Stator and rotor coaxial assembling device

Abstract

The stator and rotor coaxial assembling device comprises an operation table, a calibration detection unit, a stator fixing unit, a rotor pushing unit and two mechanical arm sets are arranged on the operation table, the calibration detection unit and the rotor pushing unit are fixed to the two ends of the operation table respectively, and the two mechanical arm sets are arranged on the operation table. The two mechanical arm sets are arranged on the two sides of the stator fixing unit respectively, a stator module is fixedly installed in the stator fixing unit, a rotor module is placed on the rotor pushing unit, annular jacking assemblies are installed at the two ends of the rotor module through the mechanical arm sets, and an annular protection channel is placed in the rotor module. According to the invention, adjustable suspension supports are provided at the two ends of the rotor module through the annular back shore assembly, the coaxial state of the rotor module and the stator module is always maintained in the installation links of pushing the rotor module into the stator module and the subsequent end cover, and the problem of coaxial offset caused by releasing the support of the rotor module in the assembling process is avoided.

Description

Technical Field

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

[0002] The stationary portion of a motor is called the stator, on which pairs of DC-excited stationary main magnetic poles are mounted. The rotating rotor is called the armature core. In existing motor assembly systems, the lack of coaxiality between the rotor and stator significantly reduces the motor's service life and assembly efficiency.

[0003] In the prior art, a Chinese invention patent document with publication number CN108390523A has been proposed to address the above-mentioned technical problems. The technical solution disclosed in this patent document is as follows: an automatic assembly machine and method for a motor stator and rotor, the automatic assembly machine comprising a workbench, a stator center detection device, a stator adjustment device, a rotor detection device, and a rotor adjustment device; the stator sleeve is mounted on the stator center detection device to detect the stator axis position; the stator adjustment device is provided with a stator, and the stator adjustment device is capable of moving and rotating the stator; the rotor detection device is provided at both ends of the rotor to detect the axis position of both ends of the rotor, and the rotor adjustment device moves the position of one or both ends of the rotor. This invention ensures the coaxial assembly of the stator and rotor, prevents mutual friction between the stator and rotor, and reduces safety hazards to the product and labor.

[0004] According to the technical solutions proposed in the above-mentioned invention patent documents, it can be seen that the above-mentioned solutions still have obvious shortcomings. For example, when assembling the rotor using the above-mentioned solution, it is necessary to fix the two ends of the rotor and suspend the rotor in the air. Although the friction during assembly of the rotor and the stator can be reduced, the fact that the two ends of the rotor are fixed and suspended will affect the subsequent assembly steps of the motor. Specifically, after placing the rotor in the stator, end covers need to be installed on the front and rear ends of the stator respectively, and the rotor is mounted in the stator through the end covers. After adopting the above-mentioned technical solution, the two ends of the rotor are restricted and obstructed by the fixing device, and the end covers cannot be inserted from the two ends of the rotor unless the restrictions on the two ends of the rotor are released. After the restrictions on the two ends of the rotor are released, the rotor will be pulled down by gravity to a state of being in contact with the inner wall of the stator, thereby causing the rotor and the stator to lose their coaxial state. After the end covers are installed on both ends of the rotor, the rotor needs to be readjusted to a coaxial state with the stator, which is not only time-consuming and labor-intensive, but after the restrictions on the two ends of the rotor are released, the rotor rubs against the inner wall of the stator, which may cause loss and reduce the service life of the motor. Therefore, the existing technology urgently needs a technical solution to solve the above-mentioned problems. Summary of the Invention

[0005] The object of the present invention is to provide a stator-rotor coaxial assembly device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A stator-rotor coaxial assembly device comprises an operating table, on which a calibration detection unit, a stator fixing unit, a rotor pushing unit and a robotic arm group are provided. The calibration detection unit and the rotor pushing unit are respectively fixedly arranged at two ends of the operating table. The stator fixing unit is located between the calibration detection unit and the rotor pushing unit. There are two robotic arm groups, and the two groups of robotic arm groups are respectively arranged on both sides of the stator fixing unit. A stator module is fixedly installed in the stator fixing unit, a rotor module is placed on the rotor pushing unit, annular top support assemblies are installed at both ends of the rotor module through the robotic arm group, and an annular protective channel for protecting the inner wall of the stator module is placed in the rotor module.

