Longwall shearer haulage systems – a historical review. Part 3 – Chainless haulage systems with drive wheel and rack bar

Chainless shearer haulage systems with rack bar are currently the most popular group of this kind of solution. The first type of rack bar was captivated chain. In 70-ties great number of different solution of chainless haulage systems with drive wheel (sprocket or pin) and different rack bars were implemented. Afterwords some of them were abandoned for different reasons, but some are still in duty and under improvement. This article is the third and the last part of shearer haulage systems technical review, concentrated on chainless haulage system. Beginning from the british Rollrack with pin drive wheel and toothed rack bar through similar solutions with sprocket drive wheel in Europe and China and solutions with vertical or horizontal ladder type of rack bar is reflect technical development of shearer haulage system till contemporary solutions and trials of improvement.

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Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).