A flatness testing device for highway bridges

Abstract

The present invention discloses a flatness detection device for highway bridges, which belongs to the technical field of flatness detection equipment, and includes a frame, and a road surface flatness meter body is installed on the top of the frame. In the present invention, through the designed pretreatment mechanism, the pretreatment mechanism can scrape the ground debris through the front scraping part when the frame is towed by the front vehicle, and at the same time, the front water guide surface of the scraping part can guide the accumulated water to the outside to discharge, so that the surface water to be measured is discharged, and the influence of the accumulated water on the measurement accuracy is reduced when the subsequent measuring wheel passes, and the measurement effect of the road surface in rainy and snowy weather is improved, and there is no need to wait for the measurement environment. At the same time, the sealing pads located on both sides of the connecting frame can fully fit the gap of the connecting frame, reduce the penetration of external water into the connecting frame, and the rotation of the scraping part can drive the brush to sweep away some of the debris remaining after scraping and some of the accumulated water that has not been discharged, which is conducive to further improving the cleanliness of the test environment.

Description

Technical Field

[0001] The invention belongs to the technical field of flatness detection equipment, and in particular relates to a flatness detection equipment for a highway bridge. Background Art

[0002] Highway bridges are built for vehicles and pedestrians on highways. They are usually made of steel, reinforced concrete or wood. The smoothness of the bridge pavement is directly related to driving safety and the service life of the bridge. Therefore, the smoothness index must comply with relevant regulations. Traditional highway smoothness testing equipment is usually carried out by a three-meter ruler and a feeler gauge. The testing range, accuracy and efficiency are all limited by human experience.

[0003] A Chinese invention patent with authorization announcement number CN116295226B discloses a highway bridge flatness detection device, including a vehicle body and a detection mechanism arranged on the vehicle body, the detection mechanism is provided with a marking assembly, the detection mechanism includes a measuring rod arranged under the vehicle body, a plurality of distance sensors are embedded inside the lower surface of the measuring rod, the distance sensor is coupled to a control center, the marking assembly includes a plurality of marking rings embedded inside the lower surface of the measuring rod, the marking ring is sleeved on the outside of the distance sensor, the interior of the marking ring is hollow, a supply box connected to the interior of the marking ring for providing dye to the marking ring is provided on the vehicle body, each marking ring is provided with a control valve that controls the connection between the marking ring and the supply box and is coupled to the control center, and a plurality of marking holes are opened downward on the marking ring, so that people can easily determine the position where the road surface flatness is poor. However, in actual use, the measuring rod of the above-mentioned equipment is easily affected by the residue on the test surface, resulting in measurement errors when measuring in rainy and snowy weather, and it is necessary to wait for the measurement opportunity, which affects the measurement processing efficiency. Summary of the invention

[0004] The purpose of the present invention is to propose a flatness detection device for highway bridges in order to solve the problem that the measuring rod of the equipment is easily affected by the residue on the test surface, resulting in measurement errors when measuring in rainy and snowy weather and the need to wait for the measurement opportunity.

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

[0006] A flatness detection device for a highway bridge comprises a frame, a road surface flatness meter body is arranged on the top of the frame, a walking mechanism is arranged at the four corners of the bottom of the frame, a measurement control mechanism is installed on one side of the bottom of the frame, the measurement control mechanism comprises a test wheel for contacting the ground, and the flatness of the surface to be tested is determined by the bounce of the test wheel, and a pre-processing mechanism is arranged outside the measurement control mechanism, and the pre-processing mechanism is arranged at the bottom of the frame;

[0007] The pretreatment mechanism comprises a connecting frame, the top of which is mounted on the bottom of the frame through a fixing frame, and the connecting frame is provided with a scraping part on the front side of the frame on which the frame moves, and the scraping part is used to scrape the road interference by adhering to the horizontal surface to be tested when the scraping part moves.

[0008] As a further description of the above technical solution:

[0009] The measurement and control mechanism also includes a connecting rod, the test wheel is rotatably connected to the end of the connecting rod, a transmission rod is passed through the connecting rod, and both ends of the transmission rod are rotatably connected to mounting seats, the mounting seats are connected to corresponding positions on the bottom side of the frame, and an articulated block is provided at the end of the connecting rod away from the test wheel, a pressure block is connected to the top of the articulated block, a fixing piece is installed on one side of the top of the frame, the fixing piece is located above the pressure block, and the vibration of the test wheel is judged by the pressure block contacting the fixing piece.

