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 priority from a patent application for invention filed with the China Patent Office on March 7, 2023, bearing application number CN202310213016.X and entitled "Magnetic levitation train rescue wheel device and magnetic levitation train," the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the technical field of magnetic levitation trains, and more particularly to a magnetic levitation train rescue wheel device for a magnetic levitation train. The present invention also relates to a magnetic levitation train equipped with the rescue wheel device. [Background technology]

[0003] In recent years, with the rapid development of rail transport, high-speed magnetic levitation has become an important development direction for rail transport in the future. Because high-speed magnetic levitation has a rail-supported structure, it is difficult to rescue a vehicle when it breaks down. Traditional rescue methods rely on sliding between the skid and the rail surface to enable the vehicle to move during rescue, which makes rescue difficult and inefficient. Summary of the Invention [Problem to be solved by the invention]

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

[0005] Another object of the present invention is to provide a magnetic levitation train equipped with the magnetic levitation train rescue wheel device. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a magnetic levitation train rescue wheel device, comprising: a mounting base, a wheel carrier member, and a hydraulic cylinder; the mounting base comprises a horizontal mounting base and a vertical mounting base; the vertical mounting base is located below the horizontal mounting base and connected to the horizontal mounting base; the wheel carrier members are located on both sides of the vertical mounting base and are rotatably attached to the vertical mounting base by eccentric rotation shafts; each wheel carrier member has a wheel attached to its outer side by a wheel shaft; the hydraulic cylinder is disposed obliquely; One end is hingedly connected to the horizontal mounting base and the other end is hingedly connected to the drive arm of the wheel carrier member, thereby driving the wheel carrier member to rotate around the eccentric rotation axis together with the wheel, the wheel being in a stored state or a 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, and when the wheels are in a stored state, the support portion of the wheel carrier member is not abutted against the position limiting block, and when the wheels are dropped, the support portion of the wheel carrier member abuts against the position limiting block so as to face upward.

[0007] Preferably, when the wheel is in a dropped state, an included angle is formed between a connecting line between the rotation center of the eccentric rotation shaft and the center of the wheel axle and a vertical direction.

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

[0009] Preferably, the upper end of the arc-shaped slide groove is curved toward the center of the circle.

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

[0011] Preferably, the drive arm and the lock arm are positioned substantially on the same line, or there is an included 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 a support plane is provided on the outer edge of the support part of the wheel carrier member, and when the wheel is in a dropped state, the support plane of the wheel carrier member abuts upward against the position limiting plane of the position limiting block.

[0013] Preferably, the support portion of the wheel carrier member is a portion formed so as to extend radially with the wheel axle as its center, and the eccentric rotation shaft 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, and when the wheel is in a retracted state, the oil fluid in the rodless cavity of the hydraulic cylinder is closed, and when the wheel is in a dropped state, the hydraulic cylinder is in a pressure-holding state.

[0015] In order to achieve the above-mentioned other objectives, the present invention provides a magnetic levitation train, comprising a car body and a rescue device installed on the bottom of the car body, the rescue device being a magnetic levitation train rescue wheel device as described in any one of the above-mentioned claims, wherein two of the magnetic levitation train rescue wheel devices are installed as a pair on the bottom of the car body in a mirror-symmetrical 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 system provided by this invention is primarily composed of a mounting base, wheels, hydraulic cylinders, and an eccentric rotating shaft. The wheel lifting mechanism formed by these components allows the wheels to drop and lift the vehicle before rescue, mechanically self-locks the wheels to carry the vehicle during the rescue process, and retracts and locks the wheels after the rescue is complete. This system allows for rapid rescue after a magnetic levitation vehicle malfunction, and offers advantages such as economy, practicality, light weight, modularity, and high reliability. Furthermore, the structural design of the eccentric rotating shaft features a large moment arm, which facilitates the retraction and retraction process and effectively reduces the complexity of hydraulic element design and type selection.

