CN219062123U

CN219062123U - Double-stroke limiting hydraulic cylinder

Info

Publication number: CN219062123U
Application number: CN202223047724.0U
Authority: CN
Inventors: 王振
Original assignee: Yinan Tianli Hydraulic Machinery Co ltd
Current assignee: Yinan Tianli Hydraulic Machinery Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-05-23
Anticipated expiration: 2032-11-16

Abstract

The utility model relates to the technical field of hydraulic cylinders and discloses a double-stroke limiting hydraulic cylinder which comprises a hydraulic cylinder guide sleeve, wherein a piston rod is slidably arranged in the middle of the hydraulic cylinder guide sleeve, a piston head is sleeved in the middle of the piston rod, an inner cavity is formed in the hydraulic cylinder guide sleeve, the piston head is slidably arranged in the inner cavity, two ends of the piston rod are fixedly provided with stabilizing blocks, the upper ends of the two stabilizing blocks are fixedly provided with third connecting blocks, a guide rod is slidably arranged between the two third connecting blocks, and the guide rod is driven to slide together by the aid of the stabilizing blocks, the third connecting blocks and the guide rod.

Description

Double-stroke limiting hydraulic cylinder

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a double-stroke limiting hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy to do linear reciprocating motion, and the double-stroke hydraulic cylinder is a hydraulic cylinder which can input pressure oil from two sides of a piston. It is often used as a drive assembly for a jack. The actuator of the double-acting hydraulic cylinder is the main output equipment of a hydraulic motion system, the single-acting hydraulic cylinder is realized by oil pressure in one direction, and when the hydraulic cylinder returns, the hydraulic cylinder depends on external forces such as dead weight or springs, and the like, and only one end of two cavities of the hydraulic cylinder is provided with oil, and the other end of the hydraulic cylinder is contacted with air. The double-acting hydraulic cylinder has two cavities with oil, and the actions in two directions are realized by oil pressure.

When the double-stroke hydraulic cylinder is used, the piston rod can reciprocate back and forth in the hydraulic cylinder guide sleeve, when the piston rod reaches the maximum stroke or exceeds the design stroke, the moment is prolonged, the bearing capacity of the double-stroke hydraulic cylinder is deteriorated, the maximum stroke or exceeds the design stroke, the piston rod is easy to bend, and the risk of fracture can be caused when the double-stroke hydraulic cylinder is serious, so that the hydraulic cylinder can not be normally used; therefore, the existing requirements are not met, and a double-stroke limiting hydraulic cylinder is provided for the purpose.

Disclosure of Invention

The utility model provides a double-stroke limiting hydraulic cylinder, which is characterized in that a stabilizing block, a third connecting block and a guide rod are arranged, a piston rod drives the guide rod to slide together, so that the bearing capacity of the end point of the piston rod is increased, the piston rod is not easy to break, the piston rod is convenient for long-term use, the problem that when the piston rod in the background art reaches the maximum stroke or exceeds the design stroke, the moment becomes long, the bearing capacity of the piston rod becomes poor, the maximum stroke or exceeds the design stroke, the piston rod is easy to bend, and the risk of breaking occurs when serious, so that the hydraulic cylinder can not be normally used is solved.

The utility model provides the following technical scheme: the utility model provides a spacing pneumatic cylinder of double stroke, includes the pneumatic cylinder uide bushing, the mid-portion slidable mounting of pneumatic cylinder uide bushing has the piston rod, the piston head has been cup jointed at the middle part of piston rod, the inner chamber has been seted up to the inside of pneumatic cylinder uide bushing, piston head slidable mounting is in the inner chamber, the equal fixed mounting in both ends of piston rod has firm piece, two the equal fixed mounting in upper end of firm piece has the third connecting block, two slidable mounting has the guide bar between the third connecting block.

