Asphalt paving thickness detection device and asphalt paving thickness detection method

Abstract

The invention provides an asphalt paving thickness detection device and method, and relates to the technical field of road engineering, the asphalt paving thickness detection device comprises a mobile platform, the mobile platform is fixedly provided with a supporting frame, the supporting frame is internally provided with a bearing plate capable of performing lifting motion, the bearing plate is fixedly provided with a plurality of positioning sleeves, and the positioning sleeves are fixedly connected with the mobile platform. Calibration assemblies capable of moving up and down are arranged in the multiple positioning sleeves in a sleeved mode, and the calibration assemblies are used for being inserted into and calibrating the thickness of the asphalt mixture. Through cooperation of the mobile platform, the supporting frame, the bearing plate, the cross rod and the calibration assembly, along with movement of the mobile platform on a paving road section, the calibration rod and the calibration cylinder are driven to continuously and stably detect, the paving thickness of the asphalt mixture is detected through automatic operation, more time and labor are saved, rapid and continuous detection can be conducted, and the detection efficiency is improved. The detection efficiency is effectively improved, the operation is more convenient, and the detection intensity of operators is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of road engineering technology, and in particular to a device and method for detecting the thickness of asphalt paving. Background Technology

[0002] During the paving of asphalt mixtures, parameters such as the thickness of the loose layer and the longitudinal elevation have a significant impact on the performance and lifespan of the formed pavement. However, during construction, these parameters often deviate significantly from the specified technical requirements and exhibit considerable variability. Currently, the traditional method of using steel wire ropes to control asphalt thickness before paving may result in problems such as excessive or insufficient asphalt paving thickness.

[0003] In the existing technology, such as the Chinese patent with announcement number CN119162891A, a method for using a device for controlling the paving thickness of asphalt pavement in road engineering is disclosed, which includes a device for controlling the paving thickness of asphalt pavement in road engineering, which measures the paving thickness by inserting a measuring ruler into the bottom of the asphalt mixture.

[0004] However, the above technical solution still has at least the following drawbacks: the measuring device requires manual operation for each measurement, which is time-consuming and labor-intensive, and as the measuring ruler wears down, it will affect the accuracy of the asphalt mixture thickness detection. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, this invention discloses a device and method for detecting the thickness of paved asphalt, so as to solve the technical problem that the existing paved asphalt thickness detection cannot continuously detect the thickness.

[0006] The purpose of this invention is to provide a device for detecting the thickness of asphalt paving, including a mobile platform, a support frame fixedly installed on the mobile platform, a bearing plate installed inside the support frame, the bearing plate rising and falling within the support frame, and a plurality of positioning sleeves fixedly installed on the bearing plate.

[0007] Each of the positioning sleeves is fitted with a calibration component, which is used to insert and calibrate the thickness of the asphalt mixture after paving;

[0008] The calibration assembly includes a calibration rod for inserting into the asphalt mixture and a calibration cylinder for conforming to the upper surface of the asphalt mixture. The calibration cylinder is slidably sleeved on the calibration rod, and the bottom end of the calibration rod extends movably out of the bottom end of the calibration cylinder.

[0009] More preferably, electric push rods are fixedly installed on both sides of the bearing plate. The electric push rods are vertically distributed, and the top movable ends of the two electric push rods are synchronously connected to a crossbar. The calibration rod is installed on the crossbar and rises and falls with the crossbar. A level is fixedly installed on the crossbar.

[0010] More preferably, a fixing ring is fixedly installed on the crossbar, the body of the calibration rod passes through the fixing ring and a top plate is provided at the top, the diameter of the top plate is larger than the diameter of the calibration rod; a spring is sleeved on the calibration rod between the top plate and the fixing ring; the upper end of the spring is fixedly connected to the top plate and the lower end is fixedly connected to the fixing ring.

[0011] More preferably, a limiting ring is provided on the body of the calibration rod, and the limiting ring is constrained inside the calibration cylinder; the bottom end of the calibration rod is provided with a pointed end; the calibration cylinder is coaxially installed inside the positioning sleeve.

[0012] More preferably, the calibration rod is marked with scale lines, and a calibration ring is fitted on the outer ring surface of the calibration rod at the scale lines, with the calibration ring slidably mounted on the calibration rod.

