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A cable conveyor uses steel cables to guide and support the belt, offering benefits such as higher payloads, reduced complexity, and tighter turning circles. It requires fewer support sets and can follow tighter bend radii than conventional conveyors, making it suitable for transport lengths up to 50km and installations on steep slopes. The preformed belt allows for a larger bearing area and less sideways wobble or deflection, resulting in an increase in load carrying capacity through turns.
A cable conveyor is a belt conveyor system that uses a pair of endless steel cables to both guide and support the belt and its load. This is in contrast to conventional conveyor systems where the belt itself is guided by a series of drive rollers and supported along its length by idler rollers. These cables support the belt on both its forward and return paths and separate from it only at the drive and tail ends of the conveyor. A cable haulage system offers a variety of benefits, including higher payloads, reduced complexity and tighter turning circles.
Cable conveyors have several unique and beneficial deviations from conventional belt conveyor design. The first, and perhaps most significant of these, is the conveyor belt drive system. A pair of endless steel cables, one on each side of the belt, are used to both support and operate the cable conveyor. A conventional system provides for the belt itself to be driven by a series of rollers which subject the belt to considerable stress with consequent wear and alignment problems.
Conventional conveyors also require sets of regularly positioned idlers to support the belt and its load. The cables that drive and support a cable conveyor require only two small guide pulleys in each set as opposed to the normally required three or four rollers. There are also typically less than half the number of support sets needed on a given length of cable conveyor resulting in lower installation and maintenance costs.
Given its unique drive and carrier design, this type of conveyor system uses a preformed belt that allows for a larger bearing area. It also means the belt is less prone to sideways wobble or deflection due to off-center loads or alignment issues resulting in less runout. Furthermore, the rope support system only requires tilting the support sheaves through bends and not the installation of additional rollers. This also has the effect of reducing turn induced belt deflection resulting in an increase in load carrying capacity through these turns.
The cable conveyor system is also capable of following a much tighter bend radius than a conventional conveyor with horizontal bends possible in 400 meters or less. These cable systems are suitable for transport lengths from just over half a mile (1km) to 31 miles (50km) and can easily be extended if required. They exhibit excellent medium load support characteristics with maximum loads in the region of 6,000 tons per hour. Cable conveyors are also particularly suitable for installations on steep slopes. The combination of low cost, low maintenance and route flexibility makes the cable conveyor an attractive and economical option for transporting material over long distances and in all terrain conditions.
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