Motor rotor shaft sleeve assembly device

Abstract

The present invention relates to the technical field of rotor sleeve assembly, and discloses a motor rotor sleeve assembly device, including a base plate, and also including: a turntable, the turntable is horizontally arranged above the base plate, and a driving assembly for driving the turntable to rotate is arranged on the top of the base plate; a heating positioning assembly, the heating positioning assembly is arranged on the turntable, and the heating positioning assembly is used to position the sleeve after heating; an L-shaped frame, the vertical side of the L-shaped frame is fixedly installed on the top of the base plate; a positioning press-fitting assembly, and the positioning press-fitting assembly is used to assemble the rotor and the sleeve. The present invention can monitor the temperature when heating the sleeve, and when the heating temperature reaches the specified value, the sleeve will be centered and the pressure plate will drive the rotor downward to realize the press-fitting of the rotor and the sleeve, avoiding the situation that the sleeve heating temperature is not enough, resulting in insufficient expansion of the sleeve hole, resulting in poor press-fitting effect of the rotor and the sleeve, thereby improving the use effect of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of rotor shaft sleeve assembly, and in particular to a motor rotor shaft sleeve assembly device. Background Art

[0002] The rotor and the sleeve are two common and important components in the motor. Most rotors are equipped with a sleeve to reduce vibration. The rotor is usually thin and the matching sleeve is also relatively small. Traditionally, the sleeve is pressed in manually. However, when the manufacturer installs it manually, accidents are prone to occur, which may cause damage to the sleeve. At the same time, manual operation takes a long time and is inconvenient, which reduces work efficiency.

[0003] For example, a motor rotor sleeve assembly device disclosed in announcement number CN221978750U can assemble the rotor and the sleeve, but it does not have the function of expanding the hole during assembly, which makes assembly difficult. Moreover, after assembly, it is not convenient to cut the pressed rotor and sleeve, which reduces the use effect. Therefore, it is urgent to design a motor rotor sleeve assembly device. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a motor rotor shaft sleeve assembly device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A motor rotor shaft sleeve assembly device includes a base plate and further includes:

[0007] The turntable is horizontally arranged above the base plate, and a driving assembly for driving the turntable to rotate is provided on the top of the base plate;

[0008] A heating and positioning assembly is provided on the turntable and is used to heat and position the sleeve;

[0009] L-shaped frame, the vertical side of the L-shaped frame is fixedly installed on the top of the base plate;

[0010] There are four conveyor belts, all of which are fixedly installed horizontally on the top of the base plate, and the four conveyor belts are symmetrically arranged in pairs, with a gap left between the corresponding two conveyor belts;

[0011] The positioning and pressing assembly is arranged on the L-shaped frame and is used to assemble the rotor and the shaft sleeve.

[0012] As a further technical solution of the present invention, the heating positioning assembly includes: a heating ring and a positioning mechanism. There are four heating rings, and each heating ring has a rectangular groove on its symmetrical side. The four heating rings are evenly fixed in a ring shape on the top of the turntable, and a first copper sheet is fixed on the top of the base plate. The first copper sheet and the four heating rings are electrically connected, and four second copper sheets evenly distributed in a ring shape are fixed to the bottom of the turntable. The four second copper sheets are electrically connected to the four heating rings respectively, and the first copper sheet slides with the four second copper sheets. There are four positioning mechanisms, and the four positioning mechanisms are evenly distributed in a ring shape on the top of the turntable.

[0013] As a further technical solution of the present invention, the positioning mechanism includes: a box body, the box body is fixedly installed on the top of the turntable, slides are slidably installed at both ends of the inside of the box body, and transverse grooves are opened at both ends of the side of the box body, and two symmetrically arranged L-shaped bars are provided on the side of the box body with the transverse grooves, the ends of the long sides of the two L-shaped bars pass through the two transverse grooves respectively, and the ends of the long sides of the two L-shaped bars are fixedly installed on the end faces of the two slides respectively, and the top ends of the short sides of the two L-shaped bars are fixedly installed with centering blocks that match the rectangular grooves.