[0013] More preferably, the bottom end of the calibration cylinder is provided with a bottom ring for conforming to the surface of the asphalt mixture. The outer diameter of the bottom ring is not greater than the inner wall of the positioning sleeve, and the inner diameter is not greater than the outer diameter of the limiting ring. A central hole is provided in the center of the bottom ring, and the hole diameter is not greater than the outer diameter of the tip. The calibration rod extends out of the calibration cylinder through the bottom ring.

[0014] More preferably, a guide rod is fixedly installed on one side of the support frame, and the guide rod passes through one end of the bearing plate;

[0015] A screw is rotatably mounted on the other side of the support frame, and the screw passes through the other end of the bearing plate and is threadedly connected to the bearing plate.

[0016] A motor is fixedly installed on the upper surface of the support frame, and the output end of the motor is coaxially connected to the top of the screw.

[0017] More preferably, a clearance opening is formed in the middle of the mobile platform, and a plurality of positioning sleeves are arranged in a linear array corresponding to the clearance opening, wherein the outer diameter of the plurality of positioning sleeves is smaller than the inner diameter of the clearance opening.

[0018] More preferably, inclinometers are fixedly installed on both sides of the support frame, and handrails are fixedly installed on both sides of the support frame; the handrails are located below the inclinometers; a control box is fixedly installed on one side of the mobile platform, and a storage box is fixedly installed on the other side of the mobile platform.

[0019] A method for detecting asphalt paving thickness using an asphalt paving thickness detection device, comprising the following steps: Asphalt mixture is paved on the road surface, and then the thickness is detected.

[0020] Step 1: Clear the route and place the mobile platform across the paved road surface;

[0021] Step 2, then, move to the designated position, and use the motor to drive the screw to rotate, lowering the bearing plate to the design height A, where height A is higher than the upper surface of the asphalt mixture;

[0022] Step 3: The crossbar is lowered by an electric push rod; as the crossbar descends, the calibration cylinder adheres to the upper surface of the asphalt mixture.

[0023] Continue lowering the calibration rod until it is inserted into the bottom of the asphalt mixture, and then observe the position of the scale line on the calibration cylinder;

[0024] Alternatively, the position of the calibration ring on the scale line can be preset before testing, and then the positional relationship between the calibration cylinder and the calibration ring can be observed.

[0025] Determine whether the paving thickness meets the standard and record it; this completes the inspection and judgment.

[0026] Beneficial effects:

[0027] Compared with existing technologies, this invention utilizes a mobile platform, support frame, bearing plate, crossbar, and calibration components. As the mobile platform moves along the paved section, it drives the calibration rod and calibration cylinder to continuously and stably perform testing. This automated operation detects the paving thickness of asphalt mixtures, saving time and labor. It enables rapid and continuous testing and allows for segmented testing according to usage requirements, effectively improving testing efficiency, making operation more convenient, and significantly reducing the testing intensity for workers. Furthermore, the insertion of the calibration rod into the asphalt mixture for testing effectively reduces the impact of wear on testing accuracy, making it more convenient to use. Attached Figure Description

[0028] Figure 1 This is a frontal axonometric structural schematic diagram of the present invention.

[0029] Figure 2 This is a front view structural diagram of the present invention.

[0030] Figure 3 This is a front-view cross-sectional structural diagram of the present invention.

[0031] Figure 4 This is a schematic diagram of the right-side cross-sectional structure of the present invention.

[0032] Figure 5 This is the invention Figure 3 Enlarged structural diagram at point A in the middle.

[0033] Figure 6 This is a cross-sectional structural diagram of the calibration rod, calibration cylinder, and positioning sleeve of the present invention.

[0034] Figure 7 This is a schematic diagram of the arrangement of multiple support frames according to the present invention.

