PURPOSE: To improve the safety, durability, handleability and road surface protecting property of a rough road extrication device by clamping a seat bracket having at the center a bearing detachably provided with an arm-shaped antiskid bracket radially extending to the bolt or nut of an automotive body hub.

CONSTITUTION: A seat bracket 1 is secured to a bolt M2 projected outside the wheel T1 of an automotive body hub M1. Then, a protection cap (not shown) is covered and connected to a seat bracket bearing 13. Thus, the bearing 13 is protected. When it is used as an escaping device, the protection cap (not shown) is removed, and an antiskid bracked 2 is engaged fixedly to the bearing 13 via a removing bolt 26. In this case, since an antiskid unit 23 is independently provided at the prescribed interval on the outer periphery of a tire T, it is not necessary to alter the position of the tire and to perform a jacking-up. In this manner, the safety, durability, handleability and road surface protecting property can be improved.