Intelligent railway maintenance station and maintenance method

Abstract

The invention provides an intelligent railway maintenance station which comprises a maintenance shed, a maintenance system, a steam system and an intelligent monitoring system, and the maintenance shed comprises a maintenance station wall surface and rainproof cloth and is used for being matched with the maintenance station wall surface to form a closed space; the maintenance system comprises a bottom plate spraying device, a web spraying device and an inner cavity atomization device, and the intelligent monitoring system comprises a data acquisition module, a control module and a data display module. The invention further discloses a box girder maintenance and winter construction method based on the intelligent railway maintenance station. By isolating interference of the external environment on maintenance, a closed maintenance environment is provided for beam body maintenance, by means of cooperation of the intelligent monitoring system, the maintenance system and the steam system, real-time monitoring and fine regulation and control of the temperature and humidity in the maintenance station are achieved, and it is ensured that the maintenance process is highly intelligent, fine and automatic. Through cooperation of the steam system and the intelligent monitoring system, construction conditions of tensioning, grouting and anchor sealing in winter can be created, and construction of tensioning, grouting and anchor sealing in winter is achieved.

Description

Technical Field

[0001] This invention relates to the field of concrete curing and construction technology for precast box girders in railways, specifically to an intelligent railway maintenance station and maintenance method. Background Technology

[0002] Precast box girders are a common type of beam structure used in railway bridge construction. They are prefabricated in a factory or on the construction site and then transported to the bridge site for erection.

[0003] Concrete curing of precast box girders for railways is a core aspect of ensuring the structural performance, construction safety, and service life of these girders, directly determining whether they can achieve their designed load-bearing capacity, crack resistance, and durability. During the concrete pouring and curing process, proper curing can effectively prevent harmful cracks from appearing in the concrete. Traditional box girder curing is mainly carried out in open-air environments, and whether it's spraying or atomization, the control of temperature and humidity during the curing process is not precise enough, easily leading to potential defects. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a railway intelligent maintenance station to solve the problem that the control of temperature and humidity during the maintenance process is not precise enough in the prior art.

[0005] To address the aforementioned problems, this invention provides a railway intelligent maintenance station for maintaining precast railway box girders after pouring, characterized by comprising:

[0006] The maintenance shed shown includes a maintenance station wall and a rainproof cloth. The maintenance station wall is arranged around the precast box girder of the railway to be maintained, and the rainproof cloth is connected to the top of the maintenance room wall.

[0007] The maintenance system includes a bottom plate spraying device, a web plate spraying device, and an inner cavity atomizing device. The bottom plate spraying device is located below the floor of the precast railway box girder to be maintained, the web plate spraying device is located below the web plate of the precast railway box girder to be maintained, and the inner cavity atomizing device is located inside the inner box of the precast railway box girder to be maintained.

[0008] The system includes an intelligent monitoring system, comprising a data acquisition module, a control module, and a data display module. The data acquisition module collects temperature and humidity information from various points on the precast railway box girder to be maintained and transmits the collected information to the control module. The control module is connected to the maintenance system and controls its operation. The control module receives and analyzes the data collected by the data acquisition module and controls the maintenance system based on received control commands or analysis results. The data display module is connected to the control module and displays the data collected by the data acquisition module to the user.

[0009] The above-mentioned intelligent railway maintenance station is characterized in that: the wall of the maintenance station includes wall truss columns and color steel plates, the number of wall truss columns is multiple, the multiple wall truss columns are arranged at intervals, the multiple wall truss columns are all vertically set on the foundation ground, and the lower ends of the multiple wall truss columns are fixedly connected to the foundation ground, the color steel plates are set on one side of the wall truss columns, and the color steel plates are fixedly connected to the wall truss columns.

[0010] The above-mentioned intelligent railway maintenance station is characterized in that: the maintenance station wall includes a first wall, a second wall, a third wall, and a fourth wall, which are connected end to end to form a rectangular space. The first wall and the third wall are arranged opposite each other. A first entrance is provided on the first wall, and an outward-opening first entrance door is installed on the first entrance. The top of the first entrance door is flush with the top of the first wall, and a rainproof cloth is provided on the top of the first entrance door. A second entrance is provided on the third wall, and an outward-opening second entrance door is installed on the second entrance. The structure of the second entrance door is the same as that of the first entrance door.

[0011] The above-mentioned intelligent railway maintenance station is characterized in that: an observation window is provided on the second wall, and the observation window is made of tempered glass made of transparent material.

[0012] The aforementioned intelligent railway maintenance station is characterized by: multiple bottom plate spraying devices, which are evenly spaced at the bottom of the precast railway box girder to be maintained; multiple web plate spraying devices, which are evenly spaced below the web of the precast railway box girder to be maintained; and multiple internal cavity atomizing devices, which are sequentially spaced within the internal cavity of the precast railway box girder to be maintained.

[0013] The above-mentioned intelligent railway maintenance station is characterized in that: the maintenance system further includes a main water supply pipeline and a connecting hose, and the bottom plate spraying device, the web plate spraying device and the inner cavity atomizing device are all connected to the main water supply pipeline through the connecting hose;

[0014] The maintenance system also includes a steam generator and a water storage tank. Both the steam generator and the water storage tank are located inside the maintenance shed, near the wall of the maintenance station. The steam generator is connected to the water storage tank via a pipeline.

[0015] The above-mentioned intelligent railway maintenance station is characterized in that: the base plate spraying device includes a movable base, a bracket, a spray head, a spray head rotation drive, and a pressure control pump. One end of the bracket is fixedly connected to the movable base. The spray head and the spray head rotation drive are both installed on the other end of the bracket. The spray head rotation drive is fixedly connected to the other end of the bracket. The output end of the spray head rotation drive is connected to the spray head to drive the spray head to rotate. The pressure control pump is installed on the movable base. The outlet of the pressure control pump is connected to the spray head through a hose, and the inlet of the pressure control pump is connected to a connecting hose.

[0016] The above-mentioned intelligent railway maintenance station is characterized in that: the data acquisition module includes multiple cameras and multiple temperature and humidity sensors; the multiple cameras are arranged at intervals inside the maintenance shed to collect video information of the precast railway box girders to be maintained and the maintenance system inside the maintenance shed; the multiple temperature and humidity sensors are arranged at intervals inside and outside the maintenance shed to detect the temperature and humidity information inside and outside the maintenance shed.

[0017] The above-mentioned intelligent railway maintenance station is characterized in that: the intelligent monitoring system further includes a data transmission alarm module for transmitting data and alarms, and the control module is connected to the data transmission alarm module for transmitting detection information, control information and alarm information to the data transmission alarm module.

[0018] This invention also provides a method for the maintenance and winter tensioning, grouting, and anchoring of precast railway box girders. The method is characterized by being based on a railway intelligent maintenance station and includes the following steps:

[0019] Step 1: Move the precast railway box girder to be cured into the curing shed. The intelligent monitoring system will work to determine the temperature and humidity conditions. If they are not up to standard, the curing system will be adjusted to ensure that the temperature and humidity in the curing shed are always at the optimal level. Then, curing or winter construction will be carried out. After the beam curing construction is completed, the next process will begin.

[0020] Step 2: Tensioning operation. First, open the doors on both sides, then drive the tensioning vehicle in and adjust its position. After the preparations are completed, the tensioning operation can begin. After the beam tensioning operation is completed, proceed to the next step.

[0021] Step 3: Grouting Operation. Before grouting, the temperature inside the intelligent curing station must be adjusted to ensure that the ambient temperature and beam temperature meet the grouting requirements. Then, install the grouting sealing cover, park the grouting truck next to the intelligent curing station, and connect the grouting pipe through the small door of the curing station to begin the grouting operation. After completing the grouting operation, the door of the intelligent curing station must be closed immediately, and then the curing work for the anchor concrete can begin. By adjusting the temperature and humidity inside the intelligent curing station, the curing quality is ensured to meet standards, preventing the formation of anchor cracks.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. This invention constructs a closed space suitable for box girders through a curing shed, which effectively improves the problem of imprecise temperature and humidity control in open-air curing.

[0024] 2. This invention can reduce the impact of low temperatures in winter on tension grouting and anchor sealing construction, and significantly reduce the impact of winter construction on the construction progress.

