Magnetic levitation train rescue wheel device and magnetic levitation train

Abstract

The magnetic levitation train rescue wheel device and the magnetic levitation train are disclosed, and include a mounting base (3), a wheel carrier member (2), and a hydraulic cylinder (4). The mounting base (3) includes a horizontal mounting base (31) and a vertical mounting base (32). The wheel carrier members (2) are located on both sides of the vertical mounting base (32) and are rotatably attached to the vertical mounting base (32) by eccentric rotation shafts (5). Each wheel carrier member (2) has a wheel (1) attached to its outer side by a wheel axle (21), and the hydraulic cylinder (4) is attached to the wheel carrier member (2). The drive shaft (4) is arranged diagonally, one end of which is hingedly connected to the horizontal mounting base (31), and the other end of which is hingedly connected to the drive arm (22) of the wheel carrier member (2), driving the wheels (1) to a retracted state or a dropped state. Position limiting blocks (321) are provided on both sides of the vertical mounting base (32), and each wheel carrier member (2) is provided with a positioning support part (23), so that when the wheels (1) are dropped, the support part (2) of the wheel carrier member (2) abuts against the position limiting block (321) so as to face upward. This device solves the problem of difficulty in rescuing high-speed magnetic levitation vehicles and improves rescue efficiency.

Description

Technical Field

[0001] This application claims the priority of the invention patent application with the application number CN202310213016.X and the invention title "Magnetic Levitation Train Rescue Wheel Device and Magnetic Levitation Train", which was filed with the China Patent Office on March 7, 2023, and all of its contents are incorporated herein by reference.

[0002] The present invention relates to the technical field of magnetic levitation trains, and particularly to the magnetic levitation train rescue wheel device of magnetic levitation trains. The present invention further relates to a magnetic levitation train provided with the rescue wheel device.

Background Art

[0003] In recent years, with the rapid development of railway transportation, high-speed magnetic levitation has become an important development direction for railway transportation in the future. Due to its rail-holding structure, it is difficult to rescue when the vehicle fails. The traditional rescue method realizes the running of the vehicle during rescue by sliding between the skid and the rail surface, so the rescue is difficult and the efficiency is low.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a magnetic levitation train rescue wheel device that solves the problem of difficult rescue of high-speed magnetic levitation vehicles and improves the rescue efficiency.

[0005] Another object of the present invention is to provide a magnetic levitation train provided with the magnetic levitation train rescue wheel device.

Means for Solving the Problems

[0006] To achieve the above objective, the present invention provides a magnetic levitation train rescue wheel device comprising a mounting base, a wheel carrier member and a hydraulic cylinder, wherein the mounting base comprises a horizontal mounting base and a vertical mounting base, the vertical mounting base being located below the horizontal mounting base and connected to the horizontal mounting base, the wheel carrier member being located on both sides of the vertical mounting base and rotatably mounted to the vertical mounting base by an eccentric rotating shaft, each of the wheel carrier members having a wheel on its outer side attached by a wheel axle, and the hydraulic cylinder being positioned diagonally, One end is hinged to the horizontal mounting base, and the other end is hinged to the drive arm of the wheel carrier member, thereby driving the wheel carrier member to rotate together with the wheel around the eccentric rotation axis, the wheel is in a retracted or dropped state, position limiting blocks are provided on both sides of the vertical mounting base, and each wheel carrier member is provided with a positioning support portion, in the retracted state of the wheel, the support portion of the wheel carrier member does not come into contact with the position limiting block, and in the dropped state of the wheel, the support portion of the wheel carrier member comes into contact with the position limiting block facing upward.

[0007] Preferably, in the state where the wheel is in a dropped position, an angle is formed between the connection line between the rotation center of the eccentric rotation axis and the center of the wheel axle, and the vertical direction.

[0008] Preferably, the system further includes a crank and a lock spring, wherein the crank has an arc-shaped head portion with an extension arm, the head portion of the crank is hinged to the vertical mounting base, the upper end of the lock spring is connected to the horizontal mounting base, the lower end of the lock spring is connected to the extension arm of the crank, the crank is provided with an arc-shaped slide groove, the wheel carrier member is provided with a lock arm, the lock arms of the two wheel carrier members are connected by a pin shaft passing through the arc-shaped slide groove, and the pin shaft is engaged to slide in the arc-shaped slide groove.

