High-speed maglev track gap sliding table type adjusting device and adjusting method

Abstract

This invention discloses a sliding table-type adjustment device and method for high-speed maglev track gaps. The adjustment device is disposed between the track slab and the track functional components, and is arranged at intervals along the longitudinal direction of the track. The bottom of the adjustment device is fixedly connected to a support seat protruding from the track slab. The sliding platform i of the adjustment device is fixedly connected to the track functional components through a connecting plate. The adjustment device includes a vertical position adjustment module and a horizontal position adjustment module, which are fixedly connected from top to bottom. This allows for precise position adjustment in both the vertical and horizontal directions of the track, enabling the track functional components to be positioned. The sliding table-type position adjustment device for high-speed maglev tracks of this invention can achieve precise adjustment in both the vertical and horizontal directions of the track, effectively compensating for positional deviations caused by track foundation settlement and deformation, and ensuring sub-millimeter-level smoothness requirements of the track functional surfaces.

Description

Technical Field

[0001] This invention belongs to the field of high-speed maglev rail transit technology, and particularly relates to a high-speed maglev track gap sliding adjustment device and adjustment method. Background Technology

[0002] High-speed maglev transportation, as a new generation of high-speed rail transit technology, has become an important development direction for long-distance trunk line transportation due to its advantages of high speed, safety, and low noise. High track smoothness is a prerequisite for ensuring the safe and stable operation of trains. Compared to traditional high-speed railways, conventional high-speed maglev trains have smaller suspension gaps, requiring sub-millimeter precision control over misalignment of the track stator and guide surfaces, far exceeding the requirements for ballastless tracks in high-speed railways. Therefore, precise control of differential settlement of the foundation has become a core technical issue in the construction and operation of high-speed maglev tracks. Furthermore, after the construction of core functional components such as the long stator, guide plates, and sliding plates of high-speed maglev tracks, restoration can only be achieved through foundation remediation without the availability of fasteners. This foundation remediation method is costly, time-consuming, and affects the operational efficiency of the line. The contradiction between the aforementioned high smoothness requirements and the limitations of existing remediation methods has become a significant technical bottleneck restricting the development of high-speed maglev transportation.

[0003] In engineering practice, the inability to adjust track functional components is a common problem in existing high-speed maglev tracks. This issue not only leads to difficulties in later maintenance and adjustment but also results in insufficient adaptability of current adjustment schemes, becoming a core technical obstacle restricting its widespread application on long-distance trunk lines. Taking the Shanghai demonstration line and the Qingdao test line as examples, when various track structures experience settlement or deformation later on, the only solution is to adjust the bridge supports. This adjustment method involves a large workload, high operational difficulty, and poor versatility, only suitable for elevated and bridge sections, and cannot adapt to the complex operating scenarios of long-distance trunk lines. Currently, there is no dedicated device in the industry that is adapted to the structural characteristics of high-speed maglev tracks, can be temporarily installed, and can achieve precise horizontal and vertical position adjustment of the tracks. Existing solutions such as traditional high-speed railway fastener adjustment, urban rail transit gauge rod adjustment, and ordinary railway tamping treatment are also unapplicable due to insufficient accuracy, adaptability, or stability. Based on this, designing a dedicated high-speed maglev track sliding table-type position adjustment device has significant engineering application value. Summary of the Invention

[0004] This invention provides a high-speed maglev track gap sliding adjustment device and method to solve the technical problems existing in the prior art. It realizes precise adjustment of the high-speed maglev track in two degrees of freedom, horizontal and vertical, meets the use requirements of temporary installation for track adjustment operations, solves the problems of high operation difficulty and limited adaptability of existing track adjustment methods, and adapts to the track smoothness maintenance requirements of complex operation scenarios on long trunk lines.

[0005] To address the problems existing in the background art, the present invention adopts the following technical solution:

[0006] A high-speed maglev track gap sliding adjustment device, wherein the adjustment device is disposed between the track slab and the track functional components and is arranged at intervals along the longitudinal direction of the track;

[0007] The bottom of the adjustment device is fixedly connected to the support seat protruding from the track plate. The sliding platform i of the adjustment device is fixedly connected to the track functional component through a connecting plate. The adjustment device includes a vertical position adjustment module and a horizontal position adjustment module, which are fixedly connected from top to bottom. This allows for precise position adjustment of the track in both vertical and horizontal directions, enabling the track functional component to achieve position adjustment through the adjustment device.

