Tool for mounting shaft sleeve on large shaft

Abstract

The invention discloses a tool for installing a shaft sleeve on a large shaft, and belongs to the technical field of mechanical assembly, and the key points of the technical scheme are that the tool comprises a base, the base comprises a bottom plate and a supporting frame, the supporting frame is connected with the bottom plate, and the supporting frame is used for placing the shaft sleeve; the limiting plate is connected with the supporting frame and used for limiting the shaft sleeve; the positioning device comprises a plurality of positioning rods and a plurality of sleeves installed on a large shaft, the positioning rods are vertically arranged, all the positioning rods are connected with the bottom plate and distributed around the supporting frame, the positioning rods penetrate through the sleeves, and the inner diameter of each sleeve is matched with the outer diameter of the corresponding positioning rod; and the multiple bearing blocks are connected with the bottom plate, distributed around the supporting frame and used for bearing the large shaft, and the effects that the precision and efficiency of installing the shaft sleeve on the large shaft are improved, and the manual operation intensity is reduced are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical assembly, and in particular to a tool for installing a shaft sleeve on a large shaft. Background Art

[0002] With the development of modern industry, the demand for large-scale mechanical equipment is increasing, especially those heavy equipment that require high precision and high reliability. In the assembly process involving large-scale mechanical equipment, ensuring the precise installation of parts is crucial to the performance of the entire equipment. One of the core components of these equipment is the large shaft, which usually needs to form a tight interference fit with the sleeve to ensure the smoothness and efficiency of operation. However, in the traditional installation process, due to the large size of the large shaft and the sleeve, the contact of the mating surface is uneven, resulting in problems such as difficulty in assembly and low efficiency, which not only increases production costs, but also limits the improvement of production efficiency. Summary of the invention

[0003] In order to improve the accuracy and efficiency of installing a shaft sleeve on a large shaft and reduce the intensity of manual operation, the present invention provides a tool for installing a shaft sleeve on a large shaft.

[0004] The present invention provides a tool for installing a shaft sleeve on a large shaft, which adopts the following technical solution: A tool for installing a shaft sleeve on a large shaft, comprising a base, the base comprising a bottom plate and a support frame, the support frame is connected to the bottom plate, and the support frame is used to place the shaft sleeve; A limiting plate, connected to the support frame and used to limit the position of the shaft sleeve; A positioning device, comprising a plurality of positioning rods and a plurality of sleeves mounted on the main shaft, wherein the positioning rods are vertically arranged, the plurality of positioning rods are connected to the bottom plate and distributed around the support frame, the positioning rods pass through the sleeves, and the inner diameter of the sleeves matches the outer diameter of the positioning rods; A plurality of bearing blocks are provided, and the plurality of bearing blocks are connected to the base plate and distributed around the support frame for bearing the large shaft.

[0005] By adopting the above technical solution, the sleeve is first cooled and shrunk, and then placed on the support frame and accurately positioned by the limit plate. Then the heated and expanded large sleeve is placed on the already shrunk sleeve to achieve an interference fit between the large shaft and the sleeve, and the large shaft is accurately positioned for installation through the positioning device. The tooling realizes accurate positioning and stable support of the large shaft and the sleeve through the combined design of the base, support frame, limit plate, positioning device and bearing block, and solves the problems of difficult assembly and low efficiency caused by large size in the traditional installation process. Specifically: the design of the base enables the tooling to have a stable support structure to ensure the stability of the sleeve during installation. The limit plate cooperates with the support frame to accurately limit the sleeve in the axial and radial directions, realize accurate positioning of the sleeve, and thus reduce the possibility of offset during installation. The positioning device realizes accurate positioning of the large shaft through the cooperation of multiple positioning rods and sleeves, thereby ensuring that the sleeve can be accurately installed to the specified position. The setting of multiple load-bearing blocks can not only evenly disperse the weight of the large shaft and reduce deformation caused by excessive local force, but also further improve the overall stability of the tooling.

[0006] Preferably, the limiting plate is arranged on the inner side of the shaft sleeve, the limiting plate comprises a plurality of limiting parts, the diameter of the limiting parts of the limiting plate matches the inner diameter of the shaft sleeve, and the limiting parts are chamfered.

