CN204082765U - Auto lock oil cylinder - Google Patents
Auto lock oil cylinder Download PDFInfo
- Publication number
- CN204082765U CN204082765U CN201420639168.2U CN201420639168U CN204082765U CN 204082765 U CN204082765 U CN 204082765U CN 201420639168 U CN201420639168 U CN 201420639168U CN 204082765 U CN204082765 U CN 204082765U
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- China
- Prior art keywords
- oil cylinder
- locking
- follower
- supporting sleeve
- piston rod
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- Fluid-Damping Devices (AREA)
Abstract
The utility model belongs to technical field of hydraulic pressure, and specifically disclose a kind of auto lock oil cylinder, it comprises oil cylinder body, locking device, drive unit and supporting sleeve.Supporting sleeve is fixed on the top of oil cylinder body, and the oil that stretches out that locking device is assemblied in oil cylinder body lacks on this external piston rod for locking reconciliation locking cylinder.Locking device is positioned at above supporting sleeve, and during oil cylinder locking, locking device is fitted in supporting sleeve top, and during the locking of oil cylinder solution, locking device is away from the top of supporting sleeve.Drive unit is fixed on supporting sleeve by adpting flange, carries out locking or separating locking operation for driving locking device.Oil cylinder of the present utility model can be locked oil cylinder after reaching target stroke, keeps stroke state for a long time, and structure of the present utility model is simple, parts are few, cost is low, failure rate is low.
Description
Technical field
The present invention relates to a kind of hydraulic pressure installation, particularly relate to and a kind ofly can keep the auto lock oil cylinder of its stroke by auto lock piston rod, belong to technical field of hydraulic pressure.
Background technique
Hydraulic jack is, in hydraulic pressure installation, hydraulic energy is converted to mechanical energy, realizes the actuator of straight reciprocating motion.In equipment application, usually require that oil lacks and reliably lock in any output services position, and long-time fixed position, and existing locking mode ensures with various descaling locking circuit.The locking mode of descaling locking circuit also exists leakage unavoidably, can not ensure the reliability of locking like this.For addressing this problem, the design a mechanism hydraulic cylinder locking device of formula of the present invention by the piston rod lock-bit of hydraulic jack, can stop on this position.
Summary of the invention
The object of the invention is for prior art Problems existing, providing a kind of can keep the auto lock oil cylinder of its stroke by auto lock piston rod.
Technological scheme of the present invention is to provide a kind of auto lock oil cylinder, and its designing points is, comprising:
Oil cylinder body 1, it comprises cylinder barrel 11, piston 12, piston rod 13, and one end of described piston rod 13 and piston 12 are fixed on and are placed in cylinder barrel 11, and the other end of piston rod 13 is positioned at outside cylinder barrel 11;
Locking device 2, it is connected for latching ram bar 13 with the other end be positioned at outside cylinder barrel 11 of piston rod 13;
Drive unit 3, the top of its fixed oil cylinder body 1, drive unit 3 is connected with locking device 2 for driving locking device 2 to carry out locking or separating locking operation.
Oil cylinder can be locked by locking device, and keep stroke state for a long time after arriving range demands by hydraulic jack of the present invention.The present invention also has the following technological scheme improved further.
Further, described oil cylinder body 1 also comprises top end cover 14 and bottom cover 16, and top end cover 14 is fixed on the top of cylinder barrel 11, and bottom cover 16 is fixed on the bottom of cylinder barrel 11; The other end of described piston rod 13 stretches out in outside cylinder barrel 11 through top end cover 14 and is also connected with top end cover 14 slipper seal, the outer side surface of the described piston rod 13 stretched out in outside cylinder barrel 11 is provided with locking outside thread 23, and top end cover 14 upper end is fixed one and is enclosed within supporting sleeve 4 on piston rod 13.
Further, described locking device 2 comprises the driving wheel 21 and follower 22 that are connected, the middle part of follower 22 is provided with through hole, through hole inner side surface is provided with and the locking internal thread 24 of locking outside thread 23 and matching, and follower 22 is sleeved on there is the one end with locking outside thread 23 and is positioned at the top of supporting sleeve 4 of piston rod 13.
