| 摘要 |
FIELD: construction engineering. SUBSTANCE: device for pretension of reinforcing wire bundles is provided with hydraulic power drive unit, front and rear collet-type clamps, anchor holder, stop holder, hydraulic power cylinder with case and pistons for tensioning of wire bundles and pressing-in of collet-type clamps, support located on hydraulic cylinder case with possibility for rotation, removable depressing stop interacting with rear end face of stop holder, support fixing unit, support, bundle tensioning piston with anchor holder and removable depression stop. Pressing-in piston is located inside bundle tensioning piston and is provided with guide passages for bundles. EFFECT: simple design and low operating cost. |
