CN218542787U

CN218542787U - Front-jacking type telescopic hydraulic cylinder with good sealing performance

Info

Publication number: CN218542787U
Application number: CN202222466739.4U
Authority: CN
Inventors: 杨善武; 蒋长贞; 王荣文; 郭树峰
Original assignee: Linqing Dingtai Machinery Co ltd
Current assignee: Linqing Dingtai Machinery Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-02-28
Anticipated expiration: 2032-09-19

Abstract

The utility model discloses a flexible pneumatic cylinder of preceding top formula that leakproofness is good, including cylinder, first piston rod and second piston rod, oil guide pipeline has been seted up to the lower part of cylinder one side surface, the upper portion of cylinder one side surface is provided with leads the oil head, just the oil groove has been seted up to the inside of first piston rod, the middle part fixed mounting of cylinder inner chamber has the second elastic tube, the middle part fixed mounting of first piston rod inner chamber has first elastic tube, the inside of first piston rod is provided with spacing piece of second and second sealing ring, the inside of cylinder is provided with first spacing piece and first sealing ring, be provided with the second sealing washer between first piston rod and the cylinder, be provided with first sealing washer between first piston rod and the second piston rod. A preceding top formula pneumatic cylinder that the leakproofness is good, possess and increase sealing performance, advantages such as convenient to use bring better use prospect.

Description

Front-jacking type telescopic hydraulic cylinder with good sealing performance

Technical Field

The utility model relates to a hydraulic cylinder technical field specifically is a flexible pneumatic cylinder of preceding top formula that leakproofness is good.

Background

The hydraulic oil cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and does linear reciprocating motion (or swinging motion), has a simple structure and reliable work, can remove a speed reducer when realizing reciprocating motion, has no transmission clearance, and moves stably, so the hydraulic oil cylinder is widely applied to hydraulic systems of various machines.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a flexible pneumatic cylinder of preceding top formula that leakproofness is good possesses and increases sealing performance, and the problem in the background art can effectively be solved to advantages such as convenient to use.

(II) technical scheme

In order to achieve the above purpose, the utility model adopts the technical proposal that: the utility model provides a preceding top formula hydraulic cylinder that leakproofness is good, includes cylinder, first piston rod and second piston rod, the oil guide pipeline has been seted up to the lower part of cylinder one side surface, the upper portion of cylinder one side surface is provided with leads the oil head, just the oil groove has been seted up to the inside of first piston rod, the middle part fixed mounting of cylinder inner chamber has the second elastic tube, the middle part fixed mounting of first piston rod inner chamber has first elastic tube, the inside of first piston rod is provided with spacing piece of second and second sealing ring, the inside of cylinder is provided with first spacing piece and first sealing ring, be provided with the second sealing washer between first piston rod and the cylinder, be provided with first sealing washer between first piston rod and the second piston rod.

Preferably, the second sealing ring is fixedly installed on the outer surface of one end of the inner cavity of the cylinder barrel, the first sealing ring is fixedly installed on the outer surface of one end of the inner cavity of the first piston rod, the outer wall of the first piston rod is in sliding connection with the second sealing ring, the outer wall of the second piston rod is in sliding connection with the first sealing ring, and sealing performance is improved.

Preferably, the first limiting piece is fixedly installed on the outer surface of one end of the first piston rod, the first sealing ring is fixedly installed on the outer wall of one end of the first piston rod, and the outer surface of one side of the first sealing ring is fixedly connected with the outer surface of one side of the first limiting piece, so that the sealing effect is improved.

Preferably, the second limiting piece is fixedly installed on the outer surface of one end of the second piston rod, the second sealing ring is located on the outer wall of one end of the second piston rod, and the outer surface of one side of the second sealing ring is fixedly connected with the outer surface of one side of the second limiting piece, so that the sealing effect is improved.

Preferably, sliding connection is adopted between the outer wall of the first limiting piece and the inner wall of the second elastic tube, sliding connection is adopted between the outer wall of the second limiting piece and the inner wall of the first elastic tube, and the use is convenient.

Preferably, the first elastic tube, the second sealing ring, the first sealing ring and the second sealing ring are all made of rubber materials, and the sealing performance is improved.

