Measuring device for road flaw detection

Abstract

The invention discloses a measuring device for road flaw detection, and belongs to the technical field of road detection. First fixing blocks are arranged at the two ends of the mounting plate correspondingly, a lower rotating shaft and an upper rotating shaft are arranged on the first fixing blocks in parallel, a first gear and a second gear are fixedly arranged in the middle of the lower rotating shaft and the middle of the upper rotating shaft correspondingly, a connecting block is arranged on the first rotating shaft, and a baffle is fixedly arranged at the other end of the connecting block. A second fixing block is arranged on the portion, behind the first fixing block, of the mounting plate, a third rotating shaft is arranged on the second fixing block, a third gear is arranged on the third rotating shaft, a mounting frame is arranged on the third rotating shaft, a connecting plate is arranged at the other end of the mounting frame, and a vertically-arranged fixing rod is arranged at the other end of the connecting plate; a detection assembly is arranged at one end of the fixing rod. The technical scheme is used for solving the problem that when a measuring device in the prior art carries out mobile measurement, a detection assembly of the measuring device is easily damaged due to collision with obstacles on a road.

Description

Technical Field

[0001] The present invention belongs to the technical field of road detection, and particularly relates to a measuring device for road flaw detection. Background Art

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

[0003] Existing measuring devices for road flaw detection usually move on the road by being driven by a tractor. When conducting detection, the detection components in the measuring device need to be adjusted in height (the height from the ground) according to different road surface materials to achieve the best flaw detection effect. Because for road surfaces of different materials, there are differences in surface hardness, flatness, and reflection characteristics, etc. Only by adjusting the detection components to an appropriate height can the accurate reception and effective analysis of flaw detection signals be ensured (of course, when using different detection components, they also need to be adjusted to different suitable working heights).

[0004] However, the road surface is not always flat and obstacle-free, and there are often various obstacles, such as curbstones, manhole covers, raised bricks, etc. During the process of the measuring device moving for operation, these obstacles may collide with the detection components, resulting in damage to the detection components. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a measuring device for road flaw detection to solve the problem that when the existing measuring device conducts mobile measurement, its detection components are easily damaged due to collision with obstacles on the road.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A measuring device for road flaw detection according to the present invention comprises a tractor, and a measuring mechanism is fixedly arranged behind the tractor. The measuring mechanism comprises a mounting plate, and first fixing blocks are arranged at both ends of the mounting plate. A first rotating shaft and a second rotating shaft are arranged in parallel on the first fixing blocks. A first gear and a second gear are respectively fixedly arranged in the middle parts of the first rotating shaft and the second rotating shaft. The first gear and the second gear are meshed. A connecting block is arranged on the first rotating shaft. One end of the connecting block is fixed to the first rotating shaft, and a baffle is fixedly arranged at the other end of the connecting block. A second fixing block is arranged on the mounting plate behind the first fixing block. A third rotating shaft is arranged on the second fixing block, and a third gear is arranged on the third rotating shaft. The third gear and the second gear are meshed. An installation frame is arranged on the third rotating shaft. One end of the installation frame is fixed to the third rotating shaft, and a connecting plate is arranged at the other end of the installation frame. One end of the connecting plate is fixed to the installation frame, and a vertically arranged fixing rod is arranged at the other end of the connecting plate. A detection component is arranged at one end of the fixing rod. A fixing plate is arranged above the connecting plate. One end of the fixing plate is connected to the mounting plate. A damping component is arranged between the fixing plate and the fixing rod. Both ends of the damping component are respectively hinged to the other end of the fixing rod and the other end of the fixing plate. A limiting spring is arranged between the connecting plate and the fixing plate, and both ends of the limiting spring are respectively fixed to the fixing plate and the connecting plate for limiting the position of the connecting plate.

[0007] Furthermore, the damping component comprises an external sleeve. A retaining ring is arranged inside the external sleeve. A piston block is arranged above the retaining ring. A plurality of first through holes are arranged in the middle of the piston block. A connecting frame is arranged below the piston block. One end of the connecting frame is fixed to the piston block, and a piston rod is arranged at the other end of the connecting frame. Damping liquid is arranged inside the external sleeve. One end of the external sleeve is connected to the fixing plate, and the other end of the piston rod is fixed to the fixing rod.

