| 摘要 |
PURPOSE:To allow running of a wall surface tractor even if there are protruded obstacles such as welding beads on a wall surface by supporting a magnet device for adsorption so as to be floated instead of being fixed to a frame. CONSTITUTION:Each of magnet devices 1 and 1a consists of a rectangular permanent magnet 8, a yoke 9, and a ball 10. These devices 1 and 1a are supported to be freely slided so that the vicinity of their front and rear ends can be placed between the two guide beams 11 and 11a provided on a frame 2 located at a position where the frame covers the magnet device 1. The magnet device is supported against the frame through a spring 14 and the absorption force of the magnet device is applied to the frame 2 through the spring 14. As a result, running wheels 3 and 3a are pressed on the wall surface. In addition, the driving forces coming from driving motors 4 and 4a are transmitted to the wheels 3 through deceleration gears 5 and 5a. |
