Medium or low speed maglev vehicle and levitation chassis thereof

Abstract

A medium or low speed maglev vehicle and a levitation chassis thereof. The levitation chassis comprises a levitation chassis body (10), brackets (3), and sliding table assemblies (40), wherein the levitation chassis body (10) comprises two longitudinal beams (1) and a cross beam (2), and two ends of the cross beam (2) are fixedly connected to the middle parts of the longitudinal beams (1), respectively; the brackets (3) are located at two ends of each longitudinal beam (1); two sliding table assemblies (40) are provided, and the two sliding table assemblies (40) are located on the two longitudinal beams (1), respectively; and each sliding table assembly (40) comprises a sliding table (41), an air spring (42) and a connecting rod (43), the bottom of the air spring (42) being fixedly connected to the middle of the top of the corresponding longitudinal beam (1), the top of the air spring (42) being fixedly connected to the bottom of the sliding table (41), and the sliding table (41) being hinged to the levitation chassis body (10) by means of the connecting rod (43).

Description

A medium- and low-speed magnetic levitation vehicle and its suspension frame Technical Field

[0001] The present invention relates to the technical field of magnetic levitation vehicles, and in particular to a medium- and low-speed magnetic levitation vehicle and a suspension frame thereof.

[0002] Background Art

[0003] Low- and medium-speed maglev vehicles typically use a method that independently controls the suspension gap between the electromagnet modules on either side of the suspension frame. Therefore, to prevent the changes in the suspension gap between the two electromagnets from interfering with each other, the suspension frame must have a certain degree of decoupling capability, ensuring that the vertical displacement of the two electromagnets is relatively independent.

[0004] Chinese invention patent application publication number CN111483326A discloses a low-to-medium-speed maglev train suspension frame and maglev train. This suspension frame utilizes two parallelogram-shaped anti-roll decoupling structures located at each end of the suspension frame for decoupling. However, this structure has several complex connecting parts, and the tolerances between these parts can easily add up, leading to relative deviations between the inner and outer plates of the electromagnets, which is detrimental to suspension stability. Furthermore, the anti-roll decoupling structures, located at both ends of the suspension frame and equipped with air springs, occupy significant underframe equipment space, hindering underframe equipment layout and increasing vehicle cost. Summary of the Invention

[0005] The present application provides a medium- and low-speed maglev vehicle and its suspension frame, thereby solving the problem that the suspension frame of existing medium- and low-speed maglev vehicles has a complex structure, is not conducive to the arrangement of chassis equipment, and increases vehicle costs.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions.

[0007] On the one hand, a suspension frame for a medium- and low-speed magnetic levitation vehicle is provided, comprising a suspension frame body, a supporting arm, and a slide assembly;

[0008] The suspension frame body includes two longitudinal beams and a transverse beam, and the two ends of the transverse beam are respectively fixedly connected to the middle parts of the two longitudinal beams; the supporting arms are located at the two ends of the longitudinal beams;

[0009] There are two slide assemblies, and the two slide assemblies are respectively located on the two longitudinal beams;

[0010] The slide assembly includes a slide, an air spring and a connecting rod. The bottom of the air spring is fixedly connected to the middle of the top of the longitudinal beam, the top of the air spring is fixedly connected to the bottom of the slide, and the slide is hinged to the suspension frame body through the connecting rod.

[0011] In some embodiments, a linear motor is installed at the bottom of the longitudinal beam.

[0012] In some embodiments, the support arm is in a C-shape that bends toward the inner side of the suspension frame body, and the top of the support arm is fixedly connected to the longitudinal beam.

[0013] In some embodiments, a suspension assembly is provided below each of the two longitudinal beams;

[0014] The suspension assembly includes two electromagnet pole plates, a connecting plate and an electromagnet coil, wherein the two electromagnet pole plates are connected by the connecting plate, and the electromagnet coil is sandwiched between the two electromagnet pole plates;

[0015] Mounting holes are provided at both ends of the electromagnet pole plate, and the connecting plate is located at the bottom of the mounting holes;

[0016] A rubber pile is provided in the mounting hole, the bottom of the rubber pile is connected to the upper surface of the connecting plate, and the bottom of the supporting arm is inserted into the mounting hole and connected to the top of the rubber pile.

