Wear-resistant and corrosion-resistant oil cylinder guide sleeve

Abstract

The utility model discloses a wear-resistant and corrosion-resistant oil cylinder guide sleeve which comprises an oil cylinder body, the interior of the oil cylinder body is fixedly connected with a fixing sleeve, the inner wall of the fixing sleeve is fixedly connected with a locking ring, a piston rod is arranged in the oil cylinder body, the bottom end of the piston rod is fixedly connected with a push head, an installation barrel is arranged in the fixing sleeve, and a sealing ring is arranged on the outer side of the installation barrel. An annular groove is formed in the outer side of the installation barrel, a communicating hole is formed in the installation barrel, the interior of the installation barrel is fixedly connected with the box body, and the interior of the box body is fixedly connected with the partition plate. The fixing threads are fixedly connected with the interior of the fixing sleeve through rotation of the mounting cylinder, the mounting difficulty of the mounting cylinder is reduced, lubricating oil enters the oil storage cavity through the communicating hole by means of the oil injection port to be stored, and the lubricating oil on the liquid storage cotton layer is coated on the outer side of the piston rod through rotation of the roller. Friction force and abrasion of the piston rod are reduced through an oil layer formed by lubricating oil.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a wear-resistant and corrosion-resistant hydraulic cylinder guide sleeve. Background Technology

[0002] A hydraulic cylinder is an actuator that converts hydraulic energy into mechanical energy, causing moving parts to perform linear reciprocating motion or oscillation. During use, hydraulic cylinders are usually equipped with guide sleeves to prevent the piston rod from shifting during extension and retraction. The guide sleeves are prone to wear due to repeated contact with the piston rod, leading to a reduction in the lifespan of the device.

[0003] According to Chinese Patent CN 221423694 U, a wear-resistant guide sleeve assembly for a hydraulic cylinder is disclosed, including a hydraulic cylinder body, a piston rod and a guide sleeve. The guide sleeve is provided with an anti-wear layer, and the inside of the anti-wear layer is movably connected to a roller. During use, lubricating oil in the oil reservoir can enter and push the roller to guide the lubricating oil to flow into the contact point between the piston rod and the anti-wear layer.

[0004] The aforementioned patent uses an oil reservoir to store lubricating oil, but the lack of a corresponding oil filling structure means that the entire unit must be disassembled each time oil needs to be added, which is time-consuming and laborious. In addition, the aforementioned patent uses the free flow of oil in conjunction with the rotation of rollers to coat the outside of the piston rod, which makes it easy for the oil to leak from the gaps between the rollers, resulting in unnecessary waste. Utility Model Content

[0005] The purpose of this invention is to provide a wear-resistant and corrosion-resistant hydraulic cylinder guide sleeve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant and corrosion-resistant hydraulic cylinder guide sleeve, comprising a hydraulic cylinder body, a fixed sleeve fixedly connected to the inside of the hydraulic cylinder body, a locking ring fixedly connected to the inner wall of the fixed sleeve, a piston rod disposed inside the hydraulic cylinder body, the bottom end of the piston rod fixedly connected to a push head, an installation cylinder disposed inside the fixed sleeve, a sealing ring disposed on the outer side of the installation cylinder, a fixing thread disposed on the outer side of the sealing ring, an oil injection port disposed on the outer side of the hydraulic cylinder body, an annular groove formed on the outer side of the installation cylinder, a communicating hole disposed inside the installation cylinder, a box body fixedly connected to the inside of the installation cylinder, a partition plate fixedly connected to the inside of the box body, an oil storage cavity disposed inside the box body, an oil storage cotton layer fixedly connected to the side of the partition plate, a rotating shaft rotatably connected to the inner wall of the box body, and a roller fixedly connected to the outer side of the rotating shaft.

[0007] Preferably, the inside of the cylinder body slides with the outside of the pusher, and the top of the cylinder body slides with the outside of the piston rod through a sealing sleeve.

[0008] Preferably, the fixing sleeve has a threaded groove inside, and the fixing sleeve is threadedly connected to the fixing thread through the threaded groove. A circular through hole is opened on the side of the fixing sleeve, and the circular through hole communicates with the inside of the annular groove. One end of the oil injection port passes through the inside of the circular through hole.

[0009] Preferably, the number of the connecting holes is fixedly connected to the outside of the box body, and a circular through hole is opened on the top of the box body, and the oil storage cavity is connected to the connecting holes through the circular through hole.

