Propeller torque detection device and method

Abstract

The invention belongs to the technical field of force measuring devices, and relates to a propeller torque detection device and method. The rotating speed of the propeller is adjusted through the rotating speed adjusting part. An inlet of the air duct is connected with an outlet of the air blowing assembly, and external air is blown into the air duct through the air blowing assembly. An air pressure adjusting assembly and an air direction adjusting assembly are arranged in the air duct, and the air direction adjusting assembly is used for preliminarily adjusting the rotating direction of air in the air duct; the rotation direction of air in the air duct is further adjusted through the air pressure adjusting assembly, so that the torque borne by the propeller is changed, and detection of the propeller under different torque working conditions is achieved. Detection of different torques under the same rotating speed and detection of different rotating speeds under the same torque of the propeller can be realized, the device can be used for simulating measurement of the torque and the acceleration torque of the propeller under fluids with different viscosities and can also be used for simulating measurement of the torque and the acceleration torque when the viscosities change, the detection is more suitable for the actual situation, and the detection accuracy is improved. And the detected data is more comprehensive and accurate.

Description

Technical Field

[0001] The invention belongs to the technical field of force measuring devices and relates to a propeller torque detection device and method. Background Art

[0002] Amphibious robots not only have broad application prospects in military, rescue, environmental protection and other fields, but also play an important role in promoting human scientific and technological progress and expanding living space.

[0003] In order to ensure that the amphibious rescue and exploration robot can successfully complete the exploration mission underwater, the strength of its propeller needs to be strong enough to be suitable for waters in different environments. Therefore, propeller torque testing is required during the production of the amphibious rescue and exploration robot.

[0004] For example, the Chinese invention patent with publication number CN108918136A discloses a propeller dynamic tension and torque measurement device, which includes a propeller assembly, a transmission shaft, a first sensor assembly, a transmission mechanism, a second sensor and a power source. The transmission shaft is fixedly connected to the first end of the transmission mechanism after passing through the first sensor assembly. The power source is fixedly connected to the second end of the transmission mechanism through the second sensor. The propeller assembly is fixedly arranged at the end of the transmission shaft away from the transmission mechanism. The first sensor assembly is used to detect the tension and pressure of the propeller in the motion state, the second sensor is used to detect its torque, and the transmission mechanism is used to elastically connect the first sensor assembly and the second sensor and realize coaxial rotation.

[0005] The propeller dynamic tension and torque measuring device can not only measure the dynamic tension and torque generated by the rotation of the propeller, but also reduce the influence of vibration and acceleration of propulsion system components such as motors in vehicle-mounted tests on the measurement results, thereby improving the measurement accuracy. When the propeller dynamic tension and torque measuring device is used for detection, the torque is detected by making the propeller reach different rotation speeds. As the rotation speed increases, the torque of the propeller increases, but the torque of the propeller is nonlinearly proportional to the rotation speed. The rotation speed increases linearly, while the torque increases with decreasing acceleration. In addition, different fluid media have different viscosities, and the resistance generated by fluids of different viscosities is different, and the corresponding torques generated are also different. However, the device cannot detect different torques at the same rotation speed, nor can it detect different rotation speeds at the same torque, and the detection results are not comprehensive enough.

[0006] In summary, the existing propeller torque detection device and method cannot detect different torques at the same speed, nor can it detect different speeds at the same torque, and the detection results are not comprehensive enough. Summary of the invention

[0007] The purpose of the present invention is to provide a propeller torque detection device and method to solve the technical problem that the detection results of the existing propeller torque detection device and method are not comprehensive enough. The present invention can realize the detection of different torques of the propeller at the same speed and the detection of different speeds at the same torque, and the detection results are comprehensive and accurate.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: The invention discloses a propeller torque detection device, comprising a propeller, an input end of the propeller connected to a torque sensor, and also comprising a blower assembly, a wind tube and a speed regulating part; The input end of the torque sensor is connected to the output end of the speed regulating unit; The inlet of the wind tube is connected to the outlet of the air blowing assembly, a propeller is arranged at the outlet of the wind tube, a wind pressure regulating assembly and a wind direction regulating assembly are arranged inside the wind tube, and the wind pressure regulating assembly is located between the wind direction regulating assembly and the propeller.

[0009] Furthermore, the speed regulating unit includes a detection motor, an output end of the detection motor is connected to an input end of a speed regulator through a coupling, and the output end of the speed regulator is connected to an input end of a torque sensor.

[0010] Furthermore, the detection motor and the speed regulator are both fixedly mounted on the operating table, the detection motor is fixedly mounted on the operating table via a pad, and a vibration-damping rubber plate is provided between the detection motor and the pad; There is a hair dryer on the operating table.

[0011] Furthermore, the wind tube includes an air outlet tube, an air inlet tube and an adjustment tube. The air inlet tube is connected to the air outlet tube through the adjustment tube. The air inlet tube is connected to the outlet of the blower assembly. A propeller is provided at the outlet of the air outlet tube. The adjustment tube is provided with a wind pressure adjustment assembly, and the air inlet tube is provided with a wind direction adjustment assembly.

