Double-row tapered roller bearing with inner locking

Abstract

The utility model discloses a kind of inner locking double-row tapered roller bearings, including outer ring, the conical hole is set in outer ring inner side, the thread hole is set in conical hole inner side, the conical block is provided in conical hole inner side, the thread is fixedly connected with the outside of conical block, the thread and thread hole screw thread cooperation connection, the rotating handle is fixedly connected with the rear end of conical block, by rotating rotating handle and driving the synchronous rotation of inner side conical block, under the effect of thread cooperation connection, so that the thread of conical hole outside is rotated along thread hole inner side, to take out conical block, after taking out, along with conical hole inner side injection of lubricating grease, reverse rotation rotating handle can make conical block contact with sealing washer, to complete the injection of injection work of lubricating grease, prolongs the service life of bearing.

Description

Technical Field

[0001] This utility model relates to the field of tapered roller bearing technology, and in particular to an internal locking double-row tapered roller bearing. Background Technology

[0002] The internal locking double-row tapered roller bearing is a high-performance precision rolling bearing capable of withstanding heavy complex loads and integrating a preload adjustment and locking mechanism within the bearing. Its core feature lies in the "internal locking" structure, which allows the bearing to be set and locked with the optimal preload at the factory, eliminating the need for complex clearance adjustments during installation and enabling "installation and use immediately".

[0003] However, the existing type of internal locking double-row tapered roller bearing still has certain defects: during use, due to the good sealing performance of the internal locking double-row tapered roller bearing, it can effectively prevent dust from the outside from entering the tapered rollers on the inside. However, after long-term use, the lubricating oil on the inside may dry out, which will lead to a decrease in bearing performance and a reduction in transmission efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an internally locking double-row tapered roller bearing that allows lubricating oil to be added to the inner side of the bearing through a tapered hole during use, thus avoiding the problem of bearing performance degradation after prolonged use.

[0005] To achieve the above objectives, an internal locking double-row tapered roller bearing is provided, comprising an outer ring, a tapered hole on the inner side of the outer ring, a threaded hole on the inner side of the tapered hole, a tapered block on the inner side of the tapered hole, and a thread fixedly connected to the outer side of the tapered block, wherein the thread engages with the threaded hole.

[0006] A rotating handle is fixedly connected to the rear end of the conical block.

[0007] According to the aforementioned internal locking double-row tapered roller bearing, a sealing gasket is fixedly connected to the front end of the inner side of the tapered bore.

[0008] According to the aforementioned internal locking double-row tapered roller bearing, a limiting groove is formed on the inner side of the outer ring.

[0009] According to the aforementioned internal locking double-row tapered roller bearing, an inner ring is rotatably connected to the inner side of the outer ring.

[0010] According to the aforementioned internal locking double-row tapered roller bearing, a sliding groove is provided on the outer side of the inner ring, and the limiting groove is arranged opposite to the sliding groove.

[0011] According to the aforementioned internal locking double-row tapered roller bearing, a cage is rotatably connected to the inner side of the sliding groove.

[0012] According to the aforementioned internal locking double-row tapered roller bearing, tapered rollers are rotatably connected to the inner side of the sliding groove, and the inner side of the cage is rotatably connected to the tapered rollers.

[0013] The above solution has the following advantages: When in use, turning the handle will cause the tapered block at the front end to rotate along the inside of the tapered hole. Under the action of the threaded connection, the tapered block can be removed, thereby enabling the bearing to be lubricated.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the overall structure of an internally locking double-row tapered roller bearing according to this utility model;

[0017] Figure 2 This is a schematic diagram of the internal components of an internally locking double-row tapered roller bearing according to this utility model;

[0018] Figure 3 This is a schematic diagram of the cage and inner tapered roller structure of an internally locking double-row tapered roller bearing according to this utility model.

[0019] Figure 4 This is a cross-sectional view of the outer ring structure of an internally locking double-row tapered roller bearing according to this utility model.

[0020] Legend:

[0021] 1. Inner ring; 2. Outer ring; 3. Tapered bore; 4. Cage; 5. Tapered roller; 6. Sliding groove; 7. Sealing gasket; 8. Limiting groove; 9. Tapered block; 10. Threaded hole; 11. Thread; 12. Rotating handle. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-4This utility model provides an internal locking double-row tapered roller bearing, including an outer ring 2, a tapered hole 3 on the inner side of the outer ring 2, a threaded hole 10 on the inner side of the tapered hole 3, a tapered block 9 on the inner side of the tapered hole 3, and a thread 11 fixedly connected to the outer side of the tapered block 9, with the thread 11 threadedly engaged with the threaded hole 10.

[0024] The rear end of the cone-shaped block 9 is fixedly connected to a rotating handle 12.

[0025] A sealing washer 7 is fixedly connected to the front end of the inner side of the tapered hole 3. The sealing washer 7 is made of nitrile rubber, which has good oil resistance and excellent resistance to grease and mineral oil. It also has excellent wear resistance and fit, which can prevent the grease inside from leaking during use. When it comes into contact with the tapered hole 9 at the rear end, it can provide good sealing and prevent the grease inside from being thrown out of the bearing during use.

