IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0631580
(2009-12-04)
|
등록번호 |
US-8522461
(2013-09-03)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
8 |
초록
▼
A mechanical assembly controls the position of a trencher attached to a tractor and includes a positioning arm attached to the tractor at one end and the trencher at an opposite end. The positioning arm levers the trencher about a single fulcrum point on the positioning arm. A first lift cylinder ha
A mechanical assembly controls the position of a trencher attached to a tractor and includes a positioning arm attached to the tractor at one end and the trencher at an opposite end. The positioning arm levers the trencher about a single fulcrum point on the positioning arm. A first lift cylinder has a base end connected to the tractor and an extendible end connected to the first positioning arm at the single fulcrum point. The positioning arm pivots about the tractor to move the trencher in response to the lift cylinder. Grade control cylinders are also attached to the positioning arm and the trencher to control the angular position of the trencher in relation to the ground below.
대표청구항
▼
1. An assembly for controlling the position of a trencher attached to a tractor, the assembly comprising: a first single-piece positioning arm attached to the tractor and the trencher, said first positioning arm levering the trencher about a single fulcrum point on said first positioning arm;a first
1. An assembly for controlling the position of a trencher attached to a tractor, the assembly comprising: a first single-piece positioning arm attached to the tractor and the trencher, said first positioning arm levering the trencher about a single fulcrum point on said first positioning arm;a first lift cylinder having a base end connected to the tractor and an extendible end connected to said first positioning arm at said single fulcrum point;a hitch configured to attach and detach the assembly from a tractor hitch connection such that the assembly is entirely removable from the tractor; andan additional lift connecting the assembly to said hitch, wherein said first positioning arm pivots about a first connection to the tractor to raise and lower the trencher in response to extension and retraction of said first lift cylinder. 2. An assembly according to claim 1, wherein said first lift cylinder is a sole support between ends of said first positioning arm. 3. An assembly according to claim 2, further comprising a first upright attached to the tractor and supporting said first positioning arm. 4. An assembly according to claim 3, wherein said base end of said first lift cylinder is attached to the tractor via said first upright. 5. An assembly according to claim 1, further comprising a first grade cylinder having a first end attached to said first positioning arm and a second end attached to the trencher such that the trencher pivots about said first positioning arm. 6. An assembly according to claim 1, further comprising: a second single-piece positioning arm attached to the tractor and the trencher opposite said first positioning arm, said positioning arms levering the trencher about respective oppositely positioned single fulcrum points on the first and second positioning arms;a second lift cylinder having a second base end connected to the tractor and a second extendible end connected to said second positioning arm at a single fulcrum point on said second positioning arm, wherein said second positioning arm pivots about a second connection to the tractor to raise and lower the trencher in response to extension and retraction of said second lift cylinder. 7. An assembly for controlling the angular position of a trencher attached to a tractor, the assembly comprising: a first single-piece positioning arm extending between the tractor and the trencher, wherein the first positioning arm is pivotally connected to the tractor at a first support end and pivotally connected to the trencher at an opposite end;a first grade cylinder having a first end attached to said positioning arm proximate the tractor and a second end attached to the trencher at a connection point above said positioning arm;a hitch configured to attach and detach the assembly from a tractor hitch connection such that the assembly is entirely removable from the tractor; andan additional lift connecting the assembly to said hitch. 8. An assembly according to claim 7, further comprising a first upright attached to the tractor and supporting said first positioning arm. 9. An assembly according to claim 7, further comprising a first lift cylinder having a first base end attached to said first upright and a first extendible end attached to said first positioning arm such that said first positioning arm raises and lowers the trencher in response to the extension and retraction of said first lift cylinder. 10. An assembly according to claim 9, further comprising: a second single-piece positioning arm attached to the tractor and the trencher opposite said first positioning arm, said positioning arms levering the trencher about respective oppositely positioned single fulcrum points on the first and second positioning arms;a second lift cylinder having a second base end connected to the tractor and a second extendible end connected to said second positioning arm at a single fulcrum point on said second positioning arm, wherein said second positioning arm pivots about a second connection to the tractor to raise and lower the trencher in response to extension and retraction of said second lift cylinder;a second grade cylinder having a cylinder end attached to said positioning arm proximate the tractor and a second cylinder end attached to the trencher at a second connection point above said second positioning arm. 11. An assembly for adjusting the position of a trencher attached to a tractor, the assembly comprising: a pair of uprights connected to the tractor;a pair of positioning arms, each having a support end and an opposite end, wherein each positioning arm is pivotally connected to a respective upright at the support end and pivotally connected to the trencher at the opposite end;a pair of lift cylinders, each having a base end and an extendible end, wherein each lift cylinder is attached to a respective upright at the base end and attached to a respective positioning arm at the extendible end;a pair of grade cylinders, each having a first end and a second end, wherein each grade cylinder is attached to a respective positioning arm at the first end and attached to the trencher at the second end; anda hitch configured to attach and detach the assembly from a tractor hitch connection such that the assembly is entirely removable from the tractor; andan additional lift connecting the assembly to said hitch,wherein the positioning arms control the lifting height and the attitude of the trencher in response to the extension of said lift cylinders and grade cylinders respectively. 12. An assembly according to claim 11, wherein said lift cylinders lever the trencher about respective single fulcrum points on each positioning arm. 13. An assembly according to claim 11, wherein said grade cylinders control the distribution of the weight of the trencher across said positioning arms. 14. An assembly according to claim 11, wherein said grade cylinders adjust the angle at which the trencher approaches the ground. 15. An assembly according to claim 14, wherein the angle is substantially vertical. 16. An assembly for controlling the position of a trencher attached to a tractor, the assembly comprising: a first upright connected to the tractor;a first positioning arm pivotally connected to the first upright and the trencher;a first lift cylinder connected to the first upright and the first positioning arm, wherein said upright, said positioning arm and said lift cylinder form a triangular support mechanism with the lift cylinder being an adjustable length hypotenuse of the triangular support mechanism;a hitch configured to attach and detach the assembly from a tractor such that the assembly is entirely removable from the tractor; andan additional lift connecting the assembly to said hitch on the tractor,wherein lengthening the hypotenuse lifts the trencher and shortening the hypotenuse lowers the trencher. 17. An assembly according to claim 16, further comprising a first grade cylinder attached between said first positioning arm and the trencher for adjusting the angle at which the trencher approaches the ground. 18. An assembly according to claim 16, wherein said first lift cylinder is the sole fulcrum for levering the trencher with said first positioning arm. 19. An assembly according to claim 16, further comprising a second triangular support mechanism positioned on the opposite side of the trencher, said second triangular support mechanism comprising a second upright, a second positioning arm pivotally connected to said second upright and the trencher, and a second lift cylinder connected to the second upright and the trencher. 20. An assembly according to claim 19, wherein said first and second triangular support mechanisms move uniformly to adjust the position of the trencher.
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