Bearing mounting tool

Abstract

A bearing installation tool, comprising a frame, a first driving part fixed to the frame, a guide part and a positioning part slidingly fitted to the guide part, the positioning part being in transmission connection with an output end of the first driving part; a positioning member being arranged on a side of the positioning part away from the first driving part; the frame further being connected with a bearing clamping device, the bearing clamping device being arranged on the side of the positioning part away from the first driving part; the bearing clamping device being provided with a bearing accommodating space; the center lines of the guide part, the positioning member and the accommodating space all coinciding with a central axis of the positioning part. By using the bearing installation tool in the application, the coaxiality deviation of the bearing and the shaft after installation can be reduced.

Description

Technical Field

[0001] This application relates to the field of bearing assembly technology, and more specifically, to a bearing installation fixture. Background Technology

[0002] Heated bearing assembly is a common process in industrial equipment maintenance. Heating the bearing expands its inner ring, making it easier to quickly fit onto the journal for an interference fit. Traditional assembly methods rely on operators wearing gloves and holding the heated bearing directly. Manual assembly depends on experience and is prone to coaxiality deviations, leading to uneven fit between the bearing and the journal. Utility Model Content

[0003] The purpose of this invention is to provide a bearing installation fixture that can reduce the coaxiality deviation between the bearing and the shaft after installation.

[0004] To achieve the above objectives, this utility model provides a bearing installation fixture, including a frame, a first driving part fixed to the frame, a guide part, and a positioning part slidably adapted to the guide part. The positioning part is drively connected to the output end of the first driving part. A positioning element is provided on the side of the positioning part away from the first driving part. The frame is also connected to a bearing clamping device, which is located on the side of the positioning part away from the first driving part. The bearing clamping device is provided with a receiving space for accommodating the bearing. The center lines of the guide part, the positioning element, and the receiving space all coincide with the central axis of the positioning part.

[0005] By employing the bearing mounting fixture of this application, a heated bearing can be fixed to the bearing clamping device, at which point the heated bearing and the positioning part are coaxially arranged. Driven by the first drive unit, the positioning part passes through the inner ring of the bearing to the outer side of the frame. After the positioning element at the end of the positioning part is positioned and engaged with the positioning element of the shaft to be installed, the end of the positioning part abuts axially against the end face of the shaft to be installed. The positioning element of the shaft to be installed is coaxially arranged with the shaft to be installed, at which point the shaft to be installed and the positioning part are coaxially arranged. Then, the first drive unit drives the positioning part to move in the reverse direction, and the operator always maintains the positioning part abutting axially against the shaft to be installed. Thus, during the reverse movement of the first drive unit, the shaft to be installed, guided by the positioning part, gradually passes through the inner ring of the bearing from the outer side of the frame, thereby completing the installation of the bearing and the shaft to be installed. This reduces the coaxiality deviation of the bearing and shaft after installation, ensuring the coaxiality of the bearing and the shaft to be installed.

[0006] Optionally, a receiving groove is provided on the side of the positioning part away from the first driving part, and the central axis of the positioning part passes through the center line of the receiving groove. A second driving part is provided in the receiving groove, and the output end of the second driving part is connected to the positioning member to drive the positioning member to move along the center line of the receiving groove in the extension direction or the retraction direction. The positioning member can move along the center line of the receiving groove in the extension direction and the retraction direction, thereby dynamically adjusting the distance between the end of the positioning member away from the receiving groove and the shaft end face of the positioning part. This allows it to adapt to different depths of the positioning groove for different shafts to be installed, and always keeps the end face of the shaft to be installed and the end face of the positioning part axially abutting each other.

[0007] Optionally, the guide portion is fitted onto the outside of the positioning portion and fixedly connected to the frame.

