Medium-low speed magnetic levitation vehicle and transverse stabilizing device thereof

Abstract

According to the medium-low speed maglev vehicle and the transverse stabilizing device thereof, when the maglev vehicle passes through a curve road section, shaking of a vehicle body is inhibited by providing a gyroscopic moment, a pin shaft is used as a rotation center, a cantilever beam is used as a force arm, and a shock absorber is used as force input. The stress of the shock absorber can be reduced by increasing the length of the cantilever beam. When the maglev vehicle shakes the head, the vehicle body and the suspension frame move relatively, the movable sliding table at the end moves to sequentially drive the screw assembly, the rotating arm, the pin shaft and the cantilever beam to rotate, at the moment, one of the two shock absorbers is pulled, the other shock absorber is pressed, torque in the same direction is provided, the rotating arm is promoted to return to the initial position, and the vibration of the maglev vehicle is reduced. Therefore, the head shaking motion of the magnetic levitation vehicle is inhibited. By means of the arrangement, on the basis that functionality is guaranteed, the transverse stabilizing device of the medium-low-speed magnetic levitation vehicle has good buffering and vibration reduction performance when facing transverse disturbance, and the influence on the curve passing performance of the magnetic levitation vehicle can be effectively reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of maglev vehicles, and particularly relates to a medium and low speed maglev vehicle and its lateral stability device. Background Art

[0002] Medium and low speed maglev transportation has the characteristics of low running noise, low impact vibration, no wheel-rail wear, and strong climbing ability, and has good environmental adaptability and low environmental impact. As an important supplement to the existing wheel-rail system, medium and low speed maglev can flexibly cross urban areas or residential areas by means of elevated lines, and can also meet the suburban commuting needs between the central city and surrounding satellite cities, and is more suitable for various application scenarios such as the connection between tourist attractions and nearby transportation hubs or the sightseeing and ferry within tourist attractions.

[0003] The medium and low speed maglev vehicle system mainly includes a lightweight aluminum alloy car body, electromagnetic suspension, linear traction, and a U-shaped suspension frame. The suspension frame, as the running mechanism of the whole vehicle, bears the weight of the whole vehicle and passengers, and can realize functions such as maglev train suspension, guidance, braking, and traction, and is a key component of the whole vehicle. In order to improve the stability of the maglev vehicle, a lateral stability device is usually installed between the suspension frame and the car body to play a role in suppressing the yaw movement of the maglev vehicle.

[0004] In the current design, the lateral stability device can play a role in lateral stability when the maglev train passes through a straight section. However, when the maglev train passes through a curved section, it is guided by the lateral component force of the electromagnetic force. This lateral component force will make the arrangement of the electromagnets fit the curve as much as possible, and the force transmitted by the guiding mechanism in the lateral stability device is opposite to the electromagnetic force, and the two are contradictory, which is not conducive to the maglev train passing through the curved section. Similarly, when the maglev train just exits the curved section, the state is similar. Therefore, the currently designed lateral stability device affects the ability of the maglev train to pass through the curved section.

[0005] Therefore, how to overcome the above technical defects is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a medium and low speed maglev vehicle and its lateral stability device, which can effectively reduce the influence on the curve passing performance of the maglev vehicle.

[0007] To solve the above technical problems, the present invention provides a lateral stability device for a medium and low speed maglev vehicle, including two connecting seats, two screw assemblies, one swivel arm assembly, two shock absorbers, and two mounting seats. The swivel arm assembly includes a sleeve, a pin shaft, a cantilever beam, and a swivel arm;

[0008] One of the connecting seats corresponds to one of the screw assemblies. One end of each screw assembly is connected to the corresponding connecting seat. The two connecting seats are respectively used to connect the moving sliders at the corresponding ends of the suspension frame. The other ends of the two screw assemblies are respectively hinged to one end of the swing arm.