[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, the magnetic levitation train equipped with the magnetic levitation train rescue wheel device also has the corresponding technical effects. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view of a magnetic levitation train rescue wheel device provided by an embodiment of the present invention; FIG. [Figure 2] FIG. 2 is a perspective view of the magnetic levitation train rescue wheel device of FIG. 1 after two wheels have been removed. [Figure 3] FIG. 3 is a front view of the magnetic levitation train rescue wheel device of FIG. 2 in a retracted state. [Figure 4] FIG. 3 is a front view of the magnetic levitation train rescue wheel device of FIG. 2 in a falling state. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to make those skilled in the art better understand the solutions of the present invention, the present invention will be further described in detail hereinafter in combination with drawings and specific embodiments.

[0020] In this specification, terms such as "upper, lower, inner, outer" are established based on the positional relationships in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, they do not absolutely limit the scope of protection. Furthermore, relational terms such as "first", "second", etc. are merely used to distinguish two elements having the same name, and do not require or imply the existence of such an actual relationship or order between these elements.

[0021] As shown in Figures 1 and 2, in a specific embodiment, the magnetic levitation train rescue wheel device provided by the present invention mainly comprises 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, which provide mounting bases for the wheel carrier member 2, the eccentric rotating shaft 5, the hydraulic cylinder 4, the crank 6, and 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 vertical mounting base 32 has a substantially rectangular lateral projection and is provided with a hole position structure for lightening.

[0023] The wheel carrier member 2 is mainly used to mount the wheel 1, and the hydraulic cylinder 4 provides torque during the process of dropping and storing the wheel 1. The wheel carrier member 2 is located on both sides of the vertical mounting base 32 and is rotatably mounted to the vertical mounting base 32 by the eccentric rotating shaft 5. A lower cover plate is separately connected to the vertical mounting base 32. The bottom of the body of the vertical mounting base 32 is provided with a semicircular shaft hole with its opening facing downward, and the top of the lower cover plate is provided with a semicircular shaft hole with its opening facing upward. After the two are connected, the eccentric rotating shaft 4 is rotatably mounted to the vertical mounting base 32 in a hanging form, and a bearing is provided between the eccentric rotating shaft 5 and the shaft hole, ensuring stable and reliable rotation of the wheel carrier member 2.

[0024] A wheel axle 21 extending laterally is provided on the outer side of each wheel carrier member 2, and the wheel 1 on the outer side is attached to the wheel axle 21. For the two wheels 1 attached to the two wheel carrier members 2, the wheel axles are located on the same axis, but are not horizontal through-axis, and are separated by a vertical mounting base 32 to form two spaced-apart half-axles. In this way, it is ensured that the wheel axle 21 does not interfere with the vertical mounting base 32 during the process of storing and dropping the wheel 1.

[0025] The wheel carrier member 2 is provided with a drive arm 22, and the hydraulic cylinder 4 is arranged obliquely, 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, thereby driving the wheel carrier member 2 to rotate around the eccentric rotation axis 5 together with the wheel 1, and the wheel 1 is in a stored state or a 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 blocks 321 is arc-shaped, and the bottom of the position limiting blocks 321 has a horizontal position limiting plane. Each wheel carrier member 2 is provided with a positioning support part 23, which is a part formed to expand radially with the wheel axle 21 as its center. The eccentric rotating shaft 5 is located between the support parts 23 of the two wheel carrier members 2 and connects the two support parts 23 laterally. A support plane 231 is provided on the outer edge of the support part 23 of the wheel carrier member 2. When the wheels are stored, the support plane 231 of the wheel carrier member 2 rotates to a position that avoids the position limiting blocks 321 and does not abut against the position limiting plane of the position limiting blocks 321. When the wheels 1 are dropped, the support plane 231 of the wheel carrier member 2 rotates to a position corresponding to the position limiting blocks 321 and abuts upward against the position limiting plane of the position limiting blocks 321. A position limiting block 321 is designed on the vertical mounting base 32, which is engaged with the support part 23 of the wheel carrier member 2, thereby transmitting the load and keeping the wheel 1 in a dropped state during the rescue process.

[0027] When the wheel 1 is dropped, an included angle θ is formed between the vertical line and the connection line between the rotation center of the eccentric rotating shaft 5 and the center of the wheel axle 21. In this way, after the rescue device has completed the vehicle lifting operation, the wheels of the rescue device are mechanically self-locked during the rescue process, ensuring that the wheel 1 is not lifted unexpectedly.

