| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable unloader allowing easy disassembly, carriage and assembling, and allowing arbitrary selection of an installation position. SOLUTION: This unloader has plural vertically connectable posts 1, a chain 19 disposed along the full length of the connected posts 1, and carriage part 8 slidably provided to the connected posts 1. The carriage part 8 has a sprocket 11 engaging with the chain 19, a guide sprocket 12, and a drive means for the sprocket 11.
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