[0014] As a further technical solution of the present invention, a slider is slidably installed inside the box, and movable rods are rotatably installed on the opposite sides of the slider. The other two ends of the two movable rods are rotatably installed on the opposite sides of the two slides. A second spring rod is fixedly installed horizontally on the inner wall of the box, and the fixed end and the telescopic end of the second spring rod are slidably connected by a spline, and the telescopic end of the second spring rod is fixedly installed on the side of the slider.

[0015] As a further technical solution of the present invention, a heat-conducting tube in contact with the heating ring is fixedly installed horizontally on the outside of the box body, and a piston disk is slidingly arranged inside the heat-conducting tube, mercury is arranged inside the heat-conducting tube, and a first spring rod is fixedly installed horizontally on the side of the piston disk away from the mercury, and the fixed end of the first spring rod passes through the heat-conducting tube and the side of the box body, the fixed end surface of the first spring rod is slidingly arranged on the inner wall of the side of the box body through a spline, the telescopic end of the first spring rod is fixedly installed on the side of the slider, and touch switches are fixed on the side of the piston disk and the inner end of the heat-conducting tube.

[0016] As a further technical solution of the present invention, two symmetrically arranged extension plates are fixed inside the box body, and third spring rods are horizontally fixedly installed on the opposite sides of the two extension plates. An L-shaped plate is fixedly installed on the telescopic end of each third spring rod, and the fixed end and the telescopic end of the third spring rod are slidably connected by a spline, and a first slope and a second slope are respectively provided at both ends of the L-shaped plate. A V-shaped plate is provided inside the box body, and the end of the V-shaped plate is fixedly sleeved on the fixed end surface of the first spring rod. A cross bar is horizontally fixedly installed on both oblique side surfaces of the V-shaped plate, and slides between the cross bar and the second slope.

[0017] As a further technical solution of the present invention, the positioning and pressing assembly includes: a support plate, there are two support plates, the two support plates are symmetrically arranged at the bottom of the horizontal side of the L-shaped frame, and the two support plates are located between the four conveyor belts, sliding between the two support plates and the four conveyor belts, a hydraulic telescopic rod is vertically installed on the top of the horizontal side of the L-shaped frame, two touch switches are electrically connected to the hydraulic telescopic rod, and a pressure plate is horizontally provided below the horizontal side of the L-shaped frame, and the output end of the hydraulic telescopic rod is fixedly installed on the top of the pressure plate.

[0018] As a further technical solution of the present invention, two symmetrically arranged fourth spring rods are vertically fixed on the top of each support plate, the fixed ends of the four fourth spring rods are fixedly installed on the bottom of the horizontal side of the L-shaped frame, and the telescopic end surfaces of the corresponding two fourth spring rods are sleeved with connecting plates, and two symmetrically arranged separation plates are vertically fixed on the bottom of each connecting plate.

[0019] As a further technical solution of the present invention, a splint is slidably provided on the top of each support plate, and a first telescopic rod is horizontally fixedly installed on the top of each support plate. The fixed end and the telescopic end of the first telescopic rod are slidably connected by a spline. The telescopic end of the first telescopic rod is fixedly installed on the side of the splint, and two symmetrically arranged limit plates are vertically fixed at the bottom of the horizontal side of the L-shaped frame. A Z-shaped groove is provided on the side of the limit plate, and a sliding column is slidably installed inside the Z-shaped groove. A horizontal plate is horizontally fixedly installed on the side of the splint, and the end of the sliding column is fixedly installed on the side of the horizontal plate.

