Automatic maintenance method for high and large thin-wall aqueduct body concrete

Abstract

The invention discloses an automatic maintenance method for concrete of a high, large and thin-wall aqueduct body, which adopts an automatic maintenance system to realize automatic maintenance of the concrete of the aqueduct body and comprises the following steps: step 1, completing assembly of an automatic walking system; secondly, the automatic walking system is hoisted to the top of the aqueduct and stretches across the aqueduct; thirdly, the precise spraying system is installed on a base of the automatic walking system; fourthly, a storage battery of the power supply and manual control system is installed on the top of the base, and the power supply and manual control system further comprises a wireless remote control terminal; 5, an environment temperature monitoring system is installed on the inner wall of the aqueduct body; sixthly, the aqueduct body concrete is automatically cured through the automatic curing system, the curing method not only adapts to different aqueduct sections, but also achieves intelligent curing control, and the curing coverage rate is increased while potential safety hazards of operation are eliminated.

Description

Technical Field

[0001] This invention relates to the field of aqueduct construction technology, and in particular to an automatic curing method for the concrete of a tall, thin-walled aqueduct. Background Technology

[0002] As the core structure for water conveyance (modern aqueducts are usually made of reinforced concrete), the quality of concrete curing plays a crucial role in the structural durability. To avoid cracks and meet high crack resistance standards, the surface humidity is generally required to be no less than 90% within seven days after pouring.

[0003] Traditional manual spraying maintenance methods have the following limitations: 1. For aqueducts that traverse complex terrain and have large, thin-walled sections (generally over 20m in height and 15-20cm in wall thickness), the risk of falls during manual high-altitude operations is extremely high; 2. Manual watering cannot cover the bottom and inner corners of U-shaped aqueducts, with a coverage rate of less than 80%, which can easily lead to shrinkage cracks; 3. It relies on manual experience for control and lacks intelligent logic such as timed and temperature-linked systems; 4. Traditional equipment cannot be adapted to wide cross-sections (generally 2.9-4.7m in width), requiring the customization of multiple sets of equipment, which is costly and inefficient. Summary of the Invention

[0004] One of the objectives of this invention is, at least, to provide an automatic curing method for the concrete body of tall, thin-walled aqueducts, addressing the problems existing in the prior art. This method not only adapts to different aqueduct cross-sections but also achieves intelligent curing control, eliminating operational safety hazards while improving curing coverage.

[0005] To achieve the above objectives, the technical solution adopted by the present invention includes the following aspects.

[0006] An automatic curing method for the concrete of a tall, thin-walled aqueduct, employing an automatic curing system to achieve automatic curing of the aqueduct's concrete, includes the following steps: Step 1: Complete the assembly of the automatic walking system: Make a base with multiple sets of mounting holes. According to the cross-sectional width of the aqueduct, the walking components and the local control cabinet are detachably mounted on the base with a set of high-strength bolts. The walking components include wheel sets, motors, reducers, differentials and guide wheels. The walking components are linked and respond in conjunction with the local control cabinet. Step 2: Hoist the automated walking system to the top of the aqueduct and deploy it across the aqueduct; Step 3: Install the precision sprinkler system on the base of the automatic walking system: The precision sprinkler system includes a water storage tank, a sprinkler pump and a solenoid valve connected to the base by another set of high-strength bolts, as well as a main sprinkler pipe and a branch sprinkler pipe. The water storage tank and the sprinkler pump are linked and respond in conjunction with the local control cabinet. Step 4: Install the battery for the power supply and manual control system on top of the base. The power supply and manual control system also includes a wireless remote control terminal. Step 5: Install the ambient temperature monitoring system on the inner wall of the aqueduct. The ambient temperature monitoring system and the local control cabinet are pre-programmed with linkage rules. Step six: Automatic curing system is used to automatically cure the concrete of the aqueduct body.

[0007] Preferably, in step one, the base is a universal base welded from channel steel, and the hole spacing of each set of mounting holes on the base is 50mm / stage; two sets of wheel sets are symmetrically installed at the bottom of the base along the width direction of the base, each wheel set including a rotating shaft and two rollers, the rollers being wide rubber wheels; the motor is installed in the middle of the base, close to one set of wheel sets; the input end of the reducer is connected to the motor, and the output end is connected to the differential; the differential is connected to the rotating shaft of the set of wheel sets close to the motor, and is located in the middle of the base; two sets of guide wheel sets, each consisting of two guide wheels, are symmetrically installed at both ends of the base, or installed close to both ends of the base, each guide wheel being detachably installed at the bottom of the base via a guide support; the local control cabinet is installed on the top of the base, close to one end of the base, the local control cabinet being a PLC controller.

[0008] Preferably, in step two, the two rollers in each set of wheels are respectively located on the top of the caps on both sides of the aqueduct, and the two sets of guide wheels are respectively located on the sides of the caps on both sides of the aqueduct that are far apart from each other.

