CN217898350U

CN217898350U - Anti-deflection hydraulic oil cylinder with guiding function

Info

Publication number: CN217898350U
Application number: CN202221449137.1U
Authority: CN
Inventors: 王长磊; 蒋逸君; 袁华杰
Original assignee: Changzhou Li'an Hydraulic Equipment Co ltd
Current assignee: Changzhou Li'an Hydraulic Equipment Co ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-11-25
Anticipated expiration: 2032-06-10

Abstract

The utility model relates to the technical field of hydraulic cylinders, in particular to an anti-deflection hydraulic cylinder with a guiding function, which comprises a cylinder barrel, a piston rod, a front cylinder cover and a rear cylinder cover, wherein guide rods distributed along the length direction of the cylinder barrel are arranged inside the cylinder barrel, the upper end and the lower end of each guide rod are respectively connected with the front cylinder cover and the rear cylinder cover, a guide hole matched with the guide rods is arranged on the piston in a penetrating way, and the guide rods are inserted into the guide holes; the number of the guide rods is two, and the two guide rods are symmetrically distributed on two sides of the piston rod. The utility model discloses a guide bar runs through the piston, therefore the guide bar can avoid the piston to take place to deflect, and then effectively protects the piston, helps prolonging the life of piston.

Description

Anti-deflection hydraulic oil cylinder with guiding function

Technical Field

The utility model relates to a hydraulic cylinder technical field specifically is a prevent hydraulic cylinder that deflects with direction function.

Background

The hydraulic oil cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion). In general, when the hydraulic oil cylinder is used, the load applied to the hydraulic oil cylinder is mostly axial load, but in some special use occasions, the hydraulic oil cylinder is also applied with radial load, and then a piston rod of the hydraulic oil cylinder is easy to deflect and damage when moving. Therefore, we propose an anti-deflection hydraulic oil cylinder with a guiding function to solve the above disadvantages well.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an prevent hydraulic cylinder that deflects with direction function for solve the problem that proposes in the above-mentioned background art.

The utility model discloses a can realize through following technical scheme:

the utility model provides an anti-deflection hydraulic cylinder with direction function, includes cylinder, piston rod, preceding cylinder cap and back cylinder cap, the inside of cylinder is equipped with the guide bar that distributes along cylinder length direction, the upper and lower both ends of guide bar respectively with preceding cylinder cap and back cylinder cap link to each other, run through on the piston and set up the guiding hole with guide bar looks adaptation, the guide bar inserts in the guiding hole.

Optionally, the number of the guide rods is two, and the two guide rods are symmetrically distributed on two sides of the piston rod.

Optionally, the inner side surfaces of the front cylinder cover and the rear cylinder cover are provided with positioning holes matched with the guide rods, and two ends of the guide rods are respectively inserted into the positioning holes in the front cylinder cover and the rear cylinder cover.

Optionally, an inner bushing is fixedly arranged inside the guide hole, a first sealing ring is attached to the inner peripheral wall of the inner bushing, and an inner ring of the first sealing ring is closely attached to the outer surface of the guide rod.

Optionally, a plurality of sliding grooves distributed in the vertical direction are uniformly formed in the inner peripheral wall of the cylinder barrel, a plurality of sliding blocks matched with the sliding grooves are formed in the outer peripheral wall of the piston in a protruding mode, and the sliding blocks are embedded into the sliding grooves.

Optionally, the inner surface of the sliding groove is arc-shaped, arc-shaped chamfers are arranged on the two sides of the sliding groove and at the junction of the two sides of the sliding groove and the inner surface of the cylinder barrel, a second sealing ring is sleeved outside the piston and at the position located on the sliding block, and the outer surface of the second sealing ring is tightly attached to the inner surface of the sliding groove and the inner surface of the cylinder barrel.

Compared with the prior art, the utility model provides an anti-deflection hydraulic cylinder with direction function possesses following beneficial effect:

1. the guide rod penetrates through the piston, so that the guide rod can prevent the piston from deflecting, the piston is effectively protected, and the service life of the piston is prolonged;

2. the utility model discloses be provided with many spouts along vertical distribution at the inner wall of cylinder, and be equipped with the slider with spout looks adaptation at the outer wall of piston, consequently can further avoid the piston to produce through the cooperation of slider and spout and deflect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a longitudinal sectional view of the present invention;

fig. 3 is a transverse sectional view of the present invention;

FIG. 4 is an enlarged corresponding view taken at A in FIG. 2;

fig. 5 is a schematic view of the piston structure of the present invention.

