| 摘要 |
In the present invention, each of belt reversing mechanisms configured to reverse a belt at an upstream portion and a downstream portion of a return belt of a belt conveyor, includes two sets of pinch rollers which are provided so as to be spaced apart from each other in a belt movement direction and configured to support the belt, and two sets of guide roller mechanisms which are provided so as to be spaced apart from each other in the belt movement direction and are configured to guide the belt in a tubular shape from outside between the pinch rollers such that the belt is reversed 180 degrees and twisted to cause a center portion of a span between the pinch rollers so as to form a tubular open cross-section with a dirty surface facing inward; and the belt between the two sets of pinch rollers forms a catenary curve or a curve close to the catenary curve. |
