A flatness detection device for road and bridge engineering construction

Abstract

The invention discloses a flatness detection device for road and bridge engineering construction, and the invention relates to the technical field of flatness detection. The balance wheel in the flatness measurement assembly contacts the road surface, and the uneven road surface causes different angle changes of the long connecting block rods on the two flatness measurement assemblies. The different angle changes of the long connecting block rods cause different positions of the lower contact parts that contact the long connecting block rods, and the corresponding length heights on the upper guide rods are inconsistent, which affects the different measurement values ​​of the level meter on the upper side of the upper guide rods. The measurement is carried out to ensure the measurement accuracy, and the length of the bridge does not affect the measurement.

Description

Technical Field

[0001] The invention relates to the technical field of flatness detection, and in particular to a flatness detection device for road and bridge engineering construction. Background Art

[0002] After searching, CN117553712B discloses a bridge steel formwork flatness detection device, which relates to the field of flatness detection technology, including a bracket, two groups of brackets are symmetrically arranged, horizontal rollers are arranged on the bracket, guide rollers are arranged on the edges of the horizontal rollers, steel formwork bodies are evenly placed on the brackets, driving slide rails are arranged in the brackets, a conveying mechanism is arranged between the two groups of brackets, the conveying mechanism and the driving slide rails are slidably installed, and a detection mechanism is also arranged on the bracket; the detection mechanism includes a spotlight and a reflective film arranged inside the detection cover, the reflective film is pasted on the surface of the steel formwork body by an adhesive component, and the reflected light is captured in combination with the photoreceptor on the receiving plate. When the photoreceptor senses the light, it indicates that the flatness of the steel formwork body at this position is unqualified. The above structure can realize rapid detection of a large area of ​​the steel formwork body, and the uneven parts are marked in combination with the marking mechanism.

[0003] However, there are certain defects. During the bridge construction process, the length of the bridge has a certain impact on the flatness detection, and the steel plate needs to be measured during construction, which affects the subsequent steps. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a flatness detection device for road and bridge engineering construction, which solves the problems raised by the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A flatness detection device for road and bridge engineering construction, comprising a main connecting rod, two mobile measuring assemblies are fixedly arranged on the surface of the main connecting rod, and two flatness measuring assemblies are slidably arranged on the surface of the main connecting rod, and the two flatness measuring assemblies are located in the middle of the two mobile measuring assemblies;

[0006] The leveling measurement assembly includes an outer fixed plate slidably arranged on a main body connecting rod, two upper pulleys are rotatably arranged on the surface of the outer fixed plate, and the two upper pulleys are located at the upper and lower sides of the main body connecting rod, a lower short connecting rod is fixedly arranged on the lower side of the outer fixed plate, a connecting rotating rod is rotatably arranged on the lower side of the lower short connecting rod, one end of the connecting rotating rod away from the lower short connecting rod is rotatably connected to a long connecting block rod, a tension spring is connected to the middle end of the long connecting block rod, the other end of the tension spring is connected to a fixed hanging rod, the fixed hanging rod is fixedly arranged on the main body connecting rod, the A fixed insert is fixedly provided on the surface of the main connecting rod, an upper guide rod is slidably provided inside the fixed insert, a lower contact portion is fixedly provided on the bottom of the fixed insert, the lower contact portion is in contact with the surface of the long connecting block rod, and the balance wheel in the leveling measurement assembly is in contact with the road surface. The uneven road surface causes different angle changes of the long connecting block rods on the two leveling measurement assemblies. The different angle changes of the long connecting block rods cause different positions of the lower contact portion in contact with the long connecting block rod, and the corresponding length heights on the upper guide rod are inconsistent, which affects the different measurement values ​​of the spirit level on the upper side of the upper guide rod, and measurement is performed.

[0007] Preferably, a balance wheel is rotatably arranged on one end of the surface of the long connecting block rod away from the lower contact portion, and the long connecting block rod is inclined relative to the main connecting rod.

[0008] Preferably, two leveling measurement assemblies are provided on the main connecting rod, and a level is connected between the top ends of the two upper guide rods.

