A surveying and mapping device for bridge construction

Abstract

The application discloses a surveying and mapping device for bridge construction and relates to the technical field of bridge pier laser surveying and mapping; the surveying and mapping device comprises a surveying and mapping mounting piece, a laser surveying and mapping device is arranged on the surveying and mapping mounting piece, the laser surveying and mapping device is used for measuring the precision of a row of bridge piers, a row of reference adjusting pieces are arranged on the front side of the laser surveying and mapping device, the reference adjusting pieces are used for reflecting laser emitted by the laser surveying and mapping device respectively, and fixing reflecting pieces are arranged below the laser surveying and mapping device; the surveying and mapping mounting piece can be used for controlling the displacement of the laser surveying and mapping device to adjust the measuring position; the reference sliding blocks on the reference mounting racks are arranged in a stepped and staggered mode respectively, so that workers can measure the rest of the row of bridge piers under the first bridge pier; and the problems that the current surveying and mapping device for bridge construction is inconvenient to quickly switch to measure multiple bridge piers and the measuring efficiency is low are solved.

Description

Technical Field

[0001] This invention relates to the field of laser mapping technology for bridge piers, specifically a mapping device for bridge construction. Background Technology

[0002] In actual bridge construction, the core task of construction surveying is to achieve precise positioning and attitude control of bridge piers through measurement. Bridge surveying work directly affects the construction quality. During the construction of bridge piers, it is necessary to survey the already cast piers to obtain information on their settlement and tilt, and make timely adjustments. For surveying rows of piers, a total station is usually used to perform laser measurements on each pier. Due to the flexibility and comprehensive functions of the total station, it is widely used. However, existing bridge construction surveying equipment requires measuring each pier individually to obtain surveying data, resulting in low measurement efficiency. Moreover, in special construction environments such as those spanning rivers, the measurement difficulty is further increased, making it inconvenient to quickly switch between measuring multiple piers, and the labor cost is also relatively high. At the same time, traditional laser measurement methods are easily interfered with by factors such as frost, rain, and fog, which cause high humidity and make it difficult to provide auxiliary warnings against interference.

[0003] Therefore, we propose a surveying device for bridge construction. Summary of the Invention

[0004] The purpose of this invention is to provide a surveying device for bridge construction, so as to solve the problem mentioned in the background art that the current bridge construction surveying devices are not convenient for quickly switching to measure multiple bridge piers and have low measurement efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a surveying device for bridge construction, comprising a measuring mounting component, on which a laser measuring device is mounted, the laser measuring device being used to measure the accuracy of a row of bridge piers; a row of reference adjustment components is provided on the front side of the laser measuring device; the row of reference adjustment components is respectively used to reflect the laser emitted by the laser measuring device; a fixed reflector is provided below the laser measuring device; humidity indicators are respectively provided on the laser measuring device and the row of reference adjustment components; the measuring mounting component includes: a measuring mounting frame and a drive screw, the drive screw being rotatably mounted on the measuring mounting frame; four through holes are provided on the side of the measuring mounting frame.

[0006] Preferably, the measuring mounting component further includes: a first servo motor, indicator lights, and measuring switches; the first servo motor is fixedly mounted inside the measuring mounting frame; the output shaft of the first servo motor is fixedly mounted at the end of the drive screw; a row of indicator lights is fixedly mounted at the bottom of the measuring mounting frame, and the indicator lights in the row have different colors; a row of measuring switches is fixedly mounted at the bottom of the measuring mounting frame, and each row of measuring switches is electrically connected to a row of indicator lights.

[0007] Preferably, the laser measuring device includes: a movable slider, a second servo motor, a rotary plate, and a laser measuring instrument. The movable slider is slidably mounted on a measuring mounting frame; the drive screw is threadedly connected to the movable slider; the second servo motor is fixedly mounted on the side of the movable slider, and the output shaft of the second servo motor passes through the movable slider; a rotary plate is fixedly mounted on the output shaft of the second servo motor; the rotary plate is rotatably mounted on the movable slider; the laser measuring instrument is fixedly mounted on the rotary plate; and the laser measuring instrument is used for laser ranging.

[0008] Preferably, the laser measuring device further includes: a compression control plate and a compression strip, wherein the compression control plate is fixedly installed on the bottom of the movable slider by bolts; the compression strip is fixedly installed on the compression control plate, and the two sides of the compression strip are inclined structures; the compression strip is used for compression measurement switch.

