A magnetic levitation train's force guiding mechanism

Abstract

The application discloses a magnetic levitation train forced guiding mechanism, comprising a cross pull rod and a T-arm assembly, characterized in that a cross rotary sliding table is connected to the cross pull rod, the cross rotary sliding table comprises a lower sliding table, the lower surface of the lower sliding table is connected with an air spring on a suspension frame, the upper surface of the lower sliding table is provided with a cross guide rail assembly, and the upper end of the cross guide rail assembly is connected with a vehicle body. The forced guiding mechanism of the magnetic levitation train realizes compensation of displacement of the suspension module and the vehicle body in each direction, prolongs the service life of the air spring, and improves the curve passing performance of the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of maglev vehicle, in particular to a forced guiding mechanism of a maglev train. BACKGROUND

[0002] The maglev train is a modern high-tech rail transport tool, which realizes the non-contact suspension and guiding between the train and the track through electromagnetic force, and uses the electromagnetic force generated by the linear motor to pull the train to run. The maglev train has the advantages of smooth and comfortable running, easy control, low noise, strong environmental adaptability, easy maintenance, etc., and is attracting more and more attention.

[0003] At present, the guiding mechanism of the medium and low speed maglev train is as shown in Figure 1 , which mainly includes one set of long T-shaped arm 03, one set of short T-shaped arm 07, two sets of longitudinal pull rods 06 (steel pipes or steel wire ropes) and four sets of transverse pull rods 02. The longitudinal pull rod 06 is connected with the rotating arm 04 through the hinge point, and the rotating arm 04 can rotate around the mounting seat 05 fixed on the vehicle body, so as to form a movable parallelogram frame with the mounting seat 05 center as the fixed point. The transverse pull rod 02 is connected with the linear slide table 01 device of the suspension frame unit. When the train passes through the curve, the linear slide table 01 slides relative to the vehicle body, drives the pull rod and the parallelogram structure to move, so as to realize the passing of the suspension frame unit and the vehicle through the curve and improve the curve passing performance of the vehicle.

[0004] When the maglev train passes through the flat curve track, the slider and the linear slide table will have relative displacement, that is, the turning mechanism makes the moving point P1 move in a straight line along the x direction, and the real track of the point P1 is the circular arc motion around the relatively static point O1, which is shown by the dotted line in Figure 2 . Figure 2 In the figure, it is assumed that the point P1 produces displacement Δx along the x direction, and when the linear guide type turning mechanism is adopted, the point P1 reaches the point P11; while the real motion of P1 is the circular arc motion with O1 as the center, so it reaches the point P12. P11 and P12 produce displacement difference Δy and rotation angle α in the y direction, which need to be compensated by other ways, so that the train can smoothly pass through the curve track. At present, the circular arc guide way is generally used to compensate the displacement difference Δy, but it cannot compensate the rotation angle α, and when the length of the suspension frame changes, the radius of the circular arc guide way also needs to be changed. At the same time, the long and short T-shaped arms of the forced guiding mechanism of the medium and low speed maglev vehicle need to maintain a certain fixed ratio to ensure the relative position of the suspension frame module and the vehicle. When the vehicle is subjected to lateral force, the long and short T-shaped arms will be deformed under stress, and the ratio of the long and short T-shaped arms will change after deformation. SUMMARY

[0005] Therefore, the magnetic levitation train forced guiding mechanism is provided, which realizes compensation for displacement of the suspension module and the vehicle body in all directions, improves curve passing performance of the vehicle, and prolongs service life of the air spring.

[0006] To achieve the above object, the present application provides the following technical scheme.

[0007] The magnetic levitation train forced guiding mechanism comprises a cross pull rod and a T-arm assembly, the cross pull rod is connected with a cross rotary slide platform, the cross rotary slide platform comprises a lower slide platform, a lower surface of the lower slide platform is connected with an air spring on a suspension frame, an upper surface of the lower slide platform is provided with a cross guide rail assembly, and an upper end of the cross guide rail assembly is connected with a vehicle body.

[0008] Optionally, the cross guide rail assembly comprises upper guide rails and lower guide rails which are cross arranged, the lower guide rails are connected with the lower slide platform through bolts, and the upper guide rails are connected with the vehicle body through bolts.

