A concrete box girder curing device and an automatic curing system

Abstract

The present invention relates to the technical field of concrete box girder maintenance, and specifically discloses a concrete box girder maintenance device and an automatic maintenance system. The maintenance device includes: a sliding cross beam, which is used to slide on a moving formwork machine; it also includes two connecting frames, which are respectively arranged at both ends of the sliding cross beam, and are provided with nozzles for spraying the upper surface of the box girder; it further includes two corner frames, which are respectively connected to the two connecting frames, and are provided with nozzles for spraying the side surface of the box girder; it also includes a horizontal frame, which connects the two corner frames, and is provided with nozzles for spraying the bottom surface of the box girder. It can solve the problem in the prior art that it is difficult to comprehensively moisturize and maintain the side surface and the bottom surface of the box girder.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete box girder curing, and particularly relates to a concrete box girder curing device and an automatic curing system. Background Art

[0002] A movable formwork bridge machine is a construction machine with a built-in formwork that uses a bearing platform or pier column as a support to cast a bridge on-site. Its main features include good construction quality, simple construction operation, low cost, etc. Abroad, it has been widely used in the construction of continuous beams of highway bridges and railway bridges, and is a relatively advanced construction method. In China, it has begun to be used on expressways and dedicated passenger railway lines.

[0003] However, after the movable formwork is poured, the curing of the concrete box girder is generally still carried out by manual sprinkling. Manual curing is generally not timely and accurate enough. This method can generally continuously sprinkle water and keep the top surface of the concrete box girder moist, but it is difficult to achieve comprehensive moisture preservation for the side and bottom surfaces of the box girder. In addition, the frequency of manual curing is low, and the specific temperature and humidity of the concrete box girder are not clear, thus increasing the risk of the box girder cracking. Summary of the Invention

[0004] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide a concrete box girder curing device and an automatic curing system, which can solve the problem that it is difficult to achieve comprehensive moisture preservation for the side and bottom surfaces of the box girder in the prior art.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] On the one hand, the present invention provides a concrete box girder curing device, including:

[0007] A sliding cross beam, which is used to slide on the movable formwork machine;

[0008] Two connecting frames, which are respectively arranged at both ends of the sliding cross beam, and are provided with nozzles for spraying the upper surface of the box girder;

[0009] Two corner frames, which are respectively connected to the two connecting frames, and are provided with nozzles for spraying the side surface of the box girder;

[0010] A horizontal frame, which connects the two corner frames, and is provided with nozzles for spraying the bottom surface of the box girder.

[0011] On the basis of the above technical solution, the corner frame is triangular and is used to be arranged on the side surface of the box girder, so that two of its sides are respectively located under the flange plate of the box girder and on the side surface of the web of the box girder and are provided with nozzles.

[0012] On the basis of the above technical solution, it further includes a slide rail, which is used to be arranged above the movable formwork machine, and pulleys matching the slide rail are arranged below the sliding cross beam.

[0013] On the basis of the above technical solution, the spray heads on the connecting frame, corner frame and horizontal frame are arranged at intervals of 0.3 m - 0.8 m.

[0014] On the basis of the above technical solution, the distance between the two corner frames is 1 m - 2.4 m greater than the width between the two flange plates of the box girder.

[0015] On the other hand, the present invention provides an automatic curing system for concrete box girders, including:

[0016] A curing device, which includes:

[0017] - A sliding cross beam, which is used to slide on the movable formwork machine;

[0018] - Two connecting frames, which are respectively arranged at both ends of the sliding cross beam, and spray heads for spraying the upper surface of the box girder are arranged thereon;

[0019] - Two corner frames, which are respectively connected to the two connecting frames, and spray heads for spraying the side surfaces of the box girder are arranged thereon;

[0020] - A horizontal frame, which connects the two corner frames, and spray heads for spraying the bottom of the box girder are arranged thereon;

[0021] At least one winch, which is used to be arranged at the end of the movable formwork machine and is connected to the sliding cross beam to tow and drag the curing device;

[0022] A temperature and humidity sensor, which is used to be arranged on the box girder to detect its temperature and humidity data;

[0023] A controller, which is connected to the curing device, the winch and the temperature and humidity sensor, and adjusts the curing position and the spraying water volume of the curing device through the winch according to the temperature and humidity data.

