A magnetic CRTS III ballastless track slab limiting device and construction method

Abstract

The present invention provides a limiting device and construction method for a magnetic CRTS III ballastless track slab. The device includes an electromagnetic mechanism, an isolation mechanism, and a monitoring-control mechanism that are interconnected. The electromagnetic mechanism includes two groups of coils that generate a magnetic field through the principle of electromagnetic induction; the isolation mechanism includes a magnetic field isolation layer, a rubber protective layer, a coil locking buckle, a first groove, a second groove, an electric bracket, and a lifting ring; the monitoring-control mechanism includes a wireless control module, a wireless transmission module, a data display module, a laser ranging module, an automatic slurry blocking plate, a setting knob, a power interface, a narrowband network card interface, and an AC-DC conversion module. The present invention uses non-contact electromagnetic force to uniformly apply force to the track slab, and has the functions of real-time display of limiting pressure, automatic adjustment, and remote control, thereby achieving strict limiting of the CRTS III ballastless track slab during self-compacting concrete pouring construction and improving the quality of the pouring construction.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed railway construction, and in particular to a magnetic CRTS III ballastless track slab limiting device and a construction method. Background Art

[0002] With the vigorous development of high-speed railway construction in my country, the country has developed the CRTS III slab track, a track structure with completely independent intellectual property rights. Currently, this track structure has become the preferred structural type for high-speed railway construction in my country. The most distinctive feature of the CRTS III slab track is the use of self-compacting concrete to fill the space between the track slab and the base. During the construction of the CRTS III slab track structure, when the self-compacting concrete is poured without restraint, the track slab floats above the self-compacting concrete, generating buoyancy and causing changes in the track slab's elevation. Track slab elevation control is a key indicator of ballastless track construction quality, and resisting this buoyancy is particularly important.

[0003] In his paper "Construction Technology of Self-compacting Concrete for CRTSⅢ Type Ballastless Track", Mo Jiangyun of China Railway Shanghai Engineering Bureau introduced that the limiting device composed of compression rod beam and tension rod is commonly used on construction sites to limit the vertical position of track slabs. Although it can play a good limiting role, it also has some shortcomings: First, the traditional limiting device provides limiting pressure by squeezing the compression rod beam and the track slab. However, in the actual construction process, the compression rod beam will bend and arch due to insufficient rigidity, causing stress concentration at the edge of the track slab, resulting in cracks, falling blocks and other damage to the track slab; Second, the traditional limiting device is used at the bottom. Bolt holes are reserved in the seat plate, and bolts are used to fix the pull rods to the base plate. During the construction process, stress concentration is prone to occur at the bolt hole position of the base plate, which increases the risk of damage to the ballastless track structure. At the same time, it increases the risk of damage and maintenance costs during the service life of the ballastless track; third, the traditional limit device applies pre-pressure by adjusting the tightness of the bolts before the self-compacting concrete pouring construction. During the self-compacting concrete pouring process, it cannot be adjusted in real time according to the actual displacement of the track plate; fourth, the traditional limit device is composed of multiple scattered components and mainly relies on manual installation, with low installation accuracy, high labor costs, and is difficult to adapt to mechanized construction.

[0004] In light of the above issues, it is necessary to develop a new type of limiting device that does not cause initial damage to the track structure. This device uses a non-contact method to limit track slab displacement, thus avoiding the stress concentration on the track structure caused by traditional limiting devices, which can damage the ballastless track structure. Furthermore, this device can monitor the spatial position status in real time and adjust the limiting pressure accordingly. Furthermore, this device can meet the requirements of rapid on-site mechanized installation. Therefore, this invention proposes a magnetic CRTS III ballastless track slab limiting device and construction method. Summary of the Invention

[0005] The embodiments of the present invention provide a magnetic CRTS III ballastless track slab limiting device and a construction method, so as to achieve strict limiting of the CRTS III ballastless track slab during self-compacting concrete pouring construction.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions.

[0007] According to one aspect of the present invention, a magnetic CRTS III ballastless track slab limiting device is provided, characterized in that it comprises: an electromagnetic mechanism, an isolation mechanism and a monitoring-control mechanism connected to each other;

[0008] The electromagnetic mechanism includes two sets of coils that generate a magnetic field through the principle of electromagnetic induction;

[0009] The isolation mechanism includes a magnetic field isolation layer, a rubber protective layer for protecting the isolation layer, a coil locking buckle for fixing the coil, a first groove for fixing the wireless transmission module, a second groove for fixing the AC-DC conversion module, an electrically adjustable electric bracket, a lifting ring, a reserved hole for the perfusion funnel, and an observation hole for the diversion trough;

[0010] The monitoring-control mechanism includes a wireless control module, a wireless transmission module, a data display module, a laser ranging module, an automatic slurry blocking plug plate, a setting knob, a power interface, a narrowband network card interface and an AC-DC conversion module.

