JPH02116600U

JPH02116600U -

Info

Publication number: JPH02116600U
Application number: JP2250889U
Authority: JP
Priority date: 1989-02-28
Filing date: 1989-02-28
Publication date: 1990-09-18
Anticipated expiration: 2004-02-28
Also published as: JPH0626626Y2

Description

[Brief explanation of the drawing]

第１図イ，ロは本考案の一実施例の側断面図、
第２図は第１図イの−矢視図、第３図は第１
図イの−矢視図、第４図は第１図イの−
断面図、第５図は第１図ロの−断面図、第６
図は従来例の側断面図である。２，２′はセグメント、３はテールフレーム、
１３はシールドフレーム、１６はトンネル、２３
は本体フレーム、２５はセグメント前端面当接部
、３６は押付け板、３７は計測センサ、５４は演
算装置、ｃはテールクリアランス、αは相対距離
、ｔはセグメント厚さを示す。 Figures 1A and 1B are side sectional views of an embodiment of the present invention;
Figure 2 is a -arrow view of Figure 1 A, and Figure 3 is a view of Figure 1.
Fig. 4 is a -arrow view of Fig. 1A.
A cross-sectional view, Figure 5 is a - cross-sectional view of Figure 1 B,
The figure is a side sectional view of a conventional example. 2, 2' are segments, 3 is a tail frame,
13 is the shield frame, 16 is the tunnel, 23
25 is a main body frame, 25 is a segment front end surface contact portion, 36 is a pressing plate, 37 is a measurement sensor, 54 is an arithmetic unit, c is a tail clearance, α is a relative distance, and t is a segment thickness.

Claims

[Scope of utility model registration request]

In a tail clearance measuring device for measuring tail clearance between the inner surface of a tail frame of a shield frame and the outer surface of a segment assembled on the inner surface of the tail frame, the device is provided on the inner surface of the tail frame so as to be movable in the tunnel axis direction. a main body frame having a segment front end surface abutting portion capable of abutting against the segment front end surface;
a pressing plate that is attached to the main body frame so as to be movable in the tunnel radial direction and can come into contact with the inner surface of the front end of the segment; and the tail that is fixed to the pressing plate and when the pressing plate is pressed against the inner surface of the front end of the segment. A tail clearance measurement device comprising: a measurement sensor that detects a relative distance to an inner surface of a frame; and a calculation device that calculates and outputs a tail clearance based on the relative distance detected by the measurement sensor.