Highway pavement thickness detection device

Abstract

The utility model relates to the technical field of highway pavement thickness detection, in particular to a highway pavement thickness detection device. The highway pavement thickness detection device comprises a guide plate, two supporting frames, a servo motor, a screw rod, a sliding frame, a lifting plate, a contact wheel, a mounting plate, an identification plate and a scale plate, the two supporting frames are fixedly connected with the guide plate together, the servo motor is mounted on the guide plate, an output shaft of the servo motor is connected with the screw rod through a coupler, and the screw rod is connected with the sliding frame through the contact wheel. The sliding frame is slidably arranged on the guide plate and is in threaded connection with the lead screw, the lifting plate is slidably arranged on the sliding frame, the contact wheel is rotatably arranged on the lifting plate, the identification plate is fixedly connected to the top of the lifting plate, and the scale plate is arranged on the sliding frame. The contact wheel moves to drive the cleaning plate to move together, the cleaning plate cleans impurities such as broken stones and sand grains around the contact wheel, and it is avoided that the contact wheel rolls the impurities to cause jolt, and the accuracy of a detection result is affected.

Description

Technical Field

[0001] This utility model relates to the field of highway pavement thickness detection technology, and in particular to a highway pavement thickness detection device. Background Technology

[0002] Pavement thickness testing is a crucial step in ensuring road quality, safety, and durability. Accurate measurement of the thickness of each pavement layer allows for assessment of whether construction meets design requirements, prediction of pavement lifespan, and provides a scientific basis for maintenance and repair.

[0003] Patent publication number CN221218423U specifically relates to a highway pavement thickness detection device, including a frame; a placement plate with two rotating blocks rotatably connected to it, the two rotating blocks having the same rotation axis, and an adjusting screw threaded onto each rotating block. The adjusting screw is rotatably connected to a connecting block, which is rotatably connected to the frame, and the rotation axis of the connecting block is the same as that of the rotating blocks; and at least one level connected to the placement plate. While the aforementioned patent facilitates the detection of sample thickness using a measuring ruler, reducing measurement errors caused by the non-perpendicularity of the measuring ruler and the top wall of the placement plate during manual measurement, and uses a fixing component to easily fix the ruler's position, in actual testing, impurities such as gravel and sand on the road surface may be run over during frame movement, causing the equipment to vibrate. This vibration can interfere with the measurement process and thus affect the accuracy of the test results.

[0004] Therefore, a road surface thickness detection device with cleaning function is needed. Utility Model Content

[0005] In order to overcome the shortcomings of existing patents, which are prone to damage during actual testing due to impurities such as gravel and sand on the road surface, which may be crushed by the machine frame during movement, causing the equipment to vibrate and thus interfering with the measurement process and affecting the accuracy of the test results, this utility model provides a road surface thickness testing device with a cleaning function.

[0006] The technical solution is as follows: A highway pavement thickness detection device includes a guide plate, a support frame, a servo motor, a lead screw, a sliding frame, a lifting plate, a contact wheel, a marking plate, and a scale plate. Two support frames are fixedly connected to the guide plate. A servo motor is mounted on the guide plate, and the output shaft of the servo motor is connected to the lead screw via a coupling. A sliding frame is slidably mounted on the guide plate and threadedly connected to the lead screw. A lifting plate is slidably mounted on the sliding frame, and a contact wheel is rotatably mounted on the lifting plate. A marking plate is fixedly connected to the top of the lifting plate, and a scale plate is mounted on the sliding frame. The marking plate slides on the scale plate. The device also includes an installation plate and a cleaning plate. Installation plates are fixedly connected to both the front and rear sides of the contact wheel, and the two installation plates are used to mount the cleaning plate, which is in contact with the road surface.

[0007] Preferably, the device also includes a first contact switch, a second contact switch, a return spring, a fixed plate, a control module, and an alarm. The first contact switch is mounted on the scale plate, and the second contact switch is mounted on the sliding frame. The two ends of the return springs are respectively connected to the lifting plate and the sliding frame. The fixed plate is fixedly connected to the guide plate. The control module is mounted at the bottom of the fixed plate and is signal-connected to the first and second contact switches. The alarm is mounted at the top of the fixed plate and is electrically connected to the control module. The alarm can sound two different alarm sounds.

[0008] Preferably, the cleaning plate also includes a mounting bracket, a telescopic rod, a return spring, and a scraper. Mounting brackets are installed on both the left and right sides of the cleaning plate. A telescopic rod is slidably mounted on the mounting bracket. A return spring is connected between the telescopic rod and the mounting bracket. A scraper is fixedly connected to the telescopic rod and can contact the contact wheel.

[0009] As a preferred option, it also includes a level, which is mounted on the support frame.

[0010] Preferably, it also includes protective tubes, with two protective tubes fitted on the sliding frame. The protective tubes are telescopic, and the return spring is located inside the protective tubes.

[0011] Preferably, it also includes a counterweight, which is fixedly connected to the bottom of the support frame.

