Motor end cover mounting device and mounting method

Abstract

The present invention relates to the technical field of motor installation, and specifically discloses a motor end cover installation device and installation method, including a frame, including a press-fitting mechanism for pressing the end cover into a stator base, the press-fitting mechanism including a press-fitting workbench, a pressing piece for positioning and pressing the end cover onto the stator base is provided above the press-fitting workbench, and a pneumatic hammer for knocking the end cover into the stator base is provided around the pressing piece. In the present invention, the end cover and the stator base are first pressed and positioned by the pressing piece, and then the end cover is struck by the pneumatic hammer, so that the end cover can be knocked into the corresponding installation position of the end cover in the stator base smoothly and accurately. Through the mutual cooperation between the pressing piece and the pneumatic hammer, the press-fitting accuracy of the end cover is effectively improved, and the damage to the parts during the press-fitting process is effectively reduced. The press-fitting effect of the end cover is good, and the yield rate of the finished product is high.

Description

Technical Field

[0001] The present invention relates to the technical field of motor installation, and in particular to a motor end cover installation device and an installation method. Background Art

[0002] During the assembly process of new energy vehicle motors, the stator and the casing are generally assembled together to form a stator base, and then the end cover needs to be pressed into the stator base and then tightened with screws. Due to the high installation precision requirements between the end cover and the stator base, the failure to press the end cover into place will seriously affect the quality of the finished product, which is difficult. In addition, in the existing motor industry, people pursue high-torque and high-speed motors, which leads to an increase in the length and width of the magnetic steel, further increasing the difficulty of accurately pressing the end cover. In the existing automatic installation process of the end cover, the end cover is usually forced to be directly pressed into the stator base, which is prone to problems such as the end cover not being pressed into place, gaps left after pressing, and parts being damaged and worn. The pressing effect of the end cover is not good and it is easy to cause damage to the parts. Summary of the invention

[0003] The purpose of the present invention is to provide a motor end cover installation device and installation method with good pressing effect and parts that are not easily damaged in view of the existing technical status.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme:

[0005] A motor end cover installation device comprises a frame and a press-fitting mechanism for pressing the end cover into a stator base. The press-fitting mechanism comprises a press-fitting workbench. A pressing piece for positioning and pressing the end cover onto the stator base is provided above the press-fitting workbench. A pneumatic hammer for knocking the end cover into the stator base is provided around the pressing piece.

[0006] In some embodiments, a booster cylinder is provided above the compression piece, and the booster cylinder includes a working end capable of driving the compression piece and the pneumatic hammer to rise and fall, and a booster assembly for boosting the compression piece.

[0007] In some embodiments, the pressing piece is connected to the working end, and the pressing piece and the working end are arranged along the same axial direction. The pressing piece is connected to a mounting plate, and the pneumatic hammer is provided with a mounting plate.

[0008] In some embodiments, the boosting assembly includes a boosting cylinder and a boosting pipeline for delivering compressed gas to the boosting cylinder, the pneumatic hammer is connected to an air intake pipeline, and the boosting pipeline is in communication with the air intake pipeline.

[0009] In some embodiments, the pneumatic hammer is provided with a hammer head for striking the end cover, and the hammer head is connected to a counterweight block.

[0010] In some embodiments, the hammer head is provided with a buffer layer.

[0011] In some embodiments, a screw locking mechanism for locking the screws between the end cover and the stator base is provided at the downstream end of the press-fitting mechanism, and a conveying mechanism is provided between the press-fitting mechanism and the screw locking mechanism. The conveying mechanism includes a first station turntable provided on the press-fitting workbench and a second station turntable provided below the screw locking mechanism, and a robot arm that can move between the first station turntable and the second station turntable is provided between the first station turntable and the second station turntable.

[0012] In some embodiments, the first station turntable is provided with a loading station, a pressing station, a transition station and a robot gripping station in sequence according to the rotation direction, and the second station turntable is provided with a robot discharge station, a transfer station, a locking station and an unloading station in sequence according to the rotation direction.

[0013] The present invention also discloses a method for installing a motor end cover, comprising the following steps:

[0014] The end cover is placed on the stator frame and fixed to the stator frame by a pressing piece, and then a pneumatic hammer is used to knock the end cover into the stator frame.

