A maglev train rescue wheel device and a maglev train

Abstract

This invention discloses a maglev train rescue wheel device and a maglev train, including a mounting base, wheel carriers, and hydraulic cylinders. The mounting base includes a horizontal mounting base and a vertical mounting base. The wheel carriers are located on both sides of the vertical mounting base and are rotatably mounted on the vertical mounting base via eccentric shafts. Each wheel carrier has a wheel mounted on its outer side via a wheel axle. The hydraulic cylinder is arranged obliquely, with one end hinged to the horizontal mounting base and the other end hinged to the drive arm of the wheel carrier to drive the wheel into a retracted or lowered state. Limiting blocks are provided on both sides of the vertical mounting base, and each wheel carrier has a support part for positioning. In the lowered state, the support part of the wheel carrier abuts upward against the limiting blocks. This device can solve the problem of difficult rescue of high-speed maglev vehicles and improve rescue efficiency.

Description

Technical Field

[0001] This invention relates to the field of maglev train technology, and more particularly to a maglev train rescue wheel device. This invention also relates to a maglev train equipped with the aforementioned rescue wheel device. Background Technology

[0002] In recent years, with the rapid development of rail transit, high-speed maglev has become an important development direction for future rail transit. However, the rail-hugging structure of high-speed maglev trains makes rescue difficult when a vehicle malfunctions. Traditional rescue methods rely on skids sliding between the skids and the rail surface to move the vehicle during rescue, resulting in difficult and inefficient rescue operations. Summary of the Invention

[0003] The purpose of this invention is to provide a maglev train rescue wheel device to solve the problem of difficult rescue of high-speed maglev vehicles and improve rescue efficiency.

[0004] Another object of the present invention is to provide a maglev train equipped with the aforementioned maglev train rescue wheel device.

[0005] To achieve the above objectives, the present invention provides a maglev train rescue wheel device, comprising a mounting base, wheel carriers, and a hydraulic cylinder; the mounting base includes a horizontal mounting base and a vertical mounting base, the vertical mounting base being located below and connected to the horizontal mounting base; the wheel carriers are located on both sides of the vertical mounting base and are rotatably mounted on the vertical mounting base via an eccentric shaft, each wheel carrier having a wheel mounted on its outer side via a wheel axle; the hydraulic cylinder is obliquely arranged, one end of which is hinged to the horizontal mounting base, and the other end is hinged to the drive arm of the wheel carrier, to drive the wheel carrier and the wheel together to rotate around the eccentric shaft, so that the wheel is in a retracted or lowered state; the vertical mounting base has limiting blocks on both sides, and each wheel carrier has a support portion for positioning; in the retracted state, the support portion of the wheel carrier does not abut against the limiting blocks, and in the lowered state, the support portion of the wheel carrier abuts upward against the limiting blocks.

[0006] Optionally, when the wheel is in a falling state, the line connecting the rotation center of the eccentric shaft and the center of the wheel axle forms an angle with the vertical direction.

[0007] Optionally, it also includes a crank and a locking spring; the crank is arc-shaped with an extended arm at its head, the head of the crank is hinged 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 extended arm of the crank; the crank is provided with an arc-shaped groove, the wheel carrier is provided with a locking arm, and the locking arms of the two wheel carriers are connected by a pin passing through the arc-shaped groove, the pin slidingly engaging with the arc-shaped groove.

[0008] Optionally, the upper end of the arc-shaped groove is curved towards the center.

[0009] Optionally, the drive arm and locking arm of each wheel bearing member are located on both sides of the wheel axle.

[0010] Optionally, the drive arm and the locking arm are generally located on the same straight line; or, the drive arm and the locking arm have an angle between them.

[0011] Optionally, the bottom of the limiting block has a horizontal limiting plane, and the support part of the wheel carrier has a support plane on its outer edge. When the wheel is in a falling state, the support plane of the wheel carrier abuts against the limiting plane of the limiting block.

[0012] Optionally, the support portion of the wheel carrier is a part that extends radially with the wheel axle as the center, and the eccentric shaft connects the support portions of the two wheel carriers laterally.

[0013] Optionally, the cylinder body 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 chamber of the hydraulic cylinder is locked, and when the wheel is lowered, the hydraulic cylinder is in a pressure-holding state.

