Low-friction rolling bearing

Abstract

The utility model provides a low friction rolling bearing relates to rolling bearing technical field, including bearing, the both sides inboard of bearing outer ring part two even insert the snap ring, the both sides outboard of bearing inner ring part two also insert the snap ring, is provided with the sealing ring between two snap rings of bearing same surface, is provided with the drum between the adjacent two rollers in bearing, makes its telescopic end's end cover stretch out the corresponding face sealing ring through pulling the spring rod of one end in the inner tube, utilizes the elastic contraction of spring rod and pulls the end cover and the standing up's clamping block to press down the sealing ring outer facade, therefore utilizes two spring rods in multiple inner tubes, can realize two sealing rings tightly adhere in bearing two sides, even under the vibration state, utilizes the elastic contraction of spring rod and can prevent the sealing ring from falling off.

Description

Technical Field

[0001] This utility model relates to the field of rolling bearing technology, and in particular to a low-friction rolling bearing. Background Technology

[0002] Rolling bearings are widely used mechanical components used to support rotating shafts and reduce friction during their movement. For example, a prior art low-friction rolling bearing, publication number CN221482428U, includes an inner ring and an outer ring. A cage is provided between the inner and outer rings, with multiple rollers arranged on the inner side of the cage. A sealing unit is also provided between the inner and outer rings, comprising a groove on the outer side of the inner ring, a slider slidably connected to the inner side of the groove, a retaining ring fixedly connected to the outer side of the slider, and a sealing ring on the outer side of the retaining ring. A fixing block is fixedly connected to the inner side of the outer ring, and bolts are provided between the fixing block and the sealing ring. When the sealing ring is damaged, multiple bolts are loosened, allowing the sealing ring to be quickly disassembled for easy replacement, making the operation simple.

[0003] However, ball bearings generate high-frequency vibrations during operation, which may reduce the friction between the bolt and nut, causing the bolt to gradually loosen. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a low-friction rolling bearing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a low-friction rolling bearing, comprising a bearing, wherein retaining rings are inserted into the inner sides of both sides of the outer ring portion of the bearing, and retaining rings are also inserted into the outer sides of both sides of the inner ring portion of the bearing. A sealing ring is provided between two retaining rings located on the same side of the bearing. A roller is provided between two adjacent rollers inside the bearing. An inner tube is rotatably connected to the inner wall of the roller. Two coaxially arranged spring rods are symmetrically fixedly installed on the inner wall of the inner tube. The telescopic ends of the two spring rods are respectively facing the two openings of the inner tube, and end caps penetrating the sealing ring are fixedly installed on the telescopic ends of the spring rods. A locking block is hinged to the surface of the end cap and overlaps the outer surface of the sealing ring.

[0006] As a further optimization of the above solution: the sealing ring is embedded in the surface of the retaining ring and the sealing ring is rotatably connected to the inner wall of one of the retaining rings.

[0007] As a further optimization of the above solution: the roller is connected to the bearing roller in a rolling connection and the central axis of the roller is set parallel to the central axis of the bearing.

[0008] As a further optimization of the above solution: the end cap is a T-shaped rotating body and the surface of the end cap is provided with a storage groove for inserting into the card block.

[0009] As a further optimization of the above solution: both ends of the inner tube are fitted with protrusions, and the protrusions at both ends of the inner tube are respectively fixed to the inner sides of the two sealing rings.

[0010] As a further optimization of the above solution: the side of the protrusion is set with an arc surface and the side of the protrusion is slidably connected to the inner side of the outer ring of the bearing and the inner roller surface of the bearing.

[0011] As a further optimization of the above solution: the protrusion is rotatably connected to a roller on the arc surface near the bearing roller.

[0012] As a further optimization of the above solution: the retaining ring has a wedge block embedded in its side and connected by a spring; several wedge blocks on the retaining ring near the inner ring of the bearing are set on the edge of the inner ring and inserted into the inner ring of the bearing; several wedge blocks on the retaining ring near the outer ring of the bearing are set on the edge of the outer ring and inserted into the outer ring of the bearing; and several insert rods that are inserted into the bearing face are fixedly installed on the surface of the retaining ring.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by pulling the spring rod at one end of the inner tube, the end cap of its telescopic end extends out of the corresponding sealing ring. The elastic contraction of the spring rod pulls the end cap and the vertical locking block to press the outer surface of the sealing ring. Therefore, by using two spring rods in multiple inner tubes, two sealing rings can be tightly attached to both sides of the bearing. Even under vibration, the elastic contraction of the spring rod can prevent the sealing ring from falling off.

