A laser measuring device for detecting the bending degree of a steel structure

Abstract

The application relates to the technical field of laser detection, and discloses a laser measuring device for steel structure bending degree detection, which comprises a detection frame for loading a steel pipe body, one hydraulic rod is arranged on each side of the detection frame, a conical limiting block is fixedly arranged at the output end of each hydraulic rod, the steel pipe body is arranged between the two conical limiting blocks, and a motor body is arranged on the detection frame. The two piston bodies fixed to the output end of the electric push rod body are made to slide by starting the electric push rod body, the dustproof transmission assembly and the water-washing dust-sticking assembly are cooperated, the dustproof wrapping of the roller can be realized when the laser detection is finished, the aging corrosion of the roller caused by long-time exposure to the external environment is avoided, the problem that the laser ranging is finally deviated is avoided, and the dust-sticking air bag roller can be automatically shrunk at this time. The dust-sticking air bag roller is coated with water-washing glue, the dust-sticking air bag roller can be directly washed, and the subsequent use is facilitated.

Description

Technical Field

[0001] This invention relates to the field of laser detection technology, specifically to a laser measuring device for detecting the curvature of steel structures. Background Technology

[0002] Laser ranging uses a laser as a light source for distance measurement. Based on the laser's working mode, it is divided into continuous lasers and pulsed lasers. Gas lasers such as helium-neon, argon-ion, and krypton-cadmium operate in continuous output mode and are used for phase-type laser ranging. Dual heterojunction gallium arsenide semiconductor lasers are used for infrared ranging, while solid-state lasers such as ruby ​​and neodymium glass are used for pulsed laser ranging. Due to the good monochromaticity and strong directionality of lasers, coupled with the semiconductor integration of electronic circuits, laser rangefinders, compared with photoelectric rangefinders, can not only operate day and night but also improve ranging accuracy.

[0003] Patent application CN118464647A includes a testing frame. The testing frame internally comprises a clamping mechanism, a pressing mechanism, and a laser rangefinder. The clamping mechanism is located on the left and right sides of the testing frame for clamping the steel beam to be tested. The pressing mechanism is located at the top of the testing frame for pressing the steel beam to be tested. The laser rangefinder is located at the bottom of the testing frame for detecting the curvature of the steel beam to be tested. The pressing mechanism includes a sliding frame slidably connected inside the testing frame. Through the cooperation of the above structures, the pressing of one or more different positions on the steel beam can be flexibly controlled, making the testing more comprehensive and accurate. Furthermore, the position of the steel beam does not need to be adjusted during pressing, making the detection of bending deformation of the steel beam more convenient.

[0004] In the aforementioned patents or prior art, in the detection of the curvature of steel structures (e.g., steel pipes), laser rangefinders rely on receiving laser beams reflected from the target surface to calculate distance. The laser beam emitted by the instrument is typically very narrow. When the laser beam irradiates a curved surface (whether convex or concave), according to the law of reflection (the angle of incidence equals the angle of reflection), the direction of the reflected beam usually changes. The reflected beam does not return along its original path to the rangefinder's receiver, causing it to deviate completely from the receiver's range. The instrument will be unable to detect the echo signal, leading to measurement failure (display error or no reading). Furthermore, only a portion of the reflected light is captured by the receiver, resulting in a very weak signal, which may lead to measurement instability or increased error. In most detection environments, dust often adheres to the surface of the steel pipe, and dust particles scatter the laser beam. The light that should have reflected back to the receiver along a specific path deviates from its direction due to scattering, weakening the intensity of the light signal received by the receiver and consequently causing deviations in the detected curvature. Summary of the Invention

[0005] The problem this invention aims to solve is that most existing laser rangefinders exhibit bending deviations when inspecting steel pipes.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a laser measuring device for detecting the curvature of steel structures, comprising a testing frame for loading a steel pipe body, a hydraulic rod installed on each side of the testing frame, a conical limiting block fixedly provided at the output end of each hydraulic rod, and the steel pipe body disposed between two conical limiting blocks, a motor body installed on the testing frame, a threaded rod connected to the output end of the motor body via a rotating shaft, a testing seat slidably disposed on the testing frame, and the testing seat and the threaded rod being connected by a thread, and a laser detection component disposed on the testing seat;

[0007] The laser detection assembly includes a detection ring fixed on a detection base, a plurality of mounting bases fixedly disposed on the detection ring, a ranging slide mounted on each mounting base, a roller rotatably disposed on the bottom of the ranging slide, two return springs fixedly disposed between the mounting base and the ranging slide, a laser rangefinder mounted on the top of the mounting base, a laser reflector fixedly disposed on the top of the ranging slide, and the output end of the laser rangefinder located above the laser reflector, and a mounting shell fixedly disposed on the bottom of the ranging slide;

[0008] Each of the mounting bases is equipped with a dustproof transmission component and a water-washable dust-adhesive component.

