Generator rotor shaft quality detection tool and use method thereof

Abstract

The invention discloses a generator rotor shaft quality detection tool and a use method thereof, and belongs to the technical field of generator rotor shaft quality detection, and the tool comprises a supporting assembly which is used for supporting an adjusting assembly; the adjusting assembly is used for driving the clamping assembly to move to clamp the generator rotor shaft; the rotating assembly is used for driving the generator rotor shaft to rotate to cooperate with the concentricity detection assembly for quality detection; the clamping assembly is used for clamping the generator rotor shaft; the moving assembly is used for guiding and limiting the positioning assembly; and the positioning assembly is used for limiting the mounted clamping assembly. According to the generator rotor shaft clamping device, the first hydraulic telescopic rods are arranged, the first hydraulic telescopic rods are started to drive the clamping rings to move, the positions of the clamping rings are adjusted, the two clamping rings are matched with each other, a generator rotor shaft can be conveniently clamped, workers do not need to manually adjust the clamping rings for clamping, and clamping is convenient.

Description

Technical Field

[0001] The present invention relates to a detection tool, in particular to a generator rotor shaft quality detection tool and a use method thereof, belonging to the technical field of generator rotor shaft quality detection. Background Art

[0002] A generator is a mechanical device that converts mechanical energy into electrical energy. It is driven by a turbine, steam turbine, diesel engine or other power machinery. It converts the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and transmits it to the generator, which then converts it into electrical energy. When the rotor shaft of a marine generator is processed, its outer diameter needs to be tested for concentricity simultaneously.

[0003] However, in actual use, the existing generator rotor shaft quality inspection tool requires the staff to hold the rotor shaft with one hand and rotate the clamping tool with the other hand to clamp the rotor shaft, which makes it inconvenient for the staff to use and cannot easily clamp the rotor shaft. During inspection, the staff needs to manually rotate the rotor shaft and cooperate with the concentricity tester to perform concentricity inspection. Summary of the Invention

[0004] The main purpose of the present invention is to solve the problem that the rotor shaft cannot be clamped conveniently and the staff needs to manually rotate the rotor shaft to cooperate with the concentricity tester for concentricity detection during detection, and to provide a generator rotor shaft quality detection tool and its use method.

[0005] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0006] A generator rotor shaft quality detection tool and a method for using the same, comprising:

[0007] A supporting assembly, used for supporting the adjusting assembly;

[0008] An adjusting assembly is used to drive the clamping assembly to move and clamp the generator rotor shaft;

[0009] The rotating assembly is used to drive the generator rotor shaft to rotate and cooperate with the concentricity detection assembly to perform quality inspection;

[0010] A clamping assembly, used for clamping the generator rotor shaft;

[0011] A moving component, used to guide and limit the positioning component;

[0012] A positioning component, used to limit the position of the clamping component after installation;

[0013] Concentricity detection component, used to detect the concentricity of the generator rotor shaft;

[0014] Sliding assembly, used for guiding and limiting the concentricity detection assembly;

[0015] The lifting assembly is used to adjust the position of the concentricity detection assembly.

[0016] Preferably, the support assembly includes a base plate, support legs, support blocks, connecting rods, connecting blocks and rotating rods, the support legs are installed on the base plate, one end of the support legs is installed with a support block, one end of the support block is installed with a connecting rod, one end of the connecting rod is installed with a connecting block, and the rotating rod is rotatably installed on the base plate.

[0017] Preferably, the adjustment assembly includes a first hydraulic telescopic rod, a first support frame and side legs, the side legs are installed on the connecting block, the first support frame is installed on one end of the side legs, and the side legs are installed on the first support frame.

[0018] Preferably, the rotating assembly includes a rotating motor, a movable plate, a motor frame and a support rod, the output end of the first hydraulic telescopic rod is equipped with a movable plate, the movable plate is equipped with a support rod, one end of the support rod is equipped with a motor frame, and the rotating motor is equipped on the motor frame.

[0019] Preferably, the clamping assembly includes a clamping ring, a mounting block and an insert block. The output end of the rotating motor and one end of the rotating rod are both equipped with mounting blocks. The mounting block is equipped with a clamping ring, and the clamping ring is equipped with an insert block. The mounting block is provided with a slot that cooperates with the insert block.