[0009] Preferably, the upper end of the arc-shaped slide groove has a shape that curves toward the center of the circle.

[0010] Preferably, the drive arm and lock arm of each wheel carrier member are located on both sides of the wheel axle, respectively.

[0011] Preferably, the drive arm and the lock arm are located in substantially the same straight line, or there is an angle between the drive arm and the lock arm.

[0012] Preferably, the bottom of the position limiting block has a horizontal position limiting plane, and the outer edge of the support portion of the wheel carrier member is provided with a support plane, and in the wheel drop state, the support plane of the wheel carrier member abuts against the position limiting plane of the position limiting block facing upward.

[0013] Preferably, the support portion of the wheel carrier member is a part formed to extend radially with the wheel axle as its center, and the eccentric rotation axis connects the support portions of the two wheel carrier members laterally.

[0014] Preferably, the cylinder of the hydraulic cylinder is hinged to the horizontal mounting base, and the piston rod of the hydraulic cylinder is hinged to the drive arm. When the wheel is retracted, the oil in the rodless cavity of the hydraulic cylinder is closed, and when the wheel is lowered, the hydraulic cylinder is in a pressure-holding state.

[0015] To achieve the other objectives described above, the present invention provides a magnetic levitation train comprising a vehicle body and a rescue device provided on the bottom of the vehicle body, wherein the rescue device is a magnetic levitation train rescue wheel device as described in any one of the above claims, and each pair of the magnetic levitation train rescue wheel devices is provided on the bottom of the vehicle body in a mirror-symmetric manner, and the hydraulic cylinders of the two magnetic levitation train rescue wheel devices are distributed in an inverted "V" shape. [Effects of the Invention]

[0016] The magnetic levitation train rescue wheel device provided by this invention mainly consists of a mounting base, wheels, hydraulic cylinders, and an eccentric rotating shaft. The wheel lifting mechanism formed from these components allows the wheels to drop and lift the vehicle before rescue, the wheels to mechanically self-lock during the rescue process to carry the vehicle, and the wheels to retract and lock after the rescue is complete. This enables rapid rescue after a magnetic levitation vehicle malfunctions and offers advantages such as economy, practicality, lightweight design, modularity, and high reliability. Furthermore, the structural design of the eccentric rotating shaft has the advantage of a large moment arm, contributing to the realization of the retraction and drop process and effectively reducing the difficulty of designing and selecting the type of hydraulic element.

[0017] The magnetic levitation train provided by the present invention is equipped with the magnetic levitation train rescue wheel device, and since the magnetic levitation train rescue wheel device has the above-mentioned technical effects, a magnetic levitation train equipped with the magnetic levitation train rescue wheel device also has the corresponding technical effects. [Brief explanation of the drawing]

[0018] [Figure 1] This is a perspective view of a magnetic levitation train rescue wheel device provided by an embodiment of the present invention. [Figure 2] Figure 1 is a perspective view of the magnetic levitation train rescue wheel device after the two wheels have been removed. [Figure 3] Figure 2 is a front view of the magnetic levitation train rescue wheel device in its retracted state. [Figure 4] Figure 2 is a front view of the magnetic levitation train rescue wheel device in a fallen state. [Modes for carrying out the invention]

[0019] To help those skilled in the art better understand the solutions of the present invention, the present invention will be described in more detail below, combining the drawings and specific embodiments.

[0020] In this specification, terms such as "upper, lower, inner, outer" are established based on the positional relationship in the drawings. Depending on the differences in the drawings, the corresponding positional relationship may also change. Therefore, it is not an absolute limitation of the protection scope. Also, relative terms such as "first", "second", etc. are only for distinguishing two members with the same name, and do not require or imply the existence of such an actual relationship or order between these members.

