The machine I have been running, we call an RLPI or "Rail Lifter/Plate Inserter". That workhead on the front has clamps that grab the rail, and then hydraulic jacks that lift the rail up off the new tie. Then the arms on the outside of the workload slide the new plates under the rail. It's one of the more difficult machines to operate because you're working in three planes, all at once, on both rails at the same time.Across the county road in front of our property are railroad tracks where I've seen just about every kind of rail repair equipment that has ever been used, the top machine looks like the one that came by that compacted the gravel between ties, track grinders were interesting to watch. What I missed were the flat cars bringing in the really long tracks that were welded together for long unbroken tracks which certainly quieted down the trains traveling by, no more joint clanking unless some of the train wheels have flat spots on them. By the way, good for you on the job upgrade.
The machine you spoke of compacting the rock is a Tie Maintenance Tamper. I qualified on one of those 6 or 7 years ago. It's a good job but it gets boring.
The rail trains are interesting for sure. I've only worked with them a couple times. It's a good way to get really hurt if you don't know what you're doing, so I tend to stay away from them. For my employer, the continuously welded rail sticks are 1400 feet long and installing them gets more technical than I'm comfortable with. I'm more like the guy you call when you need a strong back and a weak mind...
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