CN110481577A - A kind of embedded high-speed maglev train framework suitable for vacuum pipe - Google Patents

Abstract

The invention relates to a built-in high-speed maglev train frame suitable for vacuum pipelines, which includes a cabin and a suspension drive guide assembly arranged at the bottom of the cabin and embedded in a concave track beam. The cabin is completely sealed from the outside and Its cross-section is approximately circular, including an upper cabin body with a positive bow-shaped cross-section and a lower cabin body with an inverted bow-shaped cross-section, and the cross-sectional area of the upper cabin body is larger than that of the lower cabin body. Compared with the prior art, the present invention has the advantages of approximately circular cross-section, rational use of space, adaptability to low-vacuum pipelines, and good sealing performance of the compartment structure.

Description

A built-in high-speed maglev train frame suitable for vacuum pipelines

technical field

The invention relates to the technical field of rail transit vehicles, in particular to an embedded high-speed maglev train framework suitable for vacuum pipelines.

Background technique

The maglev train is a major technological innovation in the field of transportation. It realizes the non-contact suspension and guidance between the train and the track through electromagnetic force, and then uses the electromagnetic force generated by the linear motor to drive the train, which overcomes the contact between the vehicle and the track. Wear and impact noise break through the limitation of contact force transmission of traditional wheel-rail technology. Compared with other rail transit, maglev transportation has obvious advantages, such as low noise, energy saving and environmental protection, and high safety factor. It will become a complementary travel mode with high-speed rail and aviation in the future comprehensive transportation.

In order to achieve higher transportation speed, the concept of high-speed maglev transportation that does not rely on the contact between wheel-rail and pantograph-catenary came into being. The current operating maximum speed of my country's high-speed maglev is 430km/h. Due to the limitation of ground aerodynamics, the economical and environmental-friendly maximum operating speed of maglev trains under ground atmospheric conditions is about 500-550km/h. There is little room for further increase in operating speed. Large, and the advantages in the competition with high-speed wheel-rail transportation are not outstanding enough. In particular, my country has a large land area. In order to provide higher-speed long-distance travel services, further increase the speed of maglev trains, and fill the gap between the speed of high-speed rail and aviation, it is necessary to adopt vacuum pipeline technology to reduce the pressure of the pipeline to low vacuum conditions, reducing the The air resistance of the magnetic levitation train is small, and the running speed is increased. However, under low vacuum conditions, the car body of the maglev train will bear a huge internal and external pressure difference, which is even higher than that of an airplane. There are extremely high requirements for the rigidity and sealing degree of the maglev cabin. The structure of the existing high-speed maglev train body is similar to Square shape, relatively low rigidity and tightness, its suspension, guide unit and T-shaped track beam adopt "environmentally friendly" structure, and the shape-tracking mechanism is horizontally connected through the lower part of the carriage, it is difficult to design the carriage into a circle, so a suitable for A new framework for high-speed maglev train system with vacuum tubes.

Contents of the invention

The object of the present invention is to provide a built-in high-speed magnetic levitation train framework suitable for vacuum pipelines in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

A built-in high-speed maglev train frame suitable for vacuum pipelines, including a cabin and a suspension driving guide assembly arranged at the bottom of the cabin and embedded in a concave track beam. The cabin is completely sealed from the outside and its cross-section is It is approximately circular and includes interconnected or integrally formed upper cabins with positive bow-shaped cross-sections and lower cabins with inverted bow-shaped cross-sections, and the cross-sectional area of the upper cabins is larger than that of the lower cabins.

The upper cabin is used as a passenger cabin, the middle part of the lower cabin is an installation and maintenance cabin, equipment cabins are arranged on both sides of the installation and maintenance cabin, and the bottom and side edges of the lower cabin are pipeline cabins.

A pluggable electrical module is arranged in the equipment compartment.

The suspension drive guide assembly includes a suspension frame arranged under the pipeline cabin at the bottom of the lower cabin, suspension electromagnets arranged on the upper surfaces of both ends of the suspension frame, guide electromagnets on the outer side, and a skid and a current collector at the bottom. The surface of the concave track beam is respectively provided with stator cores, stator coils, guide plates, support and power supply rails at positions corresponding to the suspension electromagnets, guide electromagnets, sleds and current receivers.

When the train is running, the excitation winding of the suspension electromagnet is fed with a controllable excitation current to generate an excitation magnetic field, which generates suction with the stator core and stator coil, so that the train is suspended on the track. By controlling the magnitude of the excitation current, stable suspension is ensured. The air gap, the stator core and the stator coil generate a traveling wave magnetic field after electrification, and interact with the excitation magnetic field of the suspension electromagnet to generate traction and braking force, control the operation of the train, and realize the suspension, traction and braking of the train.

When running at low speed, the skid and the current receiver pass through the support and contact the power supply rail to provide electric energy for the vehicle. The surface of the suspension electromagnet is installed with a linear generator coil, which interacts with the tooth harmonic magnetic field generated by the stator core to generate electric energy. The on-board equipment supplies power. After reaching the set speed, the electric energy generated by the linear generator coil fully meets the needs of the on-board equipment, and the skid and current receiver are separated from the support and power supply rail.

