A tunnel closed intelligent concrete maintenance trolley

Abstract

The present invention relates to the field of tunnel maintenance technology, and in particular to a closed intelligent concrete maintenance trolley for tunnels, comprising: a maintenance component, a heating component, an intelligent temperature-controlled water tank, a central control panel and a central control panel, wherein the intelligent temperature-controlled water tank adjusts the spray water temperature in the water tank by the concrete surface temperature; the maintenance trolley working mode is determined by the initial water droplet evaporation time and the preset first water droplet evaporation time; the central control panel determines whether to adjust the nozzle atomization opening or the spray water temperature according to the first concrete surface temperature and the preset concrete surface fluctuation temperature interval; determines whether to adjust the nozzle spray pressure or turn on the heating device according to the second concrete surface temperature and the preset concrete surface fluctuation temperature interval; determines whether to adjust the adjacent nozzle position or the nozzle spraying mode according to the third concrete surface temperature and the preset concrete surface fluctuation temperature interval. The present invention accurately controls the concrete surface temperature by adjusting the above-mentioned nozzle spraying parameters.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel maintenance, and in particular to a closed intelligent concrete maintenance trolley for a tunnel. Background Art

[0002] With the continuous development of water conservancy and hydropower projects in western regions, Qinghai-Tibet Plateau and other high mountainous plateau areas, the proportion of underground caverns such as tunnels is increasing, and the requirements for tunnel construction quality are also increasing. In the pouring of the second lining of the tunnel, the strength of the concrete directly determines the safety and life of the tunnel. As the preparatory force-bearing structure of the tunnel, the second lining plays a great role in the durability of use. In order to meet the use function of the tunnel, the second lining concrete structure of the tunnel has become more and more important. When the tunnel is built, reinforced concrete and other materials are usually used to build a permanent support structure. Especially for pumped concrete with a high cement content, if it is not maintained in time, it is easy to crack the wall. In order to prevent the concrete from cracking during the solidification process, it needs to be watered and maintained in time. A hydropower station in Tibet is a national key project. The total length of the two diversion tunnels is 7.4 km, and the cross-sectional area is nearly 300 square meters. It is an ultra-long and large-section diversion tunnel. In underground cavern construction projects such as this tunnel, the problem of concrete maintenance is particularly prominent.

[0003] Chinese Patent Publication No.: CN113931658A discloses a maintenance trolley including a water tank, a water pipe and a nozzle. A support platform is provided on the gantry, the water tank is placed on the support platform, the water tank is connected to the water pipe, and the nozzle is connected to the water pipe to spray water mist onto the tunnel wall; a water baffle is fixed to the gantry by a fixing device, the water pipe is installed on the water baffle, a sliding component is provided on the water baffle, a limit component is installed on the sliding component, the sliding component is adjusted to adapt to the change of the installation position of the water pipe, so that the limit component can limit the water pipe; a recovery structure includes a recovery box and a purification structure; the purification structure is arranged in the recovery box to purify the recovered water.

[0004] It can be seen that the prior art has the following problems: the concrete surface cannot be accurately controlled, resulting in cracks on the concrete surface. Summary of the invention

[0005] To this end, the present invention provides a tunnel closed intelligent concrete curing trolley to overcome the problem in the prior art that the concrete surface temperature cannot be accurately controlled, resulting in cracks on the concrete surface.

[0006] To achieve the above-mentioned purpose, the present invention provides a tunnel closed intelligent concrete curing trolley, comprising:

[0007] A moving assembly, which is arranged at the bottom of the maintenance trolley and consists of a number of steering wheels and a support frame, and is used for moving the maintenance trolley;

[0008] A gantry assembly, which is connected to the moving assembly and is composed of a plurality of cross beams, columns and longitudinal beams, wherein each cross beam is connected to the longitudinal beam and the diagonal tie rod;

[0009] A maintenance component, which is connected to the gantry assembly and is used for spraying concrete, and includes a plurality of movable spray heads, a curved support frame, a locking mechanism and a sliding member;

[0010] A nozzle connected to a locking mechanism that can slide on the curved support frame, wherein the sliding range of the locking mechanism is controlled according to a blocking ring, wherein the blocking ring is a component disposed between the sliding components to prevent the sliding components from falling, wherein the nozzle can adjust the nozzle spraying position, nozzle spraying pressure, nozzle spraying mode and nozzle atomization opening;

[0011] A heating component connected to the portal assembly and used to adjust the ambient temperature in the tunnel;

[0012] An infrared temperature sensor is arranged on the nozzle and is used to detect the ambient humidity and concrete temperature in the tunnel;

[0013] An intelligent temperature-controlled water tank, which is arranged above the crossbeam and is used to adjust the temperature of the spray water;

[0014] An image acquisition device, connected to the nozzle, for acquiring water drop image data of the concrete spraying area;

[0015] A central control panel is arranged above the crossbeam and can automatically control the travel direction, travel speed and working mode of the maintenance trolley, wherein the intelligent temperature-controlled water tank adjusts the spray water temperature in the water tank according to the concrete surface temperature; the working mode of the maintenance trolley is determined by the initial water droplet evaporation time and the preset first water droplet evaporation time; the central control panel determines whether to adjust the nozzle atomization opening or the spray water temperature according to the first concrete surface temperature and the preset concrete surface fluctuation temperature range; determines whether to adjust the nozzle spray pressure or turn on the heating device according to the second concrete surface temperature and the preset concrete surface fluctuation temperature range; determines whether to adjust the adjacent nozzle position or the nozzle spray mode according to the third concrete surface temperature and the preset concrete surface fluctuation temperature range.

[0016] Furthermore, the infrared temperature sensor collects concrete temperature data to obtain the concrete surface temperature, and the intelligent temperature-controlled water tank adjusts the spray water temperature in the intelligent temperature-controlled water tank according to the difference between the concrete surface temperature and the concrete standard temperature to obtain the target spray water temperature.

[0017] Furthermore, the image acquisition device acquires water droplet distribution data of the concrete area after the initial spraying of the nozzle to obtain a water droplet distribution image, and the central control console analyzes the water droplet distribution image to obtain the initial water droplet evaporation time;

[0018] The initial water drop evaporation time is obtained according to a preset ratio of the water drop evaporation area to the spraying area of ​​the concrete area.