[0008] Furthermore, the vertical position adjustment module includes a fixed base i, a sliding platform i, an upper support, and a moving mechanism; the fixed base i and the upper support are arranged opposite each other in the vertical direction, the moving mechanism is installed between the fixed base i and the upper support, the sliding platform i is installed on the moving mechanism, and the moving mechanism can drive the sliding platform i to move up and down and is self-locking.

[0009] Furthermore, the lateral position adjustment module includes a fixed base ii, a sliding platform ii, a drive shaft, and a gear rack pair. A rack extending laterally is fixedly mounted on the fixed base ii. The sliding platform ii is mounted on the fixed base ii and can move linearly laterally. The drive shaft passes longitudinally through the sliding platform ii and is rotatably connected. A gear is fixedly mounted on the drive shaft. The gear meshes with the rack on the fixed base ii. The drive shaft drives the gear to rotate, causing the gear to roll along the rack, thereby driving the sliding platform ii to achieve precise lateral position adjustment.

[0010] Furthermore, it also includes an adjusting shim and an adjusting component, which are installed between the functional component connector and the track plate, with the adjusting shim located between the adjusting component and the functional component connector. Both the adjusting shim and the adjusting component are detachably and fixedly connected to the functional component connector.

[0011] Furthermore, the moving mechanism includes a lead screw and guide columns. Two guide columns are symmetrically arranged vertically between the upper support and the fixed base i. The lower end of the guide column is fixedly connected to the fixed base i, and the upper end of the guide column is fixedly connected to the upper support. The lead screw is vertically arranged between the fixed base i and the upper support. Its lower end is rotatably connected to the fixed base i, and its upper end passes through the upper support and is connected to the drive motor through a coupling.

[0012] Furthermore, the sliding platform i is sleeved on the guide column, and the lead screw and the sliding platform i form a threaded engagement. The rotational motion of the motor is converted into the rotational motion of the lead screw, thereby driving the sliding platform i to achieve precise adjustment of its vertical position.

[0013] Furthermore, it also includes an intermediate base plate, which is vertically disposed between the fixed base i and the upper support, and its two ends are fixedly connected to the fixed base i and the upper support respectively.

[0014] A method for adjusting the track gap using the aforementioned high-speed maglev track gap sliding table adjustment device includes the following steps:

[0015] Install the connecting plate, fix one end of the connecting plate to the functional component connecting piece, then place the adjusting device on the track section to be adjusted, fix the adjusting device to the support base, and fix the sliding platform i of the adjusting device to the other end of the connecting plate.

[0016] Remove the original adjusting shims, and then use the adjusting device to compensate and precisely adjust the corresponding position of the track according to the measured deviation value. After the adjustment is completed, redetermine the vertical installation position of the functional component connector, adjusting shims and adjusting component according to the vertical adjustment amount of the adjusting device. Then select a new shim with a suitable thickness according to the horizontal adjustment amount and complete the assembly.

[0017] The adjustment device and connecting plate are disassembled in sequence to achieve precise horizontal and vertical position adjustment of the track.

[0018] The beneficial technical effects of this invention are as follows:

[0019] The high-speed maglev track slide-type position adjustment device of this invention can achieve precise adjustment in both the horizontal and vertical directions of the track, effectively compensating for position deviations caused by track foundation settlement and deformation, and ensuring sub-millimeter-level smoothness requirements of the track functional surfaces. The device is adaptable to track structural characteristics and the temporary installation requirements for adjustment operations, with convenient installation and disassembly, reducing the workload and operational difficulty of track adjustment. It overcomes scenario limitations, adapting to various operating scenarios, improving the versatility and adaptability of high-speed maglev track adjustment, and meeting the track smoothness maintenance needs under complex operating scenarios on long-haul trunk lines. Based on track unloaded force analysis, it adopts a combined position adjustment structure of horizontal gear rack and pinion and vertical spiral slide: high horizontal rigidity and impact resistance, high vertical precision and self-locking characteristics, accurately matching the force characteristics in different directions, significantly improving the adjustment accuracy and load-bearing stability of the high-speed maglev track. Attached Figure Description

