Asphalt paving comprehensive detection device
By integrating a portable device for temperature and thickness detection, the cumbersome problem of thickness and temperature detection in asphalt pavement construction has been solved, achieving efficient and accurate synchronous measurement and reducing operational complexity and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN CONSTRUCTION ENGINEERING GROUP CO LTD
- Filing Date
- 2025-10-27
- Publication Date
- 2026-06-19
AI Technical Summary
In the existing technology, the thickness and temperature detection during asphalt pavement construction is cumbersome, and the detection tools have limited functions, resulting in inconvenient operation, large data separation errors, and the probe being prone to asphalt adhesion.
A portable device integrating dual-parameter detection of asphalt temperature and thickness was designed, including a non-slip grip, temperature display screen, detection rod, cleaning head, and protective cover. It is made of ABS engineering plastic and high-temperature resistant transparent PTFE material, with built-in temperature sensor and scale detection rod, and equipped with release agent reservoir and cleaning head to achieve simultaneous measurement and anti-sticking effect.
It enables simultaneous and efficient detection of asphalt paving thickness and temperature with an accuracy of ±1mm and ±1℃, respectively. The device is lightweight and easy to operate, reducing equipment carrying capacity and lowering operational complexity and operating costs.
Smart Images

Figure CN224382552U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road construction testing technology, specifically to a comprehensive testing device for asphalt paving. Background Technology
[0002] In the construction of asphalt pavements, paving thickness and asphalt temperature are two key quality control indicators. Currently, traditional testing methods have the following shortcomings: thickness measurement typically uses a steel rod insertion method, but the surface of the rod easily sticks to asphalt, leading to blurred graduations and directly affecting the accuracy of subsequent measurements. Repeated cleaning and application of a release agent are required during use. Temperature measurement often uses infrared thermometers, which cannot directly obtain the true internal temperature of the asphalt, and requires additional equipment, making operation cumbersome. Testing tools have limited functionality, requiring multiple rounds of measurement, resulting in low efficiency, especially in high-frequency testing scenarios. Existing equipment is cumbersome to operate, inefficient, and the separate measurement method leads to data matching errors at the same point.
[0003] Existing technologies include some improved devices, such as the "Asphalt Pavement Thickness and Temperature Detection Device" disclosed in Chinese Patent Publication No. CN220977615U. However, these devices do not solve the problems of applying release agent and cleaning asphalt stuck to the detection rod, and the finished product is large and inconvenient to carry. Therefore, there is an urgent need for a comprehensive device that can conveniently and simultaneously detect the thickness and temperature of asphalt during paving, while also being non-stick and easy to clean. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide an integrated portable device that integrates asphalt temperature and thickness dual parameter detection and has a built-in anti-sticking function, thereby solving the problems of cumbersome operation, data separation and probe adhesion in the prior art.
[0005] The technical solution adopted by this utility model to solve its technical problem is: an asphalt paving comprehensive testing device, including an anti-slip grip, a temperature display screen, an operation button, a testing rod, a cleaning head, and a protective sleeve; the temperature display screen and the operation button constitute a temperature detection module, which is fixedly installed on the anti-slip grip; the testing rod is fixedly installed at the bottom of the anti-slip grip; a temperature sensor is axially provided inside the lower end of the testing rod; the temperature sensor is connected to the temperature display screen on the anti-slip grip at the top of the testing rod via a circuit; the protective sleeve contains a release agent, and its upper end is connected to the cleaning head; the testing rod passes through the cleaning head and is fitted inside the protective sleeve.
[0006] Furthermore, the anti-slip grip is made of ABS engineering plastic and is 100mm in length.
[0007] Furthermore, the detection rod has a diameter of 4mm and a length of 500mm, and has an internal hole for installing a connecting wire. The lower end of the detection rod is a tapered needle, and the scale is marked starting from the tapered needle, starting from 0, with scale lines marked every 1mm. Its surface is engraved with a length scale of 0-200mm, with an accuracy of 1mm.
[0008] Furthermore, the temperature sensor has a temperature measurement accuracy of ±0.1℃ and a temperature measurement range of -30℃ to +300℃.
[0009] Furthermore, the probe of the temperature sensor is flush with the end face of the conical needle to detect the asphalt temperature in real time.
[0010] Furthermore, the cleaning head is made of a hard, wear-resistant material, with an upper inner diameter of 4mm and a lower inner diameter of 8mm, and is used to scrape off the asphalt aggregate attached to the detection rod when it is inserted to achieve a cleaning effect.