[0019] Furthermore, the central console determines a maintenance trolley working mode according to the initial water droplet evaporation time and a preset first water droplet evaporation time, wherein the maintenance trolley working mode includes a continuous maintenance working mode and an interval maintenance working mode.

[0020] Furthermore, the continuous maintenance working mode is the working mode selected by the maintenance trolley when the initial water droplet evaporation time is less than the first water droplet evaporation time; the interval maintenance working mode is the working mode selected by the maintenance trolley when the initial water droplet evaporation time is greater than the first water droplet evaporation time.

[0021] Furthermore, the infrared temperature sensor continuously detects the concrete surface temperature in the continuous maintenance working mode to obtain a first concrete surface temperature. The central console compares the first concrete surface temperature with a preset concrete surface fluctuation temperature range to obtain a first temperature comparison result, and determines whether to adjust the nozzle atomization opening or the spray water temperature according to the first temperature comparison result.

[0022] Furthermore, the infrared temperature sensor collects the concrete surface temperature of the spraying area after adjusting the atomization opening of the nozzle to obtain a second concrete surface temperature. The central console compares the second concrete surface temperature with a preset concrete surface fluctuation temperature range to obtain a second temperature comparison result, and determines whether to adjust the nozzle spraying pressure or turn on the heating device based on the second temperature comparison result.

[0023] Further, the infrared temperature sensor collects the concrete surface temperature of the spraying area after adjusting the spraying pressure of the nozzle to obtain a third concrete surface temperature, and the central console compares the third concrete surface temperature with a preset concrete surface fluctuation temperature range to obtain a third temperature comparison result, and determines whether to adjust the position of the adjacent nozzle or the spraying mode of the nozzle according to the third temperature comparison result;

[0024] Wherein, the spraying position of the nozzle can be changed according to the rotation of the nozzle; the spraying mode of the nozzle includes a fixed spraying mode and a rotating spraying mode.

[0025] Furthermore, when the maintenance trolley selects the interval maintenance working mode, the image acquisition device acquires the image of the concrete spraying area to obtain the interval spraying area image, the central control console analyzes the interval spraying area image to obtain the water droplet adhesion area of ​​the spraying area, and records the time for the water droplet adhesion area of ​​the spraying area to evaporate to the standard water droplet adhesion area to obtain the actual water droplet adhesion time.

[0026] Furthermore, the spraying cycle of the interval maintenance working mode is adjusted according to the actual water droplet attachment time and the expected water droplet attachment time to obtain a target spraying cycle.

[0027] Compared with the prior art, the beneficial effect of the present invention is that the central console can automatically control the travel direction, speed and working mode of the maintenance trolley, reducing manual operation and improving work efficiency. Through the infrared temperature sensor and image acquisition device, the temperature and moisture condition of the concrete can be monitored in real time to ensure that the maintenance conditions meet the requirements. The design of the mobile component and the maintenance component enables the maintenance trolley to adapt to tunnels of different shapes and sizes, and the adjustability of the nozzle ensures the uniformity of the spraying. The intelligent temperature-controlled water tank can adjust the spray water temperature according to the surface temperature of the concrete to reduce energy consumption, and at the same time save water resources by adjusting the spray pressure and atomization opening of the nozzle. The heating component can adjust the ambient temperature in the tunnel to ensure effective concrete maintenance under low temperature conditions. The design of the blocking ring prevents the sliding component from accidentally falling and improves the safety of the operation of the maintenance trolley. By accurately controlling the spray cycle and the attachment time of water droplets, the quality of concrete maintenance is ensured, which is conducive to the formation of concrete strength and the improvement of durability. The central console can collect and analyze data during the maintenance process, providing data support for the optimization and scientific research of maintenance plans. Intelligent operation reduces the need for on-site operators and reduces labor costs. Due to the improvement of maintenance efficiency, the construction progress can be accelerated and the project cycle can be shortened, thereby reducing the overall construction cost.

[0028] Furthermore, by directly measuring the concrete surface temperature through the infrared temperature sensor installed on the nozzle, more accurate temperature control can be achieved, thereby optimizing the concrete curing process. The intelligent temperature-controlled water tank can adjust the spray water temperature according to the difference between the concrete surface temperature and the concrete standard temperature, which helps to reduce the thermal stress caused by the large temperature difference in concrete and reduce the risk of cracks. By automatically adjusting the spray water temperature, it can ensure that the concrete is always cured at a suitable temperature, improving the curing efficiency and quality. The intelligent temperature-controlled water tank only heats the spray water when the actual temperature difference of the concrete is greater than the standard temperature difference, which helps to save energy and reduce unnecessary heating. Automated operation reduces manual intervention, reduces the possibility of operating errors, and improves the intelligent level of construction management. The concrete standard temperature can be adjusted according to different concrete specifications and experimental environments, making the intelligent concrete curing trolley more adaptable. By controlling the spray water temperature, it is ensured that the concrete is not heated when the actual temperature difference is less than or equal to the standard temperature difference, which helps to maintain the strength and durability of the concrete.

[0029] Furthermore, according to the ratio of the water droplet evaporation area to the spraying area, the maintenance plan can be adjusted in real time to ensure that the concrete can be properly maintained under different environmental conditions. Avoiding excessive or insufficient spraying can save water resources and energy and reduce unnecessary cost expenditures. The combination of the image acquisition device and the central control console improves the automation level of the concrete curing process and reduces manual intervention. The device has video, photo and timing functions, and is easy to operate, manage and maintain. The images captured by the high-resolution camera can more accurately analyze the water droplet distribution and evaporation, and improve the reliability of the data. Real-time recording and analysis of the water droplet distribution image on the concrete surface can promptly identify problems and take measures to ensure that the maintenance process meets standard requirements.

[0030] Furthermore, the central console automatically compares the initial water drop evaporation time with the preset first water drop evaporation time, and the working mode of the maintenance trolley can be intelligently adjusted without manual intervention, thereby improving the automation level of the maintenance process. When the initial water drop evaporation time is less than the first water drop evaporation time, the continuous maintenance working mode is adopted to ensure that the concrete surface is always moist and avoid insufficient maintenance due to excessive evaporation of water. When the initial water drop evaporation time is greater than or equal to the first water drop evaporation time, the interval maintenance working mode is adopted to save water resources and reduce unnecessary spraying. The automated working mode determination process reduces human judgment and operation, and reduces maintenance errors caused by improper operation. The real-time monitoring and analysis function of the image acquisition device makes the maintenance process more transparent, making it easier to find problems and take measures in a timely manner. The working mode of the automated maintenance trolley reduces the labor intensity of on-site staff and saves labor costs. By rationally controlling the spraying, the waste of water resources is reduced.