[0007] By adopting the above technical solution, the stopper effectively prevents the sleeve from shifting during installation, ensuring that the sleeve is accurately aligned with the main shaft. The chamfer design has a guiding effect, facilitating the placement and precise positioning of the sleeve. At the same time, it reduces the friction between the sleeve and the stopper, reduces the risk of damage, and improves assembly efficiency and quality.

[0008] Preferably, the base plate is connected to a limit device for limiting the position of the sleeve in the vertical direction, and the limit device includes a mounting block, a pull rod, a connecting rod, a reinforcement rod and a mounting frame. The mounting block is connected to the base plate, the pull rod passes through the mounting block and the support frame, and the pull rod is slidably connected to the mounting block; the connecting rod is arranged on the inner side of the sleeve, one end of the connecting rod is fixedly connected to the pull rod, and the other end is connected to the reinforcement rod, the mounting frame is connected to the support frame, the reinforcement rod passes through the mounting frame and is slidably connected to the mounting frame, and the reinforcement rod extends out of the mounting frame and abuts against the top of the sleeve to limit the position of the sleeve.

[0009] By adopting the above technical solution, the tooling can effectively limit the sleeve in the vertical direction, ensuring that the sleeve will not move in the vertical direction during the installation process, thereby improving the installation accuracy and stability. Specifically, the design of the limit device allows the pull rod to adjust its position by sliding, and the connecting rod and the reinforcement rod move in coordination, so that the reinforcement rod extends out of the mounting frame and overlaps the top surface of the sleeve, ultimately achieving effective limit on the top of the sleeve, further enhancing the limit effect, and reducing the possibility of loosening or displacement of the sleeve during installation.

[0010] Preferably, the pull rod is connected with a handle.

[0011] By adopting the above technical solution, the pull rod is connected with a handle, so that the operator can pull the pull rod more conveniently, thereby achieving effective limiting of the top of the sleeve, thereby improving the operating convenience and work efficiency of the tooling.

[0012] Preferably, the lengths of the plurality of positioning rods are different.

[0013] By adopting the above technical solution, when hoisting the main shaft, the sleeve on the main shaft is put on the positioning rod, the main shaft is slowly lowered, and the position of the main shaft is adjusted in sequence from high to low according to the positioning rods until all the positioning rods are inserted into the sleeves, thereby achieving accurate positioning of the main shaft installation, simple operation, and high positioning efficiency.

[0014] Preferably, a guide portion is provided at the top end of the positioning rod, and the diameter of the guide portion gradually decreases from the bottom end to the top end.

[0015] By adopting the above technical solution, the design of the guide part makes it easier to insert the positioning rod into the sleeve, thereby improving the assembly efficiency of the tooling. The diameter of the guide part gradually decreases from the bottom to the top, which helps to reduce the friction between the positioning rod and the sleeve, further ensuring that the positioning rod enters the sleeve smoothly, thereby ensuring the accurate positioning of the large shaft and the sleeve.

[0016] Preferably, a positioning portion with an outer diameter larger than the diameter of the through hole of the large shaft flange is provided at the bottom end of the sleeve, and the sleeve is connected to the large shaft through a fixing device, and the fixing device includes a first clamping plate, a second clamping plate and an adjusting assembly, the first clamping plate abuts against the top of the large shaft flange, the first clamping plate is provided with a first clamping groove, the sleeve is clamped in the first clamping groove, the second clamping plate abuts against the bottom end of the positioning portion, the second clamping plate is provided with a second clamping groove, and the second clamping groove can allow the positioning rod to pass through and extend into the sleeve, one end of the adjusting assembly is connected to the first clamping plate, and the other end is connected to the second clamping plate, so as to fix the sleeve to the large shaft.

[0017] By adopting the above technical solution, the sleeve is directly inserted into the through hole of the main shaft flange during installation. The positioning part design at the bottom of the sleeve limits the installation of the sleeve, and the ingenious design of the fixing device realizes a stable connection between the sleeve and the main shaft. Specifically, the first clamping plate abuts against the top of the main shaft flange, and the sleeve is clamped by the first clamping groove, which ensures the fixed position of the sleeve and improves the accuracy and stability of the tooling. The second clamping plate drags the sleeve, and the design of the second clamping groove does not affect the insertion of the positioning rod into the sleeve. The adjustment assembly connects the first clamping plate and the second clamping plate, so that the positions of the first clamping plate and the second clamping plate are relatively fixed. The close cooperation of the first clamping plate and the second clamping plate realizes the firm fixation of the sleeve, which is easy and reliable to operate and improves the overall performance of the tooling.

