Fine-adjustable bearing pre-tightening device

Abstract

The utility model relates to a fine-adjustable bearing pre-tightening device, which belongs to the technical field of bearing pre-tightening devices and comprises a fixed connecting pipe, a pre-tightening adjusting groove is designed on the periphery of the fixed connecting pipe, an adjusting structure is mounted in the pre-tightening adjusting groove, and the adjusting structure comprises a stable connecting rod, an elastic connecting block and a cushioning spring. The stable connecting rods are mounted in the pre-tightening adjusting grooves in the two sides correspondingly, the elastic connecting blocks are arranged in the pre-tightening adjusting grooves in the other two sides, the positions of the cushioning springs correspond to the positions of the elastic connecting blocks, tightening mounting rings are arranged at the two ends of the fixed connecting pipe, and fixed connecting holes are formed in the outer sides of the tightening mounting rings. By means of the adjusting structure, accessories can be replaced according to actual needs, the connecting effect of the two sides of the bearing can be flexibly adjusted, the connecting stability and the protecting effect of the structures on the two sides of the bearing are improved by tightening the mounting ring, and the environment change adaptability and the bearing strength of the bearing are improved.

Description

Technical Field

[0001] This utility model relates to a finely adjustable bearing preload device, belonging to the technical field of bearing preload devices. Background Technology

[0002] A bearing preload device is a method or device used during bearing assembly to generate a certain axial force in the bearing by changing the relative position of the inner and outer rings, so that all rolling elements are in a uniformly compressed state and the bearing is in a state of zero clearance or even negative clearance.

[0003] A bearing preload device with application number CN202120921503.8 includes a clamping mechanism and a gasket. The clamping mechanism includes a clamping part, a fixing part, and a connecting part. One end of the fixing part has a fixed end that connects to an external fixing device, and the other end is equipped with the connecting part. One end of the clamping part is connected to the connecting part, and the other end has a contact surface that abuts against the bearing. The fixing part, the connecting part, and the clamping part form an installation groove. This bearing preload device can solve the problems of complex structure, insufficient rigidity, difficult installation, and large installation space of existing preload devices. This application also discloses a spindle.

[0004] The above-mentioned device solves the problems of complex structure and difficult installation of existing pre-tightening devices. However, it cannot adjust the overall width and connection strength of the structure according to the actual situation, and its buffering effect against external pressure is poor. Utility Model Content

[0005] The purpose of this invention is to provide a finely adjustable bearing preload device to solve the above problems, which can flexibly adjust the preload effect of the device and improve the buffering effect of the structure on the force during operation.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a finely adjustable bearing preload device, including a fixed connecting pipe, a preload adjustment groove designed around the fixed connecting pipe, an adjustment structure installed inside the preload adjustment groove, tight-position mounting rings provided at both ends of the fixed connecting pipe, a fixed connecting hole provided on the outer side of the tight-position mounting ring, and a preload bolt rotatably engaged inside the fixed connecting hole.

[0007] Preferably, in order to ensure stable installation of the adjustment structure, a fixed threaded groove is provided at the opening of the pre-tightening adjustment groove, and a support baffle is connected to the internal thread of the fixed threaded groove.

[0008] Preferably, in order to improve the adjustment convenience of the adjustment structure, a hexagonal auxiliary block is provided on the outer side of the support plate, and a positioning connection hole is provided inside the hexagonal auxiliary block, and the positioning connection hole and the pre-tightening bolt are slidably engaged with each other.

[0009] Preferably, in order to flexibly adjust the working effect of the structure, the adjustment structure includes a stabilizing connecting rod, an elastic connecting block and a damping spring. The stabilizing connecting rod is installed inside the pre-tightening adjustment grooves on both sides, and the elastic connecting block is set inside the pre-tightening adjustment grooves on the other two sides. The position of the damping spring corresponds to the position of the elastic connecting block.

[0010] Preferably, in order to improve the stability of the tight-fitting mounting ring installation, the stabilizing connecting rod is slidably engaged inside the pre-tightening adjustment groove, one end of the stabilizing connecting rod is in contact with one end of the pre-tightening adjustment groove, and the other end of the stabilizing connecting rod is in contact with the inner surface of the support baffle.

[0011] Preferably, in order to ensure a stable connection to the tight-fitting mounting ring, a fixed threaded hole is provided at the center of the stabilizing connecting rod, and the fixed threaded hole is threadedly connected to the pre-tightening bolt.

[0012] Preferably, in order to improve the shock resistance of the device, the elastic connecting block is slidably engaged inside the pre-tightening adjustment groove, the elastic connecting block has a connecting threaded hole inside, the connecting threaded hole is threadedly connected to the pre-tightening bolt, one end of the shock-absorbing spring is in contact with the elastic connecting block, and the other end of the shock-absorbing spring is in contact with the support plate.

