CN216199504U

CN216199504U - Hydraulic cylinder locking mechanism

Info

Publication number: CN216199504U
Application number: CN202122711538.1U
Authority: CN
Inventors: 明安
Original assignee: Jiangsu Clear Hydraulic Technology Co ltd
Current assignee: Jiangsu Clear Hydraulic Technology Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-05
Anticipated expiration: 2031-11-08

Abstract

The utility model discloses a hydraulic cylinder locking mechanism, which comprises a piston rod, a cylinder barrel, a cylinder bottom and a cylinder cover, wherein the rear side end part of the piston rod is provided with a piston, a mounting ring is fixed on the piston rod positioned at the front end of the piston, two sides of the mounting ring are provided with elastic connecting pieces, the elastic connecting pieces are connected with limiting arms, the front end of each limiting arm is provided with a sliding block, and the rear side wall of each sliding block is provided with a limiting block; the piston rod locking mechanism comprises a cylinder cover, a sliding block, a sliding ring, a sliding block, a limiting groove, a limiting block and a piston rod, wherein the inner wall of the front end of the cylinder cover is provided with a circle of sliding groove, the end face of the front end of the cylinder cover is provided with a clamping groove, the cylinder cover is internally provided with a round-table-shaped movable block, the outer wall of the front end of the movable block is provided with a circle of sliding ring, the two sides of the round-table-shaped movable block are provided with sliding ways, and the bottom end of the sliding way is provided with the limiting groove.

Description

Hydraulic cylinder locking mechanism

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder locking mechanism.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion, so the hydraulic cylinder is widely applied to hydraulic systems of various machines, and in the operation process of the hydraulic cylinder, the hydraulic valve is sometimes required to be fixed after moving and stretching and is kept for a long time so as to be used for supporting.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a locking mechanism of a hydraulic cylinder to solve the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme: a hydraulic cylinder locking mechanism comprises a piston rod, a cylinder barrel, a cylinder bottom and a cylinder cover, wherein the cylinder bottom is connected with one end of the cylinder barrel in a sealing mode, the cylinder cover is connected with the other end of the cylinder barrel in a sealing mode, and the piston rod penetrates through the cylinder barrel and the cylinder cover;

the rear side end of the piston rod is provided with a piston, the piston corresponds to the cylinder bottom, a mounting ring is fixed on the piston rod positioned at the front end of the piston, elastic connecting pieces are arranged on two sides of the mounting ring and connected with limiting arms, a sliding block is arranged at the front end of each limiting arm, and a limiting block is arranged on the rear side wall of each sliding block;

the utility model discloses a cylinder cover, including cylinder cap, sliding ring, joint piece, limiting groove, piston rod, sliding ring, movable connecting piece, joint piece, sliding rail size and slider phase-match, the sliding ring bottom is equipped with the limiting groove, limiting groove size and stopper phase-match, be equipped with the turning handle on the front end terminal surface of the movable block of circular ring form, be equipped with swing joint piece on the turning handle, swing joint piece is connecting joint piece, joint piece and joint groove phase-match, the through-hole has transversely been seted up in the middle of the movable block of circular ring form, the diameter size of through-hole is equipped with the piston rod on the front end inner wall of cylinder cap.

Preferably, an oil inlet is formed in the bottom of the cylinder, and an exhaust valve is arranged on the wall of the cylinder barrel.

