Thrust and torque test platform of coaxial double-paddle driving device

Abstract

The invention relates to the technical field of power testing devices, in particular to a thrust and torque testing platform of a coaxial double-paddle driving device, which is characterized in that a linear guide rail is fixedly mounted on a base, a main body frame is slidably mounted on the linear guide rail and is provided with a tension and compression sensor, a stand column is fixedly mounted on the main body frame, and a servo motor is fixedly mounted at the top of the stand column; torque sensor supports are fixedly installed at the two ends of the horizontal telescopic sliding rail respectively, torque sensors are installed on the torque sensor supports, the paddle driving motor installation support is connected with the corresponding torque sensors, and the tension and compression sensor, the torque sensors, the servo motor and the paddle driving motor are connected with the controller. The test platform provided by the invention can truly, accurately and synchronously measure the thrust and the torque of the coaxial double-paddle driving device, determines the numerical value of the optimal distance between the driving motors of the coaxial double-paddle driving device, and is relatively wide in application range and high in test efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of power test devices, and particularly relates to a thrust and torque test platform for a coaxial dual-propeller drive device. Background Art

[0002] Electric power is a relatively clean, efficient, and large-scale energy source. Just like electric vehicles, currently, pure electric manned or unmanned aircraft have become a trend. The power system of an electric aircraft includes four parts: a driving motor, an electronic speed controller, a battery, and a propeller. The driving motor and the propeller are matched to form the driving device of the electric aircraft. Currently, the most commonly used one is the coaxial dual-propeller drive device. Whether the driving motor and the propeller are properly matched is related to whether the power of the electric aircraft is strong.

[0003] However, the quality and performance of the propellers and driving motor power systems of electric aircrafts in the market are also uneven, and they can only be used on the aircraft after being tested by a test platform. Among them, the thrust and torque of the propellers of electric aircrafts are two important parameters. Before the electric aircraft is put into use, it is necessary to measure stably and accurately, and find an appropriate matching scheme for the driving motor and the propeller.

[0004] Currently, the existing test platforms still have the following disadvantages: 1. The method commonly used in the existing test platforms is to measure by combining a single motor and a propeller. Its disadvantage is that it cannot restore the real working state of the motor and the propeller. Currently, more and more power systems adopt the coaxial dual-propeller drive scheme. Therefore, the thrust and torque of the coaxial dual-propeller drive device cannot be measured truly and accurately.

[0005] 2. The existing test platforms cannot measure the optimal distance value between the driving motors of the coaxial dual-propeller drive device in real time and accurately.

[0006] 3. The existing test platforms cannot meet the test requirements of propeller blades of different lengths and driving motors of different models. Multiple test devices are required to complete the test, which is costly and inefficient.

[0007] 4. The existing test devices have a single function. For the thrust and torque tests of unmanned aircrafts, they need to be carried out one by one, and do not have the conditions for comprehensive testing, resulting in reduced test efficiency. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a thrust and torque test platform for a coaxial dual-propeller drive device, which can synchronously measure the thrust and torque of the coaxial dual-propeller drive device truly and accurately, determine the optimal distance value between the driving motors of the coaxial dual-propeller drive device, and has a wide range of applications and high test efficiency.

[0009] The present invention is realized through the following technical solutions: A thrust and torque test platform for a coaxial dual-propeller drive device, comprising a base, a linear guide rail, a main frame, a column, an outer housing, a servo motor, a horizontal telescopic slide rail, a propeller drive motor mounting bracket and a controller. The linear guide rail is fixedly installed on the base. The main frame is slidably installed on the linear guide rail, and a tension and compression sensor is installed between the base and the main frame. The column is fixedly installed on the main frame. The outer housing is fixedly installed on the top of the column. The servo motor is fixedly installed on the outer housing to drive the horizontal telescopic slide rail to expand and contract. Torque sensor brackets are fixedly installed at both ends of the horizontal telescopic slide rail. Torque sensors are installed on the torque sensor brackets. The propeller drive motor mounting brackets are two and are respectively connected to the corresponding torque sensors. The propeller drive motor to be tested is fixedly installed on the corresponding propeller drive motor mounting bracket and drives the propeller to rotate. The tension and compression sensor, the torque sensor, the servo motor and the propeller drive motor are respectively connected to the controller.

[0010] Furthermore, the propeller drive motor mounting brackets include multiple models.

[0011] Optimally, the torque sensor is fixedly connected to the propeller drive motor mounting bracket by bolts, and the propeller drive motor of the coaxial dual-propeller drive device to be tested is fixedly connected to the propeller drive motor mounting bracket by bolts.