[0009] Preferably, the mobile measuring assembly includes a fixed block, fixed connecting rods are fixedly provided at the four corners of the fixed block, a lower supporting fixed block is fixedly provided at the bottom of the fixed block through the fixed connecting rod, a fastening screw is threadedly provided on the upper side of the fixed block, a fixed long block is fixedly provided on the lower side of the lower supporting fixed block, a swing arm is rotatably provided on the surface of the fixed long block, a roller fixed block is rotatably provided on one side of the swing arm, a roller member is rotatably provided on the end of the roller fixed block away from the fixed long block, a roller is rotatably provided on the end of the swing arm away from the roller fixed block, a baffle is fixedly provided on the lower side of the swing arm, and the baffle and the roller fixed block A fixed long rod is set through it, and external fixing nuts are set at both ends of the fixed long rod. A spring part is sleeved on the outer surface of the fixed long rod between the roller fixing block and the baffle. When the detected bridge road surface is uneven, the contact between the roller part and the roller and the ground will have an arc, so that the basic distance between the baffle and the roller fixing block changes, thereby changing the length of the spring part on the fixed long rod, reflecting the smooth shape of the bridge road surface. At the same time, by changing the position distance of the fixed block on the main connecting rod, the relative position of the mobile measuring component as a whole on the main connecting rod is changed, and the relative position of the two mobile measuring components is changed, which is suitable for detecting the distance of bridge roads of different lengths.

[0010] Preferably, the balance distance between the baffle and the roller fixing block is greater than the width of the fixed length block, and the downward extension length of the baffle is less than the diameter of the roller.

[0011] Preferably, a second connecting rod is fixedly provided on the roller fixing block, rotating shaft rods are rotatably provided at both ends of the second connecting rod, a first connecting rod is rotatably provided on the two ends of the rotating shaft rods, an inner bracket connecting rod is rotatably provided on the middle section of the second connecting rod and the first connecting rod, and a traction connecting rod is rotatably provided on the outer end of the inner bracket connecting rod, the device as a whole is connected, and the whole is transported and tested by using a mobile carrying platform, the traction connecting rod on the traction assembly is mounted on the mobile carrying platform, and the angle swing of the traction connecting rod drives the inner bracket connecting rod to swing, the inner bracket connecting rod is rotatably provided on the first connecting rod and the second connecting rod, and the second connecting rod is fixed on the roller fixing block, and the swing of the inner bracket connecting rod drives the angle of the rotating shaft rod to change, thereby changing the angle of the two roller parts, driving the subsequent device to move.

[0012] Preferably, the shaft ends of the two rotating shaft rods are fixedly connected to the shaft ends of the roller member.

[0013] Preferably, the method comprises the following steps:

[0014] Step S1: Connect the device as a whole, use the mobile carrier platform to carry out the whole transport inspection, mount the traction connecting rod on the traction assembly on the mobile carrier platform, the angular swing of the traction connecting rod drives the inner bracket connecting rod to swing, the inner bracket connecting rod is rotatably arranged on the first connecting rod and the second connecting rod, the second connecting rod is fixed on the roller fixing block, and the swing of the inner bracket connecting rod drives the angle of the rotating shaft rod to change, thereby causing the angle of the two roller parts to change, driving the subsequent device to move;

[0015] Step S2: When the device is moved as a whole, if the detected bridge road surface is uneven, the contact between the roller member and the roller and the ground will have an arc, so that the basic distance between the baffle and the roller fixing block changes, thereby changing the length of the spring member on the fixed long rod, reflecting the smooth shape of the bridge road surface. At the same time, by changing the position distance of the fixing block on the main connecting rod, the relative position of the mobile measuring component as a whole on the main connecting rod is changed, and the relative position of the two mobile measuring components is changed, which is suitable for detecting the distance of bridge roads of different lengths;

[0016] Step S3: When moving, the balance wheel in the leveling measurement assembly contacts the road surface. The uneven road surface causes different angle changes of the long connecting block rods on the two leveling measurement assemblies. The different angle changes of the long connecting block rods cause different positions of the lower contact parts in contact with the long connecting block rods. The corresponding length heights on the upper guide rod are inconsistent, which affects the different measurement values ​​of the spirit level on the upper side of the upper guide rod, and measurement is performed.

