Device for detecting loose paving thickness of asphalt pavement in highway engineering

By designing an asphalt pavement testing device with a sleeve and measuring mechanism, the problems of cumbersome and low-precision wire insertion method were solved, achieving efficient and accurate loose-pavement thickness measurement, and improving testing efficiency and accuracy.

CN224148504UActive Publication Date: 2026-04-21李景东
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
李景东
Filing Date
2025-05-14
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

In existing technologies, the wire insertion method for detecting the loose thickness of asphalt pavement is cumbersome and its accuracy is difficult to guarantee. Manual operation affects the measurement results, resulting in low detection efficiency and large errors.

Method used

A detection device comprising a sleeve, a measuring mechanism, and a fixing rod was designed. The loose paving thickness is measured by inserting the rod into the asphalt and using a pointer and a ruler. Combined with a spring and slider structure, the rod is ensured to be inserted vertically and the data is read automatically, simplifying the operation process and reducing human error.

Benefits of technology

It enables efficient and accurate measurement of loose asphalt pavement thickness, simplifies the operation process, improves testing efficiency and measurement accuracy, and ensures pavement quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of highway engineering, and discloses a highway engineering asphalt pavement loose laying thickness detection device, which comprises a sleeve, and a first fixing block is fixedly arranged in the outer surface of the sleeve. According to the device for detecting the loose paving thickness of the asphalt pavement in the highway engineering, the tedious process of traditional manual measurement is abandoned, so that an operator can immediately obtain asphalt thickness data by inserting an insertion rod into asphalt, the detection process is greatly simplified, the detection efficiency is greatly improved, and the progress requirement of rapid construction of the highway engineering can be fully met; due to the design of the fixing rod, a stable supporting effect is provided for the whole device, so that the device can be perpendicular to the roadbed, meanwhile, due to the design of the moving block, the inserting rod can only move up and down, measurement errors caused by inconsistent angles during manual operation are avoided, the accuracy and reliability of measurement results are effectively guaranteed, and the practicability is high. Powerful guarantee is provided for the pavement flatness, the compaction degree and the overall quality.
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Description

Technical Field

[0001] This utility model relates to the field of highway engineering technology, and more specifically, to a device for detecting the loose thickness of asphalt pavement in highway engineering. Background Technology

[0002] In highway construction, the loose paving thickness of asphalt pavement is a core parameter affecting pavement smoothness, compaction, and overall quality. Precisely controlling the loose paving thickness ensures that asphalt pavement meets design standards, extends its service life, effectively reduces later maintenance costs, and significantly improves the overall benefits of highway projects.

[0003] Currently, the industry commonly uses the wire insertion method to detect the loose asphalt pavement thickness. This method involves vertically inserting a thin, long tool, such as a wire, into the loose asphalt layer. After the wire stabilizes, it is pulled out, and the length of the inserted portion is measured using a ruler or other measuring tools to determine the loose thickness. However, this method has several drawbacks: First, the manual operation is extremely cumbersome. It requires carefully inserting the wire into the asphalt layer to ensure verticality and stability, waiting for the asphalt to cease affecting the wire's displacement, and then completely pulling the wire out. This series of complex steps must be repeated for each measurement, consuming a significant amount of time. Furthermore, the insertion depth is easily affected by the operator's force and angle, leading to deviations from the actual loose thickness and making it difficult to guarantee measurement accuracy. Therefore, there is an urgent need to develop a precise and convenient device for detecting the loose thickness of asphalt pavement in highway engineering. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a device for detecting the loose thickness of asphalt pavement in highway engineering, which has the advantages of efficient and accurate measurement of loose asphalt thickness.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting the loose thickness of asphalt pavement in highway engineering, comprising:

[0006] A sleeve, wherein a first fixing block is fixedly installed inside the outer surface of the sleeve;

[0007] A measuring mechanism, wherein the measuring mechanism is disposed inside the sleeve;

[0008] The measuring mechanism includes a moving block, the outer surface of which is slidably connected to the sleeve and the interior of the first fixed block. Handles are fixedly installed on both sides of the moving block, a rod is fixedly installed at the bottom of the moving block, a slider is fixedly installed on the outer surface of the moving block, a pointer is fixedly installed at the front end of the slider, a second fixed block is slidably connected to the outer surface of the slider, and a scale is fixedly installed on the front of the second fixed block.

[0009] As a preferred embodiment of this utility model, a circular block is fixedly fitted inside the sleeve, and the inside of the circular block is movably fitted with the outer surface of the insertion rod.

