CN103362896A - Safe locking device suitable for hydraulic oil cylinder - Google Patents
Safe locking device suitable for hydraulic oil cylinder Download PDFInfo
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- CN103362896A CN103362896A CN2013103103931A CN201310310393A CN103362896A CN 103362896 A CN103362896 A CN 103362896A CN 2013103103931 A CN2013103103931 A CN 2013103103931A CN 201310310393 A CN201310310393 A CN 201310310393A CN 103362896 A CN103362896 A CN 103362896A
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- piston
- lock
- locking device
- hydraulic jack
- safe locking
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Abstract
The invention discloses a safe locking device suitable for a hydraulic oil cylinder. The safe locking device comprises a braking locking cylinder body, a lock sleeve, a compression piston, a spring set and an unlocking oil way, wherein both ends of the cylinder body are respectively provided with an unlocking end cover and a braking end cover; central holes in the unlocking end cover and the braking end cover are matched with a piston rod through motive seal ; a brake spring is arranged between the braking end cover and the locking cylinder body; the unlocking end cover is provided with the unlocking oil way; a locking piston is arranged between the brake spring and the unlocking oil way; and the lock sleeve is arranged between the locking piston and the piston rod through clearance fit. The safe locking device adopts a mechanical-hydraulic linkage structure, namely mechanical force is utilized during locking, and hydraulic force is utilized during unlocking, so that locking and unlocking can be switched in real time. The safe locking device is compact in structure, simple and convenient to operate, stable and reliable to work, can effectively lock the working position of the hydraulic oil cylinder in real time, and meets the operating requirements of oil cylinder output position in special workplaces.
Description
Technical field
The invention belongs to the art of power transmission field, further belong to hydraulic transmission utensil technical field, be specifically related to a kind of compact structure, the safe locking device that is suitable for hydraulic jack easy and simple to handle.
Background technique
Oil hydraulic cylinder is most important executive component in the hydraulic system, and it converts hydraulic energy to mechanical energy, and matches with various driving mechanisms, finishes various mechanical motion.That oil hydraulic cylinder has is simple in structure, High power output, stable and reliable for performance, the characteristics such as working service is convenient, is widely used in mechanically various.In the practical application of hydraulic jack, in some Special use situation or mechanism, after hydraulic cylinder piston rod reaches certain position, be to allow anything but to move, if mobile, can cause mechanism's cisco unity malfunction, even cause security incident.Such as the jib lubbing mechanism oil cylinder of truck crane, in the process that lifting appliance is installed, often to stay for some time at a certain height, in order to equipment is adjusted, if this moment can not locked position, be very dangerous.The locking of the oil hydraulic cylinder outgoing position of prior art is to adopt hydraulic lock, the defective of the method is unstable properties, sometimes electric meeting is out of order, or pipeline leakage causes system pressure to descend, in this case, hydraulic lock will be lost locking function, can't guarantee that the outgoing position of piston rod is constant, brings potential safety hazard to production.For this reason, develop a kind of compact structure, safe and reliable, easy to operate, the safe locking device that can effectively be suitable for hydraulic jack is the key that addresses this problem.
Summary of the invention
The object of the present invention is to provide a kind of compact structure, easy and simple to handle, working stability is suitable for the safe locking device of hydraulic jack reliably.
Purpose of the present invention is achieved in that and comprises the braking lock cylinder body, lock sleeve, and clamping piston, cluster spring and release oil circuit, the two ends of described cylinder body arrange respectively release end cap and braking end cap, and both center holes cooperate with the piston rod motive sealing; Between described braking end cap and the locking cylinder body brake spring is set; On the described release end cap release oil circuit is set, between brake spring and the release oil circuit lock piston is set, lock sleeve is set between lock piston and the piston rod movingly.
The present invention adopts the mechanical-hydraulic linkage structure, namely utilizes mechanical force when locking, utilizes hydraulic coupling during release.So that locking can realize instant conversion with release.When needing locking, release oil circuit with no pressure, lock piston moves to the release end under the effect of mechanical force, makes the lock sleeve contraction deformation, embraces piston rod, lock piston bar position; Otherwise, when needing release, the oil-feed of release oil circuit, hydraulic coupling promotion lock piston overcomes spring force and moves to keyed end, and the effect on inclined-plane is unclamped lock sleeve, and piston rod can move freely.Compact structure of the present invention, easy and simple to handle, working stability is reliable, can immediately effectively lock the hydraulic jack working position, satisfies the usage requirement of particular job occasion oil cylinder outgoing position.
