Headlock type barrier

Headlock-type barrier comprising:

• a. an upper pole and a lower pole each extending in a longitudinal direction;
• b. a pair of vertical uprights each connected to the lower pole and to the upper pole so as to define a frame,
• c. a swing arm mounted so as to pivot relative to the frame about a first transverse axis, the swing arm comprising an arm and a fork which is integral with an upper end of the arm, the fork comprising a pair of prongs arranged one on either side of the upper pole in the transverse direction, the swing arm further comprising a rod rigidly connected to each of the prongs of the fork, the rod being arranged above the upper pole in the vertical direction,
• d. a locking mechanism comprising a plate fixed to the upper pole and on which are hinged a first stop wedge and a second stop wedge between a deployed position in which the first stop wedge and the second stop wedge are adapted to cooperate with the rod of the swing arm in order to block the pivoting of the swing arm about the first transverse axis in a locking position relative to the frame, and a retracted position in which the swing arm can pivot freely about the first transverse axis relative to the frame,
• e. a control member adapted to move the first stop wedge and/or the second stop wedge from the deployed position to the retracted position.