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。

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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。

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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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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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