Sprayer with pivotal wing booms having forward and reverse breakaway and folded X-shaped transport position
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05B-001/20
B05B-001/14
E01C-019/17
E01C-019/00
E01H-003/02
E01H-003/00
A01C-023/02
A01C-023/00
출원번호
US-0411435
(2006-04-26)
등록번호
US-7364096
(2008-04-29)
발명자
/ 주소
Sosnowski,Timothy P.
Bisson,Robert J.
Ellson,Bart T.
Norlander,David J.
출원인 / 주소
The Toro Company
대리인 / 주소
Miller,James W.
인용정보
피인용 횟수 :
8인용 특허 :
8
초록▼
This invention relates to a sprayer having a center boom and pivotal wing booms. The wing booms can be pivoted from an extended spray position to an elevated transport position by lifting and lowering each wing boom about a longitudinal lift pivot axis. In addition, each wing boom can bi-directional
This invention relates to a sprayer having a center boom and pivotal wing booms. The wing booms can be pivoted from an extended spray position to an elevated transport position by lifting and lowering each wing boom about a longitudinal lift pivot axis. In addition, each wing boom can bi-directionally breakaway relative to the center boom by virtue of a breakaway pivot arranged between the lift pivot axis and the innermost end of the wing boom. The breakaway pivot has at least one pair of nested cams that are biased into their nested condition by at least one spring. The center boom carries a pair of support cradles that direct or cam one wing boom forwardly and the other wing boom rearwardly as the wing booms are lifted into the transport position such that the wing booms form an X-shape relative to one another. The support cradles are partially flexible to allow the wing booms to release from the cradles if they strike an obstruction.
대표청구항▼
We claim: 1. A sprayer for spraying a liquid onto an upwardly facing surface, the sprayer being carried on a vehicle for moving the sprayer over the surface, which comprises: (a) a center boom carried on the vehicle; (b) a pair of wing booms pivotally mounted to opposite ends of the center boom; (c
We claim: 1. A sprayer for spraying a liquid onto an upwardly facing surface, the sprayer being carried on a vehicle for moving the sprayer over the surface, which comprises: (a) a center boom carried on the vehicle; (b) a pair of wing booms pivotally mounted to opposite ends of the center boom; (c) a plurality of downwardly facing spray nozzles carried on the center and wing booms for spraying liquid downwardly onto the upwardly facing surface; (d) a breakaway pivot between each wing boom and each end of the center boom, each breakaway pivot configured to permit bi-directional pivoting of the wing boom relative to the center boom should the wing boom strike an obstruction during forward or reverse motion of the sprayer, wherein the breakaway pivot includes at least a first pair of cams that are nested together preceding a breakaway event and that become at least partially non-nested during a breakaway event; and (e) a member forming an enclosed chamber around the nested first pair of cams, and wherein the breakaway pivot includes at least one fitting for adding a lubricant to the chamber to lubricate movement of one cam in the first pair relative to the other cam in the first pair. 2. The sprayer of claim 1, wherein the breakaway pivot is arranged at an inclined angle relative to a vertical axis to cause the wing boom to lift as it pivots relative to the center boom during a breakaway event such that the force of gravity acting on the wing boom assists the wing boom in resetting following the breakaway event. 3. The sprayer of claim 2, wherein the breakaway pivot includes at least one spring that is acted on during the breakaway event in a manner that increases a biasing force provided by the spring such that the spring assists the force of gravity in resetting the wing boom following the breakaway event. 4. The sprayer of claim 1, wherein the breakaway pivot is formed of two identical pivot parts that are assembled together in an inverted relationship relative to one another. 5. The sprayer of claim 1, wherein each cam in the first pair comprises a rounded ridge interrupted by a central valley, the rounded ridge on one cam being received in the central valley of the other cam when the first pair of cams are nested together and the rounded ridge climbing up the slope of the valley during a breakaway event to force the first pair of cams axially apart. 6. The sprayer of claim 5, further including a spring whose biasing force is applied to the first pair of cams normally forcing the first pair of cams together to normally keep the cams nested together. 7. The sprayer of claim 6, wherein the biasing force of the spring is increased when the first pair of cams are axially forced apart during a breakaway event. 