Support a in the agricultural job winch - mu

摘要

PURPOSE:To obtain the subject supporting arm capable of readily moving an agricultural working machine in a vertical direction by supporting a supporting stage of an agricultural working machine at a top end of a link installed on a working truck in freely rotatable in a vertical direction in freely movable in a parallel direction and connecting links and an adjusting lever with a spring over the stage. CONSTITUTION:The subject supporting arm is installed in an agricultural working truck supportable an agricultural working machine performing agricultural works such as sowing, transplanting or soil sterilization with vertically moving with hand operation in freely movable in vertical direction. In said supporting arm, a supporting stage 7 freely capable of hooking the agricultural working machine is supported at a top end of a pair of links 6 installed in the working truck 1 in freely rotatable in a vertical direction in freely movable in parallel direction and a spring 8 for forcing the supporting arm 5 to upward is expanded between two links 6 located in upper and under, then an end of the spring 8 is fixed on one of the links 6, thus the other end of the spring is connected to an adjusting lever 9 installed in the other link 6 to make possible to freely adjust tension.