[0009] Preferably, a motor mounting base is fixedly provided on the testing frame, and the motor body is mounted on the motor mounting base. One end of the threaded rod is rotatably connected to the testing frame, and a threaded groove matching the threaded rod is opened on the testing ring. The threaded rod is located below the steel pipe body.

[0010] Preferably, the mounting seats are arranged in a ring array on the detection ring, and each mounting seat has a lifting and lowering groove that matches the ranging slide seat, and the mounting seat has a spring mounting groove that matches the two return springs.

[0011] Preferably, the dustproof transmission assembly includes two electric push rod bodies installed on both sides of the mounting base. Each electric push rod body has an extension rod fixedly installed at its output end, and a piston rod fixedly installed at the bottom end of the extension rod. Two first piston cylinders are fixedly installed on the mounting base. A piston body is fixedly installed at each end of the piston rod, and the piston body near the first piston cylinder is slidably connected to the inner wall of the first piston cylinder. Two inflatable airbags are fixedly installed inside the mounting shell, and each inflatable airbag is hollow. Each inflatable airbag has two air inlets, and a first air guide pipe is provided between each air inlet and the first piston cylinder. Two sliders are fixedly installed on each inflatable airbag. Two guide plates are fixedly installed on the inner wall of the mounting shell, and the two sliders are slidably connected to the guide plates.

[0012] Preferably, the two electric push rod bodies are symmetrically arranged about the mounting base. The output end of the electric push rod body is provided with a push rod, and the push rod is fixedly connected to the extension rod. Each first piston cylinder is provided with a first movable hole that matches the piston rod, and each first piston cylinder is provided with a first piston groove that matches the piston body.

[0013] Preferably, the first piston cylinder has a first air guide hole at one end, and the first air guide hole is connected to the air inlet through a first air guide pipe. The guide plate has two pairs of guide grooves that match the two pairs of sliders.

[0014] Preferably, the water-washing adhesive assembly includes two second piston cylinders fixed on the mounting base, each second piston cylinder being located on one side of the first piston cylinder. The piston rod is slidably connected to the second piston cylinder, and the piston body near the second piston cylinder is slidably connected to the inner wall of the second piston cylinder. A limiting seat is fixedly provided on each side of the mounting shell, and a bearing seat is rotatably provided on each of the two limiting seats. An adhesive airbag roller is fixedly provided between the two bearing seats. Each limiting seat is provided with an air passage hole communicating with the adhesive airbag roller. A second air guide hole is provided on the second piston cylinder, and a second air guide pipe is fixedly provided between the second air guide hole and the air passage hole.

[0015] Preferably, each of the second piston cylinders is provided with a second movable hole that matches the piston rod, and each of the first piston cylinders is provided with a second piston groove that matches the piston body.

[0016] Preferably, the two limiting seats are symmetrically arranged with respect to the mounting shell, and the two second piston cylinders are symmetrically arranged with respect to the mounting seats.

[0017] Preferably, the dust-adhesive airbag roller is hollow inside, and both bearing seats are annular.

[0018] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0019] (1) By starting the motor body, the present invention can detect the curvature of the steel pipe with the cooperation of the laser detection component. The reflected beam emitted by the laser rangefinder is located inside the mounting base and the reflected beam is irradiated on the relatively flat platform of the laser reflector, which enables the laser rangefinder to effectively receive the reflected beam, thereby improving the accuracy of detection. This avoids the problem that the reflected beam emitted by the laser rangefinder is irradiated on the curved surface of the steel pipe with a large curvature, causing the reflected beam to completely deviate from the receiving range of the receiver. In addition, when the reflected beam emitted by the laser rangefinder is irradiated on the concave surface of the steel pipe, the error caused by the laser beam being reflected multiple times inside the concave surface can be perfectly avoided with the cooperation of the laser detection component.

