CN103362896B - A kind of safe locking device being suitable for hydraulic jack - Google Patents
A kind of safe locking device being suitable for hydraulic jack Download PDFInfo
- Publication number
- CN103362896B CN103362896B CN201310310393.1A CN201310310393A CN103362896B CN 103362896 B CN103362896 B CN 103362896B CN 201310310393 A CN201310310393 A CN 201310310393A CN 103362896 B CN103362896 B CN 103362896B
- Authority
- CN
- China
- Prior art keywords
- lock
- piston
- unblock
- braking
- end cap
- 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.)
- Active
Links
Abstract
The invention discloses a kind of safe locking device being suitable for hydraulic jack, including braking lock cylinder body, lock sleeve, lock piston, groups of springs and unblock oil circuit, the two ends of described cylinder body are respectively provided with unblock end cap and braking end cap, and both centre bores coordinate with piston rod movable sealing；Between described braking end cap and braking lock cylinder body, groups of springs is set；Unblock oil circuit is set on described unblock end cap, between groups of springs and unblock oil circuit, lock piston is set, move between lock piston and piston rod and be equipped with lock sleeve.The present invention uses mechanical-hydraulic linkage structure, is i.e. to utilize mechanical force in locking, utilizes hydraulic coupling during unblock.Make locking and can realize instant conversion with unlocking.Present configuration is compact, easy and simple to handle, stable and reliable in work, it is possible to instant locking hydraulic jack operating position effectively, meets the use requirement of particular job occasion oil cylinder outgoing position.
Description
Technical field
The invention belongs to art of power transmission field, belong to hydraulic drive utensil technical field further, be specifically related to a kind of compact conformation, the easy and simple to handle safe locking device being suitable for hydraulic jack.
Background technology
Hydraulic cylinder is most important executive component in hydraulic system, and hydraulic energy is converted into mechanical energy, and matches with various drive mechanisms, completes various mechanical movements by it.Hydraulic cylinder has the features such as simple in construction, High power output, stable and reliable for performance, working service be convenient, be widely used in various mechanically.In the actual application of hydraulic jack, in some Special use situation or mechanism, after hydraulic cylinder piston rod reaches certain position, it is absolutely not to allow to move, if mobile, mechanism's cisco unity malfunction can be caused, even cause security incident.Such as the jib lubbing mechanism oil cylinder of autocrane, during lifting appliance is installed, often to stay for some time at a certain height, in order to equipment is adjusted, if now can not latched position, be extremely dangerous.The locking of the hydraulic cylinder outgoing position of prior art is to use hydraulic lock, the defect of the method is unstable properties, the most electrically can be out of order, or pipeline leakage causes system pressure to decline, in this case, hydraulic lock will lose locking function, it is impossible to ensures that the outgoing position of piston rod is constant, brings potential safety hazard to production.To this end, develop a kind of compact conformation, safe and reliable, easy to operate, the safe locking device that can effectively be suitable for hydraulic jack is the key solving this problem.
Summary of the invention
It is an object of the invention to provide a kind of compact conformation, easy and simple to handle, the stable and reliable in work safe locking device being suitable for hydraulic jack.
The present invention purpose be realized in, including braking lock cylinder body, lock sleeve, lock piston, groups of springs, unblock oil circuit, the two ends of described braking lock cylinder body are respectively provided with unblock end cap and braking end cap, unlock central hole among end cap, braking end cap and coordinate with piston rod movable sealing；Described braking end cap is " L " structure, and its long armlet coordinates with piston rod slipper seal, and galianconism end seals with braking lock cylinder ends and coordinates, and arranges groups of springs between long armlet and braking lock cylinder body；On described unblock end cap, unblock oil circuit is set, between groups of springs and unblock oil circuit, lock piston is set, between lock piston and piston rod, the dynamic lock sleeve that is equipped with, arranges the working clearance between oil-out and the lock piston end face of unblock oil circuit, and the width of working clearance is 1 ~ 5mm；Described lock sleeve is the pawl type retaining mechanism of tin bronze casting, and lock sleeve inner ring surface is dynamic with piston rod to be coordinated, and lock sleeve outer ring surface is slidably matched with lock piston；The work surface that described lock piston coordinates with lock sleeve is inclined plane, and the angle of inclination of inclined plane is 1 ~ 10 °；In the middle part of described lock piston, outer rim arranges guiding gutter, and guiding gutter diameter is than the lock piston two ends little 0.5 ~ 1mm of diameter.
