Low-vacuum pipeline of high-speed train

Abstract

The utility model provides a high-speed train low-vacuum pipeline which comprises a U-shaped beam formed by assembling a plurality of sets of prefabricated sections, the prefabricated sections are detachably connected through first connecting assemblies, the outer surface of the U-shaped beam is wrapped with a first steel plate layer, and the high-speed train low-vacuum pipeline further comprises two sets of prefabricated pieces arranged oppositely. The two groups of prefabricated sheets are lapped on the U-shaped beam in an arch shape and are fixedly connected with the U-shaped beam, the two groups of prefabricated sheets are matched with the U-shaped beam to form a train channel, second steel plate layers are arranged on the inner side surfaces of the two groups of prefabricated sheets, and the two groups of second steel plate layers are detachably connected through a second connecting assembly. The U-shaped beam and the top semicircular pipe in the low-vacuum channel are both formed through prefabrication, the whole assembling process is convenient and fast, the parameter requirement for construction equipment is lowered, meanwhile, the prefabricated sections and the prefabricated pieces are convenient to transport, and the construction efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of vacuum train, concretely relates to a high -speed train low vacuum pipeline. BACKGROUND

[0002] The core of high-speed vacuum pipeline train technology is to create a low air pressure environment close to vacuum in a closed pipeline to reduce the air resistance and friction resistance received by the train during running. This unique operating environment enables the train to run at super high speed. In theory, when the air pressure in the pipeline is reduced to a certain extent, the running speed of the train will no longer be limited by air resistance, so it is expected to achieve a speed of thousands of kilometers per hour or even higher. The highest design speed of the system currently under development has reached 1000 kilometers per hour. Among them, the low vacuum pipeline is an essential structure for the operation of high-speed trains.

[0003] A high-speed train vacuum pipeline and mounting assembly are provided in Chinese patent application No. CN111235966B. The reasonable arrangement of the connection in the vacuum pipeline can ensure the installation flatness. Multiple welds are arranged inside and outside the vacuum pipeline at the lap joint to ensure the sealing performance. After the installation of the adjacent sectional vacuum pipeline assembly, it is fixed with tension bolts to increase the connection strength of the sectional vacuum pipeline assembly and ensure that it will not be torn when it expands and contracts. The length can be adjusted according to actual needs.

[0004] However, in the process of constructing the low vacuum pipeline of the high-speed train, it is found that the existing vacuum pipeline is mostly assembled by pouring a whole block of concrete U-shaped beam and semicircular steel plate. This method makes the transportation and assembly of each component of the low vacuum pipeline more inconvenient, thereby reducing the construction efficiency. To solve the above technical problems, a high-speed train low vacuum pipeline is proposed. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model provides a high-speed train low vacuum pipeline to solve the technical problem that the existing vacuum pipeline is mostly assembled by pouring a whole block of concrete U-shaped beam and semicircular steel plate, which makes the transportation and assembly of each component of the low vacuum pipeline more inconvenient, thereby reducing the construction efficiency.

[0006] To achieve the above purpose, the utility model provides the following technical scheme. A high-speed train low vacuum pipeline comprises:

[0007] The U-shaped beam is assembled by a plurality of prefabricated segments, and the plurality of prefabricated segments are detachably connected by a first connecting assembly.

[0008] The first steel plate layer is wrapped around the outer surface of the U-shaped beam.

[0009] The prefabricated pieces are arranged in two groups oppositely and are arched and overlapped on the U-shaped beam and fixedly connected with the U-shaped beam, and the two groups of prefabricated pieces are matched with the U-shaped beam to form a train passage.

[0010] The second steel plate layers are arranged in two groups and are arranged on the inner side of the prefabricated pieces, and the two groups of second steel plate layers are detachably connected through the second connecting assembly.

[0011] In a preferred embodiment, the first connecting assembly comprises connecting bolts, the prefabricated segments are provided with a plurality of groups of counterbores along the axial lines thereof, the connecting bolts are arranged in the counterbores, and the connecting bolts on every two adjacent groups of prefabricated segments are screw-connected at the head and tail ends thereof.

[0012] In a preferred embodiment, the end portions of the second steel plate layers are provided with connecting ribs, and the connecting ribs are connected with the prefabricated segments through first bolts.

[0013] In a preferred embodiment, the second steel plate layers are connected with the prefabricated pieces through second bolts.

[0014] In a preferred embodiment, the gaps between the second steel plate layers and the prefabricated segments are filled with an epoxy resin layer.

