Bidirectional measuring tool special for conical surface of steam turbine blade

By designing a dual-vector tool specifically for the conical surface of steam turbine blades, and using the linkage of a drive motor and an electromagnet to achieve automated positioning and scanning, the problem of low efficiency of existing equipment has been solved, realizing efficient and automated blade inspection, which is suitable for large-scale production.

CN121474965APending Publication Date: 2026-02-06HUANENG YUNNAN DIANDONG ENERGY CO LTD

Patent Information

Application Number
CN202511652051.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-12
Publication Date
2026-02-06

AI Technical Summary

Technical Problem

Existing turbine blade conical surface measurement equipment is inefficient, requires a lot of manual operation, resulting in high measurement costs and is not suitable for large-scale testing.

Method used

A dual-vectoring tool specifically designed for the conical surface of steam turbine blades is presented. It uses a drive motor to rotate the detection disc, and combines the repulsive force of an electromagnet and a magnetic sheet to drive a sliding rod, thereby achieving automatic opening and closing of the positioning plate. With the help of splines and spline grooves to prevent flipping, it enables omnidirectional scanning and automated cyclic operation.

Benefits of technology

It significantly shortens the inspection time for a single blade, reduces manual operation steps, improves data consistency and reliability, adapts to the needs of large-scale production, reduces human intervention, and improves the overall continuity and efficiency of inspection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of steam turbine blade measurement, in particular to a special bidirectional measuring tool for a conical surface of a steam turbine blade, which comprises a detection table and a driving motor fixedly mounted on the inner top surface of the detection table, a detection disc is fixedly mounted at the output end of the driving motor, and a bracket is arranged at the side edge of the side surface of the detection table; a conical surface detection scanner is fixedly installed at the top end of the support, an installation structure is arranged between the support and the detection table, four installation plates distributed in an annular array are fixedly installed on the top face of the detection disc, and positioning assemblies are arranged on the installation plates. The automatic detection device has the beneficial effects that the detection disc is driven by the driving motor to rotate, the scanner is automatically reset in cooperation with linkage of the shifting rod, the shifting plate and the inclined push plate, the rotating seat is automatically overturned and reset after detection is completed, feeding of the next batch is facilitated, automatic circulation of feeding, detection, discharging and reset is formed, manual intervention is reduced, and the overall detection continuity is improved.
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Description

Technical Field

[0001] This invention relates to the field of turbine blade measurement technology, specifically a two-dimensional measuring tool for the conical surface of turbine blades. Background Technology

[0002] Steam turbine blades are the core components of a steam turbine, playing a crucial role in energy conversion and safe operation of the unit. Operating under extremely harsh conditions, they endure high temperatures, high pressures, immense centrifugal forces, steam forces, steam excitation forces, corrosion and vibration, and the erosion from water droplets in the wet steam zone. Their aerodynamic performance, machining geometry, surface roughness, installation clearances, operating conditions, and scaling all affect the turbine's efficiency and output.

[0003] A search revealed that Chinese patent CN217764751U discloses a dual-axis measuring tool specifically for the conical surface of steam turbine blades. The tool includes a measuring frame, a mechanical arm rotatably connected to the bottom of one side of the measuring frame, a rotating block rotatably connected to one end of the mechanical arm, and a blade clamp fixedly connected to the inner side of the rotating block. A first measuring scale is slidably connected to the measuring frame via a first groove. By setting the mechanical arm on one side of the measuring frame, the blade clamp can be adjusted in position as needed, allowing the side of the blade to better align with the first measuring scale, thereby improving reading accuracy. The mechanical arm also keeps the clamped blade parallel to the first measuring scale, making the measured blade dimensions more precise. The rotating block between the mechanical arm and the blade clamp allows the angle of the clamped blade to be adjusted, ensuring the measured surface aligns with the scale of the first or second measuring scale, facilitating measurement and reading. However, this solution still has the following shortcomings in practical use: In the aforementioned measurement of the conical surface of turbine blades, although the combination of a robotic arm and blade clamps brought certain conveniences to the measurement operation, this method could only measure turbine blades one by one. In actual measurement, each blade required a separate operational procedure, including precise positioning of the robotic arm, installation and adjustment of the clamps, and reading of measurement data. This not only resulted in a lengthy measurement process but also extremely low overall efficiency. Furthermore, because it was a single measurement, a significant amount of manual labor was required for operation and monitoring, leading to a serious waste of human resources, increased measurement costs, and hindering large-scale, high-efficiency turbine blade inspection.