[0017] Beneficial Effects The present invention provides a flatness detection device for road and bridge engineering construction. Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. A flatness detection device for road and bridge engineering construction, which contacts the road surface through the balance wheel in the flatness measuring component. The uneven road surface causes different angle changes of the long connecting block rods on the two flatness measuring components. The different angle changes of the long connecting block rods cause different positions of the lower contact parts in contact with the long connecting block rods, and the corresponding length heights on the upper guide rod are inconsistent, which affects the different measurement values ​​of the spirit level on the upper side of the upper guide rod. The measurement is performed to ensure the measurement accuracy, and the length of the bridge does not affect the measurement.

[0019] 2. A flatness detection device for road and bridge engineering construction. When the detected bridge road surface is uneven, the contact between the roller parts and the roller and the ground will have an arc, which changes the basic distance between the baffle and the roller fixing block, thereby changing the length of the spring part on the fixed long rod, reflecting the flat shape of the bridge road surface. At the same time, by changing the position distance of the fixed block on the main connecting rod, the relative position of the mobile measuring component as a whole on the main connecting rod is changed, and the relative position of the two mobile measuring components is changed, which is suitable for detecting the distance of bridge road surfaces of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a front view of the structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the rear structure of the present invention;

[0023] Figure 4 For the present invention Figure 1 Schematic diagram of the structure at A in the middle;

[0024] Figure 5 For the present invention Figure 2 Schematic diagram of the structure at B in the middle;

[0025] Figure 6 For the present invention Figure 3 Schematic diagram of the structure at point C in the middle.

[0026] In the figure: 1. traction assembly; 11. traction connecting rod; 12. inner bracket connecting rod; 13. first connecting rod; 14. rotating shaft rod; 15. second connecting rod; 2. mobile measuring assembly; 21. fixed block; 22. fastening screw; 23. lower support fixed block; 24. fixed long block; 25. swing arm; 26. roller fixed block; 27. roller member; 28. roller; 29. ​​spring member; 210. fixed long rod; 211. baffle; 212. external fixing nut; 3. leveling measuring assembly; 31. fixed insert; 32. upper guide rod; 33. fixed hanging rod; 34. lower contact part; 35. long connecting block rod; 36. tension spring; 37. upper pulley; 38. external fixing plate; 39. lower short connecting rod; 310. connecting rotating rod; 311. balance wheel; 4. main connecting rod. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-6 The present invention provides a technical solution: a flatness detection device for road and bridge engineering construction, comprising a main connecting rod 4, on the surface of which two mobile measuring components 2 are fixedly arranged, and on the surface of which two flatness measuring components 3 are slidably arranged, and the two flatness measuring components 3 are located in the middle of the two mobile measuring components 2;

[0029] The leveling measurement assembly 3 includes an outer fixed plate 38 slidably arranged on the main connecting rod 4, two upper pulleys 37 are rotatably arranged on the surface of the outer fixed plate 38, and the two upper pulleys 37 are located at the upper and lower sides of the main connecting rod 4, a lower short connecting rod 39 is fixedly arranged on the lower side of the outer fixed plate 38, a connecting rotating rod 310 is rotatably arranged on the lower side of the lower short connecting rod 39, one end of the connecting rotating rod 310 away from the lower short connecting rod 39 is rotatably connected to the long connecting block rod 35, a tension spring 36 is connected to the middle end of the long connecting block rod 35, the other end of the tension spring 36 is connected to the fixed hanging rod 33, the fixed hanging rod 33 is fixedly arranged on the main connecting rod 4, a fixed insert 31 is fixedly arranged on the surface of the main connecting rod 4, an upper guide rod 32 is slidably arranged inside the fixed insert 31, and the fixed insert 3 1 is fixedly provided with a lower contact portion 34 at the bottom, and the lower contact portion 34 contacts the surface of the long connecting block rod 35. The balance wheel 311 in the leveling measurement component 3 contacts the road surface. The uneven road surface causes different angle changes of the long connecting block rods 35 on the two leveling measurement components 3. The different angle changes of the long connecting block rods 35 cause different positions of the lower contact portion 34 in contact with the long connecting block rod 35, and the corresponding length heights on the upper guide rod 32 are inconsistent, which affects the different measurement values ​​of the level meter on the upper side of the upper guide rod 32. When measuring, a balance wheel 311 is rotatably provided on the end of the surface of the long connecting block rod 35 away from the lower contact portion 34, and the long connecting block rod 35 is tilted relative to the main connecting rod 4. The leveling measurement component 3 is provided with two on the main connecting rod 4, and a level meter is connected between the top ends of the two upper guide rods 32.

[0030] The mobile measuring assembly 2 includes a fixed block 21, and fixed connecting rods are fixedly arranged at the four corners of the fixed block 21. A lower supporting fixed block 23 is fixedly arranged at the bottom of the fixed block 21 through a fixed connecting rod. A fastening screw 22 is threadedly arranged on the upper side of the fixed block 21, and a fixed long block 24 is fixedly arranged on the lower side of the lower supporting fixed block 23. A swing arm 25 is rotatably arranged on the surface of the fixed long block 24, and a roller fixed block 26 is rotatably arranged on one side of the swing arm 25. A roller member 27 is rotatably arranged on the end of the roller fixed block 26 away from the fixed long block 24, and a roller 28 is rotatably arranged on the end of the swing arm 25 away from the roller fixed block 26. A baffle 211 is fixedly arranged on the lower side of the swing arm 25, and the baffle 211 and the roller fixed block 26 is provided with a fixed long rod 210 running through it, and external fixing nuts 212 are provided at both ends of the fixed long rod 210. A spring member 29 is sleeved between the roller fixing block 26 and the baffle 211 and on the outer surface of the fixed long rod 210. When the detected bridge road surface is uneven, the contact between the roller member 27 and the roller 28 with the ground will have an arc, so that the basic distance between the baffle 211 and the roller fixing block 26 changes, thereby changing the length of the spring member 29 on the fixed long rod 210, reflecting the smooth shape of the bridge road surface. At the same time, by changing the position distance of the fixed block 21 on the main connecting rod 4, the relative position of the mobile measuring component 2 as a whole on the main connecting rod 4 is changed, and the relative position of the two mobile measuring components 2 is changed, which is suitable for detecting the distance of bridge roads of different lengths.

[0031] The balance distance between the baffle plate 211 and the roller fixing block 26 is greater than the width of the fixed long block 24 , and the downward extension length of the baffle plate 211 is less than the diameter of the roller 28 .

[0032] A second connecting rod 15 is fixedly provided on the roller fixing block 26, and rotating shaft rods 14 are rotatably provided at both ends of the second connecting rod 15, and a first connecting rod 13 is rotatably provided on the two ends of the rotating shaft rods 14, and an inner bracket connecting rod 12 is rotatably provided on the middle section of the second connecting rod 15 and the first connecting rod 13, and a traction connecting rod 11 is rotatably provided on the outer end of the inner bracket connecting rod 12, and the device is connected as a whole, and the whole is transported and tested by using a mobile carrying platform, and the traction connecting rod 11 on the traction assembly 1 is mounted on the mobile carrying platform, and the angle swing of the traction connecting rod 11 drives the inner bracket connecting rod 12 to swing, and the inner bracket connecting rod 12 is rotatably provided on the first connecting rod 13 and the second connecting rod 15, and the second connecting rod 15 is fixed on the roller fixing block 26, and due to the swing of the inner bracket connecting rod 12, the angle of the rotating shaft rod 14 is driven to change, thereby changing the angle of the two roller members 27, and driving the subsequent device to move.

[0033] The shaft ends of the two rotating shaft rods 14 are fixedly connected to the shaft ends of the roller members 27 .

[0034] The steps include:

[0035] Step S1: Connect the device as a whole, use the mobile carrier platform to carry out the whole transport inspection, mount the traction connecting rod 11 on the traction assembly 1 on the mobile carrier platform, the angular swing of the traction connecting rod 11 drives the inner bracket connecting rod 12 to swing, the inner bracket connecting rod 12 is rotatably arranged on the first connecting rod 13 and the second connecting rod 15, the second connecting rod 15 is fixed on the roller fixing block 26, due to the swing of the inner bracket connecting rod 12, the angle of the rotating shaft rod 14 is driven to change, thereby changing the angle of the two roller members 27, driving the subsequent device to move;

[0036] Step S2: When the device is moved as a whole, if the detected bridge road surface is uneven, the contact between the roller member 27 and the roller 28 and the ground will have an arc, so that the basic distance between the baffle 211 and the roller fixing block 26 changes, thereby changing the length of the spring member 29 on the fixed long rod 210, reflecting the smooth shape of the bridge road surface. At the same time, by changing the position distance of the fixing block 21 on the main connecting rod 4, the relative position of the mobile measuring component 2 as a whole on the main connecting rod 4 is changed, and the relative position of the two mobile measuring components 2 is changed, which is suitable for detecting the distance of bridge roads of different lengths;

[0037] Step S3: When moving, the balance wheel 311 in the leveling measurement component 3 contacts the road surface. The uneven road surface causes different angle changes of the long connecting block rods 35 on the two leveling measurement components 3. The different angle changes of the long connecting block rods 35 cause different positions of the lower contact parts 34 in contact with the long connecting block rods 35. The corresponding length heights on the upper guide rod 32 are inconsistent, which affects the different measurement values ​​of the spirit level on the upper side of the upper guide rod 32, and measurement is performed.

[0038] When in use, the device is connected as a whole, and the mobile carrier platform is used to carry and test the whole device. The traction connecting rod 11 on the traction component 1 is mounted on the mobile carrier platform. The angle swing of the traction connecting rod 11 drives the inner bracket connecting rod 12 to swing. The inner bracket connecting rod 12 is rotatably arranged on the first connecting rod 13 and the second connecting rod 15. The second connecting rod 15 is fixed on the roller fixing block 26. Due to the swing of the inner bracket connecting rod 12, the angle of the rotating shaft rod 14 is driven to change, thereby changing the angle of the two roller members 27, driving the subsequent device to move. When the device is moved as a whole, if the road surface of the bridge being tested is uneven, the contact between the roller member 27 and the roller 28 and the ground will have an arc, so that the basic distance between the baffle 211 and the roller fixing block 26 changes, thereby The length of the spring member 29 on the fixed long rod 210 is changed to reflect the smooth shape of the bridge pavement. At the same time, by changing the position distance of the fixed block 21 on the main connecting rod 4, the relative position of the mobile measuring component 2 as a whole on the main connecting rod 4 is changed. The relative position of the two mobile measuring components 2 is changed, which is suitable for detecting bridge pavement distances of different lengths. When moving, the balance wheel 311 in the leveling measuring component 3 contacts the pavement surface. The uneven pavement causes different angle changes of the long connecting block rods 35 on the two leveling measuring components 3. The different angle changes of the long connecting block rods 35 cause different positions of the lower contact parts 34 in contact with the long connecting block rods 35, and the corresponding length heights on the upper guide rod 32 are inconsistent, which affects the different measurement values ​​of the level meter on the upper side of the upper guide rod 32, and measurement is performed.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flatness detection device for road and bridge engineering construction, comprising a main connecting rod (4), characterized in that: Two mobile measuring assemblies (2) are fixedly arranged on the surface of the main connecting rod (4), and two flattening measuring assemblies (3) are slidably arranged on the surface of the main connecting rod (4), and the two flattening measuring assemblies (3) are located in the middle of the two mobile measuring assemblies (2); The leveling measurement assembly (3) comprises an outer fixed plate (38) slidably arranged on the main connecting rod (4); two upper pulleys (37) are rotatably arranged on the surface of the outer fixed plate (38); and the two upper pulleys (37) are located at the upper and lower sides of the main connecting rod (4); a lower short connecting rod (39) is fixedly arranged on the lower side of the outer fixed plate (38); a connecting rotating rod (310) is rotatably arranged on the lower side of the lower short connecting rod (39); and an end of the connecting rotating rod (310) away from the lower short connecting rod (39) is disposed between the long connecting block rod (35). The two connecting rods (35) are connected to each other in a rotational manner, a tension spring (36) is connected to the middle end of the long connecting rod (35), the other end of the tension spring (36) is connected to a fixed hanging rod (33), the fixed hanging rod (33) is fixedly arranged on the main connecting rod (4), a fixed insert (31) is fixedly arranged on the surface of the main connecting rod (4), an upper guide rod (32) is slidably arranged inside the fixed insert (31), a lower contact portion (34) is fixedly arranged on the bottom of the fixed insert (31), and the lower contact portion (34) contacts the surface of the long connecting rod (35); The mobile measuring assembly (2) comprises a fixed block (21), fixed connecting rods are fixedly arranged at the four corners of the fixed block (21), a lower support fixed block (23) is fixedly arranged at the bottom of the fixed block (21) via the fixed connecting rods, a fastening screw (22) is threadedly arranged on the upper side of the fixed block (21), a fixed long block (24) is fixedly arranged on the lower side of the lower support fixed block (23), a swing arm (25) is rotatably arranged on the surface of the fixed long block (24), a roller fixed block (26) is rotatably arranged on one side of the swing arm (25), and the roller fixed block (26) is remotely movable. A roller member (27) is rotatably provided on one end away from the fixed long block (24); a roller (28) is rotatably provided on one end of the swing arm (25) away from the roller fixing block (26); a baffle (211) is fixedly provided on the lower side of the swing arm (25); a fixed long rod (210) is provided between the baffle (211) and the roller fixing block (26); external fixing nuts (212) are provided at both ends of the fixed long rod (210); and a spring member (29) is sleeved on the outer surface of the fixed long rod (210) and between the roller fixing block (26) and the baffle (211).

2. The flatness detection device for road and bridge engineering construction according to claim 1 is characterized in that: A balance wheel (311) is rotatably arranged on one end of the surface of the long connecting block rod (35) away from the lower contact portion (34), and the long connecting block rod (35) is arranged in an inclined position relative to the main connecting rod (4).

3. The flatness detection device for road and bridge engineering construction according to claim 2 is characterized in that: Two leveling measurement assemblies (3) are arranged on the main connecting rod (4), and a level is connected between the top ends of the two upper guide rods (32).

4. The flatness detection device for road and bridge engineering construction according to claim 3 is characterized in that: The balance distance between the baffle plate (211) and the roller fixing block (26) is greater than the width of the fixed long block (24), and the downward extension length of the baffle plate (211) is less than the diameter of the roller (28).

5. The flatness detection device for road and bridge engineering construction according to claim 4 is characterized in that: A second connecting rod (15) is fixedly arranged on the roller fixing block (26); rotating shaft rods (14) are rotatably arranged at both ends of the second connecting rod (15); a first connecting rod (13) is rotatably arranged on the ends of the two rotating shaft rods (14); an inner support connecting rod (12) is rotatably arranged on the middle section between the second connecting rod (15) and the first connecting rod (13); and a traction connecting rod (11) is rotatably arranged on the outer end of the inner support connecting rod (12).

6. A flatness detection device for road and bridge engineering construction according to claim 5, characterized in that: The shaft ends of the two rotating shaft rods (14) are fixedly connected to the shaft ends of the roller members (27).

7. A flatness detection device for road and bridge engineering construction according to any one of claim 6, characterized in that: The steps include: Step S1: the device is connected as a whole, and the whole is transported and tested using a mobile transport platform. The traction connecting rod (11) on the traction assembly (1) is mounted on the mobile transport platform. The angular swing of the traction connecting rod (11) drives the inner support connecting rod (12) to swing. The inner support connecting rod (12) is rotatably arranged on the first connecting rod (13) and the second connecting rod (15). The second connecting rod (15) is fixed on the roller fixing block (26). As the inner support connecting rod (12) swings, the angle of the rotating shaft rod (14) changes, thereby causing the angles of the two roller components (27) to change, driving the subsequent device to move. Step S2: When the device as a whole moves, if the detected bridge road surface is uneven, the contact between the roller member (27) and the roller (28) with the ground will have an arc, so that the basic distance between the baffle (211) and the roller fixing block (26) changes, thereby changing the length of the spring member (29) on the fixed long rod (210), reflecting the smooth shape of the bridge road surface. At the same time, by changing the position distance of the fixing block (21) on the main connecting rod (4), the relative position of the mobile measuring component (2) as a whole on the main connecting rod (4) is changed, and the relative position of the two mobile measuring components (2) is changed, which is suitable for detecting the distance of bridge road surfaces of different lengths; Step S3: When moving, the balance wheel (311) in the leveling measurement assembly (3) contacts the road surface. The uneven road surface causes different angle changes of the long connecting block rods (35) on the two leveling measurement assemblies (3). The different angle changes of the long connecting block rods (35) cause different positions of the lower contact portion (34) in contact with the long connecting block rod (35). The corresponding length heights on the upper guide rod (32) are inconsistent, which affects the different measurement values ​​of the level meter on the upper side of the upper guide rod (32), and measurement is performed.

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