Bearing leakage blocking device

Abstract

The utility model relates to the technical field of bearings, in particular to a bearing leakage blocking device which comprises a rotating shaft, a cover plate, a sealing ring, a clamping block and a clamping groove, when an oil filling hole is opened and closed, the bearing leakage blocking device does not rub with the sealing ring, and the cover plate extrudes the sealing ring to seal the oil filling hole through the certain rebound resilience of the sealing ring and the rebound resilience of the sealing ring. Therefore, the service life of the sealing ring is prolonged, and the sealing effect of the sealing ring is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a bearing leak preventer. Background Technology

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure their rotational accuracy. According to the different frictional properties of the moving elements, bearings can be divided into two main categories: rolling bearings and sliding bearings. Rolling bearings have been standardized and serialized, but compared with sliding bearings, they have larger radial dimensions, vibration and noise, and are also more expensive.

[0003] Chinese Patent CN214404345U discloses a leak-proof precision bearing. Specifically, the bearing features an oil injection mechanism including a mounting block inside the outer ring of the bearing. The mounting block has an oil injection hole that communicates with the interior of the outer ring. A mounting hole is located at the end of the oil injection hole furthest from the inner ring, containing a plug. A threaded hole is located at the end of the plug near the outer edge of the outer ring. Two sets of elastic plates are symmetrically arranged at the bottom of the plug, with one end extending into the oil injection hole. Several sets of slots are provided on the inner sidewall of the mounting block and along the sides of the two sets of elastic plates. A corresponding locking block is located at the end of the elastic plate furthest from the plug and near the slot. The slots are triangular in structure. A sealing ring groove is provided on the sidewall of the plug, containing a sealing ring, thereby preventing lubricating grease from leaking from the plug and preventing external impurities from entering the bearing. Because the sealing ring in the aforementioned patent is located on the side wall of the plug, when oil injection is required, the plug must be pulled out of the mounting hole to expose the oil injection hole. This causes the sealing ring to rub against the inner wall of the mounting hole. When the plug returns to the mounting hole, the sealing ring rubs against the inner wall of the mounting hole again. Over time, the friction between the sealing ring and the mounting hole damages the sealing ring, resulting in poor sealing performance, reduced service life of the sealing ring, and leakage and intrusion of external impurities. Therefore, there is an urgent need for a bearing leak preventer that can not only provide normal oil injection but also improve the service life of the sealing ring and enhance the sealing effect. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a bearing leak preventer that can not only inject oil normally, but also improve the service life of the sealing ring and increase the sealing effect.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a bearing leak preventer, including an inner bearing ring, an outer bearing ring that mates with the inner bearing ring, and a plurality of balls between the outer bearing ring and the inner bearing ring. Each ball is fitted with a retainer on its outer side. A sealing mechanism is provided between the inner bearing ring and the outer bearing ring and on both sides of the balls. An oil injection mechanism is provided on the side wall of the outer bearing ring. The oil injection mechanism includes a groove on the outer bearing ring, an oil injection hole in the groove, a sealing groove near the end of the oil injection hole, a sealing ring in the sealing groove, a rotating shaft and a fixed seat at the bottom of the groove, the rotating shaft and the fixed seat being symmetrically arranged about the axial direction of the oil injection hole. The rotating shaft is parallel to the axial direction of the outer bearing ring. The rotating shaft is located on one side of the oil injection hole, and the fixed seat is located on the other side of the oil injection hole. The fixed seat has a slot on the side away from the oil injection hole. A cover plate is pivotally connected to the rotating shaft. A locking block matching the slot is provided on the cover plate. Rotation of the rotating shaft switches the cover plate between a first state and a second state.

[0006] In the first state, the lower part of the cover plate squeezes the sealing ring, and the cover plate's locking block matches the locking groove to seal the oil injection hole;

[0007] In the second state, the lower part of the cover plate moves away from the sealing ring, the cover plate's locking block disengages from the locking groove, and the oil injection hole is opened.

[0008] Furthermore, the bearing leak preventer includes a sealing component, which includes a clamping block, an external threaded post, and a limiting block. The lower part of the limiting block is connected to the external threaded post, and the lower part of the external threaded post is loosely connected to the clamping block. The groove includes a first limiting groove and a second limiting groove. The first limiting groove is close to the outer wall of the bearing outer ring, and the second limiting groove is connected to the first limiting groove. The radius of the second limiting groove is smaller than that of the first limiting groove, and the second limiting groove is provided with an internal thread that matches the external threaded post.

[0009] Furthermore, in the second state, the height of the cover plate to the second limiting groove near the first end of the first limiting groove matches the height of the abutment block to the external threaded post, and the height of the limiting block is less than the height of the first limiting groove.

[0010] Furthermore, a handle is provided on the cover plate, which is located near the locking block.

