Automatic assembling device and automatic assembling method for electric drive motor gearbox

Abstract

The invention discloses an automatic assembling device and an automatic assembling method for an electric drive motor gearbox, which are applied to the technical field of automatic assembling devices for motor gearboxes. The base is fixedly connected with a floating compensation assembly used for positioning and placing a gearbox and a lifting positioning assembly which is movably connected to the base in the vertical direction based on a chain lifting assembly and used for positioning and lifting the gearbox. The base is movably connected with a clamping assembly used for clamping a motor based on the first mechanical arm and movably connected with an angle adjusting assembly used for adjusting a motor spline shaft according to the angle of a gearbox spline shaft so that the motor can be matched with the gearbox spline shaft based on the second mechanical arm. The assembling tool has the technical effects of high assembling efficiency and high yield.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic assembly devices for motor gear boxes, and in particular to an automatic assembly device and an automatic assembly method for an electric drive motor gear box. Background Art

[0002] At present, with the rapid development of the electric vehicle industry, high-performance, low-cost, and highly integrated powertrains have become an industry trend. In the current market, common electric drive assemblies are assembled from motors, reduction gearboxes, and inverters. During the assembly process, the motor needs to be assembled on the reduction gearbox, but the assembly process of the gearbox body has high requirements for precision. In addition, since the power of the motor needs to be transmitted to the gearbox, the motor main shaft uses a spline shaft, and the drive shaft needs to be engaged during assembly. The existing motor gearbox assembly is usually performed manually, but the efficiency is low, and the automated assembly method is difficult, and the success rate and yield rate are low, which requires improvement. Summary of the invention

[0003] The first object of the present invention is to provide an automatic assembly device for an electric drive motor gearbox, which has the advantages of high assembly efficiency and high yield rate.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: an automatic assembly device for an electric drive motor gearbox, comprising a base; the base is respectively fixedly connected with a floating compensation component for positioning and placing the gearbox and a lifting and positioning component movably connected to the base along the vertical direction based on a chain lifting component, and used to position and lift the gearbox; the base is movably connected with a clamping component for clamping the motor based on a first mechanical arm and is movably connected with an angle adjustment component based on a second mechanical arm for adjusting the spline shaft of the motor according to the angle of the spline shaft of the gearbox so that the spline shafts of the motor and the gearbox match.

[0005] The present invention is further configured as follows: the floating compensation component includes a base movably connected to the base along the vertical direction based on a guide return component and an X-direction floating table slidably connected to the base based on an X-direction floating guide rail; the X-direction floating table is slidably connected to a Y-direction floating table based on a Y-direction floating guide rail; the Y-direction floating table is rotatably connected to a positioning and placement table for positioning and placing a gear box based on a cross roller shaft ring; the base is symmetrically fixedly connected to first neodymium magnets for realizing automatic self-alignment of the X-direction floating table at both ends of the X-direction floating guide rail along the X direction; the X-direction floating table is symmetrically fixedly connected to second neodymium magnets for realizing automatic self-alignment of the Y-direction floating table at both ends of the Y-direction floating guide rail along the Y direction; and the Y-direction floating table is symmetrically fixedly connected to third neodymium magnets for realizing automatic self-alignment of the positioning and placement table at both ends of the Y-direction floating guide rail along the Y direction;

[0006] The present invention is further configured as follows: the guide return assembly includes a plurality of guide shafts fixedly connected to the base along the vertical direction and a guide sleeve fixedly connected to the base, a limit plate fixedly connected to the bottom of the guide shaft, a return spring fixedly connected between the limit plate and the guide sleeve, and a pressure sensor fixedly connected to the base for abutting the base.

[0007] The present invention is further configured as follows: the lifting and positioning assembly includes a lifting seat fixedly connected to the chain lifting assembly, the lifting seat is symmetrically fixedly connected with a chain conveyor line for conveying the gear box on both sides along the feeding direction of the gear box, the chain conveyor line is fixedly connected with side positioning plates on both sides for abutting against both sides of the gear box to achieve positioning, and the base is fixedly connected with an end positioning plate for abutting against the end of the gear box at the end of the chain conveyor line along the conveying direction.

[0008] The present invention is further configured as follows: the base is provided with a loading conveyor line and a unloading conveyor line at both ends of the floating compensation component for realizing loading and unloading of the gear box, and the placement surface of the positioning placement table is lower than the conveying surface of the loading conveyor line and the unloading conveyor line.

