Engineering:Gladhand connector
A gladhand connector or gladhand coupler is an interlocking hose coupling fitted to hoses supplying pressurized air from a tractor unit to air brakes on a semi-trailer,[1] or from a locomotive to railway air brakes on railroad cars.[2] Gladhand connectors resemble a pair of "hands shaking" when interlocked, hence the name.[1]
Design
Gladhands are designed to allow the driver to disconnect without a mechanic or tools.[1] They sometimes utilize a quick release style to speed up brake release time.[1] A tractor / trailer typically has two gladhands - one for service brakes and another for emergency brakes.[3] Gladhands are color coded. In North America, service lines are blue and emergency brake lines are red and are standardized by SAE International's standard SAE J318.[4] Outside North America, the supply lines are red and the control lines are yellow, following International Organization for Standardization's standard ISO 1728.[5] The SAE "service" lines are synonymous with the ISO "control" lines and the "emergency" lines are synonymous with ISO "supply" lines.
Mated rubber grommets provide a positive seal.[6] Gladhand couplers are typically genderless or hermaphroditic,[1] allowing them to be freely connected to each other, for example allowing either end of a railcar to be connected to the end of a train. North America has a system of standardized gladhand sizes.[1]
See also
- Air brake (road vehicle)
- Railway air brake
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Bennett, Sean (2007). Modern diesel technology: brakes, suspension, and steering. Clifton Park, NY: Thomson Delmar Learning. p. 54. ISBN 978-1418013721. https://books.google.com/books?id=GhnCCAAAQBAJ&dq=gladhand&pg=PA54. Retrieved December 12, 2015.
- ↑ Pitt, John (2012). USA by rail : plus Canada's main routes (8th ed.). Chalfont St. Peter: Bradt Travel Guides. p. 29. ISBN 978-1841623894.
- ↑ Byrnes, Mike; Publishers, Associates, Inc. (2003). Bumper to bumper : the complete guide to tractor-trailer operations. (4th ed.). Corpus Christi, TX: Mike Byrnes and Associates. p. 165. ISBN 0962168769. https://books.google.com/books?id=IaPxkJE3C6EC&dq=gladhand+trailer&pg=PA165. Retrieved December 12, 2015.
- ↑ "SAE Mobilus". https://saemobilus.sae.org/content/j318_196711.
- ↑ "Iso 1728:2006". http://www.iso.org/iso/catalogue_detail.htm?csnumber=44103.
- ↑ Knapp, Gordon J. (2011). Is Over the Road Trucking for You? (Second ed.). AuthorHouse. p. 193. ISBN 978-1463403324. https://books.google.com/books?id=Oq0G5-rGJb8C&dq=gladhand+rubber&pg=PA193. Retrieved December 12, 2015.
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