FIELD: process engineering.
SUBSTANCE: welding head can be used for making butt welding of two extreme ends of track two sections. Two welding head halves 10 are opposed to slide relative to each other in lengthwise direction. Every said half has rail grippers 12, 13. At least two electrodes 16 are connected in electric welding circuit to ensure contact with appropriate rail section. Drives 20 extend in lengthwise direction and are connected with said two welding head halves 10 to displace them toward each other. Said drives 20 feature working stroke and force that allow in welding of two rail sections a simultaneous adjustment of track tension depending upon ambient temperature and rail length.
EFFECT: closure of welded sections and stabilised tension.
16 cl, 15 dwg
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