[0011] Furthermore, a cross groove is provided on the top of the limiting block.

[0012] The beneficial effects of this utility model are as follows: Compared with the prior art, by setting a rotating shaft, cover plate, sealing ring, locking block and locking groove, it is possible to avoid friction with the sealing ring when opening and closing the oil filling hole. The sealing ring itself has a certain degree of resilience, and by utilizing the resilience of the sealing ring, the cover plate squeezes the sealing ring to seal the oil filling hole, thereby improving the service life of the sealing ring and enhancing the sealing effect of the sealing ring. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural view of a bearing leak preventer according to a specific embodiment of the present utility model;

[0014] Figure 2 for Figure 1 Enlarged view of part A;

[0015] Figure 3 This is a schematic diagram of the internal structure of a bearing leak stopper according to a specific embodiment of the present utility model;

[0016] Figure 4 for Figure 3 Enlarged view of part B.

[0017] Label Explanation

[0018] 1. Bearing outer ring; 11. Groove; 111. Shaft; 1111. Cover plate; 11111. Locking block; 112. Fixing seat; 1121. Locking groove; 113. First limiting groove; 114. Second limiting groove; 1141. Internal thread;

[0019] 2. Bearing inner ring;

[0020] 3. Ball bearings; 31. Cage;

[0021] 4. Sealing mechanism;

[0022] 5. Oil injection mechanism; 51. Oil injection hole; 511. Sealing groove; 5111. Sealing ring;

[0023] 6. Sealing component; 61. Abutment block; 62. External threaded post; 63. Limiting block; 631. Cross groove;

[0024] 7. Handle. Detailed Implementation

[0025] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0026] Please refer to Figures 1 to 4A bearing leak preventer includes an inner bearing ring 2, an outer bearing ring 1 that mates with the inner bearing ring 2, and a plurality of balls 3 disposed between the outer bearing ring 1 and the inner bearing ring 2. Each ball 3 is fitted with a cage 31. Sealing mechanisms 4 are provided between the inner bearing ring 2 and the outer bearing ring 1, on both sides of the balls 3. An oil injection mechanism 5 is provided on the side wall of the outer bearing ring 1. The oil injection mechanism 5 includes a groove 11 on the outer bearing ring 1, an oil injection hole 51 within the groove 11, a sealing groove 511 near the end of the oil injection hole 51 close to the groove 11, and a sealing ring 51 within the sealing groove 511. 11. The bottom of the groove 11 is provided with a rotating shaft 111 and a fixed seat 112. The rotating shaft 111 and the fixed seat 112 are symmetrically arranged with respect to the axial direction of the oil injection hole 51. The rotating shaft 111 is parallel to the axial direction of the outer ring 1 of the bearing. The rotating shaft 111 is located on one side of the oil injection hole 51, and the fixed seat 112 is located on the other side of the oil injection hole 51. The fixed seat 112 is provided with a slot 1121 on the side away from the oil injection hole 51. A cover plate 1111 is pivotally connected to the rotating shaft 111. The cover plate 1111 is provided with a locking block 11111 that matches the slot 1121. The rotating shaft 111 rotates to switch the cover plate 1111 between the first state and the second state.

[0027] In the first state, the lower part of the cover plate 1111 squeezes the sealing ring 5111, and the locking block 11111 of the cover plate 1111 matches the locking groove 1121 to seal the oil injection hole 51.

[0028] In the second state, the lower part of the cover plate 1111 moves away from the sealing ring 5111, the locking block 11111 of the cover plate 1111 disengages from the locking groove 1121, and the oil injection hole 51 is opened.

[0029] In the above embodiments, it should be noted that the sealing mechanism 4 can refer to the sealing mechanism 4 of the prior art patent CN214404345U. A sealing ring 5111 is provided on the end face of the oil injection hole 51. The rotating shaft 111 rotates, causing the cover plate 1111 to press against the sealing ring 5111. The locking block 11111 of the cover plate 1111 matches the locking groove 1121, thereby sealing the oil injection hole 51 and preventing leakage and the intrusion of external impurities. When oil injection is required, the rotating shaft 111 rotates, causing the locking block 11111 to separate from the locking groove 1121, and the cover plate 1111 moves away from the groove. The sealing ring 5111 and the cover plate 1111 are opened for oil injection. Compared with the prior art, by setting the rotating shaft 111, cover plate 1111, sealing ring 5111, locking block 11111 and locking groove 1121, the oil injection hole 51 is opened and closed without friction with the sealing ring 5111. The sealing ring 5111 itself has a certain elasticity. The elasticity of the sealing ring 5111 is used to make the cover plate 1111 squeeze the sealing ring 5111 to seal the oil injection hole 51, thereby improving the service life of the sealing ring 5111 and enhancing the sealing effect of the sealing ring 5111.

