Motor rotor assembly tool and assembly method

Abstract

The application discloses a motor rotor assembling tool and an assembling method. The motor rotor assembling tool comprises a support base, an inner positioning ring, an outer positioning ring, an axial positioning module, an axial adjusting module and a radial adjusting module. The inner positioning ring and the outer positioning ring provide coaxial positioning for a rotor shaft system and a support framework. In the assembling process, the axial adjusting module is fixedly connected to the support base and the support framework to adjust the axial position of the support framework. Then, the axial positioning module is fixedly connected to the rotor shaft system and the support framework to position and fix the axial position of the support framework. After the positioning and fixing of the axial position of the support framework are completed, the radial adjusting module is inserted between the rotor shaft system and the support framework to finely adjust the coaxiality of the rotor shaft system and the support framework. Finally, the assembling of the rotor shaft system and the support framework is realized. The assembling difficulty of the rotor shaft system and the support framework can be remarkably reduced, and the assembling precision of the rotor shaft system and the support framework is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to an electric machine rotor assembly tool and assembly method. BACKGROUND

[0002] With the development of social production, traditional electric machines have been difficult to meet the demand for higher magnetic density, larger torque and smaller size. In order to break through the magnetic density limit of traditional electric machines, a superconducting electric machine scheme can be used. The superconducting electric machine is a new type of synchronous electric machine using superconducting coils to replace conventional copper coils. In the current mature superconducting electric machine scheme, superconducting magnets are arranged in the rotor to generate a high-strength magnetic field.

[0003] In a superconducting electric machine using conduction cooling, the superconducting magnets on the rotor are fixed on the support skeleton, and the superconducting magnets and the support skeleton are placed in a low-temperature environment (such as a liquid helium temperature zone) to achieve superconductivity. In order to reduce heat transfer between the rotor shaft system and the support skeleton of the superconducting electric machine, a composite material pull rod support assembly with poor heat transfer coefficient is used as a torque transmission path, and the low-temperature components such as the superconducting magnet and the support skeleton are fixed to the normal-temperature rotor shaft system by the connecting support assembly. During the cooling process, the shrinkage displacement and deformation of the structure will cause a large internal stress; and when the superconducting electric machine is working, the electromagnetic load on the rotor will form a strong electromagnetic torque, which is output to the superconducting electric machine shaft system through the support skeleton and the support assembly.

[0004] During the rotation of the superconducting electric machine, in order to ensure the uniformity of the magnetic field generated by the superconducting magnet and reduce the moment of inertia of the electric machine rotor shaft system, high requirements are put forward for the installation and positioning accuracy of the superconducting rotor magnet support skeleton and the support component. The superconducting rotor and the support skeleton are connected at the end through a connecting rod, but the locking assembly needs to be installed through the matching hinge method after the relative position relationship between the two is determined. Previously, the superconducting electric machine rotor shaft system and the support skeleton were mostly installed in the manner of being hoisted by the electric machine rotor hoisting device disclosed in CN117361291A and the like. In this way, it is difficult to avoid the shaking of the parts caused by the inertia and contact installation when the crane is hoisted during the assembly process, resulting in that the assembly of the electric machine rotor shaft system and the support skeleton is difficult and the assembly precision is not high. Therefore, a reasonable tool needs to be designed for the positioning and installation between the superconducting rotor and the support skeleton. SUMMARY

[0005] The present application aims to overcome the above technical deficiencies and provides an electric machine rotor assembly tool and assembly method, which solves the technical problems of high assembly difficulty and low assembly precision of the superconducting electric machine rotor shaft system and the support skeleton in the prior art.

[0006] To achieve the above technical purpose, the present application adopts the following technical scheme:

[0007] In a first aspect, the present application provides an electric motor rotor assembly tool, which can assist the assembly of a rotor shaft system and a support framework, comprising:

[0008] a support seat;

[0009] an inner positioning ring fixed to the support seat to position and place the rotor shaft system;

[0010] an outer positioning ring coaxially arranged outside the inner positioning ring and fixed to the support seat to preliminarily position the support framework;

[0011] an axial adjustment module arranged between the support seat and the support framework to adjust the axial position of the support framework;

[0012] an axial positioning module arranged between the support seat and the support framework to position the axial position of the support framework; and

[0013] a radial adjustment module for insertion between the rotor shaft system and the support framework to adjust the coaxiality of the rotor shaft system and the support framework.

