CN-115452339-B - Temperature control type electric propeller testing system and testing method

CN115452339BCN 115452339 BCN115452339 BCN 115452339BCN-115452339-B

Abstract

The invention relates to the field of propeller testing, and particularly discloses a temperature control type electric propeller testing system and a temperature control type electric propeller testing method, wherein the temperature control type electric propeller testing system comprises a testing module, a supporting component and a movement device; the test module comprises a test platform and a test assembly arranged on the test platform, the test assembly comprises a motor mounting seat, a propeller, a rotating speed sensor, a torque sensor, a motor and a temperature control box, the support assembly comprises a frame, a rotating shaft is arranged on the central axis of the frame, the test platform is integrally hinged to the frame through the rotating shaft, and the test platform can swing up and down around the rotating shaft under the drive of the motion device. According to the invention, through the combination of the rotating speed sensor, the S-shaped tension sensor, the torque sensor and the movement device, the push-pull force and the torque generated by the motor-driven propeller under different poses at different temperatures can be accurately measured, the measuring authenticity and accuracy are improved, and the device is simple in structure, efficient and accurate.

Inventors

HE QIANG
XU YUAN
WANG MINGWU
Wan Hengcheng
LIU XIANG
MENG YAWEI
HE YUANHUA

Assignees

中国民用航空飞行学院
中国民用航空飞行学院

Dates

Publication Date: 20260421
Application Date: 20220801
Priority Date: 20220801

Claims (4)

1. The testing method of the temperature-controlled electric screw propeller testing system is characterized in that the temperature-controlled electric screw propeller testing system comprises a testing module, a supporting component and a moving device (5), the testing module comprises a testing platform (4) and a testing component arranged on the testing platform, the testing component comprises a motor mounting seat (43), a screw propeller (45), a rotating speed sensor (46), a torque sensor (47), a motor (49) and a temperature control box (410), the supporting component comprises a frame (2), a rotating shaft (415) is arranged on the central axis of the frame (2), the testing platform (4) is integrally hinged to the frame through the rotating shaft, the testing platform can swing up and down around the rotating shaft (415) under the driving of the moving device (5), a guide rail (41) is fixedly arranged on the testing platform (4), and the motor mounting seat (43) is arranged on the guide rail (41) in a sliding mode through a sliding block (42) and can reciprocate along the guide rail; The rear end of the test platform (4) is provided with a tension bracket (413), the middle part of the push-pull force converter (412) is hinged on the tension bracket, the S-shaped tension sensor (414) is fixedly arranged at the tail part of the test platform (4), the upper end of the push-pull force converter (412) is connected with the motor mounting seat (43) through a tension rod (411), and the lower end of the push-pull force converter is connected with the S-shaped tension sensor (414); the temperature control box (410) is fixedly arranged on the motor mounting seat (43), and the motor (49) is arranged in the temperature control box, wherein the temperature of the temperature control box is controllable, and the temperature environment of the motor working at different flying heights of the aircraft can be simulated; The motor mounting seat (43) is fixedly provided with two bearing seats (48), and a motor transmission shaft (44) of the motor (49) extends under the support of the bearing seats (48), the screw propeller (45) is fixedly arranged at the end part of the motor transmission shaft, and the torque sensor (47) is fixedly arranged between the two bearing seats and used for detecting the torque generated by the screw propeller in the flying pose; the motion device (5) comprises a pull rod (51), an eccentric wheel (52) and an electric motor (53), wherein the electric motor is fixedly arranged on the frame, and the eccentric wheel is arranged on the electric motor; the test method comprises the following steps: S1, adjusting the temperature through a temperature control box (410), and simulating the working temperature environment of a motor of the aircraft at different flying heights; S2, starting a motor (49), wherein a motor transmission shaft (44) drives a propeller (45) to start rotating, the rotating speed of the propeller is measured through a rotating speed sensor (46) arranged on the motor transmission shaft, and the torque generated by the propeller in the flying pose is measured through a torque sensor (47) fixedly arranged between bearing seats; S3, pulling force generated when the propeller (45) rotates drives a motor mounting seat (43) to move along a guide rail through a sliding block, the motor mounting seat drives the upper part of a push-pull force converter (412) to move through a pulling rod (411) so as to drive the push-pull force converter to rotate around a hinge point, the lower end of the push-pull force converter is connected with an S-shaped pulling force sensor (414), and pulling force generated when the propeller rotates is converted into pushing force and is measured through the S-shaped pulling force sensor; s4, starting an electric motor (53) in the motion device (5), driving an eccentric wheel to start working by the electric motor, and driving a test platform to swing up and down along with a rotating shaft around a rack by the eccentric wheel so as to simulate the pitching and the diving of the aircraft in the actual flight process; S5, through coupling with a rotating speed sensor (46), a torque sensor (47) and an S-shaped tension sensor (414), the motion parameters of the motor and the propeller at different temperatures and different inclinations are comprehensively and accurately measured.
2. The test method of the temperature-controlled electric propeller test system according to claim 1, wherein a propeller protection cover (3) is fixedly arranged at the front end of the test platform (4) and used for avoiding safety accidents caused by collision of a propeller to a frame in the rotating process, and a rotating speed sensor (46) is arranged at a shaft hole at the end part of a motor transmission shaft close to the propeller protection cover (3) and used for detecting the rotating speed of the propeller in the flying pose.
3. The testing method of the temperature-controlled electric propeller testing system of claim 1, wherein the bottom of the stand (2) is provided with a fixing plate (1), and a plurality of ground nail holes (6) are symmetrically distributed on the fixing plate (1) and are used for fixing the stand on the ground.
4. The method for testing the temperature-controlled electric propeller testing system according to claim 1, wherein the machine frame is fixed on the ground through the ground nail holes (6) on the fixing plate (1) in the testing process, so that the influence of friction force and displacement generated in the moving process of the machine frame (2) on the measurement parameter data is avoided.

