公开(公告)号：WO2013162796A1

公开(公告)日：2013-10-31

申请号：PCT/US2013/033266

申请日：2013-03-21

Applicant: THE WILL-BURT COMPANY

Inventor： VANDEGRIFT, Darrell, K. ,  ARNOLD, James, S.

IPC: F16M11/04 ,  E04H12/20 ,  H01Q1/12

CPC classification number: B66F3/00 ,  E04H12/20 ,  F16M11/046 ,  F16M11/18 ,  F16M11/24 ,  F16M11/26 ,  F16M11/36 ,  F16M2200/027 ,  F21V21/06 ,  H01Q1/1235 ,  H01Q1/1242

Abstract: Described herein is a safety restraint mechanism for a mast assembly. The safety restraint mechanism comprises a tension line attached to a lever and a winch mechanism such that operation of the winch mechanism translates a carriage assembly along the mast. A cam brake including an engagement profile at a first end thereon is pivotally attached to the lever at a second end. The cam brake is also pivotally attached to the carriage assembly such that the engagement profile pivots into a brake position or a free lift position relative to a tension force acting on the lever. The lever is pivotally attached to the second end and includes a kickstand. The engagement profile having a protruded portion to abut the tubes in a brake position and a relief portion to space the cam brake from the tubes in a free lift position.

Abstract translation: 这里描述了一种用于桅杆组件的安全限制机构。 安全限制机构包括附接到杠杆和绞盘机构的张力线，使得绞盘机构的操作沿着桅杆平移滑架组件。 包括其第一端处的接合轮廓的凸轮制动器在第二端枢转地附接到杆。 凸轮制动器也可枢转地附接到滑架组件，使得接合轮廓相对于作用在杆上的张力枢转到制动位置或自由提升位置。 杠杆枢转地附接到第二端并且包括支架。 接合轮廓具有突出部分以在制动位置邻接管和释放部分，以将凸轮制动器与自由提升位置中的管隔开。