[0014] To achieve the other objective mentioned above, the present invention provides a maglev train, including a car body and a rescue device disposed at the bottom of the car body. The rescue device is a maglev train rescue wheel device as described in any of the above claims. Every two maglev train rescue wheel devices are arranged in a mirror-symmetrical manner at the bottom of the car body, and the hydraulic cylinders of the two maglev train rescue wheel devices are distributed in an inverted "V" shape.

[0015] The maglev train rescue wheel device provided by this invention mainly consists of a mounting base, wheels, hydraulic cylinders, and an eccentric shaft. The wheel lifting mechanism formed by these components allows the wheels to be lowered and the vehicle lifted before rescue. During the rescue operation, the wheels can mechanically lock and support the vehicle. After the rescue is completed, the wheels can be retracted and locked. This device enables rapid rescue when a maglev vehicle malfunctions, offering advantages such as economy, practicality, lightweight design, modularity, and high reliability. Furthermore, the eccentric shaft's structural design features a large lever arm, facilitating the lifting and lowering process and effectively reducing the difficulty of designing and selecting hydraulic components.

[0016] The maglev train provided by this invention is equipped with the maglev train rescue wheel device. Since the maglev train rescue wheel device has the above-mentioned technical effects, the maglev train equipped with the maglev train rescue wheel device should also have the corresponding technical effects. Attached Figure Description

[0017] Figure 1 This is an axonometric view of a maglev train rescue wheel device provided in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 The image shows the axle side view of the maglev train rescue wheel device after two wheels have been removed.

[0019] Figure 3 for Figure 2 The front view of the maglev train rescue wheel device in its retracted state is shown.

[0020] Figure 4 for Figure 2 The front view of the maglev train rescue wheel device in the falling state.

[0021] In the picture:

[0022] 1. Wheel 2. Wheel bearing component 21. Wheel axle 22. Drive arm 23. Support 24. Locking arm 231. Support plane 3. Mounting seat 31. Horizontal mounting seat 32. Vertical mounting seat 321. Limiting block 4. Hydraulic cylinder 5. Eccentric shaft 6. Crank 61. Extended arm 62. Arc-shaped groove 7. Locking spring Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In this document, terms such as "upper," "lower," "inner," and "outer" are established based on the positional relationships shown in the accompanying drawings. Depending on the drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection. Moreover, relational terms such as "first" and "second" are only used to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0025] like Figure 1 , Figure 2 As shown, in one specific embodiment, the maglev train rescue wheel device provided by the present invention mainly consists of components such as a wheel 1, a wheel bearing 2, a mounting base 3, a hydraulic cylinder 4, an eccentric shaft 5, a crank 6, and a locking spring 7.

[0026] Mounting base 3 is divided into two parts: horizontal mounting base 31 and vertical mounting base 32. It is used to provide a mounting base for wheel bearing 2, eccentric shaft 5, hydraulic cylinder 4, crank 6 and locking spring 7. The vertical mounting base 32 is located below the horizontal mounting base 31 and connected to the horizontal mounting base 31. The side projection of the vertical mounting base 32 is roughly rectangular and has holes for weight reduction.

[0027] The wheel carrier 2 is mainly used to install the wheel 1 and provides torque for the wheel 1 during the lowering and retraction process under the action of the hydraulic cylinder 4. The wheel carrier 2 is located on both sides of the vertical mounting base 32 and is rotatably installed on the vertical mounting base 32 through the eccentric shaft 5. The vertical mounting base 32 is provided with a split-connected lower cover plate. The body of the vertical mounting base 32 is provided with a downward-opening semi-circular shaft hole at the bottom, and the top of the lower cover plate is provided with an upward-opening semi-circular shaft hole. After the two are connected, the eccentric shaft 4 is rotatably installed on the vertical mounting base 32 in the form of a clamping shaft. A bearing is provided between the eccentric shaft 5 and the shaft hole to ensure the stable and reliable rotation of the wheel carrier 2.

[0028] Each wheel carrier 2 has a laterally extending wheel axle 21 on its outer side, and a wheel 1 is mounted on the outer side of the wheel axle 21. The two wheels 1 mounted on the two wheel carriers 2 have their wheel axles on the same axis, but they are not transverse through axles. They are separated by a vertical mounting seat 32, forming two separate half-axles. This ensures that the wheel axle 21 will not interfere with the vertical mounting seat 32 during the retraction and descent of the wheel 1.