[0009] Preferably, in step three, a water storage tank is installed on top of the base and located in the middle of the base. Reinforcing ribs are provided on the outside of the water storage tank, and a liquid level sensor is installed inside the water storage tank. The liquid level sensor is linked to the local control cabinet. A water inlet is provided on the top of the water storage tank, and a filter screen is provided at the water inlet. A water outlet is provided at the bottom of the water storage tank. The water outlet is quickly connected to the water inlet of the main sprinkler pipe, and a rubber sealing ring is provided at the interface. A sprinkler pump and a solenoid valve are installed on top of the base and located on the side of the water storage tank away from the local control cabinet. They are arranged sequentially on the main sprinkler pipe. The sprinkler pump and the solenoid valve are linked through the local control cabinet to form a pressure regulating component.

[0010] Preferably, in step three, the spray branch pipe includes a horizontal spray branch pipe and a vertical spray branch pipe. The horizontal spray branch pipe is laid horizontally on the outside of the base. The water outlet end of the main spray pipe is connected to the horizontal spray branch pipe. An upper nozzle is provided at each end near the horizontal spray branch pipe. The two upper nozzles are located on both sides of the upper eaves of the aqueduct. The upper nozzles are rotary copper nozzles. The two vertical spray branch pipes are respectively installed at both ends of the horizontal spray branch pipe and located on both sides of the aqueduct body. Multiple side nozzles are arranged at intervals on the vertical spray branch pipe. The side nozzles on the upper layer of the vertical spray branch pipe are stainless steel atomizing nozzles, and the side nozzles on the lower layer of the vertical spray branch pipe are low-angle direct spray nozzles.

[0011] Preferably, in step four, the battery is installed on the top of the base using a fixed bracket and is positioned close to the local control cabinet. The battery is modularly integrated with the power sensor and the intelligent charger. When the power level is ≤20%, the local control cabinet is triggered to issue an audible and visual alarm. Both the wireless remote control terminal and the local control cabinet are equipped with an emergency braking button.

[0012] Preferably, in step five, the ambient temperature monitoring system uses a temperature sensor, and direct sunlight should be avoided during installation to prevent it from affecting the measurement accuracy. The ambient temperature monitoring system transmits data to the local control cabinet through a shielded cable.

[0013] Preferably, in step six, the local control cabinet controls and starts the motor, and with the cooperation of the reducer, the automatic walking system moves at a constant speed of 2km / s. When moving through the curved groove, the differential automatically distributes the speed of the rollers on both sides to avoid roller slippage. During the movement, the guide wheel constrains the trajectory in real time according to the outer contour of the groove.

[0014] Preferably, in step six, the local control cabinet controls the spraying frequency and duration of the precision spraying system on the concrete. When the temperature is >25℃, the spraying frequency is increased to 1.2 hours / time, and the spraying duration of the side nozzles at the bottom of the vertical spraying branch pipe is increased to 3 minutes / time; when the temperature is 15℃≤25℃, spraying is maintained at 2 hours / time, and the spraying duration of the side nozzles at the bottom of the vertical spraying branch pipe is 2 minutes / time; when the temperature is <15℃, the spraying frequency is reduced to 2.8 hours / time, and the spraying duration of the side nozzles at the bottom of the vertical spraying branch pipe is reduced to 1.5 minutes / time; when the temperature is <5℃ in winter, a heat preservation warning is triggered; the temperature monitoring accuracy is ±0.5℃, the spraying frequency adjustment error is ≤5%, and the surface humidity of the concrete is ≥90% within seven days.

[0015] Preferably, in step six, during spraying, the upper nozzles on the horizontal spray branch pipes cover the inner wall of the tank and the top corner area, the side nozzles (74) located on the upper layer of the vertical spray branch pipes cover the upper part of the outer wall, and the side nozzles located on the lower layer of the vertical spray branch pipes cover the lower part of the outer wall and the bottom area of ​​the tank. By spraying crosswise through the side nozzles on the lower layers of the two vertical spray branch pipes, the bottom area of ​​the tank is fully covered, there are no blind spots in the spraying, and the spraying uniformity is ≥95%.

