High-speed magnetic suspension two-stage fine adjustment track structure

Abstract

The invention provides a high-speed magnetic suspension two-stage fine adjustment track structure which comprises a track plate, a base, a cast-in-place concrete adjusting layer, an adjustable connecting piece and a concrete bearing platform, the lower end of the base is connected to a foundation through the concrete bearing platform, the track plate is arranged above the base, and the base and the track plate are connected through the cast-in-place concrete adjusting layer; the functional area components are installed on the two sides of the track plate through adjustable connecting pieces respectively. According to the high-speed magnetic suspension two-stage fine adjustment track structure, the on-site concrete cast-in-place workload is reduced; meanwhile, in the construction process, two-stage fine adjustment of the track structure can be achieved through the cast-in-place concrete adjusting layer and the two-way adjustable connecting piece; in the operation and maintenance process, fine adjustment is achieved through the two-way adjustable connecting piece, and high smoothness of the track is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of maglev transportation, and in particular relates to a high-speed maglev two-stage fine-tuning track structure. Background Art

[0002] The conventional electromagnetic high-speed maglev vehicle adopts a track-holding method to operate in suspension on the line, which can solve the problems of wheel-rail adhesion, friction, contact current collection, etc. faced by traditional wheel-rail railways, and achieve a speed of 600 kilometers per hour or even higher.

[0003] In view of the special operating mode of conventional electromagnetic high-speed maglev and the interface relationship between vehicles and line track systems, the Shanghai Maglev Demonstration Line built in 2002 in my country adopted a design concept of integrated bridge and track, combining high-precision track structure and bridge through precision-machined connectors to form an integral track beam structure.

[0004] The above-mentioned integral track beam structure places extremely high demands on the manufacturing and processing of the track beam. The deformation and deviation of the beam body need to be strictly controlled during the design, maintenance, machining, and erection of the prestressed steel bars of the beam body. At the same time, during the operation of the line, the line deformation can only be adjusted through the bridge support, which is not conducive to the maintenance of the line and maintaining the high smoothness of the track structure.

[0005] In addition, for areas with high bridge heights, the above-mentioned integral track beam structure has problems such as difficulty in setting up sound barriers and difficulties in rescue and evacuation. Summary of the invention

[0006] In view of this, the present invention aims to propose a high-speed maglev two-stage fine-tuning track structure to solve the problems of the existing integral track beam structure being difficult to manufacture and construct, and difficult to maintain in the later stage.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] A high-speed maglev two-stage fine-tuning track structure comprises a track plate, a base, a cast-in-place concrete adjustment layer, an adjustable connector and a concrete pedestal, wherein the lower end of the base is connected to a foundation via a concrete pedestal, a track plate is arranged above the base, and the base and the track plate are connected via a cast-in-place concrete adjustment layer, and functional area components are installed on both sides of the track plate via adjustable connectors.

[0009] Furthermore, the base and track plate are both prefabricated reinforced concrete structures, and the first connecting steel bars are embedded in the base, the second connecting steel bars are embedded in the track plate, the track plate is provided with a boss groove, the first connecting steel bars and the second connecting steel bars are located in the boss groove, and a cast-in-place concrete adjustment layer is poured around the connecting steel bars, inside the boss groove, at the upper end of the base and at the lower end of the track plate.

[0010] Furthermore, the first connecting steel bars and the second connecting steel bars in the boss groove are connected to each other, and a steel mesh is arranged in the cast-in-place concrete adjustment layer.

[0011] Furthermore, a T-shaped section is arranged on the periphery of the lower end of the base, and the large end surface of the T-shaped section is abutted against the foundation.

[0012] Furthermore, the adjustable connecting part includes an adjusting part frame, an adjusting pad, a nut plate and a screw, a nut or a threaded hole is arranged on the nut plate, the nut plate is fixedly installed to one side of the functional area component, the adjusting part frame is pre-embedded to one side of the track plate, a through hole is arranged on the adjusting part frame, one end of the screw passes through the through hole and is threadedly connected to the nut plate, and an adjusting pad is arranged between the nut plate and the adjusting part frame.