[0009] The present invention is further configured as follows: the clamping assembly includes a clamping seat fixedly connected to the first mechanical arm and a first clamping plate fixedly connected to one end of the clamping seat at one end; the other end of the clamping seat is slidably connected to a second clamping plate that cooperates with the first clamping plate based on a clamping cylinder; and a plurality of positioning rods for realizing motor positioning are fixedly connected to the first clamping plate and the second clamping plate.

[0010] The present invention is further configured as follows: the angle adjustment component includes a mounting frame fixedly connected to the second mechanical arm, a camera for photographing the angle information of the spline shaft in the gear box is fixedly connected to the bottom of the mounting frame, an elastic adjustment rod for embedding in the motor spline shaft and driving the motor spline shaft to rotate is rotatably connected to the top of the mounting frame, and a servo drive motor is fixedly connected to the angular difference between the initial position of the motor spline shaft and the gear box spline shaft and drives the elastic adjustment rod to rotate.

[0011] The present invention is further configured as follows: the elastic adjustment rod includes a rotating rod coaxially fixedly connected to the rotating shaft of the servo drive motor and an adjustment sleeve coaxially sleeved on the rotating rod for cooperating with the spline shaft of the motor, the adjustment sleeve rotates synchronously with the rotating rod, and the rotating rod is sleeved with a reset spring for realizing the reset of the adjustment sleeve.

[0012] The present invention is further configured as follows: the side wall of the installation frame is also fixedly connected with a pneumatic clamp for clamping the corrugated gasket.

[0013] A second object of the present invention is to provide an automatic assembly method for an electric drive motor gearbox, which has the advantages of high assembly efficiency and high yield rate.

[0014] The above technical objectives of the present invention are achieved through the following technical solutions: an automatic assembly method for an electric drive motor gearbox, using an automatic assembly device for an electric drive motor gearbox as described in any of the above technical solutions; comprising: Step 1: The gearbox is transported and placed on the lifting and positioning assembly, and the chain lifting assembly drives the lifting and positioning assembly and the gearbox to descend so that the gearbox is positioned and placed on the floating compensation assembly; Step 2: The first mechanical arm drives the clamping assembly to clamp the motor and transport the motor to the top of the gear box; Step 3, the second robot arm drives the angle adjustment component to move between the motor and the gear box, and adjusts the angle of the motor spline shaft based on the detection and calculation of the angle difference between the initial position of the motor spline shaft and the gear box spline shaft so that the angle of the motor spline shaft matches the angle of the gear box spline shaft; Step 4: The second robotic arm drives the motor to move downward and install it into the gear box. During the assembly process, the floating compensation assembly drives the gear box to float so that the motor and the gear box can be assembled.

[0015] In summary, the present invention has the following beneficial effects: 1. By setting a feeding conveyor line and a lifting and positioning component, the gear box is conveyed and positioned on the floating compensation component, and the motor is moved to the top of the gear box by using the first mechanical arm. The motor and the gear box are assembled on the floating compensation component. After the assembly is completed, the lifting and positioning component is driven by the chain lifting component to drive the motor and the gear box to rise and unload from the unloading conveyor line, thereby shortening the assembly time. During the assembly process, the floating compensation component eliminates the position deviation and angle deviation between the gear box and the motor, thereby improving the success rate of assembly and avoiding damage to the motor and the gear box during the assembly process. In addition, by adjusting the lifting and positioning component and replacing the positioning placement table of the floating compensation component, the loading and unloading and assembly requirements of gear boxes of different specifications can be adapted, thereby improving adaptability. 2. An angle adjustment component is set based on the second mechanical arm. The angle adjustment component obtains the angle information of the spline shaft in the gear box by setting a camera. At the same time, an elastic adjustment rod is set on the installation frame based on the servo drive motor. The elastic adjustment rod is slidably connected to the rotating rod and rotates synchronously with the rotating rod by setting an adjustment sleeve. The servo drive motor drives the rotating rod and the adjustment sleeve to rotate synchronously until the adjustment sleeve is engaged with the spline shaft of the motor. The engagement information of the adjustment sleeve and the spline shaft of the motor is obtained by monitoring the torque data of the servo drive motor. At this time, the servo drive motor obtains the initial position angle data of the spline shaft of the motor and compares it with the angle of the spline shaft in the gear box obtained by the camera. Then, the servo drive motor is controlled to rotate the corresponding angle so that the angle of the spline shaft of the motor and the gear box can be matched, so as to ensure that the assembly can be completed at one time during assembly, avoiding the need to manually adjust the angle of the spline shaft of the motor. The structure is simple, the efficiency of assembly is improved, and the damage of the spline shaft during assembly is avoided, thereby improving the yield rate. 3. The placement surface of the positioning sleeve of the floating compensation component is set lower than the conveying surface of the loading conveyor line and the unloading conveyor line. When loading, the gear box is first transported from the loading conveyor line to the positioning and lifting component, and then the chain lifting line drives the gear box down to position the gear box on the floating compensation component. On the one hand, by embedding the floating compensation component between the chain lifting lines during the loading process of the gear box, it can directly avoid the impact on the floating compensation component during the loading process, which may cause the floating compensation component to be unable to return to the correct position and affect the floating accuracy, thereby avoiding affecting the assembly accuracy; on the other hand, the embedded installation of the floating compensation component can avoid the need to add additional lifting structure and guide structure after the motor and gear box are assembled to realize the unloading of the gear box, thereby greatly reducing the space occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of this embodiment; Figure 2 yes Figure 1 A magnified schematic diagram of part A; Figure 3 is a structural schematic diagram of the lifting and positioning assembly of this embodiment; Figure 4 is a schematic structural diagram of the floating compensation assembly of this embodiment; Figure 5 is a structural cross-sectional view of the floating compensation assembly of this embodiment; Figure 6 Schematic diagram of the structure of the angle adjustment component of this embodiment.

