CN215370410U

CN215370410U - High-abrasion-resistance guide structure for hydraulic cylinder

Info

Publication number: CN215370410U
Application number: CN202121390311.5U
Authority: CN
Inventors: 张济平; 张洪刚; 师贞彦
Original assignee: Hebei Shaoyue Machinery Technology Co ltd
Current assignee: Hebei Shaoyue Machinery Technology Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-12-31
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a high-wear-resistance guide structure for a hydraulic cylinder, and particularly relates to the technical field of hydraulic cylinders. According to the utility model, the wear-resistant mechanism is arranged, so that the effect of improving the wear resistance of the piston rod is achieved by reducing the friction force, and meanwhile, part of the friction force can enable the pulley to slide on the sliding rail, so that the traditional guide ring direct contact guide mode can be converted into a rolling mode, the friction force between the piston plate and the guide ring is greatly reduced, the piston rod can be prevented from being damaged due to friction, the wear resistance of the piston rod is greatly improved, and the piston rod can be guided while the wear resistance is improved.

Description

High-abrasion-resistance guide structure for hydraulic cylinder

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a high-wear-resistance guide structure for a hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The hydraulic cylinder is an actuating element in a hydraulic transmission system and is an energy conversion device for converting hydraulic energy into mechanical energy, and a piston rod in the hydraulic cylinder generally needs a guide structure for guiding when moving.

Pneumatic cylinder on the existing market leads to, generally leads to or leads to through fixed guide structure through setting up the guide ring, but these structures mostly can produce great frictional force with the piston rod, and long-time the use can lead to the piston rod wearing and tearing serious.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above defects in the prior art, embodiments of the present invention provide a high wear-resistant guide structure for a hydraulic cylinder, which can convert the traditional guide ring direct contact guide manner into a rolling manner by providing a wear-resistant mechanism, thereby greatly reducing the friction force between a piston plate and a guide ring, preventing the piston rod from being damaged due to friction, greatly improving the wear resistance of the piston rod, and guiding the piston rod while improving the wear resistance, so as to solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-wear-resistance guide structure for a hydraulic cylinder comprises a piston rod, wherein a wear-resistance mechanism is arranged on the outer side of the piston rod;

wear-resisting mechanism includes hydraulic cylinder body, hydraulic cylinder body sets up in the piston rod outside, the piston rod bottom runs through hydraulic cylinder body and extends to the hydraulic cylinder body outside, be provided with the sleeve between hydraulic cylinder body and the piston rod, hydraulic cylinder body inner wall is equipped with the slide rail, the slide rail bottom is provided with the fixed gag lever post that is equipped with, the fixed ball that is equipped with in gag lever post one side, the slide rail outside is equipped with the pulley, the pulley both sides are provided with the limiting plate, the inside dwang, two that is provided with of pulley be provided with the gyro wheel between the limiting plate, the inside rotary rod that is provided with of gyro wheel, the limiting plate outside is equipped with the connecting plate.

In a preferred embodiment, the hydraulic cylinder block comprises a second housing and a second housing, and a dismounting mechanism is arranged between the first housing and the second housing, and the dismounting mechanism comprises a fixing plate.

In a preferred embodiment, the fixing plate is disposed at both sides of the second housing and the second housing, and a side surface of the fixing plate is provided with a first screw hole.

In a preferred embodiment, a sealing rubber strip is arranged between the two fixing plates, a second threaded hole is formed in one side surface of the sealing rubber strip, and bolts are connected to the first threaded hole and the second threaded hole in a threaded mode.

In a preferred embodiment, a nut is screwed on one side of the bolt, and the bolt side penetrates through the fixing plate and the sealing rubber strip in sequence and extends to one side of the sealing rubber strip.

In a preferred embodiment, the number of the rollers, the pulleys and the balls is set to be multiple, and the pulleys are connected with the sliding rails in a sliding mode.

In a preferred embodiment, the rotating lever side penetrates the stopper plate and extends to the stopper plate side, and the rotating lever side penetrates the stopper plate and extends to the stopper plate side.

The utility model has the technical effects and advantages that:

1. by arranging the wear-resistant mechanism, the traditional guide mechanism is replaced by the roller, when the piston rod moves, the roller can roll on the surface of the piston rod, so that the friction force of the piston rod is reduced by rolling, the wear-resistant effect of the piston rod is improved by reducing the friction force, and meanwhile, part of the friction force can enable the pulley to slide on the sliding rail, so that the friction force generated when part of the piston rod moves is counteracted in such a way, and the wear resistance of the piston rod is improved due to further smaller friction force;

2. through setting up the disassembly body, the nut in the rotatory bolt outside makes the screw thread take out from the bolt, rotates the bolt afterwards, makes the bolt take out from the first screw hole on two fixed plates and the second screw hole on the joint strip, stimulates first shell and second shell simultaneously afterwards, makes first shell and second shell separation, accomplishes the dismantlement of hydraulic cylinder body, conveniently maintains the pneumatic cylinder, and it is simple convenient to dismantle, can in time maintain when the pneumatic cylinder damages.

Drawings

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

FIG. 2 is a cross-sectional structural view of the present invention.

Fig. 3 is a schematic perspective view of the hydraulic cylinder according to the present invention.

Fig. 4 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

Fig. 5 is a schematic structural diagram of the detaching mechanism of the present invention.

The reference signs are: 1. a piston rod; 2. a hydraulic cylinder block; 21. a first housing; 22. a second housing; 3. a sleeve; 4. a slide rail; 5. a limiting rod; 6. a ball bearing; 7. a pulley; 8. a limiting plate; 9. rotating the rod; 10. a roller; 11. rotating the rod; 12. a connecting plate; 13. a fixing plate; 14. a first threaded hole; 15. sealing rubber strips; 16. a second threaded hole; 17. a bolt; 18. and a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The high wear-resistant guide structure for the hydraulic cylinder shown in the attached figures 1-5 comprises a piston rod 1, wherein a wear-resistant mechanism is arranged on the outer side of the piston rod 1;

wear-resisting mechanism includes hydraulic cylinder body 2, hydraulic cylinder body 2 sets up in the 1 outside of piston rod, 1 bottom of piston rod runs through hydraulic cylinder body 2 and extends to the 2 outsides of hydraulic cylinder body, be provided with sleeve 3 between hydraulic cylinder body 2 and the

piston rod

1, 2 inner walls of hydraulic cylinder body are equipped with

slide rail

4, 4 bottoms of slide rail are provided with fixed gag lever post 5 that is equipped with, the fixed ball 6 that is equipped with in gag lever post 5 one side, 4 outsides of slide rail are equipped with

pulley

7, 7 both sides of pulley are provided with limiting plate 8, the inside dwang 9 that is provided with of pulley 7, be provided with gyro wheel 10 between two limiting plates 8, the inside rotary rod 11 that is provided with of gyro wheel 10, the 8 outsides of limiting plate are equipped with connecting plate 12.

As shown in fig. 3 and 5, the hydraulic cylinder block 2 includes a first casing 21 and a second casing 22, and a detaching mechanism is provided between the first casing 21 and the second casing 22, and the detaching mechanism includes a fixing plate 13 so that the hydraulic cylinder block 2 can be detached into the first casing 21 and the second casing 22.

As shown in fig. 3 and 5, the fixing plate 13 is disposed on both sides of the first housing 21 and the second housing 22, and a side surface of the fixing plate 13 is provided with a first screw hole 14, so that the bolt 17 can form a connection between the two fixing plates 13 by connecting with the first screw hole 14.

As shown in fig. 3 and 5, a sealing rubber strip 15 is arranged between the two fixing plates 13, a second threaded hole 16 is formed in one side surface of the sealing rubber strip 15, bolts 17 are screwed into the first threaded hole 14 and the second threaded hole 16, and the stability of the two fixing plates 13 can be improved by screwing the bolts 17 into the first threaded hole 14 and the second threaded hole 16.

As shown in fig. 3 and 5, a nut 18 is connected to one side of the bolt 17 through threads, one side of the bolt 17 sequentially penetrates through the fixing plate 13 and the sealing rubber strip 15 and extends to one side of the sealing rubber strip 15, and the nut 18 can fix the bolt 17 and prevent the bolt 17 from loosening to cause instability after the hydraulic cylinder body 2 is fixed.

As shown in fig. 1 and 2, the number of the rollers 10, the pulleys 7 and the balls 6 is set to be multiple, the pulleys 7 are connected with the sliding rails 4 in a sliding manner, the moving friction force of the piston rod 1 is further reduced, and the wear resistance of the piston rod 1 is improved.