The present invention uses mechanical-hydraulic linkage structure, i.e. utilizes mechanical force when locking, utilizes hydraulic coupling during unblock.Make locking and can realize instant conversion with unlocking.When needing locking, unblock oil circuit is without pressure, and lock piston moves to unblock end under the effect of mechanical force, makes lock sleeve contraction distortion, embraces piston rod, lock piston bar position；Otherwise, when needing to unlock, unlocking oil circuit oil-feed, hydraulic coupling promotes lock piston to overcome spring force to move to keyed end, and the effect on inclined-plane makes lock sleeve unclamp, and piston rod can move freely.Present configuration is compact, easy and simple to handle, stable and reliable in work, it is possible to instant locking hydraulic jack operating position effectively, meets the use requirement of particular job occasion oil cylinder outgoing position.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention；
Fig. 2 is working state schematic representation of the present invention；
In figure: 1-braking lock cylinder body, 2-lock sleeve, 3-lock piston, 4-groups of springs, 5-unlocks oil circuit, and 6-unlocks end cap, and 7-brakes end cap, 8-working clearance, 9-main hydraulic cylinder, 10-piston rod.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings, but is any limitation as the present invention never in any form, based on present invention teach that any conversion made, each falls within scope.
As it is shown in figure 1, the present invention includes braking lock cylinder body 1, lock sleeve 2, lock piston 3, groups of springs 4 and unblock oil circuit 5, the two ends of described cylinder body 1 are respectively provided with unblock end cap 6 and braking end cap 7, and both centre bores coordinate with piston rod movable sealing；Between described braking end cap 7 and braking lock cylinder body 1, groups of springs 4 is set；Unblock oil circuit 5 is set on described unblock end cap 6, between groups of springs 4 and unblock oil circuit 5, lock piston 3 is set, move between lock piston 3 and piston rod and be equipped with lock sleeve 2.
Described lock sleeve 2 is pawl type retaining mechanism, and its inner ring surface is dynamic with piston rod 10 to be coordinated；Its outer ring surface is slidably matched with lock piston 3.
The angle of inclination of the work surface that described lock sleeve 2 matches with both lock piston 3 adapts.
The work surface that described lock piston 3 coordinates with lock sleeve 2 is inclined plane.
Described lock piston 3 works to tilt towards unblock end, i.e. lock piston 3 narrows to unlocking extreme direction.
The angle of inclination of described lock piston 3 work surface is 1 ~ 10 °.
Coordinated by seal ring seal respectively between described lock piston 3 with braking lock cylinder body 1, unblock end cap 6 and braking end cap 7.
In the middle part of described lock piston 3, outer rim arranges guiding gutter, and piston mid diameter than two ends diameter little 0.5 ~ 1mm.
Between oil-out and lock piston 3 end face of described unblock oil circuit 5, the working clearance is set.
The width of described working clearance is 1 ~ 5mm.
Described groups of springs 4 is compression spring.Described compression spring is flat spring.
Described braking end cap 7 is " L " structure, and its long armlet coordinates with piston rod slipper seal, and galianconism end coordinates with braking lock cylinder body 1 end seal, arranges groups of springs 4 between long armlet and braking lock cylinder body 1.
In the middle part of described lock piston 3, outer rim arranges guiding gutter.
The operation principle of the present invention and work process:
The present invention uses mechanical-hydraulic linkage structure, i.e. utilizes mechanical force when locking, utilizes hydraulic coupling during unblock so that locks and unlocks and can realize instant conversion.When needing locking, unblock oil circuit is without pressure, and lock piston moves to unblock end under the effect of mechanical force, makes lock sleeve contraction distortion, embraces piston rod, lock piston bar position；Otherwise, when needing to unlock, unlocking oil circuit oil-feed, hydraulic coupling promotes lock piston to overcome spring force to move to keyed end, and the effect on inclined-plane makes lock sleeve unclamp, and piston rod can move freely.
During the work of main hydraulic jack, first the present invention is unlocked, now hydraulic oil enters cylinder body by unlocking hydraulic fluid port, action of hydraulic force is in the left end of lock piston, making the mechanical force that lock piston overcomes groups of springs to produce, lock piston moves right, and makes lock sleeve unclamp, piston rod can move freely, and pushing mechanism moves.
When after piston rod movement to the position needed, now discharge the pressure of unlocking mechanism, lock piston will be moved to the left under the promotion of groups of springs, lock sleeve is made to deform, owing to lock sleeve uses tin bronze casting, and be processed into similar bird claw-like, so tightly embrace piston rod, lock piston bar position after lock sleeve deformation.
