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Document ID (ISN)34191
CIS number 80-1502
ISBN(s) 951-801-155-9
Year 1979
Convention or series no.
Author(s) Klen T., Verho E.
Title Clamps in plate handling
Original title Levyjen kńsittely tarraimilla [in Finnish]
Bibliographic information Tutkimuksia 158/1979, Ty÷terveyslaitos, Laajaniityntie 1, 01620 Vantaa 62, Finland, 1979. 71p. Illus. 22 ref. Price: Fmk.20.00
Abstract Literature survey of basic types of lifting tongs and clamps for steel plate handling and test reports on 9 clamps with capacities from 0.15 to 2.5Mp with some examples of accidents which have occurred with this equipment. Considered are: pressing force produced by various devices; friction between load and clamp surfaces; gripping force/tensile load ratio of screw pressure clamps (sheet grabs). Factors affecting clamp safety in a vertical lift were determined by fault-tree analysis, and causes of slipping are considered (incorrect use, faulty design or assembly, poor maintenance, inadequate inspection, environmental changes, variation of friction conditions due to lateral forces). Lubrication had no effect on gripping safety, but one clamp with rubber-coated jaws was found unsafe.
Descriptors (primary) handling clamps and hooks; sheet materials handling; accident research; hazard evaluation; lifting equipment
Descriptors (secondary) literature survey; report; in-plant transport; equipment testing; handling and stacking; accident descriptions; handling by crane
Document type E - Books, reports, proceedings
Subject(s) Materials handling and storage
Broad subject area(s)
Browse category(ies) Accident research
Risk evaluation