Device for detecting the tension of scraper chains

US7117989B2 · kind B2 · utility

Assignee

• DBT GMBH · DE

Inventors

• Wilfried Weigel · Werne, DE
• Gerold Wendler · Voerde, DE
• Karl-Heinz Schurer · Herne, DE

Key dates

• Filing date: Jul 16, 2004
• Grant date: Oct 10, 2006
• Expiry date: May 11, 2025

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65G23/44
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A device for detection and adjustment of the tension of a scraper chain of a chain conveyor, in particular of a face conveyor, having a tensionable return station, on which a spoked chainwheel to reverse the scraper chain, having chain links and scrapers attached thereto, is supported between the bottom race and the top race. The devices including a sensor which determines the tension of the scraper chain at the return station and the sensor having a swivellable sensor body coupled with a shaft encoder. The sensor body being in the top race and in contact with the upper face of the scraper chain in a measurement zone with provision being made in the measuring zone for vertical play for the run of the scrapers and/or the chain links.