[0011] Preferably, the two groups of coils of the electromagnetic mechanism are arranged in two layers, upper and lower, corresponding to the positions of the steel mesh of the track plate and the base plate respectively. The electromagnetic mechanism uses the steel mesh in the base plate and the track plate as the iron core of the two groups of coils respectively. The two groups of coils of the electromagnetic mechanism have the same current direction, generating magnetic attraction to provide limiting pressure. The number of turns of the lower layer coil of the electromagnetic mechanism is slightly larger than that of the upper layer coil, so that the self-compacting concrete steel mesh is subjected to a downward magnetic attraction force greater than the upward magnetic attraction force. The two groups of coils of the electromagnetic mechanism are fixed by the coil locking buckle on the inside of the isolation mechanism.

[0012] Preferably, the magnetic field isolation layer of the isolation mechanism is made of high magnetic permeability material, and two layers of 60 coil locking buckles are provided on the inner side of the isolation mechanism, and the coil locking buckles are arranged at equal intervals.

[0013] Preferably, the data display module and the setting knob of the monitoring-control mechanism are connected to the wireless control module, the wireless transmission module is connected to the narrowband network card interface, the narrowband network card interface is inserted into the narrowband network card, so that the limit device is connected to the network, and the wireless control module is connected to the first groove of the isolation mechanism, and the first groove is provided with a socket with power transmission and signal transmission functions;

[0014] The data display module, laser ranging module, AC-DC conversion module, automatic slurry blocking plate, setting knob and electric bracket of the monitoring-control mechanism are all connected to the wireless transmission module, and the wireless transmission module is connected to the wireless control module.

[0015] Preferably, the AC-DC conversion module is provided with a power interface, the AC-DC conversion module is connected to the second groove of the isolation mechanism, a socket with a power transmission function is provided in the second groove, and the second groove socket is connected to the coil of the electromagnetic mechanism to power the coil.

[0016] Preferably, the setting knob includes a setting knob with an on / off function, a setting knob with an on / off function of automatically adjusting the electromagnetic suction force, a setting knob with an on / off function of automatically adjusting the electric brackets on both sides, a setting knob with an on / off function of automatically turning on / off the slurry blocking plate, a setting knob with a function of switching to control different limit devices, and a setting knob with a function of switching to control different automatic slurry blocking plates. The setting knob realizes the control function by rotating to different gears.

[0017] When the setting knob with an on / off function is rotated from the on position to the off position, the AC-DC conversion module applies a reverse current to the coil to demagnetize the steel mesh and then power off the device.

[0018] Preferably, the laser ranging module includes 6 laser ranging sensors, 3 laser ranging sensors are respectively arranged above each track plate, and the positions of the 3 laser ranging sensors are not collinear, and the data display module displays the magnitude of the magnetic attraction force and the distance data between the track plate and the base plate in real time;

[0019] The data display module and setting knob are located on the wireless control terminal, the power interface is located on the AC-DC conversion module, the wireless transmission module and the AC-DC conversion module are connected to the rubber protective layer through the first groove and the second groove respectively, and the laser ranging module is connected to the magnetic field isolation layer through welding.

[0020] Preferably, the coil locking buckle, the reserved hole for the perfusion funnel, the lifting ring, the observation hole for the guide trough, the reserved hole for the installation of the observation hole sleeve and the magnetic field isolation layer are integrally cast; the magnetic field isolation layer and the rubber protective layer are bonded with glue during the manufacturing process of the device; the electric bracket and the magnetic field isolation layer are connected by welding.

[0021] According to another aspect of the present invention, a method for limiting the position of a magnetic CRTS III ballastless track slab is provided, comprising:

[0022] After the track plate is fine-tuned, when installing the magnetic limit device, the distance between the track plate and the top surface of the device is monitored to guide the adjustment process of the limit device;

[0023] The limit device is fixed to the lifting machinery through the lifting ring, hoisted and installed at the construction site, and placed on the ballastless track foundation through the electric bracket. The coil and the magnetic field isolation layer are connected through the coil locking buckle;

[0024] The distance between the track plate and the top surface of the device is monitored by a laser ranging sensor, which transmits the measured data to the wireless control module. When the transmitted data differs from the preset data, the wireless control module controls the extension and retraction of the electric bracket to make the actual distance the same as the preset value, ensuring that the steel mesh in the track plate and base plate is located in the same plane as the upper and lower coils respectively;

[0025] When self-compacting concrete is poured through the track slab grouting holes, the distance between the track slab and the base plate is monitored to guide and control the pouring process;

[0026] The distance between the track plate and the base plate is monitored by a laser ranging sensor. The default spacing is 90mm, the specified thickness of self-compacting concrete. When the spacing is too large or the spacing increases too quickly, the laser ranging sensor transmits data to the wireless control module, which controls the current intensity of the electromagnetic mechanism coil.

[0027] When self-compacting concrete is poured through the track slab grouting holes, the automatic grouting plug is controlled to guide and control the pouring process;

[0028] The opening / closing status of the automatic slurry blocking plates can be controlled wirelessly. When self-compacting concrete flows out of the diversion trough evenly, the corresponding automatic slurry blocking plates are closed. When all automatic slurry blocking plates are closed, the self-compacting concrete pouring is stopped.

