共查询到20条相似文献,搜索用时 31 毫秒
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针对煤炭快速定量装车站称量系统的结构形式和称量要求,结合相关国家标准和规范,提出基于集成检定的装车站称重系统现场检定方法及注意事项,并对装车站称重系统称量精度进行了复验,为装车站称重系统现场检定提供了方法依据。 相似文献
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现有轨道称重方式,大都是采用框架结构秤体的形式,一般都需要基础安装,土建安装工程量大、周期长且投入成本大。对正在使用或使用频繁的轨道,无法进行改造、安装而放弃,致使不少企业的这一工序无法进行称重计量。无秤台连轨式轨道衡的研制与应用解决了此难题。无秤台连轨式轨道衡的称重传感器安装在钢轨内侧,不需对称重轨的基础进行改动,只需将原轨道压块拆除,即可安装称重设备。安装快捷、轻便、维护方便、安装时间短且工作效率高。 相似文献
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本文简捷地介绍了我们应用多项自主专利和发明专利技术成功研制的100吨无基坑不断轨复合式轨道称量系统,其较好地解决了矿山采矿装车计量问题过程中的一些经验与体会,与同行交流, 相似文献
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系统介绍了应用钢轨塞入式称重传感器,设计无基坑不断轨煤塔秤。同时应用计算机技术,借助开关量实现了煤塔秤计量的无人值守。 相似文献
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本文介绍了一种对皮带称重式给料机进行定量控制技术,实现散状物料快速装车的设计方案,广泛适用于煤炭、冶金、化工和建材等行业。 相似文献
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液化石油气出厂的装车安全与准确称重非常重要。文章基于数字汽车衡称重技术,通过可编程控制器、数据采集卡、电脑软件系统等与装车设备配套,实现对八路液化石油气槽罐车自动装车、称重和安全监控,具有一定的参考应用价值。 相似文献
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2010年4月17日,杭州市科学技术局受浙江省科技厅委托,组织了由杭州钱江称重技术有限公司承担完成的国家火炬计划《800吨无基坑复合式不断轨轨道称重装置》项目验收会。 相似文献
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为了研究钢轨波磨对扣件弹条的最大等效应力的影响,以高速铁路使用福斯罗扣件为研究对象,采用有限元软件建立扣件系统有限元模型,采用非线性接触理论,研究不同波磨状态对弹条最大等效应力影响规律,并验证模型。结果表明:弹条与其周围部件之间的接触刚度对弹条的最大等效应力、扣压力与弹条位移没有明显的影响;随着波磨比例系数的增加,弹条后端最大等效应力和应变以高频成比例增大,明显加剧了扣件弹条的疲劳破坏。 相似文献
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I. A. Vorob’ev 《Russian Engineering Research》2011,31(9):838-841
An integrated approach to extending the life of steel rail and the associated roadbed components is considered. In this approach,
the structural state and mechanical properties are taken into account. 相似文献
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桥式起重机是工业生产的重要工艺设备,广泛应用于制造、建筑、冶金、电力、物流等行业,因使用年限和使用的频繁程度等原因,桥式起重机的大、小车轨道会有不同程度的啃轨现象发生.通过不同检测仪器进行定量分析论证和采用合理的维修方法,控制维修安装调试过程的质量,适当的跟踪服务,可以改善桥式起重机运行中的大、小车啃轨现象,延长其使用寿命,充分发挥其使用效能.对啃轨现象进行了基理分析,并对维修改造的施工方案、整改措施给出建议. 相似文献
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The process design of hot forging, asymmetric to symmetric rib-web shaped steel, which is used for the turnout of express
rails has been studied. Owing to the great difference in shape between the initial billet and the final forged product, it
is impossible to hot forge the rail in a single stage operation. The numerical simulation for hot forging of asymmetric shape
to symmetric shape was carried out by using commercial FEM code, DEFORMTM-2D. For comparison with the simulation results,
a experiment of flow analysis using plasticine was also carried out. The results of the flow experiment showed good agreement
with those of the simulation. 相似文献
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An investigation has been made how wheel/rail adhesion varies and how this may be related to railhead contamination. Experiments with oils and water deposited on rails have been carried out. In dry weather adhesion depends on the quantity of oil present, which normally is so small it affects friction by a boundary lubrication mechanism. Evidence suggests that water reduces adhesion from two causes. On debris free rails it acts as an additional boundary lubricant. With debris present it forms a low shear strength mixture which, in minimally wet conditions, remains on the wear band where wheels contact the rail. In steady rain the debris mixture is squeezed aside and adhesion is possibly improved. In dry weather, debris particles have apparently little influence on the overall adhesion coefficient. 相似文献
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The effect of a scratch formed on the running surface of a curved rail, due to the slide of a locomotive wheel, on the formation and evolution of rail corrugation is investigated in detail with numerical methods when a wheelset is steadily and repeatedly curving. In the calculation we consider a combination of Kalker’s rolling contact theory with non-Hertzian to be modified, a linear frictional work model and a vertical dynamics model of railway vehicle coupled with a curved track. Also the influence of different speeds of wheelset curving through the scratch on the development of the corrugation is taken into account. The numerical results indicate that a scratch causes strong contact vibration between the wheel and rail, and initiation and development of rail corrugation under the condition of steady creepage occurring between the wheel and curved rail. The wave-length of the corrugation depends on the speed of wheelset curving and the natural frequencies of the track. 相似文献