Constant-temperature and constant-humidity maintenance system for prefabricated box girder

Abstract

The utility model relates to the technical field of road and bridge construction, and discloses a prefabricated box girder constant-temperature and constant-humidity maintenance system which comprises a maintenance box. According to the constant-temperature and constant-humidity maintenance system for the prefabricated box girder, the input end of the spraying assembly is connected to the water supply equipment, so that water can be sprayed into the maintenance box through the spraying assembly to humidify a box girder plate; a temperature sensor arranged on the inner wall of the curing box can measure the temperature in the curing box so as to be matched with a pneumatic heating mechanism to heat the interior of the curing box to reach the curing temperature required by the box girder plate, and a cooling effect can be provided for the curing box after a cooling device and an air supply device on the outer side are started; and meanwhile, the air supply device can be driven to transversely move in the external expansion mechanism by starting the guide sliding mechanism, so that wind power can be uniformly transmitted into the curing box, the interior of the curing box has constant temperature, constant humidity and ventilation effects through cooperation, and the curing effect of the box girder plate in the curing box is better.

Description

Technical Field

[0001] This utility model belongs to the field of road and bridge construction technology, and in particular relates to a constant temperature and humidity curing system for precast box girders. Background Technology

[0002] Precast box girders are concrete box girders that are prefabricated in a factory or prefabrication site. Precast box girders offer advantages such as efficient construction, superior quality control, and the ability to work concurrently with the substructure, thereby accelerating project progress and reducing project costs.

[0003] An existing patent (publication number: CN113799241B) discloses a precast box girder maintenance device, including a collection part, a traction part, a retractable bearing mechanism, and a tarpaulin. The tarpaulin is draped over the bearing mechanism. The traction part is detachably connected to one end of the bearing mechanism, and the collection part is detachably connected to the other end of the bearing mechanism. The collection part has a cloth-collecting mechanism and a collection rack groove. The cloth-collecting mechanism is provided in several groups, which are arranged along the outer contour of the bearing mechanism. Each group of cloth-collecting mechanisms is equipped with a roller, and the tarpaulin is wound on the roller. The collection rack groove is located on the inner side below the cloth-collecting mechanism.

[0004] After the concrete is poured, the general curing method for precast beams is to cover them with geotextile and spray water. This curing method is not effective, the surface is unevenly moistened, and it is labor-intensive to spray water every once in a while. At the same time, premature watering can damage the surface quality of the concrete. Therefore, a constant temperature and humidity curing system for precast box girders is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a precast box girder constant temperature and humidity curing system, which has the advantages of stable constant temperature and humidity effect, timely temperature monitoring, sufficient drying effect, and good curing effect. It solves the problems pointed out in the above-mentioned comparative documents, such as poor curing effect, uneven surface moisture, waste of labor for watering curing at regular intervals, and premature watering curing causing damage to the surface quality of concrete.

[0006] To achieve the above objectives, this application provides the following technical solution: a constant temperature and humidity curing system for precast box girders, comprising a curing box, with an expansion mechanism fixedly connected to both sides of the curing box, a guide sliding mechanism provided inside the expansion mechanism, an air supply device inserted into the inner wall of the guide sliding mechanism, a heating mechanism provided at the bottom of the curing box, a spray assembly provided at the top of the curing box, a cooling device fixedly connected to the outer surface of the curing box, a temperature sensor provided on the inner wall of the curing box, an insulated door hinged to the outer surface of the curing box, and an installation groove provided inside the curing box, with the heating mechanism located inside the installation groove.

[0007] The above solution connects the spray assembly to the top of the curing box and connects the input end of the spray assembly to a water supply device. Water is then sprayed into the curing box to humidify the girder slab. A temperature sensor on the inner wall of the curing box measures the internal temperature, allowing the pneumatic heating mechanism to raise the internal temperature to the required curing temperature. The external cooling and air supply devices provide cooling, and the guide mechanism drives the air supply device to move laterally within the expansion mechanism, ensuring even airflow into the curing box. This combination provides constant temperature, humidity, and ventilation, resulting in better curing of the girder slab.

[0008] Furthermore, the curing box includes a curing box body, the interior of which is provided with a constant temperature chamber, and the temperature sensor is connected to the inner wall of the constant temperature chamber, and the number of the temperature sensors is set to several.

[0009] The above solution involves placing multiple temperature sensors inside the constant temperature chamber to monitor temperature at various points on the inner wall of the chamber. This allows the main control unit to adjust the internal temperature in a timely manner, preventing high or low temperatures from adversely affecting the maintenance of the box girder slab.

