Surveying and mapping device for bridge construction

Abstract

The invention discloses a surveying and mapping device for bridge construction, and relates to the technical field of bridge pier laser surveying and mapping. Comprising a measuring installation part, and a laser measuring device is installed on the measuring installation part and used for measuring the accuracy of the rows of piers. A row of reference adjusting pieces are arranged on the front side of the laser measuring device; the row of reference adjusting pieces are respectively used for reflecting laser emitted by a laser measuring device; a fixed reflecting piece is arranged below the laser measuring device; the displacement of the laser measuring device can be controlled by adopting the measuring mounting piece to adjust the measuring position, and the reference sliding blocks on the row of reference mounting frames are arranged in a stepped and staggered manner, so that a worker can conveniently measure the other row of piers below the first pier; the problems that in the background technology, an existing surveying and mapping device for bridge construction is not convenient to rapidly switch and measure a plurality of bridge piers, and the measurement efficiency is low are solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bridge pier laser surveying, and particularly relates to a surveying device for bridge construction. BACKGROUND

[0002] In actual bridge construction work, the core task of construction surveying is to realize accurate positioning and attitude control of piers through measurement, and the surveying work of the bridge directly affects the construction quality. In the construction work of the pier part, the surveying work needs to be performed on the already cast piers to obtain the settlement and skew of the piers, and the construction is adjusted in a timely manner. For the surveying work of the piers in a row, a total station is usually used to perform laser measurement on each pier. The total station is widely used due to its flexible use and comprehensive functions. However, the existing surveying device for bridge construction needs to measure each pier to obtain surveying data, and the measurement efficiency is low. In addition, in special construction environments such as river crossings, the measurement difficulty is further increased, it is inconvenient to quickly switch measurement of multiple piers, the labor cost is also high, and the traditional laser measurement method is inconvenient to assist in prompting interference when the environment humidity is high due to factors such as frosting, rain and fog.

[0003] Therefore, the application provides a surveying device for bridge construction. SUMMARY

[0004] The application aims to provide a surveying device for bridge construction to solve the problem that the existing surveying device for bridge construction is inconvenient to quickly switch measurement of multiple piers and has low measurement efficiency.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a surveying device for bridge construction, comprising a measurement mounting piece, a laser measurement device is installed on the measurement mounting piece, the laser measurement device is used for measuring the precision of the piers in a row, a row of reference adjusting pieces are arranged on the front side of the laser measurement device, the reference adjusting pieces are used for reflecting the laser emitted by the laser measurement device, a fixed reflecting piece is arranged below the laser measurement device, humidity prompting pieces are arranged on the laser measurement device and the reference adjusting pieces, respectively, the measurement mounting piece comprises a measurement mounting frame and a driving lead screw, the driving lead screw is rotatably installed on the measurement mounting frame, and four through holes are arranged on the side surface of the measurement mounting frame.

[0006] Preferably, the measuring mount further comprises a first servo motor, a prompt light and a measurement switch, the first servo motor is fixedly installed inside the measuring mount; the output shaft of the first servo motor is fixedly installed at the end of the drive lead screw; a row of prompt lights is fixedly installed at the bottom of the measuring mount, and the lights of the row of prompt lights are different in color; a row of measurement switches is fixedly installed at the bottom of the measuring mount, and the row of measurement switches are respectively electrically connected to the row of prompt lights.

[0007] Preferably, the laser measuring device comprises a moving slider, a second servo motor, a rotating plate and a laser measuring instrument, the moving slider is slidingly installed on the measuring mount; the drive lead screw is threadedly connected to the moving slider; the second servo motor is fixedly installed on the side of the moving slider, and the output shaft of the second servo motor penetrates through the moving slider; the rotating plate is fixedly installed on the output shaft of the second servo motor; the rotating plate is rotatably installed on the moving slider; the laser measuring instrument is fixedly installed on the rotating plate; and the laser measuring instrument is used for laser ranging.

[0008] Preferably, the laser measuring device further comprises an extrusion control plate and an extrusion strip, the extrusion control plate is fixedly installed on the bottom of the moving slider through bolts; the extrusion strip is fixedly installed on the extrusion control plate, and the two sides of the extrusion strip are inclined surfaces; and the extrusion strip is used for extruding the measurement switch.