[0014] 2. In this utility model, the roller can support the distance between the roller surfaces of two adjacent bearing rollers. By using the roller to contact the end face of the bearing roller, the end face of the bearing roller and the surface of the protrusion can be properly fitted with a clearance, so that the bearing roller will not generate friction when rotating. Moreover, the gap formed can also ensure that the lubricating oil can enter smoothly and cover the entire surface of the bearing roller.

[0015] 2. In this utility model, when inserting the retaining ring, the inclined part of the wedge is used to connect with the bearing surface, which makes it easy for the wedge to overcome the spring's thrust and be stored in the retaining ring. After the retaining ring is installed in place, the spring's thrust is used to make the wedge rise and be inserted into the bearing. The side of the wedge facing away from the inside of the bearing is a vertical plane, so after the wedge is inserted into the bearing, the retaining ring can be prevented from detaching from the bearing. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a low-friction rolling bearing is provided for this utility model; Figure 2 This invention proposes a low-friction rolling bearing. Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 This utility model provides a schematic diagram of the internal structure of a low-friction rolling bearing; Figure 4 This invention proposes a low-friction rolling bearing. Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 This invention proposes a low-friction rolling bearing. Figure 4 A cross-sectional structural diagram.

[0017] Legend: 1. Bearing; 2. Sealing ring; 3. Clamping block; 4. End cap; 5. Clamping ring; 6. Roller; 7. Protrusion; 8. Inner tube; 9. Drum; 10. Insert rod; 11. Wedge; 12. Spring rod; 13. Storage groove. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] like Figures 1-5 As shown, a low-friction rolling bearing includes a bearing 1. Snap rings 5 ​​are inserted into the inner edges of both sides of the outer ring portion of the bearing 1, and snap rings 5 ​​are also inserted into the outer edges of both sides of the inner ring portion of the bearing 1. A sealing ring 2 is disposed between two snap rings 5 ​​located on the same side of the bearing 1. The sealing ring 2 is embedded in the surface of the snap rings 5 ​​and is rotatably connected to the inner wall of one of the snap rings 5. Figure 4 It is known that the end face of the retaining ring 5 is flush with the end face of the bearing 1, and the end face of the sealing ring 2 is also flush with the end face of the bearing 1. Therefore, the installed retaining ring 5 can prevent the sealing ring 2 from wobbling between the inner and outer rings of the bearing 1. Furthermore, by increasing the contact area between the retaining ring 5 and the sealing ring 2, the internal lubricating oil can be effectively prevented from leaking. The rotatable connection between the sealing ring 2 and one of the retaining rings 5 ​​will not affect the rotation of the inner and outer rings of the bearing 1. A roller 9 is installed between two adjacent rollers inside bearing 1. The roller 9 is rotatably connected to the rollers of bearing 1, and the central axis of the roller 9 is parallel to the central axis of bearing 1. The roller 9 serves to block the rollers of adjacent bearing 1, ensuring a fixed distance between the two rollers and preventing the rollers from rotating when the roller 9 rotates. A coaxial inner tube 8 is rotatably connected to the inner wall of the roller 9. Two coaxial spring rods 12 are symmetrically fixedly installed on the inner wall of the inner tube 8. The telescopic ends of the two spring rods 12 face the two openings of the inner tube 8, and end caps 4 that penetrate the sealing ring 2 are fixedly installed on the telescopic ends of the spring rods 12. A locking block 3 that overlaps the outer surface of the sealing ring 2 is hinged to the surface of the end cap 4. The roller 9 is located inside bearing 1. In use, it is moved by... Pull the spring rod 12 at one end of the inner tube 8 so that the end cap 4 at its telescopic end extends out of the corresponding sealing ring 2. Then, by rotating and moving the locking block 3, the locking block 3 is made vertically parallel to the end face of the sealing ring 2. The elastic contraction of the spring rod 12 can pull the end cap 4 and the vertical locking block 3 to press the outer surface of the sealing ring 2 (the side located outside the bearing 1). Therefore, by using the elastic contraction of the two spring rods 12 in the same inner tube 8, the locking blocks 3 on the two end caps 4 can move relative to each other and squeeze the two sealing rings 2 facing each other. Therefore, by using the two spring rods 12 in multiple inner tubes 8, the two sealing rings 2 can be tightly attached to the two sides of the bearing 1. Even under vibration, the elastic contraction of the spring rod 12 can prevent the sealing ring 2 from falling off.

