The main drive chain and the bearing chain divide the polished rod load into reverse pumping load and equilibrium load.
主传动链与承载链将悬点载荷分解为换向抽汲载荷与平衡载荷。
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.
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 present invention relates to mechanics, and is one kind of gear with different bearing capacity for forward and reverse force transmission.
本发明的名称是由双圆弧和渐开线组成的不对称齿形的齿轮传动。它属于机械领域。
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