Intelligent asphalt mixture construction system suitable for low-temperature environment in winter

Abstract

The utility model discloses an intelligent asphalt mixture construction system suitable for a low-temperature environment in winter, belongs to the technical field of road construction, and aims to solve the technical problem that the low-temperature construction quality of an asphalt pavement is difficult to control in the prior art. The system comprises: an intelligent detection module, which is used for collecting a plurality of key parameters in the asphalt mixture and the construction process; the intelligent control module is used for classifying the plurality of key parameters obtained by the intelligent detection module, analyzing and calculating each group of classified key parameters, and judging whether to output a regulation and control signal or not according to a data analysis result; and the operation end is used for receiving the regulation and control signal from the intelligent control module. The intelligent asphalt mixture construction system suitable for the low-temperature environment in winter can be better used for asphalt laying work in various low-temperature environments, and is wide in application range, high in working efficiency and good in laying quality.

Description

Technical Field

[0001] The utility model relates to the technical field of road construction, in particular to an intelligent asphalt mixture construction system suitable for low-temperature environments in winter. Background Art

[0002] In severely cold regions, the harsh climate has brought many adverse effects on the performance of road engineering pavements. Not only is it very easy to cause early diseases such as low-temperature shrinkage and transverse cracks on asphalt pavements, it also increases the risk of rutting under high temperature conditions, and brings huge challenges to road construction. The uniformity of asphalt mixture is a prerequisite for ensuring the excellent road performance and long-term service life of asphalt pavements. However, when constructing in a low-temperature environment, it is often more difficult to ensure the uniformity and density of asphalt mixture paving due to the low temperature characteristics of the construction environment, which in turn exacerbates the impact on the road performance of asphalt roads.

[0003] In cold environments, real-time feedback and ensuring the uniformity, thickness, compaction and other information of the asphalt mixture during paving, so as to offset the impact of the low temperature environment as much as possible, is the key to ensuring the stability of the road structure and mechanical properties such as low-temperature crack resistance and high-temperature rutting resistance, and thus the key to ensuring the road performance and driving safety.

[0004] At present, the commonly used detection methods are mainly based on sampling detection after the completion of asphalt pavement construction. The method is time-consuming and has a large subjective randomness. The non-destructive detection method has a high detection cost, and it is often impossible to evaluate and feedback the information such as the paving uniformity of the asphalt mixture in real time during the asphalt pavement construction process, and it is also impossible to further complete the real-time adjustment and correction of the construction process. Domestic and foreign scholars have carried out a lot of research on the problem of asphalt mixture uniformity through digital imaging technology, but the current research results are mainly focused on the uniformity evaluation of asphalt mixture specimens, and the influence of asphalt mixture uniformity on performance is studied through the image method. There are few related studies on the real-time and rapid evaluation technology of paving uniformity during asphalt mixture construction. At the same time, judging the construction effect with a single indicator such as uniformity is often not objective. In addition, the speed and temperature of the traditional paving and rolling machine are controlled by the staff, which can neither adjust and respond quickly in real time nor is full of uncertainty.

[0005] Therefore, there is an urgent need for an intelligent asphalt mixture construction system that can solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide an intelligent asphalt mixture construction system suitable for low-temperature winter environments, so as to solve the technical problem in the prior art that the construction quality of asphalt pavement under low-temperature construction is difficult to control.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides an asphalt mixture intelligent construction system suitable for low temperature environment in winter, comprising:

[0009] An intelligent detection module, which is used to collect multiple key parameters of the asphalt mixture and the construction process, wherein the multiple key parameters include asphalt mixture temperature, ambient temperature, asphalt paving speed, asphalt paving thickness, uniformity and compaction;

[0010] An intelligent control module, which is used to classify the multiple key parameters obtained by the intelligent detection module, analyze and calculate each group of classified key parameters, and determine whether to output a control signal according to the data analysis results;

[0011] An operation end, the operation end is used to receive the control signal from the intelligent control module; the operation end includes a mixing and transport operation end, an asphalt paving operation end and an asphalt rolling operation end;

[0012] The intelligent detection module, the intelligent control module and the operation end are communicatively connected.

[0013] The key parameters obtained by the intelligent detection module are analyzed through the intelligent control module. The specific method is to compare the above key parameters with the preset ideal values ​​and set the numerical floating range. If the actual value exceeds the numerical floating range of the ideal value, the intelligent control module outputs a control signal to the operation end. After receiving the control signal, the operation end increases / decreases the asphalt mixture temperature, increases / decreases the asphalt paving speed, increases / decreases the asphalt paving thickness, or stops and waits.