[0031] Furthermore, by using infrared temperature sensors, the temperature of the concrete surface can be accurately monitored, thereby ensuring more accurate temperature control during the curing process. The central console automatically adjusts the nozzle atomization opening or the spray water temperature according to the first temperature comparison result, realizing the automation of the curing process, reducing manual intervention and improving work efficiency. By keeping the concrete surface temperature within the preset fluctuating temperature range, the concrete can be ensured to obtain the best curing conditions, thereby improving the strength and durability of the concrete. Intelligently adjusting the spray water temperature and the nozzle atomization opening can avoid energy waste and achieve energy-saving curing. By controlling the temperature of the concrete surface, concrete cracks caused by excessive temperature differences can be effectively prevented. Automated and precise curing management helps to improve the construction quality of construction projects such as tunnels and reduce rework and maintenance costs. By reasonably adjusting the nozzle atomization opening, the nozzle wear can be reduced and the service life of the nozzle and curing equipment can be extended. The continuous curing working mode of the curing trolley not only improves the efficiency and quality of concrete curing, but also provides a strong guarantee for the smooth progress of construction projects.

[0032] Furthermore, continuous monitoring and adjustment by infrared temperature sensors ensures accurate control of concrete surface temperature, which is beneficial to the quality and strength development of concrete. By adjusting the spray pressure of the nozzle according to the second temperature comparison result, the distribution and coverage effect of the spray water can be optimized to ensure uniform wetting of the concrete. By reducing unnecessary spray pressure, water resources and energy consumption are saved, while reducing the impact on the environment. Automatic adjustment of the spray pressure and opening of the heating device improves the automation level of the curing process, reduces manual intervention, and improves work efficiency. By ensuring that water droplets can be effectively sprayed on the concrete surface, the uniformity and quality of curing are improved. The spray pressure and heating device are automatically adjusted according to the actual temperature changes to adapt to different curing environments and concrete states. By controlling the concrete surface temperature, the risk of concrete cracking caused by temperature gradient is reduced. Reasonable adjustment of the nozzle spray pressure and atomization opening reduces the wear of the equipment and extends the service life of the equipment. The automated control system reduces the workload of operators and potential safety risks. The long-term stability and durability of the concrete structure are ensured. It is particularly important for modern large-scale construction projects and can significantly improve construction quality and engineering efficiency.

[0033] Furthermore, through continuous monitoring and adjustment by infrared temperature sensors, the temperature of the concrete surface can be more accurately controlled to ensure that it is within an appropriate range. When the third temperature comparison result shows that the third concrete surface temperature is less than the minimum value of the concrete surface fluctuation temperature range, by converting the spraying mode from a fixed spraying mode to a rotating spraying mode, the contact area between the water droplets and the concrete surface can be reduced, thereby reducing the heat taken away by the water droplets from the concrete surface. Due to the hydration reaction, the concrete surface temperature rises, avoiding the occurrence of cracks on the concrete surface due to excessive temperature difference between the inside and outside. The nozzle position and spraying mode are automatically adjusted according to the real-time monitored concrete surface temperature data to adapt to different maintenance needs and environmental conditions. By accurately controlling the spraying pressure and mode, unnecessary water and energy consumption are reduced, and energy conservation and environmental protection are achieved. The automated adjustment system reduces manual intervention and improves the efficiency of maintenance operations. By maintaining the uniformity of the concrete surface temperature, the risk of concrete cracking caused by temperature difference is reduced. Uniform temperature control helps to better maintain concrete, thereby improving its strength and durability. Reasonable spraying pressure and rotation speed reduce equipment wear and extend the service life of the nozzle and the entire maintenance system.

[0034] Furthermore, by monitoring the water droplet attachment area and evaporation time, the wetness of the concrete surface is evaluated, thereby optimizing the time and frequency of interval curing. The actual water droplet attachment time record helps to adjust the curing plan to adapt to different environmental conditions and concrete characteristics. The automation level of curing operations is improved, manual intervention is reduced, and curing efficiency is improved. It ensures that the concrete remains in an appropriate wet state during curing, which is conducive to the development of concrete strength and the improvement of durability. By adjusting the spraying cycle, it can be ensured that the concrete surface remains in an appropriate wet state during curing, which is conducive to the growth of concrete strength and the improvement of durability. The use of water resources is optimized, unnecessary spraying is avoided, and water resources and energy are saved. The intelligence and automation level of curing operations are improved, and the complexity and error rate of manual operations are reduced. The spraying cycle is dynamically adjusted according to the actual curing effect, which improves the flexibility and adaptability of curing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of a closed intelligent concrete curing trolley for a tunnel in this embodiment;

[0036] Figure 2 This is an enlarged schematic diagram of area A in the schematic diagram of the tunnel closed intelligent concrete curing trolley in this embodiment;

[0037] Figure 3 This is a flow chart of the process of selecting the working mode of the tunnel closed intelligent concrete curing trolley in this embodiment;

[0038] Figure 4 This is a flow chart of the process of adjusting the spray pressure of the sprinkler nozzles in the tunnel closed intelligent concrete curing trolley in this embodiment.

[0039] In the figure: 1-steering wheel; 2-support frame; 3-crossbeam; 4-column; 5-longitudinal beam; 6-nozzle; 7-bending support frame; 8-locking mechanism; 9-sliding assembly; 10-heating assembly; 11-infrared temperature sensor; 12-intelligent temperature control water tank; 13-image acquisition device; 14-center console; 15-barrier ring. DETAILED DESCRIPTION

[0040] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0042] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0043] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] See also Figure 1-Figure 4 As shown, Figure 1 This is a schematic diagram of a closed intelligent concrete curing trolley for a tunnel in this embodiment; Figure 2 This is an enlarged schematic diagram of area A in the schematic diagram of the tunnel closed intelligent concrete curing trolley in this embodiment; Figure 3 This is a flow chart of the process of selecting the working mode of the tunnel closed intelligent concrete curing trolley in this embodiment; Figure 4 This is a flow chart of the process of adjusting the spray pressure of the sprinkler nozzles in the tunnel closed intelligent concrete curing trolley in this embodiment.

