Spraying maintenance device for prefabricated box girder

Abstract

The prefabricated box girder spraying maintenance device is formed by splicing a plurality of maintenance plates, each maintenance plate comprises a heat preservation plate, a cavity is formed in each maintenance plate, an opening is formed in one side of each maintenance plate and communicates with the cavity in the corresponding maintenance plate, and the side, with the opening, of each maintenance plate is used for being arranged on the surface of a prefabricated box girder in a buckled mode; the spray heads are erected in the cavity of the heat preservation plate, water spraying openings of the spray heads face the bottom of the heat preservation plate, and each spray head is connected with a water supply pipeline; and the multiple liquid homogenizing plates are erected on the side, facing the bottom of the heat preservation plate, of the spray head, the adjacent liquid homogenizing plates are arranged at intervals, the liquid homogenizing plates are bent to form openings, and the openings of the liquid homogenizing plates face the spray head. By means of the technical characteristics, the heat preservation plate provides a closed heat preservation environment, liquid sprayed by the spray heads is splashed to the liquid homogenizing plate so that the liquid can more evenly drop to the surface of the prefabricated box girder, the heat preservation effect of the area of the prefabricated box girder is guaranteed, and the hydration reaction of cement and water is met.

Description

Technical Field

[0001] The invention generally relates to the field of concrete building materials, and in particular to a prefabricated box beam spraying and curing device. Background Art

[0002] Precast box girder is a beam structure that is prefabricated in a factory or prefabrication yard. It is a box-section beam, usually cast in concrete. The shape of the box section is similar to a box, with two upper and lower flange plates and web plates on both sides, with a hollow part in the middle. This structural form enables the precast box girder to have better mechanical properties when bearing vertical and horizontal loads, and can effectively transfer the load of the upper structure to the piers and foundations below.

[0003] Water is a crucial factor in the curing process of concrete products. When cement is mixed with water, a complex hydration reaction will occur. In this process, the mineral components on the surface of cement particles (such as tricalcium silicate, dicalcium silicate, etc.) will react with water to produce products such as hydrated calcium silicate gel and calcium hydroxide. These hydration products are intertwined and filled in the gaps of aggregates such as sand and gravel, causing the concrete to gradually solidify and harden, thereby gaining strength and durability.

[0004] Insulation measures are also particularly important. Large-volume concrete will generate a lot of heat during the hydration process, causing the internal temperature of the concrete to rise. If the temperature difference between the internal temperature and the external ambient temperature is too large, temperature stress will occur, causing concrete cracking.

[0005] The common maintenance of concrete products generally adopts the method of watering. Although it can ensure the hydration reaction of cement and water, the temperature difference between the internal and external environment of the concrete can easily cause cracking of the concrete product, affecting the quality of the concrete product. Summary of the invention

[0006] According to the present invention, in view of the problems existing in the above-mentioned prior art, a prefabricated box girder spray curing device is provided, which is composed of a plurality of curing plates spliced ​​together, wherein the curing plate includes an insulation plate, which has a cavity inside, one side of which is open and communicated with the cavity inside, and the open side is used to be buckled on the surface of the prefabricated box girder; a plurality of nozzles are provided, which are erected in the cavity of the insulation plate, and the water spray port is arranged toward the bottom of the insulation plate, and each nozzle is connected to a water supply pipeline; a plurality of liquid equalizing plates are provided, which are erected on the side of the nozzle facing the bottom of the insulation plate, and the adjacent liquid equalizing plates are arranged at intervals, the liquid equalizing plates are bent to form openings, and the opening direction of the liquid equalizing plates is arranged toward the nozzles. By having the above-mentioned technical features, the insulation plate provides a closed insulation environment, and the liquid sprayed by the nozzle splashes onto the liquid equalizing plate, so that the liquid drips onto the surface of the prefabricated box girder in a more evenly dispersed manner, which not only ensures the insulation effect of the prefabricated box girder area, but also satisfies the hydration reaction of cement and water.

[0007] In some embodiments, a water absorbing layer is further provided at the bottom of the insulation board, and the water absorbing layer abuts against the side of the liquid balancing plate facing away from the outlet. Therefore, when the nozzle sprays water, part of the water source will splash into the water absorbing layer through the gap between the liquid balancing plates, thereby storing the water and prolonging the long-term humidity control in the insulation board. Moreover, the water absorbing layer is in contact with the liquid balancing plate, and the excess water source can also drip onto the surface of the prefabricated box beam through the drainage of the liquid balancing plate to ensure the surface of the prefabricated box beam is moistened.

