Small unmanned plane undercarriage buffer

Abstract

A small unmanned plane undercarriage buffer relates to the field of aviation aircrafts and solves problems of low buffering efficiency, easy bounce, low reliability of a present flat spring type buffer. The small unmanned plane undercarriage buffer comprises an external cylinder, a first spring on the external cylinder, an internal cylinder having a damping hole, an air sac between the external cylinder and the internal cylinder; an upper joint, a lower joint, a piston rod extending into the internal cylinder, a piston, a damping plate, a pressure-limiting valve, a check valve, a guide sleeve and a locking cover, wherein the piston rod is orderly covered with the piston, the damping plate and the pressure-limiting plate; the piston rod is orderly covered with the check valve, the guide sleeve and the locking cover; the check valve, the guide sleeve and the locking cover are all disposed in the external cylinder; an internal-external cylinder annular oil storage cavity is formed between the internal cylinder and the external cylinder; the damping plate axially moves along the piston rod; the pressure-limiting plate limits maximum damping force to a preset valve during compression stroke; after the locking cover is tightly screwed, the guide sleeve, the check valve and the internal cylinder are axially pressed to the lower joint; the check valve controls communication between the internal-external cylinder annular oil storage cavity and a right cavity of the internal cylinder; and two ends of a first spring are respectively pressed against the upper and lower joints. The small unmanned plane undercarriage buffer possesses high buffering efficiency, uneasy bounce, stable performance and great reliability.

Description

technical field [0001] The invention relates to the technical field of aviation aircraft, in particular to a small unmanned aerial vehicle landing gear buffer. Background technique [0002] The landing gear is a special device used for taxiing and parking of the aircraft. It needs to bear the static load and dynamic load generated by the contact between the aircraft and the ground, and plays the role of supporting and protecting the airframe. The landing gear relies on the buffer to absorb the landing impact energy, and its performance has a decisive impact on the take-off and landing performance of the aircraft. With the popularity of drones, users often do not have professional aircraft knowledge, which puts forward higher requirements for the reliability, ease of operation, and maintenance-free nature of drones. With the continuous expansion of UAV application fields and the ever-changing market demand, this puts forward requirements for UAV development cycle and cost pe...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing flat spring buffer has low buffering efficiency, easy to rebound, and cannot meet the high reliability requirements of the UAV, the present invention provides a small unmanned vehicle with high buffering efficiency, not easy to rebound, stable performance, and high reliability. Aircraft landing gear buffer

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