| 摘要 |
An apparatus for use of a chain. The chain is formed of: shaped pieces, to be connected to each other at jointing points in jointing parts, arranged at opposite ends of the shaped pieces, utilizing joint pins. A first jointing point of the jointing parts is arranged as a uniform projection assembly that is narrower than the width of a center part of the shaped piece. A second jointing point as a fork assembly. Each of the jointing points has a hole in order to form a uniform chain by placing the projection assembly of a previous shaped piece between the fork assembly of a following shaped piece and by placing a joint pin in the hole; and a drive arrangement including at least one chain wheel. A supporting surface arranged in the center part of the shaped piece of the chain includes a notch that is arranged crosswise in respect to the moving direction of the chain and that is, during conveying of the chain in cooperation with counterpart surfaces, of the chain wheel and being arranged according to the notches of the chain and crosswise in respect to the moving direction of the chain. A shaped piece of the chain is arranged strengthened by an expansion assembly protruding from a bottom of the notch and continuing uniformly in the longitudinal direction of the shaped piece at the point of the notch. The chain wheel includes counterpart surfaces that settle against the bottom of the notch in the shaped piece. The counterpart surfaces include a recess assembly for the expansion assembly. |
