Mine car transport coal mines, ore and waste rock and other bulk materials handling vehicles narrow gauge railway Lanzhou tub, generally required traction locomotive or winch. Harvesters basic components: the trunk with low-alloy steel plate manufacturing wagons, wear and corrosion resistance. Plate thickness mainly on account of corrosion resistance requirements. To increase the rigidity of the cabinet, often pushed out on the steel ribs, angle iron box welds. Bottom open drain. Mine car transport coal mines, ore and waste rock and other bulk materials handling vehicles narrow gauge railway tub, generally required traction locomotive or winch. Harvesters basic components: the hopper wagons tub that can be opened flat Henan tub, on both sides of the trunk ports are under the wing, supporting runtime for unloading, under the mouth should have sufficient rigidity to prevent deformation.