[0007] A further improvement of the technical solution of the present invention is that: the annular support assembly includes an annular cylinder sleeved on the end of the rotor module, the annular cylinder is composed of two semicircular cylinders spliced ​​together, a plurality of sealed cavities are provided in the semicircular cylinder, the side wall of the semicircular cylinder is provided with a plurality of air nozzles connected to the sealed cavities, and a sealing plate is slidably installed in the multiple sealed cavities, the top of the sealing plate is fixedly connected to an extension rod, the top of the extension rod is rotatably connected to a roller, the outside of the extension rod is fixedly connected to a ranging sensor, and the side wall of the semicircular cylinder is fixedly connected to a hinged ear.

[0008] A further improvement of the technical solution of the present invention is that: the annular protective channel includes an annular mounting plate that is in contact with the side wall of the stator module, an annular synchronization plate is rotatably installed in the side wall of the annular mounting plate, a plurality of long slide grooves are provided in the annular mounting plate, a plurality of oblique slide grooves are provided in the annular synchronization plate, a plurality of extension strips are slidably installed in the annular mounting plate, a slide rod is fixedly installed at one end of the extension strip, and an arc-shaped protective plate is fixedly connected to the other end of the extension strip away from the annular mounting plate, and the two ends of the slide rod are respectively slidably installed in the long slide groove and the oblique slide groove.

[0009] A further improvement of the technical solution of the present invention is that a vertical rod is fixedly installed in the long slide groove, a spring is sleeved on the outside of the vertical rod, and two ends of the spring respectively press against the inner wall of the long slide groove and the outer wall of the slide rod.

[0010] A further improvement of the technical solution of the present invention is that the calibration detection unit includes a CNC box fixedly mounted on the operating table, a laser emitter is fixedly mounted on the top of the CNC box, and an industrial camera is fixedly mounted on the top of the laser emitter.

[0011] A further improvement of the technical solution of the present invention is that the stator fixing unit includes a first lifting platform fixedly mounted on the operating table, a positioning base is fixedly mounted on the top of the first lifting platform, and the positioning base is used to adjust and fix the stator module.

[0012] A further improvement of the technical solution of the present invention is that the rotor pushing unit includes a movable slide fixedly mounted on the operating table, a second lifting platform is fixedly mounted on the top of the movable slide, and a placement seat for placing the rotor module is fixedly mounted on the top of the second lifting platform.

[0013] A further improvement of the technical solution of the present invention is that the robotic arm group includes two robotic arms, the two robotic arms are relatively distributed on one side of the stator fixing unit, and the two robotic arms are quickly hinged to the semicircular cylinder through hinge ears.

[0014] A further improvement of the technical solution of the present invention is that: the butt joint side surfaces of the two semicircular cylinders are both formed with connecting flat keys, and the butt joint side surfaces of the two semicircular cylinders are both provided with accommodating grooves for accommodating the connecting flat keys.

[0015] Due to the adoption of the above technical solution, the present invention has the following technical advancements compared to the prior art: 1. The present invention provides adjustable suspension support at both ends of the rotor module through an annular top support assembly. During the process of pushing the rotor module into the stator module and the subsequent installation of the end cover, the coaxial state of the rotor module and the stator module is always maintained, avoiding the coaxial deviation problem caused by removing the support of the rotor module during assembly; 2. The present invention introduces an annular protective channel structure, which automatically expands and fits against the inner wall of the stator module when the rotor module is pushed into the stator module, forming a physical isolation layer that directly blocks contact between the rotor module and the stator module, significantly reducing the risk of friction loss during assembly. 3. The present invention utilizes a design of disassembling and assembling the annular top support assembly in steps, allowing the robotic arm to directly install the end cover to the predetermined position while keeping the rotor module suspended and coaxial, eliminating the need for repeated adjustment of the rotor position in traditional processes, thereby improving the overall assembly efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Schematic diagram from another perspective; Figure 3 for Figure 1 Schematic diagram of the structure without the stator module; Figure 4 Schematic diagram of the three-dimensional structure of the annular protection channel in the present invention; Figure 5 for Figure 4 A is an enlarged schematic diagram; Figure 6 Schematic diagram of the three-dimensional structure of the annular top support assembly in the present invention; Figure 7 for Figure 6 Front cross-sectional view of Figure 8 It is a schematic diagram of the three-dimensional structure of the semicircular cylinder in the present invention.

