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大型履带起重机起吊超重物品时都需使用超起桅杆,在起重机频繁变幅过程中,变幅钢丝绳会出现磨损、断丝现象,需要对钢丝绳进行更换。1.传统更换方法传统更换变幅钢丝绳时,需先将超起主臂拆除,再将超起桅杆放落至地面上,才能更换变幅钢丝绳,整个过程至少需要2天时间。考虑到大型吊车高昂的租赁费、项目工期以及施工现场场地问题,必须采取简便高效的方法完成变幅钢丝绳的更换。本文以抚挖400t履带起重机,配备30m超起桅杆、36m超起主臂为例,介绍1种快速更换变幅钢丝绳的方法。400t履带起重机主臂部件如图1所示。
Large-scale crawler cranes hoisting overweight items are required to use the super-mast, frequent fluctuations in the crane process, luffing wire rope wear and broken wire phenomenon, the need for wire rope replacement. 1. Traditional replacement method When replacing the luffing ropes, you need to dismantle the super boom and drop the super mast to the ground to change the luffing wire rope. The whole process needs at least 2 days. Taking into account the high cost of large crane rental fees, project duration and site construction site, we must take a simple and efficient way to complete the luffing rope replacement. In this paper, 400t crawler dredging cranes, equipped with 30m super mast, 36m super up the main arm, for example, introduces a rapid replacement luffing rope method. 400t crawler crane main arm components shown in Figure 1.