Propozycja. Maszyna wydaje się być po prostu pompą.

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beam - A bar or straight girder used to support a span of roof between two support props or walls.
Drainage - The process of removing surplus ground or surface water either by artificial means or by gravity flow.
http://www.coaleducation.org/glossary.htm

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dźwigar
1. «poziomy element konstrukcyjny podtrzymujący stropy, mosty itp.»
https://sjp.pwn.pl/sjp/dzwigar;2456047.html

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Mine Drainage Pumps

Used in mines for maintenance of a normal water level and (as a part of dewatering plants) for pumping accumulated water above ground.

http://www.pumpsland.com/en/coal-mine-e.htm