CN215486964U

CN215486964U - Multistage hydraulic cylinder internal serial type puller

Info

Publication number: CN215486964U
Application number: CN202121736372.2U
Authority: CN
Inventors: 夏萍; 丁耘
Original assignee: Qingdao Taishun Hydraulic Pneumatic Co ltd
Current assignee: Qingdao Taishun Hydraulic Pneumatic Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-01-11
Anticipated expiration: 2031-07-29

Abstract

The utility model provides a tandem puller in a multi-stage hydraulic cylinder, which relates to the field of hydraulic cylinders and comprises fixed cylinder sleeves, wherein fixed supports are fixedly sleeved at two ends of each fixed cylinder sleeve, an oil inlet pipe which is mutually communicated with the inside of each fixed cylinder sleeve is fixedly embedded in the middle of the upper surface of one fixed support, an oil outlet pipe which is mutually communicated with the inside of each fixed cylinder sleeve is fixedly embedded in the middle of the upper surface of the other fixed support, a first piston is sleeved in each fixed cylinder sleeve, a linkage sleeve is fixedly connected to one side of the first piston, a second piston is sleeved in each linkage sleeve, and a puller body is fixedly connected to one side of the second piston. Thereby reducing the degree of wear of the outer wall of the puller body.

Description

Multistage hydraulic cylinder internal serial type puller

Technical Field

The utility model relates to the technical field of hydraulic rods, in particular to a tandem puller in a multistage hydraulic cylinder.

Background

The hydraulic cylinder is a device for converting hydraulic energy into mechanical energy, is mainly applied to stretching an external connected component, and further enables the connecting component to reach a required position, and the stroke of the traditional hydraulic cylinder is short, so that the moving distance of the connecting component can be limited, and therefore the multi-stage hydraulic cylinder is timely and timely.

The existing multi-stage hydraulic cylinder can not be used for carrying out stage by stage when stretching, and then the hydraulic cylinder needs to synchronously work when working, so that the drawing device can generate loss at every time, and the service life of the multi-stage hydraulic cylinder is greatly shortened.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model discloses a tandem puller in a multi-stage hydraulic cylinder, which aims to solve the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides an inside serial-type puller of multistage pneumatic cylinder, includes fixed cylinder liner, the both ends of fixed cylinder liner are all fixed the fixing support that has cup jointed, one of them the fixed oil pipe that advances who is equipped with and the inside mutual intercommunication of fixed cylinder liner that inlays in middle part of fixed support upper surface, wherein another the fixed play oil pipe that inlays and be equipped with and the inside mutual intercommunication of fixed cylinder liner in middle part of fixed support upper surface, the inside cover of fixed cylinder liner is equipped with first piston, the linkage sleeve of one side fixedly connected with and the mutual laminating of fixed cylinder liner inner wall of first piston, the inside cover of linkage sleeve is equipped with the second piston, the puller body of one side fixedly connected with and the mutual laminating of fixed cylinder liner inner wall of second piston.

Preferably, an oil guide pipe is fixedly embedded in the inner cavity on one side of the linkage sleeve, and one end of the oil guide pipe is communicated with the inside of the linkage sleeve.

Preferably, an oil guide hole is formed in the middle of the first piston, and a fixed block is fixedly connected to one side of the middle of the second piston.

Preferably, the inner cavities of the two sides of the linkage sleeve are provided with inner sliding grooves, two inner sliding blocks are sleeved inside the inner sliding grooves in a sliding mode, and one ends of the inner sliding blocks are fixedly connected with the two sides of the second piston respectively.

Preferably, the inner cavities on two sides of the fixed cylinder sleeve are provided with outer sliding grooves, the inner parts of the two outer sliding grooves are sleeved with outer sliding blocks in a sliding mode, and one ends of the two outer sliding blocks are fixedly connected with two sides of the first piston respectively.

Preferably, the equal fixedly connected with in the inside of advancing oil pipe and going out oil pipe is sealed to fill up, two the inside of sealed pad all is overlapped and is equipped with the sealing plug.

The utility model discloses a tandem puller in a multistage hydraulic cylinder, which has the following beneficial effects:

1. the utility model discloses an utilize and lead oil pipe's design, lead oil pipe can advance the inside of furthest back and go out oil pipe at the linkage sleeve and align each other, and then the inside hydraulic oil alright flow to the inside and the discharge that goes out oil pipe through leading oil pipe of linkage sleeve, and lead the inside hydraulic oil of oil pipe can not leak when the linkage sleeve removes, thereby make puller body and linkage sleeve synchronous motion, puller body can not take place to slide when carrying out the short distance removal, thereby can reduce the degree of wear of puller body outer wall, the effectual life who prolongs puller body.

