A mounting device for reducing the deformation of a bushing during cold shrink assembly

Abstract

The application discloses a mounting device for reducing cold shrink assembly deformation of a bushing, and belongs to the technical field of assembly, characterized by comprising a bushing adaptation adjusting part, a bushing positioning part and a base hole adaptation adjusting part. The bushing adaptation adjusting part comprises an upper limiting adjusting shaft, an upper limiting cover and a dismounting button. The dismounting button is installed in the internal cavity of the upper limiting adjusting shaft. The upper limiting adjusting shaft penetrates through the upper limiting cover and is in clearance fit with the upper limiting cover. The upper limiting adjusting cone is connected with the upper limiting adjusting shaft through the dismounting button. The bushing anti-deformation support is connected with the upper positioning base through a first compression spring. The base hole adaptation adjusting part comprises a lower positioning base, a lower base hole support and a lower limiting adjusting cone. The lower positioning base and the lower base hole support are connected through a second compression spring. The application can improve the coaxiality of the bushing and the base during the bushing mounting process and reduce the inner diameter shrinkage after the cold shrink assembly of the bushing, thereby effectively improving the assembly precision.

Description

Technical Field

[0001] This invention relates to the field of component assembly technology, and in particular to an installation device for reducing assembly deformation due to cold shrinkage of bushings. Background Technology

[0002] A bushing is a ring that acts as a gasket, generally used on the outside of mechanical parts to achieve sealing and wear protection. The use of bushings reduces equipment wear, vibration, and noise, and also provides corrosion protection. In the aerospace manufacturing industry, bushings are generally assembled using cold-shrink fitting. This utilizes the property of thermal expansion and contraction of materials; the internal parts are cooled to -80°C or lower using a low-temperature medium, causing the material to shrink before assembly. They are often installed in the base hole using an interference fit.

[0003] During bushing installation, its coaxiality with the bearing hole will significantly affect the assembly quality of the bushing. At the same time, after installation, due to the cold shrinkage of the bushing, the inner wall of the bushing will undergo inward shrinkage deformation as the temperature returns to room temperature. When the interference fit between the bushing and the base hole is 0.05mm, the inner diameter of the lower end of the bushing will shrink by 0.05845mm, resulting in a decrease in the accuracy of the bushing's inner diameter hole position.

[0004] Currently, bushing installation mainly adopts the following method: a coaxial stepped mandrel is used as a guide tool for bushing installation. The diameter of one end of the mandrel is slightly smaller than the diameter of the bearing hole by 1-2 mm, and the diameter of the other end of the mandrel is slightly smaller than the inner diameter of the bushing by 1-2 mm. Through clearance fit, the bushing is guided to fit with the bearing hole. This method can basically meet the assembly requirements for bushings with low precision requirements. However, for high precision bushings, the existence of the fit clearance has a significant impact on the coaxiality of the bushing and the bearing hole. At the same time, the currently disclosed bushing auxiliary installation devices do not take into account the impact of bushing cold shrinkage deformation on the bushing hole position accuracy. As a result, after the bushing is assembled by cold shrinkage, it usually needs to be subjected to supplementary boring to eliminate the impact of cold shrinkage deformation of the bushing inner diameter hole.

[0005] Chinese patent document with publication number CN206084314U and publication date of April 12, 2017 discloses a tooling for fitting a copper bushing. The tooling is characterized by: a base, on which a column is provided for fitting into the copper bushing, a balance plate is slidably fitted onto the column, flexible support mechanisms are provided between the two sides of the balance plate and the base, and a limiting boss is provided on the column for limiting the downward movement distance of the balance plate.

[0006] The copper bushing assembly fixture disclosed in this patent document uses a column mounted on a base. During use, the copper bushing is placed on a balance plate and fitted onto the column. The lugs of the spring workpiece are aligned with the copper bushing, and then a punch press is used to directly press the copper bushing into the lugs. During assembly, the column, fitted inside the copper bushing, protects it and effectively prevents deformation due to compression. However, it is still not suitable for cold-shrink assembly and suffers from low assembly accuracy. Summary of the Invention

[0007] In order to overcome the defects of the prior art, the present invention provides an installation device for reducing the deformation of bushings during cold shrinkage assembly. The present invention can improve the coaxiality of the bushing with the base during the installation process and reduce the inner diameter shrinkage of the bushing after cold shrinkage assembly, thereby effectively improving the assembly accuracy.

