A line-adaptive high-temperature superconducting magnetic levitation running gear structure

Abstract

The present invention relates to the technical field of magnetic levitation vehicles, and discloses a line-adaptive high-temperature superconducting magnetic levitation running gear structure, comprising: a running gear frame, a traction rod module, a suspension rod module, a damper module, a linear motor mover, and a dewar assembly. The running gear structure of the present invention is provided with a transverse and longitudinal beam connection module between the longitudinal beam and the transverse beam, and a transverse and auxiliary beam connection module between the transverse beam and the auxiliary beam, so that the overall frame of the longitudinal beam, the transverse beam and the auxiliary beam is decoupled to a certain extent while ensuring the rigidity, which not only satisfies that the frame can quickly adapt to line changes during operation, but also ensures the safe operation of the train; a suspension design is adopted between the motor mover and the running gear frame, which alleviates the problem of the frame vibrating with the vibration of the motor caused by the vertical and lateral force coupling between the motor mover and the frame. In addition, a dewar mounting seat that is convenient for disassembly and assembly is designed at the bottom of the magnetic levitation frame, which shortens the installation stroke of the dewar, improves the installation efficiency, and optimizes the installation process.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic levitation vehicles, and in particular to a line-adaptive high-temperature superconducting magnetic levitation running gear structure. Background Art

[0002] The running gear, also known as the maglev frame, is a key component of the maglev train, and has a critical impact on the safety, stability, and comfort of the train. The more mature running gears in the field of maglev trains include the conventional maglev running gear and the low-temperature superconducting high-speed maglev running gear. However, due to the different suspension principles of the high-temperature superconducting maglev train and the conventional maglev train, the structure of the running gear is also essentially different.

[0003] The maglev frame is subject to complex forces, mainly the pinning force (suspension and guidance) of the suspension module, the traction and braking force of the motor, the normal electromagnetic force and lateral correction force of the motor, the eddy current braking force, the mechanical emergency braking force, the suspension force generated by the relative displacement, and other forces. When running on various lines, the relative position relationship between the running gear frame and the line is also relatively complex. Therefore, high requirements are placed on the safety, stability and comfort of the train during operation. At present, the existing high-temperature superconducting standard running gear structure adopts a simplified scheme in design, without considering the influence of line curve changes, magnetic track unevenness and linear motor excitation on it. If the running gear frame is designed to be purely rigid, the running gear has poor adaptability to the line, and the motion decoupling and stiffness supplement between the frame components are insufficient.

[0004] As the traction module of the maglev train, the linear motor mostly adopts the long stator traction and braking design scheme on the high-speed high-temperature superconducting standard train. The linear motor applies traction braking force, normal force and correction force to the maglev frame. The relative position of the motor mover and the stator directly determines the force relationship between the two. The change of air gap not only causes the change of traction force, but also accompanies the lateral and vertical oscillation excitation. During the operation of the levitation train, it is affected by the unevenness of the line. The relative position of the motor mover and the stator changes with the line and the relative position relationship between the two, resulting in changes in the forces in three directions. Since the motor needs to be connected to the maglev frame, the oscillation generated by the motor will be transmitted to the maglev frame. At the same time, due to factors such as unevenness of the line, the vibration excitation of the maglev frame will also be transmitted to the linear motor mover, resulting in changes in the magnetic field force caused by the change of the air gap, further deteriorating the operating performance of the maglev frame. Therefore, reducing the vibration transmitted from the motor mover to the maglev frame is one of the important tasks to ensure the smooth operation of the train.

[0005] Dewar is a key component to achieve the suspension and passive self-stable operation of high-temperature superconducting trains. Dewar is mainly composed of superconducting blocks and the outer vacuum layer structure. Outside the vacuum layer, there are also mechanical connection structures, vacuum interfaces, and cooling medium (liquid nitrogen, etc.) inlets and outlets. In engineering practice, it is necessary to realize the portable disassembly and assembly of Dewar, and facilitate the process operation of the suspension process (including vacuuming, filling cooling medium, achieving superconducting suspension, etc.). Summary of the invention

[0006] The present invention provides a line-adaptive high-temperature superconducting magnetic levitation running gear structure, which solves the defect that the existing high-temperature superconducting magnetic levitation running gear has poor adaptability to line changes.

