Coal unloading: winter freezing and gondola residue
In winter coal freezes slightly, and after a rotary dumper up to 300 kg stays in the wagon body. Railcar vibrators and the Sweeper GT brush machine close both gaps.
Freezing in winter
The longer coal travels in a wagon, the damper it gets — and in freezing weather that moisture freezes and blocks the discharge. The VH-500 delivers impacts of up to 550 J directly to the wagon frame and can work down to −40 °C (with special oil and dried air).
Residue after the rotary dumper
After a rotary dumper turns the wagon over, up to 300 kg of coal can stay on the floor and walls. A crew of four with shovels and crowbars takes up to 20 minutes per gondola. The Sweeper GT does it in 3–5 minutes, with no one inside the wagon body.
Paired with a rotary dumper
Some customers run railcar vibrators together with a rotary dumper to empty wagons completely. Work is now under way to introduce the VH-500R — vibrators built into the rotary dumper, controlled by one system and one algorithm with the dumper.
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