[0012] Furthermore, the wind pressure regulating assembly includes a support frame, the support frame is fixedly connected to the regulating cylinder, the support frame is located at the axis of the regulating cylinder, a plurality of shafts are movably provided on the regulating cylinder at equal intervals in the radial direction, the shafts are rotatably connected to the support frame, and regulating blades are provided on the shafts, and the regulating blades are located inside the regulating cylinder; The input end of the shaft is connected to the self-locking motor through a transmission device. The self-locking motor can drive the shaft to rotate through the first transmission device, thereby driving the adjusting blade to rotate.

[0013] Furthermore, the first transmission device includes an adjusting ring, which is sleeved on the adjusting cylinder and rotatably connected to the adjusting cylinder. The adjusting ring is provided with a plurality of meshing teeth. The output end of the self-locking motor is connected to a gear plate, which meshes with the meshing teeth. A plurality of shafts are provided with rotating rods, which are movably connected to the adjusting rods, and the adjusting rods are movably connected to the adjusting rings.

[0014] Further, the wind direction adjustment component includes an air guide tube, which is fixedly connected to the air inlet tube, a rotating shaft is passed through the air guide tube, a fixed cone disk is movably sleeved on the rotating shaft, a plurality of flexible wind direction adjustment plates are provided on the rotating shaft, the wind direction adjustment plates are fixedly connected to the fixed cone disk, the tip of the fixed cone disk points to the air blowing component, and the gap between the air guide tube and the fixed cone disk is greater than the spacing between two adjacent wind direction adjustment plates; The rotating shaft is located at the axis center of the air inlet cylinder, and the rotating shaft is connected to the driving motor through a second transmission device.

[0015] Furthermore, a cone is provided at the inlet of the wind tube, and a small cone opening of the cone is connected to the outlet of the air blowing assembly.

[0016] Furthermore, the blower assembly includes a blower hood, which is fixedly connected to the small cone mouth of the cone, and has blower blades rotatably arranged inside the blower hood. A blower motor is fixedly installed outside the blower hood, and the drive end of the blower motor is connected to the input end of the blower blades.

[0017] Based on the above structure, the present invention also discloses a propeller torque detection method, which uses a propeller torque detection device and includes the following steps: Starting the speed regulating unit to adjust the speed of the propeller; Start the blower assembly and adjust the air flow rate in the air cylinder through the blower assembly; Start the wind direction adjustment component to preliminarily adjust the rotation direction of the air in the wind tube through the wind direction adjustment component; The wind pressure regulating component is started to further adjust the rotation direction of the air in the wind tube through the wind pressure regulating component, thereby changing the angle of the impact force on the propeller and thus changing the torque on the propeller; The torque acting on the propeller is collected by a torque sensor.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adjusts the speed of the propeller through the speed regulating part, which is convenient for realizing the detection of different speed working conditions of the propeller, and accurately measures the torque generated when the propeller rotates through the torque sensor. The inlet of the wind duct is connected to the outlet of the air blowing assembly, and the outside air is blown into the wind duct through the air blowing assembly, and is used to change the wind speed in the wind duct. The wind duct is used to isolate the internal airflow from the outside to form a stable airflow environment. A wind pressure regulating assembly and a wind direction regulating assembly are arranged inside the wind duct. The wind direction regulating assembly is used to preliminarily adjust the rotation direction of the air in the wind duct to reduce the impact of the airflow and the wind pressure regulating assembly; the rotation direction of the air in the wind duct is further adjusted through the wind pressure regulating assembly, thereby changing the angle of the impact force on the propeller, thereby changing the torque on the propeller, and realizing the detection of the propeller under different torque working conditions. The present invention can detect the propeller through three methods, namely, variable torque without changing speed, variable speed without changing torque, and uniform change of torque and speed. It can realize the detection of different torques of the propeller at the same speed and the detection of different speeds at the same torque. It can be used to simulate the measurement of the torque and acceleration torque of the propeller under fluids with different viscosities, and can also be used to simulate the measurement of the torque and acceleration torque when the viscosity changes. The detection is more in line with the actual situation, and the data obtained by the detection is more comprehensive and accurate.

[0019] 2. The driving end of the detection motor of the present invention drives the speed regulator through a coupling. The purpose of using the coupling is to avoid direct connection between the driving end of the detection motor and the input end of the speed regulator, which can effectively avoid vibration caused by axis deviation and improve the stability of detection.

[0020] 3. The present invention uses the same adjustment ring to drive the shaft rod through the adjustment rod and the rotating rod, which can realize the synchronous rotation of the adjustment blades and ensure that the rotation angles of all the adjustment blades are consistent, which is beneficial to the stability of wind rotation and further improves the stability of detection.

