High-strength wear-resistant hydraulic oil cylinder body

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a high-strength abrasion-resistant hydraulic oil cylinder body which comprises an oil cylinder body, a sealing sleeve is installed on the left side wall of the oil cylinder body, and a piston rod is arranged in the oil cylinder body. A protection structure is installed on the outer side of the piston rod and comprises a hand-screwing threaded plate, the hand-screwing threaded plate is movably installed on the outer side of the left end of the piston rod through threads, an outer movable sleeve is fixedly connected to the right side wall of the hand-screwing threaded plate, and a movable groove is formed in the right end of the outer movable sleeve; and an inner fixed sleeve is mounted on the inner side of the outer movable sleeve in a sliding manner. The outer movable sleeve and the inner fixed sleeve are arranged on the outer side of the piston rod, and the inner fixed sleeve can move on the outer movable sleeve when the piston rod extends out and can cover the outer side of the piston rod, so that the surface of the piston rod is protected, the surface of the piston rod is prevented from being abraded, the sealing performance of the device is kept, and the use experience of the device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a high-strength and wear-resistant hydraulic oil cylinder body. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy. However, when operating continuously under high-pressure conditions, the piston rod of a general hydraulic cylinder is prone to bending and wear, and scratches appear on the surface, which will damage the sealing elements and the cylinder body, causing leakage inside the cylinder body, resulting in insufficient pressure inside the cylinder body, failing to reach the required pressure, damaging the hydraulic cylinder, thereby affecting work efficiency and wasting time.

[0003] In this regard, China has applied for patent number CN202121809549.7, which discloses a high-strength, wear-resistant hydraulic cylinder body, including a cylinder base, a guide sleeve, a piston, a vertical bearing, a cylinder groove, and an extrusion chamber. Cylinder port 2 is set on the right side of the cylinder base, and the cylinder body is welded on the left and right sides of the upper end of the cylinder base. Liquid oil inlet and outlet are set near the inner side of the cylinder body. An anti-wear ring is set on the front of the piston near the bottom end, and a sealing ring is set on the upper side of the anti-wear ring. The piston rod is welded to the upper end of the piston, and the piston rod head is welded to the other end of the piston rod through a guide sleeve. In this high-strength, wear-resistant hydraulic cylinder body, the steel balls on the vertical bearing in the extrusion chamber just touch the piston rod, and the steel balls are in rotational contact to reduce friction.

[0004] The cylinder body can reduce the friction between the piston rod and the guide sleeve by setting a vertical bearing, avoiding damage to the piston rod and causing sealing problems. However, when the actual oil cylinder is in use, its piston rod needs to be extended frequently, which increases the risk of piston rod damage and affects the user experience.

[0005] Therefore, in order to solve the above problems, a high-strength and wear-resistant hydraulic cylinder body is proposed. Utility Model Content

[0006] The purpose of the present utility model is to provide a high-strength and wear-resistant hydraulic cylinder body to solve the problem that the cylinder body in the prior art mentioned in the above background technology can reduce the friction between the piston rod and the guide sleeve by setting a vertical bearing, thereby avoiding damage to the piston rod and causing sealing problems. However, when the actual cylinder is in use, its piston rod needs to be extended frequently, which increases the risk of damage to the piston rod and affects the user experience.

[0007] To achieve the above object, the utility model provides the following technical solution: a high-strength and wear-resistant hydraulic cylinder body, comprising: a cylinder body, a sealing sleeve is installed on the left side wall of the cylinder body, and a piston rod is arranged inside the cylinder body;

[0008] A protective structure is installed on the outside of the piston rod, and the protective structure includes a hand-screwed threaded plate, which is installed on the outside of the left end of the piston rod through threaded movement. An outer movable sleeve is fixedly connected to the right side wall of the hand-screwed threaded plate, and a movable groove is provided at the right end of the outer movable sleeve. An inner fixed sleeve is slidably installed on the inner side of the outer movable sleeve, and a bolt is threadedly connected to the right end surface of the inner fixed sleeve, and a spring is fixedly connected to the inner wall of the inner fixed sleeve.

[0009] Preferably, friction ridges are provided on the outer wall of the hand-screwed threaded plate.

[0010] Preferably, the outer movable sleeve and the inner fixed sleeve are engaged with each other, and both the outer movable sleeve and the inner fixed sleeve are sleeved on the outer side of the left end of the piston rod.

[0011] Preferably, the inner wall of the inner fixing sleeve is in contact with the outer wall of the sealing sleeve.

[0012] Preferably, the bolt passes through the outer movable sleeve via the movable groove, and the bolt abuts against the outer wall of the sealing sleeve.

