Method for coupling and a coupling device

A method for coupling a first shaft provided with a flange having a through bore and a second shaft provided with a flange having a blind bore aligned with the through bore in the flange of the first shaft, said method comprising:

• (a) providing a coupling device including an adapting bolt having an external tapered surface and an axial hole which is internally threaded and is open at the narrower end of the adapting bolt, the coupling device also including a cylindrical sleeve element having an internal tapered surface corresponding to the external tapered surface of the adapting bolt, the adapting bolt being within the sleeve element,
• (b) fitting the coupling device in the aligned bores so that the narrower end of the adapting bolt is toward the flange of the first shaft and an end surface of the sleeve element is exposed,
• (c) fitting a tool in the axial hole in the adapting bolt, the tool being a hydraulic tool which comprises a cylindrical supporting sleeve engaging the sleeve element, a piston member hydraulically moveable with respect to the supporting sleeve, and an externally threaded piston rod coupled to the piston member and in threaded engagement with the adapting bolt, and
• (d) applying a force to the tool tending to displace the adapting bolt relative to the sleeve element in the direction from the wider end of the adapting bolt toward the narrower end thereof.

A method for coupling a first shaft provided with a flange having a through bore and a second shaft provided with a flange having a blind bore aligned with the through bore in the flange of the first shaft employing a coupling device including an adapting bolt having an external tapered surface and an axial hole open at the narrower end of the adapting bolt and a cylindrical sleeve element having an internal tapered surface corresponding to the external tapered surface of the adapting bolt, the adapting bolt being within the sleeve element, and the method comprising:

• (a) installing an end piece in the aligned bores,
• (b) fitting the coupling device in the aligned bores behind the end piece so that the narrower end of the adapting bolt is toward the flange of the first shaft and an end surface of the sleeve element is exposed,
• (c) fitting a tool in the axial hole in the adapting bolt, and
• (d) applying a force to the tool tending to displace the adapting bolt relative to the sleeve element in the direction from the wider end of the adapting bolt toward the narrower end thereof,
• and wherein the end piece can be used in applying a force tending to displace the adapting bolt relative to the sleeve element in the direction from the narrower end of the adapting bolt toward the wider end thereof.