[0009] Preferably, the reference adjustment component includes: a reference mounting bracket, a reference slider, and positioning bolts. The reference mounting bracket is arranged in a row, and each row of reference mounting brackets has four through holes. Reference sliders are slidably mounted on each row of reference mounting brackets. The reference sliders on each row of reference mounting brackets are staggered in a stepped manner. Positioning bolts are threadedly connected to each row of reference sliders, and the ends of the positioning bolts are pressed against each row of reference mounting brackets.

[0010] Preferably, the reference adjustment component further includes: a reference frame and a reference plate, wherein a reference frame is fixedly installed on a row of reference sliders respectively; a reference plate is fixedly installed on a row of reference frames respectively; and a row of reference plates is used to reflect the laser emitted by the laser measuring instrument.

[0011] Preferably, the fixed reflector includes: a pre-embedded mounting shaft, the bottom of which has a tapered structure; the pre-embedded mounting shaft is used to seal onto the concrete foundation; the pre-embedded mounting shaft is located diagonally below the laser measuring instrument.

[0012] Preferably, the fixed reflector further includes: a reflective block, which is fixedly installed on the top of the pre-embedded mounting shaft; the top of the reflective block has a sloping structure; when the rotating plate is flipped, the laser measuring instrument aligns with the reflective block.

[0013] Preferably, the humidity indicator includes: a mounting shell and a sponge sheet, wherein the bottom of the mounting shell is provided with two grooves; the mounting shell is provided in a row, and the row of mounting shells is respectively fixedly installed on the top of the measuring mounting frame and the row of reference mounting frames; a sponge sheet is fixedly installed on the top of the mounting shell.

[0014] Preferably, the humidity indicator further includes: a humidity control switch and a warning light; a row of the mounting housings are respectively fixedly mounted with humidity control switches, and the detection end of the humidity control switch passes through the mounting housing; the detection end of the humidity control switch is attached to the bottom of the sponge sheet; a row of the mounting housings are respectively fixedly mounted with warning lights, and a row of humidity control switches are respectively electrically connected to a row of warning lights.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention employs a measuring mounting component to control the displacement and adjust the measurement position of the laser measuring device. Combined with a row of reference mounting frames featuring stepped, staggered reference sliders, this allows workers to measure the remaining piers from below the first pier, making the process more efficient and eliminating the need to measure each pier individually, especially in situations where there is a river beneath the piers, where manual measurement is difficult. The fixed reflector facilitates calibration of the first pier, ensuring the accuracy of the reference points for subsequent pier measurements. The laser measuring device, along with indicator lights and a measuring switch, further ensures the accuracy of the worker's control over the slider displacement, guaranteeing the precision of the laser measuring instrument during actual laser ranging and preventing data distortion caused by excessive or insufficient slider displacement.

[0017] Using a humidity indicator can reduce interference from environmental factors such as frost and fog on the laser measuring instrument, as well as the problem of water vapor affecting the reflection of the reference plate surface, thereby improving the detection accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a bridge construction surveying device of the present invention installed behind a row of bridge piers;

[0019] Figure 2 This is a schematic diagram of the structure of a surveying device for bridge construction according to the present invention;

[0020] Figure 3 This is a schematic diagram of the measuring and mounting component structure of the present invention;

[0021] Figure 4 This is a schematic diagram showing the installation position of the drive screw of the present invention;

[0022] Figure 5 for Figure 2Enlarged view of the structure in area E;

[0023] Figure 6 This is a schematic diagram showing the installation position of the extrusion strip of the present invention;

[0024] Figure 7 This is a schematic diagram of the reference adjustment component structure of the present invention;

[0025] Figure 8 For the present invention Figure 7 Enlarged view of the structure of the G region;

[0026] Figure 9 This is a schematic diagram of the fixed reflector structure of the present invention;

[0027] Figure 10 This is a schematic diagram of the humidity indicator of the present invention.

