A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the field of excavators, and provides a flat ground control valve, an excavator flat ground operation control method and an excavator. When the excavator performs composite actions of bucket rod excavation and movable arm lifting on the flat ground, the unloading end of the bucket rod performs oil return, the control oil port receives a movable arm lifting control signal, pushes the first valve element and cuts off the straight-through path, and the return oil at the unloading end of the bucket rod can only slowly return to the oil tank through the throttling hole, so that the switching speed at the beginning stage of bucket rod excavation is slowed down; the bucket rod is prevented from hitting the ground at the early stage. And after the action on the flat ground is finished, the first valve core conducts the straight-through path without receiving a movable arm lifting control signal, so that a throttling effect is not generated, and the excavator is not influenced when the bucket rod acts singly. Therefore, oil return at the unloading end of the bucket rod is limited by additionally arranging the flat ground control valve block without changing the original structures of the bucket rod handle and the main valve, so that the bucket rod is effectively prevented from hitting the ground on the flat ground, and the action speed of the bucket rod is not influenced when the single action of the bucket rod is performed.
本发明涉及挖掘机领域，提供一种平地控制阀、挖掘机平地作业控制方法及挖掘机，包括阀体、直通孔、节流孔和第一阀芯。当挖机做斗杆挖掘加动臂提升平地复合动作时，斗杆卸载端进行回油，控制油口接收动臂提升控制信号，推动第一阀芯，切断直通通路，斗杆卸载端的回油只能经过节流孔缓慢回到油箱，使斗杆挖掘开始阶段切换速度变慢，防止斗杆挖掘前期砸地。当平地动作结束后，因没有收到动臂提升控制信号，第一阀芯将直通通路导通，不产生节流效果，保证挖机在斗杆单动作时不受影响。从而通过增加平地控制阀块，不改变斗杆手柄和主阀原有结构，对斗杆卸载端回油进行限制，有效防止平地时砸地，且在做斗杆单动作时，确保斗杆动作速度不受影响。
The invention relates to the field of excavators, and provides a flat ground control valve, an excavator flat ground operation control method and an excavator. When the excavator performs composite actions of bucket rod excavation and movable arm lifting on the flat ground, the unloading end of the bucket rod performs oil return, the control oil port receives a movable arm lifting control signal, pushes the first valve element and cuts off the straight-through path, and the return oil at the unloading end of the bucket rod can only slowly return to the oil tank through the throttling hole, so that the switching speed at the beginning stage of bucket rod excavation is slowed down; the bucket rod is prevented from hitting the ground at the early stage. And after the action on the flat ground is finished, the first valve core conducts the straight-through path without receiving a movable arm lifting control signal, so that a throttling effect is not generated, and the excavator is not influenced when the bucket rod acts singly. Therefore, oil return at the unloading end of the bucket rod is limited by additionally arranging the flat ground control valve block without changing the original structures of the bucket rod handle and the main valve, so that the bucket rod is effectively prevented from hitting the ground on the flat ground, and the action speed of the bucket rod is not influenced when the single action of the bucket rod is performed.
本发明涉及挖掘机领域，提供一种平地控制阀、挖掘机平地作业控制方法及挖掘机，包括阀体、直通孔、节流孔和第一阀芯。当挖机做斗杆挖掘加动臂提升平地复合动作时，斗杆卸载端进行回油，控制油口接收动臂提升控制信号，推动第一阀芯，切断直通通路，斗杆卸载端的回油只能经过节流孔缓慢回到油箱，使斗杆挖掘开始阶段切换速度变慢，防止斗杆挖掘前期砸地。当平地动作结束后，因没有收到动臂提升控制信号，第一阀芯将直通通路导通，不产生节流效果，保证挖机在斗杆单动作时不受影响。从而通过增加平地控制阀块，不改变斗杆手柄和主阀原有结构，对斗杆卸载端回油进行限制，有效防止平地时砸地，且在做斗杆单动作时，确保斗杆动作速度不受影响。
Flat ground control valve, excavator flat ground operation control method and excavator
平地控制阀、挖掘机平地作业控制方法及挖掘机
YANG MIMI (author)
2023-12-01
Patent
Electronic Resource
Chinese
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