As an alternative to the double stroke limiting hydraulic cylinder of the present utility model, wherein: the hydraulic cylinder guide sleeve is characterized in that first connecting blocks are fixedly arranged at two ends of the hydraulic cylinder guide sleeve, and second connecting blocks are fixedly arranged at one ends of the first connecting blocks.

As an alternative to the double stroke limiting hydraulic cylinder of the present utility model, wherein: a fourth connecting block is inserted between the two second connecting blocks, a sleeve is fixedly installed on the fourth connecting block, and the sleeve is connected with the guide rod in a penetrating mode.

As an alternative to the double stroke limiting hydraulic cylinder of the present utility model, wherein: the hydraulic cylinder guide sleeve is internally provided with a through hole, the two first connecting blocks are respectively penetrated with a through pipe, and the through pipes are communicated with the through holes.

As an alternative to the double stroke limiting hydraulic cylinder of the present utility model, wherein: two ring bodies are fixedly arranged on the inner wall of the through pipe, and springs are fixedly arranged between the two ring bodies.

As an alternative to the double stroke limiting hydraulic cylinder of the present utility model, wherein: the periphery of the piston head is provided with a groove body, the outer wall of the piston head is also circumferentially provided with a first ball, and the first ball is arranged in the groove body and is also in sliding connection with the hydraulic cylinder guide sleeve.

As an alternative to the double stroke limiting hydraulic cylinder of the present utility model, wherein: a plurality of limiting rods are installed on the inner wall of the hydraulic cylinder guide sleeve in a punctiform manner, and second balls are installed at one end of each limiting rod in a rotary mode.

As an alternative to the double stroke limiting hydraulic cylinder of the present utility model, wherein: the limiting rod is positioned in the inner cavity and is arranged at a position close to two side walls of the hydraulic cylinder guide sleeve.

The utility model has the following beneficial effects:

1. this spacing pneumatic cylinder of double stroke through setting up firm piece, third connecting block, guide bar, and the piston rod drives the guide bar and slides together, has increased the bearing capacity at piston rod extreme point, and difficult fracture is convenient for use for a long time, and the guide bar passes through the sleeve to be connected with the fourth connecting block, telescopic fixed in position has increased the compressive resistance of guide bar, is difficult for buckling.

2. This spacing pneumatic cylinder of double stroke through setting up siphunculus, ring body and spring, and flexible effect of spring can cushion oil, has slowed down the damage that the impact force of oil led to the fact the pneumatic cylinder uide bushing inner wall, and be convenient for use for a long time, through setting up the cell body, has reduced the area of contact of piston head and pneumatic cylinder uide bushing, has reduced the damage that piston head friction led to the fact the pneumatic cylinder uide bushing inner wall, has increased the life of this device.

3. This spacing pneumatic cylinder of double stroke through setting up gag lever post and second ball, and the second ball slides about the piston rod outer wall, has guaranteed the stability at piston rod middle part to a great extent, has guaranteed that the piston rod operates on a straight line all the time to a great extent, further increases this device bearing capacity.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic view of the overall rear end structure of the present utility model.

Fig. 3 is an overall cross-sectional view of the present utility model.

Fig. 4 is an enlarged view of fig. 3 a in accordance with the present utility model.

In the figure: 1. a hydraulic cylinder guide sleeve; 11. an inner cavity; 12. a through hole; 2. a first connection block; 3. a second connection block; 4. a fourth connecting block; 44. a stabilizing block; 43. a third connecting block; 42. a guide rod; 45. a sleeve; 5. a piston rod; 6. a through pipe; 61. a ring body; 62. a spring; 7. a piston head; 71. a tank body; 72. a first ball; 8. a limit rod; 81. and a second ball.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