[0010] In a preferred embodiment of this invention, a spring is fixedly installed at the top of the circular block, and the top of the spring is fixedly connected to the bottom of the moving block.

[0011] As a preferred embodiment of this utility model, a base plate is movably sleeved at the bottom end of the outer surface of the sleeve, and a fixing rod is fixedly installed at the bottom end of the base plate.

[0012] As a preferred embodiment of this utility model, a round rod is fixedly installed at the top of the base plate, a screw is movably sleeved inside the top of the round rod, and a screwing block is fixedly installed at the top of the screw.

[0013] As a preferred embodiment of this utility model, the outer surface of the screw is threaded with a movable block, and the outer surface of the movable block is fixedly connected to the outer surface of the sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This device for detecting the loose thickness of asphalt pavement in highway engineering eliminates the cumbersome process of traditional manual measurement. Operators can immediately obtain asphalt thickness data simply by inserting a probe into the asphalt, significantly simplifying the testing process and greatly improving testing efficiency. It fully meets the progress requirements of rapid highway construction. Furthermore, the fixed rod design provides stable support for the entire device, ensuring it remains perpendicular to the roadbed. The moving block design allows the probe to move only up and down, avoiding measurement errors caused by inconsistent angles during manual operation. This effectively guarantees the accuracy and reliability of the measurement results, providing strong assurance for pavement smoothness, compaction, and overall quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a cross-sectional structural diagram of the sleeve of this utility model;

[0020] Figure 5 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Sleeve; 2. First fixed block; 3. Moving block; 4. Handle; 5. Insert rod; 6. Slider; 7. Pointer; 8. Second fixed block; 9. Ruler; 10. Round block; 11. Spring; 12. Base plate; 13. Fixed rod; 14. Round rod; 15. Screw; 16. Tightening block; 17. Moving block. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 5 As shown, this utility model provides a device for detecting the loose thickness of asphalt pavement in highway engineering, comprising:

[0024] Sleeve 1, with a first fixing block 2 fixedly installed inside the outer surface of sleeve 1;

[0025] The measuring mechanism is located inside the sleeve 1;

[0026] The measuring mechanism includes a moving block 3, the outer surface of which is slidably connected to the sleeve 1 and the interior of the first fixed block 2. Handles 4 are fixedly installed on both the left and right sides of the moving block 3. A plug rod 5 is fixedly installed at the bottom of the moving block 3. A slider 6 is fixedly installed on the outer surface of the moving block 3. A pointer 7 is fixedly installed at the front end of the slider 6. A second fixed block 8 is slidably connected to the outer surface of the slider 6. A scale 9 is fixedly installed on the front of the second fixed block 8.

[0027] When the operator presses down on the two handles 4, the moving block 3 will move downward along the inside of the sleeve 1 and the first fixed block 2. At this time, the insert rod 5 will move downward under the drive of the moving block 3 and be inserted into the asphalt. At the same time, the slider 6 will move downward along the inside of the second fixed block 8 under the drive of the moving block 3. At this time, the pointer 7 will move downward under the drive of the slider 6. When the bottom end of the insert rod 5 contacts the roadbed, it will be unable to continue to move downward. At this time, the data on the scale 9 pointed to by the pointer 7 is the loose asphalt thickness.

[0028] Among them, a round block 10 is fixedly sleeved inside the sleeve 1, and the inside of the round block 10 is movably sleeved with the outer surface of the insert rod 5.

[0029] The design of the circular block 10 will make the insertion rod 5 more stable when it moves up and down.

[0030] A spring 11 is fixedly installed at the top of the circular block 10, and the top of the spring 11 is fixedly connected to the bottom of the moving block 3.

[0031] When the moving block 3 moves downward, it will compress the spring 11. Due to the design of the spring 11, it will have a good restoring effect on the overall movement of the moving block 3.

[0032] Among them, the bottom end of the outer surface of the sleeve 1 is movably sleeved with the base plate 12, and the bottom end of the base plate 12 is fixedly installed with the fixing rod 13.

[0033] Because the sleeve 1 is movably connected to the outer surface of the base plate 12, the sleeve 1 can move up and down along the outer surface of the base plate 12. Due to the design of the fixing rod 13, asphalt can be easily inserted. When the bottom end of the fixing rod 13 contacts the roadbed, it will be blocked by the roadbed. At this time, the fixing rod 13 will play a good role in the overall device.

[0034] Among them, a round rod 14 is fixedly installed at the top of the base plate 12, a screw 15 is movably sleeved inside the top of the round rod 14, and a screwing block 16 is fixedly installed at the top of the screw 15.

