FIELD: bridge engineering. SUBSTANCE: device has hydraulic-cylinder thrust actuator and gripping tool hinged to hydraulic cylinders. Novelty is that gripping tool incorporates a number of hydraulic cylinders whose plungers are arranged perpendicular to bottom ledge of steel span, top jaws, and stops corrugated at point of contact with bottom ledge; jaws are coaxially arranged in pairs within gripping tool casing; the latter encloses bottom ledge of steel span at its ends; top jaws and stops are spaced apart in gripping tool casing along bottom ledge through distance exceeding their diameter. EFFECT: improved reliability and capacity of device. 2 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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SU1101496A1 |
