HYDRAULIC SHOVEL WITH SUSPENSION TOOL

PROBLEM TO BE SOLVED: To provide a hydraulic shovel with a suspension tool capable of urging an operator to start a suspension work mode, in the case where the possibility that suspension work is being performed even though it is in a suspension work mode stop state is high.SOLUTION: A controller 64...

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1. Verfasser: HOSHINO YASUMASA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a hydraulic shovel with a suspension tool capable of urging an operator to start a suspension work mode, in the case where the possibility that suspension work is being performed even though it is in a suspension work mode stop state is high.SOLUTION: A controller 64 of a hydraulic shovel 2 with a suspension tool includes: a position calculation part 80 for calculating the position of a suspension tool 20 with time; and a load calculation part 82 for calculating a load acting on the suspension tool 20 with time. In a suspension work mode stop state, the controller 64 actuates alarm means in the case where it has determined that the suspension tool 20 has started to elevate from the stop state, based on the position calculated by the position calculation part 80 with time, and it has determined that the load acting on the suspension tool 20 has increased by a predetermined value or greater from the load at the elevation start time, based on the load calculated by the load calculation part 82 with time.SELECTED DRAWING: Figure 3 【課題】吊り作業モード停止状態であるにも拘わらず吊り作業が行われている可能性が高い場合には、吊り作業モードを起動させることを運転員に促すことができる吊り具付き油圧ショベルを提供する。【解決手段】吊り具付き油圧ショベル2のコントローラ64は、吊り具20の位置を経時的に算出する位置算出部80と、吊り具20に作用する荷重を経時的に算出する荷重算出部82とを含む。コントローラ64は、吊り作業モード停止状態において、位置算出部80によって経時的に算出された位置に基いて、吊り具20が停止状態から上昇を開始したと判定し、且つ荷重算出部82によって経時的に算出された荷重に基いて、吊り具20に作用する荷重が上昇開始時における荷重から所定値以上増加したと判定した場合に警告手段を作動させる。【選択図】図3