[0025] 3. This invention eliminates the reliance on manual labor in traditional maintenance and successfully achieves a high degree of intelligence in the maintenance process.

[0026] 4. This invention uses an intelligent monitoring system to comprehensively control and record the maintenance process, ensuring the traceability of the maintenance process.

[0027] The invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 This is a cross-sectional view of a railway intelligent maintenance station in an embodiment of the present invention.

[0030] Figure 2 This is a top view of a railway intelligent maintenance station in an embodiment of the present invention.

[0031] Figure 3 for Figure 1 Enlarged view of point A.

[0032] Figure 4 This is a partial sectional view of the wall of the maintenance station in an embodiment of the present invention.

[0033] Figure 5 This is a diagram showing the installation position of the observation window on the wall of the maintenance station in an embodiment of the present invention.

[0034] Figure 6 This is a schematic block diagram showing the connection of the control module in an embodiment of the present invention.

[0035] Figure 7 This is a layout diagram of the maintenance system in an embodiment of the present invention.

[0036] Figure 8 This is a layout diagram of the spraying device for the bottom slab of the precast railway box girder to be maintained in an embodiment of the present invention.

[0037] Figure 9 This is a three-dimensional structural diagram of the base plate spraying device in an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 10—Maintenance shed; 11—Maintenance station wall; 11-1—Wall truss column;

[0040] 11-2—Corrugated steel plate; 11-3—First entrance / exit; 11-4—First entrance / exit gate;

[0041] 11-5—Second entrance / exit; 11-6—Second entrance / exit gate; 11-7—Observation window;

[0042] 12—and rainproof cloth; 20—curing system; 21—base plate spraying device;

[0043] 21-1—Mobile base; 21-2—Bracket; 21-3—Spray head;

[0044] 21-4—Spray head rotation drive; 21-5—Pressure control pump; 22—Branch spray device;

[0045] 23—Inner cavity atomizing device; 24—Main water supply pipe; 25—Connecting hose;

[0046] 26—Steam generator; 27—Water storage tank; 30—Intelligent monitoring system;

[0047] 31—Data acquisition module; 32—Control module; 33—Data display module;

[0048] 34—Data transmission alarm module; 100—Precast railway box girder to be maintained. Detailed Implementation

[0049] Embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the invention. It should be understood that the accompanying drawings and embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the invention.

[0050] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this application are used only to distinguish different devices, modules, or units, and are not used to define the order of functions performed by these devices, modules, or units or their interdependencies.

[0051] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0052] Due to the large volume of box girders, traditional box girder curing is mainly carried out in open-air environments. However, whether using spraying or atomization, the control of temperature and humidity during the curing process is not precise enough. To address the problems in this existing technology, this embodiment provides a railway intelligent curing station. It is used to cure the precast railway box girders 100 after pouring.

[0053] like Figures 1 to 8 As shown, the railway intelligent maintenance station includes a maintenance shed 10, a maintenance system 20, and an intelligent monitoring system 30.

[0054] The curing shed 10 includes a curing station wall 11 and a rainproof tarpaulin 12. The curing station wall 11 is arranged around the precast railway box girder 100 to be cured, and the rainproof tarpaulin 12 is connected to the top of the curing station wall 11. The overall dimensions of the curing shed 10 are 34.90 meters × 26.73 meters × 4.3 meters, which can accommodate two box girders simultaneously. The two box girders are placed side by side, and the gap between the two box girders is covered with the rainproof tarpaulin. After the precast railway box girder 100 to be cured is placed in the curing shed 10, the other end of the rainproof tarpaulin 12 at the top of the curing station wall 11 is placed over the precast railway box girder 100 to be cured, so that the precast railway box girder 100 to be cured, the curing station wall 11, and the rainproof tarpaulin 12 form a closed space. This curing shed 10 effectively isolates the external environment from interference with the curing process, providing a closed curing environment for the beam.

[0055] The maintenance system 20 is used to spray water and mist onto the precast railway box girder 100 to be maintained, so as to ensure the surface humidity of the precast railway box girder 100 and the temperature of the enclosed space. The maintenance system 20 includes a bottom plate spraying device 21, a web plate spraying device 22, and an inner cavity atomizing device 23. The bottom plate spraying device 21 is located below the floor of the precast railway box girder 100, the web plate spraying device 22 is located below the web plate of the precast railway box girder 100, and the inner cavity atomizing device 23 is located inside the inner box of the precast railway box girder 100.