[0021] To facilitate the storage of the card block 3: the end cap 4 is a T-shaped rotating body and the surface of the end cap 4 is provided with a storage groove 13 for inserting the card block 3. Under normal conditions, the card block 3 rotates to be parallel to the central axis of the spring rod 12 and is embedded in the storage groove 13, thus making it convenient for personnel to pull the end cap 4 through the surface of the sealing ring 2.

[0022] To further stabilize the position of the inner rollers of bearing 1 and ensure that the rollers do not rotate unimpeded: both ends of the inner tube 8 are fitted with protrusions 7. The protrusions 7 at both ends of the inner tube 8 are fixed to the inner sides of the two sealing rings 2 respectively. The sides of the protrusions 7 are arc-shaped and are slidably connected to the inner side of the outer ring of bearing 1 and the surface of the inner rollers of bearing 1. The arc-shaped side of the protrusions 7 near the rollers of bearing 1 is rotatably connected to the rollers 6. The rollers 9 can support the spacing between the roller surfaces of two adjacent bearing 1 rollers, and the arc-shaped surface between two adjacent protrusions 7 can support the ends of the rollers of bearing 1. With the retaining ring 5 fixed in position, the rollers of bearing 1 can be prevented from wobbling left and right. In addition, by using the rollers 6 to contact the end face of the rollers of bearing 1, the clearance fit between the end face of the rollers of bearing 1 and the surface of the protrusions 7 can be ensured, so that the rollers of bearing 1 will not generate friction when rotating. Moreover, the gap formed can also ensure that the lubricating oil can enter smoothly and cover the entire surface of the rollers of bearing 1.

[0023] To further determine the position of the retaining ring 5: A wedge 11, connected by a spring, is embedded in the side of the retaining ring 5. Several wedges 11 on the retaining ring 5 near the inner ring of the bearing 1 are positioned on the edge of the inner ring and inserted into the inner ring of the bearing 1. Several wedges 11 on the retaining ring 5 near the outer ring of the bearing 1 are positioned on the edge of the outer ring and inserted into the outer ring of the bearing 1. Several insert rods 10 are fixedly installed on the surface of the retaining ring 5 and inserted into the surface of the bearing 1. Figure 4 and Figure 5 The insert rod 10 on the outer ring retainer 5 is inserted into the outer ring of the bearing 1, and the insert rod 10 on the inner ring retainer 5 is inserted into the inner ring of the bearing 1. Therefore, the installed retainer 5 can be prevented from rotating, thereby ensuring that the wedge 11 set on the retainer 5 can be smoothly inserted into the corresponding position on the bearing 1. In addition, combined with Figure 5 The wedge 11 has an inclined surface facing the bearing 1. Therefore, when inserting the retaining ring 5, the inclined surface of the wedge 11 engages with the surface of the bearing 1, allowing the wedge 11 to overcome the spring's thrust and be retracted into the retaining ring 5. Once the retaining ring 5 is in place, the spring's thrust causes the wedge 11 to rise and insert into the bearing 1. The side of the wedge 11 facing away from the inside of the bearing 1 is a vertical plane. Therefore, after the wedge 11 is inserted into the bearing 1, it prevents the retaining ring 5 from detaching from the bearing 1. In addition, the engagement area between the inner and outer rings of the bearing 1 and the wedge 11 in this design is a rectangular groove. In summary, by fixing the position of the retaining ring 5, the two ends of the roller of bearing 1 can be blocked, preventing the roller of bearing 1 from sliding off bearing 1. Conversely, by removing the sealing ring 2 on one side and the two retaining rings 5, it is also convenient for personnel to directly pull out the roller inside bearing 1.