[0017] Reference numerals: 1, base; 2, floating compensation assembly; 21, guide recovery assembly; 22, X-direction floating guide rail; 23, X-direction floating platform; 24, Y-direction floating guide rail; 25, Y-direction floating platform; 26, cross roller ring; 27, positioning and placing platform; 28, first neodymium magnet; 29, second neodymium magnet; 210, third neodymium magnet; 211, base; 212, guide shaft; 213, guide sleeve; 214, limit plate; 215, recovery spring; 216, pressure sensor; 3, chain lifting assembly; 4, lifting and positioning assembly; 41 , lifting seat; 42, chain conveyor line; 43, side positioning plate; 44, end positioning plate; 5, first mechanical arm; 6, clamping assembly; 61, clamping seat; 62, first clamping plate; 63, clamping cylinder; 64, second clamping plate; 65, positioning rod; 7, second mechanical arm; 8, angle adjustment assembly; 81, mounting frame; 82, camera; 83, elastic adjustment rod; 831, rotating rod; 832, adjustment sleeve; 833, reset spring; 84, servo drive motor; 85, pneumatic clamp; 9, loading conveyor line; 10, unloading conveyor line. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0019] Embodiment 1: refer to Figures 1 to 6 An automatic assembly device for an electric drive motor gearbox comprises a base 1, on which a floating compensation component 2 for positioning and placing a gearbox and a lifting and positioning component 4 for positioning and lifting the gearbox are fixedly connected, respectively, based on a chain lifting component 3 and movably connected to the base 1 along a vertical direction. The base 1 is provided with a loading conveyor line 9 and a unloading conveyor line 10 for realizing loading and unloading of the gearbox at both ends of the floating compensation component 2. The gearbox is input from the loading conveyor line 9 and enters the lifting and positioning component 4 for positioning. The floating compensation component 2 is embeddedly installed between the lifting and positioning components 4. When the gearbox is positioned After completion, the chain lifting assembly 3 drives the lifting and positioning assembly 4 and the gear box to descend and be placed on the floating compensation assembly 2. On the base 1, a clamping assembly 6 for clamping the motor is movably connected based on the first mechanical arm 5, and an angle adjustment assembly 8 for adjusting the spline shaft of the motor according to the angle of the spline shaft of the gear box so that the spline shafts of the motor and the gear box match is movably connected based on the second mechanical arm 7. The motor is transported to the top of the gear box based on the first mechanical arm 5, and the angle adjustment assembly 8 is transported between the motor and the gear box based on the second mechanical arm 7 to adjust the spline shaft of the motor according to the spline shaft of the gear box.