[0008] This invention is achieved through the following technical solution:

[0009] An installation device for reducing bushing cold shrinkage assembly deformation, characterized in that it includes a bushing adapter adjustment component, a bushing positioning component, and a base hole adapter adjustment component. The bushing positioning component is located between the bushing adapter adjustment component and the base hole adapter adjustment component. The bushing adapter adjustment component includes an upper limit adjustment shaft, an upper limit cover, and a disassembly / removal button. The disassembly / removal button is installed in the internal cavity of the upper limit adjustment shaft, which passes through the upper limit cover and has a clearance fit with it. The bushing positioning component includes an upper limit adjustment cone, a bushing anti-deformation support, and an upper positioning base. The upper limit adjustment cone is connected to the upper limit adjustment shaft via the disassembly / removal button, and one end of the upper limit adjustment cone is connected to the upper positioning base. The base is connected by a thread, and the other end of the upper limit adjustment cone is engaged with the bushing anti-deformation support through a conical surface. The upper positioning base has a first inner cavity, and a first compression spring is installed in the first inner cavity. The bushing anti-deformation support and the upper positioning base are connected by the first compression spring. The base hole adapter adjustment component includes a lower positioning base, a lower base hole support, and a lower limit adjustment cone. The lower positioning base has a second inner cavity, and a second compression spring is installed in the second inner cavity. The lower positioning base and the lower base hole support are connected by the second compression spring. One end of the lower limit adjustment cone is connected to the lower positioning base by a thread, and the other end of the lower limit adjustment cone is engaged with the lower base hole support through a conical surface.

[0010] The upper limit adjusting cone includes a frustum section and a hollow cylindrical section, which are integrally formed. The outer wall of the hollow cylindrical section has external threads.

[0011] The bushing anti-deformation support includes a support section and a connecting section, which are integrally formed. The connecting section has a first frustum hole that matches the size of the frustum section of the upper limit adjustment cone.

[0012] The lower limit adjusting cone includes a tapered part and a threaded part, which are integrally formed.

[0013] The lower base hole support includes a support frame and a support base, which are integrally formed. The support base has a second frustum hole that matches the size of the conical part of the lower limit adjustment cone.

[0014] The central axis of the frustum section of the upper limit adjusting cone coincides with the central axis of the conical part of the lower limit adjusting cone.

[0015] The hollow cylindrical section of the upper limit adjustment cone has a blind hole that forms a transition fit with the disassembly button.

[0016] There are two compression springs, one for the first compression spring and one for the second compression spring.

[0017] The beneficial effects of this invention are mainly reflected in the following aspects:

[0018] 1. Compared with the prior art, the present invention can improve the coaxiality between the bushing and the base during the installation process and reduce the inner diameter shrinkage after the bushing is cold-shrinked and assembled, thereby effectively improving the assembly accuracy.

[0019] 2. This invention is used to assist in the assembly of bushings. By using the base hole adapter adjustment component, a tight fit between the bushing and the bushing mounting base hole is achieved. At the same time, the fit between the tapered surfaces is used to achieve centering between the bushing and the bushing mounting base hole, significantly improving the coaxiality during the bushing installation process.

[0020] 3. In this invention, the organic cooperation of the bushing adapter adjustment component, the bushing positioning component, and the base hole adapter adjustment component, along with the function of the compression spring, can adjust the position in the radial direction of the support, thereby adapting to the cold shrink assembly process of bushings of different diameters and improving applicability.