[0045] This embodiment provides a tunnel closed intelligent concrete curing trolley, comprising:

[0046] A moving assembly, which is arranged at the bottom of the maintenance trolley and consists of a plurality of steering wheels 1 and a support frame 2, and is used for moving the maintenance trolley;

[0047] A gantry assembly, which is connected to the moving assembly, and is composed of a plurality of cross beams 3, columns 4 and longitudinal beams 5, wherein each cross beam is connected through the longitudinal beam and the diagonal tie rod;

[0048] A maintenance component, which is connected to the gantry assembly and is used for spraying concrete, and includes a curved support frame 7, a locking mechanism 8, a sliding component 9 and a plurality of movable spray heads 6;

[0049] A nozzle connected to a locking mechanism that can slide on the curved support frame, wherein the sliding range of the locking mechanism is controlled by a blocking ring 15, wherein the blocking ring is a component disposed between the sliding components to prevent the sliding components from falling, wherein the nozzle can adjust the nozzle spraying position, nozzle spraying pressure, nozzle spraying mode and nozzle atomization opening;

[0050] A heating assembly 10, which is arranged above the crossbeam and is used to adjust the ambient temperature in the tunnel;

[0051] An infrared temperature sensor 11 is provided on the nozzle and is used to detect the ambient humidity and concrete temperature in the tunnel;

[0052] An intelligent temperature-controlled water tank 12, which is arranged above the crossbeam and is used to adjust the temperature of the spray water;

[0053] An image acquisition device 13, which is connected to the nozzle and is used to acquire water drop image data in the concrete spraying area;

[0054] The central control panel 14 is arranged above the crossbeam and can automatically control the travel direction, travel speed and working mode of the maintenance trolley, wherein the intelligent temperature-controlled water tank adjusts the spray water temperature in the water tank according to the concrete surface temperature; the working mode of the maintenance trolley is determined by the initial water droplet evaporation time and the preset first water droplet evaporation time; the central control panel determines whether to adjust the nozzle atomization opening or the spray water temperature according to the first concrete surface temperature and the preset concrete surface fluctuation temperature range; determines whether to adjust the nozzle spray pressure or turn on the heating component according to the second concrete surface temperature and the preset concrete surface fluctuation temperature range; determines whether to adjust the adjacent nozzle position or the nozzle spray mode according to the third concrete surface temperature and the preset concrete surface fluctuation temperature range.

[0055] The central console can automatically control the travel direction, speed and working mode of the maintenance trolley, reducing manual operation and improving work efficiency. Through infrared temperature sensors and image acquisition devices, the temperature and moisture conditions of concrete can be monitored in real time to ensure that the maintenance conditions meet the requirements. The design of the mobile components and maintenance components enables the maintenance trolley to adapt to tunnels of different shapes and sizes, and the adjustability of the nozzle ensures the uniformity of the spraying. The intelligent temperature-controlled water tank can adjust the spray water temperature according to the surface temperature of the concrete to reduce energy consumption, and at the same time save water resources by adjusting the spray pressure and atomization opening of the nozzle. The heating component can adjust the ambient temperature in the tunnel to ensure effective concrete maintenance under low temperature conditions. The design of the blocking ring prevents the accidental drop of the sliding component and improves the safety of the operation of the maintenance trolley. By accurately controlling the spray cycle and the attachment time of water droplets, the quality of concrete maintenance is ensured, which is conducive to the formation of concrete strength and the improvement of durability. The central console can collect and analyze data during the maintenance process, providing data support for the optimization and scientific research of maintenance plans. Intelligent operation reduces the need for on-site operators and reduces labor costs. Due to the improvement of maintenance efficiency, the construction progress can be accelerated, the project cycle can be shortened, and the overall construction cost can be reduced.

[0056] Specifically, the infrared temperature sensor collects concrete temperature data to obtain the concrete surface temperature, and the intelligent temperature-controlled water tank adjusts the spray water temperature in the intelligent temperature-controlled water tank according to the difference between the concrete surface temperature and the concrete standard temperature to obtain the target spray water temperature.

[0057] The infrared temperature sensor is installed on the sprinkler to measure the concrete surface temperature. The intelligent temperature-controlled water tank adjusts the spray water temperature in the intelligent temperature-controlled water tank according to the difference between the concrete surface temperature and the concrete standard temperature.

[0058] Compare the concrete surface temperature with the spray water temperature in the intelligent temperature-controlled water tank to obtain the actual temperature difference of the concrete;

[0059] If the actual temperature difference of concrete is less than or equal to the standard temperature difference of concrete, the intelligent temperature control water tank will not heat the spray water inside it;

[0060] When the actual temperature difference of concrete is greater than the standard temperature difference of concrete, the intelligent temperature-controlled water tank heats the spray water inside it according to the difference between the actual temperature difference of concrete and the standard temperature difference of concrete;

[0061] Preferably, the concrete standard temperature difference is 8°C, and the concrete standard temperature difference is obtained in an experimental environment according to concrete specifications;

[0062] For example:

[0063] The actual temperature difference of concrete is 5°C, and the intelligent temperature-controlled water tank does not heat the spray water inside it;

[0064] The actual temperature difference of the concrete is 18°C. The intelligent temperature-controlled water tank heats the spray water inside it, raising the spray water temperature by a minimum of 10°C.

[0065] By directly measuring the concrete surface temperature through the infrared temperature sensor installed on the nozzle, more accurate temperature control can be achieved, thereby optimizing the concrete curing process. The intelligent temperature-controlled water tank can adjust the spray water temperature according to the difference between the concrete surface temperature and the standard temperature, which helps to reduce the thermal stress caused by the large temperature difference in concrete and reduce the risk of cracks. By automatically adjusting the spray water temperature, it can ensure that the concrete is always cured at a suitable temperature, improving the curing efficiency and quality. The intelligent temperature-controlled water tank only heats the spray water when the actual temperature difference of the concrete is greater than the standard temperature difference, which helps to save energy and reduce unnecessary heating. Automated operation reduces manual intervention, reduces the possibility of operating errors, and improves the intelligent level of construction management. The standard temperature difference of concrete can be adjusted according to different concrete specifications and experimental environments, making the intelligent concrete curing trolley more adaptable. By controlling the spray water temperature, it is ensured that the concrete is not heated when the actual temperature difference is less than or equal to the standard temperature difference, which helps to maintain the strength and durability of the concrete.

