A lift linkage assembly for a work machine having a work tool. The lift linkage assembly includes a frame, a boom arm, an upper link, a lower link, and a hydraulic actuator. The boom arm is configured to be pivotally coupled to the work tool and has a surface that defines a longitudinal axis. The up
A lift linkage assembly for a work machine having a work tool. The lift linkage assembly includes a frame, a boom arm, an upper link, a lower link, and a hydraulic actuator. The boom arm is configured to be pivotally coupled to the work tool and has a surface that defines a longitudinal axis. The upper link has a first end pivotally coupled to the frame and a second end pivotally coupled to the boom arm. The lower link has a first end pivotally coupled to the frame and a second end pivotally coupled to the boom arm. The hydraulic actuator has a rod that is pivotally coupled to the boom arm and moves between a retracted position and an extended position. The upper link, lower link, and hydraulic actuator are each spaced from the longitudinal axis.
대표청구항▼
1. A work machine, comprising: a frame and a ground engaging mechanism, the ground-engaging mechanism adapted to support the frame;a work tool coupled to the frame, the work tool operably controlled to perform a work function;a boom arm pivotally coupled to the work tool, the boom arm configured to
1. A work machine, comprising: a frame and a ground engaging mechanism, the ground-engaging mechanism adapted to support the frame;a work tool coupled to the frame, the work tool operably controlled to perform a work function;a boom arm pivotally coupled to the work tool, the boom arm configured to move the work tool from a first position to a second position along a lift path;an upper link pivotally coupled at one end to the frame and at an opposite end to the boom arm, where the upper link is pivotally coupled to the boom arm at a first location;a lower link pivotally coupled at one end to the frame and at an opposite end to the boom arm, where the lower link is pivotally coupled to the boom arm at a second location; anda hydraulic actuator pivotally coupled at one end to the frame and at an opposite end to the boom arm, where the hydraulic actuator is pivotally coupled to the boom arm at a third location;wherein, the first location and second location are spaced from one another by a first distance, the second location and third location are spaced from one another by a second distance, and the first location and third location are spaced from one another by a third distance;wherein, the first distance is at least twice the third distance;wherein, the second distance is at least twice the third distance. 2. The work machine of claim 1, wherein the first distance and second distance are at least three times the third distance. 3. The work machine of claim 1, wherein: the boom arm includes an interior surface that defines a longitudinal axis; andthe upper link, lower link, and hydraulic actuator are disposed offset from the longitudinal axis towards a centerline of the machine. 4. The work machine of claim 3, wherein: the upper link is offset by a first offset distance from the longitudinal axis; andthe hydraulic actuator is offset by a second offset distance from the longitudinal axis, where the first offset distance is greater than the second offset distance. 5. The work machine of claim 4, wherein the lower link is offset by a third offset distance from the longitudinal axis, where the third offset distance is less than the first offset distance. 6. The work machine of claim 5, wherein: the upper link comprises a rear coupling point defined between the one end and the opposite end; andthe transverse bend is defined between the first location and the rear coupling point. 7. The work machine of claim 1, wherein the upper link comprises a transverse bend defined therein between the one end and the opposite end thereof. 8. The work machine of claim 1, further comprising a second hydraulic actuator pivotally coupled at one end to the boom arm and a second end to the work tool, wherein the first and second hydraulic actuators include a rod that extends between a retracted position and an extended position; wherein, movement of each rod between the retracted position and extended position and pivotal movement of the upper link, lower link and first hydraulic actuator relative to the boom arm induces movement of the work tool along the lift path between the first position and the second position. 9. The work machine of claim 8, wherein the movement of the work tool along the lift path defines a lift curve relative to a hinge pin connection coupling the work tool and boom arm to one another, the lift curve having at least a first region corresponding to the first position, a second region corresponding to the second position, and a third region corresponding to a position defined between the first position and second position, where the lift curve has a first defined slope in the first region, a second defined slope in the second region, and a third defined slope in the third region such that the first slope and second slope are greater than the third slope.
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이 특허에 인용된 특허 (6)
Andrews Charles David ; Miller Gordon Edward ; Schult Leslie Harold ; Modzik ; Jr. Andrew Edward, Boom arm linkage mechanism.
Azure, John P.; Knipp, Joseph C.; Kuemper, James A., Utility loader with high lift loader arms and unifying hand grip for dual traction control levers.
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