Apparatus and method for detecting loosening of carrying dolly chain lifting chain

Abstract

The invention discloses an apparatus and a method for detecting loosening of a carrying dolly chain lifting chain, the detection apparatus comprises a support, a pedestal is provided on the top of the support; a travel switch is provided on the end face of the pedestal; a tension wheel engaged with the lifting chain is provided at the lower part of the pedestal bottom, the tension wheel is arranged at the lower part of the pedestal through a tension wheel support; the one end of the tension wheel support is connected with the tension wheel, the other end of the tension wheel support is threaded out of the end face of the pedestal; a signal rod which is used for triggering the travel switch and is contacted with the travel switch is provided on one end threaded out of the tension wheel support; a compression spring is provided between one end of the tension wheel support which is connected to the tension wheel and the pedestal bottom; The detection method of the loosening of carrying dolly chain lifting chain is realized by using the apparatus for detecting the loosening of the carrying dolly chain lifting chain. The real time detection of an operation state of the carrying dolly lifting chain can ensure the stability, reliability and security of the production process.

Description

technical field [0001] The invention relates to the detection field of handling trolley equipment used in the welding workshop, painting workshop and assembly workshop of an automobile factory for lifting and transferring body parts between different stations, in particular to a detection device for lifting and lowering chains of a handling trolley and its detection method. Background technique [0002] Handling trolleys are mainly used in machinery, metallurgy, chemical industry, building materials, power, light industry, mining and home appliance manufacturing industries, especially in the vehicle manufacturing workshops of automobile factories. Let’s take the body-in-white transfer station of the welding workshop as an example to illustrate: After the lower assembly of the body-in-white, left / right side enclosure assembly and other components are welded at the sub-assembly station, the lifting and hoisting of the chain is driven by the transport trolley. Tightening and l...

AI Technical Summary

Problems solved by technology

Due to its own structural reasons, the lifting chain mechanism of the handling trolley generally has faults and defects during long-term use: when the chain is descending, when the spreader stops due to the balancer being stuck or other reasons, the drive reducer Drive the chain to continue to descend, causing the chain to eventually accumulate and fall off from the sprocket, and in severe cases, it will be stuck or broken; because the trolley adopts the automatic operation mode, it is often found only after the fault is shut down

[0004] To sum up, when the lifting chain type handling trolley transports car body parts, there are hidden dangers of the lifting chain sagging from the sprocket, falling off or even getting stuck, and it is impossible to rely on continuous inspection by people to find out the working status of the chain; Timely detection of serious equipment failures will not only affect the continuity of the production process, but also cause potential safety accidents. Therefore, there is an urgent need for a fault detection and early warning system that can effectively prevent the chain from loosening, jamming, and chain loss.

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