A ladder includes: a front connecting member and a rear connecting member at a top step, respective upper ends of which are connected to a lateral side of a vehicle body in a pivotally movable manner and are juxtaposed with a predetermined space therebetween in a vehicle front-back direction; a front connecting member and a rear connecting member which are provided at a step under the top step, and respective upper ends of which are connected in a pivotally movable manner to both ends in the vehicle front-back direction of a step board. The front connecting member and the rear connecting member at least at the top step among steps positioned above a lowest step are rigid members. The front connecting member and the rear connecting member at the lowest step among steps positioned under the top step are elastically deformable.
Vertically-movable steps for working vehicles
2020-04-07
Patent
Electronic Resource
English