[0056] The intelligent monitoring system 30 includes a data acquisition module 31, a control module 32, and a data display module 33. The data acquisition module 31 collects temperature and humidity information from various points on the precast railway box girder 100 to be maintained and transmits the collected information to the control module 32. The control module 32 is connected to the maintenance system 20 and controls the operation of the maintenance system 20. The control module 32 receives and analyzes the data collected by the data acquisition module 31 and controls the maintenance system 20 according to received control commands or analysis results. The data display module 33 is connected to the control module 32 and displays the data collected by the data acquisition module 31 to the user. The intelligent monitoring system 30 is the core of the entire maintenance system, responsible for collecting and analyzing data from the data acquisition module 31, covering information such as temperature and humidity within the maintenance shed 10 and the operating status of the maintenance system 20. The control module 32 can automatically adjust the maintenance strategy based on real-time data, such as adjusting the start-up, shutdown, and frequency of the bottom plate spraying device 21, the belly plate spraying device 22, and the inner cavity atomizing device 23, to ensure that the maintenance environment is always kept in the best condition.

[0057] like Figure 3 and Figure 4 As shown, the maintenance station wall 11 includes wall truss columns 11-1 and color steel plates 11-2. There are multiple wall truss columns 11-1, spaced apart, all vertically positioned on the foundation ground, with their lower ends fixedly connected to the foundation. The color steel plates 11-2 are located on one side of the wall truss columns 11-1 and are fixedly connected to them. The wall truss columns 11-1 are located inside the maintenance shed 10, and the color steel plates 11-2 are made of 50mm brick-patterned color steel. This structure combining truss columns and color steel plates provides a simple, quick, and low-cost design while still satisfying the requirement of enclosed space.

[0058] like Figure 3As shown, the maintenance station wall 11 includes a first wall, a second wall, a third wall, and a fourth wall. The first wall, the second wall, the third wall, and the fourth wall are connected end to end to form a rectangular space. The first wall and the third wall are arranged opposite each other. A first entrance 11-3 is opened on the first wall. A first entrance door 11-4 that opens outward is installed on the first entrance door 11-3. The top of the first entrance door 11-4 is flush with the top of the first wall. A rainproof cloth 12 is installed on the top of the first entrance door 11-4. A second entrance 11-5 is opened on the third wall. A second entrance door 11-6 that opens outward is installed on the second entrance door 11-5. The structure of the second entrance door 11-6 is the same as that of the first entrance door 11-4.

[0059] After the precast box girders of the railway have been cured, tensioning and grouting operations are required. To ensure the smooth progress of the tensioning operation, the width of the first entrance / exit 11-3 and the second entrance / exit 11-5 is 9.5m. Before tensioning, the first entrance / exit gate 11-4 and the second entrance / exit gate 11-6 must be opened first. Then, the tensioning vehicle is driven in and its position is adjusted. After the preparations are completed, the tensioning operation can begin. After the tensioning operation is completed, the grouting operation begins.

[0060] Grouting Operation: During grouting, the grout temperature should be controlled below 30℃. The beam and ambient temperatures must not fall below 5℃ during grouting and for three days afterward. The intelligent maintenance station provides a suitable temperature environment for grouting and anchor sealing. Since temperatures in the early morning and evening are typically below 5℃ in winter, this shortens the construction time and affects the overall construction progress. Before grouting, the temperature inside the railway intelligent maintenance station must be adjusted to ensure that the ambient and beam temperatures meet the grouting requirements. Then, the grouting sealing cover is installed, the grouting vehicle is parked next to the railway intelligent maintenance station, and the grouting pipeline is connected through the station's door to begin the grouting operation. The specific procedure for grouting and anchor sealing is as follows:

[0061] (1) Check the wire cutting of the steel strand to ensure that the exposed length is 3-4cm. Then install the grouting hole connecting pipe and connecting valve on the anchor plates at both ends, and then draw a vacuum.