[0018] Preferably, the adjustment assembly includes a first adjustment plate, a second adjustment plate and an adjustment bolt, the first adjustment plate is connected to the first clamping plate, the second adjustment plate is connected to the second clamping plate, the first adjustment plate and the second adjustment plate are staggered, the first adjustment plate is connected to an adjustment nut, the second adjustment plate is provided with a sliding hole, the adjustment bolt passes through the sliding hole and is threadedly connected to the first adjustment plate and the adjustment nut, so as to adjust the position of the first adjustment plate and the second adjustment plate, and the adjustment bolt is used to fix the first adjustment plate and the second adjustment plate when it abuts against the second adjustment plate.

[0019] By adopting the above technical solution, the sliding connection structure between the first adjustment plate and the second adjustment plate enables the adjustment assembly to be fixed at different positions, thereby adapting to large shaft flanges of different sizes, thereby improving the scope of application and flexibility of the tooling. At the same time, the threaded connection between the adjustment bolt, the first adjustment plate and the adjustment nut ensures the stability and reliability of the adjustment assembly, effectively preventing loosening caused by vibration and other reasons during use, and ensuring the safety and stability of the tooling.

[0020] Preferably, a protection pad is provided between the support frame and the shaft sleeve, and the protection pad is connected to the support frame and abuts against the shaft sleeve.

[0021] By adopting the above technical solution, the provision of the protection pad can effectively reduce the rigid contact between the support frame and the sleeve, and reduce the possibility of wear or scratches on the sleeve surface due to direct contact, thereby improving the service life and assembly quality of the sleeve.

[0022] In summary, the present invention has the following beneficial effects: First, the sleeve is cooled and shrunk, and then placed on the support frame and accurately positioned by the limit plate. Then the heated and expanded large sleeve is placed on the already shrunk sleeve to achieve an interference fit between the large shaft and the sleeve, and the large shaft is accurately positioned for installation through the positioning device. The tooling realizes accurate positioning and stable support of the large shaft and the sleeve through the combined design of the base, support frame, limit plate, positioning device and bearing block, and solves the problems of difficult assembly and low efficiency caused by large size in the traditional installation process. Specifically: the design of the base enables the tooling to have a stable support structure to ensure the stability of the sleeve during installation. The limit plate cooperates with the support frame to accurately limit the sleeve in the axial and radial directions, realizes accurate positioning of the sleeve, and thus reduces the possibility of offset during installation. The positioning device realizes accurate positioning of the large shaft through the cooperation of multiple positioning rods and sleeves, thereby ensuring that the sleeve can be accurately installed to the specified position. The setting of multiple bearing blocks can not only evenly disperse the weight of the large shaft, reduce deformation caused by excessive local force, but also further improve the overall stability of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a schematic diagram of the overall structure of a tooling for installing a sleeve on a large shaft.

[0024] Figure 2 This is a diagram showing the state of the sleeve being placed on the support frame.

[0025] Figure 3 This is a diagram showing the state where the fixture is installed on the main shaft.

[0026] Figure 4 It is a schematic diagram of the position of the limit plate.

[0027] Figure 5 It is a top view of a tool used for installing a sleeve on a large shaft.

[0028] Figure 6 yes Figure 5 Cross-sectional view cut along the AA direction.

[0029] Figure 7 It is a front view of a tool used for installing a sleeve on a large shaft.

[0030] Figure 8 It is a schematic diagram of the structure of the fixing device.

