| 摘要 |
FIELD: machinery building, particularly band-and-shoe draw-work brakes. ^ SUBSTANCE: cooling system has cooling units made as thermobatteries comprising electron- and hole-conduction thermal elements. The thermal elements are made as rings with side surfaces divided with heat insulation means. The rings are connected in pairs from above by metal plates, namely by partitions having different widths. The partitions are supported by metal discs. The rings extend over inner surface of pulley and ring ends are connected in pairs by heat-conductive plates having ribs, which are offset pitch half one from another counting from inner flange surfaces. Through orifices made in rings and metal discs are adapted to put the rings and the discs on cylindrical pins screwed in body of one flange. Another flange is connected to the cylindrical pins by nuts to bring the ring system together and to create pulley rim. The rings consist of two semi-rings divided with transversal insulation so that two independent thermobattery circuits are created. Band-and-shoe brake cooling method involves forming cooling units made as thermobatteries comprising electron- and hole-conduction thermal elements, wherein the thermobatteries included in the first semi-rim and connected one to another by wide bridge plates on working semi-rim surface operate in thermoelectric generator mode, thermobatteries of the second semi-rim and connected one to another by narrow bridge plates on working surface thereof operate in thermoelectric cooler mode. The last thermal elements of thermobatteries operating in thermoelectric generator mode are serially connected to ones of thermobatteries operating in thermoelectric cooler mode to increase current strength generated by thermoelectric generators to energize thermoelectric coolers. ^ EFFECT: increased service life of friction couplers due to increased cooling rate. ^ 3 cl, 6 dwg |
