摘要
与钩缓装置相比,牵引杆制造简单、检修方便,如能采用牵引杆代替钩缓装置连接重载重联电力机车,重联机车的制造和运用维护成本将显著降低。利用TDEAS列车纵向动力学软件建立‘1+1’编组牵引2万吨列车模型,分析重联机车采用牵引杆连接对列车纵向冲动的影响,再利用SIMPACK多体动力学软件建立了1台重联机车及2节简化货车组成的列车模型,重联机车分别采用13A型钩缓装置和牵引杆连接。通过机车的轮轴横向力、脱轨系数和轮重减载率等动力学性能指标对比分析牵引杆和钩缓装置的承压能力。结果表明:重联机车采用牵引杆连接对减少列车纵向冲动的影响很小;13A型车钩缓冲器能在直线上承受2500kN的纵向压力,而采用牵引杆连接的重联机车承受同样大小的纵向压力是非常危险的。因此,用牵引杆代替重联机车钩缓装置是不可行的。
Compared with the coupler system, traction rod＇s manufacture and maintenance are simple and convenient. If traction rod can replace the coupler system and be applied into the heavy haul multi-locomotive, the manufacturing and maintenance costs of multi-locomotive will be significantly reduced. Therefore, in this paper though a self-developed train longitudinal dynamics package TDEAS a 20,000t train model with ＇1＋1＇ marshalling mode is established primarily to investigate the effects of traction rod on the longitudinal impulse of the heavy haul multi-locomotive. Subsequently, a heavy haul multi-locomotive model connected to 2 simplified wagon model is formulated with the commercial software SIMPACK, in which the 13A type coupler system and traction rod are respectively applied into the heavy haul multi-locomotive. With this model the compressive capacities of the traction rod and coupler system are investigated in terms of the lateral force of wheelset, the derailment coefftcient and the wheel unloading ratio. The numerical results indicate that the effects of traction rod on the longitudinal impulse of the heavy haul multi-locomotive are negligible. The train with 13A type coupler system is capable for the longitudinal compressive forces with magnitude of 2500kN on the straight track. Whereas, in the same condition the traction rod would impose the great threaten to running safety of heavy haul multi-locomotive. Consequently, the traction rod is not suitable for the heavy haul multi-locomotive.
出处
《机械设计与制造》
北大核心
2018年第1期166-169,共4页
Machinery Design & Manufacture
基金
国家自然科学基金(51575458)
关键词
纵向动力学
重联机车
牵引杆
钩缓装置
承压能力
Longitudinal Train Dynamics
Multi-Locomotive
Traction Rod
Coupler System
Compressive Capacities
