Drive system, in particular for a self-propelled construction machine, especially a soil compactor

US9499947B2 · kind B2 · utility

Assignee

• Hamm AG · DE

Inventors

• Andreas Rohr · Idar-Oberstein, DE
• Thomas Henker · Tirschenreuth, DE
• Ronny Pieske · Zwönitz, DE

Key dates

• Filing date: Dec 17, 2014
• Grant date: Nov 22, 2016
• Expiry date: Dec 17, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/62
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A drive system, in particular for a self-propelled construction machine, especially a soil compactor, comprising a drive unit, at least one hydraulic circuit with a hydraulic pump drivable by the drive unit, as well as a hydraulic drive support unit with a hydraulic pump/motor assembly and at least one compressed fluid reservoir, wherein the hydraulic pump/motor assembly is, or can be, drivingly coupled to the drive unit and/or to at least one hydraulic circuit, wherein the hydraulic pump/motor assembly can be operated in a charging operating mode as a pump by means of the drive unit and/or by means of at least one hydraulic circuit for charging at least one compressed fluid reservoir, and which is drivable in a drive support state as a motor to provide a drive support torque for the hydraulic pump of at least one hydraulic circuit, is characterized in that a maximum drive torque provided by the drive unit is smaller than a maximum request torque to be applied for operating at least one hydraulic circuit.