[0008] Furthermore, a deflecting plate is arranged on the lower surface of the piston block. The edge of the deflecting plate is rotatably connected to the piston block. The deflecting plate completely covers the first through holes arranged on the piston block. A plurality of second through holes are arranged on the deflecting plate. The diameter of the second through holes is smaller than that of the first through holes, and the plurality of second through holes are respectively located at the middle positions of the plurality of first through holes.

[0009] Furthermore, the detection component is a camera component or a ground penetrating radar component.

[0010] Furthermore, an inclined bracket is arranged on the first rotating shaft. One end of the inclined bracket is fixed to the first rotating shaft, and a telescopic element is arranged at the other end of the inclined bracket. Both ends of the telescopic element are hinged to the inclined bracket and the side surface of the baffle facing the fixing rod. A telescopic part is arranged in the middle of the fixing rod.

[0011] Furthermore, a diagonal brace is provided on the fixed rod, and two ends of the diagonal brace are fixedly connected to the detection assembly and the fixed rod respectively.

[0012] Furthermore, a hanging plate is provided on the side surface of the mounting plate, and the hanging plate is connected to the tractor.

[0013] Furthermore, a purging assembly is provided on the baffle, and the purging assembly is used to clean the road surface on the moving path of the detection assembly.

[0014] The beneficial effects of the present invention are as follows: In this technical solution, under the linkage action of the first gear, the second gear and the third gear, when the baffle is squeezed by an obstacle, the rotation of the baffle will drive the connecting plate to rotate, and then drive the detection assembly to lift upward, so that the position of the detection assembly is raised, avoiding contact with the obstacle and protecting the detection assembly. At the same time, under the action of the limiting spring, the baffle and the detection assembly can quickly return to the working state.

[0015] Other advantages, objectives and features of the present invention will be described in the following description, and to some extent, will be obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration: Figure 1 is a three-dimensional schematic diagram of the measuring device of the present invention; Figure 2 is a three-dimensional schematic diagram of another perspective of the measuring device of the present invention; Figure 3 is a schematic internal sectional view of the measuring device of the present invention; Figure 4 is a schematic internal view of the damping assembly in the measuring device of the present invention; Figure 5 is a three-dimensional schematic diagram of the internal structure of the damping assembly in the measuring device of the present invention; Figure 6 is a three-dimensional schematic diagram of another perspective of the internal structure of the damping assembly in the measuring device of the present invention.

[0017] The reference signs in the drawings are as follows: 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 frame; 14. Connecting plate; 15. Fixed rod; 16. Telescopic part; 17. Detection component; 18. Damping component; 19. Diagonal brace; 20. Limiting spring; 21. Fixed plate; 22. Piston block; 23. First through hole; 24. Deflection plate; 25. Second through hole; 26. Connecting frame; 27. Piston rod; 28. Retaining ring; 29. Outer sleeve; 30. Damping liquid; 31. Inclined bracket; 32. Telescopic element. Detailed implementation mode

[0018] As Figures 1-6 shown, a measuring device for road flaw detection of the present invention includes a tractor, and a measuring mechanism is fixedly arranged behind the tractor. The measuring mechanism includes a mounting plate 1. First fixing blocks 3 are arranged at both ends of the mounting plate 1. A first rotating shaft 4 and a second rotating shaft 5 are arranged in parallel on the first fixing block 3. A first gear 6 and a second gear 7 are respectively fixedly arranged in the middle of the first rotating shaft 4 and the second rotating shaft 5. The first gear 6 and the second gear 7 are meshed. A connecting block 8 is arranged 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 arranged at the other end of the connecting block 8. Second fixing blocks 10 are symmetrically arranged on the mounting plate 1 behind the first fixing block 3. A third rotating shaft 11 is arranged on the second fixing block 10. A third gear 12 is arranged on the third rotating shaft 11. The third gear 12 and the second gear 7 are meshed. A mounting frame 13 is arranged on the third rotating shaft 11. One end of the mounting frame 13 is fixed to the third rotating shaft 11, and a connecting plate 14 is arranged at the other end of the mounting frame 13. One end of the connecting plate 14 is fixed to the mounting frame 13, and a vertically arranged fixed rod 15 is arranged at the other end of the connecting plate 14. A detection component 17 is arranged at one end of the fixed rod 15. A fixed plate 21 is arranged above the connecting plate 14. One end of the fixed plate 21 is connected to the mounting plate 1. A damping component 18 is arranged between the fixed plate 21 and the fixed rod 15. Both ends of the damping component 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 arranged between the connecting plate 14 and the fixed plate 21. Both ends of the limiting spring 20 are respectively fixed to the fixed plate 21 and the connecting plate 14 for limiting the position of the connecting plate 14.

[0019] The working principle of the above technical solution is: When the tractor drives this measuring mechanism to move on the road, at this time, in the initial state, both the baffle 9 and the detection component 17 are vertically arranged (the baffle 9 can be slightly tilted backward by a certain angle to avoid the problem of low-probability jamming at obstacles), and there is a certain distance from the road surface. That is, when there are obstacles on the road surface (ground protrusions or stones, etc.), the obstacle first contacts the baffle 9. That is, during the contact process, the baffle 9 will be squeezed, and then the baffle 9 will be driven to rotate. That is, the baffle 9 rotating backward will drive the second gear 7 to rotate in the reverse direction under the action of the first gear 6. Then, under the action of the second gear 7, the third gear 12 will rotate in the same direction as the first gear 6, that is, drive the connecting plate 14 on the third rotating shaft 11 to rotate upward, and then drive the detection component 17 to move upward, thereby increasing the height of the detection component 17, and then avoiding the problem of the detection component 17 being damaged due to contact with obstacles on the ground. At the same time, when the contact between the baffle 9 and the obstacle is disengaged, at this time, under the action of the limiting spring 20, the connecting plate 14 will be driven to reset. Then, under the action of the third gear 12, the second gear 7 and the first gear 6, the baffle 9 will be driven to reset to the initial position, so that the baffle 9 is ready for the next contact with the obstacle. At the same time, the detection component 17 resets to the initial position (the height can be adjusted to the optimal detection height according to the different road surfaces), and continues the road flaw detection operation. Of course, it is not difficult to understand that the function of the limiting spring 20 is to drive the damping component 18 to quickly reset to the initial position by using its deformation ability. At the same time, under the action of the damping component 18, the horizontal initial position of the connecting plate 14 is limited, avoiding the connecting plate 14 rotating downward and at the same time buffering and damping the upward rotating force of the connecting plate 14, further protecting the detection component 17. Furthermore, the use of the damping component 18 and the spring can not only play a reset role, but also play a shock filtering role, ensuring the stability of the detection component 17 during operation.

[0020] The technical effects achieved by the above technical solution are as follows: Under the linkage action of the first gear 6, the second gear 7 and the third gear 12, when the baffle 9 is squeezed by an obstacle, the rotation of the baffle 9 will drive the connecting plate 14 to rotate, and then drive the detection component 17 to lift upward, thereby increasing the position of the detection component 17 and avoiding its contact with the obstacle, protecting the detection component 17. At the same time, under the action of the limiting spring 20, the baffle 9 and the detection component 17 can also be quickly reset to the working state.

[0021] In an implementable manner, the damping assembly 18 includes an outer sleeve 29. A retaining ring 28 is provided inside the outer sleeve 29. Above the retaining ring 28, there is a piston block 22. A number of first through holes 23 are provided in the middle of the piston block 22. Below the piston block 22, there is a connecting frame 26. One end of the connecting frame 26 is fixed to the piston block 22, and a piston rod 27 is provided at the other end of the connecting frame 26. Damping liquid 30 (hydraulic oil is fine) 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.

[0022] That is, when the connecting plate 14 rotates and thus squeezes the piston rod 27, the piston rod 27 will drive the piston block 22 to move upward, so that the upper damping liquid 30 passes through the first through holes 23, thereby playing a damping role.

[0023] In an implementable manner, a deflecting plate 24 is provided on the lower surface of the piston block 22. The edge of the deflecting plate 24 is rotatably connected to the piston block 22. The deflecting plate 24 completely covers the first through holes 23 provided on the piston block 22. A number of second through holes 25 are provided on the deflecting plate 24. The diameter of the second through holes 25 is smaller than the diameter of the first through holes 23, and the number of second through holes 25 are respectively located at the middle positions of the number of first through holes 23.

[0024] It is not difficult to understand that when the piston rod 27 moves upward under the action of the connecting plate 14, during the upward movement of the piston block 22 at this time, the damping fluid 30 passing through the first through hole 23 will push the deflecting plate 24 to turn downward, so that the hydraulic oil can pass through quickly, that is, the damping of the hydraulic oil passing through is reduced. The advantage of this method is that when the baffle 9 contacts the obstacle, only a small acting force is required to drive the baffle 9 to rotate, that is, it can drive the detection component 17 to quickly respond and move upward. At the same time, it can also reduce the contact acting force between the obstacle and the baffle 9 and reduce the overall movement resistance of the device. At the same time, under the action of the limiting spring 20, when driving the damping component 18 to reset, at this time, the piston block 22 moves downward. That is, under the action of the hydraulic oil, it will drive the deflecting plate 24 to reset and closely adhere to the piston block 22. At this time, the hydraulic oil can only move upward from the second through hole 25. Since the diameter of the second through hole 25 is smaller than that of the first through hole 23, it can play a role in increasing the damping, thereby delaying the reset speed of the damping component 18. It can be understood that the time for the height of the detection component 17 to return to the initial position is relatively long, such as 2 s. That is, under the action of the tractor, within 2 s, it will drive the detection component 17 to move a certain distance. Then, after the obstacle moves behind the detection component 17, it will reset to avoid the problem of collision between the detection component 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 without affecting the flipping of the deflecting plate 24. Of course, in this application, the retaining ring is used to limit the position of the piston block 22. Of course, it can also not be provided, and the closed end of the external sleeve 29 is used to contact the connecting frame 26 for limiting, which will not be elaborated here too much.

[0025] Of course, it is not difficult to understand that the diameter of the first through hole 23 is set to a size that only needs to satisfy that the damping fluid 30 can pass through quickly, while the diameter of the second through hole 25 is set to a size that can play a role in delaying the reset and slowing down the reset speed of the piston block 22. The advantage is that while enabling the detection component 17 to quickly respond and move upward, it can also avoid the problem of damage to the detection component 17 caused by contact with the obstacle during the reset process.

[0026] In an implementable manner, the detection component 17 is a camera component or a ground penetrating radar component. Of course, it can also be other flaw detection sensor components, which will not be elaborated here too much.

[0027] In an implementable manner, an inclined bracket 31 is provided on the first rotating shaft 4. One end of the inclined bracket 31 is fixed to the first rotating shaft 4, and a telescopic element 32 (electric or hydraulic telescopic rod) is provided at the other end of the inclined bracket 31. Both ends of the telescopic element 32 are hinged to the inclined bracket 31 and the side surface of the baffle 9 facing the fixed rod 15. A telescopic portion 16 is provided in the middle of the fixed rod 15 (which can be realized by threaded connection between an external pipe and an internal pipe, and will not be elaborated here too much).

[0028] The working principle of the above technical solution is as follows: Through the action of the telescopic element 32, the inclination degree of the baffle 9 can be adjusted, that is, the height of the lower part of the baffle 9 from the road surface can be adjusted, that is, the height when the baffle 9 contacts the obstacle can be adjusted. The function of setting the telescopic part 16 on the fixed rod 15 is to adjust the height of the detection component 17, that is, the height of the baffle 9 can be adjusted to match the height of the detection component 17, thereby changing the height when it contacts the obstacle. That is to say, when the height of the obstacle is less than the height of the detection component 17, the baffle 9 does not contact the obstacle, and the obstacle will not contact the detection component 17 either. That is, this setting method can ensure the continuous working effect of the detection component 17. If the height of the baffle 9 is not changed, obstacles with a lower height will also drive the detection component 17 to move upward, resulting in the problem of intermittent operation of the detection component 17.

[0029] In an implementable manner, a diagonal brace 19 is provided on the fixed rod 15, and both ends of the diagonal brace 19 are fixedly connected to the detection component 17 and the fixed rod 15 respectively. A hanging plate 2 is provided on the side surface of the mounting plate 1, and the hanging plate 2 is connected to the tractor. The diagonal brace 19 can ensure the connection effect on the detection component 17. At the same time, the setting of the hanging plate 2 can connect and fix this device to the tractor.

[0030] In an implementable manner, a purging component is provided on the baffle 9, and the purging component is used to clean the road surface on the moving path of the detection component 17. The purging component can be composed of a blower and an air outlet pipe. After the road surface is cleaned, the working effect of the detection component 17 is improved. Especially when the detection component 17 uses a camera component to take pictures of the ground, after the leaves or dust are purged, the problem of being blocked by tiny cracks on the road surface can be avoided.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A measuring device for road flaw detection, including a tractor, wherein a measuring mechanism is fixedly arranged behind the tractor, and is characterized in that: The measuring mechanism includes a mounting plate (1). Both ends of the mounting plate (1) are provided with first fixing blocks (3). A first rotating shaft (4) and a second rotating shaft (5) are arranged in parallel on the first fixing block (3). A first gear (6) and a second gear (7) are respectively fixed in the middle of the first rotating shaft (4) and the second rotating shaft (5). The first gear (6) and the second gear (7) are meshed. A connecting block (8) is arranged 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 to the other end of the connecting block (8). A second fixing block (10) is arranged on the mounting plate (1) behind the first fixing block (3). A third rotating shaft (11) is arranged on the second fixing block (10). A third gear (12) is arranged on the third rotating shaft (11). The third gear (12) and the second gear (7) are meshed. An installation frame (13) is arranged on the third rotating shaft (11). One end of the installation frame (13) is fixed to the third rotating shaft (11), and a connecting plate (14) is arranged at the other end of the installation frame (13). One end of the connecting plate (14) is fixed to the installation frame (13), and a vertically arranged fixing rod (15) is arranged at the other end of the connecting plate (14). A detection component (17) is arranged at one end of the fixing rod (15). A fixing plate (21) is arranged above the connecting plate (14). One end of the fixing plate (21) is connected to the mounting plate (1). A damping component (18) is arranged between the fixing plate (21) and the fixing rod (15). Both 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 arranged between the connecting plate (14) and the fixing plate (21). Both ends of the limiting spring (20) are respectively fixed to the fixing plate (21) and the connecting plate (14) for limiting the position of the connecting plate (14).

2. The measuring device for road flaw detection according to claim 1, characterized in that: The damping component (18) includes an outer sleeve (29). A retaining ring (28) is arranged inside the outer sleeve (29). A piston block (22) is arranged above the retaining ring (28). A plurality of first through holes (23) are arranged in the middle of the piston block (22). A connecting frame (26) is arranged 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 arranged at the other end of the connecting frame (26). Damping liquid (30) is arranged 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).

3. The measuring device for road flaw detection according to claim 2, characterized in that: A deflection plate (24) is provided on the lower surface of the piston block (22). The edge of the deflection plate (24) is rotatably connected to the piston block (22). The deflection plate (24) completely covers a first through hole (23) provided on the piston block (22). A plurality of second through holes (25) are provided on the deflection plate (24). The diameter of the second through holes (25) is smaller than the diameter of the first through hole (23), and the plurality of second through holes (25) are respectively located at the middle positions of the plurality of first through holes (23).

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

5. The measuring device for road flaw detection according to claim 1, characterized in that: An inclined bracket (31) is provided on the first rotating shaft (4). One end of the inclined bracket (31) is fixed to the first rotating shaft (4). A telescopic element (32) is provided at the other end of the inclined bracket (31). Both ends of the telescopic element (32) are hinged to one side surface of the inclined bracket (31) and the baffle (9) facing the fixed rod (15). A telescopic portion (16) is provided in the middle of the fixed rod (15).

6. The measuring device for road flaw detection according to claim 1, wherein: A diagonal brace (19) is provided on the fixed rod (15). Both ends of the diagonal brace (19) are respectively fixedly connected to the detection component (17) and the fixed rod (15).

7. A measuring device for road flaw detection according to claim 1, characterized in that: A hanging plate (2) is provided on the side surface of the mounting plate (1). The hanging plate (2) is connected to a tractor.

8. The measuring device for road flaw detection according to claim 1, wherein: A purging component is provided on the baffle (9). The purging component is used to clean the road surface on the moving path of the detection component (17).

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