Hinged type superconducting electric maglev vehicle suspension frame

Abstract

The invention relates to the technical field of maglev vehicle walking mechanisms, and discloses a hinged type superconducting electric maglev vehicle suspension frame. The suspension frame comprises a hinge traction device, a framework, a supporting and guiding system, a suspension system and an emergency supporting and guiding system, the hinge traction device comprises a front vehicle hinge seat, an elastic node, a rear vehicle hinge seat and a lower traction body, the front vehicle hinge seat is connected with a front vehicle body, and the rear vehicle hinge seat is connected with a rear vehicle body; the front vehicle hinge seat is connected with the rear vehicle hinge seat through an elastic node; the lower traction body is connected with the lower part of the front vehicle hinge seat and the framework; the superconducting magnet and accessories thereof are arranged on the two sides of the framework; the supporting and guiding system comprises a supporting wheel device and a guiding wheel device; the emergency supporting and guiding system comprises an emergency supporting device and an emergency guiding device. The suspension system comprises an elastic unit, a vertical shock absorber, a transverse shock absorber and a longitudinal shock absorber. Therefore, deflection and torsion of the front and rear vehicle bodies can be achieved through the hinged traction device, and meanwhile the front and rear vehicle bodies are dragged to move.

Description

Technical Field

[0001] The present invention relates to the technical field of the running gear of maglev vehicles, and particularly relates to a suspension frame of an articulated superconducting maglev vehicle. Background Art

[0002] According to relevant data, after the speed of existing rail transit vehicles reaches 600 km / h, the ratio of air resistance to the total resistance reaches more than 90% and the vibration is severe. Coupled with factors such as mechanical friction and adhesion coefficient, it seriously restricts the further increase of the speed of rail transit trains. As a new type of transportation system, low-vacuum pipeline maglev transportation operates in a low-pressure pipeline, and the influence of air resistance on it is small; it adopts a superconducting sidewall type suspension and guidance device, which is not restricted by mechanical friction and adhesion coefficient, and has a relatively large suspension and guidance gap, with strong safety; the superconducting long-stator linear motor adopted has a strong traction capacity, enabling the train to reach a higher operating speed, and it is an ideal future means of transportation. The suspension frame is one of the core subsystems of a low-vacuum pipeline maglev train. Magnets, low-speed support devices, traction suspension systems, and quench protection devices are integrally installed on its frame, and it has functions such as load-bearing, traction, suspension, guidance, and braking.

[0003] Southwest Jiaotong University has conducted a lot of research on superconducting maglev and proposed a maglev train that uses the pinning force generated by high-temperature superconducting bulk materials to interact with a permanent magnet track to generate suspension and guidance forces and is driven by a linear motor. The high-temperature superconducting bulk materials are placed in a Dewar and installed on both sides of the bottom of the suspension frame, and the linear motor is installed either in the middle of the bottom of the suspension frame or in other positions. However, this technology is pinning maglev, which uses the pinning effect of non-ideal type-II superconductors for suspension and guidance. Restricted by the level of high-temperature superconducting bulk materials and permanent magnet track magnetic materials, the suspension and guidance capabilities of this system are weak, resulting in limited load-carrying capacity and curve passing ability, unable to meet the requirements of large-capacity load and high-speed operation, and both the cost and maintenance of the permanent magnet track face great difficulties.

[0004] There is also a superconducting maglev train proposed in the prior art, which is equipped with a suspension and guidance device and a linear motor drive device on the basis of a traditional railway bogie. The primary of the linear motor is installed in the middle of the railway track and corresponds to the secondary of the linear motor at the bottom of the middle of the bogie; the suspension and guidance induction plates are installed on both sides of the rail and correspond to the arc mechanisms protruding laterally from the suspension frame to provide suspension and guidance forces. However, in this scheme, the suspension and guidance devices of the bogie are located outside the track, which will cause a large increase in the pipeline diameter, greatly increasing the engineering cost, and the curve passing ability of this guidance method is weak due to geometric limitations. The suspension gap is small during high-speed operation, resulting in high requirements for the accuracy of the track, which is not conducive to engineering and cost savings.

