IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0150301
(2011-06-01)
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등록번호 |
US-8573336
(2013-11-05)
|
발명자
/ 주소 |
- Arulraja, Mylvaganam
- Freberg, Michael S.
- Weaver, Jr., Leslie L.
- Layko, Michael C.
- Parker, Jeffrey M.
- Bottom, Michael
|
출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
14 |
초록
▼
A machine is provided. The machine has a forward direction of travel and includes a frame, at least one lift arm, a first torsion axle assembly, an undercarriage, and an endless track. The lift arm is pivotally attached to the frame. The first torsion axle assembly is attached to the frame and inclu
A machine is provided. The machine has a forward direction of travel and includes a frame, at least one lift arm, a first torsion axle assembly, an undercarriage, and an endless track. The lift arm is pivotally attached to the frame. The first torsion axle assembly is attached to the frame and includes a first torsion arm, a first torsion shaft, and a first axle, with the first torsion shaft and the first axle extending from the first torsion arm. The undercarriage is attached to the first torsion axle assembly and the endless track encircles the undercarriage. One of the first torsion shaft and the first axle is attached to the frame and the other of the first torsion shaft and the first axle is attached to the undercarriage. The first torsion arm extends upward from the frame at an angle between 90 and 180 degrees from the forward direction of travel.
대표청구항
▼
1. A machine comprising: a frame;an undercarriage; a first torsion axle assembly connecting the frame to the undercarriage, the first torsion axle assembly including a first torsion shaft assembly, a first torsion arm, and a first axle, the first torsion shaft assembly attaches to and extends from t
1. A machine comprising: a frame;an undercarriage; a first torsion axle assembly connecting the frame to the undercarriage, the first torsion axle assembly including a first torsion shaft assembly, a first torsion arm, and a first axle, the first torsion shaft assembly attaches to and extends from the frame, the first torsion arm attaches to the first torsion shaft assembly at one of a plurality of preset selectable rotational attachment orientations, the first axle attaches to and extends from the first torsion arm a distance from the first torsion shaft assembly, and the first axle attaches to the undercarriage; anda second torsion axle assembly connecting the frame to the undercarriage, the second torsion axle assembly including a second torsion shaft assembly, a second torsion arm, and a second axle, the second torsion shaft assembly attaches to and extends from the frame, the second torsion arm attaches to the second torsion shaft assembly at one of the plurality of preset selectable rotational attachment orientations, the second axle attaches to and extends from the second torsion arm a distance from the second torsion shaft assembly, and the second axle attaches to the undercarriage,wherein the undercarriage comprises a roller frame and the first axle is attached to an upper surface of the roller frame and the second axle extends through the roller frame. 2. The machine of claim 1 further comprising: a third torsion axle assembly connecting the frame to the undercarriage, the third torsion axle assembly including a third torsion shaft assembly, a third torsion arm, and a third axle, the third torsion shaft assembly attaches to and extends from the frame on a side substantially opposite of the first torsion axle assembly, the third torsion arm attaches to the third torsion shaft assembly at one of the plurality of preset selectable rotational attachment orientations correlating to the rotational orientation of the first torsion arm, the third axle attaches to and extends from the third torsion arm a distance from the third torsion shaft assembly, and the third axle attaches to the undercarriage. 3. The machine of claim 2 further comprising: a fourth torsion axle assembly connecting the frame to the undercarriage, the fourth torsion axle assembly including a fourth torsion shaft assembly, a fourth torsion arm, and a fourth axle, the fourth torsion shaft assembly attaches to and extends from the frame on a side substantially opposite of the second torsion axle assembly, the fourth torsion arm attaches to the fourth torsion shaft assembly at one of the plurality of preset selectable rotational attachment orientations correlating to the rotational orientation of the second torsion arm, the fourth axle attaches to and extends from the fourth torsion arm a distance from the fourth torsion shaft assembly, and the fourth axle attaches to the undercarriage. 4. The machine of claim 3, wherein the torsion axle assemblies are all positioned on the machine forward of a center of gravity for the machine. 5. The machine of claim 1, wherein the first torsion shaft assembly further comprises: an outer tube;an inner bar; anda plurality of elastomeric cords, wherein the plurality of elastomeric cords hold the inner bar substantially in place inside the outer tube. 6. The machine of claim 5, wherein the outer tube and the inner bar both have a substantially square shaped cross section, and wherein the square shaped cross section of the inner bar is oriented approximately 90 degrees relative to the square shaped cross section of the outer tube. 7. The machine of claim 1, further comprising: at least one lift arm pivotally attached to the frame. 