[0021] As shown in FIGS. 1 and 2, in a specific embodiment, the magnetic levitation train rescue wheel device provided by the present invention mainly consists of members such as a wheel 1, a wheel carrier member 2, a mounting base 3, a hydraulic cylinder 4, an eccentric rotating shaft 5, a crank 6, and a locking spring 7.

[0022] The mounting base 3 is divided into two parts: a horizontal mounting base 31 and a vertical mounting base 32, providing a mounting foundation for the wheel carrier member 2, the eccentric rotating shaft 5, the hydraulic cylinder 4, the crank 6, the locking spring 7, etc. The vertical mounting base 32 is located below the horizontal mounting base 31 and is connected to the horizontal mounting base 31. The lateral projection of the vertical mounting base 32 is substantially rectangular, and a hole position structure for hollowing out is provided.

[0023] The wheel carrier member 2 is mainly used for mounting the wheel 1, and provides torque during the process of the wheel 1 falling and being stored under the action of the hydraulic cylinder 4. The wheel carrier member 2 is located on both sides of the vertical mounting base 32 and is rotatably mounted on the vertical mounting base 32 by the eccentric rotating shaft 5. The vertical mounting base 32 is provided with a separately connected lower cover plate. At the bottom of the main body of the vertical mounting base 32, a semi-circular shaft hole with a downward opening is provided. At the top of the lower cover plate, a semi-circular shaft hole with an upward opening is provided. After the two are connected, the eccentric rotating shaft 4 is rotatably mounted on the vertical mounting base 32 in a hanging form. A bearing is provided between the eccentric rotating shaft 5 and the shaft hole to ensure the stable and reliable rotation of the wheel carrier member 2.

[0024] On the outside of each wheel carrier member 2, a wheel axle 21 extending in the lateral direction is provided respectively. By means of the wheel axle 21, the wheel 1 on its outside is attached. For the two wheels 1 attached to the two wheel carrier members 2, their wheel axles are located on the same axis, but not a lateral through-axis. The space between them is partitioned by a vertical mounting base 32 to form two separated half-axles. In this way, during the process of storing and dropping the wheel 1, it can be guaranteed that the wheel axle 21 does not interfere with the vertical mounting base 32.

[0025] A drive arm 22 is provided on the wheel carrier member 2. The hydraulic cylinder 4 is arranged obliquely. One end of it is hinged to the horizontal mounting base 31, and the other end is hinged to the drive arm 22 of the wheel carrier member 2. Thereby, the wheel carrier member 2 is driven to rotate around the eccentric rotation axis 5 together with the wheel 1, and the wheel 1 is in the stored state or the dropped state.

[0026] Position-limiting blocks 321 are provided on both sides of the vertical mounting base 32. The top part of the position-limiting block 321 is arc-shaped, and the bottom part of the position-limiting block 321 has a horizontal position-limiting plane. A positioning support part 23 is provided on each wheel carrier member 2. The support part 23 is a part formed to extend radially with the wheel axle 21 as the center. The eccentric rotation axis 5 is located between the support parts 23 of the two wheel carrier members 2, connecting the two support parts 23 in the lateral direction. A support plane 231 is provided on the outer edge of the support part 23 of the wheel carrier member 2. In the stored state of the wheel, the support plane 231 of the wheel carrier member 2 rotates to a position avoiding the position-limiting block 321 and does not contact the position-limiting plane of the position-limiting block 321. In the dropped state of the wheel 1, the support plane 231 of the wheel carrier member 2 rotates to a position corresponding to the position-limiting block 321 and contacts the position-limiting plane of the position-limiting block 321 upward. The position-limiting block 321 is designed on the vertical mounting base 32. By engaging with the support part 23 of the wheel carrier member 2, it plays the role of transmitting the load and always keeping the wheel 1 in the dropped state during the rescue process.

[0027] In the state where wheel 1 is in a fallen position, an angle θ is formed between the connection line between the rotation center of the eccentric rotation axis 5 and the center of the wheel axle 21, and the vertical direction. In this way, after the rescue device completes the vehicle lifting operation, the rescue device's wheels are mechanically self-locked during the rescue process, ensuring that wheel 1 is not lifted unexpectedly.