Description of drawings
Fig. 1 is overall structure schematic representation of the present invention;
Fig. 2 is working state schematic representation of the present invention;
Among the figure: 1-braking lock cylinder body, the 2-lock sleeve, the 3-lock piston, the 4-cluster spring, 5-release oil circuit, 6-release end cap, 7-brakes end cap, 8-working clearance, 9-master hydraulic cylinder, 10-piston rod.
Embodiment
The invention will be further described below in conjunction with accompanying drawing, but never in any form the present invention is limited, and any conversion based on training centre of the present invention is done all falls into protection domain of the present invention.
As shown in Figure 1, the present invention includes braking lock cylinder body 1, lock sleeve 2, clamping piston 3, cluster spring 4 and release oil circuit 5, the two ends of described cylinder body 1 arrange respectively release end cap 6 and braking end cap 7, and both center holes cooperate with the piston rod motive sealing; Between described braking end cap 7 and the locking cylinder body 1 brake spring 4 is set; On the described release end cap 6 release oil circuit 5 is set, between brake spring 4 and the release oil circuit 5 lock piston 3 is set, lock sleeve 2 is set between lock piston 3 and the piston rod movingly.
Described lock sleeve 2 is the pawl type locking mechanism, and its inner ring surface and piston rod 10 are movingly; Its outer ring surface and lock piston 3 are slidingly matched.
The angle of inclination of both working surfaces of matching of described lock sleeve 2 and lock piston 3 adapts.
The working surface that described lock piston 3 cooperates with lock sleeve 2 is the plane of inclination.
Described lock piston 3 working surfaces tilt to the release end, and namely lock piston 3 narrows down to the release extreme direction.
The angle of inclination of described lock piston 3 working surfaces is 1 ~ 10 °.
Cooperate by seal ring seal respectively between described lock piston 3 and locking cylinder body 1, release end cap 6 and the locking end cap 7.
Described lock piston 3 middle part outer rims arrange guiding gutter, and piston middle part diameter is than the little 0.5 ~ 1mm of two ends diameter.
Between the oil outlet of described release oil circuit 5 and lock piston 3 end faces be set the working clearance.
The width of described working clearance is 1 ~ 5mm.
Described working spring 4 is Compress Spring.Described Compress Spring is leaf spring.
Described locking end cap 7 is " L " structure, and its long-armed ring cooperates with the piston rod slipper seal, and the galianconism end is sealed and matched with the locking cylinder ends, between long-armed ring and the locking cylinder body 1 working spring 4 is set.
Described lock piston 3 middle part outer rims arrange guiding gutter.
Working principle of the present invention and working procedure:
The present invention adopts the mechanical-hydraulic linkage structure, namely utilizes mechanical force when locking, utilizes hydraulic coupling during release, so that locking can realize instant conversion with release.When needing locking, release oil circuit with no pressure, lock piston moves to the release end under the effect of mechanical force, makes the lock sleeve contraction deformation, embraces piston rod, lock piston bar position; Otherwise, when needing release, the oil-feed of release oil circuit, hydraulic coupling promotion lock piston overcomes spring force and moves to keyed end, and the effect on inclined-plane is unclamped lock sleeve, and piston rod can move freely.
During main hydraulic jack work, first the present invention is carried out release, this moment, hydraulic oil entered cylinder body by the release hydraulic fluid port, action of hydraulic force is in the left end of clamping piston, make clamping piston overcome the mechanical force that cluster spring produces, clamping piston moves right, and lock sleeve is unclamped, piston rod can move freely, the pushing mechanism motion.
Arrive the position of needs when piston rod movement after, discharge the pressure of release mechanism this moment, clamping piston will be moved to the left under the promotion of cluster spring, make the lock sleeve distortion, because lock sleeve adopts tin bronze casting, and be processed into similar bird claw-like, so tightly embrace piston rod, lock piston bar position after the lock sleeve distortion.
