A bridge deflection detection device and its detection method

Abstract

This application relates to a bridge deflection detection device and method, belonging to the field of bridge deflection detection. The bridge deflection detection device includes a support assembly, a detection assembly, and a moving assembly. The support assembly includes support plates and steel wire ropes. Multiple support plates are provided and fixedly installed at both ends of the bridge bottom. Multiple steel wire ropes are provided, all arranged parallel to each other, with their ends connected to the support plates at both ends of the bridge bottom. The detection assembly includes a detection plate and a digital dial indicator. Multiple steel wire ropes are threaded through the detection plate and slidably connected to it. The digital dial indicator is fixedly installed on the detection plate, with its probe abutting against the bridge bottom. The moving assembly is located between the multiple steel wire ropes and the detection plate and is used to drive the detection plate to move along the extension direction of the steel wire ropes. This application has the effect of facilitating deflection detection of bridges with obstacles below.

Description

Technical Field

[0001] This application relates to the field of bridge deflection detection, and in particular to a bridge deflection detection device and its detection method. Background Technology

[0002] Bridge deflection is an important indicator of bridge safety, and bridge deflection needs to be tested during both the final acceptance inspection and the service life of the bridge.

[0003] Currently, bridge deflection is usually measured using dial gauges. During the test, the dial gauge is fixedly installed on a lifting device, which raises the dial gauge to the bottom of the bridge and brings the dial gauge probe into contact with the bottom of the bridge. Then, the lifting mechanism is moved along the extension direction of the bridge, and the dial gauge measures the bridge deflection during the movement.

[0004] When there are obstacles under the bridge, such as water or green areas, the lifting mechanism is not convenient to move under the bridge, making it difficult to measure the bridge's deflection. Summary of the Invention

[0005] To facilitate the deflection detection of bridges with obstacles below, this application provides a bridge deflection detection device and its detection method.

[0006] Firstly, this application provides a bridge deflection detection device, which adopts the following technical solution:

[0007] A bridge deflection detection device, comprising:

[0008] The support assembly includes a support plate and a steel wire rope;

[0009] The support plate, there are multiple support plates, and the multiple support plates are respectively fixedly installed at both ends of the bottom of the bridge;

[0010] The steel wire rope is provided in multiple strands, all of which are arranged in parallel. The two ends of the steel wire rope are respectively connected to the support plates at both ends of the bottom of the bridge.

[0011] The detection component includes a detection plate and a digital dial indicator;

[0012] The detection plate has multiple steel wire ropes that are threaded through it and slidably connected to it.

[0013] The digital dial indicator is fixedly mounted on the detection plate, and its probe abuts against the bottom of the bridge.

[0014] A movable component is disposed between the plurality of steel wire ropes and the detection plate, and is used to drive the detection plate to move along the extension direction of the steel wire ropes.

[0015] By adopting the above technical solution, multiple support plates are fixed to both ends of the bridge bottom, and steel wire ropes are connected to both ends of the bridge bottom. A digital dial indicator is connected to the steel wire rope through a detection plate. The moving component drives the detection plate and the digital dial indicator to move. During the movement, the digital dial indicator detects the bridge deflection. This allows the digital dial indicator to directly detect the deflection at the bottom of the bridge through the support plates and steel wire ropes, and it is not easily affected by obstacles below the bridge. Therefore, the detection device facilitates the deflection detection of bridges with obstacles below.

[0016] Optionally, the digital dial indicator is electrically connected to a controller, and the controller is electrically connected to a display panel, which is used to display the measured value measured by the digital dial indicator.

[0017] By adopting the above technical solution, the controller transmits the measured value of the digital dial indicator to the display panel, which then displays the measured value of the digital dial indicator, making it convenient for the testing personnel to view the measurement data in real time.

[0018] Optionally, a laser emitter is fixedly mounted on the detection plate, and a CCD detection unit is fixedly connected to the support plate at one end of the bridge. The laser emitter faces the CCD detection unit and emits a laser beam that irradiates the CCD detection unit. The CCD detection unit is electrically connected to the controller and is used to transmit the displacement value of the detection plate away from or near the bottom of the bridge to the controller. The display panel is used to display the displacement value measured by the CCD detection unit.