[0004] Therefore, it is necessary to design a two-way vectoring tool specifically for the conical surface of steam turbine blades to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a two-way vectoring tool specifically for the conical surface of steam turbine blades, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a two-dimensional measuring tool for the conical surface of steam turbine blades, comprising a measuring platform and a drive motor fixedly installed on the top surface of the measuring platform. A measuring disk is fixedly installed at the output end of the drive motor. A bracket is provided at the side edge of the measuring platform. A conical surface measuring scanner is fixedly installed at the top of the bracket. An installation structure is provided between the bracket and the measuring platform. Four mounting plates arranged in a circular array are fixedly installed on the top surface of the measuring disk. A positioning component is provided on the mounting plate. A retraction component is provided between the positioning component and the measuring platform. A unloading component corresponding to the positioning component is provided on the measuring platform. The positioning component includes a support plate disposed on the side of the mounting plate. Two support cylinders are symmetrically and penetratingly disposed on the top surface of the support plate. Several positioning plates are disposed on the outer wall of the support cylinder in a circular array. A pushing structure corresponding to the positioning plate is disposed on the inner side of the support cylinder.

[0007] Preferably, the positioning component further includes a rotating seat that extends through the side of the mounting plate, the support plate is fixedly installed on the side of the rotating seat, the outer wall of the rotating seat is fixedly installed with a plurality of splines arranged in a circular array, and the inner wall of the mounting plate is provided with a plurality of spline grooves corresponding to the splines.

[0008] Preferably, both the spline and the spline groove are arc-shaped and made of rubber material.

[0009] Preferably, the pushing structure includes a guide sleeve fixedly installed on the top surface of the support cylinder, a slide rod slidably installed on the inner wall of the guide sleeve, and the bottom end of the slide rod passing through the bottom surface of the support cylinder. Two sets of top rods fixedly connected to the side of the positioning plate are provided through the outer wall of the support cylinder. Two fixing rings are fixedly fitted on the outer wall of the slide rod, and a transmission rod is hinged between the fixing ring and the end of the top rod located inside the support cylinder. A magnetic sheet is fixedly installed at the bottom end of the slide rod, and an electromagnet corresponding to the magnetic sheet is fixedly installed on the top surface of the detection disk.

[0010] Preferably, a positioning rubber ring is fixedly fitted at the top of the slide rod, and two positioning ring grooves that engage with the positioning rubber ring are symmetrically formed on the inner wall of the guide sleeve.

[0011] Preferably, the electromagnet and the magnetic sheet have the same magnetic poles.

[0012] Preferably, the installation structure includes a guide opening on the top surface of the testing platform, a guide seat slidably installed on the inner wall of the guide opening, and the bracket fixedly connected to the top surface of the guide seat. A fixing plate is fixedly installed on the inner top surface of the testing platform, and a spring is fixedly installed between the side of the fixing plate and the guide seat.

[0013] Preferably, the retraction component includes a mounting opening on the side of the mounting plate, a slider slidably mounted on the inner wall of the mounting opening, a spring fixedly mounted between the top surface of the slider and the inner top surface of the mounting opening, a lever fixedly mounted on the side of the slider, a lever plate adapted to the lever fixedly mounted on the side of the bracket, a vertical plate fixedly mounted on the top surface of the testing platform, and a slanted push plate corresponding to the lever fixedly mounted on the top of the vertical plate.

[0014] Preferably, the unloading assembly includes a transmission gear ring fixedly mounted on the end of the rotating seat away from the support plate. Two rotating racks that mesh with the transmission gear ring are fixedly installed on the top surface of the detection platform. Four discharge ports arranged in a circular array are opened on the top surface of the detection plate. A drop port is opened on the top surface of the detection platform between the two rotating racks. A bottom frame is fixedly installed on the inner wall of the drop port. A support frame is fixedly installed on the inner wall of the drop port. A magnetic plate is fixedly installed on the top surface of the support frame through a support rod. The magnetic poles of the magnetic plate and the magnetic sheet are opposite.

