Efficient detection equipment for road construction

Abstract

The invention relates to the field of construction pavement detection, in particular to efficient detection equipment for road construction, which comprises a mobile vehicle body, the mobile vehicle body is detachably connected with a detection component, and the detection component is provided with a front laser sensor and a rear laser sensor. The front laser sensor is located between two wheels, farthest from the traction vehicle, of the moving vehicle body in the same group, the rear laser sensor is located behind the front laser sensor in the advancing direction of the moving vehicle body, and the distance s between the rear laser sensor and the front laser sensor is larger than 3 m; when the forward moving distance of the moving vehicle body is x times of a, the front laser sensor detects and obtains a distance value L front x, the rear laser sensor detects and obtains a distance value L rear x, the deflection value loxx at the starting point distance a # imgabs0 # x is equal to L front x-L rear (x + s / a), x and s / a are integers, a # imgabs1 # xmax is larger than or equal to s, and x + s / a is smaller than or equal to xmax, so that in the process that the moving vehicle body is pulled to move forwards, the deflection value L front x is larger than or equal to L rear x, and the deflection value L rear x is smaller than or equal to x; a part of point positions on a moving path can be selected for deflection detection, and the detection efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of construction road surface detection, and in particular to a high-efficiency detection device for road construction. Background Art

[0002] During the road construction process, it is necessary to conduct corresponding tests on the completed road surface, such as deflection test and compaction test, to ensure that the quality of the road surface is up to standard, so as to minimize the problems in the subsequent road construction. Deflection test is the load value generated by the road surface under the action of load, such as vehicles, and is generally tested using a Beckmann beam.

[0003] In the existing detection process, it is necessary to put the probe of the front lever into the gap between the two tires of the vehicle, and then set a dial indicator at the end of the rear lever, and make the detection end of the dial indicator abut against the upper part of the rear lever, so that when the vehicle moves forward and causes a slight deflection of the road surface, the reading of the dial indicator becomes larger, and the maximum value is recorded. Then, when the distance between the vehicle and the front lever is larger than the deflection influence radius, that is, more than 3m, the road surface rebounds and causes the dial indicator reading to decrease, and the reading after stabilization is recorded. The difference between the front and rear readings is the deflection value. For example, a Beckman beam with a publication number of CN215366700U, except that the dial indicator is replaced by a laser transmitter.

[0004] With respect to the above-mentioned related technologies, the beam frame needs to be placed at a specified position during each detection process, and the vehicle needs to cooperate, so the efficiency of road deflection detection is low. Summary of the invention

[0005] In order to improve the efficiency of road deflection detection, the present application provides a high-efficiency detection equipment for road construction.

[0006] The present application provides a high-efficiency detection equipment for road construction that adopts the following technical solution.

[0007] A high-efficiency detection device for road construction, comprising a mobile body that can be towed forward by a vehicle and can adjust the load, the mobile body being detachably connected to a detection component, the detection component being provided with a front laser sensor and a rear laser sensor for detecting the distance between each of the components and the road surface, the front laser sensor being located between two wheels of the same group of the mobile body that are farthest from the towing vehicle, the rear laser sensor being located behind the front laser sensor in the forward direction of the mobile body, and the distance s between the rear laser sensor and the front laser sensor being greater than 3m; When the moving vehicle moves forward by x times of a, the front laser sensor detects and obtains the distance value L 前x And then the laser sensor detects and obtains the distance value L 后x , then it is located at a distance a from the starting point The deflection value lo at xx =L 前x -L 后 , x and s / a are both integers, a x max ≥s,x+s / a≤x max .

[0008] By adopting the above technical solution, when the mobile body is towed forward by any vehicle, each time it moves forward a distance, the front laser sensor and the rear laser sensor will detect to obtain the corresponding distance value, and then calculate the distance at the starting point a. The deflection value at x can be used to more efficiently obtain the deflection values ​​of several points on the road surface, so as to more quickly perform deflection detection on the completed road surface, so as to start subsequent road construction work more quickly, which is helpful to improve the overall progress of road construction.