Claims (3)
1. the safe locking device being suitable for hydraulic jack, including braking lock cylinder body (1), lock sleeve (2), lock piston (3), groups of springs (4), unlock oil circuit (5), it is characterized in that: the two ends of described braking lock cylinder body (1) are respectively provided with unblock end cap (6) and braking end cap (7), unblock end cap (6), the centre bore of braking end cap (7) coordinate with piston rod (10) movable sealing；Described braking end cap (7) is " L " structure, and its long armlet coordinates with piston rod (10) slipper seal, and galianconism end coordinates with braking lock cylinder body (1) end seal, arranges groups of springs (4) between long armlet and braking lock cylinder body (1)；Unblock oil circuit (5) is set on described unblock end cap (6), between groups of springs (4) and unblock oil circuit (5), lock piston (3) is set, move between lock piston (3) and piston rod (10) and be equipped with lock sleeve (2), unlocking and arrange the working clearance (8) between oil-out and lock piston (3) end face of oil circuit (5), the width of working clearance (8) is 1 ~ 5mm；Described lock sleeve (2) is the pawl type retaining mechanism of tin bronze casting, and lock sleeve (2) inner ring surface is dynamic with piston rod (10) to be coordinated, and lock sleeve (2) outer ring surface is slidably matched with lock piston (3)；The work surface that described lock piston (3) coordinates with lock sleeve (2) is inclined plane, and the angle of inclination of inclined plane is 1 ~ 10 °；Described lock piston (3) middle part outer rim arranges guiding gutter, and guiding gutter diameter is than lock piston (3) the two ends little 0.5 ~ 1mm of diameter.
The safe locking device being suitable for hydraulic jack the most according to claim 1, is characterized in that: coordinated by seal ring seal respectively between described lock piston (3) with braking lock cylinder body (1), unblock end cap (6) and braking end cap (7).
The safe locking device being suitable for hydraulic jack the most according to claim 1, is characterized in that: described groups of springs (4) is compression spring.
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 CN103362896A (en) | 2013-10-23 |
| CN103362896B true CN103362896B (en) | 2016-08-24 |
Family
ID=49364951
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103362896B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675802B (en) * | 2015-02-15 | 2017-03-01 | 广东工业大学 | A kind of self-locking no rubs quick response balance 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 |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3707046A1 (en) * | 1987-03-05 | 1988-09-15 | Haenchen Kg Herbert | Clamping device for rods |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1804857B2 (en) * | 1968-10-24 | 1971-11-25 | Hänchen, Siegfried, 7304 Ruit | DEVICE FOR CLAMPING AN AXIALLY MOVABLE PISTON ROD |
| GB1397469A (en) * | 1973-01-15 | 1975-06-11 | Ici Ltd | Process for converting isocyanate groups to carbodiimide groups |
| 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. |
| DE10350225A1 (en) * | 2003-10-27 | 2005-05-19 | Sitema Gmbh & Co. Kg | Locking device |
-
2013
- 2013-07-23 CN CN201310310393.1A patent/CN103362896B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3707046A1 (en) * | 1987-03-05 | 1988-09-15 | Haenchen Kg Herbert | Clamping device for rods |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103362896A (en) | 2013-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103362896B (en) | A kind of safe locking device being suitable for hydraulic jack | |
| CN103362892B (en) | A kind of double acting high thrust output hydraulic pressure oil cylinder | |
| CN105402203A (en) | Oil cylinder tail end automatic lockup valve and hydraulic oil cylinder with oil cylinder tail end automatic lockup valve | |
| CN201636115U (en) | Mechanical self-locking hydraulic cylinder | |
| CN203570753U (en) | Safe locking device applicable for hydraulic oil cylinder | |
| CN107120333B (en) | The self-locking hydraulic cylinder being mounted on lifting device | |
| CN203453465U (en) | Sealing nut | |
| CN201377480Y (en) | Hydraulic cylinder locking device | |
| CN201090555Y (en) | Double-acting unloading buffer oil cylinder | |
| CN205225932U (en) | Terminal automatic locking valve of hydro -cylinder and hydraulic cylinder thereof | |
| CN202451514U (en) | Mechanical locking hydraulic cylinder | |
| CN106969007B (en) | Explosion-proof emergent Releasing loop | |
| CN107420371B (en) | The method of automatic moving when preventing hydraulic cylinder piston rod from working | |
| CN105712237A (en) | Hydraulic jack | |
| CN112065806B (en) | Hydraulic cylinder unloading structure | |
| CN202612248U (en) | Combined-type hydraulic cylinder | |
| CN204284065U (en) | Sealing locking hydraulic jack | |
| CN206754055U (en) | A kind of hydraulic cylinder with auto-lock function | |
| CN102367822B (en) | Latch oil cylinder device | |
| CN203230653U (en) | Double-acting rapid hydraulic cylinder | |
| CN203847483U (en) | Oil cylinder with braking structure | |
| CN202176576U (en) | Telescopic sleeve hydraulic cylinder sleeve position limit device | |
| CN202531543U (en) | Automatic locking device for hydraulic cylinder | |
| CN204267425U (en) | A kind of hydraulic jack with rapid pipe joint | |
| CN104613032A (en) | Irregularity self-adaptive loading device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |