Anti-shearing hydraulic oil cylinder

Abstract

The utility model provides an anti-shearing hydraulic oil cylinder, and belongs to the technical field of hydraulic oil cylinders. The anti-shearing hydraulic oil cylinder comprises an oil cylinder body and a limiting structure, the oil cylinder body comprises a cylinder body, a top seat, a base, a piston rod, a piston, a first sealing gasket and a buffering assembly, the top seat is connected with the cylinder body, the base is connected with the cylinder body, the piston rod is connected with the top seat in a sliding mode, the piston is connected with the piston rod, and the buffering assembly is connected with the limiting structure. The first sealing gasket is connected with the piston, the buffering assembly is arranged in the cylinder body, the limiting structure comprises a limiting block and a limiting groove, the limiting block is connected with the piston rod, the limiting groove is formed in the inner wall of the cylinder body, and the limiting block is connected with the limiting groove in a sliding mode. According to the anti-shearing hydraulic oil cylinder, the piston rod can be conveniently limited to rotate, it is avoided that the abrasion speed of a sealing piece is increased, and the practicability of the device is improved.

Description

Technical Field

[0001] The present application relates to the field of hydraulic cylinders, and in particular to an anti-shear hydraulic cylinder. Background Art

[0002] Hydraulic cylinder is a kind of pressure finishing process. It uses the cold plasticity of metal at room temperature and applies a certain pressure to the workpiece surface by rolling tools, so that the surface metal of the workpiece produces plastic flow and fills into the original residual concave trough, thereby reducing the surface roughness of the workpiece. Due to the plastic deformation of the rolled surface metal, the surface organization is cold hardened and the grains are refined to form a dense fibrous shape, and a residual stress layer is formed, the hardness and strength are improved, thereby improving the wear resistance, corrosion resistance and compatibility of the workpiece surface.

[0003] The current anti-shear hydraulic cylinder has a poor sealing effect, which may cause pressure leakage or oil seepage, and therefore has certain limitations.

[0004] In this regard, the Chinese patent application number is CN202222667493.7, which discloses an anti-shear hydraulic cylinder. By setting a multi-layer sealing device and multiple sealing rings, pressure leakage during the movement of the cylinder is avoided. At the same time, it also avoids the slow oil leakage of the cylinder caused by long-term use, thereby extending the service life of the hydraulic cylinder. The protective shell arranged on the outside of the cylinder can enhance the shear resistance of the cylinder and play a role in reinforcement and protection.

[0005] The above solution still has the following shortcomings during use: the piston rod may rotate during the up and down movement in the cylinder, which may easily cause the seal to wear faster, affect the sealing performance, and reduce the practicality of the device. Utility Model Content

[0006] In order to remedy the above deficiencies, the present application provides an anti-shear hydraulic cylinder, which aims to improve the problem that the piston rod may rotate during the up and down movement of the cylinder, thereby easily causing the seal to wear faster and affecting the sealing performance.

[0007] The embodiment of the present application provides an anti-shear hydraulic cylinder, including a cylinder body and a limiting structure, the cylinder body including a cylinder body, a top seat, a base, a piston rod, a piston, a first sealing pad and a buffer assembly, the top seat is connected to the cylinder body, the base is connected to the cylinder body, the piston rod is slidably connected to the top seat, the piston is connected to the piston rod, the first sealing pad is connected to the piston, the buffer assembly is arranged in the cylinder body, the buffer assembly includes a first spring, a first telescopic rod, a first buffer plate, a second spring, a second telescopic rod and a second buffer plate, the two ends of the first spring are respectively connected to the top seat and the first buffer plate, the two ends of the first telescopic rod are respectively connected to the top seat and the first buffer plate, the two ends of the second spring are respectively connected to the inner wall of the cylinder body and the second buffer plate, the two ends of the second telescopic rod are respectively connected to the inner wall of the cylinder body and the second buffer plate, the limiting structure includes a limiting block and a limiting groove, the limiting block is connected to the piston rod, the inner wall of the cylinder body is provided with the limiting groove, and the limiting block is slidably connected to the limiting groove.

[0008] In the above implementation process, by arranging the first spring, the first telescopic rod, the first buffer plate, the second spring, the second telescopic rod and the second buffer plate, the piston can be easily buffered to prevent the piston from impacting the inner wall of the cylinder body, thereby extending the service life.

[0009] In a specific embodiment, the top seat is connected to the cylinder body via a screw.

[0010] In the above implementation process, the top seat can be easily disassembled and assembled through the setting of the screw.

[0011] In a specific embodiment, a second sealing gasket is disposed in the top seat.

[0012] In the above implementation process, the sealing performance is improved by providing the second sealing gasket.

[0013] In a specific embodiment, the outer ring of the cylinder body is provided with a protective shell.

[0014] In the above implementation process, by providing a protective shell on the outer ring of the cylinder body, the shear resistance of the cylinder body can be easily improved, thereby playing a reinforcement role.

[0015] In a specific implementation manner, one end of the piston rod is threadedly connected to a fixing rod, and earrings are provided on one side of the fixing rod and the base.

[0016] In the above implementation process, a bearing is embedded on one side of the earring to facilitate the connection of the cylinder body.

[0017] In a specific embodiment, one end of the piston rod is threadedly connected with a nut.

[0018] In the above implementation process, a nut is threadedly connected to one end of the piston rod, so that the piston can be easily disassembled and assembled.

[0019] In a specific embodiment, a first oil inlet is formed through one side of the top seat, and a second oil inlet is formed through one side of the base seat.

[0020] In the above implementation process, the first oil inlet and the second oil inlet are provided to facilitate oil inlet to the cylinder.

[0021] Compared with the prior art, the beneficial effects of the present application are as follows: through the setting of the buffer assembly, it is possible to conveniently buffer the piston, prevent the piston from impacting the inner wall of the cylinder body, and extend the service life; through the movement of the limit block in the limit groove, it is convenient to limit the movement of the piston rod, restrict the rotation of the piston rod, avoid the increase in the wear speed of the seal, and improve the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the cross-sectional structure of an anti-shear hydraulic cylinder provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the structure of an anti-shear hydraulic cylinder provided in an embodiment of the present application;

[0025] Figure 3 A schematic cross-sectional structure diagram of the connection relationship between the cylinder body, the top seat, the piston rod and the buffer assembly provided in the embodiment of the present application;

[0026] Figure 4 A schematic cross-sectional structure diagram of the connection relationship between the cylinder body, base and buffer assembly provided in an embodiment of the present application.

[0027] In the figure: 10-cylinder body; 110-cylinder body; 120-top seat; 130-base; 140-piston rod; 150-piston; 160-first sealing pad; 170-buffer assembly; 171-first spring; 172-first telescopic rod; 173-first buffer plate; 174-second spring; 175-second telescopic rod; 176-second buffer plate; 180-second sealing pad; 190-fixing rod; 20-limiting structure; 210-limiting block; 220-limiting groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0029] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] Example

[0031] See also Figure 1 The present application provides an anti-shear hydraulic cylinder, including a cylinder body 10 and a limiting structure 20.

[0032] Specifically, the cylinder body 10 can buffer the piston 150, thereby preventing the piston 150 from impacting the inner wall of the cylinder body 110 and extending the service life. The limiting structure 20 limits the rotation of the piston rod 140, thereby preventing the seal from wearing faster and improving the practicality of the device.

[0033] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The oil cylinder body 10 includes a cylinder body 110, a top seat 120, a base 130, a piston rod 140, a piston 150, a first sealing gasket 160 and a buffer assembly 170. The top seat 120 is connected to the cylinder body 110, the base 130 is connected to the cylinder body 110, the piston rod 140 is slidably connected to the top seat 120, the piston 150 is connected to the piston rod 140, the first sealing gasket 160 is connected to the piston 150, and the buffer assembly 170 is arranged in the cylinder body 110. The buffer assembly 170 includes a first spring 171, a first telescopic rod 172, a first buffer plate 173, a second spring 174, a second telescopic rod 175 and a second buffer plate 176. The first The two ends of the spring 171 are respectively connected to the top seat 120 and the first buffer plate 173, the two ends of the first telescopic rod 172 are respectively connected to the top seat 120 and the first buffer plate 173, the two ends of the second spring 174 are respectively connected to the inner wall of the cylinder body 110 and the second buffer plate 176, and the two ends of the second telescopic rod 175 are respectively connected to the inner wall of the cylinder body 110 and the second buffer plate 176. Among them, through the arrangement of the first spring 171, the first telescopic rod 172, the first buffer plate 173, the second spring 174, the second telescopic rod 175 and the second buffer plate 176, the piston 150 can be easily buffered, thereby preventing the piston 150 from impacting the inner wall of the cylinder body 110 and extending the service life.

