Measuring device for intelligently detecting flatness for highway and bridge construction

Abstract

The invention discloses an intelligent flatness detection measuring device for highway and bridge construction, and belongs to the technical field of laser measurement, the intelligent flatness detection measuring device comprises a first laser range finder, the first laser range finder comprises a laser emitter, a laser receiver and a data processing module, the laser emitter and the laser receiver are both in signal connection with a data processing system, and the data processing module is in signal connection with the data processing system. Lifting adjusting rods are installed at the two ends of the supporting frame, a moving mechanism is movably arranged on the supporting frame and comprises a sliding block, a driving wheel and a driven wheel, a motor is connected to the upper end of the driving wheel, and the driving wheel and the driven wheel are arranged on the two sides of the sliding block respectively and are in rolling connection with the two sides of the supporting frame respectively; the lower surface of the sliding block is rotationally connected with a rotating disc, the laser transmitter and the laser receiver are both installed on the lower surface of the rotating disc, and the first laser range finder and the rotating disc are coaxially arranged. According to the invention, the looseness of the first laser range finder can be detected technically, so that the measurement accuracy is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of laser measurement, and in particular relates to a measuring device for intelligently detecting flatness for highway and bridge construction. Background Art

[0002] The laser road surface roughness measuring device is mainly composed of a laser transmitter, a laser receiver, a data processing system, etc. It monitors the road surface roughness in real time by emitting laser beams and receiving reflected signals, providing accurate data support for road maintenance and construction. When roads and bridges are built, their surfaces are irregular or rough, and a laser road surface roughness measuring device is needed to measure the roughness and irregularity of the surface.

[0003] In the prior art, the laser rangefinder can move along the track and measure the flatness of the ground by collecting the distance between the track and the ground in real time. However, after long-term use, the installation firmness of the laser rangefinder will decrease. When it moves along the track for measurement, even if the slight shaking it produces is difficult for the human eye to detect, this shaking will cause the laser that originally irradiated the ground vertically downward to irradiate in different directions. In this way, during the entire measurement process, the random changes in the laser irradiation angle will increase the volatility of the measurement results. Since this fluctuation is irregular, the system can easily misjudge it as caused by uneven ground, which in turn reduces the accuracy of the detection results. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides an intelligent flatness measuring device for highway and bridge construction, which has the advantages of automatically moving and adjusting the position and height of the ruler, improving the work efficiency of multi-point measurement, and reducing the burden of manual measurement. It solves the problem that the existing highway flatness measurement requires manual multiple movement of the ruler for point-by-point measurement, which consumes a lot of manpower and time and has low measurement efficiency.

[0005] The present invention is implemented as follows: a measuring device for intelligently detecting flatness for highway and bridge construction comprises a first laser rangefinder, wherein the first laser rangefinder comprises a laser transmitter, a laser receiver and a data processing module, wherein the laser transmitter and the laser receiver are both connected to the data processing system by signal, and further comprises a support frame, wherein both ends of the support frame are provided with lifting adjustment rods, a moving mechanism is movably provided on the support frame, and the moving mechanism comprises a slider, a driving wheel and a driven wheel, wherein the upper end of the driving wheel is connected with a motor, the driving wheel and the driven wheel are respectively provided at both sides of the slider, and are respectively connected to both sides of the support frame in a rolling manner; a turntable is rotatably connected to the lower surface of the slider, the laser transmitter and the laser receiver are both installed on the lower surface of the turntable, and the first laser rangefinder and the turntable are coaxially provided.

[0006] Preferably, a guiding groove is formed at the upper end of the supporting frame, and limiting grooves are formed on both sides. A limiting ring is rotatably sleeved in the middle of each of the driving wheel and the driven wheel. The limiting rings are movably arranged in the limiting grooves, and the outer peripheral surface of the turntable is attached to the outer peripheral surface of one of the limiting rings.

[0007] Preferably, a plurality of first convex teeth are annularly arranged on the outer peripheral surface of the limiting ring, and a plurality of second convex teeth are annularly arranged on the outer peripheral surface of the turntable. The second convex teeth are meshed with the first convex teeth. Through this arrangement, the linear velocities of the limiting ring and the turntable can be made the same.

[0008] Preferably, the slider is slidably connected in the guiding groove. A bidirectional lead screw and a slide bar are respectively penetrated through both sides of the slider. The slide bar is fixedly connected with the slider, and the bidirectional lead screw is rotatably connected with the slider.

