Shovel with passive tilt control
First Claim
1. A bail assembly for a mining shovel, the shovel including a boom, a hoist rope passing over an end of the boom, a handle movable relative to the boom, a dipper coupled to an end of the handle, the bail assembly comprising:
- a bail including a first end, a second end, and a brace joint positioned between the first end and the second end, the first end configured to be pivotably coupled to the dipper;
an equalizer including an end pivotably coupled to the bail, the equalizer configured to be coupled to the hoist rope passing over the end of the boom; and
a pitch brace including a first end pivotably coupled to the brace joint and a second end configured to be pivotably coupled to the handle.
2 Assignments
0 Petitions
Accused Products
Abstract
A mining shovel adapted to dig a bank of material includes a boom having an end, a hoist rope extending over the end of the boom, an elongated member movably coupled to the boom, a dipper for engaging the bank of material, a bail assembly, and a pitch brace. The member includes a first end and a second end. The dipper is coupled to the second end of the member and includes a digging edge. The bail assembly includes a first end pivotably coupled to the dipper and a second end coupled to the hoist rope passing over the boom. The pitch brace includes a first end pivotably coupled to the bail assembly and a second end pivotably coupled to the member.
-
Citations
21 Claims
-
1. A bail assembly for a mining shovel, the shovel including a boom, a hoist rope passing over an end of the boom, a handle movable relative to the boom, a dipper coupled to an end of the handle, the bail assembly comprising:
-
a bail including a first end, a second end, and a brace joint positioned between the first end and the second end, the first end configured to be pivotably coupled to the dipper; an equalizer including an end pivotably coupled to the bail, the equalizer configured to be coupled to the hoist rope passing over the end of the boom; and a pitch brace including a first end pivotably coupled to the brace joint and a second end configured to be pivotably coupled to the handle. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A mining shovel adapted to dig a bank of material, the mining shovel comprising:
-
a boom including an end; a hoist rope extending over the end of the boom; an elongated handle including a first end and a second end, the handle movable relative to the boom; a dipper for engaging the bank of material, the dipper coupled to the second end of the handle, the dipper including a pair of side walls and a digging edge; a bail including a pair of lower ends and an upper end, each lower end pivotably coupled to one of the side walls of the dipper; an equalizer pivotably coupled to the bail, the equalizer secured to an end of the hoist rope passing over the end of the boom, wherein the tension in the hoist rope causes the dipper to automatically pivot through a desired angle relative to the second end of the handle as the hoist rope lifts the dipper through the bank of material. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
-
-
15. A digging assembly for a mining shovel, the mining shovel including a boom and a hoist rope passing over an end of the boom, the digging assembly comprising:
-
a handle configured to be supported for movement relative to the boom, the handle including a first end and a second end; a dipper coupled to the second end of the handle, the dipper including a digging edge; a bail including a first end and a second end, the first end pivotably coupled to the dipper, an equalizer pivotably coupled to the bail, the equalizer configured to be secured to an end of the hoist rope; a pitch brace including a first end and a second end, the first end pivotably coupled to the bail between the first end of the bail and the second end of the bail, the second end pivotably coupled to the handle. - View Dependent Claims (16, 17, 18, 19, 20, 21)
-
Specification