Community Research and Development Information Service - CORDIS


Extensive studies at the test field for belt conveyors of the DMT yielded a number of improvements of belt conveyor components. In response to the demand for a smooth transfer of torque into the belt, so-called FB couplings were devised from the series of TV and TVV couplings. The raw coal guide plate was improved, providing users with three types of transfer points (segmental, sliding and rotating chutes) which guarantee a frictionless transfer of materials, even at varying belt speeds. An electro-pneumatic lifting facility was developed and tested underground, to reduce wear at wipers and detachable belt joints. The introduction of hollow axes in idlers (which are at the same time weight-saving) increased service life by increasing bending resistance. As for the non-detachable belt joints pursuant to DIN 22121, part 2-B, design of a pressure compensation pad for belt vulcanisation helped to increase joint stability by a factor of nearly two. A rig for non-destructive testing of idlers was developed. During the period under review, no safe method of replacing damaged idlers during belt operation was found.

Additional information

Authors: DMT-GESELLSCHAFT FÜR FORSCHUNG UND PRÜFUNG MBH, DMT-Gesellschaft für Forschung und Prüfung mbH, Essen (DE);DMT-GESELLSCHAFT FUR FORSCHUNG UND PRUFUNG MBH, DMT-Gesellschaft fur Forschung und Prufung mbH, Essen (DE)
Bibliographic Reference: EUR 13397 DE (1991) 94 pp., MF, ECU 4
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