[0009] Preferably, mounting brackets are slidably connected to both ends of the slide bar, and the sides of the mounting brackets away from the slide bar are threadedly connected to the bidirectional lead screw.

[0010] Preferably, mounting blocks are fixedly connected to the lower surfaces of the two mounting brackets. A plurality of balls are circumferentially arranged on the upper surface of the mounting blocks, and the balls are in rolling connection with the upper surface of the supporting frame.

[0011] Preferably, the upper ends of the driving wheel and the driven wheel are respectively rotatably connected to the two mounting blocks.

[0012] Preferably, a second laser rangefinder is fixedly installed on one end of the lifting adjustment rod. A lifting rod is movably arranged at the bottom of the slider, and the laser of the second laser rangefinder irradiates on the lifting rod.

[0013] Preferably, a sleeve is fixedly connected to the lower surface of the slider, and a spring is fixedly installed inside the sleeve; the bottom of the spring is fixedly connected to the top end of the lifting rod, and the lifting rod is slidably sleeved in the sleeve; on the lifting rod, a caster is installed at the bottom of the lifting rod.

[0014] Preferably, a locking screw is provided on the sleeve, and a slot is provided on the lifting rod. The locking screw can be screwed into the slot, and when the locking screw is screwed into the slot, the caster does not contact the ground; when the caster contacts the ground, a wedge-shaped notch is formed in the lifting rod, and the laser of the second laser rangefinder irradiates into the wedge-shaped notch.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the unique turntable structure design, the measurement error problem caused by the loosening or tilting of the first laser rangefinder after long-term use is effectively solved. It can accurately distinguish whether the measurement data fluctuation is due to the instrument itself or the true flatness of the ground, greatly improving the accuracy of the measurement results, making the detection data more reliable, and providing a solid data basis for the quality assessment of highway and bridge construction.

[0016] 2. The overall device structure is ingeniously designed. The combination of the support frame and the lifting adjustment rod facilitates height adjustment. The slider, driving wheel, and driven wheel in the moving mechanism work together to ensure the stable linear movement of the first laser rangefinder. The connection method between the turntable and the laser emitter and laser receiver specifically solves the problem of instrument shaking. Each component cooperates with each other, making the device have good operability and stability.

[0017] 3. The setting of the lifting adjustment rod enables the measuring device to adapt to the measurement requirements of highway and bridge pavements at different heights. Whether it is on a relatively high bridge pavement or a relatively low ordinary highway pavement, accurate measurement can be achieved through simple adjustment operations, greatly improving the versatility and application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structure schematic diagram of the whole of the present invention from the first perspective; Figure 2 For the present invention Figure 1 is an enlarged view of the structure at A in Figure 3 is a three-dimensional structure schematic diagram of the whole of the present invention from the second perspective; Figure 4 For the present invention Figure 3 is an enlarged view of the structure at B in Figure 5 is a front view structure schematic diagram of the whole of the present invention; Figure 6 For the present invention Figure 5 is a schematic diagram of the C-C cross-sectional structure in

[0019] In the figure: 1. Support frame; 11. Guide groove; 12. Limit groove; 2. Moving mechanism; 21. Slider; 22. Bidirectional lead screw; 23. Slide bar; 24. Mounting block; 241. Ball; 25. Driving wheel; 26. Limit ring; 27. Mounting frame; 28. Motor; 29. Driven wheel; 3. Lifting rod; 31. Caster wheel; 32. Spring; 33. Sleeve; 34. Locking screw; 35. Wedge-shaped notch; 4. Lifting adjustment rod; 5. Second laser rangefinder; 6. First laser rangefinder; 7. Turntable. DETAILED DESCRIPTION OF THE INVENTION

[0020] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0021] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 6 As shown, an embodiment of the present invention provides an intelligent flatness measuring device for highway and bridge construction, comprising a first laser rangefinder 6, wherein the first laser rangefinder 6 comprises a laser transmitter, a laser receiver and a data processing module, wherein the laser transmitter and the laser receiver are both connected to the data processing system by signal, and further comprises a support frame 1, wherein both ends of the support frame 1 are provided with lifting adjustment rods 4, wherein a moving mechanism 2 is movably arranged on the support frame 1, wherein the moving mechanism 2 comprises a slider 21, a driving wheel 25 and a driven wheel 29, wherein the upper end of the driving wheel 25 is connected with a motor 28, wherein the driving wheel 25 and the driven wheel 29 are respectively arranged on both sides of the slider 21, and are respectively connected to both sides of the support frame 1 in a rolling manner; a turntable 7 is rotatably connected to the lower surface of the slider 21, wherein the laser transmitter and the laser receiver are both installed on the lower surface of the turntable 7, and the first laser rangefinder 6 and the turntable 7 are coaxially arranged.

[0023] In the measuring device, firstly, the height position of the whole device can be flexibly adjusted according to the actual measurement requirements through the lifting and adjusting rods 4 at both ends of the support frame 1, so that it can adapt to different measurement scenes and the height range of the measured object, and the support frame 1 can be leveled. When the device starts working, the motor 28 drives the driving wheel 25 to rotate. Since the driving wheel 25 and the driven wheel 29 are respectively located on both sides of the slider 21 and are rollingly connected to the support frame 1, the slider 21 can move stably along the support frame 1 under the drive of the driving wheel 25. The turntable 7 installed on the lower surface of the slider 21 and rotatably connected thereto, as well as the laser transmitter and laser receiver fixed on the lower surface of the turntable 7, move with the slider 21 to achieve measurement of different positions on the ground of roads and bridges.

[0024] When the laser transmitter becomes loose or tilted due to long-term use, since it is coaxially arranged with the turntable 7 and installed on the lower surface of the turntable 7, the turntable 7 will drive the laser transmitter and the laser receiver to rotate. Here, the turntable 7 drives them to produce periodic fluctuations, which are essentially different from the irregular fluctuations caused by uneven ground. When the data processing module processes the measurement data formed by the laser transmitter emitting laser light and the laser receiver receiving the reflected light, it can quickly identify the shaking of the laser transmitter itself rather than the actual flatness change of the ground based on the periodic characteristics of the fluctuation, thereby avoiding inaccurate measurements caused by misjudgment. After detecting this situation, an alarm can be sounded through an alarm so that timely maintenance can be carried out.

[0025] By making the following settings, the following beneficial effects are achieved: Improve measurement accuracy: Through the unique design of the turntable 7 structure, the problem of measurement errors caused by the loosening or tilting of the first laser rangefinder 6 after long-term use is effectively solved. It can accurately distinguish whether the fluctuation of the measurement data is due to the instrument itself or the actual flatness of the ground, greatly improving the accuracy of the measurement results, making the detection data more reliable, and providing a solid data basis for the quality assessment of highway and bridge construction.

[0026] Reasonable structural design: The overall device has a clever structural design. The combination of the support frame 1 and the lifting adjustment rod 4 facilitates height adjustment. The slider 21, the driving wheel 25, and the driven wheel 29 in the moving mechanism 2 work together to ensure the stable linear movement of the first laser rangefinder 6. The connection method of the turntable 7 with the laser emitter and the laser receiver specifically solves the problem of instrument shaking. Each component cooperates with each other, making the device have good operability and stability.

[0027] Adapt to various working conditions: The setting of the lifting adjustment rod 4 enables the measuring device to meet the measurement requirements of highway and bridge road surfaces at different heights. Whether it is on a relatively high bridge road surface or a relatively low ordinary highway road surface, accurate measurement can be achieved through simple adjustment operations, greatly improving the versatility and application range of the device.

[0028] In specific implementation, the motor 28 can be externally powered, or a mobile power source can be installed on the slider 21 to supply power to the motor 28 to ensure the power supply of the motor 28 during the movement. A level is installed on the support frame 1, and the two ends of the lifting adjustment rod 4 will level the support frame 1 according to the level. The support frame 1 straddles the highway, and the casters 31 roll along the highway surface. It should be noted that the first laser rangefinder 6 also includes a power supply module for supplying power to the laser emitter, the laser receiver, and the data processing module, which will not be elaborated here.

[0029] Furthermore, a guide groove 11 is opened at the upper end of the support frame 1, and limit grooves 12 are opened on both sides. A limit ring 26 is rotatably sleeved in the middle of the driving wheel 25 and the driven wheel 29. The limit ring 26 is movably arranged in the limit groove 12, and the outer peripheral surface of the turntable 7 is attached to the outer peripheral surface of one of the limit rings 26.

[0030] In this measuring device, the guiding groove 11 at the upper end of the support frame 1 provides an accurate guiding path for the movement of the slider 21, ensuring that the slider 21 can slide stably on the support frame 1 along the preset direction. The limiting grooves 12 on both sides cooperate with the limiting rings 26 in the middle of the driving wheel 25 and the driven wheel 29. When the motor 28 drives the driving wheel 25 to rotate, the driving wheel 25 drives the slider 21 to move by relying on the rolling friction force with the support frame 1. At the same time, due to the limiting effect of the limiting ring 26 in the limiting groove 12, the rotation of the driving wheel 25 and the driven wheel 29 is smoother and along the direction of the limiting groove 12, effectively avoiding the deviation or shaking of the wheels during rotation, thus ensuring the stability of the operation of the entire moving mechanism 2.

[0031] For the turntable 7, its outer peripheral surface is attached to the outer peripheral surface of one of the limiting rings 26. When the driving wheel 25 rotates, the turntable 7 can rotate accordingly through the drive of the limiting ring 26. And due to the coaxial connection relationship between the turntable 7, the laser emitter, and the laser receiver, when the laser emitter shakes due to loose installation or inclination, this shaking will be converted into a periodic rotational fluctuation of the turntable 7 driving the laser emitter and the laser receiver. After receiving the measurement data of the first laser rangefinder 6, the data processing module analyzes the fluctuation characteristics in the data. If it finds that it is a periodic fluctuation, it can judge that it is caused by the rotation of the turntable 7, and then determine that it is a problem with the laser emitter itself, rather than the change in the ground flatness, so as to achieve accurate judgment. If an abnormality is detected, the alarm can be triggered to alarm for timely maintenance.

[0032] Through the above settings, the following beneficial effects are achieved: 1. The design of the guiding groove 11, the limiting groove 12, and the limiting ring 26 significantly enhances the operation stability of the entire device. Under the constraint of the limiting groove 12 and the limiting ring 26, the driving wheel 25 and the driven wheel 29 rotate more smoothly and with accurate trajectories, so that the slider 21 will not deviate or shake during the movement process, ensuring that the laser emitter and the laser receiver always maintain a stable operation state during the measurement process, effectively reducing the measurement errors that may be introduced due to the instability of the moving mechanism 2, and further improving the accuracy and reliability of the measurement.

[0033] 2. By using the method of driving the turntable 7 to rotate by the limiting ring 26 when the driving wheel 25 rotates, there is no need to set a separate driving device for the turntable 7, which simplifies the structural complexity of the device, reduces the cost and energy consumption. At the same time, this integrated driving design makes the rotation of the turntable 7 closely related to the operation of the moving mechanism 2, ensuring that when the laser emitter shakes, the turntable 7 can timely and accurately convert this shaking into an identifiable periodic fluctuation signal, improving the timeliness and accuracy of detecting the abnormal situation of the laser emitter, and helping to improve the intelligent detection performance of the entire device.

[0034] Further, a plurality of first convex teeth are annularly arranged on the outer peripheral surface of the limit ring 26, and a plurality of second convex teeth are annularly arranged on the outer peripheral surface of the turntable 7. The second convex teeth are engaged with the first convex teeth. Through this setting, the linear speeds of the limit ring 26 and the turntable 7 can be made the same. The slider 21 is slidably connected in the guide groove 11. A bidirectional lead screw 22 and a slide rod 23 are respectively penetrated through both sides of the slider 21. The slide rod 23 is fixedly connected with the slider 21, and the bidirectional lead screw 22 is rotatably connected with the slider 21. Both ends of the slide rod 23 are slidably connected with mounting brackets 27, and one side of the mounting bracket 27 away from the slide rod 23 is threadedly connected to the bidirectional lead screw 22. A plurality of mounting blocks 24 are fixedly connected to the lower surfaces of the two mounting brackets 27. A plurality of balls 241 are circumferentially arranged on the upper surface of the mounting block 24, and the balls 241 are in rolling connection with the upper surface of the support frame 1. The upper ends of the driving wheel 25 and the driven wheel 29 are respectively rotatably connected to the two mounting blocks 24.

[0035] Through the above settings, when the bidirectional lead screw 22 is adjusted to make the driving wheel 25 and the driven wheel 29 abut against both sides of the support frame 1, during movement, the driving wheel 25 is driven to rotate by the motor 28, so that the entire moving mechanism 2 moves along the support frame 1, and the driven wheel 29 rotates synchronously to ensure the horizontality of the moving mechanism 2.