[0019] By adopting the above technical solution, the laser emitter moves along the steel wire rope with the detection plate. When the detection plate approaches or moves away from the bottom of the bridge, the laser emitter follows the plate. The laser beam from the emitter illuminates the CCD detection unit. The CCD detection unit calculates the displacement value of the laser emitter as it approaches or moves away from the bottom of the bridge based on the change in the laser illumination position. The CCD detection unit records the displacement value when the laser emitter approaches the bottom of the bridge as a positive value and the displacement value when it moves away from the bottom of the bridge as a negative value. The CCD detection unit transmits the displacement value to the controller, which then transmits it to the display panel. The display panel shows the displacement value, allowing the inspector to see the magnitude of the error of the digital dial indicator during the measurement process. When the maximum displacement value exceeds 5% of the maximum measured value, the bridge deflection detection data is canceled, and the bridge deflection is remeasured. By judging the magnitude of the error, the accuracy of the detection device in detecting bridge deflection is improved.

[0020] Optionally, the controller is used to calculate the measured value of the bridge deflection based on the measured value and the displacement value, and to display the measured value through the display panel.

[0021] By adopting the above technical solution, since the displacement value transmitted from the CCD detection unit to the controller has both positive and negative values, the controller directly subtracts the measured value from the displacement value to calculate the actual value of the bridge deflection, thereby reducing the error in the measurement process and making the detection of bridge deflection more accurate.

[0022] Optionally, a spool is rotatably connected to the support plate at one end of the bridge. The spool is located on the side of the support plate away from the detection plate. A coil spring is fixedly installed between the spool and the support plate. Multiple steel wire ropes are threaded through the support plate connected to the spool and are slidably connected to the support plate. One end of each steel wire rope is fixedly connected to the spool and wound around the spool. A fixing part is provided between the steel wire rope and the support plate connected to the spool, and a tensioning part is provided between the steel wire rope and the support plate away from the spool. The fixing part is used to fix the steel wire rope to the support plate, and the tensioning part is used to tighten the steel wire rope.

[0023] By adopting the above technical solution, the wire rope is wound on the reel, making it easy to adjust the length of the wire rope according to the length of the bridge. This allows the testing device to adapt to the deflection testing of bridges of different lengths, expanding the application range of the testing device. The fixing and tensioning parts make it easy for the wire rope to be in a taut and straight state during the testing process, reducing the measurement error of the digital dial indicator.

[0024] Optionally, the fixing part includes a fixing block, a clamping block, and fixing bolts. The fixing block and the clamping block are respectively located on both sides of the wire rope. The fixing block is fixedly connected to the support plate, and the clamping block is slidably connected to the support plate. Multiple fixing bolts are provided, and the multiple fixing bolts are respectively located at both ends of the fixing block. The fixing bolts pass through the fixing block and the clamping block, and the fixing bolts are threadedly connected to the fixing block and rotatably connected to the clamping block.

[0025] By adopting the above technical solution, the two fixing bolts at both ends of the fixing block are rotated. The fixing bolts are connected to the fixing block by threads, causing the clamping block to move toward the fixing block until the clamping block and the fixing block clamp the wire rope, so that the wire rope and the support plate are in a stable fixed connection state, thereby facilitating the wire rope to provide stable support for the detection plate.

[0026] Optionally, the tensioning part includes a tensioning bolt and a tensioning nut. The tensioning bolt passes through the support plate and is threadedly connected to the support plate. The end of the wire rope away from the spool is rotatably connected to the end of the tensioning bolt near the spool. Multiple tensioning nuts are provided and are all located at the end of the support plate away from the wire rope. The multiple tensioning nuts are threaded onto the tensioning bolt.

[0027] By adopting the above technical solution, the tension bolt is rotated. Since the tension bolt is rotatably connected to the wire rope, it is not easy for the tension bolt to drive the wire rope to rotate during the rotation process. The tension bolt moves relative to the support plate through the thread, and the tension bolt drives the wire rope to move until the wire rope is in a taut state, so that the tension of the wire rope is easy to adjust. Then, multiple tension nuts are moved to the support plate. The multiple tension nuts make it difficult for the tension bolt to loosen from the support plate.

[0028] Optionally, the moving component includes a dual-head motor, a drive wheel, and an auxiliary wheel. The dual-head motor is fixedly connected to the detection plate. There are two drive wheels and two auxiliary wheels, each corresponding to one of the steel wire ropes. The two drive wheels are coaxially fixedly connected to the two output shafts of the dual-head motor. The auxiliary wheel is rotatably connected to the detection plate. Both the drive wheel and the auxiliary wheel are in close contact with the steel wire ropes.

[0029] By adopting the above technical solution, the drive wheel is driven to rotate by a dual-head motor. The drive wheel cooperates with the auxiliary wheel to move the detection plate on the steel wire rope. The dual-head motor drives the two steel wire ropes synchronously, making the movement of the detection plate more stable.

