Construction site watering maintenance device

Abstract

The invention discloses a construction site watering maintenance device, which relates to the technical field of concrete maintenance, and comprises a fire joint, the bottom end of the fire joint is provided with a galvanized four-way pipe fitting, and the end part of the galvanized four-way pipe fitting is provided with a switch ball valve. The device is simple in structure and good in portability, a normal-pressure flexible conduit penetrates through the whole maintenance area, a rotary spray head is arranged in the middle of the normal-pressure flexible conduit to conduct water spraying maintenance, and a temperature and humidity control system is arranged at the position, connected with a water source, of a water pipe to monitor the temperature and humidity conditions of a working area. Materials of the device comprise a fire-fighting connector, a galvanized four-way pipe fitting, a galvanized short section, a switch ball valve, a rotary sitting type spray head, a normal-pressure flexible conduit, a timer and a temperature and humidity detector, the used materials are simple, the cost is low, a temperature and humidity detection system is arranged, automatic stopping is achieved after the fixed temperature and humidity are achieved, the maintenance humidity can be accurately controlled, and the maintenance efficiency is improved. The timer is used for setting the maintenance time, water spraying maintenance work is carried out at the fixed time, and manual maintenance operation is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of concrete curing, in particular to a construction site water sprinkling curing device. Background Art

[0002] A construction site refers to a place where construction activities are carried out, usually including various types of construction sites, road construction sites, bridge construction sites, water conservancy project construction sites, etc. In this environment, there will be a large number of construction personnel, machinery and equipment, building materials and various construction technical activities. Watering concrete maintenance at the construction site is a vital part of the construction site. It helps the concrete maintain a suitable humidity during the hardening process and prevents cracks and strength loss due to water evaporation. After the concrete is poured, cement reacts chemically with water to generate heat, which increases the temperature inside the concrete. If watering maintenance is not carried out in time, the moisture inside the concrete will evaporate rapidly, resulting in a weakening of the bonding force between the cement particles, thereby reducing the strength and durability of the concrete. Watering maintenance can also prevent the formation of surface shrinkage cracks caused by the evaporation of moisture on the concrete surface, affecting the appearance quality of the concrete.

[0003] At present, the technical solutions of existing maintenance devices have the disadvantages of complex structure, imprecise humidity control, low maintenance efficiency, low degree of automation, and high material cost when in use. For example, the patent document with application number 202121361030.7 discloses a mobile concrete maintenance sprinkler device for construction sites. The above solution involves a variety of mechanical components, with high manufacturing and maintenance costs. The complex structure makes the operation inconvenient, increases the training cost and operation difficulty of construction personnel, and the above solution has deficiencies in humidity control, and cannot accurately adjust and maintain the humidity required for concrete. Many existing maintenance devices have a low degree of automation and require a lot of manual intervention, which not only increases construction costs and time, but also may cause human operating errors and affect the maintenance effect. Therefore, it is necessary to propose a construction site watering maintenance device to solve the problems in the prior art. Summary of the invention

[0004] The purpose of the present invention is to make up for the shortcomings of the prior art and provide a construction site watering and maintenance device. It has a simple structure and good portability. It consists of a normal pressure hose running through the entire maintenance area. A rotating nozzle is provided in the middle of the normal pressure hose for watering and maintenance. A temperature and humidity control system is provided at the water source where the water pipe is connected to monitor the temperature and humidity in the working area. The materials of the present invention include fire-fighting joints, galvanized four-way pipe fittings, galvanized short sections, switch ball valves, rotating seated nozzles, normal pressure hoses, timers, and temperature and humidity detectors. The materials used are simple and the cost is low. A temperature and humidity detection system is provided. It automatically stops after reaching a fixed temperature and humidity, and can accurately control the maintenance humidity. The timer is used to set the maintenance time, and watering and maintenance work is performed at fixed times without manual maintenance operations.

