An infrared thermal imager for detecting asphalt pavement

Abstract

The utility model discloses an infrared thermal imager for detecting asphalt pavement, including base and infrared thermal imager body, a plurality of support columns are fixedly installed to base bottom wall, the installation frame is fixedly installed to base upper end surface, the clamping frame is fixedly installed through the elevating system to the installation frame inner wall, two stable rods are fixedly installed to the clamping frame upper end surface, the limiting block is fixedly installed to two stable rods end part, two stable rods all slide and run through the installation frame, the double -end screw is rotatably installed to the clamping frame inner wall, the motor that is connected with double -end screw is fixedly installed to the clamping frame outer wall. The utility model discloses a clamping structure that sets up motor, double -end screw, mobile cover and clamping plate, can realize the clamping fixation of infrared thermal imager body of different width specifications, need not to be equipped with special support for different model equipment, has reduced the detection cost, has promoted the versatility of equipment.

Description

Technical Field

[0001] This utility model relates to the field of infrared thermal imager technology, and in particular to an infrared thermal imager for detecting asphalt pavement. Background Technology

[0002] An infrared thermal imager is a device that generates thermal images by capturing the infrared radiation emitted by an object. It can convert invisible heat into visual images and data and accurately measure the temperature value of an object's surface.

[0003] Currently, among the methods for detecting asphalt pavement defects, infrared thermal imaging technology has been increasingly widely used due to its advantages such as non-contact detection, fast detection speed, and ability to intuitively present the differences in internal temperature distribution of the pavement. However, existing infrared thermal imagers used for asphalt pavement detection have relatively simple bracket structures for fixing the infrared thermal imager during use. They are usually only compatible with specific specifications of equipment. When it is necessary to replace the infrared thermal imager body of different models and sizes, the fixing structure cannot be flexibly adjusted, resulting in poor adaptability. This leads to reduced versatility of the detection equipment, increased detection costs, and insufficient practicality. Therefore, it is necessary to redesign an infrared thermal imager for detecting asphalt pavement to address the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an infrared thermal imager for detecting asphalt pavements.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An infrared thermal imager for detecting asphalt pavement includes a base and an infrared thermal imager body. Multiple support columns are fixedly installed on the bottom wall of the base. A mounting frame is fixedly installed on the upper surface of the base. A clamping frame is fixedly installed on the inner wall of the mounting frame via a lifting mechanism. Two stabilizing rods are fixedly installed on the upper surface of the clamping frame. Limit blocks are fixedly installed at the ends of both stabilizing rods, and both stabilizing rods slide through the mounting frame. A double-ended screw is rotatably installed on the inner wall of the clamping frame. A motor connected to the double-ended screw is fixedly installed on the outer wall of the clamping frame. A limit rod is fixedly installed inside the clamping frame. Two movable sleeves are threaded onto the outer wall of the double-ended screw, and the limit rod slides through the two movable sleeves. Clamping plates are fixedly installed on the bottom walls of both movable sleeves via a connecting mechanism. The mounting plate is fixedly installed on the upper surface of the base.

[0006] Preferably, the lifting mechanism includes a cylinder fixedly installed on the inner wall of the mounting frame, and the telescopic end of the cylinder is fixedly connected to the upper end face of the clamping frame.

[0007] Preferably, the connecting mechanism includes a connecting rod fixedly installed on the bottom wall of the movable sleeve, and the end of the connecting rod is fixedly connected to the outer wall of the clamping plate.

[0008] Preferably, each of the support columns is fixedly equipped with a caster wheel on its bottom wall, and each caster wheel is a swivel wheel.

[0009] Preferably, both clamping plates are fixedly equipped with anti-slip pads that cooperate with the infrared thermal imager body, and both anti-slip pads are made of rubber.

[0010] Preferably, a display screen and a PLC controller are fixedly mounted on the outer wall of the mounting plate, and the PLC controller is electrically connected to the cylinder, the motor and the infrared thermal imager body respectively.

[0011] The beneficial effects of this utility model are: 1. By setting up a clamping structure consisting of a motor, a double-headed screw, a moving sleeve, and a clamping plate, it is possible to clamp and fix infrared thermal imager bodies of different widths, eliminating the need for dedicated brackets for different models of equipment, reducing testing costs, and improving the versatility of the equipment.

[0012] 2. By setting a cylinder as a lifting mechanism, the height of the infrared thermal imager can be flexibly adjusted to meet the height requirements of different detection scenarios, adapt to different road conditions and detection depth requirements, and improve the applicability of detection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an infrared thermal imager for detecting asphalt pavement proposed in this utility model; Figure 2 This is a schematic diagram of the structure of a side-view infrared thermal imager for detecting asphalt pavement proposed in this utility model; Figure 3 for Figure 1 A schematic diagram of the vertical section structure; Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the diagram.