8. The sprayer of claim 1, further including a second pair of cams that are nested together preceding a breakaway event and that become at least partially non-nested during a breakaway event, the first and second pairs of cams being spaced apart axially along a breakaway pivot axis. 9. The sprayer of claim 1, wherein the breakaway pivot is arranged between each end of the wing boom and a pivotal lever carried on one end of the center boom, the pivotal lever pivoting about a longitudinal pivot axis. 10. The sprayer of claim 1, wherein the breakaway pivot returns the wing boom to a spray position in a controlled manner without requiring an operator to manually reset the wing boom. 11. A sprayer for spraying a liquid onto an upwardly facing surface, the sprayer being carried on a vehicle for moving the sprayer over the surface, which comprises: (a) a center boom carried on the vehicle; (b) a pair of wing booms pivotally mounted to opposite ends of the center boom for pivoting about longitudinal lift pivot axes to permit the wing booms to be raised into a vertically elevated transport position; (c) a plurality of downwardly facing spray nozzles carried on the center and wing booms for spraying liquid downwardly onto the upwardly facing surface; and (d) a pair of cam members arranged on the center boom to cam one wing boom forwardly and the other wing boom rearwardly as the wing booms are lifted into their transport position to place the wing booms in an X-shaped transport position relative to one another, wherein the camming of the wing booms caused by the cam members produces substantially all of the forward and rearward motion of the wing booms as the wing booms are being placed into the X-shaped transport position. 12. The sprayer of claim 11, wherein the cam members comprise cradles that also retain the wing booms in the transport position. 13. The sprayer of claim 12, wherein the cradles include forked tops that extend in opposite directions on the center boom with the forked tops pointing laterally outwardly towards each end of the center boom. 14. The sprayer of claim 13, wherein the forked tops include a first arm and a second arm connected together at a junction, the first arm of each cradle extending at an angle across a centerline of the center boom. 15. The sprayer of claim 14, wherein a top of the wing boom engages against and rides on the first arm of the cradle as the wing boom is raised into the transport position with the angled orientation of the first arm directing the wing boom either forwardly or rearwardly. 16. The sprayer of claim 15, wherein the first arm is longer than the second arm. 17. The sprayer of claim 13, wherein the forked tops of the cradles are flexibly secured to the center boom to allow the tops of the cradles to flex out of the way if a wing boom held within the cradle is forced out of the cradle by hitting an obstruction. 18. A sprayer for spraying a liquid onto an upwardly facing surface, the sprayer being carried on a vehicle for moving the sprayer over the surface, which comprises: (a) a center boom carried on the vehicle; (b) a pair of wing booms pivotally mounted to opposite ends of the center boom, wherein the wing booms can be folded upwardly relative to the center boom to dispose the wing booms in a vertically elevated transport position; (c) a plurality of downwardly facing spray nozzles carried on the center and wing booms for spraying liquid downwardly onto the upwardly facing surface; and (d) a pair of cradles for retaining the wing booms in their elevated transport positions, the cradles having a whip spring to allow the cradles to flex or tip relative to the center boom to release the wing booms from the cradles should a wing boom hit a low-overhead obstruction. 19. The sprayer of claim 1, wherein the chamber forming member comprises a flexible bellows that encloses and surrounds the first pair of cams. 20. A sprayer for spraying a liquid onto an upwardly facing surface, the sprayer being carried on a vehicle for moving the sprayer over the surface, which comprises: (a) a center boom carried on the vehicle; (b) a pair of wing booms pivotally mounted to opposite ends of the center boom; (c) a plurality of downwardly facing spray nozzles carried on the center and wing booms for spraying liquid downwardly onto the upwardly facing surface; (d) a breakaway pivot between each wing boom and each end of the center boom, each breakaway pivot configured to permit bi-directional pivoting of the wing boom relative to the center boom should the wing boom strike an obstruction during forward or reverse motion of the sprayer, wherein the breakaway pivot is formed of two identical pivot parts that are assembled together in an inverted relationship relative to one another, wherein each pivot part is U-shaped having facing, parallel end walls connected together by a side wall, wherein each end wall of each pivot part has a contoured cam with the cams on the end walls of each pivot part being identical to one another but offset 90�� relative to one another such that the cams at each end of the two assembled pivot parts will axially nest together to form first and second pairs of axially spaced cams when the pair of pivot parts that comprise the breakaway pivot are inverted relative to one another and assembled together.
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이 특허에 인용된 특허 (8)
Ross E. Yocom ; Roger E. Yocom, Articulated spray boom apparatus.
Claussen Steven W. (Benson MN) Gorres Thomas J. (Benson MN) O\Dougherty Michael D. (Maplewood MN) Weckwerth Dean W. (Cashel Township ; Swift County MN), Spray hood and assembly including the spray hood.
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