| 摘要 |
machines for producing road-building materials. SUBSTANCE: heating system for hose 22 and distributing pipe 24 incorporated in device has three-phase heating element 30 supplied with power from generator. The latter is essentially ac generator 194 for vehicles driven by internal-combustion engine 52 and used for heating hose 22, distributing pipe 24, and hot mix material inside them. Regulator 46 is connected to temperature-sensor 122 placed on hose 22 for selective current supply to generator 166 for feeding heating element 30 so as to maintain desired temperature of hot mix material. Heating element incorporates conductors 98, 100, 102 of three-phase heating element wound on hose 22 and distributing pipe 24. EFFECT: improved service life and simplified design of device. 22 cl, 18 dwg
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