[0008] Optionally, the bearing clamping device includes a first clamping arm and a second clamping arm arranged radially opposite to each other along the positioning part, with a receiving space located between the first clamping arm and the second clamping arm. By using two clamping arms to clamp and fix the bearing, it is possible to adapt to bearings with different radial dimensions, thereby improving the adaptability of the bearing installation fixture.

[0009] Optionally, the first clamping arm is driven to the output end of the third drive unit, and the second clamping arm is driven to the output end of the fourth drive unit. Under the drive of the third and fourth drive units, the first and second clamping arms can move toward each other or toward each other. The third and fourth drive units apply a driving force extending radially along the positioning part to the corresponding clamping arms, and the third and fourth drive units can move synchronously, thereby always maintaining the coaxiality of the accommodating space and the positioning part.

[0010] Optionally, the third and fourth drive units are electrically operated telescopic poles.

[0011] Optionally, the ends of the first and second clamping arms that are close to each other form an arc transition. This allows them to fit snugly against the outer ring of the heated bearing, thus providing better fixation and clamping of the bearing and preventing the bearing from shifting position during frame movement.

[0012] Optionally, the positioning element is a conical structure. This allows for radial alignment of the shaft to be installed, thereby ensuring the coaxiality of the shaft to be installed and the positioning part.

[0013] Optionally, the frame includes two crossbeams radially opposite to each other along the positioning part, and a longitudinal beam connected between the crossbeams; the first drive part is fixed at the midpoint of the longitudinal beam.

[0014] The outer side of the guide section is connected to two connecting beams, which are fixed to the crossbeams on the corresponding sides.

[0015] Optionally, the first drive unit is an electric telescopic rod.

[0016] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0018] Figure 1 This is a schematic diagram of the bearing mounting fixture in the embodiments of this application;

[0019] Figure 2 for Figure 1 A partial cross-sectional view;

[0020] Figure 3 for Figure 2 A magnified schematic diagram of the local structure of region A in the middle.

[0021] Figure label:

[0022] 1-Frame; 11-Crossbeam; 12-Longitudinal beam; 2-Guide part; 3-Positioning part; 31-Positioning component; 32-Receiving groove; 4-Bearing clamping device; 40-Receiving space; 41-First clamping arm; 42-Second clamping arm; 51-First driving part; 52-Second driving part; 53-Third driving part; 54-Fourth driving part. Detailed Implementation

[0023] To achieve the above objectives, this utility model provides a bearing mounting fixture, such as... Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the bearing mounting fixture in the embodiments of this application; Figure 2 for Figure 1 A partial cross-sectional view; Figure 3 for Figure 2 A magnified schematic diagram of the local structure of region A in the middle.

[0024] The bearing mounting fixture includes a frame 1, a first drive part 51 fixed to the frame 1, a guide part 2, and a positioning part 3 that is slidably adapted to the guide part 2. The positioning part 3 is connected to the output end of the first drive part 51. A positioning element 31 is provided on the side of the positioning part 3 away from the first drive part 51.

[0025] The frame 1 is also connected to a bearing clamping device 4, which is located on the side of the positioning part 3 away from the first drive part 51; the bearing clamping device 4 is provided with a receiving space 40 for accommodating the bearing.

[0026] The center lines of the guide part 2, the positioning element 31, and the receiving space 40 all coincide with the central axis of the positioning part 3.

[0027] See Figure 1 and Figure 2 The frame 1 is used for the operator to hold, thereby avoiding direct contact with the heated bearing and reducing operational risks. The frame 1 can be made of a high-temperature resistant material such as metal. The frame 1 is fixed with a first drive unit 51 and a guide unit 2, the guide unit 2 being adapted to guide the positioning unit 3. The first drive unit 51 drives the positioning unit 3 to move forward and backward along the extension direction of the guide unit 2. The positioning unit 3 is also provided with a positioning element 31, which is adapted to a positioning element 31 located on the end face of the shaft to be installed. The positioning elements 31 are inserted into each other.