[0021] 4. After installation, the bushing anti-deformation support can be left on the inner diameter wall of the bushing by using the disassembly button. This reduces the inner diameter shrinkage caused by cold shrinkage assembly, thereby reducing the need for additional boring operations after bushing installation and improving the overall installation efficiency of the bushing. Attached Figure Description

[0022] The present invention will now be further described in detail with reference to the accompanying drawings and specific embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 A schematic diagram showing the installation of the bushing into the base hole for the base hole adapter adjustment component;

[0025] Figure 3A schematic diagram of bushing positioning components being installed in a bushing;

[0026] Figure 4 A schematic diagram of the bushing being pressed into the bushing mounting base hole;

[0027] The markings in the diagram are: 1. Upper limit adjustment shaft, 2. Upper limit cover, 3. Disassembly / removal button, 4. Upper limit adjustment cone, 5. Bushing anti-deformation support, 6. Upper positioning base, 7. First inner cavity, 8. First compression spring, 9. Lower positioning base, 10. Lower base hole support, 11. Lower limit adjustment cone, 12. Second inner cavity, 13. Second compression spring, 14. Frustum section, 15. Hollow cylindrical section, 16. Support section, 17. Connecting section, 18. Conical part, 19. Threaded part, 20. Support frame, 21. Support seat, 22. Bushing, 23. Bushing mounting base hole. Detailed Implementation

[0028] Example 1

[0029] See Figure 1 An installation device for reducing cold shrinkage and assembly deformation of bushings includes a bushing adapter adjustment component, a bushing positioning component, and a base hole adapter adjustment component. The bushing positioning component is located between the bushing adapter adjustment component and the base hole adapter adjustment component. The bushing adapter adjustment component includes an upper limit adjustment shaft 1, an upper limit cover 2, and a disassembly / assembly button 3. The disassembly / assembly button 3 is installed in the internal cavity of the upper limit adjustment shaft 1. The upper limit adjustment shaft 1 passes through the upper limit cover 2 and has a clearance fit with the upper limit cover 2. The bushing positioning component includes an upper limit adjustment cone 4, a bushing anti-deformation support 5, and an upper positioning base 6. The upper limit adjustment cone 4 is connected to the upper limit adjustment shaft 1 through the disassembly / assembly button 3. One end of the upper limit adjustment cone 4 is threadedly connected to the upper positioning base 6. The other end of the adjusting cone 4 is engaged with the bushing anti-deformation support 5 through a conical surface. The upper positioning base 6 has a first inner cavity 7, and a first compression spring 8 is provided in the first inner cavity 7. The bushing anti-deformation support 5 and the upper positioning base 6 are connected by the first compression spring 8. The base hole adapter adjustment component includes a lower positioning base 9, a lower base hole support 10 and a lower limit adjusting cone 11. The lower positioning base 9 has a second inner cavity 12, and a second compression spring 13 is provided in the second inner cavity 12. The lower positioning base 9 and the lower base hole support 10 are connected by the second compression spring 13. One end of the lower limit adjusting cone 11 is threaded to the lower positioning base 9, and the other end of the lower limit adjusting cone 11 is engaged with the lower base hole support 10 through a conical surface.

[0030] This embodiment is the most basic implementation method. Compared with the prior art, it can improve the coaxiality between the bushing and the base during the bushing installation process and reduce the inner diameter shrinkage after the bushing is cold-shrinked and assembled, thereby effectively improving the assembly accuracy.

[0031] Example 2

[0032] See Figure 1 and Figure 3 An installation device for reducing cold shrinkage and assembly deformation of bushings includes a bushing adapter adjustment component, a bushing positioning component, and a base hole adapter adjustment component. The bushing positioning component is located between the bushing adapter adjustment component and the base hole adapter adjustment component. The bushing adapter adjustment component includes an upper limit adjustment shaft 1, an upper limit cover 2, and a disassembly / assembly button 3. The disassembly / assembly button 3 is installed in the internal cavity of the upper limit adjustment shaft 1. The upper limit adjustment shaft 1 passes through the upper limit cover 2 and has a clearance fit with the upper limit cover 2. The bushing positioning component includes an upper limit adjustment cone 4, a bushing anti-deformation support 5, and an upper positioning base 6. The upper limit adjustment cone 4 is connected to the upper limit adjustment shaft 1 through the disassembly / assembly button 3. One end of the upper limit adjustment cone 4 is threadedly connected to the upper positioning base 6. The other end of the adjusting cone 4 is engaged with the bushing anti-deformation support 5 through a conical surface. The upper positioning base 6 has a first inner cavity 7, and a first compression spring 8 is provided in the first inner cavity 7. The bushing anti-deformation support 5 and the upper positioning base 6 are connected by the first compression spring 8. The base hole adapter adjustment component includes a lower positioning base 9, a lower base hole support 10 and a lower limit adjusting cone 11. The lower positioning base 9 has a second inner cavity 12, and a second compression spring 13 is provided in the second inner cavity 12. The lower positioning base 9 and the lower base hole support 10 are connected by the second compression spring 13. One end of the lower limit adjusting cone 11 is threaded to the lower positioning base 9, and the other end of the lower limit adjusting cone 11 is engaged with the lower base hole support 10 through a conical surface.

