公开(公告)号：WO0001610A2

公开(公告)日：2000-01-13

申请号：PCT/GB9902113

申请日：1999-07-02

Applicant: RENOLD PLC ,  VARNAM STEVEN M ,  RAGNITZ DETLEF ,  CHRISTMAS MICHAEL CHARLES

Inventor： VARNAM STEVEN M ,  RAGNITZ DETLEF ,  CHRISTMAS MICHAEL CHARLES

IPC: B66F9/08 ,  F16G13/06 ,  F16G13/08 ,  F16G13/12 ,  B66F9/00

CPC classification number: B66F9/08 ,  F16G13/06 ,  F16G13/08

Abstract: A chain such as that used in a fork lift truck carriage lifting mechanism has a plurality of interleaved link assemblies each having a pair of outer link plates and a plurality of intermediate link plates. The outer link plate has a strength less than that of any intermediate link plate when measured in an unassembled state. The reduced strength may be achieved by a reduction in thickness or head area of the link plate. The outer link plates may have a stiffness of 60 % to 90 % of the average stiffness across the chain and a first group of intermediate link plates of certain chain configurations have a stiffness of 70 % to 90 % of the average stiffness of the chain. The invention provides for a chain in which the load is more evenly shared between link plates and allows a single composite chain to be replaced by two smaller chains without loss of load capacity.

Abstract translation: 诸如在叉车车厢提升机构中使用的链条具有多个交错连杆组件，每个连接组件具有一对外链板和多个中间连接板。 当在未组装状态下测量时，外链板的强度小于任何中间链板的强度。 减小的强度可以通过链板的厚度或头部面积的减小来实现。 外链板可以具有横跨链的平均刚度的60％至90％的刚度，并且某些链构型的第一组中间连接板具有链的平均刚度的70％至90％的刚度。 本发明提供了一种链条，其中负载在链板之间更均匀地共享，并且允许单个复合链由两个较小的链替代，而不损失负载能力。