DEVICE FOR STRESSING OF STRAND REINFORCEMENT BUNDLES IN PRESTRESSED REINFORCED CONCRETE STRUCTURES Russian patent published in 2010 - IPC E04G21/12 

FIELD: construction.

SUBSTANCE: device for stressing strand reinforcement bundles in prestressed reinforced concrete structures includes a hydraulic drive, front and back collet fixtures, anchor and stop fixtures, a tension device arranged in the form of tension hydraulic cylinders that are displaced along the longitudinal axis of the device for stressing the bundles, a device for assembly of collet fixtures, assembly board with a tubular guide for strand reinforcements, and an alignment jacket of the anchor fixture. Bodies of the tension hydraulic cylinders are joined to the alignment jacket of the anchor fixture, and their stems - to the stop fixture. The stems of the tension hydraulic cylinders may be joined to the stop fixture by means of hinged joints. The device for assembly of the collet fixtures may be arranged in the form of assembly hydraulic cylinders arranged as displaced relative to the longitudinal axis of the device for stressing the bundles, and their bodies are rigidly connected to bodies of the assembly hydraulic cylinders, and their stems - to the assembly plate. The stems of the assembly hydraulic cylinders may be joined to the assembly board by means of hinged joints.

EFFECT: reduction of the device cost with simultaneous increase in its repairability and durability of its structure.

3 cl, 4 dwg