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从事钢筋混凝土构件吊装的人员,一提起“L”梁(俗称“锯齿”梁或“镰刀”梁)的吊装,都感到有两个主要问题很棘手,一是梁的“翻身”问题,二是起吊过程中至直立状态时的钢丝绳自动调衡问题。一、“L”梁的“翻身”问题在大中型构件的施工中,由于考虑长距离的运输、装卸等各种不利因素给施工带来的困难,施工单位首先考虑采用现场预制的办法来解决。而有时现场预制又受到场地面积大小、就位方位、起吊位置、安装高度、安全等的局限,所以一般需提前在现场作好场地规划、
Personnel engaged in the lifting of reinforced concrete components, mentioning the lifting of “L” beams (commonly known as “sawtooth” beams or “silver blades”) feel that there are two major problems that are difficult to handle. One is the problem of “turnover” of beams, and the other is The automatic adjustment of the wire rope during the lifting process to the upright state. First, the “L” beam “turn over” problem In the construction of large and medium-sized components, due to taking into account the long-distance transport, loading and unloading and other unfavorable factors to the construction difficulties, the construction unit first consider the use of on-site prefabricated methods to solve . In some cases, on-site prefabrication is limited by the size of the site, the position of the seat, the position of the lift, the height of the installation, and the safety. Therefore, it is generally necessary to make site planning in advance at the site.