Concrete pumping apparatus
AssigneeWorthington S.p.A.
InventorEnos Fumagalli
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Abstract
This invention relates to an improved concrete pumping apparatus, in particular of the truck-mounted type and adapted to operate at low environmental temperatures. Said apparatus comprises means which define an essentially closed circuit for circulation of the cooling air of the auxiliary engine controlling the pumping group in heat exchange contact with apparatus components disposed in separate bays to be maintained within well defined temperature ranges above the temperature of the environment, and means for independently adjusting and maintaining the air temperature in each bay. The engine exhaust gases are used to preheat the casting tube.
Claims11
In an apparatus for pumping concrete, comprising a concrete loading hopper, pump means operably associated with the hopper for pumping concrete from the hopper and through a casting tube, and an internal combustion engine for operating the pump means, said engine being the source of a current of relatively warm air;
- the improvement which comprises containing means defining an enclosure wich encloses the pump means, the hopper and the engine, and further including sectional elements defining a plurality of adjustably intercommunicating bays within which the hopper, the pump means and the engine are separately disposed;
- duct means for controllably circulating the relatively warm air to the exterior surfaces of the hopper and the pump means, so that the relatively warm air is in indirect heat exchange therewith;
- and valve means for separately controlling the air flow rate to the hopper bay, the pump means bay and the engine bay so that the air temperatures in each bay may be independently adjusted and maintanined;
- whereby the apparatus is adapted to operate at low environmental temperatures.
Dependencies are inferred from the claim text.