[0014] In some embodiments, the support framework is provided with a plurality of installation openings in the circumferential direction, the axial positioning module comprises a plurality of assembly pieces and a first threaded adjustment piece, each assembly piece is used for fitting into each installation opening, and the first threaded adjustment piece is threadedly connected with the assembly pieces and the rotor shaft system.

[0015] In some embodiments, the side of the assembly piece matched with the rotor shaft system is provided with a positioning stopper, and the positioning stopper is used for fitting with the rotor shaft system.

[0016] In some embodiments, the axial adjustment module comprises a plurality of second threaded adjustment pieces, each second threaded adjustment piece is threadedly connected with the support seat to support and axially adjust the support framework.

[0017] In some embodiments, the support framework is further provided with a plurality of adjustment windows in the circumferential direction, the radial adjustment module comprises a plurality of adjustment blocks, each adjustment block is provided with a wedge-shaped adjustment end, each adjustment block is arranged in each adjustment window in the height direction of the adjustment window, and the wedge-shaped adjustment end is inserted between the rotor shaft system and the support framework to adjust the rotor shaft system and the support framework.

[0018] In some embodiments, the assembly tool further comprises a locking assembly, and the locking assembly is used for fixing and connecting the rotor shaft system and the support framework after assembly.

[0019] In a second aspect, the present application provides a motor rotor assembling method, which is executed by the motor rotor assembling tool, and comprises the following steps:

[0020] Assembling the rotor shaft system to the inner positioning ring;

[0021] Assembling the support framework to the outer positioning ring;

[0022] Connecting the axial adjusting module to the support seat and the support framework to adjust the axial position of the support framework;

[0023] Fixing the axial positioning module to the rotor shaft system and the support framework to position the axial position of the support framework;

[0024] Inserting the radial adjusting module between the rotor shaft system and the support framework to fine-tune the coaxiality of the rotor shaft system and the support framework.

[0025] In some embodiments, in the step of fixing the axial adjusting module to the support seat and the support framework, each second threaded adjusting member is threadedly connected to the support seat and the support framework to adjust the axial position of the support framework.

[0026] In some embodiments, in the step of fixing the axial positioning module to the rotor shaft system and the support framework, each assembly member is respectively fitted into each fitting opening, and then the first threaded adjusting member is threadedly connected to the assembly member and the rotor shaft system to position the axial position of the support framework.

[0027] In some embodiments, in the step of inserting the radial adjusting module between the rotor shaft system and the support framework, each adjusting block is inserted between the rotor shaft system and the support framework through a wedge-shaped adjusting end to fine-tune the coaxiality of the rotor shaft system and the support framework.

[0028] Compared with the prior art, the motor rotor assembly tool provided by the application comprises a support seat, an inner positioning ring, an outer positioning ring, an axial positioning module, an axial adjusting module and a radial adjusting module, the inner positioning ring and the outer positioning ring are arranged on the support seat to preliminarily ensure the coaxiality of the rotor shaft system and the support framework and provide positioning for the rotor shaft system and the support framework respectively, the coaxiality of the rotor shaft system and the support framework is adjusted through the axial adjusting module, the axial positioning module and the radial adjusting module to ensure the assembly precision of the rotor shaft system and the support framework, and the specific assembly process is as follows: firstly, the rotor shaft system is assembled on the inner positioning ring, then the support framework is assembled on the outer positioning ring, and then the axial adjusting module is connected to the support seat and the support framework to adjust the axial position of the support framework; then the axial positioning module is fixedly connected to the rotor shaft system and the support framework to position and fix the axial position of the support framework; after the positioning and fixing of the axial position of the support framework are completed, the radial adjusting module is inserted between the rotor shaft system and the support framework to finely adjust the coaxiality of the rotor shaft system and the support framework, and finally the assembly of the rotor shaft system and the support framework is realized. Through the above assembly, the assembly difficulty of the rotor shaft system and the support framework can be significantly reduced, and the assembly precision of the rotor shaft system and the support framework can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a structural schematic diagram of a motor rotor assembly tool provided by an embodiment of the application;

[0030] Figure 2 FIG. 5 is a structural schematic diagram of a support seat provided by an embodiment of the application;

[0031] Figure 3 FIG. 8 is an assembly diagram of a rotor shaft system and a support framework provided by an embodiment of the application;

[0032] Figure 4 FIG. 11 is a flow chart of a motor rotor assembly method provided by an embodiment of the application.

