Double-reflector-plate support for measurement

Abstract

The utility model relates to the technical field of tunnel construction measurement and monitoring measurement, in particular to a double-reflector-plate support for measurement, which comprises a base, a mounting hole is formed in the bottom surface of the base, a positioning screw hole communicated with the mounting hole is formed in the left side surface of the base, a positioning panel is arranged above the base, and a through hole is formed in the middle of the positioning panel. A positioning clamping groove is formed in the top of the positioning panel, a positioning insertion plate is inserted into the positioning clamping groove, reflection pieces are bonded to the front face and the back face of the positioning insertion plate, and the centers of the reflection pieces are concentric with the through hole; the device is installed on an embedded steel bar on the side wall of the tunnel through the installation holes, and can be fixed through the positioning screws after the orientation of the reflector plate is adjusted, so that quick disassembly and assembly can be realized; a double-sided reflector plate is adhered to the positioning insertion plate, so that bidirectional monitoring and measurement can be realized; the device is simple in structure, low in manufacturing cost and convenient to install, and the cost is greatly saved on the premise that the quality of tunnel monitoring and measuring work is guaranteed by putting the device into use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction measurement and monitoring measurement, in particular to a double-reflection-plate support for measurement. BACKGROUND

[0002] At present, during the excavation of an underground cavern, the staff needs to perform excavation contour lofting and section detection, and the cavern floor cannot be hardened in time during the construction process, which causes the measurement control point to fail to follow up the construction working face in time. In the past, the no-prism mode was generally used for measurement construction, and the conventional operation method was to drive a nail into the side wall, set up an instrument on the existing control point, and then perform point transfer in the no-prism mode, and then perform station setting by using the point transferred to the side wall during the lofting or section detection process. As the tunnel footage increases, the observation line and the side wall form a small angle, and it is necessary to continuously transfer points on the side wall to continue observation, which is low in efficiency. In addition, the use of the no-prism mode causes the observation error to be generally large. In order to ensure construction safety and engineering quality, the staff needs to perform deformation monitoring and real-time monitoring of the change of the tunnel structure. The existing monitoring measurement construction method is that the staff uses a reflection plate support to install a reflection plate or a double-sided right-angle small prism, so that a total station and other equipment can measure the monitoring position. However, the conventional reflection plate support has a problem that the reflection plate can only face a specific direction. As the tunnel footage increases, the monitoring sections gradually increase, which means that the staff needs to continuously move the measurement station to the front to continuously perform monitoring work, so that the collection efficiency of the monitoring data is not high. If the double-sided right-angle small prism is used, although observation can be performed from the front and back directions, the collection efficiency of the monitoring data can be improved, but the use amount is large in a long-distance tunnel engineering that needs intensive monitoring, which causes the cost to be too high. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a double-reflection-plate support for measurement, which comprises a base, the bottom surface of the base 1 is provided with a mounting hole, the left side surface is provided with a positioning wire hole communicating with the mounting hole, the upper portion of the base is provided with a positioning panel, the middle portion of the positioning panel is provided with a through hole, the top portion of the positioning panel is provided with a positioning clamping groove, a positioning insert plate is inserted into the positioning clamping groove, the front surface and the back surface of the positioning insert plate are bonded with reflection plates, and the centers of the reflection plates are concentric with the through hole.

[0004] Further, a positioning screw is screwed into the positioning wire hole.

[0005] Further, the clamping groove length and the clamping groove depth of the positioning clamping groove are equal, and the positioning clamping groove is rectangular and matched with the positioning insert plate which is also rectangular. At the same time, the clamping groove width of the positioning clamping groove is matched with the thickness of the positioning insert plate.

[0006] Further, the top portion of the positioning panel on both sides of the middle portion of the positioning clamping groove is provided with a semicircular notch.

[0007] Further, the front and back of the positioning plugboard is provided with a limiting frame, which is rectangular and matches the rectangular reflecting sheet, and the depth of the limiting frame is slightly greater than the thickness of the reflecting sheet.

[0008] Further, the center of the panel of the positioning plugboard (3) is provided with a circular adhesive hole (32).

[0009] Further, the base, the positioning panel and the positioning plugboard are integrally formed by 3D printing with high-strength nylon.

[0010] The beneficial effects of the present application are:

[0011] The device is installed on the pre-buried steel bars on the side wall of the tunnel through the mounting holes, and after adjusting the orientation of the reflecting sheet, it can be fixed through the positioning screw rod, and can be quickly disassembled and assembled. The double-sided reflecting sheet pasted on the positioning plugboard can realize bidirectional monitoring and measurement. The device has simple structure, low manufacturing cost and is easy to install. The use of the device ensures the quality of the tunnel monitoring and measurement work under the premise of saving cost. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a three-dimensional schematic view of the present application;

[0013] Figure 2 is an exploded view of the present application;

[0014] Figure 3 is a front view of the present application;

[0015] Figure 4 is a top view of the present application;

[0016] Figure 5 is a bottom view of the present application;

[0017] Figure 6 is a schematic view of the present application installed on the side wall of the tunnel;

[0018] In the figure: 1, base; 11, mounting hole, 12, positioning wire hole; 2, positioning panel, 21, through hole, 22, positioning clamping groove, 23, semicircular notch; 3, positioning plugboard, 31, limiting frame, 32, adhesive hole 32; 4, reflecting sheet; 5, positioning screw; 6, pre-buried steel bar. DETAILED DESCRIPTION

[0019] Example 1, as Figures 1-6As shown, a double-reflective sheet support for measurement comprises a base 1, the bottom surface of the base 1 is provided with a mounting hole 11, the left side surface is provided with a positioning wire hole 12 communicating with the mounting hole 11, the upper side of the base 1 is provided with a positioning panel 2, the middle part of the positioning panel 2 is provided with a through hole 21, the top of the positioning panel 2 is provided with a positioning clamping groove 22, a positioning plug-in plate 3 is inserted into the positioning clamping groove 21, the front surface and the back surface of the positioning plug-in plate 3 are bonded with reflective sheets 4, and the centers of the reflective sheets 4 are concentric with the through hole 21.