[0014] Optionally or preferably, the intelligent detection module includes a temperature measuring device, an ambient temperature detecting device, a speed measuring device and an asphalt pavement compaction effect detecting device;

[0015] The temperature measuring device is arranged at the discharge port of the asphalt mixing plant, the top of the transport vehicle, the bottom of the asphalt paver or the bottom of the road roller;

[0016] The speed measuring device is arranged on an asphalt paver or a road roller, and is used to detect the paving or rolling speed of the paver or the road roller respectively.

[0017] Optionally or preferably, the intelligent detection module also includes a roller compaction data acquisition module.

[0018] Optionally or preferably, the temperature measuring device and the ambient temperature detecting device are infrared thermal imagers; the speed measuring device and the asphalt pavement compaction effect detecting device are geological radars.

[0019] Optionally or preferably, the roller compaction data acquisition module includes an infrared thermal imager and a geological radar.

[0020] Based on the above technical solution, the utility model can at least produce the following technical effects:

[0021] The utility model provides an intelligent asphalt mixture construction system suitable for low-temperature winter environments. Through intelligent detection modules and intelligent control modules, the system calculates and analyzes the transportation, paving and rolling links of asphalt pavement construction at different operating ends and under different environmental conditions, and acts on the operating end to control the real-time paving rate, asphalt mixture temperature and asphalt paving thickness within the set range, thereby achieving mixing monitoring, real-time control, intelligent detection and intelligent paving, which are specifically manifested in increasing the factory temperature of the mixture, doing a good job of heat preservation in storage and transportation, improving rolling efficiency, increasing thick layer paving, reducing the temperature decay rate during the paving process of the mixture, reducing the lower limit of the temperature allowed for the rolling of the mixture, and reasonably matching construction machinery, etc. These have important breakthrough effects and practical significance in solving the difficulties in asphalt pavement construction in low-temperature environments and ensuring the construction quality of asphalt pavements and other practical engineering problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a system flow chart of the utility model applicable to the asphalt mixture intelligent construction system in a low temperature environment in winter;

[0023] Figure 2 It is a schematic diagram of the layout of the intelligent construction system in the first embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of the layout of the intelligent construction system in the second embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of the layout of the intelligent construction system in Example 3 of the present utility model.

[0026] In the figure: 1. Temperature measuring device; 2. Asphalt mixture discharging end; 3. Transport vehicle; 4. Display; 5. Speed ​​measuring device; 6. Asphalt pavement compaction effect detection device; 7. Computer. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work belong to the scope of protection of the utility model.

[0028] Embodiment 1

[0029] See also Figure 1In this embodiment, an intelligent asphalt mixture construction system suitable for low temperature environments in winter includes an intelligent detection module, an intelligent control module and an operating end; wherein the intelligent detection module is used to collect multiple key parameters of the asphalt mixture and the construction process; the intelligent control module is used to classify the multiple key parameters obtained by the intelligent detection module, and analyze and calculate each group of key parameters after classification, and determine whether to output a control signal to the operating end according to the data analysis results; the operating end is used to receive the control signal from the intelligent control module. In this embodiment, the operating end is a mixing and transportation operating end; the intelligent detection module, the intelligent control module and the operating end are connected via Bluetooth.

[0030] See also Figure 2 In this embodiment, the intelligent detection module includes a temperature measuring device 1 and an ambient temperature detection device; specifically, the temperature measuring device 1 is a plurality of UTi320E infrared thermal imagers, and the plurality of infrared thermal imagers are respectively arranged at the asphalt mixture discharge end 2 and the upper end of the loading part of the transport vehicle 3, and are respectively used for real-time monitoring of the temperature of the asphalt mixture during mixing and transportation.

[0031] In this embodiment, the environment temperature detection device is a UT i 320E infrared thermal imager (not shown in the figure), which is used to detect the actual temperature of the environment during asphalt mixing and transportation.

[0032] In actual work, a display 4 is provided inside the transport vehicle 3, and personnel can read the real-time temperature data detected by multiple infrared thermal imagers and ambient temperature detection devices through the display. The multiple infrared thermal imagers and ambient temperature detection devices feed back the mixture temperature parameters and ambient temperature parameters to the intelligent control system. If the real-time temperature data exceeds the numerical floating range of the preset ideal value, the intelligent control system sends a control signal to the operating end (i.e., the asphalt mixing plant and the loading part of the transport vehicle) to change the temperature of the asphalt mixture.