[0033] Reference signs in the drawings:

[0034] 10 - support seat 11 - upper chassis 12 - lower chassis

[0035] 13 - support column 20 - inner positioning ring 21 - annular positioning stop

[0036] 30 - outer positioning ring 40 - axial positioning module 41 - assembly part

[0037] 42 - first threaded adjusting part 50 - axial adjusting module 51 - second threaded adjusting part

[0038] 60 - radial adjusting module 61 - adjusting block 70 - locking assembly

[0039] 71 - connecting rod 411 - first jacking hole 611 - wedge-shaped adjusting end

[0040] 612 - second jacking hole 10a - rotor shafting 20a - support skeleton

[0041] 21a - loading port 22a - adjusting window. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0043] In order to solve the technical problems of high assembly difficulty and low assembly precision of the superconducting motor rotor shafting 10a and the support skeleton 20a in the prior art, the present application provides a motor rotor assembly tool and a motor rotor assembly method to assist the assembly of the rotor shafting 10a and the support skeleton 20a, thereby reducing the assembly difficulty of the rotor shafting 10a and the support skeleton 20a and improving the assembly precision of the rotor shafting 10a and the support skeleton 20a.

[0044] It should be noted that the motor rotor assembly tool described in the present application is used for but not limited to the assembly of the rotor shafting 10a and the support skeleton 20a of the superconducting motor. In order to facilitate the description, in the present application, only the application of the motor rotor assembly tool to the assembly of the rotor shafting 10a and the support skeleton 20a of the superconducting motor is taken as an example for description, and the principle of the application of the motor rotor assembly tool to other types of equipment is substantially the same as the principle of the application of the motor rotor assembly tool to the assembly of the rotor shafting 10a and the support skeleton 20a of the superconducting motor, which is not described here.

[0045] As shown in Figures 1-3 The motor rotor assembly tool provided by the present application comprises a support seat 10, an inner positioning ring 20, an outer positioning ring 30, an axial positioning module 40, an axial adjusting module 50 and a radial adjusting module 60. The inner positioning ring 20 is fixed to the support seat 10 to position and place the rotor shafting 10a. The outer positioning ring 30 is coaxially arranged outside the inner positioning ring 20 and is fixed to the support seat 10 to preliminarily position the support skeleton 20a. The axial adjusting module 50 is configured to connect the support seat 10 and the support skeleton 20a to adjust the axial position of the support skeleton 20a. The axial positioning module 40 is configured to connect the rotor shafting 10a and the support skeleton 20a to adjust and lock the axial position of the rotor shafting 10a and the support skeleton 20a. The radial adjusting module 60 is configured to be inserted between the rotor shafting 10a and the support skeleton 20a to adjust the coaxiality of the rotor shafting 10a and the support skeleton 20a.

[0046] Specifically, the motor rotor assembly tool is provided with the support base 10, the inner positioning ring 20, the outer positioning ring 30, the axial positioning module 40, the axial adjusting module 50 and the radial adjusting module 60. The inner positioning ring 20 and the outer positioning ring 30 are arranged on the support base 10 and can provide positioning for the rotor shaft system 10a and the support framework 20a respectively, thereby preliminarily ensuring the coaxiality of the rotor shaft system and the support framework. Then, the coaxiality and the axial position of the rotor shaft system 10a and the support framework 20a are adjusted by the axial positioning module 40, the axial adjusting module 50 and the radial adjusting module 60, so as to ensure the assembly precision of the rotor shaft system 10a and the support framework 20a. The assembly process is as follows. First, the rotor shaft system 10a is assembled on the inner positioning ring 20. Then, the support framework 20a is assembled on the outer positioning ring 30. Then, the axial adjusting module 50 is connected to the support base 10 and the support framework 20a, so as to adjust the axial position of the support framework 20a. Then, the axial positioning module 40 is fixedly connected to the rotor shaft system 10a and the support framework 20a, so as to position and fix the axial position of the support framework 20a. After the axial position of the support framework 20a is positioned and fixed, the radial adjusting module 60 is inserted between the rotor shaft system 10a and the support framework 20a, so as to finely adjust the coaxiality of the rotor shaft system 10a and the support framework 20a. Finally, the coaxiality and the axial relative position of the rotor shaft system 10a and the support framework 20a are ensured. Through the above assembly, the assembly difficulty of the rotor shaft system 10a and the support framework 20a can be significantly reduced, and the assembly precision of the rotor shaft system 10a and the support framework 20a can be improved.