[0015] In some embodiments, the following step is also included: while the pneumatic hammer is performing the striking action, the pressing piece is pressurized.

[0016] The beneficial effects of the present invention are:

[0017] Compared with the prior art method of directly forcibly pressing the end cover into the stator base, in the present invention, the end cover and the stator base are first pressed and positioned by a pressing piece, and then the end cover is struck by a pneumatic hammer, so that the end cover can be smoothly and accurately knocked into the corresponding installation position of the end cover in the stator base. Through the mutual cooperation between the pressing piece and the pneumatic hammer, the pressing accuracy of the end cover is effectively improved, and the damage to the parts during the pressing process is effectively reduced. The pressing effect of the end cover is good and the yield rate of the finished product is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the motor end cover installation device of embodiment 1 of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the press-fitting mechanism of the present invention.

[0020] Figure 3 This is a schematic structural diagram of a motor end cover mounting device according to Embodiment 3 of the present invention.

[0021] Figure 4 for Figure 3 Schematic diagram of the local structure of part A.

[0022] Figure 5 This is a flow chart of a method for installing a motor end cover according to Embodiment 1 of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0024] Example 1

[0025] See also Figure 1 , Figure 2 and Figure 5 As shown, the present invention discloses a motor end cover installation device, including a frame 1, including a press-fitting mechanism 2 for pressing the end cover into a stator base, the press-fitting mechanism 2 includes a press-fitting workbench, a pressing piece 21 for positioning and pressing the end cover onto the stator base is provided above the press-fitting workbench, and a pneumatic hammer 22 for knocking the end cover into the stator base is provided on the periphery of the pressing piece 21. Preferably, at least two pneumatic hammers 22 are provided and are evenly distributed around the pressing piece 21. In this embodiment, three pneumatic hammers 22 are provided and the three pneumatic hammers 22 are evenly distributed around the pressing piece 21.

[0026] See also Figure 1 As shown, during the press-fitting process, the stator base is placed on the press-fitting workbench, and the end cover is placed on the stator base, and then the pressure piece 21 is pressed down. On the one hand, the end cover is positioned on the stator base, and on the other hand, the end cover and the stator base are positioned as a whole on the press-fitting workbench to prevent the end cover and the stator base from tipping over or shifting when the subsequent pneumatic hammer 22 is working. After the pressure piece 21 is pressed down and fixed, the pneumatic hammer 22 starts to work, and the pneumatic hammer 22 strikes the end cover to press the end cover into the stator base.

[0027] The vibration knocking operation of the pneumatic hammer 22 causes less damage to components such as the end cover and the stator base. According to calculations, the pressure of the end cover pressed into the stator base by the pneumatic hammer 22 is ≤500N·m, which can ensure that the end cover is pressed into the stator base smoothly without causing damage to the components.

[0028] In addition, by adjusting the air pressure of the pneumatic hammer 22, the speed of the striking rhythm and the size of the pressure can also be adjusted, so that the appropriate striking force can be adjusted according to the processing requirements of workpieces of different specifications and sizes, and the adaptability is wider.

[0029] Compared with the prior art method of directly forcibly pressing the end cover into the stator base, in the present invention, the end cover and the stator base are first pressed and positioned by the pressing piece 21, and then the end cover is struck by the pneumatic hammer 22, so that the end cover can be smoothly and accurately knocked into the corresponding installation position of the end cover in the stator base. Through the mutual cooperation between the pressing piece 21 and the pneumatic hammer 22, the pressing accuracy of the end cover is effectively improved, and the damage to the parts during the pressing process is effectively reduced. The pressing effect of the end cover is good and the yield rate of the finished product is high.

[0030] See also Figure 1 and Figure 2 As shown, a booster cylinder 23 is provided above the pressing piece 21. In this embodiment, the booster cylinder 23 is a pre-pressurized booster cylinder 23. The booster cylinder 23 includes a working end that can drive the pressing piece 21 and the pneumatic hammer 22 to rise and fall, and a booster component 231 for pressurizing the pressing piece 21.

