Superconducting electric suspension frame capable of achieving self-adaption curve linear steering

Abstract

The invention discloses a superconducting electric suspension frame self-adaptive to curve linear steering. The superconducting electric suspension frame comprises two suspension frame units and a central folding mechanism connected between the two suspension frame units. Each suspension frame unit comprises two oppositely-arranged magnet axle boxes, superconducting magnets arranged in the magnet axle boxes, refrigerating containers of the superconducting magnets, a framework arranged between the two magnet axle boxes and connected with the central folding mechanism in a matched mode, and a forced guiding mechanism arranged below the magnet axle boxes and in sliding fit with the central folding mechanism. The magnet shaft box and the framework can rotate, a supporting wheel assembly is arranged at the lower end of the framework, and a guide wheel assembly is arranged at the upper end of the framework. The structure is reliable, and through the synergistic effect of the forced guiding device and the central folding mechanism, the trafficability of the superconducting electric magnetic levitation vehicle on a plane curve and a vertical curve is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of rail transportation, and in particular to a superconducting electric suspension frame capable of adaptive curve linear steering. Background Art

[0002] The superconducting electrodynamic suspension (EDS) train is currently the only mode of transportation that has been tested at a speed of 600 kilometers per hour, and is also an ideal transportation system for the development of high-speed or ultra-high-speed rail transportation. Japan has developed a superconducting electrodynamic EDS suspension system based on sidewall electrodynamic suspension, which can maintain a suspension gap of about 100mm and has the characteristics of self-stability and high safety. The superconducting electrodynamic suspension train has a design speed of 600km / h and faces many technical difficulties in high-speed domains, high loads, and complex excitation conditions.

[0003] The curve passing ability of the train is strongly related to the longitudinal length of the suspension frame. The longitudinal length of the suspension frame of the conventional maglev train is about 3m, which can adapt to curves with smaller radius. However, the longitudinal length of the suspension frame of the existing superconducting electric suspension train is close to 6m, and the curve passing ability of the train is greatly limited. When the train passes through a plane curve or a vertical curve, the posture of the suspension frame needs to fit the curve as closely as possible, and the long longitudinal suspension frame undoubtedly increases the limit of the curve radius and increases the risk of hitting the track and other unsafe factors. During operation, superconducting magnets are susceptible to complex excitations and produce problems of uneven electromagnetic force, and the resulting eccentric load and vibration problems have yet to be solved. When the suspension frame carries two different front and rear car bodies, the vibrations of the front and rear car bodies are easily transmitted to each other through the suspension frame, and the vibration coupling of the front and rear car bodies deteriorates the driving stability and riding comfort. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a superconducting electric suspension frame with adaptive curve linear steering.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a superconducting electric suspension frame with adaptive curve linear steering, comprising two suspension frame units and a central folding mechanism connected between the two suspension frame units; The suspension frame unit includes two magnet axle boxes arranged opposite to each other, a superconducting magnet and a refrigeration container arranged in the magnet axle boxes, a frame arranged between the two magnet axle boxes and connected to the central folding mechanism, and a forced guide mechanism arranged below the magnet axle boxes and slidably matched with the central folding mechanism. The magnet axle boxes and the frame can rotate, a support wheel assembly is arranged at the lower end of the frame, and a guide wheel assembly is arranged at the upper end of the frame.

[0006] Furthermore, the forced guide mechanism includes a forced guide frame which is arranged below the magnet axle box and has a deformable structure, and a slider which is arranged at the end of the forced guide frame, and the slider slides along the rod of the central folding mechanism.

[0007] Furthermore, the forced guide frame includes a central rod and support rods movably arranged at both ends of the central rod, the support rods are movably connected below the magnet axle box, and the slider is movably arranged at the end of the central rod near the central folding mechanism.

[0008] Furthermore, two longitudinal springs, four vertical springs and four transverse springs are respectively arranged inside the magnet axle box.

[0009] Further, each superconducting magnet is provided with two superconducting coils.

[0010] Furthermore, an air spring and a height adjustment rod thereof are arranged on the frame.

