Cable Belt Conveyors
Cable Belt is a unique conveyor design that is well suited for long distance conveyor applications
where vertical and horizontal curves are required. The ability to negotiate low radius curves by this
conveyor can reduce the costs of installation and civil works that are a major feature of large conveyor
systems. In addition, routes that would commonly be achieved by multiple conventional conveyors can often
be done by a single flight cable belt and the need for multiple transfers is eliminated, reducing material
degradation, transfer maintenance and often the sometimes installed system power.
The design differs to that of conventional conveyor designs. The conveyor belt is supported by two
endless wire rope cables, one on each side of the belt, in lieu of idlers. The belt has almost no tension
induced as it simply “goes along for the ride”. This type of design requires a special sort of belting
with a pre-formed shape. The belt is designed to be pre-formed or “dished” to maximize the amount of
material that can be carried while minimizing material spillage. The belt is more rigid across the width
than a conventional conveyor belt as it must support both its own weight and the material load.
Additionally, the belt is designed to deflect a specific amount under load according to the capacity and
characteristics of the material to be carried.
The drive cables not only support the belt but also provide the driving mechanism for the conveyor.
The ropes support both the carry and return sides of the belt. The ropes and belt are separated at the
discharge and tail/loading ends where they each wrap around their respective return pulleys or drums.
As the rope is the driven component, it wraps around a friction drive wheel that can be snubbed or
non-snubbed. Drive area location can vary in position as the conveyor profile dictates. Likewise, the
rope and belt tension areas vary in location along the conveyor’s length as the design requires and
multiple drive units can be used to minimize the peak tensions induced into the rope, thus minimizing the
rope size and other system components.