[0033] In this embodiment, the main body of the intelligent control system is a computer 7 with built-in software for analyzing data, storing data, simulating calculations and controlling construction equipment. The above software can be used to verify the differences between the measured data and the set ideal values.

[0034] Embodiment 2

[0035] Based on the first embodiment, the present embodiment applies the intelligent detection module and the intelligent control module to the asphalt paving operation end. That is, in the present embodiment, the operation end is the asphalt paving operation end.

[0036] See also Figure 3In this embodiment, the intelligent detection module includes a speed measuring device 5, a temperature measuring device 1 and an asphalt pavement compaction effect detection device 6; wherein the speed measuring device 5 is arranged on a paver used for paving asphalt pavement, and is used to detect the actual travel speed of the paver, and can specifically be a geological radar, model SIR-4000.

[0037] The temperature measuring device 1 and the ambient temperature detection device are arranged at the lower part of the above-mentioned paver, and are used to detect the actual temperature of the asphalt mixture and the actual temperature of the construction environment. In this embodiment, the temperature measuring device 1 and the ambient temperature detection device are both infrared thermal imagers (the ambient temperature detection device is not shown in the figure), model UT i 320E.

[0038] The asphalt pavement compaction effect detection device 6 is used to detect the paving thickness, paving uniformity and paving compaction of the asphalt mixture during the paving process of the paver. In this embodiment, the asphalt pavement compaction effect detection device 6 is a geological radar, model SIR-4000.

[0039] In this embodiment, the intelligent detection module is installed at the rear of the paver and consists of 8 adjustable infrared thermal imagers and 3 geological radars, which are arranged in a row and have a width that can cover the entire road surface. It also includes corresponding connecting devices, brackets, signal lines, computer control screens, etc., which can read the temperature data of the entire paving section and the temperature data of the asphalt mixture in the paving hopper in real time.

[0040] In actual work, the number of infrared thermal imagers and geological radars can be adaptively adjusted according to the actual road width.

[0041] At the same time, the high-precision positioning module installed inside the paver can collect the high-precision position of the paver in real time and calculate the paver's driving speed. The temperature information of the paved asphalt pavement can also be displayed to the construction personnel in real time through the LED display screen of the intelligent monitoring system, so that the construction personnel can control whether the temperature meets the paving requirements, and transmit the information to the back-end data center in real time for storage and release.

[0042] When the operation end provided in this embodiment is an asphalt paving operation, the asphalt mixture intelligent construction system can at least achieve the following technical effects:

[0043] First, to detect the paving temperature, speed, thickness and operation mileage of asphalt mixture;

[0044] Second, the paving operation status can be queried in real time through the network, including the mixture temperature before paving and the road surface temperature after paving, as well as the running speed, trajectory, specific location and other information of the paver;

[0045] Third, the paving history data can be queried through the Internet at any time and maintained for a long time;

[0046] Fourth, a paving report, i.e. a paving temperature range distribution chart, can be generated based on the various data collected to show the paving temperature range distribution of the paver;

[0047] Fifth, provide remote monitoring video to verify the collected real-time paving data;

[0048] Sixth, analyze the paving speed and obtain a speed range distribution analysis report. At the same time, the trajectory of each paver can be traced back and displayed on the map.

[0049] Embodiment 3

[0050] Based on the first embodiment, the present embodiment applies the intelligent detection module and the intelligent control module to the asphalt rolling operation end. That is, in the present embodiment, the operation end is an asphalt rolling operation end.

[0051] See also Figure 4 In this embodiment, the intelligent detection module includes a speed measuring device 5, a temperature measuring device 1, an ambient temperature detection device (not shown in the figure) and a roller compaction data acquisition module; wherein the speed measuring device 5 is arranged on a roller used for compacting asphalt pavement, and is used to detect the actual travel speed of the roller, and can specifically be a geological radar, model SIR-4000.

[0052] The temperature measuring device 1 and the ambient temperature detection device are arranged at the lower part of the above-mentioned roller, and are used to detect the actual temperature of the asphalt paved road surface and the actual temperature of the construction environment. In this embodiment, the temperature measuring device 1 and the ambient temperature detection device are both infrared thermal imagers (the ambient temperature detection device is not shown in the figure), and the model is UT i 320E.