[0010] As a further description of the above technical solution:

[0011] One side of the connecting rod is rotatably connected to a first rotating block, the top of the first rotating block is connected to a first spring, the other end of the first spring is connected to a second rotating block, and the second rotating block is connected to one side of the frame, and the test wheel is driven to fit the surface to be tested by the elastic force of the first spring.

[0012] As a further description of the above technical solution:

[0013] The bottom of the fixing piece is connected with a conducting rod, the conducting rod is slidably connected to a through hole opened at the top of the frame, and the bottom end of the conducting rod is connected with a detecting element, and the detecting element is located at the top of the pressure block.

[0014] As a further description of the above technical solution:

[0015] The pretreatment mechanism also includes a cleaning part, which is rotatably connected to the connecting frame through an axis. One side of the cleaning part axis is connected to a driving mechanism, which is installed on one side of the connecting frame. The rotating cleaning part cleans residual waste on the surface to be tested.

[0016] As a further description of the above technical solution:

[0017] The front end cross section of the scraping part is conical, and the conical surfaces on both sides of the front section of the scraping part form a water dividing surface, and the water on the area to be measured is scraped off through the conical front side of the scraping part.

[0018] As a further description of the above technical solution:

[0019] The pretreatment mechanism also includes a sealing gasket, and the bottom of the sealing gasket is rotatably connected to a roller, the top of the sealing gasket is connected to a first sliding rod, the outer sleeve of the first sliding rod is provided with a sliding sleeve, and the sliding sleeve is connected to one side of the connecting frame, the end of the first sliding rod is connected to a step block, the outer wall of the first sliding rod is provided with a second spring, the two ends of the second spring are respectively connected to the step block and the corresponding positions of one side of the sliding sleeve, the bottom of the sealing gasket is in the same horizontal position as the bottom side of the connecting frame, and the sealing gasket is attached to the side of the connecting frame to reduce the flow of accumulated water to the test area.

[0020] As a further description of the above technical solution:

[0021] A limiting mechanism is provided at one end of the transmission rod close to the mounting seat, and the limiting mechanism includes a gear, which is connected to the outside of the transmission rod, and a limiting clamp is engaged with the outside of the gear, and a tooth groove engaged with the teeth is provided on the inner side of the limiting clamp, and an adjusting screw is connected to the top of the limiting clamp, and a screw seat is provided on the outer wall of the adjusting screw, and the screw seat is connected to one side of the mounting seat at the corresponding position.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. In the present invention, the pretreatment mechanism is designed, and the pretreatment mechanism can scrape the ground debris through the front scraping part when the frame is towed by the front vehicle. At the same time, the water diversion surface on the front side of the scraping part can guide the accumulated water to the outside to discharge it, so that the surface water to be measured is discharged, and the influence of the accumulated water on the measurement accuracy is reduced when the subsequent measuring wheel passes, and the measurement effect of the road surface in rainy and snowy weather is improved, without the need to wait for the measurement environment. At the same time, the sealing gaskets on both sides of the connecting frame can fully fit the gap of the connecting frame to reduce the penetration of external water into the connecting frame. The driving mechanism can drive and control the rotation of the inner scraping part, and the rotation of the scraping part can drive the brush to sweep away some of the debris remaining after scraping and some of the accumulated water that has not been discharged, which is conducive to further improving the cleanliness of the test environment.

[0024] 2. In the present invention, through the designed measurement control mechanism, the first spring can use its own elastic force to drive the bottom first rotating block to move downward. The movement of the first rotating block can push the connecting rod and the transmission rod to rotate around the axis and drive one side of the test wheel to contact the surface to be measured. At this time, the test wheel can fully fit the surface to be measured through the elastic force of the first spring. When the frame moves and drives the test wheel to move, the test wheel is forced to drive the transmission rod to rotate upward and drive the other side of the hinge block and the pressure block to move downward. When the pressure block is separated from the detection element, the top fixing part can measure the flatness fluctuation by sensing the pressure change, and continuously record the flatness of the surface to be measured through the movement of the test wheel, which is conducive to the accurate test of the road surface flatness through the cooperation of the measured value, the pressure block and the detection element, and the influence of the test surface is reduced through the transmission of measurement data, thereby improving the measurement accuracy.

