Dragline bucket

Abstract

A dragline bucket comprises a base member, a first side member extending from the base member and including a first top edge, a second side member extending from the base member, and a rear member extending from the base member and including a second top edge, a mouth for receiving material into the bucket, and a first beveled wall extending from the first side member forming a first compound angle with the base member and a second beveled wall extending from the rear member proximate the first beveled wall forming a second compound angle with the base member.

What is claimed is: 
     
       1. A dragline bucket comprising:
 a base member extending along an X-axis, a first side member extending from the base member and including a first top edge, a second side member extending from the base member in an opposing manner to the first side member defining a distance from the first side member to the second side member, and a rear member extending from the base member and including a second top edge; 
 wherein the first side member, second side member and base member define a mouth for receiving material into the bucket; and 
 a first beveled wall extending from the first side member and a second beveled wall extending from the rear member proximate to intersect the first beveled wall and form an obtuse angle between the first beveled wall and the second beveled wall, the first beveled wall forming a first compound angle with the base member and the second beveled wall forming a second compound angle with the base member that is different than the first compound angle such that wherein the first beveled wall and the second beveled wall join together and each angle inward towards the X-axis to overhang the base member. 
 
     
     
       2. The dragline bucket of  claim 1 , wherein the first beveled wall includes a third top edge connected to the first top edge of the first side member and the second beveled wall includes a fourth top edge connected to the second top edge of the rear member. 
     
     
       3. The dragline bucket of  claim 2 , wherein the first beveled wall is connected to the second beveled wall, and the third top edge of the first beveled wall is connected to the fourth top edge of the second beveled wall. 
     
     
       4. The dragline bucket of claim  2  1, wherein at least a portion of the rear member forms a third angle with further comprising a trunnion attachment structure mounted on a trunnion attachment wall extending between the first beveled wall and the base member. 
     
     
       5. The dragline bucket of  claim 1 , wherein the bucket defines a fill direction and a center of gravity and a Cartesian coordinate system including a the X-axis, a Y-axis, a the Z-axis and an origin positioned at the center of gravity, wherein the X-axis is aligned with the fill direction of the bucket, and the first beveled wall forms a first compound angle includes with the base member, the first compound angle including a first component angle projected along the Y-axis onto the X-Z plane and a second component angle projected along the X-axis onto the Y-Z plane, and the first component angle ranges from 50 to 85 degrees and the second component angle ranges from 50 to 80 degrees. 
     
     
       6. The dragline bucket of  claim 5 , wherein the second beveled wall forms a second compound angle includes with the base member, the second compound angle including a third component angle projected along the Y-axis onto the X-Z plane and a fourth component angle projected along the X-axis onto the Y-Z plane, and the third component angle ranges from 60 to 80 degrees and the fourth component angle ranges from 50 to 85 degrees. 
     
     
       7. The dragline bucket of  claim 4 , wherein the bucket defines a fill direction and a center of gravity and a Cartesian coordinate system including a the X-axis, a Y-axis, a Z-axis and an origin positioned at the center of gravity, wherein the X-axis is aligned with the fill direction of the bucket, and the third angle the rear member forms with the base member is projected onto the X-Z plane along the Y-axis and ranges from 60 to 80 degrees. 
     
     
       8. A dragline bucket comprising:
 a base member extending along an X-axis, a first side member extending from the base member and including a first top edge, a second side member extending from the base member in an opposing manner to the first side member defining a distance from the first side member to the second side member, and a rear member extending from the base member and including a second top edge; 
 wherein the first side member, second side member and base member define a mouth for receiving material into the bucket; and 
 a first beveled wall extending from the first side member and a first mitered wall extending from the first side member proximate below the first beveled wall and between the first beveled wall and the base member, the first beveled wall forming a first compound angle with the base member such that wherein the first beveled wall overhangs the base member and the first mitered wall forming a lower obtuse angle with the first side angles outward and away from the base member. 
 
     
     
       9. The dragline bucket of  claim 8  further comprising a trunnion attachment structure extending at least partially from mounted below the first beveled wall on the first mitered wall. 
     
