Spiral chute design method and rail accurate compensation spiral chute system

Abstract

This invention proposes a spiral chute design method and a spiral chute system for precise track compensation. The method involves: first, moving a mass point projected onto a turntable by a rotating bearing along the chute; then obtaining the trajectory equation of the rotating bearing center within the chute; next, obtaining the optimal trajectory equation of the contact point with the bearing boundary; then translating the trajectory equation of the rotating bearing center with the optimal trajectory equation of the contact point with the bearing boundary to obtain the design curve equation of the chute; finally, designing the spiral chute based on the design curve equation. This solves the problem of needing to implement relevant measures to achieve real-time adjustment of track structure deformation when tunnels cross active faults, aiming for real-time and precise adjustment. A spiral chute design method and adjustment system for precise track compensation are also provided.

Description

Technical Field

[0001] This invention belongs to the field of rail transit technology, and specifically relates to a spiral chute design method and a spiral chute system for precise track compensation. Background Technology

[0002] To adapt to my country's rapid economic development, a large number of transportation infrastructure projects, such as highways and railways, need to be constructed, inevitably traversing high mountains and deep valleys, usually through tunnels. my country is located between the Circum-Pacific Seismic Belt and the Eurasian Seismic Belt, with highly active fault zones, making it a country prone to earthquakes. Tunneling through active faults is unavoidable. For high-speed railway tunnels, fault displacement has a significant impact on the tunnel and its internal facilities. Because high-speed rail has extremely high requirements for track deformation standards, relevant measures are needed when tunnels cross active faults to achieve real-time and precise adjustments to the track structure deformation.

[0003] In other words, because high-speed rail has very high requirements for track deformation, when tunnels pass through active faults, relevant measures need to be taken to adjust the deformation of the track structure in real time. To achieve the goal of real-time and precise adjustment, accurate theoretical calculations and mechanical design of the adjustment device are required.

[0004] It is evident that how to provide a precise design method for spiral grooves is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The present invention provides a mechanical adaptive control system for track under fault displacement, which at least solves the above-mentioned technical problems;

[0006] To address the aforementioned problems, a first aspect of the present invention provides a design method for a spiral groove, the spiral groove comprising a groove, the design method comprising: displacing a mass point; obtaining the rotation center equation of the groove; obtaining the optimal trajectory equation of the contact point with the bearing boundary; translating the rotation center equation and the optimal trajectory equation of the contact point with the bearing boundary to obtain the design curve equation of the spiral groove; and designing the spiral groove based on the design curve equation.

[0007] In the first aspect, causing the mass point to displace also includes: applying an external force to cause the chute to displace a predetermined distance.

[0008] In the first aspect, applying an external force to cause the slide to undergo a predetermined displacement includes applying an external force to cause the slide to undergo a predetermined translation and rotation.

[0009] In the first aspect, the equation for the rotation center of the groove is obtained as follows:

[0010]

[0011] α=2πr′ / (Rs) (2)

[0012] Where l represents the initial lever arm; x represents the x-axis coordinate of a point on the slide; y represents the y-axis coordinate of a point on the slide; α represents the transmission coefficient; R represents the radius of the large bevel gear; r' represents the radius of the small bevel gear; and s represents the stroke of the lead screw.

[0013] In the first aspect, the optimal trajectory equation for the contact point with the bearing boundary is obtained as follows:

[0014]

[0015] Where l represents the initial lever arm; x represents the x-axis coordinate of a point on the slide; y represents the y-axis coordinate of a point on the slide; α represents the transmission coefficient; and r represents the radius of the rotating bearing.

[0016] In the first aspect, the trajectory equation of the center of the rotating bearing and the optimal trajectory equation of the contact point at the bearing boundary are translated (taking a translation of m as an example) to obtain the design curve equation of the helical groove, including:

[0017]

[0018]

[0019] Where l represents the initial lever arm; x represents the x-axis coordinate of a point on the slide; y represents the y-axis coordinate of a point on the slide; α represents the transmission coefficient; r represents the radius of the rotating bearing; and m represents the distance the rotating bearing moves.

[0020] In the first aspect, displacing a particle includes: sliding the gear along the inner boundary of the groove, wherein the gear is tangent to the groove.

[0021] In the first aspect, before displacing the particle, the method further includes: orienting the opening of the chute upward or downward.

[0022] Secondly, the present invention provides a spiral chute system for precise compensation of track under fault displacement in tunnels crossing active faults, wherein the chute system is applied to the spiral chute design method described in any one of the above.