[0025] 3. In the present invention, the designed limiting mechanism can limit the rotation of the transmission rod relative to the mounting seat by rotating the adjusting screw to adjust the bottom limiting clamp and the gear limiting position, and can control the rotation of the connecting rod to keep the connecting rod in a stable state, thereby preventing the transport bouncing from affecting the reading accuracy. After the transmission rod is rotated in the opposite direction to separate from the gear, the transmission rod is placed in a rotatable state to start the detection process, thereby enabling self-locking in a non-working state through the setting of the limiting mechanism, thereby improving the safety of placement and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a road bridge flatness detection device proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the disassembled structure of a flatness detection device for a highway bridge proposed by the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of a measurement control mechanism of a flatness detection device for a highway bridge proposed by the present invention;

[0029] Figure 4 This is a schematic diagram of the lateral structure of a flatness detection device for a highway bridge proposed by the present invention;

[0030] Figure 5 The present invention proposes Figure 4 The enlarged structural diagram of part A in the middle;

[0031] Figure 6 This is a schematic diagram of the transverse structure of a road bridge flatness detection device proposed by the present invention;

[0032] Figure 7 The present invention proposes Figure 6 Schematic diagram of the enlarged structure of part B.

[0033] Legend:

[0034] 1. Frame; 2. Road surface roughness meter body; 3. Traveling mechanism; 4. Measurement control mechanism; 401. Connecting rod; 402. Test wheel; 403. Articulated block; 404. Pressure block; 405. First rotating block; 406. First spring; 407. Second rotating block; 5. Pretreatment mechanism; 501. Connecting frame; 502. Driving mechanism; 503. Fixed frame; 504. Scraping part; 505. Cleaning part; 506. Sealing pad; 507. First sliding rod; 508. Second spring; 509. Roller; 6. Transmission rod; 7. Limiting mechanism; 701. Gear; 702. Limiting clamp; 703. Adjusting screw rod; 704. Sliding sleeve; 8. Fixing piece; 9. Conducting rod; 10. Detection element; 11. Mounting seat. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 7 The present invention provides a technical solution: a flatness detection device for a highway bridge, comprising a frame 1, a road surface flatness meter body 2 is arranged on the top of the frame 1, a walking mechanism 3 is arranged at the four corners of the bottom of the frame 1, a measurement control mechanism 4 is installed on one side of the bottom of the frame 1, the measurement control mechanism 4 comprises a test wheel 402 for fitting the ground, the flatness of the surface to be tested is determined by the bounce of the test wheel 402, a pre-processing mechanism 5 is arranged outside the measurement control mechanism 4, and the pre-processing mechanism 5 is arranged at the bottom of the frame 1;

[0037] Among them, the road surface roughness meter body 2 includes a data acquisition module, that is, a digital signal processor or other microprocessor for data acquisition, as well as a corresponding data display module and a recording module, an operating system and a matching power supply system. The internal circuit structure and operation mode of the road surface roughness meter body 2 are well-known technologies in the relevant field and will not be elaborated on;

[0038] The pre-treatment mechanism 5 includes a connecting frame 501, the top of the connecting frame 501 is installed on the bottom side of the frame 1 through a fixing frame 503, and the connecting frame 501 is located at the front side of the moving side of the frame 1 and is provided with a scraping part 504, and the scraping part 504 is used to scrape the road interference by contacting the horizontal surface to be tested when moving;

[0039] The pretreatment mechanism 5 also includes a cleaning part 505, which is rotatably connected to the connecting frame 501 through an axis, and a driving mechanism 502 is connected to one side of the cleaning part 505 axis, and the driving mechanism 502 is installed on one side of the outside of the connecting frame 501. The cleaning part 505 is rotated to clean the residual waste on the surface to be tested. The front end cross-section of the scraping part 504 is conical, and the conical surfaces on both sides of the front section of the scraping part 504 form a water dividing surface, and the water on the surface to be tested is scraped off by the conical front side of the scraping part 504.

[0040] The pretreatment mechanism 5 also includes a sealing gasket 506, and the bottom of the sealing gasket 506 is rotatably connected to a roller 509, the top of the sealing gasket 506 is connected to a first slide bar 507, the outer sleeve of the first slide bar 507 is provided with a slide sleeve 704, and the slide sleeve 704 is connected to one side of the connecting frame 501, the end of the first slide bar 507 is connected to a step block, the outer wall of the first slide bar 507 is provided with a second spring 508, the two ends of the second spring 508 are respectively connected to the corresponding positions of the step block and one side of the slide sleeve 704, the bottom of the sealing gasket 506 is at the same horizontal position as the bottom side of the connecting frame 501, and the sealing gasket 506 is attached to the side of the connecting frame 501 to reduce the flow of accumulated water to the test area.

