| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent rattling of a block when a belt travels and to prevent heat from being generated locally in a lower tooth part of a center belt. <P>SOLUTION: On an outer circumferential surface of a center belt 2, upper tooth parts 6 is provided that protrude in a tooth shape into a gap between upper beam parts 11 of each block 10. The upper tooth parts 6 are brought into contact with the upper beam parts 11 on both sides of the gap, to prevent rattling of the block 10 when the belt travels, and to prevent a reduction in durable life of the center belt due to frictional wear with the block 10 in a fitting portion, abnormal noise, and skew of the block 10 in the lengthwise direction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