[0047] In the embodiment, as shown in Figures 1-2 The support base 10 includes an upper bottom plate 11, a lower bottom plate 12 and a plurality of support columns 13 arranged between the upper bottom plate 11 and the lower bottom plate. The lower bottom plate 12 is supported on the ground, and the inner positioning ring 20 and the outer positioning ring 30 are formed on the upper bottom plate 11.

[0048] In the embodiment, as shown in Figure 2 The end of the inner positioning ring 20 is provided with an annular positioning stop 21, which can be used for assembling the rotor shaft system 10a. Specifically, when the rotor shaft system 10a is assembled, the rotor shaft system 10a is hoisted and the rotor of the rotor shaft system 10a is assembled on the annular positioning stop 21. The rotor shaft system 10a is assembled on the annular positioning stop 21, which can position the rotor shaft system 10a and provide support for the rotor shaft system 10a. Through the positioning and support of the rotor shaft system 10a by the annular positioning stop 21, the rotor shaft system 10a is pre-fixed. The support framework 20a is assembled based on the pre-fixed rotor shaft system 10a, so that the rotor shaft system 10a and the support framework 20a are assembled from the inside to the outside, thereby reducing the assembly difficulty of the rotor shaft system 10a and the support framework 20a.

[0049] In the embodiment, when assembling the support framework 20a, the support framework 20a is sleeved on the outer positioning ring 30 by hoisting, and is spaced from the rotor shaft system 10a. To support the support framework 20a, the axial adjustment module 50 is connected between the support seat 10 and the support framework 20a when the support framework 20a is assembled to a certain position, so as to preliminarily adjust the axial position of the support framework 20a by the axial adjustment module 50. When the axial positioning module 40 is connected between the rotor shaft system 10a and the support framework 20a, the support framework 20a is almost fixed in the axial direction, and the axial positioning module 40 can further finely adjust the position of the support framework 20a by connecting the support framework 20a and the rotor shaft system 10a, so as to position and lock the axial position of the support framework 20a. Subsequently, only the coaxiality of the rotor shaft system 10a and the support framework 20a needs to be adjusted.

[0050] In one of the embodiments, as shown in Figure 1 and 3 , the support framework 20a is spaced in the circumferential direction and is provided with a plurality of mounting holes 21a, the axial positioning module 40 includes a plurality of assembly pieces 41 and a first threaded adjusting piece 42, each assembly piece 41 is used for being fitted in each mounting hole 21a, and the first threaded adjusting piece 42 is threadedly connected between the assembly piece 41 and the rotor shaft system 10a. Specifically, when the rotor shaft system 10a and the support framework 20a are connected, each assembly piece 41 is fitted in each mounting hole 21a, and then the first threaded adjusting piece 42 is threadedly connected between the assembly piece 41 and the rotor shaft system 10a. In the process of threadedly connecting the first threaded adjusting piece 42 and the rotor shaft system 10a, the support framework 20a is axially offset by the assembly piece 41, the axial position of the support framework 20a is gradually finely adjusted, the final positioning of the axial position of the rotor shaft system 10a and the support framework 20a is formed, and when the first threaded adjusting piece 42 is tightened, the assembly piece 41 is tightly connected with the rotor shaft system 10a, so that the rotor shaft system 10a and the support framework 20a are integrated, the rotation and offset of the rotor shaft system 10a relative to the support framework 20a in the subsequent assembly process are prevented, and then the adjustment of the support framework 20a is avoided. Only the coaxiality of the rotor shaft system 10a and the support framework 20a needs to be finely adjusted, the assembly precision of the rotor shaft system 10a and the support framework 20a is ensured, and the assembly difficulty of the rotor shaft system 10a and the support framework 20a is reduced.

