Baumaschine

Details

Veröffentlichungs-Nr.

EP4768669

Anmeldetag

27. September 2024

Veröffentlichung

3. April 2025

Rechtsraum

EP

Abstract

The construction machine includes a flow control valve as a hydraulic equipment that adjusts the flow rate supplied to the hydraulic cylinder for driving the work implement, and a controller that controls the hydraulic cylinder to meet the condition that the work tool does not move beyond the target surface. The controller calculates the target speed of the hydraulic cylinder such that the work tool meets the condition, based on the detection information of the detection device that detects the posture of the work implement and the information of the target surface. Then, if the target value of the hydraulic equipment corresponding to the calculated target speed is smaller than the lower limit value that can ensure the accuracy of flow rate control, the controller recalculates the target speed of the hydraulic cylinder such that the work tool meets the condition based on the limit speed of the hydraulic cylinder obtained from the lower limit value, and controls the hydraulic equipment by the target value corresponding to the recalculated target speed.

Anmelder

Firma

Hitachi Construction Machinery Co., Ltd.

Land

🇯🇵 Japan