Stator-rotor coaxial assembly device

Abstract

The application discloses a kind of stator rotor coaxial assembly device, including operation platform, calibration detection unit is equipped on operation platform, stator fixed unit, rotor push unit and mechanical arm group, calibration detection unit and rotor push unit are respectively fixed at the both ends of operation platform, mechanical arm group has two groups in common, and two groups of mechanical arm group are respectively arranged at the both sides of stator fixed unit, stator module is fixedly installed in stator fixed unit, rotor module is placed on rotor push unit, and annular top bracing assembly is installed at the both ends of rotor module by mechanical arm group, annular protection channel is placed in rotor module.The adjustable suspension support is provided in the both ends of rotor module by annular top bracing assembly, the coaxial state of rotor module and stator module is always maintained in the installation link of rotor module push into stator module and subsequent end cover, and the coaxial deviation problem caused by removing the support of rotor module in the middle of assembly is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor assembly, in particular to a stator-rotor coaxial assembly device. BACKGROUND

[0002] The fixed part in the motor is called stator, and the rotating part rotor is called armature core. In the existing motor assembly system, the problem that the rotor and the stator are not coaxial greatly reduces the service life and assembly efficiency of the motor.

[0003] In the prior art, a Chinese patent application with the publication number CN108390523A is proposed to solve the above technical problems. The technical solution disclosed in the patent document is as follows: a motor stator-rotor automatic assembly machine and an automatic assembly method, the automatic assembly machine includes a workbench, a stator center detection device, a stator adjusting device, a rotor detection device and a rotor adjusting device; the stator is sleeved on the stator center detection device to detect the axial position of the stator, and the stator adjusting device is provided with the stator and can move and rotate the stator; the rotor detection device is arranged at both ends of the rotor to detect the axial position of both ends of the rotor, and the rotor adjusting device moves the position of one end or both ends of the rotor. The invention can ensure the coaxial assembly of the stator and the rotor, prevent the stator and the rotor from rubbing each other, and reduce the safety hazards of the product and the manual work.

[0004] It can be seen from the technical solution of the above-mentioned patent application that the above-mentioned scheme still has obvious deficiencies. For example, when assembling the rotor by using the above-mentioned scheme, the two ends of the rotor need to be fixed to suspend the rotor, which can reduce the friction between the rotor and the stator during assembly, but the two ends of the rotor are fixed and suspended, which will affect the subsequent assembly steps of the motor. Specifically, after the rotor is placed in the stator, end covers need to be installed at the front and rear ends of the stator, and the rotor is supported in the stator through the end covers. However, after using the above technical solution, the two ends of the rotor are limited and hindered by the fixing device, and the end covers cannot be inserted from the two ends of the rotor. Unless the restriction of the two ends of the rotor is removed, the rotor will fall to the state of being attached to the inner wall of the stator due to the gravity, resulting in the loss of the coaxial state of the rotor and the stator. After the end covers are installed at both ends of the rotor, the rotor needs to be adjusted to the coaxial state with the stator again, which is time-consuming and laborious. In addition, after the restriction of the two ends of the rotor is removed, the rotor may be damaged by rubbing against the inner wall of the stator, which reduces the service life of the motor. Therefore, the existing technology needs a technical solution to solve the above problems. SUMMARY

[0005] The present application aims to provide a stator-rotor coaxial assembly device to solve the problems raised in the background art.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is:

[0007] A stator-rotor coaxial assembly device, comprising an operation table, wherein a calibration detection unit, a stator fixing unit, a rotor pushing unit and a mechanical arm group are arranged on the operation table, the calibration detection unit and the rotor pushing unit are fixedly arranged at two ends of the operation table respectively, the stator fixing unit is located between the calibration detection unit and the rotor pushing unit, the mechanical arm group comprises two groups, and the two groups of mechanical arm groups 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 top support assemblies are installed on the two ends of the rotor module through the mechanical arm group, and an annular protection channel for protecting the inner wall of the stator module is arranged in the rotor module.