Compared with the prior art, the utility model has the beneficial effects that: the locking device is simple in structure and novel in design, when the locking device needs to be locked and fastened, the rotating handle is moved to drive the movable block to rotate until the rotating handle rotates to the clamping groove, the clamping block on the rotating handle can be clamped into the clamping groove to be locked, the fixed locking of the movable block is ensured, and at the moment, the sliding grooves on two sides of the movable block and the limiting wall are positioned on the same horizontal line; the piston rod is pushed to extend upwards, the limiting arm on the piston rod is driven by the elastic connecting piece to expand along the movable block, the sliding block on the limiting arm corresponds to the sliding groove, then oil feeding is stopped to push the piston rod, the piston rod loses pushing power and slides downwards for a small section along the same trend, so that the sliding block can slide downwards along the sliding groove, the limiting block is embedded into the limiting groove, and the whole extended piston rod is limited and fixed, and locking and fixing can be achieved; in conclusion, the movable block can be fixedly locked through the clamping block and the clamping groove, the piston rod can be fixedly locked on the movable block through the matching of the sliding block and the sliding groove, the limiting block, the limiting groove and other parts, so that the hydraulic valve is fixed after being stretched and is kept in the posture for a long time for supporting, the double-locking reliability is high, and the deviation is not easy to occur after the double-locking is carried out for a long time.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a hydraulic cylinder locking mechanism comprises a piston rod 2, a cylinder barrel 1, a cylinder bottom 3 and a cylinder cover 4, wherein the cylinder bottom 3 is connected with one end of the cylinder barrel 1 in a sealing mode, the cylinder cover 4 is connected with the other end of the cylinder barrel 1 in a sealing mode, and the piston rod 2 penetrates through the cylinder barrel 1 and the cylinder cover 4; the cylinder bottom 3 is provided with an oil inlet 31 which can be externally connected with hydraulic oil for improving hydraulic power, and the wall of the cylinder barrel 1 is provided with an exhaust valve 11 for exhausting gas generated in the cylinder barrel;

the rear side end of the piston rod 2 is provided with a piston 21, the piston 21 corresponds to the cylinder bottom 3, when hydraulic oil enters from an oil inlet, the piston can be jacked up to push the piston rod to perform telescopic motion, a mounting ring 22 is fixed on the piston rod 2 at the front end of the piston 21, elastic connecting pieces 221 are arranged on two sides of the mounting ring 22 and have elastic deformation characteristics, the elastic connecting pieces 221 are connected with limiting arms 23, the limiting rods can be driven to expand or reset through the elastic connecting pieces, a sliding block 231 is arranged at the front end of each limiting arm 23 to facilitate sliding, and a limiting block 232 is arranged on the rear side wall of each sliding block 231 to be used for limiting and fixing;

the inner wall of the front end of the cylinder cover 4 is provided with a circle of sliding groove 41, the end face of the front end of the cylinder cover 4 is provided with a clamping groove 42 for clamping and fixing a clamping block, the clamping groove can also be used as a marking, a truncated cone-shaped movable block 43 is arranged in the cylinder cover 4, the outer wall of the front end of the truncated cone-shaped movable block 43 is provided with a circle of sliding ring 431, the sliding ring 431 is embedded in the sliding groove 41, and by adopting the connecting structure, the truncated cone-shaped movable block can rotate in the cylinder cover;

the two sides of the truncated cone-shaped movable block 43 are provided with slide ways 432, the size of each slide way 432 is matched with that of the slide block 231, so that the slide block slides in the slide way, the bottom end of each slide way 432 is provided with a limiting groove 433, the size of each limiting groove 433 is matched with that of the limiting block 232, and after the slide block slides to the bottom end of each slide way, the limiting blocks on the slide block are embedded into the limiting grooves for limiting and fixing, so that the piston rod can be locked and fixed on the movable block;

the front end face of the truncated cone-shaped movable block 43 is provided with a rotating handle 434, a worker can hold the rotating handle to rotate and then drive the movable block to rotate, the rotating handle 434 is provided with a movable connecting piece 4341, the movable connecting piece 4341 is connected with a clamping block 435, the clamping block can move, the clamping block 435 is matched with the clamping groove 42, and the clamping block can also play a role in marking, so that when the clamping block is clamped into the clamping groove, the whole movable block is fixedly locked, and meanwhile, the sliding grooves on two sides of the movable block and the limiting arm are necessarily on the same horizontal line;

a through hole 436 is transversely formed in the middle of the circular truncated cone-shaped movable block 43, the diameter of the through hole 436 is matched with that of the piston rod 2, and the piston rod 2 can penetrate through the through hole 436 to perform telescopic motion.

