CONCRETE REINFORCEMENT CABLE TENSIONER

摘要

A concrete reinforcement cable tensioner (10) has a cable gripper (60) with its base end (87) mounted to a flange (18) which is secured to the tensioning cylinders (12, 14) by abutting a shoulder on the outside of the cylinders (12, 14). An auxiliary retraction spring (94) is contained in a tubular handle (86) which is fixed to the flange (18) and the spring (94) acts on a rod (92) which extends beyond the handle (86) and has its distal end fixed to a yoke (104) which connects the piston rods (30) of the cylinders (12, 14) and on which a seat (108) for bearing against the concrete slab is mounted. The base ends (24) of the tensioning cylinders (12, 14) are hydraulically connected by a manifold (16) which is common to the cylinders (12, 14) and binds the base ends (24) of the cylinders (12, 14) together.