[0066] Specifically, the image acquisition device acquires water droplet distribution data of the concrete area after the initial spraying of the nozzle to obtain a water droplet distribution image, and the central control console analyzes the water droplet distribution image to obtain the initial water droplet evaporation time;

[0067] The initial water drop evaporation time is obtained according to a preset ratio of the water drop evaporation area to the spraying area of ​​the concrete area.

[0068] The image acquisition device and the nozzle are installed on the carrier together. The image acquisition device has the functions of video recording, photographing and timing, and can be a camera with high resolution. This embodiment does not specifically limit the image acquisition device, and any device with the functions of video recording, photographing and timing is within the scope of this invention.

[0069] Perform initial spraying on the newly poured concrete in the tunnel, and the initial water drop evaporation time is the time for the water droplets to evaporate in the concrete spraying area after the initial spraying;

[0070] Start the image acquisition device immediately after spraying, and continuously record the water droplet distribution image on the concrete surface. The moment when the water droplet evaporation area accounts for 95% of the spraying area is captured, and the recorded duration is the initial water droplet evaporation duration.

[0071] According to the proportion of the water drop evaporation area to the spraying area, the maintenance plan can be adjusted in real time to ensure that the concrete can be properly maintained under different environmental conditions. Avoiding over-spraying or under-spraying can save water resources and energy and reduce unnecessary cost expenditures. The combination of the image acquisition device and the central control console improves the automation level of the concrete curing process and reduces manual intervention. The device has video, photo and timing functions, and is easy to operate, manage and maintain. The images captured by the high-resolution camera can more accurately analyze the distribution and evaporation of water droplets and improve the reliability of the data. Real-time recording and analysis of the water droplet distribution image on the concrete surface can promptly identify problems and take measures to ensure that the maintenance process meets standard requirements.

[0072] Specifically, the central console determines the maintenance trolley working mode according to the initial water droplet evaporation time and the preset first water droplet evaporation time, wherein the maintenance trolley working mode includes a continuous maintenance working mode and an interval maintenance working mode.

[0073] Specifically, the continuous maintenance working mode is the working mode selected by the maintenance trolley when the initial water droplet evaporation time is less than the first water droplet evaporation time; the interval maintenance working mode is the working mode selected by the maintenance trolley when the initial water droplet evaporation time is greater than the first water droplet evaporation time.

[0074] If the initial water drop evaporation time is shorter than the first water drop evaporation time, the maintenance trolley working mode is selected as the continuous maintenance working mode;

[0075] When the initial water drop evaporation time is greater than or equal to the first water drop evaporation time, the maintenance trolley working mode is selected as the interval maintenance working mode;

[0076] Wherein, the evaporation time of the first water drop is determined based on laboratory testing;

[0077] Assuming that a newly poured tunnel concrete section is being cured, the following is the process of determining the working mode of the curing trolley:

[0078] The first water drop evaporation time is preset to 30 minutes on the center console. The first water drop evaporation time is determined based on laboratory tests and is used to determine the working mode of the maintenance trolley.

[0079] Perform initial spraying on the newly poured concrete, using the nozzle of the curing trolley to evenly spray water mist; After the initial spraying, immediately start the image acquisition device to record the distribution of water droplets on the concrete surface;

[0080] The image acquisition device continuously captures and analyzes the water droplet distribution image on the concrete surface. When the water droplet evaporation area reaches 95% of the spraying area, the time from the start of spraying to this moment is recorded, that is, the initial water droplet evaporation time;

[0081] The center console receives the initial water drop evaporation time, assuming the recorded time is 25 minutes;

[0082] The center console compares the recorded initial water drop evaporation time of 25 minutes with the preset first water drop evaporation time of 30 minutes;

[0083] When the initial water drop evaporation time of 25 minutes is less than the preset first water drop evaporation time of 30 minutes, the central console determines that the water on the concrete surface evaporates quickly, so the maintenance trolley is set to the continuous maintenance working mode, that is, continuous spraying to keep the concrete surface moist;

[0084] When the initial water drop evaporation time of 25 minutes is greater than or equal to the preset first water drop evaporation time of 30 minutes, the central console will set the maintenance trolley to the interval maintenance working mode, that is, it will stop after spraying for a period of time, and wait for a certain period of time before the next spraying, so as to save water resources and prevent excessive moisture on the concrete surface.

[0085] The central console automatically compares the initial water drop evaporation time with the preset first water drop evaporation time, and the working mode of the maintenance trolley can be intelligently adjusted without manual intervention, which improves the automation level of the maintenance process. When the initial water drop evaporation time is less than the first water drop evaporation time, the continuous maintenance working mode is adopted to ensure that the concrete surface is always moist and avoid insufficient maintenance due to excessive evaporation of water. When the initial water drop evaporation time is greater than or equal to the first water drop evaporation time, the interval maintenance working mode is adopted to save water resources and reduce unnecessary spraying. The automated working mode determination process reduces human judgment and operation, and reduces maintenance errors caused by improper operation. The real-time monitoring and analysis function of the image acquisition device makes the maintenance process more transparent, which facilitates timely detection of problems and measures. The working mode of the automated maintenance trolley reduces the labor intensity of on-site staff and saves labor costs. By reasonably controlling the spraying, the waste of water resources is reduced.

[0086] Specifically, the infrared temperature sensor continuously detects the concrete surface temperature in the continuous maintenance working mode to obtain a first concrete surface temperature. The central console compares the first concrete surface temperature with a preset concrete surface fluctuation temperature range to obtain a first temperature comparison result, and determines whether to adjust the nozzle atomization opening or the spray water temperature according to the first temperature comparison result.