[0028] The frame 1 is also fixed with a bearing clamping device 4, which is used to clamp the heated outer ring of the bearing. A guide portion 2 is located between the bearing clamping device 4 and the first drive portion 51. The bearing clamping device 4 also has a receiving space 40 for accommodating the bearing. One end of the positioning portion 3, which is provided with a positioning member 31, can move axially from the side of the receiving space 40 near the first drive portion 51 to the side of the receiving space 40 away from the first drive portion 51, that is, it can pass through the receiving space 40 from the inside of the frame 1 to the outside of the frame 1. The guide portion 2, the positioning portion 3, the positioning member 31, and the receiving space 40 are all coaxially arranged.

[0029] In actual operation, the heated bearing is fixed to the bearing clamping device 4, at which point the heated bearing and the positioning part 3 are coaxially arranged. Driven by the first drive part 51, the positioning part 3 passes through the inner ring of the bearing to the outer side of the frame 1. After the positioning member 31 at the end of the positioning part 3 is positioned and engaged with the positioning member 31 of the shaft to be installed, the end of the positioning part 3 abuts axially against the end face of the shaft to be installed. The positioning member 31 of the shaft to be installed is coaxially arranged with the shaft to be installed, at which point the shaft to be installed and the positioning part 3 are coaxially arranged.

[0030] Then, the first drive unit 51 drives the positioning unit 3 to move in the reverse direction, and the operator always keeps the positioning unit 3 in axial contact with the shaft to be installed. In this way, during the reverse movement of the first drive unit 51, the shaft to be installed is guided by the positioning unit 3 to gradually pass through the inner ring of the bearing from the outside of the frame 1, thereby completing the installation of the bearing and the shaft to be installed.

[0031] This method can reduce the coaxiality deviation between the bearing and the shaft after installation, ensuring the installation accuracy of the bearing and the shaft to be installed.

[0032] In some embodiments, a receiving groove 32 is provided on the side of the positioning part 3 away from the first driving part 51, and the central axis of the positioning part 3 passes through the center line of the receiving groove 32. Thus, the receiving groove 32 and the positioning part 3 are coaxially arranged. A second driving part 52 is provided in the receiving groove 32, and the output end of the second driving part 52 is connected to the positioning member 31 to drive the positioning member 31 to move along the center line of the receiving groove 32 in the extension direction or the retraction direction.

[0033] A recessed positioning groove is provided on the end face of the shaft to be installed, which serves as the aforementioned positioning element 31. The positioning element 31 can be inserted into the positioning groove and abuts against the positioning groove in both the axial and radial directions. This ensures the coaxiality of the positioning element 31 and the positioning groove.

[0034] The positioning member 31 can move along the center line of the receiving groove 32 in the extension and retraction directions, thereby dynamically adjusting the distance between the end of the positioning member 31 away from the receiving groove 32 and the shaft end face of the positioning part 3, and thus adapting to different depths of the positioning groove of different shafts to be installed, and always keeping the end face of the shaft to be installed and the end face of the positioning part 3 abutting axially.

[0035] See Figure 3 The positioning element 31 has a conical structure. Using a conical structure for positioning can reduce the initial positioning accuracy of the positioning part 3 and the shaft to be installed. At the same time, as the conical positioning element 31 is gradually inserted into the positioning groove which also has a conical structure, the shaft to be installed can be corrected radially under the action of the conical surface, thereby ensuring the coaxiality of the shaft to be installed and the positioning part 3.

[0036] In some embodiments, the guide portion 2 is sleeved on the outside of the positioning portion 3 and fixedly connected to the frame 1. The guide portion 2 can be made of metal or other materials. The guide portion 2 has a tubular structure, and its inner wall can be processed with a lubricating coating to reduce friction with the positioning portion 3.