[0029] The wheel carrier 2 is equipped with a drive arm 22 and a hydraulic cylinder 4 is arranged obliquely. One end of the cylinder is hinged to the horizontal mounting base 31 and the other end is hinged to the drive arm 22 of the wheel carrier 2, so as to drive the wheel carrier 2 and the wheel 1 to rotate around the eccentric shaft 5, thereby putting the wheel 1 in a retracted or lowered state.

[0030] Limiting blocks 321 are provided on both sides of the vertical mounting base 32. The top of the limiting block 321 is arc-shaped and the bottom of the limiting block 321 has a horizontal limiting plane. Each wheel carrier 2 is provided with a support part 23 for positioning. The support part 23 is a part that extends radially with the wheel axle 21 as the center. The eccentric rotating shaft 5 is located between the support parts 23 of the two wheel carriers 2 and connects the two support parts 23 laterally. The support part 23 of the wheel carrier 2 has a support plane 231 on its outer edge. When the wheel is retracted, the support plane 231 of the wheel carrier 2 rotates to a position that avoids the limiting block 321 and does not abut against the limiting plane of the limiting block 321. When the wheel 1 is in the falling state, the support plane 231 of the wheel carrier 2 rotates to a position corresponding to the limiting block 321 and abuts against the limiting plane of the limiting block 321 upward. By designing a limiting block 321 on the vertical mounting seat 32, which cooperates with the support part 23 of the wheel bearing 2, it can play a role in transferring load and keeping the wheel 1 in a falling state during the rescue process.

[0031] When wheel 1 is in the falling state, the line connecting the rotation center of the eccentric shaft 5 and the center of the wheel axle 21 forms an angle θ with the vertical direction. In this way, after the rescue device completes the lifting action, the wheel of the rescue device can be mechanically locked during the rescue process, ensuring that wheel 1 will not be lifted accidentally.

[0032] Furthermore, a crank 6 and a locking spring 7 are provided. The crank 6 is located between the locking spring 7 and the vertical mounting base 32, and is hinged to the locking spring 3 and the vertical mounting base 32 respectively.

[0033] Specifically, the crank 6 is arc-shaped with an extension arm 61 at its head. The vertical mounting base 32 has a receiving groove on its side adjacent to the crank 6. The head of the crank 6 extends into the receiving groove and is hinged to the vertical mounting base 32. The locking spring 7 is arranged vertically, with its upper end connected to the horizontal mounting base 31 and its lower end connected to the extension arm 61 of the crank 6. The crank 6 has an arc-shaped slide groove 62. The wheel bearing 2 has a locking arm 24. The locking arms 24 of the two wheel bearings 2 on both sides of the crank 6 are connected by a pin. The pin is located in the arc-shaped slide groove 62 of the crank 6 and slides in cooperation with the arc-shaped slide groove 62, so that it can slide along the arc-shaped trajectory in the arc-shaped slide groove 62.

[0034] By adding crank 6 and locking spring 7, it is possible to ensure that the locking force when wheel 1 is retracted is large enough, and that the interaction force between wheel bearing 2 and crank 6 is small after wheel 1 overcomes the locking force, which effectively increases the service life of the components.

[0035] Furthermore, the upper end of the arc-shaped groove 62 can be designed to be curved towards the center. When the wheel 1 is retracted, the pin between the locking arms 24 can enter the curved head of the arc-shaped groove 62, thereby locking the rescue wheel when it is retracted through the arc-shaped groove.

[0036] Each wheel carrier 2 has a drive arm 22 and a locking arm 24 located on opposite sides of the wheel axle 21. This means that the extension lines of the drive arm 22 and the locking arm 24 in the longitudinal direction both pass through the center of the wheel axle 21. In this embodiment, the drive arm 22 and the locking arm 24 are generally on the same straight line, roughly in a straight line shape. When the drive arm 22 swings downwards under the drive of the hydraulic cylinder 4, the locking arm 24 swings upwards; conversely, when the drive arm 22 swings upwards under the drive of the hydraulic cylinder 4, the locking arm 24 swings downwards.

