Magnetic gear motor double-rotor assembling device and method

Abstract

The invention discloses a magnetic gear motor double-rotor assembling device and method, and belongs to the technical field of motor manufacturing. The assembling device comprises a high-speed rotor connecting seat, a low-speed rotor connecting seat and a guide screw rod; a coaxial central through hole I is formed in the high-speed rotor, and a coaxial central through hole II is formed in the supporting shaft; the top end of the low-speed rotor connecting seat penetrates through a central through hole II of the supporting shaft and is in shaft fit with the supporting shaft hole; the outer circumferential surface of the low-speed rotor connecting seat is in contact with the inner circumferential surface of the central through hole II of the supporting shaft, and the bottom of the supporting shaft is detachably connected with the low-speed rotor connecting seat; the top end of the guide screw rod penetrates through a central through hole I of the high-speed rotor and then is detachably connected with the high-speed rotor connecting seat; a thread II is arranged at the bottom end of the guide screw rod, a coaxial guide bolt hole is formed in the top of the low-speed rotor connecting seat, and the bottom end of the guide screw rod can be in threaded fit with the guide bolt hole; by rotating the guide screw rod, the guide screw rod can be coaxially connected with the low-speed rotor connecting seat, so that the high-speed rotor is coaxially assembled in the low-speed rotor. According to the invention, coaxial assembly of the double rotors can be realized, the assembly speed between the double rotors can be controlled, and the problems of scratching of the carbon fiber support sleeve, damage to silicon steel sheet arrangement, personal safety and the like caused by non-coaxiality of the double rotors are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of motor manufacturing, and in particular relates to a dual-rotor assembly device and method for a magnetic gear motor. Background Art

[0002] Wheel hub electric drive is the key development direction of electric transmission for wheeled special vehicles in the future. Among them, magnetic gears are the ideal wheel hub electric drive solution for extreme environments. Magnetic gears achieve internal deceleration and torque increase through magnetic field modulation, and have the functions of wheel hub motor drive and deceleration. Magnetic gears have both the simplicity of direct drive electric drive and high torque output capacity, which subverts the traditional mechanical contact torque transmission driving mode, overcomes friction, vibration, and noise problems, has low maintenance pressure, has overload protection capability, and has strong environmental adaptability. It can be used in harsh environments such as high and low temperatures, high altitudes, and high dust.

[0003] The magnetic gear consists of a stator and a double rotor. Figure 1 The assembled dual rotors include a high-speed rotor 7, a low-speed rotor 8 and a support shaft 9. The outer circumference of the support shaft 9 is provided with an annular step surface Ⅰ, and the bottom of the high-speed rotor 7 is provided with an annular edge inwardly. The high-speed rotor 7 is matched with the hole axis of the support shaft 9, and the bottom surface of the edge of the high-speed rotor 7 is against the step surface Ⅰ; the high-speed rotor 7 is matched with the hole axis of the support shaft 9 and is located in the low-speed rotor 8, and the bottom end of the low-speed rotor 8 is against the top surface of the edge.

[0004] At present, it is difficult to assemble the high-speed rotor 7 and the low-speed rotor 8 because the high-speed rotor 7 contains magnetic steel, which will produce a strong adsorption force on the low-speed rotor 8 made of silicon steel sheets or other soft magnetic materials. In particular, when the high-speed rotor 7 is wrapped with a carbon fiber support sleeve, if eccentricity or attraction between the two occurs during the assembly of the two rotors, the carbon fiber support sleeve will be scratched, and the assembly of the two rotors cannot be completed. In addition, in the absence of axial constraints, due to the action of strong magnetic force, the two rotors will suddenly be assembled together during the assembly process, which is easy to cause a large impact on the silicon steel sheets bonded to the low-speed rotor, thereby causing structural damage to the low-speed rotor 8, and also threatening the safety of the assemblers.

[0005] An assembly machine may be used to assemble the high-speed rotor 7 and the low-speed rotor 8. However, assembly on the assembly machine requires not only coaxial alignment but also a corresponding increase in cost. Summary of the invention

[0006] In view of this, the present invention provides a dual-rotor assembly device and method for a magnetic gear motor, which can realize the coaxial assembly of the dual rotors and at the same time control the assembly speed between the dual rotors, thereby avoiding problems such as scratches on the carbon fiber support sleeve, damage to the arrangement of silicon steel sheets, and personal safety caused by the non-coaxiality of the dual rotors.

[0007] The present invention is achieved through the following technical solutions:

[0008] A dual-rotor assembly device for a magnetic gear motor, the dual-rotor comprising a high-speed rotor, a low-speed rotor and a support shaft, the assembly device being used to coaxially assemble the high-speed rotor outside the support shaft and inside the low-speed rotor;

[0009] The assembly device comprises: a high-speed rotor connecting seat, a low-speed rotor connecting seat and a guide screw;

[0010] The high-speed rotor is provided with a coaxial central through hole I, and the support shaft is provided with a coaxial central through hole II;

[0011] The top end of the low-speed rotor connection seat passes through the central through hole II of the support shaft and matches with the support shaft hole; the outer circumferential surface of the low-speed rotor connection seat contacts the inner circumferential surface of the central through hole II of the support shaft, and the bottom of the support shaft is detachably connected with the low-speed rotor connection seat;

[0012] After the top end of the lead screw passes through the central through hole I of the high-speed rotor, it is detachably connected to the high-speed rotor connecting seat;

[0013] The bottom end of the guide screw is provided with a thread II, and the top of the low-speed rotor connecting seat is provided with a coaxial guide bolt hole, and the bottom end of the guide screw can be matched with the thread of the guide bolt hole;

[0014] By rotating the lead screw, the lead screw and the low-speed rotor connecting seat can be coaxially connected, and then the high-speed rotor can be coaxially assembled in the low-speed rotor.

[0015] Furthermore, the assembly device also includes an extension tool;

[0016] The extension tooling is a stepped tubular structure, including a large diameter section I and a small diameter section I;

[0017] The low-speed rotor connection seat is a stepped cylindrical structure, including a large diameter section II and a small diameter section II connected in sequence from bottom to top, the outer circumference of the large diameter section II contacts the inner circumference of the central through hole II of the support shaft; an annular gap is formed between the small diameter section II and the support shaft;

[0018] When assembling the dual rotors, the extension tooling is sleeved on the top of the low-speed rotor connecting seat, and the small diameter section I of the extension tooling is coaxially located in the annular gap; a step surface II is formed between the small diameter section I and the large diameter section I of the extension tooling; the step surface II is abutted against the upper end surface of the support shaft; the step surface II of the extension tooling is detachably connected to the upper end surface of the support shaft, and the maximum diameter of the large diameter section I of the extension tooling is the same as the maximum diameter of the upper end surface of the support shaft.

[0019] Furthermore, the large diameter section I of the extension tooling is provided with a plurality of axial grooves, the inner side surface of the lower end of the groove is provided with a connecting hole, and the upper end surface of the support shaft is correspondingly provided with a connecting hole. The grooves and the connecting holes are connected by bolts to achieve a detachable connection between the step surface II of the extension tooling and the upper end surface of the support shaft.

[0020] Furthermore, the high-speed rotor connecting seat is a cylindrical shell structure with a bottom opening and a central through hole III at the top. The bottom end of the high-speed rotor connecting seat is provided with a flange for detachable connection with the high-speed rotor.

[0021] Furthermore, a thread I is provided at the top of the guide screw, and a shoulder is provided below the thread I; the shoulder is located inside the high-speed rotor connecting seat, and the thread I of the guide screw is limited by the shoulder after extending out of the center through hole III, and an external hexagonal assembly nut is connected to the outside of the guide screw.

[0022] Furthermore, a plurality of openings are provided on the side wall of the high-speed rotor connecting seat.

[0023] A method for assembling a double rotor of a magnetic gear motor is based on a double rotor assembling device of a magnetic gear motor, and the steps are as follows:

[0024] Step 1: fix the top end of the lead screw to the high-speed rotor connecting seat, and then detachably connect the high-speed rotor to the high-speed rotor connecting seat;

[0025] Step 2: Sleeve the support shaft and the low-speed rotor on the low-speed rotor connecting seat and detachably fix them;

[0026] Step 3: Sleeve the small diameter section I of the extension tooling on the top of the low-speed rotor connection seat, so that the small diameter section I of the extension tooling is located in the annular gap between the low-speed rotor connection seat and the support shaft, and abut the step surface of the extension tooling against the upper end surface of the support shaft; make the connection hole in the groove of the extension tooling and the connection hole on the upper end surface of the support shaft face each other up and down, connect the relative grooves and connection holes with bolts, and limit the extension tooling;

