CN101131170A

CN101131170A - Gas cylinder or oil cylinder with self-locking device

Info

Publication number: CN101131170A
Application number: CNA2006100304924A
Authority: CN
Inventors: 夏培根
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-26
Filing date: 2006-08-26
Publication date: 2008-02-27

Abstract

The present invention discloses one kind of air cylinder or oil cylinder with self-locking device. The air cylinder or oil cylinder includes one cylinder body, one piston rod inside the cylinder body, one cylinder cap, one piston fixed to one end of the piston rod, one lock connected to the end of the piston rod stretched beyond the cylinder cap, and one clamping slot in the outer edge of the cylinder cap. The air cylinder or oil cylinder has self-locking device in simple structure and good self-locking effect, and may be operated only in the presence of driving force caused by air or oil pressure, reaching no malfunction.

Description

The cylinder or the oil cylinder that have self-locking device

Technical field

The present invention relates to the pneumatic or Hydraulic actuator in the field of mechanical technique, especially a kind of cylinder or oil cylinder that has self-locking device.

Background technique

The cylinder of prior art or oil cylinder are under the state of pressure loading unloading, remain static, at this moment, if be subjected to the external force effect, passive displacement may occur, in many workplaces, this displacement does not allow to occur, relate in particular to the occasion of life safety, because the passive displacement meeting of cylinder or oil cylinder causes damage and even leads to a disaster to production.Although some cylinder or oil cylinder have also adopted such as methods such as solenoid valve self-locking, spring self-lockings, but still there is the defective that self-locking strength is limited, can not open synchronously with active force.

Summary of the invention

A kind of cylinder or oil cylinder that has self-locking device of providing at the deficiencies in the prior art is provided, and it only just can be opened under the effect of active force, not influenced by external force, and simple in structure, and self-locking is effective.

The concrete technological scheme that realizes the object of the invention is:

A kind of cylinder or oil cylinder that has self-locking device comprises cylinder body, lock body, is provided with piston rod in the cylinder body, and cylinder body is provided with cylinder cap, and an end of piston rod is fixed with piston, the other end is passed and the lock body socket by cylinder cap; The cylinder cap outer rim is provided with draw-in groove.

Described lock body is made up of lock, shift fork, slide block, latch hook, spring, bearing pin, flange shaft, and slide block is fixed on the termination of piston rod, and shift fork is fixed on the slide block both sides by bearing pin, is provided with driving lever between two shift forks; Flange shaft is inserted in shift fork, the lock and fixes, and latch hook is articulated on the lock by bearing pin, and spring is located between lock, the latch hook.

The present invention only just can open under the effect of active force, not influenced by external force, and simple in structure, and self-locking is effective.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 is the left view of Fig. 1

Fig. 3 is the A-A plan view of Fig. 1

Embodiment

Consult Fig. 1, Fig. 2, Fig. 3, the present invention is work like this: cylinder body 1 is articulated in fixed end by hanger 6, and load-bearing component is connected in flange shaft 10.

The self-locking device opening procedure: pressure medium enters the top of piston 3, promote piston 3, piston rod 4 begins to move down, the slide block 8 that is connected in piston rod 4 terminations is positioned at lock 16 and slides, because shift fork 7 is fixed on the both sides of slide block 8 by bearing pin 14, be connected with driving lever 11 between two shift forks 7, so slide block 8, shift fork 7, driving lever 11 moves down simultaneously with piston rod 4, driving lever 11 compresses latch hook 9 and rotates around bearing pin 12, break away from the draw-in groove 15 of the top of latch hook 9 from the cylinder cap 2, bottom pressuring spring 13, because of slide block 8, leave the gap between shift fork 7 and the flange shaft 10, so flange shaft 10 does not move before latch hook 9 breaks away from draw-in groove 15; When piston rod 4 continued to move down, flange shaft 10 was touched in the bottom of slide block 8, flange shaft 10 by slide block 8 with lock 16 lockings and drive load-bearing component and begin to move.

Self-locking device closes closed procedure: pressure medium enters the bottom of piston 3, promotion piston 3, piston rod 4 begin to move up, the slide block 8 that is connected in piston rod 4 terminations is positioned at the both sides that lock 16 slides, is fixed on slide block 8 owing to shift fork 7 by bearing pin 14, be connected with driving lever 11 between two shift forks 7, therefore slide block 8, shift fork 7, driving lever 11 move up simultaneously with piston rod 4, and driving lever 11 loosens latch hook 9, and the slippage that makes progress along the inclined-plane of latch hook 9 tops enters draw-in groove 15, under the effect of spring 13, realize self-locking.

The present invention is can't open promptly can not produce misoperation under the state of no air pressure or oil pressure, is just can open under the effect of active force in that air pressure or oil pressure are arranged only, and self-locking is effective.

Claims

1. a cylinder or oil cylinder that has self-locking device, it is characterized in that it comprises cylinder body (1), lock body (5), be provided with piston rod (4) in the cylinder body (1), cylinder body (1) is provided with cylinder cap (2), and an end of piston rod (4) is fixed with piston (3), the other end is passed and lock body (5) socket by cylinder cap (2); Cylinder cap (2) outer rim is provided with draw-in groove (15).

2. cylinder or the oil cylinder that has self-locking device according to claim 1, it is characterized in that described lock body (5) is made up of lock (16), shift fork (7), slide block (8), latch hook (9), spring (13), bearing pin (12), flange shaft (10), slide block (8) is fixed on piston rod (4) termination, shift fork (7) is fixed on slide block (8) both sides by bearing pin (16), is provided with driving lever (11) between two shift forks (7); Flange shaft (10) is inserted in shift fork (7), the lock (16) and fixes, and latch hook (9) is articulated on the lock (16) by bearing pin (12), and spring (13) is located between lock (16), the latch hook (9).