| 摘要 |
In a continuous unloader, in which an endless bucket conveyor is passed around an upper sprocket, a base sprocket therebelow and a distal sprocket in front of the upper sprocket, the base sprocket and the distal sprocket are connected to a lower end of a frame which supports the upper sprocket via a link mechanism which lowers the base socket and the distal socket when approaching each other and raises them when separating from each other. The common link mechanism causes the base sprocket and the distal sprocket to move toward and away from each other and ascend and descend, so that the continuous unloader is made simple in construction and small in weight. Also, complicated control is not necessary and a manufacturing cost is made low. The link mechanism may comprise a main link connected at one end thereof to the lower end of the frame and at the other end thereof to the distal sprocket, a auxiliary link connected at one end thereof to an intermediate point of the main link and at the other end thereof to the base sprocket, and a stay link connected at one end thereof to an intermediate point of the auxiliary link and at the other end thereof to the lower end of the frame. Such link mechanism enables the base sprocket and the distal sprocket to move toward and away from each other and to ascend and descend. <IMAGE> |