The present embodiment is intended to facilitate solving the problem that when the piston rod 5 reaches the maximum stroke or exceeds the design stroke, the moment becomes longer, the bearing capacity thereof becomes worse, the maximum stroke or exceeds the design stroke is reached, the piston rod 5 is easy to bend, the risk of fracture can also occur when serious, and the problem that the hydraulic cylinder cannot be used normally can be caused, please refer to fig. 1-4, a double-stroke limiting hydraulic cylinder comprises a hydraulic cylinder guide sleeve 1, a piston rod 5 is slidably mounted in the middle of the hydraulic cylinder guide sleeve 1, a piston head 7 is sleeved in the middle of the piston rod 5, an inner cavity 11 is provided in the hydraulic cylinder guide sleeve 1, the piston head 7 is slidably mounted in the inner cavity 11, two ends of the piston rod 5 are fixedly provided with stabilizing blocks 44, the upper ends of the two stabilizing blocks 44 are fixedly provided with third connecting blocks 43, and a guide rod 42 is slidably mounted between the two third connecting blocks 43.

When the hydraulic cylinder guide sleeve is used, the piston rod 5 slides left and right relative to the hydraulic cylinder guide sleeve 1, the piston head 7 slides in the inner cavity 11 of the hydraulic cylinder guide sleeve 1, after the piston rod 5 is gradually stretched, one end of the piston rod 5 drives the stabilizing block 44 to slide on the guide rod 42, the guide rod 42 and the piston rod 5 are arranged in parallel, the bearing capacity of the end point of the piston rod 5 is increased, the hydraulic cylinder guide sleeve is not easy to break, and long-term use is facilitated.

The two ends of the hydraulic cylinder guide sleeve 1 are fixedly provided with first connecting blocks 2, and one end of each first connecting block 2 is fixedly provided with a second connecting block 3.

Through the cooperation of first connecting block 2, second connecting block 3 and fourth connecting block 4, increased the bearing capacity of pneumatic cylinder uide bushing 1, increased its intensity, peg graft between two second connecting blocks 3 have fourth connecting block 4, fixed mounting has sleeve 45 on the fourth connecting block 4, sleeve 45 and guide bar 42 alternate to be connected, and guide bar 42 passes through sleeve 45 to be connected with fourth connecting block 4, and sleeve 45's fixed in position has increased guide bar 42's compressive resistance, is difficult for buckling.

Example 2

The present embodiment aims to solve the problem that after the piston rod 5 and the hydraulic cylinder guide sleeve 1 are used for a long time, the hydraulic cylinder guide sleeve 1 is damaged by oil impact and friction of the piston head 7, and the service life is affected, and the present embodiment is an improvement made on the basis of the embodiment 1, specifically, referring to fig. 1-4, a through hole 12 is further formed in the hydraulic cylinder guide sleeve 1, through pipes 6 are inserted into the two first connecting blocks 2, and the through pipes 6 are communicated with the through hole 12.

Through setting up two siphunculus 6, two siphunculus 6 all can realize advancing oil, are convenient for realize the double stroke effect of pneumatic cylinder.

Two ring bodies 61 are fixedly arranged on the inner wall of the through pipe 6, and a spring 62 is fixedly arranged between the two ring bodies 61.

The spring 62 has elasticity, and the siphunculus 6 can drive spring 62 flexible when business turn over oil, and the flexible effect of spring 62 can cushion oil, has slowed down the damage that the impact force of oil caused hydraulic cylinder uide bushing 1 inner wall, is convenient for use for a long time.

The outer periphery of the piston head 7 is provided with a groove body 71, the outer wall of the piston head 7 is also provided with a first ball 72 in the circumferential direction, and the first ball 72 is arranged in the groove body 71 and is also in sliding connection with the hydraulic cylinder guide sleeve 1.

Through setting up the cell body 71, reduced the area of contact of piston head 7 and pneumatic cylinder uide bushing 1, and then reduced friction and wearing and tearing between piston head 7 and the pneumatic cylinder uide bushing 1, through setting up first ball 72, piston head 7 when sliding, first ball 72 slides along pneumatic cylinder uide bushing 1, has increased the gliding flexibility of piston head 7, has reduced the damage that piston head 7 friction caused pneumatic cylinder uide bushing 1 inner wall, has increased the life of this device.