[0010] Furthermore, the guide mechanism includes an electric slide rail, a guide motor is provided at the bottom of the electric slide rail, a guide block is provided on the inner wall of the electric slide rail, and the bottom of the air supply device is inserted into the inside of the guide block.

[0011] The above scheme allows the guide slide to slide inside the electric slide rail by activating the guide slide motor, thereby providing lateral displacement driving force for the top air supply device. This enables the air supply device to flexibly change its air supply position outside the curing box, allowing the air force to be evenly transmitted to the inside of the curing box.

[0012] Furthermore, the spray assembly includes a spray pipe, and a spray head is fixedly connected to the bottom of the spray pipe, and the number of spray heads is set to several.

[0013] The above solution connects the water supply equipment to the input end of the spray pipe, and with the help of multiple spray heads extending into the curing box, the humidifying water can be sprayed in a mist onto the surface of the box girder, thus providing a more uniform humidification effect.

[0014] Furthermore, the air supply device includes a blower, a limiting slider is fixedly installed on the top of the blower, the expansion mechanism includes an expansion box, a baffle is fixedly connected to the outer surface of the expansion box, and the limiting slider is slidably connected to the top of the inner wall of the expansion box.

[0015] With the above scheme, when the guide slider is driven to slide, it drives the top blower to move along the top of the electric slide rail. At the same time, the limiting slider at the top of the blower slides synchronously on the top of the inner wall of the outer expansion box. This allows the blower to move along the inside of the curing box and draw air into the inside of the curing box at different positions. In addition, the baffle can reduce the entry of dust and prevent a large amount of dust from being transmitted to the inside of the curing box by the blower.

[0016] Furthermore, the heating mechanism includes heating rods, and the number of heating rods is set in several groups. The array of several groups of heating rods is distributed inside the mounting groove, and an isolation mesh frame is fixedly connected to the top of the mounting groove.

[0017] The above solution allows the heating rod to generate heat inside the installation groove, which in turn enables the curing box to heat up rapidly and provide a suitable curing temperature for the box girder. The isolation mesh can buffer the heat transfer and prevent high temperature from directly contacting the box girder and causing adverse effects.

[0018] Furthermore, the cooling device includes a cooling circulation pipe, and a fixing sleeve is fitted onto the outer surface of the cooling circulation pipe, and the number of fixing sleeves is set to several.

[0019] The above solution uses multiple fixed sleeves to fix the cooling circulation pipe to the outside of the curing chamber. When cooling water enters the cooling circulation pipe, it can provide a cooling effect, so that the inside of the curing chamber can be cooled down quickly.

[0020] Furthermore, the number of the external expansion box and the blower are both set in two sets.

[0021] The above solution involves placing two sets of external expansion boxes and blowers on both sides of the curing box, thus providing installation space for the electric slide rails and blowers. The two sets of blowers work together to provide sufficient dry airflow to the inside of the curing box, thereby rapidly improving its internal humid environment.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This precast box girder constant temperature and humidity curing system connects a spray assembly to the top of the curing box and connects the input end of the spray assembly to a water supply device. Water is then sprayed into the curing box to humidify the box girder slab. A temperature sensor on the inner wall of the curing box measures the internal temperature, allowing for coordinated pneumatic heating to raise the internal temperature to the required curing temperature. An external cooling and air supply device provides cooling, while a guide mechanism drives the air supply device to move laterally within the expansion mechanism, ensuring even airflow into the curing box. This combination of features creates a constant temperature, humidity, and ventilation system within the curing box, resulting in better curing of the box girder slab. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the maintenance box of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the external expansion box of this utility model;

[0027] Figure 4 This is a schematic diagram of the mounting groove of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the blower of this utility model.