[0005] In the prior art, a suspension frame has also been proposed. It is a suspension frame that adopts a three-stage suspension (including a magnetic track), wheel-type emergency support and guidance, and single-rod traction. Its main feature is that its left and right superconducting magnets are first connected together through a rigid connection device, and then connected to the frame through rubber springs and longitudinal traction rods. However, although the vehicle vibration is reduced and good comfort is achieved by adopting the three-stage suspension, the superconducting magnet with a length of 5 to 6 meters is only installed and connected to the frame and transmits loads through 2 rubber springs at its front and rear ends and 2 longitudinal traction rods on the sides, which requires extremely high strength and stiffness for the outer cryostat of the superconducting magnet, increasing the difficulty of force transmission and heat insulation design from the inner cryostat to the outer cryostat. At the stage when the superconducting magnet technology is not yet fully mature and is still a weak link, this design method is not conducive to achieving the optimal system; moreover, the use of a single traction rod is not conducive to the articulated installation of the suspension frame in the workshop, resulting in an increase in the number of suspension frames in a single train, an increase in the magnetic field influence area, and a weak integrity of the train, affecting economy and safety. Summary of the Invention

[0006] The present invention provides an articulated superconducting maglev vehicle suspension frame, which can solve the technical problems in the prior art.

[0007] The present invention provides an articulated superconducting maglev vehicle suspension frame, wherein the suspension frame includes an articulated traction device, a frame, a support and guidance system, a suspension system, and an emergency support and guidance system.

[0008] The articulated traction device includes a front vehicle articulated seat, an elastic node, a rear vehicle articulated seat, and a lower traction body. The front vehicle articulated seat is connected to the front vehicle body, the rear vehicle articulated seat is connected to the rear vehicle body, the front vehicle articulated seat is connected to the rear vehicle articulated seat through the elastic node, and the lower traction body is connected to the lower part of the front vehicle articulated seat and the frame.

[0009] The superconducting magnet and its accessories are arranged on both sides of the frame. The support and guidance system includes a support wheel device and a guide wheel device. The support wheel device is arranged at the bottom of the frame, and the guide wheel device is arranged on both sides of the frame.

[0010] The emergency support and guidance system includes an emergency support device and an emergency guidance device. The emergency support device is arranged at the bottom of the frame, and the emergency guidance device is arranged on both sides of the frame.

[0011] The suspension system includes an elastic unit, a vertical shock absorber, a lateral shock absorber, and a longitudinal shock absorber. The elastic unit and the vertical shock absorber are arranged at the four corners of the frame. The longitudinal shock absorbers are symmetrically arranged obliquely at the front and rear ends of the frame, and the lateral shock absorbers are symmetrically arranged obliquely in the middle of the frame.

[0012] Preferably, the framework includes at least two end beams, at least two side beams and at least two cross beams, and the at least two end beams, at least two cross beams and at least two side beams are welded to form a square structure.

[0013] Preferably, the framework is made of hollow aluminum alloy profiles and plates.

[0014] Preferably, the front vehicle articulation seat is connected to the front vehicle body by bolts, the rear vehicle articulation seat is connected to the rear vehicle body by bolts, and the lower traction body is connected to the lower part of the front vehicle articulation seat and the framework by bolts.

[0015] Preferably, the elastic node is a rubber node.

[0016] Preferably, the superconducting magnet and its accessories include 1 outer dewar, 2 sets of superconducting coils, 2 inner dewars, 16 sets of adiabatic supports, multiple sets of refrigerant devices and multiple sets of refrigerators.

[0017] Preferably, the emergency support device and the emergency guiding device are both provided with buffer elements.

[0018] Preferably, the elastic unit is a spring.

[0019] Preferably, the spring is a conical rubber spring.

[0020] Through the above technical solutions, the articulated traction device can be arranged between the front and rear vehicle bodies of the superconducting electric maglev vehicle to connect the front and rear two vehicle bodies, and the deflection and torsion of the front and rear vehicle bodies can be realized through the articulated traction device, and at the same time, the front and rear vehicle bodies can be towed and moved. Description of the Drawings

[0021] 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, are used to illustrate the embodiments of the present invention, and are used to explain the principles of the present invention together with the text description. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Shows a schematic structural diagram of a suspension frame of an articulated superconducting electric maglev vehicle according to an embodiment of the present invention;

[0023] Figure 2 Shows a schematic structural diagram of an articulated traction device according to an embodiment of the present invention. Detailed Embodiments

[0024] 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 following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The description of at least one exemplary embodiment below 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.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, 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 combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps 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 convenience 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, the said 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 interpreted 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.

[0027] Figure 1 The structural schematic diagram of a suspension frame of an articulated superconducting electromagnetic levitation vehicle according to an embodiment of the present invention is shown.

[0028] As Figure 1 shown, the embodiment of the present invention provides a suspension frame of an articulated superconducting electromagnetic levitation vehicle, wherein the suspension frame includes an articulated traction device 1, a frame 2, a support and guidance system 3, a suspension system 4, and an emergency support and guidance system 6.