[0034] In a specific configuration, the top seat 120 is connected to the cylinder body 110 via a screw, wherein the top seat 120 can be easily assembled and disassembled by the configuration of the screw.

[0035] In a specific configuration, a second sealing gasket 180 is disposed in the top seat 120 , wherein the sealing performance is improved by the configuration of the second sealing gasket 180 .

[0036] In a specific configuration, a protective shell is provided on the outer ring of the cylinder body 110 . The protective shell is provided on the outer ring of the cylinder body 110 , thereby conveniently improving the shear resistance of the cylinder body 110 and playing a role of reinforcement.

[0037] In a specific configuration, one end of the piston rod 140 is threadedly connected to a fixing rod 190 , and both the fixing rod 190 and one side of the base 130 are provided with earrings, wherein one side of the earring is embedded with a bearing, which can facilitate the connection of the cylinder body 10 .

[0038] In a specific configuration, one end of the piston rod 140 is threadedly connected with a nut, wherein the piston 150 can be easily disassembled and assembled by threading the nut at one end of the piston rod 140 .

[0039] In the specific configuration, a first oil inlet is formed through one side of the top seat 120 , and a second oil inlet is formed through one side of the base 130 . The first oil inlet and the second oil inlet facilitate the oil inlet to the cylinder body 110 .

[0040] See also Figure 1 The limiting structure 20 includes a limiting block 210 and a limiting groove 220 . The limiting block 210 is connected to the piston rod 140 . The limiting groove 220 is formed on the inner wall of the cylinder body 110 . The limiting block 210 is slidably connected to the limiting groove 220 .

[0041] The working principle of the anti-shear hydraulic cylinder is as follows: when using the anti-shear hydraulic cylinder, the first oil inlet and the second oil inlet are provided to facilitate oil intake into the cylinder body 110, thereby driving the piston rod 140 to move in the cylinder body 110, and the limit block 210 moves in the limit groove 220, which is convenient for limiting the movement of the piston rod 140 and restricting the rotation of the piston rod 140, thereby avoiding the accelerated wear speed of the seal and improving the practicality of the device; the first spring 171, the first telescopic rod 172, the first buffer plate 173, the second spring 174, the second telescopic rod 175 and the second buffer plate 176 are provided to facilitate buffering of the piston 150, thereby avoiding the piston 150 from impacting the inner wall of the cylinder body 110 and extending the service life; and the second sealing gasket 180 is provided in the top seat 120 to improve the sealing of the cylinder body 110.

[0042] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An anti-shear hydraulic cylinder, characterized in that: include A cylinder body, wherein the cylinder body comprises a cylinder body, a top seat, a base, a piston rod, a piston, a first sealing gasket and a buffer assembly, wherein the top seat is connected to the cylinder body, the base is connected to the cylinder body, the piston rod is slidably connected to the top seat, the piston is connected to the piston rod, the first sealing gasket is connected to the piston, and the buffer assembly is arranged in the cylinder body, and the buffer assembly comprises a first spring, a first telescopic rod, a first buffer plate, a second spring, a second telescopic rod and a second buffer plate, wherein two ends of the first spring are respectively connected to the top seat and the first buffer plate, two ends of the first telescopic rod are respectively connected to the top seat and the first buffer plate, two ends of the second spring are respectively connected to the inner wall of the cylinder body and the second buffer plate, and two ends of the second telescopic rod are respectively connected to the inner wall of the cylinder body and the second buffer plate; The limiting structure comprises a limiting block and a limiting groove, wherein the limiting block is connected to the piston rod, the limiting groove is provided on the inner wall of the cylinder body, and the limiting block is slidably connected to the limiting groove.

2. The anti-shear hydraulic cylinder according to claim 1, characterized in that: The top seat is connected to the cylinder body through a screw rod.

3. The anti-shear hydraulic cylinder according to claim 1, characterized in that: A second sealing gasket is arranged in the top seat.

4. The anti-shear hydraulic cylinder according to claim 1, characterized in that: The outer ring of the cylinder body is provided with a protective shell.

5. The anti-shear hydraulic cylinder according to claim 1, characterized in that: One end of the piston rod is threadedly connected with a fixing rod, and earrings are arranged on one side of the fixing rod and the base.

6. The anti-shear hydraulic cylinder according to claim 1, characterized in that: One end of the piston rod is threadedly connected with a nut.

7. The anti-shear hydraulic cylinder according to claim 1, characterized in that: A first oil inlet is formed through one side of the top seat, and a second oil inlet is formed through one side of the base seat.

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