Bolt fracture early warning device

Abstract

The invention discloses a bolt fracture early warning device which comprises at least two threaded caps, two signal detection lines movably extending into the same threaded cap are movably connected through connecting pieces, an alarm circuit is formed among the multiple threaded caps through the signal detection lines, an alarm is arranged on the alarm circuit, the connecting pieces are fixedly connected with supporting pieces, a push plate is sequentially provided with a baffle and an elastic extrusion column in the direction close to a bolt, and the push plate is fixedly connected with a trigger rod movably penetrating through the baffle. In the use process, the alarm is triggered to work through connection or separation of the connecting pieces, in addition, through cooperation of the trigger rod, the baffle and the elastic extrusion column, when the bolt expands to a potential safety hazard set value due to expansion cracking, the connecting pieces are separated to enable the alarm circuit to be disconnected to give an alarm, and through cooperation of an opening plate, a fixing plate, a pull rope and a piston assembly, when the control circuit gives an alarm, marking paint flows out and is dip-dyed on the threaded caps.

Description

technical field [0001] The invention relates to the technical field of bolt fracture alarms, in particular to a bolt fracture early warning device. Background technique [0002] Bolts are prone to breakage when subjected to a large shear force. If the broken bolts are not replaced in time, it will cause great safety hazards to the operation of the device, and even cause the device to fall apart and cause production accidents, resulting in huge personal accidents and property loss. [0003] In the prior art, the application number is "201721576233.1", which is a bolt for railway vehicles with the functions of breaking loose alarm and preventing falling off and flying out. A safety line is set in the hollow bolt, and an alarm signal generator is set on the top of the hollow bolt. When the hollow bolt breaks, the safety wire stretches straight to trigger the alarm signal generator. At the same time, the safety wire and the alarm signal generator block the broken hollow bolt to...

AI Technical Summary

Problems solved by technology

[0004] However, there are still relatively large defects in the prior art, such as: 1. The bolt needs to have a larger shear resistance performance, and the above-mentioned technology provides a cavity inside the bolt, so that the shear resistance performance of the bolt is greatly reduced, resulting in the use of the bolt. The service life is greatly reduced, and the potential possibility of bolt fracture is increased; 2. When the bolt expands and cracks, but it is not completely broken, the performance of the bolt is greatly reduced, and it is easy to break, which has a large safety hazard. The advanced alarm signal generator cannot detect the expansion and cracking of the bolts, and the alarm can only be triggered after the bolts are broken. There is a certain hysteresis, and it is impossible to detect bolts with potential safety hazards in advance.

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