Soil processing machine and method for operating a soil processing machine

US11976426B2 · kind B2 · utility

Assignee

• Hamm AG · DE

Inventors

• Thomas Klein · Wehr, DE
• Stefan Braunschläger · Bärnau, DE
• Ronny Pieske · Zwönitz, DE
• Michael Sperber · Bayreuth, DE
• Josef Dagner · Altenstadt, DE

Key dates

• Filing date: Oct 20, 2022
• Grant date: May 7, 2024
• Expiry date: Oct 20, 2042

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60Y2200/413
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A soil processing machine, in particular a soil compactor, includes at least one drive roller and an electrohydraulic drive system for driving at least one drive roller. The drive system has a traction hydraulic circuit having at least one hydraulic motor and at least one hydraulic pump. The circuit includes a first line region between a first connection fitting of the at least one hydraulic pump and a first connection fitting of each hydraulic motor to drive the at least one drive roller in a first rotatable direction and a second line region between a second connection fitting of the at least one hydraulic pump and a second connection fitting of each hydraulic motor to drive the at least one drive roller in a second, opposite rotatable direction. A valve assembly is provided with each line region for selectively interrupting and releasing a fluid flow connection between the at least one hydraulic pump and at least one hydraulic motor.