Conveyor Structure

What it is

Conveyor structure is the steelwork that carries idlers, pulleys, walkways, hoods and drives — stringers, trestles, portals, galleries and modular frames. In South African plants it ranges from light channel stringers on short feeders to heavy truss galleries spanning roads and rail. Structure design must handle belt tension reactions, wind, seismic considerations where required, maintenance access and future expansion.

Fabrication quality, corrosion protection (paint or galvanising) and bolted versus welded joints affect both life and how easily sections can be replaced during shutdowns. Many sites inherit mixed generations of structure; upgrades often include walkway compliance, kick plates, pulley frames and drive towers rather than a full greenfield gallery.

Provide length, belt width, approximate height, ground conditions and whether you need design responsibility or fabrication-to-drawing when you submit a structure enquiry. Photos and GAs dramatically improve quote quality. Note any existing survey grid or plant north reference so new steel lands true to the belts it must support.

Use cases

Structure is ordered for new conveyors, extensions to reach new stockpiles, replacement of corroded or overloaded frames, and safety upgrades to walkways and handrails. Plants also buy modular stringer sections to standardise spares. Temporary structure sometimes supports bypass conveyors during major outages.

• Stringer and idler frame replacement — restore geometry after years of corrosion or impact
• Gallery and trestle projects — elevated conveyors over plant roads
• Drive and take-up towers — stiff support for high belt tension
• Walkway and access upgrades — safer inspection routes for maintenance crews

Clarify whether civil bases exist or form part of another contract. Interface gaps between steel and civil scopes are a frequent cause of site delays on South African projects. If the structure must carry hoods, cable racking or dust ducting, list those loads — otherwise fabricators price bare stringers and extras appear as variations after award.

For brownfield work, note live-plant constraints: night shifts only, crane reach limits, and whether existing conveyors must keep running beside the new steel. Those constraints change erection methodology and cost more than the tonnage of steel alone.

Industries

Mining houses and quarries commission the largest structural packages. Cement, power stations and ports run long galleries that need wind design and reliable access. Process plants and warehouses use shorter structures but still require guarding and load-rated supports for drives and take-ups.

Coastal corrosion and Highveld UV both punish coatings; specify environment clearly. Underground structure faces transport constraints and different support methods. Fabricators with mine project experience understand drawing approvals, ITPs and site installation sequencing under permit-to-work systems. Smaller industrial sites may prefer modular bolted kits that local boilermakers can modify without waiting on a full project design office.

Why it matters

Weak or misaligned structure causes belt mistracking, idler edge wear and unsafe access. Corroded walkways create serious incident risk. Investing in sound steelwork protects people and the rotating components mounted on it. Geometry errors of a few millimetres per bay accumulate into tracking problems that no amount of training idler adjustment will permanently cure.

Structural quotes vary widely with design responsibility, steel grade, coating system and installation labour. State the scope boundaries so suppliers price the same work. Conveyor Quotes helps you reach fabrication and turnkey partners; select turnkey projects as well if you need design, steel and mechanical installation under one coordinated offer. Clear photos of corrosion and bent frames help suppliers distinguish repair patches from full bay replacement.