[0041] Specifically, through the designed pre-treatment mechanism 5, the pre-treatment mechanism 5 can scrape the ground debris through the front scraping part 504 when the frame 1 is towed by the front vehicle, and at the same time, the front water guide surface of the scraping part 504 can guide the accumulated water to the outside to discharge, so that the water on the surface to be measured can be discharged, which is beneficial to reduce the influence of accumulated water on the measurement accuracy when the subsequent measuring wheel passes, and is beneficial to improve the measurement effect of the road surface in rainy and snowy weather, without waiting for the measurement environment, and when the scraping part 504 scrapes the adhered debris, the driving mechanism 502 can drive and control the inner scraping part 504 to rotate, and the rotation of the scraping part 504 can drive the brush to sweep away some of the debris remaining after scraping and some of the accumulated water that has not been discharged, which is beneficial to further improve the cleanliness of the test environment;

[0042] The driving mechanism 502 may include a driving motor and a transmission gear set to ensure the rotation of the cleaning part 505 around the axis;

[0043] Furthermore, when the water is discharged, the sealing gaskets 506 located on both sides of the connecting frame 501 can fully fit into the gap of the connecting frame 501 to reduce the penetration of external water into the connecting frame 501, and through the designed first sliding bar 507 and second spring 508, the second spring 508 can use its own elastic force to make the first sliding bar 507 and the sealing gasket 506 fully fit the corresponding positions of the connecting frame 501, and through the roller 509 in the sealing gasket 506, the contact friction is reduced to extend the service life, and the assembly of the roller 509 and the sealing gasket 506 can be assembled through the slots reserved by injection molding.

[0044] See also Figure 1-Figure 3, the measurement control mechanism 4 also includes a connecting rod 401, the test wheel 402 is rotatably connected to the end of the connecting rod 401, the connecting rod 401 is penetrated by a transmission rod 6, and both ends of the transmission rod 6 are rotatably connected to a mounting seat 11, the mounting seat 11 is connected to the corresponding position on the bottom side of the frame 1, and the end of the connecting rod 401 away from the test wheel 402 is provided with a hinge block 403, and the top of the hinge block 403 is connected to a pressure block 404, and a fixing member 8 is installed on one side of the top of the frame 1, and the fixing member 8 is located above the pressure block 404. The beating of the test wheel 402 is judged by the contact of the pressure block 404 with the fixing member 8, and a first rotating block 405 is rotatably connected to one side of the connecting rod 401, and a first spring 406 is connected to the top of the first rotating block 405, and the other end of the first spring 406 is connected to a second rotating block 407, and the second rotating block 407 is connected to one side of the frame 1, and the test wheel 402 is driven to fit the surface to be tested by the elastic force of the first spring 406;

[0045] A conducting rod 9 is connected to the bottom of the fixing member 8 , and the conducting rod 9 is slidably connected to a through hole opened at the top of the frame 1 . A detection element 10 is connected to the bottom end of the conducting rod 9 , and the detection element 10 is located at the top of the pressure block 404 .

[0046] Specifically, through the designed measurement control mechanism 4, when measurement is required, after the transmission rod 6 is not limited by the limiting mechanism 7, the first spring 406 can use its own elastic force to drive the bottom first rotating block 405 to move downward, and the movement of the first rotating block 405 can push the connecting rod 401 and the transmission rod 6 to rotate around the axis and drive one side of the test wheel 402 to contact the surface to be measured. At this time, the test wheel 402 can fully fit the surface to be measured through the elastic force of the first spring 406. When the frame 1 moves the test wheel 402, the force on the test wheel 402 can drive the transmission rod 6 to rotate upward and drive the other side When the hinge block 403 and the pressure block 404 move downward and the pressure block 404 is separated from the detection element 10, the top fixing member 8 can measure the flatness fluctuation by sensing the pressure change, which is conducive to continuously recording the flatness of the surface to be tested through the movement of the test wheel 402, and is conducive to accurately testing the road surface flatness through the cooperation of the measured surface and the pressure block 404 and the detection element 10, reducing the influence of the test surface through the transmission of measurement data, improving the measurement accuracy, and the first spring 406 can control the test wheel 402 to reset after the test wheel 402 bounces, so as to ensure the continuous test effect;

[0047] Among them, in this embodiment, the fixing member 8 is pressure tested by a pressure-sensitive element, and the corresponding position of the pressure block 404 can also be detected by a laser ranging element, and the sensing element is connected to the road surface roughness meter body 2 through a wiring harness to collect corresponding data.