[0024] On the basis of the above technical solution, it further includes a heating water tank, which is used to supply water to the spray heads through a pipeline, and an electric heating rod is arranged in the heating water tank, and the electric heating rod is used to heat the curing water.

[0025] On the basis of the above technical solution, it further includes a sprayer, which is used to be arranged on the movable formwork machine to provide a moisture preservation environment for the box girder.

[0026] On the basis of the above technical solution, it further includes a slide rail, which is used to be arranged above the movable formwork machine, and pulleys matching the slide rail are arranged below the sliding cross beam.

[0027] Based on the above technical solution, the automatic maintenance system includes two winches, which are respectively used to be arranged at both ends of the movable formwork machine, and the winches are connected to the sliding cross beam to tow and drag the maintenance device.

[0028] Compared with the prior art, the advantages of the present invention are as follows: two connecting frames, two corner frames and a horizontal frame surround the entire box girder, and nozzles for spraying the box girder are provided. Such a design can enable the concrete box girder maintenance device to perform comprehensive spraying maintenance on the box girder in a 360° surrounding manner. The winches arranged at the ends of the movable formwork machine tow and drag the maintenance device to slide on the movable formwork machine. For the temperature and humidity data detected by the temperature and humidity sensors, the controller controls the winches to adjust the maintenance position of the maintenance device and the water spraying amount according to the detected temperature and humidity data. For example, when the humidity at a certain position is detected to be low or the temperature is high, the position of the maintenance device can be adjusted to meet the requirements, which can improve the accuracy of maintenance. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural diagram of a concrete box girder maintenance device in an embodiment of the present invention;

[0031] Figure 2 It is a schematic structural diagram of an automatic maintenance system for a concrete box girder in an embodiment of the present invention.

[0032] In the figure: 1. Maintenance device; 11. Sliding cross beam; 12. Connecting frame; 13. Corner frame; 14. Horizontal frame; 2. Movable formwork machine; 3. Box girder. Detailed Embodiments

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0034] The following will further elaborate on the embodiments of the present invention with reference to the drawings. As Figure 1 and Figure 2As shown in the figure, a concrete box girder curing device of the present invention includes: a sliding cross beam 11, which is used to be slidably arranged on a moving formwork machine 2; it also includes two connecting frames 12, which are respectively arranged at both ends of the sliding cross beam 11, and are provided with nozzles for spraying the upper surface of the box girder 3; it further includes two corner frames 13, which are respectively connected to the two connecting frames 12, and are provided with nozzles for spraying the side surface of the box girder 3; it also includes a horizontal frame 14, which connects the two corner frames 13, and is provided with nozzles for spraying the bottom surface of the box girder 3.

[0035] When using the concrete box girder curing device, when the moving formwork machine 2 moves to pour the next segment, the sliding cross beam 11 is slidably erected on the moving formwork machine 2, and the two corner frames 13 and the horizontal frame 14 are connected through the connecting frames 12 arranged at both ends, so that the two connecting frames 12, the two corner frames 13 and the horizontal frame 14 surround the entire box girder 3. Nozzles for spraying the upper surface of the box girder 3 are arranged at the lower ends of the connecting frames 12, nozzles for spraying the side surface of the box girder 3 are arranged on the connecting frames 12, and nozzles for spraying the bottom surface of the box girder 3 are arranged on the horizontal frame 14. Such a design can enable the concrete box girder curing device to perform comprehensive spray curing on the box girder 3 in a 360° surround, and the sliding cross beam 11 can slide on the moving formwork machine 2, avoiding the problem that the side and bottom surfaces of the box girder are not easy to cure. In addition, this concrete box girder curing device is arranged on the moving formwork machine 2 and can follow the construction progress of the box girder segment, and always follow the moving formwork machine 2 to cure the previously poured upper box girder segment without the need for reinstallation.

[0036] In some optional embodiments, the corner frame 13 is triangular and is used to be arranged on the side surface of the box girder 3, so that two of its sides are respectively located under the flange plate of the box girder 3 and on the side surface of the web of the box girder 3 and are provided with nozzles. In this embodiment, by setting the corner frame 13 to be triangular and making two of its sides be respectively located under the flange plate of the box girder 3 and on the side surface of the web of the box girder 3 and being provided with nozzles, such a design can enable the flange plate and web of the box girder 3 to be sprayed with curing water, so that the box girder 3 can be better cured. In some optional embodiments, it further includes a slide rail, which is used to be arranged above the moving formwork machine 2, and a pulley matching the slide rail is arranged under the sliding cross beam 11.

