CN201747698U - Cushioning device for hydraulic cylinder - Google Patents
Cushioning device for hydraulic cylinder Download PDFInfo
- Publication number
- CN201747698U CN201747698U CN2010202790083U CN201020279008U CN201747698U CN 201747698 U CN201747698 U CN 201747698U CN 2010202790083 U CN2010202790083 U CN 2010202790083U CN 201020279008 U CN201020279008 U CN 201020279008U CN 201747698 U CN201747698 U CN 201747698U
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- buffering
- valve
- mounting hole
- hydraulic cylinder
- way valve
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- Expired - Lifetime
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Abstract
The utility model provides a cushioning device for a hydraulic cylinder, comprising a one-way valve, a cushion regulating valve and a cushion collar, wherein the one-way valve and the cushion regulating valve are fixedly installed on the end cover or the cylinder bottom of the hydraulic cylinder, and the cushion collar is sheathed on a piston rod of the hydraulic cylinder. The inner end surfaces of the end cover and the cylinder bottom of the hydraulic cylinder are provided with cushion collar holes, and the cushion collar is in clearance fit with the cushion collar holes. The end cover or the cylinder bottom of the hydraulic cylinder is provided with a one-way valve mounting hole and a cushion regulating valve mounting hole, the one-way valve is fixedly installed in the one-way valve mounting hole, and the cushion regulating valve is fixedly installed in the cushion regulating valve mounting hole. The one-way valve mounting hole and the cushion regulating valve mounting hole are communicated with the cushion collar holes, and the end cover or the cylinder bottom of the hydraulic cylinder is provided with two auxiliary oil paths at the circumferential outer sides of the cushion collar holes. One end of each auxiliary oil path passes through the inner end surface of the end cover or the cylinder bottom, and the other end of each auxiliary oil path passes the one-way valve mounting hole or the cushion regulating valve mounting hole. The cushioning device for the hydraulic cylinder lets the hydraulic cylinder to stably and reliably operate, and the cushioning effect is good.
Description
Technical field
The utility model relates to the hydraulics field, especially relates to a kind of oil hydraulic cylinder damping device.
Background technique
The realization of oil hydraulic cylinder pooling feature at present, owing to reason perfect inadequately in the cylinder cushion device design or owing to related fluid is press-fitted reason that the quality of external member do not catch up with etc., cause oil hydraulic cylinder traveling comfort reliability not high enough, specifically can show as the breakout pressure shakiness, easily higher, and the cushioning effect in the running is good etc.
The model utility content
The technical problems to be solved in the utility model is: solve existing oil hydraulic cylinder and can not well make steady, the motion reliably of oil hydraulic cylinder with damping device, the utility model proposes a kind of oil hydraulic cylinder damping device, the sort buffer device makes the engaging pressure of oil hydraulic cylinder in running more stable, and it is better to move also more steady reliable cushioning effect.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of oil hydraulic cylinder oil hydraulic cylinder damping device, comprise the end cap or the one-way valve on the cylinder bottom that are fixedly mounted on oil hydraulic cylinder, cushion modulating valve and be sleeved on cushion collar on the piston rod of oil hydraulic cylinder, the end cap of oil hydraulic cylinder and the interior edge face of cylinder bottom offer the buffering trepanning, during stroke terminal, cushion collar cooperates with the cushion collar interporal lacuna; It is gentle to the modulating valve mounting hole to have the one-way valve mounting hole on the end cap of oil hydraulic cylinder or the cylinder bottom, one-way valve is fixedly mounted in the one-way valve mounting hole, the buffering modulating valve is fixedly mounted in the buffering modulating valve mounting hole, the one-way valve mounting hole is gentle all to communicate with the buffering trepanning towards the modulating valve mounting hole, two auxiliary oil channels are arranged outside cushion collar hole circle week on the end cap of oil hydraulic cylinder or the cylinder bottom, the interior edge face of auxiliary oil channel one end go side lid or cylinder bottom, the logical one-way valve mounting hole of the other end of auxiliary oil channel or buffering modulating valve mounting hole.