[0028] In the diagram: 1. Measuring mounting component; 101. Measuring mounting frame; 102. Drive screw; 103. First servo motor; 104. Indicator light; 105. Measuring switch; 2. Laser measuring device; 201. Moving slider; 202. Second servo motor; 203. Rotary plate; 204. Laser measuring instrument; 205. Extrusion control plate; 2051. Extrusion strip; 3. Reference adjustment component; 301. Reference mounting frame; 302. Reference slider; 303. Positioning bolt; 304. Reference frame; 305. Reference plate; 4. Fixed reflector; 401. Embedded mounting shaft; 402. Reflector block; 5. Humidity indicator; 501. Mounting shell; 5011. Sponge sheet; 502. Humidity control switch; 503. Warning light. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figures 1 to 10 As shown:

[0031] This invention provides a technical solution: a surveying device for bridge construction, comprising a measuring mounting component 1, on which a laser measuring device 2 is mounted, the laser measuring device 2 being used to measure the accuracy of a row of bridge piers; a row of reference adjustment components 3 is provided on the front side of the laser measuring device 2; the row of reference adjustment components 3 are respectively used to reflect the laser emitted by the laser measuring device 2; a fixed reflector 4 is provided below the laser measuring device 2; humidity indicator components 5 are respectively provided on the laser measuring device 2 and the row of reference adjustment components 3; the measuring mounting component 1 includes: a measuring mounting frame 101 and a drive screw 102, the drive screw 102 being rotatably mounted on the measuring mounting frame 101; four through holes are provided on the side of the measuring mounting frame 101.

[0032] The measuring mounting component 1 further includes: a first servo motor 103, indicator lights 104, and measuring switches 105. The first servo motor 103 is fixedly installed inside the measuring mounting frame 101; the output shaft of the first servo motor 103 is fixedly installed at the end of the drive screw 102; a row of indicator lights 104 are fixedly installed at the bottom of the measuring mounting frame 101, with each row of indicator lights 104 having a different color; a row of measuring switches 105 are fixedly installed at the bottom of the measuring mounting frame 101, and each row of measuring switches 105 is electrically connected to a row of indicator lights 104; the laser measuring device 2 includes: a movable... The slider 201, the second servo motor 202, the rotary plate 203, and the laser measuring instrument 204 can be a Dimetix-DPE-10-500 laser measuring instrument 204. The movable slider 201 is slidably mounted on the measuring mounting frame 101; the drive screw 102 is threadedly connected to the movable slider 201; the second servo motor 202 is fixedly mounted on the side of the movable slider 201, and the output shaft of the second servo motor 202 passes through the movable slider 201; the rotary plate 203 is fixedly mounted on the output shaft of the second servo motor 202; the rotary plate 203 is rotatably mounted on the movable slider 201. The moving slider 201 is mounted on the rotating plate 203; the laser measuring instrument 204 is fixedly mounted on the rotating plate 203; the laser measuring instrument 204 is used for laser ranging; the reference adjustment component 3 includes: a reference mounting frame 301, a reference slider 302, and a positioning bolt 303. The reference mounting frame 301 is arranged in a row, and each row of reference mounting frames 301 has four through holes. Reference sliders 302 are slidably mounted on each row of reference mounting frames 301; the reference sliders 302 on the row of reference mounting frames 301 are staggered in a stepped manner; positioning bolts 303 are threadedly connected to each row of reference sliders 302. Furthermore, the ends of a row of positioning bolts 303 are respectively pressed and attached to a row of reference mounting frames 301; the reference adjustment component 3 also includes: a reference frame 304 and a reference plate 305, with a reference frame 304 fixedly installed on a row of reference sliders 302; a reference plate 305 is fixedly installed on a row of reference frames 304; the row of reference plates 305 is used to reflect the laser emitted by the laser measuring instrument 204; by using the reference plate 305 to reflect the laser emitted by the laser measuring instrument 204, the reference accuracy can be ensured, avoiding the problem of poor accuracy in the traditional direct laser measurement of bridge piers, and ensuring measurement accuracy.