[0037] In some embodiments, the bearing clamping device 4 includes a first clamping arm 41 and a second clamping arm 42 arranged radially opposite to each other along the positioning portion 3, and a receiving space 40 is located between the first clamping arm 41 and the second clamping arm 42. By using two clamping arms to clamp and fix the bearing, it is possible to adapt to bearings with different radial dimensions and improve the adaptability of the bearing installation fixture.

[0038] See Figure 1 and Figure 2The first clamping arm 41 is driven to the output end of the third drive unit 53, and the second clamping arm 42 is driven to the output end of the fourth drive unit 54. Under the drive of the third drive unit 53 and the fourth drive unit 54, the first clamping arm 41 and the second clamping arm 42 can move toward each other or toward each other. The third drive unit 53 and the fourth drive unit 54 apply a driving force extending radially along the positioning part 3 to the corresponding clamping arms, and the third drive unit 53 and the fourth drive unit 54 can move synchronously, thereby always maintaining the coaxiality of the receiving space 40 and the positioning part 3.

[0039] The third drive unit 53 and the fourth drive unit 54 are electrically operated telescopic rods. The electrically operated telescopic rods facilitate the operation of the third drive unit 53 and the fourth drive unit 54, and also reduce the weight and cost of the bearing installation fixture.

[0040] In other embodiments, the ends of the first clamping arm 41 and the second clamping arm 42 that are close to each other are arc-shaped, which allows them to fit against the outer ring of the heated bearing, thereby providing better fixation and clamping of the bearing and preventing the bearing from shifting position during the movement of the frame 1.

[0041] In some other embodiments, see Figure 1 and Figure 2 The specific structure of the bearing mounting fixture is described in detail. The frame 1 includes two crossbeams 11 radially opposite to each other along the positioning part 3, and a longitudinal beam 12 connected between the crossbeams 11. The first drive part 51 is fixed at the midpoint of the longitudinal beam 12. Two connecting beams are connected to the outer side of the guide part 2, and the connecting beams are fixed to the crossbeams 11 on the corresponding sides.

[0042] The two crossbeams 11 and the longitudinal beam 12 can be manufactured by welding. The two connecting beams are then welded to the corresponding sides of the crossbeams 11, with a certain gap between them and the longitudinal beam 12. The fixed end of the first drive unit 51 is fixed to the midpoint of the longitudinal beam 12, and the central axis of the guide unit 2 also passes through the midpoint of the longitudinal beam 12. The output end of the first drive unit 51 is fixed to the positioning unit 3, keeping the central axis of the positioning unit 3 aligned with the central axis of the guide unit 2. The first drive unit 51 is an electrically operated telescopic rod. The third drive unit 53 and the fourth drive unit 54 are welded to the ends of the corresponding sides of the crossbeams 11 furthest from the longitudinal beam 12. By adopting this structure, the stability of the frame 1 can be improved, while also ensuring the coaxiality of the guide unit 2, the positioning unit 3, and the accommodating space 40.

[0043] In some embodiments, the bearing mounting fixture further includes a control device, wherein the first drive unit 51, the second drive unit 52, the third drive unit 53 and the fourth drive unit 54 are respectively electrically connected to the control device.

[0044] The advantages of this application are:

[0045] First, the heated bearing can be fixed to the bearing clamping device 4, at which point the heated bearing and the positioning part 3 are coaxially arranged. Driven by the first drive unit 51, the positioning part 3 passes through the inner ring of the bearing to the outer side of the frame 1. After the positioning member 31 at the end of the positioning part 3 is positioned and engaged with the positioning member 31 of the shaft to be installed, the end of the positioning part 3 abuts axially against the end face of the shaft to be installed. The positioning member 31 of the shaft to be installed is coaxially arranged with the shaft to be installed, at which point the shaft to be installed and the positioning part 3 are coaxially arranged. Then, the first drive unit 51 drives the positioning part 3 to move in the opposite direction, and the operator always keeps the positioning part 3 abutting axially against the shaft to be installed. Thus, during the reverse movement of the first drive unit 51, the shaft to be installed, guided by the positioning part 3, gradually passes through the inner ring of the bearing from the outer side of the frame 1, thereby completing the installation of the bearing and the shaft to be installed. This method reduces the coaxiality deviation after the bearing and shaft are installed, ensuring the installation accuracy of the bearing and the shaft to be installed.