[0020] Preferably, the moving assembly includes a guide rod, a guide ring, a moving rod and a spring, the guide rod is installed on the mounting block, the guide ring is slidably installed on the guide rod, the moving rod is installed on the guide ring, and the guide ring is connected to the guide rod via a spring.

[0021] Preferably, the positioning assembly includes a pull plate, a positioning block and a handle, a pull plate is installed at one end of the movable rod, a positioning block is installed on the pull plate, positioning grooves that cooperate with the positioning block are provided on the mounting block and the insert block, a handle is installed on the pull plate, and an anti-slip pad is installed on the handle.

[0022] Preferably, the sliding assembly includes a slide plate, a limit rod, a limit ring and a slide bar, the limit rod is installed on the base plate, the limit ring is slidably installed on the limit rod, the slide bar is installed on the limit ring, one end of the slide bar is installed with a slide plate, the concentricity detection assembly includes a concentricity detector, a second hydraulic telescopic rod, a second support frame and a support column, the slide plate is installed with a support column, one end of the support column is installed with a second support frame, the second hydraulic telescopic rod is installed on the second support frame, and the output end of the second hydraulic telescopic rod is installed with a concentricity detector.

[0023] Preferably, the lifting assembly includes a third hydraulic telescopic rod, a connecting frame and a side rod, the side rod is installed on the base plate, one end of the side rod is installed with a connecting frame, the third hydraulic telescopic rod is installed on the connecting frame, and the output end of the third hydraulic telescopic rod is connected to the slide.

[0024] A method for using a generator rotor shaft quality inspection tool, the specific steps are as follows:

[0025] Step 1: Insert the insert block into the mounting block, release the pull plate, the spring will shorten and drive the guide ring to slide on the guide rod, insert the positioning block into the positioning slot to limit the installed clamping ring;

[0026] Step 2: Insert one end of the generator rotor shaft into the clamping ring on the rotating rod. Start the first hydraulic telescopic rod to drive the rotating motor downward, and then drive the clamping ring downward to clamp the generator rotor shaft.

[0027] Step 3: The third hydraulic telescopic rod is started to drive the slide to move to adjust the height of the concentricity detector. The second hydraulic telescopic rod is started to drive the concentricity detector to move and contact the generator rotor shaft. The rotating motor is started to drive the clamping ring to rotate, and then drive the generator rotor shaft to cooperate with the concentricity detector for concentricity detection.

[0028] Beneficial technical effects of the present invention:

[0029] 1. According to the generator rotor shaft quality inspection tool and its use method of the present invention, by providing a first hydraulic telescopic rod, the first hydraulic telescopic rod is started to drive the clamping ring to move, and the position of the clamping ring is adjusted. The two clamping rings cooperate with each other to facilitate clamping of the generator rotor shaft. There is no need for staff to manually adjust the clamping ring for clamping, and clamping is more convenient.

[0030] 2. By setting up a rotating motor, the starting of the rotating motor can easily drive the clamping ring to rotate. When the clamping ring rotates, it can easily drive the generator rotor shaft to cooperate with the concentricity detector to perform concentricity detection. There is no need for the staff to manually rotate the generator rotor shaft, which makes it easier to perform concentricity detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of the skateboard of the present invention;

[0033] Figure 3 This is a schematic structural diagram of a third hydraulic telescopic rod of the present invention;

[0034] Figure 4This is a schematic structural diagram of the second hydraulic telescopic rod of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the concentricity detector of the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the clamping ring of the present invention;

[0037] Figure 7 This is a schematic diagram of the positioning block structure of the present invention;

[0038] Figure 8 It is a schematic diagram of the pull plate structure of the present invention;

[0039] Figure 9 This is a schematic structural diagram of the first hydraulic telescopic rod of the present invention;

[0040] Figure 10 This is a schematic diagram of the plug structure of the present invention;

[0041] Figure 11 It is a schematic diagram of the pull plate structure of the present invention.