[0024] Working principle: After assembling the inner and outer rings of bearing 1, first install two retaining rings 5 ​​and sealing ring 2 on one side, then install the rollers inside bearing 1, and install rollers 9 between two adjacent rollers. Then install two retaining rings 5 ​​and sealing ring 2 on the other side of bearing 1. After the sealing ring 2 is installed, pull the spring rod 12 at one end of the inner tube 8 so that the end cap 4 of its telescopic end extends out of the corresponding sealing ring 2. Then rotate and move the locking block 3 so that the locking block 3 is vertically parallel to the end face of the sealing ring 2. The elastic contraction of the spring rod 12 can pull the end cap 4 and the vertical locking block 3 to press the outer surface of the sealing ring 2. The elastic contraction of the two spring rods 12 in the same inner tube 8 can realize the relative movement of the locking blocks 3 on the two end caps 4 and squeeze the two sealing rings 2 facing each other. Therefore, by using the two spring rods 12 in multiple inner tubes 8, the two sealing rings 2 can be tightly attached to the two sides of bearing 1. Even under vibration, the elastic contraction of the spring rod 12 can prevent the sealing ring 2 from falling off.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A low-friction rolling bearing comprising a bearing (1), characterized in that: The outer ring of the bearing (1) is fitted with retaining rings (5) on both inner sides and the inner ring of the bearing (1) is fitted with retaining rings (5) on both outer sides. A sealing ring (2) is provided between the two retaining rings (5) on the same side of the bearing (1). A roller (9) is provided between two adjacent rollers in the bearing (1). The inner wall of the roller (9) is rotatably connected to an inner tube (8) arranged coaxially. Two spring rods (12) are symmetrically fixedly installed on the inner wall of the inner tube (8). The telescopic ends of the two spring rods (12) are respectively facing the two openings of the inner tube (8) and the telescopic ends of the spring rods (12) are fixedly installed with end caps (4) that penetrate the sealing ring (2). The surface of the end cap (4) is hinged with a locking block (3) that overlaps the outer surface of the sealing ring (2).

2. The low-friction rolling bearing according to claim 1, characterized in that: The sealing ring (2) is embedded in the surface of the retaining ring (5) and the sealing ring (2) is rotatably connected to the inner wall of one of the retaining rings (5).

3. The low-friction rolling bearing according to claim 1, characterized in that: The roller (9) is connected to the bearing (1) by a rolling connection, and the central axis of the roller (9) is set parallel to the central axis of the bearing (1).

4. The low-friction rolling bearing according to claim 1, characterized in that: The end cap (4) is a T-shaped rotating body and the surface of the end cap (4) is provided with a storage groove (13) for inserting into the card block (3).

5. The low-friction rolling bearing according to claim 1, characterized in that: Both ends of the inner tube (8) are fitted with protrusions (7), and the protrusions (7) at both ends of the inner tube (8) are respectively fixed to the inner sides of the two sealing rings (2).

6. The low-friction rolling bearing according to claim 5, characterized in that: The side of the protrusion (7) is arc-shaped and the side of the protrusion (7) is slidably connected to the inner side of the outer ring of the bearing (1) and the inner roller surface of the bearing (1).

7. The low-friction rolling bearing according to claim 6, characterized in that: The protrusion (7) is connected to the roller (6) on the arc surface near the roller of the bearing (1).

8. The low-friction rolling bearing according to claim 1, characterized in that: The retaining ring (5) has a wedge (11) inserted into its side by a spring. Several wedges (11) on the retaining ring (5) near the inner ring of the bearing (1) are set on the inner ring edge and inserted into the inner ring of the bearing (1). Several wedges (11) on the retaining ring (5) near the outer ring of the bearing (1) are set on the outer ring edge and inserted into the outer ring of the bearing (1). Several insert rods (10) that are inserted into the bearing (1) are fixedly installed on the surface of the retaining ring (5).

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