8. The machine of claim 7, further comprising: a bucket implement coupled to the at least one lift arm. 9. The machine of claim 1, wherein the undercarriage further comprises: a plurality of rollers rotatably attached to the roller frame;a rear idler rotatably attached to the roller frame;a drive sprocket rotatably attached to the roller frame;a moveable frame translatably attached to the roller frame,a front idler rotatably attached to the moveable frame;a front roller rotatably attached to the moveable frame; andan endless track encircling the undercarriage. 10. The machine of claim 1, wherein the first axle has a substantially circular cross sectional shape. 11. A suspension system for a machine having a frame and an undercarriage supporting the frame, the suspension system comprising: a first torsion axle assembly attached between the frame and the undercarriage, the first torsion axle assembly including a first torsion shaft attached to the frame, a first torsion arm attached to the first torsion shaft at setup at one of a plurality of preset selectable rotational attachment orientations, and extending rearward with respect to a direction of travel for the machine, and a first axle attached to the first torsion arm and to the undercarriage;a second torsion axle assembly attached between the frame and the undercarriage, the second torsion axle assembly including a second torsion shaft attached to the frame, a second torsion arm attached to the second torsion shaft at setup at one of a plurality of preset selectable starting rotational attachment orientations, and extending frontward with respect to the direction of travel for the machine, and a second axle attached to the second torsion arm and to the undercarriage; a third torsion axle assembly attached between the frame and the undercarriage, the third torsion axle assembly including a third torsion shaft attached to the frame, a third torsion arm attached to the third torsion shaft at setup at one of a plurality of preset selectable rotational attachment orientations, and extending rearward with respect to the direction of travel for the machine, and a third axle attached to the third torsion arm and to the undercarriage; anda fourth torsion axle assembly attached between the frame and the undercarriage, the fourth torsion axle assembly including a fourth torsion shaft attached to the frame, a fourth torsion arm attached to the fourth torsion shaft at setup at one of a plurality of preset selectable rotational attachment orientations, and extending frontward with respect to the direction of travel for the machine, and a fourth axle attached to the fourth torsion arm and to the undercarriage,wherein the torsion axle assemblies are all positioned on the machine forward of a center of gravity for the machine. 12. The suspension system of claim 11 wherein one or more of the axles have a substantially round cross sectional shape. 13. The suspension system of claim 11 wherein one or more of the torsion axle assemblies comprise: an outer tube;an inner bar; anda plurality of flexible cords positioned between inner bar and the outer tube. 14. The suspension system of claim 13, further comprising: a mounting bracket coupled with the outer tube and fastened to the frame, thereby limiting movement of the torsion axle assemblies relative to the frame. 15. A machine suspension system coupling a machine frame to a machine undercarriage, the suspension system comprising: a first front torsion axle assembly connected to a first side of the frame via a first front torsion shaft preset at setup in a selected attachment orientation from a plurality of attachment orientations, and having a first front axle cantilevered above and rearward of the first front torsion shaft, the first front axle coupled to the undercarriage;a second front torsion axle assembly connected to a second side of the frame via a second front torsion shaft preset at setup in a selected attachment orientation from a plurality of attachment orientations, and having a second front axle cantilevered above and rearward of the second front torsion shaft, the second front axle coupled to the undercarriage, the second side of the frame being substantially opposite of the first side of the frame; a first rear torsion axle assembly connected to a first side of the frame via a first rear torsion shaft and having a first rear axle preset to be cantilevered below and forward of the first rear torsion shaft, the first rear axle coupled to the undercarriage; anda second rear torsion axle assembly connected to the second side of the frame via a second rear torsion shaft and having a second rear axle preset to be cantilevered below and forward of the second rear torsion shaft, the second rear axle coupled to the undercarriage, wherein the undercarriage has a roller frame and the first front axle is attached to an upper surface of the roller frame and the first rear axle extends through the roller frame. 16. The machine suspension system of claim 15 wherein the axles are configured with a substantially circular cross sectional shape.
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