[0015] In a preferred embodiment, the second connecting assembly comprises:

[0016] The connecting ribs are arranged in two groups and are arranged at the end portions of the two groups of second steel plate layers, respectively.

[0017] The sealing strips are arranged between the two groups of connecting ribs.

[0018] The U-shaped frames are clamped on the two groups of connecting ribs and are fixedly connected therewith through third bolts.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The low-vacuum pipeline can be hoisted by a plurality of prefabricated segments during assembly, and the first steel plate layer is wrapped outside during assembly to improve the sealing effect, the prefabricated segments are concrete prefabricated components, and the plurality of prefabricated segments are assembled through the first connecting assembly, so that the assembly of the U-shaped beam is more convenient and fast, after the assembly of the U-shaped beam is completed, the two groups of prefabricated segments in each pipeline are hoisted, until they are hoisted onto the U-shaped beam, and then they are fixed on the U-shaped beam, and the assembly of the two groups of prefabricated pieces is completed through the second connecting assembly, the whole assembly process is convenient and fast, and the parameter requirements of the construction equipment are reduced, and the prefabricated segments and the prefabricated pieces are convenient to transport, effectively improving the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the specific embodiment of the present application, the following will be a brief description of the specific embodiment of the drawings needed to use. In all the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0022] Figure 1 The utility model provides a high -speed train low vacuum pipeline's front view;

[0023] Figure 2 The utility model provides a high -speed train low vacuum pipeline's side structure sectional view;

[0024] Figure 3 The utility model provides a high -speed train low vacuum pipeline's cross section schematic view;

[0025] Figure 4 For Figure 1 The enlarged schematic view of a region in the middle;

[0026] Reference signs:

[0027] 1, prefabricated segment; 2, counterbore; 3, connecting bolt; 4, first steel plate layer; 5, epoxy resin layer; 6, second steel plate layer; 7, connecting rib; 8, first bolt; 9, prefabricated piece; 10, second bolt; 11, connecting convex rib; 12, sealing strip; 13, U-shaped frame; 14, third bolt. Specific embodiments

[0028] The following will be a further detailed description of the present application in conjunction with the drawings, it is necessary to point out that the following specific embodiments are only used to further illustrate the present application, can not be understood as the limitation of the scope of the present application, the skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0029] Embodiment:

[0030] As Figure 1 , 2 The utility model provides a high -speed train low vacuum pipeline, including U type roof beam and two groups of opposite arrangement prefabricated piece 9, U type roof beam is assembled by multiple prefabricated segments 1, and multiple prefabricated segments 1 are detachably connected through first connecting assembly, and the outer surface of U type roof beam is wrapped with first steel plate layer 4, and first connecting assembly includes connecting bolt 3, and prefabricated segment 1 is provided with multiple counterbores 2 along its axis, and connecting bolt 3 is arranged in counterbore 2, and the connecting bolt 3 on every adjacent two groups of prefabricated segments 1 is screw connected at the head end.

[0031] The low-vacuum pipeline can be prefabricated by the plurality of prefabricated segments 1 and the prefabricated pieces 9 during construction, so as to facilitate transportation and hoisting, the plurality of prefabricated segments 1 are hoisted to a construction area first, then the connecting bolts 3 on the two adjacent prefabricated segments 1 are screwed at the tail end to quickly assemble the U-shaped beam from the prefabricated segments 1, the whole assembling process is convenient and fast, and the first steel plate layer 4 is wrapped on the outer surface of the U-shaped beam during the assembling process, so as to improve the vacuum sealing effect.

[0032] As shown in Figure 1 , 3 in the embodiment, the two groups of prefabricated pieces 9 are in an arched shape and are fixedly connected to the U-shaped beam, the two groups of prefabricated pieces 9 cooperate with the U-shaped beam to form a train passage, the inner sides of the two groups of prefabricated pieces 9 are provided with the second steel plate layers 6, the end portions of the second steel plate layers 6 are provided with the connecting ribs 7, the connecting ribs 7 are connected to the prefabricated segments 1 through the first bolts 8, the second steel plate layers 6 are connected to the prefabricated pieces 9 through the second bolts 10, and the gap between the second steel plate layers 6 and the prefabricated segments 1 is filled with the epoxy resin layer 5.

