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Speed reducer for ground retrieving of small wheel type take-off and landing unmanned aircraft

A deceleration device and unmanned aerial vehicle technology, applied in the direction of parking devices, etc., can solve problems such as inconvenience and safety, and achieve the effects of low production and use costs, improved stability, and reduced withdrawal time

Active Publication Date: 2014-07-30
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical solution of the present invention is as follows: Aiming at the inconvenience and safety problems in the conventional recovery process of the above-mentioned small wheeled UAV, the present invention proposes a safe and practical deceleration recovery device

Method used

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  • Speed reducer for ground retrieving of small wheel type take-off and landing unmanned aircraft
  • Speed reducer for ground retrieving of small wheel type take-off and landing unmanned aircraft
  • Speed reducer for ground retrieving of small wheel type take-off and landing unmanned aircraft

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specific example

[0050] The usage mode of device among the present invention is described below by two examples:

example 1

[0051] Example 1: Short-distance recovery of small UAVs in a narrow space

[0052] Small UAVs generally do not choose regular airports for downhilling, and it is difficult to choose a suitable site due to the complexity of the work site. When in the wild environment, it is necessary to find an open area, but its length does not meet the distance for normal downhill automatic deceleration and parking. By deploying the deceleration device of the present invention about 30 meters in front of the landing point, the blocking force is set in advance to ensure safety, and after the UAV lands, it slides and hits the deceleration rope, and the rope is dragged by the front landing gear to continue moving forward, during which the deceleration The device provides gradually increasing resistance for the UAV to decelerate and stop, greatly reducing the deceleration and sliding distance, and stopping the UAV within a limited distance.

example 2

[0053] Example 2, low-friction smooth runway short-distance recovery

[0054] When a small drone lands on a low-friction surface such as an asphalt road, the deceleration distance will be too long. For example, when the grounding speed reaches 30m / s, the UAV needs a distance greater than 400m to completely stop, and the effective operating radius of the remote control after the UAV lands is about 250m. When this distance is exceeded, it will be affected by ground diffraction. The remote control signal is lost, and the UAV is uncontrollable, so that the UAV is in danger of rushing out of the runway. By deploying the deceleration device of the present invention, the speed of the UAV can be quickly reduced, so that the UAV can stop within the effective control radius and ensure the safety of the UAV.

[0055]

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Abstract

The invention relates to a speed reducer for ground retrieving of a small wheel type take-off and landing unmanned aircraft. The speed reducer is used for shortening the distance of landing run of a small wheel type horizontal take-off and landing unmanned aircraft so as to realize short-distance retrieving of the unmanned aircraft. According to the speed reducer, the speed reducing and retrieving of the unmanned aircraft are realized by using the self weight of a rope to increase damping step by step. The speed reducer disclosed by the invention comprises a base, a bearing assembly, a main box body, a rope box, two pulley blocks, a photoelectric sensor, a data display screen and a rope, wherein the main box body is connected with the base through the bearing assembly, and the bearing assembly can ensure that the main box body can rotate by 360 degrees; the rope box is mounted on one side of the main box body, and is used for winding and placing the rope and setting the initial resistance value for dragging and dropping of the rope; the two pulley blocks are mounted at the upper part of the main box body, and are used for guiding the rope; the photoelectric sensor is mounted on one side of the pulley block at a rope outlet, and is used for measuring the rotating cycles of pulleys; the data display screen is mounted on the side wall of the main box body, and is used for displaying the length of the dragged part of the rope.

Description

technical field [0001] The invention relates to a ground recovery deceleration device for a small unmanned aerial vehicle, which belongs to the field of auxiliary ground equipment design for aviation aircraft. Background technique [0002] A drone is a powered aircraft with no pilot on board. UAVs are inexpensive to develop and use, and eliminate the consideration of the driver's physiological restrictions when used. They can perform many tasks that man-machines cannot perform, and have a wide range of applications. [0003] In the process of using drones, recycling is an important link, and it is also a link that is prone to safety accidents of drones. Therefore, in the recycling stage of drones, it is necessary to ensure the safety of the aircraft and meet the requirements of recycling Indicator requirements. [0004] Small wheeled take-off and landing UAVs can be flexibly used in various environments and venues, and a series of use links such as deployment, operation, a...

Claims

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Application Information

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IPC IPC(8): B64F1/02
Inventor 兰文博王伟魏城龙金延伟
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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