[0021] 4. The present invention can detect the propeller under different speed conditions by starting the speed regulating part and adjusting the speed of the propeller through the speed regulating part; by starting the blower assembly and adjusting the air flow rate in the wind tube through the blower assembly, it is convenient to adjust the air flow rate; by starting the wind direction regulating assembly and preliminarily adjusting the rotation direction of the air in the wind tube through the wind direction regulating assembly, it is beneficial to reduce the impact of the air on the wind pressure regulating assembly and to ensure the stability of the rotating air in the wind tube; by starting the wind pressure regulating assembly and further adjusting the rotation direction of the air in the wind tube through the wind pressure regulating assembly, the angle of the impact force on the propeller is changed, thereby changing the torque on the propeller, and detecting the propeller under different torque conditions; the torque on the propeller is collected through the torque sensor. Repeating the above steps can realize the detection of different torques of the propeller at the same speed and the detection of different speeds at the same torque, and the detection results are comprehensive and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Detailed schematic diagram of the structure after being rotated to a certain angle; Figure 3 for Figure 2 The enlarged structural diagram of the central operating table, detection motor, coupling and speed regulator; Figure 4 for Figure 2 The enlarged structural schematic diagram after removing the operating table, detection motor, coupling and speed regulator; Figure 5 for Figure 4 Detailed schematic diagram of the structure after being rotated to a certain angle; Figure 6 for Figure 5 A schematic detailed view of the plan structure along one of the angles; Figure 7 It is a detailed diagram of the three-dimensional structure of the air duct after the section; Figure 8 for Figure 7 Detailed schematic diagram of the structure after being rotated to a certain angle; Fig. 9 for Figure 8 A schematic detailed view of the plan structure along one of the angles; Fig.10 It is a detailed diagram of the enlarged structure of the wind pressure regulating component; Fig.11 for Fig.10 Detailed schematic diagram of the structure after being rotated to a certain angle; Fig.12 It is a schematic detailed diagram of the structure of the adjusting ring, the driving motor and one of the adjusting blades; Fig.13 It is a detailed diagram of the enlarged structure of the adjusting blade, the rotating rod and the adjusting rod; Fig.14 It is a detailed schematic diagram of the enlarged structure of the driving motor, the air guide tube and the fixed cone; Fig.15 for Fig.14 A schematic detailed diagram of the structure after being rotated to a certain angle; Fig.16 for Fig.15 A schematic detailed view of the plan structure along one of the angles; Fig.17 for Fig.16 Detailed schematic diagram of the plan structure along section BB; Fig.18 for Fig.16 Detailed schematic diagram of the three-dimensional structure along the BB section; Fig.19It is a schematic detailed diagram of the structure of the air blast assembly; Fig. 20 The present invention is a flow chart of the method.

[0023] Among them: 1. operating table; 2. detection motor; 3. coupling; 4. speed regulator; 5. air outlet; 6. air inlet; 7. wind pressure adjustment assembly; 8. cone; 9. driving motor; 10. blower assembly; 11. first bevel gear set; 12. propeller; 13. torque sensor; 14. air guide; 15. wind direction adjustment plate; 16. fixed cone disk; 17. second bevel gear set; 18. connecting sealing ring; 19. adjustment cylinder; 20. support frame; 21. adjustment blade; 22. toothed disk; 23. adjustment ring; 24. shaft; 25. rotating rod; 26. adjusting rod; 27. meshing teeth; 28. fixed frame; 29. ​​rotating shaft; 30. blower cover; 31. blower fan blade; 32. blower motor; 33. speed adjustment unit; 34. air cylinder; 35. wind direction adjustment assembly. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 1 and Figure 2The present invention discloses a propeller torque detection device, including a propeller 12, the input end of the propeller 12 is connected to a torque sensor 13, and the torque sensor 13 is used to accurately measure the torque generated when the propeller 12 rotates. It also includes a blower assembly 10, a wind tube 34 and a speed adjustment part 33, the blower assembly 10 is used to adjust the air flow rate in the wind tube 34, and the wind tube 34 is used to isolate the internal airflow from the outside to form a stable airflow environment.

[0027] See also Figure 3 The input end of the torque sensor 13 is connected to the output end of the speed regulating unit 33. The speed regulating unit 33 is used to adjust the speed of the propeller 12 to detect different speed conditions of the propeller 12. The inlet of the wind tube 34 is connected to the outlet of the blower assembly 10. The outlet of the wind tube 34 is provided with a propeller 12. The wind tube 34 is provided with a wind pressure regulating assembly 7 and a wind direction regulating assembly 35. The wind pressure regulating assembly 7 is located between the wind direction regulating assembly 35 and the propeller 12. The wind direction regulating assembly 35 is used to preliminarily adjust the rotation direction of the air in the wind tube 34 to reduce the impact of the air flow and the wind pressure regulating assembly 7; the rotation direction of the air in the wind tube 34 is further adjusted by the wind pressure regulating assembly 7, thereby changing the angle of the impact force on the propeller 12, thereby changing the torque on the propeller 12, and realizing the detection of the propeller 12 under different torque conditions. It should be noted that the rotation direction of the air in the wind tube 34 is opposite to the rotation direction of the propeller 12.

[0028] The present invention can detect the torque of the propeller 12 in three ways, namely, variable torque without changing speed, variable speed without changing torque, and uniform change of torque and speed. It can realize the detection of different torques of the propeller 12 at the same speed and the detection of different speeds at the same torque. It can be used to simulate the measurement of the torque and acceleration torque of the propeller 12 under fluids of different viscosities, and can also be used to simulate the measurement of the torque and acceleration torque when the viscosity changes. The detection is more in line with the actual situation, and the data obtained by the detection is more comprehensive and accurate.