[0046] Secondly, the positioning member 31 can move along the center line of the receiving groove 32 in the extension direction and the retraction direction, thereby dynamically adjusting the distance between the end of the positioning member 31 away from the receiving groove 32 and the shaft end face of the positioning part 3, and thus adapting to the different depths of the positioning groove of different shafts to be installed, and always keeping the end face of the shaft to be installed and the end face of the positioning part 3 abutting axially.

[0047] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above description of the implementation methods is only for the purpose of helping to understand the core idea of ​​this utility model. It should be noted that relational terms such as "first" and "second" are only used to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0048] The foregoing embodiments are merely illustrative. Those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the scope of the claims. Furthermore, those skilled in the art can combine the embodiments in part or in whole, and all technical solutions derived from such combinations fall within the scope of this patent.

Claims

1. A bearing mounting fixture, characterized in that, It includes a frame (1), a first drive unit (51) fixed to the frame (1), a guide unit (2), and a positioning unit (3) slidably adapted to the guide unit (2). The positioning unit (3) is connected to the output end of the first drive unit (51). A positioning element (31) is provided on the side of the positioning unit (3) away from the first drive unit (51). The frame (1) is also connected to a bearing clamping device (4), which is located on the side of the positioning part (3) away from the first driving part (51); the bearing clamping device (4) is provided with a receiving space (40) for accommodating the bearing. The center lines of the guide part (2), the positioning member (31), and the receiving space (40) all coincide with the central axis of the positioning part (3).

2. The bearing mounting tool of claim 1, wherein, A receiving groove (32) is provided on the side of the positioning part (3) away from the first driving part (51), and the central axis of the positioning part (3) passes through the center line of the receiving groove (32); A second driving unit (52) is provided in the receiving groove (32). The output end of the second driving unit (52) is connected to the positioning member (31) to drive the positioning member (31) to move along the center line of the receiving groove (32) in the extension direction or the retraction direction.

3. The bearing mounting tool of claim 1, wherein, The guide part (2) is sleeved on the outside of the positioning part (3) and fixedly connected to the frame (1).

4. The bearing mounting tool of claim 1, wherein, The bearing clamping device (4) includes a first clamping arm (41) and a second clamping arm (42) arranged radially opposite to each other along the positioning part (3), and the accommodating space (40) is located between the first clamping arm (41) and the second clamping arm (42).

5. The bearing mounting tool of claim 4, wherein, The first clamping arm (41) is driven to the output end of the third drive unit (53), and the second clamping arm (42) is driven to the output end of the fourth drive unit (54). Under the drive of the third drive unit (53) and the fourth drive unit (54), the first clamping arm (41) and the second clamping arm (42) can move toward each other or toward each other.

6. The bearing mounting tool of claim 5, wherein, The third drive unit (53) and the fourth drive unit (54) are electric telescopic rods.

7. The bearing mounting tool of claim 4, wherein, The ends of the first clamping arm (41) and the second clamping arm (42) that are close to each other are curved.

8. The bearing mounting tool of any one of claims 1-7, wherein, The positioning element (31) has a conical structure.

9. The bearing mounting tool of any one of claims 1-7, wherein, The frame (1) includes two crossbeams (11) radially opposite to each other along the positioning part (3) and a longitudinal beam (12) connected between the crossbeams (11); the first driving part (51) is fixed at the midpoint of the longitudinal beam (12); the outer side of the guide part (2) is connected to two connecting beams, which are fixed to the crossbeams (11) on the corresponding side.

10. The bearing mounting tool of any one of claims 1-7, wherein, The first drive unit (51) is an electric telescopic rod.

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