发明授权
- 专利标题: Lifting device and method for concrete elements
- 专利标题(中): 混凝土构件的起重装置和方法
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申请号: US13125593申请日: 2009-10-23
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公开(公告)号: US09409751B2公开(公告)日: 2016-08-09
- 发明人: Ernest Frederick Comerford , Mark Andrew Rankin
- 申请人: Ernest Frederick Comerford , Mark Andrew Rankin
- 申请人地址: AU North Sydney, New South Wales
- 专利权人: Obelix Holdings Pty Limited
- 当前专利权人: Obelix Holdings Pty Limited
- 当前专利权人地址: AU North Sydney, New South Wales
- 代理机构: Bishop Diehl & Lee, Ltd.
- 优先权: AU2008905461 20081023
- 国际申请: PCT/AU2009/001401 WO 20091023
- 国际公布: WO2010/045692 WO 20100429
- 主分类号: B66C1/54
- IPC分类号: B66C1/54 ; B66C1/66 ; E04G21/14
摘要:
A lifting device (110) for concrete elements such as bridge beam and deck elements, panels and the like up to and beyond 1,000 tons (t) is described. The lifting device may be suitable for face and edge lifting of concrete elements that have a suitable cavity formed within or through them. The lifting device (110) may include a lifting eye (116) connected to an elongate member/shank (114) that has a flared end (122). A sleeve (126) about the shank (114) may be used to raise and lower the moveably attached wedges (124) to and from the flared end (122). In use the wedges (124) upon the flared end (122) prevent the withdrawal of the lifting device (110) from the cavity of the concrete element. A cavity former is also described that may be used in the casting of the concrete element to form a suitable cavity.
公开/授权文献
- US20110262263A1 Lifting Device and Method for Concrete Elements 公开/授权日:2011-10-27
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