[0010] Preferably, the partition has several oil holes on its side, the partition is bonded and fixed to the oil storage cotton layer, the oil storage cotton layer has a sponge layer inside, and the oil storage cotton layer has an arc-shaped groove on its side that is adapted to the outside of the roller.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention reduces the difficulty of installing the mounting cylinder by placing the mounting cylinder inside the cylinder body and fixing it to the fixing thread through the rotation of the mounting cylinder. One end of the oil gun is connected through the oil injection port, and the oil enters through the oil injection port and is stored in the oil storage chamber through the connecting hole. When the piston rod moves, the rotation of the roller coats the lubricating oil on the reservoir cotton layer onto the outside of the piston rod. The oil layer formed by the lubricating oil reduces friction and wear on the piston rod. The adsorption of the oil layer by the reservoir cotton layer prevents the lubricating oil from flowing out and causing waste, thus saving the cost of using cylinder lubricating oil. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is an internal sectional view of the overall structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the fixing sleeve structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the mounting cylinder structure of this utility model;

[0017] Figure 5 This is a cross-sectional view of the internal structure of the box body of this utility model.

[0018] In the diagram: 1. Cylinder body; 2. Fixing sleeve; 3. Locking ring; 4. Piston rod; 5. Push head; 6. Mounting cylinder; 7. Sealing ring; 8. Fixing thread; 9. Oil inlet; 10. Annular groove; 11. Connecting hole; 12. Box body; 13. Partition plate; 14. Oil storage chamber; 15. Oil storage cotton layer; 16. Rotating shaft; 17. Roller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-5 This utility model provides a technical solution: a wear-resistant and corrosion-resistant hydraulic cylinder guide sleeve, including a hydraulic cylinder body 1. The inside of the hydraulic cylinder body 1 is slidably fitted with the outside of the push head 5. The inside of the hydraulic cylinder body 1 is welded and fixed to a fixed sleeve 2. The inner wall of the fixed sleeve 2 is welded and fixed to a locking ring 3. The locking ring 3 limits the rotation of the mounting cylinder 6 during installation and ensures that one end of the oil inlet 9 is height-matched with the annular groove 10, ensuring that the oil injected into the oil inlet 9 enters the annular groove 10 and avoids displacement. A piston rod 4 is installed inside the hydraulic cylinder body 1. The bottom end of the piston rod 4 is welded and fixed to the push head 5. The top of the hydraulic cylinder body 1 is slidably fitted with the outside of the piston rod 4 through a sealing sleeve to improve the sealing effect of the piston rod 4. A rubber ring is installed inside the fixed sleeve 2 to ensure the sealing effect at the connection between the piston rod 4 and the mounting cylinder 6 during the reciprocating movement of the piston rod 4.

[0021] The fixing sleeve 2 has an internal mounting cylinder 6, which is connected and fixed to the outer side of the sealing ring 7. The fixing sleeve 2 has a threaded groove, which is threaded to a fixing thread 8. The fixing thread 8 is located at the upper end of the mounting cylinder 6. An annular groove 10 is located between the sealing ring 7 and the fixing thread 8. The fixing thread 8 facilitates the connection and fixation of the mounting cylinder 6, making it easy to install, disassemble, and maintain, thus enhancing its performance in subsequent use. The self-locking effect of the fixing thread 8 prevents the mounting cylinder 6 from shifting. An oil inlet 9 is provided on the outer side of the cylinder block 1. A one-way valve can be installed inside the oil inlet 9. The oil inlet 9 is connected to the connecting hole 11 through an annular groove 10. An annular groove 10 is provided on the outer side of the mounting cylinder 6. The connecting hole 11 is provided inside the mounting cylinder 6. The interior of the mounting cylinder 6 is welded and fixed to the box body 12. The interior of the box body 12 is welded and fixed to the partition plate 13. An oil storage chamber 14 is provided inside the box body 12. The side of the partition plate 13 is welded and fixed to the oil storage cotton layer 15. The inner wall of the box body 12 is rotatably connected to the rotating shaft 16. The outer side of the rotating shaft 16 is welded and fixed to the roller 17.

[0022] A circular through hole is provided on the side of the fixed sleeve 2, which communicates with the interior of the annular groove 10. One end of the oil inlet 9 passes through the interior of the circular through hole. When oil needs to be added, the oil gun is connected to the oil inlet 9, and the oil is injected into the annular groove 10 through the oil inlet 9, and then flows into the oil storage chamber 14 for storage through the connecting hole 11.

[0023] The number of connecting holes 11 is welded and fixed to the outside of the box body 12. A circular through hole is opened on the top of the box body 12. The oil storage cavity 14 is connected to the connecting hole 11 through the circular through hole. Several oil holes are opened on the side of the partition plate 13. The oil flows into the oil storage cotton layer 15 through the oil holes, which facilitates the oiling of the roller 17.