[0009] The other end of the swing arm is connected to one end of the pin shaft. The other end of the pin shaft is connected to the middle part of the cantilever beam. The two ends of the cantilever beam are respectively connected to one end of a shock absorber. The sleeve is sleeved on the pin shaft and is circumferentially rotatable and axially limited relative to the pin shaft. The sleeve is used to connect the vehicle body underframe.

[0010] The other end of the shock absorber is connected to the mounting seat, and the mounting seat is used to connect the vehicle body underframe.

[0011] Optionally, in the above-mentioned lateral stability device of the medium and low-speed maglev vehicle, the screw assembly and the shock absorber are arranged on the same side of the end of the suspension frame.

[0012] Optionally, in the above-mentioned lateral stability device of the medium and low-speed maglev vehicle, wear-resistant sleeves are further provided at both ends of the sleeve.

[0013] Optionally, in the above-mentioned lateral stability device of the medium and low-speed maglev vehicle, the wear-resistant sleeve has a large-diameter end and a small-diameter end. The small-diameter end is used to be embedded into the end of the sleeve, and one side of the large-diameter end abuts against the end of the sleeve and the other side abuts against the swing arm.

[0014] Optionally, in the above-mentioned lateral stability device of the medium and low-speed maglev vehicle, a wear plate and a washer are arranged between the wear-resistant sleeve and the cantilever beam.

[0015] Optionally, in the above-mentioned lateral stability device of the medium and low-speed maglev vehicle, a mounting hole is provided in the middle of the cantilever beam, and the pin shaft is in interference fit with the mounting hole of the cantilever beam.

[0016] Optionally, in the above-mentioned lateral stability device of the medium and low-speed maglev vehicle, the connection end of the mounting hole of the cantilever beam and the pin shaft has the same shape and is an irregular structure.

[0017] Optionally, in the above-mentioned lateral stability device of the medium and low-speed maglev vehicle, a pressing plate is provided at the top of the cantilever beam, and threaded holes are provided in the connection end of the pressing plate and the pin shaft.

[0018] Optionally, in the above-mentioned lateral stability device of the medium and low-speed maglev vehicle, the screw assembly includes multiple sections of screws and rod end spherical bearings for connecting the multiple sections of screws.

[0019] The present invention also provides a medium and low speed maglev vehicle, including a vehicle body, a suspension frame, and a lateral stability device of the medium and low speed maglev vehicle as described in the above embodiments.

[0020] The present invention provides a lateral stability device for a medium and low speed maglev vehicle, and its beneficial effects are as follows:

[0021] The sleeve in the swing arm assembly is fixed on the mounting seat of the vehicle body underframe, which can limit the movement of the swing arm assembly in the horizontal direction and the vertical direction. One end of the swing arm of the swing arm assembly is hinged to two sets of screw assemblies, and the other end is sleeved on the pin shaft, which can drive the pin shaft to rotate. The two screw assemblies are connected to the moving slide of the corresponding end of the suspension frame through a connecting seat. A shock absorber is arranged at each end of the cantilever beam of the swing arm assembly, and the shock absorber is fixed on the vehicle body underframe through a mounting seat.

[0022] When the maglev vehicle passes through a curved section, the vehicle body yaw is suppressed by providing a turning moment. Taking the pin shaft as the rotation center and the cantilever beam as the force arm, a shock absorber is used as the input of force. By increasing the length of the cantilever beam, the force on the shock absorber can be reduced. When the maglev vehicle has a yaw movement, relative movement occurs between the vehicle body and the suspension frame, and the moving slide at the end moves to drive the screw assembly, swing arm, pin shaft, and cantilever beam to rotate in sequence. At this time, one of the two shock absorbers is in tension and the other is in compression, and the moment in the same direction provided will prompt the swing arm to return to the initial position, that is, to suppress the yaw movement of the maglev vehicle. With the above settings, on the basis of ensuring functionality, the lateral stability device of the medium and low speed maglev vehicle should have good buffering and damping performance when facing lateral disturbances, and can effectively reduce the impact on the curve passing performance of the maglev vehicle.