(III) advantageous effects

Compared with the prior art, the utility model provides a flexible pneumatic cylinder of preceding top formula that leakproofness is good possesses following beneficial effect:

1. this flexible pneumatic cylinder of preceding top formula that leakproofness is good, first sealing washer, second sealing washer, first sealing ring and second sealing ring through the setting, are convenient for increase the leakproofness, and first sealing washer, second sealing washer are moving about when targetting in place following the spacing piece of first spacing piece second, and second sealing washer is extrudeed with first sealing washer, increases the leakproofness.

2. This flexible pneumatic cylinder of preceding top formula that leakproofness is good through the first elastic tube and the second elastic tube that set up, when the spacing piece of second slides with first spacing piece, extrudees second elastic tube and first elastic tube, further increases the leakproofness.

Drawings

Fig. 1 is the utility model discloses a front top formula telescopic hydraulic cylinder's that leakproofness is good overall structure schematic diagram.

Fig. 2 is a side sectional view of the front top type telescopic hydraulic cylinder with good sealing performance.

Fig. 3 is the utility model discloses a structural schematic diagram of first sealing washer in the flexible pneumatic cylinder of preceding top formula that the leakproofness is good.

In the figure: 1. a cylinder barrel; 2. an oil guide pipeline; 3. an oil guide head; 4. a first piston rod; 5. a second piston rod; 6. a first seal ring; 7. a second seal ring; 8. a first elastic tube; 9. a second elastic tube; 10. a first limiting sheet; 11. a first seal ring; 12. a second limiting sheet; 13. a second seal ring; 14. and an oil guide groove.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

The embodiment is a front-jacking type telescopic hydraulic cylinder with good sealing performance.

As shown in fig. 1-3, the oil guide device comprises a cylinder barrel 1, a first piston rod 4 and a second piston rod 5, wherein an oil guide pipeline 2 is arranged at the lower part of the outer surface of one side of the cylinder barrel 1, an oil guide head 3 is arranged at the upper part of the outer surface of one side of the cylinder barrel 1, an oil guide groove 14 is arranged inside the first piston rod 4, a second elastic barrel 9 is fixedly arranged at the middle part of the inner cavity of the cylinder barrel 1, a first elastic barrel 8 is fixedly arranged at the middle part of the inner cavity of the first piston rod 4, a second limiting piece 12 and a second sealing ring 13 are arranged inside the first piston rod 4, a first limiting piece 10 and a first sealing ring 11 are arranged inside the cylinder barrel 1, a second sealing ring 7 is arranged between the first piston rod 4 and the cylinder barrel 1, and a first sealing ring 6 is arranged between the first piston rod 4 and the second piston rod 5.

The second sealing ring 7 is fixedly arranged on the outer surface of one end of the inner cavity of the cylinder barrel 1, the first sealing ring 6 is fixedly arranged on the outer surface of one end of the inner cavity of the first piston rod 4, the outer wall of the first piston rod 4 is in sliding connection with the second sealing ring 7, and the outer wall of the second piston rod 5 is in sliding connection with the first sealing ring 6; the first limiting piece 10 is fixedly arranged on the outer surface of one end of the first piston rod 4, the first sealing ring 11 is fixedly arranged on the outer wall of one end of the first piston rod 4, and the outer surface of one side of the first sealing ring 11 is fixedly connected with the outer surface of one side of the first limiting piece 10; the second limiting piece 12 is fixedly installed on the outer surface of one end of the second piston rod 5, the second sealing ring 13 is located on the outer wall of one end of the second piston rod 5, and the outer surface of one side of the second sealing ring 13 is fixedly connected with the outer surface of one side of the second limiting piece 12; the outer wall of the first limiting piece 10 is in sliding connection with the inner wall of the second elastic tube 9, and the outer wall of the second limiting piece 12 is in sliding connection with the inner wall of the first elastic tube 8; the first elastic tube 8, the second elastic tube 9, the second sealing ring 7, the first sealing ring 6, the first sealing ring 11 and the second sealing ring 13 are all made of rubber.

