共查询到20条相似文献,搜索用时 187 毫秒
1.
《现代制造技术与装备》2017,(2)
岸边桥式起重机是工业生产的重要设备,主要用于港口码头装卸集装箱。岸桥的大车、小车在运行过程中,都会有不同程度的啃轨现象发生。通过检测仪器进行测量现场数据,分析车轮发生啃轨的原因,采用合理的维修方法,改善岸桥运行中的大车、小车啃轨现象,可延长其使用寿命,充分发挥其使用效能。 相似文献
2.
刘春美 《机电产品开发与创新》2013,(1):80-81,74
论文通过对大跨度桥式起重机小车啃轨现象的分析,采用缩小水平刚度允差、变频调速、增加滚轮导向等方法,避免了起重机小车啃轨的发生,提高了起重机车轮、轨道的使用寿命。 相似文献
3.
4.
桥式起重机啃轨与自动纠偏的研究 总被引:2,自引:0,他引:2
对桥式起重机的运行、啃轨现象、啃轨判断和啃轨原因进行了分析研究,阐述了解决桥式起重机啃轨的新系统——自动纠偏控制系统的方法、特点、功能和工作原理等。 相似文献
5.
铁路交通运输当中,通常需要使用桥式起重机对货物进行搬运,从而使得货物能够在规定的时间内放置到准确的地点,为铁路交通正常的运行提供重要帮助。而通过对桥式起重机运行的观察可以发现,其经常会出现车轮啃轨的问题,不利于整个桥式起重机的运行。基于此,本文以桥式起重机车轮啃轨为主要研究对象,通过对桥式起重机车轮啃轨危害的简单介绍,进而对引发原因及维修方法展开了深层次的探讨。 相似文献
6.
桥式起重机 (以下简称桥机 )在使用过程中常发生啃轨现象 ,严重时会使车轮与轨道剧烈磨损 ,缩短设备的使用寿命 ,车轮的运行阻力随即急剧增加 ,致使桥机的运行不平稳 ,发生扭摆并拌有响声 ,甚至会使桥机发生脱轨故障。邯钢线材厂高线车间 6号桥机承担加热炉上料工作 ,经常满负荷作业 ,使用频率较高。由于大、小车车轮同时发生严重的啃轨现象 ,新换的车轮在使用仅 4 5天后就需要更换 ,致使生产不能正常进行 ,工人维修作业量加重 ,备件费用增高 ,有时还造成大、小车运行电机烧毁和断轴事故等。1 啃轨原因分析1 1 车轮安装不当 (1)车轮的… 相似文献
7.
文章通过分析桥式起重机在“啃轨”现象的原因,从不同方面分析桥式起重机“啃轨”的处理方法,以减少起重机工作时啃轨现象的发生。 相似文献
8.
9.
10.
对桥式起重机车轮啃轨的原因和表现形式进行了分析,总结出了相应的改进措施.并根据实践制定了处理车轮啃轨问题的切合实际的维修原则. 相似文献
11.
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
12.
本文叙述了一种应用于水泥行业的定量装车系统及控制技术。不断轨称重轨在集装箱定量装车系统称重中的应用,解决了用户生产过程中的需求,投资少、工期短、见效快,达到了比较满意的效果。 相似文献
13.
14.
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
15.
16.
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
17.
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
18.
19.
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