[0007] A line-adaptive high-temperature superconducting magnetic suspension running gear structure, comprising: a running gear frame, a traction rod module arranged on the running gear frame, a suspension rod module, a damper module, a linear motor mover and a dewar assembly;

[0008] The running gear frame includes longitudinal beams, cross beams and auxiliary beams. The longitudinal beams and cross beams are movably connected through cross-longitudinal beam connection modules, and the cross beams and auxiliary beams are movably connected through cross-auxiliary beam connection modules. Liquid nitrogen pipelines are arranged inside the longitudinal beams.

[0009] The linear motor mover is connected to the crossbeam through a traction rod module and a suspension rod module, and a damper module is arranged between the linear motor mover and the auxiliary beam.

[0010] The beneficial effects of adopting the above technical solution are as follows: the main components of the running gear frame are movably connected to each other, which is convenient for adapting to the curve changes and uneven changes of the magnetic track, thereby increasing the safety, stability and passenger comfort during the operation of the train; a linear motor mover traction and braking design scheme is adopted, and a damper module is set between the mover and the running gear frame, which reduces the impact of the vibration generated during the operation of the linear motor on the frame.

[0011] Furthermore, the longitudinal beam is a box-shaped structure, and an arc-shaped guide groove is provided on the inner side wall thereof, and the extension direction of the guide groove is perpendicular to the long axis direction of the longitudinal beam.

[0012] Furthermore, the above-mentioned transverse and longitudinal beam connection module includes a transverse and longitudinal beam main connection member, a first transverse and longitudinal beam elastic element, a transverse and longitudinal beam secondary connection member, a transverse and longitudinal beam pin shaft and a second transverse and longitudinal beam elastic element. The transverse and longitudinal beam main connection member is clamped on the inside of the longitudinal beam through a cover plate, and the transverse and longitudinal beam main connection member and the transverse and longitudinal beam secondary connection member are both provided with pin seats and are rotatably connected through the transverse and longitudinal beam pin shaft; the first transverse and longitudinal beam elastic element is arranged between the transverse and longitudinal beam main connection member and the transverse and longitudinal beam secondary connection member, and the second transverse and longitudinal beam elastic element is arranged between the transverse and longitudinal beam main connection member and the longitudinal beam; the transverse and longitudinal beam secondary connection member and the transverse beam are connected through a transverse beam gasket.

[0013] Furthermore, the above-mentioned cross-auxiliary beam connection module includes a cross-auxiliary beam connection member, a cross-auxiliary beam elastic element and a cross-auxiliary beam pin shaft. The cross-auxiliary beam connection member is hinged to the cross beam through the cross-auxiliary beam pin shaft, and the cross-auxiliary beam elastic element is arranged between the cross-auxiliary beam connection member and the cross beam; the cross-auxiliary beam connection member is connected to the auxiliary beam through an auxiliary beam gasket.

[0014] Furthermore, the traction rod module includes a rod pin, a rod mounting seat and a traction rod. The rod mounting seat is installed on the linear motor mover. One end of the traction rod is connected to the rod mounting seat through the rod pin, and the other end is also connected to the rod mounting seat on the beam through the rod pin.

[0015] Furthermore, the above-mentioned boom module includes a boom pin, a boom and a boom mounting seat, the boom mounting seat is respectively arranged on the side of the beam and the linear motor mover, and the boom is hinged to the boom mounting seat through the boom pin.

[0016] Furthermore, the damper module comprises a damper mounting seat, a damper pin and a damper rod. The damper mounting seat is respectively arranged on the linear motor mover and the inner side of the auxiliary beam. Both ends of the damper rod are hinged to the damper mounting seat through the damper pin.

[0017] Furthermore, the above-mentioned Dewar assembly includes a pressure plate, a Dewar mounting seat and a Dewar, the Dewar mounting seat is provided with a pin shaft, which is connected to the longitudinal beam through the pin shaft, one side of the Dewar mounting seat is a plane, and the other side is provided with a limiting structure connected to the Dewar, which is connected to the Dewar through the limiting structure and the pressure plate; the Dewar includes a container body for containing liquid nitrogen and a superconducting block arranged inside the container body, the container body is provided with a liquid nitrogen outlet, a liquid nitrogen filling port and a vacuum interface, a pipe joint is installed on the liquid nitrogen filling port, a hose is connected to the pipe joint, the hose is connected to the liquid nitrogen pipeline, and an insulation layer is provided on the outside of the superconducting block.

[0018] The beneficial effects of adopting the above technical solution are as follows: the Dewar assembly is arranged below the longitudinal beam and is connected to the liquid nitrogen pipeline inside the longitudinal beam through a hose, which shortens the installation stroke of the Dewar and improves the installation efficiency.

