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A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide a turning device and a work machine capable of suppressing an electric motor from overheating in press turning, and also hardly causing a deficient in turning torque.SOLUTION: A turning device according to an embodiment has: an output shaft turning a turning body; an electric motor capable of driving the output shaft; a hydraulic motor capable of driving the output shaft; a hydraulic pump capable of supply pressure oil to the hydraulic motor; and a control unit. In the case of determining, as a driving state of the turning body, a press turning state in which the turning body substantially does not turn while turning torque is applied to the turning body, the control unit makes the output torque of the electric motor lower and the pressure of the pressure oil of the hydraulic pump higher than when the turning body turns according to the turning torque.SELECTED DRAWING: Figure 1
【課題】押し付け旋回時に、電気モータの過熱を抑制することができるとともに、旋回トルクの不足が生じにくい旋回装置および作業機械を提供することである。【解決手段】実施形態の旋回装置は、旋回体を旋回させる出力軸と、前記出力軸を駆動可能な電気モータと、前記出力軸を駆動可能な油圧モータと、前記油圧モータに圧油を供給可能な油圧ポンプと、制御部とを持つ。前記制御部は、前記旋回体の駆動状態として、前記旋回体に旋回トルクが与えられた状態で前記旋回体が実質的に旋回しない押し付け旋回の状態が判定された場合に、前記旋回トルクに応じて前記旋回体が旋回する場合に比べて、前記電気モータの出力トルクを低下させるとともに、前記油圧ポンプの前記圧油の圧力を増加させる。【選択図】図１
PROBLEM TO BE SOLVED: To provide a turning device and a work machine capable of suppressing an electric motor from overheating in press turning, and also hardly causing a deficient in turning torque.SOLUTION: A turning device according to an embodiment has: an output shaft turning a turning body; an electric motor capable of driving the output shaft; a hydraulic motor capable of driving the output shaft; a hydraulic pump capable of supply pressure oil to the hydraulic motor; and a control unit. In the case of determining, as a driving state of the turning body, a press turning state in which the turning body substantially does not turn while turning torque is applied to the turning body, the control unit makes the output torque of the electric motor lower and the pressure of the pressure oil of the hydraulic pump higher than when the turning body turns according to the turning torque.SELECTED DRAWING: Figure 1
【課題】押し付け旋回時に、電気モータの過熱を抑制することができるとともに、旋回トルクの不足が生じにくい旋回装置および作業機械を提供することである。【解決手段】実施形態の旋回装置は、旋回体を旋回させる出力軸と、前記出力軸を駆動可能な電気モータと、前記出力軸を駆動可能な油圧モータと、前記油圧モータに圧油を供給可能な油圧ポンプと、制御部とを持つ。前記制御部は、前記旋回体の駆動状態として、前記旋回体に旋回トルクが与えられた状態で前記旋回体が実質的に旋回しない押し付け旋回の状態が判定された場合に、前記旋回トルクに応じて前記旋回体が旋回する場合に比べて、前記電気モータの出力トルクを低下させるとともに、前記油圧ポンプの前記圧油の圧力を増加させる。【選択図】図１
SWING DEVICE AND WORK MACHINE
旋回装置および作業機械
NISHITANI KEISUKE (author)
2016-12-08
Patent
Electronic Resource
Japanese
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