[0027] Step 4: hoist the combination of the high-speed rotor, the high-speed rotor connection seat and the guide screw to the top of the low-speed rotor, insert the bottom end of the guide screw into the guide bolt hole at the top of the low-speed rotor connection seat, and continuously rotate the guide screw until the high-speed rotor is coaxially assembled into the low-speed rotor;

[0028] Step 5: Disassemble the high-speed rotor connecting seat, guide screw, extension tooling and low-speed rotor connecting seat in sequence to complete the assembly of the high-speed rotor, low-speed rotor and support shaft.

[0029] Beneficial effects:

[0030] (1) The present invention connects the high-speed rotor and the high-speed rotor connecting seat coaxially, connects the low-speed rotor and the low-speed rotor connecting seat coaxially and fixedly, and then connects the high-speed rotor connecting seat and the low-speed rotor through a guide screw. On the one hand, the coaxial installation of the high-speed rotor and the low-speed rotor can be ensured, thereby avoiding the problems of scratching the carbon fiber support sleeve or damaging the arrangement of the silicon steel sheets due to the misalignment of the dual rotors. On the other hand, the assembly speed of the high-speed rotor and the low-speed rotor can be controlled by controlling the speed at which the guide screw is screwed into the low-speed rotor connecting seat, thereby avoiding the sudden assembly of the dual rotors, causing a large impact on the silicon steel sheets bonded to the low-speed rotor, and further causing damage to the low-speed rotor structure, thereby ensuring the structural integrity of the dual rotors and the safety of the assemblers to the greatest extent.

[0031] (2) The present invention is also provided with an extension tooling, so that the high-speed rotor can be coaxially limited by the large diameter section I of the extension tooling before entering the low-speed rotor, thereby further ensuring the coaxial accuracy of the high-speed rotor and the low-speed rotor and the stability during the assembly process.

[0032] (3) The top end of the guide screw of the present invention has a portion with thread Ⅰ extending out of the central through hole Ⅲ and connected to an external hexagonal assembly nut, which not only provides a force-bearing surface for the rotation of the guide screw, but also facilitates the disassembly of the guide screw and the high-speed rotor connecting seat.

[0033] (4) The side wall of the high-speed rotor connecting seat of the present invention is provided with a plurality of openings, which can reduce weight and make the assembled device portable.

[0034] (5) The present invention provides a method for assembling a dual-rotor magnetic gear motor, which facilitates stable and reliable coaxial installation between the high-speed rotor, the low-speed rotor and the support shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of a dual-rotor assembly structure in the background technology;

[0036] Figure 2 It is a schematic structural diagram of the dual-rotor assembly device of the present invention;

[0037] Figure 3 It is a schematic diagram of the structural position of the high-speed rotor connecting seat and the high-speed rotor of the present invention;

[0038] Figure 4 It is a schematic diagram of the structural position of the low-speed rotor connecting seat, the support shaft and the low-speed rotor of the present invention;

[0039] Figure 5 This is a schematic diagram of the relative position structure of the dual rotors before assembly of the present invention;

[0040] Figure 6 It is a schematic diagram of the relative position structure of the double rotors after assembly of the present invention (with an assembly device);

[0041] 1-external hexagonal assembly nut, 2-high-speed rotor connecting seat, 3-guide screw, 4-extension tooling, 5-guide bolt hole, 6-low-speed rotor connecting seat, 7-high-speed rotor, 8-low-speed rotor, 9-support shaft. DETAILED DESCRIPTION

[0042] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0043] Embodiment 1:

[0044] This embodiment provides a dual-rotor assembly device for a magnetic gear motor, wherein the dual-rotor comprises a high-speed rotor 7, a low-speed rotor 8 and a support shaft 9, and the assembly device is used to coaxially assemble the high-speed rotor 7 outside the support shaft 9 and inside the low-speed rotor 8;

[0045] See attached Figure 2-6 The assembly device includes a high-speed rotor connecting seat 2, a low-speed rotor connecting seat 6 and a guide screw 3;

[0046] The high-speed rotor 7 is provided with a coaxial central through hole I, and the support shaft 9 is provided with a coaxial central through hole II;

