff cylinder barrel rodless cavity, and end cap is provided with the turnover oilhole that communicates with rodless cavity, it is characterized in that:
The end that described piston rod is positioned at rodless cavity axially connects buffer bar;
Inside external diameter is provided with triangular groove in the axial cross section to described buffer bar from the end, and the degree of depth of triangular groove is inwardly gradually little by the end;
The end face that described end cap is positioned at rodless cavity is provided with spring chamber, and the bottom of spring chamber is provided with buffer cavity, and buffer cavity communicates with turnover oilhole on the end cap;
Described spring and buffer disc are inserted in buffer bar successively, and an end and the piston rod end of spring be close to, and an end of the other end and buffer disc is close to, and the interface of the other end of buffer disc and spring chamber and buffer cavity is close to;
The interior end points of described triangular groove is positioned at the buffer bar section corresponding with spring.
The triangular groove that the utility model is provided with by buffer bar is realized the throttling purpose.When pressure oil enters that rod chamber promotes piston and piston rod movement and during near end cap, oil circuit is cushioned dish and seals gradually, fluid in the rodless cavity can only slowly be discharged to the oil outlet on the end cap by the axial triangular groove on the buffer bar, form the buffer solution pressure resistance; Along with the cross-sectional flow area of triangular groove continues to diminish gradually under mobile at piston, the movement velocity of piston also slows down gradually, and realizes the braking buffering.
The utlity model has reasonable in design, simple in structure, the significant advantage of cushioning effect.
Description of drawings
Fig. 1 is traditional asymmetric servo cylinder buffer structure schematic representation;
Fig. 2 is the utility model buffer structure schematic representation;
Fig. 3 is the plan view of buffer bar in the utility model;
Fig. 4 is the sectional view of bowing of buffer bar.
In Fig. 1,2,3,4: 1 cylinder barrel, 2 pistons, 3 piston rods, 4 setting sleeves, 5 springs, 6 buffer discs, 7 buffer bars, 701 triangular grooves, 8 end caps, 801 spring chambers, 802 buffer cavitys.
Embodiment
As shown in Figure 1, piston 2 endoporus are installed in external diameter one end of piston rod 3, and external diameter is sealed and matched in the chamber of cylinder barrel 1, and the chamber is divided into rodless cavity and rod chamber; The end face of end cap 8 shutoff cylinder barrels 1 rodless cavity, and end cap 8 is provided with the turnover oilhole that communicates with rodless cavity; The end that piston rod 3 is positioned at rodless cavity axially connects buffer bar 7; Inside external diameter is provided with triangular groove 701 in the axial cross section to buffer bar 7 from the end, and the degree of depth of triangular groove 701 is inwardly gradually little by the end; The end face that end cap 8 is positioned at rodless cavity is provided with spring chamber 801, and the bottom of spring chamber 801 is provided with buffer cavity 802, and buffer cavity 802 communicates with turnover oilhole on the end cap 8; Spring 5 is inserted in buffer bar 7 successively with buffer disc 6, and an end of spring 5 and piston rod 3 ends are close to, and an end of the other end and buffer disc 6 is close to, and the interface of the other end of buffer disc 6 and spring chamber 801 and buffer cavity 802 is close to; The interior end points of the triangular groove 701 on the buffer bar 7 is positioned at the corresponding bar section of buffer bar 7 and spring 5; The positioning action of 4 piston rod 3 motion terminals of setting sleeve.
In the work, when pressure oil enters rod chamber and promotes piston 2 and piston rod 3 motions and make setting sleeve 4 near end cap 8, oil circuit is cushioned dish 6 sealing gradually, fluid in the rodless cavity can only slowly be discharged to the oil outlet on the end cap 8 by the axial triangular groove 701 on the buffer bar 7, form the buffer solution pressure resistance; Along with the cross-sectional flow area of triangular groove 701 continues to diminish gradually under mobile at piston 2, the movement velocity of piston 2 also slows down gradually, and realizes the braking buffering thus.
Claims (2)
1. asymmetric servo cylinder rodless cavity throttling damping device, comprise cylinder barrel, piston, piston rod, buffer bar, spring, buffer disc and end cap, piston inner hole is installed in external diameter one end of piston rod, and piston external diameter is sealed and matched in the chamber of cylinder barrel, and the chamber is divided into rodless cavity and rod chamber; The end face of end cap shutoff cylinder barrel rodless cavity, and end cap is provided with the turnover oilhole that communicates with rodless cavity, it is characterized in that:
The end that described piston rod is positioned at rodless cavity axially connects buffer bar;
Inside external diameter is provided with triangular groove in the axial cross section to described buffer bar from the end, and the degree of depth of triangular groove is inwardly gradually little by the end;
The end face that described end cap is positioned at rodless cavity is provided with spring chamber, and the bottom of spring chamber is provided with buffer cavity, and buffer cavity communicates with turnover oilhole on the end cap;
Described spring and buffer disc are inserted in buffer bar successively, and an end and the piston rod end of spring be close to, and an end of the other end and buffer disc is close to, and the interface of the other end of buffer disc and spring chamber and buffer cavity is close to.
2. a kind of asymmetric servo cylinder rodless cavity throttling damping device according to claim 1 is characterized in that the interior end points of described triangular groove being positioned at the buffer bar section corresponding with spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320122154 CN203189394U (en) | 2013-03-18 | 2013-03-18 | Single outlet rod hydraulic cylinder rodless cavity throttling buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320122154 CN203189394U (en) | 2013-03-18 | 2013-03-18 | Single outlet rod hydraulic cylinder rodless cavity throttling buffer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189394U true CN203189394U (en) | 2013-09-11 |
Family
ID=49106256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320122154 Expired - Fee Related CN203189394U (en) | 2013-03-18 | 2013-03-18 | Single outlet rod hydraulic cylinder rodless cavity throttling buffer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319626A (en) * | 2018-11-05 | 2019-02-12 | 广州广日电梯工业有限公司 | A kind of novel elevator hydraulic bjuffer |
-
2013
- 2013-03-18 CN CN 201320122154 patent/CN203189394U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319626A (en) * | 2018-11-05 | 2019-02-12 | 广州广日电梯工业有限公司 | A kind of novel elevator hydraulic bjuffer |
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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: 20130911 Termination date: 20150318 |
|
| EXPY | Termination of patent right or utility model |