[0020] Figure 1 A single-side view of the high-speed maglev track slide-type position adjustment device provided in an embodiment of the present invention;

[0021] Figure 2 An overall three-dimensional view of the position adjustment device provided in this embodiment of the invention;

[0022] Figure 3 A three-dimensional view of the vertical position adjustment module provided in this embodiment of the invention;

[0023] Figure 4 A three-dimensional view of the lateral position adjustment module provided in this embodiment of the invention;

[0024] Figure 5 A flowchart illustrating the specific implementation steps of the position adjustment device provided in this embodiment of the invention;

[0025] Figure 6 A cross-sectional view of the connection structure of the position adjustment device provided in an embodiment of the present invention. Detailed Implementation

[0026] The following description, in conjunction with the accompanying drawings, provides a clearer and more complete account of a high-speed maglev track gap sliding adjustment device and method provided by the present invention, and a detailed description is provided in conjunction with the following specific embodiments and comparative examples:

[0027] Example 1

[0028] This embodiment provides a high-speed maglev track gap sliding table type adjustment device. Figure 1 The diagram shows a single-side view of the high-speed maglev track structure and related adjustment devices. The structure on the other side is a complete mirror image of the diagram. The components such as the position adjustment device A, support E, adjustment component N, adjustment shim O, track functional component P, and functional component connector Q are all symmetrically arranged with the longitudinal centerline of the track slab M as the reference.

[0029] Under normal operating conditions, the functional component connector is fixedly installed on the side of the track functional component. An adjusting shim Q is sandwiched between the functional component connector and the adjusting component N fixed to the side of the track slab M. The functional component connector, adjusting shim, and adjusting component are fixedly connected by bolt assemblies. The track functional component includes a stator unit, guide plate, and sliding plate, constructed using a multi-segment assembly along the longitudinal length of the track. It primarily provides high-precision core functional surfaces required for levitation, guidance, drive, and gliding of the high-speed maglev train. The functional component connector and adjusting component mainly connect the track slab M and the track functional component, bearing and transmitting the dynamic and static loads on the track functional component to the track slab M. The adjusting shim is sandwiched between the functional component connector and the adjusting component. By changing its thickness or the number of combinations, it compensates for structural deformation of the track, thereby achieving initial geometric positioning of the track functional component and subsequent fine-tuning and maintenance. During track adjustment operations, the position adjustment device A is installed between the track slab and the track functional component C, spaced apart along the longitudinal direction of the track.

[0030] The bottom of the adjustment device is fixedly connected to the support seat D protruding on the track plate by bolts. The sliding platform i of the adjustment device is fixedly connected to the track functional component by bolts through the connecting plate B, so that the track functional component can be adjusted in position by the adjustment device. The position adjustment device is composed of vertical position adjustment module 1 and horizontal position adjustment module 2 combined vertically, which can realize precise position adjustment in the two degrees of freedom of the track in the horizontal and vertical directions.

[0031] The vertical position adjustment module is located on the upper part of the overall device and includes a fixed base i1-1, a sliding platform i1-2, an upper support 1-3, a lead screw 1-4, a guide column 1-5, an intermediate base plate 1-6, a coupling, and a motor fixing device 1-7. The fixed base i is located at the bottom of the device, and the upper support is located opposite to the fixed base i at the top of the device. Two guide columns are symmetrically arranged vertically between the upper support and the fixed base i, with their lower ends fixedly connected to the fixed base i and their upper ends fixedly connected to the upper support. The sliding platform i is fitted onto the guide columns and can move vertically along the guide columns. The intermediate base plate 1-6 is vertically located between the fixed base i1-1 and the upper support 1-3, with both ends fixedly connected to the fixed base i1-1 and the upper support 1-3, respectively. The lead screw is vertically positioned between the fixed base i and the upper support. Its lower end is rotatably connected to the fixed base i, and its upper end passes through the upper support and is connected to the drive motor through a coupling. The lead screw and the sliding platform i form a threaded engagement. The rotational motion of the motor is converted into the rotational motion of the lead screw, thereby driving the sliding platform i to achieve precise adjustment of its vertical position.