[0009] Preferably, the reference adjusting part comprises a reference mount, a reference slider and a positioning bolt, a row of the reference mounts are provided, four through holes are respectively provided on the row of reference mounts, and a reference slider is slidingly installed on each of the row of reference mounts; the reference sliders on the row of reference mounts are arranged in a stepped staggered manner; and a positioning bolt is threadedly connected to each of the row of reference sliders, and the ends of the row of positioning bolts are extruded and fitted to the row of reference mounts.

[0010] Preferably, the reference adjusting part further comprises a reference frame and a reference plate, a reference frame is fixedly installed on each of the row of reference sliders; a reference plate is fixedly installed on each of the row of reference frames; and each of the row of reference plates is used for reflecting the laser emitted by the laser measuring instrument.

[0011] Preferably, the fixed reflecting part comprises a pre-buried installation shaft, the bottom of the pre-buried installation shaft is a tapered structure; the pre-buried installation shaft is used for being sealed in the concrete pile cap; and the pre-buried installation shaft is located obliquely below the laser measuring instrument.

[0012] Preferably, the fixed reflecting part further comprises a reflecting block, the reflecting block is fixedly installed on the top of the pre-buried installation shaft; the top of the reflecting block is an inclined surface; and when the rotating plate is flipped, the laser measuring instrument is aligned with the reflecting block.

[0013] Preferably, the humidity prompt piece comprises: a mounting shell and a sponge piece, the bottom of the mounting shell is provided with two grooves; the mounting shell is provided with a row, and a row of mounting shells are fixedly installed on the top of the measuring mounting frame and a row of reference mounting frames respectively; the top of the mounting shell is fixedly installed with the sponge piece.

[0014] Preferably, the humidity prompt piece further comprises: a humidity control switch and a warning light, a row of the mounting shells are fixedly installed with the humidity control switch respectively, and the detection end of the humidity control switch penetrates through the mounting shell; the detection end of the humidity control switch is attached to the bottom of the sponge piece; a row of the mounting shells are fixedly installed with the warning light respectively, and a row of the humidity control switches are electrically connected with a row of the warning lights respectively.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The measuring installation piece can control the displacement adjustment of the laser measuring device to measure the position, and the reference sliders on the reference mounting frames are arranged in a stepped staggered manner, so that the staff can measure the remaining bridge piers under the first bridge pier, which is more efficient, and the staff does not need to measure the bridge piers one by one, especially when there is a river under the bridge pier, it is difficult for the staff to measure the bridge piers one by one; the fixed reflecting piece can facilitate the calibration of the first bridge pier, so as to ensure that the reference accuracy meets the standard during subsequent bridge pier measurement; the laser measuring device, in combination with the prompt light and the measurement switch, can further ensure the accuracy of the staff when controlling the displacement adjustment of the moving slider to measure the position, and can ensure the accuracy of the laser measuring instrument when actually performing laser ranging, so as to avoid the distortion of the detection data caused by excessive or insufficient displacement of the moving slider.

[0017] The humidity prompt piece can reduce the interference of environmental frosting, fogging and other factors on the laser measuring instrument, and the influence of water mist on the reflection of the reference plate surface, so as to improve the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a schematic view of a bridge construction surveying device installed behind a row of bridge piers according to the present application;

[0019] Figure 2 FIG. 2 is a structural schematic view of a bridge construction surveying device according to the present application;

[0020] Figure 3 FIG. 3 is a structural schematic view of a measuring installation piece according to the present application;

[0021] Figure 4 FIG. 4 is a schematic view of the installation position of a driving screw rod according to the present application;

[0022] Figure 5 FIG. 5 is a schematic view of a bridge construction surveying device according to the present application; Figure 2Enlarged view of the structure of the middle E region;

[0023] Figure 6 Schematic view of the installation position of the extrusion strip of the present application;

[0024] Figure 7 Schematic view of the structure of the reference adjusting member of the present application;

[0025] Figure 8 Schematic view of the structure of the present application Figure 7 Enlarged view of the structure of the middle G region;

[0026] Figure 9 Schematic view of the structure of the fixed reflecting member of the present application;

[0027] Figure 10 Schematic view of the structure of the humidity indicating member of the present application.