[0023] Beneficial Effects: This invention proposes a design method for spiral chute. The method involves: first, allowing a particle to slide along the chute; then obtaining the equation of the chute's rotation center; next, obtaining the optimal trajectory equation of the contact point with the bearing boundary; translating the rotation center equation and the optimal trajectory equation of the contact point with the bearing boundary to obtain the design curve equation of the chute; and finally, designing the spiral chute based on the design curve equation. This solves the problem of needing to employ relevant measures to achieve real-time adjustment of track structure deformation when tunnels cross active faults, aiming for precise real-time regulation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 Flowchart of the spiral groove design method provided in Embodiment 1 of the present invention Figure 1 ;

[0026] Figure 2 Flowchart of the spiral groove design method provided in Embodiment 1 of the present invention Figure 2 ;

[0027] Figure 3 This is a simplified model of the spiral groove design in Embodiment 1 of the present invention. Figure 1 ;

[0028] Figure 4 This is a simplified model of the spiral groove design in Embodiment 1 of the present invention. Figure 2 ;

[0029] Figure 5 The spiral groove provided in Embodiment 1 of the present invention;

[0030] Figure 6 The spiral groove II provided in Embodiment 1 of the present invention;

[0031] Figure 7 This is a schematic diagram of the movement of a particle in a chute in Embodiment 1 of the present invention. Figure 1 ;

[0032] Figure 8 This is a schematic diagram of the movement of a particle in a chute in Embodiment 1 of the present invention. Figure 2 . Detailed Implementation

[0033] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0034] Furthermore, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in the embodiments of this specification are for illustrative purposes only and are not intended to limit the invention.

[0035] Example 1:

[0036] like Figure 1 As shown, this embodiment provides a spiral groove design method. The design method includes: making a mass slide along the groove; obtaining the rotation center equation of the groove; obtaining the optimal trajectory equation of the contact point with the bearing boundary; translating the rotation center equation and the optimal trajectory equation of the contact point with the bearing boundary to obtain the design curve equation of the groove; and designing the spiral groove based on the design curve equation.

[0037] Specifically, the spiral chute design method provided in this embodiment addresses the issue of tunnel deformation and lining displacement caused by fault displacement. This displacement leads to the movement of the turntable. Due to the constraint of the transverse connecting rod (fixed to the track slab of the previous lining section, using the previous lining section as the reference lining, i.e., the target object for retraction), the turntable rotates along the chute, driving the transmission gear to rotate. Through the connecting transmission of the bevel gear, the push rod rotates, thereby causing the track slab to retract via the transmission nut. Ultimately, the track slab returns to its initial position, and the relative position of the track remains unchanged, achieving the goal of safe operation of the high-speed rail. The spiral chute is formed by the preparation of the chute.

[0038] It should be noted that the chute is configured as follows: a turntable is installed between each lining section and the track plate, the turntable is rotatably connected to the lining, and an arc-shaped chute is provided on the turntable around its center; a horizontal connecting rod, one end of which is connected to an adjacent lining, and the other end of which is connected to the chute of the turntable via a bearing; a push rod, both ends of which are respectively installed on the lining, and the ends of the push rod connected to the lining can rotate freely, the push rod consists of a first segment and a second segment, the end of the first segment away from the lining is a threaded end, and the end of the second segment away from the lining is provided with a transmission nut adapted to the threaded end; both ends of the push rod are provided on the lining via pins; a gear transmission structure is connected between the push rod and the turntable, the connection position of the gear transmission structure and the turntable is located on the outer contour of the turntable, and the gear transmission structure is fixedly connected to the push rod.

[0039] The key scientific problem in the entire adjustment process is the design of the chute curve. Since the adjustment process includes both translation and rotation, the motion trajectory of the mass point projected onto the turntable by the top axis of the horizontal connecting rod is complex, i.e., the curve equation of the chute. The design process is divided into two parts: the trajectory equation of the rotation center and the optimal trajectory equation of the bearing boundary contact point (where the rotational arm is the longest).

[0040] In some possible implementations, making the particle slide along the groove also includes applying an external force to cause the groove to undergo a predetermined displacement.

[0041] In some possible implementations, applying an external force to cause the slide to undergo a predetermined displacement includes applying an external force to cause the slide to undergo a predetermined translation and rotation.

[0042] In the first aspect, the equation for the rotation center of the groove is obtained as follows:

[0043]

[0044] α=2πr′ / (Rs) (2)

[0045] Where l represents the initial lever arm; x represents the x-axis coordinate of a point on the slide; y represents the y-axis coordinate of a point on the slide; α represents the transmission coefficient; R represents the radius of the large bevel gear; r' represents the radius of the small bevel gear; and s represents the stroke of the lead screw.

