Intelligent maintenance system for cast-in-place box girder constructed through cantilever method

Abstract

The invention provides an intelligent maintenance system for a cast-in-place box girder constructed through a cantilever method, and belongs to the technical field of intelligent maintenance systems of box girders. Comprising a box girder, the periphery of the top surface of the box girder is covered with a rectangular frame assembly, walking frame assemblies are arranged on the left side and the right side of the rectangular frame assembly respectively, bottom supporting frame assemblies are arranged at the bottoms of the two walking frame assemblies, and the inner side surfaces of all the bottom supporting frame assemblies and the walking frame assemblies are covered with transverse moving assemblies; and box girder bottom spraying assemblies are connected among all the transverse moving assemblies. By arranging the temperature and humidity sensor, whether the beam part needs to be maintained or not is detected, the flow of the nozzle is controlled, in addition, the spraying equipment is a self-adaptive angle nozzle, and the spraying angle of the nozzle can be automatically adjusted according to the water flow pressure and the shape of a target object; a pressure sensing device and an angle adjusting mechanism driven by a micro motor are installed in the spray head when the water flow pressure changes.

Description

Technical Field

[0001] The invention relates to the technical field of intelligent maintenance systems for box girders, and in particular to an intelligent maintenance system for cast-in-place box girders constructed using a cantilever method. Background Art

[0002] In bridge construction, box girders are important load-bearing structural components. The quality of their maintenance after concrete pouring directly affects the strength, durability and overall performance of the box girders. Traditional box girder maintenance methods mainly include natural maintenance and artificial watering maintenance. Natural maintenance depends on environmental humidity and temperature. Under adverse climatic conditions such as dryness, high temperature or strong winds, it is difficult to ensure that the concrete surface is always in a suitable moist state, which can easily lead to excessive water loss of concrete, cracks, insufficient strength and other quality problems. Artificial watering maintenance requires a lot of manpower input, and the maintenance effect is greatly affected by the standardization, timeliness and continuity of manual operation. It is difficult for workers to accurately control the frequency, water volume and uniformity of watering, and local over-wetting or over-drying may occur. At the same time, artificial maintenance is more difficult to implement at night or under severe weather conditions, and it is difficult to ensure uninterrupted maintenance work.

[0003] The traditional box girder maintenance method mainly relies on manual testing of temperature and humidity, and judges whether to carry out internal water supply cooling and surface water sprinkling for moisturizing based on this. However, this method is inefficient and the process is not standardized. In addition, improper maintenance often leads to low concrete strength and temperature (shrinkage) cracks, affecting the normal service life of concrete and causing huge economic losses. The use of intelligent equipment for automatic maintenance can distinguish the dryness and wetness of the box girder surface for accurate spraying, which is more efficient and reduces labor costs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an intelligent maintenance system for cast-in-place box girders constructed by cantilever method to solve the problem that the existing traditional box girder maintenance method mainly relies on manual testing of temperature and humidity, and judges whether to perform internal water supply cooling and surface water sprinkling for moisturizing based on this. However, this method is inefficient and the process is not standardized. In addition, improper maintenance often leads to low concrete strength and temperature (shrinkage) cracks, which affects the normal service life of the concrete and causes huge economic losses.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An intelligent maintenance system for cast-in-place box beams constructed by a cantilever method, comprising a box beam, wherein the top surface of the box beam is covered with a rectangular frame assembly on all sides, a walking frame assembly is respectively arranged on the left and right sides of the rectangular frame assembly, a bottom supporting frame assembly is arranged at the bottom of the two walking frame assemblies, the inner surfaces of all the bottom supporting frame assemblies and the walking frame assembly are covered with a transverse movement assembly, a box beam bottom spray assembly is connected between all the transverse movement assemblies, a spray control end assembly is arranged at the top of the rectangular frame assembly, spray equipment is respectively arranged at the output ends of the two spray control end assemblies and the top surface of the box beam bottom spray assembly, humidity sensors are respectively arranged at the four corners of the top surface of the rectangular frame assembly, the spray equipment comprises a hollow cylinder, a pressure sensor is arranged inside the hollow cylinder, a spray pipe is connected to one end of the pressure sensor, a spray head is connected to one end of the spray pipe, micro motors are respectively connected to the left and right sides of the surface between the two spray heads and the hollow cylinder, and a telescopic rod is arranged at the output end of each of the micro motors.