[0005] In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: a construction site water sprinkling maintenance device, comprising a fire-fighting joint, a galvanized four-way pipe fitting is arranged at the bottom end of the fire-fighting joint, a switch ball valve is installed at the end of the galvanized four-way pipe fitting, and the switch ball valve is installed and fixedly connected with a normal-pressure bellows at one end away from the galvanized four-way pipe fitting, and a group of rotating seated sprinklers are installed on the outer surface of the normal-pressure bellows, and the rotating seated sprinkler includes a connecting pipe, and two brackets are installed on the outer surface of the connecting pipe, and both ends of the connecting pipe are connected to the normal-pressure bellows through threaded joints, and a timer is installed on the outer surface of the normal-pressure bellows, and a temperature and humidity detection system is installed inside the timer.

[0006] Furthermore, a rotating seat is installed on the outer surface of the connecting pipe, a group of water pipes are fixedly connected to the outer surface of the rotating seat, and a group of water spray heads are fixedly connected to the outer surface of each water pipe.

[0007] Furthermore, the temperature and humidity detection system installed inside the timer includes:

[0008] A temperature and humidity detector is used to collect temperature and humidity data of the working area in real time. The temperature and humidity detector includes a temperature sensor and a humidity sensor. The temperature sensor can accurately sense the temperature change of the working area and convert it into an electrical signal. The humidity sensor can accurately sense the humidity change of the working area and convert it into an electrical signal.

[0009] A control module, used to receive the temperature and humidity data transmitted by the temperature and humidity detector, and compare it with the preset temperature and humidity target values, while comprehensively considering the spraying duration and interval duration parameters set on the timer;

[0010] The solenoid valve is used to control the on and off of the water flow according to the instructions of the control module. When the temperature and humidity have not reached the target values ​​and the spraying time has not ended, the solenoid valve opens to allow water to flow through for watering maintenance. When the temperature and humidity reach the target values ​​and the spraying time ends, the solenoid valve closes to stop the water flow.

[0011] Furthermore, the temperature and humidity detector includes a signal processing unit for processing the electrical signals converted by the temperature sensor and the humidity sensor and converting them into a transmittable standard signal form. The solenoid valve includes an electromagnetic drive unit for receiving instructions from the control module and driving the valve core of the solenoid valve to move, thereby realizing on-off control of the water flow.

[0012] Furthermore, the control module includes a data receiving unit, a data comparison unit and a logic judgment unit. The data receiving unit is used to receive the temperature and humidity data in the form of a standard signal transmitted by the temperature and humidity detector, and the data comparison unit is used to compare the received temperature and humidity data with the preset temperature and humidity target values.

[0013] Furthermore, the logic judgment unit is used to perform logic judgment according to the comparison result and the spraying duration and interval duration parameters set by the timer to determine whether the stop condition is reached. The logic judgment unit adopts a self-defined comprehensive judgment algorithm, and the specific formula is: Among them, J is the comprehensive judgment value, H is the current humidity value, and H t is the preset humidity target value, S is the current temperature value, S t is the preset temperature target value, T r is the weight coefficient related to humidity, T h is a weight coefficient related to temperature. When J ≥ 0 and the spraying time has not ended, it is determined that the stop condition has not been met. When J < 0 and the spraying time has ended, it is determined that the stop condition has been met.

[0014] Furthermore, the temperature and humidity detector converts the collected temperature and humidity data into a transmittable signal form and transmits it to the control module, and the signal transmission method uses a shielded cable to transmit the signal.

[0015] Furthermore, the control module can accurately determine whether to send opening and closing instructions to the solenoid valve based on the preset temperature and humidity target values ​​and the time parameters set by the timer. The judgment process includes: when the data comparison unit determines that the temperature and humidity data have not reached the preset temperature and humidity target values ​​and the logic judgment unit determines that the spraying time has not ended, the control module sends an opening instruction to the solenoid valve; when the data comparison unit determines that the temperature and humidity data have reached the preset temperature and humidity target values ​​and the logic judgment unit determines that the spraying time has ended, the control module sends a closing instruction to the solenoid valve.

[0016] Furthermore, the preset temperature and humidity target values ​​and the spraying duration and intermittent duration parameters on the timer are set by the user according to actual needs. The setting method includes setting through an operation interface set on the control module. The operation interface includes numeric keys and function keys. The user enters specific values ​​through the numeric keys and selects different parameter setting options through the function keys.