[0033] The fixed reflector 4 includes: a pre-embedded mounting shaft 401, the bottom of which has a tapered structure; the pre-embedded mounting shaft 401 is used to seal onto the concrete foundation; the pre-embedded mounting shaft 401 is located diagonally below the laser measuring instrument 204; the fixed reflector 4 also includes: a reflector block 402, which is fixedly installed on the top of the pre-embedded mounting shaft 401; the top of the reflector block 402 has a sloping structure; when the rotating plate 203 flips, the laser measuring instrument 204 aligns with the reflector block 402; the measuring mounting component 1 can be used to control the displacement adjustment of the laser measuring device 2. The positioning, with the reference sliders 302 on a row of reference mounting frames 301 arranged in a stepped, staggered manner, allows workers to easily measure the remaining piers from below the first pier, making the work more efficient. This eliminates the need to measure each pier individually, especially important in situations where there is a river beneath the piers, where manual handheld total station surveying is not only costly but also inefficient. The reference adjustment component 3 enables batch measurement of rows of piers, making it more suitable for surveying straight bridges. The structure is simple, and the fixed reflector 4 further enhances its effectiveness. To facilitate the calibration of the first pier and ensure the accuracy of the reference points for subsequent pier measurements, the second servo motor 202 drives the rotary plate 203 to rotate and reset the laser measuring instrument 204, aligning it with a row of reference plates 305. At this point, the first servo motor 103 drives the moving slider 201 to move, aligning the laser measuring instrument 204 with the first reference plate 305 for inspection. If the pier shows excessive settlement or deviates in the vertical direction of the laser beam from the laser measuring instrument 204, and if the deviation exceeds the standard, the laser beam from the laser measuring instrument 204 will not be projected onto the reference plate 305, resulting in a large measurement distance deviation. This indicates excessive deviation of the pier, requiring further surveying and inspection. Similarly, if the pier deviates excessively in the laser projection direction of the laser measuring instrument 204, the distance between the laser measuring instrument 204 and the reference plate 305 will change significantly. If the data measured by the laser measuring instrument 204 shows a large deviation, the measurement data should be recorded, and the bridge should be further inspected promptly. Adjustments can then be made during subsequent bridge deck construction based on the findings from the earlier surveying.

[0034] The laser measuring device 2 further includes: a compression control plate 205 and a compression strip 2051. The compression control plate 205 is fixedly installed on the bottom of the movable slider 201 by bolts; the compression strip 2051 is fixedly installed on the compression control plate 205, and the two sides of the compression strip 2051 are inclined structures; the compression strip 2051 is used to compress the measuring switch 105. By using the laser measuring device 2, in conjunction with the indicator light 104 and the measuring switch 105, the accuracy of the operator in controlling the displacement of the movable slider 201 to adjust the measurement position can be further guaranteed. This ensures the accuracy of the laser measuring instrument 204 when actually performing laser ranging, and avoids data distortion caused by excessive or insufficient displacement of the movable slider 201. The structure is simple and can directly provide light prompts. When the reference frame 304 is initially installed on the cured bridge pier, the laser... At each measurement position of the measuring instrument 204, that is, when the extrusion strip 2051 presses the measuring switch 105, the laser projection position of the laser measuring instrument 204 is basically kept concentric with the reference plate 305. The light can intuitively indicate to the staff, ensuring the detection accuracy. When the moving slider 201 moves, the extrusion control plate 205 is also moved along with it. When the extrusion strip 2051 on the extrusion control plate 205 is moved close to the measuring switch 105, the inclined structure on the side of the extrusion strip 2051 will press the measuring switch 105, thereby controlling the indicator light 104 to light up. When the indicator light 104 lights up, the first servo motor 103 can be stopped. At the same time, the different lights of the indicator light 104 also correspond to each pier, which can further help the staff distinguish the position of the pier being measured, making the structure more reasonable.

[0035] In Example 2, based on Example 1, the humidity indicator 5 includes: a mounting shell 501 and a sponge sheet 5011. The mounting shell 501 has two grooves at its bottom. A row of mounting shells 501 is provided, and the row of mounting shells 501 is respectively fixedly mounted on the top of the measuring mounting frame 101 and the top of a row of reference mounting frames 301. The sponge sheet 5011 is fixedly mounted on the top of the mounting shell 501. The humidity indicator 5 also includes: a humidity control switch 502 and a warning light 503. A humidity control switch 502 is fixedly mounted on the row of mounting shells 501. A WSK-Z(TH) type humidity control switch 502 can be used, and the detection end of the humidity control switch 502 passes through... Mounting housing 501; the detection end of humidity control switch 502 is attached to the bottom of sponge sheet 5011; a row of mounting housings 501 are respectively fixedly mounted with warning lights 503, and a row of humidity control switches 502 are respectively electrically connected to a row of warning lights 503. The use of humidity indicator 5 can reduce the interference of environmental factors such as frost and fog on laser measuring instrument 204, as well as the problem of reflection of the surface of reference plate 305 affected by water mist, by indicating humidity, which can improve detection accuracy. At the same time, the sponge sheet 5011 can help absorb water mist droplets without affecting the normal air drying of sponge sheet 5011, which is convenient for absorbing environmental moisture through sponge sheet 5011.