[0026] A limiting groove 8 is provided on the inner side of the outer ring 2. The inner ring 1 is rotatably connected to the inner side of the outer ring 2. A sliding groove 6 is provided on the outer side of the inner ring 1. The limiting groove 8 and the sliding groove 6 are arranged opposite to each other. The limiting groove 8 adopts an inner V-shaped structure, and the sliding groove 6 adopts an outer V-shaped structure. In the design, the extension lines of the conical generatrices of the sliding groove 6 and the limiting groove 8 converge on the axis of the bearing. The sliding groove 6 and the limiting groove 8 cooperate to make the inner side have a double row layout during use. A connecting ring is provided on the inner side of the sliding groove 6 and the limiting groove 8. The connecting ring connects the two sets of inner rings. A limiting block is provided on the ring, which cooperates with the sliding groove 6 of the inner ring 1 to realize the self-locking function of the inner ring.

[0027] A retainer 4 is rotatably connected to the inner side of the sliding groove 6. The upper end of the retainer 4 has multiple sets of pre-positioning holes. During use, the pre-positioning holes can cooperate with the tapered rollers 5. The retainer 4 allows the inner tapered rollers 5 to roll freely without colliding with each other. When the load on the outside is transmitted to the inside, the retainer 4 can buffer the force on the outside, thereby effectively protecting the inner tapered rollers.

[0028] A tapered roller 5 is rotatably connected to the inner side of the sliding groove 6, and the inner side of the cage 4 is rotatably connected to the tapered roller 5. When in use, the tapered roller 5 can move in conjunction with the outer cage 4. When the tapered roller 5 rotates, it drives the outer cage 4 to rotate synchronously. When the cage rotates, it can constrain the movement trajectory of the roller through the side wall and bottom of the inner pre-positioning hole. The tapered roller 5 is made of high carbon chromium bearing steel, which has high temperature resistance and high wear resistance when in use. The cage 4 is made of brass, which can withstand certain high temperatures and high loads when in use.

[0029] Working Principle: In most cases, the inner ring 1 is connected to the outer drive shaft. When the drive shaft rotates, it drives the inner ring 1 to rotate. The outer side of the inner ring 1 has a sliding groove 6. When the inner ring 1 rotates, it drives the outer sliding groove 6 to rotate. The rotation of the sliding groove 6 drives the outer tapered roller 5 to rotate on its own axis and revolve around the sun. When the tapered roller 5 rotates, it drives the outer cage 4 to move. During rotation, the cage 4 rotates synchronously with the revolve of the tapered roller 5, and the cage 4 can restrain the movement of the inner tapered roller 5, ensuring... The transmission is smooth, avoiding roller collisions or deviations, thus achieving efficient power transmission. After prolonged use, the grease inside the tapered roller 5 will decrease. At this time, rotating the handle 12 inside the tapered hole 3 on the inner side of the outer ring 2 will cause the tapered block 9 at the front end to rotate synchronously. Under the action of the threaded connection, the thread 11 on the outer side of the tapered hole 9 will rotate along the inner side of the threaded hole 10, thereby removing the tapered block 9. After removal, grease is injected along the inner side of the tapered hole 9. Reverse rotation of the handle 12 will make the tapered block 9 contact the sealing gasket 7, thus completing the sealing after oil injection.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An internally locking double-row tapered roller bearing, comprising an outer ring (2), characterized in that, The outer ring (2) has a tapered hole (3) on its inner side, and a threaded hole (10) is provided on the inner side of the tapered hole (3). A tapered block (9) is provided on the inner side of the tapered hole (3), and a thread (11) is fixedly connected to the outer side of the tapered block (9). The thread (11) is threadedly connected to the threaded hole (10). The rear end of the conical block (9) is fixedly connected to a rotating handle (12).

2. The internal locking double-row tapered roller bearing according to claim 1, characterized in that, A sealing gasket (7) is fixedly connected to the front end of the inner side of the tapered hole (3).

3. The internal locking double-row tapered roller bearing according to claim 2, characterized in that, A limiting groove (8) is provided on the inner side of the outer ring (2).

4. The internal locking double-row tapered roller bearing according to claim 3, characterized in that, The inner ring (1) is rotatably connected to the inner side of the outer ring (2).

5. The internally locking double-row tapered roller bearing according to claim 4, characterized in that, The inner ring (1) has a sliding groove (6) on its outer side, and the limiting groove (8) is arranged opposite to the sliding groove (6).

6. The internal locking double-row tapered roller bearing according to claim 5, characterized in that, A retainer (4) is rotatably connected to the inner side of the sliding groove (6).

7. The internally locking double-row tapered roller bearing according to claim 6, characterized in that, The inner side of the sliding groove (6) is rotatably connected to a tapered roller (5), and the inner side of the retainer (4) is rotatably connected to the tapered roller (5).

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