Assembly structure for magnetic levitation track beam

Abstract

The utility model discloses an assembly structure for a magnetic levitation track beam. The assembly structure comprises a bottom plate extending in the track direction and a concrete prefabricated part assembled on the bottom plate. A suspension groove is formed in the top face of the concrete prefabricated part, an assembly block is fixed to the bottom of the concrete prefabricated part, and an assembly groove matched with the assembly block is formed in the top face of the bottom plate. The assembly block is located below the suspension groove, and the assembly block is detachably connected with the assembly groove. The utility model aims to provide the assembly structure for the magnetic levitation track beam, so as to solve the problems that the assembly structure of the magnetic levitation track beam in the prior art is complicated and the component segmentation is too small, and achieve the purposes of reducing the assembly difficulty and improving the integrity and the stability after assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic levitation tracks, in particular to an assembly structure for magnetic levitation track beams. Background Art

[0002] Track beams are a crucial component of maglev tracks. They are beam- or plate-type structures that serve as the functional surface for the track, bearing train loads and transferring them to the supporting structure. In other words, maglev track beams fulfill the dual functions of traditional railway beams and rails. Compared to traditional rail trains, maglev trains require even higher precision for track beams.

[0003] In the field of high-speed maglev, the distance between the train's magnets and the magnets on the track beam directly affects the variation in magnetic levitation force. To ensure a smooth balance of lift and drag during takeoff and landing, while also ensuring ride comfort in mid-track sections, the construction precision of traditional maglev track beams is extremely stringent, making it difficult to meet these precision requirements using traditional cast-in-place construction methods. Prior art maglev track beams typically incorporate a large internal magnet module to simultaneously provide forward propulsion and lift for the vehicle above. This type of maglev suffers from the drawbacks of the magnet modules being bulky and difficult to manufacture and install. Furthermore, with the continued in-depth research into ultra-high-speed maglev track technology, its application in certain non-railway transportation sectors is also being considered. This requires the construction of test tracks for extensive engineering testing and verification. However, existing maglev track beams are unable to accommodate the magnet modules required for ultra-high-speed maglev technology, making them unsuitable for use in ultra-high-speed maglev test tracks.

[0004] To address these issues, the applicant pioneered a novel maglev track beam structure and filed patent applications for "Track beam structure and forming method for ultra-high-speed maglev track test section" and "Assembled maglev track beam." However, as research progressed, the applicant discovered that the prefabricated structure in the prior application had a relatively complex base structure, which could lead to insufficient structural stability. Furthermore, the structure suffered from excessively small component divisions, difficulty in ensuring assembly precision, and poor mechanical continuity. Utility Model Content

[0005] The purpose of the utility model is to provide an assembly structure for a maglev track beam, so as to solve the problems of complex assembly structure and too small component division of the maglev track beam in the prior art, thereby reducing the difficulty of assembly and improving the integrity and stability after assembly.

[0006] The utility model is achieved through the following technical solutions:

[0007] The assembly structure for a maglev track beam includes a base plate extending along the track direction and a precast concrete part assembled on the base plate; the precast concrete part has a suspension groove formed on the top surface, an assembly block is fixed to the bottom of the precast concrete part, and an assembly groove matching the assembly block is formed on the top surface of the base plate; the assembly block is located below the suspension groove and is detachably connected to the assembly groove.

[0008] To address the complex assembly structures and overly small component segments of existing maglev track beams, this utility model proposes an assembly structure for maglev track beams, in which the base plate extends along the track. It should be noted that the axial direction in this application refers to the direction extending along the track, and the transverse direction in this application refers to the direction extending perpendicular to the track in a horizontal plane. In this application, the precast concrete components are provided with suspension grooves, resulting in a U-shaped cross-section.

[0009] The base plate in this application can be cast on-site using prefabricated concrete components, making it a semi-assembled structure. Compared to the fully assembled structures of the prior art, this application has only one prefabricated component, the prefabricated concrete component, which reduces assembly difficulty, improves assembly precision, and thus enhances the mechanical continuity of the track beam. Furthermore, this application optimizes the base structure, with a flat base plate, which reduces the difficulty of setting up formwork on-site and facilitates rapid on-site casting and molding.

[0010] When the prefabricated concrete parts need to be assembled, they are hoisted above the base plate, with the assembly blocks facing the assembly slots, the prefabricated concrete parts are lowered, and then the assembly blocks and the assembly slots are connected.

[0011] Furthermore, the bottom of the suspension groove is provided with a plurality of first connecting holes extending through the bottom of the assembly block, and a first internally threaded sleeve corresponding to the first connecting holes is provided in the assembly groove; the assembly block and the assembly groove are connected by a first bolt matching the first internally threaded sleeve.

