Lateral tilt control system for an agricultural harvester
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A01D-041/14
A01B-063/02
A01B-063/10
A01D-041/06
A01D-075/28
A01F-007/06
출원번호
US-0404643
(2017-01-12)
등록번호
US-10159182
(2018-12-25)
발명자
/ 주소
Berggren, Michael
출원인 / 주소
CNH Industrial America LLC
대리인 / 주소
Zacharias, Peter K.
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
A lateral tilt control system for an agricultural harvester may include first and second tilt cylinders coupled between a support structure and an implement of the harvester. The first tilt cylinder may include a first cap-side chamber and a first rod-side chamber and the second tilt cylinder may in
A lateral tilt control system for an agricultural harvester may include first and second tilt cylinders coupled between a support structure and an implement of the harvester. The first tilt cylinder may include a first cap-side chamber and a first rod-side chamber and the second tilt cylinder may include a second cap-side chamber and a second rod-side chamber. The system may also include a first fluid line providing a flow path between the first cap-side chamber and the second rod-side chamber and a second fluid line providing a flow path between the first rod-side chamber and the second cap-side chamber. Additionally, the system may include a pressure relief valve coupled between the first and second fluid lines to allow fluid to be transferred between the first and second fluid lines when a fluid pressure within either fluid line exceeds a relief pressure setting.
대표청구항▼
1. A lateral tilt control system for an agricultural harvester including a support structure and an implement pivotally coupled to the support structure, the system comprising: a first tilt cylinder coupled between the support structure and the implement, the first tilt cylinder including a first ca
1. A lateral tilt control system for an agricultural harvester including a support structure and an implement pivotally coupled to the support structure, the system comprising: a first tilt cylinder coupled between the support structure and the implement, the first tilt cylinder including a first cap-side chamber and a first rod-side chamber;a second tilt cylinder coupled between the support structure and the implement, the second tilt cylinder including a second cap-side chamber and a second rod-side chamber;a first fluid line providing a flow path between the first cap-side chamber of the first tilt cylinder and the second rod-side chamber of the second tilt cylinder to fluidly couple the first cap-side chamber to the second rod-side chamber;a second fluid line providing a flow path between the first rod-side chamber of the first tilt cylinder and the second cap-side chamber of the second tilt cylinder to fluidly couple the first rod-side chamber to the second cap-side chamber; anda pressure relief valve coupled between the first and second fluid lines, the pressure relief valve being configured to be opened to allow fluid to be transferred between the first and second fluid lines when a fluid pressure within one of the first fluid line and the second fluid line exceeds a relief pressure setting associated with the pressure relief valve. 2. The system of claim 1, wherein, when the fluid pressure within the first fluid line exceeds the relief pressure setting, fluid contained within the first fluid line is transferred through the relief pressure valve to the second fluid line to allow the implement to pivot relative to the support structure in a first direction. 3. The system of claim 2, wherein, when the fluid pressure within the second fluid line exceeds the relief pressure setting, fluid contained within the second fluid line is transferred through the relief pressure valve to the first fluid line to allow the implement to pivot relative to the support structure in a second direction opposite the first direction. 4. The system of claim 1, further comprising a controller communicatively coupled to the pressure relief valve, the controller being configured to electronically control operation of the pressure relief valve based on the relief pressure setting. 5. The system of claim 4, wherein the controller is configured to adjust the relief pressure setting associated with the pressure relief valve based on inputs received from an operator of the agricultural harvester. 6. The system of claim 4, further comprising at least one pressure sensor provided in flow communication with each of the first and second fluid lines, the controller being further configured to monitor the fluid pressure within the first and second fluid lines based on sensor measurements provided by the at least one pressure sensor and compare the monitored fluid pressure to the relief pressure setting associated with the pressure relief valve. 7. The system of claim 1, further comprising at least one control valve provided in flow communication with the first and second fluid lines, the at least one control valve being configured to regulate a supply of fluid from a pressurized fluid source to the first and second fluid lines. 8. The system of claim 7, wherein the at least one control valve is configured to cut-off the supply of fluid from the pressurized fluid source when the first and second tilt cylinders are operating in a passive control mode to form a closed-loop fluid circuit between the first and second fluid lines across the pressure relief valve. 