In the figure: 1. a cylinder barrel; 2. a piston; 3. a piston rod; 4. a front cylinder cover; 5. a rear cylinder cover; 6. a guide bar; 7. a guide hole; 8. positioning holes; 9. an inner liner; 10. a first seal ring; 11. a chute; 12. a slider; 13. and a second seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The embodiment is as follows: referring to fig. 1-5, an anti-deflection hydraulic cylinder with a guiding function includes a cylinder barrel 1, a piston 2, a piston rod 3, a front cylinder cover 4 and a rear cylinder cover 5, wherein a guide rod 6 distributed along the length direction of the cylinder barrel 1 is disposed inside the cylinder barrel 1, the upper end and the lower end of the guide rod 6 are respectively connected with the front cylinder cover 4 and the rear cylinder cover 5, specifically, positioning holes 8 adapted to the guide rod 6 are respectively disposed on the inner side surfaces of the front cylinder cover 4 and the rear cylinder cover 5, and the two ends of the guide rod 6 are respectively inserted into the positioning holes 8 of the front cylinder cover 4 and the rear cylinder cover 5. A guide hole 7 matched with the guide rod 6 penetrates through the piston 2, the guide rods 6 are inserted into the guide hole 7, the number of the guide rods 6 is two, and the two guide rods 6 are symmetrically distributed on two sides of the piston rod 3; accordingly, the piston 2 can be lifted and lowered along the guide rod 6.

On the basis of the above embodiments, the inner portion of the guide hole 7 is fixedly provided with the inner bushing 9, the inner peripheral wall of the inner bushing 9 is attached with the first sealing ring 10, and the inner ring of the first sealing ring 10 is closely attached to the outer surface of the guide rod 6, so as to improve the sealing performance of the piston 2 and prevent the hydraulic oil from overflowing from the guide hole 7.

On the basis of the above embodiment, the inner peripheral wall of the cylinder barrel 1 is uniformly provided with a plurality of sliding grooves 11 distributed along the vertical direction, the outer peripheral wall of the piston 2 is protrudingly formed with a plurality of sliding blocks 12 matched with the sliding grooves 11, and the sliding blocks 12 are embedded in the sliding grooves 11; moreover, the inner surface of the sliding chute 11 is arc-shaped, the two sides of the sliding chute 11 and the junction of the sliding chute 11 and the inner surface of the cylinder barrel 1 are provided with arc-shaped chamfers, a second sealing ring 13 is sleeved outside the piston 2 and at the position of the sliding block 12, the outer surface of the second sealing ring 13 is tightly attached to the inner surface of the sliding chute 11 and the inner surface of the cylinder barrel 1, the sealing performance of the piston 2 is improved, and the sliding block 12 is embedded into the sliding chute 11, so that the sliding block 12 also has the function of preventing the piston 2 from deflecting, and the piston 2 can be further protected.

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. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent hydraulic cylinder that deflects with direction function, includes cylinder (1), piston (2), piston rod (3), preceding cylinder cap (4) and back cylinder cap (5), its characterized in that: the cylinder is characterized in that guide rods (6) distributed along the length direction of the cylinder (1) are arranged inside the cylinder (1), the upper end and the lower end of each guide rod (6) are connected with the front cylinder cover (4) and the rear cylinder cover (5) respectively, guide holes (7) matched with the guide rods (6) are formed in the piston (2) in a penetrating mode, and the guide rods (6) are inserted into the guide holes (7).

2. An anti-deflection hydraulic cylinder with guiding function as claimed in claim 1, characterized in that: the number of the guide rods (6) is two, and the two guide rods (6) are symmetrically distributed on two sides of the piston rod (3).

3. The anti-deflection hydraulic oil cylinder with the guiding function as claimed in claim 1, wherein: locating holes (8) matched with the guide rods (6) are formed in the inner side faces of the front cylinder cover (4) and the rear cylinder cover (5), and two ends of each guide rod (6) are inserted into the locating holes (8) in the front cylinder cover (4) and the rear cylinder cover (5) respectively.

4. The anti-deflection hydraulic oil cylinder with the guiding function as claimed in claim 1, wherein: an inner bushing (9) is fixedly arranged inside the guide hole (7), a first sealing ring (10) is attached to the inner peripheral wall of the inner bushing (9), and the inner ring of the first sealing ring (10) is closely attached to the outer surface of the guide rod (6).

5. The anti-deflection hydraulic oil cylinder with the guiding function as claimed in claim 1, wherein: evenly set up many spout (11) that distribute along vertical direction on the internal perisporium of cylinder (1), protruding shaping has a plurality ofly on the periphery wall of piston (2) with slider (12) of spout (11) adaptation, slider (12) embedding is in spout (11).

6. The anti-deflection hydraulic oil cylinder with the guiding function as claimed in claim 5, wherein: the inner surface of the sliding groove (11) is arc-shaped, arc-shaped chamfers are arranged on the two sides of the sliding groove (11) and at the junction of the sliding groove and the inner surface of the cylinder barrel (1), a second sealing ring (13) is sleeved outside the piston (2) and at the position of the sliding block (12), and the outer surface of the second sealing ring (13) is tightly attached to the inner surface of the sliding groove (11) and the inner surface of the cylinder barrel (1).