[0018] In the figure: 1. Operating table; 2. Robot arm group; 3. Stator module; 4. Rotor module; 5. Annular cylinder; 6. Semicircular cylinder; 7. Sealing cavity; 8. Air nozzle; 9. Sealing plate; 10. Extension rod; 11. Roller; 12. Distance sensor; 13. Articulated ear; 14. Annular mounting plate; 15. Annular synchronization plate; 16. Long slide; 17. Oblique slide; 18. Extension strip; 19. Slide rod; 20. Arc protection plate; 21. Spring; 22. CNC box; 23. Laser transmitter; 24. Industrial camera; 25. First lifting platform; 26. Positioning base; 27. Moving slide; 28. Second lifting platform; 29. ​​Placement seat; 30. Connecting flat key; 31. Receiving groove. DETAILED DESCRIPTION

[0019] 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.

[0020] The following first describes the concepts involved in this application with reference to the accompanying drawings. It should be noted that the following description of each concept is intended only to make the content of this application easier to understand and does not limit the scope of protection of this application. At the same time, the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The following detailed description of this application will be made with reference to the accompanying drawings and in conjunction with the embodiments.

[0021] Example: like Figures 1 to 8As shown, the present invention provides a stator-rotor coaxial assembly device, comprising an operating platform 1, on which a calibration detection unit, a stator fixing unit, a rotor pushing unit and a robotic arm group 2 are provided. The calibration detection unit and the rotor pushing unit are respectively fixedly arranged at both ends of the operating platform 1, and the stator fixing unit is located between the calibration detection unit and the rotor pushing unit. There are two groups of robotic arm groups 2, and the two groups of robotic arm groups 2 are respectively arranged on both sides of the stator fixing unit. A stator module 3 is fixedly installed in the stator fixing unit, a rotor module 4 is placed on the rotor pushing unit, annular top support assemblies are installed at both ends of the rotor module 4 through the robotic arm group 2, and an annular protective channel for protecting the inner wall of the stator module 3 is placed in the rotor module 4.

[0022] As a further explanation of this embodiment, in this embodiment, the stator module 3 is placed on the stator fixing unit, the posture of the stator module 3 is adjusted by the stator fixing unit, and the stator module 3 is adjusted to the center point set by the calibration and detection unit. At the same time, the rotor pushing unit is adjusted to a position away from the stator module 3, and the rotor module 4 is placed on the rotor pushing unit so that the horizontal height of the rotor module 4 is slightly lower than the passage inside the stator module 3. The reason for lowering the horizontal height of the rotor module 4 is to quickly detach the rotor pushing unit after the stator module 3 is suspended. The annular protective channel is placed into the stator module 3 from the end of the stator module 3 away from the calibration and detection unit through the robotic arm group 2, and then the annular top support assembly is installed on the end of the rotor module 4 through the robotic arm group 2 and fits the iron core of the rotor module 4, and then the assembly operation of the stator and rotor can begin.

[0023] When the annular supporting assembly at the end of the rotor module 4 enters from the end of the stator module 3, the annular supporting assembly is started to support the annular protection channel, so that the annular protection channel opens and fits the inner wall of the stator module 3. The reaction force generated by the annular supporting assembly in the process of supporting the annular protection channel supports the rotor module 4, so that the rotor module 4 and the stator module 3 gradually become coaxial, and the rotor module 4 is suspended after it is separated from the rotor pushing unit. At this time, the horizontal position and height of the rotor pushing unit are adjusted so that the rotor pushing unit fits the end of the rotor module 4, and the rotor module 4 is pushed into the stator module 3. Before the rotor module 4 is about to be completely inserted into the interior of the stator module 3, another annular supporting assembly (in this embodiment, in order to facilitate the distinction between the two annular supporting assemblies, the annular supporting assembly installed first will be referred to as the first annular supporting assembly, and the later installed one will be the second annular supporting assembly) is installed at the end of the rotor module 4 through the robotic arm group 2 and the annular supporting assembly is started.

[0024] After the rotor module 4 and the stator module 3 are assembled, the motor end cover is sleeved on one end of the rotor module 4, and the first annular support assembly at the end of the rotor module 4 is taken out by the robotic arm group 2 close to the calibration and detection unit. At this time, the rotor module 4 is still maintained in a suspended state coaxial with the stator module 3 through the support of the second annular support assembly, and then the motor end cover is pushed to the end of the stator module 3 by the robotic arm group 2. After the motor end cover and the stator module 3 are fixedly connected, the motor end cover can support the rotor module 4. At this time, the second annular support assembly and the annular protection channel are taken out from the stator module 3 by the robotic arm group 2, and the subsequent accessory assembly process can be started. During the assembly process of the stator module 3 and the rotor module 4, the calibration and detection unit is used to verify whether the stator module 3 and the rotor module 4 are in a coaxial state, so as to avoid excessive opening of the annular support assembly and damage to the inner wall of the stator module 3.

