You need JavaScript to view this

Investigations into dynamics of a draft of mine cars with two locomotives during electric braking

Journal Article:

Abstract

The computerized simulation of electric braking of a draft of GRANBY-5 mine cars and two locomotives (Ld2 locomotives with LDO30 electric series motors) is discussed. The following stages of simulation are analyzed: constructing a mathematical model of the draft of mine cars during electric (dynamic) braking, equations which describe dynamic states of locomotives, mine cars and electric motors during dynamic braking, equations for stability assessment of the draft during dynamic braking. The analog model for simulation of dynamic braking of the draft is given. Simulation results are shown in 10 diagrams. The WAT-1000 hybrid computer is used. Simulation shows that dynamic braking causes occurrence of maximum forces in the couplers between a locomotive and a mine car. When two locomotives are used the maximum force in couplers is lower than in a draft with one locomotive. Braking distance does not depend on position of locomotives in a draft of mine cars. Doubling draft speed causes braking distance to increase by 4 times. Optimum stability conditions of a draft of mine cars are guaranteed when one locomotive is placed at the draft head and a second is separated from the first one by one third of the draft length. 6 references
Publication Date:
Mar 01, 1983
Product Type:
Journal Article
Reference Number:
EDB-84-060897
Resource Relation:
Journal Name: Mech. Automat. Gorn.; (Poland); Journal Volume: 21:3
Subject:
01 COAL, LIGNITE, AND PEAT; BRAKES; COMPUTERIZED SIMULATION; DYNAMICS; MINE CARS; COAL MINES; ELECTRIC MOTORS; EQUATIONS; HYBRID COMPUTERS; MATHEMATICAL MODELS; MINE HAULAGE; OPERATION; UNDERGROUND MINING; COMPUTERS; EQUIPMENT; HAULAGE EQUIPMENT; MACHINE PARTS; MATERIALS HANDLING; MATERIALS HANDLING EQUIPMENT; MECHANICS; MINES; MINING; MOTORS; SIMULATION; UNDERGROUND FACILITIES; VEHICLES; 012000* - Coal, Lignite, & Peat- Mining
OSTI ID:
5061245
Country of Origin:
Poland
Language:
Polish
Other Identifying Numbers:
Journal ID: CODEN: XYZA8
Submitting Site:
HEDB
Size:
Pages: 19-24
Announcement Date:
Mar 01, 1984

Journal Article:

Citation Formats

Sikora-Iliew, R, Szklarski, L, and Thuc, Thai Duy. Investigations into dynamics of a draft of mine cars with two locomotives during electric braking. Poland: N. p., 1983. Web.
Sikora-Iliew, R, Szklarski, L, & Thuc, Thai Duy. Investigations into dynamics of a draft of mine cars with two locomotives during electric braking. Poland.
Sikora-Iliew, R, Szklarski, L, and Thuc, Thai Duy. 1983. "Investigations into dynamics of a draft of mine cars with two locomotives during electric braking." Poland.
@misc{etde_5061245,
title = {Investigations into dynamics of a draft of mine cars with two locomotives during electric braking}
author = {Sikora-Iliew, R, Szklarski, L, and Thuc, Thai Duy}
abstractNote = {The computerized simulation of electric braking of a draft of GRANBY-5 mine cars and two locomotives (Ld2 locomotives with LDO30 electric series motors) is discussed. The following stages of simulation are analyzed: constructing a mathematical model of the draft of mine cars during electric (dynamic) braking, equations which describe dynamic states of locomotives, mine cars and electric motors during dynamic braking, equations for stability assessment of the draft during dynamic braking. The analog model for simulation of dynamic braking of the draft is given. Simulation results are shown in 10 diagrams. The WAT-1000 hybrid computer is used. Simulation shows that dynamic braking causes occurrence of maximum forces in the couplers between a locomotive and a mine car. When two locomotives are used the maximum force in couplers is lower than in a draft with one locomotive. Braking distance does not depend on position of locomotives in a draft of mine cars. Doubling draft speed causes braking distance to increase by 4 times. Optimum stability conditions of a draft of mine cars are guaranteed when one locomotive is placed at the draft head and a second is separated from the first one by one third of the draft length. 6 references}
journal = {Mech. Automat. Gorn.; (Poland)}
volume = {21:3}
journal type = {AC}
place = {Poland}
year = {1983}
month = {Mar}
}