| 摘要 |
A modular plastic conveyor belt has upright support members at ends of each row and, in some cases, at intermediate positions, to support a conveyor tier above such that the belt is self-supporting in a helical stack in a spiral conveyor system. Modular rows can be made up of one or more modules, and the modules can be in various different configurations. The support members or spacer frames are either integral or securely connected to heavier link ends in end members of the modules. Preferably there are teeth and notches in the support frames and the bottom of the end member of the tier above, to hold the tiers of the helical stack in registry, preventing sliding and misalignment.
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