Sledge and wheel integrated landing gear for unmanned aircraft

Abstract

The invention relates to a sledge and wheel integrated landing gear for an unmanned aircraft. The sledge and wheel integrated landing gear comprises a supporting arm and an aircraft wheel, wherein the upper end of the supporting arm is arranged at the bottom of the unmanned aircraft body; the aircraft wheel is arranged at the lower end of the supporting arm; a sledge is arranged between the aircraft wheel and the supporting arm; the upper end of the sledge is hinged to the lower end of the supporting arm of the landing gear; and the aircraft wheel is arranged at the lower end of the sledge. The sledge and wheel integrated landing gear is scientific in design and relatively low in cost and has a simple structure and a wide application range; due to a simple mechanical structure, the landing safety of the unmanned aircraft during landing is improved effectively, the shock absorption effect is good, and the sledge and wheel integrated landing gear is suitable for various environments with complicated terrains; the unmanned aircraft can be landed steadily in a flat flying place, a rugged land and a soft grass land, and obstacles with relatively large volumes can be kept away from the aircraft during landing; and furthermore, the sledge and wheel integrated landing gear occupies a small area and has a small volume, light mass, high reliability and long service life.

Description

technical field [0001] The invention belongs to the field of unmanned aerial vehicles, and relates to a landing mechanism, in particular to an unmanned aerial vehicle skid-wheel integrated landing gear. Background technique [0002] With the gradual maturity of unmanned aircraft technology, as well as the continuous development and improvement of UAV control equipment and UAV carrying equipment, the application field of UAV continues to expand, and it can be widely used in military reconnaissance and geographic information collection. , power line inspection, aerial high-risk operations and other fields, the use of drone inspection can greatly increase the safety factor, increase the number of patrol inspections, reduce the cost of operation management, improve the efficiency of operations, and the operation is simpler and the performance is reliable. It has better economic and social benefits. Conventional fixed-wing layout drones have high stability and can be equipped wi...

AI Technical Summary

Problems solved by technology

[0003] UAVs can take off, sail and land like ordinary aircraft under radio remote control. The current UAV landing gear is divided into prop type and rocker type. Among them, the main feature of prop type landing gear is the shock absorber and bearing The power pillars are combined into one, and the wheel is directly fixed on the piston rod of the shock absorber. The piston rod of the pillar type landing gear not only bears the axial force, but also bears the bending moment, so it is easy to wear and stagnation, so that the shock absorber The sealing performance of the gear becomes poor, and a large pressure cannot be used; the main feature of the rocker-arm landing gear is that the wheel is connected with the piston rod of the shock absorber through a rotatable rocker arm, and the shock absorber also serves as a load-bearing pillar. This type of piston only bears axial force and does not bear bending moment, but the rocker arm structure is more complicated, and the joint is stressed, so it wears a lot during use and is easy to damage

[0004] When the UAV lands, the landing gear first lands and slides for a certain distance to decelerate. During the landing and rolling process, the current two landing gears are in a state of small angle of attack, which cannot make full use of air resistance for braking, and the deceleration and sliding distance is relatively long. long

In particular, the operating environment of unmanned aerial vehicles is complex, and often needs to land in the wild natural environment. When taxiing on rough runways, the buffering and evasion capabilities when crossing obstacles such as ditches and mounds are relatively poor. Moreover, when encountering The front wheels will vibrate on bumpy roads, which will cause the UAV to bump. In order to protect the equipment and the body, it is necessary to load anti-vibration equipment on the UAV, which increases the complexity of installation and the weight of the whole machine.

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