Queensland Rail (QR) transports coal from Queensland coalmines to the coal ports in bottom dump rail wagons. Some coals have a propensity to be "sticky" which hinders their unloading and jackhammers are needed to vibrate the wagons to facilitate unloading.

Some merchants rented yard space from the railway to store, sell and distribute coal but others had their premises elsewhere, unloading their coal direct from the wagon to a cart for transport to its final destination.

The vibration coal unloading method and device for the coal hopper wagon are characterized in that the vibration coal unloading method for the coal hopper wagon comprises the steps that (1)...

2020年11月12日 · Thousands of wagons demanded efficient loading and unloading. Hence coal would normally be loaded by pouring into the top, leaving the characteristic humped shape. Unloading was accomplished tipping the wagon using a "wagon tippler". Knowing the equipment used and a web search brings up many designs over the years, including many modern versions.

The wagon tippling system is designed to unload materials like coal, ore, limestone, etc. from the open type railway wagons. It consists of a wagon tippler, the wagon positioning equipment, underground hopper (RCC type with suitable liner or structural steel fabricated

Depending on the railcar type, two basic techniques of wagon unloading are distinguished: self-unloading gravity method and unloading with specially designed wagon tipplers.

2002年1月1日 · Coals from some Queensland mines give varying degrees of problems with hangup in rail wagons during unloading at the ports. Jackhammers are currently used at the ports to vibrate the wagons...

Coal hang-up, resulting in wasted capacity, is a perennial inefficiency and topic of dispute. The excellent discharge characteristics of the material together with careful attention to door installations on the production line, contribute to a smoother unloading process and consequent improved unloading efficiency.

This paper presents the evolving developments and changing features of coal wagon design as used in the New South Wales Hunter Valley and also of two prototypes for use in Queensland. As mining techniques improved over time, the amount of coal mined grew.

Coal has been transported in many types of vehicles. Mostly, open wagons were used at first. The coal was hand or mechanically shoveled out of the wagon. Advances were made to speed up unloading times, by modifying vehicles with bottom discharge doors.