A bearing assembly apparatus

Abstract

The application relates to the technical field of bearing assembly, in particular to a bearing assembly equipment. In order to solve the problem that after pairing, the inner shaft sleeve and the outer shaft sleeve are not easy to assemble due to the too large size difference of the ball groove, the equipment comprises a rack, pre-stacking mechanisms are arranged on the two sides of the rack, the pre-stacking mechanisms are used for storing the inner shaft sleeve and the outer shaft sleeve which are detected and completed, a matching mechanism is arranged between the two pre-stacking mechanisms of the rack, and the matching mechanism is used for selecting and assembling the inner shaft sleeve and the outer shaft sleeve which are detected and completed and are matched in size. The application has the effect of improving the size matching of the ball groove of the inner shaft sleeve and the outer shaft sleeve.

Description

Technical Field

[0001] This application relates to the field of bearing assembly, and in particular to a bearing assembly device. 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. Ball bearings mainly consist of an outer bushing, an inner bushing, and balls. The correspondence between the dimensions of the inner and outer bushings is crucial for the assembly process.

[0003] Some inner and outer bushings, after being paired, have issues with ball joint assembly due to significant differences in ball groove dimensions. This needs to be improved. Utility Model Content

[0004] To improve the compatibility of the ball groove dimensions between the inner and outer bushings, this application provides a bearing assembly device.

[0005] The bearing assembly equipment provided in this application adopts the following technical solution: A bearing assembly device includes a frame, with pre-stacking mechanisms on both sides of the frame for storing inspected inner and outer bushings; a matching mechanism is located between the two pre-stacking mechanisms on the frame for selecting and assembling inspected and sized matching inner and outer bushings; a material transfer assembly is also provided at the pre-stacking mechanisms for transferring the inner or outer bushings from the pre-stacking mechanisms to the matching mechanism.

[0006] By adopting the above technical solution, pre-stacking mechanisms are set on both sides of the frame to store the tested inner and outer bushings, ensuring the orderly storage of parts to be assembled. At the same time, a matching mechanism is set in the middle of the frame, which can automatically select and assemble tested and qualified inner and outer bushings with matching dimensions, significantly improving assembly efficiency and accuracy, and effectively solving the assembly difficulties caused by mismatched ball groove dimensions.

[0007] Preferably, the pre-stacking mechanism includes a pre-stacking drive, a pre-stacking mounting frame, and a plurality of pre-stacking plates. The pre-stacking drive is mounted on a frame, the pre-stacking mounting frame is mounted on the pre-stacking drive and is vertically arranged, and the plurality of pre-stacking plates are evenly arranged on the pre-stacking mounting frame in the vertical direction. Pre-stacking grids are formed between adjacent pre-stacking plates, and the inner or outer bushings that have been tested are transferred to the pre-stacking grids.

[0008] By adopting the above technical solution, the pre-stacking mechanism can achieve orderly storage of inner and outer bushings, ensuring that the inspected parts can be arranged sequentially in the pre-stacking compartments. The pre-stacking drive component allows the pre-stacking mounting frame to move vertically, thereby automatically adjusting the position of the pre-stacking plate, facilitating the selection and assembly of subsequent optional mechanisms. This design not only improves assembly efficiency but also reduces manual intervention and lowers the error rate.

[0009] Preferably, the fitting mechanism includes a fitting platform, a fitting plate, and a fitting transmission assembly. The fitting platform is mounted on a frame, with one end located between two pre-stacked mounting frames and the other end extending away from the pre-stacked mounting frames. A fitting hole is provided at the end of the fitting platform near the pre-stacked mounting frames, the diameter of which is larger than the outer diameter of the inner bushing and smaller than the outer diameter of the outer bushing. The fitting plate is movably mounted on the fitting platform directly below the fitting hole. The fitting plate is driven upward to insert the inner bushing through the fitting hole into the outer bushing located on the fitting platform. The fitting transmission assembly is mounted on the fitting platform to transmit the successfully inserted inner and outer bushings to the end away from the fitting hole.

