Tunnel boring machine position and attitude measurement device

The position and attitude measuring device for tunnel boring machines addresses obstruction and relocation issues by integrating tunnel markers and imaging means, enabling continuous measurement and reducing repositioning efforts.

JP7875549B2Active Publication Date: 2026-06-18TODA CORP +1
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
TODA CORP
Filing Date
2022-10-13
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing surveying methods for tunnel boring machines, such as those described in Patent Documents 1 and 2, face difficulties in small-diameter and curved tunnels due to obstruction by equipment and require frequent relocation, which is time-consuming.

⚗Method used

A position and attitude measuring device for tunnel boring machines that includes a control unit, tunnel markers, and an imaging means attached to the machine, allowing for continuous measurement of position and attitude without obstructing tunnel operations and eliminating the need for equipment relocation.

🎯Benefits of technology

Enables continuous, unobstructed measurement of tunnel boring machine position and attitude in small-diameter and curved tunnels, reducing the time and effort required for repositioning surveying equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a position and orientation measuring device for a tunnel excavator that does not require replacing measurement equipment.SOLUTION: An excavation progress marker 21 is disposed at an excavation proceeding portion that progresses during excavation, and an excavation stop marker 22 is disposed at an excavation stop portion where the excavation stops during excavation. Imaging means 23 for capturing a marker image is arranged in a shield excavator 1. Relative positional relationship information acquisition means 201 acquires relative positional relationship information between the excavation progress marker 21 and the excavation stop marker 22 based on the marker image. Excavation stop marker absolute position information acquisition means 202 acquires excavation stop marker absolute position information. Excavation progress marker absolute position information acquisition means 203 acquires excavation progress marker absolute position information based on the excavation stop marker absolute position information and the relative position relationship information. Tunnel excavator position and orientation measuring means 205 determines at least one of the position and orientation of the shield excavator 1 based on the excavation progress marker absolute position information.SELECTED DRAWING: Figure 1
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