Wheel-tracked variable chassis

The utility model provides a wheel-tracked variable chassis. The wheel-tracked variable chassis comprises a crawler module, a wheel-type module, and a landing leg module. The crawler module comprises a crawler walking frame, a crawler walking mechanism, and a rotary neck. The landing leg module comprises a landing leg frame and four pairs of landing legs. The wheel-type module comprises a front wheel module and a back wheel module. A front suspension comprises a suspension upper support, a suspension lower support, a forked ring, a leveling oil cylinder, and a leveling oil cylinder installing block. Due to the fact that the novel wheel-tracked variable chassis structure which aims at emergency rescue is achieved, a heavy-type rescue engineering machine is enabled to achieve the flexible switchover of a tire-type walking mode and a crawler-type walking mode according to different road conditions. The novel wheel-tracked variable chassis can enable the rescue engineering machine to use quick moving capacity of the tire-type walking mode to quickly rush to disaster sites when a disaster happens. Furthermore, in the disaster relief process, the novel wheel-tracked variable chassis also can be conveniently changed into the crawler-type walking mode to conduct rescue according to road surface conditions. As occasion requires, the landing leg module can be opened to conduct rescue work.