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

FIELD: construction engineering. SUBSTANCE: this is intended for producing prestressed reinforced concrete articles and structures. Device has main hydraulic cylinder with hollow rod with semiautomatic clamp located in it and connected with stop-guide members. Installed in stop-guide members is additional hydraulic cylinder with rod which at one side interacts with armature grip, and at other side interacts with semiautomatic clamp located in rod of main hydraulic cylinder. Armature grip is made in the form of bush and wedges. Semiautomatic clamp when moving with rod of main hydraulic cylinder away from supporting plate grips armature, draws it and tensions. For anchoring of armature in tensioned state, rod of additional hydraulic cylinder moves towards supporting plate and presses wedges in bush of armature grip. EFFECT: high efficiency. 1 dwg