[0013] Furthermore, the cross-section of the adjusting member frame is a U-shaped structure, and one end of the screw is located in the U-shaped structure.

[0014] Furthermore, the perforation is an oblong through hole.

[0015] Furthermore, a mounting groove is provided at the bottom of the U-shaped structure, a locking pad is arranged in the mounting groove, and the outer contour of the locking pad is the same as the inner circle contour of the mounting groove, an adaptation hole is provided in the middle of the locking pad, the outer periphery of the screw is located in the adaptation hole, and one end of the screw is abutted against one side of the locking pad.

[0016] Compared with the prior art, the high-speed maglev two-stage fine-tuning track structure described in the present invention has the following features:

[0017] Beneficial effects:

[0018] (1) The high-speed maglev two-stage fine-tuning track structure described in the present invention reduces the workload of on-site concrete casting. At the same time, during the construction process, the two-stage fine-tuning of the track structure can be achieved through the cast-in-place concrete adjustment layer and the two-way adjustable connectors. During the operation and maintenance process, fine adjustment can be achieved through the two-way adjustable connectors to ensure the high smoothness of the track.

[0019] (2) In the high-speed maglev two-stage fine-tuning track structure described in the present invention, the boss groove is a grouting hole. After the track plate is fine-tuned, the concrete adjustment layer is grouted through the groove grouting hole. Bosses are formed at positions corresponding to the grouting holes. The bosses and the track plate grouting holes engage with each other. At the same time, the embedded steel bars of the track plate and the base make the adjustment layer, the track plate and the base form a whole, thereby ensuring the overall structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 A cross-sectional schematic diagram of a high-speed magnetic levitation two-stage fine-tuning track structure according to an embodiment of the present invention;

[0022] Figure 2 A cross-sectional schematic diagram of a high-speed maglev two-stage fine-tuning track structure according to an embodiment of the present invention applied to a curved track;

[0023] Figure 3 It is a schematic diagram of the structure of the track plate and the adjustable connecting piece according to an embodiment of the present invention;

[0024] Figure 4 is a cross-sectional schematic diagram of an adjustable connecting member according to an embodiment of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the adjustment member framework described in an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1-track plate; 2-base; 3-first connecting steel bar; 4-cast-in-place concrete adjustment layer; 5-adjustable connector; 51-adjustment frame; 52-adjustment pad; 53-nut plate; 54-screw; 55-perforation; 56-locking pad; 6-concrete pedestal; 7-guide plate; 8-slide plate; 9-stator embedded sleeve; 10-stator body; 11-foundation; 12-boss groove; 13-functional area component; 14-second connecting bar. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0032] like Figure 1-Figure 5 As shown, a high-speed maglev two-stage fine-tuning track structure includes a track plate 1, a base 2, a cast-in-place concrete adjustment layer 4, an adjustable connector 5 and a concrete cap. The lower end of the base 2 is connected to a foundation 11 through a concrete cap 6. The foundation 11 of this embodiment is a lower foundation 11 such as a bridge, a tunnel and a roadbed. A track plate 1 is arranged above the base 2, and the base 2 and the track plate 1 are connected through a cast-in-place concrete adjustment layer 4. Functional area components 13 are respectively installed on both sides of the track plate 1 through adjustable connectors 5. Functional parts of the prior art such as a guide plate 7, a sliding plate 8, a stator embedded sleeve 9 and a stator body 10 are respectively installed in the functional area components 13 of this embodiment, which are not repeated here.

[0033] The track structure reduces the workload of on-site concrete casting; at the same time, during the construction process, the two-level fine adjustment of the track structure can be achieved through the cast-in-place concrete adjustment layer 4 and the two-way adjustable connector 5; during the operation and maintenance process, the two-way adjustable connector 5 is used to achieve fine adjustment to ensure the high smoothness of the track. In the subsequent construction process, the method of adjusting the cast-in-place concrete adjustment layer 4 is preferably adopted to achieve the overall smoothness accuracy of the track structure, wherein the track plate 1 and the base 2 functional area components 13 are all longitudinal block structures, wherein the track plate 1 and the base 2 are prefabricated reinforced concrete longitudinal block structures, and the longitudinal theoretical length can be 6.192m, and the functional area components are prefabricated steel components, and the longitudinal theoretical length can be 3.096m, and the block length of each component is reasonably determined according to the requirements of structural mechanical characteristics, track smoothness, transportation convenience, economy, etc.