[0035] Explanation of the labels in the attached diagram:

[0036] 1. Mobile platform; 2. Support frame; 3. Bearing plate; 4. Positioning sleeve; 5. Calibration rod; 6. Calibration cylinder; 7. Electric push rod; 8. Crossbar; 9. Level; 10. Fixing ring; 11. Top plate; 12. Spring; 13. Limiting ring; 14. Scale line; 15. Calibration ring; 16. Bottom ring; 17. Guide rod; 18. Screw; 19. Motor; 20. Clearance opening; 21. Inclinometer; 22. Handrail; 23. Control box; 24. Storage box. Detailed Implementation

[0037] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] Example 1

[0039] Depend on Figures 1 to 7 The present invention provides an embodiment of an asphalt paving thickness detection device, comprising a mobile platform 1, a support frame 2 fixedly installed on the mobile platform 1, a lifting and movable bearing plate 3 disposed inside the support frame 2, a plurality of positioning sleeves 4 fixedly installed on the bearing plate 3, and a lifting and movable calibration component fitted inside each of the plurality of positioning sleeves 4, the calibration component being used to insert and calibrate the thickness of the asphalt mixture.

[0040] The calibration assembly includes a calibration rod 5 for inserting into the asphalt mixture and a calibration cylinder 6 for conforming to the surface of the asphalt mixture. The calibration cylinder 6 is slidably sleeved on the calibration rod 5, and the bottom end of the calibration rod 5 can extend out of the bottom end of the calibration cylinder 6.

[0041] The calibration component is adjusted to be close to the top of the asphalt mixture by raising and lowering the support plate 3. Then, as the calibration component descends, the calibration rod 5 drives the calibration cylinder 6 to adhere to the surface of the asphalt mixture. The calibration rod 5 continues to descend, extending beyond the bottom end of the calibration cylinder 6 and inserting into the bottom of the asphalt mixture. During this process, the calibration cylinder 6 moves upward relative to the calibration rod 5. The calibration rod 5 stops after inserting into the bottom of the asphalt mixture, and the calibration cylinder 6 also stops relative to it. The distance moved by the calibration cylinder 6 is displayed by the calibration rod 5, and the thickness of the asphalt mixture is marked by the scale line 14. As the moving platform 1 moves along the paved section, it drives the calibration rod 5 to continuously and stably perform the detection. This automated operation to detect the paving thickness of the asphalt mixture is more time-saving and labor-saving, enabling rapid and continuous detection. It can also perform segmented detection according to usage requirements, effectively improving detection efficiency, making operation more convenient, and greatly reducing the detection intensity of operators. Furthermore, the insertion of the calibration rod 5 into the asphalt mixture for detection can effectively reduce the impact of wear on detection accuracy, making it more convenient to use.

[0042] Mobile platform 1 can utilize a four-wheel drive chassis and can be moved manually or by an electric motor. Its detailed mechanical structure and working principle will not be elaborated upon in this document. During operation, mobile platform 1 traverses the paved road section, with its wheels positioned on either side of the asphalt mixture. This allows it to effectively span the entire road section during testing, improving both testing efficiency and accuracy. Of course, mobile platform 1 can also be mounted on other paving equipment, enabling simultaneous paving and testing operations and further ensuring construction progress. It should be understood that the overall size of the testing device is limited, generally not exceeding the height of an adult. Therefore, the testing device can be flexibly loaded according to actual operational needs.

[0043] In one embodiment of a paving asphalt thickness detection device, electric push rods 7 are fixedly installed on both sides of the bearing plate 3. The movable ends of the two electric push rods 7 are fixedly installed on the crossbar 8. The calibration rod 5 is mounted on the crossbar 8 in a lifting and lowering motion. A level 9 is fixedly installed on the crossbar 8.

[0044] In these embodiments, the fixed end of the electric actuator 7 is fixedly mounted on the bearing plate 3, and its telescopic movable end is fixedly connected to the crossbar 8. The synchronous movement of the two electric actuators 7 drives the crossbar 8 to rise and fall, ensuring that the crossbar 8 is effectively horizontal, thereby ensuring that the calibration rod 5 can be vertically inserted into the asphalt mixture. Furthermore, two levels 9 mounted on the surface of the crossbar 8 can further detect its usage status, facilitating timely and effective correction. The mechanical structure and working principle of the electric actuators 7 and levels 9 are existing technologies, so their detailed mechanical structure and working principle will not be described in detail in this paper.

