能保证货物良好完整性的机械保温车总数虽在逐年增加,但是在易腐食品运输中,冰冷保温车仍然起着巨大的作用,它运送这类货物的50%以上。对于保证货物的完整性和列车运用的可靠性所提出的严格要求,使冰冷保温车的陈旧结构有进行现代化的必要性。这项工作当车辆在厂修理时可以同时进行,在段修时也可局部进行。 Although the total number of mechanical insulated vehicles that can guarantee the good integrity of the cargoes has been increasing year by year, in the perishable food transport, the cold insulated vehicles still play a huge role in transporting over 50% of such cargoes. The stringent requirements put forward to ensure the integrity of goods and the reliability of the use of trains make it necessary to modernize the outdated structures of ice-cooled vehicles. This work can be carried out at the same time as the vehicle is being repaired in the factory. It can also be carried out locally during the repair.