[0016] In summary, by adopting the above technical solution, the present invention has at least the following beneficial effects: 1. The automatic curing method for the concrete body of tall, thin-walled aqueducts not only adapts to different aqueduct cross-sections but also achieves intelligent curing control. It eliminates operational safety hazards while improving curing coverage. By optimizing the base structure and the connection method of core components, it enables flexible adaptation to multiple aqueduct cross-sections, solving the limitation of traditional equipment that only adapts to a single cross-section. It achieves efficient and universal curing under wide cross-sections. By constructing a system of "timed curing + temperature linkage + manual emergency response", it replaces manual experience with quantitative data, promoting the transformation of maintenance management from "experience-driven" to "data-driven". 2. High adaptability: The I10 channel steel base with bolt connection design allows for adjustment of the spacing between rollers, motors, and guide wheels, adapting to different aqueduct cross sections. This eliminates the need for customizing multiple sets of equipment, increasing equipment reuse rate by 70%. The battery pack is small in size and lightweight, adapting to different cross-section base installation spaces, significantly improving the flexibility of operation in complex terrain. 3. Safe and Reliable: The entire maintenance process requires no manual high-altitude work, eliminating the risk of falls during manual climbing in high-altitude and complex terrain conditions, and removing safety hazards in high-risk areas. The I10 channel steel base boasts high strength and stability, coupled with wide rubber wheels and adjustable guide wheels for anti-slip and load-bearing capacity. The equipment's trajectory deviation during movement is ≤±3cm, eliminating the risk of tipping over and ensuring stable operation even in curved channels. Motor protection adapts to humid environments. The battery features triple protection against overcharge, over-discharge, and overcurrent, with emergency braking stopping the machine within eight seconds to prevent battery damage and potential accidents. The battery pack uses a modular integrated design, facilitating easy installation and disassembly without relying on external cables, eliminating the risks of dragging and electric shock. The equipment failure rate is <0.5%, solving the problem of external power supply in complex terrain, and its offline operation capability covers all aqueduct scenarios. 4. High efficiency and energy saving: A single unit can replace multiple workers, reducing labor costs; the variable frequency spray pump, combined with a temperature sensor, controls the water volume, saving up to 40% of water compared to traditional manual spraying maintenance; the battery supports 10-12 hours of offline operation, reducing reliance on external cables and power loss; the I10 channel steel body balances stability and lightweight, reducing motor load and further achieving energy saving. 5. Precise and controllable: Through differentiated angle and range design, the spray uniformity is ≥95%, covering all parts of the tank, including the outer wall, inner wall, and bottom; temperature monitoring accuracy is ±0.5℃, spray frequency control error is ≤5%, ensuring that the surface humidity of the concrete is ≥90% within seven days; battery power monitoring accuracy is ±2%, with automatic low power warning and power adjustment, visualized power supply status, and 100% curing compliance rate, solving the problem of blind spots in manual curing and inhibiting concrete shrinkage cracks; 6. The DC motor drive, combined with the differential, optimizes the power distribution for different cross sections and curved grooves, improving walking stability by 60% compared to the traditional single motor, with a trajectory deviation of ≤±3cm and a walking speed of up to 2km / h, which greatly improves maintenance efficiency. At the same time, the DC motor has a low starting current, avoiding instantaneous battery overload. 7. Based on the multi-component linkage logic of the local control cabinet, the spray pump, temperature sensor, battery, and power sensor are integrated into the same control system. Temperature data is used to adjust the spray frequency and duration in real time, and power data is used to dynamically adjust the motor power, thus solving the dual problems of "temperature fluctuation + insufficient power" at the same time. This improves maintenance accuracy by 20% and power supply stability by 30%. 8. Dual protection of "local control + manual emergency" with both wireless remote control and local panel operation, combined with the battery's offline emergency capability; when the automatic system fails, it can be manually switched to a low-power mode, solving the response problem of sudden failures in the automated system (such as water pump shutdown, sensor failure), and improving the reliability of the maintenance process to 99.8%; 9. The integrated design of "DC motor + battery + intelligent charging and discharging" allows all electrical components (motor, local control cabinet, sensor, solenoid valve, etc.) to be directly adapted to 24V DC power supply without the need for voltage conversion devices, thus reducing power loss (conversion loss ≤5%). Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an automatic maintenance system as an exemplary embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the automatic maintenance system from another perspective, which is an exemplary embodiment of the present invention.

[0019] Figure 3 A process flow diagram of an automatic curing method for the concrete body of a tall, thin-walled aqueduct, which is an exemplary embodiment of the present invention.

[0020] The diagram is labeled as follows: 1-Base, 101-Horizontal side rib, 102-Longitudinal side rib, 103-Longitudinal reinforcing rib, 104-Horizontal reinforcing rib, 2-Walking component, 21-Wheel set, 211-Rotating shaft, 212-Roller, 22-Motor, 23-Reducer, 24-Differential, 25-Guide wheel, 26-Guide support, 3-Local control cabinet, 4-Water storage tank, 5-Sprinkler pump, 6-Sprinkler main pipe, 7-Sprinkler branch pipe, 71-Horizontal sprinkler branch pipe, 72-Vertical sprinkler branch pipe, 73-Upper nozzle, 74-Side nozzle, 8-Solenoid valve, 9-Battery, 10-Tank cap. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so that the objectives, technical solutions, and advantages of the present invention will be clearer. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0022] In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. Example