Claims (10)
1. safe locking device that is suitable for hydraulic jack, comprise braking lock cylinder body (1), lock sleeve (2), clamping piston (3), cluster spring (4) and release oil circuit (5), it is characterized in that: the two ends of described cylinder body (1) arrange respectively release end cap (6) and braking end cap (7), and both center holes cooperate with the piston rod motive sealing; Between described braking end cap (7) and the locking cylinder body (1) brake spring (4) is set; Release oil circuit (5) is set on the described release end cap (6), between brake spring (4) and the release oil circuit (5) lock piston (3) is set, lock sleeve (2) is set between lock piston (3) and the piston rod movingly.
2. the safe locking device that is suitable for hydraulic jack according to claim 1, it is characterized in that: described lock sleeve (2) is the pawl type locking mechanism, and its inner ring surface and piston rod are movingly; Its outer ring surface and lock piston (3) are slidingly matched.
3. the safe locking device that is suitable for hydraulic jack according to claim 1 and 2 is characterized in that: the angle of inclination of both working surfaces of matching of described lock sleeve (2) and lock piston (3) adapts.
4. the safe locking device that is suitable for hydraulic jack according to claim 1 and 2, it is characterized in that: the working surface that described lock piston (3) cooperates with lock sleeve (2) is the plane of inclination, and its angle of inclination is 1 ~ 10 °.
5. the safe locking device that is suitable for hydraulic jack according to claim 1 and 2 is characterized in that: described lock piston (3) is with locking cylinder body (1), release end cap (6) and lock between the end cap (7) and cooperate by seal ring seal respectively.
6. the safe locking device that is suitable for hydraulic jack according to claim 1 and 2 is characterized in that: described lock piston (3) middle part outer rim arranges guiding gutter, and piston middle part diameter is than the little 0.5 ~ 1mm of two ends diameter.
7. the safe locking device that is suitable for hydraulic jack according to claim 1 is characterized in that: between the oil outlet of described release oil circuit (5) and lock piston (3) end face be set the working clearance.
8. according to claim 1 or the 7 described safe locking devices that are suitable for hydraulic jack, it is characterized in that: the width of working clearance is 1 ~ 5mm between the oil outlet of described release oil circuit (5) and lock piston (3) end face.
9. the safe locking device that is suitable for hydraulic jack according to claim 1, it is characterized in that: described working spring (4) is Compress Spring.
10. the safe locking device that is suitable for hydraulic jack according to claim 1, it is characterized in that: described locking end cap (7) is " L " structure, its long-armed ring cooperates with the piston rod slipper seal, the galianconism end is sealed and matched with the locking cylinder ends, between long-armed ring and the locking cylinder body (1) working spring (4) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310310393.1A CN103362896B (en) | 2013-07-23 | 2013-07-23 | A kind of safe locking device being suitable for hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310310393.1A CN103362896B (en) | 2013-07-23 | 2013-07-23 | A kind of safe locking device being suitable for hydraulic jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103362896A true CN103362896A (en) | 2013-10-23 |
| CN103362896B CN103362896B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310310393.1A Active CN103362896B (en) | 2013-07-23 | 2013-07-23 | A kind of safe locking device being suitable for hydraulic jack |
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| CN (1) | CN103362896B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675802A (en) * | 2015-02-15 | 2015-06-03 | 广东工业大学 | Self-locking friction-free fast-response balancing system |
| CN104818956A (en) * | 2015-04-30 | 2015-08-05 | 顾军锋 | Gate plate locking device of blowout preventer |
