Transport rope system lengthening method

The invention provides a transport rope system lengthening method which comprises the following steps: when a cableway group needs to be lengthened from a high starting point to other places, the cableway group and a movable supporting unit on the cableway group penetrate through a transition seat mechanism at the high starting point, and the movable supporting unit can be butted and matched with the transition seat mechanism; therefore, the cableway group is erected on the transition supporting unit in the transition seat mechanism, the cableway group is lengthened, the movable supporting unit is redistributed and transferred, and after the cableway group is lengthened, ground fixing and supporting are added to the cableway group on the high ground in the middle, so that the structural strength and stability of the long-stroke cableway group are guaranteed, and the service life of the long-stroke cableway group is prolonged. The smooth transmission work is ensured, and the technical problems in the prior art