Tension detection device for steel wire rope of telescopic arm of overhead working truck

The utility model discloses an overhead working truck telescopic arm steel wire rope tensioning force detection device which comprises a fixing frame, the fixing frame is installed between telescopic arm frames on the two sides, a rotating shaft is installed in the middle of a balancing frame and the fixing frame, a detection plate is installed at the front end of the rotating shaft, the rotating shaft is fixedly connected with the balancing frame, and the detection plate is fixedly connected with the fixing frame. The balance frame, the rotating shaft and the detection plate can rotate together relative to the fixed frame; the two ends of the balancing frame are respectively provided with a steel wire rope used for stretching out and drawing back of the cantilever crane, and the balancing frame deflects under the pulling of the steel wire rope on one side with large tension force and drives the rotating shaft and the detection plate to deflect relative to the fixing frame at the same time. The device is prov