重型采煤机齿轨轮啮合研究
发布时间：2018-10-12 21:28
【摘要】：现代采煤机的牵引方式主要为齿轨销轨式无链牵引,齿轨轮承担着传递扭矩、驱动采煤机行走的重要任务,是采煤机牵引机构的关键零件之一。随着采煤机功率不断增加,机身越来越重,齿轨轮的负荷越来越大,其使用寿命普遍缩短。本文采用理论分析与有限元结合的方法,仿真和对比分析了国产齿轨轮与进口齿轨轮在不同中心距下与销排的啮合特性。完成的主要研究工作如下:(1)运用理论分析的方法研究了采煤机、运输机和液压支架“三机配套”的约束关系,得出了齿轨轮要适应变中心距,变节距等工作环境的具体参数。(2)对国产现有147mm节距齿轨轮在使用过程中出现的故障进行归纳和分析,研究结果显示:现有齿轨轮啮合面短、齿形曲线不合理、齿根偏瘦是齿形存在的问题。(3)利用ABAQUS软件分别建立了国产齿轨轮和进口齿轨轮与销排以变中心距啮合时的有限元模型并进行对比分析,结果表明:以标准中心距和最大中心距与销排啮合时,进口齿轨轮的啮合特性好于国产齿轨轮;以最小中心距啮合时,进口齿轨轮齿面接触应力的波动和峰值均大于国产齿轨轮,但其齿根弯曲应力的波动和峰值小于国产齿轨轮。(4)按照进口齿轨轮齿形生产制造齿轨轮实验件,经过在煤矿上的使用,其寿命大大高于原国产齿轨轮。
[Abstract]:The traction mode of modern shearer is mainly non-chain traction of tooth rail pin rail, the gear rail wheel undertakes the important task of transmitting torque and driving shearer walking, and it is one of the key parts of the haulage mechanism of shearer. With the increasing power of shearer, the fuselage is getting heavier and heavier, the load of the gear rail wheel is increasing, and its service life is generally shortened. In this paper, theoretical analysis and finite element method are used to simulate and compare the meshing characteristics of domestic and imported gear rail wheels with pin row at different center distances. The main research works are as follows: (1) the constraint relation of "three machines" of shearer, conveyer and hydraulic support is studied by using the method of theoretical analysis, and it is concluded that the gear rail wheel should adapt to the variable center distance. (2) Induction and analysis of the malfunctions of the existing 147mm pitch gear in operation. The results show that the mesh surface of the existing 147mm pitch gear is short, and the tooth profile curve is unreasonable. The thin tooth root is the problem of tooth shape. (3) the finite element model of the gear rail wheel made in China and the imported gear meshing with the pin are established and compared with each other by using ABAQUS software. The results show that when the standard center distance and the maximum center distance are engaged with the pin row, the meshing characteristics of the imported gear are better than those of the domestic gear, and when the minimum center distance is used, the meshing behavior of the imported gear is better than that of the domestic gear. The fluctuation and peak value of tooth surface contact stress of imported gear are larger than that of domestic gear, but the fluctuation and peak value of tooth root bending stress are smaller than that of domestic gear. (4) the experimental piece of tooth rail wheel is manufactured according to the tooth profile of imported tooth rail wheel. After the use of coal mine, its life is much higher than the original domestic gear rail wheel.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD421.6
本文编号：2267657
[Abstract]:The traction mode of modern shearer is mainly non-chain traction of tooth rail pin rail, the gear rail wheel undertakes the important task of transmitting torque and driving shearer walking, and it is one of the key parts of the haulage mechanism of shearer. With the increasing power of shearer, the fuselage is getting heavier and heavier, the load of the gear rail wheel is increasing, and its service life is generally shortened. In this paper, theoretical analysis and finite element method are used to simulate and compare the meshing characteristics of domestic and imported gear rail wheels with pin row at different center distances. The main research works are as follows: (1) the constraint relation of "three machines" of shearer, conveyer and hydraulic support is studied by using the method of theoretical analysis, and it is concluded that the gear rail wheel should adapt to the variable center distance. (2) Induction and analysis of the malfunctions of the existing 147mm pitch gear in operation. The results show that the mesh surface of the existing 147mm pitch gear is short, and the tooth profile curve is unreasonable. The thin tooth root is the problem of tooth shape. (3) the finite element model of the gear rail wheel made in China and the imported gear meshing with the pin are established and compared with each other by using ABAQUS software. The results show that when the standard center distance and the maximum center distance are engaged with the pin row, the meshing characteristics of the imported gear are better than those of the domestic gear, and when the minimum center distance is used, the meshing behavior of the imported gear is better than that of the domestic gear. The fluctuation and peak value of tooth surface contact stress of imported gear are larger than that of domestic gear, but the fluctuation and peak value of tooth root bending stress are smaller than that of domestic gear. (4) the experimental piece of tooth rail wheel is manufactured according to the tooth profile of imported tooth rail wheel. After the use of coal mine, its life is much higher than the original domestic gear rail wheel.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD421.6
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1 张永权;重型采煤机齿轨轮啮合研究[D];西安科技大学;2015年
，本文编号：2267657
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