Further, the side of described driving wheel 21 is arranged helical groove, side arranges groove to follower 22, in the helical groove of described driving wheel 21 and the groove of follower 22, drivign belt is installed.
Further, the outer side surface of described driving wheel 21 and follower 22 is respectively equipped with the gear matched, driving wheel 21 and follower 22 are by described meshed transmission gear.
Further, described drive unit 3 comprises oil hydraulic motor or drive motor, and the output shaft of described oil hydraulic motor or drive motor is coaxially connected with driving wheel 21.
Further, the described length of driving wheel 21 and the stroke of oil cylinder match.
Further, described drive unit 3 also comprises speed reducer, and the output shaft of described oil hydraulic motor or drive motor is connected with driving wheel 21 through speed reducer.
Further, disc type bearing is provided with between described follower 22 and supporting sleeve 4.
Hydraulic jack of the present invention carries out locking operation to oil cylinder after arriving target stroke.The mode of locking operation is that drive unit drives driving wheel to rotate, and driving wheel drives follower rotary motion, and follower moves to supporting sleeve direction, and be fitted in the upper end of supporting sleeve, namely lock oil cylinder, do not need to supply hydraulic oil, oil cylinder also can keep stroke state for a long time.Before reverse direction actuation oil cylinder, first carry out solution locking operation to oil cylinder, separating locking mode of operation is that device drives driving wheel counterrotating, driving wheel drives follower counter rotational movement, follower to away from the motion of supporting sleeve direction, and away from the upper end of supporting sleeve, namely carries out to oil cylinder understandings and locks.
Beneficial effect
Locking cylinder, keep stroke state, by the piston rod outside cylinder barrel arranging locking outside thread, arranging at follower middle through-hole and lock the locking internal thread that outside thread matches and the supporting sleeve being fixed on oil cylinder top being positioned at, follower assembling on the piston rod, rotary drive is taken turns, make it shift to or move apart supporting sleeve direction, realizing the locking operation to oil cylinder or solution locking operation.
The structure of locking device is simple, and parts are few, and cost is low, failure rate is low.
Accompanying drawing explanation
Fig. 1 cross-sectional schematic of the present invention.
In figure, 1-oil cylinder body, 11-cylinder barrel, 12-piston, 13-piston rod, 14-top end cover, 16-bottom cover, 2-locking device, 21-driving wheel, 22-follower, 23-locks outside thread, and 24-locks internal thread, 3-drive unit, 4-supporting sleeve.
Embodiment
In order to illustrate technological scheme of the present invention and technical purpose, below in conjunction with the drawings and the specific embodiments, the present invention is described further.
As shown in Figure 1, a kind of auto lock oil cylinder of the present invention, comprises oil cylinder body 1, locking device 2, drive unit 3 and supporting sleeve 4.Supporting sleeve 4 adopts the top being bolted to oil cylinder body 1, and locking device 2 is assemblied in and is built in oil cylinder body 1 and stretches out on the piston rod 13 outside cylinder barrel 11, and is positioned at the top of supporting sleeve 4; Drive unit 3 is adopted by adpting flange and is bolted on supporting sleeve 4, and drive unit 3 is connected with locking device 2, drives locking device 2 pairs of oil cylinders and carries out locking operation or separate locking operation.
Wherein, oil cylinder body 1, it comprises cylinder barrel 11, piston 12, piston rod 13, top end cover 14 and bottom cover 16.Top end cover 14 adopts the top being bolted to cylinder barrel 11, and bottom cover 16 adopts the bottom being bolted to cylinder barrel 11.The other end of described piston rod 13 stretches out in outside cylinder barrel 11 through top end cover 14, and between stopper rod 13 and top end cover 14, slipper seal connects, and adopts seal ring seal.The outer side surface of the described piston rod 13 stretched out in outside cylinder barrel 11 is provided with locking outside thread 23, and the length of locking outside thread 23 is consistent with the stroke of oil cylinder.Supporting sleeve 4 is sleeved on piston rod 13, and employing is bolted on top end cover 14.Supporting sleeve 4 side is provided with multiple lug with through hole for being fixedly connected with flange.