[0045] In some embodiments of a paving asphalt thickness detection device, a fixing ring 10 is fixedly installed on the crossbar 8, a calibration rod 5 passes through the fixing ring 10, a top plate 11 is formed at the top of the calibration rod 5, and a spring 12 sleeved on the calibration rod 5 is fixedly connected between the top plate 11 and the fixing ring 10.

[0046] In these embodiments, fixing rings 10 are sequentially distributed on the crossbar 8, and calibration rods 5 are arranged in a row after passing through the fixing rings 10. Then, the top plate 11 of the calibration rod 5 and the fixing rings 10 are connected by springs 12. When the calibration rod 5 is lowered for testing, the spring 12 changes from the initial compressed state to the stretched state. Specifically, as the crossbar 8 drives the calibration rod 5 to descend, the calibration cylinder 6 first adheres to the surface of the asphalt mixture. Then, the crossbar 8 continues to descend, and the spring 12 (tension) drives the calibration rod 5 to continue to descend. When the calibration rod 5 is inserted into the bottom of the asphalt mixture, the crossbar 8 descends to the height where it is pulling the spring 12. That is, the crossbar 8 pulls the spring 12, and under the action of the elastic force of the spring 12, it pulls the calibration rod 5 into the asphalt mixture. At this time, it is ensured that each calibration rod 5 can be inserted into the bottom of the asphalt mixture, and the calibration cylinder 6 is attached to the surface of the asphalt mixture. The thickness of the asphalt mixture is indicated by the distance that the calibration cylinder 6 moves on the calibration rod 5. For example, when the paving thickness is relatively thick in one area, after all the calibration rods 5 are inserted into the bottom of the asphalt mixture, the calibration cylinder 6 at this point will be higher than the other calibration cylinders 6. This can also be used as one of the criteria for judging the thickness.

[0047] In some embodiments of a paving asphalt thickness detection device, a limiting ring 13 is formed in the middle of the calibration rod 5, and the inner top wall of the calibration cylinder 6 is engaged with the limiting ring 13.

[0048] In these embodiments, the calibration cylinder 6 can be snapped onto the calibration rod 5 by the limiting ring 13 protruding from the middle of the calibration rod 5. That is, when not being tested, the calibration cylinder 6 is suspended on the calibration rod 5. As the calibration rod 5 is inserted into the asphalt mixture, the calibration cylinder 6 gradually moves upward to detect the thickness of the asphalt mixture paving.

[0049] In some embodiments of a paved asphalt thickness detection device, a scale line 14 is formed on the calibration rod 5, and a calibration ring 15 is fitted on the outer ring surface of the calibration rod 5 at the scale line 14.

[0050] In these embodiments, the distance the calibration cylinder 6 moves can be further clarified by the scale line 14, thereby displaying the paving thickness. The calibration ring 15 is slidably mounted on the calibration rod 5, and the two can be in a damped fit. The calibration cylinder 6 can push the calibration ring 15 to move on the calibration rod 5. Before testing, the calibration ring 15 is pre-adjusted at the test scale line 14, and then during the test, it is observed whether the calibration cylinder 6 is in contact with the calibration ring 15. This allows for a preliminary judgment on whether the paving thickness is qualified, which can also be used as one of the judgment criteria. Through the cooperation of the calibration ring 15, the scale line 14, and the calibration cylinder 6, the paving thickness can be detected quickly and effectively, making it more flexible and convenient to use.

[0051] In some embodiments of a paving asphalt thickness detection device, a bottom ring 16 for adhering to the surface of the asphalt mixture is formed at the bottom end of the calibration cylinder 6, and a pointed cone is formed at the bottom end of the calibration rod 5, which extends out of the calibration cylinder 6 through the bottom ring 16.

[0052] In these embodiments, the bottom ring 16 ensures that the calibration cylinder 6 can be stably attached to the surface of the asphalt mixture, and the pointed cone at the bottom of the calibration rod 5 ensures that the calibration rod 5 can be stably inserted into the asphalt mixture, which makes the testing operation more convenient.

[0053] In some embodiments of a paving asphalt thickness detection device, a guide rod 17 is fixedly installed on one side of the support frame 2, the guide rod 17 passes through one end of the bearing plate 3, and a screw 18 is rotatably installed on the other side of the support frame 2, the screw 18 passes through the other end of the bearing plate 3 and is threadedly connected to the bearing plate 3. A motor 19 is fixedly installed on the upper surface of the support frame 2, and the output end of the motor 19 is fixedly installed with the screw 18.

