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Blog Entry# 645703
Posted: Jan 19 2013 (11:24)
13 Responses
Last Response: Jan 26 2013 (19:02)
13 Responses
Last Response: Jan 26 2013 (19:02)
why there are 6 coupling tubes in rajdhani (as seen in photo) & just 2 in regular express trains?
8 Posts
I think this article can somewat help us
"The automatic center buffer coupler of AAR tight lock type at the coach end has a support frame which is providing an anti-climbing protection. The coupler can be opened from the side by a lever. The design allows the use of screw coupler instead of center buffer coupler. Therefore a fixing plate for buffers is also provided. The inter-vehicle coupler for the supply of the 750 V from the generator car is located below the under-frame. Due to the moving situation 4 brake hoses are to be used at the coach end which are brought to two hoses behind the couple"
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"The automatic center buffer coupler of AAR tight lock type at the coach end has a support frame which is providing an anti-climbing protection. The coupler can be opened from the side by a lever. The design allows the use of screw coupler instead of center buffer coupler. Therefore a fixing plate for buffers is also provided. The inter-vehicle coupler for the supply of the 750 V from the generator car is located below the under-frame. Due to the moving situation 4 brake hoses are to be used at the coach end which are brought to two hoses behind the couple"
Source...
more...
Just a guess... probably 3 for each side related to brakes, and possible fail safe/redundant backups? I've also noticed such coupling between electric/diesel locos in tandem. My understanding of those is to do with control of engines symmetrically from front engine. I would be v. happy for additional info on this.. Thanks for the post