A track structure for a tube rail transport system and a method of construction thereof

Abstract

The application discloses a track structure suitable for a tubular rail transportation system and a construction method thereof, and belongs to the technical field of tubular rail logistics transportation, which comprises a pipeline, a suspension rail assembly arranged at the top of the inner cavity of the pipeline and a guide rail assembly arranged at the bottom of the inner cavity of the pipeline. The suspension rail assembly and the guide rail assembly are designed in terms of position and structural composition, fully adapt to the suspension traction and guide switching of the tubular rail vehicle, and meet the running requirements of the tubular rail vehicle in the tubular rail transportation system. The track structure suitable for the tubular rail transportation system is simple in structure, convenient to construct, can effectively meet the engineering application requirements of the tubular rail transportation system, ensure the stability, reliability and safety of the tubular rail vehicle operation, simplify the design and construction of the turnout structure and the curve superelevation structure in the tubular rail transportation system, reduce the construction and operation cost of the tubular rail transportation system, and promote the development and application of the tubular rail logistics transportation technology.

Description

Technical Field

[0001] This invention belongs to the field of pipeline logistics transportation technology, specifically relating to a track structure and its construction method suitable for pipeline transportation systems. Background Technology

[0002] With the acceleration of urbanization and the improvement of living standards, the demand for logistics is increasing daily, putting enormous pressure on traditional ground freight methods and placing higher demands on their transportation efficiency and volume. Although air freight can guarantee the efficiency of logistics transportation to a certain extent, its transportation costs are extremely high and its transportation volume is limited, failing to fully meet the actual needs of logistics transportation. Therefore, how to improve existing logistics transportation methods has become a key challenge for researchers.

[0003] As an emerging logistics transportation solution, pipeline rail transport utilizes vehicles to transport goods within closed pipeline tracks, effectively alleviating ground traffic pressure and improving logistics transportation efficiency.

[0004] Currently, some exploration has been conducted on tubular rail transportation systems both domestically and internationally. In known tubular rail transportation systems, the vehicles are typically maglev vehicles based on conventional electromagnetic levitation technology, either vehicle-mounted or rail-mounted. However, both vehicle-mounted and rail-mounted maglev vehicles require a relatively complex track structure to enable the maglev vehicle to move.

[0005] In reality, track structure designs for maglev rail transport systems mostly remain at the design stage, with a significant gap between current implementation and actual construction and operation. Furthermore, track structure construction often involves superelevation design for curved sections. The implementation of superelevation design for curved sections in maglev track structures is complex, and the system precision of curved sections cannot be fully guaranteed, posing significant challenges to the stability and reliability of maglev vehicles. In addition, the maglev turnout structure is one of the key structures in a maglev track system. However, in the design of existing maglev track systems, the turnout structures are mostly articulated, with large structural dimensions, high loads, and high system costs. These designs impose strict requirements on the substructure design, which is poorly matched to the application needs of maglev rail transport systems. Most of these designs cannot be directly adapted and urgently require design improvements. Summary of the Invention

[0006] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a track structure and its construction method suitable for a pipe rail transportation system, which can efficiently and stably realize the track structure setting of the pipe rail transportation system, meet the requirements of stable running and disembarking and turning of pipe rail vehicles, effectively reduce the difficulty of track structure construction and adjustment, and fully meet the design and operation requirements of the pipe rail transportation system.

[0007] To achieve the above objectives, one aspect of the present invention provides a track structure suitable for a pipe-rail transportation system, comprising a pipe, a suspended rail assembly disposed at the top of the pipe's inner cavity, and a guide rail assembly disposed at the bottom of the pipe's inner cavity; wherein: The suspension rail assembly is used to achieve the suspension and traction of the tube rail vehicle. It includes multiple suspension sleepers spaced apart in the longitudinal direction of the tube, two suspension rails respectively located at both ends of the suspension sleepers and extending longitudinally along the tube, and an induction plate located between the two suspension rails and extending longitudinally. The induction plate is installed in the middle of the suspension sleepers, and each suspension sleeper is installed at the top of the tube cavity with a connector. The guide rail assembly is used to realize the unloading, guidance and switching of tubular rail vehicles. It includes a track bed, guide sleepers set on the track bed, and pairs of rails fixed to the guide sleepers by fasteners. The suspension rail assembly forms a suspension travel surface, the guide rail assembly forms a guide travel surface, and the suspension travel surface and the guide travel surface are always parallel to each other.

[0008] As a further improvement of the present invention, it includes a straight segment with a straight axis and a curved segment with a curved axis; wherein: The suspended travel surface and the guide travel surface in the straight section are both horizontally set; the suspended travel surface and the guide travel surface in the curved section are both inclined at the same angle relative to the horizontal plane.