[0011] Furthermore, vertical vibration dampers and lateral vibration dampers are respectively arranged on the frame.

[0012] Furthermore, an emergency buffer device is also provided at the bottom of the magnet axle box. Furthermore, a traction device and a transverse stopper are respectively provided on the upper surface of the frame, and the transverse stoppers are respectively arranged on both sides of the traction device.

[0013] The present invention has the following beneficial effects: the superconducting electric suspension frame with adaptive curve linear steering provided by the present invention has a reliable structure, and significantly improves the passing ability of the superconducting electric magnetic suspension vehicle on plane curves and vertical curves through the synergistic effect of the forced guide device and the central folding mechanism. When the train passes through a plane curve, the inertial force is transferred to the magnetic axle box through the forced guide mechanism, forcing the axle box to present a high curve passing ability posture, so that it can better adapt to the curved track, and improve the passing ability and stability of the train on the plane curve. The central folding mechanism can achieve the relative decoupling of the front and rear frames, and improve the passing ability of the train through the vertical curve. At the same time, other components such as air springs, shock absorbers and guide wheel assemblies further enhance the stability and comfort of the train. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the suspension frame structure of the present invention; Figure 2 It is a front view of the suspension frame of the present invention; Figure 3 A top view of the suspension frame of the present invention; Figure 4 A side view of the suspension frame of the present invention; Figure 5 It is a schematic diagram of the magnet axle box structure of the present invention; Figure 6 It is a schematic diagram of the suspension frame posture when passing through a plane curve; Figure 7 This is a schematic diagram of the suspension frame's posture when passing through a vertical curve; Figures 1 to 7 The reference numerals shown in the figure represent respectively: 1-guide wheel assembly, 2-air spring and height adjustment rod thereof, 3-lateral shock absorber, 4-central folding mechanism, 5-frame, 6-vertical shock absorber, 7-support wheel assembly, 8-traction device, 9-emergency buffer device, 10-superconducting magnet and refrigeration container thereof, 11-magnet axle box, 12-forced guide device, 120-forced guide frame, 121-slider, 1201-center rod, 1202-support rod, 13-lateral stop. DETAILED DESCRIPTION

[0015] 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.

[0016] like Figures 1 to 5 As shown, a superconducting electric suspension frame with adaptive curve linear steering includes two suspension frame units and a central folding mechanism 4 connected between the two suspension frame units; The suspension frame unit includes two magnet axle boxes 11 arranged opposite to each other, a superconducting magnet 10 arranged in the magnet axle boxes 11, a refrigeration container, a frame 5 arranged between the two magnet axle boxes 11 and connected with the central folding mechanism 4, and a forced guide mechanism 12 arranged below the magnet axle boxes 11 and slidingly matched with the central folding mechanism 4. The magnet axle boxes 11 and the frame 5 can rotate. The lower end of the frame 5 is provided with a support wheel assembly 7, and the upper end of the frame 5 is provided with a guide wheel assembly 1. The support wheel assembly 7 and the guide wheel assembly 1 are extended and retracted by oil hydraulic pressure or air pressure control, so as to provide sufficient support and guide force when the train is running at a low speed.

[0017] Regarding the superconducting magnet 10 and the refrigeration container, the superconducting magnet is the core component of the maglev train, responsible for generating a strong magnetic field to achieve suspension and propulsion. Each superconducting magnet is provided with two superconducting coils. In this scheme, there are a total of 8 superconducting coils. The refrigeration container is used to maintain the low temperature environment of the superconducting magnet to ensure its normal operation. The 8 superconducting coils share 1 to 4 refrigeration systems.

[0018] Each suspension frame unit can perform yaw motion around the frame 5, and the suspension frame posture is more in line with the plane curve line shape, solving the problem of low curve passing ability caused by the longitudinal length of the suspension frame. The central folding mechanism 4 can realize the relative rotation of the front and rear suspension frames along the transverse axis. When the train passes through a vertical curve, the electromagnetic force received by the front and rear superconducting magnets changes, driving the front and rear frames 5 of the suspension frame to rotate to a controllable degree, so as to improve the vertical curve passing ability of the superconducting electric suspension train. In addition, compared with the traditional front and rear end fixed connection form of the suspension frame, the central folding mechanism 4 reduces the vibration coupling degree of the front and rear end frames 5, and improves the coupling vibration problem of the front and rear end train body.