[0020] As a further technical solution of the present invention, the driving assembly includes: a U-shaped frame, the two vertical sides of the U-shaped frame are fixedly installed on the top of the base plate, a driving motor is installed on the top of the base plate, a rotating shaft fixed to the bottom center of the turntable is rotatably installed on the top of the horizontal side of the U-shaped frame, and the output shaft of the driving motor is installed at the center of the end of the rotating shaft.

[0021] The beneficial effects of the present invention are:

[0022] First, the present invention, through the provision of a heating positioning assembly and a positioning and pressing assembly, can monitor the temperature when the sleeve is heated. When the heating temperature reaches a specified value, the sleeve is centered and the pressure plate drives the rotor downward to achieve press-fitting of the rotor and sleeve. This avoids the situation where the sleeve is not heated enough, resulting in insufficient expansion of the sleeve hole and poor press-fitting effect of the rotor and sleeve, thereby improving the use effect of the equipment.

[0023] Secondly, the present invention, through the arrangement of the heating positioning component and the positioning pressing component, can automatically cause the clamping plate to center the rotor when the rotor and the shaft sleeve are pressed together, and after the rotor and the shaft sleeve are pressed together, the tension generated by the fourth spring rod will also cause the pressed rotor and the shaft sleeve to move upward together, so as to realize the rapid blanking of the pressed rotor and the shaft sleeve, thereby improving the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a motor rotor shaft sleeve assembly device proposed by the present invention;

[0025] Figure 2 This is a bottom view structural diagram of a motor rotor sleeve assembly device proposed by the present invention;

[0026] Figure 3 This is a schematic cross-sectional view of a housing and a heat-conducting tube of a motor rotor shaft sleeve assembly device proposed by the present invention;

[0027] Figure 4 This is a schematic structural diagram of a motor rotor shaft sleeve assembly device proposed by the present invention with the heating ring removed;

[0028] Figure 5 for Figure 1 A magnified schematic diagram of part A;

[0029] Figure 6 This is a bottom view of the L-shaped frame structure of a motor rotor shaft sleeve assembly device proposed by the present invention;

[0030] Figure 7 This is a schematic structural diagram of a motor rotor shaft sleeve assembly device proposed by the present invention after removing the L-shaped frame;

[0031] Figure 8 for Figure 7 Schematic diagram of the enlarged portion B.

[0032] In the figure: 1. bottom plate; 2. turntable; 3. heating ring; 4. box; 5. conveyor belt; 6. L-shaped frame; 7. hydraulic telescopic rod; 8. drive motor; 9. U-shaped frame; 10. first copper sheet; 11. second copper sheet; 12. rectangular groove; 13. center block; 14. L-shaped bar; 15. horizontal groove; 16. touch switch; 17. first spring rod; 18. heat conducting tube; 19. slide plate; 20. movable rod; 21. slider; 22. second spring rod; 23. L-shaped plate; 24. first slope; 25. second slope; 26. third spring rod; 27. V-shaped plate; 28. horizontal bar; 29. ​​limit plate; 30. Z-shaped groove; 31. support plate; 32. splint; 33. first telescopic rod; 34. fourth spring rod; 35. connecting plate; 36. separation plate; 37. horizontal plate; 38. pressure plate; 39. sliding column. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Please see the attached Figure 1 -Attached Figure 8 , a motor rotor sleeve assembly device, including a base plate 1, and also includes: a turntable 2, a heating and positioning component, an L-shaped frame 6, a conveyor belt 5 and a positioning and pressing component. The turntable 2 is horizontally arranged above the base plate 1, and the top of the base plate 1 is provided with a driving component for driving the turntable 2 to rotate, the heating and positioning component is arranged on the turntable 2, and the heating and positioning component is used to position the sleeve after heating, the vertical side of the L-shaped frame 6 is fixedly installed on the top of the base plate 1, there are four conveyor belts 5, the four conveyor belts 5 are all horizontally fixedly installed on the top of the base plate 1, and the four conveyor belts 5 are symmetrically arranged in pairs, with a gap between the corresponding two conveyor belts 5, the positioning and pressing component is arranged on the L-shaped frame 6, and the positioning and pressing component is used to assemble the rotor and the sleeve;

[0036] As mentioned above, the rotors are placed on the conveyor belt 5 for continuous conveying of the rotors, and when the rotors are conveyed by the conveyor belt 5 to contact the support plate 31 , the rear rotor will push the front rotor to move, so that the rotors can pass over the support plate 31 for unloading.