[0036] The working principle of this embodiment is as follows: After a row of bridge piers is cast and cured, the measuring mounting frame 101 and the row of reference mounting frames 301 are installed on the row of bridge piers by bolts passing through the through holes in the measuring mounting frame 101 and the row of reference mounting frames 301, respectively. (See attached diagram.) Figure 1As shown, the laser measuring instrument 204 is horizontally aligned with a row of reference plates 305, maintaining an accurate initial position. The measuring mounting frame 101 is installed on the first pier, and the second servo motor 202 drives the rotating plate 203 to rotate the laser measuring instrument 204. Then, a concrete platform is set on the ground, and the pre-embedded mounting shaft 401 is embedded in the concrete platform. At this time, the laser of the laser measuring instrument 204 is aligned with the reflector block 402. After the concrete platform solidifies, the distance measured by the laser measuring instrument 204 to the top inclined surface of the reflector block 402 is the initial distance. Subsequently, when it is necessary to measure the accuracy deviation of a row of piers, the laser measurement can be performed first. The distance between the measuring instrument 204 and the reflector block 402 is crucial. If the distance deviation is too large, the laser of the measuring instrument 204 will no longer be aligned with the reflector block 402, indicating that the first pier has excessive settlement or tilting. After confirming that the accuracy of the first pier is normal, the accuracy measurement work of a row of piers can be carried out. During the measurement, the second servo motor 202 drives the rotary plate 203 to rotate and reset the laser measuring instrument 204, so that it faces a row of reference plates 305. At this time, the first servo motor 103 drives the moving slider 201 to move. When the moving slider 201 moves, the extrusion control plate 205 is also moved along with it. The extrusion on the extrusion control plate 205... When the pressure strip 2051 is moved close to the measuring switch 105, the inclined structure on the side of the pressure strip 2051 presses the measuring switch 105, thereby controlling the indicator light 104 to light up. A row of measuring switches 105 corresponds to each reference plate 305. First, the laser measuring instrument 204 is aligned with the first reference plate 305 for detection. During detection, if the pier has excessive settlement or if there is a deviation in the vertical direction of the laser beam from the laser measuring instrument 204, and if the deviation exceeds the standard, the laser beam from the laser measuring instrument 204 cannot be projected onto the reference plate 305, resulting in a large measurement distance deviation. This indicates that the pier has excessively deviated and further surveying and inspection are required. Simultaneously, if the bridge... If the pier deviates excessively from the laser projection direction of the laser measuring instrument 204, the distance between the laser measuring instrument 204 and the reference plate 305 will change significantly. If the data measured by the laser measuring instrument 204 has a large deviation, the measurement data can be recorded, and the bridge needs to be further inspected in time. During the subsequent bridge deck construction, adjustments can be made in time based on the previous surveying and mapping prompts. When the pier at the first reference plate 305 has been measured and inspected, the laser measuring instrument 204 can be moved by moving the slider 201 to continue moving, so that the pier at the second reference plate 305 can be measured. In this way, the piers at the locations of a row of reference plates 305 can be measured respectively.