[0009] As a further improvement of the present invention, the angle is 2°~8°; and / or In the straight section, the suspended sleeper is connected and fixed to the pre-embedded sleeve at the top of the inner cavity of the pipe by fastener connecting bolts; and / or A drainage ditch of a certain depth and extending longitudinally is provided in the middle of the top surface of the track bed or on at least one side of its transverse direction.

[0010] As a further improvement of the present invention, a transition section is provided between the straight line segment and the curved segment; In the transition section, the suspended running surface formed at the top of the pipe is a variable inclination running surface. This variable inclination running surface extends longitudinally, and the inclination angle of the variable inclination running surface relative to the horizontal plane changes continuously from zero degrees at one end of the connecting straight section to the superelevation of the curve at one end of the connecting curved section.

[0011] As a further improvement of the present invention, in the curved section, the pipe is a prefabricated pipe, and the top of the inner cavity of the prefabricated pipe is prefabricated with an inclined mounting surface. The suspended sleeper is connected and fixed to the pre-embedded sleeve on the inclined mounting surface by fastener connecting bolts.

[0012] As a further improvement of the present invention, in the curved section, the suspended sleeper is an irregularly shaped sleeper, which has a sleeper mounting surface and a suspended mounting surface that are not parallel to each other. The sleeper mounting surface is in close contact with the horizontal mounting surface at the top of the pipe cavity, and is connected and fixed to the pre-embedded sleeve on the horizontal mounting surface by fastener connecting bolts; the included angle between the suspended mounting surface and the sleeper mounting surface is equal to the angle of inclination of the suspended running surface relative to the horizontal plane, and both suspended rails and the induction plate are set on the suspended mounting surface.

[0013] As a further improvement of the present invention, in the curved section, the top of the pipe is provided with an arc-shaped channel along the circumference, and a sliding member that can slide and be fixed along the channel axis is provided in the arc-shaped channel; the sleeper is connected to the sliding member that has slid into place through a connector that extends into the arc-shaped channel, thereby realizing the inclined setting of the suspended running surface relative to the horizontal plane.

[0014] As a further improvement of the present invention, in the curved section, the top of the pipe has an arc-shaped inner wall surface, and multiple sleeve groups are arranged longitudinally on the arc-shaped inner wall surface, and each sleeve group includes multiple pre-embedded sleeves arranged circumferentially at intervals; and The suspended sleeper is also provided with a sleeper connector; the top of the sleeper connector is an arc surface, which is used to contact and match the arc-shaped inner wall surface, and the bottom is a flat surface, which is used to contact and connect with the sleeper mounting surface of the suspended sleeper; by changing the circumferential position of the sleeper connector when it is connected at the top of the pipe, the tilt angle of the suspended running surface on the suspended sleeper relative to the horizontal plane can be set.

[0015] As a further improvement of the present invention, the suspension track is an F-shaped track, a π-shaped track, or a U-shaped track; and / or The suspension rail assembly also includes an iron core extending longitudinally and disposed below the middle of the suspension sleeper, and the induction plate is installed at the bottom of the iron core; and / or The suspended sleeper is an H-shaped sleeper or a square sleeper.

[0016] Another aspect of the present invention provides a method for constructing a track structure suitable for a tubular rail transport system, comprising the following steps: (1) Carry out pipeline construction and determine the construction plan for the suspension rail assembly and guide rail assembly in straight and curved sections; (2) Construction of the suspension rail components: Multiple sleepers spaced longitudinally, paired suspended rails, and an induction plate placed between the two suspended rails are combined to form a suspended rail panel. The suspended track is hoisted and laid inside the pipeline to form a longitudinally extending suspended running surface; (3) Construction of the guide rail assembly: Guide sleepers and pairs of rails are sequentially installed on the cast-in-place or precast track bed at the bottom of the pipeline cavity to form a guide running surface, and the guide running surface is adjusted to be parallel to the suspended running surface.

[0017] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0018] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include: The track structure applicable to the tubular rail transport system in this invention includes a pipe, a suspended rail assembly located at the top of the pipe's inner cavity, and a guide rail assembly located at the bottom of the pipe's inner cavity. By utilizing the design of the position and structural composition of the suspended rail assembly and the guide rail assembly, it fully adapts to the suspension traction and guiding turn of the tubular rail vehicle, meets the travel requirements of the tubular rail vehicle in the tubular rail transport system, ensures the smoothness, stability, and reliability of the tubular rail vehicle's travel, simplifies the track structure in the tubular rail transport system, and reduces construction costs while fully ensuring the reliability of the construction and installation of the track structure of the tubular rail transport system and the convenience of maintenance.

