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A platform for research: civil engineering, architecture and urbanism
Bolt capable of automatically warning invalidation of rail transit fastener
The invention relates to a bolt capable of automatically warning invalidation of a rail transit fastener. The bolt capable of automatically warning the invalidation of the rail transit fastener comprises a washer (3), a screw head (1) or a screw cap (2) which is matched with the washer and a screw connected with the screw head (1) or the screw cap (2), a fastener invalidation warning circuit is arranged in the screw head (1) or the screw cap (2) and comprises a battery, a normally closed switch and LED lamps, the LED lamps are exposed outside the surface of the screw head (1) or the surface of the screw cap (2), and the battery, the normally closed switch and the LED lamps are sequentially connected with each other into the circuit through wires; when the screw head (1) or the screw cap (2) is screwed down and fully makes contact with the washer (3), the normally closed switch is closed, the circuit is an open circuit; when the the screw head (1) or the screw cap (2) is loosened and fully or partially breaks away from the washer (3), the normally closed switch is opened, the circuit is a closed circuit, and the LED lamps are lightened. Compared with the prior art, the bolt capable of automatically warning the invalidation of the rail transit fastener has the advantages of being low in manufacture cost, convenient to use, capable of achieving automatic warning and the like.
Bolt capable of automatically warning invalidation of rail transit fastener
The invention relates to a bolt capable of automatically warning invalidation of a rail transit fastener. The bolt capable of automatically warning the invalidation of the rail transit fastener comprises a washer (3), a screw head (1) or a screw cap (2) which is matched with the washer and a screw connected with the screw head (1) or the screw cap (2), a fastener invalidation warning circuit is arranged in the screw head (1) or the screw cap (2) and comprises a battery, a normally closed switch and LED lamps, the LED lamps are exposed outside the surface of the screw head (1) or the surface of the screw cap (2), and the battery, the normally closed switch and the LED lamps are sequentially connected with each other into the circuit through wires; when the screw head (1) or the screw cap (2) is screwed down and fully makes contact with the washer (3), the normally closed switch is closed, the circuit is an open circuit; when the the screw head (1) or the screw cap (2) is loosened and fully or partially breaks away from the washer (3), the normally closed switch is opened, the circuit is a closed circuit, and the LED lamps are lightened. Compared with the prior art, the bolt capable of automatically warning the invalidation of the rail transit fastener has the advantages of being low in manufacture cost, convenient to use, capable of achieving automatic warning and the like.
Bolt capable of automatically warning invalidation of rail transit fastener
ZHOU YU (author) / YU MIAO (author) / JIANG JUNNAN (author) / ZHANG JIE (author) / YANG XINWEN (author)
2015-09-30
Patent
Electronic Resource
English
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