Unloading trucks bringing bulk material to site
Truck unloaders allow tippers to discharge close to the entry of a site or even outside the site, speeding turnaround. The unloader can feed transfer conveyors or a stacker conveyor, minimising the need for haul roads within the site.
Bulk material brought to site or crushed and screened from on site materials can be stockpiled using a stacker. These can be readily moved about the site as required, and can also be used for placing materials in areas than cannot be safely reached by dumpers.
The belt on a Telebelt is bi-directional, so that the telescopic belt can be used to draw excavated material from a basement and load tippers on the street, avoiding the need for a ramp and wheel wash.
Where there is insufficient room on site for using dump trucks or where the congestion would be unacceptable, mobile and portable transfer conveyors can be used for moving bulk material on site. Conveyors can also be used for transferring material in environmentally sensitive areas, or placing material in areas where it is unsafe to have mobile equipment working e.g. close to the edge of an excavation.
Conveyors can also be considered for transferring spoil off site to a suitable transfer or disposal location where having tippers access the site through unsuitable local streets would cause significant disturbance to residents.
Often the ground conditions mean that a wheel loader cannot get close enough to safely backfill behind a retaining wall. A Telebelt can set up away from the wall and close to a stockpile of backfill material. It can cover a long section of wall before relocating, minimising the number of stockpiles required.
A Telebelt can place concrete across the full width of a tracked or rail-mounted paver and maintain a high feed rate. There is no disturbance to reinforcing mesh.
Telebelts can also be used to feed the hopper of a slipform machine, and have been used to feed the hopper from a different ground level where it was impractical to block a lane of traffic for an agitator.
Conveyors can handle unpumpable concrete such as RCC. Conveyors have routinely been used around the world for decades on RCC dam projects where high transfer rates and reliability are required.
The practical transfer rates of conveyors are significantly greater than can be achieved with a concrete pump, meaning that generally fewer machines are required or placement time is reduced. Mobile conveyors are reliable in prolonged operation, and have proven themselves in ship loading applications. This means that there is less chance of a breakdown disrupting a large pour. The transfer rates mean that multiple agitators can back up to a conveyor feed hopper. There is also less segregation in belt transfer than in a pump, and stiff concrete mixes can be handled with a belt.
Where multiple large diameter culverts are installed, backfilling is beyond the reach of conventional earthmoving equipment. A telescopic conveyor can accurately place backfill material and avoid the risk of damaging any geotextiles or barriers used behind the culvert.
Telebelts come into their own where there are wide trenches with multiple pipes to be backfilled, underground water or other storage to be covered or geotextile that can be damaged by machine movement.
Sandbags are sometimes used as formwork in applications where conventional formwork is impractical e.g. around pipes. Sandbags can be transferred by conveyor, providing a practical, safe and productive solution to a problem that might otherwise require craneage or manual handling.
Applications include backfilling tailings dams, loading train conveyors from stockpile, building and drawing down on temporary stockpiles, and more.
Applications include placing unpumpable concrete, placing bulk materials in areas with no or limited direct access, and more.
MCS has Australia-wide experience in loading a range of bulk materials from general purpose wharves using mobile conveyors.
This equipment suits both fixed and short-term applications, and is as transportable as mobile crushers and screens.
Mobile conveyors are the ideal solution for backfilling over geotextiles without compromising their integrity, and are highly productive.
Commercial and domestic building sites regularly use mobile conveyors to place backfill and other materials in areas with restricted or no vehicle access.
