System for and method of locking a roll suspension arrangement for a boom assembly mounted on an agricultural sprayer
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F15B-013/16
F15B-013/00
출원번호
US-0424348
(2006-06-15)
등록번호
US-7395663
(2008-07-08)
발명자
/ 주소
Thompson,Dennis G.
Chahley,Dennis W.
출원인 / 주소
CNH Canada, Ltd.
대리인 / 주소
Henkel,Rebecca
인용정보
피인용 횟수 :
4인용 특허 :
13
초록▼
A system to lock a roll-suspension arrangement operatively connected to allow pivotal movement of a boom assembly about a fore-and-aft axis independent of a carrier frame is provided. The system includes an actuator cylinder having an end movable in a linear direction relative to a fixed end. The fi
A system to lock a roll-suspension arrangement operatively connected to allow pivotal movement of a boom assembly about a fore-and-aft axis independent of a carrier frame is provided. The system includes an actuator cylinder having an end movable in a linear direction relative to a fixed end. The fixed end of the actuator cylinder is connected at the carrier frame, and the movable end is connected at the boom assembly. The system further includes a lock valve located in fluid communication with the actuator cylinder. The lock valve in a closed position prevents a fluid flow therethrough so as to restrain movement of the actuator cylinder and rotation of the boom assembly with respect to the carrier frame. In an open position, the lock valve releases movement of the actuator cylinder so that the boom assembly freely pivots independently of the carrier frame.
대표청구항▼
We claim: 1. A system configured to restrain pivoting of a boom assembly about a horizontal, fore-and-aft aligned axis defined by a roll suspension arrangement independently of a carrier frame, the system comprising: an actuator cylinder in isolated fluid communication with an accumulator, the actu
We claim: 1. A system configured to restrain pivoting of a boom assembly about a horizontal, fore-and-aft aligned axis defined by a roll suspension arrangement independently of a carrier frame, the system comprising: an actuator cylinder in isolated fluid communication with an accumulator, the actuator cylinder having a first end connected at the carrier frame and a second end connected at the boom assembly and movable in a linear direction relative to the first end; and a lock valve connected in fluid communication between the accumulator and the actuator cylinder, wherein the lock valve in a closed position prevents a fluid flow therethrough so as to restrain movement of the actuator cylinder and rotation of the boom assembly with respect to the carrier frame, and wherein the lock valve in an open position releases movement of the actuator cylinder such that the boom assembly pivots about the fore-and-aft axis independently of the carrier frame. 2. The lock system as recited in claim 1, wherein the lock valve is in fluid communication with a pilot line, wherein the pilot line is not in fluid communication with the actuator cylinder, wherein the pilot line communicates a signal indicative of movement of the boom assembly from the extended position to the folding position, and wherein in response to the signal, the lock valve moves from the open position to the closed position so as restrain movement of the boom assembly with respect to the carrier frame. 3. The lock system as recited in claim 2, wherein the lock valve in the closed position prevents the fluid flow to and from the actuator cylinder. 4. The lock system as recited in claim 2, wherein the lock valve is biased to an open position. 5. The lock system as recited in claim 2, further comprising a pilot operated check valve connected in fluid communication with the lock valve so as to automatically maintain a fluid pressure to hold the lock valve in the closed position. 6. The lock system as recited in claim 5, wherein the pilot operated check valve remains in the closed position upon loss of the signal indicative of movement of the boom assembly between the extended, operative position and the folded, inoperative position. 7. The lock system as recited in claim 1, wherein the lock valve is electrically-driven to move between open and closed positions. 8. The lock system as recited in claim 1, wherein the lock valve is hydraulically driven to move between open and closed positions. 