2. The utility model discloses an utilize the design of fixed block, when the pneumatic cylinder need carry out the short distance and remove, hydraulic oil extrudees first piston, first piston extrusion fixed block, the fixed block drives and draws the ware body and accompanies linkage sleeve synchronous motion, and the one end of fixed block stops up the oil guide hole, thereby the inside hydraulic oil of fixed cylinder liner can not enter into linkage sleeve's inside extrusion and draws ware body synchronous motion, when needing to carry out the big stroke and remove, the linkage sleeve can not continue to remove by the restriction of outer slider and outer spout, the inside hydraulic oil of fixed cylinder liner will extrude the fixed block and drive and draw the ware body and remove, finally draw the ware body and can follow linkage sleeve's inside roll-off, thereby realize the purpose that the big stroke removed.

Drawings

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

FIG. 2 is a schematic diagram of an internal top view cross-sectional structure of the present invention;

fig. 3 is a schematic view of the internal front cross-section structure of the present invention.

In the figure: 1. fixing the cylinder sleeve; 2. a fixed support; 3. an oil inlet pipe; 4. an oil outlet pipe; 5. a first piston; 6. a linkage sleeve; 7. a second piston; 8. a puller body; 9. a fixed block; 10. an oil guide hole; 11. an oil guide pipe; 12. an inner chute; 13. an inner slide block; 14. an outer chute; 15. an outer slide block; 16. and (4) sealing the plug.

Detailed Description

The embodiment of the utility model discloses a tandem puller in a multi-stage hydraulic cylinder, which comprises a fixed cylinder sleeve 1, wherein two ends of the fixed cylinder sleeve 1 are fixedly sleeved with fixed supports 2, the fixed supports 2 are used for supporting the fixed cylinder sleeve 1, an oil inlet pipe 3 which is mutually communicated with the inside of the fixed cylinder sleeve 1 is fixedly embedded in the middle of the upper surface of one fixed support 2, an oil outlet pipe 4 which is mutually communicated with the inside of the fixed cylinder sleeve 1 is fixedly embedded in the middle of the upper surface of the other fixed support 2, sealing gaskets are fixedly connected with the insides of the oil inlet pipe 3 and the oil outlet pipe 4, sealing plugs 16 are respectively sleeved in the two sealing gaskets, the sealing plugs 16 can seal the oil inlet pipe 3 and the oil outlet pipe 4 under the condition of nonuse, so that external dust is prevented from entering the inside of the fixed cylinder sleeve 1, a first piston 5 is sleeved in the fixed cylinder sleeve 1, the outer wall of first piston 5 and the inner wall of fixed cylinder liner 1 laminate each other, one side fixedly connected with of first piston 5 and the linkage sleeve 6 of the mutual laminating of fixed cylinder liner 1 inner wall, linkage sleeve 6 all is provided with the sealing washer with the inside port department of fixed cylinder liner 1, with this prevent that hydraulic oil from leaking, refer to figure 2 or figure 3, the inside of linkage sleeve 6 and the inside of advancing oil pipe 3 communicate each other, the inside cover of linkage sleeve 6 is equipped with second piston 7, second piston 7 laminates each other with the inner wall of linkage sleeve 6, one side fixedly connected with of second piston 7 and the puller body 8 of the mutual laminating of fixed cylinder liner 1 inner wall, puller body 8 is used for with external part interconnect.

An oil guide pipe 11 is fixedly embedded in an inner cavity on one side of the linkage sleeve 6, referring to fig. 3, the oil guide pipe 11 is Z-shaped, one end of the oil guide pipe 11 is communicated with the inside of the linkage sleeve 6, and the oil guide pipe 11 is used for conducting hydraulic oil inside the linkage sleeve 6.

The middle part of the first piston 5 is provided with an oil guide hole 10, one side of the middle part of the second piston 7 is fixedly connected with a fixing block 9, the width of the oil guide hole 10 is smaller than that of the fixing block 9, and after the fixing block 9 and the side wall of the first piston 5 are mutually attached, hydraulic oil inside the linkage sleeve 6 cannot be exchanged with hydraulic oil inside the fixed cylinder sleeve 1.

Inner chute 12 has all been seted up to the inner chamber of 6 both sides of linkage sleeve, the inside equal sliding sleeve of two inner chutes 12 is equipped with interior slider 13, the one end of two interior sliders 13 respectively with the both sides fixed connection of second piston 7, outer spout 14 has all been seted up to the inner chamber of fixed cylinder liner 1 both sides, the inside equal sliding sleeve of two outer spout 14 is equipped with outer slider 15, the one end of two outer sliders 15 respectively with the both sides fixed connection of first piston 5, interior slider 13 can restrict first piston 5 and second piston 7 respectively with outer slider 15 and can not take place to rotate when removing.

