排土机配重臂的优化设计与有限元分析

Optimization design and FEA of counterweight boom of dumping spreader

配重臂是维持排土机质心稳定的重要部分。目前配重臂上的配重块均为固定式,排土机不能在空载和满载工况下都达到最佳平衡。将固定式配重块改为滑动式配重块,通过在不同工况下调整配重块的位置,使排土机达到整机平衡。并利用ANSYS对排土机在不加装配重块、加装固定式配重块和加装滑动式配重块时空载和满载工况下的质心偏移量进行了仿真分析。结果表明,相比采用固定式配重块,采用滑动式配重块极大地提高了排土机在不同工况下的稳定性。

The counterweight boom is an important part of maintaining the stability of the dumping spreader＇s center of mass. At present, the counterweight block is fixed in the counterweight boom, thus the dumping spreader fails to achieve the best balance both in the no-load and full-load mode. In the paper, the fixed counterweight block was replaced by the sliding one, by adjusting the position of the sliding counterweight block to make the dumping spreader reach balance. In addition, ANSYS was used to simulate the offset of the dumping spreader＇s center of mass separately in without counterweight block mode, with fixed counterweight block mode and with sliding counterweight block mode. The results showed that compared with the dumping spreader with fixed counterweight block, the dumping spreader with sliding counterweight block was characterized by excellent stability in various operation modes.