Rotor wing load measuring device
By point contact and connection with the torque measurement module and limiting its movement and rotation, the problem of low measurement accuracy of the rotor power system is solved, and high-precision torque and lift measurement is achieved.
Patent Information
- Application Number
- CN202422675561.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-04
AI Technical Summary
In the prior art, there is severe crosstalk between torque measurement and axial force measurement of rotor power systems, resulting in low measurement accuracy and difficult to meet the measurement accuracy requirements of electric vertical takeoff vehicles.
The lift measurement module is used to contact the torque measurement module point contact connection, and it is limited to its movement and rotation through the measurement platform bracket, reducing the contact area to reduce the impact of friction, ensuring independent transmission of torque and lift measurements.
It improves the accuracy of rotor load measurement, reduces crosstalk between torque and lift measurement, and meets the measurement accuracy requirements of electric hanging takeoff vehicles.
Smart Images
Figure CN223253288U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring aircraft, in particular to a rotor load measuring device. Background Art
[0002] At present, in order to carry more objects, electric vertical take-off aircraft are developing in the direction of large-scale. In order to ensure that electric vertical take-off aircraft can carry more and heavier objects, in addition to improving their own performance, their performance also needs to be accurately measured to ensure that the aircraft can withstand the specified load.
[0003] The rotor structure is the more mainstream structure in electric vertical take-off aircraft. The general method of loading the rotor power system in the industry is to use a dynamic torque sensor with axial force measurement installed on the rotor shaft transmission shaft to synchronously measure the rotor lift torque. This measurement method causes the stiffness conditions of the blade installation to deviate from the actual electric drive installation state, and the measurement accuracy is limited by the sensor itself. As a result, during the measurement process, there is serious crosstalk between the torque measurement and the axial force measurement, making it difficult to guarantee measurement accuracy and difficult to adapt to current measurement accuracy requirements. Utility Model Content
[0004] The purpose of the utility model is to provide a rotor load measuring device to solve the technical problem that in the current method of measuring the rotor power system load, there is serious crosstalk between torque measurement and axial force measurement, resulting in low measurement accuracy and difficulty in meeting current measurement accuracy requirements.
[0005] In order to achieve the above-mentioned objectives, the present invention provides a rotor load measurement device, including: a measurement platform bracket, a lift measurement module and a torque measurement module, the lift measurement module is fixed to the measurement platform bracket, and the torque measurement module is used to connect to the rotor device; wherein, the lift measurement module can point-contact with the torque measurement module and abut to limit the movement of the torque measurement module along a first direction, and the measurement platform bracket can point-contact with the torque measurement module and abut to limit the rotation of the torque measurement module around an axis parallel to the first direction.
[0006] Optionally, the lift measurement module and the torque measurement module are in point contact to form multiple first contact points, and the measurement platform bracket and the torque measurement module are in point contact to form multiple second contact points, and the multiple first contact points and the multiple second contact points are all arranged along the circumference of the torque measurement module.
[0007] Optionally, a lift measurement contact ball is further included, a receiving groove is formed between the lift measurement module and the measurement platform bracket, the torque measurement module is provided with a first limiting portion, the first limiting portion is arranged in the receiving groove, the lift measurement contact ball is arranged between the first limiting portion and the lift measurement module, and is in point contact with the first limiting portion and / or the lift measurement module along the first direction.
[0008] Optionally, the lift measurement contact ball is fixed to the lift measurement module, and a contact hole is formed on the surface of the first limiting portion facing the lift measurement module, and the lift measurement contact ball abuts against the bottom surface of the abutment hole.
[0009] Optionally, the lift measurement module includes a lift measurement sensor and a mounting block, the mounting block is arranged between the lift measurement sensor and the measurement platform bracket, and is fixedly connected to the lift measurement sensor and the measurement platform bracket, and the accommodating groove is formed between the lift measurement sensor and the measurement platform bracket.
[0010] Optionally, it also includes a connecting column, which is fixed to the measuring platform bracket and protrudes in the direction of the lift measurement module. The torque measurement module is provided with a second limiting portion, and the second limiting portion is provided with a conical through hole relative to the surface of the first direction. The connecting column passes through the conical through hole and can make point contact with the inner wall of the conical through hole.
