Tensioning apparatus
AssigneeTenscon Limited
InventorStan Ceney
Life of this patent
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Abstract
The present invention provides an apparatus and kit for tensioning a stud in a bolted joint to a desired preload, the apparatus comprising a locking means adapted for engagement with the stud, a removable bridge member arranged to at least partially enclose the locking means and to receive the stud therethrough, a removable actuator operable to actuate the locking means through the bridge member and removable tensioning means configured to apply tension to a load bearing surface of the bridge member so as to transfer tension to the stud, such that the actuator is operable to lock the locking means when the desired preload in the stud is achieved. The invention has application in many industries, including hydropower, wind, gas and steam turbines, nuclear, metal manufacturing, mining, shipbuilding and oil & petrochemical.
Claims11
An apparatus for tensioning a stud in a bolted joint to a desired preload, the apparatus comprising:
- a locking means adapted for engagement with the stud;
- a removable bridge member arranged to at least partially enclose the locking means and to receive the stud therethrough;
- a removable actuator operable to actuate the locking means through the bridge member;
- and
- removable tensioning means configured to apply tension to a load bearing surface of the bridge member so as to transfer tension to the stud;
- wherein the actuator is operable to lock the locking means when the desired preload in the stud is achieved.
A tensioning kit for use with a tensioner of a type such as a multi-jackbolt tensioner, the kit comprising:
- a locking means for engaging a stud in a bolted joint;
- a bridge member arranged to at least partially enclose the locking means and to receive the stud therethrough, the bridge member being operable to transfer tension to the stud under the action of the tensioner;
- and
- an actuator operable to actuate the locking means through the bridge member and to lock the locking means when a desired preload in the stud is achieved.
Dependencies are inferred from the claim text.