Example 3

The present embodiment is intended to promote solving the problem of how to further increase the bearing capacity and service life of the device, and is an improvement made on the basis of embodiment 1, specifically, referring to fig. 1-4, a plurality of limit rods 8 are installed on the inner wall of the hydraulic cylinder guide sleeve 1 in a punctiform manner, and a second ball 81 is installed at one end of the limit rod 8 in a rotary manner.

When the piston rod 5 slides, the piston heads 7 and the stabilizing blocks 44 are respectively arranged at the two ends of the piston rod, and the limiting rod 8 and the second balls 81 are arranged to slide relative to the outer wall of the piston rod 5, so that the stability of the middle part of the piston rod 5 is greatly ensured, the piston rod 5 is ensured to operate on a straight line all the time to a great extent, and the bearing capacity of the device is further increased.

The limiting rods 8 are located in the inner cavity 11 and are arranged at positions close to two side walls of the hydraulic cylinder guide sleeve 1, limiting performance is achieved, the piston head 7 can only slide between the two limiting rods 8, the longest sliding distance of the piston rod 5 is reduced, torque is reduced, bearing capacity is increased, and service life is prolonged.

It is noted that relational terms such as first and second, and the like are 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. Moreover, 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.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims

1. The utility model provides a spacing pneumatic cylinder of double stroke, includes pneumatic cylinder uide bushing (1), its characterized in that: the middle part slidable mounting of pneumatic cylinder uide bushing (1) has piston rod (5), piston head (7) have been cup jointed at the middle part of piston rod (5), inner chamber (11) have been seted up to the inside of pneumatic cylinder uide bushing (1), piston head (7) slidable mounting is in inner chamber (11), the both ends of piston rod (5) are all fixed mounting has firm piece (44), two the equal fixed mounting in upper end of firm piece (44) has third connecting block (43), two slidable mounting has guide bar (42) between third connecting block (43).

2. The double stroke limit hydraulic cylinder as claimed in claim 1 wherein: the hydraulic cylinder guide sleeve is characterized in that first connecting blocks (2) are fixedly arranged at two ends of the hydraulic cylinder guide sleeve (1), and second connecting blocks (3) are fixedly arranged at one ends of the first connecting blocks (2).

3. A double stroke limiting hydraulic cylinder as claimed in claim 2 wherein: a fourth connecting block (4) is inserted between the two second connecting blocks (3), a sleeve (45) is fixedly installed on the fourth connecting block (4), and the sleeve (45) is connected with the guide rod (42) in a penetrating mode.

4. A double stroke limiting hydraulic cylinder as claimed in claim 2 wherein: the hydraulic cylinder guide sleeve (1) is internally provided with a through hole (12), the two first connecting blocks (2) are respectively inserted with a through pipe (6), and the through pipes (6) are communicated with the through hole (12).

5. The double stroke limit hydraulic cylinder as claimed in claim 4 wherein: two ring bodies (61) are fixedly arranged on the inner wall of the through pipe (6), and springs (62) are fixedly arranged between the two ring bodies (61).

6. The double stroke limit hydraulic cylinder as claimed in claim 1 wherein: the periphery of the piston head (7) is provided with a groove body (71), the outer wall of the piston head (7) is also circumferentially provided with a first ball (72), and the first ball (72) is arranged in the groove body (71) and is also in sliding connection with the hydraulic cylinder guide sleeve (1).

7. The double stroke limit hydraulic cylinder as claimed in claim 6 wherein: a plurality of limiting rods (8) are installed on the inner wall of the hydraulic cylinder guide sleeve (1) in a punctiform manner, and second balls (81) are installed at one end of each limiting rod (8) in a rotary mode.

8. The double stroke limit hydraulic cylinder as recited in claim 7 wherein: the limiting rod (8) is positioned in the inner cavity (11) and is arranged at a position close to the two side walls of the hydraulic cylinder guide sleeve (1).