[0012] Furthermore, the horizontal telescopic slide rail includes a horizontal outer slide rail, a horizontal inner slide rail and a horizontal telescopic slide rail gear. The horizontal outer slide rail is slidably installed in the outer housing, and a horizontal outer slide rail rack is provided at the bottom of the horizontal outer slide rail. The horizontal inner slide rail is slidably installed in the horizontal outer slide rail, and a horizontal inner slide rail rack is provided at the top of the horizontal inner slide rail. The horizontal telescopic slide rail gear is driven by the servo motor to rotate, and the horizontal telescopic slide rail gear meshes with the horizontal outer slide rail rack and the horizontal inner slide rail rack respectively.

[0013] Optimally, a tension and compression sensor bracket is fixedly installed on the base, and the tension and compression sensor is fixedly installed on the tension and compression sensor bracket and is connected to the main frame.

[0014] Optimally, the column is a telescopic column.

[0015] Furthermore, the telescopic column includes a vertical lower guide rail and a vertical upper slide rail. The vertical lower guide rail is fixedly installed on the main frame, and a chute is provided at the upper part of the vertical lower guide rail. A telescopic column gear is rotatably installed at the upper part of the chute of the vertical lower guide rail. The telescopic column gear is driven by a stepping motor to rotate. The vertical upper slide rail is slidably installed in the chute, and a vertical upper slide rail rack meshing with the telescopic column gear is provided in the vertical upper slide rail.

[0016] Optimized, the stepping motor is a double-output shaft stepping motor, and there are two telescopic column gears.

[0017] Furthermore, the main body frame and the column bracket are provided with diagonal braces.

[0018] Advantages of the invention: The thrust and torque test platform for a coaxial dual-propeller drive device provided by the present invention has the following advantages: 1. By setting the servo motor, the horizontal telescopic slide rail, and the torque sensor, the test platform can truly realize the coaxial test of the coaxial dual-propeller drive device. The measured torque can accurately reflect the real torque of the coaxial dual-propeller drive device, and can simultaneously determine the optimal distance value between the drive motors of the coaxial dual-propeller drive device.

[0019] 2. Through the settings of the servo motor, the horizontal telescopic slide rail, the linear guide rail, the main body frame, and the tension and compression sensor, the test platform can truly realize the coaxial test of the coaxial dual-propeller drive device. The measured tensile force or pressure can accurately reflect the real force of the coaxial dual-propeller drive device, and has the synchronization of the test.

[0020] 3. By replacing the blade drive motor mounting brackets of different models, the test requirements of different models of blade drive motors can be realized. By setting the telescopic column, the test requirements of different models of propeller blades can be adapted, expanding the test range, reducing the test cost, and improving the test efficiency. Description of the drawings

[0021] Figure 1 It is a schematic diagram of the test structure of the coaxial dual-propeller drive device of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the single-propeller drive device of the present invention.

[0023] Figure 3 It is a schematic cross-sectional view of the test of the coaxial dual-propeller drive device of the present invention.

[0024] In the figure: 1, base; 2, linear guide rail; 3, main body frame; 4, diagonal brace; 5, tension and compression sensor bracket; 6, column; 7, blade; 8, stepping motor; 9, blade drive motor; 10, blade drive motor mounting bracket; 11, outer housing; 12, servo motor; 13, tension and compression sensor; 14, torque sensor; 15, torque sensor bracket; 16, horizontal inner slide rail; 17, horizontal telescopic slide rail gear; 18, horizontal outer slide rail; 19, vertical upper slide rail; 20, vertical lower guide rail; 21, chute; 22, telescopic column gear. Detailed implementation manners

[0025] A thrust and torque test platform for a coaxial dual-propeller drive device, the structural schematic diagram is asFigures 1 to 3 As shown in the figure, it includes a base 1, a linear guide rail 2, a main body frame 3, a column 6, a housing 11, a servo motor 12, a horizontal telescopic slide rail, a blade drive motor mounting bracket 10 and a controller (not shown). The linear guide rail is fixedly installed on the base. The main body frame is slidably installed on the linear guide rail, and a tension and compression sensor 13 is installed between the base and the main body frame. The column is fixedly installed on the main body frame. The housing is fixedly installed on the top of the column. The servo motor is fixedly installed on the housing to drive the horizontal telescopic slide rail to expand and contract. Torque sensor brackets 15 are fixedly installed at both ends of the horizontal telescopic slide rail respectively. A torque sensor 14 is installed on the torque sensor bracket. The blade drive motor mounting brackets are two and are respectively connected to the corresponding torque sensors. The blade drive motor 9 to be tested is fixedly installed on the corresponding blade drive motor mounting bracket and drives the blade 7 to rotate. The tension and compression sensor, the torque sensor, the servo motor and the blade drive motor are respectively connected to the controller.