[0029] Embodiment 1: See also Figure 1 , this embodiment discloses a propeller torque detection device, including a propeller 12, the input end of the propeller 12 is connected to a torque sensor 13, and also includes a blower assembly 10, a wind tube 34 and a speed adjustment unit 33; The input end of the torque sensor 13 is connected to the output end of the speed regulating unit 33; See also Figure 4 and Figure 5 The inlet of the wind tube 34 is connected to the outlet of the blowing assembly 10 , and a propeller 12 is provided at the outlet of the wind tube 34 . A wind pressure regulating assembly 7 and a wind direction regulating assembly 35 are provided inside the wind tube 34 , and the wind pressure regulating assembly 7 is located between the wind direction regulating assembly 35 and the propeller 12 .

[0030] Preferably, see Figure 3 The speed regulating unit 33 includes a detection motor 2 , the output end of the detection motor 2 is connected to the input end of the speed regulator 4 through a coupling 3 , and the output end of the speed regulator 4 is connected to the input end of the torque sensor 13 .

[0031] During specific operation: the driving end of the detection motor 2 drives the speed regulator 4 through the coupling 3, and the speed regulator 4 drives the torque sensor 13 and the propeller 12 to rotate. The purpose of using the coupling 3 here is to avoid direct connection between the driving end of the detection motor 2 and the input end of the speed regulator 4, which can effectively avoid the vibration caused by the axis deviation and improve the stability of the detection.

[0032] Preferably, the detection motor 2 and the speed regulator 4 are both fixedly mounted on the operating table 1, and the detection motor 2 is fixedly mounted on the operating table 1 via a pad, and a vibration-damping rubber plate is provided between the detection motor 2 and the pad. The vibration-damping rubber plate can reduce the vibration generated during the operation of the detection motor 2, thereby avoiding the influence of the vibration on the detection.

[0033] A blower 34 is provided on the operating table 1 .

[0034] Preferably, see Figure 4 and Figure 7 The air duct 34 includes an air outlet duct 5, an air inlet duct 6 and an adjusting duct 19. The air inlet duct 6 is connected to the air outlet duct 5 through the adjusting duct 19. The air inlet duct 6 is connected to the outlet of the blowing assembly 10. A propeller 12 is provided at the outlet of the air outlet duct 5. The adjusting duct 19 is provided with a wind pressure adjusting assembly 7. The air inlet duct 6 is provided with a wind direction adjusting assembly 35.

[0035] Preferably, see Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 The wind pressure regulating assembly 7 includes a support frame 20, the support frame 20 is fixedly connected to the regulating cylinder 19, the support frame 20 is located at the axis of the regulating cylinder 19, and a plurality of shafts 24 are movably provided on the regulating cylinder 19 at equal intervals in the radial direction, the shafts 24 are rotatably connected to the support frame 20, and an adjusting blade 21 is provided on the shaft 24, and the adjusting blade 21 is located inside the regulating cylinder 19; The input end of the shaft 24 is connected to the self-locking motor through a transmission device. The self-locking motor can drive the shaft 24 to rotate through the first transmission device, thereby driving the adjusting blade 21 to rotate.

[0036] Preferably, see Fig.12 and Fig.13The first transmission device includes an adjusting ring 23, which is sleeved on the adjusting cylinder 19. The adjusting ring 23 is rotatably connected to the adjusting cylinder 19. A plurality of meshing teeth 27 are provided on the adjusting ring 23. The output end of the self-locking motor is connected to the toothed disc 22, which meshes with the meshing teeth 27. A plurality of shafts 24 are each provided with a rotating rod 25. The shafts 24 and the rotating rod 25 are fixedly connected. The rotating rod 25 is movably connected to the adjusting rod 26, and the adjusting rod 26 is movably connected to the adjusting ring 23.

[0037] During specific operation: the self-locking motor drives the adjusting ring 23 to rotate through the toothed disc 22 and the meshing teeth 27, the adjusting ring 23 drives the shaft 24 to rotate through the adjusting rod 26 and the rotating rod 25, and the shaft 24 drives the adjusting blade 21 to rotate a certain angle to adjust the air rotation angle in the adjusting cylinder 19. The self-locking motor has a power-off self-locking function to prevent the toothed disc 22 and the meshing teeth 27 from rotating relative to each other after the self-locking motor is powered off. It should be noted that the air rotation direction in the adjusting cylinder 19 is opposite to the rotation direction of the propeller 12. The same adjusting ring 23 is used here to drive the shaft 24 through the adjusting rod 26 and the rotating rod 25, which can realize the synchronous rotation of the adjusting blades 21, ensure that the rotation angles of all adjusting blades 21 are consistent, which is beneficial to the stability of wind rotation, thereby improving the accuracy of detection.

[0038] Preferably, see Fig.15 , Fig.16 and Fig.17 The wind direction adjustment component 35 includes an air guide tube 14, which is fixedly connected to the air inlet tube 6. A rotating shaft 29 is provided inside the air guide tube 14, and a fixed cone disk 16 is movably sleeved on the rotating shaft 29. The rotating shaft 29 is provided with a plurality of flexible wind direction adjustment plates 15, and the wind direction adjustment plates 15 are fixedly connected to the fixed cone disk 16. The tip of the fixed cone disk 16 points to the air blowing component 10, and the gap between the air guide tube 14 and the fixed cone disk 16 is greater than the distance between two adjacent wind direction adjustment plates 15; The rotating shaft 29 is located at the axis of the air inlet cylinder 6, and the rotating shaft 29 is connected to the driving motor 9 through the second transmission device. Fig.14 .

