| 摘要 |
<p>A front underframe 2a and a rear underframe 3a are each equipped with at least one wheel 6a, 7a. A pushing arm 8a has a gripping zone 9a at its upper end. An X-shaped articulated rear chassis connects the two rear underframes 3a, 3b together. Each pushing arm 8a can slide parallel to the corresponding front underframe 2a between a deployed position and a folded position. Each rear underframe 3a is articulated to the corresponding front underframe 2a. A connecting rod 21a connects the lower end of each pushing arm 8a to the corresponding rear underframe. A control rod 27a is articulated on the connecting rod 21a and connected to a slide 17a mounted slidingly on each rear underframe 3a, 3b and to which the upper end of the rear X-shaped chassis is also articulated so as, upon folding, to bring about the folding of the X-shaped chassis and to bring the two lateral chassis assemblies closer to one another. <IMAGE></p> |