[0011] Optionally, the measuring platform bracket is provided with a connecting hole, the connecting column passes through the connecting hole, the connecting column includes an upper column portion and a lower column portion connected in sequence from top to bottom, the connecting hole includes an upper hole section and a lower hole section arranged in sequence from top to bottom, the lower end face of the upper column portion abuts against the upper end face of the lower hole section, and the lower hole section is threadedly connected with a nut to lock the connecting column and the measuring platform bracket.
[0012] Optionally, the diameter of the tapered through hole gradually decreases from top to bottom.
[0013] Optionally, the minimum diameter of the tapered through hole is greater than the maximum diameter of the connecting column.
[0014] Optionally, a limiting bolt is further included, the measuring platform bracket is provided with a through hole extending along the first direction, the bottom surface of the torque measuring module is provided with a mounting hole, the rod of the limiting bolt passes through the through hole and is threadedly connected to the mounting hole, and the nut of the limiting bolt is located below the through hole, for limiting the distance that the torque measuring module moves relative to the measuring platform bracket along the first direction.
[0015] Compared with the prior art, the rotor load measurement device according to the embodiment of the present application has the following advantages:
[0016] In the rotor load measuring device of the present application, when the rotor device is operating, lift along a first direction and torque around the first direction are generated. The lift generated by the rotor device can be transmitted to the torque measurement module, the lift measurement module and the measurement platform support in sequence. Since the lift measurement module and the torque measurement module are point-contacted in the first direction, the contact area between the two is small, resulting in a small effect of the circumferential friction force generated between the lift measurement module and the torque measurement module on the torque measurement. At the same time, the torque generated by the rotor device can be transmitted to the torque measurement module and the measurement platform support in sequence, wherein the torque measurement module and the measurement platform support are The point contact connection is around the axis parallel to the first direction, and the abutment area between the torque measurement module and the measurement platform bracket is small, resulting in that the axial friction force generated between the torque measurement module and the measurement platform bracket has little effect on the lift measurement; in summary, the rotor load measurement device of the present application reduces the abutment area between the lift measurement module and the torque measurement module and between the torque measurement module and the measurement platform bracket to reduce the crosstalk effect between the force transmission path of lift measurement and the force transmission path of torque measurement, thereby increasing the accuracy of torque measurement and lift measurement to meet the measurement accuracy requirements of current rotor structure electric vertical take-off aircraft. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic structural diagram of the rotor load measuring device of the present invention.
[0018] Figure 2 This is an exploded view of the rotor load measuring device of the present invention.
[0019] Figure 3 This is an exploded diagram of another explosion mode of the rotor load measuring device of the present invention.
[0020] Figure 4 This is a front view of the rotor load measuring device of the present invention.
[0021] Figure 5 for Figure 4 A partial enlarged view of part A in the middle.
[0022] Figure markings: 1. torque measurement module; 11. first mounting seat; 12. torque measurement sensor; 13. second mounting seat; 2. lift measurement module; 21. lift measurement sensor; 22. mounting block; 3. lift measurement contact ball; 4. connecting column; 41. upper column; 42. lower column; 5. measuring platform bracket; 51. connecting hole; 511. upper hole section; 512. lower hole section; 52. through hole; 53. first mounting plate; 54. load-bearing main frame; 55. second mounting plate; 6. first limiting portion; 61. abutment hole; 7. second limiting portion; 71. conical through hole; 8. accommodating groove; 9. nut; 10. limiting bolt; 101. rod; 102. nut; 20. rotor device; 201. rotor body; 202. drive; 203. connecting shaft. DETAILED DESCRIPTION
[0023] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0024] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0026] like Figures 1 to 5 As shown, a rotor load measurement device of the present invention includes a measurement platform bracket 5, a lift measurement module 2 and a torque measurement module 1. The lift measurement module 2 is fixed to the measurement platform bracket 5, and the torque measurement module 1 is used to connect to the rotor device 20; wherein, the lift measurement module 2 can make point contact with the torque measurement module 1 and abut to limit the movement of the torque measurement module 1 along a first direction, and the measurement platform bracket 5 can make point contact with the torque measurement module 1 and abut to limit the rotation of the torque measurement module 1 around an axis parallel to the first direction.
