Bearing with good sealing performance

Abstract

The utility model discloses a bearing with good sealing performance, which relates to the technical field of bearings, and comprises an outer ring and an inner ring arranged on the inner side of the outer ring, a plurality of uniformly distributed balls are embedded between the outer ring and the inner ring, the front end and the rear end of the inner ring are provided with clamping grooves, and the front side and the rear side of the outer ring are fixedly connected with cover plates. A first sealing block consistent with the clamping groove in size is fixedly connected to the position, corresponding to the clamping groove, of the inner side of the cover plate, the first sealing block is slidably connected to the interior of the clamping groove, a first plugging block is fixedly connected to the position, located on the outer side of the first sealing block, of the inner side of the cover plate, and an arc-shaped groove is formed in the inner side of the first plugging block; the sealing performance of the bearing is good, and due to the design of the arc-shaped groove and the oil injection hole, the friction damage generated by the balls can be reduced, the durability of the first plugging block is improved, and the good sealing performance of the bearing can be guaranteed when the bearing is used for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a bearing with good sealing performance. Background Technique

[0002] A bearing is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotational accuracy.

[0003] Most of the existing bearings are sealed by a sealing ring installed between the inner ring and the outer ring of the bearing or by installing end covers on both sides of the bearing and using the sealing parts on the inner side of the end covers. However, when sealed only by a gasket or a sealing ring, there are problems of poor sealing performance and a decrease in sealing performance during long-term use. When sealed by the sealing parts on the inner side of the end covers, the sealing parts will be worn by the balls during long-term use, resulting in gaps in the sealing parts and thus affecting the sealing performance of the bearing. Therefore, a bearing with good sealing performance is proposed to solve the problems mentioned above. Content of the Utility Model

[0004] To solve the above technical problems, a bearing with good sealing performance is provided. This technical solution solves the problems in the above background technique that most of the existing bearings are sealed by a sealing ring installed between the inner ring and the outer ring of the bearing or by installing end covers on both sides of the bearing and using the sealing parts on the inner side of the end covers. However, when sealed only by a gasket or a sealing ring, there are problems of poor sealing performance and a decrease in sealing performance during long-term use. When sealed by the sealing parts on the inner side of the end covers, the sealing parts will be worn by the balls during long-term use, resulting in gaps in the sealing parts and thus affecting the sealing performance of the bearing.

[0005] To achieve the above purposes, the technical solution adopted by the utility model is as follows:

[0006] A bearing with good sealing performance includes an outer ring and an inner ring arranged inside the outer ring. A number of evenly distributed balls are embedded between the outer ring and the inner ring. Card slots are opened at both the front and rear ends of the inner ring. Cover plates are fixedly connected to both the front and rear sides of the outer ring. At the corresponding positions of the inner sides of the cover plates and the card slots, first sealing blocks with the same size as the card slots are fixedly connected. The first sealing blocks are slidably connected inside the card slots. On the inner side of the cover plates and outside the first sealing blocks, first blocking blocks are fixedly connected. An arc-shaped groove is opened on the inner side of the first blocking blocks. A fixing groove is opened at one end of the first blocking block close to the arc-shaped groove. A second sealing block is fixedly connected inside the fixing groove. The outer side of the second sealing block abuts against the inner side of the outer ring.

[0007] Preferably, the middle parts of the inner side of the outer ring and the outer side of the inner ring are both arc-shaped that fit the outer surface of the balls.

[0008] Preferably, an arc-shaped sliding groove is formed at the upper end of the outer ring, and an oil injection hole is formed through the bottom end of the arc-shaped sliding groove.

[0009] Preferably, an arc-shaped guide rod is fixedly connected inside the arc-shaped sliding groove, a second sealing block is slidably connected to the outer surface of the arc-shaped guide rod, and a damping spring is sleeved on the side of the outer surface of the arc-shaped guide rod away from the second sealing block.

[0010] Preferably, a pull rod is fixedly connected to the outer surface of the second sealing block.

[0011] Preferably, six uniformly distributed first threaded holes are formed at the edges of the front end and the rear end of the outer ring, and second threaded holes are formed through the corresponding positions of the outer side of the cover plate and the outer ring.

