Motor grader 3D grade control

US11225772B2 · kind B2 · utility

Assignee

• Caterpillar Trimble Control Technologies LLC · US

Inventors

• Nathan Ennis · Washington, US
• Patrick Pecchio · Peoria, US
• Geoffrey Mills · Nelson, NZ
• Christopher A. Padilla · Chillicothe, US
• Yongliang Zhu · Dunlap, US
• Jason Hill · Superior, US
• Colin Daniell · Christchurch, NZ
• Shawn Zeller · Peoria, US

Key dates

• Filing date: Jan 6, 2020
• Grant date: Jan 18, 2022
• Expiry date: Apr 22, 2040

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E02F3/7636
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

Systems and methods for providing grade control on a motor grader without the use of masts attached to the blade. Embodiments include a body angle sensor configured to detect movement of a construction machine's body, a front 3D positioning device configured to detect a geospatial position of the construction machine's body within a world space, a drawbar angle sensor configured to detect movement of the construction machine's drawbar, and a blade angle sensor configured to detect movement of the construction machine's blade. Two positions on the blade may be calculated first within a machine space and subsequently within the world space. Movement of at least one articulating connection may be caused based on the blade positions within the world space.