[0009] Optionally, the lower surface of the lower slide platform is connected with the air spring through a rotary bearing, one end of the rotary bearing is connected with the air spring through a bolt, and the other end is connected with the lower slide platform through a bolt.

[0010] Optionally, the cross guide rail assembly comprises a transverse guide rail and a longitudinal guide rail, and the transverse guide rail and the longitudinal guide rail are arranged vertically.

[0011] Optionally, the upper guide rails and the lower guide rails are roller guide rails or slide platform guide rails.

[0012] Optionally, the cross guide rail assembly comprises a transverse guide rail and a longitudinal guide rail, and the transverse guide rail and the longitudinal guide rail are arranged vertically.

[0013] Optionally, the T-arm assembly comprises a T-arm rod, a center shaft, a rotating arm and a connecting rod, one end of the T-arm rod is fixedly connected with one end of the center shaft, the other end of the center shaft is fixedly connected with a center position of the rotating arm, and one end of the connecting rod is rotatably connected to an end of the rotating arm.

[0014] Optionally, the connecting rod is provided with two, and the two connecting rods are symmetrically arranged at two ends of the rotating arm.

[0015] Optionally, the T-arm rod for connecting the end of the connecting rod is provided with a rotating shaft seat, and the ends of the two connecting rods are rotatably connected to the rotating shaft seat through respective rotating shafts.

[0016] Optionally, the T-arm rod and the center shaft are connected in a bolt or key connection mode, and the center shaft and the rotating arm are connected in a bolt or key connection mode.

[0017] As can be seen from the above technical solution, the magnetic levitation train guiding mechanism provided by the present invention replaces the linear slide in the prior art with a cross-shaped rotary slide. The cross-shaped rotary slide includes a lower slide, and the upper surface of the lower slide is provided with a cross guide rail assembly. Thus, when the vehicle turns, the displacement and rotation angle of the suspension module and the vehicle body in all directions can be compensated, thereby reducing the force on each component when the train passes through the curve, reducing or avoiding the torsional angle of the air spring, thereby reducing the friction between the air spring and the side of the suspension frame support arm, extending the service life of the air spring, and improving the vehicle's curve-passing ability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0019] Figure 1 This is a schematic diagram of the guiding mechanism of a maglev train in the prior art;

[0020] Figure 2 This is a schematic diagram of the state of a linear guide steering mechanism in the prior art when it passes through a curved guide rail;

[0021] Figure 3 This is a schematic diagram of the forced guidance mechanism of a magnetic levitation train according to an embodiment of the present invention;

[0022] Figure 4 for Figure 3 A schematic diagram of the connection structure between the air spring and the slewing bearing in the diagram.

[0023] Figure 5 A schematic diagram of the forced guidance mechanism of a magnetic levitation train provided in another embodiment of the present invention;

[0024] Figure 6 for Figure 5 A schematic diagram of the structure after removing the sliding platform;

[0025] Figure 7 This is a schematic diagram of the T-arm assembly provided in an embodiment of the present invention. Detailed Implementation

[0026] This invention discloses a forced guidance mechanism for a magnetic levitation train, which realizes compensation for the displacement of the levitation module and the vehicle body in all directions, extends the service life of the air spring, and improves the vehicle's curve passability.

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0028] Please refer to Figures 3 to 7 The present application provides a forced guiding mechanism of a magnetic levitation train, comprising a cross pull rod and a T-arm assembly, a cross rotary slide table is connected to the cross pull rod, the cross rotary slide table comprises a lower slide table 1, the lower surface of the lower slide table 1 is connected to an air spring 3 on a levitation frame, the upper surface of the lower slide table 1 is provided with a cross guide rail assembly, and the upper end of the cross guide rail assembly is connected to a vehicle body.

[0029] One end of the rotary bearing 2 is fixedly connected to the lower surface of the lower slide table 1, and the other end is fixedly connected to the upper end of the air spring 3, and the air spring 3 is connected to the levitation frame.

[0030] The forced guiding mechanism of the magnetic levitation train of the present application replaces the linear slide table in the prior art with a cross rotary slide table, the cross rotary slide table comprises a lower slide table 1, the upper surface of the lower slide table 1 is provided with a cross guide rail assembly, so that when the vehicle turns, the displacement of the levitation module and the vehicle body in each direction and the rotation angle can be compensated, the stress of each component of the train when passing through a curve is reduced, the torsion angle of the air spring is reduced or avoided, the friction between the air spring and the side of the levitation frame support arm is reduced, the service life of the air spring is prolonged, and the curve passing capacity of the vehicle is improved.

