Method for calculating characteristic geometrical or control variables of a three point hitch

US10098272B2 · kind B2 · utility

Assignee

• Deere & Company · US

Inventors

• Martin Kremmer · Mannheim, DE
• Valentin Gresch · Kaiserslautern, DE

Key dates

• Filing date: Oct 20, 2017
• Grant date: Oct 16, 2018
• Expiry date: Oct 20, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60D1/48
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method is provided for calculating characteristic geometrical or control variables of a three-point hitch for an agricultural tractor in which the hitch includes a lifting strut having a mounting position which is adjustable by means of a lifting arm in one of a plurality of receiving holes formed in a lower link and the hitch is pivotable by the lifting strut. The method includes moving the lower link initially into a horizontal angle position α=0 and capturing the corresponding angular position Px, Pz of the lifting arm and a corresponding angular position γ of the lifting strut relative to the vertical. The method further includes determining which of the receiving holes satisfies a geometrical constraint condition and determining the mounting position of the lifting strut on the lower link.