Suspension frame suitable for superconducting electric magnetic suspension

Abstract

The invention discloses a suspension frame suitable for superconducting electric magnetic suspension, which comprises a framework, a support wheel assembly, a guide wheel assembly, an emergency support device, an emergency guide device, a longitudinal shock absorber, a transverse shock absorber, a vertical shock absorber, an elastic device and a damping device, the supporting and guiding hydraulic equipment is arranged between cross beams and end beams of the framework or between the cross beams and located at the position where the magnetic field intensity between the left superconducting magnet and the right superconducting magnet is minimum, and when train electromagnetic suspension force and guiding force are insufficient, the supporting wheel assembly provides supporting force, and the guiding wheel assembly provides guiding force; when the superconducting magnet, the guide wheel assembly or the supporting wheel assembly breaks down, the emergency guide device relieves transverse collision and provides stable supporting, and the emergency supporting device relieves vertical collision and provides stable supporting. The longitudinal shock absorbers, the transverse shock absorbers and the vertical shock absorbers are used for providing damping force for a train, the elastic devices are arranged at the two ends of the tops of the end beams and used for transmitting three-way loads, and the damping devices are arranged on the outer sides of the superconducting magnets and used for providing electromagnetic damping.

Description

Technical Field

[0001] The present invention relates to the technical field of the running mechanism of maglev vehicles, and particularly relates to a suspension frame applicable to superconducting electromagnetic suspension. Background Art

[0002] Superconducting electromagnetic suspension generates thrust by the interaction between on-vehicle superconducting magnets and traveling wave magnetic fields generated by ground propulsion coils, and realizes suspension and guidance by cutting ground figure-eight coils with on-vehicle superconducting magnets. It has the advantages of passive suspension and guidance, large suspension and guidance gaps, low requirements for track irregularities, and the non-derailment of the rail vehicle, and is particularly suitable for high-speed and ultra-high-speed rail transit of 600 km / h and above. The suspension frame is one of the core subsystems of a superconducting electromagnetic suspension train. Superconducting magnets, support wheel and guide wheel devices, suspension devices, emergency support and guidance devices, etc. are integrally installed on its frame, and it has functions such as load bearing, traction, suspension, guidance, and braking.

[0003] The superconducting magnets used in superconducting electromagnetic suspension have strong magnetic fields and large influence ranges, and the magnetic field intensity in the suspension frame area is the largest. The strong magnetic field will affect the normal operation of the hydraulic system and the control system. To solve this problem, in the prior art, both the hydraulic system and the control system are installed on the vehicle body. However, on the one hand, this causes a large amount of waste of space on the suspension frame; on the other hand, installing the hydraulic system on the vehicle body requires connecting / disconnecting pipelines every time the suspension frame is separated from and combined with the vehicle body, and re-performing pressure resistance, exhaust, and debugging and calibration of the synchronization and braking pressure build-up time for the hydraulic system, which consumes a large amount of manpower, material resources, and time, and reduces the supportability and maintainability of the suspension frame. Summary of the Invention

[0004] The present invention provides a suspension frame applicable to superconducting electromagnetic suspension, which can solve the technical problems in the prior art.

[0005] The present invention provides a suspension frame applicable to superconducting electromagnetic suspension, wherein the suspension frame includes a frame, a support wheel assembly, a guide wheel assembly, an emergency support device, an emergency guidance device, a longitudinal shock absorber, a lateral shock absorber, a vertical shock absorber, an elastic device, and a damping device.

[0006] The frame includes side beams, end beams, and cross beams. The superconducting magnets are arranged on the side beams, and the support and guide hydraulic equipment is arranged between the cross beam and the end beam or between the cross beams of the frame and is at the position with the minimum magnetic field intensity in the middle of the left and right superconducting magnets. The support wheel assembly is arranged on the inner side surface of the side beam, and the guide wheel assembly is arranged on the outer side surface of the end beam. When the electromagnetic suspension force and guidance force of the train are insufficient, the support wheel assembly provides a support force and the guide wheel assembly provides a guidance force to maintain the operation of the train.

