DEVICE FOR INDICATING APPEARANCE OF MAN IN CRANE WORKING ZONE

FIELD: materials handling facilities; safety engineering. ^ SUBSTANCE: proposed device contains sensitive element interacting with control elements and installed in lower part of object housing, and warning unit placed in control circuit. Voltage source 1 is electrically connected with input of reve...

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Bibliographic Details
Main Authors SHABROV S.V, SHABROV D.V, SHKRABAK V.S, SHKRABAK V.V, SHKRABAK R.V, ZUEV V.A
Format Patent
LanguageEnglish
Russian
Published 27.12.2005
Edition7
Subjects
ALARM SYSTEMS
CRANES
HAULING
HOISTING
LIFTING
LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES
ORDER TELEGRAPHS
PERFORMING OPERATIONS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TRANSPORTING
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Summary:FIELD: materials handling facilities; safety engineering. ^ SUBSTANCE: proposed device contains sensitive element interacting with control elements and installed in lower part of object housing, and warning unit placed in control circuit. Voltage source 1 is electrically connected with input of reversible travel motion starter 2 with normally closed contacts 3 whose output is connected at one side with time delay relay 4 with its power contacts 5 and through normally closed contact of cutoff relay 6, with step-down transformer 7 whose output is connected with series-connected sensitive element 8, signaling relay 9 with normally-open power contacts 10, red warning lamp 11 and howler 12, and at other side, with travel motion control contactor 13 and travel motion motor 14. Time relay 4 is connected through green lamp 15, and load grip switch 16 with series-connected load grip control contactor 17, reversible load grip control starter 18 and load grip motor 19. Sensitive element is made in form of infra-red radiation pickup. ^ EFFECT: simplified design. ^ 2 cl, 1 dwg
Bibliography:Application Number: RU20040111248