Gas compressor rotor blade surface defect detection device and detection method thereof

Abstract

The invention discloses a gas compressor rotor blade surface defect detection device and a detection method thereof, and belongs to the technical field of gas compressor rotor blade detection. The gas compressor rotor blade surface defect detection device comprises a detection platform, an electric index plate clamping device, a tip cone stopping device and a flaw detection device, the electric index plate clamping device and the tip cone stopping device are matched to perform axial fixation and precise index driving on the two ends of the to-be-tested compressor rotor; the flaw detection device is used for detecting surface defects of the rotor blade of the gas compressor on the basis of an ultrasonic flaw detection principle; compared with existing artificial flaw detection of aero-engine compressor rotor blades, the method can accurately collect, process and analyze the surface defects of each stage of blade of the detected compressor rotor, can realize the positioning of each stage of blade and the traceability of the detection result, ensures the integrity of the measurement result, and improves the detection accuracy. The problem that the detection result is influenced by subjective factors in the existing artificial flaw detection of the aero-engine compressor rotor blade is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of compressor rotor blade detection, and in particular relates to a compressor rotor blade surface defect detection device and a detection method thereof. Background Art

[0002] Aircraft engines are known as the jewel in the crown of modern industry, and compressors are one of the main components of aircraft engines. The compressor is a mechanical device that transmits mechanical energy to the gas and completes the gas working medium compression process in the engine's thermal cycle to increase the gas pressure. As the core parts of the engine, the compressor blades account for about 30% of the entire machine. The manufacturing quality of the blades (dimensional accuracy, form and position tolerances and surface quality of complex surfaces) directly affects the aerodynamic performance and service life of the engine. The characteristics of thin-walled parts of aviation blades and their complex spatial geometric shapes affect the processing accuracy and surface quality of the blades to a certain extent. How to detect whether the blades have defects and ensure the high-quality production of blades has become an important issue that needs to be solved in the current aviation manufacturing industry. At present, the flaw detection of aircraft engine compressor rotor blades is mainly carried out by manually operated portable ultrasonic surface wave flaw detectors. There are technical problems such as low degree of automation and the test results are affected by subjective factors. The detection efficiency and intelligence level need to be further improved.

[0003] Therefore, conducting research and application of high-precision detection equipment and methods that collaborate with multiple technologies is crucial to ensuring the aerodynamic performance, safety and reliability of aircraft engines, and is of great significance to promoting the high-level and high-quality development of enterprises. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention aims to provide a compressor rotor blade surface defect detection device and a detection method thereof, which solves the problems of low automation, detection results being affected by subjective factors and low detection efficiency in the existing manual flaw detection of aircraft engine compressor rotor blades.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows: On the one hand, a compressor rotor blade surface defect detection device is provided, which includes a detection platform, on which an electric indexing plate clamping device, a top cone stopper device and a flaw detection device are arranged; The two ends of the compressor rotor shaft are respectively connected to the electric indexing plate clamping device and the top cone stopper device, and the electric indexing plate clamping device and the top cone stopper device drive the compressor rotor to rotate and move axially; The flaw detection device includes a column arranged on one side of the compressor rotor, the bottom of the column is connected to the upper end surface of the detection platform, the top of the column is provided with a support arm, the end of the support arm is provided with a vertical movably connected to a pressing rod, the bottom end of the pressing rod is provided with a flaw detection probe and an ultrasonic flaw detector host electrically connected to each other, when the pressing rod is pressed down, the flaw detection probe is driven to perform blade surface defect detection on the compressor rotor blade, and the ultrasonic flaw detector host displays the surface defects of the compressor rotor blade.

[0006] Furthermore, two rotating support devices are arranged between the electric dividing plate clamping device and the top cone stop device, and a pair of supporting wheels are rotatably arranged on the top of the two rotating support devices. The two ends of the compressor rotor shaft are respectively arranged in the two pairs of supporting wheels, the axis of the supporting wheel is parallel to the axis of the compressor rotor shaft, and the circumferential outer wall of the supporting wheel is in contact with the circumferential outer wall of the compressor rotor shaft.

[0007] The setting of two rotating support devices realizes vertical rolling support for both ends of the compressor rotor shaft, which is convenient for the electric dividing plate clamping device to drive the compressor rotor shaft to rotate, so as to perform surface defect detection on different blades of the compressor rotor shaft at multiple angles.

