A measuring device for road defect detection

Abstract

The application discloses a kind of measuring devices for road flaw detection, belong to road detection technical field.The both ends of the mounting plate are provided with first fixed blocks, the first fixed blocks are provided with lower shafts and upper shafts in parallel, the middle parts of the lower shafts and the upper shafts are respectively provided with first gears and second gears, the first shafts are provided with connecting blocks, the other ends of the connecting blocks are fixedly provided with baffles, the mounting plate behind the first fixed blocks is provided with second fixed blocks, the second fixed blocks are provided with third shafts, the third shafts are provided with third gears, the third shafts are provided with mounting brackets, the other ends of the mounting brackets are provided with connecting plates, the other ends of the connecting plates are provided with vertically arranged fixed rods, and the ends of the fixed rods are provided with detection assemblies.The technical solution is used to solve the problem that the detection assembly of the measuring device in the prior art is easily damaged due to collision with obstacles on the road during mobile measurement.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of road detection, and particularly relates to a measuring device for road detection. BACKGROUND

[0002] In the field of road construction and maintenance, road detection technology plays a crucial role in timely discovering potential defects inside the road, such as cracks, cavities, delamination, etc. If these defects are not discovered and addressed in a timely manner, they will seriously affect the service life of the road and driving safety.

[0003] The existing measuring device for road detection is usually moved on the road by a towing vehicle. During the detection, the detection assembly in the measuring device needs to be adjusted in height (height from the ground) according to different road materials to achieve the best detection effect. Because the surface hardness, flatness, and reflection characteristics of different road materials are different, only by adjusting the detection assembly to the appropriate height can the detection signal be accurately received and effectively analyzed (of course, different detection assemblies also need to be adjusted to different appropriate working heights).

[0004] However, the road surface is not always flat and unobstructed, and there are often various obstacles such as kerbs, manhole covers, and protruding bricks. These obstacles may collide with the detection assembly during the movement of the measuring device, causing damage to the detection assembly. SUMMARY

[0005] In view of the above, the purpose of the present application is to provide a measuring device for road detection to solve the problem that the detection assembly of the existing measuring device is easily damaged by colliding with obstacles on the road during mobile measurement.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The utility model discloses a kind of measuring devices for road flaw detection, including tractor, measuring mechanism is fixedly arranged at the rear of the tractor, the measuring mechanism includes mounting plate, both ends of the mounting plate are equipped with first fixed block, first rotating shaft and second rotating shaft are equipped in parallel on the first fixed block, first gear and second gear are fixedly arranged on the middle part of the first rotating shaft and second rotating shaft, the first gear and second gear are engaged, connecting block is equipped on the first rotating shaft, one end of the connecting block is fixed on the first rotating shaft, baffle is fixedly arranged on the other end of the connecting block, second fixed block is equipped on the mounting plate behind the first fixed block, third rotating shaft is equipped on the second fixed block, third gear is equipped on the third rotating shaft, the third gear and second gear are engaged, mounting bracket is equipped on the third rotating shaft, one end of the mounting bracket is fixed on the third rotating shaft, connecting plate is equipped on the other end of the mounting bracket, one end of the connecting plate is fixed on the mounting bracket, fixed rod vertically arranged is equipped on the other end of the connecting plate, detection component is equipped on one end of the fixed rod, fixed plate is equipped above the connecting plate, one end of the fixed plate is connected to the mounting plate, damping component is equipped between the fixed plate and fixed rod, the other end of the damping component is respectively hingedly arranged on the other end of the fixed rod and the other end of the fixed plate, limiting spring is equipped between the connecting plate and fixed plate, and the both ends of the limiting spring are respectively fixed on the fixed plate and the connecting plate, for the position of connecting plate is positioned.

[0008] Further, the damping component includes an outer sleeve, the inner portion of the outer sleeve is provided with a stop ring, the upper portion of the stop ring is provided with a piston block, the middle portion of the piston block is provided with a plurality of first through holes, the lower portion of the piston block is provided with a connecting bracket, one end of the connecting bracket is fixed to the piston block, the other end of the connecting bracket is provided with a piston rod, the inner portion of the outer sleeve is provided with damping liquid, one end of the outer sleeve is connected to the fixed plate, the other end of the piston rod is fixed to the fixed rod.

[0009] Further, the lower surface of the piston block is provided with a deflector plate, the edge of the deflector plate is rotatably connected to the piston block, the deflector plate fully covers the first through holes provided on the piston block, a plurality of second through holes are provided on the deflector plate, the diameter of the second through holes is smaller than the diameter of the first through holes, and the plurality of second through holes are respectively located at the middle position of the plurality of first through holes.

[0010] Further, the detection component is a camera component or a ground penetrating radar component.

[0011] Further, the first rotating shaft is provided with an inclined support, one end of the inclined support is fixed to the first rotating shaft, the other end of the inclined support is provided with a telescopic element, the both ends of the telescopic element are hingedly connected to the inclined support and the side of the baffle facing the fixed rod, the middle portion of the fixed rod is provided with a telescopic portion.

[0012] Further, the fixed rod is provided with a diagonal brace, two ends of the diagonal brace are fixedly connected to the detection assembly and the fixed rod respectively.

[0013] Further, the side surface of the mounting plate is provided with a hanging plate, and the hanging plate is connected to the tractor.

[0014] Further, the baffle is provided with a blowing assembly, and the blowing assembly is used to clean the road surface on the moving path of the detection assembly.

[0015] The beneficial effects of the present application are that:

[0016] In the technical solution, under the linkage action of the first gear, the second gear and the third gear, when the baffle is extruded by an obstacle, the rotation of the baffle drives the rotation of the connecting plate, and then drives the upward lifting of the detection assembly, so that the position of the detection assembly is lifted, and the detection assembly is prevented from contacting the obstacle, and the baffle and the detection assembly are quickly reset to the working state under the action of the limiting spring.

[0017] Other advantages, objects and features of the present application will be set forth in the following specification, and will be apparent to those skilled in the art from the practice of the present application, or will be learned by the practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the purposes, technical solutions and beneficial effects of the present application clearer, the present application provides the following drawings for illustration:

[0019] Figure 1 It is a perspective view of the measuring device of the present application;

[0020] Figure 2 It is another perspective view of the measuring device of the present application;

[0021] Figure 3 It is an internal sectional view of the measuring device of the present application;

[0022] Figure 4 It is an internal view of the damping assembly in the measuring device of the present application;

[0023] Figure 5 It is a perspective view of the internal structure of the damping assembly in the measuring device of the present application;

[0024] Figure 6 It is another perspective view of the internal structure of the damping assembly in the measuring device of the present application.

[0025] In the drawings, the following marks are used:

[0026] 1. Mounting plate; 2. Hanging plate; 3. First fixing block; 4. First rotating shaft; 5. Second rotating shaft; 6. First gear; 7. Second gear; 8. Connecting block; 9. Baffle; 10. Second fixing block; 11. Third rotating shaft; 12. Third gear; 13. Mounting bracket; 14. Connecting plate; 15. Fixing rod; 16. Telescopic part; 17. Detection assembly; 18. Damping assembly; 19. Diagonal brace; 20. Limiting spring; 21. Fixing plate; 22. Piston block; 23. First through hole; 24. Deflection plate; 25. Second through hole; 26. Connecting bracket; 27. Piston rod; 28. Retaining ring; 29. ​​External sleeve; 30. Damping fluid; 31. Inclined bracket; 32. Telescopic element. Detailed Implementation

[0027] like Figures 1-6 As shown, the present invention discloses a road flaw detection measuring device, including a tractor unit. A measuring mechanism is fixedly mounted at the rear of the tractor unit. The measuring mechanism includes a mounting plate 1, with first fixing blocks 3 at both ends of the mounting plate 1. A first rotating shaft 4 and a second rotating shaft 5 are arranged parallel to each other on the first fixing blocks 3. A first gear 6 and a second gear 7 are respectively fixedly mounted in the middle of the first rotating shaft 4 and the second gear 7 are meshed. A connecting block 8 is provided on the first rotating shaft 4. One end of the connecting block 8 is fixed to the first rotating shaft 4, and a baffle 9 is fixedly mounted on the other end of the connecting block 8. A second fixing block 10 is symmetrically arranged on the mounting plate 1 behind the first fixing block 3. A third rotating shaft 11 is provided on the second fixing block 10. A third gear 12 is provided on the third rotating shaft 11. The third gear 12 is meshed with the second gear 7. A mounting bracket 13 is provided on the shaft 11. One end of the mounting bracket 13 is fixed to the third rotating shaft 11. A connecting plate 14 is provided on the other end of the mounting bracket 13. One end of the connecting plate 14 is fixed to the mounting bracket 13. A vertically arranged fixing rod 15 is provided on the other end of the connecting plate 14. A detection component 17 is provided on one end of the fixing rod 15. A fixing plate 21 is provided above the connecting plate 14. One end of the fixing plate 21 is connected to the mounting plate 1. A damping component 18 is provided between the fixing plate 21 and the fixing rod 15. The two ends of the damping component 18 are respectively hinged to the other end of the fixing rod 15 and the other end of the fixing plate 21. A limiting spring 20 is provided between the connecting plate 14 and the fixing plate 21. The two ends of the limiting spring 20 are respectively fixed to the fixing plate 21 and the connecting plate 14 to limit the position of the connecting plate 14.

[0028] The working principle of the above technical solution is as follows:

[0029] When the tractor drives the measuring mechanism to move on the road, at this time, in the initial state, the baffle 9 and the detection assembly 17 are vertically arranged (the baffle 9 can be slightly inclined at an angle backward to avoid the problem of being stuck at a low probability of obstacles), and there is a certain gap between the baffle 9 and the road surface, that is, when obstacles (ground protrusions or stones, etc.) appear on the road surface, the obstacles first contact the baffle 9, that is, in the process of contact, the baffle 9 is extruded, thereby driving the baffle 9 to rotate, that is, the baffle 9 rotates backward, which drives the second gear 7 to rotate in the opposite direction under the action of the first gear 6, thereby driving the third gear 12 to rotate in the opposite direction of the first gear 6 under the action of the second gear 7, that is, driving the connecting plate 14 on the third rotating shaft 11 to rotate upward, thereby driving the detection assembly 17 to move upward, thereby increasing the height of the detection assembly 17, thereby avoiding the expansion of the detection assembly 17 and the ground obstacles, thereby avoiding damage. When the baffle 9 is separated from the obstacles, under the action of the limiting spring 20, the connecting plate 14 is reset, and under the action of the third gear 12, the second gear 7 and the first gear 6, the baffle 9 is reset to the initial position, so that the baffle 9 is ready for the next contact with the obstacles, and the detection assembly 17 is reset to the initial position (the height can be adjusted to the best detection height according to different road surfaces), and the road surface detection operation continues. Of course, it is not difficult to understand that the limiting spring 20 drives the damping assembly 18 to quickly reset to the initial position by using the deformation ability, and under the action of the damping assembly 18, the horizontal initial position of the connecting plate 14 is limited, avoiding the downward rotation of the connecting plate 14 while buffering the upward rotation force of the connecting plate 14, further protecting the detection assembly 17. In addition, the use of the damping assembly 18 and the spring can reset and filter shock, ensuring the stability of the detection assembly 17 during operation.

[0030] The technical effects achieved by the above technical scheme are:

[0031] Under the linkage action of the first gear 6, the second gear 7 and the third gear 12, when the baffle 9 is extruded by the obstacles, the rotation of the baffle 9 drives the connecting plate 14 to rotate, thereby driving the detection assembly 17 to lift upward, thereby raising the position of the detection assembly 17, avoiding contact with the obstacles, protecting the detection assembly 17, and under the action of the limiting spring 20, the baffle 9 and the detection assembly 17 can also quickly reset to the working state.

[0032] In an implementable mode, the damping assembly 18 comprises an outer sleeve 29, an inner portion of the outer sleeve 29 is provided with a baffle ring 28, an upper portion of the baffle ring 28 is provided with the piston block 22, a middle portion of the piston block 22 is provided with a plurality of first through holes 23, a lower portion of the piston block 22 is provided with the connecting frame 26, one end of the connecting frame 26 is fixed on the piston block 22, the other end of the connecting frame 26 is provided with the piston rod 27, an inner portion of the outer sleeve 29 is provided with damping liquid 30 (hydraulic oil is available), one end of the outer sleeve 29 is connected to the fixed plate 21, the other end of the piston rod 27 is fixed on the fixed rod 15.

[0033] That is, when the connecting plate 14 rotates and presses the piston rod 27, the piston rod 27 drives the piston block 22 to move upward, and then the upper damping liquid 30 passes through the first through holes 23, thereby playing a damping effect.

[0034] In an implementable mode, the lower surface of the piston block 22 is provided with the deflector plate 24, the edge of the deflector plate 24 is rotationally connected to the piston block 22, the deflector plate 24 fully covers the first through holes 23 arranged on the piston block 22, the deflector plate 24 is provided with a plurality of second through holes 25, the diameter of the second through holes 25 is smaller than that of the first through holes 23, and the plurality of second through holes 25 are respectively located at the middle positions of the plurality of first through holes 23.

[0035] It is not difficult to understand that when the piston rod 27 is subjected to the upward movement of the connecting plate 14, at this time the piston block 22 moves upward, the damping liquid 30 passing through the first through hole 23 will push the deflector plate 24 to flip downward, so that the hydraulic oil can quickly pass through, that is, the passing resistance of the hydraulic oil is reduced, that is, the advantage of this way is that when the baffle 9 contacts the obstacle, only a small force is needed to drive the baffle 9 to rotate, that is, to drive the detection assembly 17 to quickly respond to the upward movement, at the same time, the contact force between the obstacle and the baffle 9 is reduced, and the overall movement resistance of the device is reduced; at the same time, under the action of the limiting spring 20, the damping assembly 18 is reset, at this time, the piston block 22 moves downward, that is, under the action of the hydraulic oil, the deflector plate 24 is reset to tightly adhere to the piston block 22, that is, at this time the hydraulic oil can only move upward from the second through hole 25, and since the diameter of the second through hole 25 is smaller than that of the first through hole 23, the damping effect is achieved, thereby delaying the reset speed of the damping assembly 18, and it can be understood that the time for the height of the detection assembly 17 to return to the initial position is relatively long, such as 2s, that is, under the action of the tractor, the detection assembly 17 will move a certain distance within 2s, and then reset after the obstacle moves to the rear of the detection assembly 17, thereby avoiding the problem of collision between the detection assembly 17 and the obstacle during the reset process. The purpose of the connecting frame 26 is to connect the piston rod 27 and the piston block 22, and does not affect the flipping of the deflector plate 24. Of course, the retaining ring is used to limit the position of the piston block 22 in the present application, and of course it can also not be provided, and the closed end of the external sleeve 29 is used to limit the position by contacting the connecting frame 26, which will not be described in detail here.

[0036] Of course, it is not difficult to understand that the diameter of the first through hole 23 is set to be relatively small, and only needs to meet the requirement that the damping liquid 30 can quickly pass through, and the diameter of the second through hole 25 is set to be relatively large, which can delay the reset, so that the reset speed of the piston block 22 is slowed down, and the advantage is that the detection assembly 17 can quickly respond to the upward movement, and at the same time, the problem of damage caused by contact between the detection assembly 17 and the obstacle during the reset process can be avoided.

[0037] In an implementable manner, the detection assembly 17 is a camera assembly or a ground penetrating radar assembly, and of course can also be other flaw detection sensor assemblies, which will not be described in detail here.

[0038] In an implementable manner, the first rotating shaft 4 is provided with an inclined bracket 31, one end of the inclined bracket 31 is fixed on the first rotating shaft 4, the other end of the inclined bracket 31 is provided with a telescopic element 32 (an electric or hydraulic telescopic rod), and the two ends of the telescopic element 32 are hinged to the inclined bracket 31 and the side of the baffle 9 facing the fixed rod 15. The middle part of the fixed rod 15 is provided with a telescopic part 16 (which can be achieved by threadedly connecting between the external and internal pipes, which will not be described in detail here).

[0039] The working principle of the technical solution is as follows:

[0040] Through the action of the telescopic element 32, the inclination of the baffle 9 can be adjusted, that is, the height of the lower part of the baffle 9 relative to the road surface can be adjusted, that is, the height when the baffle 9 contacts the obstacle is adjusted. The telescopic part 16 provided on the fixed rod 15 is used to adjust the height of the detection assembly 17, that is, the height of the baffle 9 can be matched with the height of the detection assembly 17 to adjust, thereby changing the height of the contact with the obstacle. That is to say, when the height of the obstacle is less than the height of the detection assembly 17, the baffle 9 does not contact the obstacle, and the obstacle does not contact the detection assembly 17, that is, this arrangement can ensure the continuous working effect of the detection assembly 17. If the height of the baffle 9 is not changed, the obstacle with low height will also drive the detection assembly 17 to move upwards, which will cause the problem of intermittent work of the detection assembly 17.

[0041] In an implementable manner, the fixed rod 15 is provided with a diagonal brace 19, and the two ends of the diagonal brace 19 are fixedly connected to the detection assembly 17 and the fixed rod 15, respectively. The side surface of the mounting plate 1 is provided with a hanging plate 2 connected to the towing vehicle. The diagonal brace 19 can ensure the connection effect of the detection assembly 17, and the hanging plate 2 can be connected to the towing vehicle.

[0042] In an implementable manner, the baffle 9 is provided with a blowing assembly for cleaning the road surface on the moving path of the detection assembly 17. The blowing assembly can be composed of a fan and an air outlet pipe. The blowing assembly can improve the working effect of the detection assembly 17 after cleaning the road surface, especially when the detection assembly 17 uses a camera assembly to take pictures of the ground. After blowing away the leaves or dust, the problem of small cracks on the road surface being blocked can be avoided.

[0043] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and detail without departing from the scope defined by the claims of the present application.

Claims

1. A road flaw detection measuring device, comprising a tractor unit, wherein a measuring mechanism is fixedly mounted at the rear of the tractor unit, characterized in that: The measuring mechanism includes a mounting plate (1), with first fixing blocks (3) at both ends of the mounting plate (1). A first rotating shaft (4) and a second rotating shaft (5) are arranged parallel to each other on the first fixing blocks (3). A first gear (6) and a second gear (7) are fixed in the middle of the first rotating shaft (4) and the second rotating shaft (5), respectively. The first gear (6) and the second gear (7) are meshed. A connecting block (8) is provided on the first rotating shaft (4). One end of the connecting block (8) is fixed to the first rotating shaft (4), and a baffle (9) is fixed on the other end of the connecting block (8). A second fixing block (10) is provided on the mounting plate (1) behind the first fixing block (3). A third rotating shaft (11) is provided on the second fixing block (10). A third gear (12) is provided on the third rotating shaft (11). The third gear (12) and the second gear (7) are meshed. A mounting bracket (13) is provided on the third rotating shaft (11). One end of the mounting bracket (13) is fixed to the third rotating shaft (11). The other end of the mounting bracket (13) is provided with a connecting plate (14). One end of the connecting plate (14) is fixed to the mounting bracket (13). The other end of the connecting plate (14) is provided with a vertically arranged fixing rod (15). One end of the fixing rod (15) is provided with a detection component (17). A fixing plate (21) is provided above the connecting plate (14). One end of the fixing plate (21) is connected to the mounting plate (13). 1) A damping assembly (18) is provided between the fixed plate (21) and the fixed rod (15). The two ends of the damping assembly (18) are respectively hinged to the other end of the fixed rod (15) and the other end of the fixed plate (21). A limiting spring (20) is provided between the connecting plate (14) and the fixed plate (21). The two ends of the limiting spring (20) are respectively fixed to the fixed plate (21) and the connecting plate (14) to limit the position of the connecting plate (14). The damping assembly (18) includes an outer sleeve (29), a retaining ring (28) is provided inside the outer sleeve (29), a piston block (22) is provided above the retaining ring (28), a plurality of first through holes (23) are provided in the middle of the piston block (22), a connecting frame (26) is provided below the piston block (22), one end of the connecting frame (26) is fixed to the piston block (22), and a piston rod (27) is provided on the other end of the connecting frame (26). The damping fluid (30) is provided inside the outer sleeve (29), one end of the outer sleeve (29) is connected to the fixing plate (21), and the other end of the piston rod (27) is fixed to the fixing rod (15). The piston block (22) has a deflection plate (24) on its lower surface. The edge of the deflection plate (24) is rotatably connected to the piston block (22). The deflection plate (24) completely covers the first through hole (23) on the piston block (22). The deflection plate (24) has a plurality of second through holes (25). The diameter of the second through hole (25) is smaller than the diameter of the first through hole (23), and the plurality of second through holes (25) are located at the middle position of the plurality of first through holes (23).

2. The road flaw detection measuring device according to claim 1, characterized in that: The detection component (17) is a camera component or a ground-penetrating radar component.

3. The road flaw detection measuring device according to claim 1, characterized in that: The first rotating shaft (4) is provided with an inclined bracket (31). One end of the inclined bracket (31) is fixed to the first rotating shaft (4). The other end of the inclined bracket (31) is provided with a telescopic element (32). The two ends of the telescopic element (32) are hinged to the inclined bracket (31) and the baffle (9) on the side facing the fixed rod (15). The fixed rod (15) is provided with a telescopic part (16) in the middle.

4. The road flaw detection measuring device according to claim 1, characterized in that: The fixed rod (15) is provided with a diagonal brace (19), and the two ends of the diagonal brace (19) are fixedly connected to the detection component (17) and the fixed rod (15) respectively.

5. A road flaw detection measuring device according to claim 1, characterized in that: The mounting plate (1) has a mounting plate (2) on its side, which is connected to the tractor.

6. A road flaw detection measuring device according to claim 1, characterized in that: The baffle (9) is provided with a purging assembly, which is used to clean the road surface on the moving path of the detection assembly (17).

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