Device for detecting flatness of bridge construction based on Internet of Things

Abstract

The invention discloses a flatness detection device for bridge construction based on the Internet of Things, and belongs to the technical field of bridge construction, the flatness detection device comprises two symmetrically arranged moving tables, the bottom of each moving table is provided with a plurality of universal wheels and vacuum chucks, and the top end of each moving table is coaxially and rotatably connected with a workbench; a locking pin is detachably connected between the workbench and the movable table. Two sets of guide frames of telescopic structures are arranged between the opposite ends of the workbench, sliding structures are arranged on the guide frames, a detection structure is arranged between the sliding structures, the detection structure comprises a supporting frame, the two ends of the supporting frame are connected with the corresponding sliding structures, and a plurality of vertically-downward first telescopic rods are arranged on the supporting frame. A supporting rod is coaxially connected to the end of the telescopic rod in a sliding mode, and an elastic supporting piece is arranged between the supporting rod and the end of the telescopic rod. The invention aims to solve the problem that the existing detection device is easy to deviate in the detection process and the detection result is easy to influence.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a device for detecting flatness of bridge construction based on the Internet of Things. Background Art

[0002] A bridge generally refers to a structure built across rivers, lakes, and seas to enable vehicles and pedestrians to pass smoothly. To adapt to the modern high-speed development of the transportation industry, bridges are also extended to refer to buildings that are built across mountain streams, poor geology, or to meet other transportation needs to make travel more convenient.

[0003] During the construction of a bridge, the flatness of the bridge deck is one of the quality requirements for the bridge. The existing bridge flatness detection device adopts a method of detecting while moving. However, in the above detection method, the detection device needs to keep moving in a certain direction. If it deviates during the movement, it is easy to cause missed detection or repeated detection, affecting the detection result. Summary of the invention

[0004] In view of this, the present invention discloses a device for detecting flatness of bridge construction based on the Internet of Things, which aims to solve the problem that the existing detection device is prone to deviation during the detection process, which easily affects the detection result.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A device for detecting flatness of bridge construction based on the Internet of Things, comprising two symmetrically arranged mobile platforms, the bottom of each of the mobile platforms is provided with a plurality of universal wheels and a vacuum suction cup, the top of each of the mobile platforms is coaxially rotatably connected to a workbench, and a locking pin is detachably connected between the workbench and the mobile platform; two groups of guide frames with telescopic structures are arranged between the opposite ends of the workbench, each of the guide frames is provided with a sliding structure, and a detection structure is arranged between the sliding structures, and the detection structure comprises a supporting frame connected with corresponding sliding structures at both ends, a plurality of first telescopic rods vertically downward are arranged on the supporting frame, the ends of the telescopic rods are coaxially slidably connected with support rods, an elastic supporting member is arranged between the support rod and the end of the telescopic rod, the ends of the support rods are provided with pressure sensors for detecting the size of the pressure on the ends of the support rods, a spraying device is arranged on one side of the support rod, and a controller connected with the pressure sensor and the spraying device is arranged on the supporting frame.

[0007] In this scheme, the vacuum suction cup on one of the moving platforms is adsorbed on the bridge deck, and then the other moving platform is moved. When the other moving platform moves to the desired position, the vacuum suction cup on the moving platform is adsorbed on the bridge deck. At this time, the guide frame expands with the movement of the moving platform, and the extension and contraction of the first telescopic rod is controlled. The support rod is close to the bridge deck under the action of the elastic support member, so that the end of the support rod is subjected to a certain pressure, and then the support frame is driven to move along the guide frame through the sliding structure, and the support frame drives the support rod to move synchronously through the first telescopic rod, and the controller is turned on; when the support rod contacts the concave and convex area of ​​the bridge deck, the pressure on the end of the support rod increases or decreases, and when the pressure sensor detects the pressure change, the corresponding spraying device is controlled by the controller to spray, so that the concave and convex area of ​​the bridge deck is indicated; in addition, after the horizontal and transverse detection, the adsorption of the vacuum suction cup at the bottom of one of the moving platforms is released, the locking pin on the other moving platform is removed and the corresponding workbench is rotated, so that the guide frame can be adjusted to the horizontal and longitudinal direction for horizontal and longitudinal detection.

[0008] This solution utilizes the guide frame of the telescopic structure between the mobile platforms to guide the mobile platforms and the support frame, thereby preventing the mobile platforms from shifting during the movement and detection processes, and can accurately control the direction of the detection process to improve the detection accuracy. In addition, through horizontal and vertical bidirectional detection, the horizontal spraying trajectory and the vertical spraying trajectory are intertwined, thereby displaying the edges of the concave and convex areas, which can further improve the detection accuracy.

[0009] Furthermore, the guide frame includes two mounting plates arranged on corresponding workbenches, a plurality of support plates are arranged between adjacent mounting plates in the same guide frame, both ends of the support plates are fixed with rotating shafts parallel to the support frame, two support shafts symmetrically distributed up and down are arranged between adjacent support plates, the support shafts are parallel to the rotating shafts, plate bodies are symmetrically hinged on both sides of the support shafts, and the ends of the plate bodies are detachably hinged to the corresponding support shafts; the width and thickness of the mounting plate and the support plate are the same, and the thickness of the plate body is half the thickness of the support plate; sliding grooves are provided on both side ends of the support plates, and adjustment blocks are slidable in the sliding grooves, and positioning pins are provided between the adjustment blocks and the sliding grooves, and two support rods are rotatably connected to the adjustment blocks, and the support rods are rotatably connected to the corresponding side walls of the plate bodies.

[0010] In this solution, the detection distance is confirmed, and the positioning pins on the corresponding adjustment blocks of the plate within the corresponding distance are removed. The guide frame of the corresponding distance can be pulled to unfold by moving the moving platform, and the rest of the guide frame remains in a folded state. In this solution, the support plate and the unfolded plate form a flat plane. Compared with the existing telescopic structure (such as a multi-stage telescopic rod), the height difference between the various parts can be reduced, and the shaking of the sliding structure during the sliding process can be avoided, which affects the detection accuracy of the detection structure; in addition, the support rod can play a certain supporting role on the plate to prevent the guide frame from bending downward.

[0011] Furthermore, an adjustment seat is fixed between adjacent mounting plates on the same workbench, a movable seat is arranged below the adjustment seat, and two second telescopic rods are ball-jointedly connected between the movable seat and the corresponding adjustment seat; two guide rails are arranged below the movable seat, one end of the guide rail is rotatably connected to the workbench, a support is slidably connected to the guide rail, and a vertically arranged connecting rod is rotatably connected between the top of the support and the movable seat; and latches are detachably connected between the guide rail and the workbench, and between the support and the corresponding guide rail.

[0012] In this solution, the orientation of the guide frame, that is, the detection direction, can be adjusted by rotating the guide rail and the sliding support. In addition, the four second telescopic rods are distributed in a rectangular shape. When the bridge deck is uneven, causing the moving platform to tilt, one of the second telescopic rods is used as a fulcrum and remains unchanged, and the second telescopic rod diagonal to the fulcrum is telescoped, and the other two second telescopic rods are telescoped in coordination, thereby adjusting the inclination angle of the two guide frames to keep the guide frames horizontal, thereby ensuring that the detection structure is horizontal during movement, thereby reducing detection errors and improving detection accuracy.

[0013] Furthermore, the sliding structure includes a cylinder slidably mounted on the mounting plate, and the two ends of the support frame are respectively fixedly connected to the corresponding side walls of the cylinder; rollers are arranged at the upper and lower ends of the inner wall of the cylinder, and a driving motor for driving the rollers to rotate is arranged on the inner wall of the cylinder; baffles are arranged on both sides of the upper and lower end surfaces of the mounting plate and the support plate, and a limit plate is arranged on the end surface of the plate body opposite to the baffle.

[0014] In this solution, baffles and limit plates are used to limit and guide the rollers, ensuring that the moving direction of the sliding structure is the same as that of the guide frame, thereby avoiding detection errors.

