CN216044752U

CN216044752U - Mechanical positioning self-locking oil cylinder

Info

Publication number: CN216044752U
Application number: CN202122592259.8U
Authority: CN
Inventors: 庄培贤
Original assignee: Deka Hydraulic Technology Suzhou Co ltd
Current assignee: Deka Hydraulic Technology Suzhou Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-03-15
Anticipated expiration: 2031-10-27

Abstract

The utility model discloses a mechanical positioning self-locking oil cylinder, and particularly relates to the technical field of oil cylinders, which comprises an oil cylinder main body, a piston rod and a piston, wherein a self-locking nut is arranged inside the oil cylinder main body, a clamping connecting rod is hermetically and slidably sleeved inside the piston rod and the piston, the outer surface of one end of the clamping connecting rod is in threaded connection with the inside of the self-locking nut, two clamping grooves are formed in the outer surface of one end, close to the piston, of the piston rod, two sleeves are fixedly communicated with the inside of the oil cylinder main body, one ends, far away from the oil cylinder main body, of the sleeves are fixedly communicated with a screw cylinder, and an adjusting rod is in threaded connection with the inside of the screw cylinder. The utility model can effectively carry out mechanical self-locking positioning after the piston rod moves to the designated position, prevent the piston rod from returning, improve the stability and the safety of the use of the oil cylinder, has stronger flexibility and practicability, is convenient for unlocking, also prevents the piston rod from rotating and improves the stability of the movement of the piston rod.

Description

Mechanical positioning self-locking oil cylinder

Technical Field

The utility model relates to the technical field of oil cylinders, in particular to a mechanical positioning self-locking oil cylinder.

Background

The hydraulic oil cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion. The hydraulic system is widely applied to hydraulic systems of various machines. When the locking device is used, the oil cylinder is generally required to have a locking function at the end of a stroke so as to prevent the piston rod from moving under the action of large external force and influencing the supporting function of the oil cylinder. The conventional method for locking the oil cylinder is to lock the oil cylinder by adopting a hydraulic lock, but the hydraulic lock is large in overall dimension, so that the oil cylinder is inconvenient to use in some occasions, and the common hydraulic cylinder has a common self-locking and positioning effect.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a mechanically positioning self-locking cylinder to solve the above-mentioned problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: mechanical location auto-lock hydro-cylinder, including hydro-cylinder main part, piston rod and piston, the inside of hydro-cylinder main part is equipped with self-locking nut, the inside sealed sliding sleeve of piston rod and piston is equipped with the card connecting rod, the one end surface threaded connection of card connecting rod is inside self-locking nut, two draw-in grooves have been seted up to the one end surface that the piston rod is close to the piston, the inside fixed intercommunication of hydro-cylinder main part has two sleeves, the fixed intercommunication of one end that the hydro-cylinder main part was kept away from to the sleeve has a barrel, the inside threaded connection of barrel has the regulation pole, the inside sealed sliding sleeve of sleeve and hydro-cylinder main part is equipped with the kelly, just the one end of adjusting the pole is worn to locate in the kelly and fixedly connected with fixture block, two elastic spring of one side fixedly connected with that the sleeve is relative with the kelly.

Preferably, sealing gaskets are arranged on two sides of the piston, the outer surfaces of the sealing gaskets and the outer surface of the piston are tightly abutted to the inner surface of the oil cylinder main body, the self-locking nut is fixedly connected inside the oil cylinder main body, and one end, far away from the piston, of the piston rod is inserted into the oil cylinder main body in a sealing and sliding mode.

Preferably, one side of the clamping rod, which is close to the elastic spring, is provided with a sealing check ring, and the outer surface of the sealing check ring tightly abuts against the inner surface of the sleeve.

Preferably, the outer surface of one end of the clamping rod and the outer surface of the clamping block respectively slidably abut against the outer surface of the piston rod and the inner surface of the clamping rod, the adjusting rod and the clamping rod are slidably clamped through the clamping block, and the two clamping rods are respectively located at the corresponding positions of the two clamping grooves.