As shown in fig. 1, 2 and 4, the limiting plate 8 is run through and extends to one side of the limiting plate 8 on one side of the rotating rod 9, the limiting plate 8 is run through and extends to one side of the limiting plate 8 on one side of the rotating rod 11, the rotating rod 9 is enabled to drive the pulley 7 to rotate, and the roller 10 can be driven to rotate by the rotating rod 11.

The working principle of the utility model is as follows: when the hydraulic cylinder is telescopic, firstly, the piston rod 1 moves, the roller 10 on the outer side of the piston rod 1 rolls to play a positioning role on the piston rod 1, meanwhile, the pulley 7 on one side of the roller 10 slides on the slide rail 4 on the inner wall of the hydraulic cylinder body 2 under the influence of a part of friction force, so that the piston rod 1 is positioned by the roller 10 when moving up and down, the friction force of the roller 10 when sliding is greatly reduced, meanwhile, the pulley 7 on one side of the roller 10 is in sliding connection with the slide rail 4, the friction force is further reduced, so that the friction force of the piston rod 1 when moving is reduced, when disassembling, firstly, the nut 18 on the outer side of the bolt 17 is rotated to take out threads from the bolt 17, then, the bolt 17 is rotated to take out from the first threaded hole 14 on the two fixing plates 13 and the second threaded hole 16 on the sealing rubber strip 15, then, the first shell 21 and the second shell 22 are pulled simultaneously, the first shell 21 and the second shell 22 are separated, the hydraulic cylinder body 2 is disassembled, and the hydraulic cylinder is convenient to maintain.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the utility model can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. A high wear-resistant guide structure for a hydraulic cylinder comprises a piston rod (1), and is characterized in that: a wear-resistant mechanism is arranged on the outer side of the piston rod (1);

the wear-resistant mechanism comprises a hydraulic cylinder body (2), the hydraulic cylinder body (2) is arranged on the outer side of the piston rod (1), the bottom of the piston rod (1) penetrates through the hydraulic cylinder body (2) and extends to the outer side of the hydraulic cylinder body (2), a sleeve (3) is arranged between the hydraulic cylinder body (2) and the piston rod (1), a slide rail (4) is arranged on the inner wall of the hydraulic cylinder body (2), a limiting rod (5) is fixedly arranged at the bottom of the slide rail (4), a ball (6) is fixedly arranged on one side of the limiting rod (5), a pulley (7) is arranged on the outer side of the sliding rail (4), limiting plates (8) are arranged on two sides of the pulley (7), a rotating rod (9) is arranged in the pulley (7), a roller (10) is arranged between the two limiting plates (8), the roller (10) is internally provided with a rotating rod (11), and the outer side of the limiting plate (8) is provided with a connecting plate (12).

2. A high wear resistant guide structure for a hydraulic cylinder as set forth in claim 1, wherein: the hydraulic cylinder body (2) comprises a first shell (21) and a second shell (22), wherein a dismounting mechanism is arranged between the first shell (21) and the second shell (22), and the dismounting mechanism comprises a fixing plate (13).

3. A high wear resistant guide structure for a hydraulic cylinder as set forth in claim 2, wherein: the fixing plate (13) is arranged on two sides of the first shell (21) and the second shell (22), and a first threaded hole (14) is formed in one side surface of the fixing plate (13).

4. A high wear resistant guide structure for a hydraulic cylinder as set forth in claim 3, wherein: a sealing rubber strip (15) is arranged between the two fixing plates (13), a second threaded hole (16) is formed in one side surface of the sealing rubber strip (15), and bolts (17) are connected with the inner parts of the first threaded hole (14) and the second threaded hole (16) in a threaded mode.

5. A high wear resistant guide structure for a hydraulic cylinder as set forth in claim 4, wherein: and one side of the bolt (17) is in threaded connection with a nut (18), and one side of the bolt (17) sequentially penetrates through the fixing plate (13) and the sealing rubber strip (15) and extends to one side of the sealing rubber strip (15).

6. A high wear resistant guide structure for a hydraulic cylinder as set forth in claim 1, wherein: the quantity of gyro wheel (10), pulley (7) and ball (6) all sets up to a plurality ofly, pulley (7) and slide rail (4) sliding connection.

7. A high wear resistant guide structure for a hydraulic cylinder as set forth in claim 1, wherein: dwang (9) one side runs through limiting plate (8) and extends to limiting plate (8) one side, limiting plate (8) and extension to limiting plate (8) one side are run through to rotary rod (11) one side.