Multifunctional pavement asphalt layer quality detection device

Abstract

The invention relates to a multifunctional pavement asphalt layer quality detection device, and relates to the technical field of thickness measurement, the multifunctional pavement asphalt layer quality detection device comprises a flat plate, one end of the flat plate is fixedly provided with a handrail, one side of the upper end of the flat plate is provided with a control module, the other side of the upper end of the flat plate is provided with a storage battery, and the inner wall of the lower end of the flat plate is provided with a double-shaft motor; driving wheels are fixed to the two driving ends of the double-shaft motor, two steering wheels are arranged on the other side of the flat plate, a sliding groove is formed in the middle of the upper end of the flat plate, and storage grooves are formed in the two sides of the upper end of the flat plate. The driving motor drives the threaded rod to rotate, on one hand, the effect of synchronous adjustment is achieved, the effect of improving the use convenience of the detection device is achieved, on the other hand, the effect of automatic protection is achieved, the effect of prolonging the service life of the detection device is achieved, and on the other hand, the effect of automatic cleaning is achieved. In the whole process, workers do not need to carry out additional cleaning operation, and the effect of improving the using effect of the detection device is achieved.

Description

Technical Field

[0001] This invention relates to the field of thickness measurement technology, specifically to a multifunctional pavement asphalt layer quality testing device. Background Technology

[0002] Asphalt concrete is a mixture that exhibits high-temperature flow and low-temperature hardening characteristics. At high temperatures, it possesses good ductility and plasticity, while its strength and stiffness increase as the temperature decreases, eventually forming a rough, dense road surface layer. Therefore, temperature is a crucial control indicator in the construction of asphalt concrete pavement layers. From the perspective of asphalt road performance, the most important indicator is the thickness of the asphalt surface layer, which directly determines the load-bearing capacity and service life of the asphalt pavement. It is a key control item for quality acceptance. Furthermore, to verify the density ratio of asphalt concrete, it is necessary to measure the thickness of the asphalt concrete during paving. Therefore, measuring the asphalt thickness is an essential task during the asphalt paving process. The smoothness of the asphalt pavement is related to the driving quality and safety of the asphalt pavement, and it is also a requirement for drainage. Therefore, testing the smoothness of the asphalt pavement is an essential testing indicator. Thus, when conducting quality testing on asphalt concrete, at least three indicators need to be tested: pavement temperature, pavement thickness, and pavement smoothness.

[0003] Comparing the patent document publication number "CN118857187B: A multifunctional pavement asphalt layer quality testing device, which determines the pavement smoothness by analyzing the stability of all ground distance data; and determines the pavement thickness of the route to be measured based on the principle of ultrasonic emission and reflection, combined with the amplitude changes and ultrasonic velocity of high-frequency ultrasonic wave data; finally, it determines the corresponding temperature anomaly degree based on the overall deviation of the temperature data on the route to be measured from the standard temperature; and finally, based on the characteristics of asphalt pavements with high road acceptance quality—high smoothness, high thickness, and temperature close to the standard temperature—it combines temperature anomaly degree, pavement smoothness, and pavement thickness to determine the corresponding more accurate road acceptance quality, making the quality testing of asphalt concrete more accurate and efficient."

[0004] The aforementioned patent still suffers from the following problems in practical use: During the testing process, operators need to operate the ultrasonic device and the thermocouple thermometer separately to adjust them to their appropriate working positions. Taking the ultrasonic device as an example, operators must meticulously adjust its installation angle, height, and relative position to the road surface according to the testing requirements to ensure the accuracy of ultrasonic wave transmission and reception, thereby obtaining effective high-frequency ultrasonic wave data and ground distance data. The adjustment of the thermocouple thermometer is equally cumbersome. Operators must not only accurately select the measurement point but also manually adjust the probe insertion depth according to the specific conditions of the measurement point to ensure that the thermocouple thermometer can accurately measure the asphalt pavement temperature, while avoiding measurement errors caused by excessive or insufficient insertion. This separate operation mode greatly increases the number of steps and workload for operators, and to some extent distracts them, easily leading to operational errors. Over time, this will significantly reduce testing efficiency and affect the progress of the entire testing work. Especially in large-scale road testing tasks, the lack of operational convenience will become even more prominent, severely restricting the widespread application of this testing device in actual engineering projects.