[0031] Under normal conditions, the working end of the boost cylinder 23 is in a retracted state, and the pressure piece 21 and the pneumatic hammer 22 are located at a certain height so that the end cover and the stator base can move to the bottom of the pressure piece 21. During press-fitting, the working end of the boost cylinder 23 extends outward, driving the pressure piece 21 and the pneumatic hammer 22 to descend. At this time, the boost cylinder 23 is in a pre-pressurized state, that is, the boost component 231 has not yet performed a boosting operation. The boost component 231 does not start to boost until the pressure piece 21 is pressed on the end cover. The boost component 231 acts on the pressure piece 21 through the working end to boost the pressure of the pressure piece 21 to increase the pressure of the pressure piece 21 on the end cover. While the boost component 231 is boosting, the pneumatic hammer 22 starts to knock the end cover, and acts on the end cover together with the pressurized pressure piece 21, so that the end cover is knocked into the stator base smoothly.

[0032] The present invention uses the mutual cooperation between the boost cylinder 23, the pressing piece 21 and the pneumatic hammer 22. During press-fitting, the boost cylinder 23 first drives the pressing piece 21 to press and position the end cover. Then, the boosting operation of the boost component 231 and the striking operation of the pneumatic hammer 22 act on the end cover synchronously, so that the middle and surrounding parts of the end cover are subjected to force at the same time, avoiding the displacement and damage of components caused by excessive concentration of force during the pressing process, and the end cover can be knocked into the stator base smoothly and accurately.

[0033] See also Figure 1 and Figure 2As shown, in this embodiment, the pressure piece 21 is connected to the working end, and the pressure piece 21 and the working end are arranged along the same axial direction, so that the booster cylinder 23 can apply pressure to the end cover through the pressure piece 21, and the pressure piece 21 is connected to the mounting plate 24, and the pneumatic hammer 22 is arranged on the mounting plate 24, wherein the mounting plate 24 is an annular structure and is arranged along the vertical direction of the pressure piece 21, and multiple pneumatic hammers 22 are evenly distributed around the pressure piece 21 through the mounting plate 24, and the pressure piece 21 is a hollow columnar structure. The upper end of the pressure piece 21 is connected to the working end, and the lower end of the pressure piece 21 forms a pressing end surface for pressing the end cover. The pressure piece 21 and the mounting plate 24 can be integrally formed. Specifically, the side wall of the pressure piece 21 extends outward in the radial direction to form the above-mentioned mounting plate 24.

[0034] During press fitting, the working end extends outward, driving the pressing piece 21 to be pressed down onto the end cover, and simultaneously driving the mounting plate 24 to move down, so that the pneumatic hammer 22 moves down to a height position convenient for the striking operation.

[0035] The present invention uses the installation arrangement between the pressing piece 21, the mounting plate 24 and the working end of the booster cylinder 23 so that the booster cylinder 23 can not only cooperate to drive the pressing piece 21 and the pneumatic hammer 22 to rise and fall during the press-fitting process, but also realize the positioning and press-fitting of the end cover by the pressing piece 21 during the press-fitting process, and the overall structure is simpler and more compact.

[0036] The boosting assembly 231 includes a boosting cylinder and a boosting pipeline for conveying compressed gas to the boosting cylinder. A boosting piston rod is provided in the boosting cylinder. The pneumatic hammer 22 is connected to an air intake pipeline, and the boosting pipeline is communicated with the air intake pipeline.

[0037] During press-fitting, the working end of the boost cylinder 23 extends outward, driving the pressing piece 21 and the pneumatic hammer 22 to descend. At this time, the boost cylinder 23 is in a pre-pressurized state, that is, the boost component 231 has not yet performed the boosting operation. Until the pressing piece 21 is pressed on the end cover, the boost component 231 starts to boost. At this time, the air compressor delivers compressed gas to the boost cylinder through the boost pipe, and the boost piston rod is pushed in the direction close to the working end by the compressed gas, pressurizing the working end, thereby increasing the pressure applied to the end cover. At the same time, since the boost pipe is connected to the air intake pipe, the compressed gas can flow into the air intake pipe synchronously, and the pneumatic hammer 22 performs the knocking operation driven by the compressed gas.

