Unmanned aerial vehicle hosting test device

Abstract

The utility model discloses an unmanned aerial vehicle hosting test device which comprises an upper clamp and a lower clamp which are used for fixing an unmanned aerial vehicle, the clamps are connected with a suspender, the upper end of the suspender is connected with the front end of a safety rope, the safety rope has a safety length, and the safety rope passes through a pulley installed on a cross beam and the rear end of the safety rope is connected with a take-up and pay-off wheel on a motor. The motor rotates to control winding and unwinding of the safety rope, the upper end of the suspender is connected with the linear displacement sensor, the linear displacement sensor monitors the moving distance and speed of the suspender, and the motor is controlled to wind and unwind the safety rope through the linear displacement sensor. The device is provided with an emergency button, when the emergency button is pressed down, the unmanned aerial vehicle ground control station receives a signal to control the unmanned aerial vehicle to stop propellers, and the motor rapidly retracts the safety rope with the safe length. The safety rope slowly lifts the unmanned aerial vehicle to a test initial position.

Description

Technical Field

[0001] The utility model relates to the field of aerial hoisting, and particularly relates to a hanging device for medium and large unmanned aerial vehicle (UAV) hoisting tests. Background Art

[0002] Traditional UAV performance testing devices are mostly used for UAV ground attitude testing. In the overall performance testing of UAVs, the driving equipment of the device has a large load, the running speed of the device is slow, the device is heavy and has a complex structure, and the flight freedom of the UAV is low. During the development stage of medium and large UAVs, in order to test and evaluate whether the flight controllability of the UAV meets the overall design requirements, UAV hoisting tests need to be carried out. During the test process, the UAV needs to be fixed and connected to a hook wire rope through a fixture and suspended. Since medium and large UAVs are heavier, fly faster and are at a higher distance from the ground, using traditional UAV testing devices will greatly limit the flight freedom of the UAV, increase the flight burden of the UAV, and cannot quickly and effectively protect the UAV and test personnel in case of emergencies. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a high-degree-of-freedom aircraft safety testing device, which reduces the load of the driving equipment, has a rapid response of the device, a simple structure, can test the flight performance of the UAV, can protect the safety of the test personnel and the aircraft when the UAV fails, and avoids economic losses.

[0004] To solve the above problems, the technical solutions adopted by the present invention are as follows:

[0005] A UAV hoisting test device includes a fixture for fixing the UAV. A fixing piece is installed above the fixture. The fixing piece is connected to the lower end of a suspension rod. The upper end of the suspension rod is connected to a safety rope. The safety rope has an insurance length. The safety rope passes through and cooperates with a pulley installed on a cross beam. The rear end of the safety rope is connected to a wire winding and unwinding wheel of a motor. The motor rotates to control the wire winding and unwinding wheel to wind and unwind the safety rope. A connecting plate is provided at the upper end of the suspension rod to connect a linear displacement sensor. The monitoring component of the linear displacement sensor monitors the speed and distance of the suspension rod rising or falling and generates a signal. The linear displacement sensor controls the motor to wind and unwind the safety rope through this signal. The length and speed of the wound and unwound safety rope are the same as the distance and speed monitored by the linear displacement sensor for the movement of the suspension rod. The UAV is not subjected to the pulling force of the safety rope during this process. The utility model is provided with an emergency button. When the emergency button is pressed, the UAV ground control station receives the signal to control the UAV to stop the propeller, and the motor quickly winds up the safety rope with the insurance length. At this time, the UAV is subjected to the pulling force of the safety rope, and the safety rope slowly lifts the UAV to the test initial position.

[0006] The beneficial effects of the present utility model are as follows: the present utility model reduces the load of the driving device, the device has a rapid response, and a simple structure. By presetting the safety length of the safety rope, the freedom degree of the drone during normal working conditions is improved. In case of an emergency, when the drone is out of control, the tester can control the ground control station of the drone by pressing the emergency button to stop the propeller of the drone, and the motor quickly retracts the safety rope with the safety length to prevent the drone from falling to the ground and protect the safety of the drone and the tester. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0008] Figure 1 Schematic diagram of the present utility model;

[0009] Figure 2 Schematic diagram of the fixture structure;

[0010] Figure 3 Enlarged view:

[0011] Figure 4 Schematic diagram of the linear displacement sensor structure:

