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为方便敞车的卸货,我国国产通用敞车在每一侧墙上均设有6扇上开式的下侧门。下侧门由门板和折页等组成。折页中部焊接有下侧门吊钩挂环,卸货时将下侧门向上翻起后,上侧梁上的下侧门吊钩将下侧门吊挂起来。长期以来,下侧门吊钩挂环丢失的情况屡屡发生,有必要对此问题进行分析并?
In order to facilitate the unloading of gondola vehicles, China’s domestic general-purpose gondola cars are equipped with 6 lower side doors on each side wall. The lower door by the door and folding and other components. The lower part of the hinges is welded with a hanging ring of the lower side door hanger. When the lower side door is unfolded upwards, the lower side door hanger on the upper side hanger hangs the lower side door. For a long time, the lower door hook hanging ring loss occurs frequently, it is necessary to analyze this problem and?