[0012] Compared with the prior art, the present invention provides a road surface thickness detection device with the following advantages: 1. The movement of the contact wheel drives the cleaning plate to move together. The cleaning plate cleans up the gravel, sand and other impurities around the contact wheel, avoiding the contact wheel from running over these impurities and causing bumps, thereby affecting the accuracy of the detection results.

[0013] 2. The different alarm sounds can quickly identify the current road conditions without relying on visual inspection, thus improving the efficiency and accuracy of detection.

[0014] 3. The scraper works in conjunction with the contact wheel to clean the mud and other impurities adhering to the contact wheel, preventing them from adhering to the contact wheel and thus preventing wear and extending its service life. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the servo motor, lead screw, and sliding frame of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the lifting plate, contact wheel, and mounting plate of this utility model.

[0018] Figure 4 This is a three-dimensional sectional view of contact switch one, contact switch two, and return spring of this utility model.

[0019] Figure 5 This is a three-dimensional sectional view of the telescopic rod, return spring, and scraper of this utility model.

[0020] Reference numerals: 1. Guide plate, 2. Support frame, 3. Servo motor, 4. Lead screw, 5. Sliding frame, 6. Lifting plate, 7. Contact wheel, 8. Mounting plate, 9. Cleaning plate, 10. Marking plate, 11. Scale plate, 12. Contact switch one, 13. Contact switch two, 14. Return spring, 15. Fixing plate, 16. Control module, 17. Alarm, 18. Mounting bracket, 19. Telescopic rod, 20. Reset spring, 21. Scraper, 22. Level, 23. Protective tube, 24. Counterweight. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: A highway pavement thickness detection device, please refer to... Figures 1-4The system includes a guide plate 1, a support frame 2, a servo motor 3, a lead screw 4, a sliding frame 5, a lifting plate 6, a contact wheel 7, a marking plate 10, and a scale plate 11. Two support frames 2 are fixedly connected to the guide plate 1. The servo motor 3 is bolted to the guide plate 1, and the output shaft of the servo motor 3 is connected to the lead screw 4 via a coupling. The sliding frame 5 is slidably mounted on the guide plate 1, and the sliding frame 5 is threadedly connected to the lead screw 4. The lifting plate 6 is slidably mounted on the sliding frame 5, and the lifting plate 6 is rotatably mounted with the contact wheel 7. A marker plate 10 is fixedly connected to the top of the 6th frame, and a scale plate 11 is set on the sliding frame 5. The marker plate 10 slides on the scale plate 11. Mounting plates 8 are fixedly connected to both the front and rear sides of the contact wheel 7. The two mounting plates 8 are connected together by bolts to set a cleaning plate 9. The cleaning plate 9 can contact the ground. A level 22 is set on the support frame 2 to ensure that the support frame 2 always remains horizontal and improves the measurement accuracy. A counterweight 24 is fixedly connected to the bottom of the support frame 2 to increase the stability of the entire device and prevent the device from shaking during the testing process.

[0023] When it is necessary to test the thickness of the road surface, the support frame 2 is placed horizontally on the mobile road, ensuring that the contact wheel 7 can contact the road surface. Then, the servo motor 3 is started. The output shaft of the servo motor 3 rotates, driving the lead screw 4 to rotate, causing the sliding frame 5 to move slowly to the left along the guide plate 1. The movement of the sliding frame 5 causes the contact wheel 7 to roll on the road surface. During the movement of the sliding frame 5, the movement of the contact wheel 7 causes the cleaning plate 9 to move together. The cleaning plate 9 cleans up the gravel, sand, and other impurities around the contact wheel 7, preventing the contact wheel 7 from running over these impurities and causing bumps, which would affect the accuracy of the test results. When the contact wheel 7 moves to a raised part of the road surface, the contact wheel 7 will be lifted upwards, thereby causing the lifting plate 6 to move upwards. The lifting plate 6 rises... The lifting plate 10 moves upward along the scale plate 11. By observing the scale markings on the upward movement of the lifting plate 10, the height of the road surface protrusion can be measured, and the degree of protrusion can be assessed. When the contact wheel 7 moves to the concave position of the road surface, the lifting plate 6 moves downward under its own weight, and drives the contact wheel 7 downward. At the same time, the lifting plate 10 also moves downward along the scale plate 11. By observing the scale markings on the downward movement of the lifting plate 10, the height of the concave position can be measured, and the degree of concavity can be assessed. Through the above process, the protrusions and concavities of the road surface can be accurately measured, thereby assessing the smoothness of the road surface. These data are crucial for assessing the quality, safety, and durability of the road, and can also be used to verify whether the construction meets the design requirements.

