In one aspect the invention provides a conveyor module (2) including a support structure (4) having means (52) for supporting opposed elongate sidewalls (10) lying on opposite sides of a conveyor belt loop (22), the sidewalls (10) being connected in spaced a part relationship by a plurality of transverse connecting rods (14) which have a convex profile at least on their upper surface and each end (40, 42) of the sidewalls (10) is profiled to provide a support surface (43) adapted to engage a complementary support surface (43) of a like module joined in end to end relationship whereby part of the weight of one of the modules is transferred to the other module through the engaging support surfaces (43).
