Electromagnetic impact device used for whole machine damage test

Abstract

The invention discloses an electromagnetic impact device used for whole machine damage test, and belongs to the technical field of aircraft fatigue test. The device comprises a suction disc (1), a base assembly (2), a mechanical arm (3) and an impact gun (4). The suction disc (1) is adsorbed on the aircraft. The other end of the suction disc (1) is fixed on the base assembly (2). The base assembly(2) is connected with the impact gun (4) through the mechanical arm (3). The impact gun (4) comprises a gun body (41) and a punching head (42) arranged in the gun body (41). The punching head (42) can be driven by electromagnetism, and extends out of the gun body (41), and damage impact is carried out accordingly. The device has a reliable fixed way, high impact positioning and accurate energy control, large energy impact can be conducted, real-time impact of arbitrary angle can be conducted, repeatability is high, and meanwhile, the impact gun is provided with a reversing-prevention sensor,and an automatic secondary rebound preventing function is achieved.

Description

technical field [0001] The invention belongs to the technical field of aircraft fatigue test, and in particular relates to an electromagnetic impact device used for the damage test of the whole aircraft. Background technique [0002] With the maturity of domestic composite material technology, composite materials are improving structural efficiency and integration while reducing manufacturing and operation and maintenance costs. Composite materials have been widely used in the structural design of military and civilian aircraft due to their excellent performance. . At present, the composite material consumption of my country's C919 aircraft has reached 12%, and the future composite material consumption of wide-body passenger aircraft is planned to be even higher. It can be predicted that advanced composite materials will be widely used in the development of military and civilian aircraft models in the future. According to the requirements of the existing military aircraft s...

AI Technical Summary

Problems solved by technology

[0004] 1) When carrying out the whole machine test, due to the fixed installation attitude of the aircraft, some parts cannot be impacted with high energy by using the drop hammer impact equipment, and the existing spring gun impact equipment must be used

However, due to the power principle of the existing spring gun, it is impossible to implement a large energy impact, and cannot meet the impact requirements of the energy cut-off value required by the existing specifications;

[0005] 2) There are two types of portable impact equipment, the drop hammer impact and the spring gun, and the fixing method cannot provide sufficient support rigidity, resulting in poor stability of the equipment;

[0006] 3) The repeatability of the existing equipment is poor, and there is still a certain gap from the high-precision impact requirements;

[0007] 4) There is no device to prevent secondary rebound, mainly relying on personnel to insert the backing plate quickly after the impact to prevent secondary impact, which has certain quality and safety hazards

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