     
       10. The dragline bucket of  claim 8 , wherein the bucket defines a fill direction and a center of gravity and a Cartesian coordinate system including a the X-axis, a Y-axis, a Z-axis and an origin positioned at the center of gravity, wherein the X-axis is aligned with the fill direction of the bucket, and the first beveled wall forms a first compound angle includes with the base member, the first compound angle including a first component angle projected along the Y-axis onto the X-Z plane and a second component angle projected along the X-axis onto the Y-Z plane, and the first component angle ranges from 50 to 85 degrees and the second component angle ranges from 50 to 80 degrees. 
     
     
       11. The dragline bucket of  claim 10 , wherein the bucket defines a fill direction and a center of gravity and a Cartesian coordinate system including a X-axis, Y-axis, a Z-axis and an origin positioned at the center of gravity, wherein the X-axis is aligned with the fill direction of the bucket, and the lower obtuse angle is projected onto the X-Y plane along the Z-axis and the lower obtuse angle ranges from 150 to 170 degrees. 
     
     
       12. The dragline bucket of claim of  claim 11 , further comprising a second beveled wall connecting the first beveled wall to the rear member. 
     
     
       13. The dragline bucket of  claim 12 , further comprising a second mitered wall connecting the first mitered wall to the rear member. 
     
     
       14. The dragline bucket of  claim 13 , wherein the bucket is symmetrical about the X-Z plane. 
     
     
       15. The dragline bucket of claim 1, wherein the first beveled wall forms a first compound angle with the base member and the second beveled wall forms a second compound angle with the base member that is different than the first compound angle such that the first beveled wall and the second beveled wall overhand the base member. 
     
     
       16. The dragline bucket of claim 8, further comprising a second beveled wall extending from the rear member to intersect and join together with the first beveled wall, wherein the second beveled wall overhangs the base member. 
     
     
       17. The dragline bucket of claim 16, wherein the first beveled wall forms a first angle with the base member and the second beveled wall forms a second angle with the base member that is different than the first angle such that the first beveled wall and the second beveled wall each overhang the base member. 
     
     
       18. The dragline bucket of claim 1, wherein the rear member is orthogonal to the X-axis, the dragline bucket further comprising
 a trunnion attachment wall extending away from the first side member between the first beveled wall and the base member and forming an obtuse angle with the first side member; and   a trunnion attachment structure mounted on the trunnion attachment wall, wherein the trunnion attachment structure comprises a base plate; a pad extending from the base plate and defining a trunnion slot with a longitudinal axis that is parallel to the X-axis;   a pin aperture extending orthogonally to the trunnion slot; and   a pin disposed in the pin aperture.   
     
     
       19. The dragline bucket of claim 18, wherein the base plate of the trunnion attachment structure is substantially parallel with the trunnion attachment wall. 
     
     
       20. The dragline bucket of claim 8, wherein the rear member is orthogonal to the X-axis, the dragline bucket further comprising
 a trunnion attachment structure mounted on the first mitered wall, wherein the trunnion attachment structure comprises a base plate; a pad extending from the base plate and defining a trunnion slot with a longitudinal axis that is parallel to the X-axis;   a pin aperture extending orthogonally to the trunnion slot; and   a pin disposed in the pin aperture.   
     
     
       21. The dragline bucket of claim 20, wherein the base plate of the trunnion attachment structure is substantially parallel with the first mitered wall. 
     
     
       22. A dragline bucket comprising: a base member extending along an X-axis, a first side member extending from the base member and including a first top edge, a second side member extending from the base member, and a rear member extending from the base member and including a second top edge; wherein the first side member, second side member and base member define a mouth for receiving material into the bucket; a first beveled wall extending from the first side member and a first mitered wall below the first beveled wall and between the first beveled wall and the base member, wherein the first beveled wall overhangs the base member and the first mitered wall angles outward and away from the base member; and a trunnion attachment structure mounted on the first mitered wall. 
     
     
       23. The dragline bucket of claim 22, wherein the first mitered wall extends from the first side member towards the rear member and forms an obtuse angle with the first side member. 
     
     
       24. The dragline bucket of claim 23, wherein the trunnion attachment structure comprises a base plate; a pad extending from the base plate and defining a trunnion slot with a longitudinal axis that is parallel to the X-axis;
 pin aperture extending orthogonally to the trunnion slot; and   a pin disposed in the pin aperture.