[0053] In this embodiment, the roller compaction data acquisition module includes an infrared thermal imager and a geological radar. Through a specific algorithm, the collected data is subjected to a directional analysis, thereby obtaining real and complete roller compaction data information in real time.

[0054] In addition, accurate roller operation data can be obtained under the guidance of the triangulation principle, which is convenient for construction personnel to accurately grasp its operation speed and construction process. The rolling data can be transmitted to the intelligent control module through the communication module to transmit basic data and application data, which is convenient for management personnel to integrate the roller operation data and parameters. At the same time, construction workers can view the number of times the road surface is rolled and the weak rolling areas through the built-in display 4 in the cockpit to choose whether to strengthen the rolling.

[0055] When the operation end provided in this embodiment is an asphalt rolling operation end, the asphalt mixture intelligent construction system can at least achieve the following technical effects:

[0056] First, the system can monitor the rolling temperature, speed, number of passes and process of asphalt mixture, and provide timely feedback on compaction control;

[0057] Second, the system can display the rolling temperature and rolling pass interval distribution through the cockpit tablet computer and display them in the form of charts;

[0058] Third, the system can analyze the rolling speed and obtain a speed range distribution analysis report. At the same time, the trajectory of each roller can be traced back on the map;

[0059] Fourth, the system can provide remote monitoring video to verify the collected real-time rolling data.

[0060] The embodiment provided by the utility model detects the road surface temperature, thickness, uniformity, compaction and other data in real time through the intelligent detection module, and can provide more timely feedback on the paving and rolling results compared with the ordinary construction process, avoiding paving errors in the construction process due to insufficient timeliness, thereby avoiding early diseases of the road after it is put into use as much as possible;

[0061] The intelligent control system controls the travel speed of the paving and rolling machinery and the temperature of the asphalt mixture. It is more intelligent than ordinary paving machines. It can not only detect the road paving effect in real time, but also correct it in time. While improving the road construction effect, it can also reduce the pressure on workers.

[0062] In the embodiment provided by the utility model, the main body of the intelligent detection module is an infrared detection instrument, which is simple to manufacture. Infrared instruments are widely used in road engineering and have in-depth experimental research, which reduces the production cost of the present invention and provides a solid theoretical basis.

[0063] In the embodiment provided by the utility model, the main body of the intelligent control module is self-developed software with a high level of intelligence, which can not only promote the progress of road construction technology, but also provide a reference for similar experimental research in road engineering.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent asphalt mixture construction system suitable for low temperature environments in winter, characterized in that: include: An intelligent detection module, which is used to collect multiple key parameters of the asphalt mixture and the construction process, wherein the multiple key parameters include asphalt mixture temperature, ambient temperature, asphalt paving speed, asphalt paving thickness, uniformity and compaction; An intelligent control module, which is used to classify the multiple key parameters obtained by the intelligent detection module, analyze and calculate each group of classified key parameters, and determine whether to output a control signal according to the data analysis results; An operation end, the operation end is used to receive the control signal from the intelligent control module; the operation end includes a mixing and transport operation end, an asphalt paving operation end and an asphalt rolling operation end; The intelligent detection module, the intelligent control module and the operation end are communicatively connected.

2. The asphalt mixture intelligent construction system suitable for low temperature environment in winter according to claim 1 is characterized in that: The intelligent detection module includes a temperature measuring device, an ambient temperature detecting device, a speed measuring device and an asphalt pavement compaction effect detecting device; The temperature measuring device is arranged at the discharge port of the asphalt mixing plant, the top of the transport vehicle, the bottom of the asphalt paver or the bottom of the road roller; The speed measuring device is arranged on an asphalt paver or a road roller, and is used to detect the paving or rolling speed of the paver or the road roller respectively.

3. The asphalt mixture intelligent construction system suitable for low temperature environment in winter according to claim 1 is characterized in that: The intelligent detection module also includes a roller compaction data acquisition module.

4. The asphalt mixture intelligent construction system suitable for low temperature environment in winter according to claim 2 is characterized in that: The temperature measuring device and the ambient temperature detecting device are infrared thermal imagers; the speed measuring device and the asphalt pavement compaction effect detecting device are geological radars.

5. The asphalt mixture intelligent construction system suitable for low temperature environment in winter according to claim 3 is characterized in that: The roller compaction data acquisition module includes an infrared thermal imager and a geological radar.

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