[0028] Furthermore, a crank 6 and a lock spring 7 are further provided, and the crank 6 is located between the lock spring 7 and the vertical mount 32 and is hingedly connected to the lock spring 3 and the vertical mount 32, respectively.

[0029] Specifically, the crank 6 has an arc-shaped head with an extending arm 61, a receiving groove is provided on the side of the vertical mounting base 32 adjacent to the crank 6, the head of the crank 6 fits into the receiving groove and is hingedly connected to the vertical mounting base 32, the locking spring 7 is arranged vertically, its upper end is connected to the horizontal mounting base 31 and its lower end is connected to the extending arm 61 of the crank 6, an arc-shaped sliding groove 62 is provided on the crank 6, a locking arm 24 is provided on the wheel carrier member 2, the locking arms 24 of the two wheel carrier members 2 on both sides of the crank 6 are connected by a pin shaft, which is located in the arc-shaped sliding groove 62 of the crank 6 and slidably engaged with the arc-shaped sliding groove 62, so that it can slide along an arc-shaped trajectory within the arc-shaped sliding groove 62.

[0030] The additional arrangement of the crank 6 and the locking spring 7 not only ensures that the locking force is sufficiently large when the wheel 1 is retracted, but also ensures that the interaction force between the wheel carrier member 2 and the crank 6 is small after the wheel 1 overcomes the locking force, thereby effectively extending the life of the members.

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

[0032] The drive arm 22 and the lock arm 24 of each wheel carrier member 2 are located on either side of the wheel axle 21, i.e., 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 approximately the same straight line, forming a roughly "single" 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 in the retracted state, the oil fluid in the rodless cavity of the hydraulic cylinder 4 is closed, and the lock is realized by the oil fluid closure in the hydraulic cylinder 4. When the wheel 1 is in the dropped state, the hydraulic cylinder 4 is in a pressure holding state. The pressure holding function of the hydraulic cylinder 4 can avoid the risk of the mechanical self-lock being disabled due to vibration when the wheel 1 passes over a railway joint.

[0034] In addition, an elastic wheel is used for the wheel 1, which reduces the impact force between the wheel and the railway when the elastic wheel passes over the railway joint, thereby ensuring the reliability and service life of the entire structure.

[0035] As shown in Figures 3 and 4, when the vehicle breaks down and needs rescue, the hydraulic cylinder 4 is retracted, the drive arm 22 of the wheel carrier member 2 swings up and pulls 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 down, overcoming the locking force of the spring 7 and the crank 6 and causing the wheel carrier member 2 and the wheel 1 to drop.

[0036] After the wheels 1 contact the rail surface, the wheels 1 support the vehicle instead of the support skids on the suspension, and the vehicle is gradually pushed up under the continuous tensile force of the hydraulic cylinders 4. After the support plane 231 of the wheel carrier member 2 completely contacts the position limiting plane of the position limiting block 321, the entire vehicle lifting operation is completed.

[0037] After the rescue is completed, the wheel carrier member 2 and the wheel 1 return to the locked position under the thrust of the hydraulic cylinder 4, and at this time, the oil in the rodless cavity of the hydraulic cylinder 4 is blocked, realizing the storage of the wheel carrier member 2 and the wheel 1. When the oil in the rodless cavity leaks, the wheel carrier member 3 and the wheel 1 are locked by the locking spring 7 and the crank 6, and the design of the locking spring 7 and the crank 6 effectively prevents the wheel 1 from falling, improving the reliability of the stable locking after the wheel 1 is stored.

[0038] The structure of the wheel carrier member 2 can form a large moment arm during the process of dropping and storing the rescue wheel, effectively reducing the load on the hydraulic cylinder 4 during operation, facilitating the selection and design of the type of hydraulic cylinder 4. After the storing operation is completed, the hydraulic cylinder 4 can achieve self-locking through its own mechanical structure, and the pressure retention function of the hydraulic cylinder 4 can enhance the self-locking effect, effectively ensuring that the wheel 1 can pass through the railway joint smoothly.