[0023] The present invention also provides a medium and low speed maglev vehicle, including the lateral stability device of the medium and low speed maglev vehicle, which has the same beneficial effects and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of a lateral stability device for a medium and low speed maglev vehicle provided by an embodiment of the present invention;

[0026] Figure 2 It is an exploded structural diagram of the swing arm assembly provided by an embodiment of the present invention;

[0027] Figure 3Structural schematic diagram of the sleeve provided by an embodiment of the present invention;

[0028] Figure 4 Structural schematic diagram of the pin shaft provided by an embodiment of the present invention;

[0029] Figure 5 Structural schematic diagram of the cantilever beam provided by an embodiment of the present invention;

[0030] Figure 6 Structural schematic diagram of the swing arm provided by an embodiment of the present invention;

[0031] Figure 7 Structural schematic diagram of the shock absorber provided by an embodiment of the present invention.

[0032] In the above figure:

[0033] 100 - connecting seat;

[0034] 200 - screw assembly;

[0035] 300 - swing arm assembly; 310 - sleeve; 320 - pin shaft; 330 - cantilever beam; 340 - swing arm; 350 - wear-resistant sleeve; 360 - pressing plate; 370 - wear plate; 380 - washer;

[0036] 400 - shock absorber; 410 - rubber joint; 420 - piston rod;

[0037] 500 - mounting seat. Detailed implementation manners

[0038] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0039] The core of the present invention is to provide a medium - and low - speed maglev vehicle and its lateral stability device, which can effectively reduce the impact on the curve - passing performance of the maglev vehicle.

[0040] In order to enable those skilled in the art to better understand the technical solutions provided by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0041] First of all, before introducing the following specific embodiments, it is necessary to briefly explain relevant terms to have a clearer understanding of the technical solutions.

[0042] Suspension frame: The running mechanism of the whole vehicle, which bears the weight of the whole vehicle and passengers and can realize functions such as suspension, guidance, braking, and traction of the maglev vehicle.

[0043] Sliding table: Usually set between the suspension frame and the car body of the maglev vehicle, it plays a bridging role to ensure the dynamic connection and adjustment between the two. Specifically, it can be divided into a fixed sliding table and a movable sliding table. A certain number of fixed sliding tables and movable sliding tables are installed on a medium and low-speed maglev vehicle. When the maglev vehicle passes through a curved section, the fixed sliding table provides the rotational constraint of the suspension frame relative to the car body; the movable sliding table realizes the lateral sliding of the suspension frame relative to the car body.

[0044] Yaw motion: The rotation of the car body around the z-axis, and the z-axis direction is perpendicular to the rail surface direction.

[0045] Specifically, please refer to Figures 1 - 7 , a lateral stability device for a medium and low-speed maglev vehicle provided by the present invention includes two connecting seats 100, two screw assemblies 200, a swing arm assembly 300, two shock absorbers 400, and two mounting seats 500. The swing arm assembly 300 includes a sleeve 310, a pin shaft 320, a cantilever beam 330, and a swing arm 340.

[0046] Among them, two sets of lateral stability devices are provided on each car, arranged on the end suspension frames, and are used to correct the lateral swing of the car body.

[0047] The connecting seats 100 and the screw assemblies 200 are in a one-to-one correspondence relationship. One end of each screw assembly 200 is connected to the corresponding connecting seat 100. The two connecting seats 100 are respectively used to connect the movable sliding tables at their corresponding ends, that is, the two connecting seats 100 are respectively fixed on the 2 movable sliding tables at the ends. The other ends of the two screw assemblies 200 are both hinged to one end of the swing arm 340. The two screw assemblies 200 are respectively arranged on the movable sliding tables at both ends of the suspension frame through the connecting seats 100. When passing through a curved section, due to different forces at both ends, the two screw assemblies 200 drive the swing arm 340 to rotate.