[0019] Furthermore, a sensor for detecting the volume of liquid nitrogen in the Dewar is provided at the liquid nitrogen outlet, and a switch is provided on the liquid nitrogen filling port, and the switch is communicatively connected with the sensor.

[0020] Furthermore, the first transverse and longitudinal beam elastic element, the second transverse and longitudinal beam elastic element and the transverse auxiliary beam elastic element respectively include a rubber pile, a coil spring, a butterfly spring and a spring leaf.

[0021] The present invention has the following beneficial effects:

[0022] (1) The running gear structure of the present invention is provided with a transverse-longitudinal beam connection module between the longitudinal beam and the transverse beam, and a transverse-auxiliary beam connection module between the transverse beam and the auxiliary beam, so that the overall structure of the longitudinal beam, the transverse beam and the auxiliary beam is decoupled to a certain extent while ensuring a certain rigidity. This not only satisfies the requirement that the running gear structure can quickly adapt to line changes and unevenness during operation, but also ensures the basic requirement of safe operation of the train.

[0023] (2) The suspension design is adopted between the motor rotor and the running gear frame of the running gear structure of the present invention, which alleviates the problem of the frame vibrating with the motor vibration caused by the vertical and lateral force coupling between the motor rotor and the frame, reduces the vibration effect of the motor oscillation on the magnetic levitation frame, and also weakens the influence of the uneven line of the magnetic levitation frame on the motor air gap.

[0024] (3) The running gear structure of the present invention is based on the assembly process and suspension process of the dewar, and a dewar mounting seat that is easy to disassemble and assemble is designed at the bottom of the magnetic levitation frame, which shortens the installation stroke of the dewar, improves the installation efficiency, optimizes the installation process, and meets certain ergonomics. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a main axonometric view of the running gear of the present invention;

[0026] Figure 2 It is a front view schematic diagram of the running part of the present invention;

[0027] Figure 3 It is a side view schematic diagram of the running gear of the present invention;

[0028] Figure 4 It is a top view schematic diagram of the running part of the present invention;

[0029] Figure 5 It is an axonometric view of the running gear of the present invention;

[0030] Figure 6 for Figure 4 Enlarged view of point A in the middle;

[0031] Figure 7 for Figure 4 Enlarged view of point B in the middle;

[0032] Figure 8 It is a structural schematic diagram of the main connecting member of the transverse and longitudinal beams in the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of the transverse and longitudinal beam auxiliary connecting member and the transverse auxiliary beam connecting member in the present invention;

[0034] Fig.10 It is a schematic diagram of the adaptability of the running gear of the present invention to the curved magnetic track during longitudinal movement;

[0035] Fig.11 It is a schematic diagram of the running gear of the present invention passing through tracks with different heights on the left and right sides;

[0036] Fig.12 It is a schematic diagram of the suspension mover of the linear motor in the present invention;

[0037] Fig.13 This is a schematic diagram of the outer installation structure of the Dewar assembly in the present invention;

[0038] Fig.14 This is a schematic diagram of the inner installation structure of the Dewar assembly in the present invention;

[0039] Fig.15 It is a schematic diagram of the structure of the Dewar in the present invention;

[0040] Fig.16 It is a front view schematic diagram of the Dewar in the present invention;

[0041] Fig.17 It is a structural schematic diagram of the Dewar mounting seat in the present invention;

[0042] Fig.18 The figure is a flow chart of the connection between the Dewar and the Dewar mounting seat in the present invention.

[0043] In the figure: 101-longitudinal beam; 102-cross beam; 103-auxiliary beam; 104-cross and longitudinal beam connection module; 1041-cross and longitudinal beam main connection piece; 1042-first cross and longitudinal beam elastic element; 1043-cross and longitudinal beam auxiliary connection piece; 1044-cross and longitudinal beam pin; 1045-second cross and longitudinal beam elastic element; 1046-cover plate; 105-cross auxiliary beam connection module; 1051-cross auxiliary beam connection piece; 1052-cross auxiliary beam elastic element; 1053-cross auxiliary beam pin; 106-cross beam gasket; 107-auxiliary beam gasket; 201-traction rod module; 2011-tie rod pin; 20 12-tie rod mounting seat; 2013-traction tie rod; 202-suspender rod module; 2021-suspender rod; 2022-suspender rod pin; 2023-suspender rod mounting seat; 203-damper module; 2031-damper mounting seat; 2032-damper pin; 2033-damper rod; 204-linear motor mover; 301-pressure plate; 302-Dewar mounting seat; 303-liquid nitrogen pipeline; 304-pipe joint; 305-Dewar; 3051-liquid nitrogen outlet; 3052-liquid nitrogen filling port; 3053-dovetail groove; 3054-vacuum extraction interface; 306-hose. DETAILED DESCRIPTION

