| 摘要 |
PURPOSE:To facilitate the attachment of support members arranged at positions opposing L-like attaching sections at the inside of a chain, and to prevent granular materials from spilling, by connecting coupling members to the support members so that large holes in the upper sections thereof and small holes in the lower sections thereof are blocked. CONSTITUTION:A screw hole 19 in an L-like shape attaching section 12 which extends downward from each of chains 8, 8 is opposed to a small hole 18 in the lower section of each support member 10 below the latter. A coupling member 20 for connecting the support member to the chain 8 has a large diameter section 21 having a diameter equal to that of a hold 17 and a threaded section 22 having a diameter which is slightly smaller than that of a hole 18 in the lower section of the support member 10. Therefore, when the threaded section is inserted into the hole 18 and then screwed into a threaded hole 19 in the attaching section 12, the large diameter section 21 blocks the hole 17. Accordingly, there is no fear of a spill of granular materials, etc., and it is possible to facilitate the removal of the coupling member 20 for replacement of the support members 10.
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