[0030] Optionally, a plurality of rollers are provided between the wire rope and the detection plate. The plurality of rollers are arranged along the circumference of the wire rope. The rollers are rotatably connected to the detection plate and their sidewalls are in close contact with the wire rope. The rotation axis of the rollers is perpendicular to the axial direction of the wire rope.

[0031] By adopting the above technical solution, the wire rope is slidably connected to the detection plate through multiple rollers, making it more convenient and stable for the detection plate to move relative to the wire rope, and making it less likely for the detection plate to get stuck with the wire rope during the movement.

[0032] Secondly, this application provides a detection method for a bridge deflection detection device, which adopts the following technical solution:

[0033] A method for detecting bridge deflection using a bridge deflection detection device includes the following steps:

[0034] Fixing the support plates: Fix multiple support plates to both ends of the bridge respectively, and keep the steel wire rope in a taut state;

[0035] Zeroing the digital dial indicator: Place the probe of the digital dial indicator against the bottom of the bridge, and then operate the digital dial indicator to zero it.

[0036] Moving the digital display dial indicator: The moving component drives the detection plate to move, the detection plate drives the digital display dial indicator to move, and the digital display dial indicator measures the bridge deflection during the movement and transmits the measured value to the controller;

[0037] Error measurement: The laser emitter irradiates the CCD detection unit with a laser beam, and the CCD detection unit transmits the displacement value of the detection plate to the controller;

[0038] Data transmission: The controller calculates the measured value based on the measured value and the displacement value, and transmits the measured value, displacement value, and measured value to the display panel;

[0039] Viewing deflection data: The display panel displays the measured values, displacement values, and actual values ​​in the form of a line graph, revealing the trend of bridge deflection and completing the detection of bridge deflection.

[0040] By adopting the above technical solution, multiple steel wire ropes are installed at the bottom of the bridge through a support plate. The steel wire ropes support the detection plate and digital dial indicator. The moving component drives the detection plate and digital dial indicator to move along the extension direction of the steel wire ropes. The digital dial indicator detects the deflection of the bridge during the movement. This makes it less likely for obstacles under the bridge to affect the detection process of the detection device, making it easier for the detection device to detect the deflection of bridges with obstacles underneath.

[0041] The controller subtracts the measured value from the digital dial indicator from the displacement value, which has both positive and negative values, to calculate the actual value of the bridge deflection, making the detection of bridge deflection more accurate. The controller transmits the measured value, displacement value, and actual value to the display panel, which displays the measured value, displacement value, and actual value in the form of a line graph. This makes it easy for inspectors to view the measurement data and to intuitively see the changes in bridge deflection through the trend of the line graph, making the detection results of bridge deflection clearer.

[0042] In summary, this application includes at least one of the following beneficial technical effects:

[0043] 1. The digital dial indicator is installed at the bottom of the bridge via a support plate and steel wire rope. The detection plate is moved by a double-headed motor, which makes the detection of bridge deflection less affected by obstacles below the bridge. Thus, the detection device is convenient for deflection detection of bridges with obstacles below.

[0044] 2. The displacement of the detection plate near or away from the bottom of the bridge is measured by a laser emitter and a CCD detection unit, which makes it easy for the inspectors to know the magnitude of the error of the digital dial indicator during the measurement process, and thus the accuracy of the measurement data can be easily determined by the magnitude of the error.

[0045] 3. By setting a fixing part and a tensioning part at both ends of the wire rope, the wire rope can be easily straightened and tightened after being adjusted by the pulley, thus facilitating the wire rope to provide stable support for the detection plate and digital dial indicator. Attached Figure Description

[0046] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0047] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0048] Figure 3 yes Figure 1 Enlarged view at point B;

[0049] Figure 4 yes Figure 1 A magnified view at point C;

[0050] Figure 5 It is a schematic diagram intended to illustrate the broken lines of measured values, displacement values, and actual measured values.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Support assembly; 11. Support plate; 111. Wire wheel; 112. Coil spring; 113. Fixing plate; 12. Steel wire rope; 13. Fixing part; 131. Fixing block; 1311. Fixing hole; 132. Clamping block; 133. Fixing bolt; 14. Tensioning part; 141. Tensioning bolt; 142. Tensioning nut; 2. Detection assembly; 21. Detection plate; 211. Roller; 22. Digital dial indicator; 23. Controller; 24. Display panel; 3. Moving assembly; 31. Dual-head motor; 32. Drive wheel; 33. Auxiliary wheel; 4. Correction assembly; 41. Laser emitter; 42. CCD detection unit. Detailed Implementation

[0053] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0054] This application discloses a bridge deflection detection device. (Refer to...) Figure 1 A bridge deflection detection device includes a support component 1, a detection component 2, a moving component 3, and a correction component 4. The support component 1 is connected to the bottom of the bridge. The detection component 2, the moving component 3, and the correction component 4 are all mounted on the support component 1. The support component 1 is used to support the detection component 2, the moving component 3, and the correction component 4. The detection component 2 is used to detect the bridge deflection. The moving component 3 is used to drive the detection component 2 to move along the length of the bridge. The correction component 4 is used to measure the error of the detection component 2 during the measurement process.

