| 摘要 |
PURPOSE:To lessen displacement of a belt to the utmost by dividing a support frame into a rotary frame and a fixed frame to be automatically adjusted to the optimum position corresponding to rising and falling operations. CONSTITUTION:At the curved portion of a belt conveyer line, roller support frames 11a, 11b for supporting a conveyer belt at that portion are divided into a fixed frame 11b and a rotary frame 11a, and each one end of the frames is rotatably fixed to a boom 3 and a fixed frame 2, respectively, the other ends thereof being fixed to the fixed frame 2 through a link mechanism 19. The rotating displacement of the boom is converted to the rotating displacement of a link supporting the support frames 11a, 11b on the boom side, and the movement of the link is transmitted to a link supporting the support frame on the fixed boom side. Thus, each one end of two support frames is interlocked and moved up and down. Accordingly, floating of the conveyer belt from the support roller can be easily lessened to the utmost. |