[0017] Compared with the prior art, the construction site watering maintenance device has the following beneficial effects:

[0018] 1. The present invention consists of a normal-pressure bellows that runs through the entire maintenance area, with a rotating nozzle in the middle. This simple structural design makes the device easy to install and operate. The portability of the device allows it to be flexibly moved and used in different construction areas, adapting to the changing environmental requirements of the construction site. The materials used in the present invention are simple and common, including fire-fighting joints, galvanized four-way pipe fittings, switch ball valves, rotating seated nozzles, normal-pressure bellows, timers, temperature and humidity detectors, etc. Compared with the existing complex maintenance devices and high-cost internal maintenance methods, the maintenance cost is greatly reduced.

[0019] 2. The present invention is provided with a temperature and humidity detection system, which can monitor the temperature and humidity conditions of the working area in real time. Through the control of the solenoid valve in the timer, watering is automatically stopped when a fixed temperature and humidity are reached, thereby realizing precise control of the curing humidity. Precise humidity control can effectively avoid quality problems of concrete due to insufficient or excessive humidity. The curing time is set by using a timer, so that the device can automatically perform watering and curing work according to the preset time and conditions without human intervention, thereby reducing labor costs and labor intensity, and avoiding the influence of human operating errors on the curing effect, thereby improving the curing efficiency and quality, and ensuring the consistency and stability of concrete curing.

[0020] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a construction site water sprinkling maintenance device;

[0023] Figure 2 It is a three-dimensional structural schematic diagram of a rotary seated sprinkler head in a construction site watering maintenance device;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of a timer in a water sprinkling maintenance device at a construction site;

[0025] Figure 4 The figure is a schematic diagram of the internal structure of a timer in a watering maintenance device at a construction site.

[0026] In the figure: 1. Fire-fighting joint; 2. Galvanized four-way pipe fitting; 3. Switch ball valve; 4. Normal pressure bellows; 5. Rotating seat sprinkler; 501. Connecting pipe; 502. Bracket; 503. Threaded joint; 504. Rotating seat; 505. Water pipe; 506. Sprinkler head; 6. Timer; 601. Temperature and humidity detector; 602. Control module; 603. Solenoid valve. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1

[0029] At a large-scale construction site, multiple buildings are undergoing concrete wall pouring construction. Since the construction site is large and the requirements for concrete curing quality are high, traditional curing devices are difficult to meet the needs. Therefore, a construction site watering curing device of the present invention is adopted.

[0030] First, the construction workers carefully check the specifications and quality of the fire connector 1 to ensure that it can be tightly connected to the water source interface at the construction site. After firmly connecting the fire connector 1 to the water source, they then install the galvanized four-way pipe fitting 2. When connecting the galvanized four-way pipe fitting 2 to the fire connector 1, use appropriate tools to ensure a tight connection.

[0031] Afterwards, connect the normal-pressure bellows 4 to the four-way pipe fitting, and install the switch ball valve 3 at the connection. During the connection process, care should be taken to avoid the bellows from being twisted or compressed to ensure that the water can flow smoothly. In the middle section of the normal-pressure bellows 4, install the rotating seated sprinkler 5 according to the design requirements. The installation of the rotating seated sprinkler 5 must ensure that it can rotate flexibly so that the sprinkler angle can be adjusted according to the room height and wall position.

[0032] Finally, install the timer 6 near the water source on the normal pressure bellows 4. The timer 6 should be debugged before installation to ensure that the solenoid valve 603 inside it can work normally and the timing function and temperature and humidity monitoring function are accurate. The installation position of the timer 6 should avoid water immersion and collision to ensure its service life and performance.

[0033] When setting the relevant parameters on the timer 6, the construction personnel take comprehensive considerations based on the type of concrete, the pouring thickness and the environmental conditions of the construction site (including temperature, humidity, wind speed, etc.).

