A decoupling device for magnetic levitation vehicles

Abstract

The present application relates to a decoupling device for a magnetic levitation vehicle, comprising a mounting body and a decoupling mechanism. The mounting body is provided with a movable cavity and a connecting hole connecting the inside and outside of the movable cavity. The decoupling mechanism comprises a mounting portion, a connecting portion, an electromagnet module, and a plurality of rolling elements. The mounting portion is located within the movable cavity, the electromagnet module is located outside the movable cavity, the connecting portion is connected to the mounting portion and the electromagnet module via the connecting hole, the plurality of rolling elements are located on the upper and lower sides of the mounting portion, and the decoupling body has a three-dimensional motion space within the movable cavity. A single magnetic levitation vehicle is equipped with an even number of decoupling devices to achieve combined motion of the decoupling device in the six degrees of freedom directions, thereby improving the decoupling capability. At the same time, there is no lateral constraint between the decoupling devices on both sides. By adopting a symmetrical installation method, the decoupling devices on both sides can ensure that the lateral roll of the electromagnet module is consistent when the vehicle lands and levitates, thereby ensuring a consistent air gap. This facilitates magnetic levitation control, improves anti-roll performance, and reduces the accuracy requirements for the track.

Description

Technical Field

[0001] The present application relates to a magnetic levitation vehicle decoupling device. Background Art

[0002] During the operation of the maglev vehicle, the electromagnets installed on the maglev vehicle move along the track. To adapt to track changes, the electromagnets need to be able to perform pitch and parallelogram motion to achieve decoupling of the maglev vehicle.

[0003] Currently, most maglev vehicles utilize a boom-type decoupling device, an asymmetric structure that requires parallelogram motion to achieve decoupling. When a maglev vehicle lands (stops and is not suspended), it rolls sideways, resulting in different air gaps between the electromagnets on either side of the vehicle and their corresponding tracks. This air gap difference affects vehicle levitation and exacerbates the difficulty of maglev control. This requires increasing the magnetic attraction of the electromagnets or increasing the sensor range. When the air gap is larger than the gap sensor, the air gap value cannot be fed back.

[0004] However, the anti-roll performance and decoupling performance of the boom-type decoupling device restrict each other. To improve the decoupling performance of the device, it is necessary to increase the vertical distance between the upper and lower anti-roll beams of the anti-roll decoupling mechanism of the running unit, while to improve the anti-roll performance, it is necessary to reduce the change in the vertical distance between the upper and lower anti-roll beams.

[0005] When a boom-type decoupling device is used in a maglev vehicle, the two longitudinal beams of the suspension frame are in an indeterminate state, requiring decoupling. The vehicle body must be connected to the two longitudinal beams of the suspension frame via four or more flexible units with planar sliding capabilities to ensure the decoupling function of the suspension frame is effective. Otherwise, the decoupling range of the suspension frame will be limited, or even the decoupling will fail. Specifically, the use of a boom-type decoupling device requires simultaneous decoupling between the vehicle body and the electromagnet at two locations: between the vehicle body and the longitudinal beams of the suspension frame, and between the longitudinal beams. Only when the degrees of freedom at both locations meet their respective decoupling requirements can the vehicle operate normally. The repeated decoupling release mechanism significantly increases design difficulty, increases the complexity of the mechanism, and reduces the stability and reliability of the vehicle.

[0006] In addition, the flexible unit must be coordinated with a planar moving slide to meet the decoupling requirements, which physically directly leads to the upward shift of the vehicle body's center of gravity, which is not conducive to vehicle safety and experience comfort.

[0007] In order to solve the above problems, a magnetic levitation vehicle decoupling device is proposed. Summary of the Invention

[0008] In order to simultaneously improve the anti-roll and decoupling performance of the device, the present application provides a magnetic levitation vehicle decoupling device.