[0023] This embodiment illustrates an automated curing method for the concrete of a tall, thin-walled aqueduct. The method employs an automated curing system to achieve automatic curing of the aqueduct's concrete. (Refer to...) Figure 1 and Figure 2 The automatic maintenance system includes an automatic walking system, a precision spraying system, an ambient temperature monitoring system, and a power supply and manual control system. (See reference...) Figure 3 The automatic curing method for the concrete body of tall, thin-walled aqueducts includes the following steps: Step 1: Complete the assembly of the automatic walking system: Fabricate a base 1 with multiple sets of mounting holes. According to the cross-sectional width of the aqueduct, the walking component 2 and the local control cabinet 3 are detachably mounted on the base 1 using a set of high-strength bolts. The walking component 2 and the local control cabinet 3 are linked and respond in a coordinated manner. The high-strength bolts are bolts with a tensile strength greater than 8.8 grade, such as grade 12.9, and the nominal diameter of the high-strength bolts is 16mm. Manufacturing Base 1: Base 1 is a universal base (adaptable to different aqueduct cross-sections). Base 1 is formed by welding channel steel (e.g., using I10 channel steel with a web height of 10mm, a leg width of 48mm, and a web thickness of 5.3mm; the channel steel surface is hot-dip galvanized for corrosion protection, with a zinc layer thickness ≥85μm). Base 1 includes transverse side ribs 101, longitudinal side ribs 102, longitudinal reinforcing ribs 103, and a transverse reinforcing rib assembly composed of transverse reinforcing ribs 104. Multiple sets of mounting holes are opened along the length direction of the transverse side ribs 101, longitudinal side ribs 102, transverse reinforcing ribs 104, and longitudinal reinforcing ribs 103 (the hole spacing of each set of mounting holes is 50mm / stage). Two transverse side ribs 101 and two longitudinal side ribs 102 are connected end to end to form a rectangular frame, making the transverse side ribs 101 and 102 connected end to end to form a rectangular frame. The slots of the side ribs 101 and the longitudinal side ribs 102 face the inside of the rectangular frame; multiple longitudinal reinforcing ribs 103 are installed side by side between the two longitudinal side ribs 102, so that the two ends of the longitudinal reinforcing ribs 103 are respectively connected to the two transverse side ribs 101; multiple sets of transverse reinforcing rib assemblies are installed side by side between the two transverse side ribs 101, each set of transverse reinforcing rib assemblies is composed of multiple coaxial transverse reinforcing ribs 104; when the transverse reinforcing ribs 104 are located between the longitudinal side ribs 102 and the longitudinal reinforcing ribs 103, the two ends of the transverse reinforcing ribs 104 are respectively connected to the longitudinal side ribs 102 and the longitudinal reinforcing ribs 103; when the transverse reinforcing ribs 104 are located between the two longitudinal reinforcing ribs 103, the two ends of the transverse reinforcing ribs 104 are respectively connected to the two longitudinal reinforcing ribs 103. The walking component 2 includes a wheel set 21, a motor 22, a reducer 23, a differential 24, and a guide wheel 25. Two sets of wheel sets 21 are symmetrically installed at the bottom of the base 1 along its width. Each set of wheel sets 21 is detachably connected to the base 1 by a first high-strength bolt. Each set of wheel sets 21 includes a rotating shaft 211 and two rollers 212 mounted on the rotating shaft 211. The rollers 212 are wide rubber wheels. The motor 22 is detachably connected to the base 1 by a second high-strength bolt and is located in the middle of the base 1, close to one set of wheel sets 21. The motor 22 provides power for the wheel sets to move. The motor 22 is a 3.0kW brushless DC motor with a rated speed of 3000 r / min, an output torque ≥42 N·m, and an IP67 protection rating. The input end of the reducer 23 is connected to the motor 22 and detachably connected to the base 1 by a third high-strength bolt. The reducer 23 is a PLS-120 planetary reducer with a reduction ratio of 1:25 and a transmission efficiency ≥96%. The reducer 23 is used to reduce the walking speed to 2km / h to achieve uniform walking of the automatic walking system; the differential 24 is connected to the output end of the reducer 23 and is detachably connected to the base 1 by the fourth high-strength bolt. The differential 24 is also connected to the rotating shaft 211 of a set of wheel sets 21 near the motor 22 and is located in the middle of the base 1. The rotating shaft 211 adopts a two-section design. The differential 24 is used for power distribution in the bending section. The differential 24 adopts a CS-150 differential with a transmission ratio of 1:15; the guide wheel 25 adopts a "groove body contour fitting" design. Two guide wheels 25 form a set of guide wheels. The two sets of guide wheels are symmetrically installed at both ends of the base 1 or near both ends of the base 1. Each guide wheel 25 is installed at the bottom of the base 1 by a guide support 26. The guide support 26 is detachably connected to the base 1 by the fifth high-strength bolt, and the installation angle can be adjusted by the fifth high-strength bolt. The local control cabinet 3 is installed on top of the base 1, near one end of the base 1. The local control cabinet 3 and the base 1 are detachably connected by a sixth high-strength bolt. The dimensions of the local control cabinet 3 are 800mm long * 600mm wide * 400mm high, and the protection level is IP54. The local control cabinet 3 uses a PLC controller (such as a PLC controller of model S7-200SMART, with analog input accuracy of ±0.5%). The local control cabinet 3 presets a basic path and combines the real-time correction signal of the guide wheel 25 to support continuous switching of multiple aqueducts. The local control cabinet 3 is equipped with a motor speed-battery power linkage logic. When the power is ≤20%, the walking speed is automatically reduced to 1.5km / h, extending the battery life to 12 hours. Step 2: Hoist the automatic walking system to the top of the aqueduct and lay it across the aqueduct; so that the two rollers 212 in each set of wheel groups 21 are located on the top of the caps 10 on both sides of the aqueduct, and the two sets of guide wheel groups are located on the side of the caps 10 on both sides of the aqueduct that are far apart from each other. Step 3: Install the precision sprinkler system on the base 1 of the automatic walking system: The precision sprinkler system includes a water storage tank 4, a sprinkler pump 5 and a solenoid valve 8 connected to the base 1 by another set of high-strength bolts, as well as a sprinkler main pipe 6 and a sprinkler branch pipe 7. The water storage tank 4 and the sprinkler pump 5 are linked and respond in conjunction with the local control cabinet 3. The water storage tank 4 is detachably mounted on top of the base 1 using a seventh high-strength bolt, and is located in the middle of the base 1. The water storage tank 4 is made of polyethylene (PE) plastic (dimensions: 1500×1350×800mm, volume: 800L, wall thickness: 10mm, pressure resistance: 0.6MPa). Reinforcing ribs are arranged on the outside of the water storage tank 4 at 250mm intervals, and are made of 4mm thick aluminum alloy. A liquid level sensor (model LS-80, range: 0-800L, accuracy: ±1%) is installed inside the water storage tank 4. The liquid level sensor is linked to the local control cabinet 3. When the liquid level is low (≤80L), the local control cabinet 3 is triggered to issue an audible and visual alarm. The water storage tank 4 has a water inlet at the top with a filter screen. The diameter of the water inlet is 65mm. The water storage tank 4 has a water outlet at the bottom with a diameter of 40mm. The water outlet can be quickly connected to the water inlet of the sprinkler main pipe 6. A rubber sealing ring is provided at the interface between the water outlet and the sprinkler main pipe 6 to prevent water leakage. The rubber sealing ring is made of O-40 EPDM rubber. The spray pump 5 and solenoid valve 8 are detachably mounted on the top of the base 1 using the eighth and ninth high-strength bolts, respectively, and are located on the side of the water storage