[0008] Furthermore, as a specific setting method of the electric dividing plate clamping device, the electric dividing plate clamping device includes a first support seat, the bottom of the first support seat is fixedly connected to the detection platform, the top of the first support seat is provided with a first rolling screw module, the first rolling screw module is provided with an electric dividing plate, the electric dividing plate is provided with a three-claw chuck for clamping the spline at one end of the compressor rotor shaft, and the first rolling screw module drives the electric dividing plate to move along the axial direction of the compressor rotor shaft.

[0009] Furthermore, as a specific setting method of the top cone stop device, the top cone stop device includes a second support seat, the bottom of the second support seat is fixedly connected to the detection platform, the top of the second support seat is provided with a second rolling screw module, the second rolling screw module is provided with a top cone, the top cone is in tight contact with the end face of the other end of the compressor rotor shaft, the second rolling screw module drives the top cone to move along the axis direction of the compressor rotor shaft; the axis of the electric dividing plate coincides with the axis of the top cone.

[0010] The electric indexing plate clamping device and the top cone stopper device cooperate to axially fix and precisely index the two ends of the compressor rotor to be tested.

[0011] Furthermore, each of the rotating support devices includes a support frame, the bottom of the support frame is fixedly connected to the detection platform, a sliding support is vertically slidably arranged on the support frame, a driving device for driving the sliding support to reciprocate in the vertical direction is arranged at the bottom of the support frame, and a pair of supporting wheels are rotatably arranged on the top of the sliding support. The purpose of the driving device is to adjust the position of the supporting wheel in the vertical direction so as to provide vertical rolling support for compressor rotors of different models.

[0012] Furthermore, the bottom of the column is connected to the upper end surface of the detection platform through a third rolling screw module, and the third rolling screw module drives the column to move along the axis of the compressor rotor shaft.

[0013] The third rolling screw module is provided to realize the movement of the position of the flaw detection probe in the flaw detection device, so as to facilitate the surface defect detection of blades at different positions on the compressor rotor.

[0014] Further, as a specific setting mode of the flaw detection device, the flaw detection probe includes two ultrasonic probes which are horizontally spaced and electrically connected to the ultrasonic flaw detector host; A mounting ring is provided on the circumferential outer wall of the pressing rod, and a plurality of return springs are provided on the mounting ring and the upper end surface of the support arm; a rotating electric cylinder is provided inside the bottom end of the pressing rod, the axis of the output shaft of the rotating electric cylinder coincides with the axis of the pressing rod and a fixing seat is provided on the output end of the rotating electric cylinder, a bidirectional electric cylinder is provided on the fixing seat, the two output shafts of the bidirectional electric cylinder are arranged horizontally, a connecting plate is fixed on each of the two output shafts of the bidirectional electric cylinder, and the bidirectional electric cylinder drives the two connecting plates to move toward or away from each other at the same time; the two ultrasonic probes are respectively arranged on the inner walls of the two connecting plates.

[0015] The setting of multiple return springs ensures the rebound of the pressing rod; the rotary electric cylinder is used to adjust the rotation angle of the two ultrasonic probes to meet the measurement needs of blades of various models and sizes; at the same time, when inspecting the blades, the bidirectional electric cylinder drives the two ultrasonic probes to closely adhere to the intake and exhaust edge contour surfaces on both sides of the blade to be tested, thereby improving the accuracy of blade surface defect detection.

[0016] Furthermore, the first rolling screw module, the second rolling screw module and the third rolling screw module each include two linear guide rails arranged horizontally at intervals, a rolling screw drive module is arranged between the two linear guide rails, a movable bracket is connected to the rolling screw drive module, and the two ends of the movable bracket are respectively slidably matched with the two linear guide rails, and the rolling screw drive module drives the movable bracket to slide along the length direction of the linear guide rails; the bottom of the electric dividing plate, the top cone and the column are all fixedly connected to the upper end surface of the movable bracket.

[0017] Furthermore, the driving device is a worm gear screw lift, the top of which is fixedly connected to the sliding support. The worm gear screw lift has lifting and self-locking functions, which are used to adjust the height of the support frame and prevent the support frame from self-falling due to bearing the compressor rotor to be tested.