[0026] Since the housing is fixedly installed on the top of the column, the servo motor is fixedly installed on the housing to drive the horizontal telescopic slide rail to perform telescopic movement. Torque sensor brackets are fixedly installed at both ends of the horizontal telescopic slide rail respectively. A torque sensor is installed on the torque sensor bracket. The blade drive motor mounting brackets are respectively connected to the corresponding torque sensors. The blade drive motor of the coaxial dual-blade drive device to be tested is fixedly installed on the corresponding blade drive motor mounting bracket and drives the blade to rotate, so that the test platform truly simulates the working state of the coaxial dual-blade drive device, and truly realizes the coaxial test of the coaxial dual-blade drive device. Only by simply adding the values measured by the two torque sensors can the torque of the coaxial dual-blade drive device be obtained. The measured torque can truly and accurately reflect the real torque of the coaxial dual-blade drive device.

[0027] Also, since the linear guide rail is fixedly installed on the base, the main body frame is slidably installed on the linear guide rail, and a tension and compression sensor is installed between the base and the main body frame. The column is fixedly installed on the main body frame. The housing is fixedly installed on the top of the column. When the blade drive motor drives the blade to rotate, the tensile force or pressure generated by the two blades will act on the main body frame together to form a resultant force. The main body frame moves along the linear guide rail under the action of the resultant force, thereby applying a tensile force or pressure to the tension and compression sensor. The tension and compression sensor directly measures the resultant force of the coaxial dual-blade drive device in this working state. The measured tensile force or pressure can truly and accurately reflect the real force of the coaxial dual-blade drive device, and has the synchronization of the test, so as to provide accurate data support for the matching of the blade drive motor and the blade in the coaxial dual-blade drive device during the R & D process, and can also provide guarantee for inspecting whether the blade drive motor and the blade of the coaxial dual-blade drive device are qualified during the production inspection process.

[0028] In addition, by driving the horizontal telescopic slide rail with a servo motor, the numerical value of the optimal spacing of the blade drive motors of the coaxial dual-propeller drive device can be determined simultaneously. During the test, the controller controls the blade drive motors to drive the blades to rotate at the rated power, and at the same time controls the servo motor to drive the horizontal telescopic slide rail to expand and contract. The tension and compression sensor and the torque sensor monitor the corresponding tension and compression forces and torques in real time, and transmit the corresponding information to the controller. When the numerical value of the tension and compression force measured by the tension and compression sensor reaches the maximum, the distance between the two blade drive motors is the numerical value of the optimal spacing of the blade drive motors.

[0029] Furthermore, the blade drive motor mounting brackets include multiple models. By replacing the blade drive motor mounting brackets of different models, the test requirements of blade drive motors of different models can be met.

[0030] Optimally, the torque sensor is fixedly connected to the blade drive motor mounting bracket through bolts, which facilitates the replacement of the blade drive motor mounting brackets of different models. The blade drive motor is fixedly connected to the blade drive motor mounting bracket through bolts, which facilitates the testing of blade drive motors of different models.

[0031] Specifically, the structure of the horizontal telescopic slide rail is as follows: it includes a horizontal outer slide rail 18, a horizontal inner slide rail 16, and a horizontal telescopic slide rail gear 17. The horizontal outer slide rail is slidably mounted inside the housing, and a horizontal outer slide rail rack is provided at the bottom of the horizontal outer slide rail. The horizontal inner slide rail is slidably mounted inside the horizontal outer slide rail, and a horizontal inner slide rail rack is provided at the top of the horizontal inner slide rail. The horizontal telescopic slide rail gear is driven by a servo motor to rotate, and the horizontal telescopic slide rail gear meshes with the horizontal outer slide rail rack and the horizontal inner slide rail rack respectively.

[0032] When the servo motor drives the gear to rotate, it will drive the horizontal outer slide rail and the horizontal inner slide rail to expand and contract simultaneously, thereby realizing the adjustment of the optimal spacing of the blade drive motors of the two coaxial dual-propeller drive devices, and the adjustment speed is relatively fast.

[0033] Optimally, a tension and compression sensor bracket 5 is fixedly mounted on the base. The tension and compression sensor is fixedly mounted on the tension and compression sensor bracket and connected to the main frame, which facilitates the fixation of the tension and compression sensor.

[0034] Optimally, the column is a telescopic column. By adjusting the telescopic length of the column, the test requirements of blades of different models can be adapted.