[0008] Further improvement of the technical scheme of the present application is that the annular top support assembly comprises an annular air cylinder sleeved on the end of the rotor module, the annular air cylinder is composed of two semicircular air cylinders, a plurality of sealed cavities are arranged in the semicircular air cylinder, a plurality of air nozzles in communication with the sealed cavities are formed in the side wall of the semicircular air cylinder, a sealing plate is slidably installed in each of the sealed cavities, an extension rod is fixedly connected to the top of the sealing plate, a roller is rotatably connected to the top of the extension rod, a distance measuring sensor is fixedly connected to the outer portion of the extension rod, and a hinged lug is fixedly connected to the side wall of the semicircular air cylinder.

[0009] Further improvement of the technical scheme of the present application is that the annular protection channel comprises an annular mounting plate abutting the side wall of the stator module, an annular synchronous plate is rotatably installed in the side wall of the annular mounting plate, a plurality of long slot grooves are formed in the annular mounting plate, a plurality of inclined slot grooves are formed in the annular synchronous 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, an arc-shaped protection 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 slidably installed in the long slot groove and the inclined slot groove respectively.

[0010] Further improvement of the technical scheme of the present application is that a vertical rod is fixedly installed in the long slot groove, and a spring is sleeved outside the vertical rod, and the two ends of the spring are tightly abutted against the inner wall of the long slot groove and the outer wall of the slide rod respectively.

[0011] Further improvement of the technical scheme of the present application is that the calibration detection unit comprises a numerical control box fixedly installed on the operation table, a laser emitter is fixedly installed on the top of the numerical control box, and an industrial camera is fixedly installed on the top of the laser emitter.

[0012] Further improvement of the technical scheme of the present application is that the stator fixing unit comprises a first lifting platform fixedly installed on the operation table, and a positioning base is fixedly installed on the top of the first lifting platform, and the positioning base is used for adjusting and fixing the stator module.

[0013] Further improvement of the technical scheme of the present application is that the rotor pushing unit comprises a moving sliding table fixedly installed on the operation table, a second lifting platform is fixedly installed on the top of the moving sliding table, and a placing seat for placing the rotor module is fixedly installed on the top of the second lifting platform.

[0014] Further improvement of the technical scheme of the present application is that the mechanical arm group comprises two mechanical arms, the two mechanical arms are oppositely distributed on one side of the stator fixing unit, and the two mechanical arms are quickly hinged with the semicircular air cylinders through hinged ears.

[0015] Further improvement of the technical scheme of the present application is that the butt joint side surfaces of the two semicircular air cylinders are formed with connecting flat keys, and the butt joint side surfaces of the two semicircular air cylinders are provided with accommodating grooves for accommodating the connecting flat keys.

[0016] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art:

[0017] 1. The present application provides adjustable suspension support at both ends of the rotor module through the annular top support assembly, and the coaxial state of the rotor module and the stator module is maintained during the process of pushing the rotor module into the stator module and the subsequent installation of the end cover, thereby avoiding the coaxial deviation problem caused by the removal of the support of the rotor module during assembly.

[0018] 2. The present application introduces the annular protection channel structure, which automatically expands and adheres to the inner wall of the stator module when the rotor module is pushed into the stator module, thereby forming a physical isolation layer and directly blocking the contact between the rotor module and the stator module, thereby significantly reducing the friction loss risk during assembly.

[0019] 3. The present application utilizes the design of step-by-step disassembly of the annular top support assembly to allow the mechanical arm to directly install the end cover to the predetermined position while maintaining the state of the suspended coaxial rotor module, thereby eliminating the need for repeated adjustment of the rotor position in the traditional process and improving the overall assembly efficiency of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only exemplary, and other implementation drawings can be obtained from the provided drawings without creative labor for those skilled in the art.