[0031] Specifically, the cross guide rail assembly comprises upper guide rails and lower guide rails arranged in cross, the lower guide rails are connected to the lower slide table 1 through bolts, and the upper guide rails are connected to the vehicle body through bolts. The upper guide rails and the lower guide rails are arranged in cross, and the included angle between the two is an acute angle or a right angle, so as to compensate the displacement of the levitation module and the vehicle body in each direction, and the rotation angle can also be compensated.

[0032] In a specific embodiment, the cross guide rail assembly comprises a transverse guide rail 5 and a longitudinal guide rail 4, and the transverse guide rail 5 and the longitudinal guide rail 4 are arranged vertically. The transverse guide rail 5 and the longitudinal guide rail 4 are arranged vertically to form a cross rotary slide table structure, which facilitates the displacement of the levitation module and the vehicle body in different directions when the train turns. One of the transverse guide rail 5 and the longitudinal guide rail 4 is connected to the vehicle body, and the other is connected to the lower slide table 1. It can be understood that the above guide rails all comprise guide rails and sliding blocks, and the sliding blocks are connected to the guide rails. Among them, the guide rail arranged at the upper end is fixedly connected to the sliding block of the guide rail arranged at the lower end. Specifically, as shown in Figure 3 and Figure 4As shown in the figure, the transverse guide rail 5 is connected with the vehicle body, and the longitudinal guide rail 4 is connected with the lower sliding platform 1. In this embodiment, the lateral pull rod connecting lug 101 is arranged on the side surface of the lower sliding platform 1. Figure 3 As shown in the figure, the lateral pull rod connecting lug 101 is used for connecting the lateral pull rod. The lateral pull rod is connected with the lateral pull rod connecting lug 101 through a bolt or a pin.

[0033] In another specific embodiment, the lower surface of the lower sliding platform 1 is rotationally connected with the air spring 3 through the rotary bearing 2. One end of the rotary bearing 2 is connected with the upper end of the air spring 3 through a bolt, and the other end is connected with the lower sliding platform 1 through a bolt. The connection mode of the rotary bearing 2 with other components is a mode commonly used by those skilled in the art, which will not be described here. The rotary bearing is a large bearing capable of bearing comprehensive load, which can simultaneously bear large axial, radial load and overturning moment.

[0034] Further, the upper guide rail and the lower guide rail are roller guide rails or sliding platform guide rails.

[0035] The roller guide rail is also called a rolling guide rail, which is a kind of linear guide rail. Linear guide rails are generally of two types, one is rolling type and the other is sliding type. The rolling linear guide rail is a rolling guide, which makes the load platform easily move along the sliding rail with high precision through the infinite rolling circulation of steel balls between the sliding block and the sliding rail. The friction coefficient can be reduced to 1 / 50 of the traditional sliding guide, so that the positioning accuracy of μm level can be easily achieved.

[0036] In another specific embodiment, the forced guiding mechanism of the maglev train of the present application further comprises an intermediate connecting plate 6, as shown in the figure. Figure 5 As shown in the figure, the intermediate connecting plate 6 is arranged between the transverse guide rail 5 and the longitudinal guide rail 4. Through this structural arrangement, the strength of the connection structure is increased, and the connection between the transverse guide rail 5 and the longitudinal guide rail 4 is more reliable. In order to facilitate the observation of the rotary bearing 2 in this embodiment, Figure 6 In this embodiment, the side surface of the intermediate connecting plate 6 is used for connecting the lateral pull rod, and the lateral pull rod is connected with the connecting structure of the intermediate connecting plate 6 through a bolt or a pin. The connecting structure here can be the lateral pull rod connecting lug 101 structure in the above embodiment.

[0037] The forced guiding mechanism of the maglev train of the present application, the transverse guide rail 5 is fixedly connected with the bottom plate of the maglev vehicle, the air spring 3 can rotate relative to the vehicle body around the rotary axis, and the air spring 3 can move along the upper and lower guide rails of the cross guide rail assembly, so as to compensate for the displacement and rotation angle of the suspension module and the vehicle body when the maglev vehicle passes through a curve.