[0029] Preferably, the method further comprises:

[0030] After the track plate is fine-tuned and before the self-compacting concrete is poured, the limit device is connected to the lifting machinery through the lifting ring and placed on the ballastless track foundation through the electric bracket; the wireless transmission module and the AC-DC conversion module are respectively installed in the first groove and the second groove of the rubber protective layer; the start setting knob is rotated, the device is powered on, and the data display module shows the size of the magnetic attraction force and the extension and retraction data of the electric bracket; the setting knob for automatically adjusting the function of the electric brackets on both sides is rotated to adjust the limit device, and the distance between the track plate and the top surface of the device is monitored by the laser ranging sensor. The laser ranging sensor transmits the measurement data to the wireless control module. When the transmitted data is different from the preset data, the wireless control module controls the extension and retraction of the electric bracket so that the actual distance The same as the preset value, ensure that the steel mesh in the track plate and the base plate is located in the same plane as the upper and lower coils respectively; rotate the automatic adjustment of the electromagnetic suction setting knob to start the pouring construction of self-compacting concrete. The distance between the track plate and the base plate can be monitored by the laser ranging sensor. The default spacing is the specified thickness of self-compacting concrete 90mm. When the spacing is too large or the spacing increases too quickly, the laser ranging sensor transmits data to the wireless control module. The wireless control module controls the current intensity of the electromagnetic mechanism coil to increase the magnetic attraction; the automatic slurry blocking plate can be controlled to open / close wirelessly. When self-compacting concrete flows evenly out of the guide groove, the corresponding automatic slurry blocking plate is closed. When all automatic slurry blocking plates are closed, the self-compacting concrete pouring is stopped.

[0031] Preferably, the method further comprises:

[0032] During the adjustment of the limit device, the laser distance measuring module measures the distance to the upper surface of the track plate and transmits the data to the wireless control module. After calculation, the wireless control module automatically adjusts the extension and contraction of the electric bracket to make the upper surface of the device parallel to the upper surface of the track plate and the steel mesh in the track plate and base plate respectively in the same plane as the coil;

[0033] During the self-compacting concrete pouring process, the laser ranging module measures the distance between the track plate and the base plate and transmits the data to the wireless control module. The wireless control module transmits the data in real time to the data display module and adjusts the current in the coil to control the electromagnetic suction force. The coil transmits the data to the wireless control module of the monitoring and control mechanism, which transmits the data in real time to the data display module. When the self-compacting concrete is observed to be flowing evenly from the diversion trough through the diversion trough observation hole, the setting knob is rotated to activate the automatic slurry blocking plate and close the exhaust hole.

[0034] It can be seen from the technical solutions provided by the above-mentioned embodiments of the present invention that the embodiments of the present invention use non-contact electromagnetic force to uniformly apply force to the track plate, and have real-time display, automatic adjustment and remote control functions of limit pressure, which can achieve strict limit of CRTS III type ballastless track plate during self-compacting concrete pouring construction, thereby improving the quality of pouring construction; the device of the present invention can realize mechanized and rapid installation, and can be applied to different foundations such as roadbeds, bridges and tunnels, and different linear conditions such as straight sections, flat curve super-elevated sections, and vertical curve ramp sections, thereby promoting the development of ballastless track construction towards intelligence and less manpower.

[0035] Additional aspects and advantages of the present invention will be set forth in part in the following description, will become apparent from the following description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A perspective view of the overall structure of a magnetic CRTS III ballastless track slab limiting device provided in an embodiment of the present invention;

[0038] Figure 2 A front view of the overall structure of a magnetic CRTS III ballastless track slab limiting device provided in an embodiment of the present invention;

[0039] Figure 3 A bottom view of the overall structure of a magnetic CRTS III ballastless track slab limiting device provided in an embodiment of the present invention;

[0040] Figure 4 A left side view of the overall structure of a magnetic CRTS III ballastless track slab limiting device provided in an embodiment of the present invention;

[0041] Figure 5 A three-dimensional diagram of an automatic slurry retaining plate structure provided by an embodiment of the present invention;

[0042] Figure 6 A three-dimensional working diagram of an automatic slurry retaining plate provided by the present invention;

[0043] Figure 7 A three-dimensional diagram of a wireless control terminal provided by the present invention;

[0044] Figure 8 A three-dimensional diagram of the working process during the pouring construction of self-compacting concrete provided by the present invention.