[0021] Figure 1 The overall structure of the present application is shown schematically;

[0022] Figure 2 The overall structure of the present application is shown schematically; Figure 1 Another perspective view is shown schematically;

[0023] Figure 3 The overall structure of the present application is shown schematically; Figure 1 The structure of the stator module is shown schematically;

[0024] Figure 4 The overall structure of the present application is shown schematically;

[0025] Figure 5 The overall structure of the present application is shown schematically; Figure 4 An enlarged view of A is shown schematically;

[0026] Figure 6 The overall structure of the present application is shown schematically;

[0027] Figure 7 The overall structure of the present application is shown schematically; Figure 6 The front view is shown schematically;

[0028] Figure 8 The overall structure of the present application is shown schematically.

[0029] In the figure: 1, operation table; 2, mechanical arm group; 3, stator module; 4, rotor module; 5, ring-shaped air cylinder; 6, semi-circular air cylinder; 7, sealed cavity; 8, air nozzle; 9, sealing plate; 10, extension rod; 11, roller; 12, distance measuring sensor; 13, hinged lug; 14, ring-shaped mounting plate; 15, ring-shaped synchronous plate; 16, long strip sliding groove; 17, oblique sliding groove; 18, extension strip; 19, sliding rod; 20, arc-shaped protective plate; 21, spring; 22, numerical control box; 23, laser emitter; 24, industrial camera; 25, first lifting table; 26, positioning base; 27, moving sliding table; 28, second lifting table; 29, placing seat; 30, connecting flat key; 31, containing groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] Example:

[0033] like Figures 1 to 8 As shown, the present invention provides a stator-rotor coaxial assembly device, including an operating table 1. The operating table 1 is provided with a calibration and testing unit, a stator fixing unit, a rotor pushing unit, and a robotic arm group 2. The calibration and testing unit and the rotor pushing unit are respectively fixedly arranged at both ends of the operating table 1. The stator fixing unit is located between the calibration and testing unit and the rotor pushing unit. There are two sets of robotic arms 2, and the two sets of robotic arms 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. An annular protective channel for protecting the inner wall of the stator module 3 is placed inside the rotor module 4.

[0034] As a further explanation of this embodiment, in this embodiment, the stator module 3 is placed on the stator fixing unit, and the attitude of the stator module 3 is adjusted by the stator fixing unit to adjust the stator module 3 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 allow the stator module 3 to detach from the rotor pushing unit more quickly after it is suspended. The annular protective channel is inserted into the stator module 3 from the end away from the calibration and detection unit by the robotic arm group 2. Then, the annular top support assembly is installed at the end of the rotor module 4 and attached to the iron core of the rotor module 4 by the robotic arm group 2, and the assembly operation of the stator and rotor can begin.

[0035] When the annular top support assembly at the end of the rotor module 4 enters from the end of the stator module 3, the annular top support assembly supports the annular protective channel, the annular protective channel is expanded and adheres to the inner wall of the stator module 3, and the reaction force generated by the annular top support assembly in the process of supporting the annular protective 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 in a suspended state after being separated from the rotor pushing unit. At this time, the horizontal position and height of the rotor pushing unit are adjusted, the rotor pushing unit adheres to the end of the rotor module 4, the rotor module 4 is pushed into the stator module 3, and before the rotor module 4 is about to complete the extension into the stator module 3, another annular top support assembly (in this embodiment, in order to distinguish between the two annular top support assemblies, the first annular top support assembly is referred to as the first annular top support assembly, and the second annular top support assembly is referred to as the second annular top support assembly) is installed at the end of the rotor module 4 by the mechanical arm group 2 and the annular top support assembly is started.

[0036] After the rotor module 4 and the stator module 3 are assembled, the motor end cover is sleeved at one end of the rotor module 4, the first annular top support assembly at the end of the rotor module 4 is taken out by the mechanical arm group 2 close to the calibration detection unit, at this time, the rotor module 4 still maintains a coaxial suspended state through the support of the second annular top support assembly, the motor end cover is pushed to the end of the stator module 3 by the mechanical arm group 2, the motor end cover and the stator module 3 are fixedly connected, and then the motor end cover can support the rotor module 4. At this time, the second annular top support assembly and the annular protective channel are taken out from the stator module 3 by the mechanical arm group 2, and the subsequent accessory assembly operation process can be started. In the assembly process of the stator module 3 and the rotor module 4, whether the stator module 3 and the rotor module 4 are in a coaxial state is verified by the calibration detection unit, so that damage to the inner wall of the stator module 3 caused by excessive expansion of the annular top support assembly can be avoided.