[0039] During specific operation: the driving motor 9 drives the rotating shaft 29 to rotate through the second transmission device, thereby driving the wind direction adjustment plate 15 to rotate, and then causing the air to rotate in the air guide tube 14, so that the air has a certain rotation speed when entering the wind pressure adjustment component 7, reducing the impact of the flowing air on the wind pressure adjustment component 7, and making the rotating air output by the wind pressure adjustment component 7 more stable.

[0040] Preferably, see Fig. 9 A cone 8 is provided at the inlet of the air cylinder 34 , and a small cone opening of the cone 8 is connected to the outlet of the blowing assembly 10 .

[0041] Preferably, see Fig.19 The blower assembly 10 includes a blower hood 30, which is fixedly connected to the small cone mouth of the cone 8. A blower blade 31 is rotatably arranged inside the blower hood 30. A blower motor 32 is fixedly installed outside the blower hood 30, and the driving end of the blower motor 32 is connected to the input end of the blower blade 31.

[0042] Embodiment 2: Reference Figures 1 to 3 , see Figure 1 , this embodiment discloses a propeller torque detection device, including an operating table 1, a detection motor 2, a coupling 3, a speed regulator 4, an air outlet 5, an air pressure adjustment component 7, a blast component 10, a propeller 12 and a torque sensor 13, wherein the output shaft of the torque sensor 13 is fixedly connected to the input shaft of the propeller 12; The torque sensor 13 is also called a torque sensor, a torque sensor, a torque sensor and a torque meter, and is divided into two categories: dynamic and static. The dynamic torque sensor can also be called a torque sensor, a torque speed sensor, a non-contact torque sensor and a rotational torque sensor, etc. The torque sensor 13 is a detection of the torsional torque perception on various rotating or non-rotating mechanical parts. The torque sensor 13 converts the physical change of torque into an accurate electrical signal. The present invention can use an S2000 torque sensor.

[0043] The speed regulating unit 33 is installed on the operating table 1 and is used to adjust the speed of the propeller 12 . The speed regulating unit 33 includes a detection motor 2 fixedly installed on the operating table 1 , and a speed regulating component is installed between the detection motor 2 and the propeller 12 .

[0044] The speed regulating assembly includes a speed regulator 4 fixedly mounted on the operating table 1 , a driving end of the speed regulator 4 is fixedly connected to an input end of the torque sensor 13 , and the input end of the speed regulator 4 is connected to a driving end of the detection motor 2 via a coupling 3 .

[0045] The driving end of the detection motor 2 drives the speed regulator 4 through the coupling 3, thereby driving the torque sensor 13 and the propeller 12 to rotate. The purpose of using the coupling 3 here is to avoid the direct connection between the driving end of the detection motor 2 and the driving end of the speed regulator 4, which can effectively avoid the vibration caused by the axis deviation and improve the stability of the detection.

[0046] A pad is fixedly installed on the top of the operating table 1, and a vibration-damping rubber plate is fixedly installed between the pad and the detection motor 2. The function of the vibration-damping rubber plate is to reduce the vibration generated by the operation of the detection motor 2 to avoid the influence of the vibration on the detection.

[0047] Reference Figure 1 to Figure 13The present invention also includes a resistance adjusting unit, which is fixedly connected to the operating table 1. The resistance adjusting unit is used to adjust the resistance encountered by the propeller 12 during rotation, and is used to simulate the torque detection of the propeller 12 in waters with different viscosities. The resistance adjusting unit includes an air outlet 5 fixedly mounted on the side of the operating table 1, and a wind pressure adjusting component 7 is installed on the air outlet 5.

[0048] The wind pressure regulating assembly 7 includes a connecting sealing ring 18 fixedly connected to the air outlet tube 5, an adjusting tube 19 is fixedly installed on the connecting sealing ring 18, a support frame 20 is fixedly installed inside the adjusting tube 19, a plurality of fixing frames 28 are arranged on the supporting frame 20, a plurality of shafts 24 are rotatably installed on the fixing frames 28, an adjusting blade 21 is fixedly installed on each shaft 24, and the adjusting blade 21 rotates in the opposite direction to the propeller 12 when working. The side of the adjusting tube 19 away from the connecting sealing ring 18 is fixedly connected to the air inlet tube 6, and a driving motor 9 is installed on the air inlet tube 6. The driving motor 9 adopts a dual-axis bidirectional motor, and the first driving end of the driving motor 9 drives the shaft 24 to rotate through the first transmission device.

[0049] The rotation of the shaft 24 drives the adjusting blade 21 to rotate, thereby changing the angle of the adjusting blade 21, causing the wind to rotate when passing through the adjusting blade 21, thereby changing the impact angle between the wind and the propeller 12, thereby changing the impact force, thereby simulating the torque of the propeller 12 under different resistance conditions.