[0039] The above embodiment is merely a preferred solution of the present invention, and is not specifically limited thereto. Based on this, different embodiments can be obtained by corresponding adjustments according to actual needs. For example, the drive arm 22 and the locking arm 24 may have an included angle, or the wheel carrier member 2 may be designed with other suitable shapes. Because there are many possible implementations, no examples are given here.

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

[0041] In addition to the above-mentioned magnetic levitation train rescue wheel device, the present invention also provides a magnetic levitation train, which comprises a car body and a rescue device installed at the bottom of the car body, and the rescue device is the magnetic levitation train rescue wheel device described above, where each pair of two magnetic levitation train rescue wheel devices is installed at the bottom of the car 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. For other structures of the magnetic levitation train, reference can be made to the prior art and no further discussion is made in this specification.

[0042] The above is a detailed introduction to the magnetic levitation train rescue wheel device and magnetic levitation train provided by the present invention. Specific examples are used in this specification to explain the principles and embodiments of the present invention, and the description of the above examples is merely used to understand the gist of the present invention. It is understood that those skilled in the art may make some improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. [Explanation of symbols]

[0043] 1...wheel; 2 ···Wheel carrier member; 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 ···Position restriction block; 4 ···Hydraulic cylinder; 5. Eccentric rotating shaft; 6 ··· crank; 61 ···extension arm; 62 ···Arc-shaped slide groove; 7 Locking 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), the mounting base (3) comprising 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 members (2) being located on both sides of the vertical mounting base (32) and rotatably attached to the vertical mounting base (32) by eccentric rotation shafts (5), each wheel carrier member (2) having an outer wheel (1) attached thereto by a wheel axle (21), the hydraulic cylinder (4) being disposed obliquely, one end of which is hingedly connected to the horizontal mounting base (31), and other a vertical mounting base (32) having a vertical end hingedly connected to a drive arm (22) of the wheel carrier member (2) to drive the wheel carrier member (2) to rotate around the eccentric rotation axis (5) together with the wheel (1), the wheel (1) being in a stored state or a dropped state, position limiting blocks (321) being provided on both sides of the vertical mounting base (32), each wheel carrier member (2) being provided with a positioning support portion (23), the support portion (23) of the wheel carrier member (2) not abutting against the position limiting block (321) when the wheel (1) is in a stored state, and the support portion (22) of the wheel carrier member (2) abutting against the position limiting block (321) so as to face upward when the wheel (1) is in a dropped state.

2. 2. The magnetic levitation train rescue wheel device according to claim 1, wherein, when the wheel (1) is falling, an included angle is formed between the connecting line between the rotation center of the eccentric rotating shaft (5) and the center of the wheel axle (21) and the vertical direction.

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

4. 4. A rescue wheel device for magnetic levitation trains according to claim 3, wherein 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 the 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 positioned on approximately the same straight line, or there is an included angle between the drive arm (22) and the lock arm (24).

7. 2. 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, and a support plane (231) is provided on the outer edge of the support portion (23) of the wheel carrier member (2), and when the wheel (1) is in a dropped state, the support plane (231) of the wheel carrier member (2) abuts upward against the position limiting plane of the position limiting block (321).

8. The magnetic levitation train rescue wheel device described in claim 7, characterized in that the support portion (23) of the wheel carrier member (2) is a portion formed so as to expand radially with the wheel axle (21) as its center, and the eccentric rotation axis (5) connects the support portions (23) of the two wheel carrier members (2) laterally.

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 hingedly connected to the horizontal mounting base (31), the piston rod of the hydraulic cylinder (4) is hingedly connected to the drive arm (22), the oil fluid in the rodless cavity of the hydraulic cylinder (4) is closed when the wheel (1) is in a stored state, and the hydraulic cylinder (4) is in a pressure-holding state when the wheel (1) is in a dropped state.

10. A magnetic levitation train comprising a car body and a rescue device provided on the bottom of the car body, wherein the rescue device is a magnetic levitation train rescue wheel device as described in any one of claims 1 to 9, wherein each of the two magnetic levitation train rescue wheel devices is provided as a set on the bottom of the car body so as to be mirror symmetrical, and the hydraulic cylinders (4) of the two magnetic levitation train rescue wheel devices are distributed so as to form an inverted "V" shape.

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