[0019] The track structure applicable to the tubular rail transport system in this invention is simple in structure and convenient to construct. It can effectively meet the engineering application requirements of the tubular rail transport system, ensure the stability, reliability and safety of the operation of the tubular rail vehicles, simplify the design and construction of turnout structures and superelevation structures on curves in the tubular rail transport system, reduce the construction and operation costs of the tubular rail transport system, and promote the development and application of tubular rail logistics transport technology. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an isometric view of the track structure applicable to the tubular rail transportation system in this embodiment of the invention; Figure 2 This is a schematic diagram of the cross-sectional shape of the track structure applicable to the tubular rail transportation system in an embodiment of the present invention; Figure 3 This is a schematic diagram of the pipeline structure applicable to the track structure of the pipeline transportation system in this embodiment of the invention; Figure 4This is a schematic diagram of the suspended rail assembly structure applicable to the track structure of the tubular rail transportation system in an embodiment of the present invention; Figure 5 This is an exploded view of the suspended rail assembly structure of the track structure applicable to the tubular rail transportation system in this embodiment of the invention; Figure 6 This is a schematic diagram of the curve superelevation implementation method of the track structure in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the curve superelevation implementation method of the track structure in Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the curve superelevation implementation method of the track structure in Embodiment 3 of the present invention; Figure 9 This is a schematic diagram of the curve superelevation implementation method of the track structure in Embodiment 4 of the present invention; Figure 10 This is another implementation of the track bed drainage ditch of the guide rail assembly in this invention embodiment; Figure 11 This is a schematic diagram of the construction process of the track structure applicable to the tubular rail transportation system in an embodiment of the present invention; In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Pipeline; 2. Suspension rail assembly; 3. Guide rail assembly; 4. Fasteners; 5. Tube rail vehicle; 101. Horizontal mounting surface; 102. Inclined mounting surface; 103. Embedded sleeve; 104. Arc-shaped channel; 201. Suspended sleeper; 2011. Conventional sleeper; 2012. Irregular sleeper; 202. Suspended rail; 203. Induction plate; 204. Iron core; 205. Sleeper connector; 301. Track bed; 302. Guide sleeper; 303. Rail; 304. Drainage ditch; 401. Connecting bolt; 402. Adjusting component. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0023] In the description of this invention, it should be understood that, unless otherwise expressly specified and limited, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0024] Furthermore, unless otherwise expressly defined, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] Below, for reference Figures 1-11 This invention describes a track structure suitable for a tubular rail transport system and its construction method according to a preferred embodiment of the present invention.

[0028] Firstly, as one aspect of the present invention, a track structure suitable for a pipeline rail transport system is provided, which is correspondingly configured for the pipeline rail vehicle 5 operating in the pipeline 1 to ensure the reliability and stability of the operation of the pipeline rail vehicle 5. The pipeline rail vehicle 5 involved in the preferred embodiment mainly refers to a pipeline rail logistics vehicle with a suspension traction mechanism on its top and a guide traveling mechanism on its bottom. However, since the design of the pipeline rail vehicle 5 is not the focus of this invention, it will not be elaborated upon or illustrated.

[0029] Specifically, in the preferred embodiment, the track structure suitable for a tubular rail transport system is as follows: Figure 1 As shown, it includes a pipe 1, a suspension rail assembly 2 disposed at the top of the inner cavity of the pipe 1, and a guide rail assembly 3 disposed at the bottom of the inner cavity of the pipe 1; wherein: The suspension rail assembly 2 is used to realize the suspension and traction of the tube rail vehicle 5. It includes a plurality of suspension sleepers 201 arranged at intervals in the longitudinal direction of the tube 1, two suspension rails 202 arranged at both ends of the suspension sleepers 201 and extending longitudinally along the tube 1, and a sensing plate 203 arranged between the two suspension rails 202 and extending longitudinally. The sensing plate 203 is installed in the middle of the suspension sleepers 201, and each suspension sleeper 201 is installed on the top of the inner cavity of the tube 1 with a connector. The guide rail assembly 3 is used to realize the unloading, guidance and switching of the tubular rail vehicle. It includes a track bed 301, a guide sleeper 302 set on the track bed 301, and a pair of rails 303 fixed to the guide sleeper 302 by fasteners 4. The suspension rail assembly 2 forms a suspension travel surface, and the guide rail assembly 3 forms a guide travel surface, and the suspension travel surface and the guide travel surface are always parallel to each other.

[0030] By combining the suspension rail assembly 2 and the guide rail assembly 3 within the pipe 1, the magnetic levitation traction and guiding / switching requirements of the tubular rail vehicle 5 can be simultaneously met. This reduces the resistance during the operation of the tubular rail vehicle 5, increases its operating speed, and thus improves the efficiency of tubular rail logistics transportation. Furthermore, the corresponding arrangement of the guide rail assembly 3 effectively limits the bottom clearance of the tubular rail vehicle 5 during operation, ensuring the reliability and stability of the vehicle's passage through curves and bends. It also provides assurance for track switching and emergency support, avoiding the problems of large size and high cost associated with conventional maglev vehicle articulated turnout structures.