[0050] The function of the connecting sealing ring 18 is to connect the regulating tube 19 and the air outlet tube 5, to ensure the sealing of the connection between the regulating tube 19 and the air outlet tube 5, to avoid air leakage and vortex generation, to improve the stability of wind rotation in the air outlet tube 5, and thus to improve the stability of detection.

[0051] The driving motor 9 has an automatic locking function when shutting down. A toothed disc 22 is fixedly mounted on the first driving end of the driving motor 9. An adjusting ring 23 is rotatably mounted on the adjusting cylinder 19. A plurality of meshing teeth 27 meshing with the toothed disc 22 are fixedly mounted on the adjusting ring 23. A plurality of adjusting rods 26 are rotatably mounted on the adjusting ring 23. A rotating rod 25 is fixedly mounted on each shaft rod 24. Each rotating rod 25 is rotatably connected to the corresponding adjusting rod 26.

[0052] The first driving end of the driving motor 9 rotates to drive the toothed disc 22 to rotate, and under the action of the meshing teeth 27, the adjusting ring 23 is driven to rotate, and the adjusting ring 23 rotates to drive the adjusting rod 26 to move. Since the rotating rod 25 can drive the shaft rod 24 to rotate but cannot move, as the adjusting rod 26 moves, the adjusting rod 26 will drive one end of the rotating rod 25 to rotate around the shaft rod 24, thereby changing the angle of the adjusting blade 21. When the rotating rod 25 rotates, it will also drive the adjusting rod 26 to rotate in turn. At this time, the angle between the rotating rod 25 and the adjusting rod 26 will change.

[0053] The rotation adjustment method of the adjusting blade 21 of the present invention has the characteristics of high stability, and the rotation angle of each adjusting blade 21 is consistent, and the deflection angles of multiple adjusting blades 21 will not be different due to the misalignment between the toothed disc 22 and the meshing teeth 27. If the deflection angles of some adjusting blades 21 are different, the rotation angle of the natural wind will be affected, and vortices will be easily generated.

[0054] Embodiment three: The technical solution of this embodiment is different from that of the second embodiment in that: Figure 1~Figure 3 , Figure 14~Figure 19 The wind pressure regulating component 7 is fixedly installed with an air inlet 6 on one side away from the air outlet 5, and a wind direction regulating component 35 used in conjunction with the wind pressure regulating component 7 is installed in the air inlet 6; The wind direction adjustment component 35 includes an air guide tube 14 fixedly installed inside the air inlet tube 6, a fixed cone disk 16 is fixedly installed inside the air guide tube 14 through a frame, a plurality of wind direction adjustment plates 15 are fixedly installed on the fixed cone disk 16, and the wind direction adjustment plates 15 rotate in the same direction as the adjustment blades 21 when working. One side of each wind direction adjustment plate 15 is fixedly connected to the fixed cone disk 16, and the other side of the wind direction adjustment plate 15 is fixedly connected to the rotating shaft 29. The rotating shaft 29 is penetrated in the fixed cone disk 16 and is rotatably connected to the fixed cone disk 16. The second driving end of the drive motor 9 is connected to the rotating shaft 29 through a second transmission device.

[0055] When the angle of the adjusting blade 21 changes, the impact force between the wind in the air inlet 6 and the adjusting blade 21 will change. In order to reduce the impact force to a minimum, a rotating shaft 29 is designed. The rotating shaft 29 rotates to drive the wind direction adjusting plate 15 to rotate, so that the wind rotates in the air inlet 6. In this way, the wind can rotate in advance before reaching the adjusting blade 21, and the rotation angle is relatively consistent with the angle of the adjusting blade 21, thereby reducing the impact force between the wind and the adjusting blade 21. Since the wind rotates in the air inlet 6 and the air outlet 5, friction will be generated between the inner walls of the air inlet 6 and the air outlet 5, and the friction will reduce the rotation force of the wind. At this time, the wind is continued to be released and rotated by adjusting the blades 21 to improve the stability of the rotating wind.

[0056] By changing the rotation direction of the wind in the air inlet 6 and reducing the angle between the wind in the air inlet 6 and the adjusting blade 21 after entering the wind pressure regulating assembly 7 as much as possible, the impact force between the wind and the adjusting blade 21 can be reduced, thereby reducing the vibration of the adjusting blade 21, and effectively reducing the probability of the wind in the air outlet 5 forming a vortex due to the vibration of the adjusting blade 21, so that the wind in the air outlet 5 can rotate more regularly, thereby improving the stability of detection.

[0057] See also Fig.14The second transmission device includes a shaft body, which is movably arranged on the cone cylinder 8, and the cone cylinder 8 is fixedly installed on the air inlet cylinder 6. One end of the shaft body is connected to the rotating shaft 29 through the second bevel gear set 17, and the other end of the shaft body is connected to the second driving end of the driving motor 9 through the first bevel gear set 11.

[0058] As the angle of the adjustment blade 21 changes, the second driving end of the drive motor 9 drives the shaft to rotate through the first bevel gear set 11, and the shaft drives the rotating shaft 29 to rotate through the second bevel gear set 17, thereby driving the wind direction adjustment plate 15 to rotate, causing the wind direction adjustment plate 15 to twist and deform. The wind direction adjustment plate 15 is made of a metal material with a certain toughness. It can not only be twisted, but also has a certain strength to resist the impact of natural wind.