[0010] By adopting the above technical solution, this matching mechanism can precisely control the assembly process of the inner and outer bushings. The design of the matching platform allows the inner and outer bushings to be accurately positioned at predetermined locations, ensuring that no misalignment occurs during assembly. The diameter of the matching hole is designed to be larger than the outer diameter of the inner bushing but smaller than the outer diameter of the outer bushing, effectively preventing the outer bushing from accidentally entering the matching hole, while ensuring that the inner bushing can smoothly enter the inner bushing. The movable matching plate, in conjunction with the drive device, can accurately push the inner bushing into the inner bushing, achieving efficient assembly of the two. The setting of the matching transmission component further improves assembly efficiency, enabling the rapid transfer of the successfully assembled bearing assembly to the next process or assembly equipment, reducing manual intervention and improving the level of production automation.

[0011] Preferably, the fitting mechanism further includes a defective channel, which is installed at one end of the fitting platform near the fitting hole and extends toward the ground; the fitting transmission assembly can transmit inner or outer bushings with unqualified dimensions to the defective channel for sliding along the defective channel.

[0012] By adopting the above technical solution, the optional assembly mechanism is equipped with a defective channel, which allows inner or outer bushings that fail the inspection to be accurately transferred to the defective channel by the optional transmission component and then slid along the channel to a designated position. This not only improves the equipment's ability to handle defective products and prevents them from flowing into subsequent processes, but also reduces the need for manual intervention and improves the automation level and efficiency of the entire assembly process.

[0013] Preferably, the optional transmission component includes an optional drive, an optional plate, and an optional connecting rod. The optional drive is mounted on the optional platform via a bracket, and the optional plate is mounted on the optional drive via the optional connecting rod. The optional plate is parallel to the optional platform, and the optional drive drives the optional plate to move along the length direction of the optional platform.

[0014] By adopting the above technical solution, the design of the optional transmission component allows the inner and outer bushings to be assembled at precise positions on the fitting table, ensuring that the inner bushing can be accurately embedded into the outer bushing. The use of the optional drive component enables automated control, improving assembly efficiency and accuracy, and reducing errors caused by manual operation. Simultaneously, the parallel design of the fitting plate and the fitting table ensures the stability of the inner and outer bushings during movement, avoiding assembly failures due to tilting or offset.

[0015] Preferably, the end of the fitting platform away from the fitting hole is also provided with a detection point. The fitting drive can drive the fitting plate to move along the length of the fitting platform to transfer the successfully fitted inner and outer bushings to the assembly detection point. The fitting transfer assembly also includes a clearance cylinder and a clearance plate. The clearance cylinder is mounted on the fitting drive, and the piston rod of the clearance cylinder is connected to the clearance plate. The clearance plate is located at the end of the fitting plate away from the fitting hole. The distance between the highest point of the clearance plate and the fitting platform is greater than the height of the outer bushing. The clearance plate and the fitting plate move synchronously to push the successfully fitted inner and outer bushings, which have been detected at the assembly detection point, away from the fitting hole.

[0016] By adopting the above technical solutions, it is ensured that the successfully embedded inner and outer bushings can be accurately transferred to the assembly inspection point for further quality inspection, thus improving the reliability of product quality control. Simultaneously, the design of the clearance cylinder and clearance plate allows for the efficient movement of qualified products away from the optional hole after inspection, preventing finished product accumulation and improving production efficiency. Furthermore, the distance design between the highest point of the clearance plate and the optional stage effectively prevents jamming of the outer bushing during the pushing process, ensuring the stability and safety of equipment operation.

[0017] Preferably, there is a protective gap between the optional plate and the optional platform, and the width of the protective gap is less than the height of the outer bushing.

