Intelligent steam curing trolley capable of achieving tunnel partition curing

Abstract

The invention relates to the field of tunnel secondary lining concrete curing, in particular to an intelligent steam curing trolley capable of achieving tunnel partition curing. Comprising walking wheels, a supporting door frame, an arc-shaped arch frame, an air bag, a water pump, an electromagnetic valve, a steam generation system and a partition maintenance system, the walking wheels are installed below the supporting door frame, the air bag is installed on the arc-shaped arch frame, supporting plates are fixedly installed on the two sides of the supporting door frame, and the water pump, the partition maintenance system and the steam generation system are arranged on the supporting plates; the steam generation system is connected with the partition maintenance system through a pipeline, and the partition maintenance system achieves partition maintenance by controlling the opening degree of an electromagnetic valve in each area. Compared with the prior art, the tunnel pouring section can be subjected to partitioned steam curing, energy and water consumption are reduced, and a better curing effect can be obtained.

Description

Technical Field

[0001] The invention relates to the field of tunnel secondary lining concrete maintenance, and in particular to an intelligent steam maintenance trolley capable of realizing tunnel zoning maintenance. Background Art

[0002] The essence of steam curing is to cause a series of physical, chemical and mechanical changes in concrete under the action of hot and humid media, thereby accelerating the formation of its internal structure and achieving the effect of early strength and rapid hardening. Steam curing can greatly shorten the curing time of concrete. Concrete can quickly reach the required strength under high temperature and humidity conditions;

[0003] Steam curing technology is now widely used in engineering construction. The steam curing of tunnel and tunnel engineering mainly relies on steam curing trolleys. Steam curing trolleys can provide the temperature, humidity and enclosed space required for steam curing of secondary lining concrete. However, the existing steam curing trolleys still have the following problems that have not been solved: (1) In the actual construction process, the length of the tunnel segment casting section is not fixed. When the concrete is insufficient or the end section appears during casting, the casting section length may be shorter than the designed casting section length. How can a more energy-saving and environmentally friendly steam curing be implemented for the casting section that is shorter than the designed length? (2) The thickness of the secondary lining concrete of some tunnels is not uniform, and some parts are thicker. How can a more efficient steam curing be implemented for these thicker secondary lining concrete parts? (3) After completing the maintenance according to the maintenance requirements, some maintenance areas may not be properly maintained. How can the under-maintained areas be re-steam cured in a more energy-saving and environmentally friendly way?

[0004] A steam curing trolley for tunnel construction with patent application number CN216808633U comprises an inner bracket, a walking structure is installed at the bottom end of the inner bracket, a supporting structure is arranged on the side and the top end of the inner bracket, arc brackets are detachably installed at both ends of the supporting structure, and a steam curing structure is installed on the outside of the supporting structure between the arc brackets, and the outside of the steam curing structure is covered with a waterproof cloth; a heating curing zone, a constant temperature curing zone and a cooling curing zone are respectively arranged on the outside of the steam curing structure, and the inner lining layer of each zone is cured by a zoned curing method, thereby forming an assembly line operation, and the inner lining of each zone can undergo a curing process of heating, constant temperature and cooling through overall movement, thereby realizing intelligent control of temperature and humidity of tunnel curing, and can significantly improve the strength and surface density of tunnel lining concrete. The above device has a fixed overall structure and is only applicable to tunnels of fixed length or width. The device has poor maintenance effect at the end of the tunnel and in tunnels shorter than the designed casting section length. In addition, the above device cannot control the flow rate of the nozzle during tunnel maintenance, which may cause waste of resources. Therefore, it is urgent for those skilled in the art to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and to provide an intelligent steam curing trolley that can realize tunnel zoning maintenance. The intelligent steam curing trolley that can realize tunnel zoning maintenance divides the curing area of ​​the steam curing trolley into two parts, a front and a rear part, and an annular air bag can be added between the front and the rear parts, so that it can adapt to the end section of the tunnel and the tunnel shorter than the designed casting section length, and can perform steam curing on them in a more energy-saving and efficient manner. Controlling the flow rate of the nozzle by an electromagnetic valve can achieve the purpose of saving resources.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An intelligent steam maintenance trolley capable of realizing tunnel zoning maintenance comprises running wheels, a supporting portal, an arc-shaped arch frame, an airbag, a water pump, a solenoid valve, a steam generating system and a zoning maintenance system; the running wheels are installed under the supporting portal, and the airbag is installed on the arc-shaped arch frame; support plates are fixedly installed on both sides of the supporting portal, and the water pump, the zoning maintenance system and the steam generating system are arranged on the support plates, the steam generating system is connected to the zoning maintenance system through a pipeline, and the zoning maintenance system consists of a steam main pipeline, a steam branch pipeline, the solenoid valve and a nozzle; the solenoid valve is provided between the steam main pipeline and the steam branch pipeline to control the air output, and the nozzle is trumpet-shaped; the zoning maintenance system realizes zoning maintenance by controlling the opening of the solenoid valve.

