PURPOSE: To improve the working properties for measurements and so on in making it free of traveling on a wall surface safely by means of remote control by attaching a wheel to a wheel support leg being rotatable in the longitudinal direction of traveling in time of getting over an obstacle, and making this rotated wheel support leg free of restoration by dint of spring force, while having the wheel built-in with a magnet.
CONSTITUTION: A friction winch 51, rotating a drum wheel wrapped with a net or the like spread over a wall surface and making a car body travel along the wall surface, is mounted on a car body 10 mounted with a working apparatus 60. Each four-set of wheels 21 and wheel support legs 24 are installed in both front and rear bodies 12 and 11 of the car body 10, and each magnet 70 is built in each wheel 21. Each wheel support leg 24 is made free of rotation in the longitudinal direction around a turning shaft 27, and when the wheel 21 hit on an obstacle 92 or the like, the wheel support leg 24 turns rearward in the traveling direction, whereby it gets over this obstacle 92, namely, it becomes shiftable freely. After clearing this obstacle 92, the wheel support legs 24 are restored in the original state by action of a return spring 35.
YAMAZAKI AKITOMO
KONDO HIROSHI
DAIMARU JOJI
