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SERRUS
Page 56
Page 57
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Handling the hot stuff
Serrus is building a moving floor trailer equipped for handling very hot asphalt. The key design features are the heated bodywork and specially insulated Keith 'V' floor system. Although proven in the US, it will be the first European application for this sort of work.
Serrus has devised a sluice-gate valve near the tractor unit's tailpipe to direct exhaust gases through the body sides and out via openings over the front bulkhead. This maintains the load temperature up to the point of discharge into a waiting Barber Greene.
To enable the floor to unload, there are full length, flattish J-shaped temperature resistant glider strips, fitted between the sub-deck and V-planks. These neoprene-like bearings have to insulate and protect the planks, and be wear resistant.
The floor is swept clear using a moving bulkhead with tarp attached. It follows the load out and an efectrohydraulio winch returns it to the front.
In practice, the V floor's discharge rate can be controlled with consistency and is ideally suited to feeding a Barber Greene. The pump's oil flow determines the floor speed, and it will work anywhere between 40 litimin and 200 lit/min, Reduce the oil flow and the floor slows.
When a tipper is used, a driver and banksman combine to get the tip angle right without rushing it or overfilling. If excessive side-spill occurs, the body is dropped to slow the discharge.
Moving floors can give a regulated outflow, but if oversupply occurs, the driver can reverse it remotely, to walk the material away from the Barber Greene.
The key is to determine optimum feed settings with minimal overspill, and Serrus has now reached this stage. The concept could be quite far reaching; one particular customer has registered the need for 100 such vehicles, while another large national group is looking for a version that can deliver both dried products as well as asphalt.