[0054] In these embodiments, both the upper and lower ends of the guide rod 17 are fixedly mounted on the support frame 2, and the screw 18 is rotatably mounted on the support frame 2. The motor 19 drives the screw 18 to rotate, and then, in conjunction with the guiding and supporting effect of the guide rod 17, drives the bearing plate 3 to move up and down, thereby enabling efficient and stable adjustment of the position of the bearing plate 3, making operation convenient and efficient.

[0055] In some embodiments of a paving asphalt thickness detection device, a clearance opening 20 is formed in the middle of the mobile platform 1, and a plurality of positioning sleeves 4 are arranged in a linear array corresponding to the clearance opening 20, and all of the positioning sleeves 4 can pass through the clearance opening 20.

[0056] In these embodiments, the clearance opening 20 ensures that the calibration rod 5 and calibration cylinder 6 can pass smoothly, thereby stably detecting the asphalt mixture. Furthermore, when necessary, the positioning sleeve 4 can be made to fit against the surface of the asphalt mixture, further improving the safety and reliability of the detection.

[0057] In some embodiments of a paved asphalt thickness detection device, slope gauges 21 are fixedly installed on both sides of the support frame 2, and handrails 22 are fixedly installed on both sides of the support frame 2.

[0058] In these embodiments, the inclinometer 21 allows for timely observation of whether the tilt state of the detection device matches the road surface tilt requirements, thereby improving the accuracy of the detection. Furthermore, the handrail 22 facilitates movement of the detection device, making it easier for operators to use. Additionally, a light source can be installed on the inner top wall of the support frame 2 for convenient use.

[0059] In some embodiments of a paving asphalt thickness detection device, a control box 23 is fixedly installed on one side of the mobile platform 1, and a storage box 24 is fixedly installed on the other side of the mobile platform 1.

[0060] In these embodiments, the operation of the detection device is controlled by the control box 23, which is convenient and efficient to operate, and the tools can be stored and retrieved through the storage box 24, providing more convenience for the detection.

[0061] One method of using this invention is to place the mobile platform 1 across the paved road surface, and then drive the screw 18 to rotate via the motor 19, lowering the bearing plate 3 to an appropriate height A. The height of the asphalt mixture after paving is within the range of the execution standard, and height A is greater than the limit execution standard value. Then, the electric push rod 7 drives the crossbar 8 to descend. As the crossbar 8 descends, the calibration cylinder 6 adheres to the surface of the asphalt mixture, and continues to descend until the calibration rod 5 inserts into the bottom of the asphalt mixture. The paving thickness is then determined by observing the position of the calibration cylinder 6 at the scale line 14. Alternatively, the position of the calibration ring 15 at the scale line 14 can be preset before testing, and the testing and judgment can be completed by observing the positional relationship between the calibration cylinder 6 and the calibration ring 15.

[0062] To further improve detection efficiency, multiple support frames 2 can be arranged side by side, such as... Figure 7 As shown, three support frames 2 are arranged side by side, each equipped with several calibration components. This array of calibration components further improves detection efficiency and makes the system more suitable for detecting long road sections.

[0063] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for detecting the thickness of asphalt paving, characterized in that: Includes a mobile platform (1), on which a support frame (2) is fixedly installed, and a bearing plate (3) is installed inside the support frame (2). The bearing plate (3) moves up and down inside the support frame (2), and several positioning sleeves (4) are fixedly installed on the bearing plate (3). A calibration component is fitted inside several positioning sleeves (4). The calibration component is used to insert and calibrate the thickness of the asphalt mixture after paving. The calibration assembly includes a calibration rod (5) for inserting into the asphalt mixture and a calibration cylinder (6) for conforming to the upper surface of the asphalt mixture. The calibration cylinder (6) is slidably sleeved on the calibration rod (5), and the bottom end of the calibration rod (5) extends movably out of the bottom end of the calibration cylinder (6).