[0042] In the figure: 1. base plate; 11. support leg; 12. support block; 13. connecting rod; 14. connecting block; 15. rotating rod; 2. first hydraulic telescopic rod; 21. first support frame; 22. side leg; 3. rotating motor; 31. moving plate; 32. motor frame; 33. support rod; 4. clamping ring; 41. mounting block; 42. insert block; 5. guide rod; 51. guide ring; 52. moving rod; 53. spring; 6. pull plate; 61. positioning block; 62. grip; 7. concentricity tester; 71. second hydraulic telescopic rod; 72. second support frame; 73. support column; 8. slide plate; 81. limit rod; 82. limit ring; 83. slide rod; 9. third hydraulic telescopic rod; 91. connecting frame; 92. side rod. DETAILED DESCRIPTION

[0043] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below with reference to embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0044] like Figures 1-11As shown, the generator rotor shaft quality inspection tool and its use method provided in this embodiment include: a support assembly for supporting the adjustment assembly; an adjustment assembly for driving the clamping assembly to move and clamp the generator rotor shaft; a rotating assembly for driving the generator rotor shaft to rotate and cooperate with the concentricity detection assembly to perform quality inspection; a clamping assembly for clamping the generator rotor shaft; a moving assembly for guiding and limiting the positioning assembly; a positioning assembly for limiting the installed clamping assembly; a concentricity detection assembly for performing concentricity inspection on the generator rotor shaft; and a sliding assembly for guiding and limiting the concentricity detection assembly.The lifting assembly is used to adjust the position of the concentricity detection assembly. The support assembly includes a base plate 1, a support leg 11, a support block 12, a connecting rod 13, a connecting block 14 and a rotating rod 15. The support leg 11 is installed on the base plate 1, and one end of the support leg 11 is installed with a support block 12. One end of the support block 12 is installed with a connecting rod 13, and one end of the connecting rod 13 is installed with a connecting block 14. The rotating rod 15 is rotatably installed on the base plate 1, and the adjustment assembly includes a first hydraulic telescopic rod 2, a first support frame 21 and a side leg 22. The side leg 22 is installed on the connecting block 14, and one end of the side leg 22 is installed with the first support frame 21. The support frame 21 is equipped with a side leg 22, and the rotating assembly includes a rotating motor 3, a moving plate 31, a motor frame 32 and a support rod 33. The output end of the first hydraulic telescopic rod 2 is equipped with a moving plate 31, and the supporting rod 33 is installed on the moving plate 31. One end of the supporting rod 33 is equipped with a motor frame 32, and the motor frame 32 is equipped with a rotating motor 3. The clamping assembly includes a clamping ring 4, a mounting block 41 and an insert block 42. The output end of the rotating motor 3 and one end of the rotating rod 15 are both equipped with a mounting block 41, a clamping ring 4 is installed on the mounting block 41, and an insert block 42 is installed on the clamping ring 4. The mounting block 41 is provided with a fixing plate 42. The slots cooperate with each other, and the rotating rod 15 is connected to the base plate 1 through the bearing rotation. By setting the first hydraulic telescopic rod 2, the first hydraulic telescopic rod 2 is started to drive the clamping ring 4 to move, and the position of the clamping ring 4 is adjusted. The two clamping rings 4 cooperate with each other, which can facilitate the clamping of the generator rotor shaft. There is no need for the staff to manually adjust the clamping ring 4 for clamping, and the clamping is more convenient. By setting the rotating motor 3, the rotating motor 3 is started to facilitate the rotation of the clamping ring 4. When the clamping ring 4 rotates, it is easy to drive the generator rotor shaft to cooperate with the concentricity detector 7, and concentricity detection can be performed without the staff manually rotating. The generator rotor shaft is driven, thereby facilitating concentricity testing. The support legs 11, support blocks 12, connecting rods 13, connecting blocks 14, first support frame 21, and side legs 22 cooperate to support the first hydraulic telescopic rod 2. The motor frame 32 cooperates with the support rods 33 to support the rotating motor 3. By providing an insert block 42 that engages with the slot, pulling the clamping ring 4 and sliding the insert block 42 out of the slot facilitates the removal and replacement of clamping rings 4 of different sizes, thereby enabling the clamping ring 4 to clamp and limit the position of generator rotor shafts of different sizes.

