Work machine having a radial and vertical lift path with a common boom assembly pivot
AssigneeDeere & Company
InventorsNILESH T. KUMBHAR, JONATHAN W. LEE, GIOVANNI A. WUISAN
Life of this patent
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Abstract
A work machine comprising a mainframe, an operator cab, and boom assembly. The mainframe extends in a fore-aft direction. The operator cab is coupled to the mainframe. The boom assembly is movably coupled to the mainframe at a boom assembly pivot. The boom assembly is movable between a retracted position and an extended position. The boom assembly pivot is located aft of the operator cab and is commonly positioned for both a vertical lift boom assembly and a radial lift boom assembly.
Claims20
A work machine comprising:
- a mainframe extending in a fore-aft direction;
- an operator cab coupled to the mainframe;
- a boom assembly movably coupled to the mainframe at a boom assembly pivot, the boom assembly movable between a retracted position and an extended position;
- wherein the boom assembly pivot is located aft of the operator cab and is commonly positioned for both a vertical lift boom assembly and a radial lift boom assembly.
A vertical lift boom assembly for a work machine, the work machine having a mainframe, the vertical lift boom assembly comprising:
- a pair of supports fixedly coupled to each side of the mainframe and aft of the operator cab, the pair of supports extending upwardly from and terminating at an upper end located below a line of sight of an operator seat in the operator cab;
- a pair of boom arms extending in a fore-aft direction on each of the mainframe,
- each boom arm including a fore portion and a rear portion,
- the rear portion including a prong with a first portion and a second portion, and
- a pair of first links positioned on each side of the mainframe, the first link coupled to the first portion of the prong and the mainframe;
- a pair of second links extending in an upright direction on each side of the mainframe, the second link coupled to the second portion of the prong, and a boom assembly pivot located proximal to the upper end of the support,
- the fore portion for coupling to an attachment,
- a pair of actuators positioned on each side of the mainframe, each actuator coupled to each boom arm at or near the prong of the boom arm, and the mainframe wherein the extension of the actuator lifts the fore portion of the boom arm, the fore portion following a vertical lift path when the actuators move between a retracted position and an extended position.
A radial lift boom assembly for a work machine, the work machine having a mainframe, the radial lift boom assembly comprising:
- a pair of supports fixedly coupled to each side of the mainframe and aft of the operator cab, the pair of supports extending upwardly from and terminating at an upper end located below a line of sight of an operator seat in the operator cab;
- a pair of boom arms extending in the fore-aft direction positioned on each side of the mainframe, each boom arm including a fore portion and a rear portion,
- the rear portion coupled to the support at a boom assembly pivot, the fore portion for coupling to an attachment;
- and
- a pair of actuators extending in the fore-aft direction positioned on each side of the mainframe, each actuator coupled to the support and the fore portion of the boom arm, the fore portion following a radial lift path when the actuators move between a retracted position and an extended position.
Dependencies are inferred from the claim text.