[0025] As a preferred solution provided by a stator-rotor coaxial assembly device, the annular support assembly includes an annular cylinder 5 sleeved on the end of the rotor module 4, the annular cylinder 5 is composed of two semicircular cylinders 6 spliced ​​together, a plurality of sealed cavities 7 are provided in the semicircular cylinder 6, and a plurality of air nozzles 8 connected to the sealed cavities 7 are opened on the side wall of the semicircular cylinder 6, and a sealing plate 9 is slidably installed in the multiple sealed cavities 7, the top of the sealing plate 9 is fixedly connected to an extension rod 10, the top of the extension rod 10 is rotatably connected to a roller 11, the outside of the extension rod 10 is fixedly connected to a distance sensor 12, and the side wall of the semicircular cylinder 6 is fixedly connected to a hinged ear 13.

[0026] As a further explanation of this embodiment, in this embodiment, multiple extension rods 10 in the annular cylinder 5 composed of two semicircular cylinders 6 are arranged at equal intervals, that is, multiple rollers 11 are distributed at equal intervals along the circumferential direction of the annular cylinder 5, so that the annular cylinder 5 is evenly stressed when the multiple rollers 11 push outward. In addition, the sealing plate 9 is controlled to slide in the sealing cavity 7 through an external driving device (the same driving principle as the cylinder) through the air nozzle 8, thereby controlling the extension and contraction amount of the extension rod 10. The distance between the roller 11 and the inner wall of the annular protection channel is detected by multiple distance measuring sensors 12, thereby calculating whether the entire rotor module 4 is tilted. If the data measured by a certain distance measuring sensor 12 is different from the data measured by other distance measuring sensors 12, the extension and contraction amount of the single extension rod 10 is controlled so that the rotor maintains a coaxial suspension state with the stator when it is inside the stator.

[0027] As a preferred solution provided by a stator-rotor coaxial assembly device, the annular protective channel includes an annular mounting plate 14 that is fitted with the side wall of the stator module 3, an annular synchronous plate 15 is rotatably installed in the side wall of the annular mounting plate 14, a plurality of long slide grooves 16 are opened in the annular mounting plate 14, a plurality of oblique slide grooves 17 are opened in the annular synchronous plate 15, a plurality of extension strips 18 are slidably installed in the annular mounting plate 14, one end of the extension strip 18 is fixedly installed with a slide rod 19, the other end of the extension strip 18 away from the annular mounting plate 14 is fixedly connected to an arc-shaped protective plate 20, and the two ends of the slide rod 19 are respectively slidably installed in the long slide groove 16 and the oblique slide groove 17 As a further explanation of this embodiment, in this embodiment, a plurality of extension bars 18 are provided in the annular synchronization plate 15. Specifically, when any one of the extension bars 18 slides, the slide bar 19 at the end of the extension bar 18 slides along the preset direction of the long strip slide groove 16, and the other end of the slide bar 19 is in the oblique slide groove 17, and then the annular synchronization plate 15 is driven to rotate in the annular mounting plate 14 through the oblique slide groove 17. While the annular synchronization plate 15 rotates, the oblique slide groove 17 drives the remaining multiple extension bars 18 to slide along the preset direction of the long strip slide groove 16, thereby realizing the synchronous sliding of multiple extension bars 18.

[0028] Therefore, when any one of the arc-shaped protective plates 20 is resisted by the roller 11 and expands outward, the other arc-shaped protective plates 20 expand outward at the same time, which not only accelerates the formation of the annular protective channel, but also the synchronous opening amount of the multiple arc-shaped protective plates 20 is adapted to the outward extension amount of the multiple rollers 11, so that while the annular support assembly supports the annular protective channel, the annular support assembly is resisted by the multiple arc-shaped protective plates 20, and then the annular support assembly and the annular protective channel are gradually coaxially arranged until the multiple arc-shaped protective plates 20 gradually support the inner wall of the stator module 3 and cannot continue to expand, and the maximum opening amount of the annular protective channel is reached, skipping the process of adjusting the rotor module 4 to a coaxial state with the stator module 3 before starting the assembly operation, effectively improving the assembly efficiency of the stator module 3 and the rotor module 4.