[0045] In this embodiment, if Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11As shown, the moving assembly includes a guide rod 5, a guide ring 51, a moving rod 52 and a spring 53. The guide rod 5 is installed on the mounting block 41. The guide ring 51 is slidably installed on the guide rod 5. The moving rod 52 is installed on the guide ring 51. The guide ring 51 is connected to the guide rod 5 through the spring 53. By setting the guide rod 5, the guide ring 51 and the moving rod 52 to cooperate with each other, it is convenient to guide and limit the positioning block 61. The positioning assembly includes a pull plate 6, a positioning block 61 and a handle 62. One end of the moving rod 52 is installed with a pull plate Plate 6, a positioning block 61 is installed on the pull plate 6, and a positioning groove that cooperates with the positioning block 61 is opened on the installation block 41 and the insertion block 42. A handle 62 is installed on the pull plate 6, and an anti-slip pad is installed on the handle 62. Loosen the pull plate 6, the spring 53 shortens and drives the guide ring 51 to slide on the guide rod 5, and insert the positioning block 61 into the positioning groove, which can limit the installed clamping ring 4. By setting the handle 62, it is easy to pull the pull plate 6, and by setting the anti-slip pad, it is easy to increase the friction of the pull plate 6.

[0046] In this embodiment, if Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the sliding assembly includes a slide plate 8, a limit rod 81, a limit ring 82 and a slide bar 83. The limit rod 81 is installed on the bottom plate 1, and the limit ring 82 is slidably installed on the limit rod 81. The limit ring 82 is installed on the slide bar 83, and one end of the slide bar 83 is installed with the slide plate 8. The concentricity detection assembly includes a concentricity detector 7, a second hydraulic telescopic rod 71, a second support frame 72 and a support column 73. The support column 73 is installed on the slide plate 8, and the second support frame 72 is installed on the second support frame 72. The second hydraulic telescopic rod 71 is installed on the second support frame 72, and the output end of the second hydraulic telescopic rod 71 is installed with the concentricity detector 7. By arranging the slide plate 8, the limit rod 81, the limit ring 82 and the slide bar 83 to cooperate with each other, the concentricity detector 7 can be easily checked. Guide limit, the second hydraulic telescopic rod 71 is started to drive the concentricity detector 7 to move and contact the generator rotor shaft, so as to detect the generator rotor shaft. By setting the support column 73 and the second support frame 72 to cooperate with each other, it is convenient to support the second hydraulic telescopic rod 71. The lifting assembly includes a third hydraulic telescopic rod 9, a connecting frame 91 and a side rod 92. The side rod 92 is installed on the base plate 1, and the connecting frame 91 is installed at one end of the side rod 92. The third hydraulic telescopic rod 9 is installed on the connecting frame 91. The output end of the third hydraulic telescopic rod 9 is connected to the slide 8. By setting the third hydraulic telescopic rod 9, the height of the concentricity detector 7 can be easily adjusted. By setting the connecting frame 91 and the side rod 92 to cooperate with each other, the third hydraulic telescopic rod 9 can be easily supported.

[0047] The specific steps for using the generator rotor shaft quality inspection tool are as follows:

[0048] Step 1: Insert the insert block 42 into the mounting block 41, release the pull plate 6, and the spring 53 will shorten to drive the guide ring 51 to slide on the guide rod 5. Insert the positioning block 61 into the positioning groove to limit the installed clamping ring 4.

[0049] Step 2: Insert one end of the generator rotor shaft into the clamping ring 4 on the rotating rod 15. Start the first hydraulic telescopic rod 2 to drive the rotating motor 3 to descend, and then drive the clamping ring 4 to descend to clamp the generator rotor shaft.

[0050] Step 3: The third hydraulic telescopic rod 9 is started to drive the slide 8 to move to adjust the height of the concentricity detector 7. The second hydraulic telescopic rod 71 is started to drive the concentricity detector 7 to move and contact the generator rotor shaft. The rotating motor 3 is started to drive the clamping ring 4 to rotate, thereby driving the generator rotor shaft to cooperate with the concentricity detector 7 for concentricity detection.