Description

Temperature control type electric propeller testing system and testing method Technical Field The invention relates to the technical field of propeller testing, in particular to a temperature control type electric propeller testing system and a temperature control type electric propeller testing method. Background The electric drive propeller propulsion system is driven by a motor to drive the propeller to rotate, so that tension and lift force are generated, and the airframe is driven to fly. The performance of the propeller is an important part of the aircraft in the design and manufacturing process, performance test is required to be carried out on the propeller and the driving motor before the aircraft is put into use, test data has an important effect on the design of the electric aircraft, but parameters of the electric aircraft are difficult to directly measure due to the complex flight environment and working condition of the aircraft in the flight process. At present, a bench test system is mainly adopted for testing the performance of the propeller at home and abroad, when the test is performed, the situation that the change of temperature in the flight process lacks of tension and rotation speed change of the propeller at different temperatures is ignored, the change of the flight position of the aircraft in the flight process is various, the existing test bench can only test the power parameters of the aircraft in the vertical direction, the test data are incomplete, various performance parameters of the aircraft in the flight process are difficult to comprehensively reflect, and in order to accurately measure various performance indexes of the aircraft in the flight process, an electric propeller test bench with controllable motor temperature and adjustable propeller position is designed. The device can accurately reflect the real motion parameters of the propeller, and has simple structure, high efficiency and accuracy. Disclosure of Invention In order to solve the problems in the prior art, the invention provides a temperature control type electric propeller testing system and a temperature control type electric propeller testing method, wherein a motor is arranged in a temperature control box, the change of the working temperature of the motor of an aircraft at different flying heights can be simulated, and the changes of the tension and the torque generated by driving the propeller at different temperatures and the propeller at different flying positions by combining a rotating speed sensor, a tension sensor and a torque sensor with a movement device are solved, so that the problems mentioned in the background art are solved. The temperature control type electric propeller testing system comprises a testing module, a supporting component and a moving device, wherein the testing module comprises a testing platform and a testing component arranged on the testing platform, the testing component comprises a motor mounting seat, a propeller, a rotating speed sensor, a torque sensor, a motor and a temperature control box, the supporting component comprises a frame, a rotating shaft is arranged on the central axis of the frame, the testing platform is integrally hinged to the frame through the rotating shaft, and the testing platform can swing up and down around the rotating shaft under the drive of the moving device. Preferably, the test platform is fixedly provided with a guide rail, and the motor mounting seat is arranged on the guide rail in a sliding manner through a sliding block and can reciprocate along the guide rail. Preferably, the temperature control box is fixedly arranged on the motor mounting seat, and the motor is arranged in the temperature control box, wherein the temperature of the temperature control box is controllable, and the temperature environment of the motor working at different flying heights of the aircraft can be simulated; The motor mounting seat is fixedly provided with two bearing seats, a motor transmission shaft of the motor extends under the support of the bearing seats, the screw propeller is fixedly arranged at the end part of the motor transmission shaft, and the torque sensor is fixedly arranged between the two bearing seats and used for detecting the torque generated by the screw propeller in the flying pose. Preferably, the front end of the test platform is fixedly provided with a propeller protection cover for avoiding safety accidents caused by collision of the propeller to the frame in the rotation process, and a rotation speed sensor for detecting the rotation speed of the propeller in the flying pose is arranged at a shaft hole of the end part of the motor transmission shaft close to the propeller protection cover. Preferably, the rear end of the testing platform is provided with a tension bracket, the middle part of the push-pull force converter is hinged on the tension bracket, the S-shaped tension sensor is fixedly arranged at the tail part of the