Paving machine capable of spraying a liquid binding material

摘要

The present invention relates generally to paving machines capable of spraying a liquid binding material in the form of an emulsion on the road surface prior to the application of a hot asphaltic bituminous concrete paving material. The paving machine including a self-propelled chassis having a hopper and a paving material accumulator on the front end for receiving paving material, a transversely extending spray bar at the rear of the chassis for spraying the liquid binding material on the surface of the road bed, a conveyor for conveying the paving material from the hopper to a discharge location to the rear of the spray bar, the conveyor including two or more conveying augers mounted in auger troughs, and auger covers from the accumulator to the discharge location, which cover reduces heat loss from the paving material. Additionally, a heating system is provided for directing hot engine exhaust gases beneath the covers initially for pre-heating and also to prevent the paving material in the troughs below the covers from cooling down once the paving operation has commenced.