[0007] Optionally, the rectangular frame assembly includes two short square steels, the left and right ends of the two short square steels are respectively connected to rectangular steels, and rectangular openings are respectively opened at the left and right edge of each of the short square steels.

[0008] Optionally, a slide groove is provided inside each of the rectangular steels, a plurality of slide teeth are arranged on the inner surface of the slide groove, and a wheel groove is covered on the top of each of the rectangular steels.

[0009] Optionally, the bottom support frame assembly includes two rectangular frames, and mounting rods are respectively connected between the front and rear ends of the two rectangular frames.

[0010] Optionally, the walking frame assembly includes a rectangular protection frame, the left and right side surfaces of the rectangular protection frame are respectively covered with reinforcement railings, and the bottom of the rectangular protection frame is provided with a plurality of reinforced walking steels in an arranged manner.

[0011] Optionally, the transverse movement assembly includes a sliding rod, and the left and right ends of the sliding rod are respectively connected to limit blocks.

[0012] Optionally, the spray control end assembly includes a workbench, a control end system box is provided on the top surface of the workbench near the right edge, pulleys are provided on the left and right ends of the workbench near the bottom, and the front surface of the workbench is covered with a slide bar near the top edge.

[0013] Optionally, a sliding block is provided on one side surface of the sliding bar, a threaded rod penetrates the interior of the sliding block, one end of the threaded rod is connected to a gear, and one end of the gear is connected to the output end of the rotating motor.

[0014] Optionally, the box beam bottom spray assembly comprises a U-shaped frame, and a front end surface of the U-shaped frame is provided with water inlets on both left and right sides, respectively, and a water pipe is connected to the outer side of each water inlet.

[0015] Optionally, one end of each of the water pipes is connected to the output end of a water pump, a water tank is connected to the bottom of the water pump, and two transverse sliding grooves are arranged on the left and right side surfaces of the U-shaped frame.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by setting up a temperature and humidity sensor, it is detected whether the beam part needs maintenance and the nozzle flow rate is controlled. In addition, the spraying equipment is an adaptive angle nozzle, which can automatically adjust the spray angle according to the water flow pressure and the shape of the target object. A pressure sensing device and an angle adjustment mechanism driven by a micro motor are installed inside the nozzle. When the water flow pressure changes, such as at different heights or at different distances from the water pump, the pressure sensing device will transmit a signal to the controller, and the controller will instruct the micro motor to adjust the spray angle of the nozzle. When facing objects of irregular shapes, the nozzle can automatically change the angle according to the curvature and distance of the object surface, ensuring that the water flow is always sprayed vertically or nearly vertically to the surface of the object, thereby improving the effectiveness and uniformity of the spray.

[0018] By setting the adaptive angle sprinkler, it can also be connected to the intelligent control system. According to the preset sprinkler program and the three-dimensional model data of the target object, the angle can be dynamically adjusted during the sprinkler process. For example, when a complex sculpture is sprinkled and maintained, the sprinkler can automatically adjust the angle along the sculpture's contour curve to achieve precise 360-degree full coverage sprinkler, which not only ensures the maintenance effect, but also avoids the waste of water resources. The inner and outer sides of the web of the cast-in-place box girder, the top surface of the box girder and the bottom surface of the box girder are sprinkled and maintained at intervals through automatic sprinkler maintenance to ensure that all concrete surfaces of the cantilevered box girder remain moist during the maintenance period, with good maintenance effects. The intelligent maintenance system reduces labor costs, improves maintenance efficiency, and reduces problems such as low concrete strength and temperature cracks caused by improper maintenance. The system has a simple structure and is easy to install and maintain. It is suitable for various cantilever construction cast-in-place box girder maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0020] Figure 1 The three-dimensional structural diagram of the intelligent maintenance system for cast-in-place box girders constructed using the cantilever method;

[0021] Figure 2 It is a schematic diagram of the box girder structure;

[0022] Figure 3 This is a schematic diagram of the humidity sensor structure;

[0023] Figure 4 It is a schematic diagram of the rectangular frame component structure;

[0024] Figure 5 is a schematic diagram of the structure of the bottom support frame assembly;

[0025] Figure 6 It is a schematic diagram of the structure of the walking frame assembly;

[0026] Figure 7 It is a schematic diagram of the structure of the transverse movement component;

[0027] Figure 8 It is a schematic diagram of the structure of the spray control end component;

[0028] Fig. 9 This is a schematic diagram of the structure of the spray assembly at the bottom of the box beam;

[0029] Fig.10 for Fig. 9 A magnified schematic diagram;

[0030] Fig.11 This is a schematic diagram of the spray equipment structure.