[0031] Description of reference numerals: 1. Base; 11. Bottom plate; 12. Support frame; 2. Limiting plate; 21. Limiting part; 3. Protection pad; 4. Limiting device; 41. Mounting block; 42. Pull rod; 421. Handle; 43. Connecting rod; 44. Reinforcement rod; 45. Mounting frame; 5. Positioning device; 51. Positioning rod; 52. Sleeve; 521. Positioning part; 6. Carrying block; 7. Fixing device; 71. First clamping plate; 711. First slot; 72. Second clamping plate; 721. Second slot; 73. Adjusting assembly; 731. First adjusting plate; 732. Second adjusting plate; 7321. Slide hole; 733. Adjusting bolt; 8. First baffle plate; 9. Second baffle plate. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0033] A tool for installing a sleeve on a large shaft, refer to Figure 1 , Figure 2 and Figure 3 , including a base 1, a limiting plate 2, a positioning device 5 and a bearing block 6. The base 1 includes a bottom plate 11 and a support frame 12, the support frame 12 is connected to the bottom plate 11, and the support frame 12 is used to place the shaft sleeve. The limiting plate 2 is connected to the support frame 12 and is used to limit the shaft sleeve. The positioning device 5 includes a plurality of positioning rods 51 and a plurality of sleeves 52 installed on the main shaft, the positioning rods 51 are vertically arranged, the plurality of positioning rods 51 are all connected to the bottom plate 11 and distributed around the support frame 12, the positioning rods 51 pass through the sleeves 52, and the inner diameter of the sleeves 52 matches the outer diameter of the positioning rods 51. A plurality of bearing blocks 6 are provided, the plurality of bearing blocks 6 are all connected to the bottom plate 11 and distributed around the support frame 12, and are used to carry the main shaft.

[0034] When in use, the sleeve is first cooled and shrunk, and then placed on the support frame 12, and accurately positioned by the limit plate 2. The heated and expanded large sleeve is then placed on the already shrunk sleeve to achieve interference fit between the large shaft and the sleeve, and the large shaft is accurately positioned for installation by the positioning device 5. The tooling realizes accurate positioning and stable support of the large shaft and the sleeve through the combined design of the base 1, the support frame 12, the limit plate 2, the positioning device 5 and the bearing block 6, and solves the problems of difficult assembly and low efficiency caused by large size in the traditional installation process.

[0035] Reference Figure 2 and Figure 4 The bottom plate 11 is placed horizontally, and the support frame 12 is arranged on the top of the bottom plate 11 and is hollow. A protection pad 3 is fixedly connected to the top of the support frame 12, and the protection pad 3 is arranged around the limit plate 2. The shaft sleeve abuts against the protection pad 3, reducing the possibility of wear or scratches on the surface of the shaft sleeve due to direct contact, thereby improving the service life and assembly quality of the shaft sleeve.

[0036] Reference Figure 2 , Figure 5 and Figure 6 The limiting plate 2 is arranged inside the sleeve, and the top of the limiting plate 2 is higher than the top of the protection pad 3. The limiting plate 2 is provided with a plurality of limiting portions 21, and the diameter of the limiting portion 21 of the limiting plate 2 matches the inner diameter of the sleeve. The limiting portion 21 is chamfered. In this embodiment, three limiting portions 21 are provided, and the three limiting portions 21 are evenly distributed along the circumference of the limiting plate 2.

[0037] The stopper 21 effectively prevents the sleeve from shifting during installation, ensuring that the sleeve is accurately aligned with the shaft. The chamfer design has a guiding effect, facilitating the placement and precise positioning of the sleeve, while reducing the friction between the sleeve and the stopper 21, reducing the risk of damage, and improving assembly efficiency and quality.

[0038] Reference Figure 5 and Figure 6 The bottom plate 11 is connected to the limiting device 4, and the limiting device 4 is provided with three groups, and the three groups of limiting devices 4 are evenly distributed around the circumference of the sleeve. And the limiting device 4 and the positioning device 5 are staggered.

[0039] Reference Figure 6 The limiting device 4 includes a mounting block 41, a pull rod 42, a connecting rod 43, a reinforcing rod 44 and a mounting frame 45. A plurality of mounting blocks 41 are provided, and all are fixedly connected to the bottom plate 11. The pull rod 42 is arranged horizontally, and the first end of the pull rod 42 passes through the mounting block 41 and is slidably connected to the mounting block 41. The first end of the pull rod 42 extends into the interior of the support frame 12. The second end of the pull rod 42 is fixedly connected to a handle 421.

