Movable reaction rail maintenance mechanism and maintenance method for embedded maglev vehicle

Abstract

The invention discloses a movable reaction rail maintenance mechanism for an embedded maglev vehicle and a maintenance method thereof, belonging to the technical field of embedded maglev vehicles. The maintenance mechanism comprises: a pair of reaction rails arranged on both sides of the embedded maglev vehicle along the running direction of the embedded maglev vehicle; a driving part for driving the pair of reaction rails to close or separate them from each other; wherein the reaction rails are configured to cooperate with the vehicle running part of the embedded maglev vehicle in a closed state to assist the embedded maglev vehicle in suspended running, and then use the vehicle operation control system to make the vehicle land steadily on the power supply rail; when each reaction rail is away from the embedded maglev vehicle, necessary maintenance space is provided for maintenance personnel and equipment, so as to achieve the purpose of simple operation and low safety risk in the entire maintenance process, thereby greatly improving the efficiency and safety of maintenance.

Description

Technical Field

[0001] The present invention belongs to the technical field of embedded maglev vehicles, and in particular, relates to a movable reaction rail maintenance mechanism and a maintenance method of an embedded maglev vehicle. Background Art

[0002] Low- and medium-speed maglev is a new technology with independent intellectual property rights in China and is also the most advanced technology in urban rail transit. It has the advantages of environmental protection, high safety, strong climbing ability, small turning radius and low construction cost. It is suitable for urban areas, short-distance cities and tourist attractions, and can replace light rail and subway.

[0003] The embedded medium and low-speed maglev system can cover the light rail, subway, urban area, short-distance intercity, tourist rail and other markets. It has outstanding life cycle cost advantages and is the development direction of future urban rail transit. Its advantages are: (1) no derailment risk, no brake failure risk and short emergency braking distance; (2) no mechanical rotating parts and high power redundancy; (3) low vibration, low noise and smooth operation; (4) beautiful appearance, low vibration and noise, low electromagnetic radiation and high energy utilization; (5) strong acceleration ability, high running speed, short travel time and short construction period; (6) climbing ability of 10%, minimum turning radius of 45m and small system section.

[0004] Maglev vehicles need to be regularly maintained during their normal operation cycle. Currently, in order for maglev vehicles to reach designated maintenance positions, high-power drive, braking, hydraulic lifting and other related mechanisms are often required. However, this set of maintenance mechanisms is relatively complex and there are great safety risks during application, resulting in the efficiency and safety of maintenance not being reliably guaranteed. Summary of the invention

[0005] In view of this, in order to solve the above-mentioned problems existing in the prior art, the object of the present invention is to provide a movable reaction rail maintenance mechanism for an embedded maglev vehicle and a maintenance method thereof to achieve the purpose of improving maintenance efficiency and maintenance safety.

[0006] The technical solution adopted by the present invention is: a movable reaction rail maintenance mechanism for an embedded maglev vehicle, the maintenance mechanism comprising:

[0007] A pair of reaction rails arranged on both sides of the embedded maglev vehicle along the running direction of the embedded maglev vehicle;

[0008] A driving unit for driving the pair of reaction rails to close or separate them from each other;

[0009] Among them, the reaction rail is constructed to be able to work together with the vehicle running part of the embedded maglev vehicle in a closed state to assist the embedded maglev vehicle in suspended running. Compared with the existing technology, the reaction rail and the driving system of the vehicle running part can realize the suspension of the embedded maglev vehicle, and can drive the embedded maglev vehicle to a suspended maintenance position without setting up a corresponding lifting mechanism, with high efficiency and reliable safety guarantee.

[0010] Furthermore, the driving unit includes a main body arranged along the running direction of the embedded maglev vehicle and on both sides of the embedded maglev vehicle, and the reaction rail is installed on each of the main bodies respectively, so that the main body serves as a bearing body of the reaction rail.