[0018] By adopting the above technical solution, the protective gap between the optional plate and the optional platform can effectively prevent the outer bushing from accidentally getting stuck or damaged during assembly, thus improving the stability and reliability of the equipment. At the same time, the width of the protective gap is less than the height of the outer bushing, ensuring that the outer bushing will not shift or fall off when pushed, further improving assembly accuracy and efficiency.

[0019] Preferably, the pre-stack drive can be a lead screw structure.

[0020] By adopting the above technical solution, the pre-stacking drive component uses a lead screw structure, which improves the stability and accuracy of the pre-stacking mechanism. The lead screw structure enables smooth and precise vertical movement, ensuring that the inner and outer bushings are accurately placed in the pre-stacking grid during the pre-stacking process, thereby avoiding assembly failure or damage caused by positional deviations. At the same time, the lead screw structure has high load-bearing capacity and a long service life, effectively improving the working efficiency and reliability of the entire bearing assembly equipment.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. Pre-stacking mechanisms are installed on both sides of the frame to store the inspected inner and outer bushings, ensuring the orderly storage of parts to be assembled. Simultaneously, a matching mechanism is installed in the middle of the frame, which can automatically select and assemble qualified and dimensionally matched inner and outer bushings, significantly improving assembly efficiency and accuracy, and effectively solving the assembly difficulties caused by mismatched ball groove dimensions. 2. The pre-stacking mechanism enables the orderly storage of inner and outer bushings, ensuring that inspected components are arranged sequentially within the pre-stacking compartments. The pre-stacking drive allows the pre-stacking mounting bracket to move vertically, automatically adjusting the position of the pre-stacking plates, facilitating subsequent selection and assembly of optional mechanisms. This design not only improves assembly efficiency but also reduces manual intervention and lowers the error rate. 3. This matching mechanism can precisely control the assembly process of the inner and outer bushings. The design of the matching platform allows the inner and outer bushings to be accurately positioned at predetermined locations, ensuring no misalignment occurs during assembly. The diameter of the matching hole is designed to be larger than the outer diameter of the inner bushing but smaller than the outer diameter of the outer bushing, effectively preventing the outer bushing from accidentally entering the matching hole while ensuring that the inner bushing can smoothly enter the outer bushing. The movable matching plate, in conjunction with the drive device, can accurately push the inner bushing into the outer bushing, achieving efficient assembly of both. The setting of the matching transfer component further improves assembly efficiency, enabling the rapid transfer of the successfully assembled bearing assembly to the next process or assembly equipment, reducing manual intervention and improving the level of production automation. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a bearing assembly device according to an embodiment of this application.

[0023] Figure 2 This is a cross-sectional view used in the implementation scheme of this application to illustrate the positional relationship between the pre-stacking mechanism and the optional mechanism.

[0024] Figure 3 yes Figure 2 An enlarged diagram of A in the diagram.

[0025] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Pre-stacking mechanism; 21. Pre-stacking drive; 22. Pre-stacking mounting frame; 23. Pre-stacking plate; 24. Pre-stacking grid; 3. Optional mechanism; 31. Optional platform; 311. Optional hole; 312. Detection point; 32. Optional plate; 33. Optional transmission assembly; 331. Optional drive; 332. Optional moving plate; 333. Optional connecting rod; 334. Yielding cylinder; 335. Yielding plate; 336. Protective gap; 34. Defective passage; 4. Material transfer assembly; 41. Material transfer plate. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0027] This application discloses a bearing assembly device. (Refer to...) Figure 1 The bearing testing equipment includes a frame 1, with pre-stacking mechanisms 2 on both sides of the frame 1. The pre-stacking mechanisms 2 are used to store the inner and outer bushings that have been tested. A matching mechanism 3 is provided between the two pre-stacking mechanisms 2 on the frame 1. The matching mechanism 3 is used to select and assemble the inner and outer bushings that have been tested and whose dimensions match. A material transfer component 4 is also provided at the pre-stacking mechanism 2. The material transfer component 4 is used to transfer the inner or outer bushing at the pre-stacking mechanism 2 to the matching mechanism 3.

