JPH01138990U - - Google Patents

Description

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, in which Fig. 1 is a plan view showing the automatic tail clearance measuring device when the segment front inner corner engaging member is retracted, and Fig. 2 is a plan view showing the tail clearance automatic measuring device when the segment front inner corner engaging member is retracted. A plan view showing the automatic tail clearance measuring device when the corner engaging member is made to protrude rearward beyond the spreader;
Figure 3 is a longitudinal front view showing the arrangement of the shield jack, spreader, and automatic tail clearance measuring device in the main body of the shield tunneling machine, Figure 4 is a front view of the automatic tail clearance measuring device, and Figure 5 is the automatic tail clearance measuring device. A vertical side view showing the relationship between a part of the measuring device, the main body of the shield tunneling machine, and the segments, Figure 6 is a vertical side view showing an enlarged part of Figure 5, and Figure 7 is B- in Figure 6. B sectional view, FIG. 8 is a vertical sectional side view showing the installation state of a cable deflection prevention winder for winding an electric cable, and FIG. 9 is a diagram showing an automatic tail clearance measurement and display circuit. In the figure, 1 is a shield jack, 2 is a spreader, 3 is a displacement meter support arm, 4 is a holding member,
5 is a shield tail skin plate, 6 is a movable member for measurement, 7 is a displacement meter, 8 is a displacement meter body, 9 is a segment, 10 is a rear side surface, 11 is a guiding slope, 1
2 is a segment front inner corner engaging member, 13 is a pressing spring, 14 is a skin plate detection member, 15 is a pressing spring, 16 is a rotating pressing member, 17 is a shield tunneling machine main body, 18 is an arm rotation operating member, 19 is a bracket, 20 is a support shaft, 21 is an end plate, 22 is a cylinder, 23 is an outward flange, 24 is a screw, 25 is an inner cylinder, 26 is an outer cylinder, 28 is a cylindrical body, 29 is an electric cable, 30 is a cable deflection prevention winder, 31 is an automatic measuring device, 32 is a signal converter, and 33 is a display panel.

Claims (1)

[Scope of utility model registration request] A middle part of a displacement meter support arm 3 is rotatably attached to a spreader 2 fixed to the rear end of a shield jack 1 in a shield excavator, and a holding member 4 is attached to the tip of the displacement meter support arm 3. is fitted to be movable in a direction perpendicular to the inner surface of the shield tail skin plate 5, and has a movable measurement member 6 that moves in the direction perpendicular to the inner surface of the shield tail skin plate 5. is fixed to the holding member 4, and the holding member 4 includes a rear side surface 10 that is engaged with the front surface of the segment 9, and a rear side surface 10 that is separated from the shield tail skin plate 5 toward the rear from the inner end of the rear side surface 10. A segment front inner corner engaging member 12 having a guiding slope 11 inclined as shown in FIG.
A pressing spring 13 that presses the holding member 4 toward the shield tail skin plate 5 is engaged with the holding member 4, and the skin plate detection member 14 fixed to the measurement movable member 6 is connected to the shield tail skin plate. 5 pressing spring 15
automatic tail clearance measurement of a shield excavator in which the displacement meter support arm 3 is engaged with a rotating pressing member 16 that rotates the distal end side of the displacement meter support arm 3 to move backward. Device.