[0047] The high-speed rotor 7 is coaxially and detachably connected to the bottom of the high-speed rotor connecting seat 2;

[0048] The top of the low-speed rotor connection seat 6 passes through the central through hole II of the support shaft 9 and matches with the hole axis of the support shaft 9; the outer circumferential surface of the low-speed rotor connection seat 6 contacts the inner circumferential surface of the central through hole II of the support shaft 9, and the bottom of the support shaft 9 is detachably connected to the low-speed rotor connection seat 6;

[0049] After the top end of the lead screw 3 passes through the central through hole I of the high-speed rotor 7, it is detachably connected to the high-speed rotor connecting seat 2;

[0050] The bottom end of the guide screw 3 is provided with a thread II, and the top of the low-speed rotor connecting seat 6 is provided with a coaxial guide bolt hole 5, and the bottom end of the guide screw 3 can be threadedly matched with the guide bolt hole 5;

[0051] By rotating the lead screw 3 , the lead screw 3 can be coaxially connected to the low-speed rotor connecting seat 6 , and then the high-speed rotor 7 can be coaxially assembled in the low-speed rotor 8 .

[0052] In this embodiment, the high-speed rotor 7 is coaxially connected to the high-speed rotor connecting seat 2, the low-speed rotor 8 is coaxially fixedly connected to the low-speed rotor connecting seat 6, and then the high-speed rotor connecting seat 2 is connected to the low-speed rotor 8 through the guide screw 3. On the one hand, the coaxial installation of the high-speed rotor 7 and the low-speed rotor 8 can be ensured, thereby avoiding the problems of scratching the carbon fiber support sleeve or damaging the arrangement of the silicon steel sheets due to the misalignment of the dual rotors; on the other hand, the assembly speed of the high-speed rotor 7 and the low-speed rotor 8 can be controlled by controlling the speed at which the guide screw 3 is screwed into the low-speed rotor connecting seat 6, thereby avoiding the sudden assembly of the dual rotors, causing a large impact on the silicon steel sheets bonded to the low-speed rotor, and then causing damage to the low-speed rotor structure, thereby ensuring the structural integrity of the dual rotors and the safety of the assemblers to the greatest extent.

[0053] The dual-rotor assembly device also includes an extension tool 4, see the attached Figure 4 , the extension tooling 4 is a stepped tubular structure, including a large diameter section I and a small diameter section I;

[0054] The low-speed rotor connection seat 6 is a stepped cylindrical structure, including a large diameter section II and a small diameter section II connected in sequence from bottom to top;

[0055] The bottom of the large diameter section II is provided with a flange for detachable connection with the support shaft 9;

[0056] The outer circumferential surface of the aforementioned low-speed rotor connecting seat 6 contacts the inner circumferential surface of the central through hole II of the support shaft 9, that is, the outer circumferential surface of the large diameter section II contacts the inner circumferential surface of the central through hole II of the support shaft 9;

[0057] An annular gap is formed between the small diameter section II and the support shaft 9;

[0058] When assembling the double rotors, the extension tool 4 is sleeved on the top of the low-speed rotor connecting seat 6, the small diameter section I of the extension tool 4 is coaxially located in the annular gap, the small diameter section I and the large diameter section I of the extension tool 4 form a step surface II, the step surface II abuts against the upper end surface of the support shaft 9, and the maximum diameter of the large diameter section I of the extension tool 4 is the same as the maximum diameter of the upper end surface of the support shaft 9;

[0059] The large diameter section I of the extension tool 4 is provided with a plurality of grooves along the axial direction, the upper end of the groove passes through the end of the large diameter section I, the inner side surface of the lower end of the groove is provided with a connecting hole, and the upper end surface of the support shaft 9 is correspondingly provided with a connecting hole, and the groove and the connecting hole are connected by bolts to limit the extension tool 4;

[0060] By providing the extension tooling 4, the high-speed rotor 7 can be coaxially limited by the large diameter section I of the extension tooling 4 before entering the low-speed rotor 8, thereby further ensuring the coaxial accuracy of the high-speed rotor 7 and the low-speed rotor 8 and the stability during the assembly process.

[0061] The high-speed rotor connection seat 2 is a cylindrical shell structure with an opening at the bottom and a central through hole III at the top. The bottom of the high-speed rotor connection seat 2 is provided with a flange for detachably connecting with the high-speed rotor 7.