[0051] In the embodiment, the number of the mounting holes 21a is four, and the four mounting holes 21a are uniformly spaced along the circumferential direction of the support framework 20a.

[0052] In the embodiment, the shape and size of the assembly piece 41 can be adaptively set according to the shape and size of the mounting hole 21a, and only the assembly piece 41 needs to be fitted with the mounting hole 21a without offsetting relative to the support framework 20a.

[0053] In this embodiment, the assembly part 41 is fitted by the friction between the side surface and the side wall of the supply port 21a.

[0054] In this embodiment, the assembly part 41 is combined with the support skeleton 20a with a large force, and the assembly part 41 is provided with a first lifting hole 411 for the convenience of disassembling the assembly part 41. Specifically, the lifting hole is a screw hole for lifting or disassembling parts. In order to facilitate the disassembly of the assembly part 41, the screw is screwed into the first lifting hole 411, the assembly part 41 is lifted, and the assembly part 41 is disassembled.

[0055] In one embodiment, in order to improve the tightness of the assembly part 41 and the rotor shaft system 10a, the side of the assembly part 41 matched with the rotor shaft system 10a is provided with a positioning stop (indicated in the figure), which is used to form a fit with the rotor shaft system 10a. Specifically, during the tightening of the first threaded adjusting part 42, the assembly part 41 gradually forms a fit with the rotor shaft system 10a through the positioning stop, which improves the tightness of the assembly part 41 and the rotor shaft system 10a, so that the rotor shaft system 10a can form an integral whole with the support skeleton 20a as much as possible, and can move synchronously with the support skeleton 20a, avoiding the subsequent rotation and axial deviation of the rotor shaft system 10a relative to the support skeleton 20a.

[0056] In one embodiment, as shown in Figure 1 The axial adjusting module 50 includes a plurality of second threaded adjusting parts 51, each of which is threadedly connected with the support seat 10 and the support skeleton 20a to support and axially adjust the support skeleton 20a. Specifically, when the support skeleton 20a is assembled to a certain position of the outer positioning ring 30, each second threaded adjusting part 51 is connected with the support seat 10 and the support skeleton 20a to preliminarily adjust the axial position of the support skeleton 20a through the second threaded adjusting part 51.

[0057] In one embodiment, as shown in Figure 1 and 3 The support skeleton 20a is also provided with a plurality of supply adjusting windows 22a in the circumferential direction, and the radial adjusting module 60 includes a plurality of adjusting blocks 61, each of which is provided with a wedge-shaped adjusting end 611. Each adjusting block 61 is arranged in the height direction of each supply adjusting window 22a and is inserted between the rotor shaft system 10a and the support skeleton 20a through the wedge-shaped adjusting end 611 to adjust the rotor shaft system 10a and the support skeleton 20a. Specifically, after the adjustment of the support skeleton 20a is completed, the adjusting block 61 is inserted between the rotor shaft system 10a and the support skeleton 20a through the wedge-shaped adjusting end 611, and the coaxiality of the rotor shaft system 10a and the support skeleton 20a is finely adjusted by knocking the adjusting block 61, so as to ensure the assembly precision of the rotor shaft system 10a and the support skeleton 20a.

[0058] In this embodiment, during the adjustment process, as shown in Figure 1 and 3 Each of the adjustment windows 22a is arranged with six adjustment blocks 61, and each of the adjustment blocks 61 is separately arranged on both sides of the adjustment window 22a and uniformly spaced along the height direction of the adjustment window 22a.

[0059] In this embodiment, four adjustment windows 22a are arranged, and the four adjustment windows 22a are uniformly spaced along the circumferential direction of the support framework 20a.

[0060] In this embodiment, each of the adjustment blocks 61 is further provided with a second lifting hole 612, which facilitates the disassembly of the adjustment block 61.

[0061] In one of the embodiments, as shown in Figure 1 and 3 The assembly tool further includes a locking assembly 70 for fixedly connecting the assembled rotor shaft system 10a and the support framework 20a. Specifically, after the assembly of the rotor shaft system 10a and the support framework 20a is completed, the locking assembly 70 is connected to the rotor shaft system 10a and the support framework 20a, the rotor shaft system 10a and the support framework 20a are locked, and then the assembled rotor shaft system 10a and the support framework 20a can be removed, thereby forming a rotor shaft system 10a and a support framework 20a with high coaxiality.

