The calculation model can be used to optimize the structure and size of the rear horsehead , solve the problem that the structure and size of the rear horsehead affect the kinematic parameters of the polished rod and the torque factor , as well as the performance of the unusual shape beam pumping unit 利用此方法可以准确而迅速地求出不同机型的悬点位移、速度、加速度及扭矩因数等各项运动参数，也可计算优化后驴头的结构尺寸，解决异形游梁式抽油机后驴头结构与尺寸直接影响悬点的运动参数和扭矩因数，进而影响抽油机工作性能的问题。
Abstract : in the light of the problems of high power consumption and low working efficiency in a beam pumping unit , a new method for power saving of the unit is proposed , that is , adopting an optimum structure of the unit and decreasing the periodic load coefficient of the pumping unit by changing the performance characteristics of the electric motor and by increasing the rotary inertia of the unit 文摘:针对游梁式抽油机能耗大，工作效率低的问题，提出游梁式抽油机节能的新方法，即在采用优化抽油机结构的基础上，通过改变电动机的工作特性和增加抽油机转动惯量的办法降低抽油机周期载荷系数。
The optimum design method is utilized to design 12 - 5 - 48hb double - horse head beam pumping unit with rear horse head s outline of spiral of archimedes , and the optimum result is analyzed and compared with double - horse head beam pumping unit with rear horse head s outline of three - section circular arc and beam pumping unit 用该优化方法对12 - 5 - 48hb型后驴头为阿基米德螺线双驴头抽油机进行了优化设计，并对优化结果和后驴头为三段圆弧的双驴头抽油机及游梁式抽油机进行对比分析。
This drilling adopts crank connecting link and walking beam percussion mechanism , which make the drilling possess two percussive functions , normal drilling takes connecting link impact as main mode , when encountering special situation and the connecting link impact can not drill , it can transform into hoisting impact , the stroke length can be modulated , it realizes automatic percussive drilling due to continuous operating of connecting link percussive mechanism , these can enhance drilling efficiency and relieve labor intensity ; it adopts pumping reverse circulation to drain slag , which not only resolves the drilling difficulty in special stratum such as pebble and gravel stratum and hard stratum , but also resolves the problem that the percussive drill ' s efficiency is low ; it adopts spur gear differential mechanism as double cylinders lazy tongs of main hoist , which not only ensures the balance state of drilling tool , but also reduces the mechanical design , and reduces the cost ; the bottom plate traveling motion of this drilling machine adopts walking type ; the drilling tower adopts hydraulic pressure uprising , and reduces the assistant operating time 该钻机采用曲柄连杆、游梁式冲击机构，使钻机具有两种冲击功能;正常钻进以连杆冲击为主，遇到特殊情况，用连杆冲击不能钻进时，可转为卷扬冲击，冲程可调，因连杆冲击机构连续工作，所以实现了自动冲击钻进，可提高钻进效率，减轻劳动强度;采用泵吸反循环的方式排渣，既能有效解决卵砾石地层、坚硬地层等特殊地层钻进的困难，又很好地解决了冲击钻机效率低下的问题;采用直齿圆柱齿轮差速机构作为主卷扬的双筒同步机构，既保证了钻具处于平衡状态，又大大简化了该机构设计，降低了成本;该钻机底盘行走移位采用步履式;钻塔采用液压起立，减少了辅助作业时间。