[0019] The forced guide mechanism 12 includes a forced guide frame 120 which is arranged below the magnet axle box 11 and has a deformable structure, and a slider 121 which is arranged at the end of the forced guide frame 120. The slider 121 slides along the rod of the central folding mechanism 4. The forced guide frame 120 is a parallelogram structure as a whole. The slider 121 can slide laterally along the rod of the central folding mechanism 4. When the train passes through a plane curve, the slider 121 is forced to slide in the direction opposite to the target direction of the train under the influence of inertia, that is, when the train turns left or right, the slider 121 slides to the right and left sides; the slider 121 drives the forced guide frame 120 of the parallelogram structure to change, thereby controlling the position and posture of the 8 superconducting coils. The forced guide mechanism 12 can help the axle box to perform adaptive posture changes, so that the posture of the suspension frame is more in line with the linear shape of the plane curve. The 8 superconducting coils are connected by four parallelogram structures, and the nodes are evenly stressed. Therefore, the mechanism also has the function of uniformly transmitting the lateral force fluctuation of one superconducting magnet to all superconducting magnets.

[0020] Specifically, the forced guide frame 120 includes a central rod 1201 and support rods 1202 movably arranged at both ends of the central rod 1201 , the support rods 1202 are movably connected below the magnet shaft box 11 , and the slider 121 is movably arranged at the end of the central rod 1201 close to the central folding mechanism 4 .

[0021] Two longitudinal springs, four vertical springs, four transverse springs, suspension and limit devices are respectively arranged inside the magnet axle box 11. The superconducting magnet can perform longitudinal, vertical, transverse, pitch, yaw and roll movements inside the magnet axle box 11. By adjusting the suspension and limit devices inside the axle box, the superconducting coil can be allowed to perform relatively controllable longitudinal, vertical, transverse and rotational movements therein, which helps the superconducting magnet adapt to and adjust the electromagnetic force fluctuations generated by the suspension guide, filter the high-frequency vibrations of the superconducting magnet, and improve the ride comfort of the vehicle body.

[0022] like Figure 6As shown, the yaw directions of the two superconducting magnets on the left and right at the same longitudinal position are the same, and the yaw directions of the superconducting magnets at the front and rear positions on the same side are opposite. This helps the suspension frame to fit the plane curve line shape and improve the plane curve passing ability of the train. The change of the suspension frame's posture is adaptive, and this phenomenon is achieved with the assistance of a forced guide device. The slider 121 in the forced guide mechanism 12 is set with a reasonable mass and is connected in series to the rod of the central folding knot mechanism. When the train passes through a plane curve, the slider 121 is thrown to the end opposite to the turning direction of the train due to the action of the inertial force. The slider 121 is heavier than the rod, and drives the rod to complete the following. Figure 7 The forced guide device shown is deformed, thereby driving the attitude adaptation of the superconducting magnet.

[0023] like Figure 7 As shown, when passing through the vertical curve, the height of the front ground coil increases, causing the front superconducting magnet to be subjected to a greater suspension electromagnetic force than the rear superconducting magnet, thereby causing the front frame 5 to fold upward. In this way, the suspension frame posture can be adapted to the linear shape of the vertical curve. Since the present invention changes the integrated fixed design of the traditional frame 5, the vibration coupling effect of the front and rear frames 5 will also be significantly weakened.