[0037] In this embodiment, a slide rail is arranged above the moving formwork machine 2, and a pulley matching the slide rail is arranged under the sliding cross beam 11. In the form of the pulley and the slide rail, it is convenient for the sliding cross beam 11 to slide above the moving formwork machine 2, so that the nozzles arranged on the two connecting frames 12, the two corner frames 13 and the horizontal frame 14 surrounding the entire box girder 3 can spray the entire box girder segment.

[0038] In some optional embodiments, the nozzles on the connecting frames 12, the corner frames 13 and the horizontal frame 14 are arranged at intervals of 0.3 m - 0.8 m.

[0039] In this embodiment, the spray heads are arranged on the connecting frame 12, the corner frame 13 and the horizontal frame 14 at intervals of 0.3 m - 0.8 m, which can make the curing water sprayed on the box girder more uniform.

[0040] In some alternative embodiments, the distance between the two corner frames 13 is greater than the width of the two flange plates of the box girder 3, which is 1.5 m - 2.4 m.

[0041] In this embodiment, the distance between the two corner frames 13 is greater than the width of the abdomen of the box girder 3, which is 1 m - 2.4 m. The distance from the spray heads arranged on the corner frames 13 to the abdomen of the box girder 3 can be 0.5 m to 1.2 m, which can make the spraying effect of the spray heads better.

[0042] The distance between the spray heads arranged on the horizontal frame 14 for spraying the bottom of the box girder 3 is 0.5 m - 1 m, which can also achieve uniform spraying of the bottom of the box girder 3.

[0043] In some alternative embodiments, the sliding cross beam 11, the connecting frame 12, the corner frame 13 and the horizontal frame 14 are all made of angle steel welded together. In this embodiment, the structure of the whole device is simple. Angle steel can be used to weld the sliding cross beam 11, the connecting frame 12, the corner frame 13 and the horizontal frame 14. The process is simple, which can improve the work efficiency.

[0044] The present invention also provides an automatic curing system for a concrete box girder, including: a curing device 1, which includes: a sliding cross beam 11, which is used to be slidably arranged on the moving formwork machine 2; two connecting frames 12, which are respectively arranged at both ends of the sliding cross beam 11, and are provided with spray heads for spraying the upper surface of the box girder 3; two corner frames 13, which are respectively connected to the two connecting frames 12, and are provided with spray heads for spraying the side surfaces of the box girder 3; a horizontal frame 14, which connects the two corner frames 13 and is provided with spray heads for spraying the bottom of the box girder 3.

[0045] The automatic curing system further includes at least one winch, which is used to be arranged at the end of the moving formwork machine 2 and is connected to the sliding cross beam 11 to tow the curing device 1; it also includes a temperature and humidity sensor, which is used to be arranged on the box girder 3 to detect its temperature and humidity data; it also includes a controller, which is connected to the curing device 1, the winch and the temperature and humidity sensor, and adjusts the curing position and the spraying water volume of the curing device 1 through the winch according to the temperature and humidity data.

[0046] In this embodiment, two connecting frames 12, two corner frames 13 and a horizontal frame 14 surround the entire box girder 3, and a nozzle for spraying the box girder is provided. Such a design enables the concrete box girder curing device to perform comprehensive spray curing on the box girder 360°. The curing device 1 is towed by a winch provided at the end of the moving formwork machine 2 to slide on the moving formwork machine 2. The temperature and humidity data detected by the temperature and humidity sensor, and the controller controls the winch to adjust the curing position of the curing device 1 and the amount of sprayed water according to the detected temperature and humidity data. For example, when the humidity at a certain position is detected to be low or the temperature is high, the position of the curing device 1 can be adjusted to meet the requirements, which can improve the accuracy of curing.

[0047] In some alternative embodiments, a heating water tank is further included, which is used to supply water to the nozzle through a pipeline. An electric heating rod is provided in the heating water tank, and the electric heating rod is used to heat the curing water.