[0034] As for the daily spraying time, considering that the initial maintenance of concrete is more critical, it is set to spray for 4 hours a day. These 4 hours of spraying time are evenly distributed in different time periods to ensure that the concrete can continue to be replenished with water throughout the day. For example, the 4 hours are divided into 2 hours in the morning and 2 hours in the afternoon, or a more flexible allocation can be made according to the construction progress and site conditions.

[0035] The interval is set to 6 hours, which allows the concrete a certain amount of time to absorb moisture after each spraying, while also avoiding problems such as water accumulation caused by excessively frequent watering.

[0036] For humidity control, the preset humidity target value is 80% (relative humidity), which is determined based on the optimal humidity range for concrete curing and the actual conditions at the construction site. The preset temperature target value is 25°C, taking into account that the hydration reaction of concrete is more suitable at this temperature, and under local climatic conditions, it can be maintained near this temperature through appropriate curing measures.

[0037] Based on past experience and multiple tests conducted at the construction site, the weighting factor T related to humidity was determined. r is 0.6, and the weight coefficient T related to temperature h The weight coefficients are determined to more reasonably consider the influence of humidity and temperature on concrete curing when comprehensively judging whether the temperature and humidity have reached the stopping conditions.

[0038] After completing the device connection and parameter setting, the construction personnel turned on the water source. At this time, the water flow under pressure first entered the galvanized four-way pipe fitting 2 through the fire joint 1. Since the switch ball valve 3 was in the open state, the water flow passed through the switch ball valve 3 smoothly and then entered the normal pressure bellows 4.

[0039] At the same time, the temperature and humidity detector 601 starts working. The temperature sensor and humidity sensor in the temperature and humidity detector 601 respectively sense the temperature and humidity of the working area in real time. The temperature sensor uses a high-precision thermistor, which can accurately sense slight changes in ambient temperature and convert them into corresponding electrical signals. The humidity sensor uses humidity-sensitive materials to convert changes in ambient humidity into electrical signals.

[0040] These electrical signals are transmitted to the signal processing unit of the temperature and humidity detector 601, which performs processing operations such as amplification and filtering on the electrical signals and converts them into a transmittable standard signal form so that they can be accurately transmitted to the control module 602 of the timer 6.

[0041] When the timer 6 starts the watering operation at the set time interval (i.e., once every 6 hours and each time lasts for 4 hours), the control module 602 inside the timer 6 sends an opening instruction to the solenoid valve 603. After the solenoid valve 603 receives the instruction, its electromagnetic drive unit drives the valve core to move, so that the solenoid valve 603 opens, and the water flows through the normal pressure bellows 4 to reach the middle section of the rotating seated sprinkler 5.

[0042] The rotating seated sprinkler 5 starts to rotate under the impact of the water flow, and sprays the water evenly. The construction personnel carefully adjust the nozzle angle of the rotating seated sprinkler 5 according to the room height and the wall position. For example, for a higher room, the nozzle angle is adjusted upward so that the water flow can be sprayed to a higher position on the wall; for a lower room, the nozzle angle is appropriately adjusted downward to ensure that the wall is completely sprayed. During the watering process, the temperature and humidity detector 601 continuously monitors the temperature and humidity data, and transmits the data to the control module 602 of the timer 6.

[0043] The data receiving unit in the control module 602 of the timer 6 continuously receives the temperature and humidity data in the form of a standard signal transmitted by the temperature and humidity detector 601, and the data comparison unit compares the received temperature and humidity data with the preset temperature and humidity target values. For example, at a certain moment, the current humidity value H is 75%, and the current temperature value S is 24°C. According to the self-defined comprehensive judgment algorithm formula: Since J=-3.4<0, and if the spraying time has not ended at this time, it is also determined that the stop condition has been met (in actual conditions, if the spraying time has not ended, it is determined that the stop condition has not been met when J≥0), the control module 602 sends a closing command to the solenoid valve 603. After the solenoid valve 603 receives the closing command, its electromagnetic drive unit drives the valve core to move, so that the solenoid valve 603 is closed and the water flow is stopped, thereby achieving precise control of the maintenance humidity and performing maintenance work according to the predetermined time plan.

