| 摘要 |
PROBLEM TO BE SOLVED: To stably and precisely carry out travelling information detection of a movable body. SOLUTION: This device is constituted to equip revolving parts 55, 57 to revolve in accordance with travelling of a movable body in a state of making contact with rails 17, 32 and a revolution detection means to detect revolution of these revolving parts 55, 57 on the movable body to travel by being guided by the rails 17, 32. In this case, these revolving parts 55, 57 are constituted to make contact with the rails 17, 32 on a plural number of points in the rail longitudinal direction and so that these contact parts 55 work to revolve in an interlocked state. Additionally, favourably, a plural number of the ring bodies 55 rolling in accordance with travelling of the movable body in a state of making contact with the rails 17, 32 are provided by arranging them in the rail longitudinal direction as constitution of the revolving parts, and an interlocking mechanism 57 to rotate these ring bodies 55 interlocked is provided. |