[0008] In some embodiments, an extension plate is provided on the side of the liquid balancing plate that is away from its own opening and extends toward the bottom of the heat preservation plate, and the side of the extension plate that is away from the liquid balancing plate abuts against the water absorption layer. Thus, the extension plate plays a role in framing the water absorption layer, physically moving the water absorption layer away from the liquid balancing plate, reducing the spatial area where the water absorption layer and the liquid balancing plate are in contact with each other, thereby delaying the efficiency of liquid drainage to the liquid balancing plate, and further delaying the loss of water inside the water absorption layer.

[0009] In some embodiments, the side of the extension plate abutting against the water absorbing layer is wavy. Thus, the wavy extension plate can reduce the area where the extension plate and the water absorbing layer contact each other, slowing down the loss rate of water flow in the water absorbing layer, and the wavy contact area is smoother, avoiding the local contact area being too sharp, which increases the flow diversion efficiency and accelerates the dripping speed of the liquid balancing plate.

[0010] In some embodiments, the edge of the opening of the liquid balancing plate is provided with a plurality of notches along its length direction, so that a plurality of water-reservoir dripping parts are formed on the edge, thereby making it easier for the liquid flowing on the liquid balancing plate to be collected in the water-reservoir dripping parts, thereby speeding up the efficiency of the liquid dripping and reducing the residence time of the liquid on the liquid balancing plate.

[0011] In some embodiments, a coiled humidifying tube is fixed at the bottom of the insulation board, one end of the humidifying tube is sealed, and the other end is connected to an external water source. A plurality of water holes are spaced around the humidifying tube. Thus, the water absorption layer can be injected with water according to the ambient humidity in the insulation board, thereby controlling the ambient humidity in the insulation board. The ambient humidity in the insulation board can be accurately controlled in the drying stage of the later stage of maintenance. On the other hand, the waste caused by the large amount of water splashing from the nozzle can be reduced, saving water consumption.

[0012] In some embodiments, the water hole is provided in the direction of the humidifying tube toward the bottom wall of the insulation board. Thus, when the humidifying tube is filled with water, the water source splashes onto the inner wall of the insulation board, which can increase the splashing range of the water source, thereby improving the uniformity of the distribution of the water source in the water absorption layer.

[0013] In some embodiments, both ends of each of the liquid balancing plates are connected to the inner wall of the insulation plate in a sliding manner along the height direction of the insulation plate. As a result, during the process of the nozzle spraying water, the liquid balancing plate receives most of the liquid, and the impact force of the water source drives the extension plate to press back and forth toward the water absorption layer, thereby accelerating the flow efficiency of the water source inside the water absorption layer, and making the water source inside the water absorption layer more evenly distributed.

[0014] In some embodiments, a slider is fixedly connected to each end of the liquid balancing plate, and a slide groove for accommodating the slider is provided in the inner wall of the insulation plate along the height direction of the insulation plate and in the area opposite to the slider, thereby achieving the sliding effect of the liquid balancing plate and the insulation plate.

[0015] In some embodiments, the cross section of the slider is rectangular, thereby limiting the swing of the liquid balancing plate, ensuring the uniformity of the liquid dripping from the liquid balancing plate on the one hand, and ensuring the stability of the contact between the extension plate and the water absorbing layer on the other hand.

[0016] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structural schematic diagram of a prefabricated box girder spray curing device according to an embodiment of the present invention is shown;

[0018] Figure 2 A side structural cross-sectional view of a prefabricated box girder spray curing device according to an embodiment of the present invention is shown;

[0019] Figure 3 A schematic structural diagram of a spraying area in a spraying curing device for a prefabricated box girder according to an embodiment of the present invention is shown;

[0020] Figure 4 A schematic structural diagram of a uniform dispersion zone in a prefabricated box beam spray curing device according to an embodiment of the present invention is shown;

[0021] Figure 5 A schematic structural diagram of a moisturizing zone in a spray curing device for a prefabricated box girder according to an embodiment of the present invention is shown;

[0022] Figure 6 A schematic structural diagram of a humidification zone in a spray curing device for a prefabricated box girder according to an embodiment of the present invention is shown;

[0023] Figure 7 A schematic structural diagram of a liquid balancing plate in a spray curing device for a prefabricated box girder according to an embodiment of the present invention is shown;

[0024] Figure 8A schematic structural diagram of the inner wall of an insulation board in a spray curing device for a prefabricated box girder according to an embodiment of the present invention is shown.