[0059] The gap between the air guide tube 14 and the wind direction adjustment plate 15, and the gap between the air guide tube 14 and the fixed cone disk 16 are greater than the spacing between two adjacent wind direction adjustment plates 15. The purpose of this arrangement is to increase the air flow rate after the natural wind in the air guide tube 14 enters the wind direction adjustment plate 15 due to the reduction in space, thereby increasing the air flow rate and reducing the influence of the friction of the inner wall of the air inlet tube 6 on the rotation of the natural wind; the fixed cone disk 16 adopts a conical design, which can guide the natural wind and effectively reduce vibration.

[0060] A blower assembly 10 is installed on one side of the air inlet cylinder 6 away from the wind pressure regulating assembly 7; the blower assembly 10 includes a blower cover 30 fixedly installed on the cone cylinder 8, a blower fan blade 31 is rotatably installed inside the blower cover 30, and a blower motor 32 is fixedly installed outside the blower cover 30, and the driving end of the blower motor 32 is connected to the input end of the blower fan blade 31, and the rotation of the driving end of the blower motor 32 drives the blower fan blade 31 to rotate, so that the outside air is blown into the air inlet cylinder 6 through the blower cover 30; Since the fan blades 31 also rotate, the natural wind blown into the air inlet tube 6 will also rotate to a certain extent, and the rotation direction is consistent with the rotation direction of the wind direction adjustment component 35 and the wind pressure adjustment component 7. At this time, the cone tube 8 is designed to expand the flow path of the natural wind, thereby reducing the flow rate of the natural wind, and increasing the influence of the friction of the inner wall of the cone tube 8 on the rotation of the natural wind, thereby reducing the rotation intensity of the natural wind in the cone tube 8, which is convenient for adjusting the wind direction of the natural wind in the later stage.

[0061] Based on the above structure, the specific operation steps of the present invention are as follows: First, the propeller 12 is connected to the torque sensor 13, and then the torque sensor 13 is installed on the driving end of the speed regulating component. Then, the detection motor 2 is started, and the driving end of the detection motor 2 drives the torque sensor 13 and the propeller 12 to rotate through the speed regulating component; During the torque detection process, since the propeller 12 rotates at a constant speed, the resistance and torque of the propeller 12 are constant. As the speed increases, the resistance increases, and thus the torque increases. However, the torque increases in a gradually decreasing manner. In order to keep the torque constant, the resistance needs to be changed. The outside wind is blown into the air inlet 6 by the air blowing assembly 10, and then the wind direction in the air duct 34 is changed by the wind pressure regulating assembly 7, so that the wind rotates in the air outlet duct 5, and the direction of rotation is opposite to the direction of rotation of the propeller 12, so that the direction of the impact force between the rotating wind and the propeller 12 changes. When the size of the natural wind is fixed, the size of the impact force is fixed, and the angle of the impact force changes, and the resistance of the propeller 12 is the component force of the impact force, the resistance on the propeller 12 will change with the change of the impact force angle; When natural wind blows on the wind pressure regulating component 7, it will cause the wind pressure regulating component 7 to vibrate. In order to reduce the vibration, the natural wind in the air inlet tube 6 is rotated through the wind direction adjusting component 35, and the direction of rotation is consistent with the direction of rotation of the wind after adjustment by the wind pressure regulating component 7. In this way, the natural wind can rotate into the wind pressure regulating component 7, which can reduce the impact force between the wind and the wind pressure regulating component 7, thereby reducing the vibration.

[0062] Based on the above structure, the present invention also discloses a propeller torque detection method, see Fig. 20 , including the following steps: S1. Start the speed regulating unit 33, and adjust the speed of the propeller 12 by the speed regulating unit 33, so as to realize the detection of the propeller 12 under different speed conditions; S2. Start the blower assembly 10, and adjust the air flow rate in the air cylinder 34 by the blower assembly 10, so as to adjust the air flow rate; S3. Start the wind direction adjustment component 35, and preliminarily adjust the rotation direction of the air in the wind tube 34 through the wind direction adjustment component 35, which is conducive to reducing the impact of the air on the wind pressure adjustment component 7, and is conducive to ensuring the stability of the rotating air in the wind tube 34; S4. Start the wind pressure regulating assembly 7, and further adjust the rotation direction of the air in the wind tube 34 through the wind pressure regulating assembly 7, change the angle of the impact force on the propeller 12, and thus change the torque on the propeller 12; S5. The torque applied to the propeller 12 is collected through the torque sensor 13 .

[0063] By repeating the above steps, the detection of different torques of the propeller 12 at the same rotation speed and the detection of different rotation speeds at the same torque can be realized, and the detection results are comprehensive and accurate.

