Opening and closing device of discharge door of railway wagon, railway wagon and ground unloading device

摘要

English Translation of PCT/CN2014/081108 An opening and closing device of a discharge door of a railway wagon, a railway wagon and a ground unloading device are provided according to the present application. The opening and closing device includes a four-bar mechanism, and the four-bar mechanism includes a 5 rotating shaft provided on a bottom surface of a vehicle body transversely, one end of the rotating shaft is fixedly provided with a first door opening arm configured to drive the rotating shaft to rotate in a first direction, and another end of the rotating shaft is fixedly provided with a second door opening arm configured to drive the rotating shaft to rotate in the first direction and a second door closing arm configured to drive the rotating shaft to rotate in 10 a direction opposite to the first direction. A straight line, where tail ends of the first door opening arm and the second door opening arm are located, is in parallel with the rotating shaft, and the second door closing arm transversely extends beyond an outer side of the second door opening arm and is spaced from the second door opening arm by a first interval. - 12 -