[0034] The base 2 and the track plate 1 are both prefabricated reinforced concrete structures, and the first connecting steel bar 3 is embedded in the base 2, the track plate 1 is provided with a boss groove 12, and the second connecting bar 14 is embedded in the track plate 1. The first connecting steel bar 3 and the second connecting bar 14 are both located in the boss groove 12. A cast-in-place concrete adjustment layer 4 is poured around the connecting steel bar, in the boss groove 12, at the upper end of the base 2 and at the lower end of the track plate 1. The first connecting bar and the second connecting steel bar in the boss groove (12) are connected to each other. A steel mesh is arranged in the cast-in-place concrete adjustment layer 4. The boss groove 12 is a pouring hole. After the track plate 1 is finely adjusted, the cast-in-place concrete adjustment layer 4 is poured through the groove grouting hole. A boss is formed at the corresponding position of the pouring hole. The boss and the pouring hole of the track plate 1 are engaged with each other. At the same time, the embedded steel bars in the track plate 1 make the adjustment layer and the track plate 1 form a whole, providing the required vertical pull-out resistance and transverse shear resistance for the assembled track structure, thereby ensuring the overall structural strength.

[0035] In practice, the superelevation (cross slope) of the track structure in the curved section can be achieved by simply adjusting the size of the cast-in-place concrete adjustment layer 4. The superelevation slope rate can be achieved by changing the layout position of the adjustable connector 5 on the track plate 1, such as Figure 2 Shown is the cross-sectional structure of a high-speed maglev two-stage fine-tuning track structure applied to a curved track.

[0036] A T-shaped section is arranged on the periphery of the lower end of the base 2, and the large end face of the T-shaped section is abutted against the foundation 11. When implemented, the cross-sectional shape within a range of the longitudinal end of the base 2 is an inverted T-shape to ensure the stability of the base 2, and the remaining cross-sectional shapes of the base 2 are rectangular. In summary, if any component is damaged, the impact on the remaining components during repair and replacement is small, and even if the base 2 is removed, the lower foundation 11 structure such as bridges, tunnels, and roadbeds will not be damaged, thereby realizing the separation of the track structure and the foundation 11 bearing structure such as bridges, roadbeds, and tunnels, and is suitable for different foundation 11 structures such as bridges, roadbeds, and tunnels; by setting an adjustable connector 5, the track structure can be adjusted in both directions with high precision during construction and operation; the use of prefabricated assembly technology makes manufacturing, transportation, installation, maintenance and repair more convenient, which can improve the construction quality and precision of the track structure and reduce the amount of masonry work in on-site construction.

[0037] like Figure 3 and Figure 5As shown, the adjustable connector 5 can realize bidirectional fine adjustment of the assembled track structure during construction and operation and maintenance to maintain the high smoothness of the track. The adjustable connector 5 in this embodiment includes an adjusting member frame 51, an adjusting pad 52, a nut plate 53 and a screw 54. Nuts or threaded holes are set on the nut plate 53. The nut plate 53 is fixedly installed to one side of the functional area component 13. The adjusting member frame 51 is pre-embedded to one side of the track plate 1. A through hole 55 is provided on the adjusting member frame 51. One end of the screw 54 passes through the through hole 55 and is threadedly connected to the nut plate 53, and an adjusting pad 52 is set between the nut plate 53 and the adjusting member frame 51.