[0031] [reference numerals]

[0032] 1. Box beam; 2. Rectangular frame assembly; 201. Short square steel; 202. Rectangular opening; 203. Rectangular steel; 204. Slide; 205. Slide tooth; 206. Wheel groove; 3. Travel frame assembly; 301. Rectangular protection frame; 302. Reinforced railing; 303. Reinforced travel steel; 4. Bottom support frame assembly; 401. Rectangular frame; 402. Mounting rod; 5. Box beam bottom spray assembly; 501. U-shaped frame; 502. Water inlet; 503. Water pipe; 504. Water pump; 505. Water tank ; 506, transverse slide; 6, spray control end assembly; 601, workbench; 602, control end system box; 603, pulley; 604, slide bar; 605, slider; 606, threaded rod; 607, gear; 608, rotating motor; 7, spray equipment; 701, hollow cylinder; 702, pressure sensor; 703, spray pipe; 704, spray head; 705, micro motor; 706, telescopic rod; 8, humidity sensor; 9, transverse assembly; 901, slide bar; 902, limit block.

[0033] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0034] The following is a detailed description of an intelligent maintenance system for cast-in-place box girders constructed by cantilever method provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0035] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0036] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0037] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0038] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0039] like Figures 1 to 7 As shown, an embodiment of the present invention provides an intelligent maintenance system for cast-in-place box girders constructed by cantilever method, comprising a box girder 1, the top surface of the box girder 1 is covered with a rectangular frame assembly 2 on all sides, the left and right sides of the rectangular frame assembly 2 are respectively provided with a walking frame assembly 3, the bottoms of the two walking frame assemblies 3 are provided with a bottom support frame assembly 4, the inner surfaces of all the bottom support frame assemblies 4 and the walking frame assemblies 3 are covered with a transverse movement assembly 9, a box girder bottom spray assembly 5 is connected between all the transverse movement assemblies 9, a spray control end assembly 6 is provided on the top of the rectangular frame assembly 2, the output ends of the two spray control end assemblies 6 and the top surface of the box girder bottom spray assembly 5 are respectively provided with spray equipment 7, the top surface of the rectangular frame assembly 2 is respectively provided with humidity sensors 8 at the four corners, the rectangular frame assembly 2 comprises two short square steels 201, the two short square steels 201 The left and right ends are respectively connected with rectangular steels 203, and rectangular openings 202 are respectively opened at the left and right edges of each short square steel 201. A slide groove 204 is opened inside each rectangular steel 203, and the inner surface of the slide groove 204 is arranged with a plurality of sliding teeth 205. The top of each rectangular steel 203 is covered with a wheel groove 206. The bottom support frame assembly 4 includes two rectangular frames 401, and the front and rear ends of the two rectangular frames 401 are respectively connected with mounting rods 402. The walking frame assembly 3 includes a rectangular protection frame 301, and the left and right side surfaces of the rectangular protection frame 301 are respectively covered with reinforced railings 302, and the bottom of the rectangular protection frame 301 is arranged with a plurality of reinforced walking steels 303. The transverse movement assembly 9 includes a sliding rod 901, and the left and right ends of the sliding rod 901 are respectively connected to the limiting block 902.

[0040] The spraying equipment 7 is evenly distributed to the spraying control end assembly 6 and the spraying assembly 5 at the bottom of the box girder, and automatic spraying is performed on the inner and outer sides of the web of the cast-in-place box girder, the top surface of the box girder and the bottom surface of the box girder for interval spraying and maintenance, ensuring that all concrete surfaces of the suspended box girder always remain moist during the maintenance period, with good maintenance effect. The spraying control end assembly 6 maintains the top surface of the box girder, and the surface of the U-shaped frame 501 is provided with spraying equipment 7 at different angles.

[0041] By combining the transverse movement components 9 respectively arranged on the inner side of the walking frame component 3 and the inner side of the bottom support frame component 4 with the transverse movement slide groove 506, the box beam bottom spray component 6 is driven to move back and forth at the bottom of the box beam to spray the bottom and inner and outer sides of the box beam in all directions. The drive used is a linear module drive, and its principle is: the linear module is composed of components such as a motor, a guide rail, a slider, a ball screw or a synchronous belt. The motor drives the ball screw or the synchronous belt to move, driving the slider to move linearly on the guide rail. The slide rod is connected to the slider to realize transverse movement. The linear module has high integration, high precision, and smooth movement. It is widely used in various automation equipment and precision instruments, such as dispensing machines and placement machines in electronic equipment manufacturing.