[0037] Please see the attached Figure 1 -Attached Figure 2 In a preferred embodiment, the heating positioning assembly includes: a heating ring 3 and a positioning mechanism, there are four heating rings 3, and each heating ring 3 has a rectangular groove 12 on its symmetrical side. The four heating rings 3 are evenly fixed on the top of the turntable 2 in an annular shape, and a first copper sheet 10 is fixed on the top of the bottom plate 1. The first copper sheet 10 and the four heating rings 3 are electrically connected, and four second copper sheets 11 evenly distributed in an annular shape are fixed to the bottom of the turntable 2. The four second copper sheets 11 are electrically connected to the four heating rings 3 respectively, and the first copper sheet 10 and the four second copper sheets 11 slide between each other. There are four positioning mechanisms, and the four positioning mechanisms are evenly distributed in an annular shape on the top of the turntable 2;

[0038] Specifically, when the first copper sheet 10 and the second copper sheet 11 are in contact, the corresponding heating ring 3 will heat the sleeve to expand the sleeve.

[0039] Please see the attached Figure 1 -Attached Figure 8In a preferred embodiment, the positioning mechanism includes: a box body 4, the box body 4 is fixedly mounted on the top of the turntable 2, and slide plates 19 are slidably mounted at both ends of the box body 4, and transverse grooves 15 are opened at both ends of the side of the box body 4, and two symmetrically arranged L-shaped bars 14 are provided on the side of the box body 4 with the transverse grooves 15, and the ends of the long sides of the two L-shaped bars 14 pass through the two transverse grooves 15 respectively, and the ends of the long sides of the two L-shaped bars 14 are fixedly mounted on the end faces of the two slide plates 19 respectively, and the top ends of the short sides of the two L-shaped bars 14 are fixedly mounted with a rectangular groove 12 that is suitable for the rectangular groove 12. The center block 13 is equipped with a slider 21, and the opposite sides of the slider 21 are rotatably installed with movable rods 20. The other two ends of the two movable rods 20 are rotatably installed on the opposite sides of the two slides 19. The inner wall of the box 4 is fixedly installed with a second spring rod 22, and the fixed end and the telescopic end of the second spring rod 22 are connected by a spline sliding connection. The telescopic end of the second spring rod 22 is fixedly installed on the side of the slider 21. The outer side of the box 4 is fixedly installed with a heat-conducting tube 18 in contact with the heating ring 3, and the inside of the heat-conducting tube 18 is fixedly installed with a heat-conducting tube 18. A piston disc is provided for sliding, and mercury is provided inside the heat-conducting cylinder 18. A first spring rod 17 is fixedly installed horizontally on the side of the piston disc away from the mercury, and the fixed end of the first spring rod 17 passes through the heat-conducting cylinder 18 and the side of the box body 4. The fixed end surface of the first spring rod 17 is slidingly provided in the inner wall of the side of the box body 4 through a spline. The telescopic end of the first spring rod 17 is fixedly installed on the side of the slider 21. The side of the piston disc and the inner end of the heat-conducting cylinder 18 are fixed with a touch switch 16. Two symmetrically arranged extension plates are fixed on the inside of the box body 4. The two extension plates The opposite sides are horizontally fixedly mounted with third spring rods 26, and the telescopic end of each third spring rod 26 is fixedly mounted with an L-shaped plate 23. The fixed end and the telescopic end of the third spring rod 26 are slidably connected by a spline, and the two ends of the L-shaped plate 23 are respectively provided with a first slope 24 and a second slope 25. A V-shaped plate 27 is provided inside the box body 4, and the end of the V-shaped plate 27 is fixedly sleeved on the fixed end surface of the first spring rod 17. The two oblique side surfaces of the V-shaped plate 27 are horizontally fixedly mounted with a cross bar 28, which slides between the cross bar 28 and the second slope 25.