Preferably, the sleeve is fixedly connected with two auxiliary rods on the inner wall of one side close to the screw cylinder, and the auxiliary rods are positioned in the elastic spring.

Preferably, one end of the adjusting rod, which is far away from the clamping rod, is fixedly connected with a rotating handle.

Preferably, the piston is located between the self-locking nut and the piston rod.

The utility model has the technical effects and advantages that:

1. compared with the prior art, through setting up kelly, elastic spring, regulation pole and sleeve etc. can effectively carry out mechanical auto-lock location to the piston rod after removing the assigned position, prevent that the piston rod from returning back, improved stability and the security that the hydro-cylinder used, flexibility and practicality are stronger, and the unblock of just being convenient for.

2. Compared with the prior art, the self-locking nut, the clamping connecting rod and the like are arranged, so that the piston rod is prevented from rotating, a certain limiting and positioning effect is achieved, and the piston rod can move stably under stress.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the internal structure of the cylinder body according to the present invention.

Fig. 3 is a partial structural view of the interior of the sleeve according to the present invention.

FIG. 4 is a schematic view of a partial structure of the cylinder body according to the present invention.

The reference signs are: 1. a cylinder body; 2. a piston rod; 3. a piston; 4. a self-locking nut; 5. clamping a connecting rod; 6. a card slot; 7. a sleeve; 8. a screw cylinder; 9. adjusting a rod; 10. a clamping rod; 11. a clamping block; 12. an elastic spring; 13. sealing gaskets; 14. a handle is rotated; 15. an auxiliary lever; 16. and (5) sealing the retainer ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The mechanical positioning self-locking oil cylinder shown in the attached figures 1-4 comprises an oil cylinder main body 1, a piston rod 2 and a piston 3, wherein a self-locking nut 4 is arranged inside the oil cylinder main body 1, a clamping connecting rod 5 is sleeved inside the piston rod 2 and the piston 3 in a sealing and sliding manner, the outer surface of one end of the clamping connecting rod 5 is connected inside the self-locking nut 4 in a threaded manner, two clamping grooves 6 are formed in the outer surface of one end, close to the piston 3, of the piston rod 2, two sleeves 7 are fixedly communicated inside the oil cylinder main body 1, one ends, far away from the oil cylinder main body 1, of the sleeves 7 are fixedly communicated with a barrel 8, an adjusting rod 9 is connected inside the barrel 8 in a threaded manner, a clamping rod 10 is sleeved inside the sleeves 7 and the oil cylinder main body 1 in a sealing and sliding manner, one end of the adjusting rod 9 penetrates through the clamping rod 10 and is fixedly connected with a clamping block 11, and two elastic springs 12 are fixedly connected to one side, opposite to the clamping rod 10, of the sleeves 7;

wherein, when the oil cylinder body 1 is fed with oil, a driving force to the piston 3 is generated, the piston 3 is forced to slide on the clamping connecting rod 5 and drives the piston rod 2 to move, the piston rod 2 and the like can not rotate due to the action of the self-locking nut 4 and the clamping connecting rod 5, and has a certain limiting and positioning function, so that the piston can move stably, when the clamping groove 6 on the piston rod 2 moves to the clamping rod 10, the elastic spring 12 in a compressed state drives the clamping rod 10 to be clamped into the clamping groove 6 for self-locking, and the elastic spring 12 rebounds to drive the clamping rod 10 to move towards the piston rod 2, and simultaneously, the clamping rod 10 also slides in the sleeve 7, the clamping block 11 and the adjusting rod 9 and is limited by the clamping block 11 and the adjusting rod 9 and the like, so as to effectively perform mechanical self-locking positioning after the piston rod 2 moves to a designated position, so as to fix the position of the piston rod 2, the piston rod 2 is prevented from returning, the stability and the safety of the use of the oil cylinder are improved, and the flexibility and the practicability are stronger; when the piston rod 2 needs to be unlocked, the adjusting rod 9 can be driven by the rotating handle 14 to spirally leave the oil cylinder main body 1, and the clamping rod 10 is driven to leave the clamping groove 6 under the action of the clamping block 11, so that the piston rod 2 is unlocked.