[0028] After the inner and outer bushings are inspected at the inspection mechanisms on both sides of the frame 1, they are each transported to the corresponding pre-stacking mechanism 2 by the material transfer component 4. When there are matching inner and outer bushings in the two pre-stacking mechanisms 2, the material transfer component 4 moves the inner and outer bushings located at the pre-stacking mechanism to the matching mechanism 3 for assembly.

[0029] Reference Figure 1 In this embodiment, the material transfer component 4 consists of a material transfer plate 41 and a material transfer cylinder; the pre-stacking mechanism 2 includes a pre-stacking drive component 21, which is a lead screw structure in this embodiment. The frame of the lead screw structure is installed on the frame 1, the motor of the lead screw structure is located at the top and connected to the lead screw, and the lead screw of the lead screw structure is set vertically.

[0030] A pre-stacking mounting bracket 22 is threaded onto the lead screw. The length direction of the pre-stacking mounting bracket 22 is parallel to the vertical direction, and the pre-stacking mounting bracket 22 can move up and down along the length direction of the lead screw. Several pre-stacking plates 23 are welded to the pre-stacking mounting bracket 22 along its length direction. The pre-stacking plates 23 are evenly arranged on the pre-stacking mounting bracket 22, and pre-stacking grids 24 are formed between adjacent pre-stacking plates 23. The inner or outer bushings that have passed inspection are transferred to the pre-stacking grids 24 via the material transfer assembly 4. In this embodiment, both unqualified inner or outer bushings and qualified inner or outer bushings of different sizes are transferred to the pre-stacking grids 24 by the material transfer assembly 4.

[0031] In this embodiment, after the inner bushing is inspected, it is pre-stacked in the pre-stack grid 24 corresponding to the inner bushing. When several pre-stack grids 24 on one side of the inner bushing are full, the inspection of the inner bushing will stop until there is an empty pre-stack grid 24. If there is an inner bushing that fails the inspection, it will be transferred to an empty pre-stack grid 24 by the material transfer component 4 after the inspection is completed. At this time, the pre-stack mounting frame 22 does not move, so that the pre-stack grid 24 with the defective inner bushing is kept at a height that can be used to transfer the inspected inner bushing, and waits for the next inner bushing to be inspected. When the next inner bushing is inspected, the material transfer component 4 transfers the defective inner bushing from the pre-stack grid 24 to the matching mechanism 3. At the same time, the material transfer component 4 also moves the inspected inner bushing to the pre-stack grid 24. If, during the inspection process, there is an outer bushing that passes inspection and matches the size of an inner bushing in a certain pre-stacking compartment 24, the material transfer component 4 moves the pre-stacking compartment 24 of the matched outer bushing to a height where the inspected inner bushing can be transferred. At the same time, the material transfer component 4 transfers the previous inner bushing from the pre-stacking compartment 24 to the matching mechanism 3, and moves the currently inspected inner bushing to an empty pre-stacking compartment 24. Meanwhile, the next inner bushing is moved to the inspection mechanism for inspection.

[0032] In this embodiment, the detection and transmission method of the outer bushing is the same as that of the inner bushing, but the detection of the outer bushing and the inner bushing is not completely synchronized. Whether to perform the next bushing detection depends on whether there is an empty pre-stack cell 24 or whether there is a pre-stack cell 24 that is about to be empty.

[0033] Reference Figure 2 and Figure 3 The selection mechanism 3 includes a selection table 31, which is mounted on the frame 1. The length direction of the selection table 31 is perpendicular to the material transfer direction of the material transfer component 4. One end of the length direction of the selection table 31 is located between two pre-stack mounting frames 22, and the other end of the length direction of the selection table 31 extends away from the pre-stack mounting frame 22, and the extension direction is the opening direction of the pre-stack grid 24.