[0062] (2) Slurry preparation process: First, add 80% to 90% of the actual mixing water to the mixer, start the mixer, and evenly add all the grouting agent while stirring. Then, evenly add all the cement. Stir for 2 minutes after adding all the powder. Then add the remaining 10% to 20% of the mixing water and continue stirring for 2 minutes.

[0063] (3) Before grouting, turn on the grouting pump to remove a small amount of grout to expel air, water, and thin grout from the grouting pipeline. When the fluidity of the discharged grout is consistent with that in the mixing tank, begin grouting into the beam duct. Once the pipeline vacuum stabilizes at -0.06 to -0.08 MPa, immediately open the grouting end valve and simultaneously start the grouting pump for continuous grouting. After the pipeline is filled with grout, maintain the pressure at 0.50 to 0.60 MPa for 3 minutes, and ensure that the maximum grouting pressure does not exceed 0.60 MPa.

[0064] (4) The grouting sequence should follow the principle of "bottom first, top last". Grouting of the same pipe should be carried out continuously and completed in one go. First, press cement grout from one end to the other at a pressure of 0.6 MPa. When it is confirmed that the grout concentration at the outlet is consistent with the grout concentration at the inlet, close the outlet and continue grouting, holding the pressure at 0.50-0.60 MPa for more than 3 minutes. Then, close the inlet valve, stop the machine, and start the grouting cycle for the next pipe. After the grouting work is completed, the anchor sealing treatment should be carried out in a timely manner.

[0065] (5) Roughening the anchor hole

[0066] Roughen the concrete surface inside the anchorage cavity thoroughly and evenly, retaining no more than 25% of the original concrete area. Do not roughen the outer 5-10mm edge of the anchorage cavity to avoid damaging the beam end face. After roughening, clean the anchorage cavity and moisten it with water before filling with concrete.

[0067] (6) Construction of anchor reinforcement

[0068] Before binding the anchor reinforcement, remove the mortar adhering to the surface of the anchor plate and the sealing mortar on the anchor ring. To strengthen the connection between the post-filled concrete and the beam, roughen and clean the anchor holes at the beam ends, removing laitance, ash, and other debris. After the end-sealing reinforcement is fabricated according to the design drawings and its dimensions are accurate, place it into the anchor hole. After roughening and cleaning, apply cement slurry around the anchor and to the ends of the steel strands. To strengthen the connection between the post-cast concrete and the beam ends, install short threaded and hooked steel bars on the anchor plate and integrate them with the anchor reinforcement. Place a steel mesh with a protective layer of not less than 30mm and securely bind it to the short steel bars.

[0069] (7) Pouring of anchor sealing concrete

[0070] The anchor is sealed with shrinkage-compensating concrete, which can be filled in several stages, tapping with a rubber mallet as it is filled to ensure compaction and prevent loosening or incomplete filling. If gaps remain between the anchor and the original concrete due to plastic deformation, it must be re-tamped before the concrete hardens to achieve a dense finish. The misalignment of the anchor sealing surface should not exceed 2mm.

[0071] (8) Curing of concrete

[0072] After the anchor sealing operation is completed, the doors of the railway intelligent maintenance station must be closed immediately, and then the anchor sealing concrete must be cured. By adjusting the temperature and humidity inside the railway intelligent maintenance station, the curing quality is ensured to meet the standards, and the formation of anchor sealing cracks is prevented.

[0073] like Figure 5 As shown, an observation window 11-7 is provided on the second wall. The observation window 11-7 is made of tempered glass with transparent material, which makes it convenient to observe the internal situation.

[0074] like Figure 6 and Figure 7 As shown, there are multiple bottom plate spraying devices 21, which are evenly spaced below the precast railway box girder 100 to be maintained. There are also multiple web plate spraying devices 22, which are evenly spaced below the web of the precast railway box girder 100 to be maintained. There are also multiple inner cavity atomizing devices 23, which are sequentially spaced inside the inner cavity of the precast railway box girder 100 to be maintained.

[0075] like Figure 6 and Figure 9 As shown, the maintenance system 20 also includes a main water supply pipe 24 and a connecting hose 25. The bottom plate spraying device 21, the belly plate spraying device 22, and the inner cavity atomizing device 23 are all connected to the main water supply pipe 24 via the connecting hose 25. The main water supply pipe 24 and the connecting hose 25 are connected via a quick-connect coupling.