[0014] In the diagram: 1. Base, 2. Support column, 3. Moving wheel, 4. Mounting frame, 5. Cylinder, 6. Clamping frame, 7. Stabilizing rod, 8. Limiting block, 9. Double-ended screw, 10. Motor, 11. Limiting rod, 12. Moving sleeve, 13. Connecting rod, 14. Clamping plate, 15. Anti-slip pad, 16. Infrared thermal imager body, 17. Mounting plate, 18. Display screen, 19. PLC controller. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-4 An infrared thermal imager for detecting asphalt pavement includes a base 1 and an infrared thermal imager body 16. Multiple support columns 2 are fixedly installed on the bottom wall of the base 1, and each support column 2 has a fixedly installed caster wheel 3. Each caster wheel 3 is a universal wheel. A mounting frame 4 is fixedly installed on the upper surface of the base 1. A clamping frame 6 is fixedly installed on the inner wall of the mounting frame 4 via a lifting mechanism. The lifting mechanism includes a cylinder 5 fixedly installed on the inner wall of the mounting frame 4. The telescopic end of the cylinder 5 is fixedly connected to the upper surface of the clamping frame 6. The cylinder 5 has the characteristics of fast response speed and smooth lifting, and can accurately control the lifting height of the clamping frame 6. The connection method uses bolts to ensure a firm connection and prevent the cylinder 5 from detaching from the clamping frame 6 during telescopic movement, ensuring the safety and stability of the lifting process.

[0017] Two stabilizing rods 7 are fixedly installed on the upper surface of the clamping frame 6. Limiting blocks 8 are fixedly installed at the ends of the two stabilizing rods 7. The two stabilizing rods 7 slide through the mounting frame 4. A double-ended screw 9 is rotatably installed on the inner wall of the clamping frame 6. A motor 10 connected to the double-ended screw 9 is fixedly installed on the outer wall of the clamping frame 6. A limiting rod 11 is fixedly installed inside the clamping frame 6. Two movable sleeves 12 are threadedly installed on the outer wall of the double-ended screw 9. The limiting rod 11 slides through the two movable sleeves 12. A clamping plate 14 is fixedly installed on the bottom wall of the two movable sleeves 12 through a connecting mechanism. The connecting mechanism includes a connecting rod 13 fixedly installed on the bottom wall of the movable sleeve 12. The end of the connecting rod 13 is fixedly connected to the outer wall of the clamping plate 14. The connecting rod 13 is made of metal round rod, which has good load-bearing capacity and can stably transmit the power of the movable sleeve 12, preventing breakage after long-term use and ensuring that the clamping plate 14 can move synchronously with the movable sleeve 12 to achieve effective clamping of the infrared thermal imager body 16.

[0018] Both clamping plates 14 have anti-slip pads 15 fixedly installed on their inner walls to cooperate with the infrared thermal imager body 16. Both anti-slip pads 15 are made of rubber, which has good elasticity and anti-slip performance. This can prevent the clamping plates 14 from directly and rigidly contacting the infrared thermal imager body 16, thus avoiding damage to the equipment shell, and can also increase friction to prevent the equipment from sliding during the detection process. An mounting plate 17 is fixedly installed on the upper surface of the base 1. A display screen 18 and a PLC controller 19 are fixedly installed on the outer wall of the mounting plate 17. The PLC controller 19 is electrically connected to the cylinder 5, the motor 10, and the infrared thermal imager body 16.

[0019] When using this invention, the inspector places the infrared thermal imager body 16 between the two clamping plates 14 inside the clamping frame 6, ensuring that the lens of the device faces the asphalt pavement to be inspected, and that the center of gravity of the infrared thermal imager body 16 is roughly aligned with the center of the clamping frame 6 to avoid center of gravity shift during subsequent clamping. Then, the inspector starts the motor 10 via the PLC controller 19 on the mounting plate 17. The output shaft of the motor 10 drives the double-headed screw 9 to rotate stably on the inner wall of the clamping frame 6. Because the threads at both ends of the double-headed screw 9 rotate in opposite directions, and the two moving sleeves 12 are constrained by the limiting rod 11... Unable to rotate with the screw, the two moving sleeves 12 will move synchronously towards each other along the axis of the double-headed screw 9. During the movement, the moving sleeves 12 will drive the two clamping plates 14 to gradually approach the infrared thermal imager body 16 through the connecting rod 13 at the bottom, until the rubber anti-slip pads 15 on the inner wall of the clamping plate 14 are tightly attached to the two outer shells of the infrared thermal imager body 16. At this time, the inspector judges that the clamping force has reached a suitable range that can fix the equipment without damaging the outer shell, and turns off the motor 10 to complete the clamping and fixing of the infrared thermal imager body 16, effectively preventing the equipment from shifting due to vibration or movement during the inspection process. Next, based on the actual condition of the asphalt pavement to be inspected, the inspector adjusts the working state of cylinder 5 through PLC controller 19. If it is necessary to raise the height of the infrared thermal imager body 16 to expand the detection range or to adapt to higher road surface protrusions, the telescopic end of the control cylinder 5 is slowly extended, pushing the clamping frame 6 to move upward along the inner wall of the mounting frame 4. During this process, the two stabilizing rods 7 at the upper end of the clamping frame 6 slide synchronously along the through hole of the mounting frame 4 to prevent the clamping frame 6 from tilting due to unilateral force, ensuring that the infrared thermal imager body 16 always remains horizontal. If it is necessary to lower the height to focus on minor cracks or depressions in the road surface, the telescopic end of the control cylinder 5 is retracted, driving the clamping frame 6 to move smoothly downward until the lens of the infrared thermal imager body 16 maintains the optimal detection distance with the road surface. Then, the cylinder 5 is turned off to complete the height adjustment. Afterwards, the inspector releases the braking device of the moving wheel 3 at the bottom of the support column 2, and pushes the base 1 to move the entire equipment along the asphalt road surface to the area to be inspected. Since the moving wheel 3 is a universal wheel, the direction of the equipment can be flexibly adjusted, and it can easily turn even in narrow roads or curves. When the equipment reaches the designated position, the braking device of the moving wheel 3 is locked again to prevent the equipment from accidentally sliding during the inspection process. At this time, the inspector starts the infrared thermal imager body 16 through the PLC controller 19. The equipment begins to collect the infrared radiation signal of the road surface and converts the signal into an electrical signal to be transmitted to the internal processing module. The processed infrared thermal imaging data is transmitted to the display screen 18 on the mounting plate 17 in real time. The inspector can intuitively observe the temperature distribution image of the road surface through the display screen 18: if there is a void in the road surface, the void area will show an obvious high temperature area in the image due to the obstruction of heat conduction. If there is a crack, the temperature at the crack will be significantly different from the surrounding road surface due to the air filling, forming a clear temperature fault. At the same time, the infrared thermal imager body 16 will automatically store the detection data in the internal storage module or transmit it to the external terminal through the data interface for convenient subsequent data processing and defect analysis. During the inspection process, if it is necessary to adjust the inspection angle or change the inspection area, the inspector can first release the brake of the moving wheel 3, push the equipment to the new position and relock it. If it is necessary to fine-tune the height, repeat the above cylinder 5 adjustment steps. There is no need to disassemble and fix the infrared thermal imager body 16 again. After the entire inspection work is completed, the inspector uses the PLC controller 19 to turn off the infrared thermal imager body 16 and the display screen 18 in sequence, then starts the motor 10 to reverse, driving the double-headed screw 9 to rotate in the opposite direction, so that the two moving sleeves 12 drive the clamping plate 14 to move in opposite directions, loosening the fixation on the infrared thermal imager body 16. Then, carefully take out the equipment and clean and maintain it. Finally, push the entire inspection equipment to the storage area, lock the moving wheel 3, and complete this asphalt pavement inspection operation.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An infrared thermal imager for detecting asphalt pavement, comprising a base (1) and an infrared thermal imager body (16), characterized in that, The base (1) has multiple support columns (2) fixedly installed on its bottom wall. The base (1) has an installation frame (4) fixedly installed on its upper surface. The inner wall of the installation frame (4) has a clamping frame (6) fixedly installed through a lifting mechanism. The upper surface of the clamping frame (6) has two stabilizing rods (7) fixedly installed. The ends of the two stabilizing rods (7) are fixedly installed with limit blocks (8). The two stabilizing rods (7) slide through the installation frame (4). The inner wall of the clamping frame (6) has a double-headed screw (9) rotatably installed. The outer wall of the clamping frame (6) has a motor (10) fixedly installed and connected to the double-headed screw (9). The clamping frame (6) has a limit rod (11) fixedly installed inside. The outer wall of the double-headed screw (9) has two moving sleeves (12) threadedly installed. The limit rod (11) slides through the two moving sleeves (12). The bottom walls of the two moving sleeves (12) are fixedly installed with clamping plates (14) through a connecting mechanism. The upper surface of the base (1) has an installation plate (17) fixedly installed.

2. The infrared thermal imager for detecting asphalt pavement according to claim 1, characterized in that, The lifting mechanism includes a cylinder (5) fixedly installed on the inner wall of the mounting frame (4), and the telescopic end of the cylinder (5) is fixedly connected to the upper end face of the clamping frame (6).

3. An infrared thermal imager for detecting asphalt pavement according to claim 2, characterized in that, The connecting mechanism includes a connecting rod (13) fixedly installed on the bottom wall of the movable sleeve (12), and the end of the connecting rod (13) is fixedly connected to the outer wall of the clamping plate (14).

4. An infrared thermal imager for detecting asphalt pavement according to claim 3, characterized in that, Each of the support columns (2) is fixedly equipped with a caster wheel (3) on its bottom wall, and each caster wheel (3) is a universal wheel.

5. An infrared thermal imager for detecting asphalt pavement according to claim 4, characterized in that, Both clamping plates (14) have anti-slip pads (15) fixedly installed on their inner walls to cooperate with the infrared thermal imager body (16). Both anti-slip pads (15) are made of rubber.

6. An infrared thermal imager for detecting asphalt pavement according to claim 5, characterized in that, The outer wall of the mounting plate (17) is fixedly mounted with a display screen (18) and a PLC controller (19). The PLC controller (19) is electrically connected to the cylinder (5), the motor (10) and the infrared thermal imager body (16).

Images