Conveyor trough section construction

A trough section for a conveyor trough having a working side and a stowage side, comprising a mounting frame having a bottom wall, a first upright side wall at the working side and a second upright side wall at the stowage side, said bottom wall being connected to and between said side walls to form space for upper and lower trough section above said bottom wall, a wear tub at least in said upper section supported on said lower trough section between said first and second side walls, said tub forming a trough profile for said upper section, said side walls forming lateral flanges for said wear tub, said wear tub having at least on pocket on each side thereof, at least one fixing lug fixed to said first upright side wall and extending into said upper section and into engagement with said at least one pocket on one side of said wear tub adjacent said working side, said at least one pocket on said working side and said at least one fixed fixing lug being shaped for engagement of said fixing lug in said pocket while tilting said wear tub and rotating said wear tub about a horizontal axis near said working side to bring said wear tub into supporting engagement onto said bottom wall, at least one fixing shackle pivotally mounted about a vertical axis on said second upright side wall and extending through said second upright side wall for engaging said at least one pocket of said wear tub on a side of said wear tub adjacent said stowage side, and locking means for locking said pivotally mounted fixing shackle into said pocket adjacent said stowage side when said wear tub is supported on said lower trough section.