IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0080392
(2002-02-25)
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발명자
/ 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
10 인용 특허 :
6 |
초록
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A track drive system for a mobile irrigation system adapts to either centrally pivoted circular or linear mobile systems, as desired. A first embodiment has a single drive wheel with opposed first and second end guide wheels, surrounded by a single narrow track. A single drive motor and gear reducti
A track drive system for a mobile irrigation system adapts to either centrally pivoted circular or linear mobile systems, as desired. A first embodiment has a single drive wheel with opposed first and second end guide wheels, surrounded by a single narrow track. A single drive motor and gear reduction drive, drives the central wheel. The central wheel is of considerably larger diameter than the two end guide wheels, and simultaneously contacts the track with both its upper and lower peripheries at all times. The mechanism is articulated to allow independent wheel movement relative to one another, thus providing better traction over uneven surfaces. The central drive wheel is always in contact with both the upper and lower track portion to provide continuous drive traction for the device. A second embodiment includes additional idler wheels between the two end wheels and the central drive wheel.
대표청구항
▼
1. A track drive for supporting an irrigation pipe of a mobile irrigation system, comprising:a single, centrally disposed drive wheel having an axle;a first and a second end guide wheel, disposed longitudinally to either side of said drive wheel and widely spaced therefrom;said drive wheel having a
1. A track drive for supporting an irrigation pipe of a mobile irrigation system, comprising:a single, centrally disposed drive wheel having an axle;a first and a second end guide wheel, disposed longitudinally to either side of said drive wheel and widely spaced therefrom;said drive wheel having a diameter larger than each said end guide wheel, a narrow width and a dished interior;a drive motor and reduction gearbox disposed within said dished interior of said drive wheel and substantially concentric with said drive wheel;along, narrow endless track extending around said chive wheel and each said end guide wheel and in close contact therewith; andsaid track having an inner surface in continuous tangential contact with said drive wheel. 2. The track drive according to claim 1, further including:a first and a second intermediate idler wheel disposed respectively between said first end guide wheel and said drive wheel, and said second end guide wheel and said drive wheel. 3. The track drive according to claim 1, further including:a first upper frame member having a pipe attachment end pivotally secured to the irrigation pipe, and extending radially downwardly and laterally therefrom;a second upper frame member having a pipe attachment end secured to the irrigation pipe, and extending radially downwardly and laterally therefrom;each said upper frame member having a guide wheel attachment end opposite said pipe attachment end;said first and said second end guide wheel each being rotationally secured to said guide wheel attachment end respectively of said first and said second upper frame member;a first and a second lower frame member each having a guide wheel attachment end and a drive wheel attachment end;each said guide wheel attachment end of said first and said second lower frame member being pivotally attached to said guide wheel attachment end respectively of said first and said second upper frame member;each said drive wheel attachment end of said first and said second lower frame member being pivotally secured to said axle of said drive wheel;a first and a second suspension arm, each having a bifurcated drive wheel attachment end and an opposite upper frame member attachment end;said drive wheel attachment end of each said suspension arm being pivotally secured to said axle of said drive wheel;said upper frame attachment end of each said suspension arm being adjustably secured generally medially respectively to said first and said second upper frame member; andeach said upper frame attachment end of each said suspension arm having spring means disposed thereon, urging each said suspension arm and said drive wheel resiliently downwardly and further urging each said end guide wheel apart independently from one another by means of said first and said second lower frame member. 4. The track drive according to claim 3, wherein:each said upper frame member, each said lower frame member, and each said suspension arm define a frame plane; andeach said end guide wheel and said drive wheel define a wheel plane substantially coplanar with said frame plane. 5. The track drive according to claim 1, further including:a plurality of evenly spaced tugs extending from said inner surface of said track, said drive wheel having a rim including a series of evenly spaced track engagement passages therethrough, drivingly engaging with said lugs of said track for driving said track. 6. The track drive according to claim 1, further including:crop guide means extending beyond at least one of said first and said second end guide wheels, for smoothly displacing crops with minimal damage and disruption to the crops. 7. A track drive for supporting an irrigation pipe of a mobile irrigation system, comprising:a single, narrow, centrally disposed drive wheel having an axle;a first and a second end narrow guide wheel, disposed longitudinally to either side of said drive wheel, widely spaced therefrom and coplanar therewith;crop guide means extending beyo nd at least one of said first and said second end guide wheels, for smoothly displacing crops with minimal damage and disruption to the crops;a long, narrow endless track extending around said drive wheel and each said end guide wheel and in close contact therewith; anda laterally narrow irrigation pipe support tower disposed above each said guide wheel and said drive wheel, supported thereby and disposed substantially coplanar therewith and with said track. 