[0015] Furthermore, the spraying device includes a liquid storage tank, two liquid storage chambers are arranged in the liquid storage chamber, pigments of different colors are stored in the two liquid storage chambers, and through holes are arranged at the bottom of each liquid storage chamber; a closed groove is coaxially arranged in the middle of the through hole, a closed plate is slidably arranged in the closed groove, an installation cavity is opened on one side of the closed groove, a third telescopic rod electrically connected to the controller is arranged in the installation cavity, and the end of the third telescopic rod is connected and fixed to the corresponding sealing plate.

[0016] In this solution, when the support rod moves to the recessed area, the pressure sensor detects a decrease in pressure, and uses a controller to control the third telescopic rod in one of the installation cavities to drive the corresponding closing plate to move into the installation cavity, so that the paint flows down from the through hole to complete the spraying operation in the recessed area. When the pressure is restored, the controller controls the corresponding third telescopic rod to drive the corresponding closing plate to reset, truly blocking the paint from continuing to spray; when the support rod moves to the raised area, the pressure sensor detects an increase in pressure, and uses the controller to control the third telescopic rod in another installation cavity to drive the corresponding closing plate to move into the installation cavity, so that the paint flows down from the through hole to complete the spraying operation in the raised area. When the pressure is restored, the controller controls the corresponding third telescopic rod to drive the corresponding closing plate to reset, truly blocking the paint from continuing to spray; in addition, the greater the degree of depression and convexity of the bridge deck, the greater the pressure change detected by the pressure sensor, and then the controller controls the third telescopic rod to shrink more, so that the through hole is opened more widely, the more paint flows out, and the spraying marks are more obvious, so as to facilitate distinction.

[0017] Furthermore, rubber blocks are provided between the plate body and the end of the support plate.

[0018] Furthermore, the bottom of the movable platform is provided with bristles.

[0019] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0022] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0023] Figure 3 for Figure 1The enlarged schematic diagram of point B in the middle;

[0024] Figure 4 for Figure 1 The enlarged schematic diagram of the center C;

[0025] Figure 5 It is a longitudinal sectional view of the liquid storage tank in the embodiment of the present invention.

[0026] The markings in the accompanying drawings are as follows: moving platform 1, universal wheel 2, vacuum suction cup 3, workbench 4, support frame 5, first telescopic rod 6, support rod 7, mounting plate 8, support plate 9, rotating shaft 10, support shaft 11, plate body 12, adjustment block 13, support rod 14, fixed seat 15, moving seat 16, second telescopic rod 17, guide rail 18, support 19, connecting rod 20, cylinder 21, roller 22, driving motor 23, liquid storage tank 24, closing plate 25, third telescopic rod 26, baffle 27, limit plate 28, supporting elastic member 29. DETAILED DESCRIPTION

[0027] like Figures 1 to 5 As shown:

[0028] A device for detecting flatness of bridge construction based on the Internet of Things comprises two symmetrically arranged mobile platforms 1, the bottom of each of the mobile platforms 1 is provided with a plurality of universal wheels 2 and a vacuum suction cup 3, the top of each of the mobile platforms 1 is coaxially rotatably connected with a workbench 4, and a locking pin (conventional technical means, so not drawn in the figure) is detachably connected between the workbench 4 and the mobile platform 1; two sets of guide frames with telescopic structures are arranged between the opposite ends of the workbench 4, each of the guide frames is provided with a sliding structure, a detection structure is arranged between the sliding structures, and the detection structure comprises A support frame 5 having two ends connected to corresponding sliding structures, wherein the support frame 5 is provided with a plurality of first telescopic rods 6 pointing vertically downward, wherein the ends of the telescopic rods are coaxially slidably connected with support rods 7, wherein elastic support members are provided between the support rods 7 and the ends of the telescopic rods, and the ends of the support rods 7 are provided with pressure sensors (conventional technical means, so not drawn in the figure) for detecting the magnitude of the pressure applied to the ends of the support rods 7, a spraying device is provided on one side of the support rods 7, and a controller (conventional technical means, so not drawn in the figure) connected with the pressure sensor and the spraying device is provided on the support frame 5.