[0029] In this embodiment, in order to prevent the outer wall of the annular protection channel from squeezing the inner wall of the stator module 3 and causing damage, rubber pads are installed on the outer walls of multiple arc-shaped protection plates 20 for protection. It can also increase the friction between the arc-shaped protection plates 20 and the inner wall of the stator module 3, thereby preventing the annular protection channel from sliding inside the stator module 3. The diameter of the annular mounting plate 14 is larger than the passage inside the stator module 3. When the annular mounting plate 14 is in contact with the end of the stator module 3, the maximum stroke of the annular protection channel extending into the interior of the stator module 3 is reached.

[0030] As a preferred solution provided by a stator-rotor coaxial assembly device, a vertical rod is fixedly installed in the long slide groove 16, and a spring 21 is sleeved on the outside of the vertical rod. The two ends of the spring 21 respectively press against the inner wall of the long slide groove 16 and the outer wall of the slide rod 19.

[0031] As a further explanation of this embodiment, in this embodiment, the smaller the initial maximum outer diameter of the annular protection channel, the lower the possibility of the annular protection channel rubbing against the inner wall of the stator module 3 during the process of extending into the interior of the stator module 3. Therefore, the annular protection channel should remain in a closed state when not expanded. In this embodiment, a spring 21 is added to resist the vertical rod. The elastic force of the spring 21 resists the vertical rod, and the multiple arc-shaped protection plates 20 are brought closer to the axis of the annular mounting plate 14, so that the multiple arc-shaped protection plates 20 are in a closed state, which is convenient for entering the stator module 3.

[0032] As a preferred solution provided by a stator-rotor coaxial assembly device, the calibration and detection unit includes a CNC box 22 fixedly mounted on the operating table 1, a laser emitter 23 fixedly mounted on the top of the CNC box 22, and an industrial camera 24 fixedly mounted on the top of the laser emitter 23. The CNC box 22 is used to connect and control all circuits within the calibration and detection unit, the stator fixing unit, the rotor pushing unit and the robotic arm group 2.

[0033] As a further illustration of this embodiment, in this embodiment, the laser emitter 23 emits a cross-positioning laser mark to provide a coaxial marking point for the stator module 3 and the rotor module 4 during assembly. The industrial camera 24 captures the landing point of the cross-positioning laser on the stator module 3 to determine and adjust the position of the stator module 3. After the stator module 3 and the rotor module 4 are assembled, the cross-positioning laser mark is activated again to confirm the assembly completion, thereby improving the assembly accuracy of the stator module 3 and the rotor module 4. In this embodiment, the CNC box 22 is a general term for integrated circuits and control modules in conventional prior art. The CNC box 22 is used to collect data signals uploaded by each component and issue appropriate instructions so that the various components of the device can perform their respective work functions in an orderly manner.

[0034] As a preferred solution provided by a stator-rotor coaxial assembly device, the stator fixing unit includes a first lifting platform 25 fixedly mounted on the operating platform 1 , and a positioning base 26 is fixedly mounted on the top of the first lifting platform 25 , and the positioning base 26 is used to adjust and fix the stator module 3 .

[0035] As a preferred solution provided as a stator-rotor coaxial assembly device, the rotor pushing unit includes a movable slide 27 fixedly mounted on the operating platform 1, a second lifting platform 28 fixedly mounted on the top of the movable slide 27, and a placement seat 29 for placing the rotor module 4 fixedly mounted on the top of the second lifting platform 28.

[0036] As a preferred solution provided by a stator-rotor coaxial assembly device, the robotic arm group 2 includes two robotic arms, which are relatively distributed on one side of the stator fixing unit and are quickly hinged to the semicircular cylinder 6 through the hinge ears 13.

[0037] As a further explanation of this embodiment, in this embodiment, the robotic arm and the articulated ear 13 can be quickly articulated or un-articulated in a variety of ways, such as electromagnetic adsorption, snap fastening, etc. Since there are many ways to quickly connect and disassemble the robotic arm and the articulated ear 13, and it does not affect the overall operation process of the device, they will not be elaborated here.

[0038] As a preferred solution provided by a stator-rotor coaxial assembly device, the butting sides of the two semicircular cylinders 6 are both formed with connecting flat keys 30 , and the butting sides of the two semicircular cylinders 6 are both provided with accommodating grooves 31 for accommodating the connecting flat keys 30 .

[0039] As a further explanation of this embodiment, in this embodiment, a receiving groove 31 is provided on the side of the two semicircular cylinders 6. When the two semicircular cylinders 6 are docked, the connecting flat keys 30 of the two semicircular cylinders 6 are respectively inserted into the receiving groove 31 of each other, thereby improving the stability of the two semicircular cylinders 6 when connected. When the semicircular cylinders 6 need to be disassembled, the connection state of the two semicircular cylinders 6 can be released by pulling out any one of the semicircular cylinders 6 along the connecting flat key 30.

