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Dump truck accessory

  • US 4,790,715 A
  • Filed: 11/20/1987
  • Issued: 12/13/1988
  • Est. Priority Date: 04/15/1985
  • Status: Expired due to Term
First Claim
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1. A dump truck accessory for a dump truck having a vehicle frame with forward and rearward ends, and a truck box having forward and rearward ends, said truck boxes and said vehicle frames being pivotally connected adjacent their rearward ends whereby said truck box can pivot about a horizontal truck box axis from a lowered position to an elevated position;

  • said accessory comprising;

    an accessory frame comprising forward and rearward channel frames spaced apart and parallel to one another and extending transversely of said vehicle, a plurality of spacer frames extending between said channel frames;

    first and second conveyor rollers extending between said channels frames in spaced apart parallel relation to one another, said first and second rollers being rotatably mounted for rotation about roller axes extending in the direction of travel of said vehicle, each of said rollers having an outer cylindrical surface and annular groove in said cylindrical surface;

    an endless conveyor belt trained around said conveyor rollers, said belt having forward and rearward edges and having an endless rib trained around said conveyor rollers and protruding within said annular grooves of said conveyor rollers,conveyor power means connected to said first conveyor roller for driving said first conveyor roller and said conveyor belt;

    roller mounting means movably mounting said second conveyor roller to said accessory frame for adjustable movement toward and away from said first conveyor roller;

    roller adjustment means connected to said roller mounting means for causing selective adjustable movement of said second conveyor roller relative to said first conveyor roller;

    a forward attached to said forward channel frame and extending upwardly and forwardly therefrom;

    a rearward wall attached to said rearward channel frame and extending upwardly and rearwardly therefrom;

    first and second end gates spaced apart from one another and spanning the distance between said forward and rearward walls, each of said end gates having a lower edges and being movable from as lower position wherein said lower edge is closely adjacent said conveyor belt to an upper position wherein said lower edge is spaced upwardly from said conveyor belt;

    first and second manually operable gate actuating means attached to said first and second gates respectively for causing said gates to move between said upper and lower positions;

    an elongated front flashing member having an upper edge attached to said forward wall and having a lower edge resting on said conveyor belt on a line spaced inwardly from said forward edge of said conveyor belt,an elongated rear flashing member having an upper edge attached to said rearward wall and a lower edge resting on said conveyor belt on a line spaced inwardly from said rearward edge of said conveyor belt;

    hinge means pivotally connecting said forward wall to said truck box for pivotal movement about a horizontal accessory axis located rearwardly of said truck box axis,leveling link means having a forward end pivotally connected to said truck frame for pivotal movement about a first horizontal link axis located below said truck box axis, and having a rearward end pivotally connected to said accessory frame for pivotal movement about a second link axis located below said accessory axis, whereby said leveling link will maintain said accessory frame in a substantially constant level orientation in response to pivotal movement of said truck box between said lowered and elevated positions;

    flap extension means attached to said rearward end of said truck body and engaging said front wall to permit the contents of said truck box to be deposited on said conveyor with a minimum of spillage to the ground.

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