[0028] In the figure: 1, measurement installation member; 101, measurement installation rack; 102, driving screw rod; 103, first servo motor; 104, indicating lamp; 105, measurement switch; 2, laser measurement device; 201, moving slider; 202, second servo motor; 203, rotating plate; 204, laser measurement instrument; 205, extrusion control board; 2051, extrusion strip; 3, reference adjusting member; 301, reference installation rack; 302, reference slider; 303, positioning bolt; 304, reference rack; 305, reference plate; 4, fixed reflecting member; 401, pre-buried installation shaft; 402, reflecting block; 5, humidity indicating member; 501, installation shell; 5011, sponge sheet; 502, humidity control switch; 503, warning lamp. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Embodiment one: please refer to Figures 1 to 10 as shown:

[0031] The application provides a technical scheme: a surveying and mapping device for bridge construction, comprising a measuring mounting piece 1, a laser measuring device 2 is installed on the measuring mounting piece 1, the laser measuring device 2 is used for measuring the precision of the row bridge pier; a row of reference adjusting pieces 3 are arranged on the front side of the laser measuring device 2; the row of reference adjusting pieces 3 are respectively used for reflecting the laser emitted by the laser measuring device 2; a fixed reflecting piece 4 is arranged below the laser measuring device 2; the laser measuring device 2 and the row of reference adjusting pieces 3 are respectively provided with humidity prompting pieces 5; the measuring mounting piece 1 comprises a measuring mounting frame 101 and a driving lead screw 102, the driving lead screw 102 is rotatably installed on the measuring mounting frame 101; four through holes are arranged on the side surface of the measuring mounting frame 101.

[0032] The measurement mounting piece 1 further comprises a first servo motor 103, a prompt light 104 and a measurement switch 105. The first servo motor 103 is fixedly installed inside the measurement mounting frame 101. The output shaft of the first servo motor 103 is fixedly installed at the end of the drive lead screw 102. A row of prompt lights 104 is fixedly installed at the bottom of the measurement mounting frame 101. The light colors of the prompt lights 104 are different. A row of measurement switches 105 is fixedly installed at the bottom of the measurement mounting frame 101. The measurement switches 105 are respectively electrically connected with the prompt lights 104. The laser measurement device 2 comprises a moving slider 201, a second servo motor 202, a rotating plate 203 and a laser measurement instrument 204. The laser measurement instrument 204 can be a Dimetix-DPE-10-500 type laser measurement instrument. The moving slider 201 is slidingly installed on the measurement mounting frame 101. The drive lead screw 102 is threadedly connected with the moving slider 201. The second servo motor 202 is fixedly installed at the side of the moving slider 201. The output shaft of the second servo motor 202 penetrates through the moving slider 201. The rotating plate 203 is fixedly installed on the output shaft of the second servo motor 202. The rotating plate 203 is rotatably installed on the moving slider 201. The laser measurement instrument 204 is fixedly installed on the rotating plate 203. The laser measurement instrument 204 is used for laser ranging. The reference adjusting piece 3 comprises a reference mounting frame 301, a reference slider 302 and a positioning bolt 303. The reference mounting frame 301 is provided with a row of through holes. The reference mounting frame 301 is provided with four reference sliders 302. The reference sliders 302 are slidingly installed on the reference mounting frame 301. The reference sliders 302 are arranged in a stepped staggered manner. The positioning bolts 303 are threadedly connected with the reference sliders 302. The ends of the positioning bolts 303 are respectively pressed and fitted with the reference mounting frame 301. The reference adjusting piece 3 further comprises a reference frame 304 and a reference plate 305. The reference frame 304 is fixedly installed on the reference slider 302. The reference plate 305 is fixedly installed on the reference frame 304. The reference plate 305 is used for reflecting the laser emitted by the laser measurement instrument 204. The use of the reference plate 305 can ensure the reference accuracy and avoid the problem of poor accuracy of the traditional direct laser measurement of the pier. The use of the reference plate 305 can ensure the measurement accuracy.