[0040] Preferably, the two touch switches 16 will touch each other, and the elastic force generated by the first spring rod 17 will move the slider 21 and cause the second spring rod 22 to generate elastic force. The movement of the slider 21 will also drive the two movable rods 20 to move. The movement of the two movable rods 20 will drive the two slides 19 to move. The movement of the two slides 19 will drive the two L-shaped bars 14 and the centering block 13 to move. The movement of the two centering blocks 13 will contact the heated sleeve and center the heated sleeve, which will help improve the accuracy of the press-fitting of the rotor and the sleeve.

[0041] Please see the attached Figure 1 -Attached Figure 8In a preferred embodiment, the positioning and pressing assembly includes: a support plate 31, there are two support plates 31, the two support plates 31 are symmetrically arranged at the bottom of the horizontal side of the L-shaped frame 6, and the two support plates 31 are located between the four conveyor belts 5, and slide between the two support plates 31 and the four conveyor belts 5. A hydraulic telescopic rod 7 is vertically installed on the top of the horizontal side of the L-shaped frame 6, and the two touch switches 16 are electrically connected to the hydraulic telescopic rod 7, and a pressure plate 38 is horizontally provided below the horizontal side of the L-shaped frame 6. The output end of the hydraulic telescopic rod 7 is fixedly installed on the top of the pressure plate 38, and two symmetrically arranged fourth spring rods 34 are vertically fixed on the top of each support plate 31. The fixed ends of the four fourth spring rods 34 are fixedly installed on the bottom of the horizontal side of the L-shaped frame 6, and the corresponding two fourth The telescopic end surface of the spring rod 34 is sleeved with a connecting plate 35, and two symmetrically arranged separating plates 36 are vertically fixedly installed at the bottom of each connecting plate 35. A clamping plate 32 is slidably provided on the top of each support plate 31, and a first telescopic rod 33 is horizontally fixedly installed on the top of each support plate 31. The fixed end and the telescopic end of the first telescopic rod 33 are slidably connected by a spline. The telescopic end of the first telescopic rod 33 is fixedly installed on the side of the clamping plate 32, and two symmetrically arranged limiting plates 29 are vertically fixed to the bottom of the horizontal side of the L-shaped frame 6. A Z-shaped groove 30 is opened on the side of the limiting plate 29, and a sliding column 39 is slidably installed inside the Z-shaped groove 30. A horizontal plate 37 is horizontally fixedly installed on the side of the clamping plate 32, and the end of the sliding column 39 is fixedly installed on the side of the horizontal plate 37;

[0042] Furthermore, the sliding column 39 will move along the Z-shaped groove 30, and as the support plate 31 moves downward, the two clamping plates 32 will move closer to each other to clamp and position the top of the rotor, and finally the end of the rotor will be pressed into the inside of the sleeve after heating and expansion.

[0043] Please see the attached Figure 1 -Attached Figure 2 In a preferred embodiment, the driving assembly includes: a U-shaped frame 9, the two vertical sides of the U-shaped frame 9 are fixedly mounted on the top of the base plate 1, the top of the base plate 1 is equipped with a driving motor 8, the top of the horizontal side of the U-shaped frame 9 is rotatably mounted with a rotating shaft fixed to the bottom center of the turntable 2, and the output shaft of the driving motor 8 is mounted at the center of the end of the rotating shaft;

[0044] As mentioned above, the driving motor 8 is started to drive the rotating shaft to rotate, and the rotation of the rotating shaft drives the turntable 2 to rotate, so as to realize the reciprocating operation of the four positioning mechanisms, which helps to improve the assembly efficiency of the rotor and the sleeve.