[0028] Furthermore, a crank 6 and a lock spring 7 are provided, with the crank 6 positioned between the lock spring 7 and the vertical mounting base 32, and hinged to the lock spring 3 and the vertical mounting base 32, respectively.

[0029] Specifically, the crank 6 has an arc-shaped head portion with an extension arm 61, a housing groove is provided on the side of the vertical mounting base 32 adjacent to the crank 6, the head portion of the crank 6 fits into the housing groove and is hinge-connected to the vertical mounting base 32, the lock spring 7 is positioned vertically, its upper end is connected to the horizontal mounting base 31 and its lower end is connected to the extension arm 61 of the crank 6, the crank 6 is provided with an arc-shaped slide groove 62, the wheel carrier member 2 is provided with a lock arm 24, the lock arms 24 of the two wheel carrier members 2 on both sides of the crank 6 are connected by a pin shaft, the pin shaft is located in the arc-shaped slide groove 62 of the crank 6 and is engaged to slide in the arc-shaped slide groove 62, and can slide along an arc-shaped trajectory within the arc-shaped slide groove 62.

[0030] By adding the crank 6 and lock spring 7, it is ensured that the locking force when retracting the wheel 1 is sufficiently large, and after the wheel 1 overcomes the locking force, it is ensured that the interaction force between the wheel carrier member 2 and the crank 6 is small, thereby effectively extending the lifespan of the members.

[0031] Furthermore, the upper end of the arc-shaped slide groove 62 is designed to curve toward the center of the circle. When the wheel 1 is retracted, the pin shaft between the lock arms 24 enters the curved head portion of the arc-shaped slide groove 62, and the arc-shaped groove locks the rescue wheel when it is retracted.

[0032] The drive arm 22 and lock arm 24 of each wheel carrier member 2 are located on either side of the wheel axle 21, respectively. In other words, the longitudinal extensions of the drive arm 22 and the lock arm 24 both pass through the center of the wheel axle 21. In this embodiment, the drive arm 22 and the lock arm 24 are located on almost the same straight line, forming a roughly "straight" shape. When the drive arm 22 swings downward due to the drive of the hydraulic cylinder 4, the lock arm 24 swings upward, and when the drive arm 22 swings upward due to the drive of the hydraulic cylinder 4, the lock arm 24 swings downward.

[0033] The cylinder of the hydraulic cylinder 4 is hinged to the horizontal mounting base 31, and the piston rod of the hydraulic cylinder 4 is hinged to the drive arm 22 of the wheel carrier member 2. When the wheel 1 is retracted, the fluid in the rodless cavity of the hydraulic cylinder 4 is closed, and locking is achieved by closing the fluid in the hydraulic cylinder 4. When the wheel 1 is dropped, the hydraulic cylinder 4 is in a pressure-holding state. The pressure-holding function of the hydraulic cylinder 4 avoids the risk that the mechanical self-locking will be invalidated due to vibration when the wheel 1 passes over a rail joint.

[0034] Furthermore, by using an elastic wheel for each wheel, the impact force between the wheel and the rail is reduced when the elastic wheel passes over the rail joints, ensuring the reliability and service life of the entire structure.

[0035] As shown in Figures 3 and 4, when the vehicle malfunctions and requires rescue, the hydraulic cylinder 4 retracts, the drive arm 22 of the wheel carrier member 2 swings upward, pulling the wheel carrier member 2 to rotate around the eccentric rotation axis 5, and the lock arm 24 of the wheel carrier member 2 swings downward, overcoming the locking force of the spring 7 and crank 6, causing the wheel carrier member 2 and wheel 1 to drop.

[0036] After wheel 1 makes contact with the rail surface, the wheel 1 supports the vehicle instead of the support skid on the suspension, and the vehicle is gradually pushed upward by the sustained tensile force of the hydraulic cylinder 4. The entire vehicle lifting operation is completed after the support plane 231 of the wheel carrier member 2 makes full contact with the position limiting plane of the position limiting block 321.