[0045] Figure: Electromagnetic mechanism 1, coil 101; Isolation mechanism 2, magnetic field isolation layer 201, coil locking buckle 203, electric bracket 204, perfusion funnel reserved hole 205, lifting ring 206, diversion trough observation hole 207, second groove 209, observation hole sleeve installation reserved hole 210; Monitoring and control mechanism 3, wireless control module 301, data display module 302, laser ranging module 303, AC-DC converter Replacement module 304, setting knob 305, power interface 306, narrowband network card interface 307, wireless transmission module 308, automatic slurry blocking plug plate 309, automatic slurry blocking plug plate motor 310, automatic slurry blocking plug plate slide 311, plug plate 312, wireless control terminal 313; ballastless track foundation 4, base plate 5, self-compacting concrete mold 6, track plate 7, limit device 10, guide trough 11, concrete bucket 12. DETAILED DESCRIPTION

[0046] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0047] It will be understood by those skilled in the art that, unless expressly stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the description of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, "connected" or "coupled" as used herein may include wireless connections or couplings. The term "and / or" used herein includes any unit and all combinations of one or more associated listed items.

[0048] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the art to which this invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless defined as such, will not be interpreted in an idealized or overly formal sense.

[0049] To facilitate understanding of the embodiments of the present invention, several specific embodiments will be further explained below with reference to the accompanying drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0050] The overall structure of the limiting device of a magnetic CRTSⅢ type ballastless track plate provided by the embodiment of the present invention is shown in the following three-dimensional diagram: Figure 1 As shown, the overall structure front view is as follows Figure 2 As shown, the bottom view of the overall structure is as follows Figure 3 As shown, the left view of the overall structure is as follows Figure 4 shown.

[0051] The magnetic CRTS III ballastless track slab limiting device provided in an embodiment of the present invention includes an electromagnetic mechanism 1 , an isolation mechanism 2 , and a monitoring-control mechanism 3 .

[0052] The electromagnetic mechanism 1 includes two groups of coils 101 that generate magnetic fields through the principle of electromagnetic induction; the isolation mechanism 2 includes a magnetic field isolation layer 201, a rubber protective layer that protects the magnetic field isolation layer 201, a coil locking buckle 203 that fixes the coil 101, a first groove that fixes the wireless transmission module 308, a second groove that fixes the AC-DC conversion module 304, an electrically adjustable bracket 204, a lifting ring 206, a perfusion funnel reserved hole 205, and a guide trough observation hole 207; the monitoring-control mechanism 3 includes a wireless control module, a wireless transmission module, a data display module 302, a laser ranging module, an automatic slurry blocking plate 309, a setting knob 305, a power interface, a narrowband network card interface 307 and an AC-DC conversion module 304.

[0053] The two groups of coils 101 of the electromagnetic mechanism 1 are arranged in two layers, one above the other, corresponding to the positions of the steel meshes of the track plate 7 and the base plate 5, respectively. The electromagnetic mechanism 1 uses the steel meshes in the base plate 5 and the track plate 7 as the iron cores of the two groups of coils 101, respectively, to increase the electromagnetic force. The two groups of coils 101 of the electromagnetic mechanism 1 have the same direction of current, generating a magnetic attraction to provide a limiting pressure. The number of turns of the lower coil 101 of the electromagnetic mechanism 1 is slightly larger than that of the upper coil 101, so that the self-compacting concrete steel mesh is subjected to a downward magnetic attraction force greater than the upward magnetic attraction force, thereby preventing the self-compacting concrete steel mesh from floating. The two groups of coils 101 of the electromagnetic mechanism 1 are fixed by the coil locking buckle on the inner side of the isolation mechanism 2.

[0054] The magnetic field isolation layer 201 of the isolation mechanism 2 is preferably made of a high-permeability material. Examples of high-permeability materials include iron-nickel alloys, silicon steel sheets, and manganese-zinc ferrite. The isolation mechanism 2 is equipped with two layers of 60 coil locking buckles on the inside, arranged at equal intervals.

[0055] The data display module 302 and setting knob 305 of the monitoring-control mechanism 3 are connected to the wireless control module, and the wireless transmission module is connected to the narrowband network interface 307. Narrowband network interface 307 inserts a narrowband network card, connecting the position limiting device 10 to the network and enabling remote wireless communication and control. The wireless control module is connected to the first groove of the isolation mechanism 2, which contains a socket for power and signal transmission.

[0056] The AC-DC converter module 304 is equipped with a power interface that connects to an external AC power source to provide DC power to the limiting device 10. The AC-DC converter module 304 is connected to the second groove of the isolation mechanism 2, which contains a power transmission socket. This second groove socket is connected to the coil 101 of the electromagnetic mechanism 1 to provide power to the coil 101.

[0057] The data display module 302, laser ranging module, AC-DC conversion module 304, automatic slurry blocking plate 309, setting knob 305 and electric bracket 204 of the monitoring-control mechanism 3 are all connected to the wireless transmission module 308, and the wireless transmission module 308 is connected to the wireless control module.

[0058] The setting knob 305 includes a setting knob 305 with an on / off function, a setting knob 305 with an on / off function for automatically adjusting the electromagnetic suction force, a setting knob 305 with an on / off function for automatically adjusting the electric supports 204 on both sides, a setting knob 305 with an on / off function for automatically controlling the slurry blocking plates 309, a setting knob 305 with a function for switching and controlling different limit devices 10, and a setting knob 305 with a function for switching and controlling different automatic slurry blocking plates 309. The setting knob 305 realizes control functions by rotating it to different gear positions.

