发明名称 |
AUTOMATIC GRADING SYSTEM FOR CONSTRUCTION MACHINE AND METHOD FOR CONTROLLING THE SAME |
摘要 |
The present invention relates to an automatic grading system for a construction machine, including: a work apparatus having a boom connected pivotally to one side of a vehicle body, an arm connected pivotally to a front end portion of the boom, and a bucket connected pivotally to a front end portion of the arm; a boom angle detection sensor mounted on one side of the boom; an arm angle detection sensor mounted on one side of the arm; a switch panel on which a standard grading mode switch, a grading history storage switch, and a history grading mode switch selected for a grading work are disposed; an electronic control unit adapted to receive grade input signals applied from the angle detection sensors at the time when the grading mode switches and a joystick for controlling the work apparatus are manipulated and to calculate the grade input signals in accordance with a predetermined control algorithm. |
申请公布号 |
US2015240445(A1) |
申请公布日期 |
2015.08.27 |
申请号 |
US201214430852 |
申请日期 |
2012.09.25 |
申请人 |
VOLVO CONSTRUCTION EQUIPMENT AB |
发明人 |
Guo Peng;Meng Ying;Tian Lu |
分类号 |
E02F3/43;E02F9/20 |
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. An automatic grading system for a construction machine, comprising:
a work apparatus having a boom connected pivotally to one side of a vehicle body, an arm connected pivotally to a front end portion of the boom, and a bucket connected pivotally to a front end portion of the arm; a boom angle detection sensor mounted on one side of the boom so as to sense the angular movement of the boom with respect to the vehicle body; an arm angle detection sensor mounted on one side of the arm so as to sense the angular movement of the arm with respect to the boom; a switch panel on which a standard grading mode switch, a grading history storage switch, and a history grading mode switch selected for a grading work are disposed; an electronic control unit adapted to receive grade input signals applied from the angle detection sensors at the time when the grading mode switches and a joystick for controlling the work apparatus are manipulated and to calculate the grade input signals in accordance with a predetermined control algorithm to output grade control signals for controlling the angular movements of the boom, arm and bucket, so that the angular movement of the bucket is fixed to a given starting angle from an initial grading position Gi to a final grading position Ge and the angular movements of the boom and arm are determined as variable angles to maintain the given starting angle; and work apparatus control valves adapted to control the hydraulic pressures for driving a boom cylinder, an arm cylinder and a bucket cylinder in response to the grade control signals. |
地址 |
Eskilstuna SE |