[0027] In the above technical solution, when the rotor device 20 is in operation, it generates lift along the first direction and torque around the first direction. The lift generated by the rotor device 20 can be transmitted to the torque measurement module 1, the lift measurement module 2 and the measurement platform support in sequence. Since the lift measurement module 2 and the torque measurement module 1 are connected by point contact in the first direction, the contact area between the two is small, resulting in a small effect of the circumferential friction force generated between the lift measurement module 2 and the torque measurement module 1 on the torque measurement. At the same time, the torque generated by the rotor device 20 can be transmitted to the torque measurement module 1 and the measurement platform support 5 in sequence, wherein the torque measurement module 1 and the measurement platform support The bracket 5 is point-contact connected in the direction of the axis parallel to the first direction, and the abutment area between the torque measurement module 1 and the measurement platform bracket 5 is small, resulting in the axial friction force generated between the torque measurement module 1 and the measurement platform bracket 5 having little effect on the lift measurement; in summary, the rotor load measurement device of the present application reduces the abutment area between the lift measurement module 2 and the torque measurement module 1 and between the torque measurement module 1 and the measurement platform bracket 5 to reduce the crosstalk effect between the force transmission path of lift measurement and the force transmission path of torque measurement, thereby increasing the accuracy of torque measurement and lift measurement to meet the measurement accuracy requirements of current rotor structure electric vertical take-off aircraft.
[0028] Furthermore, the lift measurement module 2 and the torque measurement module 1 are in point contact to form multiple first contact points, and the measurement platform bracket 5 and the torque measurement module 1 are in point contact to form multiple second contact points. The multiple first contact points and the multiple second contact points are all arranged along the circumference of the torque measurement module 1 so that the lift and torque can be transmitted evenly.
[0029] Furthermore, it also includes a lift measurement contact ball. A receiving groove 8 is formed between the lift measurement module 2 and the measurement platform bracket 5. The torque measurement module 1 is provided with a first limit portion 6, which is arranged in the receiving groove 8. The lift measurement contact ball 3 is arranged between the first limit portion 6 and the lift measurement module 2, and point-contacts the first limit portion 6 and / or the lift measurement module 2 along a first direction to form a first contact point; wherein, the lift measurement contact ball 3 abuts the lift measurement module 2 and the torque measurement module 1 or one of the two along the first direction. When the rotor device 20 is operating, the lift generated by the rotor device 20 can be transmitted to the torque measurement module 1, the lift measurement module 2 and the measurement platform bracket in sequence. Since the lift measurement module 2 and the torque measurement module 1 are point-contacted by the lift measurement contact ball 3 with a curved surface, the area of mutual contact is small, thereby making the axial friction generated between the lift measurement module 2 and the torque measurement module 1 have little effect on the torque measurement.
[0030] Furthermore, the lift measurement contact ball 3 is fixed to the lift measurement module 2, and the first limit portion 6 is provided with an abutment hole 61 on the surface facing the lift measurement module 2. The lift measurement contact ball 3 abuts against the bottom surface of the abutment hole 61 to facilitate alignment and connection between the lift measurement module 2 and the first limit portion 6.
[0031] Furthermore, the lift measurement module 2 includes a lift measurement sensor 21 and a mounting block 22. The mounting block 22 is arranged between the lift measurement sensor 21 and the measurement platform bracket 5 and is fixedly connected to the lift measurement sensor 21 and the measurement platform bracket 5. A receiving groove 8 is formed between the lift measurement sensor 21 and the measurement platform bracket 5. The mounting block 22 raises the height of the lift measurement sensor 21 so that the first limit portion 6 can be arranged between the lift measurement sensor 21 and the measurement platform, and facilitates the installation of the mounting block 22, the lift measurement sensor 21 and the first limit portion 6. Specifically, the lift measurement sensor 21 is a horizontally arranged long strip sensor. The mounting block 22 is connected to the bottom surface of one end of the lift measurement sensor 21, and the lift measurement contact ball 3 is arranged on the bottom surface of the other end of the lift measurement sensor 21.
