Non-destructive positioning device for shield tunnel forced centering measurement equipment

Abstract

The utility model relates to the technical field of forced centering measuring equipment positioning, in particular to a non-destructive positioning device for shield tunnel forced centering measuring equipment. Comprising an inclined positioning plate fixed to the inner side wall of a tunnel, a horizontal positioning plate arranged on the inclined positioning plate and an inclined strut arranged between the horizontal positioning plate and the inclined positioning plate. The inclined positioning plate is fixedly connected with a duct piece pre-buried channel on the inner side wall of a tunnel through a positioning mechanism; the positioning mechanism comprises a T-shaped bolt penetrating through the inclined positioning plate, and the T-shaped bolt is fixed to the duct piece pre-buried channel through a nut. A connecting disc is arranged on the horizontal positioning plate, and a connecting bolt is arranged at the center of the connecting disc; the T-shaped bolt is further provided with an anti-rotation assembly. According to the utility model, the original destructive fixing mode is changed, the forced centering measuring equipment is fixed by using the original duct piece pre-buried channel on the inner wall of the tunnel, and the forced centering measuring equipment is convenient to assemble and disassemble and can be recycled.

Description

Technical Field

[0001] The utility model relates to the technical field of forced centering measurement equipment positioning, in particular to a non-destructive positioning device for forced centering measurement equipment of a shield tunnel. Background Art

[0002] In shield tunnel construction, forced centering measurement equipment is required to determine the position and direction of the shield machine relative to the reference point, to assist in determining the position and offset of the shield machine, to ensure alignment with the target trajectory, and to ensure the accuracy and quality of construction.

[0003] The forced centering measurement equipment needs to be fixed on the inner wall of the tunnel. The commonly used fixing method is to drill holes in the segments of the inner wall of the tunnel and use expansion bolts to fix the forced centering measurement equipment on the inner wall of the tunnel. This destructive fixing method requires manpower and financial resources, and the damage to the segments is irreversible, affecting the surface strength of the segments. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a non-destructive positioning device for forced centering measurement equipment of a shield tunnel, so as to solve the problems involved in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a non-destructive positioning device for forced centering measurement equipment of a shield tunnel, comprising an oblique positioning plate fixed to the inner wall of the tunnel, a horizontal positioning plate arranged on the oblique positioning plate, and an oblique support arranged between the horizontal positioning plate and the oblique positioning plate;

[0006] The oblique positioning plate is fixedly connected to the pre-buried groove of the pipe segment of the inner side wall of the tunnel through a positioning mechanism;

[0007] The positioning mechanism includes a T-bolt penetrating the oblique positioning plate, and the T-bolt is fixed to the pre-buried groove of the pipe segment by a nut;

[0008] The horizontal positioning plate is provided with a connecting disc, and a connecting bolt is provided at the center of the connecting disc;

[0009] The T-bolt is also provided with an anti-rotation component.

[0010] Furthermore, the oblique positioning plate is provided with a bolt hole, and the T-bolt passes through the bolt hole.

[0011] Furthermore, the T-bolt includes a screw rod and a strip block fixed to one end of the screw rod.

[0012] Furthermore, the anti-rotation assembly includes a groove arranged at the bottom of the strip block, and an anti-rotation plate arranged at the opening of the groove, and the anti-rotation plate is connected to the bottom of the groove through a spring.

[0013] Furthermore, the spring, in a naturally stretched state, causes the lower end surface of the anti-collision plate to be lower than the lower end surface of the strip block.

[0014] Furthermore, the upper end surfaces on both sides of the strip block in the length direction are provided with stepped grooves.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model changes the original destructive fixing method and utilizes the original pre-buried groove of the pipe segment on the inner wall of the tunnel to fix the forced centering measuring equipment. It is easy to install and disassemble and can be used cyclically. By arranging the anti-rotation component, it is ensured that the T-bolt is not easy to rotate during installation, thereby improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the positioning mechanism and the pre-buried groove of the pipe segment in Example 1 of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the positioning mechanism of Embodiment 2 of the present utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the positioning mechanism and the pre-buried groove of the pipe segment when using the second embodiment of the utility model;

[0021] In the figure:

[0022] Oblique positioning plate 1, horizontal positioning plate 2, oblique support 3, embedded channel 4 of pipe segment, connecting disc 5, connecting bolt 6, T-bolt 7, nut 8, screw rod 71, strip block 72, groove 73, anti-rotation plate 74, spring 75, stepped groove 76. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] Depend on Figure 1-2As shown, a non-destructive positioning device for forced centering measurement equipment of a shield tunnel comprises an oblique positioning plate 1 fixed to the inner side wall of the tunnel, a horizontal positioning plate 2 arranged on the oblique positioning plate 1, and an oblique support 3 arranged between the horizontal positioning plate 2 and the oblique positioning plate 1; the oblique positioning plate 1 is fixedly connected to a pre-buried channel 4 of a pipe segment of the inner side wall of the tunnel through a positioning mechanism;

[0026] The horizontal positioning plate 2 is provided with a connecting disc 5 , and a connecting bolt 6 is provided at the center of the connecting disc 5 ; a forced centering measuring device is provided on the connecting bolt 6 .