[0018] On the other hand, the present invention also provides a detection method of a compressor rotor blade surface defect detection device, comprising: Step 1, fix the compressor rotor to be tested: place the compressor rotor to be tested on two rotating support devices, adjust the positions of the electric indexing plate clamping device and the top cone stopper device, the electric indexing plate clamping device clamps the spline at one end of the compressor rotor shaft, and the top cone stopper device presses against the end surface of the other end of the compressor rotor shaft to position the compressor rotor to be tested; Step 2, select the blades on the compressor rotor to be tested: the electric indexing plate clamping device drives the compressor rotor to be tested to rotate to the testing position; Step 3: Adjust the flaw detection probe: adjust the position of the column and the angle of the flaw detection probe to align the flaw detection probe with the inlet and exhaust edges of the blades on the compressor rotor to be tested; Step 4, perform surface defect detection on the selected blade: press down the pressing rod to make the flaw detection probe close to the edges of the inlet and exhaust profiles on both sides of the blade to be tested, start the flaw detection probe to collect and process the defect characteristics of the blade rotor to be tested, obtain the damage information on the blade surface, and upload the information to the ultrasonic flaw detector host to complete the surface defect detection of the compressor rotor blade to be tested at the current detection position; Step 5, perform surface defect detection on the next blade: the electric indexing plate clamping device drives the compressor rotor to be tested to rotate to the next testing position, and repeats steps 2 to 4 to perform surface defect detection on the compressor rotor blade to be tested at the next testing position; Step 6, perform surface defect detection on all blades: Repeat step 5 until all blades of the compressor rotor to be tested are tested for surface defects, then reset the electric indexing plate clamping device, top cone stop device and flaw detection device, and disassemble the compressor rotor to be tested.

[0019] The beneficial effects of the present invention are: 1. Compared with the existing manual flaw detection of aircraft engine compressor rotor blades, the compressor rotor blade surface defect detection device and detection method of the present invention can improve the degree of automated detection of compressor rotor blade surface defects and improve the production efficiency and detection accuracy of the existing detection process.

[0020] 2. The present invention provides a compressor rotor blade surface defect detection device and detection method. By pressing a pressing rod downward to drive the flaw detection detection probe to detect the surface defects of the compressor rotor blades, the device can accurately collect, process and analyze the surface defects of blades at all levels of the tested compressor rotor, and can realize the positioning and detection of blades at all levels. The traceability of the detection results can ensure the integrity of the measurement results, thus solving the problem that the detection results of existing manual flaw detection of aircraft engine compressor rotor blades are affected by subjective factors.

[0021] 3. A compressor rotor blade surface defect detection device and detection method in the present invention can realize precise positioning and rotation of the blade rotor through the linkage control of the electric dividing plate clamping device, the top cone stop device and the flaw detection device, and can accurately collect, process and analyze the surface defects of blades of each level of the compressor rotor under test, thereby ensuring the integrity of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional structure diagram of a compressor rotor blade surface defect detection device Figure 1 .

[0023] Figure 2 A three-dimensional structure diagram of a compressor rotor blade surface defect detection device Figure 2 .

[0024] Figure 3 It is a schematic diagram of the enlarged structure of the connection between the pressing rod and the supporting arm.

[0025] Figure 4 It is a schematic diagram of the structure of the third rolling screw module.

[0026] Figure 5 It is an enlarged structural schematic diagram of the electric dividing plate clamping device.

[0027] Figure 6 It is an enlarged structural schematic diagram of the top cone stop device.

[0028] Figure 7 It is a schematic diagram of the enlarged structure of a single rotating support device.

[0029] Among them, 1. Compressor rotor; 2. Testing platform; 3. Electric indexing plate clamping device; 31. First support seat; 32. First rolling screw module; 33. Electric indexing plate; 34. Three-claw chuck; 4. Top cone stopper; 41. Second support seat; 42. Second rolling screw module; 43. Top cone; 5. Flaw detection device; 51. Column; 52. Support arm; 53. Press rod; 54. Flaw detection probe; 541. Ultrasonic probe; 55. Ultrasonic flaw detector host; 56. Third rolling screw module; 57. Mounting ring; 58. Reset spring; 59. Rotary electric cylinder; 510. Fixed seat; 511. Bidirectional electric cylinder; 512. Connecting plate; 6. Rotating support device; 61. Support wheel; 62. Support frame; 63. Sliding support; 64. Driving device; 7. Linear guide; 8. Screw drive module; 9. Mobile bracket. DETAILED DESCRIPTION

