An elongated sweep apparatus for moving particulate matter in a bin may include a sweep assembly movable over the floor of the bin and a sweep drive assembly to move the sweep assembly. The sweep assembly may comprise a particulate sweep structure to move particulate matter toward one end of the elongated sweep apparatus. The sweep drive assembly may comprise at least one wheel to contact the floor and a slippage interface structure connected to the at least one wheel to transfer rotation to the at least one wheel and permit a degree of slippage of the rotational motion transferred to the at least one wheel when resistance to rotation of the at least one wheel exceeds a threshold resistance level.