[0059] The setting knob 305, which has the function of switching and controlling different limit devices 10, has five gears, and one wireless control module can control five sets of limit devices 10. The setting knob 305, which has the function of switching and controlling different automatic slurry blocking plates 309, has eight gears, controlling eight automatic slurry blocking plates 309 in one limit device 10. The remaining four knobs all have two gears: on and off.

[0060] The setting knob 305 with an on / off function is rotated from the on position to the off position, and the AC-DC conversion module 304 applies a reverse current to the coil 101 to demagnetize the steel mesh, and then the device is powered off.

[0061] The laser ranging module includes six laser ranging sensors 303, three of which are positioned above each track plate 7 and are not collinear. The data display module 302 displays data such as the magnetic attraction force and the distance between the track plate 7 and the base plate 5 in real time.

[0062] The limiter 10 is installed at the construction site through mechanical lifting. The limiter 10 is connected to the lifting machinery via four sets of lifting rings 206 on the isolation mechanism 2. The limiter 10 is mounted on the ballastless track foundation 4 via six electric supports 204 on the isolation mechanism 2. By adjusting the height of the electric supports 204 on both sides, the limiter 10 can be adapted to different foundations, such as roadbeds, bridges and tunnels, as well as straight sections, flat curve superelevation sections, and vertical curve ramp sections.

[0063] The coil locking buckle 203, the perfusion funnel reserved hole 205, the lifting ring 206, the guide trough observation hole 207, the observation hole sleeve installation reserved hole 210 and the magnetic field isolation layer 201 are integrally cast. The magnetic field isolation layer 201 and the rubber protective layer are bonded with glue during the device manufacturing process, and the electric bracket 204 is connected to the magnetic field isolation layer 201 by welding.

[0064] A three-dimensional diagram of an automatic slurry blocking plate structure provided by an embodiment of the present invention is shown in FIG. Figure 5 As shown, the working perspective diagram of the automatic slurry blocking plate is as follows Figure 6 As shown, a three-dimensional diagram of a wireless control terminal provided by an embodiment of the present invention is shown in FIG. Figure 7As shown. The data display module 302 and the setting knob 305 are located on the wireless control terminal. The power interface is located on the AC-DC power conversion module 304. The wireless transmission module and the AC-DC power conversion module 304 are connected to the rubber protective layer through the first groove and the second groove respectively. The laser ranging module is connected to the magnetic field isolation layer 201 by welding. Among them, during the adjustment process of the limit device 10, the four laser ranging modules measure the distance from the upper surface of the track plate 7 and transmit the data to the wireless control module. After calculation, the wireless control module automatically adjusts the expansion and contraction of the electric bracket 204 so that the upper surface of the device is parallel to the upper surface of the track plate 7, so that the steel mesh in the track plate 7 and the base plate 5 are respectively in the same plane with the coil 101; during the pouring process of self-compacting concrete, the laser ranging module measures the distance between the track plate 7 and the base plate 5, transmits the data to the wireless control module, and the wireless control module transmits the data in real time to the data display module 302, and adjusts the current in the coil 101 to control the size of the electromagnetic attraction. The coil 101 transmits the data to the wireless control module of the monitoring-control mechanism 3, and the wireless control module transmits the data in real time to the data display module 302. When it is observed through the guide trough observation hole 207 that self-compacting concrete is flowing out of the guide trough 11 evenly, the setting knob 305 is rotated to start the automatic slurry blocking plate 309 and close the exhaust hole. Common settings can be set by key operation through the setting knob 305, and the setting knob 305 includes a setting knob 305 with an on / off function, a setting knob 305 with an on / off function of automatically adjusting the electromagnetic suction force, a setting knob 305 with an on / off function of automatically adjusting the electric brackets 204 on both sides, a setting knob 305 with an on / off function of automatically turning on / off the slurry blocking plug 309, a setting knob 305 with a function of switching to control different limit devices 10, and a setting knob 305 with a function of switching to control different automatic slurry blocking plugs 309.

[0065] Based on the above-mentioned device, an embodiment of the present invention also provides a processing process of a magnetic CRTSⅢ type ballastless track plate limiting construction method, which includes: after the track plate 7 is fine-tuned, when the magnetic limiting device 10 is installed, the adjustment process of the limiting device 10 is guided and controlled by monitoring the distance between the track plate 7 and the top surface of the device.

[0066] The limiting device 10 is fixed to the lifting machine via the lifting ring 206, hoisted and installed at the construction site, and placed on the ballastless track foundation 4 via the electric bracket 204. The coil 101 is connected to the magnetic field isolation layer 201 via the coil locking buckle 203.

[0067] The distance between the track plate 7 and the top surface of the device can be monitored by the laser ranging sensor 303. The laser ranging sensor 303 transmits the measurement data to the wireless control module. When the transmitted data is different from the preset data, the wireless control module controls the extension and retraction of the electric bracket 204 to make the actual distance the same as the preset value, ensuring that the track plate 7 and the steel mesh in the base plate 5 are respectively located in the same plane as the upper and lower coils 101.

