Arch back dragline bucket and work machines, systems, and assemblies thereof

Abstract

A dragline bucket can comprise a bottom wall; a first sidewall defining a first upper edge; a second sidewall opposite the first sidewall defining a second upper edge; a first forward-facing projection on a first side of the dragline bucket; a second forward-facing projection on a second side of the dragline bucket opposite the first side; a lip assembly at a front of the bottom wall; and an arm extending from the first side to the second side of the dragline bucket, a distal end of the arm being at a height greater than a height of respective first and second upper edges of the first and second sidewalls. In a side elevational view of the dragline bucket, the arm is tilted away from the rear wall at an angle of from 17.5 to 22.5 degrees relative to a vertical plane extending through a forward-most edge of the arm.

1 . A dragline machine comprising:
 a boom;   a rigging assembly operatively coupled to the boom via plurality of ropes; and   a fabricated dragline bucket having an inner working volume, the fabricated dragline bucket including:
 a bottom wall, 
 a first sidewall extending from the bottom wall and defining a first upper edge, the first sidewall having a window portion having a single uniform plate thickness, 
 a second sidewall opposite the first sidewall, extending from the bottom wall, and defining a second upper edge, the second sidewall having a window portion having the single uniform plate thickness, 
 a first forward-facing drag lug on a first side of the fabricated dragline bucket, 
 a second forward-facing drag lung on a second side of the fabricated dragline bucket opposite the first side, 
 a lip assembly at a front of the bottom wall, the lip assembly having a plurality of ground engaging tools extending downward and away from the bottom wall of the fabricated dragline bucket, 
 an arm in the form of an arch extending from the first side of the fabricated dragline bucket to the second side of the fabricated dragline bucket, a distal end of the arm being at a height greater than a height of respective first and second upper edges of the first and second sidewalls, and 
 one or more dump anchors each having a connection interface, each of the one or more dump anchors being welded to an upper surface of the arm, 
   wherein each of the first and second forward-facing drag lugs has an attachment point,   wherein in a side elevational view of the fabricated dragline bucket, the arm is tilted away from the rear wall at an angle of from 17.5 degrees to 22.5 degrees, inclusive, relative to a vertical plane extending through a forward-most edge of the arm,   wherein a portion of the arm overlaps a portion of the lip assembly in a vertical direction, and   wherein the forward-most edge of the arm does not overlap the attachment points of the first and second forward-facing drag lugs in the vertical direction.   
     
     
         2 . The dragline machine according to  claim 1 , wherein the angle is 20 degrees relative to the vertical plane extending through the forward-most edge of the arm. 
     
     
         3 . The dragline machine according to  claim 1 ,
 wherein in the side elevational view of the fabricated dragline bucket, the first forward-facing drag lug extends in a forward direction more than each of the arm and the lip assembly, and   wherein in the side elevational view of the fabricated dragline bucket, the second forward-facing drag lug extends in the forward direction more than each of the arm and the lip assembly.   
     
     
         4 . The dragline machine according to  claim 1 , wherein the fabricated dragline bucket further includes a cutout portion between the arm and each of the first and second forward-facing drag lugs. 
     
     
         5 . The dragline machine according to  claim 1 , wherein the fabricated dragline bucket has a weight distribution from teeth to heel with a balance of 55% to 58% on the teeth and 42% to 45% on the heel. 
     
     
         6 . The dragline machine according to  claim 1 , wherein the fabricated dragline bucket has the following dimensions:
   FH/AH=0.39 to 0.49 and FH/AL=0.27 to 0.37, where   FH is defined as a vertical distance from a first horizontal plane extending through the base to a second horizontal plan extending through a portion of the first and second upper edges,   AH is defined as a vertical distance from the second horizontal plan extending through the first and second upper edges to a third horizontal plane above the second horizontal plane that passes through a base portion of the arm, and   AL is defined as a horizontal distance from a sixth vertical plane extending through a portion of the arm to the second vertical plane extending through the upper capacity point.   
     
     
         7 . A dragline bucket comprising:
 a bottom wall;   a first sidewall extending from the bottom wall and defining a first upper edge;   a second sidewall opposite the first sidewall, extending from the bottom wall, and defining a second upper edge;   a first forward-facing projection on a first side of the dragline bucket;   a second forward-facing projection on a second side of the dragline bucket opposite the first side;   a lip assembly at a front of the bottom wall, the lip assembly having a plurality of ground engaging teeth;   an arm in the form of an arch extending from the first side of the dragline bucket to the second side of the dragline bucket, a distal end of the arm being at a height greater than a height of respective first and second upper edges of the first and second sidewalls; and   one or more dump anchors each having a connection interface, each of the one or more dump anchors being welded to an upper surface of the arm,   wherein each of the first and second forward-facing projections has an attachment point,   wherein in a side elevational view of the dragline bucket, the arm is tilted away from the rear wall at an angle of from 17.5 degrees to 22.5 degrees, inclusive, relative to a vertical plane extending through a forward-most edge of the arm, and wherein the dragline bucket has the following dimensions:   FH/AH=0.39 to 0.49, and   FH/AL=0.27 to 0.37, where   FH is defined as a vertical distance from a first horizontal plane extending through the base to a second horizontal plan extending through a portion of the first and second upper edges,   AH is defined as a vertical distance from the second horizontal plan extending through the first and second upper edges to a third horizontal plane above the second horizontal plane that passes through a base portion of the arm, and   AL is defined as a horizontal distance from a sixth vertical plane extending through a portion of the arm to the second vertical plane extending through the upper capacity point.   
     
