FIELD: transportation.
SUBSTANCE: corridor for transporting abrasive in an impact chamber is laterally limited by longitudinal sections resting on a foundation slab, and has a traction system for moving an axle set along a transport track. Traction system being provided with a substantially horizontal loop including loop return wheels and a loop connector having two bands moving in opposite directions. Each band of the loop connector (3) is placed in an individually assigned guiding slot (5), arranged on top of longitudinal section (2). Top of longitudinal section (2) is equipped with through voids (6) for withdrawing abrasive, at least in an area of guiding slot (5).
EFFECT: decrease in the corridor height is ensured.
16 cl, 7 dwg