[0009] The present application provides a magnetic levitation vehicle decoupling device that adopts the following technical solution:

[0010] A maglev vehicle decoupling device includes a mounting body and a decoupling mechanism, wherein the mounting body is used to connect to the suspension frame of the maglev vehicle, the mounting body is provided with a movable cavity and a connecting hole connecting the inside and outside of the movable cavity; the decoupling mechanism includes a mounting part, a connecting part, an electromagnet module and a rolling body, the mounting part is located in the movable cavity, the electromagnet module is located outside the movable cavity, the connecting part is connected to the mounting part and the electromagnet module through the connecting hole, a plurality of rolling bodies are provided and are located on the upper and lower sides of the mounting part, the rolling bodies are rollingly and / or rotationally connected to the mounting part and the inner wall of the movable cavity, and the decoupling body has a three-dimensional motion space in the movable cavity.

[0011] By adopting this technical solution, a single maglev vehicle can be equipped with an even number of decoupling devices. The rolling elements and the space reserved between the decoupling elements and the inner wall of the moving cavity enable combined motion of the decoupling devices in all six directions, improving decoupling capability. Furthermore, the decoupling devices on either side are not laterally constrained from each other; each decoupling device's lateral degree of freedom depends on the movement of the decoupling elements within a single device. By symmetrically installing the decoupling devices on both sides, the electromagnet modules maintain consistent roll, thus maintaining a consistent air gap, when the vehicle is landing or launching. This facilitates maglev control, improves anti-roll performance, and reduces track precision requirements.

[0012] Preferably, both upper and lower sides of the mounting portion are provided with sliding grooves for embedding the rolling body, the sliding grooves are arc grooves, and the radius of the sliding grooves is greater than the radius of the rolling body.

[0013] By adopting the above technical solution, the position of the rolling element on the mounting portion is restricted, ensuring that the mounting portion can move smoothly via the rolling element, thereby improving the reliability of the device. At the same time, the arc groove can better fit the surface of the rolling element, allowing the rolling element to roll smoothly and improving the decoupling performance of the decoupling device.

[0014] Preferably, the slide groove extends circumferentially about the axis of the connecting hole.

[0015] By adopting the above technical solution, the moving space of the rolling body in the slide groove is increased, the decoupling body is facilitated to move smoothly in the moving cavity, and the decoupling performance is improved.

[0016] Preferably, the slide groove is arranged away from the axis of the connecting hole.

[0017] By adopting the above technical solution, the moment generated when the decoupling body tilts is increased, so that the decoupling body is not easy to tilt, and the anti-roll performance of the vehicle when landing is improved.

[0018] Preferably, when the decoupling body moves, the sliding groove below the mounting portion always faces the inner wall of the moving cavity.

[0019] By adopting the above technical solution, when the decoupling body moves in the moving cavity, the rolling body is prevented from sliding out of the communicating hole, thereby improving the reliability of the device and reducing failures.

[0020] Preferably, when the decoupling body moves upward to contact the inner wall above the moving cavity, the distance between the lower surface of the mounting portion and the inner wall below the moving cavity is smaller than the diameter of the rolling body.

[0021] By adopting the above technical solution, when the decoupling body moves upward in the moving cavity until the rolling body located above the mounting portion contacts the inner wall of the moving cavity, the rolling body located below the mounting portion is prevented from escaping from the slide groove, thereby improving the reliability of the device and avoiding device failure due to incorrect rolling body position.

[0022] Preferably, the mounting portion includes a plurality of connecting rods and an upper cover plate and a lower cover plate arranged at intervals, the two ends of the connecting rods are screwed to the upper cover plate and the lower cover plate respectively, and the upper cover plate and the lower cover plate are both provided with threaded holes corresponding to the connecting rods.

[0023] By adopting this technical solution, the distance between the upper and lower covers is adjusted using connecting rods, thereby enabling the decoupling body to achieve different amounts of movement within the moving cavity. This facilitates adjusting the decoupling performance of the device to achieve more appropriate decoupling capabilities for the maglev vehicle. Furthermore, the positional relationship between the upper and lower covers is locked using threads on the multiple connecting rods.

[0024] Preferably, the upper and lower inner walls of the movable cavity are provided with wear-resistant surfaces, and the wear-resistant surfaces are rollingly and / or rotationally connected to the rolling body.

