Sensor for harvesting machines

US6146268A · kind A · utility

Assignee

• CLAAS Selbstfahrende Erntemaschinen GmbH · DE

Inventors

• Willi Behnke · Steinhagen, DE
• Ralf Hubner · Frankfurt, DE
• Wolfram Damm · Dresden, DE
• Harald Muller · Schlangenbad, DE
• Gerd Bernhardt · Daun, DE

Key dates

• Filing date: Jun 12, 1998
• Grant date: Nov 14, 2000
• Expiry date: Jun 12, 2018

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01D41/1273
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a sensor for determining the structure-borne sound vibrations generated by the impingement of grains on a pulse detector in an agricultural machine for harvesting crops and to a device for operational monitoring of the sensor and improved signal evaluation. Such sensors are used to monitor threshing and separating performance at various points in a harvesting machine. Depending on the area of application, various forms of a pulse detector are used. These can have the shape of a plate, a tube, a rod or other similar profiles. Attached to these detectors are vibration detectors. A particularly strong connection between the vibration detector and the pulse detector is achieved by using a piezo-ceramic vibration sensor and its attachment by means of a screw connection.