[0087] Install infrared temperature sensors on the curing trolley to ensure that the sensors can accurately detect the temperature of the concrete surface;

[0088] When the first temperature comparison result shows that the first concrete surface temperature is within the concrete surface fluctuation temperature range, the nozzle atomization opening is sprayed at the initial nozzle atomization opening without adjustment;

[0089] For the case where the first temperature comparison result shows that the first concrete surface temperature is outside the concrete surface fluctuation temperature range, the following analysis is performed:

[0090] In the case where the first concrete surface temperature is less than the minimum value of the concrete surface fluctuation temperature interval, the intelligent temperature control water tank heats the spray water temperature to reach the first spray water temperature, and the first spray water temperature is the middle value of the concrete surface fluctuation temperature interval;

[0091] In the case where the first concrete surface temperature is greater than the maximum value of the concrete surface temperature fluctuation interval, based on the initial nozzle atomization opening, the central control console controls the nozzle atomization opening to be increased to the target nozzle atomization opening, and determines the target nozzle atomization opening according to the difference between the first concrete surface temperature and the maximum value of the concrete surface temperature fluctuation interval, wherein the target nozzle atomization opening is positively correlated with the difference between the first concrete surface temperature and the maximum value of the concrete surface temperature fluctuation interval;

[0092] For example: the preset minimum temperature fluctuation range of the concrete surface is 25℃, the minimum temperature fluctuation range of the concrete surface is 28℃,

[0093] When the first concrete surface temperature is 25°C, that is, the first concrete surface temperature is within the preset concrete surface fluctuation temperature range, the nozzle atomization opening is sprayed at the initial nozzle atomization opening without adjustment;

[0094] When the first concrete surface temperature is 20°C, that is, the first concrete surface temperature is less than the minimum value of the concrete surface fluctuation temperature range, the intelligent temperature control water tank heats the spray water temperature to 26.5°C;

[0095] When the first concrete surface temperature is 30°C, that is, the first concrete surface temperature is greater than the maximum value of the concrete surface fluctuation temperature range, the central control console controls the initial nozzle atomization opening to increase to the target nozzle atomization opening, wherein the initial nozzle atomization opening is 50%; the target nozzle atomization opening is 80%;

[0096] Among them, the initial atomizing nozzle opening is determined based on historical data.

[0097] By using infrared temperature sensors, the temperature of the concrete surface can be accurately monitored, thereby ensuring more accurate temperature control during the curing process. The central console automatically adjusts the nozzle atomization opening or the spray water temperature according to the first temperature comparison result, realizing the automation of the curing process, reducing manual intervention and improving work efficiency. By keeping the concrete surface temperature within the preset fluctuating temperature range, the concrete can be guaranteed to obtain the best curing conditions, thereby improving the strength and durability of the concrete. Intelligently adjusting the spray water temperature and the nozzle atomization opening can avoid energy waste and achieve energy-saving curing. By controlling the temperature of the concrete surface, concrete cracks caused by excessive temperature differences can be effectively prevented. Automated and precise curing management helps to improve the construction quality of construction projects such as tunnels and reduce rework and maintenance costs. By reasonably adjusting the nozzle atomization opening, the wear of the nozzle can be reduced and the service life of the nozzle and curing equipment can be extended. The continuous curing working mode of the curing trolley not only improves the efficiency and quality of concrete curing, but also provides a strong guarantee for the smooth progress of construction projects.

[0098] Specifically, the infrared temperature sensor collects the concrete surface temperature of the spraying area after adjusting the atomization opening of the nozzle to obtain a second concrete surface temperature. The central console compares the second concrete surface temperature with a preset concrete surface fluctuation temperature range to obtain a second temperature comparison result, and determines whether to adjust the nozzle spraying pressure or turn on the heating device based on the second temperature comparison result.

[0099] The infrared temperature sensor collects the concrete surface temperature of the spraying area after adjusting the nozzle atomization opening, which is the concrete surface temperature of the spraying area collected after the initial nozzle atomization opening is adjusted to the target nozzle atomization opening, i.e., the second concrete surface temperature. The central console compares the second concrete surface temperature with a preset concrete surface fluctuation temperature range to obtain a second temperature comparison result.

[0100] If the second temperature comparison result shows that the second concrete surface temperature is less than the minimum value of the concrete surface fluctuation temperature range, the central control console controls the nozzle spraying pressure to be reduced to the target nozzle spraying pressure, and the image acquisition device acquires the water drop height image sprayed at the target nozzle spraying pressure, and the central control console determines whether the water drop height can be sprayed to the concrete surface.

[0101] In the case where water droplets can be sprayed onto the concrete surface, the central console selects the target nozzle spraying pressure as the actual nozzle spraying pressure, and the actual nozzle spraying pressure is the nozzle spraying pressure actually selected by the curing trolley for curing concrete;

[0102] If the height of the water droplets is not high enough to spray onto the concrete surface, the central console controls the heating component to start heating the concrete, and the infrared temperature sensor detects the concrete surface temperature until the concrete surface temperature reaches the middle value of the concrete surface fluctuation temperature range, and then stops heating;

[0103] When the second temperature comparison result shows that the second concrete surface temperature is within the concrete surface fluctuation temperature range, the nozzle atomization opening is sprayed at the initial nozzle spraying pressure without adjustment;

[0104] When the second temperature comparison result shows that the second concrete surface temperature is greater than the maximum value of the concrete surface fluctuation temperature interval, based on the initial nozzle spraying pressure, the central control console controls the nozzle spraying pressure to be increased to the target nozzle spraying pressure, and determines the target nozzle spraying pressure according to the difference between the second concrete surface temperature and the maximum value of the concrete surface fluctuation temperature interval, wherein the target nozzle spraying pressure is positively correlated with the difference between the first concrete surface temperature and the maximum value of the concrete surface fluctuation temperature interval.

[0105] If the target nozzle spraying pressure cannot meet the spraying effect, that is, if the second concrete surface temperature is still greater than the maximum value of the concrete surface fluctuation temperature range after adjusting the target nozzle spraying pressure, the control console adjusts the nozzle atomization opening to the maximum nozzle atomization opening.

[0106] Continuous monitoring and adjustment by infrared temperature sensors ensures accurate control of concrete surface temperature, which is beneficial to the quality and strength development of concrete. Adjusting the spray pressure of the nozzle according to the second temperature comparison result can optimize the distribution and coverage effect of the spray water and ensure uniform wetting of the concrete. By reducing unnecessary spray pressure, water resources and energy consumption are saved, while reducing the impact on the environment. Automatic adjustment of spray pressure and opening of heating devices improves the automation level of the curing process, reduces manual intervention, and improves work efficiency. By ensuring that water droplets can be effectively sprayed on the concrete surface, the uniformity and quality of curing are improved. Automatic adjustment of spray pressure and heating devices according to actual temperature changes to adapt to different curing environments and concrete states. By controlling the concrete surface temperature, the risk of concrete cracking caused by temperature gradient is reduced. Reasonable adjustment of nozzle spray pressure and atomization opening reduces equipment wear and extends the service life of the equipment. The automated control system reduces the workload of operators and potential safety risks. Ensures the long-term stability and durability of concrete structures. It is particularly important for modern large-scale construction projects and can significantly improve construction quality and engineering efficiency.

