DEVICE FOR TENSIONING OF REINFORCEMENT Russian patent published in 1998 - IPC

FIELD: construction engineering. SUBSTANCE: this is intended for producing prestressed reinforced concrete articles. Device has hydraulic cylinder with rod in which semiautomatic clamp is located. Hydraulic cylinder is connected with stop-guide members resting against armature grip. Located in stop-guide members is punch which through compression spring interacts with wedges of grip and with jaws of semiautomatic clamp. Semiautomatic clamp moving with rod from supporting plate catches reinforcement, draws it and tensions. For anchoring of reinforcement in tensioned state, punch under action of compression spring presses wedges in bush of grip. Hydraulic cylinder together with stop-guide members moves off supporting plate and by means of punch opens jaws of semiautomatic clamp. After that, device can be removed from reinforcement. EFFECT: high efficiency. 3 dwg