[0029] The markings in the diagram are as follows: 1. Curing box; 2. Outer expansion mechanism; 3. Guide slide mechanism; 4. Air supply device; 5. Heating mechanism; 6. Spray assembly; 7. Cooling device; 8. Temperature sensor; 9. Insulated door; 10. Mounting slot; 101. Curing box body; 102. Constant temperature chamber; 301. Electric slide rail; 302. Guide slide motor; 303. Guide slide block; 601. Spray pipe; 602. Spray head; 401. Air supply fan; 402. Limiting slide block; 201. Outer expansion box; 202. Baffle; 501. Heating rod; 502. Isolation net frame; 701. Cooling circulation pipe; 702. Fixing sleeve. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1 , Figure 2 and Figure 4 This embodiment of a precast box girder constant temperature and humidity curing system includes a curing box 1. An expansion mechanism 2 is fixedly connected to both sides of the curing box 1. A guide sliding mechanism 3 is installed inside the expansion mechanism 2. An air supply device 4 is inserted into the inner wall of the guide sliding mechanism 3. A heating mechanism 5 is installed at the bottom of the curing box 1. A spray assembly 6 is installed at the top of the curing box 1. A cooling device 7 is fixedly connected to the outer surface of the curing box 1. A temperature sensor 8 is installed on the inner wall of the curing box 1. An insulation door 9 is hinged to the outer surface of the curing box 1. An installation groove 10 is opened inside the curing box 1. The heating mechanism 5 is located inside the installation groove 10. The system is constructed by connecting the spray assembly 6 to the top of the curing box 1 and connecting the input end of the spray assembly 6 to... The water supply equipment allows water to be sprayed into the curing box 1 through the spray assembly 6 to humidify the box girder slab. The temperature sensor 8 installed on the inner wall of the curing box 1 can measure the internal temperature of the curing box 1 so that the pneumatic heating mechanism 5 can raise the internal temperature of the curing box 1 to reach the required curing temperature of the box girder slab. When the external cooling device 7 and the air supply device 4 are activated, the curing box 1 can be cooled. At the same time, the guide sliding mechanism 3 can drive the air supply device 4 to move laterally inside the expansion mechanism 2 so that the air force can be evenly delivered to the inside of the curing box 1. Thus, the inside of the curing box 1 has a constant temperature, humidity and ventilation effect, so that the curing effect of the box girder slab inside is better.

[0032] Please see Figure 1 , Figure 2 and Figure 5 The guide mechanism 3 includes an electric slide rail 301, a guide motor 302 is provided at the bottom of the electric slide rail 301, and a guide slider 303 is provided on the inner wall of the electric slide rail 301. The bottom of the air supply device 4 is inserted into the inside of the guide slider 303. By starting the guide motor 302, the guide slider 303 can be driven to slide inside the electric slide rail 301, thereby providing lateral displacement driving force for the air supply device 4 at the top, so that the air supply device 4 can flexibly change the air supply position outside the curing box 101, so that the air force can be evenly transmitted to the inside of the curing box 101.

[0033] Please see Figure 3 and Figure 5The air supply device 4 includes a blower 401, and a limiting slider 402 is fixedly installed on the top of the blower 401. The expansion mechanism 2 includes an expansion box 201, and a baffle 202 is fixedly connected to the outer surface of the expansion box 201. The limiting slider 402 is slidably connected to the top of the inner wall of the expansion box 201. When the guide slider 303 is driven to slide, it drives the blower 401 at the top to move along the top of the electric slide rail 301. At the same time, the limiting slider 402 at the top of the blower 401 slides synchronously on the top of the inner wall of the expansion box 201. This allows the blower 401 to move along the inside of the curing box 101 and draw air to the inside of the curing box 101 at different positions. In addition, the baffle 202 can reduce the entry of dust and prevent a large amount of dust from being transmitted to the inside of the curing box 101 through the blower 401.

[0034] Please see Figure 1 and Figure 2 The cooling device 7 includes a cooling circulation pipe 701. A fixing sleeve 702 is sleeved on the outer surface of the cooling circulation pipe 701. Several fixing sleeves 702 are provided to fix the cooling circulation pipe 701 to the outside of the curing chamber 101 through multiple fixing sleeves 702. When cooling water enters the interior of the cooling circulation pipe 701, it can provide a cooling effect so that the interior of the curing chamber 101 can be cooled down quickly.

[0035] This embodiment of a precast box girder constant temperature and humidity curing system utilizes multiple temperature sensors 8 installed inside the constant temperature chamber 102. These sensors monitor temperature at multiple points on the inner wall of the chamber, preventing adverse effects of high or low temperatures on the curing of the box girder. Two sets of outward-expanding boxes 201 and blowers 401 are positioned on either side of the curing chamber 101, providing space for the electric slide rails 301 and blowers 401. The guide sliders 303 move the blowers 401, providing ample dry airflow to the interior of the curing chamber 101 and rapidly improving its humid environment. Multiple heating rods 501 heat the interior of the curing chamber 101 within the mounting groove 10, rapidly raising the temperature to provide warmth for the box girder. Providing a suitable curing temperature, the isolation mesh frame 502 can buffer the temperature transfer, preventing high temperature from directly contacting the box girder and causing adverse effects. The cooling circulation pipe 701 is fixed to the outside of the curing box 101. When cooling water enters the cooling circulation pipe 701, it can provide a cooling effect, so that the inside of the curing box 101 can be cooled down quickly. By connecting the water supply equipment to the input end of the spray pipe 601, and with the multiple spray heads 602 extending into the curing box 101, the humidifying water can be sprayed into a mist onto the surface of the box girder to provide a relatively uniform humidification effect. This results in a relatively stable constant temperature and humidity effect inside the curing box 101, and the temperature can be monitored in time, providing sufficient drying effect and excellent curing effect.