[0034] The selection platform 31 has a selection hole 311 at one end near the pre-stacked mounting bracket 22. The diameter of the selection hole 311 is larger than the outer diameter of the inner bushing and smaller than the outer diameter of the outer bushing. A selection plate 32 is provided directly below the selection hole 311 on the selection platform 31. A cylinder is connected to the bottom of the selection plate 32. The cylinder controls the raising and lowering of the selection plate 32. The size of the selection plate 32 is the same as the size of the selection hole 311. When the selection plate 32 is driven by the cylinder to be raised to the highest point, the top wall of the selection plate 32 is flush with the top wall of the selection platform 31.

[0035] The selection mechanism 3 also includes a defective channel 34, which is installed at one end of the selection platform 31 near the selection hole 311 and extends toward the ground. The selection platform 31 is also provided with a selection transmission component 33, which can reciprocate along the length of the selection platform 31.

[0036] In actual operation, the inner bushing can be transferred to the selection plate 32 by the material transfer component 4, and the outer bushing can be transferred to the selection stage 31 by the material transfer component 4. If there is an outer bushing that passes inspection and matches the size of the inner bushing in a certain pre-stacked grid 24, the selection plate 32 is driven to rise so that the inner bushing passes through the selection hole 311 and is embedded in the outer bushing located on the selection stage 31, and is transferred by the selection transfer component 33 to the end away from the selection hole 311. If there is an inner bushing or outer bushing that fails inspection, the material transfer component 4 transfers the inner bushing that fails inspection to the selection plate 32 and raises it to the height of the selection stage 31, or transfers the outer bushing that fails inspection to the selection stage 31, and is transferred by the selection transfer component 33 to the side near the selection hole 311 and slides down along the defective channel 34.

[0037] Reference Figure 2 and Figure 3 The optional transmission component 33 includes an optional drive component 331, which is mounted directly above the optional platform 31 and connected to its side wall. In this embodiment, the optional drive component 331 is a linear drive structure and can be driven by a linear motor. An optional connecting rod 333 is connected to the optional drive component 331 via a slider. The optional connecting rod 333 is vertically positioned, and an optional moving plate 332 is bolted to the end of the optional connecting rod 333 furthest from the optional drive component 331. The optional moving plate 332 is horizontally positioned parallel to the optional platform 31, and a protective gap 336 exists between the optional moving plate 332 and the optional platform 31. The width of the protective gap 336 is less than the height of the outer bushing. The optional drive component 331 drives the optional moving plate 332 to move along the length of the optional platform 31.

[0038] The end of the selection stage 31 away from the selection hole 311 is also provided with a detection point 312. The selection drive component 331 can drive the selection moving plate 332 to move along the length direction of the selection stage 31 so as to transfer the successfully embedded inner bushing and outer bushing to the assembly detection point 312.

[0039] A clearance cylinder 334 is bolted to one end of the optional drive component 331 away from the optional hole 311. The piston rod of the clearance cylinder 334 faces downward and is connected to a clearance plate 335. The clearance plate 335 is located at the end of the optional plate 32 away from the optional hole 311. The distance between the highest point of the clearance plate 335 and the optional platform 31 is greater than the height of the outer bushing. The clearance plate 335 is flush with the height of the optional moving plate 332 at its lowest point. The clearance plate 335 and the optional moving plate 332 move synchronously to push the successfully fitted inner and outer bushings, which have been inspected at the assembly inspection point 312, away from the optional hole 311.

[0040] In actual operation, if there is an outer bushing that has passed inspection and matches the size of the inner bushing in a certain pre-stacked compartment 24, the optional drive unit 331 drives the optional moving plate 332 to move above the defective channel 34 in advance. At this time, the material transfer assembly 4 transfers the outer bushing to the optional table 31. The optional plate 32 is driven to rise so that the inner bushing passes through the optional hole 311 and is embedded in the outer bushing located on the optional table 31. The clearance cylinder 334 is activated to lower the clearance plate 335 to be flush with the optional plate 32. At this time, the optional drive unit 331 is activated to control the optional moving plate 332 and the clearance plate 335 to move simultaneously to the end away from the optional hole 311. The clearance plate 335 first pushes away the assembled inner and outer bushings located at the inspection point 312. At the same time, the optional moving plate 332 pushes the assembled inner and outer bushings located at the optional hole 311 to the inspection point 312. If there is an unqualified inner bushing or outer bushing, the material transfer assembly 4 transfers the unqualified inner bushing to the optional plate 32 and raises it to the height of the optional stage 31, or transfers the unqualified outer bushing to the optional stage 31. At this time, the optional driving component 331 drives the optional moving plate 332 to move towards the optional hole 311 to push the unqualified outer or inner bushing into the defective channel 34.