[0011] Furthermore, each of the main bodies is slidably arranged in a direction perpendicular to the traveling direction of the embedded maglev vehicle and each of the main bodies is respectively provided with a driving component for driving its sliding movement. The driving component provides power for the displacement movement of each main body, thereby realizing the displacement movement of each of the reaction rails. At the same time, the main body is displaced in a direction perpendicular to the traveling direction of the embedded maglev vehicle, and its displacement path is simple and easy to implement.

[0012] Furthermore, the main bodies on both sides are arranged symmetrically relative to the traveling direction of the embedded maglev vehicle, and the main bodies on both sides are driven by the driving components to perform synchronous closing movement or synchronous separation movement, so as to achieve synchronization and consistency of the main bodies on both sides during movement.

[0013] Furthermore, a plurality of the driving assemblies are provided on the same main body and the driving assemblies move synchronously to ensure the stability of the single-sided main body during the displacement movement.

[0014] Furthermore, the driving assembly includes a driving device and a driving rack. The driving device is installed on the main body and is connected to a gear box. The gear box is connected to a gear, and the gear is meshed with the driving rack to ensure the accuracy and reliability of the main body during movement through the cooperation between the gear and the driving rack.

[0015] Furthermore, the main body slides in a direction perpendicular to the traveling direction of the embedded maglev vehicle through the sliding assembly, so as to achieve displacement of the main body through the sliding assembly and ensure the stability of the main body during displacement.

[0016] Furthermore, a plurality of the sliding components are provided on the same main body and the sliding components are arranged in parallel to prevent the main body on one side from being offset or unstable during movement.

[0017] Furthermore, the sliding assembly includes a slider and a guide rail. The slider is installed on the main body and slidably assembled on the guide rail. The structure is simple and can ensure the stability of the main body during sliding movement.

[0018] Furthermore, a power supply rail is laid in the running direction of the embedded maglev vehicle, and the vehicle running part of the embedded maglev vehicle is powered by the power supply rail, and the power supply rail is parallel to the reaction rail in the closed state, so that the embedded maglev vehicle can be moved to a maintenance position with the cooperation of the reaction rail and the power supply rail, and the embedded maglev vehicle can be supported by the power supply rail at the maintenance position.

[0019] Furthermore, the main body is in a right-angle Z shape, one arm of the main body is provided with the reaction rail, the other arm slides through a sliding assembly and reinforcing ribs are provided between the two arms to ensure that the main body has sufficient stability in structural strength.

[0020] Furthermore, the main body is formed by welding a plurality of square steel structural members to each other, so as to achieve a lightweight design of the overall structure.

[0021] The present invention also provides a method for maintaining a movable reaction rail of an embedded maglev vehicle, which is applied to the movable reaction rail maintenance mechanism of the embedded maglev vehicle as described above, and the method comprises:

[0022] S1: Arrange the installed embedded maglev vehicle movable reaction rail maintenance mechanism at the maintenance position;

[0023] S2: starting the driving part and moving the reaction rail to the working position through the driving part;

[0024] S3: The reaction rail and the power supply rail work together to provide a force to the vehicle running part of the maglev vehicle, and the maglev vehicle is suspended and driven to the maintenance position;

[0025] S4: using the operation and control system of the maglev vehicle to make the maglev vehicle land on the power supply rail, and using the driving unit to move the reaction rail away from the working position until the maintenance is completed;

[0026] S5: After the maintenance is completed, the reaction rail is moved to the working position through the driving unit, and the maglev vehicle enters the track for operation through its operation control system.