[0032] Furthermore, it also includes a connecting column, the connecting column 4 is fixed to the measuring platform bracket 5 and protrudes in the direction of the lift measurement module 2, the torque measurement module is provided with a second limiting portion 7, the second limiting portion 7 is provided with a tapered through hole 71 relative to the surface of the first direction, the connecting column 4 passes through the tapered through hole 71, and can form a second contact point with the inner wall of the tapered through hole; when the rotor device 20 is in operation, the torque generated by the rotor device 20 can be transmitted to the torque measurement module 1 and the measuring platform bracket 5 in sequence, wherein the torque measurement sensor 12 and the measuring platform bracket 5 transmit torque through the abutment between the connecting column 4 and the tapered through hole 71. Specifically, the outer wall of the connecting column 4 abuts against the inner wall of the tapered through hole 71. Furthermore, due to the shape of the tapered through hole 71 and the gap between the connecting column 4 and the tapered through hole 71, the connecting column 4 and the tapered through hole 71 can be point-contact connected, so that the abutment area between the connecting column 4 and the tapered through hole 71 is small, and thus the axial friction force generated between the connecting column 4 and the tapered through hole 71 has little effect on the lift measurement.
[0033] Further, such as Figure 4 and 5As shown, the measuring platform bracket 5 is provided with a connecting hole 51, and the connecting column 4 is passed through the connecting hole 51. The connecting column 4 includes an upper column portion 41 and a lower column portion 42 connected in sequence from top to bottom. The connecting hole 51 includes an upper hole section 511 and a lower hole section 512 arranged in sequence from top to bottom. The lower end face of the upper column portion 41 abuts against the upper end face of the lower hole section 512, and the lower hole section 512 is threadedly connected with a nut 9 to lock the connecting column 4 and the measuring platform bracket 5, so that the connecting column 4 can be conveniently and firmly connected to the measuring platform support. The specific connection method of the connecting column 4 is to connect the torque measurement module and the measuring platform support. The platform bracket 5 is abutted against each other, and the connecting hole 51 and the tapered through hole 71 are opposite to each other, and then the connecting column 4 is passed through the tapered through hole 71 and the connecting hole 51 from top to bottom in sequence, and then the nut 9 is installed on the lower column part 42 from the bottom of the connecting column 4, and the nut 9 is abutted between the test platform to lock the connecting column 4 and the test platform; wherein, the diameter of the upper hole section 511 is larger than the diameter of the lower hole section 512, the diameter of the upper column part 41 is larger than the diameter of the lower column part 42, the diameter of the upper column part 41 is larger than the diameter of the lower hole section 512, and the diameter of the lower hole part is not larger than the diameter of the lower hole section 512.
[0034] Further, such as Figure 4 and 5 The diameter of the tapered through hole 71 shown gradually decreases from top to bottom, so that the connecting column 4 can be guided by the tapered through hole 71 to facilitate the installation of the connecting column 4. Furthermore, when the minimum diameter of the tapered through hole 71 is larger than the maximum diameter of the connecting column 4, it can be ensured that the guide column and the tapered through hole 71 are in point contact when they abut against each other, which can minimize the influence of the axial friction force generated between the connecting column 4 and the tapered through hole 71 on the lift measurement.
[0035] Specifically, the inner wall surface of the tapered through hole 71 is a conical surface with an axis parallel to the first direction, and the outer peripheral surface of the connecting column 4 is a cylindrical surface with an axis parallel to the first direction. When the conical surface and the cylindrical surface contact, they are in point contact.
[0036] Further, such as Figures 1 to 5As shown, the torque measurement module 1 includes a first mounting seat 11, a torque measurement sensor and a second mounting seat 13 connected in sequence from top to bottom. The first mounting seat 11 is used to connect to the rotor device 20. The first mounting seat 11 is provided with a first limiting portion 6, and the second mounting seat 13 is provided with a second limiting portion 7. The lift generated by the suspension device is sequentially transmitted to the first mounting seat 11, the first limiting portion 6, the lift measurement sensor 21 module and the measurement platform bracket 5, and the torque generated by the suspension device is sequentially transmitted to the first mounting seat 11, the torque measurement sensor 12, the second mounting seat 13, the connecting column 4 and the measurement platform bracket 5, so as to clarify the transmission path of the lift and torque and the specific setting position of the torque sensor, and facilitate the maintenance of specific components when the test is abnormal; further, the first limiting portion 6 and the second limiting portion 7 can be provided on the side of the torque measurement module 1, the first limiting portion 6 is higher than the second limiting portion 7. Further, the first limiting portion 6 can be provided on the side of the first mounting seat 11, and the second limiting portion 7 is provided on the side of the second mounting seat 13.