tank 4 away from the local control cabinet 3. The spray pump 5 and solenoid valve 8 are linked through the local control cabinet 3 to form a pressure regulating component. The spray pump 5 and solenoid valve 8 are installed on the main spray pipe 6, with the spray pump 5 near the inlet end of the main spray pipe 6 and the solenoid valve 8 near the outlet end of the main spray pipe 6. The spray pump 5 is used to regulate the pressure of the water flowing out of the water storage tank 4. The spray pump 5 is a 1.2kW variable frequency centrifugal pump (model DCF-2412, 24V DC, rated flow 15m³ / h, rated head 30m, speed 2800r / min, protection level IP55). The solenoid valve 8 (model 2W-320-32, working pressure 0.1-1.0MPa, response time ≤0.1s) is used to regulate the total spray volume. The main sprinkler pipe 6 and the branch sprinkler pipes 7 are made of 40mm diameter UPVC water pipes and are connected with stainless steel snap-fit ​​pipe clamps to enhance durability and ease of installation. The branch sprinkler pipes 7 include a horizontal branch sprinkler pipe 71 and a vertical branch sprinkler pipe 72. The horizontal branch sprinkler pipe 71 is horizontally arranged on one of the horizontal side ribs 101 of the base 1 and located on the outside of the base 1. The outlet end of the main sprinkler pipe 6 is connected to the horizontal branch sprinkler pipe 71. An upper nozzle 73 is provided at each end near the horizontal branch sprinkler pipe 71. The two upper nozzles 73 are located on both sides of the upper edge of the aqueduct (about 20cm from the opening). The upper nozzles 73 are rotary copper nozzles (spraying angle 150°, water pressure 0.25-0.35MPa, spray range 2.5-3.5m, flow rate 1.5m³ / h). Vertical spray branch pipes 72 are installed at both ends of horizontal spray branch pipes 71 and located on both sides of the aqueduct body, so that the first end of the vertical spray branch pipe 72 is connected to the horizontal spray branch pipe 71, and the second end of the vertical spray branch pipe 72 extends away from the bottom of the base 1. The first end and the second end of the vertical spray branch pipe 72 are opposite to each other. Multiple side nozzles 74 are arranged at intervals on the vertical spray branch pipe 72. The side nozzles 74 located on the upper layer of the vertical spray branch pipe 72 are stainless steel atomizing nozzles (droplet diameter 50-100μm, water pressure 0.2-0.3MPa, spray range 1.8-2.5m, flow rate 0.9m³ / h), and the side nozzles 74 located on the lower layer of the vertical spray branch pipe 72 are low-angle direct spray nozzles (spray angle 30°, water pressure 0.3-0.4MPa, spray range 1.5-2.2m, flow rate 1.2m³ / h). Step four: Install the battery 9 of the power supply and manual control system on top of the base 1. The power supply and manual control system also includes a wireless remote control terminal. The battery 9 supplies power to the motor 22, local control cabinet 3, sensors, solenoid valve 8, and other electrical components. The battery 9 is installed on top of the base 1 using a fixed bracket, positioned close to the local control cabinet 3. The fixed bracket is detachably connected to the base 1 using a tenth high-strength bolt. The fixed bracket is shockproof and waterproof. The battery 9 uses two sets of 24V / 200Ah lead-acid battery packs (model 6-EVF-200, rated capacity 200Ah, 522×240×220mm). The battery 9 is modularly integrated with the power sensor and intelligent charger. The power sensor (accuracy ±2%) is used to transmit power data to the local control cabinet 3 in real time. Low power (power ≤20%)... When the battery 9 is triggered, the local control cabinet 3 will issue an audible and visual alarm. The intelligent charger (using the CF-2420 intelligent charger with an input of 220VAC and an output of 24VDC / 20A) has overcharge, over-discharge, and overcurrent protection, enabling the battery 9 to support the equipment to operate offline for a long time (10-12 hours), meeting the daily maintenance needs of the aqueduct and adapting to the operation scenario of traversing the mountainous terrain of the aqueduct without external power supply. The control distance of the wireless remote control terminal is ≤80m, and the button response time is ≤0.3 seconds. The wireless remote control terminal supports one-button start / stop, walking, spraying, emergency braking and other functions, and can be manually controlled to deal with sudden failure needs. Both the wireless remote control terminal and the local control cabinet 3 are equipped with an emergency braking button, which can stop the machine within eight seconds in case of an emergency. When the temperature is <5℃ in winter, the local control cabinet 3 will automatically trigger a heat preservation warning and close the water tank valve to prevent the pipeline from freezing and breaking. Step 5: Install the ambient temperature monitoring system on the inner wall of the aqueduct. The ambient temperature monitoring system and the local control cabinet 3 are pre-programmed with linkage rules. The ambient temperature monitoring system uses a temperature sensor (such as a DS18B20 high-precision temperature sensor, with a measurement range of -55-125℃, accuracy of ±0.5℃ (-10-85℃), and resolution of 0.0625℃). The ambient temperature monitoring system is used to capture the surrounding ambient temperature in real time. During installation, direct sunlight should be avoided to prevent it from affecting the measurement accuracy. The ambient temperature monitoring system transmits data to the local control cabinet 3 through a shielded cable. The shielded cable is an RVV2×0.75mm² shielded cable with a transmission delay of <1 second. Step Six: The concrete of the aqueduct is automatically cured using an automatic curing system. The local control cabinet 3 controls and starts the motor 22, which, with the cooperation of the reducer 23, allows the automatic walking system to travel at a constant speed of 2 km / s. When traveling on the curved aqueduct, the differential 24 automatically distributes the speed of the rollers 212 on both sides to prevent the rollers 212 from slipping. During travel, the guide wheel 25 constrains the trajectory in real time according to the outer contour of the aqueduct, ensuring accurate following even on curved aqueducts. The ambient temperature monitoring system transmits the real-time ambient temperature data captured by the system to the local control cabinet 3 via a shielded cable. Based on the preset linkage rules between the ambient temperature monitoring system and the local control cabinet 3, the local control cabinet 3 controls the frequency and duration of the precision spraying system on the concrete. When the temperature is >25℃, the spraying frequency is increased by 40% (from 2 hours / time to 1.2 hours / time), and the spraying time of the side nozzles 74 under the vertical spraying branch pipe 72 is increased to 3 minutes / time to prevent the water temperature in the water storage tank 4 from becoming too high. High impact on maintenance effectiveness; when the temperature is between 15℃ and 25℃, maintain spraying every 2 hours, with the side sprinklers 74 on the lower layer of the vertical spray branch pipe 72 spraying for 2 minutes per spray; when the temperature is below 15℃, reduce the spraying frequency by 40% (from 2 hours per spray to 2.8 hours per spray), and reduce the spraying time of the side sprinklers 74 on the lower layer of the vertical spray branch pipe 72 to 1.5 minutes per spray; in winter, when the temperature is below 5℃, trigger a heat preservation warning, with a temperature monitoring accuracy of ±0.5℃ and a spraying frequency control error of ≤5%. Ensure that the surface humidity of the concrete is ≥90% within seven days; during spraying, the upper nozzle 73 on the horizontal spray branch pipe 71 can cover the inner wall of the tank and the top corner area, the side nozzle 74 located on the upper layer of the vertical spray branch pipe 72 can cover the upper part of the outer wall, and the side nozzle 74 located on the lower layer of the vertical spray branch pipe 72 can cover the lower part of the outer wall and the bottom area of ​​the tank. Through the cross spraying of the side nozzles 74 on the lower layer of the two vertical spray branch pipes 72, the entire area of ​​the bottom of the tank is covered, there are no blind spots in the spraying, and the spraying uniformity is ≥95%.