Locking device 2, comprise driving wheel 21 and follower 22, the middle part of follower 22 is provided with through hole, and be provided with in through hole and the locking internal thread 24 of locking outside thread 23 and matching, follower 22 coordinates the one end having locking outside thread 23 being arranged on piston rod 13.When being in locking state, follower 22 is fitted in the upper-end surface of supporting sleeve 4; When being in solution locking state, follower 22 transports out of the upper-end surface of supporting sleeve 4.The outer side surface of driving wheel 21 is provided with driving gear, and the outer side surface of follower 22 is provided with the driven gear matched with driving gear.Driving wheel 21 and follower 22 are by driving gear and driven gear engagement driving.In addition, driving wheel 21 and follower 22 also can pass through belt transmission, as arranged helical groove on the side of driving wheel 21, side arranges groove to follower 22, in the helical groove of described driving wheel 21 and the groove of follower 22, drivign belt is installed, realize transmission, carry out locking or separating locking operation.
Drive unit 3, it is fixed on supporting sleeve 4 by adpting flange, is positioned at the top of oil cylinder body 1.Drive unit 3 is oil hydraulic motor.Flange first through hole that supporting sleeve 4 can pass is provided with, first fastening through-hole matched with the lug through hole on supporting sleeve 4 of the multiple circle distribution be provided with between flange first through hole and flange periphery in the middle part of one end of adpting flange; Be provided with flange second through hole that drive unit 3 output shaft can pass in the middle part of the other end, between flange second through hole and flange periphery, be provided with second fastening through-hole for fixed drive device of multiple circle distribution.Adpting flange is sleeved on supporting sleeve 4, and the through hole on the lug on the first fastening through-hole and supporting sleeve 4 side adopts bolton, and oil hydraulic motor adopts bolt and the second fastener hole to fix, and the output shaft of oil hydraulic motor is coaxially connected with driving wheel.Drive unit 3 also can be drive motor, and the output shaft of drive motor is connected with driving wheel 21.In addition, the output shaft of oil hydraulic motor or drive motor also can be connected with driving wheel 21 through speed reducer.
Hydraulic jack of the present invention, after reaching target stroke, carries out locking operation to oil cylinder.The mode of locking operation is the oil-feed direction of hydraulic control motor, fluid motor-driven driving wheel rotates, driving wheel drives follower rotary motion, follower moves to supporting sleeve direction, and be fitted in the upper end of supporting sleeve, namely lock oil cylinder, do not need to supply hydraulic oil, oil cylinder also can keep stroke state for a long time.Before reverse direction actuation oil cylinder, first solution locking operation is carried out to oil cylinder, separate the oil-feed direction that locking mode of operation is hydraulic control motor, the counterrotating of fluid motor-driven driving wheel, driving wheel drives follower counter rotational movement, follower to away from the motion of supporting sleeve direction, and away from the upper end of supporting sleeve, namely carries out to oil cylinder understandings and locks.
Compared to the prior art, the present invention has following progressive:
1) locking cylinder, keep stroke state, by the piston rod outside cylinder barrel arranging locking outside thread, arranging at follower middle through-hole and lock the locking internal thread that outside thread matches and the supporting sleeve being fixed on oil cylinder top being positioned at, follower assembling on the piston rod, rotary drive is taken turns, make it shift to or move apart supporting sleeve direction, realizing the locking operation to oil cylinder or solution locking operation.
2) structure of locking device is simple, and parts are few, and cost is low, failure rate is low.
More than show and describe basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and application claims protection domain is defined by appending claims, specification and equivalent thereof.