[0024] Example 2: Based on Example 1, please refer to... Figure 2 and Figure 4The scale plate 11 is equipped with a contact switch 12, and the sliding frame 5 is equipped with two contact switches 13. Two return springs 14 are fitted on the sliding frame 5, with their ends connected to the lifting plate 6 and the sliding frame 5 respectively. The return springs 14 ensure that the lifting plate 6 can quickly return to its original position. A fixed plate 15 is fixedly connected to the guide plate 1. A control module 16 is installed at the bottom of the fixed plate 15. The control module 16 is connected to the contact switches 12 and 13. An alarm 17 is installed at the top of the fixed plate 15. The alarm 17 is electrically connected to the control module 16 and can sound two different alarm sounds to facilitate quick identification of road conditions. Two protective tubes 23 are fitted on the sliding frame 5. The protective tubes 23 are retractable, and the return springs 14 are located inside the protective tubes 23 to protect the return springs 14 from external environmental influences.

[0025] When the contact wheel 7 moves to a raised position on the road surface, the contact wheel 7 will be pushed upward, causing the lifting plate 6 to move upward and press the contact switch 12, triggering the alarm 17, which will sound the first type of alarm sound. When the contact wheel 7 moves to a lower position on the road surface, the lifting plate 6 will move downward under its own weight and press the contact switch 13, triggering the alarm 17, which will sound the second type of alarm sound. Based on the different alarm sounds, the current road surface condition can be quickly identified without relying on visual inspection, thus improving the efficiency and accuracy of detection.

[0026] Please see Figure 4 and Figure 5 The cleaning plate 9 has mounting brackets 18 on both sides by bolts. A telescopic rod 19 is slidably mounted on the mounting bracket 18. A return spring 20 is connected between the telescopic rod 19 and the mounting bracket 18. A scraper 21 is fixedly connected to the telescopic rod 19. The scraper 21 can contact the contact wheel 7. The position of the scraper 21 can be flexibly adjusted by the telescopic rod 19. Under the action of the return spring 20, the scraper 21 is always kept in close contact with the contact wheel 7.

[0027] When using the thickness detection device, the scraper 21 works in conjunction with the contact wheel 7 to clean the mud and other impurities attached to the contact wheel 7, keeping the contact wheel 7 clean and preventing mud and other impurities from adhering to the contact wheel 7, thereby preventing wear on the contact wheel 7 and extending its service life.

[0028] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Therefore, all equivalent changes made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A highway pavement thickness detection device, comprising a guide plate (1), a support frame (2), a servo motor (3), a lead screw (4), a sliding frame (5), a lifting plate (6), a contact wheel (7), a mounting plate (8), an identification plate (10) and a scale plate (11), the two support frames (2) are fixedly connected together and are provided with the guide plate (1), the servo motor (3) is installed on the guide plate (1), the output shaft of the servo motor (3) is connected with the lead screw (4) through a shaft coupling, the sliding frame (5) is slidably arranged on the guide plate (1), the sliding frame (5) is threadedly connected with the lead screw (4), the lifting plate (6) is slidably arranged on the sliding frame (5), the lifting plate (6) is rotatably provided with the contact wheel (7), the lifting plate (6) is fixedly connected with the identification plate (10) at the top, the scale plate (11) is arranged on the sliding frame (5), and the identification plate (10) slides on the scale plate (11), characterized in that, It also includes the installation plate (8) and cleaning plate (9), the contact wheel (7) is fixedly connected with the installation plate (8) on both sides, and the two installation plates (8) are commonly installed with the cleaning plate (9), and the cleaning plate (9) can contact the road surface.

2. The highway pavement thickness detection device according to claim 1, wherein It also includes a contact switch (12), a contact switch (13), a return spring (14), a fixed plate (15), a control module (16) and an alarm (17), the scale plate (11) is provided with a contact switch (12), the sliding frame (5) is provided with two contact switches (13), the sliding frame (5) is provided with two return springs (14), the two ends of the return spring (14) are respectively connected with the lifting plate (6) and the sliding frame (5), the guide plate (1) is fixedly connected with the fixed plate (15), the bottom of the fixed plate (15) is provided with the control module (16), the control module (16) is signal connected with the contact switch (12) and the contact switch (13), the top of the fixed plate (15) is provided with the alarm (17), the alarm (17) is electrically connected with the control module (16), and the alarm (17) can ring two different alarm sounds.

3. The highway pavement thickness detection device according to claim 2, wherein It also includes a mounting bracket (18), a telescopic rod (19), a reset spring (20) and a scraper (21), the cleaning plate (9) is provided with the mounting bracket (18) on both sides, the telescopic rod (19) is slidably arranged on the mounting bracket (18), the reset spring (20) is connected between the telescopic rod (19) and the mounting bracket (18), the telescopic rod (19) is fixedly connected with the scraper (21), and the scraper (21) can contact the contact wheel (7).

4. The highway pavement thickness detection device according to claim 3, wherein It also includes a level (22), and the support frame (2) is provided with the level (22).

5. The highway pavement thickness detection device according to claim 4, wherein It also includes a protective tube (23), and the sliding frame (5) is provided with two protective tubes (23), the protective tube (23) can be telescopic, and the return spring (14) is located in the protective tube (23).

6. The highway pavement thickness detection device according to claim 5, wherein It also includes a counterweight (24), and the support frame (2) is fixedly connected with the counterweight (24).

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