The working principle is as follows: when locking and fastening are needed, the rotating handle is moved to drive the movable block to rotate until the rotating handle rotates to the clamping groove, the clamping block on the rotating handle is clamped into the clamping groove to be locked, fixed locking of the movable block is ensured, and at the moment, sliding grooves on two sides of the movable block and the limiting wall are positioned on the same horizontal line; at the moment, hydraulic oil enters from the oil inlet to push the piston rod to be fully extended, the limiting arm on the piston rod is unfolded along the movable block under the driving of the elastic connecting piece, the sliding block on the limiting arm corresponds to the sliding groove, then the oil feeding is stopped to push the piston rod, the piston rod loses the pushing power and slides down a small section along the same trend, so that the sliding block can slide down along the sliding groove, the limiting block is embedded into the limiting groove, and the whole extended piston rod is limited and fixed, and the locking and fixing can be realized;

when the hydraulic rod normally reciprocates and stretches, the clamping block is stirred to be separated from the clamping groove, then the rotating handle is moved to drive the movable block to rotate until the rotating handle is far away from the clamping groove, and the side wall of the movable block corresponding to the limiting wall is smooth at the moment; at the moment, hydraulic oil enters from the oil inlet to push the piston rod to extend, the limiting arm on the piston rod is driven by the elastic connecting piece to expand along the smooth side wall of the movable block, when the hydraulic oil is discharged, the piston rod descends and contracts, and the limiting arm on the piston rod moves downwards along the smooth side wall of the movable block under the drive of the elastic connecting piece until the piston rod resets.

In conclusion, the movable block can be fixedly locked through the clamping block and the clamping groove, the piston rod can be fixedly locked on the movable block through the matching of the sliding block and the sliding groove, the limiting block, the limiting groove and other parts, so that the hydraulic valve is fixed after being stretched and is kept in the posture for a long time for supporting, the double-locking reliability is high, and the deviation is not easy to occur after the double-locking is carried out for a long time.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pneumatic cylinder locking mechanism, includes piston rod (2), cylinder (1), cylinder end (3) and cylinder cap (4), its characterized in that: the cylinder bottom (3) is connected with one end of the cylinder barrel (1) in a sealing mode, the cylinder cover (4) is connected with the other end of the cylinder barrel (1) in a sealing mode, and the piston rod (2) penetrates through the cylinder barrel (1) and the cylinder cover (4);

a piston (21) is arranged at the rear side end of the piston rod (2), the piston (21) corresponds to the cylinder bottom (3), a mounting ring (22) is fixed on the piston rod (2) at the front end of the piston (21), elastic connecting pieces (221) are arranged on two sides of the mounting ring (22), the elastic connecting pieces (221) are connected with limiting arms (23), a sliding block (231) is arranged at the front end of each limiting arm (23), and a limiting block (232) is arranged on the rear side wall of each sliding block (231);

the cylinder cover is characterized in that a circle of sliding groove (41) is formed in the inner wall of the front end of the cylinder cover (4), a clamping groove (42) is formed in the end face of the front end of the cylinder cover (4), a circular truncated cone-shaped movable block (43) is arranged in the cylinder cover (4), a circle of sliding ring (431) is arranged on the outer wall of the front end of the circular truncated cone-shaped movable block (43), the sliding ring (431) is embedded in the sliding groove (41), sliding ways (432) are arranged on two sides of the circular truncated cone-shaped movable block (43), the size of each sliding way (432) is matched with a sliding block (231), a limiting groove (433) is arranged at the bottom end of each sliding way (432), the size of each limiting groove (433) is matched with a limiting block (232), a rotating handle (434) is arranged on the end face of the circular truncated cone-shaped movable block (43), a movable connecting piece (4341) is arranged on the rotating handle (434), and the movable connecting piece (4341) is connected with the clamping block (435), the clamping block (435) is matched with the clamping groove (42), a through hole (436) is transversely formed in the middle of the circular truncated cone-shaped movable block (43), the diameter of the through hole (436) is matched with that of the piston rod (2), and the piston rod (2) can penetrate through the through hole (436).

2. The locking mechanism of a hydraulic cylinder according to claim 1, characterized in that: an oil inlet (31) is formed in the cylinder bottom (3), and an exhaust valve (11) is arranged on the wall of the cylinder barrel (1).