发明名称 |
MACHINE HAVING HYDRAULICALLY ACTUATED IMPLEMENT SYSTEM WITH COMBINED RIDE CONTROL AND DOWNFORCE CONTROL SYSTEM |
摘要 |
A machine is disclosed. The machine can include a frame and ground engaging propulsion elements coupled with the frame. A hydraulically actuated implement system can be coupled with the frame, and can include a linkage configured to couple with an implement, a hydraulic actuator coupled with the linkage and the frame, and a ride control and downforce control circuit configured to implement a ride control mode and a downforce control mode. The ride control mode can be configured to maintain a pressure of hydraulic fluid in the hydraulic actuator at a ride control pressure, and the downforce control mode can be configured to maintain the pressure of hydraulic fluid in the hydraulic actuator at a downforce control pressure to oppose the weight of the linkage and the implement such that the implement engages a substrate with a predetermined down force pressure which is proportionate to the downforce control pressure. |
申请公布号 |
US2014178164(A1) |
申请公布日期 |
2014.06.26 |
申请号 |
US201213721313 |
申请日期 |
2012.12.20 |
申请人 |
CATERPILLAR INC. |
发明人 |
Peterson Jeremy T.;Kuehn Jeffrey L.;Lomax David J.;Knussman Michael L. |
分类号 |
E02F3/43;E02F9/22 |
主分类号 |
E02F3/43 |
代理机构 |
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代理人 |
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主权项 |
1. A machine comprising:
a frame; ground engaging propulsion elements coupled with the frame; a hydraulically actuated implement system coupled with the frame, and including a linkage configured to couple with an implement, a hydraulic actuator coupled with the linkage and the frame, and a combined ride control and downforce control circuit configured to implement a ride control mode and a downforce control mode; the ride control mode configured to maintain a pressure of hydraulic fluid in the hydraulic actuator at a ride control pressure; and the downforce control mode configured to maintain the pressure of hydraulic fluid in the hydraulic actuator at a downforce control pressure to oppose the weight of the linkage and the implement such that the implement is controllably rested upon and engages a substrate positioned under the implement with a predetermined down force pressure which is proportionate to the downforce control pressure. |
地址 |
Peoria IL US |