Patent ID: 9061688
Filing Date: 2015-06-23
Classification: B61D

Abstract:
1. A bottom door device, comprising a first bottom door and a second bottom door, the first bottom door comprising a first door end plate and a first bottom door plate which are fixedly connected, the second bottom door comprising a second door end plate and a second bottom door plate which are fixedly connected, wherein a labyrinth seal is formed between the first bottom door plate and the second bottom door plate; wherein a first bending portion is provided at an end portion of the first bottom door plate, a second bending portion is provided at an end portion of the second bottom door plate, and a labyrinth seal is formed between the first bending portion and the second bending portion; an elastic member is mounted at an end portion of the second bending portion, and when the bottom door device is in a closed state, the elastic member abuts against the first bending portion; a supporting member which is fixedly arranged on the second bending portion of the second door plate for fixing the elastic member on the second bending portion; and the supporting member comprises a connecting plate and a sealing plate which are arranged vertically to each other, and the connecting plate is fixedly connected to the second bending portion.