[0048] In this embodiment, an electric heating rod is provided in the heating water tank to heat the curing water. The water in the heating water tank can be heated first in low-temperature weather and then sprayed through the curing device 1, which can spray the box girder 3 more precisely and enable the system to adapt to a more complex usage environment.

[0049] In some alternative embodiments, a sprayer is further included, which is used to provide a moisturizing environment for the box girder 3 on the moving formwork machine 2. In this embodiment, the sprayer is provided at the end of the moving formwork machine 2 to provide a moisturizing environment for better curing of the box girder 3.

[0050] In some alternative embodiments, a slide rail is further included, which is used to be provided above the moving formwork machine 2, and pulleys matching the slide rail are provided below the sliding cross beam 11.

[0051] In this embodiment, a slide rail is provided above the moving formwork machine 2, and pulleys matching the slide rail are provided below the sliding cross beam 11. The sliding cross beam 11 can be conveniently slid above the moving formwork machine 2 in the form of pulleys and slide rails, so that the nozzles provided on the two connecting frames 12, two corner frames 13 and the horizontal frame 14 surrounding the entire box girder 3 can spray the entire box girder segment.

[0052] In some alternative embodiments, the automatic curing system includes two winches, which are respectively used to be provided at both ends of the moving formwork machine 2, and the winches are connected to the sliding cross beam 11 to tow the curing device 1.

[0053] In this embodiment, two winches are respectively arranged at both ends of the moving formwork machine 2, and the position of the maintenance device 1 is adjusted bidirectionally through the winches, which is convenient and fast. Of course, in other embodiments, one winch can also be set at the end of the moving formwork machine 2, and a fixed pulley is arranged at the other end for steering, which can also realize the bidirectional adjustment of the position of the maintenance device 1 above the moving formwork machine 2.

[0054] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. Unless otherwise clearly specified and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0055] It should be noted that in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0056] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An automatic curing system for a concrete box girder, characterized in that, Comprising: A curing device (1), which comprises: - A sliding cross beam (11) for sliding on a moving formwork machine (2); - Two connecting frames (12) respectively arranged at both ends of the sliding cross beam (11), and spray nozzles for spraying the upper surface of the box girder (3) are provided thereon; - Two corner frames (13) respectively connected to the two connecting frames (12), and spray nozzles for spraying the side surface of the box girder (3) are provided thereon; - A horizontal frame (14) connecting the two corner frames (13), and spray nozzles for spraying the bottom of the box girder (3) are provided thereon; At least one winch for being arranged at the end of the moving formwork machine (2) and connected to the sliding cross beam (11) to tow and drag the curing device (1); A slide rail for being arranged above the moving formwork machine (2), and pulleys matching the slide rail are provided below the sliding cross beam (11); A temperature and humidity sensor for being arranged on the box girder (3) to detect its temperature and humidity data; A controller connected to the curing device (1), the winch and the temperature and humidity sensor, and adjusting the curing position and the spraying water volume of the curing device (1) through the winch according to the temperature and humidity data; Two winches respectively for being arranged at both ends of the moving formwork machine (2), and the winches are connected to the sliding cross beam (11) to tow and drag the curing device (1).

2. The automatic curing system for a concrete box girder according to claim 1, characterized in that: The corner frame (13) is triangular and is used for being arranged on the side surface of the box girder (3) so that two of its sides are respectively located below the flange plate of the box girder (3) and on the side surface of the web of the box girder (3), and spray nozzles are provided.

3. The automatic curing system for a concrete box girder according to claim 1, wherein: The spray nozzles on the connecting frame (12), the corner frame (13) and the horizontal frame (14) are arranged at intervals of 0.3 m - 0.8 m.

4. The automatic curing system for a concrete box girder according to claim 1, characterized in that: The distance between the two corner frames (13) is greater than the width between the two flange plates of the box girder (3) by 1 m - 2.4 m.

5. The automatic curing system for a concrete box girder according to claim 1, characterized in that: It further comprises a heating water tank for supplying water to the spray nozzles through a pipeline, and an electric heating rod is arranged in the heating water tank, and the electric heating rod is used for heating the curing water.

6. The automatic curing system for a concrete box girder according to claim 1, characterized in that: It further comprises a sprayer for being arranged on the moving formwork machine (2) to provide a moisture-preserving environment for the box girder (3).

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