Finishing machine with a weighing device for the asphalt

A finishing machine for carrying asphalt material and for laying asphalt surfaces on the ground therefrom comprising:

• a frame;
• a hopper for storage and distribution of the material secured to the frame;
• a conveyer secured to the frame for conveying the material from the hopper;
• a distribution auger located at an output end of the conveyer for receiving the material from the conveyor output and depositing the material on the ground;
• a shearing device located adjacent the auger for compressing the deposited material against the ground, said conveyer comprising
• a pair of endless chains;
• pulleys carrying the chains;
• transversal splines connecting the chains for transporting the material from the hopper;
• a plurality of fixed plates anchored to the frame between the chains for supporting the material thereon;
• a weighing device secured to at least one of said plurality of plates for providing a weight signal indicative of the weight of the material thereon;
• a controller being responsive to the weight signal for producing an indication of the amount of material deposited on the ground at time intervals which are a function of the angular speed of the pulleys, such that at least two successive weighings take place after all the weighed material is unloaded from the weighing device;
• and
• a width detector for sensing the width of the asphalt layer distributed by the shearing device and providing a width signal, said controller being responsive to the width signal, such that the resulting information is the weight of the asphalt distributed in an area of a predetermined stretch of road.