Super-wear-resistant high-strength floating oil seal for coal mining machine

Abstract

The utility model discloses a super wear-resistant high-strength floating oil seal for a coal mining machine, which relates to the technical field of floating oil seals and comprises a metal ring and a rubber ring arranged in the metal ring, a support rod is fixedly arranged on the inner wall of the metal ring, a push plate is rotatably sleeved on the rod wall of the support rod, and the bottom of the push plate is in contact fit with the outer wall of the rubber ring. A rotating hole is formed in the push plate, a rotating assembly is arranged in the rotating hole and used for supporting the push plate to rotate, a supporting frame is fixedly arranged on the rod wall of the supporting rod, and a rebound mechanism is arranged between the supporting frame and the inner wall of the rotating hole and used for supporting the push plate to rebound. By pushing the push plate, the lower end of the outer wall of the rubber ring is shoveled by the lower end of the push plate, so that the rubber ring is moved out from the inside of the sealing ring, the rubber ring can be conveniently taken and quickly replaced, and the use convenience of the oil seal is ensured.

Description

Technical Field

[0001] This utility model relates to the field of floating oil seal technology, specifically to an ultra-wear-resistant, high-strength floating oil seal for coal mining machines. Background Technology

[0002] A floating oil seal is a mechanical seal device used to seal rotating shafts. It typically consists of two identical metal rings and a rubber ring sandwiched in between, serving both sealing and buffering functions. To ensure stable operation of the oil seal within a coal mining machine, the manufacturing materials are improved, using high-hardness, high-strength, and wear-resistant metal materials for processing. Furthermore, patent document CN212360778U discloses an ultra-wear-resistant, high-strength floating oil seal for coal mining machines. This floating oil seal features an O-ring-shaped sealing ring inside. In contrast, existing oil seals use a rubber ring fitted inside the metal rings. Due to the harsh operating environment of coal mining machines, the rubber components in the floating oil seal age under the influence of temperature, pressure, and chemical media during long-term use, causing the rubber to harden, become brittle, or soften, losing elasticity. This affects the sealing effect and the overall service life of the oil seal. Additionally, the relatively small space occupied by the rubber ring makes quick removal and replacement difficult, necessitating the replacement of the entire oil seal and reducing its effectiveness. Utility Model Content

[0003] In view of the problems existing in the current ultra-wear-resistant and high-strength floating oil seals used in coal mining machines, this utility model is proposed.

[0004] Therefore, the purpose of this utility model is to provide an ultra-wear-resistant, high-strength floating oil seal for coal mining machines, which solves the problem that the internal rubber ring of the floating oil seal is tightly positioned and cannot be quickly removed and replaced after aging.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-strength, wear-resistant floating oil seal for a coal mining machine includes a metal ring and a rubber ring disposed inside the metal ring. A support rod is fixedly provided on the inner wall of the metal ring, and a push plate is rotatably sleeved on the rod wall of the support rod. The bottom of the push plate contacts and engages with the outer wall of the rubber ring.

[0007] The push plate has a rotating hole inside, and a rotating component is provided in the rotating hole. The rotating component is used to support the rotation of the push plate.

[0008] The support rod has a support frame fixedly mounted on its wall, and a spring-back mechanism is provided between the support frame and the inner wall of the rotating hole. The spring-back mechanism is used to support the push plate to spring back.

[0009] Preferably, the rotating assembly includes a fixed rod, with both ends of the fixed rod rotatably passing through the two sides of the rotating hole, and the middle end of the fixed rod rotatably passing through the interior of the support rod.

[0010] Preferably, both ends of the fixing rod are provided with connecting threads, and both ends of the fixing rod are fitted with limiting nuts, which are rotatably engaged with the connecting threads.

[0011] Preferably, the support rod has a through hole in its wall, and the fixing rod is slidably disposed inside the through hole.

[0012] Furthermore, the rebound mechanism includes a rotating plate, a first mounting rod, and a second mounting rod. The first mounting rod and the second mounting rod are respectively fixedly disposed in the support frame and the rotating hole. The lower end of the rotating plate is rotatably sleeved on the outside of the first mounting rod. A strip-shaped hole is opened inside the rotating plate. The second mounting rod is slidably disposed in the strip-shaped hole. A return spring is fixedly disposed between the rod wall of the second mounting rod and the inner wall of the strip-shaped hole.

