The body of the ladle car is mainly composed of two longitudinal beams and four transverse beams. The longitudinal beams and transverse beams are box structures, which mainly ensure the strength and stiffness of the frame. It is between the two beams of the running rotating device, and a heat insulation layer and a protective cover are set around the transmission device, which effectively avoids the heat radiation of molten steel and steel slag and greatly improves the service life of the transmission device.