[0055] In use, the support component 1 is installed at the bottom of the bridge, and the moving component 3 drives the detection component 2 to move along the length of the bridge. During the movement, the detection component 2 measures the deflection of the bridge. The correction component 4 measures the error of the detection component 2 during the measurement process, which makes the detection device easy to detect the deflection of bridges with obstacles below, and improves the accuracy of bridge deflection detection.

[0056] Reference Figure 1 The support assembly 1 includes a support plate 11, a steel wire rope 12, a fixing part 13, and a tensioning part 14. Two support plates 11 are provided, located at opposite ends of the bridge bottom. Each support plate 11 is rectangular and vertically arranged, with the two support plates 11 facing each other. A fixing plate 113 is fixedly connected to the top of each support plate 11. The fixing plate 113 is rectangular and horizontally arranged, and is bolted to the bridge bottom.

[0057] Reference Figure 1 and Figure 2 One of the support plates 11 is provided with a spool 111 on the side away from the other support plate 11. The spool 111 is horizontally positioned and both ends of the axial direction are rotatably connected to the support plate 11. A coil spring 112 is fixedly connected between one end of the spool 111 and the support plate 11.

[0058] Reference Figure 1 There are three steel wire ropes 12. All three steel wire ropes 12 are located between two support plates 11 and are horizontally arranged. The length direction of the steel wire ropes 12 is perpendicular to the plate surface of the support plate 11. One steel wire rope 12 is located above the other two steel wire ropes 12. The other two steel wire ropes 12 are located in the same horizontal plane.

[0059] Reference Figure 2 One end of the wire rope 12 near the support plate 11 of the connecting reel 111 is threaded onto the support plate 11, and the wire rope 12 is slidably connected to the support plate 11. The end of the wire rope 12 located on the support plate 11 near the reel 111 is fixedly connected to the reel 111 and wound around the reel 111.

[0060] Reference Figure 1 Multiple fixing parts 13 and tensioning parts 14 are provided, and each corresponds to a steel wire rope 12. The fixing part 13 is located at one end of the steel wire rope 12 near the support plate 11 of the connecting wheel 111, and the tensioning part 14 is located at one end of the steel wire rope 12 away from the support plate 11 of the connecting wheel 111.

[0061] Reference Figure 2 The fixing part 13 includes a fixing block 131, a clamping block 132 and a fixing bolt 133. The fixing block 131 and the clamping block 132 are both rectangular blocks and are horizontally arranged. The fixing block 131 is located above the wire rope 12 and the clamping block 132 is located below the wire rope 12. The fixing block 131 is fixedly connected to the support plate 11 and the clamping block 132 is slidably connected to the support plate 11 in the vertical direction.

[0062] Fixing holes 1311 are provided on the sides of the fixing block 131 and the clamping block 132 that are close to each other. The fixing holes 1311 are arc-shaped and adapted to the wire rope 12. The arc of the fixing holes 1311 is less than 180°. The fixing holes 1311 on the fixing block 131 and the clamping block 132 correspond to the wire rope 12. The fixing holes 1311 on the fixing block 131 penetrate the thickness of the fixing block 131, and the fixing holes 1311 on the clamping block 132 penetrate the thickness of the clamping block 132. The side of the wire rope 12 that is close to the fixing block 131 is located in the fixing hole 1311 of the fixing block 131.

[0063] There are two fixing bolts 133. The two fixing bolts 133 are located at both ends of the clamping block 132 along its length and are both vertically arranged. The fixing bolts 133 pass through the fixing block 131 and the clamping block 132. The fixing bolts 133 are threadedly connected to the fixing block 131 and rotatably connected to the clamping block 132. The bolt head of the fixing bolt 133 is located on the side of the clamping block 132 away from the fixing block 131, and the clamping block 132 abuts against the bolt head of the fixing bolt 133.

