棚车在货车总数中占相当大的比例,是用于大批运送货物尤其是贵重货物的主型货车之一。棚车大约运送95％的工业品和54％以上的食品。因此提高棚车利用效率问题具有特别的现实意义。同时,提高棚车的可靠性并在此基础上缩短各种停留时间具有很大的潜力。此外,棚车技术状态的改善,将提高货物运输的完好性,加快货物的运送速度。车辆工作者在提高棚车可靠性和改进其结构方面做了大量工作。例如,阿尔泰车辆工厂制造的车体容积为120米~3的棚车,1962至1969年期间,为把载重提高到62吨,加 Box cars make up a significant proportion of the total number of trucks and are one of the main trucks used to ship large quantities of goods, especially valuable goods. The box car delivers about 95% of industrial products and 54% of food. Therefore, improving the efficiency of the box car has a special practical significance. At the same time, there is great potential for increasing the reliability of box cars and for shortening the various dwellings on this basis. In addition, the improvement of the technical status of the box car will improve the integrity of the transport of goods and speed up the delivery of goods. Vehicle workers have done a great deal of work to improve the reliability of their car and improve its structure. For example, Altay car factory car body volume of 120 m ~ 3 box car, from 1962 to 1969 period, in order to increase the load to 62 tons, plus