[0032] The lateral position adjustment module is located at the bottom of the overall device and includes a fixed base ii 2-1, a sliding platform ii 2-2, a drive shaft 2-3, and a gear and rack pair 2-4. A rack extending laterally is fixedly mounted on the fixed base ii. The sliding platform ii is mounted on the fixed base ii and can move linearly laterally. The drive shaft passes longitudinally through the sliding platform ii and is rotatably connected. A gear is fixedly mounted on the drive shaft, meshing with the rack on the fixed base ii. The extended end of the drive shaft forms the power input end. The drive shaft drives the gear to rotate, causing the gear to roll along the rack, thereby driving the sliding platform ii to achieve precise lateral position adjustment. The fixed base ii of the vertical position adjustment module and the sliding platform ii of the lateral position adjustment module are connected by screws to assemble the overall device. Through their coordinated action, precise adjustment of the track in both the lateral and vertical directions is achieved.

[0033] This high-speed maglev track sliding platform position adjustment device adopts a horizontal and vertical dual-module assembly structure, utilizing mechanical transmission to achieve precise positioning. The vertical position adjustment module is located at the top of the device, driving a lead screw to rotate via a drive motor. The lead screw engages with the sliding platform i via a threaded pair, driving the sliding platform i to perform vertical linear motion, thus completing the vertical displacement compensation and precise adjustment of the track. The horizontal position adjustment module is located at the bottom of the device, driving a gear to rotate via a drive shaft. The gear meshes with a rack on the horizontal base, driving the horizontal sliding platform ii to move horizontally linearly, thus achieving the horizontal displacement compensation and precise adjustment of the track. The vertical position adjustment module 1 and the horizontal position adjustment module 2 work together to complete the precise positioning of the track in both horizontal and vertical degrees of freedom.

[0034] Based on the force characteristics and functional requirements of high-speed maglev track empty track adjustment, this device uses a rack and pinion slide for the lateral position adjustment module and a helical slide for the vertical position adjustment module, ensuring reasonable force distribution and operational reliability. During lateral adjustment, the track is only subjected to static lateral loads caused by wind force and minor foundation deformation. The rack and pinion slide provides stable meshing transmission, high torsional stiffness, and strong tangential load-bearing capacity, enabling it to withstand lateral static loads and ensuring structural stability during precise adjustment, meeting the requirements for lateral deviation adjustment. Vertical adjustment bears concentrated static loads such as the track's own weight, requiring strict positioning stability. The helical slide's screw thread pair provides direct force transmission, strong vertical load-bearing capacity, and mechanical self-locking characteristics. Once adjusted to the correct position, it can maintain its position without additional locking components, preventing slippage and rebound under static loads and ensuring high-precision vertical adjustment. Furthermore, both slide types are compact in structure and easy to assemble and disassemble, making them suitable for rapid adjustment scenarios during the empty track phase.

[0035] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0036] When technicians detect lateral or vertical positional deviations in a certain section of the high-speed maglev track, under no-load conditions, several adjustment devices are arrayed longitudinally between the track functional components and the track slab. Subsequently, precise track position adjustment is performed to meet the relevant positional accuracy requirements. The specific operation process is as follows:

[0037] First, arrange the connecting plate according to the diagram. Secure one end of the connecting plate to the track functional component with bolts. Then, place the adjustment device on the track section to be adjusted. Secure the fixed base ii and the support base in the adjustment device with bolts. At the same time, fix the sliding platform i to the other end of the connecting plate with bolts. Next, remove the bolts between the functional component connector, the adjusting shim, and the adjustment component, and remove the original adjusting shim. Then, use the adjustment device to compensate and precisely adjust the corresponding position of the track according to the measured deviation value. After the adjustment is completed, redetermine the vertical installation position of the bolts of the functional component connector, the adjusting shim, and the adjustment component based on the vertical adjustment amount of the adjustment device. Then, select a new shim with an appropriate thickness according to the horizontal adjustment amount and assemble it with bolts. Finally, disassemble the adjustment device and the connecting plate in sequence to achieve precise horizontal and vertical position adjustment of the track. This device is easy to install and disassemble, adaptable to various operating scenarios, and highly applicable.