Described one-way valve is a straight check valve, the one-way valve valve body that comprises the hollow bolt shape, one-way valve valve body and one-way valve mounting hole screw-thread fit, exhaust plug and spring also are housed in the one-way valve valve body, in the one-way valve mounting hole of spring one end steel ball is housed, spring one end is against exhaust plug, the other end is against steel ball, exhaust hole is arranged on the exhaust plug, the exhaust passage is arranged on the bleeder screw, near on the periphery of bolt hexagon-head, the other end leads to the exhaust hole of exhaust plug to exhaust passage one end opening at bleeder screw.
Described buffering modulating valve comprises the buffering modulating valve valve body of hollow bolt shape, buffering modulating valve valve body and buffering modulating valve mounting hole screw-thread fit, in the buffering modulating valve valve body buffering regulation valve core is housed, one end of buffering regulation valve core is a conical surface that is resisted against the step place that buffering modulating valve mounting hole communicates with the buffering trepanning, the other end of buffering regulation valve core and the locking nut screw-thread fit that abuts against the hexagon-head that cushions the modulating valve valve body.
One-way valve is gentle correspondingly respectively to be installed in end cap or cylinder bottom and to become the one-way valve mounting hole of 90 ° of directions gentle in the modulating valve mounting hole with hydraulic fluid port by being threaded towards modulating valve, and one-way valve is 180 ° with the center line angle of buffering modulating valve.
The hexagon-head place of described straight check valve valve body is with first seal ring that prevents that hydraulic oil from leaking, and is with second seal ring that prevents that hydraulic oil from leaking on the bleeder screw.
The hexagon-head place of described buffering modulating valve valve body is with the 3rd seal ring that prevents that hydraulic oil from leaking, and the middle part of buffering regulation valve core also is with the 4th seal ring that prevents that hydraulic oil from leaking.
The beneficial effects of the utility model are: this oil hydraulic cylinder makes the existing oil hydraulic cylinder of operating ratio of oil hydraulic cylinder more steady reliable with damping device with damping device, especially cushioning effect is good.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the specific embodiment structural representation of oil hydraulic cylinder of the present utility model with damping device;
Fig. 2 is an I place partial enlarged drawing among Fig. 1;
Fig. 3 is an II place partial enlarged drawing among Fig. 1.
Among the figure: 1. end cap 2. cylinder barrels 3. cylinder bottoms 4. pistons 5. cushion collars 6. auxiliary oil channels 7. check valve 7-1. exhaust plugs 8. buffer regulating valves 9. piston rods 10. cushion trepannings 11. check valve installing holes 12. buffer regulating valve installing holes 13. check valve valve bodies 14. springs 15. steel balls 16. exhaust holes 17. bleeder screws 18. exhaust passages 19. buffer regulating valve valve bodies, 20. buffer regulating valve spools, 21. locking nuts, 22. first sealing rings, 23. second sealing rings 24. the 3rd sealing ring 25. the 4th sealing ring
Embodiment
Oil hydraulic cylinder of the present utility model shown in Fig. 1～3 specific embodiment of damping device, comprise the cushion collar 5 on end cap 1 or the one-way valve 7 on the cylinder bottom 3, buffering modulating valve 8 that is fixedly mounted on oil hydraulic cylinder and the piston rod 9 that is sleeved on oil hydraulic cylinder, the end cap 1 of oil hydraulic cylinder and the interior edge face of cylinder bottom 3 offer buffering trepanning 10, during stroke terminal, cushion collar 5 and buffering trepanning 10 Spielpassung; It is gentle to modulating valve mounting hole 12 to have one-way valve mounting hole 11 on the end cap 1 of oil hydraulic cylinder or the cylinder bottom 3, one-way valve 7 is fixedly mounted in the one-way valve mounting hole 11, buffering modulating valve 8 is fixedly mounted in the buffering modulating valve mounting hole 12, one-way valve mounting hole 11 eases up and all communicates with buffering trepanning 10 towards modulating valve mounting hole 12, in buffering trepanning 10 periphery two auxiliary oil channels 6 are arranged on the end cap 1 of oil hydraulic cylinder or the cylinder bottom 3, the interior edge face of auxiliary oil channel 6 one end go sides lid 1 or cylinder bottom 3, the logical one-way valve mounting hole 11 of the other end of auxiliary oil channel 6 or buffering modulating valve mounting hole 12.