[0013] Preferably, the longitudinal section of the support frame is U-shaped.

[0014] Preferably, the bottom end of the push plate is pointed.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] This invention, through the provision of a sealing ring, rubber ring, support rod, rotating assembly, and push plate, allows the top of the oil seal to be opened. By pushing the push plate, the lower end of the push plate scrapes the lower end of the outer wall of the rubber ring, causing the rubber ring to be moved out from inside the sealing ring. This facilitates the removal and quick replacement of the rubber ring, ensuring the ease of use of the oil seal.

[0017] This utility model, through the provision of a support rod, push plate, support frame and rebound mechanism, can quickly rebound to its original position after the push plate rotates, so that the internal space of the sealing ring is not obstructed and the rubber ring can still be stably installed.

[0018] This invention, through the design of a push plate and a rubber ring in contact, can effectively disperse the effect of external pressure on the rubber ring. When the oil seal is subjected to axial or radial pressure, the push plate can rotate on the support rod and be buffered by the spring mechanism, avoiding pressure concentration on a local area of ​​the rubber ring, reducing deformation, hardening or damage to the rubber ring caused by long-term uneven pressure, thereby extending the service life of the rubber ring and maintaining its good sealing and buffering performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the support rod, push plate, and rotating assembly of this utility model;

[0022] Figure 3 For the present utility model Figure 2 A three-dimensional structural diagram from another perspective.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Metal ring; 2. Rubber ring; 3. Support rod; 4. Push plate; 5. Support frame; 6. Fixing rod; 7. Connecting thread; 8. Limit nut; 9. Through hole; 10. Rotating plate; 11. First mounting rod; 12. Second mounting rod; 13. Strip hole; 14. Return spring. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model discloses an ultra-wear-resistant, high-strength floating oil seal for coal mining machines.

[0027] This utility model provides, for example Figure 1-3 The super wear-resistant and high-strength floating oil seal for a coal mining machine includes a metal ring 1 and a rubber ring 2 disposed inside the metal ring 1. A support rod 3 is fixedly provided on the inner wall of the metal ring 1. A push plate 4 is rotatably sleeved on the rod wall of the support rod 3. The bottom end of the push plate 4 is pointed and the bottom of the push plate 4 contacts and cooperates with the outer wall of the rubber ring 2.

[0028] The push plate 4 has a rotating hole inside, and a rotating assembly is provided inside the rotating hole. The rotating assembly is used to support the rotation of the push plate 4. The rotating assembly includes a fixed rod 6. The rod wall of the support rod 3 has a through hole 9. The fixed rod 6 is slidably disposed inside the through hole 9. The two ends of the fixed rod 6 are respectively rotatably disposed on both sides of the rotating hole, and the middle end of the fixed rod 6 is rotatably disposed inside the support rod 3.

[0029] Both ends of the fixed rod 6 are provided with connecting threads 7, and both ends of the fixed rod 6 are fitted with limiting nuts 8, which are rotatably engaged with the connecting threads 7.

[0030] When using a floating oil seal, the outer metal ring 1 and inner rubber ring 2 work together to stably fit on the outside of the shaft, ensuring the stability and sealing of the internal components of the coal mining machine during operation. As the coal mining machine operates for longer periods, the inner rubber ring 2 of the metal ring 1 may age due to external impurities and pressure. In this case, the oil seal can be opened, and an external device can be used to push the push plate 4. The push plate 4 rotates under the rotation of the fixed rod 6 and the through hole 9. At this time, the pointed area at the bottom of the push plate 4 inserts into the bottom of the rubber ring 2. As the push plate 4 rotates, its lower end lifts upward and inward, causing the rubber ring 2 to slowly detach from the inside of the metal ring 1, creating a gap. The operator can then use an external shaft-like component to reach between the metal ring 1 and the rubber ring 2 and lift the rubber ring 2 out of the metal ring 1. This completes the separation of the rubber ring 2. Simultaneously, the push plate 4 springs back to its original position, ensuring that there are no installation obstacles after the rubber ring 2 is replaced. This effectively improves the performance of the floating oil seal.

