Wheel-crawler-variable chassis

The invention provides a wheel-crawler-variable chassis which comprises a crawler belt module, a wheel type module and a support leg module, wherein the crawler belt module comprises a crawler belt walking bracket, a crawler belt walking mechanism and a rotary neck, the support leg module comprises a support leg bracket and four support legs; the wheel type module comprises a front wheel module and a back wheel module; and a front hanger bracket comprises a hanger bracket upper support, a hanger bracket lower support, a furcated ring, a leveling oil cylinder and a leveling oil cylinder installing block. According to the wheel crawler-variable chassis, the novel wheel crawler-variable chassis structure aiming at emergency rescue can be realized, so that the heavy rescue engineering machinery can realize the flexible switching between the tire type walking and the crawler belt walking according to different road conditions. According to the novel wheel crawler-variable chassis, the rescue engineering machinery can quickly hurry to the disaster field due to the quick motion capability of the tire type walking mode when disaster strikes, and can be conveniently switched into the crawler belt type walking type to carry out the rescue according to the condition of road surface in the process of rescuing, and the rescue can be carried out by unfolding the support legs when necessary.