[0038] The magnetic levitation train's force guiding mechanism includes a T-arm assembly, which includes a long T-arm assembly and a short T-arm assembly. The long T-arm assembly has a long T-arm, which will generate a large deformation when transmitting the guiding force of the magnetic levitation vehicle. The short T-arm assembly has a short T-arm, which has a large rigidity and a small deformation under force. Therefore, when the magnetic levitation vehicle turns, the displacement ratio of the end portions of the long and short T-arms changes, and the deformation of the long and short T-arms is not coordinated.

[0039] To solve the above problems, the application further provides a T-arm assembly, as shown in the drawings. Figure 5 The T-arm assembly includes a T-arm rod 7, a center shaft 8, a swing arm 9 and a connecting rod 10. One end of the T-arm rod 7 is fixedly connected to one end of the center shaft 8, and the other end of the center shaft 8 is fixedly connected to the center position of the swing arm 9. The end of the swing arm 9 is rotatably connected to one end of the connecting rod 10, and the other end of the connecting rod 10 is rotatably connected to the end of the T-arm rod 7 away from the center shaft 8 (i.e. the distal end of the T-arm rod 7).

[0040] Specifically, the connecting rod 10 is provided with two, and the two connecting rods 10 are symmetrically arranged at the two ends of the swing arm 9, that is, one end of the swing arm 9 is rotatably connected to one end of one connecting rod 10, and the other end is rotatably connected to one end of the other connecting rod 10. The other ends of the two connecting rods 10 are rotatably connected to the distal end hinge point of the T-arm rod 7, which is the hinge point of the end of the T-arm rod 7 away from the center shaft 8.

[0041] In order to facilitate the rotatable connection, the end of the T-arm rod 7 (the distal end hinge point of the T-arm rod 7) for connecting the connecting rod 10 is provided with a rotating shaft seat 11, and the ends of the two connecting rods 10 are rotatably connected to the rotating shaft seat 11 through respective rotating shafts. As shown in the drawings, Figure 5 The rotating shaft seat 11 is a seat body provided with a groove structure, and the groove is a through groove. In order to facilitate connection, the groove is arranged on the side facing the connecting rod 10, and the rotating shaft seat 11 is welded on the T-arm rod 7. It can be understood that, in order to avoid the influence of the rotating shaft seat 11 on the connection between the T-arm rod 7 and the cross rod, the rotating shaft seat 11 avoids the connection through hole between the T-arm rod 7 and the cross rod.

[0042] Further, the T-arm rod 7 and the center shaft 8 are connected by a bolt or key connection, and the center shaft 8 and the swing arm 9 are connected by a bolt or key connection.

[0043] The T-arm assembly in the prior art does not have the above-mentioned connecting rod 10, and the T-arm rod 7 transmits the transverse force of the magnetic levitation vehicle to the swing arm 9 through the center shaft 8. At this time, the T-arm assembly is easy to generate a large deformation under the action of a large transverse force, which will affect the displacement ratio of the long and short T-arms.

[0044] The T-arm assembly provided by the application increases two connecting rods 10, when the T-arm transmits lateral force, not only can directly transmit the lateral force to the end of the rotating arm 9 through the two connecting rods 10, but also the central shaft 8 can transmit a part of the torque generated by the lateral force to the rotating arm 9, so that the connection requirements of the T-arm rod 7 and the central shaft 8 are reduced in structure, the connection requirements of the rotating arm 9 and the central shaft 8 are reduced, and the structure requirements of the single parts of the central shaft 8, the rotating arm 9 and the T-arm rod 7 are reduced. On the other hand, according to the force balance and the structure characteristics of the new T-arm assembly, the deformation of the T-arm rod 7 under lateral force will be greatly reduced, and when the long and short T-arm assemblies are all the T-arm assemblies with the above structure, the change of the displacement ratio of the long and short T-arm assemblies caused by the deformation of the T-arm rod 7 under force is effectively avoided.