[0076] The curing system 20 also includes a steam generator 26 and a water storage tank 27. Both the steam generator 26 and the water storage tank 27 are located inside the curing shed 10 near the wall 11 of the curing station. The steam generator 26 is connected to the water storage tank 27 via pipelines to provide a stable, constant temperature and humidity steam environment for the concrete box girder, accelerating the cement hydration reaction, ensuring the concrete strength meets standards, and preventing cracks caused by excessive internal and external temperature differences or rapid moisture evaporation. The steam generator controls the temperature and humidity inside the curing shed 10 through three core steps: energy conversion, water heating and vaporization, and steam delivery.

[0077] like Figure 9As shown, the base plate spraying device 21 includes a movable base 21-1, a bracket 21-2, a spray head 21-3, a spray head rotation drive 21-4, and a pressure control pump 21-5. One end of the bracket 21-2 is fixedly connected to the movable base 21-1. The spray head 21-3 and the spray head rotation drive 21-4 are both mounted on the other end of the bracket 21-2. The spray head rotation drive 21-4 is fixedly connected to the other end of the bracket 21-2, and its output end is connected to the spray head 21-3 to drive the spray head 21-3 to rotate. The spray head 21-3 has a tubular structure with multiple spray nozzles spaced apart along its length. The spray nozzles are divided into left and right sides from the middle. The left spray nozzles tilt to the left, and the right spray nozzles tilt to the right, so that the water jets from the spray nozzles form a fan shape. The spray head rotation drive 21-4 can be a stepper motor or a rotary motor. The spray head 21-3 is rotatably connected to the bracket 21-2. A pressure control pump 21-5 is mounted on the movable base 21-1. The outlet of the pressure control pump 21-5 is connected to the spray head 21-3 via a flexible hose, and the inlet of the pressure control pump 21-5 is connected to a connecting flexible hose 25. The use of a flexible hose facilitates the repositioning of the movable base 21-1. The pressure control pump 21-5 can be a variable frequency pipeline pump. By controlling the speed of the pipeline pump, the spray pressure of the spray head can be precisely controlled, achieving fine-grained control.

[0078] In this embodiment, the movable base 21-1 can be manually moved or automatically moved. The manually moved base includes a floor and casters with fixed supports mounted on the floor. The automatically moved base includes a floor, casters, a caster steering drive motor, a caster travel drive motor, and a control unit. The control unit controls the movement of the automatically moved base according to received instructions. The caster steering drive motor adjusts the direction of the casters, thereby adjusting the forward or backward direction of the automatically moved base. The caster travel drive motor drives the casters to rotate, thereby moving the automatically moved base forward or backward.

[0079] In this embodiment, the structure of the web spraying device 22 is the same as that of the bottom plate spraying device 21, except for the height of the support.

[0080] In this embodiment, the data acquisition module 31 includes multiple cameras and multiple temperature and humidity sensors. The multiple cameras are arranged at intervals inside the curing shed 10 to collect video information of the railway precast box girder 100 to be cured and the curing system 20 inside the curing shed 10. The multiple temperature and humidity sensors are arranged at intervals inside and outside the curing shed 10 to detect the temperature and humidity information inside and outside the curing shed 10.

[0081] In this embodiment, the intelligent monitoring system 30 also includes a data transmission alarm module 34. The data transmission alarm module 34 can transmit information collected by the data acquisition module 31 to a user terminal, such as a mobile phone, enabling communication with the user terminal. The control module 32 can process the information from the data transmission alarm module 34. When a value exceeds a preset value, the control module 32 will also send the information exceeding the preset value to the user terminal and issue an alarm. Information exceeding the preset value may include temperature and humidity information transmitted by temperature and humidity sensors, operating information of various devices in the maintenance system 20, and video information collected by cameras. This enables the intelligent monitoring system 30 to have remote monitoring and early warning functions, facilitating managers to monitor maintenance progress and abnormal situations in real time and take timely measures to address them.