[0013] Preferably, one end of the spring is fixedly connected to the right side wall of the hand-screwed threaded plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention arranges an outer movable sleeve and an inner fixed sleeve on the outer side of the piston rod, and the inner fixed sleeve can move on the outer movable sleeve when the piston rod is extended, and can cover the outer side of the piston rod to protect the surface of the piston rod, prevent the surface of the piston rod from being worn, maintain the sealing of the device, and ensure the user experience of the device.

[0015] The utility model is provided with a protective structure, and the inner fixing sleeve is arranged on the outer side of the piston rod and the sealing sleeve, so that the right side wall of the inner fixing sleeve abuts against the left side wall of the oil cylinder body, and the inner fixing sleeve fits the sealing sleeve, and then the hand-screwed threaded plate is sleeved on the outer side of the piston rod and rotated, and the hand-screwed threaded plate is threadedly connected with the piston rod, and then the bolt is rotated, and the bolt is threadedly connected with the inner fixing sleeve. When the bolt is rotated, it approaches the sealing sleeve, so that the bolt abuts against the sealing sleeve, and the inner fixing sleeve can be fixed to the outer side of the sealing sleeve, and the assembly is completed. The piston rod is removed from the oil cylinder body. When the hand-turned threaded plate moves out of the oil cylinder, the outer sleeve slides on the outside of the inner sleeve, and the bolt moves out of the bolt. When the hand-turned threaded plate moves out of the oil cylinder, the outer sleeve moves away from the inner sleeve, causing the spring to stretch internally. The outer sleeve cooperates with the inner sleeve to cover the outside of the piston rod, which can shield and protect the piston rod and avoid wear on the surface of the piston rod that moves in the oil cylinder body during use. The piston rod can be kept intact, the sealing of the device is guaranteed, and the use experience of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic front view of the structure of the present utility model;

[0017] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 3 This is a schematic front cross-sectional view of the protective structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the front cross-sectional structure explosion of the protective structure of the present invention.

[0020] In the figure: 1. Cylinder body; 11. Sealing sleeve; 12. Piston rod; 2. Protective structure; 21. Hand-screwed threaded plate; 22. Outer movable sleeve; 23. Movable groove; 24. Inner fixed sleeve; 25. Bolt; 26. Spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1-4 , an embodiment provided by the utility model:

[0023] The oil cylinder body 1, sealing sleeve 11 and piston rod 12 used in this application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described here in detail.

[0024] A high-strength and wear-resistant hydraulic cylinder body comprises: a cylinder body 1, a sealing sleeve 11 is installed on the left side wall of the cylinder body 1, and a piston rod 12 is arranged inside the cylinder body 1;

[0025] A protective structure 2 is installed on the outside of the piston rod 12. The protective structure 2 includes a hand-screwed threaded plate 21, which is installed on the outside of the left end of the piston rod 12 through threaded movement. An outer movable sleeve 22 is fixedly connected to the right side wall of the hand-screwed threaded plate 21. A movable groove 23 is provided at the right end of the outer movable sleeve 22. An inner fixed sleeve 24 is slidably installed on the inner side of the outer movable sleeve 22. A bolt 25 is threadedly connected to the right end surface of the inner fixed sleeve 24, and a spring 26 is fixedly connected to the inner wall of the inner fixed sleeve 24. By arranging the outer movable sleeve 22 and the inner fixed sleeve 24 on the outside of the piston rod 12, the inner fixed sleeve 24 can move on the outer movable sleeve 22 when the piston rod 12 is extended, and can cover the outside of the piston rod 12 to protect the surface of the piston rod 12, avoid wear on the surface of the piston rod 12, maintain the sealing of the device, and ensure the user experience of the device.

[0026] Furthermore, friction ridges are provided on the outer wall of the hand-screw thread plate 21 . The setting of the friction ridges can facilitate the hand-screw thread plate 21 to be screwed onto the outer side of the piston rod 12 , thereby realizing convenient disassembly and assembly between the protective structure 2 and the piston rod 12 .

[0027] Furthermore, the outer movable sleeve 22 and the inner fixed sleeve 24 are engaged with each other. Both the outer movable sleeve 22 and the inner fixed sleeve 24 are sleeved on the outer side of the left end of the piston rod 12. The outer movable sleeve 22 can be telescopically movable on the outside of the inner fixed sleeve 24 without falling off. The outer movable sleeve 22 cooperates with the inner fixed sleeve 24 to protect the surface of the piston rod 12, prevent the surface of the piston rod 12 from being worn, maintain the sealing of the device, and ensure the user experience of the device.

[0028] Furthermore, the inner wall of the inner fixed sleeve 24 fits with the outer wall of the sealing sleeve 11, and the inner fixed sleeve 24 can be connected to the sealing sleeve 11 by a bolt 25, so that the inner fixed sleeve 24 can be separated from the hand-screwed threaded plate 21 when the piston rod 12 is extended and moved, so that the outer movable sleeve 22 and the inner fixed sleeve 24 are stretched and lengthened, thereby ensuring the protection effect of the piston rod 12.