[0031] It should be further explained that, in the preferred embodiment, by adopting a "same-side arrangement of suspension and traction," the primary winding of the linear motor (the part that generates the magnetic field after being energized, including the primary core and primary winding) and the suspension magnet are arranged on the same side. This transforms the unfavorable relationship of mutual cancellation between the motor's normal force and the suspension electromagnetic force in conventional maglev systems into a favorable relationship of cooperation, thereby effectively reducing the energy consumption of suspension and traction. By combining the air gaps for suspension and traction into one, and given the attractive force exhibited by the linear motor, it is permissible to reduce the excitation current of the electromagnet and adjust the minimum air gap value between the motor and the magnet. This reduces the precision requirements for train and track manufacturing; reduces the working air gap of the motor; and improves the motor's operating efficiency.

[0032] In short, by utilizing the track structure configuration in the preferred embodiment, the magnetic levitation low-resistance high-speed operation of the tubular rail vehicle 5 on conventional straight sections is satisfied, while also ensuring the reliability and safety of the tubular rail vehicle 5 in curved sections and intersection / change areas, thereby improving the efficiency and control flexibility of tubular rail logistics transportation.

[0033] More specifically, in the preferred embodiment, the selection of the suspension rail 202 can be determined according to actual needs, and it is preferably an F-type rail, a π-type rail or a U-type rail; More specifically, in actual installation, to better facilitate the installation of the induction plate 203, it is preferable to have an iron core 204 extending longitudinally below the center of the suspended sleeper 201, and to connect the induction plate 203 to the bottom of the iron core 204, such as... Figure 4 , Figure 5 As shown.

[0034] More preferably, an insulating layer is provided between the induction plate 203 and the iron core 204.

[0035] Furthermore, in actual installation, the suspended sleeper 201 in the preferred embodiment is an H-shaped sleeper or a square sleeper that extends laterally.

[0036] Meanwhile, in the preferred embodiment, the H-shaped sleeper is designed to be narrower at the top and wider at the bottom, meaning that the length of the side connecting to the mounting surface of the top cavity of pipe 1 (the top of the sleeper) is less than the length connecting to the side connecting to the suspended rail 202 (the bottom of the sleeper). Thus, in a cross-sectional view, the suspended sleeper 201 in the preferred embodiment has a trapezoidal shape, as shown... Figure 2 As shown.

[0037] Furthermore, for a real-world operational rail transport system, the rail vehicle 5 inevitably involves a combination of straight-line and turning maneuvers during operation. Therefore, the track structure in the preferred embodiment includes straight sections with a straight axis and curved sections with a curved axis; wherein: Both the floating and guiding surfaces in the straight sections are set horizontally; both the floating and guiding surfaces in the curved sections are inclined at the same angle relative to the horizontal plane.

[0038] In other words, in curved sections, the track structure needs to be designed with superelevation, which is reflected in the cross-section of the track structure, meaning the track running surface will tilt to one side, such as... Figures 6-8 As shown.

[0039] In actual installation, the preferred embodiment has a track structure with a running surface tilt angle of 2° to 8° on the curved section. This tilt angle is determined according to the bending radius of the curved section, which will not be elaborated here.

[0040] Based on the structural differences between straight and curved segments, the installation method of the suspension rail assembly 2 was designed in the preferred embodiment. Specifically: In straight sections, the suspended sleeper 201 is preferably connected and fixed to the pre-embedded sleeve 103 pre-installed in the top of the inner cavity of the pipe 1 via the connecting bolts 401 of the fastener 4. At this time, a horizontal mounting surface 101 is preferably provided at the top of the pipe 1, such as... Figure 2 As shown.

[0041] Meanwhile, in the preferred embodiment, the fastener 4 includes a connecting bolt 401 and an adjusting member 402. The suspended sleeper 201 can be directly connected and fixed to the pre-embedded sleeve 103 pre-embedded in the horizontal mounting surface 101 through several fasteners 4, thereby ensuring the levelness of the suspended running surface, realizing the precision adjustment of the track system, compensating for the construction deviation of the civil structure, ensuring the smoothness of the line during the service stage of the system, and thus ensuring the stability and reliability of the operation of the tubular rail vehicle 5.

[0042] Furthermore, to achieve a smooth transition between curved and straight sections in the track structure, a transition section is preferably provided. In this transition section, the suspended running surface formed at the top of the pipe 1 is a variable-angle running surface. This variable-angle running surface extends longitudinally, and the angle of inclination of the variable-angle running surface relative to the horizontal plane continuously changes from zero degrees at the end connecting the straight section to the superelevation angle of the curve at the end connecting the curved section (i.e., the angle between the suspended running surface and the horizontal plane in the curved section).

[0043] For the design of superelevation of curved segments, this invention proposes multiple implementation methods, as follows: the implementation methods are explained through four embodiments, and the design of the transition segment under each implementation method is elaborated.

