排序方式: 共有29条查询结果,搜索用时 15 毫秒
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以武钢某自行走式台车炉台车部分设计计算为例,从影响自行走式台车炉台车的设计参数人手,结合台车各关键部件的设计计算方法,初步探讨了自行走式台车炉台车设计方法及要点,为此类型台车设计提供了理论依据和参考。 相似文献
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文章分析了抽油机用拉线式位移传感器在使用中存在的问题,构思出了辅助滚轮结构,并利用其受力特性的变化,设计了摇臂及螺柱等结构,巧妙地解决了传感器易损问题. 相似文献
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为提高气流平移步进型烤房的烟叶烘烤质量,根据该类烤房中帘子的位置将变黄区分为变黄前区和变黄后区;将定色区分为定色前区和定色后区。测试了不同烟车车距条件下空间位置上的温湿度分布,确定的影响温湿度分布的烟车车距在上述4个区的适宜调整范围依次为:30~35cm、25~30cm、15~20cm、10~15cm。在确定各区烘烤烟车车距的情况下,测试了帘子高度变化对空间位置上各点的温湿度影响,确定的影响气流走势、排湿是否顺畅和温湿度分布的最佳帘子高度为:变黄前区120cm,变黄后区90cm,定色前区60cm,定色后区50cm。实践证明,选择上述烟车车距和帘子高度能够提高烟叶烘烤质量,增加上等烟比例。 相似文献
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《Measurement》2016
New data filtering methods based on the Kalman filter concept are investigated for application to track geometry, where a track trolley is normally used to measure the track coordinates, cant and gauge, among others. Continuous as well as discrete measurements of the trolley are conceptually modeled, and the accuracy of the sampling scheme is also investigated. For this, a modified kinematic model of the track geometry involving transition and circular curves is proposed based on the tangential as well as normal acceleration, and both a nonlinear Extended Kalman Filter (EKF) and an augmented Unscented Kalman Filter (UKF) are applied to optimize the measured data. The efficiency and accuracy of the proposed models of EKF and UKF having a new kinematic equation is verified with ideal track geometry and with statistical methods including Root Mean Square (RMS). In addition, field measurement data are also considered to check the applicability of the models. Finally, future work on track geometry modeling based on a high-speed measurement vehicle is briefly outlined. 相似文献
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龙厦铁路北山隧道施工中,变截面钢模板液压衬砌台车,不仅很好地适用w=10设计断面衬砌要求;而且能用液压控制阀调整主缸、侧缸行程尺寸,满足w=0和w=20设计断面衬砌要求,操作简单方便,台车定位快捷;进而拓展到w=40设计断面衬砌时,采用顶模中间放置调整小钢模板和台车主架加高块措施,也能满足施工要求,方法简单快捷,节约了生产成本,取得了良好的经济效益。 相似文献
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直流架线式电机车是井下主要的运输设备,一般采用两台直流串激电动机作为牵引动力。为了减不起动电流,在刚起动时把两台电机串联,并在回路中串上最大的起动限流电阻。随着转速的增火,司机逐步把电阻切除,然后再把两台电机接成并联。这时叉必须把起动电阻接入,再慢慢切除电阻,直至电阻全部切除,电机车以全速运行。而制动采用能耗制动。就是将电动机从电源上断开。把它接成串激发电机并串入一定的制动电阻,通过调节制动电阻的大小来改变制动力矩, 相似文献
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