[0027] The beneficial effects of the present invention are:

[0028] 1. The movable reaction rail maintenance mechanism for the embedded maglev vehicle provided by the present invention causes the reaction rail to be displaced through the driving part, and then adjusts the reaction rail to the corresponding position of the vehicle running part of the embedded maglev vehicle. Under the interaction between the reaction rail and the power supply rail, the suspension of the embedded maglev vehicle is realized, and the embedded maglev vehicle can be adjusted to an appropriate position under the action of the vehicle running part, and the vehicle operation control system is used to make the vehicle land smoothly on the power supply rail; in the maintenance working condition, the reaction rail is away from the embedded maglev vehicle under the action of the driving part, providing the necessary maintenance space for maintenance personnel and equipment, and the whole maintenance process is simple to operate and has low safety risks, which greatly improves the efficiency and safety of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the assembly structure of the main body in the movable reaction rail type maintenance mechanism of the embedded maglev vehicle provided by the present invention;

[0030] Figure 2 It is a schematic diagram of the assembly structure of the driving component in the movable reaction rail maintenance mechanism of the embedded maglev vehicle provided by the present invention;

[0031] Figure 3 It is a schematic diagram of the overall structure of the movable reaction rail type maintenance mechanism of the embedded maglev vehicle provided by the present invention in a closed state;

[0032] Figure 4 It is a schematic diagram of the overall structure of the movable reaction rail type maintenance mechanism of the embedded maglev vehicle provided by the present invention in the open state;

[0033] Figure 5 yes Figure 1 A local enlarged schematic diagram at point A;

[0034] Figure 6 It is a structural schematic diagram of the movable reaction rail type maintenance mechanism of the embedded magnetic levitation vehicle provided by the present invention in Example 2;

[0035] The following are marked in the attached figure:

[0036] 1-main body; 2-reaction rail; 3-driving device; 4-slider; 5-guide rail; 6-driving rack; 7-gear; 8-power supply rail; 9-vehicle running part, 10-embedded maglev vehicle. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0040] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances; the drawings in the embodiments are used to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Example 1

[0042] In this embodiment, a movable reaction rail maintenance mechanism for an embedded maglev vehicle is specifically provided to reduce the maintenance safety risk of the embedded maglev vehicle and, at the same time, improve the efficiency and safety of maintenance.

[0043] like Figure 1 As shown, it includes two main bodies 1 and a reaction rail 2 arranged on each main body 1. The main body 1 is mainly formed by welding a plurality of square steel structural members to each other to achieve a lightweight design of the main body 1. Of course, if lightweight design is not taken into consideration, a solid main body 1 may also be used, which is heavier and more expensive.

[0044] The main body 1 is designed to be in a right-angled Z shape, and one arm of the main body 1 is provided with the reaction rail 2, and the other arm is provided with the sliding assembly, and the sliding assembly is used to enable the main body 1 to slide freely in a direction perpendicular to the running direction of the embedded maglev vehicle 10, and a reinforcing rib is provided between the two arms to ensure the structural strength and reliability of the main body 1.

[0045] In order to achieve the synchronization of the maintenance mechanism during operation, the two main bodies 1 are arranged on both sides of the running direction of the embedded maglev vehicle 10 and the two main bodies 1 are arranged symmetrically relative to the running direction of the embedded maglev vehicle 10. Since each of the main bodies 1 is arranged to slide perpendicular to the running direction of the embedded maglev vehicle 10, in order to achieve the synchronization of the movement of the maintenance mechanism when opening or closing, each of the main bodies 1 performs a synchronous closing movement or a synchronous separation movement under the action of its own driving assembly, and then, when opening or closing, the main bodies 1 on both sides perform synchronous movement. As for the synchronous movement of the driving assembly corresponding to each main body 1 (here it means: the speed of the driving device 3 in the driving assembly on different sides is synchronized but the direction is opposite), it can be achieved by applying a conventional control circuit on the market, which will not be repeated here.

[0046] Each of the main bodies 1 is respectively equipped with a driving assembly for driving its sliding motion, and the driving assembly is used to displace the reaction rail 2 on the main body 1 to the top of the vehicle running part 9 of the embedded maglev vehicle. When the reaction rail 2 is displaced to the top of the vehicle running part 9, since the maglev driving system (including a linear motor and a magnet unit for suspension arranged on the upper side of the vehicle running part 9) is arranged on the upper side of the vehicle running part 9, the driving system acts on the reaction rail 2 to realize the suspension of the embedded maglev vehicle 10, and can drive the embedded maglev vehicle 10 to suspend and drive to the maintenance position; during the whole process, the power supply rail 8 is used to supply power to the embedded maglev vehicle 10, and when the embedded maglev vehicle 10 is in a suspended state, the power supply rail 8 and the embedded maglev vehicle 10 are connected through the power receiving shoe.