[0012] In this solution, the first connecting holes penetrate the concrete prefabricated part and the assembly block in sequence from the bottom of the suspension groove; when the assembly block is located in the assembly groove, each first connecting hole is opposite to a first internally threaded sleeve, and a first bolt is screwed into it and tightened, thereby locking the assembly block in the longitudinal direction and realizing the assembly between the concrete prefabricated part and the base plate.

[0013] Preferably, the first internally threaded sleeve is pre-buried in the bottom of the assembly groove.

[0014] Furthermore, it also includes pads located on both sides of the assembly block, the pads are detachably connected to the assembly block and / or the prefabricated concrete parts; the bottom height of the pads is equal to or lower than the bottom height of the assembly block.

[0015] The precast concrete parts are the core part of the high-speed maglev track beam. Their end faces need to be assembled with other precast concrete parts, and their sides may need to be installed with other components in the later stage. Therefore, during the transportation process of the precast parts, they should be placed vertically with the bottom facing down. However, the precast concrete parts in this application have assembly blocks at the bottom, which are very easy to wear during transportation, and in serious cases, even interfere with the assembly work on site. For this reason, this solution also provides pads on both sides of the assembly block to temporarily connect the pads with the assembly block and / or the precast concrete parts; because the bottom height of the pads is equal to or lower than the bottom height of the assembly block, the pads can protect the assembly block during vertical transportation, reduce the degree of wear of the assembly block, and ensure that the assembly is completed quickly on site.

[0016] Furthermore, second internally threaded sleeves are embedded in both lateral sides of the assembly block; the spacer block is connected to the assembly block via a second bolt that matches the second internally threaded sleeve. The spacer block is provided with a second connecting hole that matches the second internally threaded sleeve, and the second connecting hole is used for the second bolt to pass through.

[0017] This solution uses a second bolt to achieve a detachable connection between the spacer and the assembly block. When the spacer is needed, the second bolt is screwed into the second connection hole until it fully enters the second internally threaded sleeve and then tightened. When the spacer is no longer needed, the second bolt is removed.

[0018] Furthermore, third connecting holes are preset on both lateral sides of the base plate, and the third connecting holes are connected to the assembly slot and are used for the second bolt to pass through; when the assembly block is located in the assembly slot, the third connecting hole is opposite to the second internal threaded sleeve.

[0019] During on-site assembly, the second bolt previously removed from the pad can be retained in place; after the assembly block enters the assembly groove, the second bolt is screwed into the third connection holes on both sides of the base plate, and the second bolt is re-entered into the second internally threaded sleeve in the same side direction and tightened, thereby locking the assembly block laterally. By repeatedly using the second bolt and the second internally threaded sleeve, the assembly stability between the concrete prefabricated part and the base plate can be further improved.

[0020] Furthermore, the assembly block further includes a plurality of grouting channels located inside the assembly block, one end of the grouting channel being connected to the interior of the second internally threaded sleeve and the other end being connected to the first connecting hole. All first connecting holes are connected to the second internally threaded sleeve through the grouting channel.

[0021] This solution uses several grouting channels to achieve communication between the second internally threaded sleeve and each first connecting hole; before screwing the second bolt into the third connecting hole, grouting can be performed through the third connecting hole first, so that concrete is squeezed into the second internally threaded sleeve and then enters the first connecting hole through each grouting channel, and then the second bolt is immediately installed. After the concrete solidifies, the first bolt and the second bolt can be consolidated at the same time through a single grouting operation, thereby further improving the structural stability and mechanical continuity of this application.

[0022] Furthermore, the top of the prefabricated concrete part has a positioning surface; along the axial direction of the bottom plate, a positioning groove is provided at one end of the positioning surface and a positioning protrusion is provided at the other end, and the positioning groove and the positioning protrusion match each other.

[0023] Adjacent precast concrete parts are assembled by inserting positioning protrusions into positioning grooves. Both the positioning grooves and positioning protrusions are located on the top surface, ensuring they do not interfere with the hoisting assembly of the present application. Furthermore, those skilled in the art will appreciate that the stepped top of the maglev track beam has multiple top surfaces at different heights; in this solution, only one of these surfaces can be used as the positioning surface.

[0024] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0025] 1. The utility model is used for the assembly structure of the magnetic levitation track beam, which is conducive to reducing the assembly difficulty and improving the assembly accuracy, thereby improving the mechanical continuity performance of the track beam and improving the integrity and stability after assembly.

[0026] 2. The utility model is used for the assembly structure of the maglev track beam, which optimizes the bottom structure of the assembled maglev track beam and can reduce the difficulty of on-site operations.