[0044] Example 1: In this embodiment, the superelevation design of the curved segment is as follows: Figure 6 As shown, at this time, the pipe 1 located in the curved section is a prefabricated curved pipe with its axis extending along the curve, and the mounting surface of the suspended sleeper 201 formed at the top of the pipe is an inclined mounting surface 102.

[0045] More specifically, a pre-embedded sleeve 103 is pre-installed in the inclined mounting surface 102. The axis of the pre-embedded sleeve 103 is perpendicular to the inclined mounting surface 102, ensuring that the suspended running surface is always perpendicular to the installation and fastening direction of the suspended rail assembly 2, avoiding damage and detachment of the suspended rail assembly 2 due to shear stress at the installation location, and ensuring the reliability of the suspended rail assembly 2 at the curved section.

[0046] Accordingly, the suspended sleeper 201 in this embodiment is a conventional sleeper 2011, which is preferably connected and fixed to the pre-embedded sleeve 103 on the inclined mounting surface 102 by the connecting bolt 401 of the fastener 4.

[0047] In this embodiment, the superelevation of the curve is achieved by prefabricating the structure of the curved section pipe 1, which can effectively ensure the rapid installation of the suspension rail assembly 2 in the curved section and meet the design requirements of the suspension running surface.

[0048] In addition, the guide rail assembly 3 at the bottom of the curved pipe can be installed either in the factory with the same inclined track bed 301 as the inclined mounting surface 102, or the track bed 301 can be cast on-site and the guide rail assembly 3 can be installed. The preferred option can be selected according to actual needs, which will not be elaborated here.

[0049] Furthermore, in order to accommodate the connection between the aforementioned curved pipe and the straight pipe section 1, a transition section is also provided between the straight section and the curved section in actual installation.

[0050] In the transition section, pipe 1 is a transition pipe, which is a straight pipe or a slightly curved pipe with a large bending radius. One end of the transition pipe is used to connect with pipe 1 in the straight section, and the other end is used to connect with the curved pipe in the curved section. A variable tilt angle mounting surface is formed at the top of the transition pipe. The variable tilt angle mounting surface is used to achieve a smooth transition between the horizontal mounting surface 101 and the inclined mounting surface 102.

[0051] More specifically, the variable-angle mounting surface extends longitudinally along the pipe, with one end being horizontal and the other end being inclined. The inclination angle of the inclined end is the same as that of the inclined mounting surface 102 in the curved pipe. Simultaneously, the inclination angle of the variable-angle mounting surface changes continuously from the horizontal end to the inclined end, achieving a continuous change in the inclination angle of the mounting surface. This ensures a smooth transition when the suspended running surface switches between straight and curved sections.

[0052] Example 2: In this embodiment, the pipe 1 in the curved section is also a curved pipe, but the mounting surface formed at the top of the curved pipe is still a horizontal mounting surface 101, except that the horizontal mounting surface 101 extends along the curve.

[0053] At this point, in order to meet the design requirements for superelevation of the curve, it is preferable to design the suspended sleeper 201 as a non-standard sleeper 2012, such as... Figure 7 As shown, the irregular sleeper 2012 has non-parallel sleeper mounting surfaces (top surface) and suspension mounting surfaces (bottom surface), and the included angle between the two mounting surfaces is exactly equal to the design inclination angle required for the superelevation of the curve.

[0054] During actual installation, the sleeper mounting surface is tightly attached to the horizontal mounting surface 101 at the top of the inner cavity of the pipe 1, and is connected and fixed to the pre-embedded sleeve 103 on the horizontal mounting surface 101 by the connecting bolts 401 of the fastener 4. At the same time, the two suspension rails 202 and the induction plate 203 are all set on the suspension mounting surface (at both ends of the lateral direction).

[0055] For the superelevation implementation method of the curve in Embodiment 2, a transition section can also be set between the straight section and the curved section as needed. The transition section includes multiple transition section sleepers arranged at intervals along the axial direction. The inclination angle between the sleeper mounting surface and the suspension mounting surface in each transition section sleeper gradually increases from zero degrees to the inclination angle between the sleeper mounting surface and the suspension mounting surface in the 2012 irregular sleeper, thereby achieving a smooth transition between the straight section and the curved section.

[0056] Obviously, in order to ensure the smoothness of the transition section, it is necessary to ensure that the transition section has a certain length, so as to control the change in inclination angle between two adjacent sleepers. This can be designed according to actual needs, and will not be elaborated here.

[0057] In actual construction, in order to ensure the accuracy of the transition section sleeper construction, it is preferable to label each transition section sleeper to ensure that the installation can be carried out in the correct order of the labels, thus ensuring the smoothness of the change of the suspended running surface in the transition section, and thus providing the smoothness and reliability of the operation of the tubular rail vehicle.

[0058] In addition, to simplify on-site construction, the aforementioned transition section sleepers can be prefabricated in the factory as rail panel structures to form curved rail panels, and then hoisted into the pipe 1 of the curved section.

