JPS5968615A - Mechanism for installing reference point in position tracking device for tunnel boring machine - Google Patents

Abstract

PURPOSE:To facilitate moving operation by installing a photodetection part in a boring machine and making a light emission part movable in a propulsion direction. CONSTITUTION:A truck 13 carrying a lifter 15 is made travelable on rails 12 laid in the propulsion direction in the bottom of a tunnel B, and a light emission part P is mounted on a gate-type frame 14 built on the bottom of the tunnel B across the truck 13. The truck 13 is drawn under the frame 14 and the part P is lifted together with the frame 14 by the lifter 15 and the truck is run to carry the light emission part to a fresh reference point in the stage to moving the light emission part P.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reference point setting mechanism in a position tracking device 1ζ for a tunnel boring machine.

As a position tracking device, there is a position tracking device for tunnel boring machines that was previously filed by the same applicant.This device uses a light emitting part installed at a reference point and a light receiving part mounted on the tunnel machine to determine the position of the tunnel tunnel machine. Distance measurement from the point, thruster position, l! : Measures the deviation from the excavation plan line. At this time, the arrangement of the light emitting parts at the reference points was carried out using the mechanism shown in FIG. A cage 1 is suspended from the tunnel ceiling A, and consists of an X table 2 that can move forward and backward in the direction of propulsion, a Y table 3 that can move left and right, and a Z table 4 that can move downward. A three-axis stage 5 is mounted, and a reference light beam emitter 6 is mounted on the three-axis stage 5. A rangefinder 7 and a communication device 8 are provided.

A control unit 9 for controlling the above-mentioned equipment is suspended from the bottom surface of the cage 1, and these units are placed at reference points within the tunnel. This relationship is shown in the longitudinal sectional view of FIG. In the figure, 10 is a vertical shaft dug from the ground, and a segment 11 is built in the tunnel H excavated by the IM propulsion engine entered from this shaft, and a light emitting part P is installed on the tunnel ceiling A at the reference point position. (The structure shown in Fig. 1) is installed. Light receiving part Q corresponding to this light emitting part P
is installed on excavator M. A rail 12 is laid on the first side of the tunnel 'B in the direction of the propulsion force, and a trolley 13 runs on it. As the excavation progresses, the light receiving part Q (excavation machine) cannot be irradiated with a light beam from the light emitting part P (reference point) due to the influence of the curved part inherent in tunnels, so the reference point must be moved. In other words, the light emitting part P must be moved from the current reference point to the new reference point.However, in the reference point installation mechanism shown in Figure 1, the cage 1 must be removed from the tunnel ceiling A and moved to the new reference point. The disadvantage was that it required a lot of manpower and work time to hang and attach it again to the tunnel ceiling.

The present invention eliminates the above-mentioned drawbacks and provides a reference point setting mechanism in which the light emitting section can be moved in the propulsion direction by a simple operation when moving to a new reference point C.

As an embodiment of the present invention, a portal frame shown in FIG. 3 will be explained. Figure 3 shows a cross section at a certain point in the excavated tunnel as shown in Figure 2.The same song in Tunnel B has segment 11 built-in, and the bottom of Tunnel B is Rails 12 are laid in the direction of propulsion, and a trolley 13 runs. The light emitting unit P (light beam emitter 6 for three-axis stage 5° reference, rangefinder 79, communication device 8, and control device 9) is mounted on a gate-shaped pedestal 14 built from the bottom of the tunnel B so as to straddle the trolley 13. This is what is mounted on the top of the machine. To move this light emitting part P (l!: use the trolley 13. As shown in FIG. 4, pull the trolley 13 inside the pedestal 14,
Mount the light emitting part P on the mount 14 or use the lid 15.
All you have to do is lift it up, run the trolley 13 in that state, transport it to a new reference point in the direction of propulsion, and lower the pedestal 14 to that location.

5 and 6 are a front view and a side view of a reference point setting mechanism which is another embodiment of the present invention, and the same parts as in FIGS. 1 to 4 are given the same symbol and explained. omitted. This reference point setting mechanism attaches a mounting plate 16 to a part of the trolley 13 running inside the excavated tunnel B, and a light emitting part P (triaxial stage 5, reference light beam emitter 6) is mounted on the mounting plate 16.
．． It is equipped with a range finder, a 7° communication device 8, and a control device 9).

Since the light emitting part P is mounted on the trolley 13, it can be easily moved to any position in the propulsion direction.

Figures 7 and 8 are front views*91' of a reference point setting mechanism according to still another embodiment of the present invention, and parts common to those in Figures 1 to 6 are designated by the same reference numerals. The explanation will be omitted. In this reference point setting mechanism, a rail 17 extending in the propulsion direction is provided on the ceiling A in an excavated tunnel B, and a cage 18 running on this rail 17 is suspended. A light emitting unit P (three-axis stage 5, reference light beam emitter 6, range finder 79, communication device 8, and control device 9) is mounted on this cage 18. Since the light emitting part P is mounted on a cage 18 that can run on the rails 17, it can be easily moved to any position in the propulsion direction.

The reference point setting mechanism according to the present invention described above is configured so that it can be moved by a simple operation in the propulsion direction, so it is easy to move the light emitting part to a new reference point, and the work time required for moving it is extremely shortened. effective.

[Brief explanation of drawings]

Fig. 1 is a front view of a conventional reference point setting mechanism, Fig. 2 is a side view of the above mechanism, Fig. 3 is a front view of a reference point setting mechanism which is an embodiment of the present invention, and Fig. 4 is the same as above. FIG. 5 is a front view of a reference point setting mechanism according to another embodiment of the present invention; FIG. 6 is a side view of the same mechanism; FIG. M7 is a front view of a reference point setting mechanism according to still another embodiment of the present invention. FIG. 8 is a side view of the same mechanism. 5: Three-axis stage, 6: Reference light beam emitter, 7:
1j (ll rangefinder, 8: communication device, 9: control unit, 1
1: Mounting plate, 13: Trolley, 14: Gate-shaped frame, 15
: lifter, 17: rail, 18: cage, A: tunnel ceiling, B: tunnel, M: propulsion device, P: light emitting section,
Q: Light receiving section. 71 Spear 2 Eye 83- T 3 Mouth T4- Mouth fang S Mouth f411 1θ t 7 Lower a Figure

Claims (1)

[Claims] l) A reference light beam emitter and a range finder which are integrally arranged so as to be movable forward and backward, left and right, up and down in the direction of propulsion. It consists of a communication device and a control unit for the device, and a light emitting unit installed at a reference point, a standard target, a ranging target, a communication device, and a light emitting unit installed at a reference point, and a reference target, a ranging target, a communication device, and a light emitting unit installed at a reference point. 1. A position tracking device comprising a control unit of equipment and a light receiving section mounted on a side advancing device, wherein the light emitting section is configured to be movable in a propulsion direction. 2. In the thing described in claim 1, the light emitting part is arranged to straddle a construction trolley passing through the tunnel.
The light emitting part is mounted on a gate-shaped pedestal, and when the light emitting part is moved, a trolley is pulled inside the gate-shaped pedestal, and the trolley is mounted on this trolley so that the trolley can move around. Reference point treatment mechanism. 3) The reference point setting mechanism according to claim 1, wherein the light emitting section is mounted on a part of the trolley. 4) In the device described in claim 1, a rail extending in the propulsion direction is installed on the ceiling of the tunnel, and the light emitting unit is mounted on a cage that is suspended from the rail and can move l in the propulsion direction. A reference point setting mechanism featuring: