Arresting hook retracting and releasing mechanism

Abstract

The invention relates to an arresting hook retracting and releasing mechanism, belonging to the technical field of aircraft manufacturing. The arresting hook retracting and releasing mechanism comprises a connecting rod I, an upper joint, a fixed rotating shaft I, a rotating shaft support, a fixed rotating shaft II, an actuator cylinder, an expansion link, a connecting rod II, a connecting rod III, a fixed rotating shaft III, a connecting rod IV, an aircraft body surface, an arresting hook and a fixed rotating shaft IV; a transmission mechanism can enable the arresting hook to be released and retracted stably, the mechanism is reliable, and the actuator cylinder can realize long force arm by a short actuating distance; in addition, when the arresting hook is released to a working position, the connecting rod I 2-1.1, the connecting rod II 2-6, the connecting rod III 2-7 and a shipboard aircraft fixed structure form a triangular force-bearing structure, pulling force generated by arresting during aircraft landing is directly dispersed to an aircraft body structure by a connecting rod mechanism, and therefore, the strength requirement on the actuator cylinder can be reduced.

Description

technical field [0001] The invention relates to an arresting hook retractable mechanism, which belongs to the technical field of aircraft manufacturing. Background technique [0002] In order to reduce the landing (ship) roll distance of the aircraft, the aircraft can use the arresting hook device to achieve short-distance arrest, and hook the arresting wire when landing (ship). The traditional arresting hook system usually consists of a fixed rotating shaft support, a fixed rotating shaft, an actuator, a telescopic rod, an arresting hook joint, an arresting hook, and a fixed rotating shaft. Its hydraulic actuating mechanism directly pushes and pulls the arresting hook to rotate around the fixed rotating shaft to control There are two types of actuators, horizontal and vertical, when stowed and put down. Since the power of the actuator is inversely proportional to the transmission arm and telescopic length, the weight of the actuator is directly proportional to the power and...

AI Technical Summary

Problems solved by technology

The traditional arresting hook system usually consists of a fixed rotating shaft support, a fixed rotating shaft, an actuator, a telescopic rod, an arresting hook joint, an arresting hook, and a fixed rotating shaft. Its hydraulic actuating mechanism directly pushes and pulls the arresting hook to rotate around the fixed rotating shaft to control There are two types of actuators, horizontal and vertical, when stowed and put down. Since the power of the actuator is inversely proportional to the transmission arm and telescopic length, the weight of the actuator is directly proportional to the power and telescopic length, so it is difficult to reduce the actuation. Weight of barrel and telescoping rod

When the arresting hook hooks the arresting cable on the landing runway, a large impact load will be generated, which will be directly transmitted to the hydraulic actuator, which requires the actuator to have a large load-bearing capacity. Usually, high-strength steel is used and the wall of the actuator is used. Thicker, heavy structural weight

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