Road milling machine and method for measuring the milling depth

US8246270B2 · kind B2 · utility

Assignee

• Wirtgen GmbH

Inventors

• Christian Berning · Euskirchen, DE
• Dieter Simons · Kürten, DE

Key dates

• Filing date: Dec 20, 2007
• Grant date: Aug 21, 2012
• Expiry date: Aug 14, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B5/18
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

In a self-propelling road milling machine (1), particularly a (recycler or) cold-milling machine, comprising a machine frame (4) carried by a track assemblies (2,3) via lifting columns (12,13), a milling roll (6) supported on the machine frame (4) for treatment of a ground or traffic surface (8), height-adjustable side plates (10) for edge protection, arranged to rest on the ground or traffic surface (8) to be treated, a height-adjustable stripping means (14) arranged in the moving direction behind the milling roll (6) and adapted to be lowered, during operation, into the milling track (17) generated by the milling roll (6), and a control means (23) for controlling the milling depth of the milling roller (6), it is provided that at least one measuring means (16) is operative to detect the lifting, caused by the current milling depth, of a first sensor means resting on the ground or traffic surface (8), and/or the lowering of the stripping means (14) or a second sensor means onto the surface of the milling track (17), the control means (23) obtaining the current milling depth at the level of the stripping means (14) of the milling roller (6) or of the second sensor means from the me…