[0015] Preferably, the upright plate is located between the material discharge port and a flip rack near the support.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the repulsive force between the electromagnet and the magnetic sheet drives the sliding rod to automatically open the positioning plate to support the blade mounting hole, eliminating the need for manual leveling. After the inspection is completed, the magnetic sheet and the magnetic plate are used to shrink the positioning plate, and the blade automatically falls to complete the unloading. This reduces manual operation steps, significantly shortens the inspection time for a single blade, and is suitable for the needs of large-scale production. 2. In this invention, the positioning plate opens synchronously to ensure the blade is installed firmly, the spline and spline groove cooperate to prevent tilting when flipping, the detection disk rotates to drive the blade to flip 180 degrees, and the conical surface detection scanner scans the front and back sides to achieve all-round detection, avoid the subjective error of manual measurement, and improve the consistency and reliability of data. 3. In this invention, the detection disk is driven to rotate by a drive motor. With the linkage of the lever, the lever plate, and the inclined push plate, the scanner is automatically reset. After the detection is completed, the rotating seat is automatically flipped and reset, which facilitates the loading of the next batch of materials. This forms an automated cycle of loading, detection, unloading, and reset, reducing manual intervention and improving the overall continuity of detection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the testing station of the present invention; Figure 3 This is a schematic diagram of the detection disk structure of the present invention; Figure 4 This is a schematic diagram of the mounting plate structure of the present invention; Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is an exploded view of the support cylinder structure of the present invention; Figure 7 This is a schematic diagram of the detection stage structure of the present invention; Figure 8 This is a schematic diagram of the support structure of the present invention; Figure 9 for Figure 7 Enlarged structural diagram at point B.

[0018] The attached diagram lists the components represented by each number as follows: 11. Inspection table; 12. Drive motor; 13. Inspection disc; 14. Bracket; 15. Conical surface inspection scanner; 21. Mounting plate; 22. Rotating seat; 23. Support plate; 24. Spline; 25. Spline groove; 31. Support cylinder; 32. Guide sleeve; 33. Slide rod; 34. Top rod; 35. Fixing ring; 36. Transmission rod; 37. Positioning plate; 38. Magnetic sheet; 3 9. Positioning rubber ring; 310. Positioning ring groove; 311. Electromagnet; 41. Guide port; 42. Guide seat; 43. Fixing plate; 44. Spring 1; 51. Mounting port; 52. Slider; 53. Spring 2; 54. Lever; 55. Lever plate; 56. Vertical plate; 57. Inclined push plate; 61. Transmission gear ring; 62. Tilting rack; 71. Discharge port; 72. Drop port; 73. Base frame; 74. Support frame; 75. Magnetic plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides a technical solution: such as Figures 1-5 The invention relates to a two-dimensional measuring tool for the conical surface of steam turbine blades, comprising a measuring platform 11 and a drive motor 12 fixedly installed on the top surface of the measuring platform 11. A measuring disk 13 is fixedly installed at the output end of the drive motor 12. A bracket 14 is provided on the side of the measuring platform 11. A conical surface measuring scanner 15 is fixedly installed at the top of the bracket 14. Four mounting plates 21 arranged in a circular array are fixedly installed on the top surface of the measuring disk 13. Positioning components are provided on the mounting plates 21. The positioning assembly includes a support plate 23 disposed on the side of the mounting plate 21. Two support cylinders 31 are symmetrically disposed through the top surface of the support plate 23. The outer wall of the support cylinder 31 is provided with a number of positioning plates 37 arranged in a ring array. The positioning assembly also includes a rotating seat 22 disposed through the side of the mounting plate 21. The support plate 23 is fixedly installed on the side of the rotating seat 22. The outer wall of the rotating seat 22 is fixedly installed with a number of splines 24 arranged in a ring array. The inner wall of the mounting plate 21 is provided with a number of spline grooves 25 corresponding to the splines 24. Both the splines 24 and the spline grooves 25 are arc-shaped and made of rubber material. The inner side of the support cylinder 31 is provided with a pushing structure corresponding to the positioning plates 37.

[0021] In use, the turbine blades to be inspected first need to be placed by staff. Staff can place blades from the same batch. After the blades are fixed, one blade is located directly below the conical surface inspection scanner 15. The conical surface inspection scanner 15 is turned on to scan the front of the blade. As the inspection disk 13 rotates, the rotating seat 22 can be rotated 180 degrees. Before and after the rotating seat 22 is rotated, the engagement of the spline 24 and the spline groove 25 ensures the stability of the rotating seat 22 on the mounting plate 21 and prevents the blade from tilting. After the blade is rotated, the drive motor 12 stops, and the conical surface inspection scanner 15 is turned on again to scan the back of the blade, thus achieving a full-range scan of the entire blade. This facilitates the subsequent calculation and comparison of the blade's conical surface through system detection.