[0082] This application also discloses a method for the maintenance of precast box girders for railways. This method is based on the aforementioned intelligent railway maintenance station and includes the following steps:

[0083] Step 1: Move the precast railway box girder 100 to be cured into the curing shed 10. The intelligent monitoring system 30 will work to determine the temperature and humidity conditions. If they are not up to standard, the curing system 20 will be adjusted to ensure that the temperature and humidity in the curing shed 10 are always at the best. Then, curing or winter construction will be carried out. After the beam curing construction is completed, the next process will begin.

[0084] Step 2: Tensioning operation. First, open the doors on both sides, then drive the tensioning vehicle in and adjust its position. After the preparations are completed, the tensioning operation can begin. After the beam tensioning operation is completed, proceed to the next step.

[0085] Step 3: Grouting Operation. Before grouting, the temperature inside the intelligent curing station must be adjusted to ensure that the ambient temperature and beam temperature meet the grouting requirements. Then, install the grouting sealing cover, park the grouting truck next to the intelligent curing station, and connect the grouting pipe through the small door of the curing station to begin the grouting operation. After completing the grouting operation, the door of the intelligent curing station must be closed immediately, and then the curing work for the anchor concrete can begin. By adjusting the temperature and humidity inside the intelligent curing station, the curing quality is ensured to meet standards, preventing the formation of anchor cracks.

[0086] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the embodiments of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0087] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A railway intelligent maintenance station for maintaining precast railway box girders (100) after pouring, characterized in that, include: The maintenance shed (10) shown includes a maintenance station wall (11) and a rainproof cloth (12). The maintenance station wall (11) is arranged around the precast box girder (100) of the railway to be maintained, and the rainproof cloth (12) is connected to the top of the maintenance room wall (11). The maintenance system (20) includes a bottom plate spraying device (21), a web plate spraying device (22), and an inner cavity atomizing device (23). The bottom plate spraying device (21) is located below the floor of the precast railway box girder (100) to be maintained. The web plate spraying device (22) is located below the web plate of the precast railway box girder (100) to be maintained. The inner cavity atomizing device (23) is located in the inner cavity of the precast railway box girder (100) to be maintained. The intelligent monitoring system (30) includes a data acquisition module (31), a control module (32), and a data display module (33). The data acquisition module (31) is used to collect temperature and humidity information at various collection points of the precast box girder (100) to be maintained, and transmit the collected information to the control module (32). The control module (32) is connected to the maintenance system (20), and the control module (32) is used to control the operation of the maintenance system (20). The control module (32) is used to receive and analyze the data information collected by the data acquisition module (31), and control the operation of the maintenance system (20) according to the received control instructions or according to the analysis results. The data display module (33) is connected to the control module (32) and is used to display the data information collected by the data acquisition module (31) to the user.

2. The intelligent railway maintenance station according to claim 1, characterized in that: The wall (11) of the maintenance station includes wall truss columns (11-1) and color steel plates (11-2). There are multiple wall truss columns (11-1), which are spaced apart. All the wall truss columns (11-1) are vertically set on the foundation ground, and the lower ends of all the wall truss columns (11-1) are fixedly connected to the foundation ground. The color steel plates (11-2) are set on one side of the wall truss columns (11-1), and the color steel plates (11-2) are fixedly connected to the wall truss columns (11-1).

3. The intelligent railway maintenance station according to claim 1, characterized in that: The maintenance station wall (11) includes a first wall, a second wall, a third wall, and a fourth wall. The first wall, the second wall, the third wall, and the fourth wall are connected end to end to form a rectangular space. The first wall and the third wall are arranged opposite each other. A first entrance (11-3) is provided on the first wall. A first entrance door (11-4) that opens outward is installed on the first entrance (11-3). The top of the first entrance door (11-4) is flush with the top of the first wall. A rainproof cloth (12) is provided on the top of the first entrance door (11-4). A second entrance (11-5) is provided on the third wall. A second entrance door (11-6) that opens outward is installed on the second entrance (11-5). The structure of the second entrance door (11-6) is the same as that of the first entrance door (11-4).

4. A railway intelligent maintenance station according to claim 3, characterized in that: An observation window (11-7) is provided on the second wall, and the observation window (11-7) is made of tempered glass made of transparent material.