[0024] The partition plate 13 is bonded and fixed to the oil storage cotton layer 15. A sponge layer is installed inside the oil storage cotton layer 15. An arc-shaped groove is formed on the side of the oil storage cotton layer 15 to fit the outer side of the roller 17. This arc-shaped groove reduces friction between the roller 17 and the oil storage cotton layer 15, extending its service life. Simultaneously, the arc-shaped groove on the side of the oil storage cotton layer 15 facilitates the internal fit of the roller 17. A groove is provided in the center of the roller 17, forming a curved roller. The curved surface at the center of the roller 17 allows for better contact with the outer side, thereby increasing the contact area between the piston rod 4 and the roller 17 and enhancing the lubricating oil coating effect.

[0025] Working principle: During use, the piston rod 4 drives the push head 5 to move inside the cylinder body 1, enabling linear movement of the moving parts. When the piston rod 4 moves, it drives the roller 17 to rotate. As the roller 17 rotates, it scrapes and coats the oil stored in the oil storage cotton layer 15 onto the outside of the piston rod 4, forming a protective oil layer on the outside of the piston rod 4. This prevents wear caused by prolonged reciprocating movement of the piston rod 4. The oil storage cotton layer 15 can absorb the oil and prevent oil leakage and waste through tension. The close contact between the oil storage cotton layer 15 and the roller 17 ensures more even oil application.

[0026] When oil needs to be added, the oil gun is connected to the oil inlet 9, and the oil is injected into the annular groove 10 through the oil inlet 9. The oil then flows into the oil storage chamber 14 through the connecting hole 11. The oil inside the oil storage chamber 14 enters the oil storage cotton layer 15 through the oil hole on the partition 13. The oil storage cotton layer 15 absorbs the oil, effectively reducing the difficulty of oiling.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant and corrosion-resistant hydraulic cylinder guide sleeve, comprising a hydraulic cylinder body (1), characterized in that: The cylinder body (1) is fixedly connected to the fixed sleeve (2), the inner wall of the fixed sleeve (2) is fixedly connected to the locking ring (3), the cylinder body (1) is provided with a piston rod (4), the bottom end of the piston rod (4) is fixedly connected to the push head (5), the fixed sleeve (2) is provided with an installation cylinder (6), the installation cylinder (6) is provided with a sealing ring (7) on the outside, the sealing ring (7) is provided with a fixing thread (8) on the outside, the cylinder body (1) is provided with an oil inlet (9), and the installation cylinder... (6) An annular groove (10) is opened on the outside. A connecting hole (11) is provided inside the mounting cylinder (6). The inside of the mounting cylinder (6) is fixedly connected to the box body (12). The inside of the box body (12) is fixedly connected to the partition (13). An oil storage cavity (14) is provided inside the box body (12). The side of the partition (13) is fixedly connected to the oil storage cotton layer (15). The inner wall of the box body (12) is rotatably connected to the rotating shaft (16). The outside of the rotating shaft (16) is fixedly connected to the roller (17).

2. The wear-resistant and corrosion-resistant hydraulic cylinder guide sleeve according to claim 1, characterized in that: The cylinder body (1) is slidably fitted inside the pusher (5) and the top of the cylinder body (1) is slidably fitted outside the piston rod (4) through a sealing sleeve.

3. The wear-resistant and corrosion-resistant hydraulic cylinder guide sleeve according to claim 1, characterized in that: The fixed sleeve (2) is provided with a threaded groove inside. The fixed sleeve (2) is threadedly connected to the fixed thread (8) through the threaded groove. A circular through hole is opened on the side of the fixed sleeve (2). The circular through hole is connected to the inside of the annular groove (10). One end of the oil injection port (9) passes through the inside of the circular through hole.

4. The wear-resistant and corrosion-resistant hydraulic cylinder guide sleeve according to claim 1, characterized in that: The number of the connecting holes (11) is fixedly connected to the outside of the box body (12). A circular through hole is opened on the top of the box body (12). The oil storage cavity (14) is connected to the connecting holes (11) through the circular through hole.

5. The wear-resistant and corrosion-resistant hydraulic cylinder guide sleeve according to claim 1, characterized in that: The partition (13) has several oil holes on its side. The side of the partition (13) is bonded and fixed to the oil storage cotton layer (15). The oil storage cotton layer (15) has a sponge layer inside. The side of the oil storage cotton layer (15) has an arc-shaped groove that matches the outside of the roller (17).

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