[0047] In order to ensure the reliability and stability of each main body 1 during movement, four driving assemblies are provided on the main body 1 on the same side and each driving assembly moves synchronously (here, it means that the driving devices 3 in the driving assemblies on the same side have the same speed and the same direction), and the number of driving assemblies is determined according to the size of the main body 1. In this embodiment, a design method of a driving assembly is provided, such as Figure 2 As shown, the driving assembly includes a driving device 3 and a driving rack 6. The driving device 3 is installed on the main body 1 and is connected to a gear box. The gear box is connected to a gear 7. The gear 7 is meshed with the driving rack 6. The driving rack 6 is fixedly installed. The driving device 3 can be a driving motor or a hydraulic motor. Of course, the driving assembly is not limited to the above design, and can also be implemented by a worm gear mechanism, which will not be repeated here.

[0048] Since the main body 1 slides and moves in a direction perpendicular to the running direction of the embedded maglev vehicle 10 through the sliding assembly, in this embodiment, in order to prevent the main body 1 from being offset during the sliding process, a plurality of sliding assemblies are provided on the main body 1 on the same side and each sliding assembly is arranged evenly and in parallel. Under the joint constraint of each sliding assembly, the movement reliability of the main body 1 can be ensured. In this embodiment, a design method of a sliding assembly is provided as follows: the sliding assembly includes a slider 4 and a guide rail 5, the slider is installed on the main body 1 and slidably assembled on the guide rail 5, the guide rail 5 is also fixedly installed and the guide rail 5 is used to carry the load of the embedded maglev vehicle 10 and the maintenance mechanism, and to ensure the smooth movement of the maintenance mechanism. Among them, the slider 4 can be set as a nested structure, and the slider 4 can be movably assembled on the guide rail 5; a pulley is also designed on the slider 4, and the slider is slidably assembled on the guide rail 5 through the pulley; there is no limit to the form design of the sliding assembly, and it can be adaptively optimized according to the actual application.

[0049] It also includes a power supply rail 8 laid on the track beam, which is arranged in the running direction of the embedded maglev vehicle 10, and the vehicle running part 9 of the embedded maglev vehicle is located between the reaction rail 2 and the power supply rail 8. After the vehicle arrives at the maintenance position, the vehicle operation control system is used to make the vehicle land smoothly on the power supply rail 8. At the same time, the power supply rail 8 is used to supply power for the normal operation of the embedded maglev vehicle 10.

[0050] In order to achieve stable and reliable installation of the main body 1, bases are arranged on both sides of the track beam, and a plurality of grooves are opened on the base along a direction perpendicular to the running direction of the embedded maglev vehicle 10. Each of the driving racks 6 is fixedly arranged in each groove, and each of the guide rails 5 is also fixedly arranged on the base, so that when the main body 1 is slid onto the guide rail 5, the gear 7 of the driving device 3 in the driving assembly is also engaged with the driving rack 6.

[0051] Based on the above provided embedded maglev vehicle movable reaction rail maintenance mechanism, its working principle is as follows:

[0052] The working state is divided into closed state (such as Figure 3 ) and the open state (as shown Figure 4 shown).

[0053] Under the action of the driving assembly, the main bodies 1 on both sides of the maintenance mechanism move together until they are completely switched to the closed state. At this time, the reaction rail 2 reaches the working position (such as Figure 5As shown in the figure, it works together with the power supply rail 8 outside the maintenance mechanism to provide guidance and magnetic levitation force to the running part of the embedded maglev vehicle, so that the embedded maglev vehicle 10 can be suspended and driven to the maintenance position. When the embedded maglev vehicle 10 has arrived at the maintenance position, the embedded maglev vehicle 10 operation control system can be used to make the embedded maglev vehicle 10 land smoothly on the power supply rail 8. Subsequently, under the action of the driving component, the main body 1 on both sides of the maintenance mechanism moves apart to switch from the closed position to the open state, providing the necessary maintenance space for maintenance personnel and equipment.

[0054] After the maintenance is completed, the maintenance mechanism changes from the open state to the closed state again. Under the action of the operation control system of the embedded maglev vehicle 10, the embedded maglev vehicle 10 can be suspended again and enter the track for normal operation.

[0055] Example 2

[0056] In the first embodiment, each of the main bodies 1 slides in a direction perpendicular to the travel direction of the embedded maglev vehicle 10 under the action of the driving assembly. In practical applications, in order to accommodate the reserved space in some special occasions, the displacement direction of each of the main bodies 1 needs to be improved. In the present embodiment, Figure 6 As shown, another solution is provided as follows:

[0057] Under the action of the driving assembly, the included angle between the sliding displacement direction of each main body 1 and the running direction of the embedded magnetic levitation vehicle 10 is θ, and θ is not equal to 90°, for example, θ can be set to 30°, 45° or 60°.

[0058] Example 3

[0059] In Embodiment 1 and Embodiment 2, the design of the driving part mainly includes: a reaction rail, a main body carrying the reaction rail, and a driving assembly driving the main body to move; in this embodiment, another design scheme of the driving part is provided, which is as follows:

[0060] The driving part includes: a reaction rail, a bearing plate for bearing the reaction rail, and a hydraulic cylinder driving the bearing plate. The bearing plates are arranged on both sides of the traveling direction of the embedded maglev vehicle, and each bearing plate is evenly connected with a plurality of hydraulic cylinders, so that the bearing plate can be pushed into or pushed out of a specified position through the synchronous action of each hydraulic cylinder, and the reaction rail on the bearing plate can also be moved to the top of the vehicle running part. The driving part provided in this embodiment has a simpler structure, but its stability and bearing capacity are inferior to those in Embodiment 1 and Embodiment 2, and can be used for maglev vehicles with lighter weight.

[0061] Example 4

[0062] In this embodiment, a movable reaction rail maintenance method for an embedded maglev vehicle is provided, which is applied to the movable reaction rail maintenance mechanism for an embedded maglev vehicle as described in the above-mentioned embodiments 1 to 3. The method comprises:

[0063] S1: Arrange the installed movable reaction rail maintenance mechanism of the embedded maglev vehicle at the maintenance position, that is, arrange a main body on both sides of the power supply rail, the main body is equipped with a driving component for driving the sliding thereof and a reaction rail is installed on the main body; wherein the maintenance position refers to a working area where maintenance operations can be performed on the embedded maglev vehicle;

[0064] S2: Start the driving assembly and use the driving assembly to move the reaction rails on both sides to the working position, that is, to the top of the vehicle running part and corresponding to the power supply rail carrying the maglev vehicle; wherein the working position is the position where the reaction rail can work together with the vehicle running part and provide magnetic levitation force for the embedded maglev vehicle and guide it to levitate and run.

[0065] S3: The reaction rail and the power supply rail work together to supply power to the maglev vehicle, provide magnetic levitation and guiding force to the vehicle running part of the maglev vehicle, and make the maglev vehicle levitate and travel to the maintenance position;

[0066] S4: The maglev vehicle is placed on the power supply rail by using the operation and control system of the maglev vehicle, and the reaction rail is moved away from the working position by the driving unit, so as to provide necessary space for the maintenance personnel and maintenance equipment to carry out normal maintenance work until the maintenance is completed;

[0067] S5: After the maintenance is completed, the main body is driven by the driving assembly, so that the reaction rail on the main body is moved to the working position, and the maglev vehicle enters the track (the part of the track that is not in the maintenance position) through its operation control system for operation.

