1) Crate-moving equipment 2) Lifting equipment 3) Self-propelled vehicle 4) Two-pronged vehicle 5) Warehouse vehicle 6) Warehouse workhorse 
A vehicle with projecting prongs that slide under a pallet to move merchandise in a warehouse or store. 
noun a small industrial vehicle with a power operated forked platform in front that can be inserted under loads to lift and move them
Also calleda small vehicle with two power-operated prongs at the front that can be slid under heavy loads and then raised for moving and stacking materials in warehouses, shipping depots, etc.