[0009] Optionally, the detection component includes a height-adjusting rod provided on the mobile vehicle body, a fixed rod detachably connected to the height-adjusting rod, a front sliding rod and a rear sliding rod slidably connected to both ends of the fixed rod in a one-to-one manner, and a driving electric cylinder provided on the fixed rod to drive the front sliding rod and the rear sliding rod to move so that the front laser sensor and the rear laser sensor are closer or farther away, and the straight lines in which the moving directions of the front sliding rod and the rear sliding rod are located are the same.

[0010] By adopting the above technical solution, when the distance a between two adjacent deflection detection points changes, in order to satisfy the condition that s / a is an integer, it is necessary to adjust the distance s between the front laser sensor and the rear laser sensor so as to better meet the detection requirements of different road surfaces or different periods.

[0011] Optionally, the height-adjusting rod includes a body rod detachably connected to the mobile body and a vertical rod slidably connected to the body rod. A height-adjusting electric cylinder for driving the vertical rod to move is detachably connected to the body rod. The moving direction of the vertical rod is perpendicular to the moving direction of the front sliding rod so that the height of the vertical rod changes.

[0012] By adopting the above technical solution, the height values ​​of the front laser sensor and the rear laser sensor can be changed so that when deflection detection is not performed, the front laser sensor and the rear laser sensor are away from the road surface and are not easily damaged by bumps. When deflection detection is performed, the front laser sensor and the rear laser sensor can be close to the road surface to reduce the interference caused by floating debris in the air.

[0013] Optionally, the front sliding bar and the rear sliding bar are both detachably connected with ranging sensors, and the fixed rod is detachably connected with a detection piece at a position corresponding to the height adjustment rod. The two ranging sensors detect the distance value between each of them and the detection piece to obtain the distance between the front laser sensor and the rear laser sensor.

[0014] By adopting the above technical solution, the distance between the front laser sensor and the rear laser sensor can be accurately controlled.

[0015] Optionally, the front sliding bar and the rear sliding bar are both provided with a rod inclination sensor, and the mobile body is provided with a body inclination sensor; during deflection detection, the inclination angles and inclination directions detected by the two rod inclination sensors and the body inclination sensor remain consistent.

[0016] By adopting the above technical solution, it is ensured that the positions of the front laser sensor and the rear laser sensor are not easily skewed significantly relative to the moving vehicle body, so as to improve the accuracy of deflection detection.

[0017] Optionally, the height-adjusting rod is rotatably connected to the mobile body, the direction of the rotation axis of the height-adjusting rod is perpendicular to the moving direction of the front sliding rod, and the mobile body is detachably connected to a body rod motor that drives the height-adjusting rod to rotate; before deflection detection, the body rod motor operates so that the front laser sensor and the rear laser sensor can be located outside the deflection influence radius of the mobile body after they move away from each other.

[0018] By adopting the above technical solution, before starting the deflection detection, it is first detected whether the planes where the front laser sensor and the rear laser sensor are located are parallel to the road surface to ensure the accuracy of the subsequent deflection detection.

[0019] Optionally, when the front laser sensor and the rear laser sensor are moved out of the deflection influence radius of the mobile vehicle body, the distances between the front laser sensor and the rear laser sensor and the rotation axis of the height adjustment rod are kept equal, and then the equal height test is started; At the beginning of the equal height test, the front laser sensor detects and obtains the distance value b1 and the rear laser sensor detects and obtains the distance value c1, then the height rod is rotated 180°, the front laser sensor detects and obtains the distance value b2 again and the rear laser sensor detects and obtains the distance value c2 again, then the height error E1=|b1-c2|, the height error E2=|b2-c1|, when E1 and E2 are both less than the error threshold, the deflection detection starts.

[0020] By adopting the above technical solution, the front laser sensor and the rear laser sensor detect the same position on the road surface, and perform detection at two different points to ensure that before the deflection detection begins, the detection values ​​of the front laser sensor and the rear laser sensor are not prone to other errors, so as to improve the accuracy of the deflection detection.

[0021] Optionally, the mobile body is detachably connected to a front frame at a side of the front laser sensor facing away from the rear laser sensor, and the front frame is detachably connected to a plurality of water mist nozzles for spraying water mist toward the road surface in the forward moving direction of the mobile body.

[0022] By adopting the above technical solution, water mist is sprayed on the road surface that the front laser sensor is about to pass, so as to minimize the impact of dust on the distance values ​​detected by the front laser sensor and the rear laser sensor, which helps to improve the accuracy of deflection detection.

[0023] Optionally, the mobile body is located on the side of the front laser sensor facing away from the rear laser sensor and is detachably connected to a push plate electric cylinder, the push plate electric cylinder power rod is detachably connected to a connecting block, the connecting block is detachably connected to a V-shaped push plate that can be close to the road surface, and the larger the distance between the push plates, the closer the two sides are to the front laser sensor.

[0024] By adopting the above technical solution, gravel or adhered debris that may exist on the road surface that the front laser sensor is about to pass through are pushed forward, so that the front laser sensor is not easily bumped when it is close to the road surface, thereby reducing the possibility of a large deviation in the detection value of the front laser sensor, and also preventing the service life of the front laser sensor from being reduced too much.

[0025] Optionally, the connecting block includes a rod end block detachably connected to the power rod of the push plate electric cylinder and a plate slidably connected to the rod end block, the sliding direction of the plate is consistent with the forward movement direction of the mobile body, and a pressure relief spring is provided inside the rod end block to force the plate away from the front laser sensor, and a pressure sensor is provided inside the rod end block to detect the pressure applied by the plate to the pressure relief spring; when the pressure value detected by the pressure sensor is greater than the pressure threshold, the mobile body stops moving forward.

[0026] By adopting the above technical solution, when encountering debris with strong adhesion on the road surface, the pressure on the push plate increases, causing the pressure relief spring to be compressed until the pressure value detected by the pressure sensor is greater than the pressure threshold, indicating that the push plate cannot smoothly push the debris on the road surface, and the deflection detection is stopped in time to prevent the front laser sensor and the rear laser sensor from being damaged, making the deflection detection less susceptible to large errors.

[0027] In summary, the present application includes at least the following beneficial effects.

[0028] When the moving vehicle is pulled forward by any vehicle, each time it moves forward a distance, the front laser sensor and the rear laser sensor will detect to obtain the corresponding distance value, and then calculate the distance at the starting point a. The deflection value at x can be used to more efficiently obtain the deflection values ​​of several points on the road surface, so as to more quickly perform deflection detection on the completed road surface, so as to start subsequent road construction work more quickly, which is helpful to improve the overall progress of road construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the main structure of this application; Figure 2 It is a flowchart of the steps of starting a deflection test to obtain deflection values ​​at several points; Figure 3 It is a schematic structural diagram of the bottom of the moving vehicle body viewed from above, with the height adjustment rod and the fixed rod partially cut away; Figure 4 It is a flowchart of the steps of the equal height test; Figure 5 yes Figure 3 Enlarged view of point A in the middle.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. Moving body; 2. Detection component; 3. Front laser sensor; 31. Plate; 32. Pressure-relieving spring; 33. Pressure sensor; 4. Rear laser sensor; 41. Rod inclination sensor; 42. Body inclination sensor; 43. Body rod motor; 44. Front rack; 45. Water mist nozzle; 46. Push plate electric cylinder; 47. Push plate; 48. Connecting block; 49. Rod end block; 5. Fixed rod; 51. Front sliding rod; 52. Rear sliding rod; 53. Driving electric cylinder; 54. Height adjustment rod; 55. Body rod; 56. Vertical shift rod; 57. Height adjustment electric cylinder; 58. Distance measurement sensor; 59. Detection component. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] The present application embodiment discloses a high-efficiency detection device for road construction, referring to Figure 1 , including a mobile body 1 with four groups of two wheels each at the bottom. The mobile body 1 can be towed forward by a vehicle with a hook, and a weight of standard weight can be placed on the top of the mobile body 1 to simulate the load on the road. A detection component 2 is installed at the bottom of the mobile body 1. The detection component 2 is equipped with a front laser sensor 3 and a rear laser sensor 4 electrically connected to an external controller. The external controller is installed on the mobile body 1. The front laser sensor 3 is located at the center between a group of two wheels at the rear of the mobile body 1. At the same time, an encoder is set at the rotating shaft of any group of tires of the mobile body 1 to obtain the number of rotations of the tires during the forward movement of the mobile body 1, and combined with the circumference of the tires of the mobile body 1, the forward movement distance of the mobile body 1 is calculated.

[0033] Reference Figure 2 , the front laser sensor 3 detects and obtains the distance value L between itself and the road surface 前x , the laser sensor 4 detects and obtains the distance value L between itself and the road surface 后x , the distance between the front laser sensor 3 and the rear laser sensor 4 is s, s needs to be greater than the deflection influence radius, that is, s ≥ 3m. The moving body 1 is towed forward and the moving distance value is a When x, the front laser sensor 3 obtains the corresponding L 前xAnd then the laser sensor 4 obtains the corresponding L 后x , x is an integer, a is the distance between two adjacent detection points and is determined according to the detection requirements, for example, between 10m and 20m. The distance between the detection point farthest from the starting point and the starting point during the vehicle movement is a x max Since the rear laser sensor 4 is located at a distance s behind the front laser sensor 3, in order to ensure that at least one point on the road surface can be subsequently deflected during the deflection detection process. x The calculation requires a x max ≥s, then the distance a from the starting point of the front laser sensor 3 The deflection value lo at x x =L 前x -L 后（x+s / a） , and x+s / a≤x max , s / a is an integer.

[0034] Reference Figure 1 and Figure 3 The detection component 2 includes a height-adjusting rod 54 installed at the rear bottom of the mobile body 1. The bottom end of the height-adjusting rod 54 is detachably connected to a horizontal fixed rod 5. The two ends of the fixed rod 5 in the length direction are correspondingly sleeved and slidably connected with a front slide bar 51 and a rear slide bar 52. The front slide bar 51 and the rear slide bar 52 both move along the length direction of the fixed rod 5. The bottom of the end of the front slide bar 51 away from the fixed rod 5 is detachably connected to the front laser sensor 3. The bottom of the end of the rear slide bar 52 away from the fixed rod 5 is detachably connected to the rear laser sensor 4. The fixed rod 5 is detachably connected with Two driving electric cylinders 53 are electrically connected to an external controller, and power rods of the two driving electric cylinders 53 are detachably connected to the front slide bar 51 and the rear slide bar 52 one by one. The moving distance of the front slide bar 51 driven by the driving electric cylinder 53 corresponding to the front slide bar 51 is a preset value in the external controller, and the moving distance of the rear slide bar 52 driven by the driving electric cylinder 53 corresponding to the rear slide bar 52 is input by the operator into the external controller via the human-machine interface on the display screen attached to the mobile body 1, so as to meet the requirements of different distances s and detection point spacing a.

[0035] Reference Figure 1 A detection component 59 is detachably connected to the position where the height adjustment rod 54 is set on the fixed rod 5. Both the front sliding rod 51 and the rear sliding rod 52 are detachably connected to a distance sensor 58 electrically connected to an external controller. The detection component 59 is located between the two distance sensors 58, and the two distance sensors 58 correspond to the front laser sensor 3 and the rear laser sensor 4 one by one. The two distance sensors 58 detect the distance between themselves corresponding to the detection components 59. By adding the distance values ​​detected by the two distance sensors 58 and the thickness value of the detection component 59 itself, the distance value s between the front laser sensor 3 and the rear laser sensor 4 can be detected and adjusted in real time.

[0036] Reference Figure 3 The height-adjusting rod 54 includes a vertical body rod 55 and a vertical displacement rod 56 which is sleeved in the vertical direction and slidably connected to the body rod 55. A height-adjusting electric cylinder 57 which is electrically connected to an external controller is detachably connected inside the body rod 55. The bottom end of the power rod of the height-adjusting electric cylinder 57 is detachably connected to the vertical displacement rod 56, so that during the deflection detection process, the front laser sensor 3 and the rear laser sensor 4 can be close to the road surface; when the deflection detection is not needed, the front laser sensor 3 and the rear laser sensor 4 can be far away from the road surface, so that the front laser sensor 3 and the rear laser sensor 4 are not easily touched during the movement.

[0037] Reference Figure 3 The body rod 55 is rotatably connected to the mobile body 1. An electric slip ring is arranged inside the mobile body 1 to supply power to the height adjustment electric cylinder 57, so that the height adjustment electric cylinder 57 can smoothly rotate with the body rod 55. A body rod motor 43 for driving the body rod 55 to rotate is detachably connected to the bottom of the mobile body 1. The output shaft of the body rod motor 43 is located inside the mobile body 1 to transmit power to the body rod 55 via a reduction gear box, so that the body rod 55 can rotate around its own vertical center line. The body rod motor 43 is electrically connected to an external controller.

[0038] Reference Figure 4 Before the deflection detection begins, an equal height test is performed first, that is, the body rod motor 43 drives the body rod 55 to rotate 90°, so that the connection line between the front laser sensor 3 and the rear laser sensor 4 is perpendicular to the forward movement direction of the mobile body 1, and then the two driving electric cylinders 53 are operated to make the distance values ​​detected by the two ranging sensors 58 and the detection member 59 equal and equal to the preset distance value in the external controller, that is, the distances between the front laser sensor 3 and the rear laser sensor 4 and the rotation axis of the body rod 55 are equal, and at this time, the front laser sensor 3 and the rear laser sensor 4 can be located outside the deflection influence radius of the two groups of wheels behind the mobile body 1 after moving away from each other. Then the front laser sensor 3 detects and obtains the distance value b1 and the rear laser sensor 4 detects and obtains the distance value c1, then the height adjustment rod 54 rotates 180° in the same direction, the front laser sensor 3 detects and obtains the distance value b2 again and the rear laser sensor 4 detects and obtains the distance value c2 again, then the height error E1=|b1-c2|, the height error E2=|b2-c1|, when E1 and E2 are both less than the error thresholds preset in the external controller, the height adjustment rod 54 rotates 90° in the same direction, and then the front sliding bar 51 and the rear sliding bar 52 move away from each other to the position under the deflection detection, then the deflection detection can be started; otherwise, the corresponding sound and light alarm on the mobile body 1 will sound an alarm to stop using the detection equipment for subsequent deflection detection.

[0039] Reference Figure 1 and Figure 3A body inclination sensor 42 is detachably connected to the bottom center of the mobile body 1, and the upper parts of the front sliding bar 51 and the rear sliding bar 52 are detachably connected to the rod inclination sensor 41. The two ranging sensors 58 are located between the two rod inclination sensors 41. The body inclination sensor 42 and the rod inclination sensor 41 are both electrically connected to an external controller to detect the inclination angle and inclination direction of the mobile body 1, the front laser sensor 3 and the rear laser sensor 4, so that the postures of the front laser sensor 3, the rear laser sensor 4 and the mobile body 1 are not prone to large deviations, so as to ensure that the accuracy of the deflection detection is not prone to large errors.

[0040] Reference Figure 3 The front bottom of the mobile body 1 is detachably connected with a front frame 44, and the front frame 44 is detachably connected with a plurality of water mist nozzles 45 in the horizontal direction. The connecting direction of all the water mist nozzles 45 is perpendicular to the forward direction of the mobile body 1. The mobile body 1 is provided with a water pump and a water tank so that the water mist nozzles 45 can spray water mist toward the road surface, and the water mist nozzles 45 are located in front of the front laser sensor 3, so as to reduce the possibility of large dust on the road surface where the subsequent front laser sensor 3 and the rear laser sensor 4 move and pass, and reduce the distance value L. 前x and L 后x The impact of accuracy.

[0041] Reference Figure 3 and Figure 5 The bottom of the mobile body 1 is located in front of the front frame 44 and is detachably connected to a push plate electric cylinder 46. The power rod of the push plate electric cylinder 46 is vertical. The bottom end of the power rod of the push plate electric cylinder 46 is detachably connected to a connecting block 48. The connecting block 48 is installed with a push plate 47. The horizontal cross-section of the push plate 47 is V-shaped, and when the push plate 47 moves forward with the mobile body 1, the middle turning point of the push plate 47 is located in front of itself, so as to push some gravel and debris on the road surface to both sides of the mobile body 1, thereby reducing the possibility of the front laser sensor 3 being hit.

[0042] Reference Figure 5 The connecting block 48 includes a rod end block 49 fixedly connected to the power rod of the push plate electric cylinder 46 and a plate 31 slidably connected to the rod end block 49. The sliding direction of the plate 31 is the same as the forward direction of the mobile body 1. A pressure sensor 33 is detachably connected in the rod end block 49. A pressure relief spring 32 is detachably connected between the pressure sensor 33 and one end of the plate 31 located in the rod end block 49. The pressure relief spring 32 forces the plate 31 to move away from the front frame 44, so that when the push plate 47 abuts against debris with strong adhesion, the push plate 47 is close to the front frame 44, and then when the pressure value detected by the pressure sensor 33 increases and is greater than the pressure threshold preset in the external controller, the corresponding sound and light alarm on the mobile body 1 sounds an alarm, so that the mobile body 1 stops moving forward in time, reducing the possibility of damage to the connecting block 48.

[0043] The implementation principle of the high-efficiency detection equipment for road construction in the embodiment of the present application is as follows: when the deflection detection is started after the equal height test is passed, the corresponding vehicle pulls the moving vehicle body 1 to move forward steadily at a suitable speed, and when it moves to a When the position is at the distance x, such as 0, a, 2a and other specific points, the front laser sensor 3 obtains the distance value L 前x And the rear laser sensor 4 synchronously obtains the distance value L 后x , so as to obtain the deflection value lo at the corresponding point in the subsequent calculation x , for example, the deflection value lo0 at the initial point = L 前0 -L 后s / a , and the deflection value at the distance a from the initial point is lo1=L 前1 -L 后（1+s / a） , to finally obtain x max -s / a points and displayed on a display screen attached to the mobile vehicle 1, so as to conduct a more efficient deflection value detection on the entire constructed road.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An efficient detection device for road construction, characterized in that: The invention comprises a mobile body (1) which can be towed forward by a vehicle and can adjust its load, the mobile body (1) being detachably connected to a detection component (2), the detection component (2) being provided with a front laser sensor (3) and a rear laser sensor (4) for detecting the distance between each of the front laser sensors and the road surface, the front laser sensor (3) being located between two wheels of the same group of the mobile body (1) which are farthest from the towing vehicle, the rear laser sensor (4) being located behind the front laser sensor (3) in the direction of the moving body (1), and the distance s between the rear laser sensor (4) and the front laser sensor (3) being greater than 3 m; When the moving vehicle (1) moves forward by a distance x times a, the front laser sensor (3) detects and obtains the distance value L 前x Then the laser sensor (4) detects and obtains the distance value L 后x , then it is located at a distance a from the starting point The deflection value lo at x x =L 前x -L 后（x+s / a） , x and s / a are both integers, a x max ≥s,x+s / a≤x max .

2. The high-efficiency detection equipment for road construction according to claim 1, characterized in that: The detection component (2) comprises a height-adjusting rod (54) disposed on the mobile vehicle body (1), a fixed rod (5) detachably connected to the height-adjusting rod (54), a front sliding rod (51) and a rear sliding rod (52) slidably connected to two ends of the fixed rod (5) in a one-to-one correspondence, and a driving electric cylinder (53) disposed on the fixed rod (5) to drive the front sliding rod (51) and the rear sliding rod (52) to move so that the front laser sensor (3) and the rear laser sensor (4) are moved closer or farther away from each other, and the moving directions of the front sliding rod (51) and the rear sliding rod (52) are located on the same straight line.

3. The high-efficiency detection equipment for road construction according to claim 2, characterized in that: The height-adjusting rod (54) comprises a body rod (55) detachably connected to the movable body (1) and a vertical movement rod (56) slidably connected to the body rod (55); a height-adjusting electric cylinder (57) for driving the vertical movement rod (56) to move is detachably connected inside the body rod (55); and a moving direction of the vertical movement rod (56) is perpendicular to a moving direction of the front sliding rod (51).

4. The high-efficiency detection equipment for road construction according to claim 2, characterized in that: The front sliding bar (51) and the rear sliding bar (52) are both detachably connected to distance measuring sensors (58), and a detection member (59) is detachably connected to the fixed bar (5) at a position corresponding to the height adjustment bar (54). The two distance measuring sensors (58) detect the distance value between each of them and the detection member (59) to obtain the spacing between the front laser sensor (3) and the rear laser sensor (4).

5. The high-efficiency detection equipment for road construction according to claim 2, characterized in that: The front sliding rod (51) and the rear sliding rod (52) are both provided with a rod inclination sensor (41), and the mobile vehicle body (1) is provided with a vehicle body inclination sensor (42); during deflection detection, the inclination angles and inclination directions detected by the two rod inclination sensors (41) and the vehicle body inclination sensor (42) remain consistent.

6. The high-efficiency detection equipment for road construction according to claim 2, characterized in that: The height adjustment rod (54) is rotatably connected to the mobile body (1), the rotation axis direction of the height adjustment rod (54) is perpendicular to the moving direction of the front sliding rod (51), and the mobile body (1) is detachably connected to a body rod motor (43) for driving the height adjustment rod (54) to rotate; before deflection detection, the body rod motor (43) operates so that the front laser sensor (3) and the rear laser sensor (4) can be located outside the deflection influence radius of the mobile body (1) after they move away from each other.

7. The high-efficiency detection equipment for road construction according to claim 6, characterized in that: When the front laser sensor (3) and the rear laser sensor (4) are moved out of the bending influence radius of the moving vehicle body (1), the distances between the front laser sensor (3) and the rear laser sensor (4) and the rotation axis of the height adjustment rod (54) are kept equal, and then the equal height test is started; When the equal height test begins, the front laser sensor (3) detects and obtains the distance value b1 and the rear laser sensor (4) detects and obtains the distance value c1, then the height adjustment rod (54) is rotated 180°, the front laser sensor (3) detects and obtains the distance value b2 again and the rear laser sensor (4) detects and obtains the distance value c2 again, then the height error E1=|b1-c2|, the height error E2=|b2-c1|, when E1 and E2 are both less than the error threshold, the deflection detection begins.

8. The high-efficiency detection equipment for road construction according to claim 1, characterized in that: The mobile vehicle body (1) is detachably connected to a front frame (44) at a side of the front laser sensor (3) facing away from the rear laser sensor (4), and the front frame (44) is detachably connected to a plurality of water mist nozzles (45) for spraying water mist toward a road surface in the forward moving direction of the mobile vehicle body (1).

9. The high-efficiency detection equipment for road construction according to claim 1, characterized in that: The mobile vehicle body (1) is detachably connected to a push plate electric cylinder (46) at a side of the front laser sensor (3) facing away from the rear laser sensor (4); a power rod of the push plate electric cylinder (46) is detachably connected to a connecting block (48); the connecting block (48) is detachably connected to a push plate (47) in a V shape and capable of being close to the road surface; the larger the distance between the push plates (47), the closer the two opposite sides are to the front laser sensor (3).

10. The high-efficiency detection equipment for road construction according to claim 9, characterized in that: The connecting block (48) comprises a rod end block (49) detachably connected to a power rod of a push plate electric cylinder (46) and a plate (31) slidably connected to the rod end block (49); the sliding direction of the plate (31) is consistent with the forward movement direction of the mobile vehicle (1); a pressure relief spring (32) for forcing the plate (31) to move away from the front laser sensor (3) is provided inside the rod end block (49); a pressure sensor (33) for detecting the pressure applied by the plate (31) to the pressure relief spring (32) is provided inside the rod end block (49); when the pressure value detected by the pressure sensor (33) is greater than a pressure threshold, the mobile vehicle (1) stops moving forward.

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