[0044] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0045] refer to Figures 1 to 5The present invention provides a line-adaptive high-temperature superconducting magnetic levitation running gear structure, comprising: a running gear frame, a traction rod module 201 arranged on the running gear frame, a suspension rod module 202, a damper module 203, a linear motor mover 204 and a dewar assembly; the linear motor mover 204 is connected to the crossbeam 102 through the traction rod module 201 and the suspension rod module 202, and a damper module 203 is arranged between the linear motor mover 204 and the auxiliary beam 103.

[0046] The running gear frame includes two parallel longitudinal beams 101, two parallel transverse beams 102 and two parallel auxiliary beams 103. The longitudinal beam 101 is parallel to the auxiliary beam 103, and the auxiliary beam 103 is arranged on the inner side of the longitudinal beam 101; the transverse beam 102 is perpendicular to the longitudinal beam 101 and is movably connected through a transverse and longitudinal beam connecting module 104, so that the two longitudinal beams 101 can be decoupled and move relative to each other in their axial and normal directions; the auxiliary beam 103 is perpendicular to the transverse beam 102 and the auxiliary beam 103 is located on the inner side of the two transverse beams 102 and is movably connected through a transverse and auxiliary beam connecting module 105, so that the auxiliary beam 103 and the transverse beam 102 can realize relative rotation on the horizontal plane, so as to improve the train's adaptability to curved magnetic tracks.

[0047] The longitudinal beam 101 is a long columnar box-shaped structure, and an arc-shaped guide groove is provided on its inner wall. The extension direction of the guide groove is perpendicular to the long axis direction of the longitudinal beam 101. A mounting groove for a liquid nitrogen pipe is provided on the lower inner wall. The mounting groove extends axially along the longitudinal beam 101 and a liquid nitrogen pipeline 303 is fixed inside the mounting groove for conveying liquid nitrogen. A pin hole for connecting the Dewar assembly is provided on the outer side of the bottom wall of the longitudinal beam 101.

[0048] refer to Figure 5 , Figure 6 , Figure 8 and Fig. 9The transverse and longitudinal beam connection module 104 includes a transverse and longitudinal beam main connection member 1041, a first transverse and longitudinal beam elastic element 1042, a transverse and longitudinal beam secondary connection member 1043, a transverse and longitudinal beam pin shaft 1044 and a second transverse and longitudinal beam elastic element 1045; the transverse and longitudinal beam main connection member 1041 is composed of a flat plate, a box body with openings on both sides and two pin seats with holes, the box body and the pin seats are fixed on the two side surfaces of the flat plate, and the two pin seats are symmetrically arranged on the side surfaces of the flat plate; the transverse and longitudinal beam secondary connection member 1043 is composed of a flat plate with threaded holes and a pin seat, the pin seat is fixed in the middle of the flat plate, and the threaded holes are distributed near the four corners of the flat plate. When the longitudinal beam 101 and the cross beam 102 are connected by the transverse and longitudinal beam connection module 104, the pin seats of the transverse and longitudinal beam secondary connecting parts 1043 are arranged opposite to the two pin seats on the transverse and longitudinal beam main connecting parts 1041 and the pin holes of the three pin seats are located on the same straight line, and a rotation connection is formed by a transverse and longitudinal beam pin shaft 1044; a first transverse and longitudinal beam elastic element 1042 is arranged on the opposite sides of the transverse and longitudinal beam main connecting parts 1041 and the transverse and longitudinal beam secondary connecting parts 1043, so that the longitudinal beam 101 and the cross beam 102 can rotate relative to each other on the horizontal plane. When passing through a curved magnetic track, the positions of the longitudinal beams 101 on the left and right sides are relatively moved to adapt to the cornering ability. At the same time, the pin shaft connection method also ensures the connection stiffness of the longitudinal beam 101 and the cross beam 102. The box on the main connecting member 1041 of the transverse and longitudinal beam is located in the hollow interior of the longitudinal beam 101 and is limited by a cover plate 1046. The cover plate 1046 is fixed on the side of the box opening and its size is larger than the size of the box. The upper and lower sides of the main connecting member 1041 of the transverse and longitudinal beam are respectively provided with second transverse and longitudinal beam elastic elements 1045, so that the second transverse and longitudinal beam elastic elements 1045 can slide up and down along the guide groove, so that the longitudinal beam 101 and the transverse beam 102 can move relative to each other in the normal direction of the magnetic track. When the running part passes through the magnetic track with height changes, the second transverse and longitudinal beam elastic elements 1045 are used to reduce the impact of the vibration of the longitudinal beam 101 on other components. The flat plate of the secondary connecting member 1043 of the transverse and longitudinal beam is fixedly connected to the transverse beam 102 through the transverse beam gasket 106, the transverse beam gasket 106 is threadedly connected to the flat plate, and the transverse beam gasket 106 is welded to the end face of the transverse beam 102.

