Обґрунтування раціональної товщини обичайки і лобовини канатного барабана

Abstract

UA: Пропонується аналітична модель для визначення прогину лобовини переставної частини розрізного барабана шахтного підйомника під дією зусилля навитого каната. Модель побудована на основі теорії пружності. Результатами розрахунків обґрунтована рекомендація про те, що для мінімізації збільшення проміжку між частинами барабана від зусилля навитого каната треба в першу чергу збільшувати товщину обичайки.

EN: Double-ended lifting is often used in the mining industry. To change the horizon (hoisting height), it is necessary to change the working length of one of the ropes. The two-drum machines with a separate drum for each of the ropes are used for this purpose. One drum (jammed) is rigidly fixed to the shaft, and the second one (adjustable) is mounted on the bearings and is connected to the shaft by the decoupling device. Each drum is equipped with an individual braking device.

We consider a two-rope mine hoist with a split drum, which performs the same functions as a two-drum machine. In this mine hoist, the drum consists of two parts – a wide jammed part and a narrow adjustable part, with a clearance of 3 to 5 mm between them. The jammed part of the drum is used for winding and unwinding both ropes. This design allows a significant reduction of the physical dimensions and the metal capacity of the mine hoist. At the same time, it raises requirements for the rigidity of the drum, as during the operation of the machine, one of the ropes passes the split between the parts of the drum. The rigidity of the drum should be such that its deformation due to the force of the coiled rope could not lead to an increase in the clearance beyond the defined norm.