9. An agricultural sprayer, comprising: a boom assembly that includes a central frame in pivotal support of each of a first boom located opposite a second boom between an extended position and a folded position about a vertical axis; a roll suspension arrangement including a pivot which defines a generally horizontal, fore-and-aft aligned axis about which the boom assembly rotates independently of a carrier frame; a dampening system configured to slow movement of the boom assembly about the roll suspension arrangement in relation to the carrier frame, the dampening system including an actuator cylinder configured to transfer a fluid flow solely with an accumulator, the actuator cylinder having a first end and a second end movable in a linear direction with respect to the first end, the first end connected at the carrier frame and the second end connected at the boom assembly; and a lock system configured to restrain movement of the actuator cylinder of the dampening system and the boom assembly, the lock system including a lock valve in fluid communication between the actuator cylinder and the accumulator, wherein the lock valve in a closed position prevents the fluid flow therethrough so as to restrain movement of the actuator cylinder and pivoting of the boom assembly about the suspension arrangement independently of the carrier frame, and wherein the lock valve in an open position releases movement of the actuator cylinder and pivoting of the boom assembly about the roll suspension arrangement independently of the carrier frame. 10. The agricultural sprayer as recited in claim 9, wherein the lock valve is in fluid communication with a pilot line, wherein the pilot line is not in fluid communication with the actuator cylinder, wherein the pilot line communicates a signal indicative of movement of the boom assembly from the extended position to the folding position, and wherein in response to the signal, the lock valve moves from the open position to the closed position so as restrain movement of the boom assembly with respect to the carrier frame. 11. The agricultural sprayer as recited in claim 9, wherein the lock valve in the closed position prevents the fluid flow to and from the actuator cylinder. 12. The agricultural sprayer as recited in claim 9, wherein the lock valve is biased to an open position. 13. The agricultural sprayer as recited in claim 2, further comprising a pilot operated check valve having an open position that allows transmission of a signal to the lock valve, the signal indicative of movement of one of the booms of the boom assembly between the extended and the folded positions, the pilot operated check valve in the closed position configured to maintain a fluid pressure so as to hold the lock valve in the closed position. 14. The agricultural sprayer as recited in claim 13, wherein in response to the signal, the lock valve moves from a normally open position to a closed position so as to restrain movement of the boom assembly about the roll suspension arrangement with respect to the carrier frame. 15. The agricultural sprayer as recited in claim 13, wherein the pilot operated check valve remains in the open position when the boom assembly moves between the extended, operative position and the folded, inoperative position. 16. The agricultural sprayer as recited in claim 9, wherein the lock valve is electrically-driven to move between open and closed positions. 17. The agricultural sprayer as recited in claim 9, wherein the lock valve is hydraulically driven to move between open and closed positions. 18. A method of restraining a boom assembly from moving independently about a roll suspension arrangement with respect to a carrier frame, the method comprising the steps of: sensing a movement of the boom assembly between an extended position generally perpendicular to a direction of travel and a folded position generally in parallel with the direction of travel; automatically transmitting a signal to a lock valve connected in fluid communication isolated between an actuator cylinder and an accumulator, the signal indicative of the movement of the boom assembly, the actuator cylinder having a first end connected at the carrier frame and a second end connected at the boom assembly; and closing the lock valve in response to the signal so as to prevent a fluid flow therethrough, wherein the lock valve in the closed position prevent a fluid flow to or from the actuator cylinder so as to restrain movement of the actuator cylinder and the boom assembly relative to the carrier frame. 19. The method as recited in claim 18, further comprising the step of: sensing completion of movement of the boom assembly between the assembly between the folded and extended positions; interrupting the signal to the lock valve in response to the step of sensing completion of movement; wherein upon interruption of the signal, a check valve automatically maintains fluid pressure so as to hold the lock valve in the closed position in restraint of movement of the boom assembly about the suspension arrangement. 20. The method as recited in claim 18, further comprising the step of transmitting a pulse width modulated signal so as to selectively cause the lock valve to partially close as designated by the pulse width modulated signal so as selectively regulate a desired level of resistance to movement of the boom assembly about the suspension arrangement.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (13)
Nathan Micha (Pardess-Hanna ILX), Air boom sprayer trailer hitch and suspension.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.