[0048] The other end of the swing arm 340 is connected to one end of the pin shaft 320, and specifically can be sleeved on the pin shaft 320 and drive the pin shaft 320 to rotate. The other end of the pin shaft 320 is connected to the middle of the cantilever beam 330. Both ends of the cantilever beam 330 are respectively connected to one end of a shock absorber 400. The sleeve 310 is sleeved on the pin shaft 320 and the sleeve 310 is circumferentially rotatable and axially limited relative to the pin shaft 320. The sleeve 310 is used to connect the car body underframe.

[0049] The other end of the shock absorber 400 is connected to the mounting seat 500, and the mounting seat 500 is used to connect to the vehicle body underframe. Specifically, the shock absorber 400 can adopt a hydraulic shock absorber, which includes a piston, an oil inlet valve, a cylinder end seal, upper and lower connecting parts, oil, etc., and uses the negative work done by the liquid viscous resistance to absorb vibration energy. The movement of the piston rod 420 of the shock absorber 400 and the elastic constraint of the rubber node 410 can ensure the effective rotation of the swing arm assembly 300 in the horizontal plane. When installing the shock absorber 400, shims with different thicknesses are configured to ensure the smooth installation and effective operation of the shock absorber 400. In the initial state, the two shock absorbers are not stressed.

[0050] For the lateral stability device of the medium and low speed maglev vehicle provided by the present invention, the sleeve 310 in the swing arm assembly 300 is fixed on the mounting seat of the vehicle body underframe, which can limit the movement of the swing arm assembly 300 in the horizontal direction and the vertical direction. One end of the swing arm 340 of the swing arm assembly 300 is hinged to two sets of screw assemblies 200, and the other end is sleeved on the pin shaft 320, which can drive the pin shaft 320 to rotate. The two screw assemblies 200 are connected to the moving slide of the corresponding end of the suspension frame through the connecting seat 100. A shock absorber 400 is respectively arranged at both ends of the cantilever beam 330 of the swing arm assembly 300, and the shock absorber 400 is fixed to the vehicle body underframe through the mounting seat 500.

[0051] When the maglev vehicle passes through a curved section, the vehicle body yawing is suppressed by providing a turning moment. Taking the pin shaft 320 as the rotation center and the cantilever beam 330 as the force arm, the shock absorber 400 is used as the input of the force. By increasing the length of the cantilever beam 330, that is, the size of the force arm, the force on the shock absorber 400 can be reduced. When the maglev vehicle has a yawing motion, relative movement occurs between the vehicle body and the suspension frame, and the moving slide at the end moves to drive the screw assembly 200, the swing arm 340, the pin shaft 320, and the cantilever beam 330 to rotate in sequence. At this time, one of the two shock absorbers 400 is in tension and the other is in compression, and the moment in the same direction is provided to urge the swing arm 340 to return to the initial position, that is, to suppress the yawing motion of the maglev vehicle. With the above settings, on the basis of ensuring functionality, the lateral stability device of the medium and low speed maglev vehicle should have good buffering and shock absorption performance when facing lateral disturbances, and can effectively reduce the impact on the curve passing performance of the maglev vehicle.

[0052] In a specific embodiment, the screw assembly 200 and the shock absorber 400 can be arranged on the same side at the end, which requires a small installation space, has good processability, is convenient for installation and disassembly, can reduce the equipment cost, save the installation space, and improve the passenger riding comfort.

[0053] To improve the wear resistance performance, this solution further includes wear-resistant sleeves 350 provided at both ends of the sleeve 310. The wear-resistant sleeve 350 has a large-diameter end and a small-diameter end. The small-diameter end is used to be embedded in the end of the sleeve 310. One side of the large-diameter end abuts against the end of the sleeve 310, and the other side abuts against the swing arm 340. The wear-resistant sleeve 350 adopts a T-shaped structure, and the axial movement of the swing arm 340 and the cantilever beam 330 can be restricted by the sleeve 310 and the wear-resistant sleeve 350.