[0024] The above description is merely a detailed illustration of specific embodiments of the present invention and is not intended to limit the invention. Various substitutions, modifications, and improvements made by those skilled in the art without departing from the principles and scope of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic curing method for high and large thin-walled aqueduct body concrete, which realizes automatic curing of aqueduct body concrete by using an automatic curing system, characterized in that, It comprises the following steps: Step one, complete the assembly of the automatic walking system: make the base (1) with multiple sets of mounting holes, according to the width of the aqueduct cross section, the walking part (2) and the local control cabinet (3) are respectively installed on the base (1) through a set of high-strength bolts, the walking part (2) includes wheel set (21), motor (22), reducer (23), differential (24) and guide wheel (25), the walking part (2) and the local control cabinet (3) are linked and responded; Step two, hoist the automatic walking system to the top of the aqueduct and lay across the aqueduct; Step three, install the precision spraying system on the base (1) of the automatic walking system: the precision spraying system includes a water storage tank (4), a spraying water pump (5) and an electromagnetic valve (8) connected to the base (1) through another set of high-strength bolts, and a spraying main pipe (6) and a spraying branch pipe (7), the water storage tank (4) and the spraying water pump (5) are linked and responded with the local control cabinet (3); Step four, install the battery (9) of the power supply and manual control system on the top of the base (1), the power supply and manual control system also includes a wireless remote control terminal; Step five, install the environmental temperature monitoring system in the inner wall of the aqueduct body, the environmental temperature monitoring system and the local control cabinet (3) are pre-set with linkage rules; Step six, automatically maintain the aqueduct body concrete by the automatic maintenance system.

