We are a multidisciplinary engineering firm, focused on three key service areas within heavy industry:
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Trippers are widely used to deliver material from a yard or wharf conveyor to a stacker or shiploader. The design of the tripper should be integrated with the design of the yard or wharf conveyor because the optimum tripper profile depends on the belt tensions. The lift radius of the belt should be calculated at the head and tail ends of the yard conveyor for full, empty, start and stop conditions. Trippers should be profiled with a convex "buffer curve" near the toe to prevent edge buckling of the belt which results in spillage.
Steel wire ropes are complex structures whose behaviour is more akin to a mechanism rather than a simple structure. The mechanical properties of a steel rope result from the individual wires and their arrangement or construction. Unlike most other metallic components, rope wires are stressed alternately in tension, compression, torsion andshear. The wires and strands are designed to slide in realtion to each other, distributing the complicated applied stresses more effectively. Therefore, wire ropes require prudent inspection, maintenance, lubrication, and periodic replacement.
Many sites involved in mining and heavy industry own and operate a number of cranes and hoists, which are used to assist maintenance operations. Often these cranes are used infrequently, and as a result maintenance and inspection of this equipment can be overlooked. However a breakdown of one of these cranes, especially during critical maintenance operations can lead to lengthy delays and costly losses of production while the crane is repaired or an alternative found. Statutory compliance can also be important from a legal stantpoint. As a result, it is important for owners and operators of these cranes to be aware of the maintenance/inspection requirements for this equipment.
