APPARATUS FOR COUPLING A BEAM TO A RAIL

The present invention relates to an apparatus (100) for coupling a beam to a rail along which the apparatus can move. The apparatus (100) comprises an arm assembly (102) having a first end arranged to interface with a said beam and a second end opposite the first end. A head assembly (104) is rotatably coupled to the second end of the arm assembly (102), and arranged to engage said rail to inhibit movement of the head portion (104) along the rail. The arm assembly (102) comprises a first part (202a) and a second part (202b), the first part (202a) and the second part (202b) being coupled together to form a box section.