[0037] The cylinder body of hydraulic cylinder 4 is hinged to the horizontal mounting base 31, and the piston rod of hydraulic cylinder 4 is hinged to the drive arm 22 of wheel bearing component 2. When wheel 1 is retracted, the oil in the rodless chamber of hydraulic cylinder 4 is locked, and locking is achieved by the oil locking in hydraulic cylinder 4. When wheel 1 is lowered, hydraulic cylinder 4 is in a pressure-holding state. The pressure-holding function of hydraulic cylinder 4 can avoid the risk of mechanical self-locking failure due to vibration when wheel 1 passes through the track joint.

[0038] In addition, wheel 1 is an elastic wheel. When the elastic wheel passes through the track joint, it can reduce the impact force between the wheel and the rail, ensuring the reliability and service life of the overall structure.

[0039] like Figure 3 , Figure 4 As shown, when the vehicle malfunctions and requires rescue, the hydraulic cylinder 4 retracts, the drive arm 22 of the wheel carrier 2 swings upward, pulling the wheel carrier 2 to rotate around the eccentric shaft 5, and the locking arm 24 of the wheel carrier 2 swings downward, thereby overcoming the locking force of the spring 7 and the crank 6, causing the wheel carrier 2 and the wheel 1 to fall.

[0040] Once wheel 1 contacts the rail surface, it will replace the support skid on the suspension frame to support the vehicle, and under the continuous pulling force of hydraulic cylinder 4, it will gradually lift the vehicle. When the support plane 231 of wheel bearing component 2 is in complete contact with the limiting plane of limiting block 321, the entire vehicle lifting action is completed.

[0041] After the rescue is completed, the wheel carrier 2 and wheel 1 return to the locked position under the thrust of the hydraulic cylinder 4. At this time, the oil in the rodless chamber of the hydraulic cylinder 4 is locked, realizing the retraction of the wheel carrier 2 and wheel 1. When the oil in the rodless chamber leaks, the wheel carrier 3 and wheel 1 are locked by the locking spring 7 and crank 6. The design of the locking spring 7 and crank 6 can effectively prevent wheel 1 from falling, improving the reliability of stable locking after wheel 1 is retracted.

[0042] The structure of the wheel bearing component 2 can form a large lever arm during the lowering and retraction of the rescue wheel, thereby effectively reducing the load on the hydraulic cylinder 4 during operation, facilitating the selection and design of the hydraulic cylinder 4. Moreover, after completing the retraction action, it can achieve self-locking by its own mechanical structure, and the pressure holding function of the hydraulic cylinder 4 enhances its self-locking effect, effectively ensuring that the wheel 1 can pass smoothly through the rail gap.

[0043] The above embodiments are merely preferred embodiments of the present invention and are not limited thereto. Based on these, targeted adjustments can be made according to actual needs to obtain different implementation methods. For example, the drive arm 22 and the locking arm 24 may have an included angle, or the wheel carrier 2 may be designed into other suitable shapes, etc. Since there are many possible implementation methods, they will not be listed here.

[0044] This invention aims to enable rapid rescue of high-speed maglev vehicles. Following the design principles of economy, practicality, lightweight design, modularity, and high reliability, it provides a rescue wheel device suitable for rescue operations of high-speed maglev vehicles. This rescue wheel device features a unique mounting base, wheel support components, wheels, hydraulic cylinders, eccentric shafts, cranks, and locking springs. Through the mechanism formed by these components, it achieves stable vehicle lifting, wheel self-locking after lifting, and wheel retraction and locking functions. Based on these functions, rapid rescue is possible after vehicle malfunction.

[0045] In addition to the aforementioned maglev train rescue wheel device, the present invention also provides a maglev train having a car body and a rescue device located at the bottom of the car body. The rescue device is the maglev train rescue wheel device described above. Every two maglev train rescue wheel devices are arranged in a mirror-symmetrical manner at the bottom of the car body. The hydraulic cylinders 4 of the two maglev train rescue wheel devices are distributed in an inverted "V" shape. For the remaining structure of the maglev train, please refer to the prior art, which will not be repeated here.