[0007] The emergency support device is arranged at the bottom of the end beam, and the emergency guiding device is arranged at the top of the end beam. When the superconducting magnet, the guiding wheel assembly or the supporting wheel assembly fails, the emergency guiding device is used to mitigate lateral collisions and provide stable support, while the emergency support device is used to mitigate vertical collisions and provide stable support;

[0008] The longitudinal shock absorber is arranged at the top of the cross beam, the lateral shock absorber is arranged on the end beam, and the vertical shock absorber is arranged outside the end beam. The longitudinal shock absorber, the lateral shock absorber and the vertical shock absorber are used to provide damping force for the train. The elastic device is arranged at both ends of the top of the end beam for transmitting three-directional loads, and the damping device is arranged outside the superconducting magnet for providing electromagnetic damping.

[0009] Preferably, the frame further includes an equipment mounting plate for arranging the support and guiding hydraulic equipment. The equipment mounting plate is arranged between the cross beams or between the end beam and the cross beam.

[0010] Preferably, the equipment mounting plate reserves an installation interface for the magnetic shielding housing.

[0011] Preferably, the action directions of the reversing valve, throttle valve, proportional valve, check valve and stop valve of the support and guiding hydraulic equipment are parallel to the train forward direction X or parallel to the train vertical direction Z.

[0012] Preferably, the supporting wheel assembly is internally provided with a brake unit for providing mechanical braking force when the train lands.

[0013] Preferably, the elastic device is a conical rubber spring.

[0014] Preferably, the side beam, the end beam and the cross beam are connected in a mu-shaped structure.

[0015] Preferably, the material of the frame is aluminum alloy profiles and plates.

[0016] Preferably, the damping device is a damping coil.

[0017] Through the above technical solutions, the support and guiding hydraulic equipment can be arranged in the suspension frame area and ensured to operate normally in a strong magnetic field environment, which not only saves a large amount of installation space, but also improves the guaranteeability and maintainability of the suspension frame system. Description of the Drawings

[0018] The accompanying drawings included are used to provide a further understanding of the embodiments of the present invention, which form a part of the specification, illustrate the embodiments of the present invention, and together with the written description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 An axonometric view of a suspension frame applicable to superconducting electromagnetic levitation according to an embodiment of the present invention is shown;

[0020] Figure 2 A front view of a suspension frame applicable to superconducting electromagnetic levitation according to an embodiment of the present invention is shown;

[0021] Figure 3 A top view of a suspension frame applicable to superconducting electromagnetic levitation according to an embodiment of the present invention is shown;

[0022] Figure 4 A top view of the suspension frame area coil according to an embodiment of the present invention is shown;

[0023] Figure 5 A front view of the suspension frame area coil according to an embodiment of the present invention is shown;

[0024] Figure 6 A schematic diagram showing the perpendicular arrangement of the action direction of the support and guide hydraulic equipment and the magnetic field line direction according to an embodiment of the present invention is shown. Detailed implementation manners

[0025] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0026] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0027] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0028] As Figures 1-3 shown, an embodiment of the present invention provides a suspension frame applicable to superconducting electromagnetic levitation. Among them, the suspension frame includes a frame 1, a support wheel assembly 5, a guide wheel assembly 11, an emergency support device 12, an emergency guide device 10, a longitudinal shock absorber 3, a lateral shock absorber 6, a vertical shock absorber 7, an elastic device 2, and a damping device 9.

[0029] The frame 1 includes side beams, end beams 1.1, and cross beams 1.2. The superconducting magnet 8 is arranged on the side beams. The support and guide hydraulic equipment 4 is arranged between the cross beam 1.2 and the end beam 1.1 of the frame 1 or between the cross beams 1.2 and is at the position with the minimum intermediate magnetic field intensity between the left and right superconducting magnets 8. The support wheel assembly 5 is arranged on the inner side surface of the side beam. The guide wheel assembly 11 is arranged on the outer side surface of the end beam 1.1. When the electromagnetic levitation force and guiding force of the train are insufficient, the support wheel assembly 5 provides a supporting force and the guide wheel assembly 11 provides a guiding force to maintain the operation of the train.