[0033] Preferably, the upper limit adjusting cone 4 includes a frustum section 14 and a hollow cylindrical section 15, which are integrally formed, and the outer wall of the hollow cylindrical section 15 has external threads.

[0034] The bushing anti-deformation support 5 includes a support section 16 and a connecting section 17, which are integrally formed. The connecting section 17 has a first frustum hole that matches the size of the frustum section 14 of the upper limit adjustment cone 4.

[0035] This embodiment is a preferred implementation method, used to assist in the bushing assembly process. By using the base hole adapter adjustment component, a tight fit between the bushing and the bushing mounting base hole is achieved. At the same time, the fit between the tapered surfaces is used to achieve centering between the bushing and the bushing mounting base hole, significantly improving the coaxiality during the bushing installation process.

[0036] Example 3

[0037] See Figures 1-3An installation device for reducing cold shrinkage and assembly deformation of bushings includes a bushing adapter adjustment component, a bushing positioning component, and a base hole adapter adjustment component. The bushing positioning component is located between the bushing adapter adjustment component and the base hole adapter adjustment component. The bushing adapter adjustment component includes an upper limit adjustment shaft 1, an upper limit cover 2, and a disassembly / assembly button 3. The disassembly / assembly button 3 is installed in the internal cavity of the upper limit adjustment shaft 1. The upper limit adjustment shaft 1 passes through the upper limit cover 2 and has a clearance fit with the upper limit cover 2. The bushing positioning component includes an upper limit adjustment cone 4, a bushing anti-deformation support 5, and an upper positioning base 6. The upper limit adjustment cone 4 is connected to the upper limit adjustment shaft 1 through the disassembly / assembly button 3. One end of the upper limit adjustment cone 4 is threadedly connected to the upper positioning base 6. The other end of the adjusting cone 4 is engaged with the bushing anti-deformation support 5 through a conical surface. The upper positioning base 6 has a first inner cavity 7, and a first compression spring 8 is provided in the first inner cavity 7. The bushing anti-deformation support 5 and the upper positioning base 6 are connected by the first compression spring 8. The base hole adapter adjustment component includes a lower positioning base 9, a lower base hole support 10 and a lower limit adjusting cone 11. The lower positioning base 9 has a second inner cavity 12, and a second compression spring 13 is provided in the second inner cavity 12. The lower positioning base 9 and the lower base hole support 10 are connected by the second compression spring 13. One end of the lower limit adjusting cone 11 is threaded to the lower positioning base 9, and the other end of the lower limit adjusting cone 11 is engaged with the lower base hole support 10 through a conical surface.

[0038] The upper limit adjusting cone 4 includes a frustum section 14 and a hollow cylindrical section 15, which are integrally formed. The outer wall of the hollow cylindrical section 15 has external threads.

[0039] The bushing anti-deformation support 5 includes a support section 16 and a connecting section 17, which are integrally formed. The connecting section 17 has a first frustum hole that matches the size of the frustum section 14 of the upper limit adjustment cone 4.

[0040] More preferably, the lower limit adjusting cone 11 includes a cone-shaped portion 18 and a threaded portion 19, which are integrally formed.

[0041] The lower base hole support 10 includes a support frame 20 and a support base 21, which are integrally formed. The support base 21 has a second frustum hole that matches the size of the cone-shaped part 18 of the lower limit adjustment cone 11.

