Industrial mining is inextricably linked with railways. Starting from the earliest stages of development of the mining industry, the problem of transporting large volumes of heavy material showed that its solutions are developing into the railway transport infrastructure that we know today.
But if the basic principles of railway transport remain unchanged from the moment they are adopted at the dawn of the industrial revolution, then the processing of goods, and especially bulky are in constant movement. To accelerate the unloading of material with varying degrees of success, wagons were developed with sides or bottoms that can be open to drop the load.
Currently, the Swedish specialized carrier of raw oil Kiruna Wagon has developed a universal light cargo car and the unloading method that maximizes the useful load, increases the efficiency of transportation, accelerates unloading time and reduces the cost of delivery to 15 percent.
Kiruna Wagon used ultra -high and wear -resistant steel from the Swedish manufacturer SSAB to develop its Helix Dumper system.
We have been developing the system since 2010, explains Fredrick Kangas, managing director of Kiruna Wagon.
“ our client needed a system that could transport iron ore from its terminal in Sweden to Norway. We wanted the system to be as effective and economical as possible. We could not supply this raw materials without high -strength steels , ”said Fredrick Kangas.
Kiruna Wagon has developed the concept of the rotary unloading system, which is a stocking mechanism of tipping around the car with an automated compartment of the cargo compartment from the chassis.
The “capture wheel” on the upper part of each car is connected to a corkscrew or “spiral” structure and gradually tilts the car to 148 degrees. This allows you to distribute a useful load from the curved body of the car, when the train continues to move through the unloading station, without losing the initial speed.
The overturning mechanism automatically determines the complete emptying of the car and install it back on the chassis. There is no need to stop the train, which sharply increases the unloading rate, which, according to Kiruna Wagon, can reach 25,000 tons per hour - twice as much as more ordinary wagons and unloading systems.
Designers of the unloading system and a carriage park used the advanced high -strength strenx and Hardox stamps developed by SSAB. Both stamps are hardened by repeated heating, and then the fast is cooled in water, oils or inert gases under hard control.