[0030] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0031] like Figure 1 to Figure 7 As shown, the present invention provides a compressor rotor blade surface defect detection device, which includes a detection platform 2, on which an electric indexing plate clamping device 3, a top cone stopper device 4 and a flaw detection device 5 are provided; Both ends of the compressor rotor 1 shaft are connected to the electric indexing plate clamping device 3 and the top cone stopper device 4 respectively, and the electric indexing plate clamping device 3 and the top cone stopper device 4 drive the compressor rotor 1 to rotate and move axially; The flaw detection device 5 includes a column 51 arranged on one side of the compressor rotor 1, the bottom of the column 51 is connected to the upper end surface of the detection platform 2, a support arm 52 is arranged on the top of the column 51, and a pressing rod 53 is arranged at the end of the support arm 52, and a flaw detection probe 54 and an ultrasonic flaw detector host 55 which are electrically connected to each other are arranged at the bottom end of the pressing rod 53. After the pressing rod 53 is pressed down, the flaw detection probe 54 is driven to detect the surface defects of the blades of the compressor rotor 1, and the ultrasonic flaw detector host 55 displays the surface defects of the blades of the compressor rotor 1. Preferably, the ultrasonic flaw detector host 55 can also store the surface defect detection results of the blades of the compressor rotor 1, so as to realize the positioning of the blades at all levels and the traceability of the detection results, which is convenient for subsequent retrieval and viewing, and ensures the integrity of the measurement results.

[0032] like Figure 1 and Figure 7As shown, two rotating support devices 6 are arranged between the electric dividing plate clamping device 3 and the top cone stop device 4, and a pair of supporting wheels 61 are rotatably arranged on the top of the two rotating support devices 6, and the two ends of the rotating shaft of the compressor rotor 1 are respectively arranged in the two pairs of supporting wheels 61, and the axis of the supporting wheel 61 is parallel to the axis of the rotating shaft of the compressor rotor 1, and the circumferential outer wall of the supporting wheel 61 contacts the circumferential outer wall of the rotating shaft of the compressor rotor 1.

[0033] The two rotating support devices 6 are provided to realize vertical rolling support for both ends of the compressor rotor 1 shaft, so that the electric dividing plate clamping device 3 drives the compressor rotor 1 shaft to rotate, so as to perform surface defect detection on different blades of the compressor rotor 1 shaft at multiple angles.

[0034] Specifically, each of the rotating support devices 6 includes a support frame 62, the bottom of the support frame 62 is fixedly connected to the detection platform 2, a sliding support 63 is vertically slidably arranged on the support frame 62, a driving device 64 for driving the sliding support 63 to reciprocate in the vertical direction is arranged at the bottom of the support frame 62, and a pair of supporting wheels 61 are rotatably arranged on the top of the sliding support 63. The purpose of the driving device 64 is to adjust the position of the supporting wheel 61 in the vertical direction so as to provide vertical rolling support for compressor rotors 1 of different models.

[0035] Preferably, but not limited to, the driving device 64 is a worm gear screw lift, the top of the worm gear screw lift is fixedly connected to the sliding support 63, and the worm gear screw lift has lifting and self-locking functions, which are used to adjust the height of the support frame 62 and prevent the support frame 62 from self-falling due to bearing the compressor rotor 1 to be tested.

[0036] Specifically, Figure 1 , Figure 5 and Figure 6 As shown, as a specific setting method of the electric dividing plate clamping device 3, the electric dividing plate clamping device 3 includes a first support seat 31, the bottom of the first support seat 31 is fixedly connected to the detection platform 2, and the top of the first support seat 31 is provided with a first rolling screw module 32, and the first rolling screw module 32 is provided with an electric dividing plate 33, and the electric dividing plate 33 is provided with a three-claw chuck 34 for clamping the spline at one end of the compressor rotor 1 shaft, and the first rolling screw module 32 drives the electric dividing plate 33 to move along the axis direction of the compressor rotor 1 shaft.

[0037] Furthermore, as a specific setting method of the top cone stop device 4, the top cone stop device 4 includes a second support seat 41, the bottom of the second support seat 41 is fixedly connected to the detection platform 2, the top of the second support seat 41 is provided with a second rolling screw module 42, and the second rolling screw module 42 is provided with a top cone 43, the top cone 43 is in tight contact with the end face of the other end of the compressor rotor 1 shaft, and the second rolling screw module 42 drives the top cone 43 to move along the axis of the compressor rotor 1 shaft; the axis of the electric dividing plate 33 coincides with the axis of the top cone 43.