[0005] Therefore, it is necessary to invent a multifunctional road asphalt layer quality testing device to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a multifunctional asphalt pavement quality testing device to solve the problems mentioned in the background art.

[0007] To solve the above technical problems, the present invention provides the following technical solution: a multifunctional road asphalt layer quality testing device, comprising a plate, a handrail fixed to one end of the plate, a control module disposed on one side of the upper end of the plate, a battery disposed on the other side of the upper end of the plate, a dual-axis motor disposed on the inner wall of the lower end of the plate, a drive wheel fixed to both drive ends of the dual-axis motor, two steering wheels disposed on the other side of the plate, a sliding groove opened in the middle of the upper end of the plate, and storage grooves opened on both sides of the upper end of the plate;

[0008] A drive motor is fixed to the middle of one end of the plate, and a threaded rod is fixed to the drive end of the drive motor. A connecting structure is provided on the outer surface of the threaded rod, and an ultrasonic device and a thermocouple thermometer are provided on the connecting structure. The connecting structure can rotate the ultrasonic device around one end of the plate as an axis, and can also move the thermocouple thermometer along the height of the plate to simultaneously adjust the ultrasonic device and the thermocouple thermometer into position.

[0009] Preferably, the connecting structure includes a threaded sleeve, a fixed rod fixed to the upper end of the threaded sleeve, a connecting frame rotatably connected to the outer surface of the middle part of the fixed rod, a connecting block rotatably connected to the other end of the connecting frame, a rotating frame fixed to the other end of the connecting block, a stabilizing frame rotatably connected to the lower end of the rotating frame, an adjusting frame detachably installed on the inner wall of the rotating frame by bolts, an ultrasonic device provided on one side of the upper end of the adjusting frame, guide frames slidably connected to both outer surfaces of the fixed rod, a guide groove opened in the middle of each guide frame, a support frame fixed to the lower end of the two guide frames, a thermocouple thermometer detachably installed in the middle of the support frame by bolts, and a probe fixed to the lower end of the thermocouple thermometer.

[0010] Preferably, the threaded sleeve is threaded to the outer surface of the threaded rod at the middle, the outer surface of the threaded sleeve is slidably connected to the inner wall of the groove, the groove is opened at the middle of the upper end of the plate, the outer surface of the threaded rod is rotatably connected to the inner wall of the plate, the two sides of the fixing rod are fixed to the upper end of the threaded sleeve, and the vertical section of the threaded sleeve is U-shaped.

[0011] Preferably, one end of the connecting frame is rotatably connected to the outer surface of the middle part of the fixed rod, the other end of the connecting frame is rotatably connected to one end of the connecting block, the other end of the connecting block is fixed to the upper side of the rotating frame, the lower end of the rotating frame is rotatably connected to one end of the stabilizing frame, the other end of the stabilizing frame is fixed to the middle part of one end of the flat plate, and the outer surface of the adjusting frame is in contact with the inner wall of the rotating frame.

[0012] Preferably, the outer surfaces of both sides of the fixing rod are slidably connected to the inner walls of the two guide grooves, the two guide grooves pass through the middle of the two guide frames, the lower ends of the two guide frames are fixed to both ends of the support frame, the vertical cross-section of the support frame is U-shaped, the outer surface of the support frame is slidably connected to the inner wall of the storage groove, and the outer surfaces of the two guide frames are in contact with the inner wall of the storage groove.

[0013] Preferably, a connecting frame is rotatably connected to one side of the support frame, a connecting rod is rotatably connected to the other end of the connecting frame, a closed frame is fixed to the other end of the connecting rod, a slider is fixed to the upper end of the closed frame, and a limit groove is provided on one side of the lower end of the plate.

[0014] Preferably, one end of the connecting frame is rotatably connected to one side of the support frame, the other end of the connecting frame is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is fixed to one side of the enclosed frame.

[0015] Preferably, the upper end of the enclosure is fixed to the lower end of the slider, the outer surface of the slider is slidably connected to the inner wall of the limiting groove, the vertical section of the slider is T-shaped, and the probe is disposed inside the enclosure.

[0016] Preferably, a brush holder is rotatably connected to the inner wall of the enclosed frame, a gear is fixed to the lower end of the brush holder, the gear is meshed with a rack, and one side of the rack is fixed to one side of the support block.

[0017] Preferably, the outer surface of the brush holder is rotatably connected to the inner wall of the closed frame, the middle part of the gear is fixed to the lower end of the brush holder, the gear is meshed with the rack, one side of the rack is fixed to one side of the support block, one end of the support block is fixed to the lower end of the plate, the vertical section of the support block is L-shaped, and the outer surface of the support block is slidably connected to the inner wall of the closed frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] (1) The present invention drives the threaded rod to rotate by a drive motor, so that the threaded rod, threaded sleeve, fixed rod, connecting frame, connecting block, rotating frame, stabilizing frame, adjusting frame, ultrasonic device, guide frame, guide groove, support frame, thermocouple thermometer and probe work together to achieve synchronous adjustment. No staff need to operate them separately, which greatly simplifies the operation process and improves the ease of use of the detection device.

[0020] (2) The present invention drives the threaded rod to rotate by a drive motor, so that the connecting frame, connecting rod, closing frame, slider and limiting groove work together to achieve the effect of automatic protection, which can effectively prevent the probe from being damaged by bumps when not in use, thereby extending the service life of the detection device.

[0021] (3) The present invention drives the threaded rod to rotate by a drive motor, so that the closed frame, brush frame, gear, rack and support block work together to achieve the effect of automatic cleaning. The whole process does not require the staff to perform additional cleaning work, thereby improving the effect of the detection device. Attached Figure Description

[0022] Figure 1 This is an overall structural diagram of the present invention;

[0023] Figure 2 This is a cross-sectional view of the flat plate of the present invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged view of the structure of section A in the middle;

[0025] Figure 4 This is a schematic diagram of the guide frame structure of the present invention;

[0026] Figure 5 This is a partial structural diagram of the present invention;

[0027] Figure 6 For the present invention Figure 5 Enlarged view of the structure of section B in the middle;

[0028] Figure 7This is a schematic diagram of the brush holder structure of the present invention;

[0029] Figure 8 This is a cross-sectional view of the rotating frame of the present invention.

[0030] In the diagram: 1. Flat plate; 2. Handrail; 3. Control module; 4. Battery; 5. Dual-axis motor; 6. Drive wheel; 7. Steering wheel; 8. Slide groove; 9. Storage groove; 10. Drive motor; 11. Threaded rod; 12. Threaded sleeve; 13. Fixed rod; 14. Connecting frame; 15. Connecting block; 16. Rotating frame; 17. Stabilizing frame; 18. Adjusting frame; 19. Ultrasonic device; 20. Guide frame; 21. Guide groove; 22. Support frame; 23. Thermocouple thermometer; 24. Probe; 25. Connecting frame; 26. Connecting rod; 27. Enclosing frame; 28. Slider; 29. ​​Limiting groove; 30. Brush holder; 31. Gear; 32. Rack; 33. Support block. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] This embodiment provides a multifunctional road asphalt layer quality testing device;

[0034] Please see Figure 1 - Figure 8As shown, the device includes a flat plate 1, which supports the entire testing device. A handrail 2 is fixed to one end of the flat plate 1 for the operator's hand support. A control module 3 is located on one side of the upper part of the flat plate 1, and a battery 4 is located on the other side. The operation of the device is uniformly controlled by the control module 3, which is responsible for controlling the start-up and operation rhythm of the dual-axis motor 5, drive motor 10, thermocouple thermometer 23, and ultrasonic device 19, ensuring coordinated operation of all components. Simultaneously, the battery 4 provides power to the dual-axis motor 5, drive motor 10, thermocouple thermometer 23, and ultrasonic device 19. To provide stable power support and ensure the normal operation of all electronic components, a dual-axis motor 5 is installed on the inner wall of the lower end of the plate 1. Both drive ends of the dual-axis motor 5 are fixed with drive wheels 6. Two steering wheels 7 are installed on the other side of the plate 1. A sliding groove 8 is opened in the middle of the upper end of the plate 1, and storage grooves 9 are opened on both sides of the upper end of the plate 1. A drive motor 10 is fixed in the middle of one end of the plate 1. A threaded rod 11 is fixed to the drive end of the drive motor 10. A connecting structure is provided on the outer surface of the threaded rod 11, including a threaded sleeve 12. A fixing rod 13 is fixed to the upper end of the threaded sleeve 12, and a connecting frame 14 is rotatably connected to the outer surface of the middle part of the fixing rod 13. The other end of the connecting frame 14 is rotatably connected to the connecting block 15, and the other end of the connecting block 15 is fixed to the rotating frame 16. The lower end of the rotating frame 16 is rotatably connected to the stabilizing frame 17. The inner wall of the rotating frame 16 is detachably installed with the adjusting frame 18 by bolts. An ultrasonic device 19 is provided on one side of the upper end of the adjusting frame 18. The outer surfaces of both sides of the fixed rod 13 are slidably connected to the guide frame 20. Each guide frame 20 has a guide groove 21 in the middle. The lower ends of the two guide frames 20 are fixed to the support frame 22. Thermocouple thermometer 23 is detachably installed in the middle of the support frame 22 by bolts. The lower end of the thermocouple thermometer 23 is fixed with the probe 24.

[0035] Please refer to it again. Figure 1 - Figure 8As shown, the threaded sleeve 12 is threadedly connected to the outer surface of the threaded rod 11 in the middle. The outer surface of the threaded sleeve 12 is slidably connected to the inner wall of the slide groove 8, which is located in the middle of the upper end of the plate 1. The outer surface of the threaded rod 11 is rotatably connected to the inner wall of the plate 1. The fixing rod 13 is fixed to the upper end of the threaded sleeve 12 on both sides. The vertical section of the threaded sleeve 12 is U-shaped. One end of the connecting frame 14 is rotatably connected to the outer surface of the middle part of the fixing rod 13, and the other end of the connecting frame 14 is rotatably connected to one end of the connecting block 15. The other end of the connecting block 15 is fixed to the upper side of the rotating frame 16. The lower end of the 6 is rotatably connected to one end of the stabilizer 17, and the other end of the stabilizer 17 is fixed to the middle of one end of the plate 1. The outer surface of the adjusting frame 18 is in contact with the inner wall of the rotating frame 16. The outer surfaces of both sides of the fixing rod 13 are slidably connected to the inner walls of the two guide grooves 21. The two guide grooves 21 pass through the middle of the two guide frames 20. The lower ends of the two guide frames 20 are fixed to both ends of the support frame 22. The vertical section of the support frame 22 is U-shaped. The outer surface of the support frame 22 is slidably connected to the inner wall of the storage groove 9. The outer surfaces of the two guide frames 20 are in contact with the inner wall of the storage groove 9.

[0036] The specific implementation process is as follows: The threaded rod 11 is driven to rotate by the drive motor 10. The threaded sleeve 12, which is threaded to the outer surface of the threaded rod 11, will slide smoothly under the limiting action of the sliding groove 8 in the middle of the upper end of the plate 1. The sliding threaded sleeve 12 drives the fixed rod 13 fixed at its upper end to move synchronously. The moving fixed rod 13 is driven to rotate through the connecting frame 14 rotatably connected to its middle outer surface. The rotating frame 16 is driven to rotate under the support of the stable frame 17 fixed in the middle of one end of the plate 1 via the connecting block 15. The rotating frame 16 further drives the adjusting frame 18, which slides on the inner wall and can be adjusted by bolt removal, to rotate synchronously. Finally, the ultrasonic device 19 on the upper side of the adjusting frame 18 completes the rotation adjustment.

[0037] During this process, the outer surfaces on both sides of the fixed rod 13, with the cooperation of the two guide grooves 21, drive the two guide frames 20 to move synchronously downward under the limitation of the storage grooves 9 on both sides of the upper end of the plate 1. The downward moving guide frame 20 drives the support frame 22 fixed in the middle of its lower end to move downward along the storage groove 9, thereby driving the thermocouple thermometer 23, which is detachably installed in the middle of the support frame 22 by bolts, to complete the downward adjustment. This mechanical linkage structure realizes the synchronous adjustment of the ultrasonic device 19 and the thermocouple thermometer 23, achieving the effect of synchronous adjustment. It eliminates the need for separate operation by personnel, greatly simplifies the operation process, and thus improves the ease of use of the detection device.

[0038] Once the ultrasonic device 19 and the probe 24 of the thermocouple thermometer 23 are adjusted to their working positions, the testing process officially begins: the ultrasonic device 19 emits high-frequency ultrasonic waves and receives reflected signals. By calculating the sound wave propagation time difference and the known sound velocity, the road surface thickness is determined. Simultaneously, the amplitude change of the high-frequency ultrasonic wave pattern helps determine the uniformity of the asphalt layer material. After the probe 24 of the thermocouple thermometer 23 contacts the road surface, it utilizes the Seebeck effect of the metallic material to generate a thermoelectric potential. Combined with cold junction compensation technology, it accurately measures the road surface temperature and calculates the temperature anomaly. Furthermore, the multi-sensor array of the ultrasonic device 19 continuously scans the ground distance, evaluating the road surface smoothness through data stability analysis and comparison with a virtual reference surface. Finally, the system integrates the temperature anomaly, thickness deviation, and smoothness standard deviation according to preset weights to achieve a comprehensive judgment on the road acceptance quality.

[0039] Example 2

[0040] It should be noted that while the multifunctional asphalt pavement quality testing device with patent publication number CN118857187B is innovative in its testing function, it still has certain limitations in terms of protection. The probe of the thermocouple thermometer 23 is exposed and, due to the lack of protection, is easily damaged by bumps during daily transportation. Therefore, when the device is not in use, the probe needs to be protected to extend the service life of the testing device.

[0041] Please see Figure 1 - Figure 8 As shown, an automatic protection function has been added based on Embodiment 1;

[0042] Please refer to it again. Figure 1 - Figure 8 As shown, a connecting frame 25 is rotatably connected to one side of the support frame 22, and a connecting rod 26 is rotatably connected to the other end of the connecting frame 25. A closed frame 27 is fixed to the other end of the connecting rod 26. A slider 28 is fixed to the upper end of the closed frame 27. A limiting groove 29 is opened on one side of the lower end of the plate 1. One end of the connecting frame 25 is rotatably connected to one side of the support frame 22, and the other end of the connecting frame 25 is rotatably connected to one end of the connecting rod 26. The other end of the connecting rod 26 is fixed to one side of the closed frame 27. The upper end of the closed frame 27 is fixed to the lower end of the slider 28. The outer surface of the slider 28 is slidably connected to the inner wall of the limiting groove 29. The vertical section of the slider 28 is T-shaped. The probe 24 is set inside the closed frame 27.

[0043] The specific implementation process is as follows: The drive motor 10 drives the threaded rod 11 to rotate. The threaded sleeve 12, which is threaded to the outer surface of the threaded rod 11, drives the fixed rod 13 at the upper end. Through the cooperation of the guide groove 21, the guide frame 20 moves downward. The two guide frames 20 move downward, causing the support frame 22 at the lower end to move downward stably under the limit of the receiving groove 9. The support frame 22 moves downward stably, and the connecting rod 26 moves by means of the connecting frame 25 rotatably connected on one side. The moving connecting rod 26 then drives the closed frame 27 at the other end to move laterally in the limiting groove 29 opened on one side of the lower end of the plate 1 through the slider 28 fixed at the upper end. At this time, the closed frame 27 is away from the thermocouple thermometer 23 and will not affect the normal measurement operation of the thermocouple thermometer 23 and its connected probe 24.

[0044] When the support frame 22 moves upward, the connecting frame 25 moves synchronously with it and drives the connecting rod 26 to move in the opposite direction. This causes the closed frame 27 to move closer to the thermocouple thermometer 23 with the cooperation of the slider 28 and the limiting groove 29, thus forming a shield and protection for the thermocouple thermometer 23 and its probe 24. This achieves the effect of automatic protection and can effectively prevent the probe from being damaged by impact when not in use, thereby extending the service life of the detection device.

[0045] Example 3

[0046] It should be noted that the multifunctional road asphalt layer quality testing device with patent publication number CN118857187B, although innovative in testing function, still has certain limitations in cleaning. Since the probe is in contact with asphalt, dust and impurities will inevitably adhere to its surface after use, requiring additional cleaning by staff. Therefore, automatic cleaning of the probe is needed to improve the overall effectiveness of the testing device.

[0047] Please see Figure 1 - Figure 8 As shown, an automatic cleaning function has been added based on Embodiment 1;

[0048] Please refer to it again. Figure 1 - Figure 8 As shown, a brush holder 30 is rotatably connected to the inner wall of the closed frame 27. A gear 31 is fixed to the lower end of the brush holder 30. The gear 31 is meshed with a rack 32. One side of the rack 32 is fixed to one side of the support block 33. The outer surface of the brush holder 30 is rotatably connected to the inner wall of the closed frame 27. The middle part of the gear 31 is fixed to the lower end of the brush holder 30. The gear 31 is meshed with the rack 32. One side of the rack 32 is fixed to one side of the support block 33. One end of the support block 33 is fixed to one side of the lower end of the plate 1. The vertical section of the support block 33 is L-shaped. The outer surface of the support block 33 is slidably connected to the inner wall of the closed frame 27.

[0049] The specific implementation process is as follows: The drive motor 10 drives the threaded rod 11 to rotate. The threaded sleeve 12, which is threaded to the outer surface of the threaded rod 11, drives the fixed rod 13 at the upper end. Through the cooperation of the guide groove 21, the guide frame 20 moves downward. The two guide frames 20 move downward, causing the support frame 22 at the lower end to move steadily downward under the limit of the storage groove 9. The support frame 22 moves steadily downward, and the connecting rod 26 moves by means of the connecting frame 25 rotatably connected on one side. The moving connecting rod 26 then drives the closed frame 27 fixed at the other end to move laterally in the limiting groove 29 opened on one side of the lower end of the plate 1 through the slider 28 fixed at the upper end. At this time, the laterally moving closed frame 27 will drive the brush frame 30 rotatably connected to the inner wall to move synchronously.

[0050] The movable brush holder 30 drives the fixed gear 31 at the lower end to move together. Since the gear 31 meshes with the rack 32 fixed on the support block 33, and the support block 33 is fixed on one side of the lower end of the plate 1, while the rack 32 remains stationary, the movable gear 31 will rotate under the meshing action of the rack 32. The rotating gear 31 drives the fixed brush holder 30 in the middle to rotate as well. The rotating brush holder 30 can then clean the surface of the probe 24 of the thermocouple thermometer 23, achieving an automatic cleaning effect. The entire process does not require additional cleaning work by personnel, thereby improving the effectiveness of the detection device.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional pavement asphalt layer quality testing device, comprising a plate (1), characterized in that: One end of the plate (1) is fixed with a handrail (2), a control module (3) is provided on one side of the upper end of the plate (1), a battery (4) is provided on the other side of the upper end of the plate (1), a dual-axis motor (5) is provided on the inner wall of the lower end of the plate (1), a drive wheel (6) is fixed on both drive ends of the dual-axis motor (5), two steering wheels (7) are provided on the other side of the plate (1), a sliding groove (8) is provided in the middle of the upper end of the plate (1), and storage grooves (9) are provided on both sides of the upper end of the plate (1). A drive motor (10) is fixed at the middle of one end of the plate (1). A threaded rod (11) is fixed at the drive end of the drive motor (10). A connecting structure is provided on the outer surface of the threaded rod (11). An ultrasonic device (19) and a thermocouple thermometer (23) are provided on the connecting structure. The connecting structure can rotate the ultrasonic device (19) around one end of the plate (1) as an axis. On the other hand, it can move the thermocouple thermometer (23) along the height direction of the plate (1) so as to adjust the ultrasonic device (19) and the thermocouple thermometer (23) into position at the same time.

2. The multifunctional pavement asphalt layer quality testing device according to claim 1, characterized in that: The connection structure includes a threaded sleeve (12), a fixed rod (13) is fixed at the upper end of the threaded sleeve (12), a connecting frame (14) is rotatably connected to the outer surface of the middle part of the fixed rod (13), a connecting block (15) is rotatably connected to the other end of the connecting frame (14), a rotating frame (16) is fixed to the other end of the connecting block (15), a stabilizing frame (17) is rotatably connected to the lower end of the rotating frame (16), an adjusting frame (18) is detachably installed on the inner wall of the rotating frame (16) by bolts, an ultrasonic device (19) is provided on one side of the upper end of the adjusting frame (18), a guide frame (20) is slidably connected to the outer surfaces of both sides of the fixed rod (13), a guide groove (21) is opened in the middle of each guide frame (20), a support frame (22) is fixed to the lower end of the two guide frames (20), a thermocouple thermometer (23) is detachably installed in the middle of the support frame (22) by bolts, and a probe (24) is fixed to the lower end of the thermocouple thermometer (23).

3. The multifunctional pavement asphalt layer quality testing device according to claim 2, characterized in that: The threaded sleeve (12) is threaded to the outer surface of the threaded rod (11) in the middle. The outer surface of the threaded sleeve (12) is slidably connected to the inner wall of the slide groove (8). The slide groove (8) is opened in the middle of the upper end of the plate (1). The outer surface of the threaded rod (11) is rotatably connected to the inner wall of the plate (1). The two sides of the fixing rod (13) are fixed to the upper end of the threaded sleeve (12). The vertical section of the threaded sleeve (12) is U-shaped.

4. The multifunctional pavement asphalt layer quality testing device according to claim 2, characterized in that: One end of the connecting frame (14) is rotatably connected to the outer surface of the middle part of the fixed rod (13), and the other end of the connecting frame (14) is rotatably connected to one end of the connecting block (15). The other end of the connecting block (15) is fixed to the upper side of the rotating frame (16). The lower end of the rotating frame (16) is rotatably connected to one end of the stabilizing frame (17). The other end of the stabilizing frame (17) is fixed to the middle part of one end of the plate (1). The outer surface of the adjusting frame (18) is in contact with the inner wall of the rotating frame (16).

5. A multifunctional pavement asphalt layer quality testing device according to claim 2, characterized in that: The outer surfaces of the two sides of the fixing rod (13) are slidably connected to the inner walls of the two guide grooves (21). The two guide grooves (21) pass through the middle of the two guide frames (20). The lower ends of the two guide frames (20) are fixed to the two ends of the support frame (22). The vertical section of the support frame (22) is U-shaped. The outer surface of the support frame (22) is slidably connected to the inner wall of the storage groove (9). The outer surfaces of the two guide frames (20) are in contact with the inner wall of the storage groove (9).

6. The multifunctional pavement asphalt layer quality testing device according to claim 2, characterized in that: The support frame (22) is rotatably connected to a connecting frame (25) on one side, and a connecting rod (26) is rotatably connected to the other end of the connecting frame (25). A closing frame (27) is fixed to the other end of the connecting rod (26). A slider (28) is fixed to the upper end of the closing frame (27). A limit groove (29) is opened on one side of the lower end of the plate (1).

7. A multifunctional pavement asphalt layer quality testing device according to claim 6, characterized in that: One end of the connecting frame (25) is rotatably connected to one side of the support frame (22), and the other end of the connecting frame (25) is rotatably connected to one end of the connecting rod (26). The other end of the connecting rod (26) is fixed to one side of the closed frame (27).

8. A multifunctional pavement asphalt layer quality testing device according to claim 6, characterized in that: The upper end of the closed frame (27) is fixed to the lower end of the slider (28), the outer surface of the slider (28) is slidably connected to the inner wall of the limiting groove (29), the vertical section of the slider (28) is T-shaped, and the probe (24) is set inside the closed frame (27).

9. A multifunctional pavement asphalt layer quality testing device according to claim 6, characterized in that: The inner wall of the closed frame (27) is rotatably connected to a brush holder (30), and a gear (31) is fixed at the lower end of the brush holder (30). The gear (31) is meshed with a rack (32), and one side of the rack (32) is fixed to one side of the support block (33).

10. A multifunctional pavement asphalt layer quality testing device according to claim 9, characterized in that: The outer surface of the brush holder (30) is rotatably connected to the inner wall of the closed frame (27). The middle part of the gear (31) is fixed to the lower end of the brush holder (30). The gear (31) meshes with the rack (32). One side of the rack (32) is fixed to one side of the support block (33). One end of the support block (33) is fixed to the lower end of the plate (1). The vertical section of the support block (33) is L-shaped. The outer surface of the support block (33) is slidably connected to the inner wall of the closed frame (27).

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