| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a belt which can efficiently release heat generated by friction between a center belt and blocks. <P>SOLUTION: A vent groove 31 which is extended vertically while spreading over an upper beam 21, a pillar 23 and a lower beam 22 is formed on an edge surface 20c (front surface) exposed to an air stream upon belt running on the blocks 20 where a center belt 10 is fit into a fitting groove 24. An inflow part 32 for flowing-in air into the vent groove 31 is disposed on the lower edge part of the vent groove 31 positioned on the lower beam 22. The inflow part 32 has a width wider than the center part of the vent groove 31 and the top end is closed by a wall 33. Further, on the upper edge part of the vent groove 31 positioned on the upper beam 21, an outflow part 34 for flowing-out air from the vent groove 31 is disposed. The outflow part 34 has a width wider than the center part of the vent groove 31 and the top end of the outflow part is opened in the up and the down directions. <P>COPYRIGHT: (C)2012,JPO&INPIT |