[0012] Preferably, a fastening bolt is threadedly connected inside the first threaded hole and the second threaded hole.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows:

[0014] This solution proposes a bearing with good sealing performance. The bearing is sealed by the first sealing block and the first plugging block on the cover plates at the front and rear ends of the outer ring and the inner ring. After the cover plates are installed at both ends of the outer ring and the inner ring through the first threaded holes, the second threaded holes and the fastening bolts, the first plugging block on the inner side thereof will fit against the surface of the rolling balls, and at the same time, it can seal the gap between the outer ring and the inner ring. A sealed cavity is formed among the outer ring, the inner ring and the first plugging block, thereby improving the sealing performance of the bearing. Moreover, an arc-shaped groove is provided on the inner side of the first plugging block, which can better fit against the rolling balls, thereby reducing the wear caused to the first plugging block when the rolling balls move. At the same time, lubricating oil can be injected into the sealed cavity through the oil injection hole, thereby further reducing the frictional damage generated by the rolling balls and improving the durability of the first plugging block, so that the bearing can also ensure good sealing performance during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the outer ring in the present utility model;

[0017] Figure 3 is a schematic structural diagram of the first plugging block in the present utility model;

[0018] Figure 4 is a schematic structural diagram of the cover plate in the present utility model;

[0019] Figure 5 is a schematic structural diagram of the oil injection hole in the present utility model;

[0020] Figure 6 This is a schematic structural diagram of the arc-shaped chute in the present utility model.

[0021] The reference numerals in the figure are:

[0022] 1. Outer ring; 2. Inner ring; 3. Ball; 4. Card slot; 5. Cover plate; 6. First sealing block; 7. First plugging block; 8. Arc-shaped groove; 9. Fixed groove; 10. Second sealing block; 11. Oil injection hole; 12. Arc-shaped chute; 13. Arc-shaped guide rod; 14. Damping spring; 15. Second plugging block; 16. Pull rod; 17. First threaded hole; 18. Second threaded hole; 19. Fastening bolt. Specific embodiments

[0023] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0024] Referring to Figures 1 - 5 As shown, a bearing with good sealing performance includes an outer ring 1 and an inner ring 2 arranged inside the outer ring 1. A number of evenly distributed balls 3 are embedded between the outer ring 1 and the inner ring 2. Card slots 4 are provided at both the front and rear ends of the inner ring 2. Cover plates 5 are fixedly connected to both the front and rear sides of the outer ring 1. At the corresponding positions of the inner side of the cover plate 5 and the card slots 4, first sealing blocks 6 having the same size as the card slots 4 are fixedly connected. The surface of the first sealing block 6 is smooth, and the first sealing block 6 is slidably connected to the inside of the card slot 4. A first plugging block 7 is fixedly connected to the inner side of the cover plate 5 outside the first sealing block 6. An arc-shaped groove 8 is provided inside the first plugging block 7. A fixed groove 9 is provided at one end of the first plugging block 7 close to the arc-shaped groove 8. A second sealing block 10 is fixedly connected to the inside of the fixed groove 9. The outer side of the second sealing block 10 abuts against the inner side of the outer ring 1.

[0025] Furthermore, six evenly distributed first threaded holes 17 are provided at the edges of both the front and rear ends of the outer ring 1. Second threaded holes 18 are penetrated and provided at the corresponding positions of the outer side of the cover plate 5 and the outer ring 1. A fastening bolt 19 is threadedly connected to the inside of the first threaded hole 17 and the second threaded hole 18.

[0026] Furthermore, align the first sealing block 6 with the card slot 4 and insert the first sealing block 6 into the card slot 4. Then, fix the cover plate 5 through the first threaded hole 17, the second threaded hole 18 and the fastening bolt 19. The cover plate 5 can be installed at both the front and rear ends of the outer ring 1 and the inner ring 2. After the cover plate 5 is installed, the first plugging block 7 on its inner side will fit against the surface of the ball 3, and at the same time, it can seal the gap between the outer ring 1 and the inner ring 2, so that a closed cavity is formed between the outer ring 1, the inner ring 2 and the first plugging block 7, thereby playing a good sealing role.

[0027] Furthermore, the middle part of the inner side of the outer ring 1 and the middle part of the outer side of the inner ring 2 are both arc-shaped and conform to the outer surface of the ball 3. The arc-shaped design enables the ball 3 to have a larger and smoother contact area when moving inside the bearing, which helps to reduce friction, lower energy loss, and slow down the wear rate of the ball 3, inner ring 2, and outer ring 1, thereby improving the efficiency and stability of the bearing.

[0028] Furthermore, the design of the inner arc-shaped groove 8 of the first sealing block 7 enables the first sealing block 7 to better conform to the ball 3, thereby reducing the wear caused to the first sealing block 7 when the ball 3 moves.

[0029] Furthermore, the second sealing block 10 can seal the connection between the first sealing block 7 and the outer ring 1, improving the sealing effect.