[0020] refer to Figures 4 to 5Specifically, the floating compensation component 2 includes a base 211 movably connected to the base 1 along the vertical direction based on the guide recovery component 21 and an X-direction floating table 23 slidably connected to the base 211 based on the X-direction floating guide rail 22. A Y-direction floating table 25 is slidably connected to the X-direction floating table 23 based on the Y-direction floating guide rail 24. A positioning placement table 27 for positioning and placing the gear box is rotatably connected to the Y-direction floating table 25 based on the cross roller shaft ring 26. The placement surface of the positioning placement table 27 is lower than the conveying surface of the loading conveyor line 9 and the unloading conveyor line 10 to avoid the impact on the floating compensation component 2 during the gear box loading process, which causes the floating compensation component 2 to be unable to return and affect the floating accuracy, avoid affecting the assembly accuracy, and also reduce the space occupation. The base 211 is symmetrically fixedly connected to the first neodymium magnet 28 for realizing automatic return of the X-direction floating table 23 at both ends of the X-direction floating guide rail 22 along the X direction. The X-direction floating table 23 is fixedly connected to the Y-direction floating guide rail 2 The second neodymium magnets 29 for realizing the automatic reset of the Y-direction floating table 25 are symmetrically fixedly connected at both ends along the Y direction, and the third neodymium magnets 210 for realizing the automatic reset of the positioning and placing table 27 are symmetrically fixedly connected at both ends along the circumferential direction of the Y-direction floating table 25. Magnetic blocks corresponding to the first neodymium magnets 28, the second neodymium magnets 29 and the third neodymium magnets 210 are respectively provided on the X-direction floating table 23, the Y-direction floating table 25 and the positioning and placing table 27 to generate magnetic force, thereby realizing the reset of the X-direction floating table 23, the Y-direction floating table 25 and the positioning and placing table 27. A servo locking cylinder and a conical sleeve structure are also provided on the base 211 to detect whether the X-direction floating table 23, the Y-direction floating table 25 and the positioning and placing table 27 are reset. The guide return assembly 21 includes a plurality of guide shafts 212 fixedly connected to the base 211 along the vertical direction and a guide sleeve 213 fixedly connected to the base 1. A limit plate 214 is fixedly connected to the bottom of the guide shaft 212. A return spring 215 is fixedly connected between the limit plate 214 and the guide sleeve 213. A pressure sensor 216 for contacting the base 211 is fixedly connected to the base 1. When the chain lifting assembly 3 drives the lifting and positioning assembly 4 and the gear box to descend, the gravity of the gear box acts on the positioning and placing table 27, and the return spring 215 is stretched to apply an upward elastic force to the guide shaft 212 to support the gear box. The pressure sensor 216 monitors whether the gear box is in place. In this embodiment, the X-direction floating guide rail 22 and the Y-direction floating guide rail 24 both use cross roller guide rails to meet high load requirements.

[0021] refer to Figure 1 and Figure 3Specifically, the lifting and positioning assembly 4 includes a lifting seat 41 fixedly connected to the chain lifting assembly 3, and a chain conveying line 42 for conveying the gear box is symmetrically fixedly connected on both sides of the lifting seat 41 along the feeding direction of the gear box. Side positioning plates 43 are fixedly connected on both sides of the chain conveying line 42 to abut against both sides of the gear box to achieve positioning. The base 1 is fixedly connected to an end positioning plate 44 for abutting against the end of the gear box at the end of the chain conveying line 42 along the conveying direction. After the gear box enters the lifting seat 41, the positioning of the gear box is achieved based on the side positioning plates 43 and the end positioning plates 44.

[0022] refer to Figure 1 and Figure 2 Specifically, the clamping assembly 6 includes a clamping seat 61 fixedly connected to the first mechanical arm 5 and a first clamping plate 62 with one end fixedly connected to one end of the clamping seat 61. A second clamping plate 64 that cooperates with the first clamping plate 62 is slidably connected to the other end of the clamping seat 61 based on a clamping cylinder 63. A plurality of positioning rods 65 for positioning the motor are fixedly connected to the first clamping plate 62 and the second clamping plate 64. The second clamping plate 64 is driven to slide by the clamping cylinder 63 to clamp or release the motor, and the positioning rod 65 cooperates with the positioning hole on the motor to position the motor.