[0008] Furthermore, transverse supports and vertical supports are provided between the supporting portal and the arc-shaped arch frame, and the supporting portal and the arc-shaped arch frame are detachably connected; the walking wheels installed under the supporting portal frame are driven by the secondary lining concrete trolley; the arc-shaped arch frame is provided with a plurality of through holes for connecting the nozzle with the pipe under the arc-shaped arch frame; there is a maintenance gap between the arc-shaped arch frame and the outer layer of the secondary lining concrete of the tunnel, and the height of the maintenance gap is consistent along the circumferential direction.

[0009] The setting of horizontal and vertical supports increases the structural stability of the entire maintenance trolley, ensuring that it can withstand various loads without deformation when operating in a complex tunnel environment, and ensuring the safety and reliability of the maintenance process. The detachable connection method facilitates the transportation, installation and maintenance of the equipment. The detachable connection design of the support portal and the arc arch frame enables the maintenance trolley to be quickly adjusted and assembled according to the specific size and shape of the tunnel, improving the versatility and adaptability of the equipment. At the same time, this design is also conducive to the storage and transportation of the equipment, reducing logistics costs. The travel wheel is driven by the secondary lining concrete trolley, making full use of existing equipment resources, simplifying the design of the power system, reducing the installation and maintenance costs of the separate drive system, and improving the overall efficiency of the maintenance operation. The reserved through-hole design makes the connection between the nozzle and the lower pipe easier and faster, facilitating the installation and adjustment of the nozzle position, ensuring that the maintenance steam can evenly and effectively cover the surface of the tunnel secondary lining concrete, and improving the efficiency and quality of the maintenance operation.

[0010] Furthermore, the airbags include annular airbags and longitudinal airbags, and the airbags, the waterproof and thermal insulation cloth and the inner wall of the tunnel constitute a sealing system; the sealing system includes the annular airbags installed on the upper part of the arc-shaped arch frame, the waterproof and thermal insulation cloth installed on the surface of the arc-shaped arch frame, and the longitudinal airbags installed at the bottom of both ends of the arc-shaped arch frame; the inner wall of the tunnel, the annular airbags, the waterproof and thermal insulation cloth and the longitudinal airbags are in close contact with each other, and together constitute the sealing system.

[0011] The annular airbags and longitudinal airbags together with the waterproof insulation cloth form a closed heat preservation and moisture retention space, effectively isolating the influence of the external environment on the curing area. This helps to maintain a constant temperature and humidity in the tunnel, provide ideal curing conditions for concrete, accelerate its hardening process, and improve concrete strength and durability. By forming a sealed system, steam heat and moisture can be concentrated and efficiently utilized, reducing energy loss during the curing process, shortening the curing cycle, and improving curing efficiency. Especially in cold or dry environments, the sealing system is particularly important for maintaining the necessary maintenance environment. The waterproof insulation cloth can not only keep warm, but also effectively prevent external moisture from penetrating into the concrete surface, while reducing condensation caused by internal steam condensation, avoiding concrete quality problems caused by improper moisture, such as surface erosion, internal structure degradation, etc. The sealing system not only provides a good maintenance environment, but also plays a certain protective role on the inner wall of the tunnel, avoiding physical damage or chemical corrosion to the tunnel wall that may be caused during the maintenance process. The design of the annular and longitudinal airbags can be adjusted according to the actual shape and size of the tunnel to ensure the tightness and sealing performance of the sealing system. It is suitable for the maintenance of tunnels of various diameters and lengths, which improves the versatility and applicability of the equipment.