[0068] When the self-compacting concrete is poured through the grouting holes of the track plate 7 , the pouring process is guided and controlled by monitoring the distance between the track plate 7 and the base plate 5 .

[0069] The distance between the track plate 7 and the base plate 5 can be monitored by the laser ranging sensor 303. The default spacing is 90 mm, the specified thickness of self-compacting concrete. When the spacing is too large or the spacing increases too quickly, the laser ranging sensor 303 transmits data to the wireless control module, which controls the current intensity of the coil 101 of the electromagnetic mechanism 1 to increase the magnetic attraction.

[0070] When the self-compacting concrete is poured through the grouting holes of the track plate 7, the pouring process is guided and controlled by controlling the automatic grout blocking plug plate 309.

[0071] The opening / closing state of the automatic slurry blocking plates 309 can be controlled wirelessly. When self-compacting concrete flows out of the guide groove 11 evenly, the corresponding automatic slurry blocking plates 309 are closed. When all automatic slurry blocking plates 309 are closed, the self-compacting concrete pouring is stopped.

[0072] The embodiment of the present invention provides a working stereogram during the self-compacting concrete pouring construction. Figure 8As shown, after the track plate 7 is fine-tuned and before the self-compacting concrete is poured, the limiting device 10 is first connected to the lifting machinery through the lifting ring 206 and placed on the ballastless track foundation 4 through the electric bracket 204; the wireless transmission module 308 and the AC-DC conversion module 304 are respectively installed in the first groove and the second groove of the rubber protective layer; the start setting knob 305 is rotated and the device is powered on. At this time, the data display module 302 can display data such as the size of the magnetic attraction force and the extension and contraction amount of the electric bracket 204; the setting knob for automatically adjusting the functions of the electric brackets 204 on both sides is rotated to adjust the limiting device 10. The distance between the track plate 7 and the top surface of the device can be monitored by the laser ranging sensor 303. The laser ranging sensor 303 transmits the measurement data to the wireless control module. When the transmitted data is different from the preset data, the wireless control module controls the electric bracket 204. The extension and retraction of the frame 204 makes the actual distance the same as the preset value, ensuring that the steel mesh in the track plate 7 and the base plate 5 are respectively located in the same plane as the upper and lower coils 101; rotate the automatic adjustment of the electromagnetic attraction setting knob to start the pouring construction of the self-compacting concrete. The distance between the track plate 7 and the base plate 5 can be monitored by the laser ranging sensor 303. The default spacing is 90mm, the specified thickness of the self-compacting concrete. When the spacing is too large or the spacing increases too quickly, the laser ranging sensor 303 transmits data to the wireless control module, and the wireless control module controls the current intensity of the coil 101 of the electromagnetic mechanism 1 to increase the magnetic attraction; the automatic slurry blocking plate 309 can be controlled to be on / off by wireless means. When self-compacting concrete flows evenly out of the guide groove 11, the corresponding automatic slurry blocking plate 309 is closed. When all automatic slurry blocking plates are closed, the self-compacting concrete pouring is stopped.

[0073] In summary, the present invention uses non-contact electromagnetic force to limit the track plate, so that the entire track plate is evenly stressed, which can avoid stress concentration in local positions of the ballastless track and cause structural damage; at the same time, the installation of the device does not require destroying the track structure, avoiding the risk of damage to the ballastless track structure caused by reserved bolt holes during construction and service.

[0074] The present invention has the functions of real-time display, automatic adjustment and remote control of limit pressure. It can automatically adjust the limit pressure according to the change of the spatial position of the track plate, realize the strict limit of CRTS III type ballastless track plate during self-compacting concrete pouring construction, improve the quality of pouring construction, and promote the development of ballastless track construction towards intelligence.

[0075] The present invention can be quickly installed through mechanical lifting, and can be applied to different foundations such as roadbeds, bridges and tunnels, and different linear conditions such as straight sections, flat curve super-elevated sections, and vertical curve ramp sections. The laser ranging module is linked with the electric bracket to automatically complete the device adjustment, and the manual operation is easy, which can reduce labor costs.

[0076] Those skilled in the art will appreciate that the accompanying drawings are merely schematic diagrams of an embodiment, and the modules or processes in the accompanying drawings are not necessarily required to implement the present invention.

[0077] From the above description of the embodiments, it is clear that those skilled in the art will clearly understand that the present invention can be implemented using software and a necessary general-purpose hardware platform. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium such as ROM / RAM, a magnetic disk, or an optical disk, and includes instructions for enabling a computer device (such as a personal computer, server, or network device) to execute the methods described in various embodiments of the present invention, or portions thereof.

[0078] Each embodiment in this specification is described in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the device or system embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For the relevant parts, refer to the partial description of the method embodiments. The device and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. A person of ordinary skill in the art can understand and implement it without making any creative efforts.