[0044] In this embodiment, the maintenance device has a simple structure and is composed of a common fire-fighting joint 1, a galvanized four-way pipe fitting 2, etc. These components are easy to obtain and easy to install, which greatly reduces the construction difficulty. The material cost is low, about 350 yuan / 100 meters. Compared with traditional complex maintenance devices, it has significant cost advantages. This simple structure is easy to install and operate, reduces the training cost and operation difficulty of construction personnel, and also reduces manufacturing and maintenance costs.

[0045] Through the precise monitoring and control of the temperature and humidity detection system, the curing humidity can be accurately controlled according to the preset humidity target value and the customized comprehensive judgment algorithm. In the above example, when the humidity has not reached 80% and other conditions are met, watering and curing will continue; when the humidity reaches 80% or the algorithm determines that the stopping conditions have been met, watering will be stopped in time, effectively avoiding problems such as reduced relative humidity inside the concrete, self-drying shrinkage and early cracks caused by inaccurate humidity control, thereby ensuring the overall performance of the concrete.

[0046] The maintenance time is set by timer 6, and manual maintenance operation is not required. Watering maintenance work is automatically performed according to the preset time interval and spraying duration, which not only reduces labor costs and time, but also avoids the influence of human operation errors on the maintenance effect, and improves the maintenance efficiency and quality.

[0047] Embodiment 2

[0048] At a bridge construction site, concrete structures such as bridge piers and abutments need to be maintained. Since the bridge construction environment is rather special, close to water, with high air humidity and a relatively open construction site, higher requirements are placed on the adaptability and reliability of the maintenance device. Therefore, the sprinkler maintenance device of the present invention is used.

[0049] First, the construction workers connected the fire connector 1 to a water source near the construction site (such as a temporary water supply pipeline). Considering the possible water quality problems near the water area, the fire connector 1 was properly protected to prevent impurities from entering the device. Then, the galvanized four-way pipe fitting 2 was tightly connected to the fire connector 1.

[0050] Next, connect the normal-pressure bellows 4 to the four-way pipe fitting, install the switch ball valve 3 at the connection, ensure that the ball valve is flexible in operation and well sealed, and take care to prevent the bellows from being scratched by sharp objects during the connection process, because there may be a large number of construction materials and tools at the bridge construction site. Install a rotating seated sprinkler 5 in the middle section of the normal-pressure bellows 4 to ensure that the sprinkler is firmly installed and can withstand a certain amount of water flow impact and external environmental interference.

[0051] Finally, timer 6 is installed on the normal pressure snake-skin hose near the water source. Timer 6 is installed in a relatively dry position that is easy to operate and observe, avoiding water splashes and direct sunlight to ensure its normal operation and service life. After timer 6 is installed, it is debugged in detail to ensure that the timing function and temperature and humidity monitoring functions of solenoid valve 603 are accurate.

[0052] According to the characteristics of the bridge concrete structure and the construction environment, the daily spraying time is set at 3 hours. Since the air humidity is relatively high, appropriately reducing the spraying time can avoid excessive water accumulation on the concrete surface. The interval is set to 8 hours to give the concrete enough time to absorb moisture and adapt to changes in environmental humidity.

[0053] The preset humidity target value is 75% (relative humidity). Taking into account the high air humidity on site, the humidity target value is appropriately lowered. The preset temperature target value is 22°C, because the ambient temperature of the bridge construction environment is relatively low, and this temperature is conducive to the maintenance and strength development of concrete. Through multiple on-site tests and experience summarization, the weight coefficient related to humidity is determined to be 0.7, and the weight coefficient related to temperature is 0.3.

[0054] After completing the device connection and parameter setting, turn on the water source, and the water flows from the fire-fighting joint 1 into the galvanized four-way pipe fitting 2, and then enters the normal pressure bellows 4 through the switch ball valve 3. At the same time, the temperature and humidity detector 601 starts working. The temperature sensor and humidity sensor sense the ambient temperature and humidity respectively. The temperature sensor adopts a special waterproof design to adapt to the humid environment of bridge construction. It converts temperature changes into electrical signals. The humidity sensor also has good moisture-proof performance and converts ambient humidity changes into electrical signals. These electrical signals are processed by the signal processing unit of the temperature and humidity detector 601, converted into a transmittable standard signal form, and then transmitted to the control module 602 of the timer 6.