[0041] The implementation principle of a bearing assembly device according to an embodiment of this application is as follows: after the inner or outer bushing is inspected, it is pre-stacked in the pre-stack grid 24 corresponding to the inner bushing. When several pre-stack grids 24 on one side of the inner or outer bushing are full, the inner or outer bushing will stop inspection until there is an empty pre-stack grid 24.

[0042] If any inner or outer bushing fails inspection, it is transferred by the material transfer assembly 4 to an empty pre-stacking compartment 24 after inspection. At this time, the pre-stacking mounting bracket 22 does not move, keeping the pre-stacking compartment 24 with the defective inner bushing at a height that allows the inspected inner bushing to be transferred, and waiting for the next inspected inner bushing. When the next inner or outer bushing is inspected, the material transfer assembly 4 transfers the defective inner or outer bushing from the pre-stacking compartment 24 to the fitting mechanism 3. At this time, the inner bushing is transferred by the material transfer assembly 4 to the fitting plate 32, and the outer bushing is transferred by the material transfer assembly 4 to the fitting stage 31. At the same time, the material transfer assembly 4 also moves the inspected inner or outer bushing into the pre-stacking compartment 24. The material transfer component 4 transfers the unqualified inner bushing to the selection plate 32 and lifts it to the height of the selection stage 31, or transfers the unqualified outer bushing to the selection stage 31. At this time, the selection drive component 331 drives the selection moving plate 332 to move towards the selection hole 311 to push the unqualified outer bushing or inner bushing into the defective channel 34.

[0043] If, during the inspection process, there is an outer bushing that passes inspection and matches the size of an inner bushing in a certain pre-stacking compartment 24, the material transfer component 4 moves the pre-stacking compartment 24 of the matched inner or outer bushing to a height where the inspected inner or outer bushing can be transferred. At the same time, the material transfer component 4 transfers the previous inner or outer bushing from the pre-stacking compartment 24 to the matching mechanism 3, and moves the currently inspected inner or outer bushing to an empty pre-stacking compartment 24. Meanwhile, the next inner or outer bushing is moved to the inspection mechanism for inspection. The optional drive unit 331 drives the optional moving plate 332 to move above the defective channel 34 in advance. At this time, the material transfer assembly 4 transfers the outer bushing to the optional stage 31. The optional plate 32 is driven to rise so that the inner bushing passes through the optional hole 311 and is embedded in the outer bushing located on the optional stage 31. The clearance cylinder 334 is activated to lower the clearance plate 335 to be flush with the optional moving plate 332. At this time, the optional drive unit 331 is activated to control the optional moving plate 332 and the clearance plate 335 to move simultaneously to the end away from the optional hole 311. At this time, the clearance plate 335 first pushes away the assembled inner bushing and outer bushing located at the detection point 312. At the same time, the optional moving plate 332 pushes the assembled inner bushing and outer bushing located at the optional hole 311 to the detection point 312.

[0044] The pre-stacking mechanism 2 is used to achieve matching assembly of inner and outer bushings of different sizes, thereby improving the compatibility of the ball groove size between the inner and outer bushings.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bearing assembly apparatus, characterized by: The system includes a frame (1), on both sides of which are pre-stacking mechanisms (2), which are used to store inner and outer bushings that have been inspected and tested; a matching mechanism (3) is provided between the two pre-stacking mechanisms (2) on the frame (1), which is used to select and assemble inner and outer bushings that have been inspected and tested and are sized to match; a material transfer component (4) is also provided at the pre-stacking mechanism (2), which is used to transfer the inner or outer bushing at the pre-stacking mechanism (2) to the matching mechanism (3).