[0020] (2) By activating the electric push rod body, the two piston bodies fixed to its output end slide. With the cooperation of the dustproof transmission component and the water-washing dust-adhesive component, the roller can be wrapped to prevent dust at the end of the laser detection, avoiding the aging and corrosion caused by the roller being in the external environment for a long time, which would eventually lead to the deviation of the laser ranging. At this time, the dust-adhesive airbag roller can automatically shrink. Since the dust-adhesive airbag roller is coated with water-washing adhesive, it can be directly rinsed for subsequent use. During the laser detection, the two inflatable airbags on the roller can shrink, and the dust-adhesive airbag roller can expand rapidly and completely fit the arc-shaped outer wall of the steel pipe body, and clean the path on the steel pipe body that needs to be laser detected. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the side structure of the detection frame of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection structure between the laser detection component and the detection seat of the present invention;

[0024] Figure 4 This is a schematic diagram of the dustproof transmission assembly structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the ranging slide block of the present invention;

[0026] Figure 6 This is a schematic diagram of the guide disk structure of the present invention;

[0027] Figure 7 For the present invention Figure 6 A magnified view of part A in the image;

[0028] Figure 8 This is a schematic diagram of the water-washing dust-adhesive assembly structure of the present invention;

[0029] Figure 9 This is an exploded view of the laser detection component and dustproof transmission component of the present invention;

[0030] Figure 10 This is a schematic diagram of the cross-sectional connection structure between the first piston cylinder and the second piston cylinder of the present invention.

[0031] In the diagram: 1. Detection frame; 11. Hydraulic rod; 12. Conical limit block; 13. Detection seat; 14. Threaded rod; 141. Motor body; 15. Steel pipe body;

[0032] 2. Laser detection assembly; 21. Detection ring; 22. Mounting base; 23. Range measuring slide; 231. Return spring; 24. Roller; 25. Laser rangefinder; 251. Laser reflector; 26. Mounting housing;

[0033] 3. Dustproof transmission assembly; 31. Electric push rod body; 32. Extension rod; 33. Piston rod; 331. Piston body; 34. First piston cylinder; 35. First air guide pipe; 36. Inflatable airbag; 37. Slider; 38. Guide plate;

[0034] 4. Water-washing dust-adhesive assembly; 41. Second piston cylinder; 42. Second air guide pipe; 43. Dust-adhesive airbag roller; 44. Bearing housing. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0036] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0037] like Figures 1 to 10 As shown, the present invention provides a laser measuring device for detecting the curvature of steel structures, including a testing frame 1 that loads a steel pipe body 15. A hydraulic rod 11 is installed on each side of the testing frame 1. A conical limiting block 12 is fixedly provided at the output end of each hydraulic rod 11, and the steel pipe body 15 is disposed between the two conical limiting blocks 12. A motor body 141 is installed on the testing frame 1. A threaded rod 14 is connected to the output end of the motor body 141 through a rotating shaft. A testing seat 13 is slidably disposed on the testing frame 1, and the testing seat 13 is threadedly connected to the threaded rod 14. A laser detection component 2 is disposed on the testing seat 13.

[0038] The laser detection assembly 2 includes a detection ring 21 fixed on the detection base 13. Multiple mounting bases 22 are fixedly mounted on the detection ring 21. A ranging slide 23 is slidably mounted on each mounting base 22. A roller 24 is rotatably mounted on the bottom of the ranging slide 23. Two return springs 231 are fixedly mounted between the mounting base 22 and the ranging slide 23. A laser rangefinder 25 is mounted on the top of the mounting base 22. A laser reflector 251 is fixedly mounted on the top of the ranging slide 23, and the output end of the laser rangefinder 25 is located above the laser reflector 251. A mounting shell 26 is fixedly mounted on the bottom of the ranging slide 23.

[0039] Each mounting base 22 is equipped with a dustproof transmission component 3 and a water-washable dust-adhesive component 4.

[0040] A motor mounting base is fixedly installed on the testing frame 1, and the motor body 141 is installed on the motor mounting base. One end of the threaded rod 14 is rotatably connected to the testing frame 1. The testing ring 21 has a threaded groove that matches the threaded rod 14. The threaded rod 14 is located below the steel pipe body 15.