[0045] The working principle of the present invention is as follows: first, the sleeve is placed inside the corresponding heating ring 3, and the rotor is placed on the conveyor belt 5 as shown in the attached figure. Starting the conveyor belt 5 can transport the rotor forward until the adjacent rotors push each other and push the corresponding rotor onto the support plate 31. The drive motor 8 is started synchronously to drive the shaft to rotate, and the rotation of the shaft drives the turntable 2 to rotate. The rotation of the turntable 2 drives the heating ring 3 box 4 and the placed sleeve to rotate to just below the L-shaped frame 6. It should be noted that the drive motor 8 only rotates ninety degrees each time, and when the first copper sheet 10 and the second copper sheet 11 come into contact, the corresponding heating ring 3 will heat the sleeve to achieve sleeve hole expansion.

[0046] As the heating ring 3 heats the shaft sleeve, the temperature of the heating ring 3 itself will also increase, and the heat-conducting tube 18 will also be heated and cause the mercury to expand. The expansion of mercury will push the piston disc to move, and the movement of the piston disc will drive the fixed end of the first spring rod 17 and the touch switch 16 connected thereto to move. Since the slider 21 is blocked by the L-shaped plate 23 at this time and cannot move in the direction close to the second spring rod 22, the movement of the fixed end of the first spring rod 17 will cause the first spring rod 17 to generate elastic force and drive the V-shaped plate 27 to move, realizing the power storage of the first spring rod 17. The movement of the V-shaped plate 27 drives the cross bar 28 to move. When the cross bar 28 contacts the second slope 25, it drives the L-shaped plate 23 to move. The movement of the L-shaped plate 23 will release the restriction on the slider 21, so that the stored force is released, and the two touch switches 16 will contact, then the elastic force generated by the first spring rod 17 will move the slider 21 and make the second spring rod 22 generate elastic force, the movement of the slider 21 will also drive the two movable rods 20 to move, the movement of the two movable rods 20 will drive the two slides 19 to move, the movement of the two slides 19 will drive the two L-shaped bars 14 and the centering block 13 to move, the movement of the two centering blocks 13 will contact the heated sleeve and center the heated sleeve, which will help improve the accuracy of the press-fitting of the rotor and the sleeve. It should be noted that the centering block 13 will not clamp the sleeve when it contacts it.

[0047] After the two touch switches 16 are in contact, the hydraulic telescopic rod 7 will work to drive the pressure plate 38 to move downward. The pressure plate 38 moves downward and contacts the top of the rotor on the bearing plate, then the pressure plate 38 will drive the rotor to move downward, and the downward movement of the rotor will drive the two support plates 31 to move downward and cause the fourth spring rod 34 to generate tension. It should be noted that when the fourth spring rod 34 generates tension, its telescopic rod will move downward, and the telescopic end of the fourth spring rod 34 will move downward, driving the connecting plate 35 and the separation plate 36 to move downward. The downward movement of the four separation plates 36 will limit the rotors adjacent to the rotor to be pressed. The support plate 31 moves downward, driving the clamping plate 32 and the first telescopic rod 33 to move downward, the clamping plate 32 moves downward, driving the cross plate 37 to move downward, and the cross plate 37 moves downward, driving the sliding column 39 to move downward. With the arrangement of the groove 30, the slide post 39 will move along the Z-groove 30 as the path, and as the support plate 31 moves downward, the two clamping plates 32 will move closer to each other to clamp and position the top of the rotor, and finally the end of the rotor will be pressed into the inside of the sleeve after heating and expansion, and the assembly of the rotor and the sleeve can be completed. After the press-fitting is completed, the hydraulic telescopic rod 7 is reset, and the tension generated by the fourth spring rod 34 will cause the support plate 31 to move downward, and the bearing plate moves upward to drive the rotor and the sleeve after press-fitting to move upward, so that the rotor after press-fitting is reset to the same height as before press-fitting. Then the conveyor belt 5 works, and the rotors push each other to drive the press-fitted rotor to move, and no longer contact the support plate 31, so as to realize the rapid unloading of the press-fitted rotor, and synchronously the next rotor to be press-fitted will move onto the support plate 31;