[0040] Reference Figure 6 The connecting rod 43 is vertically arranged inside the support frame 12. The bottom end of the connecting rod 43 is fixedly connected to the pull rod 42, and the top end is fixedly connected to the reinforcing rod 44. The reinforcing rod 44 is arranged horizontally, and the reinforcing rod 44 and the pull rod 42 are located on the same vertical plane. The mounting frame 45 is fixedly connected to the top of the limit plate 2, and the reinforcing rod 44 passes through the mounting frame 45 and is slidably connected to the mounting frame 45. The bottom of the reinforcing rod 44 matches the top of the sleeve. When the pull rod 42 is pulled out to the end away from the connecting rod 43, the reinforcing rod 44 extends out and overlaps with the top surface of the sleeve.

[0041] The tooling can effectively limit the shaft sleeve in the vertical direction, ensuring that the shaft sleeve will not move in the vertical direction during installation, thereby improving installation accuracy and stability.

[0042] Reference Figure 7 In the present embodiment, three positioning rods 51 are vertically arranged, and the three positioning rods 51 are spaced apart around the support frame 12 , and the height of each positioning rod 51 is different.

[0043] When hoisting the main shaft, the sleeve 52 on the main shaft is sleeved on the positioning rod 51, and the main shaft is slowly lowered. The position of the main shaft is adjusted in sequence from high to low according to the positioning rods 51 until all the positioning rods 51 are inserted into the sleeve 52, so as to achieve accurate positioning of the main shaft installation, simple operation, and high positioning efficiency.

[0044] Reference Figure 7 A guide portion is provided at the top end of the positioning rod 51, and the diameter of the guide portion gradually decreases from the bottom end to the top end.

[0045] The design of the guide portion makes it easier for the positioning rod 51 to be inserted into the sleeve 52, thereby improving the assembly efficiency of the tooling.

[0046] Reference Figure 3 and Figure 5 In this embodiment, six bearing blocks 6 are provided, and every two bearing blocks 6 are provided as a group. Three groups of bearing blocks 6 correspond to three positioning rods 51 one by one, and two bearing blocks 6 in the same group are respectively provided around the corresponding positioning rods 51.

[0047] The provision of multiple bearing blocks 6 can not only evenly disperse the weight of the large shaft and reduce deformation caused by excessive local force, but also further improve the overall stability of the tooling.

[0048] Reference Figure 1 , Figure 3 and Figure 8 In this embodiment, three sleeves 52 are provided, and the three sleeves 52 correspond to the three positioning rods 51. The sleeve 52 vertically passes through the through hole of the large shaft flange, and a positioning portion 521 is provided at the bottom of the sleeve 52. The outer diameter of the positioning portion 521 is larger than the diameter of the through hole of the large shaft flange, and the positioning portion 521 abuts against the bottom of the large shaft.

[0049] When installing, the sleeve 52 is directly inserted into the through hole of the large shaft flange, and the positioning portion 521 at the bottom end of the sleeve 52 is designed to limit the installation of the sleeve 52.

[0050] Reference Figure 3 and Figure 8 Each sleeve 52 is connected to a fixing device 7. The fixing device 7 includes a first clamping plate 71, a second clamping plate 72 and an adjustment assembly 73. The first clamping plate 71 and the second clamping plate 72 are both arranged horizontally, and the first clamping plate 71 and the second clamping plate 72 are respectively arranged above and below the flange of the large shaft.

[0051] Reference Figure 3 and Figure 8, the first clamping plate 71 abuts against the top surface of the main shaft flange. The first clamping plate 71 is provided with a first clamping groove 711, the top of the sleeve 52 protrudes from the main shaft flange, and the sleeve 52 is clamped in the first clamping groove 711. Both sides of the sleeve 52 are provided with first baffles 8, the first baffles 8 are vertically arranged and fixedly connected to the first clamping plate 71, and the first baffles 8 abut against the sleeve 52.

[0052] The first clamping plate 71 is in contact with the top of the flange of the large shaft, and the sleeve 52 is clamped by the first clamping groove 711, thereby ensuring that the position of the sleeve 52 is fixed, thereby improving the accuracy and stability of the tooling.

[0053] Reference Figure 3 and Figure 8 , the second clamping plate 72 abuts against the bottom surface of the positioning portion 521. The second clamping plate 72 is provided with a second clamping groove 721, which is communicated with the inside of the sleeve 52, and the cross-sectional area of ​​the second clamping groove 721 is larger than the diameter of the sleeve 52, and the positioning rod 51 can be inserted into the sleeve 52. Second baffles 9 are provided on both sides of the positioning portion 521, and the second baffles 9 are vertically arranged and fixedly connected to the second clamping plate 72, and the second baffles 9 abut against the positioning portion 521.