[0027] 3. The utility model is used for the assembly structure of the maglev track beam. During the vertical transportation process, the assembly blocks can be protected by the pads, thereby reducing the wear of the assembly blocks and ensuring that the assembly can be completed quickly on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0029] Figure 1 A cross-sectional view of a specific embodiment of the present utility model;

[0030] Figure 2 It is a structural schematic diagram of a concrete prefabricated part in a specific embodiment of the present utility model.

[0031] Markings and corresponding parts names in the accompanying drawings:

[0032] 1-base plate, 3-concrete precast part, 4-advance groove, 5-suspension groove, 7-assembly block, 8-assembly groove, 9-first internally threaded sleeve, 10-first bolt, 11-pad, 12-second internally threaded sleeve, 13-second bolt, 14-third connecting hole, 15-grouting channel, 16-positioning surface, 17-positioning groove, 18-positioning protrusion, 19-first connecting hole. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0034] Example 1:

[0035] like Figure 1 and Figure 2 The assembly structure for the maglev track beam shown includes a propulsion groove 4, a suspension groove 5, a base plate 1 extending along the track direction, and two rows of precast concrete parts 3 assembled on the base plate 1 and distributed in a mirror image along the axial direction of the base plate 1. The propulsion groove 4 is formed between the two rows of precast concrete parts 3, and the suspension groove 5 is provided on the precast concrete parts 3; along the axial direction of the base plate 1, adjacent precast concrete parts 3 are spliced with each other.

[0036] The precast concrete part 3 is as follows Figure 2 As shown, a positioning surface 16 is provided on its top, and the positioning surface 16 is located on one side of the suspension groove 5 toward the transverse outer side of the base plate 1; along the axial direction of the base plate 1, a positioning groove 17 is provided at one end of the positioning surface 16 and a positioning protrusion 18 is provided at the other end, and the positioning groove 17 and the positioning protrusion 18 match each other.

[0037] In this embodiment, an assembly block 7 is fixed to the bottom of the precast concrete part 3, and an assembly groove 8 matching the assembly block 7 is provided on the top surface of the base plate 1; the assembly block 7 is located below the suspension groove 5, and the assembly block 7 is detachably connected to the assembly groove 8.

[0038] In this embodiment, both the assembly block 7 and the assembly groove 8 are square.

[0039] It should be noted that in Figure 1 Two prefabricated concrete parts 3 are shown in FIG. 1 , wherein the prefabricated concrete part 3 on the left has been assembled with the base plate 1 , and the prefabricated concrete part 3 on the right has not been assembled yet.

[0040] Example 2:

[0041] A structure for assembling a magnetic levitation track beam. Based on Example 1, the bottom of the suspension groove 5 is provided with a plurality of first connecting holes 19 extending through the bottom of the assembly block 7. The bottom of the assembly groove 8 is pre-embedded with first internally threaded sleeves 9 corresponding one-to-one with the first connecting holes 19. The assembly block 7 is connected to the assembly groove 8 by a first bolt 10 matching the first internally threaded sleeve 9.

[0042] It also includes pads 11 located on both sides of the assembly block 7 in the transverse direction. The pads 11 are detachably connected to the assembly block 7 . The bottom height of the pads 11 is lower than the bottom height of the assembly block 7 .

[0043] Second internally threaded sleeves 12 are embedded on both lateral sides of the assembly block 7 , and a second connecting hole matching the second internally threaded sleeve 12 is provided on the cushion block 11 ; the cushion block 11 and the assembly block 7 are connected via second bolts 13 matching the second internally threaded sleeve 12 .

[0044] The base plate 1 is provided with third connecting holes 14 on both lateral sides, the third connecting holes 14 being connected to the assembly groove 8 and being used for the second bolt 13 to pass through; when the assembly block 7 is located in the assembly groove 8, the third connecting holes 14 are opposite to the second internally threaded sleeve 12.

[0045] It also includes a plurality of grouting channels 15 located inside the assembly block 7, and the grouting channels 15 correspond one-to-one to the first connecting holes 19; one end of the grouting channel 15 is connected to the inside of the second internally threaded sleeve 12, and the other end is connected to the corresponding first connecting hole 19.

[0046] This embodiment is assembled by the following method:

[0047] The cast-in-place base plate 1 is arranged by the template to obtain the assembly groove 8 and the third connecting hole 14, and the first internal threaded sleeve 9 is embedded in advance;

[0048] The precast concrete parts 3 are hoisted in sequence, assembled on the base plate 1 , and two adjacent precast concrete parts 3 are spliced together.

[0049] Specifically, the method of assembling the prefabricated concrete part 3 onto the base plate 1 includes:

[0050] When the prefabricated concrete part 3 is formed and shipped out of the factory, it is connected to the pads 11 on both sides of the assembly block 7 by the second bolts 13 and transported to the work site;

[0051] The prefabricated concrete part 3 is lifted at the work site until the pad 11 is off the ground, and the second bolt 13 is removed for standby use. The pad 11 can be recycled.

