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起重机的起重能力应达到额定起重量。但往往会发生在较低起重量时,起重机尚可工作,而在接近或等于额定起重量时,起升机构无法工作。本文谈谈其起因和排除方法。 1.起重机内部电压损失过大内部电压损失是指从起重机的大车移动供电装置硬滑线与集电器的接触面(或是悬挂式电缆供电的接入起重机的一端)起到电动机定子间的电压降。电缆卷筒供电时,这段电缆电压降不属内部电压损失。按
Crane lifting capacity should reach the rated lifting capacity. However, it is often the case that cranes are still working at lower lifting weights and the lifting mechanism does not work at or near the rated lifting weight. This article talks about its causes and exclusions. 1. Crane internal voltage loss is too large Internal voltage loss is from the crane’s mobile power supply device hard slip line and the collector’s contact surface (or hanging cable-powered access to one end of the crane) from the motor stator Voltage drop. When the cable reel is powered, this cable voltage drop is not an internal voltage loss. press