Guide rail for moving load bearers

摘要

The aluminium alloy support (10 is in the form of an extruded hollow profiled. The hollow interior is divided by a transverse bridge piece (5) into a top (3) and bottom (4) compartment. An outer wall (6) of the bottom compartment, and an outer wall (7) of the top compartment, as well as the transverse bridge piece, have several groups of holes (10, 11) through for a fixture screw each. the transverse bridge piece has a flat support surface (12) for the screws' heads. The support surface defines the top compartment.