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In some industries there is a need to build in some type of quick release system for the fixing system to make them both fast and safe to install and use. Sometimes this is an easy task and other times it is not so easy. The one certain factor is that in many cases it has to be one hundred percent reliable and there must be no possibility that the quick and easy solution will cause safety problems of any kind.
The railway industry is one of those areas where certain systems have been introduced that require an amount of quick release properties built into their construction. This is very true when it comes to fastening and securing the rails themselves onto the track. Railway tracks by definition require to be fitted very securely to the sleepers so that there is no chance of moving, any loose rail would cause a major railway disaster and this has happened many times all over the world and must not re-occur.
One system that was developed was the use of the Lindapter BR rail clip which it must be imagined was named after the old days of British Rail. These clips are made from malleable iron with a bright zinc plated finish from a hot dipping galvanised method. The material gives then a very strong protection against the sudden pressures caused by the travel of a train over the rails. The clip is a fairly simple but very sensible design. A bolt though the sleeper passes through the clip and a large nut is screwed onto the end, a spanner is then used to pull the clip down onto the flange of the rail, which has already been placed into position. The clip has a strong grip surface and the shape is such that there is a flange which stops the clip rotating during tightening. The clips are placed at a suitable distance apart as calculated by the railway designer and they are placed on both sides of the rail to clamp it fully onto position. This means that the whole rail is clamped fully onto each sleeper along its length, any expansion will occur by the sleepers moving slightly.
The problem with any rail network is that the rails wear or deform with continuous usage and there must be both a regular maintenance programme that changes individual rails as well a full line replacement. An individual replacement rail must be carried out quickly as this will be an emergency and the line must be restored quickly, a full line replacement will happen on a line closure but time constraints require it to be carried out quickly, the BR rail clip does just that.
For more information on fixings and fasteners why not take a look at Fix8.co.uk. For a large selection of Socket Screws and Lindapter Fixings visit Fix8 Ltd
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