[0107] Specifically, the infrared temperature sensor collects the concrete surface temperature of the spraying area after adjusting the spraying pressure of the nozzle to obtain a third concrete surface temperature. The central console compares the third concrete surface temperature with a preset concrete surface fluctuation temperature range to obtain a third temperature comparison result, and determines whether to adjust the position of the adjacent nozzle or the spraying mode of the nozzle according to the third temperature comparison result;

[0108] Wherein, the spraying position of the nozzle can be changed according to the rotation of the nozzle; the spraying mode of the nozzle includes a fixed spraying mode and a rotating spraying mode.

[0109] The infrared temperature sensor collects the concrete surface temperature of the spraying area after the nozzle spraying pressure is adjusted, which is the concrete surface temperature of the spraying area collected after the initial nozzle spraying pressure is adjusted to the target nozzle spraying pressure, i.e., the third concrete surface temperature. The central console compares the third concrete surface temperature with the preset concrete surface fluctuation temperature range to obtain a third temperature comparison result.

[0110] When the third temperature comparison result shows that the third concrete surface temperature is less than the minimum value of the concrete surface fluctuation temperature range, the central console controls the nozzle to switch from a fixed spraying mode to a rotating spraying mode, and the nozzle rotates and sprays at an initial rotating speed, wherein the initial rotating speed is a preset rotating speed;

[0111] When the third temperature comparison result shows that the third concrete surface temperature is within the concrete surface fluctuation temperature range, the central control console controls the nozzle spraying pressure to spray at the target nozzle spraying pressure, and the nozzle atomization opening to spray at the maximum nozzle atomization opening, without adjustment;

[0112] When the third temperature comparison result is that the third concrete surface temperature is greater than the maximum value of the concrete surface fluctuation temperature range, the central control console controls the adjacent nozzles to move the target distance toward the target nozzle, wherein the target nozzle is the nozzle when the third concrete surface temperature is less than the minimum value of the concrete surface fluctuation temperature range; the moving target distance is determined according to the spraying area of ​​each adjacent nozzle and the adjacent distance between each adjacent nozzle and the target nozzle, wherein the spraying area of ​​each adjacent nozzle is negatively correlated with the moving target distance, and the adjacent distance between each adjacent nozzle and the target nozzle is positively correlated with the moving target distance.

[0113] Through continuous monitoring and adjustment by infrared temperature sensors, the temperature of the concrete surface can be controlled more accurately to ensure that it is within an appropriate range. When the third temperature comparison result shows that the third concrete surface temperature is less than the minimum value of the concrete surface fluctuation temperature range, by converting the spraying mode from fixed spraying mode to rotary spraying mode, the contact area between the water droplets and the concrete surface can be reduced, thereby reducing the heat taken away by the water droplets from the concrete surface. Due to the hydration reaction, the concrete surface temperature rises, avoiding the occurrence of cracks on the concrete surface due to excessive temperature difference between the inside and outside. The nozzle position and spraying mode are automatically adjusted according to the real-time monitored concrete surface temperature data to adapt to different maintenance needs and environmental conditions. By accurately controlling the spraying pressure and mode, unnecessary water and energy consumption are reduced, and energy conservation and environmental protection are achieved. The automated adjustment system reduces manual intervention and improves the efficiency of maintenance operations. By maintaining the uniformity of the concrete surface temperature, the risk of concrete cracking caused by temperature difference is reduced. Uniform temperature control helps to better maintain concrete, thereby improving its strength and durability. Reasonable spraying pressure and rotation speed reduce equipment wear and extend the service life of the nozzle and the entire maintenance system.

[0114] Specifically, when the maintenance trolley selects the interval maintenance working mode, the image acquisition device acquires the image of the concrete spraying area to obtain the interval spraying area image, the central console analyzes the interval spraying area image to obtain the water droplet adhesion area of ​​the spraying area, and records the time for the water droplet adhesion area of ​​the spraying area to evaporate to the standard water droplet adhesion area to obtain the actual water droplet adhesion time.

[0115] Specifically, the spraying cycle of the interval maintenance working mode is adjusted according to the actual water droplet attachment time and the expected water droplet attachment time to obtain a target spraying cycle.

[0116] After the maintenance trolley completes a spraying operation, the image acquisition device automatically captures images of the spraying area. After receiving the images, the central console identifies the water droplet attachment area through the image analysis algorithm and calculates its area to obtain the water droplet attachment area of ​​the spraying area. The central console continuously monitors the change of the water droplet attachment area until it drops to the preset standard water droplet attachment area, and records the total time from the end of spraying to the droplet attachment area dropping to the standard water droplet attachment area, i.e., the actual water droplet attachment time.

[0117] The central console analyzes the actual water drop attachment time to assess whether the current spraying cycle meets the requirements of concrete maintenance.

[0118] If the actual water drop attachment time is less than or equal to the expected water drop attachment time, the center console shortens the spray cycle;

[0119] If the actual water drop attachment time is longer than the expected water drop attachment time, the center console will extend the spray cycle;

[0120] Based on the comparison between the actual water drop attachment time and the expected water drop attachment time, the center console adjusts the interval time for the next spray.

[0121] For example: the central console sets an initial spray cycle, spraying once every 4 hours.

[0122] After a spraying session, the center console recorded the actual water drop attachment time as 3 hours.

[0123] Since the actual water droplet attachment time is shorter than the expected water droplet attachment time, the center console shortens the spray cycle and the new target spray cycle is set to 3.5 hours.

[0124] The maintenance trolley carries out the next spraying according to the new spraying cycle.

[0125] By monitoring the water droplet attachment area and evaporation time, the wetness of the concrete surface is evaluated, thereby optimizing the time and frequency of interval curing. The actual water droplet attachment time record helps to adjust the curing plan to adapt to different environmental conditions and concrete characteristics. It improves the automation level of curing operations, reduces manual intervention, and improves curing efficiency. It ensures that the concrete remains in an appropriate wet state during curing, which is conducive to the development of concrete strength and the improvement of durability. By adjusting the spraying cycle, it can ensure that the concrete surface remains in an appropriate wet state during curing, which is conducive to the growth of concrete strength and the improvement of durability. It optimizes the use of water resources, avoids unnecessary spraying, and saves water resources and energy. It improves the intelligence and automation level of curing operations and reduces the complexity and error rate of manual operations. Dynamically adjust the spraying cycle according to the actual curing effect, and improve the flexibility and adaptability of curing operations.

