CN104074833A - Locking device - Google Patents
Locking device Download PDFInfo
- Publication number
- CN104074833A CN104074833A CN201410297793.8A CN201410297793A CN104074833A CN 104074833 A CN104074833 A CN 104074833A CN 201410297793 A CN201410297793 A CN 201410297793A CN 104074833 A CN104074833 A CN 104074833A
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- Prior art keywords
- locking
- piston
- piston rod
- locking device
- cylinder
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Abstract
The invention discloses a locking device. The locking device comprises a cylinder barrel (4), a first cylinder cover (2), a second cylinder cover (6), a piston (1), a sliding block (5) and a piston rod (7), wherein the piston rod (7) is arranged at the terminal of the piston (1) and penetrates through the second cylinder cover (6), and the sliding block (5) is arranged among the piston (1), the piston rod (7) and the second cylinder cover (6). A surface on the piston rod (7) in contact with the sliding block (5) is of a conical structure. The locking and loosening actions of the locking device provided by the invention can be realized by hydraulic pressure drive, and a handle cannot be automatically loosed by stably locking a slope in case of unforeseen circumstances during work, such as power cut, without the need of considering the stability problem between a self-locking angle and hydraulic oil, therefore the safety can be ensured. A hydraulic cylinder of the locking device is mainly applied to the occasion of a short operating stroke needing to stably clamp; meanwhile, the hydraulic cylinder can be applicable to the occasion of a long operating stroke, especially applicable to the locking occasion of small equipments.
Description
Technical field
The invention belongs to the locking device of hydraulic machinery technical field, particularly a kind of Driven by Hydraulic Cylinder.
Background technique
Oil hydraulic cylinder is the actuating device of hydraulic driving system, and it is by being connected with various mechanical structure, thereby realizes the straight line motion of multiple mechanical mechanism, the driving that swings and rotatablely move.While conventionally carrying out the design of lockup equipment of mechanical structure, need to consider the size of Self-locking angle, if the Self-locking angle of design is improper, just can not realize the locking of mechanism.
Clamp device is the vitals of realizing automatic operation, the important composition parts of the machineries such as heavy machine tool, grinding machine, boring drilling and milling machine, machining center, flexible production line, in lathe, automation industry, be widely used, its coupling mechanism force generally provides by Self-locking angle, oil hydraulic cylinder or the pneumatic cylinder etc. on screw thread, inclined-plane.
The locking of prior art adopts the self-locking device on screw thread or inclined-plane, self-locking angle that must be strict realizes self-locking, or need to have enough operating spaces, because the reason of processing technology may cause self-locking not firm, in situation for operating space restriction, cannot realize especially.The oil hydraulic cylinder or the pneumatic cylinder mode that adopt at present, due to hydraulic oil and compressed-air actuated character, can cause locking unstable, wayward, for the high occasion of required precision, more difficultly reaches requirement.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of locking device of Driven by Hydraulic Cylinder, and this device does not need to be connected with complicated mechanical structure, just can realize the clamping and stable locking of mechanical device, and its locking method is reliable.
A kind of locking device disclosed by the invention, comprises cylinder barrel, is arranged on first, second cylinder cap at cylinder barrel two ends and is arranged on the piston on cylinder barrel.This locking device also comprises slide block and piston rod, and piston rod is arranged on piston end and through the second cylinder cap, slide block is arranged between piston, piston rod and the second cylinder cap.
As the further improvement of technique scheme, the part at the face place contacting with slide block on described piston rod is cone structure.
As the further improvement of technique scheme, between described cylinder barrel and piston, seal ring is installed.
As further improving again of technique scheme, on described the second cylinder cap, offer turnover oilhole, on the first cylinder cap, offer turnover oilhole.
Hydraulic transmission is applied increasingly extensive in modern mechanical transmission, and that fluid pressure drive device has is simple in structure, volume is little, quality is light, can transmit huge power or high torque, be easy to realize the advantages such as overload protection.Oil hydraulic cylinder is that the execution in hydraulic transmission is put, and can match with various driving mechanisms, completes complicated mechanical motion, so be of wide application.Locking device locking of the present invention drives by hydraulic coupling with the realization of unclamping action, by inclined-plane, realize stable locking, do not need to consider the stability problem of self-locking angle and hydraulic oil, can guarantee to occur at work the fortuitous events such as power failure, handle of a knife can not get loose voluntarily, thereby guarantees Security.The oil hydraulic cylinder of locking device of the present invention is mainly used in the occasion that needs the stable short working stroke clamping, and goes for the occasion of long stroke simultaneously, is specially adapted to the locking occasion of mini-plant.
Accompanying drawing explanation
Fig. 1 is locking device releasing orientation schematic diagram of the present invention;
Fig. 2 is locking device locking state schematic diagram of the present invention;
Fig. 3 is that slide block contacts schematic diagram with piston, piston rod and the second cylinder cap.
Embodiment
Below in conjunction with accompanying drawing, a kind of locking device that the present invention is proposed is elaborated.
As shown in Figure 1,2 and 3, locking device disclosed by the invention, comprises cylinder barrel 4, is arranged on first, second cylinder cap 2,6 at cylinder barrel 4 two ends and is arranged on the piston 1 on cylinder barrel 4, between cylinder barrel 4 and piston 1, seal ring 3 is installed.On described the second cylinder cap 6, offer turnover oilhole 8, on the first cylinder cap 2, offer turnover oilhole 9.This locking device also comprises slide block 5 and piston rod 7, and piston rod 7 is arranged on piston 1 end and through the second cylinder cap 6, slide block 5 is arranged between piston 1, piston rod 7 and the second cylinder cap 6, and the part at the face place contacting with slide block 5 on piston rod 7 is cone structure.