[0029] The articulated traction device 1 includes a front vehicle articulated seat 11, an elastic node 12, a rear vehicle articulated seat 13, and a lower traction body 14. The front vehicle articulated seat 11 is connected to the front vehicle body, the rear vehicle articulated seat 13 is connected to the rear vehicle body, the front vehicle articulated seat 11 is connected to the rear vehicle articulated seat 13 through the elastic node 12, and the lower traction body 14 is connected to the lower part of the front vehicle articulated seat 11 and the frame 2;

[0030] For example, the number of the articulated traction devices can be one set. For each set of articulated traction devices, the number of the front vehicle articulated seats can be at least one, the number of the elastic nodes and the rear vehicle articulated seats can be one respectively, and the number of the lower traction bodies can be two sets. The articulated traction device can transmit the traction force and braking force between the frame and the vehicle body, and realize the deflection and torsion between the front and rear vehicle bodies.

[0031] The superconducting magnet and its accessories 5 are arranged on both sides of the frame 2. The support and guiding system 3 includes a support wheel device and a guiding wheel device. The support wheel device is arranged at the bottom of the frame 2, and the guiding wheel device is arranged on both sides of the frame 2;

[0032] For example, the number of the frames can be one set, the number of the support and guiding systems can be one set, and the number of the superconducting magnets and their accessories can be at least 4 sets. For each set of support and guiding systems, the number of the support wheel devices and the guiding wheel devices can be four sets each, and they are connected to the frame by bolts. Among them, the support wheel device provides the support force and braking force at the low-speed stage, and the guiding wheel device provides the guiding force at the low-speed stage; both the support wheel device and the guiding wheel device have the functions of retracting and extending, and their control systems and hydraulic systems can be installed in the vehicle equipment compartment.

[0033] The emergency support and guiding system 6 includes an emergency support device and an emergency guiding device. The emergency support device is arranged at the bottom of the frame 2, and the emergency guiding device is arranged on both sides of the frame 2;

[0034] For example, the number of the emergency support and guiding systems can be one set. For each set of emergency support and guiding systems, the number of the emergency support devices and the emergency guiding devices can be four sets each, and they are connected to the frame by bolts. And the emergency support devices and the emergency guiding devices protrude from the suspension frame and the train, and there are several gaps in the transverse and vertical directions from the track during normal operation. In case of emergency, the emergency support devices and the emergency guiding devices provide the support and guiding functions.

[0035] The suspension system 4 includes an elastic unit, a vertical shock absorber, a lateral shock absorber, and a longitudinal shock absorber. The elastic unit and the vertical shock absorber are arranged at the four corners of the frame 2. The longitudinal shock absorbers are symmetrically arranged obliquely at the front and rear ends of the frame 2, and the lateral shock absorbers are symmetrically arranged obliquely in the middle of the frame 2.

[0036] For example, the number of suspension systems can be one set. For each set of suspension systems, the number of elastic units and vertical dampers can each be four, and the number of lateral dampers and longitudinal dampers can each be two. The four elastic units are arranged at the four corners of the frame. Besides playing the role of vertical stiffness and vertical damping that traditional elastic units possess, they also have relatively large longitudinal stiffness and lateral stiffness. The two longitudinal dampers are arranged diagonally and symmetrically at the front and rear ends of the frame (i.e., the end beams described below), and adding longitudinal dampers can increase longitudinal damping to reduce longitudinal low-frequency vibrations. The four vertical dampers are arranged at the four corners close to the elastic units to reduce vertical vibrations. The two lateral dampers are arranged diagonally and symmetrically in the middle of the frame (i.e., the cross beam described below) to reduce lateral vibrations.

[0037] Through the above technical solution, the articulated traction device can be arranged between the front and rear car bodies of the superconducting electromagnetic levitation vehicle to connect the front and rear two car bodies, and the deflection and torsion of the front and rear car bodies can be realized through the articulated traction device, and at the same time, the front and rear car bodies can be towed and dragged to move.

[0038] According to an embodiment of the present invention, the frame 2 includes at least two end beams, at least two side beams, and at least two cross beams, and the at least two end beams, at least two cross beams, and at least two side beams are formed into a rectangular structure by welding.

[0039] According to an embodiment of the present invention, the frame 2 is made of hollow aluminum alloy profiles and plates.

[0040] The frame is the main load-bearing structure and equipment installation structure of the suspension frame. Besides using the above materials, other lightweight and high-load-bearing materials can also be used.

[0041] According to an embodiment of the present invention, the front car articulated seat 11 is connected to the front car body by bolts, the rear car articulated seat 13 is connected to the rear car body by bolts, and the lower traction body 14 is connected to the lower part of the front car articulated seat 11 and the frame 2 by bolts.