[0126] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0127] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunnel closed intelligent concrete curing trolley, characterized in that: include, A moving assembly, which is arranged at the bottom of the maintenance trolley and consists of a number of steering wheels and a support frame, and is used for moving the maintenance trolley; A gantry assembly, which is connected to the moving assembly and is composed of a plurality of cross beams, columns and longitudinal beams, wherein each cross beam is connected to the longitudinal beam and the diagonal tie rod; A maintenance assembly, which is connected to the gantry assembly and is used for spraying concrete, and is composed of a number of movable spray heads, a curved support frame, a locking mechanism and a sliding member; A nozzle connected to a locking mechanism that can slide on the curved support frame, wherein the sliding range of the locking mechanism is controlled according to a blocking ring, wherein the blocking ring is a component disposed between the sliding components to prevent the sliding components from falling, wherein the nozzle can adjust the nozzle spraying position, nozzle spraying pressure, nozzle spraying mode and nozzle atomization opening; A heating component connected to the portal assembly and used to adjust the ambient temperature in the tunnel; An infrared temperature sensor is arranged on the nozzle and is used to detect the ambient humidity and concrete temperature in the tunnel; An intelligent temperature-controlled water tank, which is arranged above the crossbeam and is used to adjust the temperature of the spray water; An image acquisition device, connected to the nozzle, for acquiring water drop image data of the concrete spraying area; A central console, which is arranged above the crossbeam, can automatically control the travel direction, travel speed and working mode of the maintenance trolley, wherein the intelligent temperature-controlled water tank adjusts the spray water temperature in the water tank according to the concrete surface temperature; the working mode of the maintenance trolley is determined by the initial water drop evaporation time and the preset first water drop evaporation time; the central console determines whether to adjust the nozzle atomization opening or the spray water temperature according to the first concrete surface temperature and the preset concrete surface fluctuation temperature range; determines whether to adjust the nozzle spray pressure or turn on the heating component according to the second concrete surface temperature and the preset concrete surface fluctuation temperature range; determines whether to adjust the adjacent nozzle position or the nozzle spray mode according to the third concrete surface temperature and the preset concrete surface fluctuation temperature range; The initial water drop evaporation time is obtained according to a preset ratio of the water drop evaporation area to the spraying area of ​​the concrete area; The first concrete surface temperature is when the curing trolley selects the continuous curing working mode, the infrared temperature sensor continuously detects the concrete surface temperature; The second concrete surface temperature is the concrete surface temperature of the spraying area after the infrared temperature sensor collects and adjusts the atomization opening of the sprinkler; The third concrete surface temperature is the concrete surface temperature of the spraying area after the infrared temperature sensor collects and adjusts the spraying pressure of the sprinkler.

2. The tunnel closed intelligent concrete curing trolley according to claim 1 is characterized in that: The infrared temperature sensor collects concrete temperature data to obtain the concrete surface temperature, and the intelligent temperature-controlled water tank adjusts the spray water temperature in the intelligent temperature-controlled water tank according to the difference between the concrete surface temperature and the concrete standard temperature to obtain the target spray water temperature.

3. The tunnel closed intelligent concrete curing trolley according to claim 2 is characterized in that: The image acquisition device acquires water droplet distribution data in the concrete area after the initial spraying of the nozzle to obtain a water droplet distribution image, and the central control console analyzes the water droplet distribution image to obtain the initial water droplet evaporation time.

4. The tunnel closed intelligent concrete curing trolley according to claim 3 is characterized in that: The central console determines the maintenance trolley working mode according to the initial water drop evaporation time and the preset first water drop evaporation time, wherein the maintenance trolley working mode includes a continuous maintenance working mode and an interval maintenance working mode.

5. The tunnel closed intelligent concrete curing trolley according to claim 4 is characterized in that: The continuous maintenance working mode is the working mode selected by the maintenance trolley when the initial water droplet evaporation time is less than the first water droplet evaporation time; the interval maintenance working mode is the working mode selected by the maintenance trolley when the initial water droplet evaporation time is greater than the first water droplet evaporation time.

6. The tunnel closed intelligent concrete curing trolley according to claim 5 is characterized in that: When the maintenance trolley selects the continuous maintenance working mode, the infrared temperature sensor continuously detects the concrete surface temperature to obtain the first concrete surface temperature. The central console compares the first concrete surface temperature with the preset concrete surface fluctuation temperature range to obtain a first temperature comparison result. According to the first temperature comparison result, it is determined whether to adjust the nozzle atomization opening or adjust the spray water temperature.

7. The tunnel closed intelligent concrete curing trolley according to claim 6 is characterized in that: The infrared temperature sensor collects the concrete surface temperature of the spraying area after adjusting the nozzle atomization opening to obtain a second concrete surface temperature. The central console compares the second concrete surface temperature with a preset concrete surface fluctuation temperature range to obtain a second temperature comparison result, and determines whether to adjust the nozzle spraying pressure or turn on the heating component according to the second temperature comparison result.

8. The tunnel closed intelligent concrete curing trolley according to claim 7 is characterized in that: The infrared temperature sensor collects the concrete surface temperature of the spraying area after adjusting the spraying pressure of the nozzle to obtain a third concrete surface temperature. The central console compares the third concrete surface temperature with a preset concrete surface fluctuation temperature range to obtain a third temperature comparison result, and determines whether to adjust the position of the adjacent nozzle or the spraying mode of the nozzle according to the third temperature comparison result; Among them, the spraying angle of the nozzle can be changed according to the rotation of the nozzle; the spraying mode of the nozzle includes a fixed spraying mode and a rotating spraying mode.

9. The tunnel closed intelligent concrete curing trolley according to claim 8, characterized in that: When the maintenance trolley selects the interval maintenance working mode, the image acquisition device acquires the image of the concrete spraying area to obtain the interval spraying area image, the central console analyzes the interval spraying area image to obtain the water drop attachment area of ​​the spraying area, and records the time for the water drop attachment area of ​​the spraying area to evaporate to the standard water drop attachment area to obtain the actual water drop attachment time.

10. The tunnel closed intelligent concrete curing trolley according to claim 9, characterized in that: The spraying cycle of the interval maintenance working mode is adjusted according to the actual water drop attachment time and the expected water drop attachment time to obtain a target spraying cycle.

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