| CN107571096A (en) * | 2017-10-10 | 2018-01-12 | 台州厚进精密机械有限公司 | Aerobraking index dial |
| CN110043584A (en) * | 2019-04-29 | 2019-07-23 | 北京中金泰达电液科技有限公司 | A kind of high-precision low friction No leakage wind power yawing hydraulic braking cylinder |
| CN114278644A (en) * | 2022-01-05 | 2022-04-05 | 三一汽车制造有限公司 | Self-locking oil cylinder and operation machine |
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| US3643765A (en) * | 1968-10-24 | 1972-02-22 | Siegfried Hanchen | Clamping device for an axially moveable plunger shaft |
| US3907780A (en) * | 1973-01-15 | 1975-09-23 | Ici Ltd | Preparation of carbodiimide-containing isocyanates |
| DE8804418U1 (en) * | 1988-04-02 | 1988-05-19 | Sitema Gesellschaft Fuer Sicherheitstechnik Und Maschinenbau Mbh, 7500 Karlsruhe, De | |
| DE3707046A1 (en) * | 1987-03-05 | 1988-09-15 | Haenchen Kg Herbert | Clamping device for rods |
| DE4126897A1 (en) * | 1991-08-14 | 1993-02-18 | Rexroth Mannesmann Gmbh | Hydraulic clamp for vehicle rear wheel - has housing with clamping sleeve to control motion and cage assembly between sleeve and rod. |
| US20050087405A1 (en) * | 2003-10-27 | 2005-04-28 | Sitema Gmbh & Co. Kg | Locking device |
| CN202091294U (en) * | 2011-06-13 | 2011-12-28 | 天津市四方欧业液压机械有限公司 | Locking device for disc spring of oil cylinder piston |
| CN202251243U (en) * | 2011-09-08 | 2012-05-30 | 韶关市伟光液压油缸有限公司 | Disc spring force application locker |
| CN202811639U (en) * | 2012-09-14 | 2013-03-20 | 泸州市巨力液压有限公司 | Random displacement locking cylinder |
| CN203570753U (en) * | 2013-07-23 | 2014-04-30 | 云南兴长江实业有限公司 | Safe locking device applicable for hydraulic oil cylinder |
| EP3907780A1 (en) * | 2019-06-03 | 2021-11-10 | Contemporary Amperex Technology Co., Limited | Terminal protection device and battery module |
-
2013
- 2013-07-23 CN CN201310310393.1A patent/CN103362896B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3643765A (en) * | 1968-10-24 | 1972-02-22 | Siegfried Hanchen | Clamping device for an axially moveable plunger shaft |
| US3907780A (en) * | 1973-01-15 | 1975-09-23 | Ici Ltd | Preparation of carbodiimide-containing isocyanates |
| DE3707046A1 (en) * | 1987-03-05 | 1988-09-15 | Haenchen Kg Herbert | Clamping device for rods |
| DE8804418U1 (en) * | 1988-04-02 | 1988-05-19 | Sitema Gesellschaft Fuer Sicherheitstechnik Und Maschinenbau Mbh, 7500 Karlsruhe, De | |
| DE4126897A1 (en) * | 1991-08-14 | 1993-02-18 | Rexroth Mannesmann Gmbh | Hydraulic clamp for vehicle rear wheel - has housing with clamping sleeve to control motion and cage assembly between sleeve and rod. |
| US20050087405A1 (en) * | 2003-10-27 | 2005-04-28 | Sitema Gmbh & Co. Kg | Locking device |
| CN202091294U (en) * | 2011-06-13 | 2011-12-28 | 天津市四方欧业液压机械有限公司 | Locking device for disc spring of oil cylinder piston |
| CN202251243U (en) * | 2011-09-08 | 2012-05-30 | 韶关市伟光液压油缸有限公司 | Disc spring force application locker |
| CN202811639U (en) * | 2012-09-14 | 2013-03-20 | 泸州市巨力液压有限公司 | Random displacement locking cylinder |
| CN203570753U (en) * | 2013-07-23 | 2014-04-30 | 云南兴长江实业有限公司 | Safe locking device applicable for hydraulic oil cylinder |
| EP3907780A1 (en) * | 2019-06-03 | 2021-11-10 | Contemporary Amperex Technology Co., Limited | Terminal protection device and battery module |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675802A (en) * | 2015-02-15 | 2015-06-03 | 广东工业大学 | Self-locking friction-free fast-response balancing system |
| CN104818956A (en) * | 2015-04-30 | 2015-08-05 | 顾军锋 | Gate plate locking device of blowout preventer |
| CN107571096A (en) * | 2017-10-10 | 2018-01-12 | 台州厚进精密机械有限公司 | Aerobraking index dial |
| CN110043584A (en) * | 2019-04-29 | 2019-07-23 | 北京中金泰达电液科技有限公司 | A kind of high-precision low friction No leakage wind power yawing hydraulic braking cylinder |
| CN114278644A (en) * | 2022-01-05 | 2022-04-05 | 三一汽车制造有限公司 | Self-locking oil cylinder and operation machine |
| CN114278644B (en) * | 2022-01-05 | 2023-11-28 | 三一汽车制造有限公司 | Self-locking oil cylinder and working machine |
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|---|---|
| CN103362896B (en) | 2016-08-24 |
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