[0033] The fixed reflection part 4 comprises a pre-buried mounting shaft 401, the bottom of which is a conical structure; the pre-buried mounting shaft 401 is used for sealing in the concrete bearing platform; the pre-buried mounting shaft 401 is located obliquely below the laser measuring instrument 204; the fixed reflection part 4 further comprises a reflection block 402, which is fixedly installed at the top of the pre-buried mounting shaft 401; the top of the reflection block 402 is a beveled structure; when the rotary plate 203 is flipped, the laser measuring instrument 204 is aligned with the reflection block 402; the measuring installation 1 can be used to control the displacement adjustment of the laser measuring device 2 to measure the position, and the reference slide block 302 on the reference mounting rack 301 is arranged in a stepped staggered manner, which can facilitate the staff to measure the remaining piers under the first pier, is more efficient, and does not need to measure each pier in a row, especially for the case that there is a river under the pier, manual holding of the total station instrument for individual surveying not only has high cost, but also has low efficiency; the reference adjusting part 3 can realize batch measurement of the piers in a row, and is more suitable for the surveying scene of the straight bridge; the structure is simple, and the fixed reflection part 4 can be used to facilitate the calibration of the first pier, so that the reference accuracy meets the standard during subsequent pier measurement; the second servo motor 202 drives the rotary plate 203 to flip and reset the laser measuring instrument 204, and the laser measuring instrument 204 is directed to the reference plate 305; at this time, the first servo motor 103 drives the moving slide block 201 to move, and the laser measuring instrument 204 is first aligned with the first reference plate 305 for detection; if the pier has excessive settlement or deviation in the vertical direction of the laser of the laser measuring instrument 204, the laser of the laser measuring instrument 204 cannot be projected on the reference plate 305, the measurement distance deviation is large, the pier deviates excessively, and further surveying and checking work is needed; 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 changes greatly, and the measurement data of the laser measuring instrument 204 deviates greatly; when the measurement data is recorded, the bridge needs to be further checked in time, and the bridge is adjusted in time according to the previous surveying and mapping prompt during the subsequent bridge construction.

[0034] The laser measuring device 2 further comprises an extrusion control plate 205 and an extrusion strip 2051, the bottom of the moving slider 201 is fixedly installed with the extrusion control plate 205 through a bolt, the extrusion control plate 205 is fixedly installed with the extrusion strip 2051, and the two sides of the extrusion strip 2051 are in a slope structure; the extrusion strip 2051 is used for extruding the measuring switch 105; by adopting the laser measuring device 2, cooperating with the prompt lamp 104 and the measuring switch 105, the accuracy of the worker in controlling the displacement of the moving slider 201 to adjust the measuring position can be further ensured, the precision of the laser measuring instrument 204 in actually performing laser ranging can be ensured, the distortion of the detection data caused by excessive displacement or insufficient displacement of the moving slider 201 can be avoided, the structure is simple, the light prompt can be directly performed, when the reference frame 304 is initially installed on the solidified pier, the laser projection position of the laser measuring instrument 204 at each measuring position, that is, when the extrusion strip 2051 extrudes the measuring switch 105, is basically kept concentric with the reference plate 305, the worker can be directly and intuitively prompted by the light, so that the detection precision is ensured, when the moving slider 201 moves, the extrusion control plate 205 is also driven to displace, when the extrusion strip 2051 on the extrusion control plate 205 is driven to move close to the measuring switch 105, the side slope structure of the extrusion strip 2051 will press the measuring switch 105, then the prompt lamp 104 is controlled to be lighted to prompt, the worker can control the first servo motor 103 to stop driving when manually observing that the prompt lamp 104 is lighted, and meanwhile, the different lights of the prompt lamp 104 also correspond to each pier, so that the worker can further distinguish the pier position being measured, and the structure is more reasonable.

[0035] In the second embodiment, the humidity prompter 5 comprises a mounting shell 501 and a sponge sheet 5011. The bottom of the mounting shell 501 is provided with two grooves. The mounting shell 501 is provided with a row, and the row of mounting shells 501 are respectively fixedly installed on the top of the measurement mounting frame 101 and the row of reference mounting frames 301. The sponge sheet 5011 is fixedly installed on the top of the mounting shell 501. The humidity prompter 5 further comprises a humidity control switch 502 and a warning light 503. The row of mounting shells 501 are respectively fixedly installed with the humidity control switch 502. The WSK-Z(TH) type humidity control switch 502 can be used, and the detection end of the humidity control switch 502 penetrates through the mounting shell 501. The detection end of the humidity control switch 502 is attached to the bottom of the sponge sheet 5011. The row of mounting shells 501 are respectively fixedly installed with the warning light 503, and the row of humidity control switches 502 are respectively electrically connected with the row of warning lights 503. The humidity prompter 5 can reduce the interference of the laser measuring instrument 204 caused by environmental frost, fog and other factors, and the reflection problem of the surface of the reference plate 305 affected by water mist, so as to improve the detection accuracy. At the same time, the sponge sheet 5011 can assist in absorbing water mist droplets, and does not affect the normal air drying of the sponge sheet 5011, so as to facilitate the absorption of environmental humidity by the sponge sheet 5011.

