The towed road sweeper is based on the BJ130 light truck chassis and is connected to the towing vehicle by a full trailer.The towed wheel is the power source.In this paper,taking the spiral blade shaft of the main mechanism of the collecting device as the research object,and the finite element analysis is carried out by ANSYS software to study the damage effect of different central shaft diameters and spiral blade axes of different materials in the extrusion of branches and other sizes of garbage.And the stress distribution and deformation of the spiral blade axis provide a...