Tank truck

Disclosed is a tank truck, comprising: a bogie (3); a storage tank (5); a pipeline safety system (7) connected to the storage tank; a traction bolster device (4) disposed on the bogie and comprising two traction bolsters respectively fixed to two ends of the storage tank, each of the traction bolsters comprising a traction beam, a crossbeam, a bolster beam, an end beam and a side beam; and a braking device (6, 2) disposed on the bogie and fixed to the traction bolster device and the storage tank. The crossbeam, the bolster beam and the end beam are fixed in parallel onto the traction beam; one end of the side beam is fixed to the end beam, and the other end thereof is fixed to the bolster beam; and the end of the storage tank is supported on the bolster beam and the crossbeam. The storage tank comprises a cylinder, an inner container disposed inside the cylinder, a thermal insulation layer disposed between the inner container and the cylinder, and a supporting device. With the tank truck, refrigerated liquefied natural gas can be transported through a railway, thereby reducing the transportation cost of the refrigerated liquefied natural gas and achieving long-distance transportation and high safety.