公开(公告)号：WO2021148768A1

公开(公告)日：2021-07-29

申请号：PCT/GB2020/053378

申请日：2020-12-30

Applicant: GANTRY RAILING LTD.

Inventor： HALLING, Reece George ,  NELSON, Alexander Daniel Barrons ,  BYGRAVE, Peter Nathan

IPC: B66C7/08 ,  E01B9/32 ,  E01B9/66

Abstract: A clamp device for clamping a boom hinge rail (12) of gantry crane in-situ comprises a cap portion (14) slidably mounted on a base portion (13) and secured together by a locking bolt (15), the cap portion (14) comprising a body (18) and a nose (19) which extends laterally outwardly from the body (18) along a nose axis. The clamp portion (13) and the body (18) of the cap portion (14) comprise complementary opposed arcuate mating surfaces (21, 22) which permit rotational movement to the cap portion (14) relative to the base portion (13) about an axis P which extends perpendicular to the nose axis. The base and cap portions (13, 14) of the clamp always engage each other regardless of the position of the nose of the clamp, so that forces applied to the nose (19) of the clamp (10) by the rail (12) are directly applied to the base portion (13) of the clamp (10), thereby providing a clamp which is less prone to failure.