[0059] Example 3: In this embodiment, the superelevation of the curve is achieved through a special design of pipe 1.

[0060] Specifically, in the curved section, an arc-shaped channel 104 is provided circumferentially at the top of pipe 1. A sliding element (e.g., a T-bolt) is provided in this arc-shaped channel 104, which can slide and be fixed along the channel axis. Figure 8 As shown. At the same time, the suspended sleeper 201 is connected to the sliding member that has slid into place through a connector, thereby realizing the inclined setting of the suspended running surface relative to the horizontal plane.

[0061] For the suspended sleeper 201 in this embodiment, it is preferably a conventional sleeper 2011 with parallel upper and lower surfaces, which is the same as the sleeper structure used in the straight section.

[0062] It is understood that in the extension direction of the pipeline 1, there are multiple arc-shaped channels 104 arranged at intervals. By adjusting the position of the sliding parts in each arc-shaped channel 104, the tilt angle of the suspended running surface of the suspended sleeper 201 after installation can be adjusted accordingly, so as to achieve flexible adjustment of the tilt angle of the suspended running surface between zero degrees and the superelevation angle of the curve.

[0063] In actual installation, the aforementioned pipe 1 with arc-shaped grooves 104 can be used along the entire track structure, or it can be used only in curved sections and transition sections, thereby saving on track structure construction costs. In curved sections and transition sections, by adjusting the installation position of the suspended sleepers 201, the superelevation of the track structure and smooth transitions can be achieved.

[0064] Example 4: In this embodiment, the superelevation of the curve is achieved by using a pre-embedded sleeve 103 at the top of the pipe 1 in conjunction with a separately provided sleeper connector 205.

[0065] Specifically, in the curved section, multiple sleeve groups are longitudinally arranged at the top of pipe 1, and each sleeve group includes multiple pre-embedded sleeves 103 arranged circumferentially at intervals, such as... Figure 9 As shown.

[0066] Accordingly, in this embodiment, the top of the pipe 1 does not have an installation surface for fixing the sleeper, and the suspended sleeper 201 is a conventional sleeper 2011 (the sleeper installation surface is parallel to the suspended installation surface). At this time, a sleeper connector 205 is provided between the suspended sleeper 201 and the top of the pipe 1. The top of the sleeper connector 205 is an arc surface, which is used to contact and match the arc-shaped inner wall surface of the top of the pipe 1, and its bottom is a flat surface, which is used to contact and connect with the sleeper installation surface of the suspended sleeper 201.

[0067] In actual installation, the top arc surface of the sleeper connector 205 is connected to the pre-embedded sleeve 103 at the top of the pipe 1 via the fastener 4. By replacing the pre-embedded sleeve 103 connected to the sleeper connector 205 in the circumferential direction, the inclination angle of the bottom flat surface of the sleeper connector 205 relative to the horizontal plane can be changed accordingly, thereby achieving the purpose of ultra-high design.

[0068] It is understandable that multiple sleeve groups are also set at intervals in the extension direction of pipeline 1 (transition section area). By adjusting the circumferential installation position of each sleeper connector 205, the tilt angle of the suspended running surface of the suspended sleeper 201 after installation can be adjusted accordingly, so as to achieve flexible adjustment of the tilt angle of the suspended running surface between zero degrees and the superelevation of the curve.

[0069] Based on the descriptions in the four embodiments above, it is easy to see that the track structure in the preferred embodiments has multiple ways to achieve superelevation of curves, and all of these methods are relatively simple and easy to construct while effectively ensuring the service accuracy of the track system.

[0070] Furthermore, the transition section effectively enables a smooth transition of the suspended running surface between straight and curved sections, ensuring the stability and reliability of the rail vehicle operation.

[0071] In summary, the transition section between the straight and curved segments forms a suspended running surface with a variable inclination angle. Its inclination angle relative to the horizontal plane continuously changes from zero degrees at the end connecting the straight segment to a superelevation at the end connecting the curved segment. As for the implementation method of the transition section, it can be selected based on the methods described in the four embodiments above, or multiple implementation methods can be used simultaneously in the same track structure to meet the design requirements for a smooth transition in different node areas; this will not be elaborated upon here.

[0072] Furthermore, for the guide rail assembly 3 in the preferred embodiment, its track bed 301 can be formed simultaneously during the prefabrication of the pipe 1, that is, the track bed 301 is formed integrally with the pipe 1, or it can be cast in place at the bottom of the inner cavity of the pipe 1 during the construction of the pipe 1, which will not be elaborated here.

[0073] More preferably, a drainage ditch 304 of a certain depth extending longitudinally is preferably provided in the middle of the top surface of the track bed 301. In this case, the guide sleepers 302 are preferably short sleepers disposed on both sides of the drainage ditch 304, such as... Figure 3 As shown.