[0012] Furthermore, the waterproof thermal insulation cloth is provided with a plurality of through holes, the number and positions of the through holes correspond to the arc-shaped arch through holes; the waterproof thermal insulation cloth is made of microfiber thermal insulation cotton cloth, and a temperature and humidity sensor is also provided on the surface of the waterproof thermal insulation cloth.

[0013] The temperature and humidity sensors installed on the surface of the waterproof insulation cloth can monitor the temperature and humidity changes in the curing area in real time, ensuring that the curing conditions always meet the optimal requirements for concrete curing. This precise environmental monitoring is conducive to timely adjustment of the curing strategy, ensuring the curing effect, and avoiding curing quality problems caused by environmental factors. The through holes reserved in the waterproof insulation cloth correspond to the through holes on the arc arch frame, ensuring that the steam can smoothly pass through the nozzle and be evenly distributed to the concrete surface without local curing due to material obstruction. This not only maintains good sealing, but also ensures the effective transmission of curing steam, improving the uniformity and efficiency of curing.

[0014] Furthermore, the steam generation system includes a steam generator and a water tank, the water tank supplies water to the steam generator, and the steam generator generates high-temperature steam.

[0015] The water tank directly supplies water to the steam generator, ensuring the continuity and immediacy of steam generation, and can quickly respond to maintenance needs and continuously provide the required steam to the maintenance area. This is crucial for tunnel maintenance work that requires strict control of the maintenance environment (such as temperature and humidity), and helps to improve maintenance efficiency and quality. The integrated steam generation system is usually equipped with a user-friendly control panel, which is convenient for operators to monitor and adjust steam production. At the same time, the compact design of the system is also conducive to daily maintenance and troubleshooting, reducing the difficulty of operation and maintenance costs. The continuous and stable steam supply ensures the uniformity and constant temperature and humidity in the maintenance area, which helps the uniform hardening of concrete, reduces the occurrence of cracks, and improves the strength and durability of the tunnel structure, thereby ensuring the overall maintenance quality.

[0016] Furthermore, the water pump is connected to the drain port at the proximal end of the longitudinal airbag through a pipeline, and the water pump draws the condensed steam water into the water tank for reuse by the steam generation system.

[0017] The condensed water is collected and pumped back to the water tank by a water pump, realizing the recycling and reuse of steam condensed water during the maintenance process, greatly saving water resources, reducing water consumption in maintenance operations, and reflecting the concept of environmental protection and sustainable development. The recycling of water reduces the demand for external water sources, and correspondingly reduces water bill expenditures, while also reducing the cost of transporting and treating wastewater, thereby reducing the overall economic cost of maintenance operations. The automated condensed water recovery system ensures that the water volume in the water tank is continuously sufficient, avoiding maintenance interruptions due to water shortage, improving the continuity and efficiency of maintenance operations, and timely removing condensed water in the maintenance area helps maintain a dry maintenance environment, reducing concrete surface quality problems that may be caused by excessive humidity, such as surface softening and uneven color, and ensuring maintenance quality.

[0018] Furthermore, the zoned maintenance system consists of a front part and a rear part, and the front part and the rear part are each divided into four zones, a total of 8 zones, namely zones I to VIII; the annular airbag can be added between the front part and the rear part according to maintenance needs.

[0019] The maintenance area is divided into 8 independent maintenance intervals (Zones I to VIII), allowing for differentiated and refined maintenance strategies to be implemented according to the specific conditions and maintenance needs of different sections of the tunnel. For example, the steam supply and maintenance time of each area can be adjusted according to the concrete age, temperature sensitivity or structural characteristics of different locations, so as to more accurately control the maintenance process and improve the maintenance effect. The design of annular airbags can be added between the front and rear, which means that the maintenance area can be flexibly increased and the maintenance coverage can be expanded according to the actual tunnel length or the needs of a specific maintenance stage. This improves the adaptability and flexibility of the equipment, so that a maintenance trolley can meet the needs of more diverse maintenance tasks. Zoning maintenance can allocate steam resources in a targeted manner, avoiding excessive investment in areas where steam is not needed or less needed, thereby effectively utilizing energy, reducing waste and saving costs. Refined zoning enables each area to receive the most suitable maintenance for its current state, accelerates the uniform hardening of concrete, reduces problems such as uneven strength and cracks that may be caused by uneven maintenance, and ultimately improves the stability and durability of the entire tunnel structure.