[0048] In summary, the rotor and the shaft sleeve can be assembled continuously by reciprocating in sequence, and since the heating of the shaft sleeve can be monitored, the assembly effect of the rotor and the shaft sleeve is guaranteed. In addition, the assembled rotor and shaft sleeve can be quickly lifted and unloaded, thereby improving the efficiency of the rotor and shaft sleeve assembly.

[0049] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A motor rotor shaft sleeve assembly device, comprising a base plate (1), characterized in that: Also includes: A turntable (2), the turntable (2) being arranged horizontally above the bottom plate (1), and a driving component for driving the turntable (2) to rotate is provided on the top of the bottom plate (1); A heating positioning component, the heating positioning component is arranged on the turntable (2), and the heating positioning component is used to position the shaft sleeve after heating; An L-shaped frame (6), wherein the vertical side of the L-shaped frame (6) is fixedly mounted on the top of the base plate (1); Conveyor belts (5), wherein there are four conveyor belts (5), and the four conveyor belts (5) are all horizontally fixedly installed on the top of the bottom plate (1), and the four conveyor belts (5) are symmetrically arranged in pairs, with a gap left between two corresponding conveyor belts (5); A positioning and pressing assembly, wherein the positioning and pressing assembly is arranged on the L-shaped frame (6) and is used to assemble the rotor and the shaft sleeve; The heating positioning assembly comprises: a heating ring (3) and a positioning mechanism, wherein there are four heating rings (3), each of which has a rectangular groove (12) on its symmetrical side surface, and the four heating rings (3) are evenly fixedly mounted in a ring shape on the top of the turntable (2), and a first copper sheet (10) is fixedly mounted on the top of the bottom plate (1), and the first copper sheet (10) and the four heating rings (3) are all electrically connected, and four second copper sheets (11) evenly distributed in a ring shape are fixed to the bottom of the turntable (2), and the four second copper sheets (11) are respectively electrically connected to the four heating rings (3), and the first copper sheet (10) and the four second copper sheets (11) slide between each other, and there are four positioning mechanisms, and the four positioning mechanisms are evenly distributed in a ring shape on the top of the turntable (2); The positioning mechanism comprises: a box (4), the box (4) being fixedly mounted on the top of the turntable (2), slide plates (19) being slidably mounted at both ends of the box (4), and transverse grooves (15) being provided at both ends of the side of the box (4), two symmetrically arranged L-shaped bars (14) being provided on the side of the box (4) having the transverse grooves (15), the long side ends of the two L-shaped bars (14) respectively passing through the two transverse grooves (15), and the long side ends of the two L-shaped bars (14) being fixedly mounted on the end surfaces of the two slide plates (19), and the short side top ends of the two L-shaped bars (14) being fixedly mounted with centering blocks (19) matching the rectangular grooves (12) 13), a slider (21) is slidably mounted inside the box (4), and movable rods (20) are rotatably mounted on opposite sides of the slider (21), and the other two ends of the two movable rods (20) are rotatably mounted on opposite sides of the two slide plates (19), a second spring rod (22) is horizontally fixedly mounted on the inner wall of the box (4), and the fixed end and the telescopic end of the second spring rod (22) are slidably connected via a spline, and the telescopic end of the second spring rod (22) is fixedly mounted on the side of the slider (21), and a heat-conducting tube (18) in contact with the heating ring (3) is horizontally fixedly mounted on the outer side of the box (4), and the inside of the heat-conducting tube (18) A piston disc is slidably arranged, mercury is arranged inside the heat-conducting tube (18), a first spring rod (17) is horizontally fixedly installed on the side of the piston disc away from the mercury, and the fixed end of the first spring rod (17) passes through the heat-conducting tube (18) and the side of the box body (4), the fixed end surface of the first spring rod (17) is slidably arranged in the inner wall of the side of the box body (4) through a spline, the telescopic end of the first spring rod (17) is fixedly installed on the side of the slider (21), the side of the piston disc and the inner end of the heat-conducting tube (18) are both fixed with a touch switch (16), and the inner side of the box body (4) is fixed with two symmetrically arranged extension plates, and the two extension plates are opposite to each other. A third spring rod (26) is fixedly installed horizontally on the side surface, and an L-shaped plate (23) is fixedly installed on the telescopic end of each of the third spring rods (26). The fixed end and the telescopic end of the third spring rod (26) are slidably connected via a spline, and the two ends of the L-shaped plate (23) are respectively provided with a first slope (24) and a second slope (25). A V-shaped plate (27) is provided inside the box body (4), and the end of the V-shaped plate (27) is fixedly sleeved on the fixed end surface of the first spring rod (17). A cross bar (28) is fixedly installed horizontally on the two oblique side surfaces of the V-shaped plate (27), and the cross bar (28) slides between the second slope (25).