[0029] In this scheme, the vacuum suction cup 3 on one of the moving platforms 1 is adsorbed on the bridge deck, and then the other moving platform 1 is moved. When the other moving platform 1 moves to the desired position, the vacuum suction cup 3 on the moving platform 1 is adsorbed on the bridge deck; at this time, the guide frame expands with the movement of the moving platform 1, and the extension and contraction of the first telescopic rod 6 is controlled, and the support rod 7 is close to the bridge deck under the action of the elastic support member, so that the end of the support rod 7 is subjected to a certain pressure, and then the support frame 5 is driven to move along the guide frame through the sliding structure, and the support frame 5 drives the support rod 7 to move synchronously through the first telescopic rod 6, and the controller is turned on; when the support rod 7 contacts the concave and convex area of ​​the bridge deck, the pressure on the end of the support rod 7 increases or decreases, and when the pressure sensor detects the pressure change, the corresponding spraying device is controlled by the controller to spray, and the concave and convex area of ​​the bridge deck is indicated; in addition, after the horizontal and transverse detection, the adsorption of the vacuum suction cup 3 at the bottom of one of the moving platforms 1 is released, the locking pin on the other moving platform 1 is removed and the corresponding workbench 4 is rotated, and the guide frame can be adjusted to the horizontal and longitudinal direction for horizontal and longitudinal detection.

[0030] This solution utilizes the guide frame of the telescopic structure between the mobile platform 1 to guide the mobile platform 1 and the support frame 5, thereby preventing the mobile platform 1 from deviating during the movement and detection processes, and can accurately control the direction of the detection process to improve the detection accuracy; in addition, through horizontal transverse and horizontal longitudinal bidirectional detection, the transverse spraying trajectory and the longitudinal spraying trajectory are intertwined, thereby displaying the edges of the concave and convex areas, which can further improve the detection accuracy.

[0031] In this embodiment, the guide frame includes two mounting plates 8 arranged on the corresponding workbench 4, and a plurality of support plates 9 are arranged between adjacent mounting plates 8 in the same guide frame. Both ends of the support plates 9 are fixed with rotating shafts 10 parallel to the support frame 5, and two support shafts 11 symmetrically distributed up and down are arranged between adjacent support plates 9, the support shafts 11 are parallel to the rotating shafts 10, and plate bodies 12 are symmetrically hinged on both sides of the support shafts 11, and the ends of the plate bodies 12 are detachably hinged to the corresponding support shafts 11; the width and thickness of the mounting plates 8 and the support plates 9 are the same, and the thickness of the plate body 12 is half the thickness of the support plates 9; slide grooves are provided on both side ends of the support plates 9, and adjustment blocks 13 are slidable in the slide grooves, and positioning pins are provided between the adjustment blocks 13 and the slide grooves, and two support rods 14 are rotatably connected to the adjustment blocks 13, and the support rods 14 are rotatably connected to the side walls of the corresponding plate bodies 12.

[0032] In this solution, the detection distance is confirmed, and the positioning pins on the corresponding adjustment blocks 13 of the plate body 12 within the corresponding distance are removed. The guide frame of the corresponding distance can be pulled to unfold by moving the moving platform 1, and the rest of the guide frame remains in the folded state. In this solution, the support plate 9 and the unfolded plate body 12 form a flat plane. Compared with the existing telescopic structure (such as a multi-stage telescopic rod), the height difference between the various parts can be reduced, and the shaking of the sliding structure during the sliding process can be avoided, which affects the detection accuracy of the detection structure; in addition, the support rod 14 can play a certain supporting role on the plate body 12 to prevent the guide frame from bending downward.

[0033] In this embodiment, an adjustment seat is fixed between adjacent mounting plates 8 on the same workbench 4, and a movable seat 16 is arranged below the adjustment seat, and two second telescopic rods 17 are connected to the corresponding adjustment seat by ball joints; two guide rails 18 are arranged below the movable seat 16, and one end of the guide rail 18 is rotatably connected to the workbench 4, and a support 19 is slidably connected to the guide rail 18, and a vertically arranged connecting rod 20 is rotatably connected between the top of the support 19 and the movable seat 16; and a latch is detachably connected between the guide rail 18 and the workbench 4, and between the support 19 and the corresponding guide rail 18.

