Design And Performance Study Of Multi-vehicle Continuous Traction Device For Mine Locomotive

Traction gearboxes applied to mine locomotives are without differentials. And the curve line negotiating capacity is poor, which will speed up wheel-rail wear and power consumption, or even lead to derailment accidents. In order to improve the traction and steering performance of mine locomotives, the multi-vehicle continuous traction device was proposed to realize the multi-vehicle traction of mine locomotives. Dynamics performance of its transmission mechanism was analyzed. And the finite element analysis was used to analyze contact strength and vibration characteristics of spiral bevel gears of the penetrable final drive.Based on the working principle of tandem axles, a structural scheme was selected for the multi-vehicle continuous traction device. And the design of its main components, the penetrable final drive and the differential, was conducted. According to the working principle of the multi-vehicle traction device, the theoretical analysis on its kinematic and dynamic characteristics was conducted. The three-dimensional assembly model of the multi-vehicle continuous traction device was established in CATIA. The virtual prototype model of its transmission mechanism, with the help of Sim Designer and ADAMS, was established. According to the actual conditions, a dynamics simulation was conducted under straight driving and turning driving. Then the simulation parameters, including angular velocity, meshing force and torque, were obtained and were consistent with the theoretical value, which verified the correctness and feasibility of the virtual prototype model.ANSYS Workbench was adopted to conduct contact analysis and modal analysis for spiral bevel gears of the penetrable final drive. Their stress distribution, strain distribution and stress concentration area were obtained, which proved the reliability of this method. Their natural frequencies and vibration modes, at the same time, were obtained, which proved that the rotation could not cause the resonance of spiral bevel gears under normal conditions. Meanwhile, the weaknesses of gear vibration were intuitively discovered. These simulation results provided the reliable theoretic support for structure design, model optimization and damping vibration of spiral bevel gears of the penetrable final drive.