[0037] Furthermore, it also includes a limiting bolt 10, the measuring platform bracket 5 is provided with a through hole 52 passing through in the first direction, and the bottom surface of the torque measuring module 1 is provided with a mounting hole, the rod 101 of the limiting bolt 10 passes through the through hole 52 and is threadedly connected to the mounting hole, and the nut 102 of the limiting bolt 10 is located below the through hole 52, which is used to limit the distance that the torque measuring module 1 moves relative to the measuring platform bracket 5 in the first direction; when the connection between the lift measurement module 2, the lift measurement contact ball 3 and the first limiting portion 6 fails, causing the torque measurement module 1 to be carried away by the lift device, the nut 102 of the limiting bolt 10 abuts against the measuring platform bracket 5 to prevent the torque measurement module 1 from separating from the rotor device 20; further, in order to increase the abutment area between the limiting bolt 10 and the measuring platform bracket 5, so as to prevent the limiting bolt 10 and the torque measurement module 1 and the limiting bolt 10 and the measuring platform bracket 5 from generating a large pressure, there are multiple limiting bolts 10, and the multiple limiting bolts 10 are arranged along the circumference of the rotor device 20.
[0038] Further, such as Figures 1 to 4 As shown, the measuring platform bracket 5 includes a first mounting plate 53, a supporting main frame 54 and a second mounting plate 55. The first mounting plate 53 is fixedly arranged on the top surface of the supporting main frame 54. The connecting hole 51 is arranged on the first mounting plate 53. The first mounting plate 53 is connected to the lift measurement module 2. The second mounting plate 55 is fixedly arranged on the side of the supporting main frame 54. The second mounting plate 55 is used to be installed on a fixed object.
[0039] Further, such as Figures 1 to 4As shown, the rotor device 20 includes a rotor body 201, a driver 202 and a connecting shaft 203. The rotor body 201 is installed on the top of the driver 202, and the connecting shaft 203 is provided at the bottom of the driver 202. The top surface of the torque measurement module 1 is provided with an axial hole, and the top end of the connecting shaft 203 is connected to the driver 202, and the bottom end is connected to the axial hole.
[0040] Furthermore, the specific connection methods of fixed setting and fixed connection refer to the relative position relationship of two components that can be fixedly connected, including fixing by connecting parts, fixing by welding, fixing by adhesives, fixing by integral molding, and fixing by snap connections.
[0041] Furthermore, the connecting parts include fasteners, straps, ties, pneumatic connecting elements, hydraulic connecting elements, flange plates, Velcro, and buttons.
[0042] In summary, the embodiments of the present invention provide a rotor load measurement device, the technical effects of which are:
[0043] In the rotor load measuring device of the present application, when the rotor device 20 is in operation, it generates lift along the first direction and torque around the first direction. The lift generated by the rotor device 20 can be transmitted to the torque measuring module 1, the lift measuring module 2 and the measuring platform support in sequence. Since the lift measuring module 2 and the torque measuring module 1 are point-contacted in the first direction, the contact area between the two is small, resulting in a small effect of the circumferential friction force generated between the lift measuring module 2 and the torque measuring module 1 on the torque measurement. At the same time, the torque generated by the rotor device 20 can be transmitted to the torque measuring module 1 and the measuring platform support 5 in sequence, wherein the torque measuring module 1 and the measuring platform The bracket 5 is point-contact connected in the direction around the axis parallel to the first direction, and the abutment area between the torque measurement module 1 and the measurement platform bracket 5 is small, resulting in the axial friction force generated between the torque measurement module 1 and the measurement platform bracket 5 having little effect on the lift measurement; in summary, the rotor load measurement device of the present application reduces the abutment area between the lift measurement module 2 and the torque measurement module 1 and between the torque measurement module 1 and the measurement platform bracket 5 to reduce the crosstalk effect between the force transmission path of lift measurement and the force transmission path of torque measurement, thereby increasing the accuracy of torque measurement and lift measurement to meet the measurement accuracy requirements of current rotor structure electric vertical take-off aircraft.