[0038] The present invention connects the air intake pipe of the pneumatic hammer 22 with the boost pipe of the boost cylinder 23, so that the pneumatic hammer 22 can start the knocking operation after the end cover is positioned at the working end and the boost cylinder 23 is operating, thereby improving the coordination between the boost cylinder 23, the pressing piece 21 and the pneumatic hammer 22 during the pressing process, further ensuring that the end cover can be knocked into the corresponding installation position of the end cover in the stator base smoothly and accurately. The product structure is simple and easy to implement.

[0039] See also Figure 2 As shown, the pneumatic hammer 22 is provided with a hammer head 221 for striking the end cover, and the hammer head 221 is provided with a buffer layer. Optionally, the buffer layer can be sleeved or adhered to the hammer head 221. In this embodiment, the buffer layer is a rubber sleeve sleeved on the hammer head 221. By providing the buffer layer, on the one hand, the surface of the end cover is prevented from being scratched during the striking process, and on the other hand, the force of the pneumatic hammer 22 can be effectively reduced, so that the end cover can be pressed into the stator frame more smoothly, thereby further improving the press-fitting accuracy of the end cover and the protection effect of parts during the press-fitting process, the press-fitting effect is better, and the yield rate of finished products is further improved.

[0040] This embodiment also discloses a method for installing a motor end cover, comprising the following steps:

[0041] The end cover is placed on the stator base and fixed to the stator base by the pressing piece 21. Then the pneumatic hammer 22 performs a knocking operation. While the pneumatic hammer 22 performs the knocking action, the pressing piece 21 is pressurized to press the end cover into the stator base.

[0042] For details, see Figure 5 As shown, the following steps are included:

[0043] S11. Place the end cover on the stator frame;

[0044] S12. When the booster assembly 231 is closed, the working end of the booster cylinder 23 is pressed downward, driving the pneumatic hammer 22 and the pressing member 21 downward until the pressing member 21 is pressed and fixed on the end cover;

[0045] S13. The booster assembly 231 and the pneumatic hammer 22 are started synchronously, and the pressing piece 21 and the pneumatic hammer 22 jointly press the end cover onto the stator base.

[0046] Example 2

[0047] The difference between this embodiment and the first embodiment is that the hammer head 221 is further connected with a counterweight.

[0048] The pneumatic hammer 22 utilizes the high-pressure compressed gas discharged from the air compressor to enter the pneumatic hammer 22 through the air intake pipe. The compressed gas pushes the piston in the pneumatic hammer 22 (the piston is connected to the hammer head 221) upward, and the gas in the air chamber on the piston is discharged through the exhaust hole of the air chamber on the piston under the compression of the piston. When the piston moves upward to the end point, the compressed gas automatically switches the ventilation direction through the groove and airway in the pneumatic hammer 22, so that the compressed gas enters the air chamber on the piston. The compressed gas pushes the piston downward to the end point, and the first cycle ends.

[0049] However, the existing pneumatic hammer 22 has a stroke defect problem. If the piston is not retracted in time, the hammer head 221 will not be able to fall due to insufficient power and will stop halfway and cannot move.

[0050] In this embodiment, a counterweight is provided on the hammer head 221. Optionally, the counterweight may be a small iron block of 15 g, but is not limited thereto. When the piston of the pneumatic hammer 22 fails to retract in time, the hammer head 221 may perform free fall motion under the action of the counterweight, thereby ensuring that the pneumatic hammer 22 does not stagnate during the striking operation and maintains a vibrating striking state.

[0051] Example 3

[0052] See also Figure 3 and Figure 4 As shown, the difference between this embodiment and embodiment 1 is that a screw locking mechanism 6 for locking the screws between the end cover and the stator frame is provided at the downstream end of the press-fitting mechanism 2, and a conveying mechanism is provided between the press-fitting mechanism 2 and the screw locking mechanism 6. The conveying mechanism includes a first station turntable 3 provided on the press-fitting workbench and a second station turntable 5 provided below the screw locking mechanism 6, and a manipulator 4 that can move between the first station turntable 3 and the second station turntable 5 is provided between the first station turntable 3 and the second station turntable 5.