Claims (9)
1. an auto lock oil cylinder, is characterized in that, comprising:
Oil cylinder body (1), it comprises cylinder barrel (11), piston (12), piston rod (13), and one end of described piston rod (13) and piston (12) are fixed on and are placed in cylinder barrel (11), and the other end of piston rod (13) is positioned at cylinder barrel (11) outward;
Locking device (2), it is connected for latching ram bar (13) with cylinder barrel (11) the other end outward that is positioned at of piston rod (13);
Drive unit (3), the top of its fixed oil cylinder body (1), drive unit (3) is connected with locking device (2) for driving locking device (2) to carry out locking or separating locking operation.
2. a kind of auto lock oil cylinder according to claim 1, it is characterized in that: described oil cylinder body (1) also comprises top end cover (14) and bottom cover (16), top end cover (14) is fixed on the top of cylinder barrel (11), and bottom cover (16) is fixed on the bottom of cylinder barrel (11); The other end of described piston rod (13) stretches out in cylinder barrel (11) through top end cover (14) and is also connected with top end cover (14) slipper seal outward, the described outer side surface stretching out in cylinder barrel (11) piston rod outward (13) is provided with locking outside thread (23), and top end cover (14) upper end is fixed one and is assemblied in supporting sleeve (4) on piston rod (13).
3. a kind of auto lock oil cylinder according to claim 2, it is characterized in that: described locking device (2) comprises the driving wheel (21) and follower (22) that are connected, the middle part of follower (22) is provided with through hole, be provided with inside through hole and the locking internal thread (24) of locking outside thread (23) and matching, follower (22) is sleeved on there is the one end with locking outside thread (23) and is positioned at the top of supporting sleeve (4) of piston rod (13).
4. a kind of auto lock oil cylinder according to claim 3, it is characterized in that: the side of described driving wheel (21) is arranged on helical groove, follower (22) side and groove is set, in the helical groove of described driving wheel (21) and the groove of follower (22), drivign belt is installed.
5. a kind of auto lock oil cylinder according to claim 3, is characterized in that: the outer side surface of described driving wheel (21) and follower (22) is respectively equipped with the gear matched, driving wheel (21) and follower (22) are by described meshed transmission gear.
6. a kind of auto lock oil cylinder according to claim 5, is characterized in that: described drive unit (3) comprises oil hydraulic motor or drive motor, the output shaft of described oil hydraulic motor or drive motor is coaxially connected with driving wheel (21).
7. a kind of auto lock oil cylinder according to claim 5, is characterized in that: the length of described driving wheel (21) and the stroke of oil cylinder match.
8. a kind of auto lock oil cylinder according to claim 6, is characterized in that: described drive unit (3) also comprises speed reducer, the output shaft of described oil hydraulic motor or drive motor is connected with driving wheel (21) through speed reducer.
9. a kind of auto lock oil cylinder according to claim 3, is characterized in that: be provided with disc type bearing between described follower (22) and supporting sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420639168.2U CN204082765U (en) | 2014-10-31 | 2014-10-31 | Auto lock oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420639168.2U CN204082765U (en) | 2014-10-31 | 2014-10-31 | Auto lock oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082765U true CN204082765U (en) | 2015-01-07 |
Family
ID=52175488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420639168.2U Expired - Fee Related CN204082765U (en) | 2014-10-31 | 2014-10-31 | Auto lock oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082765U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252980A (en) * | 2017-12-25 | 2018-07-06 | 上海建工集团股份有限公司 | A kind of foundation pit deformation Precise control device and control method |
| CN108518382A (en) * | 2018-06-19 | 2018-09-11 | 天津隆迪伟业液压设备有限公司 | A kind of hydraulic cylinder and assemble method |
-
2014
- 2014-10-31 CN CN201420639168.2U patent/CN204082765U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252980A (en) * | 2017-12-25 | 2018-07-06 | 上海建工集团股份有限公司 | A kind of foundation pit deformation Precise control device and control method |
| CN108252980B (en) * | 2017-12-25 | 2021-09-21 | 上海建工集团股份有限公司 | Foundation pit deformation fine control device and control method |
| CN108518382A (en) * | 2018-06-19 | 2018-09-11 | 天津隆迪伟业液压设备有限公司 | A kind of hydraulic cylinder and assemble method |
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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: 20150107 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |