Device and method for detecting compaction degree of highway subgrade and pavement

Abstract

The invention relates to the technical field of highway subgrade and pavement field detection, and provides a highway subgrade and pavement compactness detection device and method, the highway subgrade and pavement compactness detection device comprises a mobile base, a lifting mechanism arranged on the mobile base and a detector, a detection opening for the detector to pass through is formed in the movable base, and the lifting mechanism is used for driving the detector to lift; the detector comprises a detection carrier frame, a radar receiver, a TDR pulse generator and a plurality of probes, the radar receiver and the TDR pulse generator are both arranged on the detection carrier frame, the probes are arranged on the peripheral side of the detection carrier frame, and a thermodetector is further installed on each probe; a plurality of distance measuring devices are arranged at the bottom of the detection carrier frame, are arranged close to the probes, are in one-to-one correspondence with the probes, and are used for detecting the distance between the joints of the probes and the detection carrier frame and the ground to be detected. According to the invention, the accuracy of highway subgrade and pavement compactness detection can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of on-site detection of highway subgrade and pavement, and in particular to a device and method for detecting the compaction of highway subgrade and pavement. Background Art

[0002] The compaction of highway subgrade and pavement is one of the important indicators to ensure road quality and safety. Insufficient compaction will lead to premature cracks and settlement on the pavement, affecting the service life of the road and driving safety. Compaction refers to the ratio of the maximum dry density of the material after compaction to the maximum dry density measured under laboratory conditions, which reflects the degree of compaction of the material. In order to ensure that the subgrade and pavement have good bearing capacity and durability, its compaction must be tested by scientific methods to ensure that the construction quality meets the design requirements.

[0003] The related art discloses a roadbed compaction detection device, which includes a radar disc and a TDR pulse generator, the TDR pulse generator is installed on the radar disc, and also includes a probe, a thermometer and an electrode socket, the probe with a scale is installed on the four corners of the radar disc, the thermometer is installed on the probe, and the two positive and negative electrode sockets are arranged on the rear side of the TDR pulse generator. The present invention is very suitable for on-site testing of various materials, and there is no need to replace the equipment when testing different road surfaces. The operation is simple and convenient, and it is not affected by uneven material gradation and moisture content. It can measure the compaction of inorganic binder stabilized granular base, roadbed soil and asphalt pavement at different depths, and can locate the measurement pile number in real time. The measured data can be transmitted in real time, and it can also avoid damage to the road surface structure and have no impact on the environment.

[0004] However, in the process of using the above device for detection, if the road surface to be tested in the area where the device is placed is uneven, the length of some of the probes buried in the foundation will not be equal to the measured depth of the foundation in the measured area. The time when the electromagnetic wave emitted by the probe is received by the radar disk is closely related to the length of the probe buried in the foundation. The length of the probe buried in the foundation is not equal to the measured depth of the foundation in the measured area, which will lead to large differences in the dielectric constants of the foundation measured by multiple probes at the same position, resulting in large measurement errors. Summary of the invention

[0005] In order to improve the accuracy of highway roadbed and road surface compaction detection, the present application provides a highway roadbed and road surface compaction detection device and method.

[0006] On the one hand, the present application provides a device for detecting the compaction of a highway subgrade and a road surface, which adopts the following technical solution: A device for detecting compaction of a highway subgrade and road surface comprises a mobile base, a lifting mechanism and a detector arranged on the mobile base, wherein a detection port for the detector to pass through is provided on the mobile base, and the lifting mechanism is used to drive the detector to rise and fall; The detector comprises a detection carrier, a radar receiver, a TDR pulse generator and a measuring needle. The radar receiver and the TDR pulse generator are both arranged on the detection carrier. A plurality of measuring needles are arranged around the detection carrier. A temperature measuring instrument is also installed on the measuring needle. A plurality of distance measuring devices are arranged at the bottom of the detection carrier, the distance measuring devices are arranged close to the measuring needles, and the distance measuring devices correspond to the measuring needles one by one, and the distance measuring devices are used to detect the distance between the connection between the measuring needle and the detection carrier and the ground to be measured.

[0007] By adopting the above technical solution, when the spacing data detected by each distance measuring device is equal or the deviation is within the specified range, the length of the probe buried in the foundation to be measured is closest to the depth of the ground to be measured, and the dielectric constant data measured by each probe is least affected by the surface flatness of the foundation to be measured. The dielectric constant data at this time can be recorded to make the measured dielectric constant data more reliable. When the difference between the spacing data detected by each distance measuring device exceeds the specified range, it means that the surface flatness of the foundation where the detector is located is low and is not suitable for detection as a detection point. The detector can be moved to other locations for detection by moving the base, thereby improving the detection accuracy.

[0008] Optionally, scale lines are provided on the outer side wall of the measuring needle, and the measuring needle is detachably connected to the detection carrier.

[0009] By adopting the above technical solution, scale lines are provided on the outer wall of the measuring needle, which is convenient for reading the specific depth of the measuring needle inserted into the foundation; the measuring needle and the detection carrier are detachably connected, so that the measuring needle can be quickly replaced or repaired according to actual needs, thereby increasing the flexibility and applicability of the device.

[0010] Optionally, the detection carrier includes a carrier plate and a lifting bracket fixed on the carrier plate; The carrier plate includes a plurality of mounting rings, and an adjustment cylinder is fixed on one side of the mounting ring; One end of the measuring needle passes through the mounting ring of the adjusting cylinder in sequence, and the measuring needle is slidably arranged in the adjusting cylinder. A locking piece for locking the measuring needle is arranged on the adjusting cylinder.

[0011] By adopting the above technical solution, the design of the carrier plate ensures the stability of the detection carrier and improves the accuracy during the detection process. The use of the mounting ring and the adjustment cylinder enables the probe to freely adjust its position within a certain range, and the locking piece locks the position of the probe after adjustment, making the detection depth range of the probe wider.

[0012] Optionally, the locking member includes a locking substrate and a locking strip fixed to one side of the locking substrate, the locking strip is passed through the adjusting cylinder, and the locking strip is arranged perpendicular to the axis of the adjusting cylinder; The measuring needle comprises a needle head and a needle rod connected to each other. The needle rod is provided with an adjustment hole for accommodating the locking insert. A plurality of the adjustment holes are arranged at intervals along the length direction of the needle rod.

[0013] By adopting the above technical solution, the locking strip in the locking member can be inserted into the adjustment hole of the needle rod while passing through the adjustment tube, which can effectively fix the position of the probe after adjustment and prevent the probe from being displaced due to external factors during use. At the same time, multiple adjustment holes are arranged at intervals along the length of the needle rod, so that the probe can be fixed at different depths to meet different measurement requirements, thereby improving the applicability and flexibility of the detection device.

[0014] Optionally, the locking member further includes an anti-drop bolt, and two locking strips are arranged at intervals; The anti-dropping bolt is located at one end of the locking strip away from the locking base plate. After one end of the anti-dropping bolt passes through one of the locking strips, it is threadedly connected to the other locking strip.

[0015] By adopting the above technical solution, the anti-drop bolt in the locking member can effectively prevent the locking strip from falling off, ensuring that the measuring needle is firmly locked in the adjustment tube. When the position of the measuring needle needs to be adjusted, the locking strip can be released by loosening the anti-drop bolt, which is convenient for quickly unlocking and re-locking the measuring needle, thereby improving the convenience and stability of the device.

[0016] Optionally, the lifting mechanism includes a vertical slide rail, a connecting slide bar and a first driving member arranged on the mobile base, the connecting slide bar is slidably connected to the vertical slide rail, the first driving member is used to drive the connecting slide bar to slide along the vertical slide rail, and one end of the lifting bracket is fixedly connected to the connecting slide bar.

[0017] By adopting the above technical solution, the detector can be lifted and lowered smoothly, ensuring that the measuring needle maintains a suitable distance from the ground to be tested during the detection process, thereby improving the detection accuracy. At the same time, the design of the vertical slide rail and the connecting slide bar ensures the stability of the lifting process and prevents measurement errors caused by vibration. The addition of the first drive further improves the degree of automation, reduces human intervention, and improves work efficiency.

[0018] Optionally, a dust removal mechanism is also provided on the movable base, and the dust removal mechanism includes a dust removal brush and a driving assembly, the dust removal brush is located below the detection port, and the driving assembly is used to drive the dust removal brush to slide back and forth in a horizontal direction.

[0019] By adopting the above technical solution, it is possible to effectively remove debris such as gravel and stones below the detection port, ensure the cleanliness of the detection surface, reduce the impact of external factors on the detection results, and thus improve the detection accuracy and reliability.

[0020] Optionally, the driving assembly includes a horizontal slide rail, a connecting slide on the horizontal slide rail, and a second driving member; two horizontal slide rails are fixed at intervals at the bottom of the mobile base, and the connecting slide is slidably arranged on each of the horizontal slide rails, and the second driving member is used to drive the connecting slide to slide along the horizontal slide rail; The dust removal brush comprises a dust removal brush strip and cleaning bristles, wherein the cleaning bristles are fixed to a side of the dust removal brush strip away from the lifting mechanism; one end of the dust removal brush strip is fixed to one of the connecting slides, and the other end is fixedly connected to another of the connecting slides.

[0021] By adopting the above technical solution, the combined design of the horizontal slide rail, the connecting slide and the second drive member enables the dust removal brush to reciprocate in the horizontal direction, covering a wider cleaning area while ensuring uniform cleaning effect. The design of the dust removal brush bar and the cleaning bristles can effectively remove dust and debris on the road surface during the cleaning process, while preventing scratches or other damage to the road surface. This structure not only improves the cleaning efficiency, but also extends the service life of the equipment.

[0022] Optionally, the movable base is provided with a shielding cover, the lifting mechanism and the detector are both located inside the shielding cover, and an operating port is provided on the shielding cover, and the operating port can be opened and closed.

[0023] By adopting the above technical solution, the shielding cover can protect the components on the mobile base, and the enclosed space in the shielding cover can reduce the impact of external noise on the operation of the internal equipment, thereby improving the working stability of the equipment. In addition, the operation port opened on the shielding cover facilitates the operator to perform necessary manual intervention, such as adjusting the position of the equipment, replacing the probe, etc., which improves the convenience and flexibility of the equipment.

[0024] On the other hand, the present application provides a device for detecting the compaction of a highway subgrade and a road surface. The following technical solution is adopted: The above-mentioned highway subgrade and road surface compaction detection device is used to perform compaction detection.

[0025] In summary, the present application includes at least one of the following beneficial effects: 1. By arranging multiple distance measuring devices at the bottom of the detection carrier, the distance between the connection between the measuring needle and the detection carrier and the ground to be measured can be detected, ensuring that the insertion depth of each measuring needle is consistent and that the buried length of the measuring needle is closest to the detection depth, thereby improving the detection accuracy; 2. When it is detected that the distance data detected by each distance measuring device are equal or the deviation is within the specified range, the measurement error caused by the uneven surface of the foundation to be measured can be effectively reduced to ensure the reliability of the test data; 3. When it is detected that the difference between the distance data detected by each distance measuring device exceeds the specified range, the detector can be moved to another position for detection by moving the base, which further improves the accuracy and reliability of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the overall structure of the device for detecting the compaction degree of highway subgrade and pavement in Example 1 of the present application; Figure 2 is a schematic diagram of the detector structure of Example 1 of the present application; Figure 3 is a schematic diagram of the dust removal mechanism structure of Example 1 of the present application; Explanation of the reference numerals: 1. mobile base; 11. detection port; 2. lifting mechanism; 21. vertical slide rail; 22. first motor; 23. connecting slide bar; 24. driving screw rod; 3. detector; 31. carrier plate; 311. mounting ring; 312. ring plate; 32. lifting bracket; 33. adjusting cylinder; 34. radar receiver; 35. TDR pulse generator; 36. measuring needle; 361. needle head; 362. needle rod; 3621. adjusting hole; 4. thermometer; 5. locking piece; 51. locking base plate; 52. locking strip; 53. anti-drop bolt; 6. dust removal mechanism; 61. dust removal brush; 611. dust removal brush strip; 612. cleaning brush bristles; 62. driving assembly; 621. horizontal slide rail; 622. connecting slide table; 623. second motor; 7. shielding cover; 71. operation port; 72. operation door; 8. ranging sensor. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-3 This application is described in further detail.

[0028] Embodiment 1: The embodiment of the present application provides a device for detecting the compaction degree of a highway subgrade and a road surface.

[0029] refer to Figure 1, the detection device for the compaction degree of the roadbed and road surface provided in the embodiment of the present application comprises a mobile base 1, a lifting mechanism 2 and a detector 3 arranged on the mobile base 1. The lifting mechanism 2 comprises a vertical slide rail 21, a connecting slide bar 23 and a first driving member, the vertical slide rail 21 is welded and fixed on the mobile base 1, the connecting slide bar 23 is slidably connected to one side of the vertical slide rail 21, and the first driving member is fixed to one end of the vertical slide rail 21. The first driving member can be a motor, a hydraulic cylinder or other forms of power source to ensure that the detector 3 can be lifted and lowered smoothly in the vertical direction. In this embodiment, the first driving source is specifically set to a first motor 22, and a driving screw 24 is provided on one side of the vertical slide rail 21 on which the connecting slide bar 23 is installed, and the driving screw 24 is rotatably connected to the mobile base 1 through a bearing. The driving screw 24 passes through the vertical slide rail 21 and is threadedly connected to the connecting slide bar 23, and the output shaft of the first motor 22 is coaxially fixed with the driving screw 24. A detection port 11 is provided on the mobile base 1, and the detection port 11 is arranged near the vertical slide rail 21.

[0030] refer to Figure 2 , the detector 3 includes a detection carrier, a radar receiver 34, a TDR pulse generator 35 and a probe 36. The detection carrier includes a carrier plate 31 and a lifting bracket 32 ​​fixed on the carrier plate 31. One end of the lifting bracket 32 ​​is fixedly connected to the connecting slide 23. When the first motor 22 is started, the detector 3 can be driven to move in the vertical direction to pass through the detection port 11, ensuring that the detector 3 can be smoothly lifted and lowered in the vertical direction. The carrier plate 31 includes a ring plate 312 and a plurality of mounting rings 311 fixed to the circumference of the ring plate 312. The ring plate 312 is specifically configured as a rectangular ring, the mounting ring 311 is configured as a circular ring, and each of the four sides of the ring plate 312 corresponds to a mounting ring 311. Four probes 36 are provided corresponding to the mounting rings 311. The radar receiver 34 is specifically configured as a radar ring fixed to one side of the ring plate 312, and an adjustment cylinder 33 is fixed to the side of the mounting ring 311 close to the radar ring. One end of the measuring needle 36 passes through the adjustment tube 33 and the mounting ring 311 in sequence, and the measuring needle 36 slides in the adjustment tube 33. The adjustment tube 33 is provided with a locking member 5, which includes a locking substrate 51 and a locking strip 52 fixed to one side of the locking substrate 51, and the locking strip 52 is arranged perpendicular to the axis of the adjustment tube 33. In this embodiment, two locking strips 52 are arranged at intervals. The measuring needle 36 includes a needle head 361 and a needle rod 362 connected to each other. The needle rod 362 is provided with an adjustment hole 3621, and a plurality of adjustment holes 3621 are arranged at intervals along the length direction of the needle rod 362. The measuring needle 36 is slid according to the detection needs, so that the length of the measuring needle 36 below the carrier plate 31 meets the detection requirements; then the locking strip 52 is inserted into the adjustment tube 33, so that the locking strip 52 passes through the adjustment hole 3621 and then passes through the adjustment tube 33, so as to lock the installation position of the measuring needle 36. When in use, the lengths of each measuring needle 36 below the carrier plate 31 are the same.

[0031] refer to Figure 2 The locking member 5 further includes an anti-dropping bolt 53, and two locking strips 52 are specifically provided; the anti-dropping bolt 53 is located at one end of the locking strip 52 away from the locking base plate 51, and one end of the anti-dropping bolt 53 passes through one locking strip 52 and is threadedly connected to the other locking strip 52. Such a design can ensure the stability and reliability of the measuring needle 36 in the adjusting cylinder 33.

[0032] refer to Figure 2 and Figure 3 , scale lines are arranged on the outer wall of the measuring needle 36, and the scale lines can be laser etched or printed on the surface of the measuring needle 36, so as to facilitate reading the depth of the measuring needle 36 inserted into the foundation, and also facilitate adjusting the connection position between the needle rod 362 of the measuring needle 36 and the detection carrier. A thermometer 4 is also installed on the measuring needle 36. Four distance measuring devices are arranged at the bottom of the ring plate 312, and the distance measuring devices are arranged close to the measuring needle 36, and the distance measuring devices correspond one-to-one with the measuring needle 36; the distance measuring devices can detect the distance between the connection between the measuring needle 36 and the detection carrier and the ground to be measured. The distance measuring device is specifically configured as a distance measuring sensor 8. The distance measuring sensor 8 corresponds one-to-one with the measuring needle 36, and is used to detect the distance between the connection between the measuring needle 36 and the detection carrier and the ground to be measured.

[0033] The detector 3 also includes a wireless communication module, which is connected to the TDR pulse generator 35 and the radar receiver 34, and is used to transmit the detection data to the remote monitoring center in real time. The wireless communication module can be a Wi-Fi module, a Bluetooth module, a 4G / 5G module, etc. The wireless communication module can be integrated inside the detection carrier and communicate with an external device through an antenna. In other embodiments, the wireless communication module can also be connected to a mobile terminal, a PC or other monitoring equipment to realize real-time viewing and storage of detection data.

[0034] refer to Figure 1 A shielding cover 7 is fixed on the movable base 1, and the shielding cover 7 is sleeved outside the lifting mechanism 2 and the detector 3. An operation opening 71 is opened on the shielding cover 7, and an operation door 72 is arranged at the operation opening 71, and one side of the operation door 72 is rotatably connected to the shielding cover 7.

[0035] refer to Figure 3, a dust removal mechanism 6 is also provided on the mobile base 1, and the dust removal mechanism 6 includes a dust removal brush 61 and a driving assembly 62, and the dust removal brush 61 is located below the detection port 11. The driving assembly 62 includes a horizontal slide rail 621, a connecting slide 622 on the horizontal slide rail 621, and a second driving member; two horizontal slide rails 621 are fixed at intervals at the bottom of the mobile base 1, and a connecting slide 622 is slidably provided on each horizontal slide rail 621. In this embodiment, the driving assembly 62 is specifically configured as a linear slide module, and the second driving member is configured as a second motor 623. The dust removal brush 61 includes a dust removal brush strip 611 and cleaning bristles 612, and the cleaning bristles 612 are fixed to the side of the dust removal brush strip 611 away from the lifting mechanism 2; one end of the dust removal brush strip 611 is fixed to a connecting slide 622, and the other end is fixedly connected to another connecting slide 622. When in use, the bristles of the dust removal brush 61 are pressed against the ground to be tested; the second motor 623 is started to drive the dust removal brush strip 611 to remove the gravel, stones and other debris below the detection port 11.

[0036] The implementation principle of this embodiment 1 is as follows: the mobile base 1 drives the detector 3 to move to the area to be tested, and the first motor 22 is started to drive the detector 3 to descend through the detection port 11 so that each measuring needle 36 is inserted into the foundation to be tested. Each distance sensor 8 detects the distance between the connection between the measuring needle 36 and the detection carrier and the ground to be tested. When the distance data detected by each distance sensor 8 is equal or the deviation is within the specified range, the length of the measuring needle 36 buried in the foundation to be tested is closest to the depth of the ground to be tested. The dielectric constant data measured by each measuring needle 36 is least affected by the surface flatness of the foundation to be tested, and the dielectric constant and moisture content data at this time can be recorded. When the difference between the distance data detected by each distance sensor 8 exceeds the specified range, it means that the surface flatness of the foundation where the detector 3 is located is low and is not suitable for detection as a detection point. At this time, the detector 3 can be moved to other positions for detection by moving the base 1, thereby improving the detection accuracy.

[0037] Example 2 This embodiment provides a method for detecting the compaction degree of a highway subgrade and a road surface, the method comprising the following steps: S1. Move the mobile base into position: Move the mobile base 1 to the area to be tested and place it stably.

[0038] S2. Detector lifting: Start the lifting mechanism 2 to lower the detector 3 to a predetermined height.

[0039] S3, distance measurement detection: multiple distance measurement sensors 8 are used to detect the distance between the measuring needle 36 and the ground to be measured, to ensure that the distance data are equal or the deviation is within the specified range.

[0040] S4, probe insertion: after confirming that the spacing data meets the requirements, start the TDR pulse generator 35.

[0041] S5. Data collection: The dielectric constant and water content data of the location of the measuring needle 36 are collected through the radar receiver 34 and the TDR pulse generator 35.

[0042] S6. Data processing: Process the collected data and calculate the compaction degree of the foundation to be tested.

[0043] S7. Data transmission: The detection data is transmitted to the remote monitoring center in real time through the wireless communication module.

[0044] S8. Result analysis: Analyze the test data in the remote monitoring center and generate a test report.

[0045] S9, moving the base: If the detection result does not meet the requirements, move the detector 3 to another position by moving the base 1 and repeat the above steps until a suitable detection point is found.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for detecting the compaction of a highway subgrade and road surface, characterized in that: The device comprises a mobile base (1), a lifting mechanism (2) and a detector (3) arranged on the mobile base (1); the mobile base (1) is provided with a detection port (11) for the detector (3) to pass through; and the lifting mechanism (2) is used to drive the detector (3) to move up and down; The detector (3) comprises a detection carrier, a radar receiver (34), a TDR pulse generator (35) and a measuring needle (36); the radar receiver (34) and the TDR pulse generator (35) are both arranged on the detection carrier; a plurality of measuring needles (36) are arranged around the detection carrier; and a temperature measuring instrument (4) is also installed on the measuring needle (36); A plurality of distance measuring devices are arranged at the bottom of the detection carrier, the distance measuring devices are arranged close to the measuring needle (36), and the distance measuring devices correspond to the measuring needle (36) one by one, and the distance measuring devices are used to detect the distance between the connection between the measuring needle (36) and the detection carrier and the ground to be measured.

2. A device for detecting the compaction of a highway subgrade and road surface according to claim 1, characterized in that: The outer side wall of the measuring needle (36) is provided with scale lines, and the measuring needle (36) is detachably connected to the detection carrier.

3. A device for detecting the compaction of a highway subgrade and road surface according to claim 2, characterized in that: The detection carrier comprises a carrier plate (31) and a lifting bracket (32) fixed on the carrier plate (31); The carrier plate (31) comprises a plurality of mounting rings (311), and an adjustment cylinder (33) is fixed to one side of the mounting ring (311); One end of the measuring needle (36) passes through the mounting ring (311) of the adjusting cylinder (33) in sequence, and the measuring needle (36) is slidably arranged in the adjusting cylinder (33). A locking member (5) for locking the measuring needle (36) is arranged on the adjusting cylinder (33).

4. A device for detecting the compaction of a highway subgrade and road surface according to claim 3, characterized in that: The locking member (5) comprises a locking base plate (51) and a locking strip (52) fixed to one side of the locking base plate (51); the locking strip (52) is inserted through the adjusting cylinder (33), and the locking strip (52) is arranged perpendicular to the axis of the adjusting cylinder (33); The measuring needle (36) comprises a needle head (361) and a needle rod (362) connected to each other, the needle rod (362) is provided with an adjustment hole (3621) for accommodating the locking insert (52), and a plurality of the adjustment holes (3621) are arranged at intervals along the length direction of the needle rod (362).

5. A device for detecting the compaction of a highway subgrade and road surface according to claim 4, characterized in that: The locking member (5) further comprises an anti-drop bolt (53), and two locking strips (52) are arranged at intervals; The anti-dropping bolt (53) is located at one end of the locking strip (52) away from the locking base plate (51); one end of the anti-dropping bolt (53) passes through one locking strip (52) and is then threadedly connected to another locking strip (52).

6. A device for detecting the compaction of a highway subgrade and road surface according to claim 3, characterized in that: The lifting mechanism (2) comprises a vertical slide rail (21) arranged on the mobile base (1), a connecting slide bar (23) and a first driving member, wherein the connecting slide bar (23) is slidably connected to the vertical slide rail (21), and the first driving member is used to drive the connecting slide bar (23) to slide along the vertical slide rail (21), and one end of the lifting bracket (32) is fixedly connected to the connecting slide bar (23).

7. A device for detecting the compaction of a highway subgrade and road surface according to claim 1, characterized in that: The movable base (1) is also provided with a dust removal mechanism (6), the dust removal mechanism (6) comprising a dust removal brush (61) and a drive assembly (62), the dust removal brush (61) being located below the detection port (11), and the drive assembly (62) being used to drive the dust removal brush (61) to slide back and forth in a horizontal direction.

8. A device for detecting the compaction of a highway subgrade and road surface according to claim 7, characterized in that: The driving assembly (62) comprises a horizontal slide rail (621), a connecting slide platform (622) on the horizontal slide rail (621), and a second driving member; two horizontal slide rails (621) are fixed at intervals on the bottom of the mobile base (1), and each of the horizontal slide rails (621) is slidably provided with the connecting slide platform (622); the second driving member is used to drive the connecting slide platform (622) to slide along the horizontal slide rail (621); The dust removal brush (61) comprises a dust removal brush strip (611) and cleaning bristles (612); the cleaning bristles (612) are fixed to a side of the dust removal brush strip (611) away from the lifting mechanism (2); one end of the dust removal brush strip (611) is fixed to one of the connecting slides (622), and the other end is fixedly connected to another of the connecting slides (622).

9. A device for detecting the compaction of a highway subgrade and road surface according to claim 1, characterized in that: The movable base (1) has a shielding cover (7), the lifting mechanism (2) and the detector (3) are both located in the shielding cover (7), and an operating port (71) is provided on the shielding cover (7), and the operating port (71) can be opened and closed.

10. A device for detecting the compaction of a highway subgrade and road surface, characterized in that: A highway subgrade and pavement compaction detection device as described in any one of claims 1 to 9 is used to perform compaction detection.

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