[0038] The electric indexing plate clamping device 3 and the top cone stopper device 4 cooperate to axially fix and precisely index the two ends of the compressor rotor 1 to be tested.

[0039] Furthermore, if Figure 2 and Figure 3 As shown, the bottom of the column 51 is connected to the upper end surface of the detection platform 2 through the third rolling screw module 56, and the third rolling screw module 56 drives the column 51 to move along the axis of the compressor rotor 1.

[0040] The third rolling screw module 56 is provided to realize the movement of the position of the flaw detection probe 54 in the flaw detection device 5 so as to facilitate the surface defect detection of blades at different positions on the compressor rotor 1.

[0041] Specifically, as a specific setting mode of the flaw detection device 5, the flaw detection probe 54 includes two ultrasonic probes 541 which are arranged horizontally at intervals and electrically connected to the ultrasonic flaw detector host 55; a mounting ring 57 is arranged on the circumferential outer wall of the pressing rod 53, and a plurality of return springs 58 are arranged on the mounting ring 57 and the upper end surface of the support arm 52; a rotating electric cylinder 59 is arranged inside the bottom end of the pressing rod 53, the axis of the output shaft of the rotating electric cylinder 59 coincides with the axis of the pressing rod 53, and a fixing seat 510 is arranged on the output end of the rotating electric cylinder 59, and a bidirectional electric cylinder 511 is arranged on the fixing seat 510, and the two output shafts of the bidirectional electric cylinder 511 are arranged horizontally, and a connecting plate 512 is fixed on the two output shafts of the bidirectional electric cylinder 511, and the bidirectional electric cylinder 511 drives the two connecting plates 512 to move toward or away from each other at the same time; the two ultrasonic probes 541 are respectively arranged on the inner walls of the two connecting plates 512, so that the two sides of the blade edge can be measured at the same time, thereby improving the detection efficiency.

[0042] The setting of multiple return springs 58 ensures the rebound of the pressing rod 53; the rotating electric cylinder 59 is used to adjust the rotation angle of the two ultrasonic probes 541 to meet the measurement requirements of blades of various models and sizes; at the same time, when inspecting the blades, the bidirectional electric cylinder 511 drives the two ultrasonic probes 541 to closely adhere to the intake and exhaust edge contour surfaces on both sides of the blade to be tested, thereby improving the accuracy of blade surface defect detection.

[0043] In this embodiment, the first rolling screw module 32, the second rolling screw module 42 and the third rolling screw module 56 all include two linear guide rails 7 arranged horizontally at intervals, a rolling screw drive module 8 is arranged between the two linear guide rails 7, a mobile bracket 9 is connected to the rolling screw drive module 8, and the two ends of the mobile bracket 9 are respectively slidably matched with the two linear guide rails 7, and the rolling screw drive module 8 drives the mobile bracket 9 to slide along the length direction of the linear guide rails 7; the bottom of the electric indexing plate 33, the top cone 43 and the column 51 are all fixedly connected to the upper end surface of the mobile bracket 9. It is worth mentioning that the rolling screw drive module 8 belongs to the existing technology, and the connection relationship and selection of the rolling screw drive module 8 are existing mature technologies, so the circuit structure and working principle between the electrical components are not repeated here.

[0044] Furthermore, the driving device 64 is a worm gear screw lift, the top of which is fixedly connected to the sliding support 63. The worm gear screw lift has lifting and self-locking functions, which are used to adjust the height of the support frame 62 and prevent the support frame 62 from self-falling due to bearing the compressor rotor 1 to be tested.