[0049] refer to Figure 5 , Figure 7 and Fig. 9The cross-auxiliary beam connection module 105 includes a cross-auxiliary beam connector 1051, a cross-auxiliary beam elastic element 1052 and a cross-auxiliary beam pin 1053. The structure of the cross-auxiliary beam connector 1051 is the same as that of the transverse and longitudinal beam auxiliary connector 1043, and also includes a flat plate with threaded holes, on which a pin seat with holes is fixed; cross-auxiliary beam connectors 1051 are fixed on the outer wall of the crossbeam 102 and the end face of the auxiliary beam 103, and the pin seats of the two cross-auxiliary beam connectors 1051 are arranged opposite to each other and are rotatably connected by a cross-auxiliary beam pin 1053. The cross-auxiliary beam elastic element 1052 is fixed on the flat plates of the two cross-auxiliary beam connectors 1051, so that the auxiliary beam 103 and the crossbeam 102 can move relative to each other in the horizontal plane, thereby improving the coordination of the frame when adapting to line changes. The transverse auxiliary beam connector 1051 is connected to the auxiliary beam 103 via the auxiliary beam gasket 107 . The auxiliary beam gasket 107 is threadedly connected to the flat plate. The other side of the auxiliary beam gasket 107 is welded to the end face of the auxiliary beam 103 .

[0050] refer to Fig.10 and Fig.11 The rotation centers of the pins on the transverse auxiliary beam connecting member 1051 and the transverse and longitudinal beam main connecting member 1041 are all located on the same straight line. The longitudinal beam 101, transverse beam 102, and auxiliary beam 103 of the running unit can form a parallelogram structure. The longitudinal beam 101 and the transverse beam 102 can move axially around the transverse and longitudinal beam pins 1044, and the transverse beam 102 and the auxiliary beam 103 can move axially around the transverse auxiliary beam pin 1053 to ensure the longitudinal movement of the running unit.

[0051] The first transverse and longitudinal beam elastic element 1042 , the second transverse and longitudinal beam elastic element 1045 and the transverse auxiliary beam elastic element 1052 can provide linear motion stiffness elements such as rubber piles, coil springs, butterfly springs, spring leaves, etc., to help the components connected thereto to reset and complete rotation.

[0052] refer to Fig.12 The traction rod module 201 includes a rod pin 2011, a rod mounting seat 2012 and a traction rod 2013. The rod mounting seat 2012 is a pin seat, on which a rod pin 2011 is provided. The four rod mounting seats 2012 are symmetrically installed and fixed at the middle position of the upper surface of the linear motor mover 204 and the middle position of the outer side of the beam 102. Both ends of the traction rod 2013 are connected with cylindrical pin rings, which are matched with the pin seats. The linear motor mover 204 is suspended under the beam 102 through the rod mounting seat 2012 and the traction rod 2013, thereby providing traction and braking force for the train while ensuring the longitudinal stiffness of the linear motor.

[0053] The boom module 202 includes a boom 2021, a boom pin 2022 and a boom mounting seat 2023. The eight boom mounting seats 2023 are respectively fixed on the outer side surface of the beam 102 and the linear motor mover 204. The boom mounting seats 2023 on the same side are symmetrically arranged with the traction rod 2013 as the central axis. The boom mounting seat 2023 on the beam 102 and the boom mounting seat 2023 on the linear motor mover 204 are arranged perpendicular to each other, that is, the axis lines of the holes at both ends of the boom mounting seat 2023 are perpendicular to each other; the boom mounting seat 2023 is a pin seat, and a boom pin 2022 is provided on the pin seat. The rubber rings at both ends of the boom 2021 are sleeved on the boom pin 2022 and are perpendicular to the linear motor mover 204. The linear motor mover 204 is decoupled from the running gear structure as a whole through the boom 2021, and at the same time, the boom 2021 bears the vertical force of the linear motor mover 204.