[0036] By providing the threaded fit between the bidirectional lead screw 22 and the mounting bracket 27, on the one hand, it is convenient to adjust the force of the driving wheel 25 and the driven wheel 29 pressing against the support frame 1, avoiding loosening or over-tightening from affecting the movement. On the other hand, it is convenient to disassemble and replace the driving wheel 25 and the driven wheel 29. During operation, the bidirectional lead screw 22 is rotated in the corresponding direction, and the bidirectional lead screw 22 drives the two mounting brackets 27 on both sides to move simultaneously in the direction of approaching or separating from each other. When moving closer, the pressing force becomes larger; when moving away, the pressing force becomes smaller. When continuously moving away, the limit ring 26 is removed from the limit groove 12, and the mounting block 24 is separated from the support frame 1, so that the driving wheel 25 and the driven wheel 29 can be disassembled from the mounting block 24, making subsequent maintenance more convenient.

[0037] By providing the limit ring 26 and inserting it into the limit groove 12, the driving wheel 25 and the driven wheel 29 can be limited and supported, avoiding the driving wheel 25 and the driven wheel 29 not being closely attached to the support frame 1 due to the inclination of both ends of the lead screw and the slide rod 23, ensuring the degree of fit between the driving wheel 25 and the driven wheel 29 and the support frame 1 and the stability during the movement process. By providing the balls 241, friction between the mounting block 24 and the support frame 1 can be avoided, extending the service life of the corresponding components.

[0038] Further, a second laser rangefinder 5 is fixedly installed on one end of the lifting and adjusting rod 4. A lifting rod 3 is movably arranged at the bottom of the slider 21, and the laser of the second laser rangefinder 5 irradiates on the lifting rod 3. Considering that it is not accurate to judge the position of the slider 21 by the rotation speeds of the driving wheel 25 and the driven wheel 29, because the driving wheel 25 and the driven wheel 29 will have a certain amount of sliding friction with the support frame 1, it is difficult to determine the position of the measurement point. With this setting, the second laser rangefinder 5 can measure the position of the lifting rod 3, so as to determine the position of the slider 21.

[0039] Further, a sleeve 33 is fixedly connected to the lower surface of the slider 21. A spring 32 is fixedly installed inside the sleeve 33; the bottom of the spring 32 is fixedly connected to the top of the lifting rod 3, and the lifting rod 3 is slidably sleeved inside the sleeve 33; on the lifting rod 3, a caster 31 is installed at the bottom of the lifting rod 3; Further, a locking screw 34 is provided on the sleeve 33, a slot is provided on the lifting rod 3, and the locking screw 34 can be screwed into the slot. When the locking screw 34 is screwed into the slot, the caster 31 does not contact the ground; when the caster 31 contacts the ground, a wedge-shaped notch 35 is formed on the lifting rod 3, and the laser of the second laser rangefinder 5 irradiates into the wedge-shaped notch 35. During use, the spring 32 is compressed inside the sleeve 33, so that the bottom caster 31 presses against the road surface. During the measurement process, the slider 21 moves along the guide groove 11, driving the sleeve 33 and the lifting rod 3 to move synchronously. When the road surface condition changes, the lifting rod 3 moves up or down correspondingly, and the spring 32 contracts or extends correspondingly, so that automatic adjustment can be realized during the movement process.

[0040] With this setting, if the first laser rangefinder 6 is damaged, the caster 31 is made to contact the ground, and the laser of the second laser rangefinder 5 irradiates into the wedge-shaped notch 35. If the ground is flat, the detection value of the second laser rangefinder 5 corresponds one-to-one with the horizontal moving distance of the lifting rod 3; if the ground is uneven, during the rolling process of the caster 31, the wedge-shaped notch 35 will move up and down, so that the laser emitted by the second laser rangefinder 5 can irradiate different positions on the inclined surface of the wedge-shaped notch 35, thus generating fluctuations in the value. With this setting, the flatness can be detected.