[0055] When the timer 6 starts the watering operation at the set time interval (i.e., once every 8 hours and each time lasting 3 hours), the control module 602 of the timer 6 sends an opening command to the solenoid valve 603. After the solenoid valve 603 is opened, the water flows through the normal pressure bellows 4 to reach the rotating seated sprinkler 5. The rotating seated sprinkler 5 adjusts the sprinkler angle according to the shape and height of the piers and abutments to ensure that the water can be evenly sprayed on the concrete surface. During the watering process, the temperature and humidity detector 601 continuously monitors the temperature and humidity data and transmits the data to the control module 602 of the timer 6.

[0056] The data receiving unit in the control module 602 of the timer 6 receives the temperature and humidity data in the form of a standard signal transmitted by the temperature and humidity detector 601, and the data comparison unit compares the received temperature and humidity data with the preset temperature and humidity target values. For example, at a certain moment, the current humidity value H is 72%, and the current temperature value S is 21°C. According to the self-defined comprehensive judgment algorithm formula: Since J=-2.4<0, and if the spraying time has not ended at this time, it is also determined that the stop condition has been met (in actual conditions, if the spraying time has not ended, it is determined that the stop condition has not been met when J≥0), the control module 602 sends a closing command to the solenoid valve 603. After the solenoid valve 603 is closed, the water flow is stopped, thereby achieving precise control of the maintenance humidity and performing maintenance work according to the predetermined time plan.

[0057] In this embodiment, the simple structure of the maintenance device makes it easy to install and operate in a complex environment such as a bridge construction site. Its components such as the fire-fighting joint 1 and the galvanized four-way pipe fitting 2 are common and low-cost, about 350 yuan per 100 meters, which reduces the construction cost. Ordinary construction personnel can complete the installation and operation of the device after simple training, reducing dependence on professional technicians and improving construction efficiency.

[0058] Through the precise monitoring and control of the temperature and humidity detection system, the curing humidity can be accurately controlled according to the preset humidity target value and the customized comprehensive judgment algorithm. In the above example, when the humidity has not reached 75% and other conditions are met, watering and curing will continue; when the humidity reaches 75% or the algorithm determines that the stopping conditions have been met, watering will be stopped in time, effectively avoiding problems such as reduced relative humidity inside the concrete, self-drying shrinkage and early cracks caused by inaccurate humidity control, thereby ensuring the quality and strength of the concrete.

[0059] The maintenance time is set by timer 6, and manual maintenance operation is not required. Watering maintenance work is automatically performed according to the preset time interval and spraying duration. This not only reduces labor costs and time, but also avoids the impact of human operational errors on the maintenance effect, and improves maintenance efficiency and quality. In a more complex environment such as bridge construction, the automated maintenance device can work stably and reliably to ensure the consistency and accuracy of concrete maintenance.

[0060] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the same elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A construction site watering maintenance device, characterized in that: The invention comprises a fire-fighting joint (1), wherein a galvanized four-way pipe fitting (2) is arranged at the bottom end of the fire-fighting joint (1), a switch ball valve (3) is installed at the end of the galvanized four-way pipe fitting (2), and a normal-pressure bellows (4) is fixedly installed at one end of the switch ball valve (3) away from the galvanized four-way pipe fitting (2), and a group of rotating seated sprinklers (5) are installed on the outer surface of the normal-pressure bellows (4), and the rotating seated sprinklers (5) comprise a connecting pipe (501), and two brackets (502) are installed on the outer surface of the connecting pipe (501), and both ends of the connecting pipe (501) are connected to the normal-pressure bellows (4) through threaded joints (503), and a timer (6) is installed on the outer surface of the normal-pressure bellows (4), and a temperature and humidity detection system is installed inside the timer (6).