2. The asphalt paving thickness detection device according to claim 1, characterized in that: Electric push rods (7) are fixedly installed on both sides of the bearing plate (3). The electric push rods (7) are vertically distributed. The top movable ends of the two electric push rods (7) are synchronously connected to the crossbars (8). The calibration rod (5) is installed on the crossbars (8) and rises and falls with the crossbars (8). A level (9) is fixedly installed on the crossbars (8).

3. The asphalt paving thickness detection device according to claim 1, characterized in that: A fixing ring (10) is fixedly installed on the crossbar (8). The body of the calibration rod (5) passes through the fixing ring (10) and a top plate (11) is provided at the top. The diameter of the top plate (11) is larger than the diameter of the calibration rod (5). A spring (12) is sleeved on the calibration rod (5) between the top plate (11) and the fixing ring (10). The upper end of the spring (12) is fixedly connected to the top plate (11), and the lower end is fixedly connected to the fixing ring (10).

4. The asphalt paving thickness detection device according to claim 3, characterized in that: The calibration rod (5) is provided with a limiting ring (13) on its body, and the limiting ring (13) is constrained in the calibration cylinder (6); the bottom end of the calibration rod (5) is provided with a pointed end; the calibration cylinder (6) is coaxially installed in the positioning sleeve (4).

5. The asphalt paving thickness detection device according to claim 4, characterized in that: The calibration rod (5) is marked with a scale line (14). A calibration ring (15) is fitted on the outer ring surface of the calibration rod (5) and the calibration ring (15) is slidably mounted on the calibration rod (5).

6. The asphalt paving thickness detection device according to claim 1, characterized in that: The bottom end of the calibration cylinder (6) is provided with a bottom ring (16) for adhering to the surface of the asphalt mixture. The outer diameter of the bottom ring (16) is not greater than the inner wall of the positioning sleeve (4), and the inner diameter is not greater than the outer diameter of the limiting ring (13). The bottom ring (16) has a central hole at its center, and the hole diameter is not greater than the outer diameter of the tip. The calibration rod (5) extends out of the calibration cylinder (6) through the bottom ring (16).

7. The asphalt paving thickness detection device according to claim 1, characterized in that: A guide rod (17) is fixedly installed on one side of the support frame (2), and the guide rod (17) passes through one end of the bearing plate (3); A screw (18) is rotatably installed on the other side of the support frame (2). The screw (18) passes through the other end of the bearing plate (3) and is threadedly connected to the bearing plate (3). A motor (19) is fixedly installed on the upper surface of the support frame (2), and the output end of the motor (19) is connected to the top of the screw (18) on the same axis.

8. The asphalt paving thickness detection device according to claim 1, characterized in that: The mobile platform (1) has a clearance opening (20) in the middle, and a number of positioning sleeves (4) are arranged in a linear array corresponding to the clearance opening (20). The outer diameter of the number of positioning sleeves (4) is smaller than the inner diameter of the clearance opening (20).

9. The asphalt paving thickness detection device according to claim 1, characterized in that: Inclinometers (21) are fixedly installed on both sides of the support frame (2), and handrails (22) are fixedly installed on both sides of the support frame (2); the handrails (22) are located below the inclinometers (21); a control box (23) is fixedly installed on one side of the mobile platform (1), and a storage box (24) is fixedly installed on the other side of the mobile platform (1).

10. A detection method for an asphalt paving thickness detection device, characterized in that, The process of paving asphalt mixture onto the road surface and then testing it includes the following steps: Step 1, clear the route and place the mobile platform (1) across the paved road surface; Step 2, then move to the designated position, drive the screw (18) to rotate through the motor (19), and lower the bearing plate (3) to the design height A, which is higher than the upper surface of the asphalt mixture; Step 3: The crossbar (8) is lowered by the electric push rod (7); as the crossbar (8) lowers, the calibration cylinder (6) fits against the upper surface of the asphalt mixture. Continue descending until the calibration rod (5) is inserted into the bottom of the asphalt mixture, and then observe the position of the scale line (14) where the calibration cylinder (6) is located; Alternatively, the position of the calibration ring (15) on the scale line (14) can be preset before testing, and then the positional relationship between the calibration cylinder (6) and the calibration ring (15) can be observed. Determine whether the paving thickness meets the standard and record it; this completes the inspection and judgment.

Images