[0037] After the rescue is complete, the thrust of the hydraulic cylinder 4 returns the wheel carrier member 2 and wheel 1 to the locked position. At this time, the oil in the rodless cavity of the hydraulic cylinder 4 is closed, enabling the wheel carrier member 2 and wheel 1 to be retracted. When the oil in the rodless cavity leaks, the wheel carrier member 3 and wheel 1 are locked by the lock spring 7 and crank 6. The design of the lock spring 7 and crank 6 effectively prevents the wheel 1 from falling and improves the reliability of stable locking after the wheel 1 is retracted.

[0038] The structure of the wheel carrier member 2 can form a large moment arm during the dropping and retraction process of the rescue wheel, effectively reducing the load on the hydraulic cylinder 4 during operation, facilitating the selection and design of the hydraulic cylinder 4 type, and achieving self-locking by its own mechanical structure after the retraction operation is completed. The pressure holding function of the hydraulic cylinder 4 further enhances this self-locking effect, effectively ensuring that the wheel 1 can pass smoothly through the railway joints.

[0039] The above embodiments are merely preferred solutions of the present invention and are not limited thereto. Different embodiments can be obtained by adjusting them to meet actual needs. For example, there may be an angle between the drive arm 22 and the lock arm 24, or the wheel carrier member 2 may be designed in another suitable shape. Since there are many possible realizations, each one is not described here by example.

[0040] The present invention aims to realize a rapid rescue function for high-speed magnetic levitation vehicles, and provides a rescue wheel device applicable to rescue operations for high-speed magnetic levitation vehicles, based on the design principles of economy, practicality, weight reduction, modularity, and high reliability. In this rescue wheel device, a special mounting base, wheel carrier member, wheel, hydraulic cylinder, eccentric rotating shaft, crank, and lock spring are designed, and the mechanism formed from its own components realizes the functions of the rescue device, such as stable vehicle lifting, self-locking of the wheels after lifting the vehicle, and wheel retraction locking, and based on these functions, rapid rescue can be carried out after a vehicle malfunction.

[0041] Aside from the magnetic levitation train rescue wheel device described above, the present invention further provides a magnetic levitation train comprising a vehicle body and a rescue device provided at the bottom of the vehicle body, the rescue device being the magnetic levitation train rescue wheel device described above, each of two magnetic levitation train rescue wheel devices being provided at the bottom of the vehicle body as a pair in a mirror-symmetrical manner, the hydraulic cylinders 4 of the two magnetic levitation train rescue wheel devices being distributed in an inverted "V" shape, and other structures of the magnetic levitation train can be found in the prior art and are not elaborated upon in this specification.

[0042] The above provides a detailed description of the magnetic levitation train rescue wheel device and magnetic levitation train provided by the present invention. The principles and embodiments of the present invention will be explained using specific examples in this specification, and the above description of embodiments is used solely to understand the spirit of the present invention. Hereinafter, those skilled in the art will know that several improvements and modifications to the present invention will be made without departing from the principles of the present invention, and these improvements and modifications will also fall within the scope of protection of the claims of the present invention. [Explanation of symbols]

[0043] 1...wheel; 2. Wheel carrier components; 21...Wheel axle; 22 ···Drive arm; 23...Support part; 24... Lock arm; 231 ...support plane; 3. Mounting base; 31...Horizontal mounting base; 32 ···Vertical mounting base; 321 ···Location restriction block; 4. Hydraulic cylinder; 5. Eccentric rotating shaft; 6...crank; 61...Extendable arm; 62... Arc-shaped sliding groove; 7. Lock spring.