[0022] like Figure 3 , Figure 4 and Figure 6 As shown, the pushing structure includes a guide sleeve 32 fixedly installed on the top surface of the support cylinder 31. A slide rod 33 is slidably installed on the inner wall of the guide sleeve 32, and the bottom end of the slide rod 33 passes through the bottom surface of the support cylinder 31. Two sets of top rods 34 are fixedly connected to the side of the positioning plate 37 through the outer wall of the support cylinder 31. Two fixing rings 35 are fixedly fitted on the outer wall of the slide rod 33, and a transmission rod 36 is hinged between the fixing rings 35 and the top rods 34 located on the inner side of the support cylinder 31. A magnetic piece 38 is fixedly installed at the bottom end of the slide rod 33, and a positioning rubber ring 39 is fixedly fitted at the top end of the slide rod 33. Two positioning ring grooves 310 are symmetrically opened on the inner wall of the guide sleeve 32 and engage with the positioning rubber rings 39. An electromagnet 311 corresponding to the magnetic piece 38 is fixedly installed on the top surface of the detection disk 13. The magnetic poles of the electromagnet 311 and the magnetic piece 38 are the same.

[0023] During placement, in the initial state, the positioning plate 37 is attached to the support cylinder 31 and is in a retracted state. The operator can directly place the blades onto the outer walls of the two support cylinders 31, placing four blades in sequence. Then, the electromagnet 311 can be activated. When the electromagnet 311 is activated, it generates magnetic force. Since the magnetic poles of the electromagnet 311 and the magnetic piece 38 are the same, the magnetic piece 38 and the sliding rod 33 can be pushed upward under the action of repulsive magnetic force. The sliding rod 33 can slide along the guide sleeve 32. During the sliding of the sliding rod 33, the fixing ring 35 moves synchronously with it. And because the top rod 34 is slidably connected to the support cylinder 31... Furthermore, a transmission rod 36 is hinged between the top rod 34 and the fixed ring 35. Therefore, when the fixed ring 35 moves, it can push the top rod 34 through the transmission rod 36, causing the top rod 34 to extend out of the support cylinder 31 and push the positioning plate 37. Several positioning plates 37 open simultaneously, which can support and position the mounting holes of the blades, ensuring stability during the blade inspection process. At the same time, when the slide rod 33 is located at both ends of the guide sleeve 32, the positioning rubber ring 39 and the positioning ring groove 310 can be engaged to ensure that the position of the slide rod 33 in the guide sleeve 32 is fixed, so as to maintain the stability of the positioning plate 37 and the blades.

[0024] like Figure 2 , Figure 5 and Figure 8 As shown, an installation structure is provided between the bracket 14 and the testing table 11. The installation structure includes a guide opening 41 on the top surface of the testing table 11, a guide seat 42 is slidably installed on the inner wall of the guide opening 41, and the bracket 14 is fixedly connected to the top surface of the guide seat 42. A fixing plate 43 is fixedly installed on the inner top surface of the testing table 11, and a spring 44 is fixedly installed between the side of the fixing plate 43 and the guide seat 42. A retraction component is provided between the positioning component and the testing table 11. The retraction component includes a mounting port 51 opened on the side of the mounting plate 21. A slider 52 is slidably installed on the inner wall of the mounting port 51. A spring 53 is fixedly installed between the top surface of the slider 52 and the inner top surface of the mounting port 51. A lever 54 is fixedly installed on the side of the slider 52. A lever plate 55 adapted to the lever 54 is fixedly installed on the side of the bracket 14. A vertical plate 56 is fixedly installed on the top surface of the testing table 11. A slanted push plate 57 corresponding to the lever 54 is fixedly installed on the top of the vertical plate 56.