[0046] The foregoing has provided a detailed description of the maglev train rescue wheel device and the maglev train provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention, and the descriptions of the embodiments above are merely for the purpose of helping to understand the core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A maglev train rescue wheel device, characterized by, The system includes a mounting base (3), wheel carriers (2), and a hydraulic cylinder (4). The mounting base (3) includes a horizontal mounting base (31) and a vertical mounting base (32), with the vertical mounting base (32) located below and connected to the horizontal mounting base (31). The wheel carriers (2) are located on both sides of the vertical mounting base (32) and are rotatably mounted on the vertical mounting base (32) via an eccentric shaft (5). Each wheel carrier (2) has a wheel (1) mounted on its outer side via a wheel axle (21). The hydraulic cylinder (4) is arranged obliquely, with one end hinged to the horizontal mounting base (31). The other end is hinged to the drive arm (22) of the wheel carrier (2) to drive the wheel carrier (2) and the wheel (1) to rotate around the eccentric shaft (5) together, so that the wheel (1) is in a retracted or lowered state; the vertical mounting base (32) is provided with limiting blocks (321) on both sides, and each wheel carrier (2) is provided with a support part (23) for positioning. When the wheel (1) is retracted, the support part (23) of the wheel carrier (2) does not abut against the limiting block (321). When the wheel is lowered, the support part (2) of the wheel carrier (2) abuts against the limiting block (321) upward. When the wheel (1) is in a falling state, the line connecting the rotation center of the eccentric shaft (5) and the center of the wheel axle (21) forms an angle with the vertical direction to achieve mechanical self-locking; it also includes a crank (6) and a locking spring (7); the crank (6) is arc-shaped with an extension arm (61) at the head, the head of the crank (6) is hinged to the vertical mounting seat (32), the upper end of the locking spring (7) is connected to the horizontal mounting seat (31), and the lower end of the locking spring (7) is connected to the extension arm (61) of the crank (6). The crank (6) is provided with an arc-shaped groove (62), and the wheel carrier (2) is provided with a locking arm (24). The locking arms (24) of the two wheel carriers (2) are connected by a pin that passes through the arc-shaped groove (62). The pin slides in cooperation with the arc-shaped groove (62). The upper end of the arc-shaped groove (62) has a shape that bends towards the center. When the wheel (1) is retracted, the pin between the locking arms (24) can enter the bent head of the arc-shaped groove (62), thereby locking the rescue wheel when it is retracted through the arc-shaped groove.

2. The maglev train rescue wheel apparatus according to claim 1, characterized in that, The upper end of the arc-shaped groove (62) is curved towards the center.

3. The maglev train rescue wheel apparatus according to claim 1, characterized in that, The drive arm (22) and locking arm (24) of each wheel bearing member (2) are located on both sides of the wheel axle (21).

4. The maglev train rescue wheel apparatus according to claim 3, characterized in that, The drive arm (22) and the locking arm (24) are generally on the same straight line; or, the drive arm (22) and the locking arm (24) have an angle between them.

5. The maglev train rescue wheel apparatus according to claim 1, wherein, The bottom of the limiting block (321) has a horizontal limiting plane, and the support part (23) of the wheel carrier (2) has a support plane (231) on its outer edge. When the wheel (1) is in the falling state, the support plane (231) of the wheel carrier (2) abuts against the limiting plane of the limiting block (321) upward.

6. The maglev train rescue wheel apparatus according to claim 5, characterized in that, The support part (23) of the wheel carrier (2) is a part that extends radially with the wheel axle (21) as the center, and the eccentric shaft (5) connects the two support parts (23) of the wheel carrier (2) laterally.

7. The maglev train rescue wheel device according to any one of claims 1 to 6, characterized in that, The cylinder body 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). When the wheel (1) is retracted, the oil in the rodless chamber of the hydraulic cylinder (4) is locked. When the wheel (1) is lowered, the hydraulic cylinder (4) is in a pressure-holding state.

8. A maglev train, comprising a car body and a rescue device disposed at the bottom of the car body, characterized in that, The rescue device is the maglev train rescue wheel device according to any one of claims 1 to 7. Each pair of maglev train rescue wheel devices is arranged in a mirror-symmetrical manner at the bottom of the vehicle body, and the hydraulic cylinders (4) of the two maglev train rescue wheel devices are distributed in an inverted "V" shape.

Images