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宝钢一期工程,使用了大批各类型的起重机。六年多使用过程中发生了一些事故,这些事故可资借鉴,启示我们在今后起重机使用中需加强注意的几个方面问题,现简述如下。1.超负荷吊装一种是未全面考虑影响重量的因素。例如KH180—2履带式起重机一次吊装作业中,臂长31m、仰角78°、荷重14.5t(在允许范围内)。但因停机面前高后低3°、左低右高2°,起吊后向左回转至75°时,超负荷倾斜,造成折臂。例如Q2—5汽车起重机吊卸钢筋作业中,对其吊重估计不足,超负荷而导致液压马达损坏。另一种是超负荷强行吊装,例如
The first phase of Baosteel used a large number of cranes of various types. In the course of more than six years of use, some accidents have occurred. These accidents can be used for reference and inspire us to mention several aspects that we need to pay more attention to in the future use of cranes. 1. Overloading One of the factors that does not fully consider the impact on weight. For example, in the hoisting operation of KH180-2 crawler crane, the arm length is 31m, the elevation angle is 78°, and the load is 14.5t (within the allowable range). However, due to the high 3° after the stop and the low left and right high of 2°, the crane turned to 75° to the left and tilted when overloaded. For example, in the Q2-5 truck crane unloading rebar operation, its hoisting weight is underestimated and the hydraulic motor is damaged due to overload. The other is overloaded lifting, for example