The turnover oilhole 9 of hydraulic oil from the first cylinder cap 2 enters and acts on piston 1 one side end faces, promoting piston moves right in the axial direction, force slide block 5 radial contraction, the pulling force that 5 pairs of piston rods of slide block 7 produce to the first cylinder cap 2 directions, piston rod 7 drives the fixture being connected with piston rod 7 to left movement, thereby realize the locking action of locking device. the turnover oilhole 8 on hydraulic oil the second cylinder cap 6 enters and acts on piston 1 opposite side end face and piston rod 7 away from that side of piston 1, the pressure that piston 1 is produced to the first cylinder cap 2 directions, slide block 5 is in radial expansion, hydraulic coupling promotes piston rod 7 to the second cylinder cap 6 directions simultaneously, thereby piston rod 7 drives clamp device to move right, realize unclamping of locking device.Piston rod 7 adopts cone structure with the part at the surface of contact place of slide block 5, in locking state, due to the interaction between piston 1, piston rod 7 and slide block 5, guaranteed that piston rod is accurately clamped and not loosening, this cone structure can be in the self-locking of clamped position forward.Because clamp device is in self-locking shape, so do not need to apply its clamped condition of extra clamping force #, only in the situation that oppositely exerting pressure, just can not unclamp, thereby clamp, can not become flexible or self falling, guarantee normal, the safe handling of machinery.
Claims (4)
1. a locking device, comprise cylinder barrel (4), be arranged on first, second cylinder cap (2,6) at cylinder barrel (4) two ends and be arranged on the piston (1) on cylinder barrel (4), it is characterized in that: also comprise slide block (5) and piston rod (7), piston rod (7) is arranged on piston (1) end and through the second cylinder cap (6), slide block (5) is arranged between piston (1), piston rod (7) and the second cylinder cap (6).
2. according to the locking device shown in claim 1, it is characterized in that: the part at the upper face place contacting with slide block (5) of described piston rod (7) is cone structure.
3. according to the locking device shown in claim 2, it is characterized in that: between described cylinder barrel (4) and piston (1), seal ring (3) is installed.
4. according to the locking device shown in claim 3, it is characterized in that: on described the second cylinder cap (6), offer turnover oilhole (8), on the first cylinder cap (2), offer turnover oilhole (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410297793.8A CN104074833A (en) | 2014-06-29 | 2014-06-29 | Locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410297793.8A CN104074833A (en) | 2014-06-29 | 2014-06-29 | Locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104074833A true CN104074833A (en) | 2014-10-01 |
Family
ID=51596349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410297793.8A Pending CN104074833A (en) | 2014-06-29 | 2014-06-29 | Locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104074833A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883134A (en) * | 2021-09-29 | 2022-01-04 | 东风本田汽车有限公司 | Part positioning and connecting device and positioning and connecting method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3317487A1 (en) * | 1983-05-13 | 1984-11-15 | Gabrie, Duje Welter, 5170 Jülich | Positive locking system for pistons of pressure-medium cylinders |
| GB2134983B (en) * | 1983-01-31 | 1986-09-24 | Koomey Blowout Preventers Inc | Fluid operated, axially reciprocating actuator |
| US6318237B1 (en) * | 1999-03-05 | 2001-11-20 | MüLLER HANS | Arrangement for a lock cylinder for a blocking cylinder |
| CN1439080A (en) * | 2000-06-27 | 2003-08-27 | 液压产品系统有限公司 | Double acting hydraulic cylinder with axial locking device |
| CN201827168U (en) * | 2010-10-20 | 2011-05-11 | 北京信息科技大学 | Hydraulic cylinder |
| CN102367822A (en) * | 2011-10-20 | 2012-03-07 | 大连橡胶塑料机械股份有限公司 | Latch oil cylinder device |
| CN203948371U (en) * | 2014-06-29 | 2014-11-19 | 南京蒙福液压机械有限公司 | A kind of locking device |
-
2014
- 2014-06-29 CN CN201410297793.8A patent/CN104074833A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2134983B (en) * | 1983-01-31 | 1986-09-24 | Koomey Blowout Preventers Inc | Fluid operated, axially reciprocating actuator |
| DE3317487A1 (en) * | 1983-05-13 | 1984-11-15 | Gabrie, Duje Welter, 5170 Jülich | Positive locking system for pistons of pressure-medium cylinders |
| US6318237B1 (en) * | 1999-03-05 | 2001-11-20 | MüLLER HANS | Arrangement for a lock cylinder for a blocking cylinder |
| CN1439080A (en) * | 2000-06-27 | 2003-08-27 | 液压产品系统有限公司 | Double acting hydraulic cylinder with axial locking device |
| CN201827168U (en) * | 2010-10-20 | 2011-05-11 | 北京信息科技大学 | Hydraulic cylinder |
| CN102367822A (en) * | 2011-10-20 | 2012-03-07 | 大连橡胶塑料机械股份有限公司 | Latch oil cylinder device |
| CN203948371U (en) * | 2014-06-29 | 2014-11-19 | 南京蒙福液压机械有限公司 | A kind of locking device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883134A (en) * | 2021-09-29 | 2022-01-04 | 东风本田汽车有限公司 | Part positioning and connecting device and positioning and connecting method |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141001 |