[0079] 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 changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A magnetic CRTSⅢ ballastless track plate limiting device, characterized in that: include: An electromagnetic mechanism (1), an isolation mechanism (2), and a monitoring-control mechanism (3) connected to each other; The electromagnetic mechanism (1) comprises two groups of coils (101) that generate a magnetic field through the principle of electromagnetic induction; The isolation mechanism (2) includes a magnetic field isolation layer (201), a rubber protective layer for protecting the magnetic field isolation layer (201), a coil locking buckle (203) for fixing the coil (101), a first groove for fixing the wireless transmission module, a second groove for fixing the AC-DC conversion module (304), an electrically adjustable electric bracket (204), a lifting ring (206), a perfusion funnel reserved hole (205), and a guide trough observation hole (207); The monitoring-control mechanism (3) includes a wireless control module, a wireless transmission module (308), a data display module (302), a laser ranging module, an automatic slurry blocking plate (309), a setting knob (305), a power interface, a narrowband network card interface (307), and an AC-DC conversion module (304); The two groups of coils (101) of the electromagnetic mechanism (1) are arranged in two layers, one above the other, corresponding to the positions of the steel mesh of the track plate (7) and the base plate (5), respectively. The electromagnetic mechanism (1) uses the steel mesh in the base plate (5) and the track plate (7) as the iron cores of the two groups of coils (101), respectively. The two groups of coils (101) of the electromagnetic mechanism (1) have the same current direction, generating magnetic attraction to provide limiting pressure. The number of turns of the lower layer coil (101) of the electromagnetic mechanism (1) is slightly greater than the number of turns of the upper layer coil (101), so that the downward magnetic attraction on the self-compacting concrete steel mesh is greater than the upward magnetic attraction. The two groups of coils (101) of the electromagnetic mechanism (1) are fixed by the coil locking buckle (203) on the inner side of the isolation mechanism (2); The data display module (302) and the setting knob (305) of the monitoring-control mechanism (3) are connected to the wireless control module, the wireless transmission module is connected to the narrowband network card interface (307), the narrowband network card interface (307) is inserted into the narrowband network card, so that the limiting device (10) is connected to the network, and the wireless control module is connected to the first groove of the isolation mechanism (2), and the first groove is provided with a socket with power transmission and signal transmission functions; The data display module (302), laser distance measurement module, AC-DC conversion module (304), automatic slurry blocking plate (309), setting knob (305) of the monitoring-control mechanism (3) and the electric support (204) of the isolation mechanism (2) are all connected to the wireless transmission module (308), and the wireless transmission module (308) is connected to the wireless control module; The laser distance measurement module includes six laser distance measurement sensors (303), three of which are respectively arranged above each track plate (7), and the three laser distance measurement sensors (303) are not positioned collinearly. The data display module (302) displays the magnitude of the magnetic attraction force and the distance data between the track plate (7) and the base plate (5) in real time. The data display module (302) and the setting knob (305) are located on the wireless control terminal (313), the power interface is located on the AC-DC conversion module (304), the wireless transmission module and the AC-DC conversion module (304) are connected to the rubber protective layer through the first groove and the second groove respectively, and the laser ranging module is connected to the magnetic field isolation layer (201) through welding.

2. The device according to claim 1, characterized in that The magnetic field isolation layer (201) of the isolation mechanism (2) is made of a high magnetic permeability material. Two layers of 60 coil locking buckles (203) are provided on the inner side of the isolation mechanism (2). The coil locking buckles (203) are arranged at equal intervals. The coil locking buckle (203), the pouring funnel reserved hole (205), the lifting ring (206), the guide trough observation hole (207), the observation hole sleeve installation reserved hole (210) and the magnetic field isolation layer (201) are integrally cast; the magnetic field isolation layer (201) and the rubber protective layer are bonded with glue during the device manufacturing process; the electric bracket (204) and the magnetic field isolation layer (201) are connected by welding.

3. The device according to claim 1, characterized in that The AC-DC conversion module (304) is provided with a power supply interface. The AC-DC conversion module (304) is connected to the second groove of the isolation mechanism (2). A socket with a power transmission function is provided in the second groove. The second groove socket is connected to the coil (101) of the electromagnetic mechanism (1) to supply power to the coil (101).

4. The device according to claim 1, characterized in that The setting knob (305) includes a setting knob (305) with an on / off function, a setting knob (305) with an on / off function for automatically adjusting the electromagnetic suction force, a setting knob (305) with an on / off function for automatically adjusting the electric brackets (204) on both sides, a setting knob (305) with an on / off function for automatically adjusting the slurry blocking plug plate (309), a setting knob (305) with a function for switching and controlling different limit devices (10), and a setting knob (305) with a function for switching and controlling different automatic slurry blocking plug plates (309). The setting knob (305) realizes control functions by rotating to different gear positions. When the setting knob (305) with an on / off function is rotated from the on position to the off position, the AC-DC conversion module (304) applies a reverse current to the coil (101) to demagnetize the steel mesh, and then the device is powered off.