[0024] The frame 5 is provided with an air spring and its height adjustment rod 2. The air spring is used to adjust the height of the vehicle body to adapt to different loads and track conditions. The height adjustment rod can fine-tune the height of the air spring to ensure the smooth operation of the train on different curves. The frame 5 is provided with a vertical shock absorber 6 and a lateral shock absorber 3. The vertical shock absorber 6 is used to reduce the vibration of the train in the vertical direction and improve the riding comfort, especially when passing through vertical curves. The lateral shock absorber 3 is used to reduce the vibration of the train in the lateral direction, especially when passing through flat curves, to help maintain the stability of the vehicle body.

[0025] An emergency buffer device 9 is also provided at the bottom of the magnet axle box 11. The emergency buffer device 9 is mainly composed of rubber sheets. When the train hits the rail or collides with the rail, it can provide buffering force to ensure the safety of passengers and prevent the superconducting magnet from leaking magnetism or causing other safety problems due to strong impact.

[0026] The upper surface of the frame 5 is also provided with a traction device 8 and a transverse stopper 13, and the transverse stopper 13 is arranged on both sides of the traction device 8. When the suspension frame is an independent suspension frame, the traction devices 8 at the front and rear ends of the frame 5 are installed on the same bottom of the vehicle body; when the suspension frame is an articulated suspension frame, the traction devices 8 at the front and rear ends of the frame 5 are installed on the bottom of the front and rear vehicles respectively; the traction device 8 should have a certain longitudinal vibration reduction capacity. The transverse stopper is used to limit the displacement of the vehicle body in the transverse direction, prevent the vehicle body from swinging excessively, and ensure the safe operation of the train on the curve.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A superconducting electric suspension frame with adaptive curve linear steering, characterized in that: It comprises two suspension frame units and a central folding mechanism (4) connected between the two suspension frame units; The suspension frame unit comprises two magnet axle boxes (11) arranged opposite to each other, a superconducting magnet (10) arranged in the magnet axle boxes (11), a refrigeration container, a frame (5) arranged between the two magnet axle boxes (11) and connected to the central folding mechanism (4), and a forced guide mechanism (12) arranged below the magnet axle boxes (11) and slidably matched to the central folding mechanism (4), wherein the magnet axle boxes (11) and the frame (5) are rotatable, a support wheel assembly (7) is arranged at the lower end of the frame (5), and a guide wheel assembly (1) is arranged at the upper end of the frame (5).

2. The superconducting electric suspension frame with adaptive curve linear steering according to claim 1 is characterized in that: The forced guide mechanism (12) comprises a forced guide frame (120) which is arranged below the magnet axle box (11) and has a deformable structure, and a slider (121) which is arranged at the end of the forced guide frame (120), wherein the slider (121) slides along the rod of the central folding mechanism (4).

3. The superconducting electric suspension frame with adaptive curve linear steering according to claim 2 is characterized in that: The forced guide frame (120) comprises a central rod (1201) and support rods (1202) movably arranged at both ends of the central rod (1201), the support rods (1202) being movably connected below the magnet shaft box (11), and the slider (121) being movably arranged at an end of the central rod (1201) close to the central folding mechanism (4).

4. The superconducting electric suspension frame with adaptive curve linear steering according to claim 1 is characterized in that: Two longitudinal springs, four vertical springs and four transverse springs are respectively arranged inside the magnet axle box (11).

5. The superconducting electric suspension frame with adaptive curve linear steering according to claim 1, characterized in that: Each superconducting magnet is provided with two superconducting coils.

6. The superconducting electric suspension frame with adaptive curve linear steering according to claim 1, characterized in that: An air spring and a height adjustment rod (2) thereof are arranged on the frame (5).

7. The superconducting electric suspension frame with adaptive curve linear steering according to claim 1, characterized in that: A vertical vibration damper (6) and a lateral vibration damper (3) are respectively arranged on the frame (5).

8. The superconducting electric suspension frame with adaptive curve linear steering according to claim 1, characterized in that: An emergency buffer device (9) is also provided at the bottom of the magnet axle box (11).

9. The superconducting electric suspension frame with adaptive curve linear steering according to claim 1, characterized in that: The upper surface of the frame (5) is also provided with a traction device (8) and a transverse stopper (13), and the transverse stopper (13) is arranged on both sides of the traction device (8).

Images