[0053] In this embodiment, the screw locking mechanism 6 includes a screw locking gun 61, a horizontal moving part for driving the screw locking gun 61 to move horizontally, and a vertical moving part for driving the screw locking gun 61 to move up and down. The vertical moving part is arranged between the horizontal moving part and the screw locking gun 61. Among them, the horizontal moving part and the vertical moving part can be a cylinder, a motor screw assembly, a motor synchronous belt assembly, etc., and it is only necessary to realize the horizontal and vertical movements of the screw locking gun 61. The screw locking gun 61 can be a commercially available product and will not be repeated here.

[0054] Furthermore, a photoelectric sensor for sensing the press-fitted parts (i.e., the accessories formed by the end cover being pressed into the stator frame) can be provided on the screw locking mechanism 6. When the press-fitted parts are transported to the position of the screw locking mechanism 6, the photoelectric sensor is triggered, and the horizontal moving part drives the screw locking gun 61 to move to the top of the press-fitted parts, and the vertical moving part drives the screw locking gun 61 downward to perform the screw locking operation.

[0055] The manipulator 4 can be a conventional claw cylinder, the manipulator 4 is connected to a crossbeam, the frame 1 is provided with parallel guide rails, the guide rails are provided with sliders, the crossbeam is connected to the slider, and the frame 1 is also provided with a horizontal movement drive component for driving the manipulator 4 to reciprocate between the first station turntable 3 and the second station turntable 5, wherein the horizontal movement drive component can be a cylinder, a motor screw assembly, a motor synchronous belt assembly, etc., and it is only necessary to realize the horizontal movement of the manipulator 4.

[0056] During assembly, the workpiece (the stator base with the end cover) is first placed on the first station turntable 3, and the workpiece is transported to the bottom of the pressing piece 21 through the first station turntable 3. At this time, the pressing mechanism 2 starts the pressing operation and presses the end cover onto the stator base. Then the first station turntable 3 rotates again to transport the pressed part to the material picking position of the manipulator 4. The manipulator 4 grabs the pressed part and transports it to the second station turntable 5, and places it on the second station turntable 5. The second station turntable 5 transports the pressed part to the bottom of the screw locking mechanism 6, and screws are tightened on the pressed part through the screw locking mechanism 6. The end cover and the stator base are further fixed by screws, and then the next process can be carried out.

[0057] The present invention ensures that the loading process, the press-fitting process, the screw-on process, and the unloading process are carried out in an orderly and efficient manner through the mutual cooperation of the first station turntable 3, the second station turntable 5, and the manipulator 4, and the overall structure is more compact.

[0058] See also Figure 3 As shown, the first station turntable 3 is provided with a loading station 31, a pressing station 32, a transition station 33 and a robot grasping station 34 in sequence according to the rotation direction, and the second station turntable 5 is provided with a robot discharge station 51, a transfer station 52, a locking station 53 and a unloading station 54 in sequence according to the rotation direction.

[0059] Among them, the loading station 31 is used to place the workpiece (the stator base with the end cover), the pressing station 32 is used for pressing operations and is located directly below the pressing piece 21, the manipulator grasping station 34 is used for the manipulator 4 to grasp the press-fitted parts, the manipulator unloading station 51 is used for the manipulator 4 to place the press-fitted parts, the locking station 53 is used for the screw locking gun 61 to perform screw locking operations, and the unloading station 54 is used to remove the workpiece with the screws locked.

[0060] The present invention ensures that the loading process, the press-fitting process, the screw-on process, and the unloading process are carried out in an orderly and efficient manner through the station settings of the first station turntable 3 and the second station turntable 5, and the overall structure is more compact.

[0061] This embodiment also discloses a method for installing a motor end cover, comprising the following steps:

[0062] S10. Pressing the motor end cover: Place the end cover on the stator base and press the end cover onto the stator base through the press piece 21, then use the pneumatic hammer 22 to strike. While the pneumatic hammer 22 is striking, the press piece 21 is pressurized to press the end cover into the stator base.

[0063] Specifically, the steps include:

[0064] S11. The stator base is placed on the loading station 31, and the end cover is placed on the stator base; the turntable 3 of the first station rotates to transport the workpiece to the pressing station 32;

[0065] S12. When the booster assembly 231 is closed, the working end of the booster cylinder 23 is pressed downward, driving the pneumatic hammer 22 and the pressing member 21 downward until the pressing member 21 is pressed and fixed on the end cover;

[0066] S13. The booster assembly 231 and the pneumatic hammer 22 are started synchronously, and the pressing piece 21 and the pneumatic hammer 22 jointly press the end cover onto the stator base.

