Design of sorting devices in modern conditions

Abstract

The article analyzes the main problems in the design of shunting humps. In recent years, new railcars have appeared, track designs have changed, including those on shunting humps. In the design practice we can encounter the use of curves less than 200 m, laying single ordinary switches of the mark 1/9, reducing the distance between the top of the shunting hump and the first switch when designing the plan. These factors have a negative impact on the operation of gravity sorting yards. It is emphasized that the current methods are mainly focused on ensuring the rolling down of single “runners” and are not suitable for calculations when a group cut rolls down. When such a cut rolls down, its acceleration decreases on the high-speed section of the hump, which subsequently leads to a loss of braking efficiency and a decrease in the processing capacity of the hump. Also, a major problem is the separation of group cut of cars and single railcars on the switches. The methods of breaking down multi-railcar cut of cars when dividing the train set into parts and without subdivision of the groups are considered. The main negative factors affecting the rate of breaking down are identified. Since the main load is carried by the second braking position, it is proposed to increase its power by laying additional retarding mechanisms. It is concluded that the existing calculation methods do not allow us to take into account all the various factors that affect the quality of the shunting process.