[0045] On the other hand, the present invention also provides a detection method of a compressor rotor blade surface defect detection device, comprising: Step 1, fix the compressor rotor 1 to be tested: place the compressor rotor 1 to be tested on two rotating support devices 6, adjust the positions of the electric indexing plate clamping device 3 and the top cone stopper device 4, the electric indexing plate clamping device 3 clamps the spline at one end of the compressor rotor 1 shaft, and the top cone stopper device 4 presses against the end surface of the other end of the compressor rotor 1 shaft to position the compressor rotor 1 to be tested; Step 2, select the blades on the compressor rotor 1 to be tested: the electric indexing plate clamping device 3 drives the compressor rotor 1 to be tested to rotate to the testing position; Step 3, adjusting the flaw detection probe 54: adjusting the position of the column 51 and adjusting the angle of the flaw detection probe 54, so that the flaw detection probe 54 is aligned with the inlet and exhaust edges of the blades on the compressor rotor 1 to be tested; Step 4, perform surface defect detection on the selected blade: press down the pressing rod 53, so that the flaw detection probe 54 is close to the edges of the inlet and exhaust profiles on both sides of the blade to be tested, start the flaw detection probe 54 to collect and process the defect characteristics of the blade rotor to be tested, obtain the damage information of the blade surface, and upload the information to the ultrasonic flaw detector host 55, and complete the surface defect detection of the blade of the compressor rotor 1 to be tested at the current detection position; Step 5, perform surface defect detection on the next blade: the electric indexing plate clamping device 3 drives the compressor rotor 1 to be tested to rotate to the next testing position, and repeats steps 2 to 4 to perform surface defect detection on the blade of the compressor rotor 1 to be tested at the next testing position; Step 6, perform surface defect detection on all blades: Repeat step 5 until all blades of the compressor rotor 1 to be tested are tested for surface defects, then reset the electric indexing plate clamping device 3, the top cone stopper device 4 and the flaw detection device 5, and disassemble the compressor rotor 1 to be tested.

[0046] In the above method, the detection method of the compressor rotor 1 blade surface defect detection device can realize the precise positioning and rotation of the blade rotor through the linkage control of the electric dividing plate clamping device 3, the top cone stop device 4 and the flaw detection device 5, and can accurately collect, process and analyze the surface defects of blades of each level of the tested compressor rotor 1, thereby ensuring the integrity of the measurement results.

[0047] In summary, compared with the existing manual flaw detection of aircraft engine compressor rotor 1 blades, the compressor rotor blade surface defect detection device and detection method in the present invention can realize rapid detection of defects on the surface of the compressor rotor 1 blade, and has higher detection efficiency and detection accuracy.

Claims

1. A compressor rotor blade surface defect detection device, characterized in that: It comprises a testing platform, on which an electric indexing plate clamping device, a top cone stopper device and a flaw detection device are arranged; The two ends of the compressor rotor shaft are respectively connected to the electric indexing plate clamping device and the top cone stopper device, and the electric indexing plate clamping device and the top cone stopper device drive the compressor rotor to rotate and move axially; The flaw detection device includes a column arranged on one side of the compressor rotor, the bottom of the column is connected to the upper end surface of the detection platform, the top of the column is provided with a support arm, the end of the support arm is provided with a vertical movably connected to a pressing rod, the bottom end of the pressing rod is provided with a flaw detection probe and an ultrasonic flaw detector host electrically connected to each other, when the pressing rod is pressed down, the flaw detection probe is driven to perform blade surface defect detection on the compressor rotor blade, and the ultrasonic flaw detector host displays the surface defects of the compressor rotor blade.

2. The compressor rotor blade surface defect detection device according to claim 1, characterized in that: Two rotating support devices are arranged between the electric dividing plate clamping device and the top cone stop device, and a pair of supporting wheels are rotatably arranged on the top of the two rotating support devices. The two ends of the compressor rotor shaft are respectively arranged in the two pairs of supporting wheels, the axis of the supporting wheel is parallel to the axis of the compressor rotor shaft, and the circumferential outer wall of the supporting wheel is in contact with the circumferential outer wall of the compressor rotor shaft.

3. The compressor rotor blade surface defect detection device according to claim 2, characterized in that: The electric dividing plate clamping device includes a first support seat, the bottom of which is fixedly connected to the detection platform, a first rolling screw module is arranged on the top of the first support seat, an electric dividing plate is arranged on the first rolling screw module, a three-claw chuck for clamping the spline at one end of the compressor rotor shaft is arranged on the electric dividing plate, and the first rolling screw module drives the electric dividing plate to move along the axial direction of the compressor rotor shaft.

4. The compressor rotor blade surface defect detection device according to claim 3, characterized in that: The top cone stop device includes a second support seat, the bottom of the second support seat is fixedly connected to the detection platform, the top of the second support seat is provided with a second rolling screw module, the second rolling screw module is provided with a top cone, the top cone is in tight contact with the end surface of the other end of the compressor rotor shaft, the second rolling screw module drives the top cone to move along the axis of the compressor rotor shaft; the axis of the electric dividing plate coincides with the axis of the top cone.