     
         8 . The dragline bucket according to  claim 7 ,
 wherein a portion of the arm overlaps a portion of the lip assembly in a vertical direction, and   wherein the forward-most edge of the arm does not overlap the attachment points of the first and second forward-facing projections in the vertical direction.   
     
     
         9 . The dragline bucket according to  claim 7 ,
 wherein the first sidewall has a window portion having a single uniform plate thickness, and   wherein the second sidewall has a window portion having the single uniform plate thickness.   
     
     
         10 . The dragline bucket according to  claim 7 , wherein the angle is 20 degrees relative to the vertical plane extending through the forward-most edge of the arm. 
     
     
         11 . The dragline bucket according to  claim 7 ,
 wherein in the side elevational view of the dragline bucket, the first forward-facing projection extends in a forward direction more than each of the arm and the lip assembly, and   wherein in the side elevational view of the dragline bucket, the second forward-facing projection extends in the forward direction more than each of the arm and the lip assembly.   
     
     
         12 . The dragline bucket according to  claim 7 , wherein the dragline bucket further includes a cutout portion between the arm and each of the first and second forward-facing projections. 
     
     
         13 . The dragline machine according to  claim 1 , wherein the dragline bucket has a weight distribution from teeth to heel with a balance of 55% to 58% on the teeth and 42% to 45% on the heel. 
     
     
         14 . A method comprising:
 providing a dragline bucket, the dragline bucket including:
 a bottom wall, 
 a first sidewall extending from the bottom wall and defining a first upper edge, 
 a second sidewall opposite the first sidewall, extending from the bottom wall, and defining a second upper edge, 
 a first forward-facing drag lug on a first side of the dragline bucket, 
 a second forward-facing drag lung on a second side of the dragline bucket opposite the first side, 
 a lip assembly at a front of the bottom wall, the lip assembly having a plurality of ground engaging teeth, 
 an arm extending from the first side of the dragline bucket to the second side of the dragline bucket, a distal end of the arm being at a height greater than a height of respective first and second upper edges of the first and second sidewalls, and 
 one or more dump anchors each having a connection interface, each of the one or more dump anchors being welded to an upper surface of the arm, 
   wherein each of the first and second forward-facing drag lugs has an attachment point,   wherein in a side elevational view of the dragline bucket, the arm is tilted away from the rear wall at an angle of from 17.5 degrees to 22.5 degrees, inclusive, relative to a vertical plane extending through a forward-most edge of the arm,   wherein a portion of the arm overlaps a portion of the lip assembly in a vertical direction,   wherein the forward-most edge of the arm does not overlap the attachment points of the first and second forward-facing drag lugs in the vertical direction, and wherein the fabricated dragline bucket has the following dimensions:   FH/AH=0.39 to 0.49, and   FH/AL=0.27 to 0.37, where   FH is defined as a vertical distance from a first horizontal plane extending through the base to a second horizontal plan extending through a portion of the first and second upper edges,   AH is defined as a vertical distance from the second horizontal plan extending through the first and second upper edges to a third horizontal plane above the second horizontal plane that passes through a base portion of the arm, and   AL is defined as a horizontal distance from a sixth vertical plane extending through a portion of the arm to the second vertical plane extending through the upper capacity point.   
     
     
         15 . The method according to  claim 14 , further comprising:
 operating the dragline bucket to fill material in an interior volume thereof, said operating the dragline bucket including controlling the dragline bucket such that the ground engaging teeth contact the material before the arm contacts the material.   
     
     
         16 . The method according to  claim 14 , wherein the angle is 20 degrees relative to the vertical plane extending through the forward-most edge of the arm. 
     
     
         17 . The method according to  claim 14 ,
 wherein in the side elevational view of the dragline bucket, the first forward-facing drag lug extends in a forward direction more than each of the arm and the lip assembly, and   wherein in the side elevational view of the dragline bucket, the second forward-facing drag lug extends in the forward direction more than each of the arm and the lip assembly.   
     
     
         18 . The method according to  claim 14 , wherein the dragline bucket further includes a cutout portion between the arm and each of the first and second forward-facing drag lugs. 
     
     
         19 . The method according to  claim 14 , wherein the dragline bucket has a weight distribution from teeth to heel with a balance of 55% to 58% on the teeth and 42% to 45% on the heel.