[0013] Preferably, in order to improve the stability of the tight-fitting mounting ring during use, the two sides of the fixed connecting pipe are evenly provided with stabilizing connecting grooves, the inner side of the tight-fitting mounting ring is evenly welded with an arc-shaped positioning plate, and the outer side of the arc-shaped positioning plate is fitted with a damping sleeve, and the damping sleeve and the stabilizing connecting groove are slidably engaged with each other.

[0014] The beneficial effects of this utility model are: by adjusting the structure, the accessories can be replaced according to actual needs, the connection effect on both sides of the bearing can be flexibly adjusted, and the stability and protection effect of the structural connection on both sides of the bearing can be improved by tightening the mounting ring, thereby increasing the adaptability and bearing strength of the bearing to environmental changes. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a side sectional view of the present invention.

[0017] Figure 3 This is a structural schematic diagram of the fixed connecting pipe part in this utility model.

[0018] Figure 4 This is a structural connection diagram of the shock-absorbing spring part in this utility model.

[0019] Figure 5 This is a schematic diagram of the tight-fitting mounting ring part in this utility model.

[0020] In the diagram: 1. Fixed connecting pipe; 2. Pre-tightening adjustment groove; 201. Support baffle; 3. Adjustment structure; 301. Stabilizing connecting rod; 302. Elastic connecting block; 303. Shock-absorbing spring; 4. Tightening mounting ring; 401. Arc-shaped positioning plate; 402. Damping sleeve; 5. Pre-tightening bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 As shown, a finely adjustable bearing preload device includes a fixed connecting pipe 1. Preload adjustment grooves 2 are designed around the fixed connecting pipe 1, and adjustment structures 3 are installed inside the preload adjustment grooves 2. Tightening mounting rings 4 are provided at both ends of the fixed connecting pipe 1, and fixed connection holes are opened on the outer sides of the tightening mounting rings 4. Preload bolts 5 are rotatably engaged inside the fixed connection holes. This finely adjustable bearing preload device mainly consists of the fixed connecting pipe 1. The preload adjustment grooves 2 around the fixed connecting pipe 1 are designed for installing the adjustment structures 3. These adjustment structures 3 allow users to finely adjust the bearing preload. Furthermore, tightening mounting rings 4 are provided at both ends of the fixed connecting pipe 1, and fixed connection holes are opened on the outer sides of these mounting rings. Through these connection holes, the preload bolts 5 can be installed and rotatably engaged, thereby further adjusting and fixing the bearing preload state.

[0023] The preload adjustment groove 2 has a fixed threaded groove at its opening. These fixed threaded grooves are used for threaded connection with specific components to achieve a stable installation. The internal threaded connection of the fixed threaded groove is a support plate 201, which supports and fixes the preload structure to ensure the accuracy and stability of the adjustment. The outer side of the support plate 201 is provided with a hexagonal auxiliary block. The design of the hexagonal auxiliary block is convenient for rotation and adjustment with tools, thus facilitating user operation. The interior of the hexagonal auxiliary block has a positioning connection hole, which slides and engages with the preload bolt 5. This design allows the preload bolt 5 to slide within the positioning connection hole, thereby achieving a fine-tuning function while maintaining a stable connection. By rotating the preload bolt 5, the preload state of the bearing can be further adjusted to ensure that it adapts to different working environments and requirements.

[0024] The adjustment structure 3 includes a stabilizing connecting rod 301, an elastic connecting block 302, and a damping spring 303. The stabilizing connecting rod 301 is installed inside the pre-tightening adjustment grooves 2 on both sides, and the elastic connecting block 302 is installed inside the other two pre-tightening adjustment grooves 2. The positions of the damping spring 303 and the elastic connecting block 302 correspond to each other. The stabilizing connecting rod 301 is slidably engaged inside the pre-tightening adjustment groove 2, with one end of the stabilizing connecting rod 301 fitting against one end of the pre-tightening adjustment groove 2, and the other end fitting against the inner surface of the support baffle 201. A fixing threaded hole is provided at the center of the stabilizing connecting rod 301, and the fixing threaded hole is threadedly connected to the pre-tightening bolt 5. The elastic connecting block 302 is slidably engaged inside the pre-tightening adjustment groove 2, and a connecting threaded hole is provided inside the elastic connecting block 302, and the connecting threaded hole is threadedly connected to the pre-tightening bolt 5. Next, one end of the damping spring 303 is in contact with the elastic connecting block 302, and the other end of the damping spring 303 is in contact with the support plate. Through the synergistic action of the stabilizing connecting rod 301, the elastic connecting block 302, and the damping spring 303, the adjustment structure 3 can achieve precise adjustment and stable support of the bearing preload. At the same time, since these components are designed with sliding snap-fit ​​and threaded connection structures, users can easily adjust the position and preload of the entire adjustment structure 3 by rotating the preload bolt 5. This design not only improves the stability and service life of the bearing, but also provides users with a more convenient and efficient operating experience. In summary, the adjustment structure 3 of the fine-tunable bearing preload device is a cleverly designed and powerful component that can meet the bearing preload requirements under different working environments and needs, providing a strong guarantee for the stable operation of the transmission system.