[0035] Specifically, the telescopic column can adopt the following structure: It includes a vertical lower guide rail 20 and a vertical upper slide rail 19. The vertical lower guide rail is fixedly installed on the main frame, and a chute 21 is provided at the upper part of the vertical lower guide rail. A telescopic column gear 22 is rotatably installed at the upper position of the chute of the vertical lower guide rail. The telescopic column gear is driven to rotate by a stepper motor 8. The vertical upper slide rail is slidably installed in the chute, and a vertical upper slide rail rack meshing with the telescopic column gear is provided in the vertical upper slide rail. The stepper motor drives the telescopic column gear to rotate, thereby driving the vertical upper slide rail to expand and contract along the chute, realizing the adjustment of the column height to meet the test requirements of different types of blades.

[0036] The stepper motor can preferably be a stepper motor with double output shafts. There are two telescopic column gears. The two output shafts of the stepper motor drive the corresponding telescopic column gears to rotate. While increasing the power, it enhances the stability during the telescopic process of the telescopic column and prevents the components above from being damaged.

[0037] Furthermore, a diagonal brace 4 is provided between the main frame and the column, making the structure of the column more stable.

[0038] In summary, the thrust and torque test platform for a coaxial dual-propeller drive device provided by the present invention can truly and accurately synchronously measure the thrust and torque of the coaxial dual-propeller drive device, determine the numerical value of the optimal spacing between the drive motors of the coaxial dual-propeller drive device, and has a relatively wide application range and high test efficiency.

[0039] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A thrust and torque test platform for a coaxial dual-propeller drive device, characterized in that: It includes a base, a linear guide rail, a main body frame, a column, a housing, a servo motor, a horizontal telescopic slide rail, a blade drive motor mounting bracket and a controller. The linear guide rail is fixedly installed on the base. The main body frame is slidably installed on the linear guide rail, and a tension and compression sensor is installed between the base and the main body frame. The column is fixedly installed on the main body frame. The housing is fixedly installed at the top of the column. The servo motor is fixedly installed on the housing to drive the horizontal telescopic slide rail to extend and retract. Torque sensor brackets are fixedly installed at both ends of the horizontal telescopic slide rail. Torque sensors are installed on the torque sensor brackets. The blade drive motor mounting brackets are two and are respectively connected to the corresponding torque sensors. The blade drive motor to be tested is fixedly installed on the corresponding blade drive motor mounting bracket and drives the blade to rotate. The tension and compression sensor, the torque sensor, the servo motor and the blade drive motor are respectively connected to the controller.

2. The thrust and torque test platform of a coaxial dual-propeller drive device according to claim 1, characterized in that: The blade drive motor mounting brackets include multiple models.

3. The thrust and torque test platform of a coaxial dual-propeller drive device according to claim 2, characterized in that: The torque sensor is fixedly connected to the blade drive motor mounting bracket by bolts, and the blade drive motor of the coaxial dual-blade drive device to be tested is fixedly connected to the blade drive motor mounting bracket by bolts.

4. The thrust and torque test platform of a coaxial dual-propeller drive device according to claim 1, characterized in that: The horizontal telescopic slide rail includes a horizontal outer slide rail, a horizontal inner slide rail and a horizontal telescopic slide rail gear. The horizontal outer slide rail is slidably installed in the housing, and a horizontal outer slide rail rack is provided at the bottom of the horizontal outer slide rail. The horizontal inner slide rail is slidably installed in the horizontal outer slide rail, and a horizontal inner slide rail rack is provided at the top of the horizontal inner slide rail. The horizontal telescopic slide rail gear is driven by the servo motor to rotate, and the horizontal telescopic slide rail gear meshes with the horizontal outer slide rail rack and the horizontal inner slide rail rack respectively.

5. The thrust and torque test platform of a coaxial dual-propeller drive device according to claim 1, characterized in that: A tension and compression sensor bracket is fixedly installed on the base. The tension and compression sensor is fixedly installed on the tension and compression sensor bracket and is connected to the main body frame.

6. The thrust and torque test platform for a coaxial dual-propeller drive device according to claim 1, characterized in that: The column is a telescopic column.

7. The thrust and torque test platform of a coaxial dual-propeller drive device according to claim 6, characterized in that: The telescopic column includes a vertical lower guide rail and a vertical upper slide rail. The vertical lower guide rail is fixedly installed on the main body frame, and a chute is provided at the upper part of the vertical lower guide rail. A telescopic column gear is rotatably installed at the upper part of the chute of the vertical lower guide rail. The telescopic column gear is driven by a stepper motor to rotate. The vertical upper slide rail is slidably installed in the chute, and a vertical upper slide rail rack meshing with the telescopic column gear is provided in the vertical upper slide rail.

8. The thrust and torque test platform of a coaxial dual-propeller drive device according to claim 7, characterized in that: The stepper motor is a stepper motor with double output shafts, and there are two telescopic column gears.

9. The thrust and torque test platform of a coaxial dual-propeller drive device according to claim 1, characterized in that: Diagonal braces are provided between the main body frame and the column bracket.

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