Photoelectric protection device used in the strength test of the movable rudder surface of aircraft structure

Abstract

The invention belongs to airplane structure movable control surface strength test protection technologies, and particularly relates to a photoelectric protection device for a strength test for a movable control surface of an airplane structure. A transmitting terminal and a receiving terminal of the photoelectric protection device for the strength test for the movable control surface of the airplane structure are installed at monitoring parts of a following loading device respectively, wherein the transmitting terminal is provided with an infrared light-emitting diode, the receiving terminal is provided with a light-operated triode corresponding to the light-emitting diode, the receiving terminal is connected with a relay in series, a normally-open contact of the relay is connected to the input end of a multi-channel fault detector, and the output end of the fault detector is connected to an Aero ST coordinated loading control system. The photoelectric protection device provided by the invention is convenient to install, and can be matched with the multi-channel fault detector in use; a problem of test piece protection in following loading of the airplane movable control surface can be solved; the protection area is wide, the response speed is high, protection is carried out immediately when an optical path is blocked, the performance is stable and reliable, and the test is ensured to be carried out smoothly.

Description

technical field [0001] The invention belongs to the protection technology of the strength test of the movable rudder surface of the aircraft structure, and in particular relates to a photoelectric protection device used for the strength test of the movable rudder surface of the aircraft structure. Background technique [0002] Usually, the static force and fatigue tests of the aircraft rudder surface are loaded statically, and there is no need to consider the problem of dynamic loading, and the protection device can be realized by using a limit switch. However, when the movable rudder surface of the aircraft structure is loaded with follow-up, the loading device moves with the rotation of the aircraft rudder surface. Realize protection with limit switch, just seem powerless. In order to prevent damage to the test piece caused by the collision of the movable rudder surface and the follow-up loading device due to unexpected circumstances during the test (such as the loading d...

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Problems solved by technology

[0003] Purpose of the present invention: the present invention provides a kind of photoelectric protection device that is used for the intensity test of aircraft structure movable rudder surface, to solve the problem of destruction of the test piece caused by the collision between the loading device and the rudder surface under abnormal conditions in the follow-up loading of the aircraft movable rudder surface

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