To provide a hydraulic shovel which can automatically make an upper revolving body stop over a new trolley at a respective adequate discharging position of the sediment and discharge sediment even when a sediment discharge position is deviated because of a replacement of trolleys, for excavating/sediment discharging operation to excavate object such as sediment and like to be excavated and to discharge the sediment to the trolley.SOLUTION: An angle between a sediment discharging position which is a revolving angle of an upper revolving body when a specific operation (bucket opening, etc.) is carried out at the sediment discharging position (S2, S3) and an excavating position which is a revolving angel of the upper revolving body when a specific operation (surface excavating, etc.) is carried out at the excavating position (S4, S5) is memorized as a target revolving angle (S6). The upper revolving body 5 starts to revolve when an operation lever 15 for revolving is continuously operated for one second (S7), and is made stopped when an actual revolving angle reaches the target revolving angle (S10, S11). A new target revolving angle is calculated/memorized (S2-S6) after the target revolving angle is deleted in a case that a reset button 20 is operated because of a replacement of the trolleys (S13).SELECTED DRAWING: Figure 3
【課題】土砂等の掘削物を掘削して運搬車に放土する掘削・放土作業において、運搬車の入れ替えにより土砂を放土すべき放土位置がずれた場合であっても、新たな運搬車に対応する適切な放土位置で上部旋回体を自動的に停止させて土砂を放土できる油圧ショベルを提供する。【解決手段】放土位置での特定操作(バケット開等)が行われたときの上部旋回体の旋回位置を放土位置とし(S2,3)、掘削位置での特定操作(地面の掘削等)が行われたときの上部旋回体の旋回位置を掘削位置とし(S4,5)、その間の角度を目標旋回角度として記憶する(S6)。旋回のために操作レバー15が1sec間継続して操作されると上部旋回体5の旋回を開始し(S7)、実旋回角度が目標旋回角度に達した時点で旋回を停止させる(S10,11)。運搬車の入れ替えによりリセットボタン20が操作されると目標旋回角度を消去し(S13)、新たな目標旋回角度を算出・記憶する(S2〜6)。【選択図】図3
HYDRAULIC SHOVEL
油圧ショベル
2019-04-04
Patent
Electronic Resource
Japanese