2. The automatic curing method for the high and large thin-wall aqueduct body concrete according to claim 1, characterized in that, In step one, the base (1) is a universal base formed by welding channel steel, the hole distance of each set of mounting holes on the base (1) is 50mm / grade; two sets of wheel sets (21) are symmetrically installed at the bottom of the base (1) along the width direction of the base (1), the wheel set (21) includes a rotating shaft (211) and two rollers (212), the roller (212) adopts a wide rubber wheel; the motor (22) is installed in the middle of the base (1) and close to a set of wheel sets (21); the input end of the reducer (23) is connected with the motor (22), and the output end is connected with the differential (24); the differential (24) is connected with the rotating shaft (211) of a set of wheel sets (21) close to the motor (22) and located in the middle of the base (1); two sets of guide wheel sets composed of two guide wheels (25) are symmetrically installed at both ends of the base (1), or close to both ends of the base (1), each guide wheel (25) is detachably installed at the bottom of the base (1) through a guide support (26); the local control cabinet (3) is installed at the top of the base (1) and close to one end of the base (1), the local control cabinet (3) adopts a PLC controller.

3. The automatic curing method for the concrete of the high and large thin-wall aqueduct body according to claim 2, characterized in that, In step two, the two rollers (212) in each set of wheel sets (21) are respectively located at the top of the aqueduct cap (10) on both sides of the aqueduct, and the two sets of guide wheel sets are respectively located on the side away from each other of the aqueduct cap (10) on both sides of the aqueduct.

