| 摘要 |
A control circuit (400, 500) for an attachment mounting device (29) that has a closed position for securing an implement (36) and an opened position for releasing an implement (36). The control circuit (400, 500) includes at least one hydraulic actuator (402, 403, 502, 503), a control valve (408, 508) and an auto-close feature (428, 528). The control valve (408, 508) has at least a first energized position (413, 513) and a second energized position (415, 515). The first energized position (413, 513) applies pressurized fluid to the at least one hydraulic actuator (402, 403, 502, 503) to actuate the attachment mounting device (29)/ into the closed position. The second energized position (415, 515) applies pressurized fluid to the at least one hydraulic actuator (402, 403, 502, 503) to actuate the attachment mounting device (29) into the opened position. The auto-close feature (428, 528) is configured to be activated after the control valve (408, 508) is in the first energized position (413, 513) and is configured to be deactivated after the control valve(408, 508) is in the second energized position (415, 515). |