[0042] This embodiment is another preferred implementation. The organic cooperation of the bushing adapter adjustment component, the bushing positioning component, and the base hole adapter adjustment component, as well as the function of the compression spring, can adjust the position in the radial direction of the support, thereby adapting to the cold shrink assembly process of bushings of different diameters and improving applicability.

[0043] Example 4

[0044] See Figures 1-4 An installation device for reducing cold shrinkage and assembly deformation of bushings includes a bushing adapter adjustment component, a bushing positioning component, and a base hole adapter adjustment component. The bushing positioning component is located between the bushing adapter adjustment component and the base hole adapter adjustment component. The bushing adapter adjustment component includes an upper limit adjustment shaft 1, an upper limit cover 2, and a disassembly / assembly button 3. The disassembly / assembly button 3 is installed in the internal cavity of the upper limit adjustment shaft 1. The upper limit adjustment shaft 1 passes through the upper limit cover 2 and has a clearance fit with the upper limit cover 2. The bushing positioning component includes an upper limit adjustment cone 4, a bushing anti-deformation support 5, and an upper positioning base 6. The upper limit adjustment cone 4 is connected to the upper limit adjustment shaft 1 through the disassembly / assembly button 3. One end of the upper limit adjustment cone 4 is threadedly connected to the upper positioning base 6. The other end of the adjusting cone 4 is engaged with the bushing anti-deformation support 5 through a conical surface. The upper positioning base 6 has a first inner cavity 7, and a first compression spring 8 is provided in the first inner cavity 7. The bushing anti-deformation support 5 and the upper positioning base 6 are connected by the first compression spring 8. The base hole adapter adjustment component includes a lower positioning base 9, a lower base hole support 10 and a lower limit adjusting cone 11. The lower positioning base 9 has a second inner cavity 12, and a second compression spring 13 is provided in the second inner cavity 12. The lower positioning base 9 and the lower base hole support 10 are connected by the second compression spring 13. One end of the lower limit adjusting cone 11 is threaded to the lower positioning base 9, and the other end of the lower limit adjusting cone 11 is engaged with the lower base hole support 10 through a conical surface.

[0045] The upper limit adjusting cone 4 includes a frustum section 14 and a hollow cylindrical section 15, which are integrally formed. The outer wall of the hollow cylindrical section 15 has external threads.

[0046] The bushing anti-deformation support 5 includes a support section 16 and a connecting section 17, which are integrally formed. The connecting section 17 has a first frustum hole that matches the size of the frustum section 14 of the upper limit adjustment cone 4.

[0047] The lower limit adjusting cone 11 includes a cone-shaped part 18 and a threaded part 19, which are integrally formed.

[0048] The lower base hole support 10 includes a support frame 20 and a support base 21, which are integrally formed. The support base 21 has a second frustum hole that matches the size of the cone-shaped part 18 of the lower limit adjustment cone 11.

[0049] More preferably, the central axis of the frustum section 14 of the upper limit adjusting cone 4 coincides with the central axis of the conical portion 18 of the lower limit adjusting cone 11.

[0050] The hollow cylindrical section 15 of the upper limit adjusting cone 4 has a blind hole that forms a transition fit with the disassembly button 3.

[0051] There are two compression springs, the first compression spring 8 and the second compression spring 13.

[0052] This embodiment is the best implementation method. After installation, by using the disassembly button 3, the bushing anti-deformation support 5 is left on the inner diameter wall of the bushing, reducing the inner diameter shrinkage caused by cold shrinkage assembly, thereby reducing the need for additional boring operations after bushing installation, and thus improving the installation efficiency of the entire bushing cycle.