[0051] In summary, in this embodiment, according to the generator rotor shaft quality inspection tool and its use method of this embodiment, by setting the first hydraulic telescopic rod 2, the first hydraulic telescopic rod 2 is started to drive the clamping ring 4 to move, and the position of the clamping ring 4 is adjusted. The two clamping rings 4 cooperate with each other, which can facilitate the clamping of the generator rotor shaft. There is no need for the staff to manually adjust the clamping ring 4 for clamping, and the clamping is more convenient. By setting the rotating motor 3, the rotating motor 3 is started to facilitate the rotation of the clamping ring 4. When the clamping ring 4 rotates, it is easy to drive the generator rotor shaft to cooperate with the concentricity inspection The tester 7 can perform concentricity detection without the need for the staff to manually rotate the generator rotor shaft, thereby facilitating the concentricity detection. By arranging the support legs 11, the support blocks 12, the connecting rods 13, the connecting blocks 14, the first support frame 21 and the side legs 22 to cooperate with each other, it is convenient to support the first hydraulic telescopic rod 2. By arranging the motor frame 32 and the support rod 33 to cooperate with each other, it is convenient to support the rotating motor 3. By arranging the plug block 42 to engage with the slot, the clamping ring 4 is pulled to slide the plug block 42 out of the slot, which can facilitate the disassembly and replacement of different sizes. The clamping ring 4 of different sizes can be used to clamp and limit the generator rotor shafts of different sizes. By setting the guide rod 5, the guide ring 51 and the moving rod 52 to cooperate with each other, it is convenient to guide and limit the positioning block 61. The pull plate 6 is loosened, and the spring 53 is shortened to drive the guide ring 51 to slide on the guide rod 5. The positioning block 61 is inserted into the positioning groove, which can limit the installed clamping ring 4. By setting the handle 62, it is convenient to pull the pull plate 6. By setting the anti-slip pad, it is convenient to increase the friction of the pull plate 6. By setting the slide plate 8 and the limiting rod 81 , the limiting ring 82 and the sliding rod 83 cooperate with each other, which can facilitate the guiding and limiting of the concentricity detector 7. The second hydraulic telescopic rod 71 is started to drive the concentricity detector 7 to move and contact the generator rotor shaft, so as to detect the generator rotor shaft. By setting the support column 73 and the second support frame 72 to cooperate with each other, it is convenient to support the second hydraulic telescopic rod 71. By setting the third hydraulic telescopic rod 9, it is convenient to adjust the height of the concentricity detector 7. By setting the connecting frame 91 and the side rod 92 to cooperate with each other, it is convenient to support the third hydraulic telescopic rod 9.

[0052] The above is only a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which fall within the scope of protection of the present invention.

Claims

1. A generator rotor shaft quality inspection tool, characterized in that: include: A supporting assembly, used for supporting the adjusting assembly; An adjusting assembly is used to drive the clamping assembly to move and clamp the generator rotor shaft; The rotating assembly is used to drive the generator rotor shaft to rotate and cooperate with the concentricity detection assembly to perform quality inspection; A clamping assembly, used for clamping the generator rotor shaft; A moving component, used to guide and limit the positioning component; A positioning component, used to limit the position of the clamping component after installation; Concentricity detection component, used to detect the concentricity of the generator rotor shaft; Sliding assembly, used for guiding and limiting the concentricity detection assembly; The lifting assembly is used to adjust the position of the concentricity detection assembly.

2. A generator rotor shaft quality inspection tool according to claim 1, characterized in that: The support assembly comprises a base plate (1), a support leg (11), a support block (12), a connecting rod (13), a connecting block (14) and a rotating rod (15); the support leg (11) is mounted on the base plate (1); one end of the support leg (11) is mounted on the support block (12); one end of the support block (12) is mounted on the connecting rod (13); one end of the connecting rod (13) is mounted on the connecting block (14); and the rotating rod (15) is rotatably mounted on the base plate (1).

3. A generator rotor shaft quality inspection tool according to claim 2, characterized in that: The adjustment assembly comprises a first hydraulic telescopic rod (2), a first support frame (21) and a side leg (22); the side leg (22) is mounted on the connecting block (14); one end of the side leg (22) is mounted on the first support frame (21); and the side leg (22) is mounted on the first support frame (21).