[0034] In the present solution, the orientation of the guide frame, that is, the detection direction, can be adjusted by rotating the guide rail 18 and the sliding support 19; in addition, the four second telescopic rods 17 are distributed in a rectangular shape. When the bridge deck is uneven, causing the movable platform 1 to tilt, one of the second telescopic rods is used as a fulcrum and remains unchanged, and the second telescopic rod 17 diagonally connected to the fulcrum is telescoped, and the other two second telescopic rods 17 cooperate to telescope, thereby adjusting the inclination angle of the two guide frames, so that the guide frames remain horizontal, and the detection structure is ensured to be horizontal during the movement, thereby reducing the detection error and improving the detection accuracy.

[0035] In this embodiment, the sliding structure includes a cylinder 21 slidably mounted on the mounting plate 8, and the two ends of the support frame 5 are respectively fixedly connected to the corresponding side walls of the cylinder 21; rollers 22 are arranged on the upper and lower ends of the inner wall of the cylinder 21, and a driving motor 23 for driving the roller 22 to rotate is arranged on the inner wall of the cylinder 21; baffles 27 are arranged on both sides of the upper and lower end surfaces of the mounting plate 8 and the support plate 9, and a limit plate 28 is arranged on the end surface of the plate body 12, which is opposite to the baffle 27.

[0036] In this solution, the baffle plate 27 and the limit plate 28 are used to limit and guide the roller 22, ensuring that the moving direction of the sliding structure is the same as the direction of the guide frame, thereby avoiding detection errors.

[0037] In this embodiment, the spraying device includes a liquid storage tank 24, two liquid storage chambers are arranged in the liquid storage chamber, and pigments of different colors are stored in the two liquid storage chambers. Through holes are arranged at the bottom of each liquid storage chamber; a closed groove is coaxially arranged in the middle of the through hole, and a closed plate 25 is slidably arranged in the closed groove. An installation cavity is opened on one side of the closed groove, and a third telescopic rod 26 electrically connected to the controller is arranged in the installation cavity, and the end of the third telescopic rod 26 is connected and fixed to the corresponding sealing plate.

[0038] In this solution, when the support rod 7 moves to the recessed area, the pressure sensor detects that the pressure is reduced, and the controller is used to control the third telescopic rod 26 in one of the installation cavities to drive the corresponding closing plate 25 to move into the installation cavity, so that the pigment flows down from the through hole to complete the spraying operation in the recessed area. When the pressure is restored, the controller controls the corresponding third telescopic rod 26 to drive the corresponding closing plate 25 to reset, and the pigment is really blocked from continuing to spray; when the support rod 7 moves to the raised area, the pressure sensor detects that the pressure increases, and the controller is used to control the third telescopic rod 26 in another installation cavity to drive the corresponding closing plate 25 to move into the installation cavity, so that the pigment flows down from the through hole to complete the spraying operation in the raised area. When the pressure is restored, the controller controls the corresponding third telescopic rod 26 to drive the corresponding closing plate 25 to reset, and the pigment is really blocked from continuing to spray; in addition, the greater the degree of depression and protrusion of the bridge deck, the greater the pressure change detected by the pressure sensor, and then the controller controls the third telescopic rod 26 to shrink more, so that the opening range of the through hole is larger, the more pigment flows out, and the spraying marks are more obvious, so as to facilitate distinction.

[0039] In this embodiment, rubber blocks are provided between the plate body 12 and the ends of the support plate 9 (conventional technical means, so not shown in the figure).

[0040] By providing a rubber block and utilizing the deformable property of the rubber block to fill the gap between the plate body 12 and the support plate 9, the sliding structure is further prevented from shaking during movement.

[0041] In this embodiment, the bottom of the movable platform 1 is provided with brushes (conventional technical means, so not shown in the figure).

[0042] By providing the bristles, the bridge surface can be cleaned by the bristles during the movement of the mobile platform 1, thereby preventing debris such as gravel from affecting the detection result.

