Safety belt locking test device
A technology for testing device and seat belt lock, which is applied in the direction of measuring device, testing of mechanical components, testing of machine/structural components, etc., can solve the problems of complex overall structure, high cost, and high requirements on test personnel's operating ability, and achieve simple operation. The effect of fast, lower detection cost, and improved detection efficiency
Active Publication Date: 2018-01-30
山东翔宇航空技术服务有限责任公司
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Problems solved by technology
[0003] Consult the published literature on the seat belt lock test bench. The output of the test acceleration is realized by a stepping motor controlled by a computer. Therefore, the overall structure is complex, the cost is high, and the operating ability of the test personnel is high.
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[0016] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.
[0017] The test principle analysis is as follows:
[0018] 1. Test parameter requirements
[0019] According to the requirements of the CMM manual, the seat belt in the aircraft seat restraint system is in a locked state at an acceleration of 1.5g, and is in a stretchable state at an acceleration of 0.75g.
[0020] 2. Acceleration output scheme
[0021] According to the test requirements, when the acceleration output by the acceleration generating device reaches 1.5g, the seat belt should be locked immediately, and the seat belt can still be stretched under the acceleration of 0.75g, so the device should output a stable acceleration of 1.5g and 0.75g .
[0022] On the earth, specific to each region, the local gravitational acceleration g is very stable. If gravity is used as the power source, the stability of the power can be significa...
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A safety belt locking test device comprises a fixed frame and a movable frame. The Emergency Locking retractor (ELR) of a safety belt is connected with the movable frame. The test device further comprises a weight, wherein one end of a hanging rope is connected with the weight and the other end of the hanging rope is connected with a driving rope sheave; a transmission shaft provided with a gear;a rocking crank connected to the transmission shaft; a handle hinged to the fixed frame and equipped with teeth meshed with the gear; and a stay rope having one end connected with the rope sheave andother end connected with a safety belt hook. The safety belt locking test device generates acceleration mainly by using a gravity-driven approach in order to detect the locking performance of the safety belt, eliminates a variety of intermediate transmission mechanisms and electronic sensors compared with a conventional test bench, is simple and quick in operation, stable in output acceleration, improved in detection efficiency, reduced in test cost, and is increased by over 40% in test efficiency than a conventional test device.
Description
technical field [0001] The invention relates to the technical field of safety belt testing, in particular to a safety belt locking testing device. Background technique [0002] The seat belt of an airplane or car is an important part of the passenger restraint system, which is of great significance to the realization of passenger safety. The detection and maintenance of the seat belt is an important means to ensure the effectiveness of the restraint system. In the prior art, an important item in the seat belt detection is the locking performance detection of the seat belt, which means that when the acceleration of the passenger relative to the seat reaches a certain critical value (such as 1.5g), the seat belt will be locked immediately to restrain the passenger on the seat to ensure the safety of the passenger. [0003] According to the published literature on the seat belt lock test bench, the output of the test acceleration is realized by a computer-controlled stepping m...
Claims
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Inventor 姚光生滕朝阳邓广涛胡慧琴张志龙孙振帅王新坤
Owner 山东翔宇航空技术服务有限责任公司