[0020] Furthermore, the steam main pipe and the steam branch pipe are arranged under the arc-shaped arch frame, and the steam main pipe, the steam branch pipe and the arc-shaped arch frame are fixed by fixing rods, and the fixing rods are fastened by bolts; the nozzle and the steam branch pipe are in the through holes reserved in the arc-shaped arch frame, and the steam branch pipe and the arc-shaped arch frame are connected by threads.

[0021] The steam main pipe and branch pipe are laid under the arc arch and fastened by fixing rods and bolts. This design ensures the stability and safety of the pipeline system. Even in the complex or dynamic working environment in the tunnel, it can effectively prevent the pipeline from shaking and falling off, reducing safety hazards. The steam branch pipe and the arc arch are connected by threaded connection, and the fixing method of fixing rods and bolts makes the installation and disassembly of the pipeline easier, which is convenient for daily inspection, maintenance and necessary repair and replacement work, ensuring the continuity of maintenance operations and the reliability of the system. The nozzle is directly connected to the steam branch pipe through the reserved through hole, and the threaded connection between the steam branch pipe and the arc arch ensures the sealing of the steam transmission path, which helps to accurately control the steam flow direction and flow rate, ensuring that each maintenance area can obtain a stable and appropriate amount of steam supply, improving the uniformity and effectiveness of maintenance. The pipeline is laid under the arc arch, which not only makes reasonable use of space and reduces the occupation of maintenance space, but also makes it more convenient to move personnel and equipment during maintenance operations, improving work efficiency.

[0022] Furthermore, the water pump, the steam generator, the temperature and humidity sensor, and the solenoid valve are all controlled by an intelligent temperature control center.

[0023] Through the centralized control of the intelligent temperature control center, the operation of all key components has been automated and intelligent, which greatly reduces the burden of manual operation and improves the efficiency and accuracy of maintenance operations. The system can automatically adjust the working status of each component according to the preset parameters and actual detection data to ensure the optimization of the maintenance environment. The temperature and humidity sensors monitor the data in real time and feed it back to the intelligent temperature control center, which dynamically adjusts the output of the steam generator, the opening and closing status of the solenoid valve, and the operation of the water pump based on these data, thereby achieving precise control of the temperature and humidity in the maintenance area. This helps to create the most suitable ideal environment for concrete maintenance, accelerate the growth of concrete strength, and reduce maintenance defects. The intelligent temperature control center can accurately control steam generation and water circulation according to actual needs, avoiding excessive consumption of energy and water resources, and achieving energy saving and consumption reduction. The automatic adjustment function ensures the efficient use of resources and reduces maintenance costs.

[0024] The present invention has the following beneficial effects:

[0025] 1. The maintenance area is further divided into 8 zones based on the front and rear parts. The air intake is controlled by controlling the opening of the solenoid valve in each zone. The areas with thicker concrete in the pouring section and the areas with insufficient maintenance are maintained in different zones, which not only achieves more efficient maintenance but also saves energy and water.

[0026] 2. The steam curing trolley curing area is divided into two parts, front and rear, and an annular air bag can be added between the front and rear parts, so that it can adapt to the end section of the tunnel and the tunnel shorter than the designed casting section length, and steam curing can be more energy-saving and efficient;

[0027] 3. A drain outlet is set up to discharge the condensed water during the steam curing process, and the water is pumped into the water tank for reuse by the system, which indirectly reduces the water consumption during the curing process. Compared with directly discharging the condensed water on the tunnel surface, this design will not cause water accumulation in the tunnel, creating a better working environment for construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the main structure of the intelligent steam curing trolley in the present invention;

[0029] Figure 2 It is a schematic diagram of the zone maintenance layout of the intelligent steam maintenance trolley in the present invention;

[0030] Figure 3 It is a schematic diagram of the connection between the nozzle and the steam branch pipe and the fixing of the steam branch pipe in the present invention;

[0031] Figure 4 It is a schematic diagram of fixing the steam main pipeline in the present invention;

[0032] Figure 5 The present invention is a flowchart of the steam curing trolley.

