The Trucklift slope hoisting system is an innovative transport technology for open-pit mines, and it considerably accelerates and cheapens transport from mines.
When a truck drives onto or off the platform at the lower loading station in the Trucklift slope hoisting system with varying profile of track, the platform motion influences the operation of the Trucklift slope hoisting system, and the configuration of inclined ropes hitched to the platform is varied.
In order to estimate the movement of platform at the lower loading station when a truck drives off or onto the platform, the movement of the truck on the platform and the lower loading station and the effect of sagged inclined ropes hitched to the platform should be considered simultaneously. The platform motion is related to not only the profile of track and parameters of truck and platform, but also the parameters of sagged inclined ropes hitched to the platform.
Kim Kwang Hyok, a researcher at the Faculty of Mining Engineering, has investigated the platform motion with consideration of sagged inclined ropes when a truck drives off or onto a platform at the lower loading station in the Trucklift slope hoisting system with varying profile of track. He proposed a system of non-linear equations to furnish an explicit solution for extensible sagged inclined ropes with edges on the inclined track, simulated platform motion by using the ADAMS software, and modeled the sagged inclined ropes hitched to the platform as a flexible body with consideration of elasticity and bend.
The simulation result shows that the displacement of platform is not considerable in comparison with the diameter of a tire, and proper design of a lower loading station enables safe movement of trucks on the platform without arresters.
You can find the details in his paper “Platform Motion at Lower Loading Station in Trucklift Slope Hoisting System with Varying Profile of Track” in “Journal of Mining and Environment” (SCI).