[0025] Explanation of symbols

[0026] 1. Insulation board; 11. Spaced area; 12. Spraying area; 13. Dispersion area; 14. Moisturizing area; 15. Humidification area; 16. Slide; 21. Frame; 22. Nozzle; 3. Liquid distribution plate; 31. Splashing plate; 311. Notch; 312. Water storage dripping part; 4. Water absorption layer; 41. Sponge; 42. Cloth cover; 5. Humidification pipe; 51. Water hole; 6. Extension plate; 7. Slider. DETAILED DESCRIPTION

[0027] Hereinafter, preferred embodiments (or implementation modes) of the present invention will be described in detail with reference to the accompanying drawings.

[0028] The present invention provides a prefabricated box girder spray curing device, which is mainly used for the curing work in the horizontal plane area of ​​the prefabricated box girder. The device is composed of a plurality of curing plates spliced ​​together. A nozzle 22 is arranged in the curing plate, thereby achieving the thermal insulation effect of the covered area and satisfying the complex hydration reaction of cement and water.

[0029] Reference below Figure 1-Figure 8 To describe a new type of prefabricated box girder spraying curing device.

[0030] Figure 1 The overall structural schematic diagram of a prefabricated box girder spray curing device according to an embodiment of the present invention is shown; Figure 2 The side structure cross-sectional view of a prefabricated box beam spray curing device according to an embodiment of the present invention is shown. Figure 1 and Figure 2 As shown, the present embodiment provides a prefabricated box girder spray curing device which is formed by splicing a number of curing plates. Among them, the curing plate includes an insulation plate 1, which is generally a rectangular structure to ensure that the gap between the insulation plates 1 is reduced when adjacent insulation plates 1 are spliced, so as to ensure the curing effect of the horizontal surface of the prefabricated box girder. The insulation plate 1 is mainly made of insulation material, which can be rock wool, glass wool, or polystyrene foam board and polyurethane foam in organic insulation materials. A cavity is provided in the insulation plate 1, one side of which is an opening connected to the internal cavity. Viewed from the side, the insulation plate 1 is provided with a blank area 11, a spray area 12, a uniform dispersion area 13, a moisturizing area 14, and a humidifying area 15 in sequence from the opening side to the bottom of the insulation plate 1.

[0031] Among them, the blank area 11 is a blank area at the edge of the insulation board 1, and its area height is generally 4cm-8cm. On the one hand, it can increase the dispersion range of the liquid splashed in the spray area 12 and ensure the uniformity of the liquid distribution. On the other hand, it also leaves a safe space to prevent the insulation board 1 from being compressed and the internal components from contacting the surface of the prefabricated box beam.

[0032] Figure 3 The structure diagram of the spraying area 12 in the spraying curing device for prefabricated box beams according to an embodiment of the present invention is shown. Figure 3 As shown, the spray area 12 is composed of a frame 21 and a nozzle 22. The nozzle 22 is a scattering nozzle 22 and is provided in plurality and evenly arranged within the range of the spray area 12. Adjacent nozzles 22 are arranged at intervals and are connected and fixed to each other by the frame 21. The frame 21 is fixed to the inner wall of the insulation board 1. Each nozzle 22 is arranged along the height direction of the insulation board 1, and its spray end faces the opening direction away from the insulation board 1. Moreover, each nozzle 22 is connected to each other by a water supply pipe and is connected to an external water source. Through the supply of the external water source, the plurality of nozzles 22 perform a dispersed water spraying operation toward the bottom direction of the insulation board 1.

[0033] Figure 4 The schematic diagram of the structure of the uniform dispersion zone 13 in the spray curing device for prefabricated box beams according to an embodiment of the present invention is shown. Figure 4 As shown, the uniform dispersion area 13 is composed of a plurality of liquid uniformizing plates 3, and adjacent liquid uniformizing plates 3 are arranged at intervals. In this embodiment, the total number of liquid uniformizing plates 3 is 7 for example and is set up in the middle area of ​​the insulation board 1. The liquid uniformizing plate 3 is a plate body formed by bending the middle of a straight plate. Specifically, it may include two splashing plates 31 arranged at an angle, and an opening with an angle of 60°-90° is formed between the two splashing plates 31. In the insulation board 1, the opening direction is arranged toward the direction of the nozzle 22. When the nozzle 22 is working, the liquid is evenly splashed in the direction of the liquid uniformizing plate 3, and part of the liquid will splash onto the inner wall of the splashing plate 31, and under the action of water pressure, the liquid is splashed everywhere, and under the action of gravity, it is evenly splashed on the horizontal surface of the prefabricated box beam, thereby improving the uniformity of liquid splashing and ensuring the uniform contact between the liquid and the surface of the covered area in the area covered by the insulation board 1.

