FIELD: railway transport. SUBSTANCE: machine 1 for checking height of contact wire of overhead contact system 19 has running mechanism 3 with traction drive moving along rail track 4 and measuring hoop 28 movable in height. Measurement frame 5 is installed on machine for movement in height. Lower end part 8 of frame 5 rests on axle box 11 of rail running mechanism 3. Upper end part 13 of measurement frame 5 is connected with checking and measuring unit 17 which provides measurement of height of contact wire 18. Changes in distance between body and upper edges of rails owing to depreciation produce no effect on results of measurement of height. EFFECT: enlarged operating capabilities. 18 cl, 10 dwg
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