8. The track drive according to claim 7, wherein said irrigation pipe support tower comprises:a first upper frame member having a pipe attachment end pivotally secured to the irrigation pipe, and extending radially downwardly and laterally therefrom;a second upper frame member having a pipe attachment end secured to the irrigation pipe, and extending radially downwardly and laterally therefrom;each said upper frame member having a guide wheel attachment end opposite said pipe attachment end;said first and said second end guide wheel each being rotationally secured to said guide wheel attachment end respectively of said first and said second upper frame member;a first and a second lower frame member each having a guide wheel attachment end and a drive wheel attachment end;each said guide wheel attachment end of said first and said second lower frame member being pivotally attached to said guide wheel attachment end respectively of said first and said second upper frame member;each said drive wheel attachment end of said first and said second lower frame member being pivotally secured to said axle of said drive wheel;a first and a second suspension arm, each having a bifurcated drive wheel attachment end and an opposite upper frame member attachment end;said drive wheel attachment end of each said suspension arm being pivotally secured to said axle of said drive wheel;said upperframe attachment end of each said suspension arm being adjustably secured generally medially respectively to said first and said second upper frame member; andeach said upper frame attachment end of each said suspension arm having spring means disposed thereon, urging each said suspension arm and said drive wheel resiliently downwardly and further urging each said end guide wheel apart independently from one another by means of said first and said second lower frame member. 9. The track drive according to claim 7, further including:a first and a second intermediate idler wheel disposed respectively between said first end guide wheel and said drive wheel, and said second end guide wheel and said drive wheel. 10. The track drive according to claim 7, wherein said drive wheel has a narrow width and a dished interior, the track drive further comprising:a drive motor and reduction gearbox disposed within said dished interior of said drive wheel and substantially concentric with said drive wheel. 11. The track drive according to claim 7, further including:a plurality of evenly spaced lugs extending from said inner surface of said track, said drive wheel having a rim including a series of evenly spaced track engagement passages therethrough, drivingly engaging with said lugs of said track for driving said track. 12. A track drive for supporting an irrigation pipe of a mobile irrigation system, comprising:a first upper frame member having a pipe attachment end pivotally secured to the irrigation pipe, and extending radially downwardly and laterally therefrom;a second upper frame member having a pipe attachment end secured to the irrigation pipe, and extending radially downwardly and laterally therefrom;each said upper frame member having a guide wheel attachment end opposite said pipe attachment end;a first and a second end guide wheel each being rotationally secured to said guide wheel attachment end respectively of said first and said second upper frame member;a first and a second lower frame member each having a guide wheel attachment end and a drive wheel attachment end;each said guide wheel attachment en d of said first and said second lower frame member being pivotally attached to said guide wheel attachment end respectively of said first and said second upper frame member;a single, narrow, centrally disposed drive wheel having an axle; each said drive wheel attachment end of said first and said second lower frame member being pivotally secured to said axle of said drive wheel;a first and a second suspension arm, each having a bifurcated drive wheel attachment end and an opposite upper frame member attachment end;said drive wheel attachment end of each said suspension arm being pivotally secured to said axle of said drive wheel;said upper frame attachment end of each said suspension arm being adjustably secured generally medially respectively to said first and said second upper frame member; andeach said upper frame attachment end of each said suspension arm having spring means disposed thereon, urging each said suspension arm and said drive wheel resiliently downwardly and further urging each said end guide wheel apart independently from one another by means of said first and said second lower frame member. 13. The track drive according to claim 12, wherein said drive wheel has a diameter larger than each said end guide wheel, the track drive further comprising:a long, narrow endless track extending around said drive wheel and each said end guide wheel and in close contact therewith, said track having an inner surface in continuous tangential contact with said drive wheel. 14. The track drive according to claim 12, wherein:each said upper frame member, each said lower frame member, and each said suspension arm define a frame plane; andeach said end guide wheel and said drive wheel define a wheel plane substantially coplanar with said frame plane. 15. The track drive according to claim 12, further including:a first and a second intermediate idler wheel disposed respectively between said first end guide wheel and said drive wheel, and said second end guide wheel and said drive wheel. 16. The track drive according to claim 12, wherein said drive wheel has a narrow width and a dished interior, the track drive further comprising:a drive motor and reduction gearbox disposed within said dished interior of said drive wheel and substantially concentric with said drive wheel. 17. The track drive according to claim 12, further including:a plurality of evenly spaced lugs extending from said inner surface of said track, said drive wheel having a rim including a series of evenly spaced track engagement passages therethrough, drivingly engaging with said lugs of said track for driving said track. 18. The track drive according to claim 12, further including:crop guide means extending beyond at least one of said first and said second end guide wheels, for smoothly displacing crops with minimal damage and disruption to the crops.
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