[0033] Among them are: 1-supporting door frame; 2-walking wheel; 3-steam branch pipe; 4-lateral support; 5-water tank; 6-water pump; 7-steam main pipe; 8-second lining concrete layer; 9-arc arch frame; 10-annular airbag; 11-nozzle; 12-vertical support; 13-waterproof insulation cloth; 14-ventilation pipe bracket; 15-temperature and humidity sensor; 16-steam generator; 17-intelligent control center; 18-airbag drain outlet; 19-longitudinal airbag; 20-solenoid valve; 21-thread; 22-fixing rod; 23-bolt. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0035] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second" and the like do not indicate the importance of the components, and therefore cannot be understood as limiting the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0036] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 It can be seen that an intelligent steam curing trolley capable of realizing tunnel zoning maintenance comprises a support gantry 1, two running wheels 2 are respectively installed on both sides of the bottom of the support gantry 1, and the running wheels of the steam curing trolley are driven by the second lining concrete trolley in the tunnel. The left and right sides of the support gantry 1 are provided with lateral supports 4, and the top of the support gantry 1 is provided with vertical supports 12, and the lateral supports 4 and the vertical supports 12 are connected to the arc-shaped arch frame 9 to support the arc-shaped arch frame 9. An annular airbag 10 is installed on the upper part of the arc-shaped arch frame 9, and longitudinal airbags 19 are installed at the bottom of both ends of the arc-shaped arch frame 9. The surface of the arc-shaped arch frame 9 is provided with a waterproof insulation cloth 13, and the arc-shaped arch frame 9 and the waterproof insulation cloth 13 have through holes for the nozzle 11 and the steam branch pipe 3 to be connected, and the number and position of the through holes correspond to the nozzle 11 one by one; the annular airbag 10, the longitudinal airbag 19 and the waterproof insulation cloth 13 are tightly fitted, and together form a sealing system for steam curing of the second lining concrete. Temperature and humidity sensors 15 are installed on the waterproof insulation cloth 13 corresponding to the position of each zone, and a total of 8 temperature and humidity sensors 15 are arranged to monitor the temperature and humidity of the environment in each zone. The temperature and humidity data are transmitted to the intelligent control center 17 in real time through the wireless network. Support plates are installed on both sides of the support door frame 1. A water tank 5 and a water pump 6 are placed on the left support plate, and a water tank 5, a water pump 6, a steam generator 16 and an intelligent temperature control center 17 are placed on the right support plate; the water pump 6 is connected to the drain port 18 through a pipeline to extract the condensed steam water to the water tank 5 for reuse. The steam generator 16 transports high-temperature steam to the steam main pipeline 7 through a pipeline. A solenoid valve 20 is installed between the steam branch pipeline 3 of each zone and the steam main pipeline 7. The air intake of each zone is controlled by controlling the opening of the solenoid valve 20 of each zone to achieve zone maintenance. The steam main pipe 7 and the steam branch pipe 3 are fixedly installed under the arc arch 9 through fixing rods 22 and bolts 23. The steam branch pipe 3 passes through the through holes left in the arc arch 9 and the waterproof insulation cloth 13 and is connected to the nozzle 11 through a thread 21. The nozzle 11 evenly diffuses and sprays the high-temperature steam.