[0048] See also Figure 6-Figure 7A limiting mechanism 7 is provided at one end of the transmission rod 6 close to the mounting seat 11, and the limiting mechanism 7 includes a gear 701, which is connected to the outside of the transmission rod 6, and the gear 701 is engaged with a limiting clamp 702 on the outside, and the inner side of the limiting clamp 702 is provided with a tooth groove engaged with the teeth, and the top of the limiting clamp 702 is connected to an adjusting screw rod 703, and the outer wall of the adjusting screw rod 703 is sleeved with a screw rod seat, and the screw rod seat is connected to one side of the mounting seat 11 at the corresponding position.

[0049] Specifically: through the designed limiting mechanism 7, when not testing, the bottom limiting clamp 702 and the gear 701 can be limited by rotating the adjusting screw 703, and the rotation of the transmission rod 6 relative to the mounting seat 11 can be limited, so that the rotation of the connecting rod 401 can be controlled to make the connecting rod 401 in a stable state to avoid the transportation bounce affecting the reading accuracy, and after the transmission rod 6 is rotated in the opposite direction to separate it from the gear 701, the transmission rod 6 can be in a rotatable state to start the detection process, and the adjusting screw 703 can keep the limiting clamp 702 always separated from the gear 701 to avoid affecting the test effect.

[0050] Working principle: When in use, the pre-treatment mechanism 5 frame 1 is towed by the front vehicle, and the front scraping part 504 scrapes the ground debris, and the front water guide surface of the scraping part 504 guides the accumulated water to the outside to discharge, so that the water on the surface to be measured is discharged, which is beneficial to reduce the influence of accumulated water on the measurement accuracy when the subsequent measuring wheel passes, and is beneficial to improve the measurement effect of the road surface in rainy and snowy weather, without waiting for the measurement environment. When the scraping part 504 scrapes the adhered debris, the driving mechanism 502 drives the inner scraping part 504 to rotate, and the scraping part 504 rotates to drive the brush to sweep away the remaining debris and the accumulated water that has not been discharged after scraping;

[0051] When the water is discharged, the sealing pads 506 on both sides of the connecting frame 501 fully fit the gap of the connecting frame 501 to reduce the penetration of external water into the connecting frame 501. Through the designed first sliding rod 507 and second spring 508, the second spring 508 uses its own elastic force to make the first sliding rod 507 and the sealing pad 506 fully fit the corresponding position of the connecting frame 501, and the roller 509 in the sealing pad 506 reduces the contact friction to extend the service life;

[0052] When measurement is required, after the transmission rod 6 is not limited by the limiting mechanism 7, the first spring 406 uses its own elastic force to drive the bottom first rotating block 405 to move downward, and the first rotating block 405 moves to push the connecting rod 401 and the transmission rod 6 to rotate around the axis and drive one side of the test wheel 402 to contact the surface to be measured. The test wheel 402 is fully fitted to the surface to be measured by the elastic force of the first spring 406. When the frame 1 moves and the test wheel 402 walks, the test wheel 402 is forced to drive the transmission rod 6 to rotate upward and drive the hinge block 403 and the pressure block 404 on the other side to move downward. When the pressure block 404 is separated from the detection element 10, the top fixing piece 8 measures the flatness fluctuation by sensing the pressure change, which is conducive to continuously recording the flatness of the surface to be measured through the movement of the test wheel 402;

[0053] When not testing, the bottom limit clamp 702 and the gear 701 are adjusted by rotating the adjusting screw 703, and the rotation of the limit transmission rod 6 relative to the mounting seat 11 is controlled to control the rotation of the connecting rod 401, so that the connecting rod 401 is in a stable state to avoid transportation bounce affecting the reading accuracy. After the transmission rod 6 is rotated in the opposite direction to separate it from the gear 701, the transmission rod 6 is in a rotatable state to start the detection process.

