| 摘要 |
PURPOSE:To prevent the generation of errors in an area near an inflection point to a slope section by measuring an azimuth angle of a contact point between rails and wheels, a pitching angle and transfer distance at a specified time interval and computing accumulated arithmetic operations based on the measured values and computing coordinates of the contact points. CONSTITUTION:The position of a subsequent truck under excavation during shielding work at one arbitrary point is measured automatically and continuously. In this case, the coordinates of a contact point between wheels 5 of the subsequent truck and a rail 1 is determined one by one and computed accumulatively, thereby determing the coordinates at the contact point 3 at a specified time. It is, therefore, possible to prevent the generation of errors even in an area near an inflection point to a slope section from a curved area or a horizontal section. The coordinates at an arbitrary single point of the subsequent truck is determined while posture data of the subsequent truck is being considered. At the same time, this measuring method is used with a device which automatically measures an arbitrary one point of a shield machine from an arbitrary one point of the subsequent truck and automatic and continuous measurement must be made even under excavation. |