[0037] In one embodiment, when performing tunnel maintenance, first ensure that all hardware devices (such as temperature and humidity sensors 15, solenoid valves 20, water pumps 6, and steam generators 16) have been correctly installed and connected to the intelligent control center 17. Then, start the intelligent control center 17, perform system self-checks, and ensure that all components are operating normally. The staff sets the target temperature and humidity range, curing time, steam pressure and other parameters according to the maintenance requirements and concrete characteristics through the interface of the intelligent control center 17 or the remote terminal. At the same time, configure the specific location of each temperature and humidity sensor 15 monitoring area and the corresponding maintenance standard. The temperature and humidity sensor 15 continuously monitors the real-time temperature and humidity of each area, and the data is transmitted to the intelligent control center 17 in real time through the wireless network. The intelligent control center 17 summarizes and analyzes the data, and displays it intuitively on the monitoring interface, so that the operator can understand the maintenance status at any time. The intelligent control center 17 automatically compares the difference between the current temperature and humidity and the set target value based on the collected data, and dynamically adjusts the opening of the solenoid valve 20 in each area. When a certain area needs to increase steam supply, the electromagnetic valve 20 of the corresponding area will be opened or opened wider, otherwise it will be reduced or closed to maintain the temperature and humidity of each area within the ideal range. The water pump 6 and the steam generator 16 automatically adjust the speed of the water pump 6 and the output power of the steam generator 16 according to the maintenance requirements and steam supply conditions, and the intelligent control center 17 ensures stable and efficient steam supply. At the same time, the condensed water is recycled by the water pump 6 and discharged into the water tank 5, which saves resources and maintains the continuous operation capability of the system.

[0038] Reference Figure 2 and Figure 5 It can be seen that the steam curing area is divided into the front and the rear, and the front and the rear are each divided into four zones, a total of eight zones, namely zones Ⅰ to Ⅷ, each zone is arranged with a solenoid valve 20 and a temperature and humidity sensor 15. An annular air bag 10 can be added between the front and the rear according to the curing requirements to adapt to the steam curing of casting sections of different lengths. The water pump 6, the steam generator 16, the temperature and humidity sensor 15, and the solenoid valve 20 are all controlled by the intelligent temperature control center 17.

[0039] In one embodiment, when it is necessary to perform steam curing on the tunnel secondary lining concrete, a trolley is assembled outside the tunnel in advance, and after being driven to the designated curing area by the tunnel secondary lining concrete trolley, the air pump is turned on to inflate the annular airbag 10 and the longitudinal airbag 19 so that they fit tightly with the inner wall of the tunnel and the waterproof insulation cloth 13. The annular airbag 10, the longitudinal airbag 19, the waterproof insulation cloth 13 and the inner wall of the tunnel together form a closed space required for curing. The steam generator 16 is turned on to generate high-temperature steam, and the high-temperature steam is transported to the steam main pipeline 7 and the steam branch pipelines 3 of each zone through pipelines, and is evenly sprayed out by the nozzle 11. The steam condensate is pumped out from the drain port 18 to the water tank 5 by the water pump 6, and reused by the steam generator 16. The water pump 6, the steam generator 16 and the temperature and humidity sensor 15 are all controlled by the intelligent control center 17. The temperature and humidity sensor 15 monitors the curing temperature in real time. When the set temperature is exceeded, the system will issue an alarm;

[0040] The steam curing area is divided into 8 zones, 4 zones in the front and 4 zones in the rear, which are zones I to VIII in sequence. The lengths of the front and rear are the same or the length of the front is greater than that of the rear. An annular airbag 10 can be added between the front and rear zones to accommodate steam curing of casting modules of different lengths. When the length of the tunnel one-time casting module does not exceed the length of the rear, the solenoid valves 20 of zones I, II, III, and IV are closed, and the solenoid valves of zones V, VI, VII, and VIII are opened to introduce high-temperature steam. At the same time, an annular airbag 10 is added between the front and rear zones to form a closed space at the rear, which can not only steam-curing the tunnel concrete more efficiently, but also save energy and water resources. When the length of the tunnel one-time casting module exceeds the length of the rear, but does not exceed the length of the front, the solenoid valves of zones V, VI, VII, and VIII are closed, and the solenoid valves 20 of zones I, II, III, and IV are opened to introduce high-temperature steam. At the same time, an annular airbag 10 is added between the front and rear zones to form a closed space at the front for steam curing. When the length of the tunnel one-time pouring module exceeds the front length, the solenoid valves of all 8 zones are opened to pass high-temperature steam for steam curing. If the steam curing effect in some areas is not good or the concrete thickness is large, the opening of the solenoid valve 20 in this area can be increased separately to increase the steam intake in this area and achieve more efficient steam curing. If it is found that the concrete strength in a certain area does not reach the design effect after the steam curing is completed, the solenoid valve 20 in this area can be opened and the solenoid valves 20 in other areas can be closed to achieve steam curing for the specific area.