[0062] In this embodiment, as shown in Figure 1 and 3 The locking assembly 70 includes a plurality of connecting rods 71, each of which is arranged alternately, and the two ends of each of the connecting rods 71 are fixedly connected to the rotor shaft system 10a and the support framework 20a, thereby locking the rotor shaft system 10a and the support framework 20a.

[0063] The embodiment of the present application also provides a motor rotor assembly method, which is executed by the motor rotor assembly tool, as shown in Figure 4 The method comprises the following steps:

[0064] Assembling the rotor shaft system 10a to the inner positioning ring 20;

[0065] Assembling the support framework 20a to the outer positioning ring 30;

[0066] Connecting the axial adjustment module 50 to the support seat 10 and the support framework 20a to adjust the axial position of the support framework 20a;

[0067] Fixedly connecting the axial positioning module 40 to the rotor shaft system 10a and the support framework 20a to position the axial position of the support framework 20a;

[0068] The radial adjustment module 60 is inserted between the rotor shaft 10a and the support frame 20a to fine-tune the coaxiality of the rotor shaft 10a and the support frame 20a.

[0069] Specifically, the preliminary positioning of the coaxiality of the support seat 10 and the support frame 20a by the inner positioning ring 20 and the outer positioning ring 30, the preliminary adjustment of the axial position of the support frame 20a, the fine-tuning positioning, and the fine-tuning assembly process of the coaxiality of the support seat 10 and the support frame 20a can significantly reduce the assembly difficulty of the rotor shaft 10a and the support frame 20a and improve the assembly accuracy of the rotor shaft 10a and the support frame 20a.

[0070] In one of the embodiments, in the step of connecting the support seat 10 and the support frame 20a by the axial adjustment module 50, each second threaded adjustment member 51 is threadedly connected to the support seat 10 and the support frame 20a to adjust the axial position of the support frame 20a.

[0071] In one of the embodiments, in the step of fixedly connecting the rotor shaft 10a and the support frame 20a by the axial positioning module 40, each assembly member 41 is respectively embedded into each assembly opening 21a, and then the first threaded adjustment member 42 is threadedly connected to the assembly member 41 and the rotor shaft 10a to position the axial position of the support frame 20a.

[0072] In one of the embodiments, in the step of inserting the radial adjustment module 60 between the rotor shaft 10a and the support frame 20a, each adjustment block 61 is inserted between the rotor shaft 10a and the support frame 20a through the wedge-shaped adjustment end 611 to fine-tune the coaxiality of the rotor shaft 10a and the support frame 20a.

[0073] In order to better understand the present application, the following will be described in combination with the accompanying drawings Figures 1 to 3The technical scheme of the application is described in detail as follows: during assembling the support framework 20a and the motor rotor shaft system 10a, the motor rotor shaft system 10a is first installed on the inner positioning ring 20 of the support seat 10; the second threaded adjusting member 51 is installed on the upper chassis 11 of the support seat 10, and the second threaded adjusting member 51 is adjusted to a proper length; then the support framework 20a is hoisted above the motor rotor shaft system 10a, and after falling, is placed on the second threaded adjusting member 51, and the support framework 20a is supported and coarsely adjusted in the axial direction by the second threaded adjusting member 51. After the axial coarse adjustment of the support framework 20a is completed, the assembling member 41 is hoisted, the assembling member 41 is assembled to the installation opening 21a in the circumferential direction of the support framework 20a, and is embedded with the rotor shaft system 10a through the positioning stop, then the assembling member 41 and the motor rotor shaft system 10a are fixed by the first threaded adjusting member 42, so as to realize the fine adjustment and fixation of the support framework 20a in the axial direction; then the adjusting blocks 61 are inserted into the gap between the support framework 20a and the motor rotor shaft system 10a through the wedge-shaped adjusting end 611, and the coaxiality of the support framework 20a and the motor rotor shaft system 10a is accurately measured by using a measuring instrument, according to the measurement result, the coaxiality of the support framework 20a and the motor rotor shaft system 10a is finely adjusted by knocking the wedge-shaped adjusting end 611 with a rubber hammer. Finally, the connecting rods 71 at both ends of the support framework 20a are fixed to connect the support framework 20a and the rotor shaft system 10a, the support framework 20a and the rotor shaft system 10a are locked, and the assembly of the support framework 20a and the rotor shaft system 10a is completed.

