| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball storage tank which is composed by connecting a plurality of gutter members continuing the inclination of the bottom surface, in which ball clogging hardly occurs at a connection part. SOLUTION: The ball storage tank (lower tank 31) configured by connecting the plurality of gutter members 40a, 40b and 40c provided with an inclined bottom part 43 inclined along an standing wall between a pair of standing walls 41 and 42 so as to continue the inclined bottom parts is provided with a disposed member 90 disposed between the pair of standing walls in the state of forming an interval above the inclined bottom part and a gutter (inclined gutter 81) mounted on the disposed member in the state of being over the plurality of gutter members. The downstream end of the inclined bottom part of an upstream side gutter member in the boundary level difference 43a of the gutter members adjacent to each other is arranged at a position higher than the upstream end of the inclined bottom part of a downstream side gutter member, and the disposed member 90 is provided on a position shifted by a distance L1 (L1>0) from the connection part of the gutter members adjacent to each other to the downstream side in the inclination direction of the inclined bottom part. COPYRIGHT: (C)2009,JPO&INPIT
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