[0062] A thread Ⅰ is provided at the top of the guide screw 3, and a shoulder is provided below the thread Ⅰ; the shoulder is located inside the high-speed rotor connecting seat 2, and the top of the guide screw 3 with the thread Ⅰ is extended out of the center through hole III and then limited by the shoulder, and an external hexagonal assembly nut 1 is connected to the outside of the guide screw 3. The external hexagonal assembly nut 1 provides a force surface for the rotation of the guide screw 3 and also facilitates the disassembly of the guide screw 3 and the high-speed rotor connecting seat 2.

[0063] In a specific embodiment, the side wall of the high-speed rotor connecting seat 2 is provided with a plurality of openings, which can reduce weight and make the assembled device portable.

[0064] In a specific embodiment, the high-speed rotor 7 is connected to the high-speed rotor connecting seat 2 by bolts, and the low-speed rotor 8 is connected to the supporting shaft 9 by bolts.

[0065] The high-speed rotor connecting seat 2, the supporting shaft 9, the low-speed rotor connecting seat 6, the guide screw 3 and the extension tooling 4 are all made of stainless steel.

[0066] Embodiment 2:

[0067] Based on Example 1, this embodiment provides a method for assembling a dual-rotor magnetic gear motor, the steps of the method are as follows:

[0068] Step 1: fix the top end of the guide screw 3 to the high-speed rotor connecting seat 2, and then detachably connect the high-speed rotor 7 to the high-speed rotor connecting seat 2;

[0069] Specifically, the top end of the lead screw 3 is passed through the central through hole III of the high-speed rotor connecting seat 2, and then threadedly connected with the external hexagonal assembly nut 1; and then the high-speed rotor 7 is connected to the high-speed rotor connecting seat 2 by a plurality of bolts;

[0070] Step 2: sleeve the support shaft 9 and the low-speed rotor 8 on the low-speed rotor connecting seat 6 and fix them detachably; specifically, use a plurality of bolts to connect the support shaft 9 and the low-speed rotor connecting seat 6; coaxially assemble the high-speed rotor 7 on the outer circumference of the support shaft 9;

[0071] Step 3: Sleeve the small diameter section I of the extension tooling 4 on the top of the low-speed rotor connecting seat 6, so that the small diameter section I of the extension tooling 4 is located in the annular gap between the low-speed rotor connecting seat 6 and the support shaft 9, and the step surface of the extension tooling 4 abuts against the upper end surface of the support shaft 9; make the connecting hole in the groove of the extension tooling 4 and the connecting hole on the upper end surface of the support shaft 9 face each other up and down, connect the opposite grooves and connecting holes with bolts, and limit the extension tooling 4;

[0072] Step 4: hoist the combination of the high-speed rotor 7, the high-speed rotor connecting seat 2 and the lead screw 3 to the top of the low-speed rotor 8, insert the bottom end of the lead screw 3 into the guide bolt hole 5 at the top of the low-speed rotor connecting seat 6, and continuously rotate the lead screw 3 until the high-speed rotor 7 is coaxially assembled into the low-speed rotor 8;

[0073] Specifically, by rotating the hexagonal assembly nut 1, the rotation of the lead screw 3 is achieved;

[0074] Step 5: disassemble the high-speed rotor connecting seat 2, the guide screw 3, the extension tooling 4 and the low-speed rotor connecting seat 6 in sequence to complete the assembly of the high-speed rotor 7, the low-speed rotor 8 and the support shaft 9.

[0075] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic gear motor dual rotor assembly device, wherein the dual rotors include a high-speed rotor, a low-speed rotor and a support shaft, characterized in that: The assembly device is used to coaxially assemble the high-speed rotor outside the support shaft and inside the low-speed rotor; The assembly device comprises: a high-speed rotor connecting seat, a low-speed rotor connecting seat and a guide screw; The high-speed rotor is provided with a coaxial central through hole I, and the support shaft is provided with a coaxial central through hole II; The top end of the low-speed rotor connection seat passes through the central through hole II of the support shaft and matches with the support shaft hole; the outer circumferential surface of the low-speed rotor connection seat contacts the inner circumferential surface of the central through hole II of the support shaft, and the bottom of the support shaft is detachably connected with the low-speed rotor connection seat; After the top end of the lead screw passes through the central through hole I of the high-speed rotor, it is detachably connected to the high-speed rotor connecting seat; The bottom end of the guide screw is provided with a thread II, and the top of the low-speed rotor connecting seat is provided with a coaxial guide bolt hole, and the bottom end of the guide screw can be matched with the thread of the guide bolt hole; By rotating the lead screw, the lead screw and the low-speed rotor connecting seat can be coaxially connected, and then the high-speed rotor can be coaxially assembled in the low-speed rotor.