[0023] refer to Figure 1 and Figure 6Specifically, the angle adjustment component 8 includes a mounting frame 81 fixedly connected to the second robotic arm 7, a camera 82 for photographing the angle information of the spline shaft in the gear box fixedly connected to the bottom of the mounting frame 81, an elastic adjustment rod 83 for embedding on the motor spline shaft and driving the motor spline shaft to rotate rotatably connected to the top of the mounting frame 81, and a servo drive motor 84 fixedly connected to the angular difference between the initial position of the motor spline shaft and the gear box spline shaft and driving the elastic adjustment rod 83 to rotate. The elastic adjustment rod 83 includes a rotating rod 831 coaxially fixedly connected to the rotating shaft of the servo drive motor 84 and an adjusting sleeve 832 coaxially sleeved on the rotating rod 831 for cooperating with the spline shaft of the motor. The adjusting sleeve 832 rotates synchronously with the rotating rod 831, and a reset spring 833 for resetting the adjusting sleeve 832 is sleeved on the rotating rod 831. The servo drive motor 84 drives the rotating rod 831 and the adjusting sleeve 832 to rotate synchronously until the adjusting sleeve 832 is meshed with the spline shaft of the motor. The engagement information of the adjusting sleeve 832 and the spline shaft of the motor is obtained by monitoring the torque data of the servo drive motor 84. At this time, the servo drive motor 84 obtains the initial position angle data of the spline shaft of the motor and compares it with the angle of the spline shaft in the gear box obtained by the camera 82. Then, the servo drive motor 84 is controlled to rotate the corresponding angle so that the angle of the spline shaft of the motor and the gear box can be matched, so as to ensure that the assembly can be completed at one time during assembly, avoiding the need to manually adjust the angle of the spline shaft of the motor. A pneumatic clamp 85 for clamping the corrugated gasket is also fixedly connected to the side wall of the installation frame 81, and the corrugated gasket is used to position the motor shaft and the bearing. The angle of the installation frame 81 is adjusted by the second robotic arm 7 so that the pneumatic clamp 85 places the corrugated gasket on the gear box.

[0024] Embodiment 2: An automatic assembly method for an electric drive motor gearbox, using an automatic assembly device for an electric drive motor gearbox as shown in Example 1, comprising: Step 1: The gearbox is transported and placed on the lifting and positioning assembly 4, and the chain lifting assembly 3 drives the lifting and positioning assembly 4 and the gearbox to descend so that the gearbox is positioned and placed on the floating compensation assembly 2; Step 2, the first mechanical arm 5 drives the clamping assembly 6 to clamp the motor and transport the motor to the top of the gear box; Step 3, the second mechanical arm 7 drives the angle adjustment component 8 to move between the motor and the gear box, and adjusts the angle of the motor spline shaft based on the detection and calculation of the angle difference between the initial position of the motor spline shaft and the gear box spline shaft so that the angle of the motor spline shaft matches that of the gear box spline shaft; Step 4: The second mechanical arm 7 drives the motor to move downward and install it into the gear box. During the assembly process, the floating compensation component 2 drives the gear box to float so that the motor and the gear box can be assembled.

[0025] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

Claims

1. An automatic assembly device for an electric drive motor gearbox, comprising a base (1); characterized in that: The base (1) is respectively fixedly connected with a floating compensation component (2) for positioning and placing the gear box, and a lifting and positioning component (4) movably connected to the base (1) along the vertical direction based on a chain lifting component (3) for positioning and lifting the gear box. The base (1) is movably connected with a clamping component (6) for clamping the motor based on a first mechanical arm (5), and is movably connected with an angle adjustment component (8) based on a second mechanical arm (7) for adjusting the spline shaft of the motor in accordance with the angle of the spline shaft of the gear box so that the spline shafts of the motor and the gear box match.

2. The electric drive motor gearbox automatic assembly device according to claim 1, characterized in that: The floating compensation assembly (2) comprises a base (211) movably connected to the base (1) along the vertical direction based on a guide return assembly (21) and an X-direction floating table (23) slidably connected to the base (211) based on an X-direction floating guide rail (22); a Y-direction floating table (25) slidably connected to the X-direction floating table (23) based on a Y-direction floating guide rail (24); a positioning and placement table (27) for positioning and placing a gear box is rotatably connected to the Y-direction floating table (25) based on a cross roller shaft ring (26); the base (21 1) A first neodymium magnet (28) for realizing automatic alignment of the X-direction floating platform (23) is symmetrically fixedly connected at both ends of the X-direction floating guide rail (22) along the X-direction, and a second neodymium magnet (29) for realizing automatic alignment of the Y-direction floating platform (25) is symmetrically fixedly connected at both ends of the Y-direction floating guide rail (24) along the Y-direction, and a third neodymium magnet (210) for realizing automatic alignment of the positioning and placing platform (27) is symmetrically fixedly connected at both ends of the Y-direction floating guide rail (24) along the Y-direction.

