Split type crankshaft and counterweight method thereof

The invention discloses a split type crankshaft and a counterweight method thereof, the split type crankshaft comprises a crank and a counterweight block, a mounting hole is formed in the target position of the crank, the counterweight block is fixedly arranged in the mounting hole, and the material density of the counterweight block is larger than that of the crank. According to the split type crankshaft provided by the invention, the unbalance rate is adjusted by utilizing a high-density material, and the change of the volume of the crankshaft cannot be caused, so that the volume of an engine is not changed; according to the invention, the unbalance amount of the split type crankshaft can be measured one by one, and then the size and position of the balancing weight can be calculated according to different unbalance amounts, so that each split type crankshaft can be ensured to reach an optimal balance state. 本发明公开了一种分体式曲轴及其配重方法，其中分体式曲轴包括曲柄和配重块，所述曲柄的目标位置设有安装孔，所述配重块固设在所述安装孔内部，且所述配重块的材料密度大于所述曲柄的材料密度。本发明所提供的分体式