[0053] The working principle of this invention is as follows:

[0054] Rotate the lower limit adjusting cone 11 to position the lower base hole support 10 at its minimum radius, insert the lower positioning base 9 into the bushing mounting base hole 23, and ensure that the lower positioning base 9 and the bushing mounting base hole are tightly fitted together through the positioning end face of the lower end of the lower positioning base 9; adjust the position of the lower limit adjusting cone 11, and the lower base hole support 10 is opened by the tapered part 18 of the lower limit adjusting cone 11, so that the base hole adapter adjustment component and the bushing mounting base hole 23 are fitted together, achieving the coaxial requirement between the base hole adapter adjustment component and the bushing mounting base hole 23; rotate the upper limit adjusting shaft 1 to position the bushing anti-deformation support 5 at its minimum position, insert the upper positioning base 6 into the inner diameter hole of the bushing to be installed, so that the upper limit cover 2 and the shoulder of the bushing 22 are tightly fitted together; adjust the position of the upper limit adjusting shaft 1, so that the bushing anti-deformation support 5 is opened by the frustum section 14 of the upper limit adjusting cone 4, and the bushing anti-deformation support 5... The bushing 22 is tightly fitted to the inner diameter wall surface; the concave conical surface of the upper positioning base 6 and the convex conical surface of the lower positioning base 9 are installed and matched to achieve the coaxiality requirement between the bushing 22 and the bushing mounting base hole 23; the upper positioning base 6 is pressed into the bushing mounting base hole 23, so that the base hole adapter adjustment component is removed from the bushing mounting base hole 23, and the bushing 22 to be installed is pressed into the bushing mounting base hole 23 along with the bushing positioning component; the disassembly and assembly button 3 protruding from the side through hole of the upper limit adjustment shaft 1 is pressed to remove the bushing adapter adjustment component, so that the bushing positioning component remains in the inner diameter wall surface of the bushing 22, and the bushing 22 is stationary. The amount of cold shrinkage deformation of the bushing 22 is reduced by the bushing anti-deformation support 5. Then, the upper limit adjustment shaft 1 is reconnected to the upper limit adjustment cone 4 by the disassembly and assembly button 3, the position of the upper limit adjustment shaft 1 is adjusted, the bushing anti-deformation support 5 is reset, and the bushing positioning component is removed to complete the installation of the bushing 22.

[0055] Under the same bushing assembly conditions, by adding bushing anti-deformation support 5 to the bushing inner diameter, the inner diameter shrinkage at the lower end of the bushing inner diameter is 0.03417mm. Compared with the bushing without bushing anti-deformation support 5, where the inner diameter shrinkage at the lower end of the bushing inner diameter is 0.05845mm, the inner diameter deformation is reduced by 41.53%.

