SAFETY DEVICE FOR MEASURING THE LOAD OF A CONVEYING CAR FOR A LADDER TRUCK, CAPABLE OF PREVENTING SAFETY ACCIDENTS DUE TO THE EXCESSIVE LOAD OF THE CONVEYING CAR

摘要

PURPOSE: A safety device for measuring the load of a conveying car for a ladder truck is provided to automatically change the moving speed of the conveying car or to make the ongoing conveying car stop by detecting analyzing the load of the conveying car.;CONSTITUTION: A safety device for measuring the load of a conveying car for a ladder truck comprises a boom winch member(11), a conveying car winch unit and a hydraulic driver(5). The boom winch unit draws out a multi-stage boom(21) comprising a boom stand. The conveying car winch member comprises a conveying car winch unit(31), an elevation pulley(32) and an elevation wire(39). The conveying car winch unit is installed in the lowest bottom boom. The elevation pulley is installed in the front of the top boom. The elevation wire is wound in the conveying car winch unit and is rolled with the elevation pulley. The elevation pulley is composed of an axial-type load cell(34) and an intermediate pulley(35). The intermediate pulley is installed in the axial-type load cell to be rotated through a bearing(36). The elevation wire is rolled in the intermediate pulley and delivers the load of the conveying car to the axial-type load cell.;COPYRIGHT KIPO 2011