As shown in Figure 2, one-way valve 7 is a straight check valve, the one-way valve valve body 13 that comprises the hollow bolt shape, one-way valve valve body 13 and one-way valve mounting hole 11 screw-thread fit, exhaust plug 7-1 and spring 14 also are housed in the one-way valve valve body 13, in the one-way valve mounting hole 11 of spring 14 1 ends steel ball 15 is housed, spring 14 1 ends are against exhaust plug 7-1, the other end is against steel ball 15, exhaust hole 16 is arranged on the exhaust plug 7-1, exhaust passage 18 is arranged on the bleeder screw 17, and near on the periphery of bolt hexagon-head, the other end leads to the exhaust hole 16 of exhaust plug 7-1 to exhaust passage 18 1 end openings at bleeder screw 17.
As shown in Figure 3, buffering modulating valve 8 comprises the buffering modulating valve valve body 19 of hollow bolt shape, buffering modulating valve valve body 19 and buffering modulating valve mounting hole 12 screw-thread fit, in the buffering modulating valve valve body 19 buffering regulation valve core 20 is housed, one end of buffering regulation valve core 20 is the conical surfaces that are resisted against the step place that buffering modulating valve mounting hole 12 communicates with buffering trepanning 10, the other end of buffering regulation valve core 20 and locking nut 21 screw-thread fit that abut against the hexagon-head that cushions modulating valve valve body 19.
One-way valve 7 is gentle correspondingly respectively to be installed in end cap 1 or cylinder bottom 3 and to become the one-way valve mounting hole 11 of 90 ° of directions gentle in modulating valve mounting hole 12 with hydraulic fluid port by being threaded towards modulating valve 8, and one-way valve 7 is 180 ° with the center line angle of buffering modulating valve 8.
The hexagon-head place of straight check valve valve body 13 is with first seal ring 22 that prevents that hydraulic oil from leaking, and is with second seal ring 23 that prevents that hydraulic oil from leaking on the bleeder screw 17.
The hexagon-head place of buffering modulating valve valve body 19 is with the 3rd seal ring 24 that prevents that hydraulic oil from leaking, and the middle part of buffering regulation valve core 20 also is with the 4th seal ring 25 that prevents that hydraulic oil from leaking.
When oil hydraulic cylinder starts, be subjected to the pressure of hydraulic oil with the one-way valve 7 of oil suction chamber UNICOM and open, the pressure oil that the enters oil hydraulic cylinder one-way valve of flowing through promotes piston motion, has solved piston and can not produce the slow or difficult phenomenon of moving because of thrust is not enough, cause breakout pressure too high.Piston is when entering buffer area, and one-way valve 7 seals, and the oil of buffer cavity rises compensator or trimmer pressure through the buffering modulating valve, makes the piston retarding braking, reaches the requirement of buffering.Auxiliary oil channel 6 is open-minded, and the hydraulic oil oil-feed speeds up, and has increased the Driving force of hydraulic oil to piston, has guaranteed that also the breakout pressure of hydraulic oil can be not too high.When the starting of oil hydraulic cylinder, open and close during buffering, thereby reach the effect of buffering.