[0037] As a preferred scheme of the stator-rotor coaxial assembly device, the annular top support assembly comprises an annular cylinder 5 sleeved at the end of the rotor module 4, the annular cylinder 5 is composed of two semicircular cylinders 6, a plurality of sealed cavities 7 are arranged in the semicircular cylinder 6, a plurality of air outlets 8 are arranged in the side wall of the semicircular cylinder 6 and communicated with the sealed cavities 7, a sealing plate 9 is slidably arranged in each of the sealed cavities 7, an extension rod 10 is fixedly connected to the top of the sealing plate 9, a roller 11 is rotatably connected to the top of the extension rod 10, a distance measuring sensor 12 is fixedly connected to the outer portion of the extension rod 10, and a hinged lug 13 is fixedly connected to the side wall of the semicircular cylinder 6.

[0038] As a further illustration of the present embodiment, in the present embodiment, the plurality of extension rods 10 in the annular cylinder 5 composed of two semicircular cylinders 6 are equidistantly arranged, that is, the plurality of rollers 11 are equidistantly distributed along the circumferential direction of the annular cylinder 5, so that when the plurality of rollers 11 are outwardly supported, the annular cylinder 5 is uniformly stressed, in addition, the sealing plate 9 is controlled to slide in the sealing cavity 7 by the external driving device (the same as the driving principle of the cylinder) of the air nozzle 8, thereby controlling the extension amount of the extension rod 10, the distance between the roller 11 and the inner wall of the annular protection channel is detected by the plurality of distance measuring sensors 12, and whether the entire rotor module 4 is tilted is calculated, if the data measured by a distance measuring sensor 12 is different from the data of other distance measuring sensors 12, the extension amount of the single extension rod 10 is controlled, so that the rotor is in a coaxial suspension state with the stator when it is inside the stator.

[0039] As a preferred scheme provided by a stator-rotor coaxial assembly device, the annular protection channel comprises an annular mounting plate 14 attached to 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 slot grooves 16 are formed in the annular mounting plate 14, a plurality of inclined slot grooves 17 are formed in the annular synchronous plate 15, a plurality of extension bars 18 are slidably installed in the annular mounting plate 14, a slide rod 19 is fixedly installed 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

[0040] As a further illustration of the present embodiment, in the present embodiment, the plurality of extension rods 10 in the annular cylinder 5 composed of two semicircular cylinders 6 are equidistantly arranged, that is, the plurality of rollers 11 are equidistantly distributed along the circumferential direction of the annular cylinder 5, so that when the plurality of rollers 11 are outwardly supported, the annular cylinder 5 is uniformly stressed, in addition, the sealing plate 9 is controlled to slide in the sealing cavity 7 by the external driving device (the same as the driving principle of the cylinder) of the air nozzle 8, thereby controlling the extension amount of the extension rod 10, the distance between the roller 11 and the inner wall of the annular protection channel is detected by the plurality of distance measuring sensors 12, and whether the entire rotor module 4 is tilted is calculated, if the data measured by a distance measuring sensor 12 is different from the data of other distance measuring sensors 12, the extension amount of the single extension rod 10 is controlled, so that the rotor is in a coaxial suspension state with the stator when it is inside the stator.

[0041] Therefore, when any one of the arc-shaped protective plates 20 is expanded outwardly by the rollers 11, the other arc-shaped protective plates 20 are also expanded outwardly, which not only accelerates the formation of the annular protective channel, but also synchronously expands the multiple arc-shaped protective plates 20 and the multiple rollers 11, so that the annular supporting assembly supports the annular protective channel, and at the same time, the annular supporting assembly is resisted by the multiple arc-shaped protective plates 20, thereby gradually coaxially arranging the annular supporting assembly and the annular protective channel, until the multiple arc-shaped protective plates 20 gradually support the inner wall of the stator module 3 and cannot continue to expand, that is, the maximum expansion of the annular protective channel is achieved, thereby skipping the process of adjusting the rotor module 4 to the coaxial state with the stator module 3 before the assembly operation, and effectively improving the assembly efficiency of the stator module 3 and the rotor module 4.