[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.
Claims
1. A rotor load measuring device, characterized in that: include: Measuring platform bracket (5); A lift measurement module (2) fixed to the measurement platform bracket (5); A torque measurement module (1) for connecting to a rotor device (20); The lift measurement module (2) is capable of point-contacting the torque measurement module (1) and abutting to limit the movement of the torque measurement module (1) in a first direction, and the measurement platform bracket (5) is capable of point-contacting the torque measurement module (1) and abutting to limit the rotation of the torque measurement module (1) around an axis parallel to the first direction.
2. The rotor load measuring device according to claim 1, characterized in that: The lift measurement module (2) and the torque measurement module (1) are in point contact to form a plurality of first contact points, and the measurement platform bracket (5) and the torque measurement module (1) are in point contact to form a plurality of second contact points, and the plurality of first contact points and the plurality of second contact points are both arranged along the circumference of the torque measurement module (1).
3. The rotor load measuring device according to claim 1, characterized in that: The invention also includes a lift measurement contact ball, a receiving groove (8) is formed between the lift measurement module (2) and the measurement platform bracket (5), the torque measurement module is provided with a first limiting portion, the first limiting portion (6) is arranged in the receiving groove (8), the lift measurement contact ball (3) is arranged between the first limiting portion (6) and the lift measurement module (2), and is in point contact with the first limiting portion (6) and / or the lift measurement module (2) along the first direction.
4. The rotor load measuring device according to claim 3, characterized in that: The lift measurement contact ball (3) is fixed to the lift measurement module (2); a contact hole (61) is provided on the surface of the first limit portion (6) facing the lift measurement module (2); and the lift measurement contact ball (3) contacts the bottom surface of the contact hole (61).
5. The rotor load measuring device according to claim 3, characterized in that: The lift measurement module (2) comprises a lift measurement sensor (21) and a mounting block (22); the mounting block (22) is arranged between the lift measurement sensor (21) and the measurement platform bracket (5), and is fixedly connected to the lift measurement sensor (21) and the measurement platform bracket (5); the accommodating groove (8) is formed between the lift measurement sensor (21) and the measurement platform bracket (5).
6. The rotor load measuring device according to claim 1, characterized in that: The invention also includes a connecting column, wherein the connecting column (4) is fixed to the measuring platform bracket (5) and protrudes in the direction of the lift measurement module (2); the torque measurement module is provided with a second limiting portion, and the second limiting portion (7) is provided with a tapered through hole (71) relative to the surface of the first direction; the connecting column (4) passes through the tapered through hole (71) and can make point contact with the inner wall of the tapered through hole.
7. The rotor load measuring device according to claim 6, characterized in that: The measuring platform bracket (5) is provided with a connecting hole (51), the connecting column (4) passes through the connecting hole (51), the connecting column (4) includes an upper column portion (41) and a lower column portion (42) connected in sequence from top to bottom, the connecting hole (51) includes an upper hole section (511) and a lower hole section (512) arranged in sequence from top to bottom, the lower end face of the upper column portion (41) abuts against the upper end face of the lower hole section (512), and the lower hole section (512) is threadedly connected with a nut (9) to lock the connecting column (4) and the measuring platform bracket (5).
8. The rotor load measuring device according to claim 6, characterized in that: The diameter of the tapered through hole (71) gradually decreases from top to bottom.
9. The rotor load measuring device according to claim 6, characterized in that: The minimum diameter of the tapered through hole (71) is greater than the maximum diameter of the connecting column (4).
10. The rotor load measuring device according to claim 3, characterized in that: It also includes a limiting bolt (10), the measuring platform bracket (5) is provided with a through hole (52) extending along the first direction, the bottom surface of the torque measuring module (1) is provided with a mounting hole, the rod (101) of the limiting bolt (10) passes through the through hole (52) and is threadedly connected to the mounting hole, and the nut (102) of the limiting bolt (10) is located below the through hole (52) and is used to limit the distance that the torque measuring module (1) moves relative to the measuring platform bracket (5) along the first direction.