| 摘要 |
PURPOSE:To provide stable continuous transportation and simplify the elongation adjustment and drive control of a chain by furnishing an expansion hook to hold a tray level during vertical movement, and by installing a support and guide plate to guide the tray during horizontal movement. CONSTITUTION:A tray 15 is fixed by its front ends to a pair of endless chains 14, on the right and left, with a coupling pin 16, while the rear ends are fastened to a chain 14 by an expansion hook 23. This expansion hook 23 gets minimum length when passing through a horizontal path 20, and the tray 15 is supported at its bottom surface by a lower part support and guide device 30 to be held level, and at the end of the lower part horizontal path 20, a dog 33 of a lower part heaving device 32 heaves the lower part of the tray 15. In this process, the expansion hook 23 is elongated by and by to get maximum length when passing through the vertical path 21, so as to held the tray 15 level at all times. This simplifies elongation adjustment of the chain as well as provides stable continuous transportation.
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