[0054] The second clamping plate 72 can hold the sleeve 52 , and the design of the second clamping groove 721 does not affect the insertion of the positioning rod 51 into the sleeve 52 .

[0055] Reference Figure 3 and Figure 8 The adjustment assembly 73 includes a first adjustment plate 731, a second adjustment plate 732 and an adjustment bolt 733. The first adjustment plate 731 and the second adjustment plate 732 are both vertically arranged and are both arranged on the side of the main shaft flange. The first adjustment plate 731 is fixedly connected to the first clamping plate 71, and the second adjustment plate 732 is fixedly connected to the second clamping plate 72. The first adjustment plate 731 and the second adjustment plate 732 are staggered, and the first adjustment plate 731 and the second adjustment plate 732 are slidably abutted.

[0056] Reference Figure 3 and Figure 8 The first adjustment plate 731 is located on the side of the second adjustment plate 732 close to the main shaft. An adjustment nut is fixedly connected to the side wall of the first adjustment plate 731 close to the main shaft. The second adjustment plate 732 is provided with a sliding hole 7321, and the length direction of the sliding hole 7321 is vertically arranged. The adjustment bolt 733 passes through the sliding hole 7321 and the first adjustment plate 731, and the adjustment bolt 733 is threadedly connected to the first adjustment plate 731 and the adjustment nut. When the adjustment bolt 733 abuts against the second adjustment plate 732, the first adjustment plate 731 and the second adjustment plate 732 are fixed.

[0057] The adjustment assembly 73 connects the first clamping plate 71 and the second clamping plate 72, so that the first clamping plate 71 and the second clamping plate 72 are relatively fixed or slide, so as to adapt to large shaft flanges of different sizes, thereby improving the application range and flexibility of the tooling. At the same time, the operation is simple and reliable, and the overall performance of the tooling is improved.

[0058] Reference Figure 8 The sliding hole 7321, the adjusting bolt 733 and the adjusting nut constitute a fixing group, and two fixing groups are provided and are arranged at intervals in the horizontal direction.

[0059] The application principle of the present invention is as follows: when in use, the sleeve is first cooled and shrunk, and then placed on the protective pad 3 of the support frame 12, and the sleeve is accurately positioned by the limiting portion 21 of the limiting plate 2. Then the pull rod 42 is pulled, and the pull rod 42 drives the connecting rod 43 and the reinforcing rod 44 to move, so that the reinforcing rod 44 overlaps the top surface of the sleeve, so that the reinforcing rod 44 has an auxiliary limiting effect on the sleeve.

[0060] A heating element is provided on the main shaft to heat and expand the main shaft. Install the sleeve 52 at a suitable position on the main shaft, and use the fixing device 7 to adjust the position of the fixed sleeve 52. Lift the main shaft with the heating element so that the sleeve 52 corresponds to the positioning rod 51, slowly lower the main shaft, and insert the positioning rods 51 into the sleeve 52 in order from high to low heights to achieve precise positioning of the main shaft. After all the positioning rods 51 are inserted into the sleeve 52, lower the main shaft until the main shaft abuts against multiple bearing blocks 6, and the main shaft is placed in place. Wait for the interference fit between the main shaft and the sleeve to be completed, and the coaxiality error is less than 0.05mm.

[0061] The tooling realizes precise positioning and stable support of the large shaft and the shaft sleeve through the combined design of the base 1, the support frame 12, the limit plate 2, the positioning device 5 and the bearing block 6, and solves the problems of difficult assembly and low efficiency caused by the large size in the traditional installation process.

[0062] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for installing a sleeve on a large shaft, characterized in that: The invention comprises a base (1), wherein the base (1) comprises a bottom plate (11) and a support frame (12), wherein the support frame (12) is connected to the bottom plate (11), and the support frame (12) is used for placing a shaft sleeve; A limiting plate (2), connected to the support frame (12) and used for limiting the position of the shaft sleeve; A positioning device (5), comprising a plurality of positioning rods (51) and a plurality of sleeves (52) mounted on the main shaft, wherein the positioning rods (51) are arranged vertically, the plurality of positioning rods (51) are connected to the base plate (11) and are distributed around the support frame (12), the positioning rods (51) pass through the sleeves (52), and the inner diameter of the sleeves (52) matches the outer diameter of the positioning rods (51); A plurality of bearing blocks (6) are provided, and the plurality of bearing blocks (6) are all connected to the base plate (11) and distributed around the support frame (12) for bearing the large shaft.