The working principle is as follows: when the puller body 8 needs to be moved in a short distance, an operator firstly adds hydraulic oil through the oil inlet pipe 3, the hydraulic oil can extrude the first piston 5 after entering the inside of the fixed cylinder sleeve 1, the first piston 5 drives the outer slide block 14 to move in the inner part of the outer slide groove 15, the hydraulic oil inside the fixed cylinder sleeve 1 extruded by the first piston 5 is discharged from the inside of the oil outlet pipe 4, finally the first piston 5 drives the linkage sleeve 6 to move towards the outside of the fixed cylinder sleeve 1, meanwhile, the first piston 5 extrudes the fixed block 9, the fixed block 9 extrudes the second piston 7, the second piston 7 drives the puller body 8 and the linkage sleeve 6 to move synchronously, and the adding of the hydraulic oil is stopped after the puller body 8 is moved to a proper position.

When the puller body 8 needs to move in a large stroke, an operator firstly fills hydraulic oil to enable the first piston 5 to drive the outer slide block 14 to move to the maximum distance along the outer sliding groove 15, at the moment, the linkage sleeve 6 drives one end of the oil guide pipe 11 to be aligned with the lower end part of the oil outlet pipe 4, then the operator continues to fill the hydraulic oil, at the moment, the hydraulic oil directly extrudes the fixed block 9 through the inside of the oil guide hole 10, the fixed block 9 extrudes the second piston 7, the second piston 7 extrudes the hydraulic oil in the linkage sleeve 6 to flow to the inside of the oil guide pipe 11, finally, the hydraulic oil is discharged through the oil outlet pipe 4, at the moment, the second piston 7 drives the inner slide block 12 to slide in the inner sliding groove 13, and then the second piston 7 can drive the puller body 8 to slide towards the outside of the linkage sleeve 6, and further the large stroke moving operation of the puller body 8 can be completed.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an inside serial-type puller of multistage pneumatic cylinder, includes fixed cylinder liner (1), its characterized in that: fixing support (2), one of them have all been cup jointed fixedly at the both ends of fixed cylinder liner (1) the fixed middle part of fixing support (2) upper surface inlays and is equipped with the oil pipe (3) that advances who communicates each other with fixed cylinder liner (1) inside, and wherein another the fixed middle part of fixing support (2) upper surface inlays and is equipped with play oil pipe (4) that communicate each other with fixed cylinder liner (1) inside, the inside cover of fixed cylinder liner (1) is equipped with first piston (5), one side fixedly connected with of first piston (5) and linkage sleeve (6) of laminating each other of fixed cylinder liner (1) inner wall, the inside cover of linkage sleeve (6) is equipped with second piston (7), one side fixedly connected with of second piston (7) draws ware body (8) with the mutual laminating of fixed cylinder liner (1) inner wall.

2. The multi-stage hydraulic cylinder internal in-line puller according to claim 1, wherein: an oil guide pipe (11) is fixedly embedded in an inner cavity on one side of the linkage sleeve (6), and one end of the oil guide pipe (11) is communicated with the inside of the linkage sleeve (6).

3. The multi-stage hydraulic cylinder internal in-line puller according to claim 1, wherein: an oil guide hole (10) is formed in the middle of the first piston (5), and a fixed block (9) is fixedly connected to one side of the middle of the second piston (7).

4. The multi-stage hydraulic cylinder internal in-line puller according to claim 1, wherein: inner chutes (12) and two inner chutes (12) are formed in inner cavities of two sides of the linkage sleeve (6), an inner sliding block (13) and two inner sliding blocks (13) are sleeved inside the inner chutes (12) in a sliding mode, and one end of each inner sliding block (13) is fixedly connected with two sides of the second piston (7) respectively.

5. The multi-stage hydraulic cylinder internal in-line puller according to claim 1, wherein: outer sliding grooves (14) are formed in inner cavities of two sides of the fixed cylinder sleeve (1), outer sliding blocks (15) are sleeved inside the outer sliding grooves (14) in a sliding mode, and one ends of the outer sliding blocks (15) are fixedly connected with two sides of the first piston (5) respectively.

6. The multi-stage hydraulic cylinder internal in-line puller according to claim 1, wherein: the equal fixedly connected with in the inside of advancing oil pipe (3) and going out oil pipe (4) is sealed fills up, two the inside of sealed pad all is overlapped and is equipped with sealing plug (16).