建立了详细的行星齿环换向机构运动学分析模型；
The kinematic analysis model has set up for planetary gear-ring inverse mechanism.
抽油机具有双链条同步驱动换向机构，可实现增距式柔性换向；
The Pumping unit has a double-chain synchronous driving and reverse mechanism, and can realize flexible reverse with stroke increment;
另一种是为气压泵设计的机动自动换向机构，该机构是利用渐开线(零度压力角)凸轮机构作为换向机构。
The other is a mechanical automatic reversing mechanism designed for atmospheric pumps, which adopts involute (zero pressure Angle) CAM mechanism as reversing mechanism.
这种抽油机以连杆式换向机构取代原有的十字滑块式换向架，以重块平衡代替气平衡，并改进了导向系统。
The new unit uses the pitman reserse mechanism instead of the crosshead slide reverse rack, adopts weight balancing instead of air balancing, and is provided with an improved guiding system.
在分析行星轮与内齿环各段啮合情况的基础上，建立了行星齿环换向机构中齿环滑块的速度和加速度计算模型。
Based on the meshing analysis of planetary gear and inner gear-ring, the velocity and acceleration calculation model of the slider is established.
在分析行星轮与内齿环各段啮合情况的基础上，建立了行星齿环换向机构中系杆的角速度和角加速度计算模型。
Based on the meshing analysis of planetary gear and inner gear-ring, the angular velocity and angular acceleration calculation model of the rod is established.
介绍一种新型手用工具的工作原理及设计方法。该工具运用了一种新型棘轮换向机构，可提高手工攻丝或拆装螺纹工件的工作效率。
The operating principle and design method of a new manual tool are introduced. An intermittent revolution mechanism is applied to the tool to improve screwing efficiency.
链结子为换向机构，具有滑动轴承功能，并联循环链和主传动链，把循环运动变为上下往复运动。承载链直接承受平衡载荷，可大幅度减小主传动链的受力。
The chain link is the reverse mechanism, functions as sliding bearing and makes the cycle chain and main drive chain parallel to change the circulation into reciprocation.
该抽油机的主要组成结构包括机架，棘轮换向减速箱，碰泵机构，让位机构，平衡重保护装置，刹车机构。
This pumping unit is made up of supporting frame, ratchet reversing gearbox, touch the pump body, make way for agencies, balance weight protection, brake mechanism.
由电液比例换向阀和轴向变量泵组成的比例变量泵系统是一种新型液压动力机构。
The proportional variable pump system made up with electrohydraulic proportional reversing valve and axial variable pump is a new kind of hydraulic dynamic structure.
电动机单向旋转，用曲柄摇杆机构换向，实现悬点的往复直线运动。
The prime motor rotates in a fixed direction and the alternating motion of the carrier bar is accomplished by the crank-rocker mechanism.
采用了车组靠轨道便能换向运行的机构，取消了回转机构，实现了辐照室及其它恶劣环境中无易损操纵件。
The mechanism which can reverse by the rail of the wagon group is adopted, the rotation mechanism is cancelled, and no fragile control piece is realized in irradiation room and other bad environment.
工作机构的变速和换向靠调节泵或马达的变量机构实现，避免了开式系统换向过程中所出现的液压冲击和能量损失。
The work of agencies to rely on speed and for adjusting the pump or motor variables agencies to achieve, to avoid the open loop system for the process are the hydraulic impact and energy loss.
通过操作在多路换向阀旁的油门手柄，可控制发动机的转速，从而调节系统的流量改变机构的工作速度。
Operating the engine-control handle, the engine speed can be controlled, then the flow of control system can change the operation speed of frame.
可换向进料导向机构和通过行程开关自动改变电机的转向，从而实现转子正反向工作，大大延长易损件的使用寿命；
Reversible rotor extends a much longer service life of wearing parts due to the reversible feed guiding mechanism and the automatic changing of motor rotation direction by dint of limited switches.
可换向进料导向机构和通过行程开关自动改变电机的转向，从而实现转子正反向工作，大大延长易损件的使用寿命；
Reversible rotor extends a much longer service life of wearing parts due to the reversible feed guiding mechanism and the automatic changing of motor rotation direction by dint of limited switches.
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