[0017] In some embodiments, a linear motor is installed at the bottom of the longitudinal beam. When the maglev vehicle is on the track, the longitudinal beam and the suspension assembly are respectively located above and below the track.

[0018] In another aspect, the present invention provides a magnetic levitation vehicle suspension frame, comprising a suspension frame body, a supporting arm, and a rubber pile, wherein the suspension frame body comprises two longitudinal beams and a transverse beam, wherein both ends of the transverse beam are respectively fixedly connected to the middle portions of the two longitudinal beams;

[0019] A suspension assembly is provided below each of the two longitudinal beams; the top of the support arm is fixedly connected to the longitudinal beam, the bottom of the support arm is connected to the top of the rubber pile, and the bottom of the rubber pile is connected to the suspension assembly.

[0020] In some embodiments, the suspension assembly includes two electromagnet plates, a connecting plate, and an electromagnet coil, wherein the two electromagnet plates are connected by the connecting plate, and the electromagnet coil is sandwiched between the two electromagnet plates;

[0021] Mounting holes are provided at both ends of the electromagnet pole plate, and the connecting plate is located at the bottom of the mounting holes;

[0022] The rubber pile is arranged in the mounting hole, the bottom of the rubber pile is connected to the upper surface of the connecting plate, and the bottom of the supporting arm is inserted into the mounting hole and connected to the top of the rubber pile.

[0023] In some embodiments, the support arms are located at both ends of the longitudinal beam, and the support arms are in a C-shape that bends toward the inner side of the suspension frame body.

[0024] In some embodiments, a linear motor is installed at the bottom of the longitudinal beam. When the maglev vehicle is on the track, the longitudinal beam and the suspension assembly are respectively located above and below the track.

[0025] On the other hand, a medium- and low-speed maglev vehicle is provided, comprising a maglev vehicle body and the above-mentioned maglev vehicle suspension frame, wherein the maglev vehicle body is arranged on the maglev vehicle suspension frame.

[0026] In some embodiments, the medium- and low-speed maglev vehicle further includes a slide rail, which is arranged at the bottom of the maglev vehicle body and along the width direction of the maglev vehicle body;

[0027] The magnetic levitation vehicle suspension frame further includes a slide, which is hinged to the suspension frame body via the connecting rod; and the slide is slidably connected to the slide rail.

[0028] This application has at least the following technical effects or advantages:

[0029] 1. Two longitudinal beams and one transverse beam form an I-shaped frame, making the structure more stable. The air spring is positioned in the middle of the longitudinal beam, giving the vehicle better ability to maneuver through curves. Furthermore, compared to existing parallelogram structures, the I-shaped frame takes up less space, leaving more room under the vehicle for equipment placement.

[0030] 2. Compared with the existing technology, the number of air springs and slides is reduced by half, the suspension frame structure is simplified, the chassis equipment space can be increased, and the manufacturing cost is reduced.

[0031] 3. The electromagnetic decoupling method is used to replace the suspension frame decoupling, which has a simple structure and small cumulative error, and reduces the constraints of the suspension frame decoupling on the suspension frame structure design. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic structural diagram of a suspension frame for a medium- and low-speed magnetic levitation vehicle according to an embodiment of the present application;

[0033] FIG2 is a schematic structural diagram of a suspension frame body according to an embodiment of the present application;

[0034] FIG3 is a schematic structural diagram of a suspension assembly according to an embodiment of the present application (the rubber pile is omitted);

[0035] FIG4 is a front view of FIG1;

[0036] FIG5 is a cross-sectional view taken along line AA of FIG4 ;

[0037] FIG6 is an enlarged schematic diagram of area B in FIG5 ;

[0038] FIG7 is a schematic structural diagram of a rubber pile in one embodiment of the present application;

[0039] FIG8 is a schematic diagram of the connection relationship between the suspension frame and the slide rail of a medium- and low-speed magnetic levitation vehicle in one embodiment of the present application;

[0040] FIG9 is a schematic structural diagram of a medium- and low-speed magnetic levitation vehicle equipped with a suspension frame according to an embodiment of the present application;

[0041] FIG10 is a schematic diagram of a suspension frame connected to a slide rail disposed on a track when viewed from the rear of the vehicle to the front in one embodiment of the present application (the magnetic levitation vehicle body is not shown);

[0042] FIG11 is a schematic diagram of a three-dimensional structure in which two adjacent suspension frames connected to a slide rail are arranged on a track in one embodiment of the present application (the maglev vehicle body is not shown). DETAILED DESCRIPTION

[0043] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0044] In each of the drawings, “length direction,” “width direction,” and “height direction” refer to the length direction, width direction, and height direction of the maglev vehicle, respectively.

[0045] As shown in Figures 1, 2, 4 and 8, a suspension frame for a maglev vehicle includes a suspension frame body 10, a support arm and a slide assembly. The suspension frame body 10 includes two longitudinal beams 1 and a cross beam 2, and the two longitudinal beams 1 and the cross beam 2 form an I-shaped frame. The two ends of the cross beam 2 are fixedly connected to the middle of the two longitudinal beams 1 respectively. A linear motor 11 is installed at the bottom of the longitudinal beam 1. A linear motor mounting hole can be opened at the bottom of the longitudinal beam 1, and the linear motor 11 is hoisted under the longitudinal beam 10. The longitudinal beam 1 is parallel to the length direction of the maglev vehicle, and the cross beam 2 is parallel to the width direction of the maglev vehicle.

[0046] The supporting arms 3 are located at both ends of the longitudinal beam 1 . The supporting arms 3 are C-shaped and bent inwardly of the suspension frame body 10 . The top of the supporting arms 3 is fixedly connected to the longitudinal beam 1 and can be fixed to the end of the longitudinal beam 1 .

[0047] As shown in Figures 1, 4, 5, 8, and 9, two slide assemblies 40 are provided, one located on each longitudinal beam 1. The slide assemblies 40 include a slide 41, an air spring 42, and a connecting rod 43. The bottom of the air spring 42 is fixedly connected to the middle of the top of the longitudinal beam 1, while the top of the air spring 42 is fixedly connected to the bottom of the slide 41. The slide 41 is hingedly connected to the suspension frame body 10 via the connecting rod 43 and a hinge 44. The connecting rod 43 is hingedly connected to the hinge 44 (which serves as a mounting base for the connecting rod 43). The connecting rod 43 is used to transmit traction between the suspension frame and the maglev vehicle body 7. The maglev vehicle body 7 is mounted on the slide 41. The suspension frame pulls the maglev vehicle body 7 via the connecting rod 43, causing the maglev vehicle body 7 to advance together with the suspension frame.

[0048] As shown in Figures 1, 3, 4, 5, 6, 8, and 9, a suspension assembly 50 is provided below each longitudinal beam 1. The suspension assembly 50 comprises two electromagnet plates 51, a connecting plate 52, and an electromagnet coil 53. The two electromagnet plates 51 are connected by the connecting plate 52, and the electromagnet coil 53 is sandwiched between the two electromagnet plates 51. Mounting holes 54 are provided at both ends of the electromagnet plates 51. The connecting plate 52 is located at the bottom of the mounting holes 54. That is, the connecting plate 52 overlaps the corresponding mounting holes 54 of the two parallel electromagnet plates 51, thereby enhancing the vertical support capacity of the connecting plate 52. A rubber pile 6 is provided within the mounting hole, the bottom of which is connected to the upper surface of the connecting plate 52. The bottom of the support arm 3 is inserted into the mounting hole 54 and connected to the top of the rubber pile 6. The bottom of the support arm 3 can be provided with an opening, and mounting members (such as locating studs or mounting bolts) can be installed at the top and bottom of the rubber stack 6. The mounting member on the top of the rubber stack 6 can extend into the opening at the bottom of the support arm 3, thereby connecting the bottom of the support arm 3 to the top of the rubber stack 6. The bottom of the rubber stack 6 can also be mounted on the connecting plate 52 via a mounting member. Figure 7 shows the structure of the rubber stack 6, which can utilize a laminated spring. The electromagnet structure includes electromagnet pole plates 51 and electromagnet coils 53. The electromagnet coils 53 can be wound around an iron core (not shown). When energized, a magnetic field and magnetic force are generated at both ends of the iron core. The electromagnet pole plates 51 function to convert the transverse magnetic field generated by the iron core into a vertical magnetic field, generating an upward attraction force on the rail. Here, the electromagnet coils 53 can also be referred to as electromagnet coils. It is understood in the art that it is also feasible to provide only the electromagnet coils 53 without the iron core.