It should be noted that the utility model relates to a flexible pneumatic cylinder of preceding top formula that leakproofness is good, the flexible pneumatic cylinder of preceding top formula is when using, injects hydraulic oil through 2 departments of oil pipe way, and one side surface of the spacing piece 12 second of second receives thrust. The second limiting sheet 12 slides along the inside of the first piston rod 4 to drive the second piston rod 5 to slide along one end of the first sealing ring 6, so that the outer wall of one end of the second piston rod 5 extends out of the first piston rod 4, when the second limiting sheet 12 reaches one end inside the first piston rod 4, the first piston rod 4 is driven to slide along one end of the cylinder barrel 1, so that the outer wall of one end of the first piston rod 4 extends out of the cylinder barrel 1, so that the first limiting sheet 10 reaches one end inside the cylinder barrel 1 to complete extension, in the process, the first limiting sheet 10 is extruded with the second elastic barrel 9, the second limiting sheet 12 extrudes the first elastic barrel 8, one end of the first sealing ring 11 and one end of the second sealing ring 7 are extruded, the second sealing ring 13 extrudes one end of the first sealing ring 6 to increase sealing performance, when resetting is needed, hydraulic oil is input through the position of the oil guide head 3, the hydraulic oil is conducted to the left side of the second limiting sheet 12 through the oil guide head 14, the second limiting sheet 12 drives the second piston rod 5 to perform good sealing along the first sealing ring 6, so that the piston rod 4 does not enter the inner end of the cylinder barrel 4, and the piston rod 4, the piston rod 4 is described in the piston rod 2, and the piston rod 4, the piston rod is reset technology that the piston rod 4.

It is noted that, herein, relational terms such as first and second (a, b, etc.) 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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. The utility model provides a preceding top formula hydraulic cylinder that leakproofness is good, includes cylinder (1), first piston rod (4) and second piston rod (5), its characterized in that: the oil guide pipe (2) is arranged at the lower part of the outer surface of one side of the cylinder barrel (1), the oil guide head (3) is arranged on the upper part of the outer surface of one side of the cylinder barrel (1), the oil guide groove (14) is arranged in the first piston rod (4), the second elastic barrel (9) is fixedly arranged in the middle of the inner cavity of the cylinder barrel (1), the first elastic barrel (8) is fixedly arranged in the middle of the inner cavity of the first piston rod (4), the second limiting piece (12) and the second sealing ring (13) are arranged in the first piston rod (4), the first limiting piece (10) and the first sealing ring (11) are arranged in the cylinder barrel (1), the second sealing ring (7) is arranged between the first piston rod (4) and the cylinder barrel (1), and the first sealing ring (6) is arranged between the first piston rod (4) and the second piston rod (5).

2. The front-jacking type telescopic hydraulic cylinder with good sealing performance as claimed in claim 1, wherein: the second sealing ring (7) is fixedly installed on the outer surface of one end of the inner cavity of the cylinder barrel (1), the first sealing ring (6) is fixedly installed on the outer surface of one end of the inner cavity of the first piston rod (4), the outer wall of the first piston rod (4) is in sliding connection with the second sealing ring (7), and the outer wall of the second piston rod (5) is in sliding connection with the first sealing ring (6).

3. The front-jacking type telescopic hydraulic cylinder with good sealing performance as claimed in claim 2, wherein: the first limiting piece (10) is fixedly installed on the outer surface of one end of the first piston rod (4), the first sealing ring (11) is fixedly installed on the outer wall of one end of the first piston rod (4), and the outer surface of one side of the first sealing ring (11) is fixedly connected with the outer surface of one side of the first limiting piece (10).

4. The front-jacking type telescopic hydraulic cylinder with good sealing performance as claimed in claim 3, wherein: the second limiting sheet (12) is fixedly arranged on the outer surface of one end of the second piston rod (5), the second sealing ring (13) is located on the outer wall of one end of the second piston rod (5), and the outer surface of one side of the second sealing ring (13) is fixedly connected with the outer surface of one side of the second limiting sheet (12).

5. The front-jacking type telescopic hydraulic cylinder with good sealing performance as claimed in claim 4, wherein: the outer wall of the first limiting piece (10) is in sliding connection with the inner wall of the second elastic tube (9), and the outer wall of the second limiting piece (12) is in sliding connection with the inner wall of the first elastic tube (8).

6. The front-jacking type telescopic hydraulic cylinder with good sealing performance as claimed in claim 5, wherein: the first elastic tube (8), the second elastic tube (9), the second sealing ring (7), the first sealing ring (6), the first sealing ring (11) and the second sealing ring (13) are all made of rubber.