[0054] The damper module 203 includes a damper mounting seat 2031, a damper pin 2032 and a damper rod 2033. The damper mounting seat 2031 is provided with a damper pin 2032. Four damper mounting seats 2031 are installed on the inner side of the auxiliary beam 103. The four damper mounting seats 2031 are installed on the upper surface of the linear motor mover 204, and are symmetrically arranged with the traction rod 2013 as the central axis; rubber rings are also connected to both ends of the damper rod 2033, and the rubber rings are rotatably connected to the damper pin 2032, so that the damper rod 2033 can rotate around the damper pin 2032, and the damper rod 2033 forms an angle of 45 degrees with the horizontal plane to reduce the lateral and vertical vibration influence of the linear motor mover 204 on the walking part structure, thereby improving the safety and stability of the train operation. The damper module 203 may also be selected from any one of a hydraulic damping rod, an electrorheological damper, a magnetorheological damper, a friction damper, a variable damping gas spring, and an eddy current variable damper.

[0055] refer to Figures 13 to 18 The Dewar assembly includes a pressing plate 301, a Dewar mounting seat 302 and a Dewar 305. A dovetail groove 3053 is provided on the top plate of the Dewar 305. A pin hole is provided on the Dewar mounting seat 302. The size of the pin hole is consistent with the size of the pin hole on the bottom wall of the longitudinal beam 101. The Dewar mounting seat 302 is fixed to the bottom of the longitudinal beam 101 by a pin to limit the movement of the Dewar mounting seat 302. The upper side surface of the Dewar mounting seat 302 is a plane, and a limiting structure is provided on the lower side surface. The limiting structure is adapted to the dovetail groove 3053, so that the Dewar 305 is connected to the Dewar mounting seat 302. The dovetail groove 3053 structure shortens the installation stroke of the Dewar 305 and improves the efficiency of installation and liquid nitrogen transmission. After the Dewar 305 is connected to the Dewar mounting seat 302, the two pressing plates 301 are used to limit the Dewar 305 to ensure that the Dewar 305 is fixed on the Dewar mounting seat 302 and will not move.

[0056] The Dewar mounting seat 302 only limits the Dewar 305 through the dovetail groove 3053, but it can still move in a horizontal direction, which is convenient for the installation of the Dewar 305. For the horizontal direction, it is limited on one side by a first pressure plate, and the first pressure plate is fixedly connected to the Dewar mounting seat 302 but not connected to the Dewar 305, and only limits the displacement of the Dewar 305 in the horizontal direction; it is also limited on the other side by a second pressure plate, but the second pressure plate is fixedly connected to the Dewar mounting seat 302 and the Dewar 305 at the same time. When the Dewar 305 needs to be removed for inspection, the Dewar 305 is taken out after the first pressure plate is removed, and the second pressure plate continues to maintain a fixed connection with the Dewar mounting seat 302. The first pressure plate and the second pressure plate are the same, both represent the pressure plate 301, and only represent different installation positions and connection methods.

[0057] Dewar 305 includes a container body and a superconducting block material arranged inside the body. The container body is a box-shaped structure for containing liquid nitrogen. The liquid nitrogen is used to cool the superconducting block material. An insulating layer is provided between the superconducting block material and the container body. The insulating layer is arranged on the periphery of the superconducting block material. Before filling the liquid nitrogen into the container body, the outside of the insulating layer of the container body is first evacuated through the vacuum interface 3054 to prevent external heat from being transferred to the superconducting block material. The superconducting block material is always wrapped in liquid nitrogen. The vacuum interface 3054 is arranged on the side wall of the container body.

[0058] The installation process of Dewar 305 is as follows: the pressure plate 301 on the inner side of Dewar mounting seat 302 is fastened to Dewar mounting seat 302, the dovetail groove 3053 on the inner side of Dewar 305 is aligned with the center of Dewar mounting seat 302, Dewar 305 is pressed against Dewar mounting seat 302, and Dewar 305 is pushed in along the dovetail groove 3053 on Dewar mounting seat 302 from the outside of Dewar 305 until it contacts the pressure plate 301 on the inner side of Dewar mounting seat 302, and then the pressure plate 301 on the outer side of Dewar mounting seat 302 is connected to Dewar mounting seat 302, and the inner side and outer side here are the inner side and outer side of the magnetic track relative to the longitudinal beam 101.