4. A generator rotor shaft quality inspection tool according to claim 3, characterized in that: The rotating assembly comprises a rotating motor (3), a moving plate (31), a motor frame (32) and a support rod (33); the output end of the first hydraulic telescopic rod (2) is mounted with the moving plate (31); the support rod (33) is mounted on the moving plate (31); one end of the support rod (33) is mounted with the motor frame (32); and the rotating motor (3) is mounted on the motor frame (32).

5. The generator rotor shaft quality inspection tool according to claim 4, characterized in that: The clamping assembly comprises a clamping ring (4), a mounting block (41) and an inserting block (42); the output end of the rotating motor (3) and one end of the rotating rod (15) are both mounted with the mounting block (41); the clamping ring (4) is mounted on the mounting block (41); the inserting block (42) is mounted on the clamping ring (4); and the mounting block (41) is provided with a slot that cooperates with the inserting block (42).

6. A generator rotor shaft quality inspection tool according to claim 5, characterized in that: The moving assembly comprises a guide rod (5), a guide ring (51), a moving rod (52) and a spring (53); the guide rod (5) is mounted on the mounting block (41); the guide ring (51) is slidably mounted on the guide rod (5); the moving rod (52) is mounted on the guide ring (51); and the guide ring (51) is connected to the guide rod (5) via a spring (53).

7. The generator rotor shaft quality inspection tool according to claim 6, characterized in that: The positioning assembly comprises a pull plate (6), a positioning block (61) and a handle (62); a pull plate (6) is installed at one end of the moving rod (52); a positioning block (61) is installed on the pull plate (6); a positioning groove that cooperates with the positioning block (61) is provided on the mounting block (41) and the inserting block (42); a handle (62) is installed on the pull plate (6); and an anti-slip pad is installed on the handle (62).

8. The generator rotor shaft quality inspection tool according to claim 7, characterized in that: The sliding assembly comprises a slide plate (8), a limiting rod (81), a limiting ring (82) and a slide bar (83); the limiting rod (81) is installed on the base plate (1); the limiting ring (82) is slidably installed on the limiting rod (81); the slide bar (83) is installed on the limiting ring (82); one end of the slide bar (83) is installed with the slide plate (8); the concentricity detection assembly comprises a concentricity detector (7), a second hydraulic telescopic rod (71), a second support frame (72) and a support column (73); the slide plate (8) is installed with the support column (73); one end of the support column (73) is installed with the second support frame (72); the second hydraulic telescopic rod (71) is installed on the second support frame (72); the output end of the second hydraulic telescopic rod (71) is installed with the concentricity detector (7).

9. The generator rotor shaft quality inspection tool according to claim 8, characterized in that: The lifting assembly comprises a third hydraulic telescopic rod (9), a connecting frame (91) and a side rod (92); the side rod (92) is mounted on the base plate (1); one end of the side rod (92) is mounted on the connecting frame (91); the third hydraulic telescopic rod (9) is mounted on the connecting frame (91); and the output end of the third hydraulic telescopic rod (9) is connected to the slide plate (8).

10. A method for using the generator rotor shaft quality inspection tool according to claims 1-9, characterized in that: The specific steps are as follows: Step 1: Insert the insert block (42) into the mounting block (41), loosen the pull plate (6), shorten the spring (53) and drive the guide ring (51) to slide on the guide rod (5), insert the positioning block (61) into the positioning groove, and limit the installed clamping ring (4); Step 2: insert one end of the generator rotor shaft into the clamping ring (4) on the rotating rod (15), start the first hydraulic telescopic rod (2) to drive the rotating motor (3) to descend, and then drive the clamping ring (4) to descend to clamp the generator rotor shaft; Step 3: The third hydraulic telescopic rod (9) is started to drive the slide plate (8) to move and adjust the height of the concentricity detector (7). The second hydraulic telescopic rod (71) is started to drive the concentricity detector (7) to move and contact the generator rotor shaft. The rotating motor (3) is started to drive the clamping ring (4) to rotate, thereby driving the generator rotor shaft to cooperate with the concentricity detector (7) to perform concentricity detection.

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