[0049] As shown in Figures 1, 4, 5, and 8, the electromagnet pole plate 51 on the left side of the maglev vehicle in the width direction is connected to the support arm 3 on the left side in the width direction via a corresponding flexible rubber pile 6. The electromagnet pole plate 51 on the right side in the width direction is connected to the support arm 3 on the right side in the width direction via a corresponding flexible rubber pile 6. The provision of the rubber pile 6 reduces interference between the electromagnet modules on the left and right sides in the width direction when subjected to electromagnetic force, thereby achieving decoupling between the electromagnets.

[0050] In addition, since the rubber pile 6 has vertical stiffness, when the suspension frame is subjected to a lateral force (force in the width direction) and generates an overturning moment, the two rubber piles 6 located on the left and right sides in the width direction are deformed, generating a reverse moment to prevent the suspension frame from rolling, thereby achieving the anti-roll function.

[0051] As shown in Figure 1, in order to reduce the weight of the vehicle, two bracket arms 3 can be set in parallel at the end of the longitudinal beam, and the two bracket arms 3 are connected by a connecting beam. If weight is not a concern, one bracket arm 3 can also be used instead of two bracket arms 3 set in parallel.

[0052] When the electromagnet coil 53 is not energized, the rubber pile 6 is in a downward stretched state in the height direction due to the action of gravity; when the electromagnet coil 53 is energized, the track 9 generates an upward suction force on the electromagnet coil 53, and the electromagnet coil 53 tends to move upward, causing the electromagnet pole plate 51 to also tend to move upward. However, since the support arm 3 is rigid, the lower end of the support arm 3 squeezes the rubber pile 6 downward, causing the rubber pile 6 to be in a compressed state.

[0053] The present invention also provides a maglev train, as shown in Figures 8 and 9, comprising the aforementioned maglev vehicle suspension frame and a maglev vehicle body 7. Slide rails 8 are provided at the bottom of the maglev vehicle body 7 along the width of the maglev vehicle body 7. The slide rails 8 are slidably connected to a slide platform 41. The provision of the slide rails 8 enables the suspension frame to produce lateral displacement relative to the maglev vehicle body 7, enabling the vehicle to traverse curved routes.

[0054] As shown in Figures 10 and 11, track 9 is the track for the maglev vehicle and can be an F-shaped track. Two F-shaped tracks can be set on the base 91, and the extension directions of the two F-shaped tracks are parallel to each other. When the maglev vehicle is located on track 9, the linear motor 11 and the electromagnet structure are respectively located above and below the track 9. When the electromagnet coil 53 is energized, the electromagnet pole plate 51 generates an attractive force on the track 9, causing the maglev vehicle to levitate. The support arm 3 is arranged to surround the track 9, thereby preventing the train from derailing and improving vehicle safety.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A suspension frame of a maglev vehicle, characterized in that: It includes a suspension frame body (10), a support arm (3) and a slide table assembly (40); The suspension frame body (10) includes two longitudinal beams (1) and a cross beam (2). The two ends of the cross beam (2) are respectively fixedly connected to the middle parts of the two longitudinal beams (1); the support arm (3) is located at the two ends of the longitudinal beam (1); There are two slide table assemblies (40), and the two slide table assemblies (40) are respectively located on the two longitudinal beams (1); The slide table assembly (40) includes a slide table (41), an air spring (42) and a connecting rod (43). The bottom of the air spring (42) is fixedly connected to the middle part of the top of the longitudinal beam (1), the top of the air spring (42) is fixedly connected to the bottom of the slide table (41), and the slide table (41) is hinged to the suspension frame body (10) through the connecting rod (43).