When with the piston of load when arriving stroke terminal, a part of pressure oil returns oil back chamber from auxiliary oil channel 6 through the throttle orifice of buffering modulating valve 8 in the oil back chamber, and piston is formed the back pressure buffering, makes the piston retarding braking.Buffering modulating valve 8 is regulated throttle orifice according to the loading condition of oil hydraulic cylinder, with the size of control compensator or trimmer pressure, thereby reaches optimum cushioning effect.
One-way valve 7 makes that with the acting in conjunction of buffering modulating valve 8 operation of oil hydraulic cylinder is more steady reliable.
Claims (6)
1. oil hydraulic cylinder damping device, it is characterized in that: comprise the cushion collar (5) on end cap (1) or the one-way valve (7) on the cylinder bottom (3), buffering modulating valve (8) that is fixedly mounted on oil hydraulic cylinder and the piston rod (9) that is sleeved on oil hydraulic cylinder, the interior edge face of end cap of oil hydraulic cylinder (1) and cylinder bottom (3) offers buffering trepanning (10), during stroke terminal, cushion collar (5) and buffering trepanning (10) Spielpassung; It is gentle to modulating valve mounting hole (12) to have one-way valve mounting hole (11) on end cap of oil hydraulic cylinder (1) or the cylinder bottom (3), one-way valve (7) is fixedly mounted in the one-way valve mounting hole (11), buffering modulating valve (8) is fixedly mounted in the buffering modulating valve mounting hole (12), one-way valve mounting hole (11) is gentle all to communicate with buffering trepanning (10) towards modulating valve mounting hole (12), end cap of oil hydraulic cylinder (1) or cylinder bottom (3) are gone up in buffering trepanning (10) periphery two auxiliary oil channels (6), the interior edge face of auxiliary oil channel (6) one end go sides lids (1) or cylinder bottom (3), logical one-way valve mounting hole (11) of the other end of auxiliary oil channel (6) or buffering modulating valve mounting hole (12).
2. oil hydraulic cylinder damping device according to claim 1, it is characterized in that: described one-way valve (7) is a straight check valve, the one-way valve valve body (13) that comprises the hollow bolt shape, one-way valve valve body (13) and one-way valve mounting hole (11) screw-thread fit, exhaust plug (7-1) and spring (14) also are housed in the one-way valve valve body (13), in the one-way valve mounting hole (11) of spring (14) one ends steel ball (15) is housed, spring (14) one ends are against exhaust plug (7-1), the other end is against steel ball (15), exhaust hole (16) is arranged on the exhaust plug (7-1), exhaust passage (18) is arranged on the bleeder screw (17), near on the periphery of bolt hexagon-head, the other end leads to the exhaust hole (16) of exhaust plug (7-1) to exhaust passage (18) one end openings at bleeder screw (17).
3. oil hydraulic cylinder damping device according to claim 1, it is characterized in that: described buffering modulating valve (8) comprises the buffering modulating valve valve body (19) of hollow bolt shape, buffering modulating valve valve body (19) and buffering modulating valve mounting hole (12) screw-thread fit, buffering regulation valve core (20) is housed in the buffering modulating valve valve body (19), one end of buffering regulation valve core (20) is a conical surface that is resisted against the step place that buffering modulating valve mounting hole (12) communicates with buffering trepanning (10), the other end of buffering regulation valve core (20) and locking nut (21) screw-thread fit that abuts against the hexagon-head that cushions modulating valve valve body (19).
4. oil hydraulic cylinder damping device according to claim 1, it is characterized in that: one-way valve (7) is gentle to be installed in end cap (1) or cylinder bottom (3) and to become the one-way valve mounting hole (11) of 90 ° of directions gentle in modulating valve mounting hole (12) with hydraulic fluid port by the correspondence that is threaded respectively towards modulating valve (8), and one-way valve (7) is 180 ° with the center line angle of buffering modulating valve (8).
5. oil hydraulic cylinder damping device according to claim 2, it is characterized in that: the hexagon-head place of described straight check valve valve body (13) is with first seal ring (22) that prevents that hydraulic oil from leaking, and is with second seal ring (23) that prevents that hydraulic oil from leaking on the bleeder screw (17).