[0054] In addition, a wear plate 370 and a washer 380 are also provided between the wear-resistant sleeve 350 and the cantilever beam 330.

[0055] In a specific embodiment, an installation hole is provided in the middle of the cantilever beam 330. The pin shaft 320 passes through the sleeve 310 and is in interference fit with the installation hole of the cantilever beam 330.

[0056] To restrict the relative movement between the pin shaft 320 and the cantilever beam 330, the connection ends of the installation hole of the cantilever beam 330 and the pin shaft 320 have the same shape and are both special-shaped structures, such as polygonal, annular with multiple protrusions, etc. Shapes can restrict the rotation of the pin shaft 320 relative to the cantilever beam 330.

[0057] In a specific embodiment, a pressing plate 360 is provided at the top of the cantilever beam 330, and threaded holes are provided in the connection ends of the pressing plate 360 and the pin shaft 320. The pressing plate 360 can restrict the movement of the pin shaft 320 and the cantilever beam 330 relative to the sleeve, and only retain the rotational freedom of the pin shaft 320 in the horizontal plane.

[0058] In a specific embodiment, the screw assembly 200 includes multiple sections of screws and rod end spherical bearings for connecting the multiple sections of screws. The rod end spherical bearings can provide the rotational freedom of the screw assembly in the horizontal plane, and the installation requirements of different-sized suspension frames can be met by adjusting the length of the screws. One end of the 2 sets of screw assemblies 200 is respectively connected to the 2 connection seats 100, and the other end is connected to the swing arm 340.

[0059] Compared with the prior art, the beneficial effects of a lateral stability device for a medium and low-speed maglev vehicle provided by the present invention are as follows:

[0060] 1. Through the cooperation of the shock absorber 400 with the swing arm assembly 300 and the screw assembly 200, the maglev vehicle has good lateral stability performance and does not affect the passing performance of curved sections;

[0061] 2. The screw assembly 200 and the shock absorber 400 can be arranged on the same side at the end, requiring a small installation space, having good processability, and being convenient for installation and disassembly;

[0062] 3. In combination with the swing arm assembly 300, the shock absorber 400 is arranged horizontally to ensure the lateral stability of the maglev vehicle, avoid selecting a shock absorber 400 with too large a size, reduce costs, and have good economy.

[0063] In addition, the present invention also provides a medium and low speed maglev vehicle, which includes a vehicle body, a suspension frame, and the lateral stability device in the above specific embodiments.

[0064] The mounting seats on the vehicle body chassis are respectively connected to the two mounting seats 500 of the lateral stability device, and the vehicle body chassis is also connected to the sleeve 310. The suspension frame is respectively connected to the two connecting seats 100.

[0065] Obviously, the medium and low speed maglev vehicle including the above lateral stability device has the same beneficial effects, which will not be elaborated here.

[0066] The medium and low speed maglev vehicle provided by this solution has a multi-point support structure. The suspension frame is connected to the mounting seats on the vehicle body chassis through multiple sliding platforms, realizing decoupling between the vehicle body and the suspension frame. During the operation of the vehicle, when yawing motion occurs due to factors such as track excitation and lateral crosswind, a lateral stability device needs to be added to suppress lateral vibration and improve the running stability of the vehicle. The lateral stability device is arranged on the sliding platforms of the end suspension frames and is connected to the vehicle body chassis through devices such as the screw assembly 200, the swing arm assembly 300, the mounting seat 500, and the lateral shock absorber 400. When the vehicle yaws, the sliding platforms move in the opposite direction relative to the vehicle body, driving the swing arm 340 to rotate through the screw assembly 200, and then making the two shock absorbers 400 at the ends in a state of one pulling and one pressing, providing a turning moment to suppress the yawing motion of the vehicle, improving the lateral stability of the medium and low speed maglev vehicle in straight sections and curve sections, reducing the device cost, saving the installation space, and effectively improving the comfort of passengers.