[0042] The rectangular openings 202 at the left and right ends of the short square steel 201 can facilitate the passage of water pipes to provide water to the spray equipment 7 connected to the spray control end assembly 6. The control end system box 602 is the main control end of the overall intelligent system. In conjunction with the existing wireless control and three-dimensional model technology, a three-dimensional scanner is set inside the humidity sensor 8, which can transmit the three-dimensional model data of the overall box beam to the control end, and cooperate with the intelligent system for precise spraying.

[0043] like Figures 8 to 11 As shown, the spraying device 7 includes a hollow cylinder 701, a pressure sensor 702 is arranged inside the hollow cylinder 701, one end of the pressure sensor 702 is connected to a spray pipe 703, one end of the spray pipe 703 is connected to a spray head 704, micro motors 705 are connected to the left and right sides of the surface between the two spray heads 704 and the hollow cylinder 701, and a telescopic rod 706 is arranged at the output end of each micro motor 705. The spray control end assembly 6 includes a workbench 601, a control end system box 602 is arranged at the right edge of the top surface of the workbench 601, pulleys 603 are arranged at the bottom of the left and right ends of the workbench 601, and the front surface of the workbench 601 is covered with a A slide bar 604, a slider 605 is provided on one side surface of the slide bar 604, a threaded rod 606 penetrates the interior of the slider 605, one end of the threaded rod 606 is connected to a gear 607, one end of the gear 607 is connected to the output end of the rotating motor 608, the box beam bottom spray assembly 5 includes a U-shaped frame 501, the front end surface of the U-shaped frame 501 is provided with water inlets 502 on the left and right sides respectively, each water inlet 502 is connected to a water pipe 503 on the outside, one end of each water pipe 503 is connected to the output end of the water pump 504, the bottom of the water pump 504 is connected to a water tank 505, and the left and right side surfaces of the U-shaped frame 501 are respectively provided with two transverse sliding grooves 506 in an arranged form.

[0044] The nozzle that automatically adjusts the spray angle according to the water flow pressure and the shape of the target object through the spray device 7 has a pressure sensing device and an angle adjustment mechanism driven by a micro motor installed inside the nozzle. When the water flow pressure changes, for example, at different heights or at different distances from the water pump, the pressure sensing device will transmit a signal to the controller, and the controller will instruct the micro motor to adjust the spray angle of the nozzle. When facing an object of irregular shape, the nozzle can automatically change the angle according to the curvature and distance of the object surface to ensure that the water flow is always sprayed vertically or approximately vertically to the surface of the object, thereby improving the effectiveness and uniformity of the spray. This adaptive angle nozzle can also be connected to an intelligent control system to dynamically adjust the angle during the spraying process according to a preset spraying program and the three-dimensional model data of the target object. For example, when spraying and maintaining a complex sculpture, the nozzle can automatically adjust the angle along the contour curve of the sculpture to achieve accurate 360-degree full coverage spraying, which not only ensures the maintenance effect but also avoids the waste of water resources.

[0045] The working principle of the technical solution provided by the present invention is as follows:

[0046] First, by setting up a temperature and humidity sensor, it is detected whether the beam part needs maintenance and the nozzle flow rate is controlled. In addition, the spraying device 7 is an adaptive angle nozzle, which can automatically adjust the spray angle according to the water flow pressure and the shape of the target object. A pressure sensing device and an angle adjustment mechanism driven by a micro motor are installed inside the nozzle. When the water flow pressure changes, such as at different heights or at different distances from the water pump, the pressure sensing device will transmit a signal to the controller, and the controller will instruct the micro motor to adjust the spray angle of the nozzle. When facing an irregularly shaped object, the nozzle can automatically change the angle according to the curvature and distance of the object surface to ensure that the water flow is always sprayed vertically or approximately vertically to the surface of the object, thereby improving the effectiveness and uniformity of the spray. Then, by setting an adaptive angle nozzle, it can also be combined with an intelligent The control system is connected to the system and dynamically adjusts the angle during the spraying process according to the preset spraying program and the 3D model data of the target object. For example, when spraying and curing a complex sculpture, the nozzle can automatically adjust the angle along the contour curve of the sculpture to achieve accurate 360-degree full-coverage spraying, which not only ensures the curing effect but also avoids the waste of water resources. The inner and outer sides of the web of the cast-in-place box girder, the top surface of the box girder and the bottom surface of the box girder are sprayed and cured at intervals through automatic spraying to ensure that all concrete surfaces of the cantilevered box girder are always kept moist during the curing period, with good curing effect. The intelligent curing system reduces labor costs, improves curing efficiency, and reduces problems such as low concrete strength and temperature cracks caused by improper curing. The system has a simple structure, is easy to install and maintain, and is suitable for the curing of various cast-in-place box girders constructed by the cantilever method.

