Helicopter undercarriage loading device

Abstract

The invention belongs to the technical field of helicopter body part static tests, and particularly relates to a helicopter undercarriage loading device. The device comprises a long lever assembly (1), a connecting steel cable (2), a short lever assembly (4), a first adapter (5), a second adapter (6) and an airplane wheel supporting assembly (7). According to the device, upward loading is realizedby adopting the airplane wheel false part and the three-stage combined lever according to the stress requirement during test, and the airplane wheel false part is consistent with the real part in size and tolerance, so that the stress state is truly reflected during loading stress. The airplane wheel false part and the lever system are designed, so that the undercarriage in the middle of the airplane body is prevented from interfering with the airplane body when being pulled to a load by the actuator, the installation is convenient, and the loading is stable. The device is stable in structure, reliable in performance and capable of well meeting test requirements.

Description

technical field [0001] The invention belongs to the technical field of static force testing of helicopter body components, and in particular relates to a loading device for a helicopter landing gear. Background technique [0002] Helicopter landing gear is one of the most important parts of the airframe structure, and its on-board connection test is an essential part of the helicopter design process. And when the landing gear is in the middle position of the fuselage, it becomes not so easy to load upwards. [0003] In the past, when this type of test was carried out, it was possible to design a special bench and install the steering pulley by turning the load, but it was often limited by the space, and the design effect was not ideal; it was also possible to directly design a fixed bench and install the actuator to apply the compressive load. This brings about complex structure of the bench and easy instability when the actuator applies a compressive load. [0004] The ke...

AI Technical Summary

Problems solved by technology

When the landing gear is in the middle of the fuselage, it is not easy to load upwards

[0003] In the past, when this type of test was carried out, it was possible to design a special bench and install the steering pulley by turning the load, but it was often limited by the space, and the design effect was not ideal; it was also possible to directly design a fixed bench and install the actuator to apply the compressive load. This brings about the complex structure of the bench and the pressure load applied by the actuator is prone to instability.

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