[0046] In the first aspect, the optimal trajectory equation for the contact point with the bearing boundary is obtained as follows:

[0047]

[0048] Where l represents the initial lever arm; x represents the x-axis coordinate of a point on the slide; y represents the y-axis coordinate of a point on the slide; α represents the transmission coefficient; and r represents the radius of the rotating bearing.

[0049] In the first aspect, the trajectory equation of the center of the rotating bearing and the optimal trajectory equation of the contact point at the bearing boundary are translated (taking a translation of m as an example) to obtain the design curve equation of the helical groove, including:

[0050]

[0051]

[0052] Where l represents the initial lever arm; x represents the x-axis coordinate of a point on the slide; y represents the y-axis coordinate of a point on the slide; α represents the transmission coefficient; r represents the radius of the rotating bearing; and m represents the distance the rotating bearing moves.

[0053] In some possible implementations, sliding a particle along a groove includes sliding the gear along the inner boundary of the groove, with the gear being tangent to the groove.

[0054] In some possible implementations, the method further includes, before the particle slides along the groove:

[0055] The opening of the groove is oriented upwards or downwards.

[0056] Example 2

[0057] This invention provides a spiral chute system for precise compensation of track deformation under tunnel slippage across active faults. The chute system is applied to any of the spiral chute design methods described above. This design method includes: first, allowing a mass to slide along the chute; then, obtaining the equation of the chute's rotation center; next, obtaining the optimal trajectory equation of the contact point with the bearing boundary; translating the rotation center equation and the optimal trajectory equation of the contact point with the bearing boundary to obtain the design curve equation of the chute; and finally, designing the spiral chute based on the design curve equation. This solves the problem of needing to employ relevant measures to achieve real-time adjustment of track structure deformation when tunnels cross active faults, aiming for precise real-time regulation.

[0058] Since Embodiment 2 and Embodiment 1 are embodiments under the same inventive concept and have some identical structures, the structures in Embodiment 2 that are substantially the same as those in Embodiment 1 will not be described in detail. For the parts not described in detail, please refer to Embodiment 1.

[0059] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. All should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0060] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for designing a spiral groove, characterized in that, The design method includes: This causes the particle to shift. Obtain the equation of the rotation center of the chute; Obtain the optimal trajectory equation for the bearing boundary contact point; The optimal trajectory equation of the contact point between the rotation center equation and the bearing boundary is translated to obtain the design curve equation of the spiral groove; The spiral groove was designed based on the design curve equation. The displacement of the mass point also includes: applying an external force to cause the slide to undergo a preset displacement; Applying an external force to cause the slide to undergo a predetermined displacement includes: applying an external force to cause the slide to undergo a predetermined translation and rotation; The equation for the center of rotation is obtained as follows: （1） （2） in, l Indicates the initial lever arm; x Indicates the point on the slide. x Axis coordinate values; y Indicates the point on the slide. y Axis coordinate values; α Indicates the transmission coefficient; R Indicates the radius of the large bevel gear; r’ Indicates the radius of the small bevel gear; s Indicates the travel of the leadscrew; The optimal trajectory equation for the contact point with the bearing boundary is: （3） in, l Indicates the initial lever arm; x Indicates the point on the slide. x Axis coordinate values; y Indicates the point on the slide. y Axis coordinate values; α Indicates the transmission coefficient; r Indicates the radius of the rotating bearing; The optimal trajectory equation of the rotation center equation and the bearing boundary contact point is translated, and then shifted downwards. m When obtaining the design curve equation for the spiral groove, the following steps are taken: （4） （5） in, l Indicates the initial lever arm; x Indicates the point on the slide. x Axis coordinate values; y Indicates the point on the slide. y The axis coordinates; α represents the transmission coefficient; r represents the radius of the rotating bearing; m represents the distance the rotating bearing moves.

2. The spiral groove design method according to claim 1, characterized in that, Displacement of a particle includes: The gear slides along the inner boundary of the groove, and the gear is tangent to the groove.

3. The spiral groove design method according to claim 1, characterized in that, Before the displacement of the particle, the method further includes: The opening of the groove is oriented upwards or downwards.

4. A spiral chute system for precise track compensation under fault-crossing tunnel slippage, characterized in that: The chute system is applied to the spiral chute design method described in any one of claims 1-3.

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