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本报讯由华北石油第二机械厂研制开发的CYJY12－4．8～37HB偏轮游梁抽油机是一种用于开采低粘原油、粘稠原油及高含水原油的新一代节能采油设备。该抽油机以异相游梁抽油机为基础模型，在游梁尾部装了一个偏轮机构，并以此偏轮为中心形成一特殊的六连杆体系。减速箱输出扭矩平?
The second CYJY12-4.8 ~ 37HB wheel beam pumping unit developed by North China Petroleum Second Machinery Factory is a new generation of energy-saving oil extraction equipment for the exploitation of low viscosity crude oil, viscous crude oil and high crude oil . The pumping unit based on out-of-phase beam pumping unit is equipped with an eccentric gear mechanism at the rear of the beam, and a special six-link system is formed around the eccentric gear. Gearbox output torque flat?