[0029] Furthermore, the bolt 25 passes through the outer movable sleeve 22 through the movable groove 23, and the bolt 25 abuts against the outer wall of the sealing sleeve 11. The bolt 25 can be moved out of the movable groove 23 when the outer movable sleeve 22 moves, so as to facilitate the fixing of the inner fixed sleeve 24 inside the outer movable sleeve 22 on the sealing sleeve 11.

[0030] Furthermore, one end of the spring 26 is fixedly connected to the right side wall of the hand-screwed threaded plate 21. The setting of the spring 26 allows the outer movable sleeve 22 and the inner fixed sleeve 24 to be overlapped and stored before the protective structure 2 is installed, reducing space occupancy and avoiding disarray, making it convenient to carry and install.

[0031] Working principle: During installation, the inner fixing sleeve 24 is sleeved on the outer side of the piston rod 12 and the sealing sleeve 11, so that the right side wall of the inner fixing sleeve 24 abuts against the left side wall of the cylinder body 1, and the inner fixing sleeve 24 fits the sealing sleeve 11. Then, the hand-screwed threaded plate 21 is sleeved on the outer side of the piston rod 12 and rotated. The hand-screwed threaded plate 21 is threadedly connected to the piston rod 12. Then, the bolt 25 is rotated. The bolt 25 is threadedly connected to the inner fixing sleeve 24. When the bolt 25 rotates, it approaches the sealing sleeve 11, so that the bolt 25 abuts against the sealing sleeve 11, and the inner fixing sleeve 24 can be fixed to the outer side of the sealing sleeve 11, and the assembly is completed.

[0032] When in use, the piston rod 12 extends from the inner side of the cylinder body 1. When the piston rod 12 is extended, it will drive the hand-screwed threaded plate 21 to move. The hand-screwed threaded plate 21 will drive the outer movable sleeve 22 to move. The outer movable sleeve 22 will slide on the outside of the inner fixed sleeve 24, and the bolt 25 will be moved out of the bolt 25. The hand-screwed threaded plate 21 will move away from the inner fixed sleeve 24 when moving, so that the spring 26 is stretched. The outer movable sleeve 22 cooperates with the inner fixed sleeve 24 to cover the outside of the piston rod 12, which can shield and protect the piston rod 12, avoid wear on the surface of the part of the piston rod 12 that moves in the cylinder body 1 during use, keep the piston rod 12 intact, ensure the sealing of the device, and improve the user experience of the device.

[0033] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A high-strength, wear-resistant hydraulic cylinder body, comprising: An oil cylinder body (1), a sealing sleeve (11) being installed on the left side wall of the oil cylinder body (1), and a piston rod (12) being provided inside the oil cylinder body (1); Its characteristics are: A protective structure (2) is installed on the outer side of the piston rod (12), and the protective structure (2) includes a hand-screwed threaded plate (21). The hand-screwed threaded plate (21) is installed on the outer side of the left end of the piston rod (12) through threaded movement. An outer movable sleeve (22) is fixedly connected to the right side wall of the hand-screwed threaded plate (21), a movable groove (23) is provided at the right end of the outer movable sleeve (22), an inner fixed sleeve (24) is slidably installed on the inner side of the outer movable sleeve (22), a bolt (25) is threadedly connected to the right end surface of the inner fixed sleeve (24), and a spring (26) is fixedly connected to the inner wall of the inner fixed sleeve (24).

2. The high-strength, wear-resistant hydraulic cylinder body according to claim 1, characterized in that: The outer wall of the hand-screwed threaded plate (21) is provided with friction ridges.

3. The high-strength, wear-resistant hydraulic cylinder body according to claim 1, characterized in that: The outer movable sleeve (22) and the inner fixed sleeve (24) are engaged with each other, and both the outer movable sleeve (22) and the inner fixed sleeve (24) are sleeved on the outer side of the left end of the piston rod (12).

4. The high-strength, wear-resistant hydraulic cylinder body according to claim 1, characterized in that: The inner wall of the inner fixing sleeve (24) is in contact with the outer wall of the sealing sleeve (11).

5. The high-strength, wear-resistant hydraulic cylinder body according to claim 1, characterized in that: The bolt (25) passes through the outer movable sleeve (22) via the movable groove (23), and the bolt (25) abuts against the outer wall of the sealing sleeve (11).

6. The high-strength, wear-resistant hydraulic cylinder body according to claim 1, characterized in that: One end of the spring (26) is fixedly connected to the right side wall of the hand-screwed threaded plate (21).

Images