[0068] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A movable reaction rail maintenance mechanism for an embedded maglev vehicle, characterized in that: The maintenance organizations include: A pair of reaction rails arranged on both sides of the embedded maglev vehicle along the running direction of the embedded maglev vehicle; A driving unit for driving the pair of reaction rails to synchronously close or separate them from each other; The driving unit includes a main body arranged along the running direction of the embedded maglev vehicle and on both sides of the embedded maglev vehicle, each of the main bodies is respectively installed with the reaction rail; each of the main bodies is slidably arranged along a direction perpendicular to the running direction of the embedded maglev vehicle; A power supply rail is laid in the running direction of the embedded maglev vehicle, and power is supplied to the vehicle running part of the embedded maglev vehicle through the power supply rail; Among them, the reaction rail is constructed to be able to cooperate with the vehicle running part of the embedded maglev vehicle in a closed state to assist the embedded maglev vehicle in suspended running. Under the interaction between the reaction rail and the power supply rail, the embedded maglev vehicle is suspended, and under the action of the vehicle running part, the embedded maglev vehicle can be adjusted to an appropriate position.

2. The movable reaction rail maintenance mechanism for an embedded maglev vehicle according to claim 1 is characterized in that: Each of the main bodies is respectively equipped with a driving assembly for driving its sliding motion.

3. The movable reaction rail maintenance mechanism for an embedded maglev vehicle according to claim 1 is characterized in that: The main bodies on both sides are arranged symmetrically relative to the running direction of the embedded magnetic levitation vehicle, and the main bodies on both sides are driven by the driving components to perform synchronous closing movement or synchronous separation movement.

4. The movable reaction rail maintenance mechanism for an embedded maglev vehicle according to claim 2 or 3, characterized in that: A plurality of driving components are arranged on the same main body and each driving component moves synchronously.

5. The movable reaction rail maintenance mechanism for an embedded maglev vehicle according to claim 4 is characterized in that: The driving assembly comprises a driving device and a driving rack. The driving device is mounted on the main body and is connected to a gear box. The gear box is connected to a gear, and the gear is meshed with the driving rack.

6. The movable reaction rail maintenance mechanism for an embedded maglev vehicle according to claim 2, characterized in that: The main body slides in a direction perpendicular to the running direction of the embedded magnetic levitation vehicle through the sliding assembly.

7. The movable reaction rail maintenance mechanism for an embedded maglev vehicle according to claim 6, characterized in that: A plurality of sliding components are arranged on the same main body and the sliding components are arranged in parallel.

8. The movable reaction rail maintenance mechanism for an embedded maglev vehicle according to claim 7, characterized in that: The sliding assembly comprises a sliding block and a guide rail. The sliding block is installed on the main body and slidably assembled on the guide rail.

9. The movable reaction rail maintenance mechanism for an embedded maglev vehicle according to claim 1, characterized in that: The supply rails are parallel to the reaction rails in the closed state.

10. The movable reaction rail maintenance mechanism for an embedded maglev vehicle according to claim 6, characterized in that: The main body is in a right-angle Z shape, one arm of the main body is provided with the reaction rail, the other arm performs sliding motion through a sliding assembly, and a reinforcing rib is provided between the two arms.

11. The movable reaction rail maintenance mechanism for an embedded maglev vehicle according to claim 10, characterized in that: The main body is formed by welding a plurality of square steel structural members to each other.

12. A maintenance method using the movable reaction rail maintenance mechanism according to any one of claims 1 to 11, characterized in that: The method includes: S1: Arrange the installed embedded maglev vehicle movable reaction rail maintenance mechanism at the maintenance position; S2: starting the driving part and moving the reaction rail to the working position through the driving part; S3: The reaction rail and the power supply rail work together to provide a force to the vehicle running part of the maglev vehicle, and the maglev vehicle is suspended and driven to the maintenance position; S4: using the operation and control system of the maglev vehicle to make the maglev vehicle land on the power supply rail, and using the driving unit to move the reaction rail away from the working position until the maintenance is completed; S5: After the maintenance is completed, the reaction rail is moved to the working position through the driving unit, and the maglev vehicle enters the track for operation through its operation control system.

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