Construction site tower crane bolt loose detector

Abstract

The invention discloses a construction site tower crane bolt loosening detector. The detector includes a bolt head, a storage slot, a warning light and a sensor button. A bolt column is fixed at an upper end surface of the bolt head. A nut is arranged outside the bolt column in a sleeving manner. A fixing cylinder is fixed at an edge of the bolt head. A connecting rod is arranged at the top of thefixing cylinder. A fixing plate is connected with the top of the connecting rod. A through hole is opened inside the fixing plate. A groove is opened at one side of the nut. A detection shift lever is installed inside the groove. A through slot is reserved on the nut outside the detection shift lever. A sealing pad is pasted inside the through groove. The storage slot is opened at the other sideof the nut. The warning light is installed inside the storage slot. According to the construction site tower crane bolt loosening, a limit value on a rotation range of the nut exists when tower cranemoving drives the bolt column and the nut to vibrate, and phenomena of easy lighting of the warning light and increasing of work intensity of maintenance personnel can be avoided.

Description

technical field [0001] The invention relates to the technical field of bolt looseness detection, in particular to a bolt looseness detector for tower cranes on construction sites. Background technique [0002] Tower cranes are common lifting equipment on construction sites. Most of the parts are connected by bolts. In order to ensure the safety of tower cranes, it is necessary to regularly check the tightness of bolts. For example, a construction crane whose publication number is CN208716722U The heavy machinery bolt loosening automatic detection structure includes bolts, several nuts and a loosening detection mechanism. The nut thread is locked on the bolt, and the loosening detection mechanism is fastened on the nut and includes a box body, an upper cover, a wire rope, a wire rope locking screw, Tension spring, induction toggle piece and detection display circuit, the two ends of the tension spring are respectively hung on the box bracket and the induction toggle piece, on...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a construction site tower crane bolt looseness detector to solve the above-mentioned background technology. It is proposed that due to the large-scale equipment on the construction site will produce certain vibrations during operation, it will inevitably drive the slight vibration between the nut and the stud. The lack of a limit to the rotation range of the nut after vibration

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