[0042] In the embodiment, in order to avoid damage to the inner wall of the stator module 3 caused by the outer wall of the annular protective channel pressing the inner wall of the stator module 3, rubber cushions are installed on the outer walls of the multiple arc-shaped protective plates 20 for protection, which can also increase the friction between the arc-shaped protective plates 20 and the inner wall of the stator module 3, and avoid the annular protective channel from sliding in the stator module 3. In addition, the diameter of the annular mounting plate 14 is greater than the diameter of the through channel in the stator module 3, so that when the annular mounting plate 14 is attached to the end of the stator module 3, the maximum stroke of the annular protective channel extending into the stator module 3 is reached.

[0043] As a preferred solution of the stator-rotor coaxial assembly device, a vertical rod is fixedly installed in the long sliding groove 16, and a spring 21 is sleeved outside the vertical rod. The two ends of the spring 21 are respectively abutted against the inner wall of the long sliding groove 16 and the outer wall of the sliding rod 19.

[0044] As a further description of the embodiment, in the embodiment, the smaller the initial maximum outer diameter of the annular protective channel is, the lower the possibility of friction between the annular protective channel and the inner wall of the stator module 3 during the process of the annular protective channel extending into the stator module 3. Therefore, the annular protective channel should be kept in a folded state in the unexpanded state. In the embodiment, the spring 21 is added to resist the vertical rod, and the multiple arc-shaped protective plates 20 are attracted to the axis of the annular mounting plate 14 by the elastic force of the spring 21, so that the multiple arc-shaped protective plates 20 are in a folded state, which is convenient for entering the stator module 3.

[0045] As a preferred solution of the stator-rotor coaxial assembly device, the calibration detection unit includes a numerical control box 22 fixedly installed on the operation table 1. A laser emitter 23 is fixedly installed on the top of the numerical control box 22, and an industrial camera 24 is fixedly installed on the top of the laser emitter 23. The numerical control box 22 is used to connect and control all circuits in the calibration detection unit, the stator fixing unit, the rotor pushing unit, and the mechanical arm group 2.

[0046] As a further illustration of the present embodiment, in the present embodiment, the laser emitter 23 emits a cross positioning laser mark, giving a coaxial mark point for the assembly of the stator module 3 and the rotor module 4, the landing point of the cross positioning laser on the stator module 3 is judged and adjusted by the industrial camera 24, and the cross positioning laser mark is started again after the stator module 3 and the rotor module 4 are assembled to confirm the assembly degree, thereby improving the assembly accuracy of the stator module 3 and the rotor module 4. In the present embodiment, the numerical control box 22 is a general term for integrated circuits and control modules in conventional prior art, and the numerical control box 22 is used to collect data signals uploaded by each component and issue appropriate instructions, so that each component of the device can orderly execute the work functions of each component.

[0047] As a preferred solution provided by the coaxial assembly device for the stator and the rotor, the stator fixing unit comprises a first lifting table 25 fixedly installed on the operation table 1, and a positioning base 26 is fixedly installed on the top of the first lifting table 25, and the positioning base 26 is used to adjust and fix the stator module 3.

[0048] As a preferred solution provided by the coaxial assembly device for the stator and the rotor, the rotor pushing unit comprises a moving sliding table 27 fixedly installed on the operation table 1, a second lifting table 28 fixedly installed on the top of the moving sliding table 27, and a placing seat 29 used to place the rotor module 4 is fixedly installed on the top of the second lifting table 28.

[0049] As a preferred solution provided by the coaxial assembly device for the stator and the rotor, the mechanical arm group 2 comprises two mechanical arms, the two mechanical arms are oppositely distributed on one side of the stator fixing unit, and the two mechanical arms are quickly connected with the half-cylinder air cylinder 6 through the articulated lug 13.

