Method for using airport trolleys
Supermarket trolleys no brakes, but in an automatic sidewalk on the elevator downstairs supermarket trolley is special, each wheel is concave on both sides of the outer edge, designed into a concave convex groove, and groove bottom and a tooth slot, and concave wheel from. The trolley wheels can be clamped on the sidewalk elevator transmission with concave and convex grooves, positioning and prevent accidental slip.
The airport trolley is a brake device, in the parallel push lever, need to press this taping the implementation, has been pressing, the vehicle will walk, let go the taping the main brake, the car could not walk.