[0030] The emergency support device 12 is arranged at the bottom of the end beam 1.1, and the emergency guide device 10 is arranged at the top of the end beam 1.1. When the superconducting magnet 8, the guide wheel assembly 5, or the support wheel assembly 10 fails, the emergency guide device 10 is used to relieve lateral collisions and provide stable support, and the emergency support device 12 is used to relieve vertical collisions and provide stable support until the train stops.

[0031] The longitudinal shock absorber 3 is arranged on the top of the cross beam 1.2, the lateral shock absorber 6 is arranged on the end beam 1.1, and the vertical shock absorber 7 is arranged outside the end beam 1.1. The longitudinal shock absorber 3, the lateral shock absorber 6 and the vertical shock absorber 7 are used to provide damping force for the train. The elastic device 2 is arranged at both ends of the top of the end beam 1.1 for transmitting three-way loads, and the damping device 9 is arranged outside the superconducting magnet 8 for providing electromagnetic damping.

[0032] Through the above technical solution, the support and guide hydraulic equipment can be arranged in the suspension frame area and ensure its normal operation in a strong magnetic field environment, which not only saves a large amount of installation space but also improves the guarantee and maintainability of the suspension frame system.

[0033] According to an embodiment of the present invention, the frame 1 further includes an equipment mounting plate 1.3 for arranging the support and guide hydraulic equipment 4. The equipment mounting plate 1.3 is arranged between the cross beam 1.2 and the cross beam 1.2 or between the end beam 1.1 and the cross beam 1.2.

[0034] Alternatively, the support and guide hydraulic equipment 4 can also be arranged on the train car body.

[0035] According to an embodiment of the present invention, the equipment mounting plate reserves a mounting interface for the magnetic shielding housing.

[0036] By reserving the mounting interface for the magnetic shielding housing, a magnetic shielding housing connected to the mounting interface can be arranged outside the support and guide hydraulic equipment 4 to achieve external magnetic shielding.

[0037] According to an embodiment of the present invention, the action directions of the reversing valve, throttle valve, proportional valve, check valve and stop valve of the support and guide hydraulic equipment 4 are parallel to the train forward direction X or parallel to the train vertical direction Z.

[0038] Thus, the influence of the magnetic field on the equipment can be reduced.

[0039] According to an embodiment of the present invention, the support wheel assembly 5 is internally provided with a braking unit for providing mechanical braking force when the train lands.

[0040] According to an embodiment of the present invention, the elastic device 2 is a conical rubber spring.

[0041] According to an embodiment of the present invention, the side beam, the end beam 1.1 and the cross beam 1.2 are connected in a mu-shaped structure.

[0042] For example, at least two end beams, at least two side beams, and at least two cross beams can be connected by welding to form a structure in the shape of the Chinese character 'Mu'. The number of equipment mounting plates can be 1 - 3, which are installed between cross beams or between cross beams and longitudinal beams, and are all located at the position with the minimum intermediate magnetic field intensity between the left and right superconducting magnets.

[0043] According to an embodiment of the present invention, the material of the frame 1 is aluminum alloy profiles and plates.

[0044] Those skilled in the art should understand that the above materials and quantities of the present invention are merely exemplary and not used to limit the present invention.

[0045] According to an embodiment of the present invention, the damping device 9 is a damping coil.

[0046] According to an embodiment of the present invention, each superconducting magnet can include 2 sets or 4 sets of superconducting coils inside. If there are 2 sets of superconducting coils inside the superconducting magnet, 2 superconducting magnets are installed on each side of the suspension frame, that is, there are 4 superconducting magnets and 8 sets of coils on each suspension frame; if there are 4 sets of superconducting coils inside the superconducting magnet, 1 superconducting magnet is installed on each side of the suspension frame, that is, there are 2 superconducting magnets and 8 sets of coils on each suspension frame.

[0047] For example, the superconducting magnet can be fixedly installed on both sides of the frame by bolts or screws (16 pieces).