3. The electric drive motor gearbox automatic assembly device according to claim 2, characterized in that: The guide return assembly (21) comprises a plurality of guide shafts (212) fixedly connected to the base (211) along a vertical direction and a guide sleeve (213) fixedly connected to the base (1); a limit plate (214) is fixedly connected to the bottom of the guide shaft (212); a return spring (215) is fixedly connected between the limit plate (214) and the guide sleeve (213); and a pressure sensor (216) for abutting against the base (211) is fixedly connected to the base (1).

4. The electric drive motor gearbox automatic assembly device according to claim 1, characterized in that: The lifting and positioning assembly (4) comprises a lifting seat (41) fixedly connected to the chain lifting assembly (3); the lifting seat (41) is symmetrically fixedly connected to a chain conveyor line (42) for conveying the gear box on both sides along the feeding direction of the gear box; the chain conveyor line (42) is fixedly connected to side positioning plates (43) on both sides for abutting against the two sides of the gear box to achieve positioning; the base (1) is fixedly connected to an end positioning plate (44) for abutting against the end of the gear box at the end of the chain conveyor line (42) along the conveying direction.

5. The electric drive motor gearbox automatic assembly device according to claim 2, characterized in that: The base (1) is provided with a loading conveyor line (9) and a unloading conveyor line (10) at both ends of the floating compensation component (2) for loading and unloading the gear box, respectively; the placement surface of the positioning placement platform (27) is lower than the conveying surface of the loading conveyor line (9) and the unloading conveyor line (10).

6. The electric drive motor gearbox automatic assembly device according to claim 1, characterized in that: The clamping assembly (6) includes a clamping seat (61) fixedly connected to the first mechanical arm (5) and a first clamping plate (62) with one end fixedly connected to one end of the clamping seat (61); the other end of the clamping seat (61) is slidably connected to a second clamping plate (64) that cooperates with the first clamping plate (62) based on a clamping cylinder (63); and a plurality of positioning rods (65) for realizing motor positioning are fixedly connected to the first clamping plate (62) and the second clamping plate (64).

7. The electric drive motor gearbox automatic assembly device according to claim 1, characterized in that: The angle adjustment assembly (8) comprises a mounting frame (81) fixedly connected to the second mechanical arm (7); a camera (82) for photographing angle information of a spline shaft in a gear box is fixedly connected to the bottom of the mounting frame (81); an elastic adjustment rod (83) for embedding in a motor spline shaft and driving the motor spline shaft to rotate is rotatably connected to the top of the mounting frame (81); and a servo drive motor (84) is fixedly connected to the servo drive motor (84) for driving the elastic adjustment rod (83) to rotate based on the angle difference between the initial position of the motor spline shaft and the gear box spline shaft.

8. The electric drive motor gearbox automatic assembly device according to claim 7, characterized in that: The elastic adjustment rod (83) comprises a rotating rod (831) coaxially fixedly connected to the rotating shaft of the servo drive motor (84) and an adjustment sleeve (832) coaxially sleeved on the rotating rod (831) for cooperating with the spline shaft of the motor, the adjustment sleeve (832) rotating synchronously with the rotating rod (831), and a reset spring (833) sleeved on the rotating rod (831) for realizing reset of the adjustment sleeve (832).

9. The electric drive motor gearbox automatic assembly device according to claim 7, characterized in that: The side wall of the installation frame (81) is also fixedly connected with a pneumatic clamp (85) for clamping the corrugated gasket.

10. An automatic assembly method for an electric drive motor gearbox, using an automatic assembly device for an electric drive motor gearbox as described in any one of claims 1 to 9; characterized in that: include: Step 1: The gear box is transported and placed on the lifting and positioning assembly (4), and the chain lifting assembly (3) drives the lifting and positioning assembly (4) and the gear box to descend so that the gear box is positioned and placed on the floating compensation assembly (2); Step 2: The first mechanical arm (5) drives the clamping assembly (6) to clamp the motor and transport the motor to the top of the gear box; Step 3, the second mechanical arm (7) drives the angle adjustment component (8) to move between the motor and the gear box, and adjusts the angle of the motor spline shaft based on the detection and calculation of the angle difference between the initial position of the motor spline shaft and the gear box spline shaft so that the angle of the motor spline shaft matches that of the gear box spline shaft; Step 4: The second mechanical arm (7) drives the motor to move downward and install it into the gear box. During the assembly process, the floating compensation component (2) drives the gear box to float so that the motor and the gear box can be assembled.

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