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may use a current collector system to provide power over the full length of their operating area. The current collector assembly use sliding shoes that run on rails. Depending on the size of crane, contact rails may be copper wires, copper bars, or steel channels. mounted on insulating supports. Two
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so it maintains contact with small studs in the road placed at large intervals. A single ski was as long as 12 feet (3.7 m) in some systems. Stud contact systems were short-lived due to safety issues with the studs. They were supposed to be electrified only when compatible vehicles passed over
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Typically, electric current connectors have one or more spring-loaded arms that press a collector or contact shoe against the rail or overhead wire. As the vehicle moves, the contact shoe slides along the wire or rail to draw the electricity needed to run the vehicle's motor.
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rails are used for DC supply, and three for three-phase AC, with grounding of the crane through contact with the runway rails. The contact rails are mounted out of the reach of people working in the area to prevent an electric shock hazard.
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Most overhead supply systems are either DC or single phase AC, using a single wire with return through the grounded running rails.
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to the electrical equipment of the vehicles. Those for overhead wires are roof-mounted devices, those for rails are mounted on the
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261:. The current collection device presses against the underside of the lowest wire of an overhead line system, which is called a
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This article is about sliding contacts for transmitting electric power to vehicles. For a connection to a transistor, see
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contact wheel mounted on top of the trolley pole instead of a trolley shoe. The trolley pole wheel somewhat resembles a
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them, but the studs often malfunctioned and remained electrified continuously, posing an electrocution hazard.
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Electrifying the streets: the surface-contact controversy in give
English towns 1880-1920
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on the vehicle's roof, side or base. An insulated cable connects the collector with the
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bogie. Between the two large tires, a contact shoe touches the guidebar and
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carry collector or contact shoes, or paddles (the name used by
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J Baggs (March 9, 2006), "5.1 Ground Level Power Supply",
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Device that carries electrical power from lines or rails
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Electric vehicles that collect their current from an
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71:. Unsourced material may be challenged and removed.
147:Trolley pole wheel on top of the trolley pole of
625:Third-rail contact shoe installed on the front
249:system use different forms of one- or two-arm
158:(often called a "pickup") is a device used in
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570:A contact shoe for top-contact third rail on
527:A long and narrow contact shoe shaped like a
467:systems. A pair of contact shoes was used on
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754:Wire-Free Traction System Technology Review
415:. Trolley pole wheels are now rarely used.
321:with trolley-type current collectors, i.e.
36:Electrode § Structure of the electrode
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272:use a pair of overhead wires, and paired
131:Learn how and when to remove this message
34:. For a battery electrode component, see
149:Twin City Rapid Transit Company No. 1300
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689:List of railway electrification systems
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306:" collector with double collector shoes
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469:underground current collection systems
463:. A vertical contact shoe is used on
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699:Pantographs and underbody collectors
471:. Contact shoes may also be used on
69:adding citations to reliable sources
724:Gerry Colley (November 27, 2014),
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431:. It has a contact shoe on top.
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1107:Railway electrification systems
704:Railway electrification systems
205:The current collector arms are
56:needs additional citations for
511:. A contact shoe is used as a
503:. Trams or trolleybuses use a
344:on a small electric locomotive
1:
507:trolley shoe at the end of a
1112:Tram electrification systems
927:Electro-diesel multiple unit
610:car making contact with the
427:is the pole at the end of a
291:Overhead current collectors
192:ground-level power supplies
32:Bipolar junction transistor
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882:Conduit current collection
674:Conduit current collection
576:Norristown High Speed Line
29:
922:Electro-diesel locomotive
902:Railway electric traction
872:Ground-level power supply
519:of a rubber-tired metro.
578:(third rail not visible)
473:overhead conductor rails
392:Toronto streetcar system
280:Electric overhead cranes
1133:Electric rail transport
852:Railway electrification
807:Railway electrification
739:10.21954/ou.ro.0000d65c
633:car for operation into
439:Electric railways with
207:electrically conductive
953:Traction power network
917:Electric multiple unit
762:Edinburgh Tram Network
606:The contact shoe of a
590:The contact shoe on a
390:on a streetcar of the
270:Three phase AC systems
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963:Traction powerstation
635:New York Penn Station
251:pantograph collectors
241:Pantographs and poles
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654:electrically grounds
533:stud contact systems
491:. Most railways use
168:electric locomotives
65:improve this article
958:Traction substation
912:Electric locomotive
877:Stud contact system
461:rubber-tired metros
80:"Current collector"
937:Rubber-tyred metro
814:Current collectors
650:rubber-tyred metro
497:London Underground
405:trolley pole wheel
399:Trolley pole wheel
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361:Taunus Wunderland
235:electrical return
156:current collector
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121:February 2022
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82: –
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77:
76:Find sources:
70:
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60:
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54:This article
52:
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43:
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37:
33:
19:
932:Multi-system
836:Contact shoe
831:Trolley pole
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509:trolley pole
495:, while the
489:trolleybuses
445:fourth rails
438:
435:Contact shoe
424:
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404:
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388:trolley pole
319:Trolleybuses
278:
267:
263:contact wire
244:
209:but mounted
204:
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160:trolleybuses
155:
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127:
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108:
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63:Please help
58:verification
55:
1071:Switzerland
1061:Former USSR
1034:New Zealand
867:Fourth rail
679:Electromote
669:Bumper cars
592:Chicago 'L'
553:Metro-North
523:Contact ski
493:three rails
465:fourth rail
441:third rails
364: [
357:Bumper cars
233:act as the
227:steel rails
219:transformer
188:third rails
186:, electric
972:By country
862:Third rail
826:Pantograph
711:References
612:third rail
608:NYC Subway
556:M8 railcar
501:four rails
477:guide bars
457:guide bars
429:bumper car
304:pantograph
91:newspapers
1024:Lithuania
979:Australia
907:Power car
684:Guide bar
211:insulated
174:to carry
1127:Category
1044:timeline
1029:Malaysia
662:See also
656:the car.
370:showing
1081:Ukraine
999:Germany
989:Estonia
984:Austria
505:grooved
409:grooved
229:of the
182:) from
180:current
105:scholar
1076:Turkey
1066:Sweden
1056:Russia
1051:Poland
1039:Norway
1019:Latvia
994:France
631:RTL-II
629:of an
513:ground
479:or on
453:bogies
413:pulley
231:tracks
225:. The
215:switch
196:bogies
107:
100:
93:
86:
78:
1100:Lists
1014:Japan
1004:India
758:(PDF)
731:(PDF)
627:bogie
572:SEPTA
499:uses
485:trams
475:, on
449:MARTA
407:is a
368:]
223:motor
190:, or
164:trams
112:JSTOR
98:books
1009:Iran
517:rail
403:The
282:and
172:EMUs
170:and
84:news
735:doi
594:car
574:'s
529:ski
487:or
459:on
443:or
359:at
325:on
257:or
221:or
67:by
1129::
760:,
733:,
648:A
423:A
386:A
366:de
340:A
276:.
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154:A
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119:(
109:·
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