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我国各油田采用的常规游梁式抽油机大都配用三相异步电动机作动力。电动机专业标准JB3074—82《Y系列(IP44)三相异步电动机技术条件》规定了圆柱形轴伸直径D,长度E和键槽F、G的基本尺寸。但至今未制定圆锥形轴伸的新标准。我们过去在生产与抽油机配套的JQO2系列高启动转矩电动机时,按GB757—79《电机圆锥形轴伸》A型结构(如图1所示)进行设计和生产。
Most of the conventional beam pumping units used in various oil fields in our country are equipped with three-phase asynchronous motors. Motor professional standards JB3074-82 “Y series (IP44) three-phase asynchronous motor technical conditions” provides cylindrical shaft diameter D, length E and keyway F, G basic dimensions. However, no new standard for conical shaft extension has been established so far. We used to design and manufacture the JQO2 Series High Start-up Torque Motor with pumping unit according to GB757-79 “Motor Conical Shaft Extension” Type A Structure (shown in Figure 1).