铁路线路（Railway line）.docVIP

铁路线路（Railway line） Track inspection knowledge five Complete the steep change from high to low, the longest range but also 8.7m, 5m, general in 4; the lowest level, the highest value is not overrun, only one had reached 1; only in this situation exists when a single strand of this disease. From this kind of disease location, the disease more than in the switch on. 1) measures and treatment method Through the summary and comparison, in the diagram of the disease is relatively easy to find, there is obvious characteristics, eliminate is relatively easy, but from these features, the disease is not easy to be found, on the one hand, the dynamic inspection data overrun on orbit inspection are not, these sites are not easy to be pay attention to; on the other hand, a small pit behind the small high short, usually hanging board, look at the site is generally not too obvious; and in third rail frog at level of sight is affected. This method of disease prevention is the most effective treatment, inspection and dynamic inspection on linear map on each kilometer carefully to find this type of check carefully after the mileage to the scene, combined with dynamic and static inspection, to eliminate them. 2) theoretical basis The above is found by comparing the rules below through the wheel load reduction rate of the load is defined to illustrate this linear inevitability which the reduction rate of wheel load. Wheel load reduction rate = /P? ? = P - P (P P left left or right)? = P - P (P P right right left) P - Instrumented Wheelset about static wheel load average. ? - Instrumented Wheelset reduction in load larger side. The vertical force of P left and P right - left and right under the dynamic force of wheel / rail. The qualitative analysis, it is easy to understand, by the hard wheel in high front reached the top of this process is a process of red, the highest point, in the role of gravity and spring, soon began to fall. In the process of movement, hard higher hardness and