FIELD: devices for tightening band-and-shoe brakes; braking units; mechanical engineering. SUBSTANCE: proposed tensioner is provided with upper and lower brackets mounted on plate in adjustable forks. Upper brackets are provided with movable rollers. Tensioner is also provided with rope whose ends are secured on lower brackets and escaping runs of ropes are thrown over movable rollers fitted in adjustable forks and on upper brackets. Mounted in rollers fitted in upper brackets is rope tensioner made in form of eccentric connected with double- arm lever. EFFECT: possibility of control of tension of brake band and braking torque; enhanced efficiency. 4 dwg
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