[0020] In the embodiment, the positioning wire hole 12 is screwed with a positioning screw 5, the steel bar head of a pre-embedded steel bar 6 pre-embedded in the side wall of the tunnel is mounted into the mounting hole 11, the end head of the positioning screw 5 is screwed to make the steel bar head of the pre-embedded steel bar 6 abut against the inner wall of the mounting hole 11, and the installation of the device is completed.

[0021] In the embodiment, the clamping groove length and the clamping groove depth of the positioning clamping groove 22 are equal, and the positioning clamping groove 22 is rectangular and matched with the positioning plug-in plate 3 which is also rectangular; meanwhile, the clamping groove width of the positioning clamping groove 22 is matched with the thickness of the positioning plug-in plate 3, so that the plug-in of the positioning plug-in plate 3 and the positioning clamping groove 22 is facilitated.

[0022] In the embodiment, the top of the positioning panel 2 on both sides of the middle part of the positioning clamping groove 22 is provided with a semicircular notch 23, and the semicircular notch 23 is designed to facilitate the removal of the positioning plug-in plate 3 in the positioning clamping groove 22.

[0023] In the embodiment, the front surface and the back surface of the positioning plug-in plate 3 are provided with limiting frames 31, the limiting frames 31 are rectangular and matched with the reflective sheets 4 which are also rectangular, and the depth of the limiting frame 31 is slightly greater than the thickness of the reflective sheet 4; the above design is that after the reflective sheet 4 is pasted in the limiting frame 31 on the front surface and the back surface of the positioning plug-in plate 3, the reflective sheet 4 will not be in contact with the inner wall of the positioning panel 2 to cause deformation and reduce the measurement accuracy when the positioning plug-in plate 3 is plugged into the positioning clamping groove 22.

[0024] In the embodiment, the panel center of the positioning plug-in plate 3 is provided with a circular bonding hole 32, the two reflective sheets 4 are bonded on the panels in the limiting frame 31 on the front surface and the back surface of the positioning plug-in plate 3, and the centers of the two reflective sheets 4 are tightly bonded through the reflective sheet back glue and the circular bonding hole 32, so that the measurement accuracy is not affected by the panel thickness in the limiting frame 31 of the positioning plug-in plate 3 when the two reflective sheets 4 are measured.

[0025] In the embodiment, the base 1, the positioning panel 2 and the positioning plug-in plate 3 are once formed by 3D printing of high-strength nylon material, and the 3D printing once forming technology reduces the processing cost.

[0026] The use method of the present application is as follows:

[0027] Firstly, the device is assembled by inserting the positioning plug plate 3 with the reflective sheet 4 pasted on both sides into the positioning slot 22. When monitoring is needed, first select a monitoring point in the tunnel, install the embedded steel bar 6 by punching at the point, then install the device through the mounting hole 11 on the steel bar head of the embedded steel bar 6, adjust the orientation of the reflective sheet 4, and then fix the device through the positioning screw 5, that is, the installation of the device is completed. When monitoring and measuring in the later period, the measuring instrument is aimed at the reflective sheet 4 to perform the measurement and monitoring work.

[0028] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the application. It should be understood that the above description is only a specific embodiment of the application and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application should be included in the protection scope of the application.

Claims

1. A double-reflector holder for measurement, characterized in that: The base (1) includes a base (1), the bottom surface of which is provided with a mounting hole (11), and the left side of which is provided with a positioning screw hole (12) communicating with the mounting hole (11). The base (1) is provided with a positioning panel (2) on the top. The positioning panel (2) has a through hole (21) in the middle. The positioning panel (2) has a positioning slot (22) on the top. A positioning insert (3) is inserted into the positioning slot (22). A reflective sheet (4) is glued to the front and back of the positioning insert (3). The center of the reflective sheet (4) is concentric with the through hole (21).

2. The double-reflector bracket for measurement according to claim 1, characterized in that: A positioning screw (5) is threaded into the positioning screw hole (12).

3. The double-reflector bracket for measurement according to claim 1, characterized in that: The length and depth of the positioning slot (22) are equal, and it is rectangular, matching the rectangular positioning plate (3); at the same time, the width of the positioning slot (22) matches the thickness of the positioning plate (3).

4. A double-reflector holder for measurement according to claim 3, characterized in that: The top of the two side positioning panels (2) in the middle of the positioning slot (22) is provided with a semi-circular notch (23).

5. A double-reflector holder for measurement according to claim 3, characterized in that: The positioning plate (3) has a limiting frame (31) on the front and back. The limiting frame (31) is rectangular and matches the reflective sheet (4), which is also rectangular. The depth of the limiting frame (31) is slightly greater than the thickness of the reflective sheet (4).

6. A double-reflector holder for measurement according to claim 5, characterized in that: The positioning insert (3) has a circular adhesive hole (32) at the center of its panel.

7. A double-reflector holder for measurement according to any one of claims 1-6, characterized in that: The base (1), positioning panel (2) and positioning insert (3) are made of high-strength nylon material and are formed in one step by 3D printing.

Images