[0054] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A road bridge flatness detection device, comprising a frame (1), a road surface flatness meter body (2) is arranged on the top of the frame (1), and walking mechanisms (3) are arranged at the four corners of the bottom of the frame (1), characterized in that: A measurement control mechanism (4) is installed on one side of the bottom of the frame (1), the measurement control mechanism (4) comprising a test wheel (402) for contacting the ground, and the flatness of the surface to be measured is determined by the bounce of the test wheel (402). A pre-processing mechanism (5) is provided outside the measurement control mechanism (4), and the pre-processing mechanism (5) is installed at the bottom of the frame (1); The pretreatment mechanism (5) comprises a connecting frame (501), the top of the connecting frame (501) is mounted on the bottom side of the frame (1) via a fixing frame (503), the connecting frame (501) is located at the front side of the moving side of the frame (1) and is provided with a scraping portion (504), and the scraping portion (504) is adapted to scrape away road interference by contacting the horizontal surface to be tested when the scraping portion (504) moves. The pretreatment mechanism (5) further includes a cleaning unit (505), the cleaning unit (505) being rotatably connected to the connecting frame (501) via a shaft, one side of the cleaning unit (505) being connected to a driving mechanism (502), the driving mechanism (502) being mounted on one side of the outside of the connecting frame (501), and the cleaning unit (505) being rotated to clean the residual waste on the surface to be tested; The front end cross-section of the scraping portion (504) is conical, and the conical surfaces on both sides of the front section of the scraping portion (504) form a water dividing surface, and the water on the surface to be measured is scraped off by the conical front side of the scraping portion (504); The pretreatment mechanism (5) also includes a sealing pad (506), and the bottom of the sealing pad (506) is rotatably connected to a roller (509), the top of the sealing pad (506) is connected to a first sliding rod (507), the outer sleeve of the first sliding rod (507) is provided with a sliding sleeve (704), and the sliding sleeve (704) is connected to one side of the connecting frame (501), the end of the first sliding rod (507) is connected to a step block, the outer wall of the first sliding rod (507) is provided with a second spring (508), and the two ends of the second spring (508) are respectively connected to the corresponding positions of the step block and one side of the sliding sleeve (704), the bottom of the sealing pad (506) and the bottom side of the connecting frame (501) are at the same horizontal position, and the sealing pad (506) is attached to the side of the connecting frame (501) to reduce the flow of accumulated water to the test area.

2. A road bridge flatness detection device according to claim 1, characterized in that: The measurement control mechanism (4) further comprises a connecting rod (401), the test wheel (402) being rotatably connected to the end of the connecting rod (401), the connecting rod (401) being provided with a transmission rod (6), and both ends of the transmission rod (6) being rotatably connected to mounting seats (11), the mounting seats (11) being connected to corresponding positions on the bottom side of the frame (1), a hinge block (403) being provided at one end of the connecting rod (401) away from the test wheel (402), a pressure block (404) being connected to the top of the hinge block (403), a fixing member (8) being installed on one side of the top of the frame (1), the fixing member (8) being located above the pressure block (404), and the vibration of the test wheel (402) being determined by the pressure block (404) contacting the fixing member (8).

3. A road bridge flatness detection device according to claim 2, characterized in that: One side of the connecting rod (401) is rotatably connected to a first rotating block (405), a top of the first rotating block (405) is connected to a first spring (406), the other end of the first spring (406) is connected to a second rotating block (407), and the second rotating block (407) is connected to one side of the frame (1), and the test wheel (402) is driven to fit the surface to be tested by the elastic force of the first spring (406).

4. A road bridge flatness detection device according to claim 2, characterized in that: The bottom of the fixing member (8) is connected to a conducting rod (9), the conducting rod (9) is slidably connected to a through hole opened at the top of the frame (1), and the bottom end of the conducting rod (9) is connected to a detection element (10), and the detection element (10) is located at the top of the pressure block (404).

5. The road bridge flatness detection device according to claim 2, characterized in that: A limiting mechanism (7) is provided at one end of the transmission rod (6) close to the mounting seat (11), the limiting mechanism (7) comprising a gear (701), the gear (701) being connected to the outside of the transmission rod (6), and the gear (701) being meshed with a limiting clamp (702) on the outside, and a tooth groove meshing with teeth is provided on the inside of the limiting clamp (702), and an adjusting screw rod (703) is connected to the top of the limiting clamp (702), and a screw rod seat is sleeved on the outer wall of the adjusting screw rod (703), and the screw rod seat is connected to one side of the mounting seat (11) at a corresponding position.

Images