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Loads applied to fixations for chain stretching

Journal Article:

Abstract

The chains of scraper chain conveyors must be pre-stretched during standstill in order to compensate the elongations occurring during operation. They require frequent retensiening in order to meet the varying operational requirements. During tensioning, the chains are fixed in a point in the top run by means of fixation elements. The authors present a method for calculating the retaining force needed in the fixations. There are three different initial conditions of the chain before trensioning: Tensionsfree chain, pretensioned chain (stressed chain), slack chain. In all three cases, it is important to find out whether or nor the tensioning drive reaches full speed. The method of calculation is illustrated by the example of a scraper chain conveyor; it enables the establishment of rules for tensioning without damaging the chain and is a good basis for the dimensioning of new types of fixation elements.
Publication Date:
Jun 01, 1985
Product Type:
Journal Article
Reference Number:
FRG-84-12426; EDB-86-010549
Resource Relation:
Journal Name: Glueckauf-Forschungsh.; (Germany, Federal Republic of); Journal Volume: 46:3
Subject:
42 ENGINEERING; CHAIN CONVEYORS; DYNAMIC LOADS; MACHINE PARTS; ELONGATION; MECHANICAL TESTS; CALCULATION METHODS; FASTENING; LOAD ANALYSIS; MATHEMATICAL MODELS; STRAINS; UNDERGROUND MINING; CONVEYORS; EQUIPMENT; FABRICATION; HAULAGE EQUIPMENT; JOINING; MATERIALS HANDLING EQUIPMENT; MATERIALS TESTING; MINING; TESTING; 422000* - Engineering- Mining & Underground Engineering- (1980-); 420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)
OSTI ID:
6345238
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Journal ID: CODEN: GKFRA
Submitting Site:
HEDB
Size:
Pages: 133-142
Announcement Date:

Journal Article:

Citation Formats

Ahrens, K, and Brychta, P. Loads applied to fixations for chain stretching. Germany: N. p., 1985. Web.
Ahrens, K, & Brychta, P. Loads applied to fixations for chain stretching. Germany.
Ahrens, K, and Brychta, P. 1985. "Loads applied to fixations for chain stretching." Germany.
@misc{etde_6345238,
title = {Loads applied to fixations for chain stretching}
author = {Ahrens, K, and Brychta, P}
abstractNote = {The chains of scraper chain conveyors must be pre-stretched during standstill in order to compensate the elongations occurring during operation. They require frequent retensiening in order to meet the varying operational requirements. During tensioning, the chains are fixed in a point in the top run by means of fixation elements. The authors present a method for calculating the retaining force needed in the fixations. There are three different initial conditions of the chain before trensioning: Tensionsfree chain, pretensioned chain (stressed chain), slack chain. In all three cases, it is important to find out whether or nor the tensioning drive reaches full speed. The method of calculation is illustrated by the example of a scraper chain conveyor; it enables the establishment of rules for tensioning without damaging the chain and is a good basis for the dimensioning of new types of fixation elements.}
journal = {Glueckauf-Forschungsh.; (Germany, Federal Republic of)}
volume = {46:3}
journal type = {AC}
place = {Germany}
year = {1985}
month = {Jun}
}