2. The motor rotor shaft assembly device according to claim 1, characterized in that: The positioning and pressing assembly comprises: a support plate (31), wherein there are two support plates (31), the two support plates (31) are symmetrically arranged at the bottom of the horizontal side of the L-shaped frame (6), and the two support plates (31) are located between the four conveyor belts (5), and slide between the two support plates (31) and the four conveyor belts (5), a hydraulic telescopic rod (7) is vertically installed at the top of the horizontal side of the L-shaped frame (6), two touch switches (16) are electrically connected to the hydraulic telescopic rod (7), and a pressure plate (38) is horizontally arranged below the horizontal side of the L-shaped frame (6), and the output end of the hydraulic telescopic rod (7) is fixedly installed on the top of the pressure plate (38).

3. The motor rotor shaft assembly device according to claim 2, characterized in that: Two symmetrically arranged fourth spring rods (34) are vertically fixed to the top of each support plate (31), the fixed ends of the four fourth spring rods (34) are fixedly mounted on the bottom of the horizontal side of the L-shaped frame (6), and the telescopic end surfaces of the corresponding two fourth spring rods (34) are sleeved with a connecting plate (35), and the bottom of each connecting plate (35) is vertically fixedly mounted with two symmetrically arranged separation plates (36).

4. The motor rotor shaft assembly device according to claim 3, characterized in that: A clamping plate (32) is slidably arranged on the top of each support plate (31), and a first telescopic rod (33) is horizontally fixedly installed on the top of each support plate (31), the fixed end and the telescopic end of the first telescopic rod (33) are slidably connected via a spline, the telescopic end of the first telescopic rod (33) is fixedly installed on the side of the clamping plate (32), and two symmetrically arranged limiting plates (29) are vertically fixed at the bottom of the horizontal side of the L-shaped frame (6), a Z-shaped groove (30) is opened on the side of the limiting plate (29), a sliding column (39) is slidably installed inside the Z-shaped groove (30), a horizontal plate (37) is horizontally fixedly installed on the side of the clamping plate (32), and the end of the sliding column (39) is fixedly installed on the side of the horizontal plate (37).

5. The motor rotor shaft assembly device according to claim 4, characterized in that: The driving assembly comprises: a U-shaped frame (9), wherein two vertical sides of the U-shaped frame (9) are fixedly mounted on the top of the base plate (1), a driving motor (8) is mounted on the top of the base plate (1), a rotating shaft fixed at the bottom center of the turntable (2) is rotatably mounted on the top of the horizontal side of the U-shaped frame (9), and an output shaft of the driving motor (8) is mounted at the center of the end of the rotating shaft.

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