Tramcar narrow-gauge railway transport vehicle mines transport coal, ore and waste rock and other bulk materials, are generally required traction locomotive or winch. Harvesters basic components: the hopper wagons tub that can be opened flat Gansu stationary tub, both sides of the lower trunk ports are fixed wing tub, support for unloading when running under the mouth should be sufficient rigidity to prevent deformation. Mine car transport coal mines, ore and waste rock and other bulk materials handling vehicles narrow gauge railway Hebei stationary tub, generally required traction locomotive or winch. Coal narrow gauge mine car safety determination and decision rules: tub chassis rack must not deform Inner Mongolia stationary tub, riveting rivets not loose, but can not fall off, stop using it immediately shaped channel such as severe corrosion, for scrap processing .