对石油钻机液力变矩器各工作轮中液体的静压力分布进行了分析，由此得出了液力变矩器各工作轮轴向力的理论计算公式。实例计算发现，泵轮的轴向力拉动泵轮向涡轮靠近；涡轮的轴向力拉动涡轮向泵轮靠近；导轮的轴向力拉动导轮向泵轮靠近。三个工作轮的轴向力随着变矩器的工况变化，在起动工况时达到最大值。泵轮的轴向力最大，且变化起伏较大；其他两轮的轴向力变化较平稳，且数值也较小。轴向力除了与供油压力有关外，主要是与泵轮转速的二次方和循环圆有效直径的四次方有关 The static pressure distribution of the liquid in the working wheels of the hydraulic torque converter of the oil drilling rig is analyzed, and the theoretical calculation formula of the axial force of each working wheel of the torque converter is obtained. The calculation results show that the axial force of the impeller pulls the impeller close to the impeller. The axial force of the impeller pulls the impeller closer to the impeller. The axial force of the impeller pulls the impeller closer to the impeller. The axial forces of the three working wheels change with the working condition of the torque converter and reach the maximum value at the starting condition. The axial force of the pump wheel is the largest and fluctuates greatly. The axial forces of the other two wheels change more smoothly and the values ​​are smaller. In addition to the axial force and the oil supply pressure, mainly with the pump speed and the quadratic effective diameter of the circular diameter of the fourth power