[0041] The working principle of the present invention: In this measuring device, first, through the lifting adjustment rods 4 at both ends of the support frame 1, the height position of the entire device can be flexibly adjusted according to actual measurement requirements, so as to adapt to different measurement scenarios and the height range of the object to be measured, and the support frame 1 is leveled. When the device starts to work, the motor 28 drives the driving wheel 25 to rotate. Since the driving wheel 25 and the driven wheel 29 are respectively located on both sides of the slider 21 and are in rolling connection with the support frame 1, the slider 21 can move stably along the support frame 1 under the drive of the driving wheel 25. The turntable 7 installed on the lower surface of the slider 21 and rotatably connected thereto, as well as the laser emitter and the laser receiver fixed on the lower surface of the turntable 7, move together with the slider 21 to realize the measurement of different positions on the ground of roads and bridges.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent flatness measurement device for highway and bridge construction, comprising a first laser rangefinder (6). The first laser rangefinder (6) includes a laser emitter, a laser receiver and a data processing module. Both the laser emitter and the laser receiver are signal-connected to a data processing system. It is characterized in that: It further includes a support frame (1), both ends of the support frame (1) are installed with lifting and adjusting rods (4), a moving mechanism (2) is movably arranged on the support frame (1), the moving mechanism (2) includes a slider (21), a driving wheel (25) and a driven wheel (29), the upper end of the driving wheel (25) is connected with a motor (28), the driving wheel (25) and the driven wheel (29) are respectively arranged on both sides of the slider (21) and are respectively in rolling connection with both sides of the support frame (1); The lower surface of the slider (21) is rotatably connected with a turntable (7), both the laser emitter and the laser receiver are installed on the lower surface of the turntable (7), and the first laser rangefinder (6) and the turntable (7) are coaxially arranged.

2. The measuring device for intelligently detecting the flatness during highway and bridge construction according to claim 1, wherein: The upper end of the support frame (1) is provided with a guide groove (11), and limiting grooves (12) are respectively provided on both sides. A limiting ring (26) is rotatably sleeved in the middle of both the driving wheel (25) and the driven wheel (29), the limiting ring (26) is movably arranged in the limiting groove (12), and the outer peripheral surface of the turntable (7) is attached to the outer peripheral surface of one of the limiting rings (26).

3. The measuring device for intelligently detecting the flatness during highway and bridge construction according to claim 2, wherein: A number of first convex teeth are annularly arranged on the outer peripheral surface of the limiting ring (26), a number of second convex teeth are annularly arranged on the outer peripheral surface of the turntable (7), and the second convex teeth and the first convex teeth are meshed.

4. The intelligent flatness measuring device for highway and bridge construction according to claim 2 or 3, characterized in that: The slider (21) is slidably connected in the guide groove (11), a bidirectional lead screw (22) and a slide rod (23) are respectively penetrated through both sides of the slider (21), the slide rod (23) is fixedly connected with the slider (21), and the bidirectional lead screw (22) is rotatably connected with the slider (21).

5. The measuring device for intelligently detecting the flatness in highway and bridge construction according to claim 4, characterized in that: Both ends of the slide rod (23) are slidably connected with mounting frames (27), and one side of the mounting frame (27) away from the slide rod (23) is threadedly connected to the bidirectional lead screw (22).

6. The intelligent flatness detection and measurement device for highway and bridge construction according to claim 5, wherein: Both lower surfaces of the two mounting frames (27) are fixedly connected with mounting blocks (24), a number of balls (241) are circumferentially arranged on the upper surface of the mounting block (24), and the balls (241) are in rolling connection with the upper surface of the support frame (1).

7. The intelligent flatness measurement device for highway and bridge construction according to claim 6, characterized in that: The upper ends of the driving wheel (25) and the driven wheel (29) are respectively rotatably connected to the two mounting blocks (24).

8. The measuring device for intelligently detecting the flatness during highway and bridge construction according to claim 1, wherein: A second laser rangefinder (5) is fixedly installed on one of the lifting and adjusting rods (4), a lifting rod (3) is movably arranged at the bottom of the slider (21), and the laser of the second laser rangefinder (5) irradiates on the lifting rod (3).

9. The measuring device for intelligently detecting the flatness in highway and bridge construction according to claim 8, wherein: The lower surface of the slider (21) is fixedly connected with a sleeve (33), a spring (32) is fixedly installed inside the sleeve (33); the bottom of the spring (32) is fixedly connected with the top end of the lifting rod (3), and the lifting rod (3) is slidably sleeved in the sleeve (33); On the lifting rod (3), a caster (31) is installed at the bottom of the lifting rod (3).

10. The intelligent flatness measurement device for highway and bridge construction according to claim 9, wherein: A locking screw (34) is provided on the sleeve (33), a slot is provided on the lifting rod (3), and the locking screw (34) can be screwed into the slot. When the locking screw (34) is screwed into the slot, the caster (31) does not contact the ground; When the caster (31) contacts the ground, a wedge-shaped notch (35) is formed on the lifting rod (3), and the laser of the second laser range finder (5) irradiates into the wedge-shaped notch (35).

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