INVESTIGATION AND SUBSTITUATION OF DESIGN AND DYNAMIC PARAMETERS OF STEEPLY INCLINED CONVEYORS

Abstract

This paper examines the dynamic parameters of steeply inclined conveyors (SIC). The article provides an overview of the design of the steeply inclined conveyors for various operating conditions, in particular, the design of the steeply inclined conveyor with stationary pressure devices, with reference to the disadvantages of such an embodiment. The authors propose to perform the clamping elements of the SIC, moving synchronously with the tape of clamping circuit. The article presents the results of a comparison between designs of SIC with widespread stationary clamping devices and another one with moving clamping elements. The assessment was carried out according to the main limiting parameters of SIC for hourly cargo flows in the range of 1000 - 6000 t/h when using rubber cable belts with a speed of 3.15 m/s and lifting the rock mass with a bulk density of 2 t/m3 at an angle of 45º. The performed comparison is presented in the form of the ratio of the prospected hourly performance of the SIC with moving pressure elements to the same value data of the SIC with stationary pressure elements when using load-carrying belts of the same width (1200 - 2000 mm). Further important factors (the operation of conveyor belts in transitional curve sections, their deformation when the load is pressed, the relative slippage of the load-bearing and load-holding belts etc.) were evaluated only qualitatively, because of the lack of theoretical research and information on the practical operation of the SIC. As a result of the study some advantages of the SIC design with moving clamping elements were revealed.