Landing retracting and releasing mechanism for small unmanned aerial vehicle

Abstract

The invention belongs to the technical field of aircraft manufacturing, and particularly relates to a landing retracting and releasing mechanism for a small unmanned aerial vehicle. A first actuating cylinder base and a second actuating cylinder base are respectively arranged on the machine body; the upper end of the first actuating cylinder is mounted on a first actuating cylinder base, a first telescopic rod is arranged on the first actuating cylinder, the upper end of the second actuating cylinder is mounted on a second actuating cylinder base, and a second telescopic rod is arranged on the second actuating cylinder; the first turntable base and the second turntable base are respectively mounted on the machine body; one side of the arresting hook rotating disc is mounted on the first rotating disc base, the other side of the arresting hook rotating disc is mounted on the second rotating disc base, a first upper connecting part and a second upper connecting part are arranged on the arresting hook rotating disc, the first upper connecting part is connected with the first telescopic rod, the second upper connecting part is connected with the second telescopic rod, and a lower connecting part is further arranged on the arresting hook rotating disc; and the arresting hook is connected with the lower connecting part of the arresting hook turntable. The arresting hook can be stably and automatically folded and unfolded.

Description

technical field [0001] The application belongs to the technical field of aircraft manufacturing, and in particular relates to a landing retractable mechanism for a small unmanned aerial vehicle. Background technique [0002] During the landing process of the taxiing take-off and landing UAV, in order to reduce the taxiing distance of the UAV, an arresting hook device is usually used to achieve a short-distance arrest, and the arresting cable is hooked when landing. There are generally two types of traditional taxiing and landing arresting hook systems: one is that the arresting hook mechanism is installed on the aircraft body and does not retract during flight and landing; the other is that the arresting hook mechanism is installed on the aircraft body and Stow up during flight and down during landing. The first type of arresting hook mechanism that is not retractable exposes the arresting hook during flight, which will lead to increased flight resistance and is not conveni...

AI Technical Summary

Problems solved by technology

In the existing arresting hook mechanism using the first method, the arresting hook will bounce after the arresting hook is in place, which has the risk of arresting failure; the arresting hook in the second method can solve the problem of the first method because the arresting position is controllable. However, the structure of the existing arresting hook in the second mode is complicated, and the single-acting cylinder of its operating mechanism cannot meet the high load bearing capacity, and its hook arm cannot rotate at the same time, so when the aircraft lands and hooks After the arresting wire, its asymmetric hook wire state will cause damage to the aircraft structure, and the system reliability is low

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