Experimental research on grouser traction of deep-sea mining machine

The traction characteristics of the grouser, cutting the simulative soil of deep-sea sediment, with different tooth widths, tooth heights, and ground pressures are studied with traction characteristic test apparatus. A traction-displacement model is obtained by combining the analysis of the cutting mechanism. The results show that the traction-displacement curves of grousers with different tooth widths, tooth heights, and ground pressures have the same changing trend, which matches the Wong traction model. Their sensitivity coefficient and shear modulus are slightly fluctuated. Therefore, the average values can be used as the traction model parameters. The maximum traction of the grouser with a two-side edge and a 10mm tooth width increment changing with the tooth height and ground pressure can be determined according to the grousers with different tooth widths. By combining the traction model parameters, the traction-displacement curve of the grouser with a certain group values of tooth width, tooth height, and ground pressure can be predicted. Therefore, the slip of the mining machine can be prevented to improve the mining efficiency.

利用牵引特性试验装置研究了不同齿宽、齿高和接地压力的履刺切割深海沉积物模拟土壤的牵引特性。通过结合切削机理分析，得到了牵引 - 位移模型。结果表明，不同齿宽、齿高和接地压力的履刺牵引 - 位移曲线变化趋势相同，符合王（Wong）牵引模型，其敏感系数和剪切模量略有波动，因此可将平均值用作牵引模型参数。根据不同齿宽的履刺，可以确定双侧刃且齿宽增量为10mm的履刺的最大牵引力随齿高和接地压力的变化情况。结合牵引模型参数，可以预测具有特定齿宽、齿高和接地压力组合值的履刺的牵引 - 位移曲线。因此，可以防止采矿机打滑，提高采矿效率。