[0038] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A high-speed maglev track gap slide table type adjustment device, characterized by, The adjustment device is disposed between the track slab and the track functional components, and is arranged at intervals along the longitudinal direction of the track. The bottom of the adjustment device is fixedly connected to the support seat protruding from the track plate. The sliding platform i of the adjustment device is fixedly connected to the track functional component through a connecting plate. The adjustment device includes a vertical position adjustment module and a horizontal position adjustment module, which are fixedly connected from top to bottom. This allows for precise position adjustment of the track in both vertical and horizontal directions, enabling the track functional component to achieve position adjustment through the adjustment device.

2. The high-speed maglev track gap sliding adjustment device according to claim 1, characterized in that, The vertical position adjustment module includes a fixed base i, a sliding platform i, an upper support, and a moving mechanism; the fixed base i and the upper support are arranged opposite each other in the vertical direction, the moving mechanism is installed between the fixed base i and the upper support, the sliding platform i is installed on the moving mechanism, and the moving mechanism can drive the sliding platform i to move up and down and is self-locking.

3. The high-speed maglev track gap sliding adjustment device according to claim 1, characterized in that, The lateral position adjustment module includes a fixed base ii, a sliding platform ii, a drive shaft, and a gear rack pair. A rack extending laterally is fixedly installed on the fixed base ii. The sliding platform ii is mounted on the fixed base ii and can move linearly laterally. The drive shaft passes longitudinally through the sliding platform ii and is rotatably connected. A gear is fixedly installed on the drive shaft. The gear meshes with the rack on the fixed base ii. The drive shaft drives the gear to rotate, causing the gear to roll along the meshing rack, thereby driving the sliding platform ii to achieve precise lateral position adjustment.

4. The high-speed maglev track gap sliding adjustment device according to claim 1, characterized in that, It also includes adjusting shims and adjusting components, which are installed between the functional component connector and the track plate, with the adjusting shims located between the adjusting components and the functional component connector. Both the adjusting shims and the adjusting components are detachably and fixedly connected to the functional component connector.

5. A high-speed maglev track gap sliding adjustment device according to claim 2, characterized in that, The moving mechanism includes a lead screw and guide columns. Two guide columns are symmetrically arranged vertically between the upper support and the fixed base i. The lower end of the guide column is fixedly connected to the fixed base i, and the upper end of the guide column is fixedly connected to the upper support. The lead screw is vertically arranged between the fixed base i and the upper support. Its lower end is rotatably connected to the fixed base i, and its upper end passes through the upper support and is connected to the drive motor through a coupling.

6. The high-speed maglev track gap sliding adjustment device according to claim 5, characterized in that, The sliding platform i is sleeved on the guide column, and the lead screw and the sliding platform i form a threaded engagement. The rotational motion of the motor is converted into the rotational motion of the lead screw, thereby driving the sliding platform i to achieve precise vertical position adjustment.

7. A high-speed maglev track gap sliding adjustment device according to claim 6, characterized in that, It also includes an intermediate base plate, which is vertically disposed between the fixed base i and the upper support, and its two ends are fixedly connected to the fixed base i and the upper support respectively.

8. A method for adjusting track gap using a high-speed maglev track gap sliding table type adjustment device according to any one of claims 1-7, characterized in that, The method includes the following steps: Install the connecting plate, fix one end of the connecting plate to the functional component connecting piece, then place the adjusting device on the track section to be adjusted, fix the adjusting device to the support base, and fix the sliding platform i of the adjusting device to the other end of the connecting plate. Remove the original adjusting shims, and then use the adjusting device to compensate and precisely adjust the corresponding position of the track according to the measured deviation value. After the adjustment is completed, redetermine the vertical installation position of the functional component connector, adjusting shims and adjusting component according to the vertical adjustment amount of the adjusting device. Then select a new shim with a suitable thickness according to the horizontal adjustment amount and complete the assembly. The adjustment device and connecting plate are disassembled in sequence to achieve precise horizontal and vertical position adjustment of the track.

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