HYDRAULIC SHOVEL

To provide a hydraulic shovel capable of preventing collision of a bucket with the loading space of a transportation vehicle, while preventing lowering of work efficiency.SOLUTION: The controller 27 of a hydraulic shovel calculates the position of a bucket 8, on the basis of detection results by a r...

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Bibliographic Details
Main Authors EBARA CHISATO, HIRAMATSU HIDEFUMI, FUJII TOSHINORI
Format Patent
LanguageEnglish
Japanese
Published 08.04.2021
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Summary:To provide a hydraulic shovel capable of preventing collision of a bucket with the loading space of a transportation vehicle, while preventing lowering of work efficiency.SOLUTION: The controller 27 of a hydraulic shovel calculates the position of a bucket 8, on the basis of detection results by a revolving speed sensor 25, a boom angle sensor 20, an arm angle sensor 21 and a bucket angle sensor 22, and sets a loading position P1 of an excavated matter and an excavation position P2 of the bucket 8. The controller 27 sets a revolution restricted region including a revolution stopping region A1 and a revolution deceleration region A2, on the basis of the loading position P1 and the excavation position P2. When the bucket 8 is positioned in the revolution deceleration region A2, the controller decelerates the revolution of a revolving body 2, and when the bucket 8 is positioned in the revolution stopping region A1, the controller stops the revolution of the revolving body 2, and renews a boundary between the revolution stopping region A1 and the revolution deceleration region A2, according to the revolution speed of the revolving body 2 detected by the revolving speed sensor 25.SELECTED DRAWING: Figure 3 【課題】作業効率の低下を防ぎつつ、バケットと運搬車両の荷台との衝突を回避することができる油圧ショベルを提供する。【解決手段】油圧ショベルのコントローラ27は、旋回速度センサ25、ブーム角度センサ20、アーム角度センサ21、及びバケット角度センサ22の検出結果に基づいてバケット8の位置を算出すると共に、掘削物の積込位置P1及びバケット8の掘削位置P2を設定する。コントローラ27は、積込位置P1と掘削位置P2とに基づいて、旋回停止領域A1及び旋回減速領域A2からなる旋回制限領域を設定して、バケット8の位置が旋回減速領域A2にある場合には、旋回体2の旋回を減速させ、バケット8の位置が旋回停止領域A1にある場合には、旋回体2の旋回を停止させると共に、旋回速度センサ25で検出された旋回体2の旋回速度に応じて、旋回停止領域A1と旋回減速領域A2との境界を更新する。【選択図】図3
Bibliography:Application Number: JP20190176198