[0067] S20. The first station turntable 3 rotates, and the press-fitted molded parts are transported to the robot grabbing station 34 via the transition station 33. The robot 4 grabs the press-fitted molded parts and transfers them to the robot discharge station 51 on the second station turntable 5. Then the second station turntable 5 rotates, and the press-fitted molded parts are transferred to the locking station 53 via the transfer station 52;

[0068] S30. The horizontal moving member drives the screw locking gun 61 to move to the top of the locking station 53, and the vertical moving member drives the screw locking gun 61 downward to perform the screw locking operation;

[0069] S40. The second station turntable 5 rotates to transport the workpiece with screws to the unloading station 54.

[0070] The present invention cooperates with the boost cylinder 23, the pressure piece 21 and the pneumatic hammer 22. During press-fitting, the boost cylinder 23 first drives the pressure piece 21 to press and position the end cover. Then, the boosting operation of the boost component 231 and the striking operation of the pneumatic hammer 22 act on the end cover synchronously, so that the middle and surrounding parts of the end cover are subjected to force at the same time, avoiding problems such as displacement and damage of components caused by excessive concentration of force during the pressing process. The end cover can be knocked into the stator base steadily and accurately. The first station turntable 3, the second station turntable 5 and the manipulator 4 cooperate with each other to ensure that the loading process, the press-fitting process, the screwing process and the unloading process are carried out in an orderly and efficient manner, and the overall structure is more compact.

[0071] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A motor end cover mounting device, comprising a frame, characterized in that: The invention comprises a press-fitting mechanism for pressing the end cover into the stator base, the press-fitting mechanism comprises a press-fitting workbench, a pressing piece for positioning and pressing the end cover onto the stator base is arranged above the press-fitting workbench, a pneumatic hammer for knocking the end cover into the stator base is arranged around the pressing piece, a booster cylinder is arranged above the pressing piece, the booster cylinder comprises a working end capable of driving the pressing piece and the pneumatic hammer to rise and fall, and a booster assembly for boosting the pressing piece.

2. The motor end cover mounting device according to claim 1, characterized in that: The pressing piece is connected to the working end, and the pressing piece and the working end are arranged along the same axial direction. The pressing piece is connected to a mounting plate, and the pneumatic hammer is provided with the mounting plate.

3. The motor end cover mounting device according to claim 1, characterized in that: The boosting assembly includes a boosting cylinder and a boosting pipeline for conveying compressed gas to the boosting cylinder. The pneumatic hammer is connected to an air intake pipeline, and the boosting pipeline is in communication with the air intake pipeline.

4. The motor end cover mounting device according to claim 1, characterized in that: The pneumatic hammer is provided with a hammer head for striking the end cover, and the hammer head is connected with a counterweight block.

5. The motor end cover mounting device according to claim 4, characterized in that: The hammer head is provided with a buffer layer.

6. The motor end cover mounting device according to claim 1, characterized in that: A screw locking mechanism for locking screws between the end cover and the stator frame is provided at the downstream end of the press-fitting mechanism, a conveying mechanism is provided between the press-fitting mechanism and the screw locking mechanism, the conveying mechanism comprises a first station turntable provided on the press-fitting workbench and a second station turntable provided below the screw locking mechanism, a manipulator movable between the first station turntable and the second station turntable is provided between the first station turntable and the second station turntable.

7. The motor end cover mounting device according to claim 6, characterized in that: The first station turntable is provided with a loading station, a pressing station, a transition station and a robot grasping station in sequence according to the rotation direction, and the second station turntable is provided with a robot discharge station, a transfer station, a locking station and a unloading station in sequence according to the rotation direction.

8. A method for installing a motor end cover based on the motor end cover installation device according to any one of claims 1 to 7, characterized in that: The steps include: The end cover is placed on the stator frame and fixed to the stator frame by a pressing piece, and then a pneumatic hammer is used to knock the end cover into the stator frame.

9. The motor end cover installation method according to claim 8, characterized in that: The method also includes the following steps: while the pneumatic hammer is striking, the pressing piece is pressurized.

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