[0052] The assembly block 7 is lowered by a crane into the assembly groove 8 corresponding to the top surface of the base plate 1. During the lowering process, if there is a prefabricated concrete part 3 that has already been assembled next to the current prefabricated concrete part 3, the positioning protrusion 18 of the current prefabricated concrete part 3 is inserted into the positioning groove 17 of the prefabricated concrete part 3 that has already been assembled next to it, or the positioning groove 17 of the current prefabricated concrete part 3 is gradually inserted into the positioning protrusion 18 of the prefabricated concrete part 3 that has already been assembled next to it.

[0053] The staff enters the suspension tank 5 and screws the first bolt 10 into the first connecting hole 19 in the suspension tank 5 until the first bolt 10 enters the first internal threaded sleeve 9 embedded in the bottom of the assembly groove 8, and tightens the first bolt 10 with a nut or cap.

[0054] Insert the grouting pipe into the third connecting hole 14 on the outside of the base plate 1 and into the second internally threaded sleeve 12 on the side of the assembly block 7; seal the outer end of the third connecting hole 14 with a plug without interfering with the normal operation of the grouting pipe, and inject concrete into the grouting pipe until the grouting pressure reaches the preset pressure;

[0055] Unblock the outer end of the third connecting hole 14 , screw the previously disassembled spare second bolt 13 into the third connecting hole 14 until the second bolt 13 enters the second internally threaded sleeve 12 , and tighten the second bolt 13 .

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or device. In addition, the term "connected" as used in this document, unless otherwise specified, may refer to a direct connection or an indirect connection via other components.

[0057] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An assembly structure for a maglev track beam, characterized in that: The invention comprises a base plate (1) extending in the direction of a track, and a prefabricated concrete part (3) assembled on the base plate (1); a suspension groove (5) is provided on the top surface of the prefabricated concrete part (3); an assembly block (7) is fixed to the bottom of the prefabricated concrete part (3); and an assembly groove (8) matching the assembly block (7) is provided on the top surface of the base plate (1); the assembly block (7) is located below the suspension groove (5), and the assembly block (7) and the assembly groove (8) are detachably connected.

2. The assembly structure for the maglev track beam according to claim 1, characterized in that: The bottom of the suspension groove (5) is provided with a plurality of first connection holes (19) extending through the bottom of the assembly block (7); first internally threaded sleeves (9) corresponding one-to-one to the first connection holes (19) are provided in the assembly groove (8); the assembly block (7) and the assembly groove (8) are connected via first bolts (10) matching the first internally threaded sleeves (9).

3. The assembly structure for the maglev track beam according to claim 2, characterized in that: The first internally threaded sleeve (9) is pre-buried in the bottom of the assembly groove (8).

4. The assembly structure for a maglev track beam according to claim 1, characterized in that: It also includes pads (11) located on both sides of the assembly block (7), and the pads (11) are detachably connected to the assembly block (7) and / or the prefabricated concrete component (3); the bottom surface height of the pads (11) is equal to or lower than the bottom surface height of the assembly block (7).

5. The assembly structure for the maglev track beam according to claim 4, characterized in that: Second internally threaded sleeves (12) are pre-buried on both lateral sides of the assembly block (7); the cushion block (11) is connected to the assembly block (7) via second bolts (13) matching the second internally threaded sleeves (12).

6. The assembly structure for the maglev track beam according to claim 5, characterized in that: A second connecting hole matching the second internally threaded sleeve (12) is provided on the cushion block (11), and the second connecting hole is used for a second bolt (13) to pass through.

7. The assembly structure for a maglev track beam according to claim 6, characterized in that: A third connecting hole (14) is preset on both lateral sides of the base plate (1), and the third connecting hole (14) is connected to the assembly groove (8) and is used for the second bolt (13) to pass through; when the assembly block (7) is located in the assembly groove (8), the third connecting hole (14) is opposite to the second internally threaded sleeve (12).

8. The assembly structure for the maglev track beam according to claim 7, characterized in that: It also includes a plurality of grouting channels (15) located inside the assembly block (7); one end of the grouting channel (15) is connected to the inside of the second internally threaded sleeve (12), and the other end is connected to the first connecting hole (19).

9. The assembly structure for a maglev track beam according to claim 8, characterized in that: All first connecting holes (19) are connected to the second internally threaded sleeve (12) through the grouting channel (15).

10. The assembly structure for a maglev track beam according to any one of claims 1 to 9, characterized in that: The top of the prefabricated concrete part (3) has a positioning surface (16); along the axial direction of the bottom plate (1), a positioning groove (17) is provided at one end of the positioning surface (16), and a positioning protrusion (18) is provided at the other end; the positioning groove (17) and the positioning protrusion (18) match each other.

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