6. oil hydraulic cylinder damping device according to claim 3, it is characterized in that: the hexagon-head place of described buffering modulating valve valve body (19) is with the 3rd seal ring (24) that prevents that hydraulic oil from leaking, and the middle part of buffering regulation valve core (20) also is with the 4th seal ring (25) that prevents that hydraulic oil from leaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202790083U CN201747698U (en) | 2010-08-03 | 2010-08-03 | Cushioning device for hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202790083U CN201747698U (en) | 2010-08-03 | 2010-08-03 | Cushioning device for hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747698U true CN201747698U (en) | 2011-02-16 |
Family
ID=43582377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202790083U Expired - Lifetime CN201747698U (en) | 2010-08-03 | 2010-08-03 | Cushioning device for hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747698U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155468A (en) * | 2011-04-27 | 2011-08-17 | 三一重工股份有限公司 | Hydraulic cylinder and cushioning device of hydraulic cylinder |
| CN102367827A (en) * | 2011-09-19 | 2012-03-07 | 大连维乐液压制造有限公司 | Unidirectional adjustable buffer air evacuation valve of oil cylinder |
| CZ304721B6 (en) * | 2011-12-29 | 2014-09-10 | ÄŚVUT v Praze, Fakulta strojnĂ | Pressure cylinder |
| CN105221514A (en) * | 2015-09-29 | 2016-01-06 | 中国船舶重工集团公司第七一九研究所 | A kind of integrated hydraulic cylinder with bidirection press safety protection |
| CN110131235A (en) * | 2019-05-27 | 2019-08-16 | 燕山大学 | A kind of novel hydraulic support cylinder structure |
| CN110500427A (en) * | 2019-08-24 | 2019-11-26 | 浙江创越矿业科技有限公司 | A kind of hydraulic control one-way valve for capableing of quick draining |
| CN111288039A (en) * | 2020-05-07 | 2020-06-16 | 江苏恒立液压股份有限公司 | Double-rod oil cylinder and engineering machinery with same |
| CN112727844A (en) * | 2020-12-30 | 2021-04-30 | 宋丙臣 | Hydraulic cylinder capable of preventing jamming from smoothly running |
-
2010
- 2010-08-03 CN CN2010202790083U patent/CN201747698U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155468A (en) * | 2011-04-27 | 2011-08-17 | 三一重工股份有限公司 | Hydraulic cylinder and cushioning device of hydraulic cylinder |
| CN102155468B (en) * | 2011-04-27 | 2013-07-03 | 三一重工股份有限公司 | Hydraulic cylinder and cushioning device of hydraulic cylinder |
| CN102367827A (en) * | 2011-09-19 | 2012-03-07 | 大连维乐液压制造有限公司 | Unidirectional adjustable buffer air evacuation valve of oil cylinder |
| CZ304721B6 (en) * | 2011-12-29 | 2014-09-10 | ÄŚVUT v Praze, Fakulta strojnĂ | Pressure cylinder |
| CN105221514A (en) * | 2015-09-29 | 2016-01-06 | 中国船舶重工集团公司第七一九研究所 | A kind of integrated hydraulic cylinder with bidirection press safety protection |
| CN110131235A (en) * | 2019-05-27 | 2019-08-16 | 燕山大学 | A kind of novel hydraulic support cylinder structure |
| CN110500427A (en) * | 2019-08-24 | 2019-11-26 | 浙江创越矿业科技有限公司 | A kind of hydraulic control one-way valve for capableing of quick draining |
| CN111288039A (en) * | 2020-05-07 | 2020-06-16 | 江苏恒立液压股份有限公司 | Double-rod oil cylinder and engineering machinery with same |
| CN112727844A (en) * | 2020-12-30 | 2021-04-30 | 宋丙臣 | Hydraulic cylinder capable of preventing jamming from smoothly running |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110216 |