2. A magnetic gear motor dual rotor assembly device as claimed in claim 1, characterized in that: Also includes extension tooling; The extension tooling is a stepped tubular structure, including a large diameter section I and a small diameter section I; The low-speed rotor connection seat is a stepped cylindrical structure, including a large diameter section II and a small diameter section II connected in sequence from bottom to top, the outer circumference of the large diameter section II contacts the inner circumference of the central through hole II of the support shaft; an annular gap is formed between the small diameter section II and the support shaft; When assembling the dual rotors, the extension tooling is sleeved on the top of the low-speed rotor connecting seat, and the small diameter section I of the extension tooling is coaxially located in the annular gap; a step surface II is formed between the small diameter section I and the large diameter section I of the extension tooling; the step surface II is abutted against the upper end surface of the support shaft; the step surface II of the extension tooling is detachably connected to the upper end surface of the support shaft, and the maximum diameter of the large diameter section I of the extension tooling is the same as the maximum diameter of the upper end surface of the support shaft.

3. A magnetic gear motor dual rotor assembly device as claimed in claim 2, characterized in that: The large diameter section I of the extension tooling is provided with a plurality of grooves along the axial direction, the inner side surface of the lower end of the groove is provided with a connecting hole, and the upper end surface of the support shaft is correspondingly provided with a connecting hole. The grooves and the connecting holes are connected by bolts to realize the detachable connection between the step surface II of the extension tooling and the upper end surface of the support shaft.

4. A magnetic gear motor dual rotor assembly device as claimed in claim 1, characterized in that: The high-speed rotor connecting seat is a cylindrical shell structure with an opening at the bottom and a central through hole III at the top. The bottom end of the high-speed rotor connecting seat is provided with a flange for detachable connection with the high-speed rotor.

5. A magnetic gear motor dual rotor assembly device as claimed in claim 4, characterized in that: A thread I is arranged at the top of the guide screw, and a shaft shoulder is arranged below the thread I; the shaft shoulder is located inside the high-speed rotor connecting seat, and the thread I of the guide screw is limited by the shaft shoulder after extending out of the center through hole III, and an external hexagonal assembly nut is connected to the outside of the guide screw.

6. A magnetic gear motor dual rotor assembly device as claimed in any one of claims 1 to 5, characterized in that: The side wall of the high-speed rotor connecting seat is provided with a plurality of openings.

7. A method for assembling a magnetic gear motor with two rotors, based on the magnetic gear motor with two rotors assembly device according to claim 2, characterized in that: Here are the steps: Step 1: fix the top end of the lead screw to the high-speed rotor connecting seat, and then detachably connect the high-speed rotor to the high-speed rotor connecting seat; Step 2: Sleeve the support shaft and the low-speed rotor on the low-speed rotor connecting seat and detachably fix them; Step 3: Sleeve the small diameter section I of the extension tooling on the top of the low-speed rotor connection seat, so that the small diameter section I of the extension tooling is located in the annular gap between the low-speed rotor connection seat and the support shaft, and abut the step surface of the extension tooling against the upper end surface of the support shaft; make the connection hole in the groove of the extension tooling and the connection hole on the upper end surface of the support shaft face each other up and down, connect the relative grooves and connection holes with bolts, and limit the extension tooling; Step 4: hoist the combination of the high-speed rotor, the high-speed rotor connection seat and the guide screw to the top of the low-speed rotor, insert the bottom end of the guide screw into the guide bolt hole at the top of the low-speed rotor connection seat, and continuously rotate the guide screw until the high-speed rotor is coaxially assembled into the low-speed rotor; Step 5: Disassemble the high-speed rotor connecting seat, guide screw, extension tooling and low-speed rotor connecting seat in sequence to complete the assembly of the high-speed rotor, low-speed rotor and support shaft.

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