Verbesserte Arbeitsmaschine und Steuerungsverfahren dafür

Details

Veröffentlichungs-Nr.

EP4660381

Aktenzeichen

EP25180322

Anmeldetag

3. Juni 2025

Veröffentlichung

10. Dezember 2025

Rechtsraum

EP

IPC

E02F3/84E02F9/22

Abstract

A work machine (1) comprising a body (2), a dozer blade (20) movably carried by the body (2), a hydraulic actuator (22) interposed between the body (2) and the dozer blade (20), a hydraulic arrangement (24) configured to provide pressurized hydraulic fluid towards the hydraulic actuator (22) and comprising: a source of pressurized hydraulic fluid (25), at least one main control valve (30), which is fluidly interposed between the source of pressurized hydraulic fluid (25) and the hydraulic actuator (22), and is configured to control the flow of pressurized hydraulic fluid fed towards the first inlet and/or the second inlet of the hydraulic actuator (22), two hydraulic lines (32, 33) fluidly connecting the main control valve (30) with the two inlets of the hydraulic actuator (22), at least one check valve (35) arranged along the first hydraulic line (32) or the second hydraulic line (33), a pilot circuit (37) configured to actuate said main control valve (30), and comprising a floating control stage (45) configured to realize a floating function of the dozer blade of the hydraulic actuator (22) with the tank (28), and is configured to open the check valve (35).

Anmelder

Firma

CNH Industrial Italia S.p.A.

Land

🇮🇹 Italien

Fachgebiete