2. A tool for installing a sleeve on a large shaft according to claim 1, characterized in that: The limiting plate (2) is arranged on the inner side of the shaft sleeve, the limiting plate (2) comprises a plurality of limiting portions (21), the diameter of the limiting portions (21) of the limiting plate (2) matches the inner diameter of the shaft sleeve, and the limiting portions (21) are chamfered.

3. The tooling for installing a sleeve on a large shaft according to claim 1, characterized in that: The bottom plate (11) is connected to a limiting device (4) for limiting the position of the shaft sleeve in the vertical direction, and the limiting device (4) comprises a mounting block (41), a pull rod (42), a connecting rod (43), a reinforcing rod (44) and a mounting frame (45). The mounting block (41) is connected to the bottom plate (11), the pull rod (42) passes through the mounting block (41) and the support frame (12), and the pull rod (42) is slidably connected to the mounting block (41); The connecting rod (43) is arranged on the inner side of the sleeve, one end of the connecting rod (43) is fixedly connected to the pull rod (42), and the other end is connected to the reinforcing rod (44), the mounting frame (45) is connected to the support frame (12), the reinforcing rod (44) passes through the mounting frame (45) and is slidably connected to the mounting frame (45), and when the reinforcing rod (44) extends out of the mounting frame (45) and overlaps with the top of the sleeve, it can limit the position of the sleeve.

4. A tool for installing a sleeve on a large shaft according to claim 3, characterized in that: The pull rod (42) is connected to a handle (421).

5. The tooling for installing a sleeve on a large shaft according to claim 1, characterized in that: The lengths of the plurality of positioning rods (51) are different.

6. A tool for installing a sleeve on a large shaft according to claim 1 or 5, characterized in that: A guide portion is provided at the top end of the positioning rod (51), and the diameter of the guide portion gradually decreases from the bottom end to the top end.

7. The tooling for installing a sleeve on a large shaft according to claim 1, characterized in that: The sleeve (52) has a positioning portion (521) at its bottom end, the outer diameter of which is larger than the diameter of the through hole of the flange of the large shaft. The sleeve (52) is connected to the large shaft via a fixing device (7). The fixing device (7) comprises a first clamping plate (71), a second clamping plate (72) and an adjusting assembly (73). The first clamping plate (71) abuts against the top of the flange of the large shaft. The first clamping plate (71) is provided with a first clamping groove (711). The sleeve (52) is clamped in the first clamping groove (711). The second clamping plate (72) abuts against the bottom end of the positioning portion (521). The second clamping plate (72) is provided with a second clamping groove (721). The second clamping groove (721) allows the positioning rod (51) to pass through and extend into the sleeve (52). One end of the adjusting assembly (73) is connected to the first clamping plate (71) and the other end is connected to the second clamping plate (72) to achieve the fixing of the sleeve (52) and the large shaft.

8. The tooling for installing a sleeve on a large shaft according to claim 7, characterized in that: The adjusting assembly (73) comprises a first adjusting plate (731), a second adjusting plate (732) and an adjusting bolt (733); the first adjusting plate (731) is connected to the first clamping plate (71); the second adjusting plate (732) is connected to the second clamping plate (72); the first adjusting plate (731) and the second adjusting plate (732) are staggered; the first adjusting plate (731) is connected to an adjusting nut; a sliding hole (7321) is provided on the second adjusting plate (732); the adjusting bolt (733) passes through the sliding hole (7321) and is threadedly connected to the first adjusting plate (731) and the adjusting nut, so as to be able to adjust the position of the first adjusting plate (731) and the second adjusting plate (732); when the adjusting bolt (733) abuts against the second adjusting plate (732), it is used to fix the first adjusting plate (731) and the second adjusting plate (732).

9. The tooling for installing a sleeve on a large shaft according to claim 1, characterized in that: A protection pad (3) is provided between the support frame (12) and the shaft sleeve, and the protection pad (3) is connected to the support frame (12) and abuts against the shaft sleeve.

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