[0034] Figure 5 The structure diagram of the moisturizing area 14 in the spray curing device for prefabricated box beams according to an embodiment of the present invention is shown. Figure 5As shown, the moisturizing area 14 is provided with a water-absorbing layer 4, and the water-absorbing layer 4 can be a sponge 41 and a cloth cover 42 wrapped around the outside of the sponge 41. The edge of the water-absorbing layer 4 is fixed to the inner wall of the insulation board 1, and the middle area thereof is supported by a plurality of liquid-equalizing plates 3 at the bottom. When the nozzle 22 sprays liquid, due to the interval arrangement of the liquid-equalizing plates 3, part of the liquid will be sprayed into the water-absorbing layer 4 through the gaps between the liquid-equalizing plates 3, and will be absorbed by the sponge 41. Since the sponge 41 is easily damaged due to wear, the sponge 41 is protected under the covering of the cloth cover 42, and the normal water absorption of the sponge 41 is not affected, thereby delaying the service life of the water-absorbing layer 4. In an environment where the insulation board 1 is covered with the prefabricated box beam for a long time, the moisture inside the water-absorbing layer 4 delays the loss of the environmental humidity in the cavity of the insulation board 1, thereby ensuring the environmental humidity for the maintenance of the prefabricated box beam. Moreover, if there is more water inside the water absorbing layer 4, under the support of the liquid balancing plate 3, the excess water can also be drained through the bending area of ​​the liquid balancing plate 3, and the excess liquid can be evenly dripped onto the area covered by the insulation plate 1 through the back side of the two sputtering plates 31.

[0035] Figure 6 The structure diagram of the humidification zone 15 in the spray curing device for prefabricated box beams according to an embodiment of the present invention is shown. Figure 6 As shown, the humidification area 15 includes a humidification pipe 5, one end of which is sealed, and the other end passes through the side wall of the insulation board 1 and is connected to the external water source. The humidification pipe 5 is coiled on the upper bottom of the insulation board 1 and fixed to the top area of ​​the insulation board 1. The humidification pipe 5 is provided with a plurality of water holes 51 at intervals. In the later stage of concrete curing, there is no need to spray a large amount of water through the nozzle 22 to ensure the environmental humidity of the area covered by the insulation board 1. Water can be injected through the humidification pipe 5 to soak the water absorption layer 4, so that the humidity environment of the area covered by the insulation board 1 is ensured under the slow evaporation of the liquid in the water absorption layer 4.

[0036] In some embodiments, in order to improve the uniformity of water distribution in the water absorption layer 4, the above-mentioned water hole 51 is opened in the area of ​​the humidification tube 5 facing the top of the insulation board 1, so that when water flows out of the water hole 51, under the action of water pressure, the liquid splashes to the top of the insulation board 1, producing a diffusion effect, so that the liquid can be evenly sprayed above the water absorption layer 4, so that the water storage amount in each area of ​​the water absorption layer 4 is more uniform.

[0037] Figure 7 The schematic diagram of the partial structure of the liquid balancing plate 3 in the spray curing device for prefabricated box beams according to an embodiment of the present invention is shown. Figure 7As shown, in some embodiments, in order to slow down the water loss of the water absorbing layer 4, an extension plate 6 is provided at the tip of the liquid balancing plate 3 extending toward the water absorbing layer 4 along the length direction of the liquid balancing plate 3, and the extension plate 6 is supported at the bottom of the water absorbing layer 4, so as to physically move the water absorbing layer 4 away from the liquid balancing plate 3, thereby avoiding direct contact between the water absorbing layer 4 and the liquid balancing plate 3, and reducing the amount of liquid loss. The edge of the extension plate 6 in contact with the water absorbing layer 4 is set to be wavy, which can reduce the area of ​​contact between the extension plate 6 and the water absorbing layer 4 and reduce the area where the liquid is diverted to the extension plate 6. On the other hand, the wavy area of ​​the extension plate 6 is smoother, so that the pressure on the water absorbing layer 4 is more uniform, avoiding excessive local pressure on the water absorbing layer 4 causing excessive liquid loss, and overall controlling the drainage rate of the water absorbing layer 4.