[0048] According to an embodiment of the present invention, the number of the support wheel assemblies and the guide wheel assemblies can be at least 4 sets respectively, and they are connected to the frame by bolts. The support wheel assemblies are installed on the inner side surface of the end beams of the frame to provide support force and braking force at the low - speed stage; the guide wheel assemblies are installed on both sides of the top of the outer side surface of the end beams of the frame to provide guiding force at the low - speed stage. When the train reaches the levitation speed, sufficient electromagnetic levitation force and guiding force are generated, and at this time, the support wheel assemblies and the guide wheel assemblies are retracted. When the speed in the descent stage reaches the descent speed, the support wheel assemblies and the guide wheel assemblies are released; the support wheel assemblies and the guide wheel assemblies both have the functions of retracting, releasing, and braking under the action of the support and guide hydraulic system and the support and guide control system.

[0049] According to an embodiment of the present invention, the emergency support device 12 can be an emergency support sliding shoe, and the emergency guiding device 10 can be an emergency guiding sliding shoe. The number of the emergency support sliding shoes and the emergency guiding sliding shoes can be at least 4 sets respectively, and they are connected to the frame by bolts or flanges. The emergency support sliding shoes are installed on both sides of the bottom of the end beam and are internally provided with buffer elements to provide support and buffering functions in case of emergency; the emergency guiding sliding shoes are installed on the top of both sides of the end beam and are internally provided with buffer elements to provide guiding and buffering functions in case of emergency; the emergency support sliding shoes protrude from the bottom of the train in the vertical direction, and there are several gaps between the vertical direction and the track, which does not affect normal operation; the emergency guiding sliding shoes protrude from both sides of the train in the guiding direction, and there are several gaps between the horizontal direction and the track, which does not affect normal operation. The above setting method plays a safety protection role in case of emergency, and there are several gaps between the horizontal and vertical directions and the track during normal operation.

[0050] According to an embodiment of the present invention, the number of the longitudinal dampers can be at least 2 sets, and they are installed on the mounting seats at the top of the frame cross beam by bolts to provide longitudinal damping for the train; the number of the lateral dampers can be at least 2 sets, and they are installed on the U-shaped profiles (mounting seats inside the profiles) of the frame end beam by bolts to provide lateral damping force for the train; the number of the vertical dampers can be 4 sets, and they are installed on the outer mounting seats of the frame end beam by bolts to provide vertical damping force for the train; the number of the conical rubber springs can be at least 4 sets, and their bottoms are installed at the four corners of the top of the frame by bolts, and the tops are connected to the car body to provide three-directional stiffness and partial damping for the vehicle; each superconducting magnet is equipped with 1 set of damping coils, which are installed on the outer side of the superconducting magnet by screws to provide damping for the train.

[0051] For a single superconducting magnet coil, the magnetic field is stronger closer to the center of the coil. For the 8 superconducting coils on the entire suspension frame, the magnetic field distribution is relatively complex. Taking the geometric center d of the 8 coils as a whole as the origin, a coordinate system is established according to the forward direction as X, the guiding direction as Y, and the right-hand screw rule direction as Z, as Figures 4-5 shown. In the forward direction X, the magnetic field intensity shows continuous strong and weak changes due to the mutual cancellation of the magnetic fields of adjacent 4 coils at the central intersection point, that is, the magnetic field intensities at points a, c, e, and g are large, and the magnetic field intensities at points b, d, and f are low; in the guiding direction Y, the magnetic field intensity is greater closer to the central plane of the coil, that is, the magnetic field intensity of the plane where points h and i are located is large; in the vertical direction Z, the magnetic field intensity is greater closer to the central plane of the coil, that is, the magnetic field intensity of the plane where points h and i are located is large.

[0052] It can be seen from this that there are areas with relatively low magnetic fields around the central intersection points b, d, and f of adjacent 4 coils that can be used to install equipment, and the larger the deviation in the vertical direction Z, the larger the area.

[0053] As an example, the support guiding hydraulic equipment is installed on the upper and lower parts of the equipment mounting plate between the cross beams or between the cross beam and the end beam. There is a suitable low magnetic field installation area after deviating from point d in the vertical direction Z, and it can work properly without using a magnetic shielding cover.

