论文部分内容阅读
目前矿山广泛采用的电机车运输,其选型设计最一般的方法是根据重车上坡起动条件计算出列车矿车数和轮缘牵引力,查有关电机性能曲线得出电枢电流和机车运行速度,验算电机发热条件,最后验算机车制动距离。在现场工作中,由于运输线路、装煤点等的变更,也需要重新确定矿车数而后进行核算工作。然而,根据轮缘牵引力F利用电机性能曲线得出电枢电流I和机车运行速度V的方法显得繁琐。特别是在验算电机发热条件不合格时,必须重新查曲线多次。设计部门和现场有关技术人员都希望能有一个经验公式,利用电子计算器算出电枢电流和机车运行速度。这在手头一时没有曲线的情况下,经验公式显得尤为必要。因此,我们
At present, the most popular method of electric locomotive transportation used in mines is that the most general method of design selection is to calculate the number of trains and the traction of the rim according to the starting conditions of heavy truck uphill. Check the motor performance curve to find the armature current and locomotive running speed , Checking the motor heating conditions, the final inspection locomotive braking distance. In the field work, due to changes in the transportation lines, coal loading points, etc., the need to re-determine the number of cars and then accounting. However, the method of using armature current I and locomotive running speed V based on rim traction F using the motor performance curve becomes cumbersome. Especially in the inspection motor heating conditions unqualified, you must re-check the curve several times. Design department and on-site technical staff hope to have an empirical formula, the use of electronic calculators to calculate armature current and locomotive speed. Empirical formula is especially necessary when there is no curve on hand at this moment. therefore, we