[0041] Multiple mounting bases 22 are arranged in a ring array on the detection ring 21. Each mounting base 22 has a lifting and lowering groove that matches the ranging slide 23. The mounting base 22 also has a spring mounting groove that matches the two return springs 231.

[0042] The dustproof transmission assembly 3 includes two electric push rod bodies 31 installed on both sides of the mounting base 22. Each electric push rod body 31 has an extension rod 32 fixedly installed at its output end. A piston rod 33 is fixedly installed at the bottom end of the extension rod 32. Two first piston cylinders 34 are fixedly installed on the mounting base 22. A piston body 331 is fixedly installed at each end of the piston rod 33. The piston body 331 on the side closer to the first piston cylinder 34 is slidably connected to the inner wall of the first piston cylinder 34. Two inflatable airbags 36 are fixedly installed inside the mounting shell 26. Each inflatable airbag 36 is hollow inside. Each inflatable airbag 36 has two air inlets. A first air guide pipe 35 is provided between each air inlet and the first piston cylinder 34. Two sliders 37 are fixedly installed on each inflatable airbag 36. Two guide plates 38 are fixedly installed on the inner wall of the mounting shell 26. The two sliders 37 are slidably connected to the guide plates 38.

[0043] Two electric push rod bodies 31 are symmetrically arranged about the mounting base 22. The output end of the electric push rod body 31 is provided with a push rod, and the push rod is fixedly connected to the extension rod 32. Each first piston cylinder 34 is provided with a first movable hole that matches the piston rod 33, and each first piston cylinder 34 is provided with a first piston groove that matches the piston body 331.

[0044] The first piston cylinder 34 has a first air guide hole at one end, and the first air guide hole is connected to the air inlet through the first air guide pipe 35. The guide plate 38 has two pairs of guide grooves that match the two pairs of sliders 37.

[0045] The water-washing adhesive assembly 4 includes two second piston cylinders 41 fixed on the mounting base 22, and each second piston cylinder 41 is located on one side of the first piston cylinder 34. The piston rod 33 is slidably connected to the second piston cylinder 41, and the piston body 331 near the second piston cylinder 41 is slidably connected to the inner wall of the second piston cylinder 41. A limiting seat is fixedly provided on each side of the mounting shell 26, and a bearing seat 44 is rotatably provided on each of the two limiting seats. An adhesive airbag roller 43 is fixedly provided between the two bearing seats 44. Each limiting seat is provided with an air passage hole that communicates with the adhesive airbag roller 43. A second air guide hole is provided on the second piston cylinder 41, and a second air guide pipe 42 is fixedly provided between the second air guide hole and the air passage hole.

[0046] Each second piston cylinder 41 is provided with a second movable hole that matches the piston rod 33, and each first piston cylinder 34 is provided with a second piston groove that matches the piston body 331.

[0047] Two limit seats are symmetrically arranged about the mounting housing 26, and two second piston cylinders 41 are symmetrically arranged about the mounting seat 22;

[0048] The dust-adhesive airbag roller 43 is hollow inside, and both bearing seats 44 are annular. The dust-adhesive airbag roller 43 is coated with water-washable adhesive.

[0049] When it is necessary to detect the curvature of the steel pipe body 15, the two hydraulic rods 11 can be activated to install the steel pipe body 15 between the two conical limit blocks 12, and the detection ring 21 can be sleeved on the outside of the steel pipe body 15. At this time, multiple measuring slides 23 can be made to press the rollers 24 against the arc-shaped outer wall of the steel pipe body 15 under the elastic force of the return spring 231. Then, by activating the motor body 141, the threaded rod 14 can be rotated around the connection position with the detection frame 1 under the connection of the rotating shaft, and the threaded rod 14 can be used to detect the curvature of the steel pipe body 15. With the threaded connection of the measuring seat 13, the measuring seat 13 can slide on the measuring frame 1. Simultaneously, as the curvature of the steel pipe body 15 changes, multiple distance measuring slides 23 can slide inside the mounting base 22. This change can be recorded with the cooperation of the laser rangefinder 25 and the laser reflector 251. During the sliding of the measuring seat 13, the dust-adhesive airbag roller 43 is in an expanded state and adheres to the arc-shaped outer wall of the steel pipe body 15. The water-washable adhesive on the dust-adhesive airbag roller 43 can adhere to dust and other impurities on the surface of the steel pipe body 15. The dust collection system allows the dust-collecting airbag roller 43 to rotate around the connection point between the bearing seat 44 and the limit seat, thus collecting dust and preventing errors in laser ranging caused by dust adhesion. After laser ranging is completed, the electric push rod body 31 can be activated to drive the piston rod 33, which is fixedly connected to the extension rod 32, to slide between the second piston cylinder 41 and the first piston cylinder 34. At this time, the piston body 331 inside the second piston cylinder 41 can extract air from inside the dust-collecting airbag roller 43 under the connection of the second air guide pipe 42. Meanwhile, the piston body 331 located inside the first piston cylinder 34 can inflate the two air bags 36 under the connection of the first air guide pipe 35. At the same time, as the air bags 36 continue to expand, the two sliders 37 fixed on the air bags 36 can slide inside the two guide grooves opened on the guide plate 38, and finally wrap the roller 24, which plays a protective role for the roller 24 and avoids the aging and corrosion caused by the roller 24 being in the external environment for a long time, so as to avoid the problem of laser ranging deviation.