[0030] As an optional implementation, the bearing leak preventer includes a sealing component 6, which includes a pressing block, an external threaded post 62, and a limiting block 63. The lower part of the limiting block 63 is connected to the external threaded post 62, and the lower part of the external threaded post 62 is loosely connected to the pressing block. The groove 11 includes a first limiting groove 113 and a second limiting groove 114. The first limiting groove 113 is close to the outer wall of the bearing outer ring 1, and the second limiting groove 114 is connected to the first limiting groove 113. The radius of the second limiting groove 114 is smaller than that of the first limiting groove 113, and the second limiting groove 114 is provided with an internal thread 1141 that matches the external threaded post 62.

[0031] In the above embodiments, in the second state, by matching the external threaded post 62 of the sealing member 6 with the internal thread 1141, the external threaded post is tightened toward the cover plate 1111, so that the abutment block can abut against the upper middle position of the cover plate 1111. This can prevent the cover plate 1111 from being blown open due to excessive pressure in the oil injection hole 51, and further prevent leakage from the oil injection hole 51 and the intrusion of external impurities.

[0032] As an optional implementation, in the second state, the height of the cover plate 1111 to the second limiting groove 114 near the first end of the first limiting groove 113 matches the height of the abutment block 61 to the external threaded post 62, and the height of the limiting block 63 is less than the height of the first limiting groove 113.

[0033] In the above embodiments, not only can the external thread be fully screwed into the second limiting groove 114 and the abutting block be pressed against the middle of the upper part of the cover plate 1111, but the limiting block 63 can also be located in the second limiting groove 114 to ensure that the outer wall of the bearing outer ring 1 will not bulge.

[0034] As an optional implementation, the cover plate 1111 is provided with a handle 7, which is located on the cover plate 1111 near the locking block 11111.

[0035] In the above embodiments, by providing a handle 7, the cover plate 1111 can be pulled up and closed by tools or manually, which facilitates opening and closing the oil filling hole 51.

[0036] As an optional implementation, the top of the limiting block 63 is provided with a cross groove 631.

[0037] In the above embodiments, the external threaded post 62 is screwed out of the second limiting groove 114 by inserting a Phillips screwdriver into the first limiting groove 113 and matching it with the Phillips groove 631.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A bearing leak preventer, comprising an inner bearing ring, an outer bearing ring fitted around the outer side of the inner bearing ring to mate with it, and a plurality of balls disposed between the outer bearing ring and the inner bearing ring, each ball being fitted with a cage on its outer side, a sealing mechanism disposed between the inner bearing ring and the outer bearing ring and on both sides of the balls, and an oil injection mechanism disposed on the side wall of the outer bearing ring, characterized in that, The oil injection mechanism includes a groove on the outer ring of the bearing, an oil injection hole in the groove, a sealing groove at one end of the oil injection hole near the groove, a sealing ring in the sealing groove, a rotating shaft and a fixed seat at the bottom of the groove, the rotating shaft and the fixed seat are symmetrically arranged about the axial direction of the oil injection hole, the rotating shaft is parallel to the axial direction of the outer ring of the bearing, the rotating shaft is located on one side of the oil injection hole, the fixed seat is located on the other side of the oil injection hole, the fixed seat has a slot on the side away from the oil injection hole, a cover plate is pivotally connected to the rotating shaft, the cover plate has a locking block that matches the slot, the rotation of the rotating shaft causes the cover plate to switch between a first state and a second state; In the first state, the lower part of the cover plate squeezes the sealing ring, and the cover plate's locking block matches the locking groove to seal the oil injection hole; In the second state, the lower part of the cover plate moves away from the sealing ring, the cover plate's locking block disengages from the locking groove, and the oil injection hole is opened.

2. The bearing leak preventer according to claim 1, characterized in that, The bearing leak preventer includes a sealing component, which includes a clamping block, an external threaded post, and a limiting block. The lower part of the limiting block is connected to the external threaded post, and the lower part of the external threaded post is loosely connected to the clamping block. The groove includes a first limiting groove and a second limiting groove. The first limiting groove is close to the outer wall of the bearing outer ring, and the second limiting groove is connected to the first limiting groove. The radius of the second limiting groove is smaller than that of the first limiting groove, and the second limiting groove is provided with an internal thread that matches the external threaded post.

3. The bearing leak preventer according to claim 2, characterized in that, In the second state, the height of the cover plate to the second limiting groove near the first end of the first limiting groove matches the height of the abutment block to the external threaded post, and the height of the limiting block is less than the height of the first limiting groove.

4. The bearing leak preventer according to claim 1, characterized in that, The cover plate is equipped with a handle, which is located near the locking block.

5. The bearing leak preventer according to claim 1, characterized in that, The top of the limiting block is provided with a cross groove.

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