[0038] In some embodiments, in order to improve the dripping efficiency of the liquid on the liquid equalizing plate 3, the edge of each splash plate 31 is provided with a plurality of notches 311 spaced apart along its length direction, so that a plurality of water storage drip portions 312 are formed at the edge of the splash plate 31, so that the liquid flowing on the back side of the splash plate 31 is guided to the water storage drip portion 312. As the liquid accumulates, the dripping efficiency of the liquid is accelerated, the uniformity of the liquid dripping area is ensured, and the moistening of the area covered by the insulation board 1 is ensured.

[0039] Figure 8 The schematic diagram of the structure of the inner wall of the insulation board 1 in the spray curing device for prefabricated box beams according to an embodiment of the present invention is shown. Figure 7 and Figure 8 As shown, in some embodiments, a slider 7 with a rectangular cross section is extended from each of the two ends of the liquid balancing plate 3, and a slide groove 16 cooperating with the slider 7 is provided in the area corresponding to the inner wall of the heat preservation plate 1 and the slide groove 16 along the height direction of the heat preservation plate 1 to meet the sliding of the slider 7 in the slide groove 16. When the nozzle 22 sprays liquid, the liquid balancing plate 3 is driven to move upward under the action of water pressure, so that the extension plate 6 reciprocally squeezes the bottom of the water absorption layer 4. On the one hand, the water absorption layer 4 is squeezed reciprocally, which also accelerates the flow efficiency of the liquid inside the water absorption layer 4 and improves the uniformity of liquid distribution; on the other hand, it can also restore the deformation space of the sponge 41 in the water absorption layer 4, ensuring the stability of the contact area between the extension plate 6 and the water absorption layer 4.

[0040] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A prefabricated box beam spray curing device, characterized in that: It is composed of several maintenance plates spliced ​​together, and the maintenance plates include The insulation board (1) has a cavity inside, one side of which is open and communicates with the cavity inside, and the open side is used to be buckled on the surface of the prefabricated box beam; A plurality of nozzles (22) are provided and are mounted in the cavity of the heat preservation board (1), and the water spraying ports thereof are arranged toward the bottom of the heat preservation board (1), and each nozzle (22) is interconnected with an external water source; A plurality of liquid balancing plates (3) are provided and are mounted on one side of the nozzle (22) facing the bottom of the heat preservation plate (1). Adjacent liquid balancing plates (3) are arranged at intervals. The liquid balancing plates (3) are bent to form openings, and the opening direction of the liquid balancing plates (3) is arranged toward the nozzle (22).

2. The prefabricated box beam spray curing device according to claim 1, characterized in that: A water absorbing layer (4) is also provided at the bottom of the thermal insulation plate (1), and the water absorbing layer (4) abuts against a side of the liquid balancing plate (3) facing away from the outlet.

3. The prefabricated box beam spray curing device according to claim 2, characterized in that: An extension plate (6) is provided on the side of the liquid balancing plate (3) that is away from its own opening and extends toward the bottom of the heat preservation plate (1), and the side of the extension plate (6) that is away from the liquid balancing plate (3) abuts against the water absorption layer (4).

4. The prefabricated box beam spray curing device according to claim 3, characterized in that: The side of the extension plate (6) abutting against the water absorbing layer (4) is wavy.

5. The prefabricated box beam spray curing device according to claim 4, characterized in that: The edge of the opening of the liquid balancing plate (3) is provided with a plurality of notches (311) along its length direction, so that a plurality of water storage dripping portions (312) are formed on the edge.

6. The prefabricated box beam spray curing device according to claim 4, characterized in that: A coiled humidifying tube (5) is fixed to the bottom of the insulation board (1); one end of the humidifying tube (5) is sealed, and the other end is connected to an external water source; a plurality of water holes (51) are spaced apart around the circumference of the humidifying tube (5).

7. The prefabricated box beam spray curing device according to claim 6, characterized in that: The water through hole (51) is opened in the direction of the humidifying pipe (5) toward the bottom wall of the thermal insulation board (1).

8. The prefabricated box beam spray curing device according to claim 4, characterized in that: Both ends of each of the liquid balancing plates (3) are slidably connected to the inner wall of the thermal insulation plate (1) along the height direction of the thermal insulation plate (1).

9. The prefabricated box beam spray curing device according to claim 8, characterized in that: A sliding block (7) is fixedly connected to each of the two ends of the liquid balancing plate (3), and a sliding groove (16) for accommodating the sliding block (7) is provided on the inner wall of the heat preservation plate (1) in an area opposite to the sliding block (7) along the height direction of the heat preservation plate (1).

10. The prefabricated box beam spray curing device according to claim 8, characterized in that: The cross section of the slider (7) is rectangular.

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