9. The system of claim 1, wherein the implement is configured to pivot relative to the support structure about a pivot point, the first and second tilt cylinders being positioned on opposite lateral sides of the pivot point. 10. The system of claim 1, wherein the implement comprises a header of the agricultural harvester and the support structure comprises a feeder of the agricultural harvester. 11. An agricultural harvester, comprising: a feeder;a header pivotally coupled to the feeder; anda lateral tilt control system configured to allow the header to pivot relative to the feeder to adjust a lateral orientation of the header, the lateral tilt control system comprising:a first tilt cylinder coupled between the header and the feeder, the first tilt cylinder including a first cap-side chamber and a first rod-side chamber;a second tilt cylinder coupled between the header and the feeder, the second tilt cylinder including a second cap-side chamber and a second rod-side chamber;a first fluid line providing a flow path between the first cap-side chamber of the first tilt cylinder and the second rod-side chamber of the second tilt cylinder to fluidly couple the first cap-side chamber to the second rod-side chamber;a second fluid line providing a flow path between the first rod-side chamber of the first tilt cylinder and the second cap-side chamber of the second tilt cylinder to fluidly couple the first rod-side chamber to the second cap-side chamber; anda pressure relief valve coupled between the first and second fluid lines, the pressure relief valve being configured to be opened to allow fluid to be transferred between the first and second fluid lines when a fluid pressure within one of the first fluid line and the second fluid line exceeds a relief pressure setting associated with the pressure relief valve. 12. The agricultural harvester of claim 11, wherein, when the fluid pressure within the first fluid line exceeds the relief pressure setting, fluid contained within the first fluid line is transferred through the relief pressure valve to the second fluid line to allow the header to pivot relative to the feeder in a first direction. 13. The agricultural harvester of claim 12, wherein, when the fluid pressure within the second fluid line exceeds the relief pressure setting, fluid contained within the second fluid line is transferred through the relief pressure valve to the first fluid line to allow the header to pivot relative to the feeder in a second direction opposite the first direction. 14. The agricultural harvester of claim 11, further comprising a controller communicatively coupled to the pressure relief valve, the controller being configured to electronically control operation of the pressure relief valve based on the relief pressure setting. 15. The agricultural harvester of claim 14, wherein the controller is configured to adjust the relief pressure setting associated with the pressure relief valve based on inputs received from an operator of the agricultural harvester. 16. The agricultural harvester of claim 14, further comprising at least one pressure sensor provided in flow communication with each of the first and second fluid lines, the controller being further configured to monitor the fluid pressure within the first and second fluid lines based on sensor measurements provided by the at least one pressure sensor and compare the monitored fluid pressure to the relief pressure setting associated with the pressure relief valve. 17. The agricultural harvester of claim 11, further comprising at least one control valve provided in flow communication with the first and second fluid lines, the at least one control valve being configured to regulate a supply of fluid from a pressurized fluid source to the first and second fluid lines. 18. The agricultural harvester of claim 17, wherein the at least one control valve is configured to cut-off the supply of fluid from the pressurized fluid source when the first and second tilt cylinders are operating in a passive control mode to form a closed-loop fluid circuit between the first and second fluid lines across the pressure relief valve. 19. The agricultural harvester of claim 11, wherein the header is configured to pivot relative to the feeder about a pivot point, the first and second tilt cylinders being positioned on opposite lateral sides of the pivot point.
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이 특허에 인용된 특허 (13)
Chmielewski Thomas A. (Langhorne PA) Demarest Scott T. (Washington Crossing PA) Colavito Leonard R. (Newton PA) Zeuner Kenneth W. (New Hope PA), Agricultural harvester with closed loop ground tracking control.
DePauw Richard A. (Moline IL) Spangler Robert P. (Hampton IL) Brown William R. (East Moline IL) Hengen Edward J. (South Bend IN), Automatic height control for a laterally pivoted harvester header.
Hanson Raymond A. (Liberty Lake WA) Bird Robert L. (Spokane WA) Pfaff Kenneth A. (Spokane WA), Combine harvester leveling system, combine harvester header adjusting system, and pivoting chain drive system.
Duca Mihail (Bucharest RU) Vasiliu Dan (Bucharest RU) Demetrescu Teodor (Bucharest RU) Cimpoias Ion (Bucharest RU) Linca Ion (Bucharest-Otopeni RU) Breazu Stefan (Bucharest RU) Antonescu Virgil (Buch, Device for maintaining an upright position of the body of a harvester-thresher machines.
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