[0025] When the drive motor 12 is turned on, it drives the detection disk 13 to rotate. The rotation of the detection disk 13 causes the blades to be inspected on it to rotate synchronously. Since the guide seat 42 is slidably connected to the guide opening 41 on the detection table 11, and the guide opening 41 is arc-shaped, the rotation of the detection disk 13 allows the lever 54 on the mounting plate 21 to move the lever plate 55 on the side of the bracket 14, causing the bracket 14, guide seat 42, and conical surface scanner 15 to slide synchronously along the guide opening 41, and also stretching the spring 44. After scanning the reverse side of the blade, the drive motor 12... 2. Re-activate to drive the detection disc 13 to rotate and drive the guide seat 42 to slide along the guide opening 41. At this time, the lever 54 can contact the inclined push plate 57 at the top of the vertical plate 56. As the lever 54 moves, under the pushing action of the inclined push plate 57, the lever 54 and the slider 52 can slide upward along the mounting opening 51, so that the lever 54 and the lever plate 55 are misaligned. At this time, under the action of the spring 44, the guide seat 42, the bracket 14 and the conical surface detection scanner 15 can slide back along the guide opening 41 to reset, so as to continue repeating the above steps to perform conical surface detection on the next blade to be detected.

[0026] like Figure 3 , Figure 7 and Figure 9 As shown, the testing platform 11 is equipped with an unloading component corresponding to the positioning component. The unloading component includes a transmission gear ring 61 fixedly mounted on the rotating seat 22 at the end away from the support plate 23. Two rotating racks 62 that mesh with the transmission gear ring 61 are fixedly installed on the top surface of the testing platform 11. Four discharge ports 71 arranged in a circular array are opened on the top surface of the testing disk 13. A drop port 72 is opened on the top surface of the testing platform 11 between the two rotating racks 62. A bottom frame 73 is fixedly installed on the inner wall of the drop port 72. The upright plate 56 is located between the drop port 72 and a rotating rack 62 near the bracket 14. A support frame 74 is fixedly installed on the inner wall of the drop port 72. A magnetic plate 75 is fixedly installed on the top surface of the support frame 74 through a support rod. The magnetic poles of the magnetic plate 75 and the magnetic sheet 38 are opposite.

[0027] As the detection disc 13 rotates, when the mounting plate 21 rotates to the position of the first flip rack 62, the transmission gear ring 61 can mesh with the flip rack 62. Then, with the movement of the transmission gear ring 61, under the action of the flip rack 62, the rotating seat 22, support plate 23, support cylinder 31, and the blade to be detected can rotate 180 degrees. After the conical surface scanner 15 is reset, when the detection disc 13 drives the mounting plate 21 to rotate to the material discharge port 72 position, since the rotating seat 22 has already flipped, the magnetic sheet 38 is located above the support plate 23. At this time, the magnetic sheet 38 can interact with the magnetic plate 75 on the support frame 74. Yes, the magnetic poles of the two are opposite, so under the action of the magnetic attraction, the sliding rod 33 can slide in the opposite direction along the guide sleeve 32, thereby causing several positioning plates 37 to retract, releasing the restriction on the blade mounting hole. Under the action of the blade's gravity, it can fall through the discharge port 71 into the inner side of the bottom frame 73 in the discharge port 72, and can slide along the bottom frame 73 to realize the discharge. After the discharge is completed, as the detection disk 13 continues to rotate, the transmission gear ring 61 can mesh with the second flip rack 62, and can drive the rotating seat 22 to flip and reset, so that the blade on the detection disk 13 can be loaded again after the detection is completed.