[0030] Refer to Figure 6 As shown, an arc-shaped chute 12 is opened at the upper end of the outer ring 1, and an oil injection hole 11 is opened through the bottom end of the arc-shaped chute 12. Lubricating oil can be injected into the sealed cavity through the oil injection hole 11, thereby further reducing the frictional damage generated by the ball 3, enhancing the durability of the first sealing block 7, and ensuring good sealing performance of the bearing during long-term use.

[0031] Furthermore, an arc-shaped guide rod 13 is fixedly connected inside the arc-shaped chute 12. A second sealing block 15 is slidably connected to the outer surface of the arc-shaped guide rod 13. A damping spring 14 is sleeved on the outer surface of the arc-shaped guide rod 13 on the side away from the second sealing block 15. A pull rod 16 is fixedly connected to the outer surface of the second sealing block 15. In the normal state, the second sealing block 15 is located above the oil injection hole 11 and is used to block the oil injection hole 11. When it is necessary to inject lubricating oil into the oil injection hole 11, pulling the pull rod 16 away from the oil injection hole 11 can drive the second sealing block 15 to compress the damping spring 14 and move away from the upper end of the oil injection hole 11. After injecting the lubricating oil, releasing the pull rod 16, the second sealing block 15 will reset under the action of the damping spring 14 to block the oil injection hole 11.

[0032] Working principle: During installation, align the first sealing block 6 with the card slot 4 and insert the first sealing block 6 into the card slot 4. Then, fix the cover plate 5 through the first threaded hole 17, the second threaded hole 18 and the fastening bolt 19, so that the cover plate 5 can be installed at the front and rear ends of the outer ring 1 and the inner ring 2. After the cover plate 5 is installed, the first plugging block 7 on its inner side will fit the surface of the ball 3, and at the same time, it can seal the gap between the outer ring 1 and the inner ring 2, so that a sealed cavity is formed between the outer ring 1, the inner ring 2 and the first plugging block 7, thus playing a sealing role. During the daily use of the bearing, lubricating oil can be injected into the sealed cavity through the oil injection hole 11, so as to further reduce the friction damage generated by the ball 3 and improve the durability of the first plugging block 7, so that the bearing can also ensure good sealing performance during long-term use.

[0033] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing with good sealing performance, characterized in that, it includes an outer ring (1) and an inner ring (2) arranged inside the outer ring (1). A number of evenly distributed balls (3) are embedded between the outer ring (1) and the inner ring (2). Grooves (4) are provided at both the front and rear ends of the inner ring (2). Cover plates (5) are fixedly connected to both the front and rear sides of the outer ring (1). At the corresponding positions of the inner sides of the cover plates (5) and the grooves (4), first sealing blocks (6) with the same size as the grooves (4) are fixedly connected. The first sealing blocks (6) are slidably connected inside the grooves (4). On the inner side of the cover plates (5) and outside the first sealing blocks (6), first blocking blocks (7) are fixedly connected. An arc-shaped groove (8) is provided inside the first blocking blocks (7). A fixing groove (9) is provided at one end of the first blocking block (7) close to the arc-shaped groove (8). A second sealing block (10) is fixedly connected inside the fixing groove (9). The outer side of the second sealing block (10) abuts against the inner side of the outer ring (1).

2. The bearing with good sealing performance according to claim 1, characterized in that: The middle part of the inner side of the outer ring (1) and the middle part of the outer side of the inner ring (2) are both arc-shaped and fit the outer surface of the balls (3).

3. The bearing with good sealing performance according to claim 1, characterized in that: An arc-shaped sliding groove (12) is provided at the upper end of the outer ring (1), and an oil injection hole (11) runs through the bottom end of the arc-shaped sliding groove (12).

4. The bearing with good sealing performance according to claim 3, characterized in that: An arc-shaped guide rod (13) is fixedly connected inside the arc-shaped sliding groove (12). A second blocking block (15) is slidably connected to the outer surface of the arc-shaped guide rod (13). A damping spring (14) is sleeved on the outer surface of the arc-shaped guide rod (13) on the side away from the second blocking block (15).

5. The bearing with good sealing performance according to claim 4, characterized in that: A pull rod (16) is fixedly connected to the outer surface of the second blocking block (15).

6. The bearing with good sealing performance according to claim 1, characterized in that: Six evenly distributed first threaded holes (17) are provided at the edges of both the front and rear ends of the outer ring (1). Second threaded holes (18) run through the corresponding positions of the outer side of the cover plate (5) and the outer ring (1).

7. The bearing with good sealing performance according to claim 6, characterized in that: A fastening bolt (19) is threadedly connected inside the first threaded holes (17) and the second threaded holes (18).

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