In a preferred embodiment, as shown in fig. 1, fig. 2 and fig. 4, sealing gaskets 13 are disposed on two sides of the piston 3, and the sealing gaskets 13 and the outer surface of the piston 3 both tightly abut against the inner surface of the cylinder body 1, the self-locking nut 4 is fixedly connected inside the cylinder body 1, and one end of the piston rod 2, which is far away from the piston 3, is hermetically and slidably inserted into the cylinder body 1, so that the sealing gasket 13 further enhances the sealing performance of the piston 3 and the cylinder, and the oil inlet and the oil outlet of the cylinder are better isolated, thereby improving the telescopic pushing effect of the piston rod 2; and self-locking nut 4 is fixed in hydro-cylinder main part 1, can not lead to the fact the hindrance to hydraulic oil flow, and the hydraulic oil that the oil inlet got into can flow through and contact with piston 3 from self-locking nut 4 top and bottom breach promptly, makes it promote piston 3, still cooperates with card connecting rod 5 jointly, has improved the stability of piston rod 2 and piston 3 etc..

In a preferred embodiment, as shown in fig. 2 and fig. 3, a sealing ring 16 is disposed on a side of the clamping rod 10 close to the resilient spring 12, and an outer surface of the sealing ring 16 tightly abuts against an inner surface of the sleeve 7, so that the sealing ring 16 further enhances the sealing performance in the sleeve 7, and when one end of the clamping rod 10 is clamped into the clamping groove 6, the end with the sealing ring 16 thereon still tightly abuts against the sleeve 7, and the clamping rod 10 and the sealing ring 16 effectively prevent oil from entering and causing leakage, thereby improving the sealing performance of the mechanical self-locking.

In a preferred embodiment, as shown in fig. 2 and fig. 3, an outer surface of one end of the jamming rod 10 and an outer surface of the jamming block 11 respectively slidably abut against an outer surface of the piston rod 2 and an inner surface of the jamming rod 10, the adjusting rod 9 and the jamming rod 10 are slidably clamped by the jamming block 11, and the two jamming rods 10 are respectively located at corresponding positions of the two jamming slots 6, so that the elastic spring 12 in a compressed state drives the jamming rod 10 to abut against the piston rod 2, when the piston rod 2 moves, the jamming rod 10 can be driven to be clamped into the jamming slot 6 for self-locking, and the sleeve 7, the jamming block 11, the adjusting rod 9, the elastic spring 12 and the like have certain limitations on the jamming rod 10, thereby improving the stability of self-locking.

In a preferred embodiment, as shown in fig. 3, two auxiliary rods 15 are fixedly connected to an inner wall of the sleeve 7 near the screw barrel 8, the auxiliary rods 15 are located inside the elastic springs 12, and the adjusting rod 9 is located between the two elastic springs 12, so that the auxiliary rods 15 are located inside the elastic springs 12, and the left-right shaking of the elastic springs 12 can be reduced and stabilized without hindering the compression and extension of the elastic springs 12.

In a preferred embodiment, as shown in fig. 1, fig. 2 and fig. 3, a rotating handle 14 is fixedly connected to an end of the adjusting rod 9 far away from the clamping rod 10, so that the rotating handle 14 can conveniently drive the adjusting rod 9 for gripping and using.

In a preferred embodiment, as shown in fig. 1, fig. 2 and fig. 4, the piston 3 is located between the self-locking nut 4 and the piston rod 2 so as to push the piston rod 2 under force.