[0040] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and do not impose any form of limitation on the implementation methods of the technology of the present invention. Any person skilled in the art may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0041] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A stator-rotor coaxial assembly device, comprising an operating table (1), characterized in that: The operating table (1) is provided with a calibration detection unit, a stator fixing unit, a rotor pushing unit and a mechanical arm group (2), the calibration detection unit and the rotor pushing unit are respectively fixedly arranged at two ends of the operating table (1), the stator fixing unit is located between the calibration detection unit and the rotor pushing unit, there are two mechanical arm groups (2), and the two groups of mechanical arm groups (2) are respectively arranged on both sides of the stator fixing unit, a stator module (3) is fixedly installed in the stator fixing unit, a rotor module (4) is placed on the rotor pushing unit, an annular support assembly is installed at both ends of the rotor module (4) through the mechanical arm group (2), and an annular protective channel for protecting the inner wall of the stator module (3) is placed in the rotor module (4); The annular supporting assembly comprises an annular cylinder (5) sleeved on the end of the rotor module (4), the annular cylinder (5) is composed of two semicircular cylinders (6) spliced ​​together, a plurality of sealed cavities (7) are provided in the semicircular cylinder (6), a plurality of air nozzles (8) in communication with the sealed cavities (7) are opened on the side wall of the semicircular cylinder (6), a sealing plate (9) is slidably installed in each of the plurality of sealed cavities (7), the top of the sealing plate (9) is fixedly connected to an extension rod (10), the top of the extension rod (10) is rotatably connected to a roller (11), the outside of the extension rod (10) is fixedly connected to a distance sensor (12), and the side wall of the semicircular cylinder (6) is fixedly connected to a hinged ear (13).

2. The stator-rotor coaxial assembly device according to claim 1, characterized in that: The annular protection channel includes an annular mounting plate (14) that is fitted with a side wall of the stator module (3), an annular synchronization plate (15) is rotatably mounted in the side wall of the annular mounting plate (14), a plurality of long slide grooves (16) are provided in the annular mounting plate (14), a plurality of oblique slide grooves (17) are provided in the annular synchronization plate (15), a plurality of extension bars (18) are slidably mounted in the annular mounting plate (14), a slide bar (19) is fixedly mounted at one end of the extension bar (18), and an arc-shaped protection plate (20) is fixedly connected to the other end of the extension bar (18) away from the annular mounting plate (14), and the two ends of the slide bar (19) are slidably mounted in the long slide groove (16) and the oblique slide groove (17), respectively.

3. The stator-rotor coaxial assembly device according to claim 2, characterized in that: A vertical rod is fixedly installed in the long chute (16), and a spring (21) is sleeved on the outside of the vertical rod. The two ends of the spring (21) respectively press against the inner wall of the long chute (16) and the outer wall of the slide rod (19).

4. The stator-rotor coaxial assembly device according to claim 1, characterized in that: The calibration detection unit comprises a numerical control box (22) fixedly mounted on an operating table (1), a laser emitter (23) fixedly mounted on the top of the numerical control box (22), and an industrial camera (24) fixedly mounted on the top of the laser emitter (23).

5. The stator-rotor coaxial assembly device according to claim 1, characterized in that: The stator fixing unit comprises a first lifting platform (25) fixedly mounted on the operating table (1), a positioning base (26) being fixedly mounted on the top of the first lifting platform (25), and the positioning base (26) being used to adjust and fix the stator module (3).

6. The stator-rotor coaxial assembly device according to claim 1, characterized in that: The rotor pushing unit comprises a movable slide (27) fixedly mounted on an operating table (1), a second lifting platform (28) fixedly mounted on the top of the movable slide (27), and a placement seat (29) for placing the rotor module (4) fixedly mounted on the top of the second lifting platform (28).

7. The stator-rotor coaxial assembly device according to claim 1, characterized in that: The robotic arm group (2) comprises two robotic arms, the two robotic arms are relatively distributed on one side of the stator fixing unit, and the two robotic arms are quickly hinged to the semicircular cylinder (6) via hinge ears (13).

8. The stator-rotor coaxial assembly device according to claim 1, characterized in that: The butting sides of the two semicircular cylinders (6) are both formed with connecting flat keys (30), and the butting sides of the two semicircular cylinders (6) are both provided with accommodating grooves (31) for accommodating the connecting flat keys (30).

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