| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a fall of a belt from a conveying roller to the outside of a frame of a conveyor when the belt is not loaded with a conveyed material without blocking the conveyed material in conveyance by a belt conveyor. <P>SOLUTION: A presser roller 11 capable of rotating in the conveying direction of the belt conveyor 1 and having a length in the rotary shaft direction over the cross direction of the belt conveyor 1 is provided above the belt 6 on a conveying side of the belt conveyor 1 freely to change the position in the height direction. In conveyance, the presser roller 11 is retreated upward, and when the belt conveyor is not loaded with the conveyed material, the presser roller 11 lowers the floating belt 6 to a position just over the conveying roller 7 to prevent the floating of the belt 6. <P>COPYRIGHT: (C)2012,JPO&INPIT |
