抄録
Large volcano observation robots are suitable for traversing rapidly vast range of land. Otherwise, small observation robots are not because of its slow speed, but suitable for climbing steep slope like around a Caldera and soft ground. Therefore, we propose the robot which is able to carry small observation robots to Caldera as soon as possible when a volcano erupts. Add to small observation robots, large volcanic observation equipment are also possible to be carried. Also, this robot has in-wheel-motor in each tire and made of commercially available frame. On the contrary its cheap constitution, this robot has high ability to go rough terrain by using off-road vehicle tires of a passenger car.