[0042] For example, the lower traction body can connect two traction tie rods to the frame by bolts, so as to transmit the traction force and braking force to the car body.

[0043] According to an embodiment of the present invention, the elastic node 12 is a rubber node.

[0044] Using a rubber node can provide better deflection and torsion stiffness, so as to realize the deflection of the front and rear car bodies in the up and down and left and right directions during the vehicle operation, and make the front and rear car bodies reach a certain angle.

[0045] According to an embodiment of the present invention, the superconducting magnet and its accessories 5 include 1 outer dewar, 2 sets of superconducting coils, 2 inner dewars, 16 sets of adiabatic supports, multiple sets of refrigerant devices, and multiple sets of refrigerators.

[0046] The superconducting magnet can provide a strong magnetic field, and realize traction and braking under the action of a linear motor on the ground. The magnetic field cuts the ground suspension guiding coil to generate suspension force and guiding force; the superconducting coil can be fixedly connected to the frame side beam through 32 screws, for example. The threaded holes on the inner side of the outer dewar correspond to the internal adiabatic supports one by one, and the generated electromagnetic load is transmitted along the path of superconducting coil - inner dewar - adiabatic support - outer dewar - frame. Its equipment such as refrigerators can also be installed in the vehicle equipment compartment.

[0047] According to an embodiment of the present invention, the emergency support device and the emergency guiding device are both provided with buffer elements.

[0048] Thus, in an emergency, it can provide a buffering effect while providing support and guiding functions.

[0049] According to an embodiment of the present invention, the elastic unit is a spring.

[0050] According to an embodiment of the present invention, the spring is a conical rubber spring.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Without contrary description, 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, so it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0052] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0053] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.

[0054] The above are only the preferred embodiments of the present invention and are not used 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. An articulated superconducting electromagnetic suspension vehicle suspension frame, characterized in that, the suspension frame includes an articulated traction device (1), a frame (2), a support and guiding system (3), a suspension system (4) and an emergency support and guiding system (6), the articulated traction device (1) includes a front vehicle articulated seat (11), an elastic node (12), a rear vehicle articulated seat (13) and a lower traction body (14), the front vehicle articulated seat (11) is connected to the front vehicle body, the rear vehicle articulated seat (13) is connected to the rear vehicle body, the front vehicle articulated seat (11) is connected to the rear vehicle articulated seat (13) through the elastic node (12), and the lower traction body (14) is connected to the lower part of the front vehicle articulated seat (11) and the frame (2); The superconducting magnet and its accessories (5) are arranged on both sides of the frame (2), the support and guiding system (3) includes a support wheel device and a guiding wheel device, the support wheel device is arranged at the bottom of the frame (2), and the guiding wheel device is arranged on both sides of the frame (2); The emergency support and guiding system (6) includes an emergency support device and an emergency guiding device, the emergency support device is arranged at the bottom of the frame (2), and the emergency guiding device is arranged on both sides of the frame (2); The suspension system (4) includes an elastic unit, a vertical shock absorber, a lateral shock absorber and a longitudinal shock absorber, the elastic unit and the vertical shock absorber are arranged at the four corners of the frame (2), the longitudinal shock absorbers are arranged in an inclined and symmetric manner at the front and rear ends of the frame (2), and the lateral shock absorbers are arranged in an inclined and symmetric manner in the middle of the frame (2).

2. The suspension frame according to claim 1, characterized in that, the frame (2) includes at least two end beams, at least two side beams and at least two cross beams, and the at least two end beams, at least two cross beams and at least two side beams are formed into a mesh structure by welding.

3. The suspension frame according to claim 2, characterized in that, the frame (2) is made of hollow aluminum alloy profiles and plates.

4. The suspension frame according to claim 1, characterized in that, the front vehicle articulated seat (11) is connected to the front vehicle body by bolts, the rear vehicle articulated seat (13) is connected to the rear vehicle body by bolts, and the lower traction body (14) is connected to the lower part of the front vehicle articulated seat (11) and the frame (2) by bolts.

5. The suspension frame according to claim 4, characterized in that, the elastic node (12) is a rubber node.

6. The suspension frame according to claim 1, characterized in that, the superconducting magnet and its accessories (5) include 1 outer dewar, 2 sets of superconducting coils, 2 inner dewars, 16 sets of adiabatic supports, multiple sets of refrigerant devices and multiple sets of refrigerators.

7. The suspension frame according to any one of claims 1-6, characterized in that, both the emergency support device and the emergency guiding device are provided with buffer elements.

8. The suspension frame according to any one of claims 1-6, characterized in that, the elastic unit is a spring.

9. The suspension frame according to claim 8, characterized in that, the spring is a conical rubber spring.

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