[0074] Of course, depending on the actual setup requirements, it is preferable to provide a drainage ditch 304 of a certain depth and extending longitudinally on at least one side of the track bed 301. In this case, the guide sleeper 302 is preferably a long sleeper that extends laterally, such as... Figure 10 As shown.

[0075] In addition, in actual installation, it is preferable to reserve mounting positions for installing contact rail assemblies (not shown in the figure) on at least some of the guide sleepers 302, so that the contact rail adapted to the tubular rail vehicle 5 can be installed longitudinally on multiple guide sleepers 302 through multiple mounting brackets.

[0076] It is understandable that the aforementioned contact rail assembly needs to be configured to match the current collection assembly on the tubular rail vehicle, which will not be elaborated here.

[0077] Furthermore, as another aspect of the present invention, a construction method for the aforementioned track structure is also provided, wherein the construction steps of the construction method are preferably as follows: Figure 11 As shown, and preferably including the following processes: (1) Carry out the construction of pipeline 1 and determine the construction plan of suspension rail assembly 2 and guide rail assembly 3 in straight and curved sections; Specifically, during construction preparation, it can include the acceptance of the underground works and the acceptance of the track panel upon arrival at the site, as well as the measurement of construction deviations, such as the measurement of pipeline deviations and embedded part deviations, and the adjustment of subsequent construction plans based on the measurement results.

[0078] (2) Construction of the suspension rail assembly 2: Multiple sleepers spaced longitudinally, paired suspended rails, and an induction plate 203 placed between the two suspended rails are combined to form a suspended rail panel.

[0079] In actual construction, the combination and installation of suspended track panels can be carried out during the construction preparation stage, or they can be assembled on the construction site and then transported and hoisted.

[0080] The suspended track is hoisted and laid inside pipe 1 to form a longitudinally extending suspended running surface.

[0081] More specifically, the preferred procedures for hoisting and installing the suspended track panels include the following: First, calculate the construction coordinates of the suspended rail 202 and determine the reference for the suspended rail 202; Transporting and hoisting the suspended track panels; The suspension track panel was roughly laid and the fasteners and related accessories were installed to complete the superelevation setting of the curved section. Fine-tuning and fixing of the suspended rail panel are carried out to complete the construction and installation of the suspended rail assembly 2 in the pipeline 1.

[0082] (3) Construction of guide rail assembly 3: Guide sleepers 302 and paired rails 303 are sequentially installed on the cast-in-place or precast track bed 301 at the bottom of the inner cavity of the pipe 1 to form a guide running surface for the pipe rail vehicle 5; thereafter, the guide running surface is adjusted to be parallel to the suspended running surface.

[0083] More specifically, taking cast-in-place track bed 301 as an example, its construction process preferably includes: Perform basic cleaning of the bottom of the inner cavity of pipe 1; Install the track-laying gantry crane's traveling rails and transport the necessary accessories (such as reinforcing bars and bindings) for the 301 track bed construction. The steel mesh of the track bed 301 is tied and the track bed 301 is cast in place. Preferably, the formwork with drainage ditch 304 is installed during the construction process, and the track bed 301 with drainage ditch 304 is constructed accordingly.

[0084] The guide sleepers 302 and the paired rails 303 are installed on the track bed 301. During the above installation process, the guide sleepers 302 and the rails 303 can be installed separately on the track bed 301, or they can be installed as a whole by hoisting in advance as guide rail panels. This will not be elaborated here.

[0085] After completing the aforementioned process, the suspended running surface is coarsely and finely adjusted according to the paired rails 303, and finally the suspended running surface and the guide running surface are brought to the design position.

[0086] (4) Carry out the construction of other supporting facilities for the pipeline rail transportation system (such as the installation of the contact rail mounting bracket and the construction of the contact rail) and the overall adjustment of the transportation system.

[0087] The track structure applicable to the tubular rail transport system in this invention is simple in structure and convenient to construct. It can effectively meet the engineering application requirements of the tubular rail transport system, ensure the stability, reliability and safety of the operation of the tubular rail vehicles, simplify the design and construction of turnout structures and superelevation structures on curves in the tubular rail transport system, reduce the construction and operation costs of the tubular rail transport system, and promote the development and application of tubular rail logistics transport technology.

[0088] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements 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 track structure suitable for a tubular rail transport system, characterized in that, This includes a pipe, a suspension rail assembly positioned at the top of the pipe's inner cavity, and a guide rail assembly positioned at the bottom of the pipe's inner cavity; wherein: The suspension rail assembly is used to achieve the suspension and traction of the tube rail vehicle. It includes multiple suspension sleepers spaced apart in the longitudinal direction of the tube, two suspension rails respectively located at both ends of the suspension sleepers and extending longitudinally along the tube, and an induction plate located between the two suspension rails and extending longitudinally. The induction plate is installed in the middle of the suspension sleepers, and each suspension sleeper is installed at the top of the tube cavity with a connector. The guide rail assembly is used to realize the unloading, guidance and switching of tubular rail vehicles. It includes a track bed, guide sleepers set on the track bed, and pairs of rails fixed to the guide sleepers by fasteners. The suspension rail assembly forms a suspension travel surface, the guide rail assembly forms a guide travel surface, and the suspension travel surface and the guide travel surface are always parallel to each other.

