摘要
针对快速掘进系统存在的关键元部件可靠性不足问题,介绍了链轮、销排的应用场景,采用滚动摩阻力学理论分析了链轮力学特性。建立了链轮渐开线齿廓二维模型,导入三维建模软件,将自移动力站、迈步式自移机尾的带式输送机架主体结构力学等效为质量块,建立了包含自移动力站、带式输送机架的链轮与销排三维装配体,导入动力学分析软件,建立链轮与销排动力学分析模型。设置约束、接触力、阻力和驱动,进行了5、10、15°/s的不同链轮转速下动力学仿真。仿真结果表明:为减小啮合冲击力峰值,自移动力站链轮开始运行时,应采用较小的转速驱动;当运行稳定后,再将链轮转速由低速逐渐提升至高速,以获得较高的驱动效率和较小的冲击力。
Aiming at the problem of low reliability of key components in the fast tunneling system,the application scenarios of the sprocket and the pin row were introduced,and the mechanical properties of the sprocket were analyzed by using the theory of rolling friction mechanics.A 2D model of the involute tooth profile of the sprocket had been established,and then imported into the 3D modeling software.The main structures of the self-moving power station and the belt conveyor frame of the stepping self-moving tail were mechanical equivalent to the mass block,and the 3D assembly of the sprocket and the pin row including the self-moving power station and the belt conveyor frame was established.After that,the 3D assembly was imported into the dynamic analysis software and dynamic analysis model for the sprocket and the pin row was established.The dynamic simulation of different sprocket speeds of 5,10,and 15°/s was carried out by setting constraints,contact forces,resistance,and drive.The result indicated that in order to reduce the peak meshing impact force,the sprocket of the self-moving power station should be driven at a lower speed when starting to operate.After stable operation,the sprocket speed should be gradually increased from low speed to high speed to achieve higher driving efficiency and smaller impact force.
作者
张礼才
ZHANG Licai(CCTEG Taiyuan Research Institute Co.,Ltd.,Taiyuan 030032,Shanxi,China;National Engineering Laboratory for Coal Mining Machinery,Taiyuan 030032,Shanxi,China)
出处
《矿山机械》
2023年第9期10-13,共4页
Mining & Processing Equipment
基金
国家重点研发计划(2020YFB1314003)
山西省攻关专项(2020XXX001)
公司自立项目(M2023-MS01)。
关键词
快速掘进
链轮
销排
滚动摩阻
渐开线齿廓
力学等效
动力学分析
啮合冲击力
fast tunneling
sprocket
pin row
rolling friction
involute tooth profile
mechanical equivalence
kinetic analysis
meshing impact force
