Carrying capacity variable mill trailer device

This patent is carrying capacity variable mill trailer device, and the trailer device includes a four -bar linkage, the 2nd four -bar linkage, first member, second member, third member, fourth member,first slider, second slider, the first round, second wheel, a four -bar linkage's one end and first member swing joint, a four -bar linkage's other end third member swing joint. Beneficial effect asfollows: realized the cargo space's of trailer adjustability, adjusted to great carrying capacity mode when needing big carrying capacity, in the time of the less carrying capacity of needs, adjust tothis device the mode of the less carrying capacity of adaptation to it is current convenient. 本专利为载货量可变式工厂拖车装置，拖车装置包括第四连杆机构、第二四连杆机构、第构件、第二构件、第三构件、第四构件、第滑动件、第二滑动件、第轮、第二轮，第四连杆机构的端与第构件活动连接，第四连杆机构的另端第三构件活动连接。有益效果如下：实现了拖车的载货空间的可调性，当需要大的载货量时候调整至较大载货量模式；当需要较小的载货量的时候，将本装置调整到适应较小的载货量的模式，从而通行方便。