基于传统的液力机械变速箱结构，提出了一种适用于百吨级以下矿用车的混合动力变速箱传动系统，使矿用车实现纯电、纯机械及混合动力等16 种不同工作模式的切
换． 利用模拟杠杆法分析混合动力变速箱系统在不同工作模式下的动力传动特点; 对两种不同传动方式下的矿用车整车结构进行仿真建模，并利用实际矿山道路循环工况实验数据对其进行仿真分析． 结果表明: 与传统的液力机械传动方式相比，混合动力变速箱传动方式下的整车驱动性能提高了7. 3%; 矿山道路单循环工况中，整车经济性能提高了15. 5%，其中54%是由于电机对发动机工作点的主动调节，46% 来自于电机对制动能量的回收利用．

Proposed is a hybrid transmission system ( HBTS) on the basis of traditional hydraulic transmission systems ( HDTS) ,which is appropriate for the heavy-duty mine trucks ( HDMT) with a load capacity below 100 t.In HBTS,sixteen operation modes including motor-only mode,engine-only mode and hybrid driving mode can be realized.In the investigation,firstly,power transmission features of the HDTS in different operation modes are analyzed by means of lever analogy method.Then,the complete structures of mine trucks respectively with HBTS and HDTS are modeled by simulation and are analyzed with the experimental data of the trucks running in real mine road.The results show that the power performance of the truck with HDMT is 7. 3% higher than that with HBTS; and that the vehicle economic performance improves by 15. 5% in real mine road.In addition,54% of the economic improvement is arrived at thanks to the active adjustment of engine operation points by the motor and the rest is reached thanks to the recycle of braking energy.