[0041] The preferred embodiments of the present invention are described in detail above; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. An intelligent steam maintenance trolley capable of realizing tunnel zoning maintenance, characterized in that: It includes walking wheels, a supporting portal, an arc-shaped arch frame, an airbag, a water pump, a solenoid valve, a steam generating system and a partition maintenance system; the walking wheels are installed under the supporting portal, and the airbag is installed on the arc-shaped arch frame; support plates are fixedly installed on both sides of the supporting portal, and the water pump, the partition maintenance system and the steam generating system are placed on the support plates, the steam generating system is connected to the partition maintenance system through pipelines, and the partition maintenance system consists of a steam main pipeline, a steam branch pipeline, the solenoid valve and a nozzle; the solenoid valve is provided between the steam main pipeline and the steam branch pipeline to control the air output, and the nozzle is trumpet-shaped; the partition maintenance system realizes partition maintenance by controlling the opening of the solenoid valve.

2. According to claim 1, the intelligent steam curing trolley capable of realizing tunnel zoning curing is characterized in that: A transverse support and a vertical support are provided between the support portal and the arc-shaped arch frame, and the support portal and the arc-shaped arch frame are detachably connected; the walking wheels installed under the support portal frame are driven by the secondary lining concrete trolley; the arc-shaped arch frame is provided with a plurality of through holes for connecting the nozzle with the pipe under the arc-shaped arch frame; a maintenance gap exists between the arc-shaped arch frame and the outer layer of the secondary lining concrete of the tunnel, and the height of the maintenance gap is consistent along the circumferential direction.

3. The intelligent steam curing trolley capable of realizing tunnel zoning curing according to claim 1 is characterized in that: The airbags include annular airbags and longitudinal airbags, and the airbags, the waterproof and thermal insulation cloth and the inner wall of the tunnel constitute a sealing system; the sealing system includes the annular airbags installed on the upper part of the arc-shaped arch frame, the waterproof and thermal insulation cloth installed on the surface of the arc-shaped arch frame and the longitudinal airbags installed at the bottom of both ends of the arc-shaped arch frame; the inner wall of the tunnel, the annular airbags, the waterproof and thermal insulation cloth and the longitudinal airbags are in close contact with each other, and together constitute the sealing system.

4. The intelligent steam curing trolley capable of realizing tunnel zoning curing according to claim 3 is characterized in that: The waterproof thermal insulation cloth is provided with a plurality of through holes, the number and positions of the through holes correspond to the through holes of the arc-shaped arch frame; the waterproof thermal insulation cloth is made of microfiber thermal insulation cotton cloth, and a temperature and humidity sensor is also arranged on the surface of the waterproof thermal insulation cloth.

5. The intelligent steam curing trolley capable of realizing tunnel zoning curing according to claim 1 is characterized in that: The steam generation system includes a steam generator and a water tank. The water tank supplies water to the steam generator. The steam generator generates high-temperature steam.

6. The intelligent steam curing trolley capable of realizing tunnel zoning curing according to claim 1 is characterized in that: The water pump is connected to the drain port at the proximal end of the longitudinal airbag through a pipeline, and the water pump draws the condensed steam water into the water tank for reuse by the steam generation system.

7. The intelligent steam curing trolley capable of realizing tunnel zoning curing according to claim 1 is characterized in that: The zoned maintenance system is composed of a front part and a rear part, and the front part and the rear part are each divided into four zones, a total of 8 zones, namely zones I to VIII; the annular airbag can be added between the front part and the rear part according to maintenance needs.

8. The intelligent steam curing trolley capable of realizing tunnel zoning curing according to claim 1 is characterized in that: The steam main pipe and the steam branch pipe are arranged under the arc-shaped arch frame, and the steam main pipe, the steam branch pipe and the arc-shaped arch frame are fixed by fixing rods, and the fixing rods are fastened by bolts; the nozzle and the steam branch pipe are in the through holes reserved in the arc-shaped arch frame, and the steam branch pipe and the arc-shaped arch frame are connected by threads.

9. The intelligent steam curing trolley capable of realizing tunnel zoning curing according to claim 1 is characterized in that: The water pump, the steam generator, the temperature and humidity sensor, and the solenoid valve are all controlled by an intelligent temperature control center.

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