Hydraulisches System, Energierückgewinnungsverfahren und Baumaschine

Details

Veröffentlichungs-Nr.

EP4790193

Anmeldetag

25. August 2025

Veröffentlichung

12. August 2026

Rechtsraum

EP

IPC

E02F9/22

Abstract

The invention discloses a hydraulic system, an energy recovery method and a construction machine. The hydraulic system includes: a front pump used for driving a first working device; a rear pump used for driving a second working device. The front pump and the rear pump are connected coaxially and are in transmission connection with an output end of a motor. The second working device includes a third direction valve, an inlet of the third direction valve is connected to an outlet of the rear pump, and a working port of the third direction valve is connected to a large chamber and a small chamber of a third oil cylinder. When the third oil cylinder retracts under the action of gravity, the rear pump is switched to a motor working condition, hydraulic oil from the large chamber of the third oil cylinder enters the rear pump in the motor working condition through the third direction valve, and the rear pump in the motor working condition is used for driving the front pump and/or the motor. The invention has the characteristics of a simple system structure, short energy recovery paths, a high energy recovery rate, good stability and the like.

Anmelder

Firmen

Jiangsu Advanced Construction Machinery Innovation Center Ltd.
Hangzhou XCMG intelligent technology research institute Co. Ltd

Land

🇨🇳 China

Fachgebiete