[0064] Reference Figure 3 The tensioning part 14 includes a tensioning bolt 141 and a tensioning nut 142. The tensioning bolt 141 passes through the support plate 11 and is threadedly connected to the support plate 11. The bolt head of the tensioning bolt 141 is located on the side of the support plate 11 away from the wire rope 12. The wire rope 12 is rotatably connected to the end of the tensioning bolt 141 away from its own bolt head.

[0065] There are two tension nuts 142. Both tension nuts 142 are fitted onto tension bolts 141 and are compatible with tension bolts 141. The two tension nuts 142 are arranged in a direction away from support plate 11.

[0066] In use, the two support plates 11 are fixed to both ends of the bridge bottom via the fixing plates 113. The wire rope 12 is pulled from the reel 111 according to the bridge length until its length matches the bridge length. Then, the fixing bolt 133 is rotated, causing it to move relative to the fixing block 131 via its thread. During this movement, the fixing bolt 133 drives the clamping block 132 to move towards the wire rope 12 until the clamping block 132 and the fixing block 131 together clamp the wire rope 12. Fix it, and then rotate the tension bolt 141. The tension bolt 141 moves relative to the support plate 11 through the thread until the wire rope 12 is in a straight and taut state. Move the two tension nuts 142 toward the support plate 11. The two tension nuts 142 are not easy to loosen due to the double nut anti-loosening principle. Thus, the wire rope 12 can be in a straight and taut state through the fixing part 13 and the tensioning part 14, so that the wire rope 12 can provide stable support.

[0067] Reference Figure 1 and Figure 4 The detection component 2 includes a detection plate 21, a digital dial indicator 22, a controller 23, and a display panel 24. The detection plate 21 is triangular in shape and is mounted on three steel wire ropes 12. All three steel wire ropes 12 are threaded through the detection plate 21 and are located at the three apex corners of the detection plate 21. The detection plate 21 and the three steel wire ropes 12 are slidably connected. The surface of the detection plate 21 is perpendicular to the length direction of the steel wire ropes 12.

[0068] Reference Figure 4 Multiple rollers 211 are provided between the detection plate 21 and the wire rope 12. The multiple rollers 211 are arranged around the circumference of the wire rope 12. Both ends of the rollers 211 are rotatably connected to the detection plate 21 in the axial direction. The axial direction of the rollers 211 is perpendicular to the length direction of the wire rope 12. The sidewalls of the rollers 211 are in close contact with the wire rope 12.

[0069] The digital dial indicator 22 is fixedly installed at the top of the detection plate 21, and the probe is located on the side of the digital dial indicator 22 away from the detection plate 21. The probe of the digital dial indicator 22 is in contact with the bottom of the bridge through a rolling wheel.

[0070] Reference Figure 1 and Figure 4 The controller 23 is fixedly mounted at the center of the detection plate 21. The controller 23 is electrically connected to the display panel 24 and the digital dial indicator 22. The digital dial indicator 22 is used to transmit the measured value to the controller 23, the controller 23 is used to transmit the measured value to the display panel 24, and the display panel 24 is used to display the measured value in the form of a line graph.

[0071] The moving component 3 includes a dual-head motor 31, drive wheels 32, and auxiliary wheels 33. The dual-head motor 31 is fixedly mounted at the bottom of the detection plate 21, on the side of the detection plate 21 away from the wire reel 111, and its output shaft is horizontally positioned. Two drive wheels 32 are provided, each corresponding to one of the two steel wire ropes 12 at the bottom of the detection plate 21. The two drive wheels 32 are coaxially fixedly connected to the two output shafts of the dual-head motor 31. Two auxiliary wheels 33 are provided, each corresponding to one of the drive wheels 32. The auxiliary wheels 33 are rotatably connected to the detection plate 21, and their rotation axes are the same as those of the drive wheels 32. The drive wheels 32 are located above the steel wire ropes 12, and the auxiliary wheels 33 are located below the steel wire ropes 12. The sidewalls of both the drive wheels 32 and the auxiliary wheels 33 are in close contact with the steel wire ropes 12.

[0072] In use, the side of the digital dial indicator 22 is placed against the bottom of the bridge via the rolling wheels. The digital dial indicator 22 is zeroed, and the dual-head motor 31 is started. The dual-head motor 31 drives the drive wheel 32 to rotate. The drive wheel 32 cooperates with the auxiliary wheel 33 to move the detection plate 21. The detection plate 21 drives the digital dial indicator 22 from the support plate 11 of the connecting wheel 111 to another support plate 11. During the movement, the digital dial indicator 22 measures the deflection of the bridge and transmits the measured value to the controller 23. The controller 23 then transmits the measured value to the display panel 24. The display panel 24 displays the measured value in the form of a line graph, making it convenient for the detection device to detect the deflection of bridges with obstacles below.

[0073] Reference Figure 1 The correction component 4 includes a laser emitter 41 and a CCD detection unit 42. The laser emitter 41 is fixedly mounted on the bottom end of the detection plate 21, and the CCD detection unit 42 is fixedly mounted on the support plate 11 connected by the fixing bolt 133 and located at the bottom end of the support plate 11. The laser emitter 41 is horizontally mounted, and the CCD detection unit 42 is vertically mounted. The emitting head of the laser emitter 41 faces the CCD detection unit 42, and the emitted laser irradiates the CCD detection unit 42.

[0074] Reference Figure 1 and Figure 4 The CCD detection unit 42 is electrically connected to the controller 23. When the detection plate 21 moves the laser emitter 41 closer to the bottom of the bridge, the light spot irradiated by the laser emitter 41 on the CCD detection unit 42 moves closer to the bottom of the bridge. The CCD detection unit 42 records the displacement value of the light spot moving closer to the bridge as positive and transmits it to the controller 23. When the detection plate 21 moves the laser emitter 41 away from the bottom of the bridge, the light spot irradiated by the laser emitter 41 on the CCD detection unit 42 moves away from the bottom of the bridge. The CCD detection unit 42 records the displacement value of the light spot moving away from the bridge as negative and transmits it to the controller 23.

[0075] Reference Figure 4 and Figure 5 The controller 23 transmits positive and negative displacement values ​​to the display panel 24, which displays the displacement values ​​in the form of a line graph. The measured value on the display panel 24 is denoted as 'a', the displacement value as 'b', and the measured bridge deflection as 'S', where 'b' has a positive or negative sign. Therefore, S = ab. The display panel 24 displays the measured values ​​in the form of a line graph, with the line formed by the measured value 'a' denoted as 'c', the line formed by the displacement value 'b' as 'd', and the line formed by the measured value 'S' as 'T'.

[0076] In use, the laser emitter 41 illuminates the CCD detection unit 42 with a laser beam. The CCD detection unit 42 detects the position of the laser spot. As the detection plate 21 moves, it drives the laser emitter 41 to move closer to or further away from the bottom of the bridge. The spot of the laser emitted by the laser emitter 41 on the CCD detection unit 42 moves with the laser emitter 41. The CCD detection unit 42 transmits the displacement value of the spot movement, with positive and negative values, to the controller 23. The controller 23 transmits the displacement value to the display panel 24. The display panel 24 displays the displacement value in the form of a line graph and calculates the measured value according to S=ab. The display panel 24 also displays the measured value in the form of a line graph, so that the detection device makes it easy for the detection personnel to view the measurement data.

[0077] The implementation principle of the bridge deflection detection device in this application embodiment is as follows: In use, two support plates 11 are fixed to both ends of the bridge through fixing plates 113. At the same time, the wire rope 12 is pulled out from the reel 111. The fixing bolt 133 is rotated, and the fixing bolt 133 drives the clamping block 132 to move until the clamping block 132 clamps the wire rope 12 on the fixing block 131. The tension bolt 141 is rotated, and the tension bolt 141 drives the wire rope 12 to move until the wire rope 12 is in a straight and taut state. The two tension nuts 142 are moved to make the tension bolt 141 less likely to rotate.

[0078] The dual-head motor 31 is started, and the dual-head motor 31 drives the detection plate 21 to move along the extension direction of the wire rope 12 through the drive wheel 32 and the auxiliary wheel 33. The detection plate 21 drives the digital display dial indicator 22 to move. During the movement, the digital display dial indicator 22 measures the deflection of the bridge and transmits the measured value to the controller 23. The displacement value of the digital display dial indicator 22 during the measurement process is measured by the laser emitter 41 and the CCD detection unit 42. The CCD detection unit 42 transmits the displacement value to the controller 23. The controller 23 calculates the measured value based on the measured value and the displacement value, and transmits the measured value, displacement value and measured value to the display panel 24. The display panel 24 displays the measured value, displacement value and measured value in the form of a line graph, which makes it easy for the detection device to detect the deflection of the bridge with obstacles below, and makes it easy for the inspection personnel to view the measurement data intuitively.

[0079] This application also discloses a detection method for a bridge deflection detection device, including the following steps:

[0080] Fixed support plate 11: Multiple support plates 11 are fixed to both ends of the bridge respectively through fixed plate 113, and the wire rope 12 is pulled out of the pulley 111;

[0081] Fixing the wire rope 12: Rotate the fixing bolt 133, and the fixing bolt 133 will drive the clamping block 132 to move toward the fixing block 131. The fixing block 131 and the clamping block 132 clamp the wire rope 12 through the fixing hole 1311.

[0082] Tighten the wire rope 12: Rotate the tension bolt 141, which drives the wire rope 12 to move until the wire rope 12 is in a straightened and taut state. Move the two tension nuts 142, which fix the tension bolt 141 to the support plate 11.

[0083] Zeroing the digital dial indicator 22: Place the probe of the digital dial indicator 22 against the bottom of the bridge via the roller, and then operate the digital dial indicator 22 to zero it.

[0084] Moving digital dial indicator 22: Start the dual-head motor 31, the dual-head motor 31 drives the drive wheel 32 to rotate, the drive wheel 32 and the auxiliary wheel 33 drive the detection plate 21 to move, the detection plate 21 drives the digital dial indicator 22 to move, the digital dial indicator 22 measures the bridge deflection during the movement and transmits the measured value to the controller 23.

[0085] Error measurement: The laser emitter 41 irradiates the CCD detection unit 42 with a laser beam, and the CCD detection unit 42 transmits the displacement value of the detection plate 21 to the controller 23;

[0086] Calculate the measured value: The controller 23 calculates the measured value by subtracting the displacement value from the measured value according to S=ab;

[0087] Data transmission: The controller 23 transmits the measured value, displacement value, and actual measured value to the display panel 24;

[0088] View deflection data: Display panel 24 displays the measured values, displacement values, and actual values ​​in the form of a line graph, showing the trend of bridge deflection and completing the bridge deflection detection.

[0089] During bridge deflection testing, the testing plate 21 and digital dial indicator 22 are connected to the bottom of the bridge via steel wire rope 12 and support plate 11, making the bridge deflection test less susceptible to the influence of obstacles below the bridge. The steel wire rope 12 is fixed to the support plate 11 by clamping block 132 and fixing block 131, and the steel wire rope 12 is kept straight and taut by tension bolt 141, so that the steel wire rope 12 can provide stable support for the testing plate 21 and digital dial indicator 22.

[0090] The dual-head motor 31 drives the detection plate 21 to move via the drive wheel 32 and the auxiliary wheel 33. The detection plate 21 drives the digital dial indicator 22 to move. During the movement, the digital dial indicator 22 measures the bridge deflection and transmits the measured value to the controller 23. The laser emitter 41 and the CCD detection unit 42 work together to transmit the displacement value of the error during the measurement process of the digital dial indicator 22 to the controller 23. The controller 23 calculates the measured value based on the measured value and the displacement value, and transmits the measured value, displacement value, and measured value to the display panel 24. The display panel 24 displays the measured value, displacement value, and measured value in the form of a line graph, which makes it easy for the detection device to detect the deflection of bridges with obstacles below, and also makes it easy for the inspection personnel to view the measurement data intuitively.

[0091] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bridge deflection detection device, characterized by, Include: Supporting assembly (1), the supporting assembly (1) includes support plate (11) and steel wire rope (12); The support plate (11) is provided with a plurality of support plates (11), and the two ends of the bridge bottom are fixed respectively; The steel wire rope (12) is provided with a plurality of steel wire ropes (12), and the two ends of the bridge bottom are connected with the support plate (11) respectively; Detection assembly (2), the detection assembly (2) includes detection plate (21) and digital dial gauge (22); The detection plate (21) is provided with a plurality of steel wire ropes (12), and is connected with the detection plate (21); The digital dial gauge (22) is fixedly arranged on the detection plate (21), and the measuring head is in abutment with the bridge bottom; The moving assembly (3) is arranged between the steel wire rope (12) and the detection plate (21), and is used for driving the detection plate (21) to move along the extension direction of the steel wire rope (12).

2. The bridge deflection detection device of claim 1, wherein The digital dial gauge (22) is electrically connected with the controller (23), the controller (23) is electrically connected with the display panel (24), and the display panel (24) is used for displaying the measured value measured by the digital dial gauge (22).

3. The bridge deflection detection device of claim 2, wherein The detection plate (21) is fixedly provided with a laser emitter (41), and the support plate (11) at one end of the bridge is fixedly connected with a CCD detection unit (42), the laser emitter (41) is towards the CCD detection unit (42), and the emitted laser is irradiated on the CCD detection unit (42), the CCD detection unit (42) is electrically connected with the controller (23), and is used for transmitting the displacement value of the detection plate (21) away from or close to the bridge bottom to the controller (23), and the display panel (24) is used for displaying the displacement value measured by the CCD detection unit (42).

4. The bridge deflection detection device of claim 3, wherein The controller (23) is used for calculating the measured value of the bridge deflection according to the measured value and the displacement value, and is used for displaying the measured value through the display panel (24).

5. The bridge deflection detection device of claim 4, wherein The support plate (11) at one end of the bridge is rotatably connected with a wire wheel (111), the wire wheel (111) is located on the side of the support plate (11) away from the detection plate (21), a coil spring (112) is fixedly arranged between the wire wheel (111) and the support plate (11), a plurality of steel wire ropes (12) are all arranged on the support plate (11) connected with the wire wheel (111) and are all in sliding connection with the support plate (11), one end of the steel wire rope (12) arranged on the support plate (11) is fixedly connected to the wire wheel (111) and is arranged around the wire wheel (111), a fixed part (13) is arranged between the steel wire rope (12) and the support plate (11) connected with the wire wheel (111), a tensioning part (14) is arranged between the steel wire rope (12) and the support plate (11) away from the wire wheel (111), the fixed part (13) is used for fixing the steel wire rope (12) and the support plate (11), and the tensioning part (14) is used for tensioning the steel wire rope (12).

6. The bridge deflection detection device of claim 5, wherein The fixed part (13) comprises a fixed block (131), a clamping block (132) and a fixed bolt (133), the fixed block (131) and the clamping block (132) are respectively located on both sides of the steel wire rope (12), the fixed block (131) is fixedly connected with the support plate (11), the clamping block (132) is in sliding connection with the support plate (11), and a plurality of fixed bolts (133) are arranged, a plurality of fixed bolts (133) are respectively located at both ends of the fixed block (131), the fixed bolts (133) are arranged on the fixed block (131) and the clamping block (132), the fixed bolts (133) are in threaded connection with the fixed block (131) and are in rotary connection with the clamping block (132).

7. The bridge deflection detection device of claim 5, wherein The tensioning part (14) comprises a tensioning bolt (141) and a tensioning nut (142), the tensioning bolt (141) is arranged on the support plate (11) and is in threaded connection with the support plate (11), one end of the steel wire rope (12) away from the wire wheel (111) is in rotary connection with one end of the tensioning bolt (141) close to the wire wheel (111), and a plurality of tensioning nuts (142) are arranged, and are all located at one end of the support plate (11) away from the steel wire rope (12), a plurality of tensioning nuts (142) are in threaded connection with the tensioning bolt (141).

8. The bridge deflection detection device of claim 4, wherein The moving assembly (3) comprises a double-head motor (31), drive wheels (32) and auxiliary wheels (33), the double-head motor (31) is fixedly connected with the detection plate (21), the drive wheels (32) and the auxiliary wheels (33) are provided with two and one-to-one correspondence, two drive wheels (32) correspond to two steel wires (12), two drive wheels (32) are coaxially fixedly connected on two output shafts of the double-head motor (31), the auxiliary wheels (33) are rotatably connected with the detection plate (21), the drive wheels (32) and the auxiliary wheels (33) are in close abutment with the steel wire (12).

9. The bridge deflection detection device of claim 4, wherein, A plurality of rollers (211) are arranged between the steel wire (12) and the detection plate (21), a plurality of the rollers (211) are arranged along the circumference of the steel wire (12), the roller (211) is rotatably connected with the detection plate (21) and the side wall is in close abutment with the steel wire (12), the rotation axis of the roller (211) is perpendicular to the axis direction of the steel wire (12).

10. The detection method of the detection device according to any one of claims 4 to 9, characterized in that, The following steps are included: Fix the support plate (11): a plurality of support plates (11) are fixed to both ends of the bridge, and the steel wire (12) is in a tension state; Zero the digital dial gauge (22): abut the measuring head of the digital dial gauge (22) against the bottom of the bridge, and then operate the digital dial gauge (22) to zero the digital dial gauge (22); Move the digital dial gauge (22): the moving assembly (3) drives the detection plate (21) to move, the detection plate (21) drives the digital dial gauge (22) to move, and the digital dial gauge (22) measures the deflection of the bridge during movement and transmits the measurement value to the controller (23); Error measurement: the laser emitter (41) irradiates a laser beam on the CCD detection unit (42), and the CCD detection unit (42) transmits the displacement value of the detection plate (21) to the controller (23); Data transmission: the controller (23) calculates the measured value according to the measurement value and the displacement value, and transmits the measurement value, the displacement value and the measured value to the display panel (24); Viewing deflection data: the display panel (24) displays the measurement value, displacement value and measured value in the form of a line graph, obtains the change trend of the bridge deflection, and completes the detection of the bridge deflection.

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