[0043] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A device for detecting flatness of bridge construction based on the Internet of Things, characterized in that: The invention comprises two symmetrically arranged mobile platforms, the bottom of each of which is provided with a plurality of universal wheels and a vacuum suction cup, the top of each of which is coaxially rotatably connected with a workbench, and a locking pin is detachably connected between the workbench and the mobile platform; two sets of guide frames with telescopic structures are arranged between the opposite ends of the workbench, each of which is provided with a sliding structure, a detection structure is arranged between the sliding structures, the detection structure comprises a support frame connected with corresponding sliding structures at both ends, a plurality of first telescopic rods vertically downward are arranged on the support frame, the ends of the telescopic rods are coaxially slidably connected with support rods, an elastic support member is arranged between the support rod and the end of the telescopic rod, the ends of the support rods are provided with pressure sensors for detecting the size of the pressure on the ends of the support rods, a spraying device is arranged on one side of the support rod, and a controller connected with the pressure sensor and the spraying device is arranged on the support frame.

2. The device for detecting flatness of bridge construction based on the Internet of Things according to claim 1 is characterized in that: The guide frame includes two mounting plates arranged on corresponding workbenches, a plurality of support plates are arranged between adjacent mounting plates in the same guide frame, both ends of the support plates are fixed with rotating shafts parallel to the support frame, two support shafts symmetrically distributed up and down are arranged between adjacent support plates, the support shafts are parallel to the rotating shafts, plate bodies are symmetrically hinged on both sides of the support shafts, and the ends of the plate bodies are detachably hinged to the corresponding support shafts; the width and thickness of the mounting plate and the support plate are the same, and the thickness of the plate body is half the thickness of the support plate; sliding grooves are provided on both side ends of the support plates, and adjustment blocks are slidable in the sliding grooves, and positioning pins are provided between the adjustment blocks and the sliding grooves, and two support rods are rotatably connected to the adjustment blocks, and the support rods are rotatably connected to the corresponding side walls of the plate bodies.

3. The device for detecting flatness of bridge construction based on the Internet of Things according to claim 2 is characterized in that: An adjustment seat is fixed between adjacent mounting plates on the same workbench, a movable seat is arranged below the adjustment seat, and two second telescopic rods are connected to the movable seat and the corresponding adjustment seat by ball joints; two guide rails are arranged below the movable seat, one end of the guide rail is rotatably connected to the workbench, a support is slidably connected to the guide rail, and a vertically arranged connecting rod is rotatably connected between the top of the support and the movable seat; and latches are detachably connected between the guide rail and the workbench, and between the support and the corresponding guide rail.

4. The device for detecting flatness of bridge construction based on the Internet of Things according to claim 3 is characterized in that: The sliding structure includes a cylinder slidably mounted on a mounting plate, and the two ends of the support frame are respectively fixedly connected to the corresponding side walls of the cylinder; rollers are arranged at the upper and lower ends of the inner wall of the cylinder, and a driving motor for driving the rollers to rotate is arranged on the inner wall of the cylinder; baffles are arranged on both sides of the upper and lower end surfaces of the mounting plate and the support plate, and a limit plate is arranged on the end surface of the plate body opposite to the baffle.

5. The device for detecting flatness of bridge construction based on the Internet of Things according to claim 4 is characterized in that: The spraying device includes a liquid storage box, two liquid storage chambers are arranged in the liquid storage chamber, and pigments of different colors are stored in the two liquid storage chambers. Through holes are arranged at the bottom of each liquid storage chamber. A closed groove is coaxially arranged in the middle of the through hole, and a closed plate is slidably arranged in the closed groove. An installation cavity is opened on one side of the closed groove, and a third telescopic rod electrically connected to the controller is arranged in the installation cavity, and the end of the third telescopic rod is connected and fixed to the corresponding sealing plate.

6. The device for detecting flatness of bridge construction based on the Internet of Things according to claim 5 is characterized in that: Rubber blocks are arranged between the plate body and the end of the support plate.

7. The device for detecting flatness of bridge construction based on the Internet of Things according to claim 6 is characterized in that: The bottom of the moving platform is provided with brush bristles.

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