2. The track structure for a tubular rail transport system according to claim 1, characterized in that, This includes straight segments with a perfectly straight axis and curved segments with a bent axis; among which: The suspended travel surface and the guide travel surface in the straight section are both horizontally set; the suspended travel surface and the guide travel surface in the curved section are both inclined at the same angle relative to the horizontal plane.

3. The track structure for a tubular rail transport system according to claim 2, characterized in that, The angle is 2°~8°; and / or In the straight section, the suspended sleeper is connected and fixed to the pre-embedded sleeve at the top of the inner cavity of the pipe by fastener connecting bolts; and / or A drainage ditch of a certain depth and extending longitudinally is provided in the middle of the top surface of the track bed or on at least one side of its transverse direction.

4. The track structure for a tubular rail transport system according to claim 2, characterized in that, A transition section is also provided between the straight line segment and the curved segment; In the transition section, the suspended running surface formed at the top of the pipe is a variable inclination running surface. This variable inclination running surface extends longitudinally, and the inclination angle of the variable inclination running surface relative to the horizontal plane changes continuously from zero degrees at one end of the connecting straight section to the superelevation of the curve at one end of the connecting curved section.

5. The track structure applicable to a tubular rail transport system according to any one of claims 2 to 4, characterized in that, In the curved section, the pipe is a prefabricated pipe with an inclined mounting surface prefabricated on the top of its inner cavity. The suspended sleeper is connected and fixed to a pre-embedded sleeve on the inclined mounting surface by fastener bolts.

6. The track structure applicable to a tubular rail transport system according to any one of claims 2 to 4, characterized in that, In the curved section, the suspended sleeper is an irregularly shaped sleeper, which has non-parallel sleeper mounting surfaces and a suspended mounting surface; The sleeper mounting surface is in close contact with the horizontal mounting surface at the top of the pipe cavity, and is connected and fixed to the pre-embedded sleeve on the horizontal mounting surface by fastener connecting bolts; the included angle between the suspended mounting surface and the sleeper mounting surface is equal to the angle of inclination of the suspended running surface relative to the horizontal plane, and both suspended rails and the induction plate are set on the suspended mounting surface.

7. The track structure applicable to a tubular rail transport system according to any one of claims 2 to 4, characterized in that, In the curved section, the top of the pipe is provided with an arc-shaped channel along the circumference, and a sliding member that can slide and be fixed along the channel axis is provided in the arc-shaped channel; the sleeper is connected to the sliding member that has slid into place through a connector that extends into the arc-shaped channel, thereby realizing the inclined setting of the suspended running surface relative to the horizontal plane.

8. The track structure applicable to a tubular rail transport system according to any one of claims 2 to 4, characterized in that, In the curved section, the top of the pipe has an arc-shaped inner wall surface, and multiple sleeve groups are longitudinally arranged on the arc-shaped inner wall surface, with each sleeve group including multiple pre-embedded sleeves arranged circumferentially at intervals; and The suspended sleeper is also provided with a sleeper connector; the top of the sleeper connector is an arc surface, which is used to contact and match the arc-shaped inner wall surface, and the bottom is a flat surface, which is used to contact and connect with the sleeper mounting surface of the suspended sleeper; by changing the circumferential position of the sleeper connector when it is connected at the top of the pipe, the tilt angle of the suspended running surface on the suspended sleeper relative to the horizontal plane can be set.

9. The track structure applicable to a tubular rail transport system according to any one of claims 1 to 4, characterized in that, The suspension track is an F-type track, a π-type track, or a U-type track; and / or The suspension rail assembly also includes an iron core extending longitudinally and disposed below the middle of the suspension sleeper, and the induction plate is installed at the bottom of the iron core; and / or The suspended sleeper is an H-shaped sleeper or a square sleeper.

10. A method for constructing a track structure suitable for a tubular rail transport system, used for constructing the track structure suitable for a tubular rail transport system as described in any one of claims 1 to 9, characterized in that, The process includes the following: (1) Carry out pipeline construction and determine the construction plan for the suspension rail assembly and guide rail assembly in straight and curved sections; (2) Construction of the suspension rail components: Multiple sleepers spaced longitudinally, paired suspended rails, and an induction plate placed between the two suspended rails are combined to form a suspended rail panel. The suspended track is hoisted and laid inside the pipeline to form a longitudinally extending suspended running surface; (3) Construction of the guide rail assembly: Guide sleepers and pairs of rails are sequentially installed on the cast-in-place or precast track bed at the bottom of the pipeline cavity to form a guide running surface, and the guide running surface is adjusted to be parallel to the suspended running surface.

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