[0027] The positioning mechanism includes a T-bolt 7 penetrating the oblique positioning plate 1. The oblique positioning plate 1 is provided with a bolt hole, and the T-bolt 7 penetrates the bolt hole. The T-bolt 7 is fixed to the pre-buried channel 4 of the pipe segment by a nut 8; the T-bolt includes a screw rod 71 and a strip block 72 fixed to one end of the screw rod 71.

[0028] The oblique positioning plate 1 can be fixed to the pre-buried groove 4 of the pipe segment by the T-bolt 7 without destructive drilling, and the forced centering measuring equipment can be firmly fixed and easily installed and removed.

[0029] Embodiment 2:

[0030] The similarities between this embodiment and embodiment 1 are not repeated here, but the differences are as follows:

[0031] like Figure 3-4 As shown,

[0032] The T-bolt 7 is also provided with an anti-rotation assembly. The anti-rotation assembly includes a groove 73 provided at the bottom of the strip block 72, an anti-rotation plate 74 provided at the opening of the groove 73, and the anti-rotation plate 74 is connected to the bottom of the groove 73 via a spring 75. The spring 75 makes the lower end surface of the anti-rotation plate 74 lower than the lower end surface of the strip block 72 in a naturally stretched state. The upper end surfaces of both sides of the strip block 72 in the length direction are provided with stepped grooves 76.

[0033] When in use, after putting the T-bolt 7 into the pre-embedded groove of the pipe segment, press the T-bolt 7 downward to compress the spring 75 and retract the anti-rotation plate 74 into the groove 73. After rotating the T-bolt 7 90 degrees, release the pressure and the anti-rotation plate 74 pops out of the groove 73 under the elastic force of the spring, so that the upper end surface of the strip block 72 abuts against the top inner wall of the pre-embedded groove 4 of the pipe segment. In the subsequent process of rotating the nut 8, the strip block 72 will not rotate accidentally.

[0034] Figure 4 The middle left picture is a schematic diagram of the T-bolt 7 being placed into the pre-buried groove of the pipe segment, and the right picture is a schematic diagram of the T-bolt after being rotated 90 degrees.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-destructive positioning device for forced centering measurement equipment of a shield tunnel, characterized in that: It includes an oblique positioning plate fixed to the inner side wall of the tunnel, a horizontal positioning plate arranged on the oblique positioning plate, and an oblique support arranged between the horizontal positioning plate and the oblique positioning plate; The oblique positioning plate is fixedly connected to the pre-buried groove of the pipe segment of the inner side wall of the tunnel through a positioning mechanism; The positioning mechanism includes a T-bolt penetrating the oblique positioning plate, and the T-bolt is fixed to the pre-buried groove of the pipe segment by a nut; The horizontal positioning plate is provided with a connecting disc, and a connecting bolt is provided at the center of the connecting disc; The T-bolt is also provided with an anti-rotation component.

2. The non-destructive positioning device for forced centering measurement equipment of a shield tunnel according to claim 1 is characterized in that: The oblique positioning plate is provided with a bolt hole, and the T-bolt passes through the bolt hole.

3. The non-destructive positioning device for forced centering measurement equipment of a shield tunnel according to claim 1, characterized in that: The T-bolt comprises a screw rod and a strip block fixed at one end of the screw rod.

4. The non-destructive positioning device for forced centering measurement equipment of a shield tunnel according to claim 3 is characterized in that: The anti-rotation assembly comprises a groove arranged at the bottom of the strip block, and an anti-rotation plate arranged at the opening of the groove. The anti-rotation plate is connected to the bottom of the groove through a spring.

5. The non-destructive positioning device for forced centering measurement equipment of shield tunnel according to claim 4 is characterized in that: The spring makes the lower end surface of the anti-rotation plate lower than the lower end surface of the strip block in a naturally stretched state.

6. The non-destructive positioning device for forced centering measurement equipment of a shield tunnel according to claim 3 is characterized in that: The upper end surfaces of both sides of the strip block in the length direction are provided with stepped grooves.

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