[0037] When the environment is foggy, the fog droplets in the air will adhere to the sponge sheet 5011. After being absorbed by the sponge sheet 5011, the humidity control switch 502 will detect that the humidity is too high and control the warning light 503 to light up as a warning. At this time, the staff should not carry out laser measurement work. As the fog dissipates, the water vapor on the sponge sheet 5011 gradually evaporates. When the humidity control switch 502 detects that the humidity has returned to the standard, the warning light 503 will automatically turn off, and the staff can carry out the measurement work normally.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surveying device for bridge construction, comprising a surveying mounting component (1), wherein a laser measuring device (2) is mounted on the surveying mounting component (1), characterized in that: The laser measuring device (2) is used to measure the accuracy of a row of bridge piers; a row of reference adjustment parts (3) is provided on the front side of the laser measuring device (2); the row of reference adjustment parts (3) is used to reflect the laser emitted by the laser measuring device (2); A fixed reflector (4) is provided below the laser measuring device (2); a humidity indicator (5) is provided on the laser measuring device (2) and a row of reference adjustment components (3); The measuring mounting component (1) includes: a measuring mounting frame (101), a drive screw (102), and a measuring switch (105). The drive screw (102) is rotatably mounted on the measuring mounting frame (101). The measuring mounting frame (101) has four through holes on its side. The laser measuring device (2) includes: a movable slider (201), a second servo motor (202), a rotary plate (203), and a laser measuring instrument (204). The movable slider (201) is slidably mounted on the measuring mounting frame (101); the drive screw (102) is threadedly connected to the movable slider (201); the second servo motor (202) is fixedly mounted on the side of the movable slider (201), and the output shaft of the second servo motor (202) passes through the movable slider (201); the rotary plate (203) is fixedly mounted on the output shaft of the second servo motor (202); the rotary plate (203) is rotatably mounted on the movable slider (201); the laser measuring instrument (204) is fixedly mounted on the rotary plate (203); the laser measuring instrument (204) is used for laser ranging. The laser measuring device (2) further includes: a compression control plate (205) and a compression bar (2051). The compression control plate (205) is fixedly installed on the bottom of the movable slider (201) by bolts. The compression bar (2051) is fixedly installed on the compression control plate (205), and the two sides of the compression bar (2051) are inclined structures. The compression bar (2051) is used for the compression measuring switch (105). The reference adjustment component (3) includes: a reference mounting bracket (301), a reference slider (302), and a positioning bolt (303). The reference mounting bracket (301) is arranged in a row, and each row of reference mounting brackets (301) has four through holes. Reference sliders (302) are slidably mounted on each row of reference mounting brackets (301). The reference sliders (302) on each row of reference mounting brackets (301) are staggered in a stepped manner. Positioning bolts (303) are threadedly connected to each row of reference sliders (302), and the ends of the positioning bolts (303) are pressed against each row of reference mounting brackets (301). The reference adjustment component (3) further includes: a reference frame (304) and a reference plate (305). A reference frame (304) is fixedly installed on a row of reference sliders (302); a reference plate (305) is fixedly installed on a row of reference frames (304); and a row of reference plates (305) are used to reflect the laser emitted by the laser measuring instrument (204). The fixed reflector (4) includes: a pre-embedded mounting shaft (401), the bottom of which is a conical structure; the pre-embedded mounting shaft (401) is used to be fixed on the concrete foundation; the pre-embedded mounting shaft (401) is located diagonally below the laser measuring instrument (204).

2. The surveying device for bridge construction according to claim 1, characterized in that: The measuring mounting component (1) further includes: a first servo motor (103) and an indicator light (104). The first servo motor (103) is fixedly installed inside the measuring mounting frame (101). The output shaft of the first servo motor (103) is fixedly installed at the end of the drive screw (102). A row of indicator lights (104) is fixedly installed at the bottom of the measuring mounting frame (101), and the lights of the row of indicator lights (104) are different colors. A row of measuring switches (105) is fixedly installed at the bottom of the measuring mounting frame (101), and the row of measuring switches (105) is electrically connected to the row of indicator lights (104) respectively.

3. The surveying device for bridge construction according to claim 1, characterized in that: The fixed reflector (4) further includes: a reflector block (402), which is fixedly installed on the top of the pre-embedded mounting shaft (401); the top of the reflector block (402) is a sloping structure; when the rotating plate (203) is flipped, the laser measuring instrument (204) aligns with the reflector block (402).

4. The surveying device for bridge construction according to claim 1, characterized in that: The humidity indicator (5) includes: a mounting shell (501) and a sponge sheet (5011). The mounting shell (501) has two grooves at the bottom. The mounting shell (501) is arranged in a row, and the row of mounting shells (501) is fixedly installed on the top of the measuring mounting frame (101) and the top of the reference mounting frame (301) respectively. The sponge sheet (5011) is fixedly installed on the top of the mounting shell (501).

5. A surveying device for bridge construction according to claim 4, characterized in that: The humidity indicator (5) further includes a humidity control switch (502) and a warning light (503). A row of the mounting housings (501) are respectively fixedly installed with a humidity control switch (502), and the detection end of the humidity control switch (502) passes through the mounting housing (501). The detection end of the humidity control switch (502) is attached to the bottom of the sponge sheet (5011). A row of the mounting housings (501) are respectively fixedly installed with a warning light (503), and a row of humidity control switches (502) are respectively electrically connected to a row of warning lights (503).

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