[0035] Because the screw 15 is movably sleeved with the round rod 14, the screw 15 can rotate around the sleeve point with the round rod 14 as the axis. Due to the design of the turning block 16, the operator can rotate the screw 15 by turning the turning block 16.

[0036] Among them, the outer surface of the screw 15 is threaded with a movable block 17, and the outer surface of the movable block 17 is fixedly connected to the outer surface of the sleeve 1.

[0037] Since the movable block 17 is movably sleeved with the outer surface of the screw 15, when the screw 15 rotates, it will drive the sleeve 1 as a whole to move downward along the inside of the base plate 12 through the movable block 17.

[0038] Working principle and usage process of this utility model:

[0039] First, the operator places the entire device on the loosely laid asphalt and presses it down, causing the fixing rod 13 to insert into the asphalt. When the bottom of the fixing rod 13 contacts the roadbed, it will be blocked by the roadbed. At this point, the operator stops pressing down on the device. Next, the operator rotates the turning block 16, causing it to drive the screw 15 to rotate around the point where it engages with the round rod 14. Since the outer surface of the screw 15 is threaded into the inner thread of the movable block 17, the rotation of the screw 15 will drive the movable block 17 to move. At this time, the entire sleeve 1 will move downwards along the interior of the base plate 12 under the influence of the movable block 17. When the bottom of the sleeve 1 contacts the top of the loosely laid asphalt during this movement, the operator stops rotating the turning block 16. Then, the operator holds the two handles 4 and presses them down. At this time, the moving block 3 will move along the interior of the sleeve 1 and the first fixing block 2 under the influence of the two handles 4. Due to the internal design of the first fixed block 2, the movement of the moving block 3 is limited, allowing it to move only up and down. At this time, the moving block 3 will drive the insert rod 5 to move downward, and the spring 11 will be compressed. During this process, the bottom end of the insert rod 5 will be inserted into the asphalt. At the same time, the moving block 3 will drive the slider 6 to move downward along the inside of the second fixed block 8. At this time, the pointer 7 will move downward driven by the slider 6. When the bottom end of the insert rod 5 contacts the roadbed, it will be blocked by the roadbed and will not be able to move downward. At this time, the data on the scale 9 pointed to by the pointer 7 is the asphalt loose paving thickness data, thus realizing the function of efficient and accurate measurement of asphalt loose paving thickness. After the data measurement is completed, the operator releases the handle 4. Due to the elastic force of the spring 11, the moving block 3 will move upward under the drive of the spring 11 to reset, and then automatically pull the insert rod 5 out of the asphalt.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the loose-laid thickness of a highway engineering asphalt pavement, characterized in that, Including: Sleeve (1), wherein a first fixing block (2) is fixedly installed inside the outer surface of the sleeve (1); A measuring mechanism is disposed inside the sleeve (1); The measuring mechanism includes a moving block (3), the outer surface of which is slidably connected to the sleeve (1) and the interior of the first fixed block (2). Handles (4) are fixedly installed on both the left and right sides of the moving block (3). A plug rod (5) is fixedly installed at the bottom of the moving block (3). A slider (6) is fixedly installed on the outer surface of the moving block (3). A pointer (7) is fixedly installed at the front end of the slider (6). A second fixed block (8) is slidably connected to the outer surface of the slider (6). A scale (9) is fixedly installed on the front of the second fixed block (8).

2. The device for detecting the loose thickness of the asphalt pavement of highway engineering according to claim 1, characterized in that: A round block (10) is fixedly fitted inside the sleeve (1), and the inside of the round block (10) is movably fitted with the outer surface of the insert rod (5).

3. The device for detecting the loose thickness of the asphalt pavement of highway engineering according to claim 2, characterized in that: A spring (11) is fixedly installed at the top of the circular block (10), and the top of the spring (11) is fixedly connected to the bottom of the moving block (3).

4. The device for detecting the loose thickness of the asphalt pavement of highway engineering according to claim 1, characterized in that: A base plate (12) is movably sleeved at the bottom end of the outer surface of the sleeve (1), and a fixing rod (13) is fixedly installed at the bottom end of the base plate (12).

5. The device for detecting the loose thickness of the asphalt pavement of highway engineering according to claim 4, characterized in that: A round rod (14) is fixedly installed at the top of the base plate (12), and a screw (15) is movably sleeved inside the top of the round rod (14). A screwing block (16) is fixedly installed at the top of the screw (15).

6. The device for detecting the loose thickness of the asphalt pavement of highway engineering according to claim 5, characterized in that: The outer surface of the screw (15) is threaded with a movable block (17), and the outer surface of the movable block (17) is fixedly connected to the outer surface of the sleeve (1).