[0045] The application sets a new type of steering mechanism between the vehicle body and the suspension frame of the maglev vehicle, adopts a cross rotary slide table structure formed by a lateral guide rail 5 and a longitudinal guide rail 4, and is used for transmitting vertical support force. The cross rotary slide table structure is arranged at the end of the corresponding suspension frame according to specific use requirements, the upper part is connected with the vehicle body, and the lower part is connected with the air spring 3 of the suspension frame. For a five-suspension-frame maglev vehicle, the cross rotary slide table of the application is arranged at the end of the I-position suspension frame and the V-position suspension frame, and other number of suspension frames can also be configured with the above cross rotary slide table, and for other number of suspension frame maglev vehicles, the cross rotary slide table can be arranged at a suitable position according to needs. The cross rotary slide table structure allows the air spring 3 and the vehicle body to move in X and Y directions, and allows the air spring 3 to rotate around the central axis of the air spring 3 relative to the vehicle body, so that the displacement and rotation angle of the suspension module and the vehicle body in each direction can be compensated when the maglev vehicle passes through a curve, the maglev vehicle can smoothly pass through the curve track, the stress of the suspension module, the air spring 3 and the vehicle body is reduced, the service life of the air spring 3 is prolonged, the movement in each direction is more smooth, and the structure of the cross rotary slide table does not need to be changed when the structure of the suspension module is changed, and the universality of the forced guiding mechanism is increased.

[0046] The forced guiding mechanism of the maglev train provided by the application is suitable for various types of maglev vehicles such as normal-conductor attraction type, normal-conductor repulsion type, superconducting attraction type and superconducting repulsion type, and is especially suitable for normal-conductor attraction type maglev vehicles.

[0047] In the description of the present application, it should be understood that the terms "upper", "lower", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0048] In addition, the terms "first", "second", etc. are used only to describe the purpose and are not to be construed as indicating or implying relative importance or a number of indicated technical features. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present solution, the meaning of "a plurality" is two or more, unless otherwise expressly and specifically limited.

[0049] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be mutually referred to.

[0050] The above description of disclosed embodiments enables a person skilled in the art to implement or use the invention. Various modifications to these embodiments will be apparent to a person skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A forced guidance mechanism for a magnetic levitation train, comprising a tie rod and a T-arm assembly, characterized in that, A cross-shaped rotary slide is connected to the cross tie rod. The cross-shaped rotary slide includes a lower slide. The lower surface of the lower slide is connected to an air spring on the suspension frame. A cross guide rail assembly is provided on the upper surface of the lower slide. The upper end of the cross guide rail assembly is connected to the vehicle body. The lower surface of the sliding platform is connected to the air spring via a slewing bearing. One end of the slewing bearing is connected to the air spring via a bolt, and the other end is connected to the sliding platform via a bolt.

2. The forced guidance mechanism for a magnetic levitation train according to claim 1, characterized in that, The cross rail assembly includes an upper rail and a lower rail that are arranged in a cross configuration. The lower rail is connected to the lower slide platform by bolts, and the upper rail is connected to the vehicle body by bolts.

3. The forced guidance mechanism for a magnetic levitation train according to claim 1 or 2, characterized in that, The cross rail assembly includes a transverse rail and a longitudinal rail, which are arranged perpendicularly.

4. The forced guidance mechanism for a magnetic levitation train according to claim 2, characterized in that, The upper and lower guide rails are roller guide rails or slide rails.

5. The forced guidance mechanism for a magnetic levitation train according to claim 2, characterized in that, It also includes an intermediate connecting plate, which is disposed between the upper guide rail and the lower guide rail.

6. The forced guidance mechanism for a magnetic levitation train according to claim 1, characterized in that, The T-arm assembly includes a T-arm rod, a central shaft, a rotating arm, and a connecting rod. One end of the T-arm rod is fixedly connected to one end of the central shaft, and the other end of the central shaft is fixedly connected to the center position of the rotating arm. One end of the connecting rod is rotatably connected to the end of the rotating arm, and the other end of the connecting rod is rotatably connected to the end of the T-arm rod away from the central shaft.

7. The forced guidance mechanism for a magnetic levitation train according to claim 6, characterized in that, There are two connecting rods, which are symmetrically arranged at both ends of the rotating arm.

8. The forced guidance mechanism for a magnetic levitation train according to claim 7, characterized in that, The T-arm is equipped with a pivot seat at the end of the connecting rod, and the ends of the two connecting rods are rotatably connected to the pivot seat via their respective pivots.

9. The forced guidance mechanism for a magnetic levitation train according to claim 6, characterized in that, The T-arm is connected to the central shaft by bolts or keys, and the central shaft is connected to the rotating arm by bolts or keys.

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