[0059] A liquid nitrogen outlet 3051 and a liquid nitrogen filling port 3052 are provided on the top plate of the dewar 305. The liquid nitrogen outlet 3051 and the liquid nitrogen filling port 3052 are located between two dovetail groove 3053 structures. A pipe joint 304 is installed on the liquid nitrogen outlet 3051 and the liquid nitrogen filling port 3052. A hose 306 is connected to the pipe joint 304. The hose 306 of the liquid nitrogen filling port 3052 is connected to the liquid nitrogen pipeline 303. Liquid nitrogen is filled into the dewar 305 to provide suspension and guiding force for the running gear. An insulation layer is provided on the outside of the liquid nitrogen pipeline 303. The liquid nitrogen outlet 3051 is used to discharge the gasified nitrogen. After the superconducting block is cooled to the superconducting state, the dewar 305 descends from the field cooling height to the suspension height along with the running gear frame to form pinned suspension.

[0060] A sensor for detecting the volume of liquid nitrogen in the dewar 305 is provided at the liquid nitrogen outlet 3051. The sensor here is an ultrasonic liquid level sensor. The sensor is an existing technical device and its working principle is not repeated here. An electromagnetic switch is provided on the liquid nitrogen filling port 3052. The electromagnetic switch is connected to the ultrasonic liquid level sensor for communication. When the ultrasonic liquid level sensor detects that the volume of liquid nitrogen in the dewar 305 has dropped to a certain extent, it transmits information to the electromagnetic switch and instructs the electromagnetic switch to open, so that the liquid nitrogen in the liquid nitrogen pipeline 303 is replenished into the dewar 305, ensuring that the entire running gear structure can always be suspended. The electromagnetic switch and sensor are provided to ensure the independence of replenishing liquid nitrogen between multiple dewars 305. When a single dewar 305 is filled with liquid nitrogen but other dewars 305 are not yet filled, the filling port is closed, which solves the waste problem caused by overfilling of the dewar, improves the efficiency of liquid nitrogen filling, and makes it more convenient to evacuate the dewar 305, and also facilitates the disassembly and maintenance of the dewar.

[0061] The high-temperature superconducting magnetic levitation running gear structure of the present invention improves the running gear's ability to negotiate curved roads while ensuring safe operation of the train. At the same time, it has better applicability to lines with highly varying heights and reduces the impact of the linear motor's air gap and oscillation on the running gear frame.

[0062] The above description is only a preferred embodiment of the present invention, which does not represent all possible forms of the present invention, and the protection scope of the present invention is not limited to such special statements and embodiments. According to the technical enlightenment disclosed by the present invention, various other modifications and improvements that do not deviate from the essence of the present invention are made, and these modifications and improvements are still within the protection scope of the present invention.

Claims

1. A line-adaptive high-temperature superconducting magnetic suspension running gear structure, characterized in that: include: A running gear frame, a traction rod module (201) arranged on the running gear frame, a suspension rod module (202), a damper module (203), a linear motor mover (204), and a dewar assembly; The running gear frame comprises a longitudinal beam (101), a transverse beam (102) and an auxiliary beam (103); the longitudinal beam (101) and the transverse beam (102) are movably connected via a transverse and longitudinal beam connecting module (104); the transverse beam (102) and the auxiliary beam (103) are movably connected via a transverse and auxiliary beam connecting module (105); and a liquid nitrogen pipeline (303) is provided inside the longitudinal beam (101); The linear motor mover (204) is connected to the crossbeam (102) via the traction rod module (201) and the suspension rod module (202), and the damper module (203) is provided between the linear motor mover (204) and the auxiliary beam (103); The transverse and longitudinal beam connection module (104) comprises a transverse and longitudinal beam main connection member (1041), a first transverse and longitudinal beam elastic element (1042), a transverse and longitudinal beam secondary connection member (1043), a transverse and longitudinal beam pin shaft (1044) and a second transverse and longitudinal beam elastic element (1045); the transverse and longitudinal beam main connection member (1041) is clamped inside the longitudinal beam (101) through a cover plate (1046); and both the transverse and longitudinal beam main connection member (1041) and the transverse and longitudinal beam secondary connection member (1043) are A pin seat is provided and is rotatably connected via a transverse and longitudinal beam pin shaft (1044); the first transverse and longitudinal beam elastic element (1042) is arranged between a transverse and longitudinal beam main connecting member (1041) and a transverse and longitudinal beam secondary connecting member (1043); the second transverse and longitudinal beam elastic element (1045) is arranged between the transverse and longitudinal beam main connecting member (1041) and the longitudinal beam (101); the transverse and longitudinal beam secondary connecting member (1043) and the transverse beam (102) are connected via a transverse beam gasket (106); The cross-auxiliary beam connection module (105) comprises a cross-auxiliary beam connection member (1051), a cross-auxiliary beam elastic element (1052) and a cross-auxiliary beam pin shaft (1053); the cross-auxiliary beam connection member (1051) is hinged to the cross-auxiliary beam (102) via the cross-auxiliary beam pin shaft (1053); the cross-auxiliary beam elastic element (1052) is arranged between the cross-auxiliary beam connection member (1051) and the cross-auxiliary beam (102); the cross-auxiliary beam connection member (1051) is connected to the auxiliary beam (103) via an auxiliary beam gasket (107).