[0011] Furthermore, the protective sleeve is made of high-temperature resistant transparent PTFE material, with an inner diameter of 8mm and a length of 560mm. Its inner cavity depth is ≥ 1.1 times the length of the detection rod, ensuring that the release agent can completely immerse the detection rod. The empty lower part can be used as a liquid storage chamber to store additional release agent. After the release agent is injected into the protective sleeve, it can evenly wet the surface of the detection rod and prevent asphalt from sticking.
[0012] The working principle of this utility model is as follows:
[0013] Preparation before testing: Inject an appropriate amount of release agent into the upper part of the protective sleeve. The release agent flows down the inner wall and wets the probe tip and scale surface.
[0014] Thickness and temperature measurement: Hold the non-slip handle and insert the test rod vertically into the asphalt paving layer until the needle touches the underlying layer; read the scale value of the test rod on the asphalt surface and record the paving thickness; at the same time, the temperature sensor detects the asphalt temperature in real time, and the data is displayed on the temperature display screen. When repeating the measurement, insert the protective sleeve again in the middle to keep the head of the test rod wetted by the release agent.
[0015] Cleaning and maintenance: After measurement, pull out the test rod. The cleaning head on the upper part of the protective sleeve can scrape off the surface asphalt to achieve a cleaning effect.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] Multifunctional integration: Simultaneously achieves thickness measurement and temperature detection, reducing the number of devices to carry, with measurement accuracy of ±1mm and temperature accuracy of ±1℃, improving detection efficiency.
[0018] Anti-stick design: The liquid reservoir at the bottom of the protective sleeve continuously wets the test rod, and it is equipped with a cleaning head to remove asphalt, preventing asphalt from sticking to the test rod and making it easier to read the value.
[0019] Easy to operate: The device is lightweight, with an ergonomic, non-slip grip that can be operated with one hand; the temperature is displayed in real time, eliminating the need for additional reading devices.
[0020] Easy to maintain: The release agent injected once can be reused, and the protective cover is easy to clean, reducing the cost of continuous use.
[0021] Highly adaptable: Suitable for various asphalt paving scenarios. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0023] Figure 2 for Figure 1 A schematic diagram of the embodiment shown, in which the detection rod is not fitted with the protective sleeve;
[0024] Explanation of the reference numerals in the figure:
[0025] 1. Non-slip grip; 2. Temperature display screen; 3. Operation button; 4. Detection rod; 5. Cleaning head; 6. Protective cover. Detailed Implementation
[0026] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0027] Reference Figure 1 and Figure 2 This embodiment provides an asphalt paving comprehensive testing device, including an anti-slip grip 1, a temperature display screen 2, an operation button 3, a testing rod 4, a cleaning head 5, and a protective sleeve 6. The temperature display screen 2 and the operation button 3 constitute a temperature detection module, which is fixedly installed on the anti-slip grip 1. The testing rod 4 is fixedly installed at the bottom of the anti-slip grip 1, and a temperature sensor is axially provided inside the lower end of the testing rod 4. The temperature sensor is connected to the temperature display screen 2 on the anti-slip grip at the top of the testing rod through a circuit. The protective sleeve 6 contains a release agent, and its upper end is connected to the cleaning head 5. The testing rod 4 passes through the cleaning head 5 and is fitted inside the protective sleeve 6.
[0028] In this embodiment, the anti-slip grip 1 is made of ABS engineering plastic and is 100mm in length.
[0029] In this embodiment, the temperature detection module is a prior art technology and is embedded in the anti-slip grip 1. The operation button 3 can control the temperature display screen 2 to turn on and off, lock data, switch between Celsius and Fahrenheit, and read the peak value of a single temperature measurement.
[0030] In this embodiment, the detection rod 4 is made of high-strength steel with a diameter of 4mm and a length of 500mm. It has holes inside for installing connecting wires. The lower end of the detection rod 4 is a tapered needle. The scale is marked starting from the tapered needle, starting from 0, with scale lines marked every 1mm. Its surface is engraved with a length scale of 0-200mm, with an accuracy of 1mm.
[0031] In this embodiment, the temperature sensor has a temperature measurement accuracy of ±0.1℃ and a temperature measurement range of -30℃ to +300℃.
[0032] In this embodiment, the probe of the temperature sensor is flush with the end face of the conical needle to detect the asphalt temperature in real time.