[0028] Working Principle: In operation, the turbine blades to be tested must first be placed by personnel. Blades from the same batch can be placed. Specifically, initially, the positioning plate 37 is in contact with the support cylinder 31, in a retracted state. The personnel can directly place the blades onto the outer walls of the two support cylinders 31, placing four blades in sequence. Then, the electromagnet 311 can be activated. When activated, the electromagnet 311 generates magnetic force. Since the magnetic poles of the electromagnet 311 and the magnetic plate 38 are the same, under the action of repulsive magnetic force, the magnetic plate 38 and the sliding rod 33 can be pushed upwards. The sliding rod 33 can slide along the guide sleeve 32. During the sliding process of the sliding rod 33, the fixed... The ring 35 moves synchronously with it, and since the push rod 34 is slidably connected to the support cylinder 31, and the push rod 34 and the fixed ring 35 are hinged with a transmission rod 36, the fixed ring 35 can push the push rod 34 through the transmission rod 36 when it moves, so that the push rod 34 extends out of the support cylinder 31 to push the positioning plate 37. Several positioning plates 37 open synchronously, which can support and position the mounting holes of the blades, ensuring the stability during the blade inspection process. At the same time, when the slide rod 33 is located at both ends of the guide sleeve 32, the positioning rubber ring 39 and the positioning ring groove 310 can be engaged to ensure that the position of the slide rod 33 in the guide sleeve 32 is fixed, so as to maintain the stability of the positioning plate 37 and the blade. After the blade is fixed, one blade is located directly below the conical surface inspection scanner 15. Turning on the conical surface inspection scanner 15 allows scanning of the front of the blade. Then, turning on the drive motor 12 drives the inspection disk 13 to rotate. When the inspection disk 13 rotates, it can drive the blade to be inspected on it to rotate synchronously. Since the guide seat 42 is slidably connected to the guide port 41 on the inspection table 11, and the guide port 41 is arc-shaped, when the inspection disk 13 rotates, the lever 54 on the mounting plate 21 can move the lever plate 55 on the side of the bracket 14 to drive the bracket 14, guide seat 42 and conical surface inspection scanner 15 to slide synchronously along the guide port 41, and the spring 44 can be stretched. As the detection disc 13 rotates, when the mounting plate 21 rotates to the position of the first flip rack 62, the transmission gear ring 61 can mesh with the flip rack 62. Then, with the movement of the transmission gear ring 61, under the action of the flip rack 62, the rotating seat 22, support plate 23, support cylinder 31, and the blade to be inspected can be flipped 180 degrees. Before and after the rotating seat 22 flips, the engagement of the spline 24 and spline groove 25 ensures the stability of the rotating seat 22 on the mounting plate 21, preventing blade skewing. After the blade flips, the drive motor 12 stops, and the conical surface inspection scanner 15 restarts to scan the reverse side of the blade, thus achieving a full-range scan of the entire blade, facilitating subsequent... The system calculates and compares the conical surface data of the blade. After the reverse side of the blade is scanned, the drive motor 12 is turned on again to drive the detection disk 13 to rotate and drive the guide seat 42 to slide along the guide port 41. At this time, the lever 54 can contact the inclined push plate 57 at the top of the vertical plate 56. As the lever 54 moves, under the pushing action of the inclined push plate 57, the lever 54 and the slider 52 can slide upward along the mounting port 51, so that the lever 54 and the lever plate 55 are misaligned. At this time, under the action of the spring 44, the guide seat 42, the bracket 14 and the conical surface detection scanner 15 can slide back along the guide port 41 to reset, so as to continue repeating the above steps to perform conical surface detection on the next blade to be detected. After the conical surface inspection scanner 15 is reset, when the inspection disk 13 drives the mounting plate 21 to rotate to the material drop port 72 position, the magnetic sheet 38 is located above the support plate 23 because the rotating seat 22 has been flipped. At this time, the magnetic sheet 38 can face the magnetic plate 75 on the support frame 74. The magnetic poles of the two are opposite, so under the action of the magnetic attraction, the sliding rod 33 can slide in the opposite direction along the guide sleeve 32, thereby causing several positioning plates 37 to retract and release the restriction on the blade mounting hole. Under the action of the blade's gravity, it can fall through the material drop port 71 into the inner side of the bottom frame 73 in the material drop port 72, and can slide along the bottom frame 73 to realize the material drop. After the material drop is completed, as the inspection disk 13 continues to rotate, the transmission gear ring 61 can mesh with the second flip rack 62 and drive the rotating seat 22 to flip and reset, so that the blades on the inspection disk 13 can be loaded again after the inspection is completed. Through the above overall steps, batch conical surface inspection of blades can be realized, which not only increases the inspection efficiency, but also saves labor.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A two-dimensional measuring tool for the conical surface of steam turbine blades, comprising a measuring platform (11) and a drive motor (12) fixedly installed on the top surface of the measuring platform (11), wherein a measuring disk (13) is fixedly installed at the output end of the drive motor (12), characterized in that: A bracket (14) is provided on the side of the detection table (11). A conical surface detection scanner (15) is fixedly installed on the top of the bracket (14). An installation structure is provided between the bracket (14) and the detection table (11). Four mounting plates (21) arranged in a circular array are fixedly installed on the top surface of the detection disk (13). A positioning component is provided on the mounting plate (21). A retraction component is provided between the positioning component and the detection table (11). A unloading component corresponding to the positioning component is provided on the detection table (11). The positioning component includes a support plate (23) disposed on the side of the mounting plate (21). Two support cylinders (31) are symmetrically disposed through the top surface of the support plate (23). The outer wall of the support cylinder (31) is provided with a number of positioning plates (37) arranged in a ring array. The inner side of the support cylinder (31) is provided with a pushing structure corresponding to the positioning plate (37).