[0036] The working principle of the embodiment is that after a row of piers are respectively poured, formed and solidified, the measurement mounting frame 101 and the row of reference mounting frames 301 are installed on the row of piers by penetrating through the through holes on the measurement mounting frame 101 and the row of reference mounting frames 301 by bolts, as shown in the attached Figure 1As shown, the laser measuring instrument 204 is horizontally aligned with a row of reference plates 305 to keep the initial position accurate; the measuring mount 101 is installed on the first pier, the laser measuring instrument 204 is flipped by driving the rotating plate 203 through the second servo motor 202, then a concrete cushion is set on the ground, the embedded installation shaft 401 is embedded on the concrete cushion, at this time the laser of the laser measuring instrument 204 is kept aligned with the reflecting block 402, and after the concrete cushion is solidified, the initial distance is measured by the laser measuring instrument 204 to the top inclined surface of the reflecting block 402, and the distance between the laser measuring instrument 204 and the reflecting block 402 is measured when the precision deviation of the row of piers needs to be measured, once the distance deviation is large, the laser of the laser measuring instrument 204 is no longer aligned with the reflecting block 402, indicating that the first pier has excessive settlement or is skewed; after confirming that the precision of the first pier is normal, the precision measurement work of a row of piers can be performed, when measuring, the laser measuring instrument 204 is flipped and reset by driving the rotating plate 203 through the second servo motor 202, and is directed to a row of reference plates 305; at this time, the moving slider 201 is moved by driving the moving slider 201 through the first servo motor 103, and the pressing control plate 205 is also driven to displace when the moving slider 201 moves, when the pressing strip 2051 on the pressing control plate 205 is driven to approach the measuring switch 105, the side inclined surface structure of the pressing strip 2051 will press the measuring switch 105, and then the control prompt lamp 104 is turned on to prompt, and a row of measuring switches 105 correspond to each reference plate 305; first, control the laser measuring instrument 204 to align with the first reference plate 305 for detection, once the pier has excessive settlement or deviation in the vertical direction of the laser of the laser measuring instrument 204, once the deviation exceeds the standard, the laser of the laser measuring instrument 204 cannot be projected on the reference plate 305, the measurement distance deviation is large, indicating that the pier deviates excessively, and further surveying and mapping inspection work needs to be performed, and if the pier deviates excessively in the direction of the laser projection of the laser measuring instrument 204, the distance between the laser measuring instrument 204 and the reference plate 305 changes greatly, when the measurement data deviation is large, the data can be recorded, and the bridge needs to be further inspected in time, the bridge is adjusted in time through the previous surveying and mapping prompt during the bridge construction, when the pier at the first reference plate 305 is measured and detected, the laser measuring instrument 204 is continuously moved by driving the moving slider 201, and the measurement work of the pier at the second reference plate 305 is performed, and in this way, the piers at a row of reference plates 305 are measured respectively;

[0037] When the environment is foggy, the fog droplets in the air will adhere to the sponge sheet 5011, and after being absorbed by the sponge sheet 5011, the humidity exceeding the standard can be detected through the humidity control switch 502, the warning light 503 is turned on to prompt, at this time, the staff should not carry out the laser measurement work; with the dispersion of the environmental fog, the water vapor on the sponge sheet 5011 gradually evaporates, when the humidity control switch 502 detects that the humidity returns to the standard, the warning light 503 is automatically turned off, and the staff can normally carry out the measurement work.

[0038] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as 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) and a drive screw (102), wherein the drive screw (102) is rotatably mounted on the measuring mounting frame (101); and the measuring mounting frame (101) has four through holes on its side.

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), an indicator light (104), and a measuring switch (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) 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 each row of measuring switches (105) is electrically connected to a row of indicator lights (104).

3. The surveying device for bridge construction according to claim 2, characterized in that: 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.

4. The surveying device for bridge construction according to claim 3, characterized in that: 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).

5. A surveying device for bridge construction according to claim 3, characterized in that: 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).

6. A surveying device for bridge construction according to claim 5, characterized in that: 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).

7. A surveying device for bridge construction according to claim 3, characterized in that: 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).

8. A surveying device for bridge construction according to claim 7, 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).

9. A surveying device for bridge construction according to claim 5, 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).

10. A surveying device for bridge construction according to claim 9, 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).

Images