[0050] As a further illustration of the present embodiment, in the present embodiment, the mechanical arm and the articulated lug 13 can be quickly connected or disconnected in various ways, such as electromagnetic adsorption, buckle, etc. Since there are various means for quickly connecting and disassembling the mechanical arm and the articulated lug 13, and it does not affect the overall operation process of the device, therefore, it will not be described here.

[0051] As a preferred solution provided by the coaxial assembly device for the stator and the rotor, the butt joint side of the two half-cylinder air cylinders 6 is formed with a connecting flat key 30, and the butt joint side of the two half-cylinder air cylinders 6 is provided with a containing groove 31 for containing the connecting flat key 30.

[0052] As a further illustration of the present embodiment, in the present embodiment, the two half-cylinder air cylinders 6 are each provided with a receiving groove 31, when the two half-cylinder air cylinders 6 are butted, the connecting flat keys 30 of the two half-cylinder air cylinders 6 respectively enter the receiving grooves 31 of the other, thereby improving the stability when the two half-cylinder air cylinders 6 are connected, when it is necessary to disassemble the half-cylinder air cylinders 6, any one half-cylinder air cylinder 6 is pulled out along the connecting flat key 30, and the connection state of the two half-cylinder air cylinders 6 is released.

[0053] The above-described embodiments and / or implementations are merely used to illustrate the preferred embodiments and / or implementations of the present application, and do not in any form limit the embodiments of the present application, and any person skilled in the art can make some changes or modifications as other equivalent embodiments without departing from the technical means disclosed in the present application, but should be considered as the same technical or embodiments as the present application.

[0054] The principles and implementations of the present application are described by using specific examples in the present application, and the above embodiment descriptions are only used to help understand the method of the present application and its core idea. The above descriptions are only preferred embodiments of the present application, and it should be pointed out that due to the limited expression, there are infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, refinements or changes can be made without departing from the principles of the present application, and the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or the application of the inventive concept and technical solution to other occasions without improvement, should be considered as the protection scope of the present application.

Claims

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

2. A stator-rotor coaxial assembly device according to claim 1, characterized in that: The annular protection channel comprises an annular mounting plate (14) abutting the side wall of the stator module (3), an annular synchronous plate (15) is rotatably arranged in the side wall of the annular mounting plate (14), a plurality of long slot grooves (16) are formed in the annular mounting plate (14), a plurality of inclined slot grooves (17) are formed in the annular synchronous plate (15), a plurality of extension strips (18) are slidably arranged in the annular mounting plate (14), one end of each extension strip (18) is fixedly provided with a sliding rod (19), the other end of each extension strip (18) away from the annular mounting plate (14) is fixedly connected with an arc-shaped protection plate (20), and the two ends of the sliding rod (19) are slidably arranged in the long slot groove (16) and the inclined slot groove (17) respectively.

3. A stator-rotor coaxial assembly device according to claim 2, characterized in that: A vertical rod is fixedly arranged in the long slot groove (16), and a spring (21) is sleeved on the outer portion of the vertical rod.

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

5. A stator-rotor coaxial assembly device according to claim 1, characterized in that: The stator fixing unit comprises a first lifting table (25) fixedly arranged on the operation table (1), and a positioning base (26) is fixedly arranged on the top of the first lifting table (25), the positioning base (26) is used for adjusting and fixing the stator module (3).

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

7. A stator-rotor coaxial assembly device according to claim 1, characterized in that: The mechanical arm group (2) comprises two mechanical arms, the two mechanical arms are oppositely distributed on one side of the stator fixing unit, and the two mechanical arms are quickly hinged with the semicircular air cylinder (6) through a hinge ear (13).

8. A stator-rotor coaxial assembly device according to claim 1, characterized in that: The butt joint side of each of the two semicircular air cylinders (6) is formed with a connecting flat key (30), and the butt joint side of each of the two semicircular air cylinders (6) is provided with an accommodating groove (31) for accommodating the connecting flat key (30).

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