[0074] During disassembly, the adjusting block 61 is first removed by using the second lifting hole 612 arranged on the adjusting block 61; then the first threaded adjusting member 42 between the assembling member 41 and the rotor shaft system 10a is removed, the assembling member 41 is lifted out by using the first lifting hole 411 on the assembling member 41, the assembling member 41 is hoisted and removed, the second threaded adjusting member 51 is removed, and finally the assembled support framework 20a and the motor rotor shaft system 10a are hoisted away from the tool.

[0075] The specific embodiments of the application described above do not constitute a limitation on the protection scope of the application. Any various other corresponding changes and modifications made according to the technical concept of the application shall be included in the protection scope of the claims of the application.

Claims

1. An electric machine rotor assembly fixture for assisting in the assembly of a rotor shaft and support cage, characterized by, The motor rotor assembly tool comprises: a support base; an inner positioning ring fixed to the support base to position and place the rotor shaft system; an outer positioning ring coaxially arranged outside the inner positioning ring and fixed to the support base to preliminarily position the support framework; an axial adjustment module arranged between the support base and the support framework to adjust the axial position of the support framework; an axial positioning module arranged between the rotor shaft system and the support framework to position the axial position of the support framework; and a radial adjustment module arranged between the rotor shaft system and the support framework to adjust the coaxiality of the rotor shaft system and the support framework. The support framework is provided with a plurality of installation openings in the circumferential direction, the axial positioning module comprises a plurality of assembly pieces and a first threaded adjustment piece, each assembly piece is used for fitting into each installation opening, and the first threaded adjustment piece is threadedly connected with the assembly piece and the rotor shaft system. The side of the assembly piece fitted with the rotor shaft system is provided with a positioning stop, and the positioning stop is used for fitting with the rotor shaft system. The axial adjustment module comprises a plurality of second threaded adjustment pieces, each second threaded adjustment piece is threadedly connected with the support base to support and axially adjust the support framework. The support framework is further provided with a plurality of adjustment windows in the circumferential direction, the radial adjustment module comprises a plurality of adjustment blocks, each adjustment block is provided with a wedge-shaped adjustment end, each adjustment block is arranged in each adjustment window in the height direction of the adjustment window, and is inserted between the rotor shaft system and the support framework through the wedge-shaped adjustment end to adjust the rotor shaft system and the support framework. The assembly tool further comprises a locking assembly for fixedly connecting the assembled rotor shaft system and the support framework.

2. The motor rotor assembly tool of claim 1, wherein, The motor rotor assembly tool is executed by any one of claims 1-2, comprising the following steps:

3. A method of assembling an electric machine rotor, characterized by assembling the rotor shaft system into the inner positioning ring; assembling the support framework into the outer positioning ring; connecting the axial adjustment module between the support base and the support framework to adjust the axial position of the support framework; fixedly connecting the axial positioning module between the rotor shaft system and the support framework to position the axial position of the support framework; inserting the radial adjustment module between the rotor shaft system and the support framework to finely adjust the coaxiality of the rotor shaft system and the support framework. In the step of fixedly connecting the axial adjustment module between the support base and the support framework, each second threaded adjustment piece is threadedly connected with the support base and the support framework to adjust the axial position of the support framework.

4. The method of assembling an electric motor rotor of claim 3, wherein, In the step of fixedly connecting the axial positioning module between the rotor shaft system and the support framework, each assembly piece is respectively fitted into each installation opening, and then the first threaded adjustment piece is threadedly connected with the assembly piece and the rotor shaft system to position the axial position of the support framework.

5. The method of assembling an electric motor rotor of claim 3, wherein, ​ 6. The method of assembling an electric motor rotor of claim 3, wherein, In the step of inserting the radial adjustment module between the rotor shafting and the support frame, each of the adjustment blocks is inserted between the rotor shafting and the support frame through a wedge-shaped adjustment end, and the coaxiality of the rotor shafting and the support frame is finely adjusted.

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