[0033] After the U-shaped beam is constructed, the prefabricated pieces 9 are hoisted, the connecting ribs 7 at the bottom of the second steel plate layers 6 on the prefabricated pieces 9 are in contact with the upper edges of the prefabricated segments 1, the prefabricated pieces 9 and the second steel plate layers 6 are fixedly connected through the first bolts 8, the second steel plate layers 6 are fixedly connected to the prefabricated pieces 9 through the second bolts 10 during prefabrication, so as to hoist the whole, the gap between the second steel plate layers 6 and the prefabricated segments 1 is sealed through the epoxy resin layer 5, and the vacuum effect is further improved.

[0034] As shown in Figure 1 , 4 in the embodiment, the two groups of second steel plate layers 6 are detachably connected through the second connecting assembly. The second connecting assembly comprises U-shaped frames 13 and two groups of connecting convex edges 11, the two groups of connecting convex edges 11 are located at the end portions of the two groups of second steel plate layers 6, a sealing strip 12 is arranged between the two groups of connecting convex edges 11, the U-shaped frames 13 are clamped on the two groups of connecting convex edges 11 and are fixedly connected thereto through third bolts 14.

[0035] After the two groups of second steel plate layers 6 are connected to the U-shaped beam, the end portions of the two groups of second steel plate layers 6 are overlapped, the U-shaped frames 13 are clamped on the two groups of connecting convex edges 11 to prevent the two groups of connecting convex edges 11 from being displaced, and finally the U-shaped frames 13 are fixed through the third bolts 14, so that the prefabricated pieces 9 are assembled, the gap between the two groups of connecting convex edges 11 is sealed through the sealing strip 12, and the vacuum performance is improved.

[0036] The specific use mode and beneficial effects of the utility model are as follows:

[0037] The low-vacuum pipeline, when assembled, can be hoisted by multiple groups of prefabricated segments 1, and the first steel plate layer 4 is wrapped outside during the assembly process to improve the sealing effect, the prefabricated segments 1 are concrete prefabricated components, and the multiple groups of prefabricated segments 1 are assembled by mutual screwing of the connecting bolts 3, so that the assembly of the U-shaped beam is more convenient and fast, after the assembly of the U-shaped beam is completed, two groups of prefabricated segments in each pipeline are hoisted, until they are hoisted onto the U-shaped beam, then they are fixed on the U-shaped beam, and the assembly of the two groups of prefabricated segments 9 is completed through the cooperation of the U-shaped frame 13 and the connecting convex edges 11, the whole assembly process is convenient and fast, and the parameter requirements of the construction equipment are reduced, and the prefabricated segments 1 and the prefabricated segments 9 are convenient to transport, effectively improving the construction efficiency.

[0038] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious for those skilled in the art. Therefore, these modifications or improvements made without deviating from the spirit of the utility model all belong to the scope of protection required by the utility model.

Claims

1. A high-speed train low-vacuum tube, characterized in that, The utility model relates to a prefabricated U-shaped beam for train passage, which comprises: a U-shaped beam assembled by a plurality of prefabricated segments (1) which are detachably connected by first connecting assemblies; a first steel plate layer (4) wrapped on the outer surface of the U-shaped beam; two sets of prefabricated pieces (9) arranged oppositely, arched and fixedly connected on the U-shaped beam, and forming a train passage in cooperation with the U-shaped beam; and two sets of second steel plate layers (6) arranged on the inner side of the prefabricated pieces (9) and detachably connected by second connecting assemblies.

2. The low vacuum tube for high-speed train according to claim 1, characterized in that: The first connecting assembly comprises connecting bolts (3), the prefabricated segments (1) are provided with a plurality of counterbores (2) along the axis, the connecting bolts (3) are arranged in the counterbores (2), and the connecting bolts (3) on every two adjacent prefabricated segments (1) are screw-connected at the head and tail.

3. The low vacuum tube of claim 1, wherein: The second steel plate layer (6) is provided with connecting ribs (7) at the end, the connecting ribs (7) are connected with the prefabricated segments (1) by first bolts (8).

4. The low vacuum tube of claim 1, wherein: The second steel plate layer (6) is connected with the prefabricated pieces (9) by second bolts (10).

5. The low vacuum tube of claim 1, wherein: The gap between the second steel plate layer (6) and the prefabricated segments (1) is filled with an epoxy resin layer (5).

6. The low vacuum tube of claim 1, wherein, The second connecting assembly comprises: two sets of connecting ribs (11) arranged at the end of the two sets of second steel plate layers (6) respectively; a sealing strip (12) arranged between the two sets of connecting ribs (11); and a U-shaped bracket (13) clamped on the two sets of connecting ribs (11) and fixedly connected therewith by third bolts (14).

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