[0036] It should be noted that...

[0037] The working principle of the above embodiments is as follows:

[0038] Multiple temperature sensors 8 are installed inside the constant temperature chamber 102. These sensors, along with the main control unit, monitor the internal temperature of the constant temperature chamber 102. When heating is required, the heating rod 501 is activated to heat the interior of the mounting slot 10, rapidly raising the internal temperature of the curing chamber 101 to the desired curing temperature. When cooling is required, multiple fixing sleeves 702 secure the cooling circulation pipe 701 to the outside of the curing chamber 101. After connecting to a circulating water supply system, cooling water enters the cooling circulation pipe 701, uniformly cooling the outside of the curing chamber 101. Two sets of external expansion boxes 201 are installed within the curing chamber 102. On both sides of 1, space is provided for the installation of electric slide rail 301 and blower 401. By starting the guide slide motor 302, the guide slide block 303 is driven to slide inside the electric slide rail 301 to drive the blower 401 to move along the top of the electric slide rail 301. This allows the blower 4 to flexibly change the blower position outside the curing box 101 to drive the dry airflow to be evenly delivered into the interior of the curing box 101. By connecting the water supply equipment to the input end of the spray pipe 601, and with the help of multiple spray heads 602, the humidifying water can be sprayed into a mist and projected onto the surface of the box girder plate to quickly humidify the surface of the box girder plate.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application.

Claims

1. A precast box girder constant temperature and humidity curing system, comprising a curing box (1), characterized in that: Both sides of the curing box (1) are fixedly connected to an expansion mechanism (2). The expansion mechanism (2) is provided with a guide sliding mechanism (3). An air supply device (4) is inserted into the inner wall of the guide sliding mechanism (3). A heating mechanism (5) is provided at the bottom of the curing box (1). A spray assembly (6) is provided at the top of the curing box (1). A cooling device (7) is fixedly connected to the outer surface of the curing box (1). A temperature sensor (8) is provided on the inner wall of the curing box (1). An insulation door (9) is hinged to the outer surface of the curing box (1). An installation groove (10) is opened inside the curing box (1). The heating mechanism (5) is located inside the installation groove (10).

2. The precast box girder constant temperature and humidity curing system according to claim 1, characterized in that: The curing box (1) includes a curing box body (101), and a constant temperature chamber (102) is provided inside the curing box body (101). The temperature sensor (8) is connected to the inner wall of the constant temperature chamber (102), and the number of temperature sensors (8) is set to several.

3. The precast box girder constant temperature and humidity curing system according to claim 1, characterized in that: The guide mechanism (3) includes an electric slide rail (301), a guide motor (302) is provided at the bottom of the electric slide rail (301), a guide block (303) is provided on the inner wall of the electric slide rail (301), and the bottom of the air supply device (4) is inserted into the inside of the guide block (303).

4. The precast box girder constant temperature and humidity curing system according to claim 1, characterized in that: The spray assembly (6) includes a spray pipe (601), and a spray head (602) is fixedly connected to the bottom of the spray pipe (601). The number of spray heads (602) is set to several.

5. The precast box girder constant temperature and humidity curing system according to claim 1, characterized in that: The air supply device (4) includes a blower (401), and a limiting slider (402) is fixedly installed on the top of the blower (401). The expansion mechanism (2) includes an expansion box (201), and a baffle (202) is fixedly connected to the outer surface of the expansion box (201). The limiting slider (402) is slidably connected to the top of the inner wall of the expansion box (201).

6. The precast box girder constant temperature and humidity curing system according to claim 1, characterized in that: The heating mechanism (5) includes heating rods (501), and the number of heating rods (501) is set in several groups. The array of several groups of heating rods (501) is distributed inside the mounting groove (10), and the top of the mounting groove (10) is fixedly connected to an isolation mesh frame (502).

7. The precast box girder constant temperature and humidity curing system according to claim 1, characterized in that: The cooling device (7) includes a cooling circulation pipe (701), and a fixed sleeve (702) is sleeved on the outer surface of the cooling circulation pipe (701). The number of fixed sleeves (702) is set to several.

8. The precast box girder constant temperature and humidity curing system according to claim 5, characterized in that: The number of the outer expansion box (201) and the blower (401) is set in two sets.

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