초록 ▼

A windrow pickup attachment for asphalt pavement laying apparatus provided with a feed hopper for receiving soft asphalt aggregate laid in a windrow in front of the apparatus. The attachment comprises an upwardly inclined chute hinged to a low lying hopper front wall and a flight conveyor overlying

A windrow pickup attachment for asphalt pavement laying apparatus provided with a feed hopper for receiving soft asphalt aggregate laid in a windrow in front of the apparatus. The attachment comprises an upwardly inclined chute hinged to a low lying hopper front wall and a flight conveyor overlying both chute and hopper. The flight conveyor is hinged to a relatively elevated hopper back wall. Skids support the lower forward end of the chute on the pavement. A chute conveyor support supports the lower forward end of the chute conveyor on the chute. Drive mechanism pivotally attached to the forward portion of the chute reciprocates the same, and hence the chute conveyor resting thereon, between lowered working and raised transport positions.

대표청구항 ▼

In asphalt pavement laying apparatus including a longitudinally aligned asphalt aggregate spreading unit and a hopper arranged for feeding aggregate thereto, the hopper including a high back wall, a low front wall, and on its bottom a longitudinally extending conveyor, a windrow pickup attachment co

In asphalt pavement laying apparatus including a longitudinally aligned asphalt aggregate spreading unit and a hopper arranged for feeding aggregate thereto, the hopper including a high back wall, a low front wall, and on its bottom a longitudinally extending conveyor, a windrow pickup attachment comprising in combination with the hopper: (a) a chute mounted pivotally at its rearward end adjacent the upper end of the front wall of the hopper and extending longitudinally forward thereof, (b) drive means interengaging the chute and hopper for pivoting the chute between a lowered, working position for receiving asphalt aggregate from a windrow, and a raised, transport position, (c) an elongated conveyor frame mounted pivotally at its rearward end adjacent the upper end of the back wall of the hopper and extending forwardly thereof over the hopper and chute, (d) an elongated endless flight conveyor supported at its longitudinal ends on the conveyor frame for longitudinal movement relative thereto and including a plurality of longitudinally spaced transverse flight members, the lower working stretch of the conveyor being arranged for movement in the rearward direction relative to the chute for moving asphalt aggregate from a windrow rearwardly up the chute and into the hopper, and (e) conveyor support means on the conveyor frame arranged for releasable and movable engagement with the chute for supporting the forward portion of the frame freely by the chute and for limiting movement of the frame and conveyor toward the chute during movement of the chute between said working and transport positions and for allowing movement of the frame and conveyor freely toward and away from the chute as the flights engage a windrow of asphalt aggregate.