Patent ID: 9731949
Date: 2017-08-15
CPC Classifications: B65G,B66F

Claim:
1. An elevating apparatus comprising: a mast extending in a vertical direction; a lift platform configured to be lifted or lowered along the mast; a pair of connecting plates fixed to both side surfaces of the mast, and including flat surfaces facing each other; a pair of frames respectively fixed to surfaces of the pair of connecting plates opposite to the mast; a hanging belt including a first end fixed to an upper portion of the lift platform, and a second end fixed to a lower portion of the lift platform; an upper pulley supporting the hanging belt, the upper pulley being arranged in an upper position; a driving pulley configured to move the hanging belt in a positive direction and a negative direction; at least one idler pulley arranged in front of, in back of, or on both sides of the driving pulley; a lower pulley arranged between the pair of connecting plates, arranged lower than the upper pulley, located at least partially on a lift platform side of the mast, and supporting the hanging belt; and a supporting member arranged between the pair of connecting plates, and configured to pivot around a fulcrum spaced away from a rotation center of the lower pulley in a horizontal direction relative to the pair of connecting plates, and to be fixed, the supporting member including a first end, which extends from the fulcrum in the horizontal direction and supports the lower pulley such that the lower pulley is pivotable, and a second end, which extends from the fulcrum in the horizontal direction, is fixed to one of the pair of connecting plates, and is located on a side of the fulcrum that is opposite to the rotation center of the lower pulley.