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没有完善的电气传动系统,欲想设计并制造出现代化大功率高效能的电铲是不可能的。电铲电气传动系统的动态性能指标,可靠性及力能指标在很大程度上决定着电铲的生产能力及总效能。国民经济各部门对能源、黑色及有色矿物原料、建筑大型水电站及水利设施等的要求,使露天煤矿和金属矿及其它许多使用电铲的企业,为了扩大生产规模、提高生产率、降低维修费用,提高力能指标而对增大电铲的单机功率,提高其生产能力和使用寿命提出了愈来愈高的要求。由于工作条件恶劣、电铲电气设备的工作特点是:外部的机械及气候条件的不利影响因素多(振动及冲击大,灰尘大,环境温度在40℃～-50℃大范围变化),电动机频繁换
Without a complete electric drivetrain, it is not possible to design and manufacture modern high-power, high-performance power shovels. Electric shovel electric drive system dynamic performance indicators, reliability and strength indicators to a large extent determine the power shovel production capacity and overall efficiency. Various departments of the national economy require energy, black and non-ferrous mineral raw materials, construction of large-scale hydropower stations and water conservancy facilities so that open-pit coal mines and metal mines and many other enterprises using electric shovels, in order to expand production scale, increase productivity and reduce maintenance costs, Improve the power index to increase the power shovel stand-alone power and improve their production capacity and service life of the higher and higher requirements. Due to poor working conditions, the working characteristics of electric shovel electrical equipment are: external mechanical and climatic conditions have many adverse factors (large vibration and impact, dust, ambient temperature 40 ℃ ~ -50 ℃ wide range of changes), frequent motor change