[0033] In this embodiment, the cleaning head 5 is made of a hard, wear-resistant material (such as an iron sheet), with an upper inner diameter of 4mm and a lower inner diameter of 8mm. It is used to scrape off the asphalt aggregate adhering to the detection rod when it is inserted, achieving a cleaning effect. The cleaning head 5 can be connected to the protective sleeve 6 using glue or tape.
[0034] In this embodiment, the protective sleeve 6 is made of high-temperature resistant transparent PTFE material, with an inner diameter of 8mm and a length of 560mm. Its inner cavity depth is ≥ 1.1 times the length of the detection rod, ensuring that the release agent can completely immerse the detection rod. The empty lower part can be used as a liquid storage cavity to store additional release agent. After the release agent is injected into the protective sleeve, it can evenly wet the surface of the detection rod and prevent asphalt from sticking.
[0035] In this embodiment, the separating agent may be paraffin emulsion, lubricating oil, etc.
[0036] Specific implementation process:
[0037] 1) Before assembling, debugging and using the device, check whether all components are complete and undamaged;
[0038] 2) Before testing, inject the release agent into the protective sleeve 6 to ensure that it sufficiently wets the insertion section of the test rod, so that the scale area at the bottom of the test rod is wetted by the release agent;
[0039] 3) Holding the non-slip handle 1, insert the test rod 4 vertically into the asphalt paving layer until the needle touches the bottom;
[0040] 4) Read the scale value of the detection rod 4 on the asphalt surface and record the paving thickness;
[0041] 5) At the same time, the temperature display screen 2 displays the asphalt temperature in real time (e.g., 85℃);
[0042] 6) After the measurement is completed, pull out the test rod 4 and put it back into the protective sleeve 6. When putting it back, rub the part of the test rod 4 that is contaminated with asphalt aggregate with the cleaning head 5 to scrape off the surface asphalt and achieve a cleaning effect.
[0043] 7) If long-term storage is required, pour out the remaining release agent in the protective sleeve 6 and clean it thoroughly.
[0044] Through the above implementation method, the device can efficiently complete the simultaneous detection of asphalt paving thickness and temperature, meeting the requirements of road construction quality control.
[0045] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these are within the scope of protection of the present invention.
Claims
1. A comprehensive testing device for asphalt paving, characterized in that: The device includes a non-slip grip, a temperature display screen, an operation button, a detection rod, a cleaning head, and a protective cover. The temperature display screen and operation button constitute a temperature detection module, which is fixedly installed on the non-slip grip. The detection rod is fixedly installed at the bottom of the non-slip grip, and a temperature sensor is axially installed inside the lower end of the detection rod. The temperature sensor is connected to the temperature display screen on the top of the non-slip grip via a circuit. The protective cover contains a release agent and is connected to the cleaning head at its upper end. The detection rod passes through the cleaning head and is fitted inside the protective cover.
2. The asphalt paving comprehensive testing device according to claim 1, characterized in that: The non-slip grip is made of ABS engineering plastic and is 100mm in length.
3. The asphalt paving comprehensive testing device according to claim 1 or 2, characterized in that: The detection rod has a diameter of 4mm and a length of 500mm. It has an internal hole for installing a connecting wire. The lower end of the detection rod is a tapered needle. The scale is marked starting from the tapered needle, starting from 0, with a scale line marked every 1mm. Its surface is engraved with a length scale of 0-200mm, with an accuracy of 1mm.
4. The asphalt paving comprehensive testing device according to claim 3, characterized in that: The temperature sensor has a temperature measurement accuracy of ±0.1℃ and a temperature measurement range of -30℃ to +300℃.
5. The asphalt paving comprehensive testing device according to claim 4, characterized in that: The probe of the temperature sensor is flush with the end face of the conical needle, and it detects the temperature of the asphalt in real time.
6. The asphalt paving comprehensive testing device according to claim 5, characterized in that: The cleaning head is made of a hard, wear-resistant material, with an upper inner diameter of 4mm and a lower inner diameter of 8mm.
7. The asphalt paving comprehensive testing device according to claim 6, characterized in that: The protective sleeve is made of high-temperature resistant transparent PTFE material, with an inner diameter of 8mm and a length of 560mm. Its inner cavity depth is ≥ 1.1 times the length of the detection rod, ensuring that the release agent can completely immerse the detection rod. The empty lower part can be used as a liquid storage chamber to store additional release agent.