[0038] During implementation, the cross section of the adjusting member frame 51 is a U-shaped structure, one end of the screw 54 is located in the U-shaped structure, the through hole 55 is an oblong through hole, so that the screw 54 can slide in the oblong through hole, and circular holes are opened on the adjusting pad 52 and the nut plate 53. The adjusting member frame 51, the adjusting pad 52, and the nut plate 53 are connected in series through the screw 54, wherein the thickness of the adjusting pad 52 is used to adjust the distance between the functional area component 13 and the track plate 1, and the through hole 55 is used to adjust the relative distance between the functional area component 13 and the track plate 1. For the height, and in order to limit the relative position of the screw 54, a mounting groove is provided at the bottom of the U-shaped structure, and a locking pad 56 is arranged in the mounting groove, and the outer contour of the locking pad 56 is the same as the inner circle contour of the mounting groove, and an adapter hole is provided in the middle of the locking pad 56, the outer periphery of the screw 54 is located in the adapter hole, and one end of the screw 54 is abutted against one side of the locking pad 56, and the opening position of the adapter hole on the locking pad 56 is adjusted during implementation, so as to realize the adjustment of the relative height between the functional area component 13 and the track plate 1.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed magnetic levitation two-stage fine-tuning track structure, characterized in that: The invention comprises a track plate (1), a base (2), a cast-in-place concrete adjustment layer (4), an adjustable connection piece (5) and a concrete cap, wherein the lower end of the base (2) is connected to a foundation (11) via a concrete cap (6), the track plate (1) is arranged above the base (2), and the base (2) and the track plate (1) are connected via the cast-in-place concrete adjustment layer (4), and functional area components (13) are respectively installed on both sides of the track plate (1) via the adjustable connection piece (5).

2. A high-speed maglev two-stage fine-tuning track structure according to claim 1, characterized in that: The base (2) and the track plate (1) are both prefabricated reinforced concrete structures, and a first connecting steel bar (3) is pre-embedded on the base (2), and a second connecting steel bar (14) is pre-embedded in the track plate (1). The track plate (1) is provided with a boss groove (12), and the first connecting steel bar (3) and the second connecting steel bar (14) are located in the boss groove (12). A cast-in-place concrete adjustment layer (4) is cast around the connecting steel bars, in the boss groove (12), at the upper end of the base (2) and at the lower end of the track plate (1).

3. A high-speed maglev two-stage fine-tuning track structure according to claim 2, characterized in that: The first connecting steel bar (3) and the second connecting steel bar (14) in the boss groove (12) are connected to each other, and a steel mesh is arranged in the cast-in-place concrete adjustment layer (4).

4. A high-speed maglev two-stage fine-tuning track structure according to claim 1, characterized in that: A T-shaped section is arranged on the periphery of the lower end of the base (2), and the large end surface of the T-shaped section abuts against the foundation (11).

5. A high-speed maglev two-stage fine-tuning track structure according to claim 1, characterized in that: The adjustable connecting member (5) comprises an adjusting member frame (51), an adjusting pad (52), a nut plate (53) and a screw rod (54); a nut or a threaded hole is arranged on the nut plate (53); the nut plate (53) is fixedly mounted on one side of the functional area component (13); the adjusting member frame (51) is pre-buried on one side of the track plate (1); a through hole (55) is arranged on the adjusting member frame (51); one end of the screw rod (54) passes through the through hole (55) and is then threadedly connected to the nut plate (53); and an adjusting pad (52) is arranged between the nut plate (53) and the adjusting member frame (51).

6. A high-speed maglev two-stage fine-tuning track structure according to claim 5, characterized in that: The cross section of the adjusting member frame (51) is a U-shaped structure, and one end of the screw rod (54) is located in the U-shaped structure.

7. A high-speed maglev two-stage fine-tuning track structure according to claim 5, characterized in that: The perforation (55) is an oblong through hole.

8. A high-speed maglev two-stage fine-tuning track structure according to claim 6, characterized in that: A mounting groove is provided at the bottom of the U-shaped structure, a locking pad (56) is arranged in the mounting groove, and the outer contour of the locking pad (56) is the same as the inner circle contour of the mounting groove, an adapting hole is provided in the middle of the locking pad (56), the outer periphery of the screw rod (54) is located in the adapting hole, and one end of the screw rod (54) abuts against one side of the locking pad (56).

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