4. The automatic curing method for the concrete of the high and large thin-wall aqueduct body according to claim 2, characterized in that, In step three, the water storage tank (4) is installed on the top of the base (1) and located in the middle of the base (1), the outer side of the water storage tank (4) is provided with a reinforcing rib, the inner side of the water storage tank (4) is provided with a liquid level sensor, the liquid level sensor is linked with the local control cabinet (3) and responds; the top of the water storage tank (4) is provided with a water inlet, the water inlet is provided with a filter screen, the bottom of the water storage tank (4) is provided with a water outlet, the water outlet is quickly connected with the water inlet end of the spray main pipe (6), and a rubber sealing ring is arranged at the interface; the spray water pump (5) and the electromagnetic valve (8) are installed on the top of the base (1) and located on the side away from the local control cabinet (3) of the water storage tank (4), and are sequentially arranged on the pipeline of the spray main pipe (6), the spray water pump (5) and the electromagnetic valve (8) are linked through the local control cabinet (3) to form a pressure regulating assembly.

5. The automatic curing method for the concrete of the high and large thin-wall aqueduct body according to claim 4, characterized in that, In step three, the spray branch pipe (7) includes a horizontal spray branch pipe (71) and a vertical spray branch pipe (72), the horizontal spray branch pipe (71) is horizontally arranged on the outer side of the base (1), the water outlet end of the spray main pipe (6) is connected with the horizontal spray branch pipe (71), one upper nozzle (73) is arranged near each end of the horizontal spray branch pipe (71), and the two upper nozzles (73) are located on the two side edges of the upper eaves of the aqueduct; the upper nozzle (73) is a rotary copper nozzle; two vertical spray branch pipes (72) are respectively installed at the two ends of the horizontal spray branch pipe (71) and located on the two sides of the aqueduct body; a plurality of side nozzles (74) are arranged on the vertical spray branch pipe (72) at intervals; the side nozzles (74) on the upper layer of the vertical spray branch pipe (72) are stainless steel atomizing nozzles; the side nozzles (74) on the lower layer of the vertical spray branch pipe (72) are low-angle direct nozzles.

6. The automatic curing method for high and large thin-walled aqueduct body concrete according to claim 2, characterized in that, In step four, the storage battery (9) is installed on the top of the base (1) through a fixing support and close to the local control cabinet (3), the storage battery (9) is modularly integrated with the electric quantity sensor and the intelligent charger, and when the electric quantity is less than or equal to 20%, the local control cabinet (3) triggers an audible and visual alarm; the wireless remote control terminal and the local control cabinet (3) are each provided with an emergency stop button.

7. The automatic curing method for high and large thin-wall aqueduct body concrete according to claim 2, characterized in that, In step five, the environmental temperature monitoring system adopts a temperature sensor, and the installation avoids the influence of direct sunlight on the measurement accuracy; the environmental temperature monitoring system transmits data to the local control cabinet (3) through a shielding wire.

8. The automatic curing method for high and large thin-wall aqueduct body concrete according to claim 3, characterized in that, In step six, the local control cabinet (3) controls and starts the motor (22), cooperates with the reducer (23), and makes the automatic walking system walk at a uniform speed of 2km / s; when the automatic walking system walks in the curved groove body, the differential mechanism (24) automatically distributes the rotating speeds of the two side rollers (212) to avoid the slipping of the roller (212); when the automatic walking system walks, the guide wheel (25) real-time constraints the trajectory according to the contour of the outer side of the groove body.

9. The automatic curing method for high and large thin-wall aqueduct body concrete according to claim 5, characterized in that, In step six, the local control cabinet (3) controls the spraying frequency and duration of the precision spraying system on the concrete. When the temperature is greater than 25℃, the spraying frequency is increased to 1.2 hours / time, and the spraying duration of the side nozzle (74) in the lower layer of the vertical spraying branch pipe (72) is increased to 3 minutes / time. When the temperature is between 15℃ and 25℃, the spraying frequency is maintained at 2 hours / time, and the spraying duration of the side nozzle (74) in the lower layer of the vertical spraying branch pipe (72) is 2 minutes / time. When the temperature is less than 15℃, the spraying frequency is reduced to 2.8 hours / time, and the spraying duration of the side nozzle (74) in the lower layer of the vertical spraying branch pipe (72) is reduced to 1.5 minutes / time. When the temperature is less than 5℃ in winter, the heat preservation warning is triggered. The temperature monitoring accuracy is ±0.5℃, the spraying frequency regulation error is less than or equal to 5%, and the surface humidity of the concrete is greater than or equal to 90% within seven days.

10. The automatic curing method for high and large thin-wall aqueduct body concrete according to claim 5, characterized in that, In step six, when spraying, the upper nozzle (73) on the horizontal spraying branch pipe (71) covers the inner wall and top corner area of the tank, the side nozzle (74) in the upper layer of the vertical spraying branch pipe (72) covers the upper part of the outer wall, the side nozzle (74) in the lower layer of the vertical spraying branch pipe (72) covers the lower part of the outer wall and the tank bottom area, and the two side nozzles (74) in the lower layer of the vertical spraying branch pipe (72) are cross-sprayed to realize full-area coverage of the tank bottom, with no blind area and uniformity of spraying greater than or equal to 95%.

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