Claims

1. An installation device for reducing assembly deformation due to cold shrinkage of bushings, characterized in that: The device includes a bushing adapter adjustment component, a bushing positioning component, and a base hole adapter adjustment component. The bushing positioning component is located between the bushing adapter adjustment component and the base hole adapter adjustment component. The bushing adapter adjustment component includes an upper limit adjustment shaft (1), an upper limit cover (2), and a disassembly / removal button (3). The disassembly / removal button (3) is installed in the internal cavity of the upper limit adjustment shaft (1). The upper limit adjustment shaft (1) passes through the upper limit cover (2) and is clearance-fitted with the upper limit cover (2). The bushing positioning component includes an upper limit adjustment cone (4), a bushing anti-deformation support (5), and an upper positioning base (6). The upper limit adjustment cone (4) is connected to the upper limit adjustment shaft (1) through the disassembly / removal button (3). One end of the upper limit adjustment cone (4) is threaded to the upper positioning base (6), and the other end of the upper limit adjustment cone (4) is threaded to the bushing anti-deformation support. The support (5) is connected by a conical surface. The upper positioning base (6) has a first inner cavity (7) and a first compression spring (8) is provided in the first inner cavity (7). The bushing anti-deformation support (5) and the upper positioning base (6) are connected by the first compression spring (8). The base hole adapter adjustment component includes a lower positioning base (9), a lower base hole support (10) and a lower limit adjustment cone (11). The lower positioning base (9) has a second inner cavity (12) and a second compression spring (13) is provided in the second inner cavity (12). The lower positioning base (9) and the lower base hole support (10) are connected by the second compression spring (13). One end of the lower limit adjustment cone (11) is connected to the lower positioning base (9) by a thread, and the other end of the lower limit adjustment cone (11) is connected to the lower base hole support (10) by a conical surface. Rotate the lower limit adjusting cone (11) to position the lower base hole support (10) at its minimum radius. Insert the lower positioning base (9) into the bushing mounting base hole (23). Through the positioning end face of the lower end of the lower positioning base (9), make the lower positioning base (9) and the bushing mounting base hole fit tightly together. Adjust the position of the lower limit adjusting cone (11). The lower base hole support (10) is opened by the tapered part (18) of the lower limit adjusting cone (11), so that the base hole fitting adjustment part and the bushing mounting base hole (23) fit together. The base hole adapter and the bushing mounting base hole (23) are fitted together to achieve coaxiality between them; the upper limit adjustment shaft (1) is rotated to make the bushing anti-deformation support (5) in the minimum position, and the upper positioning base (6) is inserted into the inner diameter hole of the bushing to be installed, so that the upper limit cover (2) and the bushing shoulder (22) are tightly fitted; the position of the upper limit adjustment shaft (1) is adjusted so that the bushing anti-deformation support (5) is opened by the frustum section (14) of the upper limit adjustment cone (4), and the bushing anti-deformation support (5) is opened. The inner diameter wall of the bushing (22) is tightly fitted; the concave conical surface of the upper positioning base (6) and the convex conical surface of the lower positioning base (9) are installed and matched to achieve the coaxiality requirement between the bushing (22) and the bushing mounting base hole (23); the upper positioning base (6) is pressed into the bushing mounting base hole (23) so that the base hole adaptation adjustment part is removed from the bushing mounting base hole (23), and the bushing (22) to be installed is pressed into the bushing mounting base hole (23) along with the bushing positioning part; the side of the upper limit adjustment shaft (1) is pressed down. Remove the bushing adapter adjustment component by extending the through hole (3), leaving the bushing positioning component in the inner diameter wall of the bushing (22), and install the bushing (22) statically. Reduce the amount of cold shrinkage deformation of the bushing (22) by using the bushing anti-deformation support (5). Then, use the removal button (3) to reconnect the upper limit adjustment shaft (1) with the upper limit adjustment cone (4), adjust the position of the upper limit adjustment shaft (1), reset the bushing anti-deformation support (5), and remove the bushing positioning component to complete the installation of the bushing (22).

2. The installation device for reducing bushing cold shrinkage assembly deformation according to claim 1, characterized in that: The upper limit adjustment cone (4) also includes a hollow cylindrical section (15). The frustum section (14) and the hollow cylindrical section (15) are integrally formed, and the outer wall of the hollow cylindrical section (15) has external threads.

3. The installation device for reducing bushing cold shrinkage assembly deformation according to claim 2, characterized in that: The bushing anti-deformation support (5) includes a support section (16) and a connecting section (17). The support section (16) and the connecting section (17) are integrally formed. The connecting section (17) has a first frustum hole that matches the size of the frustum section (14) of the upper limit adjustment cone (4).

4. The installation device for reducing bushing cold shrinkage assembly deformation according to claim 2, characterized in that: The lower limit adjusting cone (11) also includes a threaded part (19), and the cone part (18) and the threaded part (19) are integrally formed.

5. The installation device for reducing assembly deformation due to cold shrinkage of bushings according to claim 4, characterized in that: The lower base hole support (10) includes a support frame (20) and a support seat (21). The support frame (20) and the support seat (21) are integrally formed. The support seat (21) has a second frustum hole that matches the size of the cone-shaped part (18) of the lower limit adjustment cone (11).

6. The installation device for reducing assembly deformation due to cold shrinkage of bushings according to claim 4, characterized in that: The central axis of the frustum section (14) of the upper limit adjusting cone (4) coincides with the central axis of the cone section (18) of the lower limit adjusting cone (11).

7. The installation device for reducing assembly deformation due to cold shrinkage of bushings according to claim 2, characterized in that: The hollow cylindrical section (15) of the upper limit adjustment cone (4) has a blind hole that forms a transition fit with the disassembly button (3).

8. The mounting device for reducing assembly deformation due to cold shrinkage of bushings according to claim 1, characterized in that: The first compression spring (8) and the second compression spring (13) are both two.

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