[0012] Reference numerals in the drawings: 1-fixture, 2-hanging rod, 3-safety rope, 4-linear displacement sensor, 5-first pulley, 6-second pulley, 7-motor, 8-emergency button, 9-second signal line, 10-first signal line, 11-cross beam, 12-fixed plate, 13-winding and unwinding reel, 14-first bolt, 15-second bolt, 16-connecting plate, 17-monitoring component DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] An unmanned aerial vehicle (UAV) suspension flight test device includes a safety protection component and a power control component. The safety protection component includes a clamp 1, a suspension rod 2, a safety rope 3, a first pulley 5, a second pulley 6, and a cross beam 11. The clamp 1 is divided into upper and lower parts, and the two parts of the clamp 1 are in an arched structure. Bolt holes are provided on both sides of the clamp 1, and the upper and lower parts of the clamp 1 are fixed to the UAV fuselage through bolts 15. The clamp 1 is fixed to a fixing piece 12 welded on the suspension rod 2 through a bolt 14. The length of the suspension rod 2 is greater than the distance from the suspension rod 2 to the propeller, preventing the UAV propeller from contacting the safety rope 3. The upper end of the suspension rod 2 is connected to the safety rope 3, and the safety rope 3 is connected to a wire winding and unwinding wheel 13 on a motor 7 through the first pulley 5 and the second pulley 6 installed on the cross beam 11. The power control component includes a motor 7, a linear displacement sensor 4, an emergency button 8, a first signal line 10, and a second signal line 9. The motor 7 is controlled by the linear displacement sensor 4. The upper end of the linear displacement sensor 4 is installed on the cross beam 11, and a monitoring component 17 at the lower end of the linear displacement sensor 4 is connected to a connecting plate 16 on the suspension rod 2. The monitoring component 17 at the lower end of the linear displacement sensor 4 is a telescopic structure, and a spring is arranged inside the monitoring component 17 to freely expand and contract. The linear displacement sensor 4 monitors the moving distance and speed of the suspension rod 2 and converts them into signals, and the linear displacement sensor 4 transmits the signals to the motor 7 through the signal line 10. The motor 7 controls the rotation speed and direction of the wire winding and unwinding wheel 13 through signals. The emergency button 8 controls the UAV to stop the propeller, and the entire device enters the protection mode.

[0014] In a further technical solution, during the flight test when the UAV is working normally:

[0015] During the rising or falling process of the UAV, the UAV drives the clamp 1, the clamp 1 drives the suspension rod 2, and a connecting plate 16 on the suspension rod 2 drives the monitoring component 17 of the linear displacement sensor 4 to move. The linear displacement sensor 4 converts the moving distance and speed of the monitoring component 17 into signals to control the rotation direction and speed of the motor 7. The length of the safety rope 3 between the first pulley 5 and the upper end of the suspension rod 2 is 10 cm longer than that of the monitoring component 17 of the linear displacement sensor 4. At the connection between the safety rope 3 and the suspension rod 2, a counterweight is arranged on the safety rope 3 to keep the lower 10 cm of the safety rope 3 in a slack state, and the part of the safety rope 3 between the counterweight at the lower end of the safety rope 3 and the first pulley 5 is vertically downward. During the normal flight test, when the UAV is rising or falling, the linear displacement sensor 4 monitors the speed or distance of the suspension rod 3 moving with the UAV. The linear displacement sensor 4 transmits the monitoring signal to the motor 7 through the first signal line 10, and the signal controls the motor 7 to wind and unwind the safety rope 3. The part of the safety rope 3 with the counterweight is in a slack state during this process, and the length of the safety rope 3 is 10 cm longer than the monitoring distance of the linear displacement sensor 4. The UAV is not affected by the pulling force of the safety rope 3 during the rising or falling process of the flight, and the UAV has a high degree of freedom in the test flight.

[0016] In a further technical solution, during a flight test when an abnormal condition occurs during the operation of the unmanned aerial vehicle (UAV):

[0017] During the ascent or descent of the UAV, the UAV drives the fixture 1, the fixture 1 drives the suspension rod 2, and the suspension rod 2 drives the monitoring component 17 of the linear displacement sensor 4 to move. The movement of the monitoring component 17 of the linear displacement sensor 4 is converted into a signal to control the rotation of the motor 7. The length of the safety rope 3 between the first pulley 5 and the upper end of the suspension rod 2 is 10 cm longer than that of the monitoring component 17 of the linear displacement sensor 4. At the connection of the safety rope 3 and the suspension rod 2, a counterweight is provided on the safety rope 3 to keep the lower 10 cm of the safety rope 3 in a slack state, and the part between the counterweight at the lower end of the safety rope 3 and the first pulley 5 is vertically downward. When the UAV gets out of control, the operator presses the emergency button 8. The UAV ground control station receives the signal, controls the UAV to stop the propellers, and the second signal line 9 transmits the signal to the motor 7. The motor 7 quickly rotates to retract the safety rope by 10 cm, and the safety rope 3 pulls up the UAV to suspend the UAV in the air, realizing the protection of the tester and the UAV.

Claims

1. An unmanned aerial vehicle suspension flight test device, comprising a safety protection component and a power control component, characterized in that, The fixture is connected to a suspension rod, the suspension rod is connected to a safety rope, the safety rope is engaged with a pulley and connected to a wire winding and unwinding wheel on a motor, the motor rotates to wind and unwind the safety rope, the safety rope has a safety length, the length of the safety rope between the first pulley and the upper end of the suspension rod is 10 cm longer than the monitoring component of the linear displacement sensor, a linear displacement sensor is provided at the upper end of the suspension rod, and the device is provided with an emergency button.

2. The drone suspension flight test device according to claim 1, characterized in that The fixture is arched and divided into upper and lower parts, the fixture is bolted to the fuselage, a fixing piece is installed above the fixture, and the fixing piece is connected to the suspension rod.

3. The drone suspension flight test device according to claim 1, characterized in that, A counterweight is provided at the connection between the safety rope and the suspension rod to keep the lower end 10 cm of the safety rope in a slack state, and the part of the safety rope from the counterweight at the lower end to the first pulley is vertically downward.

4. The drone suspension flight test device according to claim 1, wherein The upper end of the linear displacement sensor is installed on a cross beam, and the lower end is connected to the suspension rod and can freely expand and contract.

5. A drone suspension flight test device according to claim 1, characterized in that The device is provided with an emergency button, and the emergency button is connected to the motor.

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