5. A construction method for a magnetic CRTS III ballastless track slab limiter according to any one of claims 1 to 4, characterized in that: include: After the track plate (7) is finely adjusted, when the magnetic limiting device (10) is installed, the distance between the track plate (7) and the top surface of the device is monitored to guide the adjustment process of the limiting device (10); The limiting device (10) is fixed to the lifting machine via a lifting ring (206), is hoisted and installed at the construction site, and is placed on the ballastless track foundation (4) via an electric bracket (204), and the coil (101) is connected to the magnetic field isolation layer (201) via a coil locking buckle (203); The distance between the track plate (7) and the top surface of the device is monitored by a laser distance sensor (303), and the laser distance sensor (303) transmits the measured data to the wireless control module. When the transmitted data is different from the preset data, the wireless control module controls the extension and contraction of the electric bracket (204) so ​​that the actual distance is the same as the preset value, ensuring that the steel mesh in the track plate (7) and the base plate (5) are respectively located in the same plane as the upper and lower coils (101); When the self-compacting concrete is poured through the grouting holes of the track plate (7), the pouring process is guided and controlled by monitoring the distance between the track plate (7) and the base plate (5); The distance between the track plate (7) and the base plate (5) is monitored by a laser distance sensor (303). The distance is set to 90 mm, which is the thickness of the self-compacting concrete. When the distance is too large or the distance increases too quickly, the laser distance sensor (303) transmits data to a wireless control module, which controls the current intensity of the coil (101) of the electromagnetic mechanism (1). When the self-compacting concrete is poured through the grouting holes of the track plate (7), the pouring process is guided and controlled by controlling the automatic grouting plug plate (309); The opening / closing state of the automatic slurry blocking plug plate (309) can be controlled wirelessly. When the self-compacting concrete flows out of the guide groove (11) evenly, the corresponding automatic slurry blocking plug plate (309) is closed. When all the automatic slurry blocking plug plates (309) are closed, the self-compacting concrete pouring is stopped.

6. The method according to claim 5, characterized in that The method further comprises: After the track plate (7) is fine-tuned and before the self-compacting concrete is poured, the limiting device (10) is connected to the lifting machine through the lifting ring (206) and is placed on the ballastless track foundation (4) through the electric bracket (204); the wireless transmission module (308) and the AC-DC conversion module (304) are respectively installed in the first groove and the second groove of the rubber protective layer; the start setting knob (305) is rotated to power on the device, and the data display module (302) displays the size of the magnetic attraction force and the extension and contraction data of the electric bracket (204); the setting knob for automatically adjusting the function of the electric brackets (204) on both sides is rotated to adjust the limiting device (10), and the distance between the track plate (7) and the top surface of the device is monitored by the laser distance sensor (303). The laser distance sensor (303) transmits the measured data to the wireless control module. When the transmitted data is different from the preset data, the wireless control module controls the electric bracket (204). The distance between the track plate (7) and the base plate (5) is adjusted so that the actual distance is the same as the preset value, ensuring that the steel mesh in the track plate (7) and the base plate (5) is located in the same plane as the upper and lower coils (101); the automatic adjustment of the electromagnetic attraction setting knob is rotated to start the pouring construction of the self-compacting concrete. The distance between the track plate (7) and the base plate (5) can be monitored by the laser distance sensor (303). The default spacing is 90 mm, which is the specified thickness of the self-compacting concrete. When the spacing is too large or the spacing increases too quickly, the laser distance sensor (303) transmits data to the wireless control module. The wireless control module controls the current intensity of the coil (101) of the electromagnetic mechanism (1) to increase the magnetic attraction. The automatic slurry blocking plate (309) can be controlled to be on / off by wireless means. When the self-compacting concrete flows out evenly from the guide groove (11), the corresponding automatic slurry blocking plate (309) is closed. When all the automatic slurry blocking plates (309) are closed, the self-compacting concrete pouring is stopped.

7. The method according to claim 6, characterized in that The method further comprises: During the adjustment process of the limiting device (10), the laser distance measuring module measures the distance to the upper surface of the track plate (7) and transmits the data to the wireless control module. The wireless control module automatically adjusts the extension and contraction amount of the electric bracket (204) after calculation, so that the upper surface of the device is parallel to the upper surface of the track plate (7), and the steel mesh in the track plate (7) and the base plate (5) are respectively in the same plane as the coil (101); During the pouring process of the self-compacting concrete, the laser distance measuring module measures the distance between the track plate (7) and the base plate (5), transmits the data to the wireless control module, and the wireless control module transmits the data to the data display module (302) in real time, and adjusts the current in the coil (101) to control the magnitude of the electromagnetic attraction. The coil (101) transmits the data to the wireless control module of the monitoring-control mechanism (3), and the wireless control module transmits the data to the data display module (302) in real time. When it is observed through the guide groove observation hole (207) that the self-compacting concrete flows out of the guide groove (11) uniformly, the setting knob (305) is rotated to start the automatic slurry blocking plate (309) and close the exhaust hole.

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