2. The line-adaptive high-temperature superconducting magnetic suspension running gear structure according to claim 1 is characterized in that: The longitudinal beam (101) is a box-shaped structure, and an arc-shaped guide groove is provided on its inner side wall. The extension direction of the guide groove is perpendicular to the long axis direction of the longitudinal beam (101).

3. The line-adaptive high-temperature superconducting magnetic suspension running gear structure according to claim 1 is characterized in that: The traction rod module (201) comprises a rod pin shaft (2011), a rod mounting seat (2012) and a traction rod (2013); the rod mounting seat (2012) is mounted on the linear motor mover (204); one end of the traction rod (2013) is connected to the rod mounting seat (2012) via the rod pin shaft (2011), and the other end is also connected to the rod mounting seat (2012) on the crossbeam (102) via the rod pin shaft (2011).

4. The line-adaptive high-temperature superconducting magnetic suspension running gear structure according to claim 1 is characterized in that: The suspension rod module (202) comprises a suspension rod pin shaft (2022), a suspension rod (2021) and a suspension rod mounting seat (2023); the suspension rod mounting seat (2023) is respectively arranged on the side of the beam (102) and the linear motor mover (204); the suspension rod (2021) is hinged to the suspension rod mounting seat (2023) via the suspension rod pin shaft (2022).

5. The line-adaptive high-temperature superconducting magnetic suspension running gear structure according to claim 1 is characterized in that: The damper module (203) comprises a damper mounting seat (2031), a damper pin shaft (2032) and a damper rod (2033); the damper mounting seat (2031) is respectively arranged on the linear motor mover (204) and the inner side surface of the auxiliary beam (103); and the two ends of the damper rod (2033) are hinged to the damper mounting seat (2031) through the damper pin shaft (2032).

6. The line-adaptive high-temperature superconducting magnetic suspension running gear structure according to claim 1, characterized in that: The dewar assembly comprises a pressure plate (301), a dewar mounting seat (302) and a dewar (305); the dewar mounting seat (302) is provided with a pin shaft and is connected to the longitudinal beam (101) via the pin shaft; one side of the dewar mounting seat (302) is a plane, and the other side is provided with a limiting structure connected to the dewar (305), and is connected to the dewar (305) via the limiting structure and the pressure plate (301); the dewar (305) comprises The invention comprises a container body for containing liquid nitrogen and a superconducting block material arranged inside the container body, wherein the container body is provided with a liquid nitrogen gas outlet (3051), a liquid nitrogen filling port (3052) and a vacuum interface (3054), a pipe joint (304) is installed on the liquid nitrogen filling port (3052), a hose (306) is connected to the pipe joint (304), and the hose (306) is connected to the liquid nitrogen pipeline (303), and a heat insulation layer is provided on the outer side of the superconducting block material.

7. The line-adaptive high-temperature superconducting magnetic suspension running gear structure according to claim 6 is characterized in that: A sensor for detecting the volume of liquid nitrogen in the Dewar (305) is provided at the liquid nitrogen outlet (3051), and a switch is provided on the liquid nitrogen filling port (3052), wherein the switch is in communication connection with the sensor.

8. The line-adaptive high-temperature superconducting magnetic suspension running gear structure according to claim 1, characterized in that: The first transverse and longitudinal beam elastic element (1042), the second transverse and longitudinal beam elastic element (1045) and the transverse auxiliary beam elastic element (1052) respectively include a rubber pile, a coil spring, a butterfly spring and a spring leaf.

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