[0050] The working principle and usage process of this invention are as follows: First, by activating two hydraulic rods 11, the steel pipe body 15 is installed between two conical limiting blocks 12, and the detection ring 21 is sleeved on the outside of the steel pipe body 15. At this time, multiple ranging slides 23, under the elastic force of the return spring 231, make the roller 24 tightly adhere to the arc-shaped outer wall of the steel pipe body 15. Then, by activating the motor body 141, the threaded rod 14 rotates around the connection position with the detection frame 1 under the connection of the rotating shaft. At this time, under the threaded connection between the threaded rod 14 and the detection seat 13, the detection seat 13 can slide on the detection frame 1. At the same time, as the curvature of the steel pipe body 15 changes, multiple ranging slides 23 can slide inside the mounting base 22. At this time, the change can be recorded with the cooperation of the laser rangefinder 25 and the laser reflector 251. During the sliding of the detection seat 13, the dust-adhesive airbag roller 43 is in expansion and close to the steel pipe body. The arc-shaped outer wall of the steel pipe body 15 is in a close fit, and the water-washable adhesive on the dust-adhesive airbag roller 43 can adhere and collect dust and other impurities on the surface of the steel pipe body 15. At the same time, the dust-adhesive airbag roller 43 can rotate around the connection position between the bearing seat 44 and the limit seat. After the laser ranging is completed, the electric push rod body 31 can be activated to drive the piston rod 33, which is fixedly connected to the extension rod 32, to slide between the second piston cylinder 41 and the first piston cylinder 34. At this time, the piston body 331 inside the second piston cylinder 41 can extract the air inside the dust-adhesive airbag roller 43 under the connection of the second air guide pipe 42. At the same time, the piston body 331 inside the first piston cylinder 34 can inflate the two airbags 36 under the connection of the first air guide pipe 35. Meanwhile, as the airbags 36 continue to expand, the two sliders 37 fixed on the airbags 36 can slide inside the two guide grooves opened on the guide plate 38, and finally wrap the roller 24.