[0047] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An intelligent maintenance system for cast-in-place box beams constructed by cantilever method, characterized in that: It comprises a box beam, the top surface of the box beam is covered with a rectangular frame assembly on all sides, the left and right sides of the rectangular frame assembly are respectively provided with a walking frame assembly, the bottom of the two walking frame assemblies are provided with a bottom support frame assembly, the inner surfaces of all the bottom support frame assemblies and the walking frame assembly are covered with a transverse movement assembly, a box beam bottom spray assembly is connected between all the transverse movement assemblies, a spray control end assembly is provided on the top of the rectangular frame assembly, the output ends of the two spray control end assemblies and the top surface of the box beam bottom spray assembly are respectively provided with spray equipment, and the top surface of the rectangular frame assembly is respectively provided with humidity sensors at the four corners; The spraying equipment includes a hollow cylinder, a pressure sensor is arranged inside the hollow cylinder, one end of the pressure sensor is connected to a spray pipe, one end of the spray pipe is connected to a spray head, micro motors are respectively connected to the left and right sides of the surface between the two spray heads and the hollow cylinder, and a telescopic rod is arranged at the output end of each micro motor.

2. The intelligent maintenance system for cantilever cast-in-place box beams according to claim 1 is characterized in that: The rectangular frame assembly includes two short square steels, the left and right ends of the two short square steels are respectively connected to rectangular steels, and the left and right edges of each short square steel are respectively provided with rectangular openings.

3. The intelligent maintenance system for cantilever cast-in-place box beams according to claim 2 is characterized in that: A slide groove is provided inside each rectangular steel, and a plurality of slide teeth are arranged on the inner surface of the slide groove. The top of each rectangular steel is covered with a wheel groove.

4. The intelligent maintenance system for cantilever cast-in-place box beams according to claim 1 is characterized in that: The bottom support frame assembly comprises two rectangular frames, and mounting rods are respectively connected between the front and rear ends of the two rectangular frames.

5. The intelligent maintenance system for cantilever cast-in-place box beams according to claim 1 is characterized in that: The walking frame assembly comprises a rectangular protection frame, the left and right side surfaces of the rectangular protection frame are respectively covered with reinforcement railings, and the bottom of the rectangular protection frame is provided with a plurality of reinforcement walking steels in an arranged form.

6. The intelligent maintenance system for cantilever cast-in-place box beams according to claim 1 is characterized in that: The transverse movement assembly comprises a slide bar, and the left and right ends of the slide bar are respectively connected to limit blocks.

7. The intelligent maintenance system for cantilever cast-in-place box beams according to claim 1 is characterized in that: The spray control end assembly includes a workbench, a control end system box is arranged on the top surface of the workbench near the right edge, pulleys are arranged on the left and right ends of the workbench near the bottom, and a slide bar is covered on the front surface of the workbench near the top edge.

8. The intelligent maintenance system for cantilever cast-in-place box beams according to claim 7 is characterized in that: A sliding block is provided on one side surface of the slide bar, a threaded rod penetrates the interior of the sliding block, one end of the threaded rod is connected to a gear, and one end of the gear is connected to the output end of the rotating motor.

9. The intelligent maintenance system for cantilever cast-in-place box beams according to claim 1 is characterized in that: The box beam bottom spray assembly comprises a U-shaped frame, and a front end surface of the U-shaped frame is provided with water inlets on the left and right sides respectively, and a water pipe is connected to the outer side of each water inlet.

10. The intelligent maintenance system for cantilever cast-in-place box beams according to claim 9, characterized in that: One end of each of the water pipes is connected to the output end of the water pump, the bottom of the water pump is connected to a water tank, and two transverse sliding grooves are arranged on the left and right side surfaces of the U-shaped frame.

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