[0064] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A propeller torque detection device, comprising a propeller (12), wherein an input end of the propeller (12) is connected to a torque sensor (13), wherein: It also includes an air blowing assembly (10), an air cylinder (34) and a speed regulating unit (33); The input end of the torque sensor (13) is connected to the output end of the speed regulating unit (33); The inlet of the wind tube (34) is connected to the outlet of the air blowing assembly (10); a propeller (12) is provided at the outlet of the wind tube (34); a wind pressure regulating assembly (7) and a wind direction regulating assembly (35) are provided inside the wind tube (34); the wind pressure regulating assembly (7) is located between the wind direction regulating assembly (35) and the propeller (12).

2. The propeller torque detection device according to claim 1, characterized in that: The speed regulating unit (33) comprises a detection motor (2), the output end of the detection motor (2) is connected to the input end of the speed regulator (4) via a coupling (3), and the output end of the speed regulator (4) is connected to the input end of the torque sensor (13).

3. The propeller torque detection device according to claim 2, characterized in that: The detection motor (2) and the speed regulator (4) are both fixedly mounted on the operating table (1); the detection motor (2) is fixedly mounted on the operating table (1) via a pad; a vibration-damping rubber plate is provided between the detection motor (2) and the pad; A blower (34) is provided on the operating table (1).

4. The propeller torque detection device according to claim 1, characterized in that: The wind tube (34) comprises an air outlet tube (5), an air inlet tube (6) and an adjustment tube (19); the air inlet tube (6) is connected to the air outlet tube (5) via the adjustment tube (19); the air inlet tube (6) is connected to the outlet of the air blowing assembly (10); a propeller (12) is provided at the outlet of the air outlet tube (5); a wind pressure adjustment assembly (7) is provided on the adjustment tube (19); and a wind direction adjustment assembly (35) is provided on the air inlet tube (6).

5. The propeller torque detection device according to claim 4, characterized in that: The wind pressure regulating assembly (7) comprises a support frame (20), the support frame (20) being fixedly connected to the regulating cylinder (19), the support frame (20) being located at the axis of the regulating cylinder (19), a plurality of shafts (24) being movably provided at equal intervals along a radial direction on the regulating cylinder (19), the shafts (24) being rotatably connected to the support frame (20), the shafts (24) being provided with regulating blades (21), and the regulating blades (21) being located inside the regulating cylinder (19); The input end of the shaft (24) is connected to a self-locking motor via a transmission device, and the self-locking motor can drive the shaft (24) to rotate via a first transmission device, thereby driving the adjusting blade (21) to rotate.

6. The propeller torque detection device according to claim 5, characterized in that: The first transmission device comprises an adjusting ring (23), the adjusting ring (23) being sleeved on the adjusting cylinder (19), the adjusting ring (23) being rotatably connected to the adjusting cylinder (19), a plurality of meshing teeth (27) being provided on the adjusting ring (23), an output end of the self-locking motor being connected to a toothed disc (22), the toothed disc (22) being meshed with the meshing teeth (27), a plurality of shafts (24) being provided with rotating rods (25), the rotating rods (25) being movably connected to the adjusting rods (26), and the adjusting rods (26) being movably connected to the adjusting ring (23).

7. The propeller torque detection device according to claim 4, characterized in that: The wind direction adjustment component (35) comprises an air guide tube (14), the air guide tube (14) being fixedly connected to the air inlet tube (6), a rotating shaft (29) passing through the interior of the air guide tube (14), a fixed cone disk (16) being movably sleeved on the rotating shaft (29), a plurality of flexible wind direction adjustment plates (15) being provided on the rotating shaft (29), the wind direction adjustment plates (15) being fixedly connected to the fixed cone disk (16), the tip of the fixed cone disk (16) pointing toward the air blowing component (10), and a gap between the air guide tube (14) and the fixed cone disk (16) being larger than a gap between two adjacent wind direction adjustment plates (15); The rotating shaft (29) is located at the axis of the air inlet cylinder (6), and the rotating shaft (29) is connected to the driving motor (9) via a second transmission device.

8. The propeller torque detection device according to claim 1, characterized in that: A cone cylinder (8) is provided at the inlet of the wind cylinder (34), and the small cone opening of the cone cylinder (8) is connected to the outlet of the air blowing assembly (10).

9. The propeller torque detection device according to claim 8, characterized in that: The air blowing assembly (10) comprises an air blowing hood (30), the air blowing hood (30) being fixedly connected to the small cone opening of the cone cylinder (8), a blower blade (31) being rotatably arranged inside the air blowing hood (30), and an air blowing motor (32) being fixedly mounted outside the air blowing hood (30), the driving end of the air blowing motor (32) being connected to the input end of the blower blade (31).

10. A propeller torque detection method, using a propeller torque detection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Starting the rotation speed regulating unit (33) to regulate the rotation speed of the propeller (12) through the rotation speed regulating unit (33); Starting the air blowing assembly (10) to adjust the air flow rate in the air cylinder (34) through the air blowing assembly (10); Starting the wind direction adjustment component (35) to preliminarily adjust the rotation direction of the air in the wind tube (34) through the wind direction adjustment component (35); Starting the wind pressure regulating component (7), further adjusting the rotation direction of the air in the wind tube (34) through the wind pressure regulating component (7), changing the angle of the impact force applied to the propeller (12), and thus changing the torque applied to the propeller (12); The torque applied to the propeller (12) is collected by a torque sensor (13).

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