铁道标准设计
鐵道標準設計
철도표준설계
RAILWAY STANDARD DESIGN
2015年
1期
42-46
,共5页
重载铁路%重载道岔%嵌入式整铸叉心%高锰钢辙叉%基本轨切削%尖轨加厚
重載鐵路%重載道岔%嵌入式整鑄扠心%高錳鋼轍扠%基本軌切削%尖軌加厚
중재철로%중재도차%감입식정주차심%고맹강철차%기본궤절삭%첨궤가후
Heavy haul railway%Heavy haul turnout%Embedded cast crossing%High manganese steel crossing%Cutting of stock rail%Thickening of switch rail
重载道岔是重载铁路的关键设备，也是线路的薄弱环节，其尖轨、辙叉心轨的寿命是影响重载道岔寿命的决定因素。针对既有重载道岔调研情况，研究近年来我国重载道岔关键部件(尖轨、辙叉)的结构改进技术方案，并且结合上道试用验证。实际效果证明，改进后的方案能够适应我国重载铁路“大轴重、高密度和超大运量”的使用要求，且大大延长了主要部件的寿命，提高了重载铁路运能，减少了养护维修工作量。
重載道岔是重載鐵路的關鍵設備，也是線路的薄弱環節，其尖軌、轍扠心軌的壽命是影響重載道岔壽命的決定因素。針對既有重載道岔調研情況，研究近年來我國重載道岔關鍵部件(尖軌、轍扠)的結構改進技術方案，併且結閤上道試用驗證。實際效果證明，改進後的方案能夠適應我國重載鐵路“大軸重、高密度和超大運量”的使用要求，且大大延長瞭主要部件的壽命，提高瞭重載鐵路運能，減少瞭養護維脩工作量。
중재도차시중재철로적관건설비，야시선로적박약배절，기첨궤、철차심궤적수명시영향중재도차수명적결정인소。침대기유중재도차조연정황，연구근년래아국중재도차관건부건(첨궤、철차)적결구개진기술방안，병차결합상도시용험증。실제효과증명，개진후적방안능구괄응아국중재철로“대축중、고밀도화초대운량”적사용요구，차대대연장료주요부건적수명，제고료중재철로운능，감소료양호유수공작량。
The heavy haul turnout is a key equipment of the heavy haul railway, and also a weak link of the track. The service life of the switch rail and crossing nose is the determinant that affects the life of the heavy haul turnout. Based on the survey of the existing heavy haul turnouts, this paper focuses on the structure improvement plans of the key components ( switch rail, frog) of China's heavy haul turnouts in recent years and verify them with on-track tests. The actual results prove that the improved plans can meet the requirements of heavy axle load, high density and large traffic volume of China's heavy haul railway, greatly extend the life of the main components, improve the transport capacity of the heavy haul railway, and reduce the workload of maintenance and repair.
