Hydraulische Steuerungsvorrichtung, Baumaschine und Steuerungsverfahren für eine Baumaschine

Details

Veröffentlichungs-Nr.

EP4752353

Anmeldetag

1. Oktober 2024

Veröffentlichung

24. April 2025

Rechtsraum

EP

IPC

F02D29/00, E02F9/20, F02D29/04

Abstract

A construction machine (1) includes a work device (4), at least one actuator (9, 10, 11) that operates the work device (4), a pump device (15) that supplies hydraulic oil to the at least one actuator (9, 10, 11), and an engine (5) that drives the pump device (15). A hydraulic control device includes a manipulation device (19a, 20a) that receives manipulation for operating the work device (4), and a controller (70). The controller (70) performs engine rotation speed control including heavy load control for adjusting an engine rotation speed to a predetermined base rotation speed (N1) when work by the construction machine 1 is predetermined heavy load work, and light load control for making the engine rotation speed be higher than the base rotation speed (N1) when the work by the construction machine (1) is predetermined light load work.

Anmelder

Firmen

KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
KOBELCO CONSTRUCTION MACHINERY CO., LTD.

Land

🇯🇵 Japan

Fachgebiete