2. A construction site water sprinkling maintenance device according to claim 1, characterized in that: A rotating seat (504) is installed on the outer surface of the connecting pipe (501), and a group of water pipes (505) are fixedly connected to the outer surface of the rotating seat (504), and a group of water spray heads (506) are fixedly connected to the outer surface of each water pipe (505).

3. A construction site water sprinkling maintenance device according to claim 1, characterized in that: The temperature and humidity detection system installed inside the timer (6) includes: A temperature and humidity detector (601) is used to collect temperature and humidity data of a working area in real time, the temperature and humidity detector (601) comprising a temperature sensor and a humidity sensor, the temperature sensor being able to accurately sense temperature changes in the working area and convert them into electrical signals, the humidity sensor being able to accurately sense humidity changes in the working area and convert them into electrical signals; A control module (602) is used to receive the temperature and humidity data transmitted by the temperature and humidity detector (601), and compare it with the preset temperature and humidity target values, while comprehensively considering the spraying duration and interval duration parameters set on the timer (6); The solenoid valve (603) is used to control the on and off of the water flow according to the instructions of the control module (602). When the temperature and humidity have not reached the target values ​​and the spraying time has not ended, the solenoid valve (603) is opened to allow water to flow through for watering maintenance. When the temperature and humidity reach the target values ​​and the spraying time has ended, the solenoid valve (603) is closed to stop the water flow.

4. A construction site watering maintenance device according to claim 3, characterized in that: The temperature and humidity detector (601) includes a signal processing unit for processing the electrical signals converted by the temperature sensor and the humidity sensor and converting them into a transmittable standard signal form. The solenoid valve (603) includes an electromagnetic driving unit for receiving instructions from the control module (602) and driving the valve core of the solenoid valve (603) to move, thereby realizing on-off control of water flow.

5. A construction site watering maintenance device according to claim 3, characterized in that: The control module (602) comprises a data receiving unit, a data comparing unit and a logic judgment unit, wherein the data receiving unit is used to receive the temperature and humidity data in the form of a standard signal transmitted by the temperature and humidity detector (601), and the data comparing unit is used to compare the received temperature and humidity data with preset temperature and humidity target values.

6. A construction site watering maintenance device according to claim 5, characterized in that: The logic judgment unit is used to perform logic judgment based on the comparison result and the spraying duration and interval duration parameters set by the timer (6) to determine whether the stop condition is reached. The logic judgment unit adopts a self-defined comprehensive judgment algorithm, and the specific formula is: Among them, J is the comprehensive judgment value, H is the current humidity value, and H t is the preset humidity target value, S is the current temperature value, S t is the preset temperature target value, T r is the weight coefficient related to humidity, T h is a weight coefficient related to temperature. When J ≥ 0 and the spraying time has not ended, it is determined that the stop condition has not been met. When J < 0 and the spraying time has ended, it is determined that the stop condition has been met.

7. A construction site watering maintenance device according to claim 3, characterized in that: The temperature and humidity detector (601) converts the collected temperature and humidity data into a transmittable signal form and transmits it to the control module (602). The signal transmission method uses a shielded cable to transmit the signal.

8. A construction site watering maintenance device according to claim 3, characterized in that: The control module (602) can accurately determine whether to send an opening and closing instruction to the solenoid valve (603) based on the preset temperature and humidity target values ​​and the time parameters set by the timer (6), and the judgment process includes: when the data comparison unit determines that the temperature and humidity data have not reached the preset temperature and humidity target values ​​and the logic judgment unit determines that the spraying time has not ended, the control module (602) sends an opening instruction to the solenoid valve (603); when the data comparison unit determines that the temperature and humidity data have reached the preset temperature and humidity target values ​​and the logic judgment unit determines that the spraying time has ended, the control module (602) sends a closing instruction to the solenoid valve (603).

9. A construction site watering maintenance device according to claim 3, characterized in that: The preset temperature and humidity target values ​​and the spraying duration and intermittent duration parameters on the timer (6) are set by the user according to actual needs. The setting method includes setting through an operation interface set on the control module (602). The operation interface includes numeric keys and function keys. The user inputs specific values ​​through the numeric keys and selects different parameter setting options through the function keys.

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