[0067] In the description of the present application, it should be understood that for the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0068] Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B can represent A or B; the "and / or" in this article is only a description of the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0069] In the description of the present application, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present application in combination with the specific content of the technical solution.

[0070] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the various embodiments can be referred to each other.

[0071] Specific examples are used in this article to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method of the present invention and its core idea. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A lateral stabilization device for medium and low speed magnetic levitation vehicles, characterized in that: It comprises two connecting seats (100), two screw rod components (200), a rotating arm component (300), two vibration dampers (400) and two mounting seats (500), wherein the rotating arm component (300) comprises a sleeve (310), a pin shaft (320), a cantilever beam (330) and a rotating arm (340); One of the connection seats (100) corresponds to one of the screw rod assemblies (200), one end of each of the screw rod assemblies (200) is connected to the corresponding connection seat (100), the two connection seats (100) are respectively used to connect to the movable slides at the corresponding ends of the suspension frame, and the other ends of the two screw rod assemblies (200) are hinged to one end of the rotating arm (340); The other end of the rotating arm (340) is connected to one end of the pin shaft (320), the other end of the pin shaft (320) is connected to the middle of the cantilever beam (330), the two ends of the cantilever beam (330) are respectively connected to one end of a shock absorber (400), the sleeve (310) is sleeved on the pin shaft (320), and the sleeve (310) is rotatable and axially limited relative to the pin shaft (320), and the sleeve (310) is used to connect to the vehicle body underframe; The other end of the shock absorber (400) is connected to the mounting seat (500), and the mounting seat (500) is used to connect to the vehicle body underframe.

2. The lateral stabilization device for medium and low speed magnetic levitation vehicles according to claim 1, characterized in that: The screw rod assembly (200) and the shock absorber (400) are arranged on the same side of an end portion of the suspension frame.

3. The lateral stabilization device for medium and low speed magnetic levitation vehicles according to claim 1, characterized in that: It also includes wear-resistant sleeves (350) arranged at both ends of the sleeve (310).

4. The lateral stabilization device for medium and low speed magnetic levitation vehicles according to claim 3, characterized in that: The wear-resistant sleeve (350) has a large diameter end and a small diameter end, the small diameter end is used to be embedded in the end of the sleeve (310), one side of the large diameter end abuts against the end of the sleeve (310), and the other side abuts against the rotating arm (340).

5. The lateral stabilization device for medium and low speed magnetic levitation vehicles according to claim 4, characterized in that: A wear plate (370) and a washer (380) are provided between the wear-resistant sleeve (350) and the cantilever beam (330).

6. The lateral stabilization device for medium and low speed magnetic levitation vehicles according to claim 1, characterized in that: A mounting hole is provided in the middle of the cantilever beam (330), and the pin shaft (320) is interference-fitted with the mounting hole of the cantilever beam (330).

7. The lateral stabilization device for medium and low speed magnetic levitation vehicles according to claim 6, characterized in that: The mounting hole of the cantilever beam (330) and the connecting end of the pin shaft (320) have the same shape, and both are special-shaped structures.

8. The lateral stabilization device for medium and low speed magnetic levitation vehicles according to claim 6, characterized in that: A pressing plate (360) is provided on the top of the cantilever beam (330), and a threaded hole is provided on the connecting end of the pressing plate (360) and the pin shaft (320).

9. The lateral stabilization device for medium and low speed magnetic levitation vehicles according to claim 1, characterized in that: The screw rod assembly (200) comprises a plurality of screw rod sections and a rod end joint bearing for connecting the plurality of screw rod sections.

10. A medium-low speed maglev vehicle, characterized in that: The invention comprises a vehicle body, a suspension frame and a lateral stabilizing device for a medium- and low-speed magnetic levitation vehicle as claimed in any one of claims 1 to 9.

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