Tuesday, March 3, 2015

Rolling lift bridges of the world - 2

Imagine my surprise on arriving at Hobart to find a rolling lift bridge almost identical to the one in Auckland harbour.  In Auckland I had no idea how the bridge worked but this time I had a basic understanding so I made an effort to photograph the important details.


Side elevation showing the concrete counterbalance in the elevated position.



The drive shaft and pinion.

The rolling rack mechanism.

The photo of the steam crane is gratuitous.