5. The compressor rotor blade surface defect detection device according to claim 1, characterized in that: Each of the rotating support devices includes a support frame, the bottom of the support frame is fixedly connected to the detection platform, a sliding support is vertically slidably arranged on the support frame, a driving device for driving the sliding support to reciprocate in the vertical direction is arranged at the bottom of the support frame, and a pair of support wheels are rotatably arranged on the top of the sliding support.

6. The compressor rotor blade surface defect detection device according to claim 4, characterized in that: The bottom of the column is connected to the upper end surface of the detection platform through a third rolling screw module, and the third rolling screw module drives the column to move along the axis direction of the compressor rotor shaft.

7. The compressor rotor blade surface defect detection device according to claim 6, characterized in that: The flaw detection probe comprises two ultrasonic probes which are horizontally spaced and electrically connected to the ultrasonic flaw detector host; A mounting ring is provided on the circumferential outer wall of the pressing rod, and a plurality of return springs are provided on the mounting ring and the upper end surface of the support arm; a rotating electric cylinder is provided inside the bottom end of the pressing rod, the axis of the output shaft of the rotating electric cylinder coincides with the axis of the pressing rod and a fixing seat is provided on the output end of the rotating electric cylinder, a bidirectional electric cylinder is provided on the fixing seat, the two output shafts of the bidirectional electric cylinder are arranged horizontally, a connecting plate is fixed on each of the two output shafts of the bidirectional electric cylinder, and the bidirectional electric cylinder drives the two connecting plates to move toward or away from each other at the same time; the two ultrasonic probes are respectively arranged on the inner walls of the two connecting plates.

8. The compressor rotor blade surface defect detection device according to claim 6, characterized in that: The first rolling screw module, the second rolling screw module and the third rolling screw module each include two linear guide rails arranged horizontally at intervals, a rolling screw drive module is arranged between the two linear guide rails, a moving bracket is connected to the rolling screw drive module, and the two ends of the moving bracket are respectively slidably matched with the two linear guide rails, and the rolling screw drive module drives the moving bracket to slide along the length direction of the linear guide rails; The bottoms of the electric dividing plate, the top cone and the column are all fixedly connected to the upper end surface of the movable bracket.

9. The compressor rotor blade surface defect detection device according to claim 5, characterized in that: The driving device is a worm gear screw lift, and the top of the worm gear screw lift is fixedly connected to the sliding support.

10. A detection method based on the compressor rotor blade surface defect detection device according to any one of claims 2 to 9, characterized in that: include: Step 1, fix the compressor rotor to be tested: place the compressor rotor to be tested on two rotating support devices, adjust the positions of the electric indexing plate clamping device and the top cone stopper device, the electric indexing plate clamping device clamps the spline at one end of the compressor rotor shaft, and the top cone stopper device presses against the end surface of the other end of the compressor rotor shaft to position the compressor rotor to be tested; Step 2, select the blades on the compressor rotor to be tested: the electric indexing plate clamping device drives the compressor rotor to be tested to rotate to the testing position; Step 3: Adjust the flaw detection probe: adjust the position of the column and the angle of the flaw detection probe to align the flaw detection probe with the inlet and exhaust edges of the blades on the compressor rotor to be tested; Step 4, perform surface defect detection on the selected blade: press down the pressing rod to make the flaw detection probe close to the edges of the inlet and exhaust profiles on both sides of the blade to be tested, start the flaw detection probe to collect and process the defect characteristics of the blade rotor to be tested, obtain the damage information on the blade surface, and upload the information to the ultrasonic flaw detector host to complete the surface defect detection of the compressor rotor blade to be tested at the current detection position; Step 5, perform surface defect detection on the next blade: the electric indexing plate clamping device drives the compressor rotor to be tested to rotate to the next testing position, and repeats steps 2 to 4 to perform surface defect detection on the compressor rotor blade to be tested at the next testing position; Step 6, perform surface defect detection on all blades: Repeat step 5 until all blades of the compressor rotor to be tested are tested for surface defects, then reset the electric indexing plate clamping device, top cone stop device and flaw detection device, and disassemble the compressor rotor to be tested.

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