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公开(公告)号：US20210285468A1
公开(公告)日：2021-09-16
申请号：US16816810
申请日：2020-03-12
摘要： A milling machine may have a frame, ground engaging tracks that support the frame, and an actuator that adjusts a height of the frame relative to the track. The milling machine may have a control valve that selectively controls a flow of fluid into or out of the actuator based on the current supplied to the control valve. The milling machine may have a controller that determines the amount of current required to operate the actuator at a nominal actuator velocity and supplies that current to the control valve. The controller determines a measured actuator velocity based on a time required to extend or retract the actuator by a predetermined length, and adjusts the amount of current based on the measured and nominal actuator velocities. The controller also supplies the adjusted amount of current to the control valve to adjust the height of the frame relative to the track.
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公开(公告)号：US20220334581A1
公开(公告)日：2022-10-20
申请号：US17230600
申请日：2021-04-14
发明人： Nathaniel S. DOY
摘要： A method for control of a compacting machine including a ground-engaging implement and a compacting drum includes receiving a request to activate the compacting machine, receiving a command to propel the compacting machine, and automatically generating a command to move the implement to a raised position in which the implement does not engage the ground based on: the request to activate the compacting machine, the command to propel the compacting machine, or a determination that the implement is below a threshold height. The method also includes, once the implement is in the raised position, propelling the compacting machine.
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公开(公告)号：US20210283971A1
公开(公告)日：2021-09-16
申请号：US16816864
申请日：2020-03-12
发明人： Nathaniel S. DOY , Hyppolite KUISSI , Lee M. HOGAN
IPC分类号： B60G17/016 , E01C23/088 , E01C23/12 , F15B13/044 , F15B21/08 , B60G17/015 , B60G17/08
摘要： A milling machine has a frame, ground engaging tracks that support the frame, a first actuator connecting the frame to a first track of the ground engaging tracks and a second actuator connecting the frame to a second track from the ground engaging tracks. The milling machine has an orientation sensor that determines an orientation of the frame. The milling machine has a controller that operates the first and second actuators to raise or lower the frame. The controller determines the frame orientation using the orientation sensor. The controller also determines a velocity error between actuator velocities of the first and second actuators based on the frame orientation and a target orientation of the frame. The controller determines a control parameter for the second actuator based on the velocity error and operates the second actuator using the determined control parameter.
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公开(公告)号：US20230097927A1
公开(公告)日：2023-03-30
申请号：US17490320
申请日：2021-09-30
摘要： A milling machine may have a frame extending along a longitudinal axis and a milling drum attached to the frame. The milling machine may have ground engaging tracks that support the frame, and height-adjustable leg columns connecting the frame to the tracks. The milling machine may also have an engine for rotating the milling drum and propelling the ground engaging tracks. The milling machine may have a slope sensor to measure a roll angle of the frame, a speed sensor to measure a ground speed, and a configuration sensor to measure a machine configuration parameter. The milling machine may also have an alarm device and a controller. The controller may determine a threshold roll angle based on the machine configuration parameter, compare the roll angle with the threshold roll angle, and activate the alarm device when the roll angle is greater than or equal to the threshold roll angle.
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公开(公告)号：US20220186448A1
公开(公告)日：2022-06-16
申请号：US17123257
申请日：2020-12-16
发明人： Jason W. MUIR , Nathaniel S. DOY
IPC分类号： E01C23/088 , G01B5/18
摘要： A milling machine having a height-adjustable machine body includes a longitudinal axis and a lateral axis, a plurality of traction elements, a milling rotor assembly; and a machine height sensor system. The machine height sensor system includes a plurality of laterally adjustable machine height sensors and a plurality of position sensors, each associated with a respective height sensor and measuring a lateral extent of the height sensors.
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公开(公告)号：US20220162815A1
公开(公告)日：2022-05-26
申请号：US17102521
申请日：2020-11-24
IPC分类号： E01C23/088 , E01C23/12 , E01C23/01
摘要： A reclaimer has a frame and a plurality of wheels connected to the frame. The reclaimer has a drum chamber connected to the frame and including movable door. The reclaimer has a milling drum positioned within the drum chamber. The milling drum engages with a ground surface. The reclaimer has an engine that rotates the milling drum and propels the wheels such that material exits the drum chamber from under the movable door. Further, the reclaimer has a controller that determines a position of the movable door based on at least one of a machine characteristic and a predetermined gradation for the material exiting from the drum chamber, and selectively adjusts an actuator associated with the movable door based on the determined position.
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