[0031] In order for the push plate 4 to rotate back to its original position after the rubber ring 2 is disengaged, such as Figure 2-3 As shown, a support frame 5 is fixedly mounted on the wall of the support rod 3. The longitudinal section of the support frame 5 is U-shaped. A spring-back mechanism is provided between the support frame 5 and the inner wall of the rotating hole. The spring-back mechanism is used to support the push plate 4 to spring back. The spring-back mechanism includes a rotating plate 10, a first mounting rod 11 and a second mounting rod 12. The first mounting rod 11 and the second mounting rod 12 are respectively fixed in the support frame 5 and the rotating hole. The lower end of the rotating plate 10 is rotatably sleeved on the outside of the first mounting rod 11. A strip hole 13 is opened inside the rotating plate 10. The second mounting rod 12 is slidably mounted in the strip hole 13. A return spring 14 is fixed between the wall of the second mounting rod 12 and the inner wall of the strip hole 13.

[0032] During the rotation of the push plate 4, the second mounting rod 12 in the rotating hole inside the push plate 4 pushes the rotating plate 10 through the sliding engagement with the strip hole 13. At this time, the rotating plate 10 can swing inside the support frame 5 with the support of the first mounting rod 11. At the same time, as the upper part of the push plate 4 moves downward when it rotates, the second mounting rod 12 can squeeze the return spring 14. When the push plate 4 is not pushed by external force, the second mounting rod 12 first returns to its original position with the elastic force of the return spring 14. Then, the push plate 4 rotates back to its original position through the rotational support of the first mounting rod 11 and the support frame 5.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-strength, wear-resistant floating oil seal for a coal mining machine, comprising a metal ring (1) and a rubber ring (2) disposed inside the metal ring (1), characterized in that, The inner wall of the metal ring (1) is fixedly provided with a support rod (3), and the rod wall of the support rod (3) is rotatably sleeved with a push plate (4). The bottom of the push plate (4) is in contact with the outer wall of the rubber ring (2). The push plate (4) has a rotating hole inside, and a rotating component is provided in the rotating hole. The rotating component is used to support the rotation of the push plate (4). The support rod (3) has a support frame (5) fixedly mounted on its wall. A spring-back mechanism is provided between the support frame (5) and the inner wall of the rotating hole. The spring-back mechanism is used to support the push plate (4) to spring back.

2. The ultra-wear-resistant, high-strength floating oil seal for coal mining machines according to claim 1, characterized in that, The rotating assembly includes a fixed rod (6), with both ends of the fixed rod (6) rotatably passing through the two sides of the rotating hole, and the middle end of the fixed rod (6) rotatably passing through the inside of the support rod (3).

3. The ultra-wear-resistant, high-strength floating oil seal for coal mining machines according to claim 2, characterized in that, Both ends of the fixed rod (6) are provided with connecting threads (7), and both ends of the fixed rod (6) are provided with limiting nuts (8), which are rotatably engaged with the connecting threads (7).

4. The ultra-wear-resistant, high-strength floating oil seal for coal mining machines according to claim 2, characterized in that, The support rod (3) has a through hole (9) in its wall, and the fixing rod (6) is slidably disposed inside the through hole (9).

5. The ultra-wear-resistant, high-strength floating oil seal for coal mining machines according to claim 1, characterized in that, The rebound mechanism includes a rotating plate (10), a first mounting rod (11), and a second mounting rod (12). The first mounting rod (11) and the second mounting rod (12) are respectively fixed in the support frame (5) and the rotating hole. The lower end of the rotating plate (10) is rotatably sleeved on the outside of the first mounting rod (11). A strip hole (13) is opened inside the rotating plate (10). The second mounting rod (12) is slidably disposed in the strip hole (13). A return spring (14) is fixed between the rod wall of the second mounting rod (12) and the inner wall of the strip hole (13).

6. The ultra-wear-resistant, high-strength floating oil seal for coal mining machines according to claim 1, characterized in that, The longitudinal section of the support frame (5) is U-shaped.

7. The ultra-wear-resistant, high-strength floating oil seal for coal mining machines according to claim 1, characterized in that, The bottom end of the push plate (4) is pointed.

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