Claims

1. A magnetic levitation train rescue wheel device comprising a mounting base (3), a wheel carrier member (2), and a hydraulic cylinder (4), wherein the mounting base (3) comprises a horizontal mounting base (31) and a vertical mounting base (32), the vertical mounting base (32) being located below the horizontal mounting base (31) and connected to the horizontal mounting base (31), the wheel carrier member (2) being located on both sides of the vertical mounting base (32) and rotatably mounted to the vertical mounting base (32) by an eccentric rotating shaft (5), each of the wheel carrier member (2) having a wheel (1) attached to its outer side by a wheel axle (21), the hydraulic cylinder (4) being positioned diagonally and one end being hinged to the horizontal mounting base (31), and the other The end of the wheel carrier member (2) is hinged to the drive arm (22) of the wheel carrier member (2), thereby driving the wheel carrier member (2) to rotate together with the wheel (1) around the eccentric rotation axis (5), the wheel (1) is in a retracted or dropped state, position limiting blocks (321) are provided on both sides of the vertical mounting base (32), each wheel carrier member (2) is provided with a positioning support portion (23), in the retracted state of the wheel (1), the support portion (23) of the wheel carrier member (2) does not come into contact with the position limiting block (321), and in the dropped state of the wheel, the support portion (2) of the wheel carrier member (2) comes into contact with the position limiting block (321) in an upward direction.

2. The magnetic levitation train rescue wheel device according to claim 1, characterized in that, in the state in which the wheel (1) is in a fallen state, an angle is formed between the connection line between the rotation center of the eccentric rotating shaft (5) and the center of the wheel axle (21) and the vertical direction.

3. The magnetic levitation train rescue wheel device according to claim 1, further comprising a crank (6) and a lock spring (7), wherein the crank (6) has an arc-shaped head portion having an extension arm (61), the head portion of the crank (6) is hinged to the vertical mounting base (32), the upper end of the lock spring (7) is connected to the horizontal mounting base (31), the lower end of the lock spring (7) is connected to the extension arm (61) of the crank (6), the crank (6) is provided with an arc-shaped slide groove (62), the wheel carrier member (2) is provided with a lock arm (24), the lock arms (24) of the two wheel carrier members (2) are connected by a pin shaft passing through the arc-shaped slide groove (62), and the pin shaft is engaged to slide in the arc-shaped slide groove (62).

4. The magnetic levitation train rescue wheel device according to claim 3, characterized in that the upper end of the arc-shaped slide groove (62) is curved toward the center of the circle.

5. The magnetic levitation train rescue wheel device according to claim 3, characterized in that the drive arm (22) and lock arm (24) of each wheel carrier member (2) are located on both sides of the wheel axle (21), respectively.

6. The magnetic levitation train rescue wheel device according to claim 5, characterized in that the drive arm (22) and the lock arm (24) are located in substantially the same straight line, or there is an angle between the drive arm (22) and the lock arm (24).

7. The magnetic levitation train rescue wheel device according to claim 1, characterized in that the bottom of the position limiting block (321) has a horizontal position limiting plane, a support plane (231) is provided on the outer edge of the support portion (23) of the wheel carrier member (2), and in the state in which the wheel (1) is dropped, the support plane (231) of the wheel carrier member (2) is in contact with the position limiting plane of the position limiting block (321) facing upward.

8. The magnetic levitation train rescue wheel device according to claim 7, characterized in that the support portion (23) of the wheel carrier member (2) is a portion formed to extend radially with the wheel axle (21) as its center, and the eccentric rotating shaft (5) connects the support portions (23) of the two wheel carrier members (2) in the lateral direction.

9. The magnetic levitation train rescue wheel device according to any one of claims 1 to 8, characterized in that the cylinder of the hydraulic cylinder (4) is hinged to the horizontal mounting base (31), the piston rod of the hydraulic cylinder (4) is hinged to the drive arm (22), the oil in the rodless cavity of the hydraulic cylinder (4) is closed when the wheel (1) is retracted, and the hydraulic cylinder (4) is in a pressure-holding state when the wheel (1) is dropped.

10. A magnetic levitation train comprising a vehicle body and a rescue device provided on the bottom of the vehicle body, wherein the rescue device is a magnetic levitation train rescue wheel device according to any one of claims 1 to 8, and each pair of the magnetic levitation train rescue wheel devices is provided on the bottom of the vehicle body in a mirror-symmetrical manner, and the hydraulic cylinders (4) of the two magnetic levitation train rescue wheel devices are distributed in an inverted "V" shape.

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