2. The maglev vehicle suspension frame according to claim 1, characterized in that: A linear motor (11) is installed at the bottom of the longitudinal beam (1).

3. The magnetic levitation vehicle suspension frame according to claim 1 or 2, characterized in that: The support arm (3) is in a C shape bent inward towards the suspension frame body (10), and the top of the support arm (3) is fixedly connected to the longitudinal beam (1).

4. The maglev vehicle suspension frame according to claim 1 or 2, characterized in that: A suspension assembly (50) is provided below each of the two longitudinal beams (1); The suspension assembly (50) includes two electromagnet plates (51), a connecting plate (52) and an electromagnet coil (53). The two electromagnet plates (51) are connected through the connecting plate (52), and the electromagnet coil (53) is clamped between the two electromagnet plates (51); mounting holes (54) are provided at the two ends of the electromagnet plate (51), and the connecting plate (52) is located at the bottom of the mounting holes (54); a rubber stack (6) is provided in the mounting holes (54), the bottom of the rubber stack (6) is connected to the upper surface of the connecting plate (52), and the bottom of the support arm (3) is inserted into the mounting holes (54) and connected to the top of the rubber stack (6).

5. A suspension frame of a maglev vehicle, characterized in that: It includes a suspension frame body (10), a support arm (3), a rubber stack (6). The suspension frame body (10) includes two longitudinal beams (1) and a cross beam (2). The two ends of the cross beam (2) are respectively fixedly connected to the middle parts of the two longitudinal beams (1); a suspension assembly (50) is provided below each of the two longitudinal beams (1); the top of the support arm (3) is fixedly connected to the longitudinal beam (1), the bottom of the support arm (3) is connected to the top of the rubber stack (6), and the bottom of the rubber stack (6) is connected to the suspension assembly (50).

6. The magnetic suspension frame of a maglev vehicle according to claim 5, wherein: The suspension assembly (50) includes two electromagnetic pole plates (51), a connecting plate (52) and an electromagnetic coil (53). The two electromagnetic pole plates (51) are connected by the connecting plate (52), and the electromagnetic coil (53) is clamped between the two electromagnetic pole plates (51). Mounting holes (54) are provided at both ends of the electromagnetic pole plate (51), and the connecting plate (52) is located at the bottom of the mounting holes (54). A rubber stack (6) is provided in the mounting holes (54). The bottom of the rubber stack (6) is connected to the upper surface of the connecting plate (52). The bottom of the support arm (3) is inserted into the mounting holes (54) and connected to the top of the rubber stack (6).

7. The maglev vehicle suspension frame according to claim 5 or 6, characterized in that: The support arms (3) are located at both ends of the longitudinal beam (1), and the support arms (3) are C-shaped and bent inward towards the suspension frame body (10).

8. The maglev vehicle suspension frame according to claim 5 or 6, characterized in that: A linear motor (11) is installed at the bottom of the longitudinal beam (1).

9. A medium and low speed maglev vehicle, comprising a maglev vehicle car body (7), characterized in that: It further includes a maglev vehicle suspension frame according to any one of claims 1-8, and the maglev vehicle body (7) is disposed on the maglev vehicle suspension frame.

10. The medium and low speed maglev vehicle according to claim 9, characterized in that: It further includes a slide rail (8), and the slide rail (8) is disposed at the bottom of the maglev vehicle body (7) and is arranged along the width direction of the maglev vehicle body (7). The maglev vehicle suspension frame further includes a slide table (41), and the slide table (41) is hinged to the suspension frame body (10) through the connecting rod (43). The slide table (41) is slidably connected to the slide rail (8).

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