2. The dual-vectoring tool for the conical surface of steam turbine blades according to claim 1, characterized in that: The positioning component also includes a rotating seat (22) that runs through the side of the mounting plate (21). The support plate (23) is fixedly installed on the side of the rotating seat (22). The outer wall of the rotating seat (22) is fixedly installed with a number of splines (24) arranged in a ring array. The inner wall of the mounting plate (21) is provided with a number of spline grooves (25) corresponding to the splines (24).

3. A two-way vectoring tool for the conical surface of steam turbine blades according to claim 2, characterized in that: Both the spline (24) and the spline groove (25) are arc-shaped and made of rubber material.

4. A two-way vectoring tool for the conical surface of steam turbine blades according to claim 2, characterized in that: The pushing structure includes a guide sleeve (32) fixedly installed on the top surface of the support cylinder (31). A slide rod (33) is slidably installed on the inner wall of the guide sleeve (32), and the bottom end of the slide rod (33) passes through the bottom surface of the support cylinder (31). Two sets of top rods (34) are fixedly connected to the side of the positioning plate (37) through the outer wall of the support cylinder (31). Two fixing rings (35) are fixedly fitted on the outer wall of the slide rod (33), and a transmission rod (36) is hinged between the fixing ring (35) and the top rod (34) at one end located inside the support cylinder (31). A magnetic sheet (38) is fixedly installed at the bottom end of the slide rod (33), and an electromagnet (311) corresponding to the magnetic sheet (38) is fixedly installed on the top surface of the detection disk (13).

5. A two-way vectoring tool for the conical surface of steam turbine blades according to claim 4, characterized in that: The top of the slide rod (33) is fixedly fitted with a positioning rubber ring (39), and the inner wall of the guide sleeve (32) is symmetrically provided with two positioning ring grooves (310) that engage with the positioning rubber ring (39).

6. A two-way vectoring tool for the conical surface of steam turbine blades according to claim 4, characterized in that: The electromagnet (311) and the magnetic sheet (38) have the same magnetic poles.

7. A two-way vectoring tool for the conical surface of steam turbine blades according to claim 1, characterized in that: The installation structure includes a guide opening (41) on the top surface of the testing table (11), a guide seat (42) is slidably installed on the inner wall of the guide opening (41), and the bracket (14) is fixedly connected to the top surface of the guide seat (42). A fixing plate (43) is fixedly installed on the inner top surface of the testing table (11), and a spring (44) is fixedly installed between the side of the fixing plate (43) and the guide seat (42).

8. A two-way vectoring tool for the conical surface of a steam turbine blade according to claim 4, characterized in that: The retraction assembly includes a mounting port (51) on the side of the mounting plate (21), a slider (52) is slidably mounted on the inner wall of the mounting port (51), a spring (53) is fixedly mounted between the top surface of the slider (52) and the inner top surface of the mounting port (51), a lever (54) is fixedly mounted on the side of the slider (52), a lever plate (55) adapted to the lever (54) is fixedly mounted on the side of the bracket (14), a vertical plate (56) is fixedly mounted on the top surface of the detection table (11), and a slanted push plate (57) corresponding to the lever (54) is fixedly mounted on the top of the vertical plate (56).

9. A two-way vectoring tool for the conical surface of a steam turbine blade according to claim 8, characterized in that: The unloading assembly includes a transmission gear ring (61) fixedly mounted on the rotating seat (22) at the end away from the support plate (23). The top surface of the detection platform (11) is fixedly installed with two rotating racks (62) that mesh with the transmission gear ring (61). The top surface of the detection disk (13) is provided with four discharge ports (71) arranged in a ring array. The top surface of the detection platform (11) is provided with a drop port (72) located between the two rotating racks (62). The inner wall of the drop port (72) is fixedly installed with a bottom frame (73). The inner wall of the drop port (72) is fixedly installed with a support frame (74). The top surface of the support frame (74) is fixedly installed with a magnetic plate (75) by a support rod. The magnetic poles of the magnetic plate (75) and the magnetic sheet (38) are opposite.

10. A two-way vectoring tool for the conical surface of a steam turbine blade according to claim 9, characterized in that: The upright plate (56) is located between the material discharge port (72) and a flip rack (62) near the support (14).

Citation Information

Patent Citations

  • Bidirectional measuring tool special for conical surface of steam turbine blade

    CN217764751U

Cited By

  • Quality detection equipment for inner wall and outer wall of annular metal part

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