[0025] By adopting the above technical solution, the friction coefficient between the rolling body and the inner wall of the moving cavity is reduced by the wear-resistant surface, which facilitates the relative movement of the decoupling body relative to the mounting portion, that is, relative to the suspension frame, and improves the decoupling performance of the device.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. For a single maglev vehicle, an even number of decoupling devices are installed. The rolling elements and the space reserved between the decoupling elements and the inner wall of the moving cavity enable combined motion in all six degrees of freedom, improving decoupling capability. Furthermore, the decoupling devices on either side are not laterally constrained from each other. Each decoupling device's lateral degrees of freedom are determined by the movement of the decoupling elements within a single device. By symmetrically installing the decoupling devices on both sides, the electromagnet modules maintain consistent roll, thus maintaining a consistent air gap, when the vehicle lands or launches. This facilitates maglev control, improves anti-roll performance, and reduces track precision requirements.

[0028] 2. Connecting rods are used to adjust the distance between the upper and lower covers, allowing the decoupling body to achieve different amounts of movement within the moving cavity. This facilitates adjustment of the device's decoupling performance to achieve more appropriate decoupling capabilities for the maglev vehicle. Multiple connecting rods are also used to lock the positional relationship between the upper and lower covers.

[0029] 3. By adopting the setting mode of the slide groove being away from the axis of the connecting hole, the moment generated when the decoupling body tilts is increased, making the decoupling body less likely to tilt, and improving the anti-roll performance of the vehicle when landing.

[0030] 4. The device can simultaneously meet the decoupling requirements between the vehicle body and the suspension frame longitudinal beams, as well as between the longitudinal beams. There is no need to add flexible units with plane sliding functions. It can move the center of gravity of the vehicle body downward, increase vehicle safety and experience comfort, reduce costs and structural complexity, and improve the stability and reliability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a cross-sectional view of an embodiment of the present application

[0032] Explanation of the reference numerals: 0. Suspension frame; 1. Mounting body; 11. Connecting rod; 12. Upper cover plate; 13. Lower cover plate; 14. Moving cavity; 15. Connecting hole; 16. Wear-resistant surface; 2. Decoupling body; 21. Mounting part; 211. Slide groove; 22. Connecting part; 23. Electromagnet module; 24. Rolling body; 3. Threaded hole. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 This application is described in further detail.

[0034] Reference Figure 1 The embodiment of the present application discloses a magnetic levitation vehicle decoupling device including a mounting body 1 and a decoupling body 2.

[0035] The mounting body 1 includes a plurality of connecting rods 11 and an upper cover plate 12 and a lower cover plate 13 spaced apart in the vertical direction. The upper cover plate 12 is used to connect to the suspension frame 0 of the maglev vehicle. The two ends of the connecting rod 11 are screwed to the upper cover plate 12 and the lower cover plate 13 respectively, and the upper cover plate 12 and the lower cover plate 13 are both provided with threaded holes 3 corresponding to the connecting rods 11. The upper cover plate 12, the lower cover plate 13 and the connecting rod 11 together form a movable cavity 14. The mounting body 1 is provided with a connecting hole 15 connecting the inside and outside of the movable cavity 14, and the connecting hole 15 passes through the upper cover plate 12 and the lower cover plate 13. The connecting rod 11 is parallel to the axis of the connecting hole 15 and is circumferentially and equidistantly spaced about the axis of the connecting hole 15.

[0036] The decoupling element 2 comprises a mounting portion 21, a connecting portion 22, an electromagnet module 23, and a rolling element 24. The mounting portion 21 is located within the movable chamber 14, while the electromagnet module 23 is located outside the movable chamber 14. The ends of the connecting portion 22 are fixedly connected to the mounting portion 21 and the electromagnet module 23 via connecting holes 15. The decoupling element 2 can move in three dimensions within the movable chamber 14, i.e., in six directions and any combination of these directions.

[0037] Along the axial direction of the connecting hole 15, a slide groove 211 is provided at both ends of the mounting portion 21. The slide groove 211 circumferentially passes through the mounting portion 21 about the axis of the connecting hole 15. The slide groove 211 is arranged away from the axis of the connecting hole 15, and when the decoupling body 2 moves, the slide groove 211 always faces the inner wall of the moving cavity 14.

