Chain component for assembling chain tackles comprising chains with links with a graded nominal thickness

摘要

In a chain component for assembling chain tackles comprising chains with links with a graded nominal thickness, which component has a chain connecting head with a retaining bolt cut-out passing through the said head, a chain link insertion gap, a retaining bolt passing through an inserted chain link, a retaining bolt lock arranged on one side of the insertion gap and a retaining bolt stop on the other side of the insertion gap, to prevent the retaining bolt intended for fitment to the chain matching the gap size from being interchanged with a retaining bolt which fits the chain with the next smaller nominal diameter, a retaining bolt stop is provided in the cut-out, which axially locks the correct retaining bolt and allows the incorrect retaining bolt to pass through, according to the invention it is proposed that the retaining bolt cut-out (5) on both sides (10, 14) of the chain insertion gap (8) has a continuous unobstructed diameter (D) corresponding to the correct retaining bolt (9), and that the stop (15) consists of one or more lock cylinders (17, 21, 22, 29, 30) which are inserted in the cut-outs (16, 23, 24, 27, 28) and restrict the unobstructed cross-section (B) of the retaining bolt cut- out (5) (Figure 1). IMAGE