FIELD: mechanical engineering; lifting, road building and construction machines and vehicles; heavily loaded drum-and-shoe brakes. SUBSTANCE: brake has drum, brake shoes with ribs and friction linings. Cooling system arranged between brake shoe ribs has heat tubes and semiconductor rods with p- and n- type junctions some ends of which are fitted in friction linings of brake shoes flush with linings to form hot junction with brake drum surface and other ends of semiconductor rods are in contact with heat tubes. EFFECT: improved operation of brakes. 4 dwg
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