The working principle of the utility model is as follows: when oil is fed into the oil cylinder main body 1, a driving force for the piston 3 is generated, the piston 3 is stressed to slide on the clamping connecting rod 5 and drives the piston rod 2 to move, the piston rod 2 and the like cannot rotate due to the action of the self-locking nut 4 and the clamping connecting rod 5, a certain limiting and positioning effect is achieved, so that the piston rod 2 can stably move, when the clamping groove 6 in the piston rod 2 moves to the clamping rod 10, the clamping rod 10 is driven to be clamped into the clamping groove 6 by the elastic spring 12 which is always in a compressed state to carry out self-locking, the elastic spring 12 rebounds to drive the clamping rod 10 to move towards the direction of the piston rod 2, the clamping rod 10 also slides in the sleeve 7, the clamping block 11 and the adjusting rod 9 and is prevented from falling off by the blocking of the clamping block 11, the adjusting rod 9 and the like, so that the piston rod 2 can be mechanically locked in a self-locking manner after moving to a specified position, and the piston rod 2 can be fixed, the piston rod 2 is prevented from returning, the using stability and the using safety of the oil cylinder are improved, when the piston rod 2 needs to be unlocked, the adjusting rod 9 can be driven by the rotating handle 14 to be spirally far away from the oil cylinder main body 1, and the clamping rod 10 is driven to leave the clamping groove 6 under the action of the clamping block 11, so that the piston rod 2 is unlocked.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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. Mechanical location auto-lock hydro-cylinder, including hydro-cylinder main part (1), piston rod (2) and piston (3), its characterized in that: a self-locking nut (4) is arranged inside the oil cylinder main body (1), a clamping connecting rod (5) is hermetically and slidably sleeved inside the piston rod (2) and the piston (3), the outer surface of one end of the clamping connecting rod (5) is connected with the inside of the self-locking nut (4) through a thread, the outer surface of one end of the piston rod (2) close to the piston (3) is provided with two clamping grooves (6), two sleeves (7) are fixedly communicated with the interior of the oil cylinder main body (1), one end of the sleeve (7) far away from the oil cylinder main body (1) is fixedly communicated with a screw cylinder (8), an adjusting rod (9) is connected with the inner thread of the screw cylinder (8), a clamping rod (10) is hermetically and slidably sleeved in the sleeve (7) and the oil cylinder main body (1), one end of the adjusting rod (9) is arranged in the clamping rod (10) in a penetrating way and is fixedly connected with a clamping block (11), one side of the sleeve (7) opposite to the clamping rod (10) is fixedly connected with two elastic springs (12).

2. The mechanical positioning self-locking oil cylinder according to claim 1, characterized in that: the two sides of the piston (3) are provided with sealing gaskets (13), the outer surfaces of the sealing gaskets (13) and the piston (3) are tightly abutted to the inner surface of the oil cylinder main body (1), the self-locking nut (4) is fixedly connected inside the oil cylinder main body (1), and one end, far away from the piston (3), of the piston rod (2) is inserted into the oil cylinder main body (1) in a sealing sliding mode.

3. The mechanical positioning self-locking oil cylinder according to claim 1, characterized in that: one side of the clamping rod (10) close to the elastic spring (12) is provided with a sealing retainer ring (16), and the outer surface of the sealing retainer ring (16) is tightly abutted against the inner surface of the sleeve (7).

4. The mechanical positioning self-locking oil cylinder according to claim 3, characterized in that: the outer surface of one end of the clamping rod (10) and the outer surface of the clamping block (11) are respectively in sliding contact with the outer surface of the piston rod (2) and the inner surface of the clamping rod (10), the adjusting rod (9) and the clamping rod (10) are in sliding clamping connection through the clamping block (11), and the clamping rod (10) is located at the corresponding position of the clamping groove (6) respectively.

5. The mechanical positioning self-locking oil cylinder according to claim 4, characterized in that: the inner wall of one side of the sleeve (7) close to the screw cylinder (8) is fixedly connected with two auxiliary rods (15), the auxiliary rods (15) are located in the elastic springs (12), and the adjusting rod (9) is located between the two elastic springs (12).

6. The mechanical positioning self-locking oil cylinder according to claim 5, characterized in that: one end of the adjusting rod (9) far away from the clamping rod (10) is fixedly connected with a rotating handle (14).

7. The mechanical positioning self-locking oil cylinder according to claim 1, characterized in that: the piston (3) is positioned between the self-locking nut (4) and the piston rod (2).