[0025] The fixed connecting pipe 1 has evenly spaced stabilizing grooves on both sides. The inner side of the tight-fitting mounting ring 4 is evenly welded with arc-shaped positioning plates 401. The outer side of the arc-shaped positioning plates 401 is fitted with a damping sleeve 402. The damping sleeve 402 and the stabilizing grooves slide and engage with each other. Through the synergistic effect of the stabilizing grooves on the fixed connecting pipe 1, the arc-shaped positioning plates 401 on the tight-fitting mounting ring 4, and the damping sleeve 402, this fine-tunable bearing preload device not only achieves precise adjustment of the bearing preload, but also improves the stability and durability of the entire device. The sliding engagement design of the damping sleeve 402 not only reduces vibration and noise, but also provides additional buffering and stability for the adjustment process. This comprehensive design enables the bearing preload device to adapt to various complex working environments and ensure the smooth operation of the transmission system.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tunable bearing pre-load device, characterized by: Including the fixed connection pipe (1), the four around design of the fixed connection pipe (1) has pre-tightening adjusting groove (2), the inside of pre-tightening adjusting groove (2) is installed with adjusting structure (3), the both ends of fixed connection pipe (1) are provided with tight installation ring (4), the outside of tight installation ring (4) is provided with fixed connection hole, the inside of fixed connection hole is rotatably connected with pre-tightening bolt (5).

2. The tunable bearing pre-load device of claim 1, wherein: The fixed thread groove is formed at the opening of the pre-tightening adjusting groove (2), and the support disc (201) is screwed into the fixed thread groove.

3. The tunable bearing pre-load apparatus of claim 2, wherein: The outside of the support disc (201) is provided with a hexagonal auxiliary block, and the inside of the hexagonal auxiliary block is provided with a positioning connection hole.

4. The tunable bearing pre-load apparatus of claim 2, wherein: The adjusting structure (3) includes a stable connecting rod (301), an elastic connecting block (302) and a shock absorbing spring (303), the stable connecting rod (301) is respectively installed in the inside of the pre-tightening adjusting groove (2) on both sides, the elastic connecting block (302) is arranged in the inside of the pre-tightening adjusting groove (2) on the other two sides, and the position of the shock absorbing spring (303) corresponds to the position of the elastic connecting block (302).

5. The tunable bearing pre-load apparatus of claim 4, wherein: The stable connecting rod (301) is slidably connected in the pre-tightening adjusting groove (2), one end of the stable connecting rod (301) is in close contact with one end of the pre-tightening adjusting groove (2), and the other end of the stable connecting rod (301) is in close contact with the inner surface of the support disc (201).

6. The tunable bearing pre-load apparatus of claim 4, wherein: The stable connecting rod (301) is slidably connected in the pre-tightening adjusting groove (2), one end of the stable connecting rod (301) is in close contact with one end of the pre-tightening adjusting groove (2), and the other end of the stable connecting rod (301) is in close contact with the inner surface of the support disc (201).

7. The tunable bearing pre-load apparatus of claim 4, wherein: The stable connecting rod (301) is slidably connected in the pre-tightening adjusting groove (2), one end of the stable connecting rod (301) is in close contact with one end of the pre-tightening adjusting groove (2), and the other end of the stable connecting rod (301) is in close contact with the inner surface of the support disc (201).

8. The tunable bearing pre-load apparatus of claim 1, wherein: The stable connecting rod (301) is slidably connected in the pre-tightening adjusting groove (2), one end of the stable connecting rod (301) is in close contact with one end of the pre-tightening adjusting groove (2), and the other end of the stable connecting rod (301) is in close contact with the inner surface of the support disc (201). The stable connecting groove is uniformly formed on the both sides of the fixed connection pipe (1), the inner side of the tight installation ring (4) is uniformly welded with the arc-shaped positioning plate (401), the outer side of the arc-shaped positioning plate (401) is sleeved with the damping sleeve (402), and the damping sleeve (402) and the stable connecting groove are slidably connected.

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