[0038] The rolling element 24 is positioned within the chute 211. The chute 211 is a circular arc, with a radius greater than that of the rolling element 24. In another embodiment, the cross-sectional shape of the chute 211 can be a polygon, such as a triangle or rectangle. When the decoupling element 2 moves upward until it contacts the upper inner wall of the movable chamber 14, the distance between the lower surface of the mounting portion 21 and the lower inner wall of the movable chamber 14 is less than the diameter of the rolling element 24.

[0039] The surfaces of the upper cover plate 12 and the lower cover plate 13 facing the movable cavity 14 are both subjected to wear-resistant treatment to form wear-resistant surfaces 16, and the wear-resistant surfaces 16 are rollingly and / or rotationally connected to the rolling elements 24. In another embodiment, the upper cover plate 12 and the lower cover plate 13 are both made of wear-resistant materials, and the surfaces of the upper cover plate 12 and the lower cover plate 13 facing the movable cavity 14 are the wear-resistant surfaces 16.

[0040] The implementation principle of a magnetic levitation vehicle decoupling device according to an embodiment of the present application is as follows:

[0041] For a single maglev vehicle, an even number of decoupling devices are installed, and the decoupling devices on both sides are symmetrically mounted. The rolling element 24 and the space reserved between the decoupling element 2 and the inner wall of the movable cavity 14 enable the decoupling devices to move in six directions, as well as in any direction, improving their decoupling capabilities. Furthermore, the decoupling devices on both sides are not subject to lateral constraints. The lateral freedom of each decoupling device is determined by the movement of the decoupling element 2 within a single device. This ensures consistent lateral roll of the electromagnet module 23 during vehicle landing and launch, resulting in a consistent air gap. This facilitates magnetic levitation control, improves anti-roll performance, and reduces track precision requirements.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A magnetic levitation vehicle decoupling device, characterized in that: The invention comprises a mounting body (1) and a decoupling body (2), wherein the mounting body (1) is used to connect with a suspension frame (0) of a magnetic levitation vehicle, wherein a moving cavity (14) is provided in the mounting body (1) and a connecting hole (15) is provided for connecting the inside and outside of the moving cavity (14); the decoupling body (2) comprises a mounting portion (21), a connecting portion (22), an electromagnet module (23) and a rolling body (24), wherein the mounting portion (21) is located in the moving cavity (14), the electromagnet module (23) is located outside the moving cavity (14), the connecting portion (22) is connected to the mounting portion (21) and the electromagnet module (23) through the connecting hole (15), a plurality of rolling bodies (24) are provided and are located at the upper and lower sides of the mounting portion (21), the rolling bodies (24) are connected to the mounting portion (21) and the inner wall of the moving cavity (14) in a rolling and / or rotational manner, and the decoupling body (2) has a three-dimensional motion space in the moving cavity (14); The mounting portion (21) is provided with a sliding groove (211) on both the upper and lower sides for the rolling body (24) to be embedded, the sliding groove (211) is a circular arc groove, and the radius of the sliding groove (211) is greater than the radius of the rolling body (24); The sliding groove (211) extends circumferentially about the axis of the communicating hole (15); When the decoupling body (2) moves upward to contact the inner wall above the moving cavity (14), the distance between the lower surface of the mounting portion (21) and the inner wall below the moving cavity (14) is smaller than the diameter of the rolling body (24); The mounting portion (21) includes a plurality of connecting rods (11) and an upper cover plate (12) and a lower cover plate (13) arranged at intervals. The two ends of the connecting rods (11) are screwed to the upper cover plate (12) and the lower cover plate (13) respectively. The upper cover plate (12) and the lower cover plate (13) are both provided with threaded holes (3) corresponding to the connecting rods (11).

2. The magnetic levitation vehicle decoupling device according to claim 1, characterized in that: The sliding groove (211) is arranged away from the axis of the communicating hole (15).

3. The magnetic levitation vehicle decoupling device according to claim 1, characterized in that: When the decoupling body (2) moves, the sliding groove (211) located below the mounting portion (21) always faces the inner wall of the moving cavity (14).

4. The magnetic levitation vehicle decoupling device according to claim 1, characterized in that: The upper and lower inner walls of the movable cavity (14) are provided with wear-resistant surfaces (16), and the wear-resistant surfaces (16) are connected to the rolling body (24) in a rolling and / or rotational manner.

Images