2. A bearing assembly apparatus as claimed in claim 1, wherein: The pre-stacking mechanism (2) includes a pre-stacking drive (21), a pre-stacking mounting frame (22), and a plurality of pre-stacking plates (23). The pre-stacking drive (21) is mounted on the frame (1). The pre-stacking mounting frame (22) is mounted on the pre-stacking drive (21) and is vertically arranged. The plurality of pre-stacking plates (23) are evenly arranged on the pre-stacking mounting frame (22) in the vertical direction. A pre-stacking grid (24) is formed between adjacent pre-stacking plates (23). The inner or outer bushing that has been tested is transferred to the pre-stacking grid (24).

3. A bearing assembly apparatus according to claim 2, wherein: The selection mechanism (3) includes a selection platform (31), a selection plate (32), and a selection transmission assembly (33). The selection platform (31) is mounted on the rack (1). One end of the selection platform (31) is located between two pre-stacked mounting frames (22), and the other end extends away from the pre-stacked mounting frames (22). A selection hole (311) is provided at the end of the selection platform (31) near the pre-stacked mounting frame (22). The diameter of the selection hole (311) is large. The outer diameter of the inner bushing is smaller than that of the outer bushing; the fitting plate (32) is movably mounted on the fitting table (31) directly below the fitting hole (311), and the fitting plate (32) is driven to rise to insert the inner bushing through the fitting hole (311) into the outer bushing located on the fitting table (31); the fitting transfer assembly (33) is mounted on the fitting table (31) to transfer the successfully inserted inner bushing and outer bushing to the end away from the fitting hole (311).

4. A bearing assembly apparatus according to claim 3, wherein: The fitting mechanism (3) also includes a defective channel (34), which is installed on one end of the fitting table (31) near the fitting hole (311) and extends toward the ground; the fitting transmission assembly (33) can transmit inner or outer bushings with unqualified test dimensions to the defective channel (34) for sliding along the defective channel (34).

5. A bearing assembly apparatus as claimed in claim 4, wherein: The optional transmission component (33) includes an optional drive (331), an optional moving plate (332), and an optional connecting rod (333). The optional drive (331) is mounted on the optional platform (31) via a bracket. The optional moving plate (332) is mounted on the optional drive (331) via the optional connecting rod (333). The optional moving plate (332) is parallel to the optional platform (31). The optional drive (331) drives the optional moving plate (332) to move along the length direction of the optional platform (31).

6. A bearing assembly device according to claim 5, characterized in that: The end of the fitting platform (31) away from the fitting hole (311) is also provided with a detection point (312). The fitting drive (331) can drive the fitting moving plate (332) to move along the length of the fitting platform (31) to transfer the successfully fitted inner bushing and outer bushing to the assembly detection point (312). The fitting transfer assembly (33) also includes a clearance cylinder (334) and a clearance plate (335). The clearance cylinder (334) is mounted on the fitting drive (331). The piston rod of the positioning cylinder (334) is connected to the relief plate (335), which is located at the end of the optional moving plate (332) away from the optional hole (311). The distance between the highest point of the relief plate (335) and the optional stage (31) is greater than the height of the outer bushing. The relief plate (335) and the optional moving plate (332) move synchronously to push the inner bushing and outer bushing, which have been successfully inserted and inspected at the assembly inspection point (312), away from the optional hole (311).

7. A bearing assembly device according to claim 5, characterized in that: There is a protective gap (336) between the optional movable plate (332) and the optional platform (31), and the width of the protective gap (336) is less than the height of the outer bushing.

8. A bearing assembly device according to claim 2, characterized in that: The pre-stacked drive unit (21) can be a lead screw structure.

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