Adhesion Characteristics of Wheel/Rail during Train Running on Straight and Uphill Railways
-
摘要: 利用JD-1型轮轨模拟试验机模拟了列车在平直道和上坡道运行时, 在干态、水介质、污油介质工况下轮轨间的粘着特性。结果表明: 在干态、水介质和污油介质工况下, 在上坡道运行时的轮轨间的粘着系数与平直道运行时的相比分别约下降了46%, 50%和24%; 在平直道运行时, 污油介质工况下模拟轨表面的磨痕最窄、磨损最小, 水介质工况下的次之, 干态工况下的磨痕最宽、磨损最大; 在上坡道运行时, 水介质工况下的磨痕最窄、磨损最小, 干态工况下的次之, 污油介质工况下的磨痕最宽, 磨损最大。Abstract: The train running on straight and uphill railways was simulated by JD-1 wheel / rail simulation tester, and the adhesive characteristics of wheel/rail under dry, water and waste oil conditions were studied. The results show that comparing with straight railway, the wheel/rail adhesion coefficient on uphill railway dropped approximately 47% under dry condition, dropped approximately 50% under water condition and dropped approximately 24% under waste oil condition. During running on straight railway, the wear scar on simulated rail was the narrowest and the wear was the minimum under waste oil condition, the followed under water condition, and the greatest under dry condition. During running on uphill railway, the wear scar on simulated rail was the narrowest and the wear was the minimum under water medium condition, the followed under dry conditions and the greatest under waste oil condition.
-
Keywords:
- uphill railway /
- adhesion coefficient /
- wear scar /
- railway /
- steel rail
-
-
[1] 张曙光.中国高速铁路与城市化发展[J].中国科学院院刊, 2010, 25(3): 264-270. [2] 李向国.高速铁路技术[M].北京: 中国铁道出版社, 2005. [3] 何华武.快速发展的中国高速铁路[J].中国铁路, 2006(7): 23-31. [4] BAEK K, KEIJI YOGOKU K, NAKAHARA T. An experimental study of transient traction characteristics between rail and wheel under low slip and low speed onditions[J].Wear, 2008, 265: 1417-1424. [5] 申鹏, 宋建华, 王海洋, 等.环境条件对轮轨粘着特性影响的试验研究[J].铁道学报, 2011, 33(5): 26-30. [6] SPIRYAGIN M, LEE K S, HONG H Y. Control system for maximum use of adhesive forces of a railway vehicle in a tractive mode[J]. Science Direct, 2008, 22: 709-720. [7] 申鹏, 王文健, 张鸿斐, 等. 撒砂对轮轨粘着特性的影响[J].机械工程学报, 2010, 46(16): 74-78. [8] 马大炜. 关于大秦线重载列车下坡道安全运行和纵向力问题[J].铁道车辆, 2005, 43(1): 1-5. [9] 杨勇军. 坡道对机车轴重转移的影响分析[J].铁道机车车辆, 2007, 27(2): 7-11. [10] 张志勤, 宋元胜. 城际铁路最大坡度研究[J].高速铁路技术, 2011, 2(1): 8-11. [11] SPIRYAGIN M, LEE K S, HONG H Y, et al. Modeling of adhesion for railway vehicles[J].Journal of Adhesion Science and Technology, 2008, 22: 1017-1034. [12] CHEN H, BAN T, ISHIDA M, et al. Experimental investigation of influential factors on adhesion between wheel and rail under wet conditions[J].Wear, 2006, 265: 1504-1511. [13] CHEN H, ISHIDA M, NAKAHARA T. Analysis of adhesion under wet conditions for three-dimensional contact considering surface roughness[J].Wear, 2005, 258: 1209-1216. [14] ZHANG Wei-hua, CHEN Jian-zheng, WU Xue-jie, et al. Wheel/rail adhesion and analysis by using full scale roller rig[J].Wear, 2002, 253: 82-88.
计量
- 文章访问数: 4
- HTML全文浏览量: 0
- PDF下载量: 1
下载:
