Factories that deliver parts to production lines in regular rounds often use tugger carts coupled into a train and pulled by a tow tractor, cutting the number of trips and operators. But carts designed for hand pushing usually aren't suited to towing in a train.
How They Differ from Hand Trolleys
- They are towed at a steady speed for longer, so wheels and bearings work harder
- Each cart must track behind the one in front without swinging out on turns
- The hitch takes pulling and snatch loads every time the train starts and stops
Key Design Points
- Hitch: strong, easy to couple and uncouple, and welded directly to the main frame
- Caster layout: arranged so each cart tracks well behind the one in front — usually a combination of rigid and swivel casters in the right positions, depending on the train design
- Wheels built for continuous use: cast-iron-core PU wheels with quality bearings that carry the load and don't overheat and fail early
- Load retention: rails, lips or fixtures, because of the sideways forces on turns
Safety: set the towing speed and the number of carts per train to suit the route, and never exceed the design load. Towing too fast or too long a train makes it sway and risks hitting people or machines.
Information Needed for Design
- Part sizes and weight per cart
- Number of carts per train and the tow tractor model
- The route, turning radii and aisle widths
Summary
Tugger carts need strong hitches, caster layouts that track, wheels built for continuous use and safe towing speeds. Designing to your plant's actual route keeps the system running smoothly.