[0051] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A laser measuring device for detecting the curvature of steel structures, comprising a testing frame (1) for mounting a steel pipe body (15), characterized in that: A hydraulic rod (11) is installed on each side of the testing frame (1). A conical limiting block (12) is fixedly provided at the output end of each hydraulic rod (11). The steel pipe body (15) is located between the two conical limiting blocks (12). A motor body (141) is installed on the testing frame (1). A threaded rod (14) is connected to the output end of the motor body (141) through a rotating shaft. A testing seat (13) is slidably provided on the testing frame (1). The testing seat (13) is connected to the threaded rod (14) through a thread. A laser testing component (2) is provided on the testing seat (13). The laser detection assembly (2) includes a detection ring (21) fixed on a detection base (13). Multiple mounting bases (22) are fixedly provided on the detection ring (21). A distance measuring slide (23) is slidably provided on each mounting base (22). A roller (24) is rotatably provided on the bottom of the distance measuring slide (23). Two return springs (231) are fixedly provided between the mounting base (22) and the distance measuring slide (23). A laser rangefinder (25) is installed on the top of the mounting base (22). A laser reflector (251) is fixedly provided on the top of the distance measuring slide (23), and the output end of the laser rangefinder (25) is located above the laser reflector (251). A mounting shell (26) is fixedly provided on the bottom of the distance measuring slide (23). Each of the mounting bases (22) is provided with a dustproof transmission assembly (3) and each of the mounting bases (22) is provided with a water-washable dust-adhesive assembly (4). The dustproof transmission assembly (3) includes two electric push rod bodies (31) installed on both sides of the mounting base (22). Each electric push rod body (31) has an extension rod (32) fixedly installed at its output end. A piston rod (33) is fixedly installed at the bottom end of the extension rod (32). Two first piston cylinders (34) are fixedly installed on the mounting base (22). A piston body (331) is fixedly installed at each end of the piston rod (33). The piston body (331) closer to the first piston cylinder (34) is connected to the first piston cylinder (34). 4) Inner wall sliding connection, two inflatable airbags (36) are fixedly installed inside the mounting shell (26), and each inflatable airbag (36) is hollow inside. Each inflatable airbag (36) is provided with two air inlets, and each air inlet is provided with a first air guide pipe (35) between it and the first piston cylinder (34). Each inflatable airbag (36) is fixedly provided with two sliders (37), and two guide plates (38) are fixedly installed on the inner wall of the mounting shell (26). The two sliders (37) are slidably connected to the guide plates (38).

2. The laser measuring device for detecting the curvature of steel structures according to claim 1, characterized in that: The testing frame (1) is fixedly provided with a motor mounting base, and the motor body (141) is installed on the motor mounting base. One end of the threaded rod (14) is rotatably connected to the testing frame (1). The testing ring (21) is provided with a threaded groove that matches the threaded rod (14). The threaded rod (14) is located below the steel pipe body (15).

3. The laser measuring device for detecting the curvature of steel structures according to claim 1, characterized in that: Multiple mounting seats (22) are arranged in a ring array on the detection ring (21). Each mounting seat (22) has a lifting and lowering groove that matches the ranging slide (23). The mounting seat (22) also has a spring mounting groove that matches the two return springs (231).

4. The laser measuring device for detecting the curvature of steel structures according to claim 1, characterized in that: The two electric push rod bodies (31) are symmetrically arranged about the mounting base (22). The output end of the electric push rod body (31) is provided with a push rod, and the push rod is fixedly connected to the extension rod (32). Each first piston cylinder (34) is provided with a first movable hole that matches the piston rod (33). Each first piston cylinder (34) is provided with a first piston groove that matches the piston body (331).

5. The laser measuring device for detecting the curvature of steel structures according to claim 1, characterized in that: The first piston cylinder (34) has a first air guide hole at one end, and the first air guide hole is connected to the air inlet through a first air guide pipe (35). The guide plate (38) has two pairs of guide grooves that match the two pairs of sliders (37).

6. The laser measuring device for detecting the curvature of steel structures according to claim 1, characterized in that: The water-washing adhesive assembly (4) includes two second piston cylinders (41) fixed on the mounting base (22), and each second piston cylinder (41) is located on one side of the first piston cylinder (34). The piston rod (33) is slidably connected to the second piston cylinder (41), and the piston body (331) near the second piston cylinder (41) is slidably connected to the inner wall of the second piston cylinder (41). A limiting seat is fixedly provided on both sides of the mounting shell (26), and a bearing seat (44) is rotatably provided on each of the two limiting seats. An adhesive airbag roller (43) is fixedly provided between the two bearing seats (44). Each limiting seat is provided with an air passage hole that communicates with the adhesive airbag roller (43). A second air guide hole is provided on the second piston cylinder (41), and a second air guide pipe (42) is fixedly provided between the second air guide hole and the air passage hole.

7. The laser measuring device for detecting the curvature of steel structures according to claim 6, characterized in that: Each second piston cylinder (41) is provided with a second movable hole that matches the piston rod (33), and each first piston cylinder (34) is provided with a second piston groove that matches the piston body (331).

8. The laser measuring device for detecting the curvature of steel structures according to claim 6, characterized in that: The two limiting seats are symmetrically arranged about the mounting shell (26), and the two second piston cylinders (41) are symmetrically arranged about the mounting seat (22).

9. A laser measuring device for detecting the curvature of steel structures according to claim 6, characterized in that: The dust-adhesive airbag roller (43) is hollow inside, and both bearing seats (44) are annular.

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