[0054] In addition, as Figure 6 shown, the action direction of the support guiding equipment installed between the cross beams or between the cross beam and the end beam is parallel to the forward direction X or parallel to the vertical direction Z. At this time, the magnetic field lines are perpendicular to the action direction of the equipment, and the equipment has the strongest anti-strong magnetic field ability.

[0055] In Figure 6 , represents that the action direction is parallel to the forward direction X, represents that the action direction is perpendicular to the paper surface and parallel to the vertical direction Z; Figure 2 The point d in Figures 4-5 is the same as the point d in Figure 3 The points b, d, and f in Figures 4-5 are the same as the points b, d, and f in

[0056] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0057] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will be positioned as "below other devices or structures" or "under other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.

[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional declaration, these terms have no special meaning, so it should not be construed as a limitation on the protection scope of the present invention.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A suspension frame applicable to superconducting electromagnetic levitation, characterized in that, the suspension frame includes a frame (1), a support wheel assembly (5), a guide wheel assembly (11), an emergency support device (12), an emergency guide device (10), a longitudinal shock absorber (3), a lateral shock absorber (6), a vertical shock absorber (7), an elastic device (2) and a damping device (9), the frame (1) includes side beams, end beams (1.1) and cross beams (1.2), a superconducting magnet (8) is arranged on the side beams, a support and guide hydraulic device (4) is arranged between the cross beam (1.2) and the end beam (1.1) of the frame (1) or between the cross beam (1.2) and the cross beam (1.2), and is at the position with the minimum magnetic field intensity in the middle of the left and right superconducting magnets (8), the support wheel assembly (5) is arranged on the inner side surface of the side beam, the guide wheel assembly (11) is arranged on the outer side surface of the end beam (1.1), when the electromagnetic levitation force and the guide force of the train are insufficient, the support wheel assembly (5) provides a support force and the guide wheel assembly (11) provides a guide force to maintain the operation of the train; the emergency support device (12) is arranged at the bottom of the end beam (1.1), the emergency guide device (10) is arranged at the top of the end beam (1.1), when the superconducting magnet (8), the guide wheel assembly (5) or the support wheel assembly (10) fails, the emergency guide device (10) is used to relieve lateral collision and provide stable support while the emergency support device (12) is used to relieve vertical collision and provide stable support; the longitudinal shock absorber (3) is arranged on the top of the cross beam (1.2), the lateral shock absorber (6) is arranged on the end beam (1.1), the vertical shock absorber (7) is arranged on the outer side of the end beam (1.1), the longitudinal shock absorber (3), the lateral shock absorber (6) and the vertical shock absorber (7) are used to provide damping force for the train, the elastic device (2) is arranged at both ends of the top of the end beam (1.1) for transmitting three-directional loads, and the damping device (9) is arranged outside the superconducting magnet (8) for providing electromagnetic damping.

2. The suspension frame according to claim 1, characterized in that, the frame (1) further includes an equipment mounting plate (1.3) for arranging the support and guide hydraulic device (4), and the equipment mounting plate (1.3) is arranged between the cross beam (1.2) and the cross beam (1.2) or between the end beam (1.1) and the cross beam (1.2).

3. The suspension frame according to claim 2, characterized in that, the equipment mounting plate reserves a mounting interface for a magnetic shielding housing.

4. The suspension frame according to claim 3, characterized in that, the action directions of the reversing valve, throttle valve, proportional valve, check valve and stop valve of the support and guide hydraulic device (4) are parallel to the forward direction X of the train or parallel to the vertical direction Z of the train.

5. The suspension frame according to claim 4, characterized in that, the support wheel assembly (5) is internally provided with a brake unit for providing mechanical braking force when the train lands.

6. The suspension frame according to claim 4, wherein, the elastic device (2) is a conical rubber spring.

7. The suspension frame according to claim 1, wherein, the side beam, the end beam (1.1) and the cross beam (1.2) are connected in a mu-shaped structure.

8. The suspension frame according to claim 7, wherein, the material of the frame (1) is aluminum alloy profiles and plates.

9. The suspension frame according to any one of claims 1-8, wherein, the damping device (9) is a damping coil.

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