5. A railway intelligent maintenance station according to claim 1, characterized in that: The number of the bottom plate spraying devices (21) is multiple, and the multiple bottom plate spraying devices (21) are evenly spaced at the bottom of the precast railway box girder (100) to be maintained. The number of the web plate spraying devices (22) is also multiple, and the multiple web plate spraying devices (22) are evenly spaced at the bottom of the web plate of the precast railway box girder (100) to be maintained. The number of the inner cavity atomizing devices (23) is also multiple, and the multiple inner cavity atomizing devices (23) are sequentially spaced at intervals inside the inner cavity of the precast railway box girder (100) to be maintained.

6. A railway intelligent maintenance station according to claim 5, characterized in that: The maintenance system (20) also includes a main water supply pipe (24) and a connecting hose (25). The bottom plate spraying device (21), the belly plate spraying device (22) and the inner cavity atomizing device (23) are all connected to the main water supply pipe (23) through the connecting hose (25). The maintenance system (20) also includes a steam generator (26) and a water storage tank (27). The steam generator (26) and the water storage tank (27) are both located inside the maintenance shed (10) on the side near the wall (11) of the maintenance station. The steam generator (26) is connected to the water storage tank (27) through a pipeline.

7. A railway intelligent maintenance station according to claim 1, characterized in that: The base plate spraying device (21) includes a movable base (21-1), a bracket (21-2), a spray head (21-3), a spray head rotation drive (21-4), and a pressure control pump (21-5). One end of the bracket (21-2) is fixedly connected to the movable base (21-1). The spray head (21-3) and the spray head rotation drive (21-4) are both mounted on the other end of the bracket (21-2). The other end of the nozzle is fixedly connected to the bracket (21-2). The output end of the nozzle rotation drive (21-4) is connected to the nozzle (21-3) to drive the nozzle (21-3) to rotate. The pressure control pump (21-5) is set on the movable base (21-1). The outlet of the pressure control pump (21-5) is connected to the nozzle (21-3) through a hose. The inlet of the pressure control pump (21-5) is connected to the connecting hose (25).

8. A railway intelligent maintenance station according to claim 1, characterized in that: The data acquisition module (31) includes multiple cameras and multiple temperature and humidity sensors. The multiple cameras are arranged at intervals inside the curing shed (10) to collect video information of the railway precast box girder (100) to be cured and the curing system (20) inside the curing shed (10). The multiple temperature and humidity sensors are arranged at intervals inside and outside the curing shed (10) to detect the temperature and humidity information inside and outside the curing shed (10).

9. A railway intelligent maintenance station according to claim 1, characterized in that: The intelligent monitoring system (30) also includes a data transmission alarm module (34) for transmitting data and alarms. The control module (32) is connected to the data transmission alarm module (34) and is used to transmit detection information, control information and alarm information to the data transmission alarm module (34).

10. A method for curing precast box girders for railways, characterized in that, The railway precast box girder maintenance method is a maintenance method implemented based on the railway intelligent maintenance station described in claim 1, and specifically includes the following steps: Step 1: Move the precast railway box girder (100) to be cured into the curing shed (10). The intelligent monitoring system (30) works to determine the temperature and humidity conditions. If they do not meet the standards, the curing system (20) is adjusted to ensure that the temperature and humidity in the curing shed (10) are always in the best state. Then, curing or winter construction is carried out. After the beam curing construction is completed, the next process begins. Step 2: Tensioning operation. First, open the doors on both sides, then drive the tensioning vehicle in and adjust its position. After the preparations are completed, the tensioning operation can begin. After the beam tensioning operation is completed, proceed to the next step. Step 3: Grouting Operation. Before grouting, the temperature inside the intelligent curing station must be adjusted to ensure that the ambient temperature and beam temperature meet the grouting requirements. Then, install the grouting sealing cover, park the grouting truck next to the intelligent curing station, and connect the grouting pipe through the small door of the curing station to begin the grouting operation. After completing the grouting operation, the door of the intelligent curing station must be closed immediately, and then the curing work for the anchor concrete can begin. By adjusting the temperature and humidity inside the intelligent curing station, the curing quality is ensured to meet standards, preventing the formation of anchor cracks.

Images