| 摘要 |
A device for the quick coupling of a pipe fitting ( 50 ) to a flanged pipe is described. The device comprises a coupling plate ( 13 ) that is rigidly fastened to one end of the fitting so as to be axially approachable to the front of a terminal flange ( 12 ) of the flanged pipe, at least three locking wheels ( 15 ) rotatable around their own axes and projecting frontally from the plate ( 13 ) in circumferentially spaced positions and remotely controllable member ( 19 ) for controlling the rotation of the rollers ( 15 ) around their own axes. Each locking wheel ( 15 ) has round shape with a cut ( 24 ) along a circle chord in order to allow in one angular position with the chord facing the axis, and to prevent in all the other angular positions, the passage of the flange ( 12 ) of the flanged pipe among the wheels ( 15 ) for the reciprocal approach and the movement away of the plate ( 13 ) and the flange ( 12 ). Each locking wheel ( 15 ) has in addition, toward the plate ( 13 ) a helical neck ( 25 ) that is capable to cause, as a result of the rotation of the wheel ( 15 ) from the one angular position to the other angular positions, the front abutment engagement and the locking of the flange ( 12 ) against the plate ( 13 ).
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