When the train is running, the guide electromagnets on both sides of the suspension frame are fed with controllable excitation current to generate an excitation magnetic field, which interacts with the guide plate to generate electromagnetic attraction to realize the guidance of the train.

A pair of eddy current braking electromagnets are installed on the inner side of the concave track beam at the position corresponding to the guide electromagnet in the middle of each compartment, to realize the activation of eddy current braking when the braking function of the traction system fails or other emergency situations.

Compared with the prior art, the present invention has the following advantages:

1. The cabin of the maglev train in the present invention adopts an approximately circular cross-section structure. Under the same mass, it has higher rigidity, better sealing performance, can withstand higher internal and external pressure differences, and is more suitable for low-vacuum pipelines.

2. The track beam of the present invention is different from the previous T-shaped track beam, which is a concave structure. The suspension frame, suspension electromagnet, and guide electromagnet are located at the lower part of the cabin and placed inside the concave track beam, which is beneficial to the design of the circular cabin. , is also conducive to the design of the vacuum pipeline, the rational use of space, and is also convenient for construction and reduces costs.

3. The electrical equipment box installed on the car is a pluggable type, which can be loaded, unloaded and overhauled from the inside of the car instead of from the two sides outside the car, which is conducive to realizing the structural sealing of the car.

Description of drawings

Fig. 1 is the overall structure diagram of the present invention.

Instructions for marks in the figure:

1. Cabin, 2. Suspension frame, 3. Suspension electromagnet, 4. Guidance electromagnet, 5. Skid and current collector, 6. Concave track beam, 7. Stator core and stator coil, 8. Guidance Board, 9. Support and power supply rail, 10. Passenger compartment, 11. Equipment compartment, 12. Pipeline compartment, 13. Installation and maintenance compartment.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figure 1, the present invention provides a kind of built-in high-speed maglev train framework suitable for vacuum pipelines, including cabin 1, suspension frame 2, suspension electromagnet 3, guide electromagnet 4, skid and current collector 5 , concave track beam 6, stator core and stator coil 7, guide plate 8 and support and power supply rail 9, the car cabin 1 adopts an approximately circular cross-section structure, and consists of a positive bow-shaped upper cabin and an inverted bow-shaped lower cabin Joint molding, the upper cabin body is the passenger cabin 10, and the lower cabin body includes the equipment cabin 11, the pipeline cabin 12 and the installation and maintenance cabin 13.

The cabin 1 is completely sealed from the outside world. The electrical equipment in the equipment cabin 11 is a pluggable module. The loading and unloading and maintenance of the equipment are completed in the installation and maintenance compartment 13 inside the cabin 1, which ensures the airtightness of the outside of the cabin. The suspension frame 2 is located below the pipeline cabin 12, and both sides are equipped with a suspension electromagnet 3, a guide electromagnet 4, a skid and a current collector 5, and the suspension electromagnet 3 and the guide electromagnet 4 are respectively located on the upper surface of the suspension frame 2 and On the outside, the inner bottom side of the concave track beam 6 is equipped with support and power supply rails 9, the inner two sides are equipped with guide plates 8, and the lower part of the inner two sides protrudes from the crossbeam. The stator core and stator coil 7 are installed, the suspension frame 2, the suspension electromagnetic The iron 3, the guide electromagnet 4, the skid and the current receiver 5 are arranged inside the concave track beam 6 to form an embedded structure. The suspension electromagnet 3 is located directly below the stator core and the stator coil 7, and the guide electromagnet 4 and the guide plate 8 are arranged side by side, and the skid and the current collector 5 are in contact with the support and power supply rail 9 to support the suspension train.

Working principle of the present invention is:

When the train is running, the excitation winding of the levitation electromagnet 3 is fed with a controllable excitation current to generate an excitation magnetic field, which generates suction with the stator core and stator coil 7, so that the train is suspended on the track. By controlling the magnitude of the excitation current, stability is ensured. The suspension air gap; the stator core and the stator coil 7 generate a traveling wave magnetic field after being energized, and interact with the excitation magnetic field of the suspension electromagnet 3 to generate traction force and braking force, control the operation of the train, and realize the suspension, traction and braking of the train;

At low speed, the skid and the current collector 5 contact the power supply rail 9 through the support to provide electric energy for the vehicle. The surface of the suspension electromagnet 3 is equipped with a linear generator coil, which interacts with the tooth harmonic magnetic field generated by the stator core 7 to generate The electric energy supplies power for the on-board equipment. After reaching a certain speed, the electric energy generated by the linear generator coil fully meets the needs of the on-board equipment, and the skid and the current receiver 5 are separated from the support and the power supply rail 9 .

The guide electromagnets 4 on both sides of the suspension frame 2 lead into a controllable exciting current to generate an exciting magnetic field, and interact with the guide plate 8 to generate electromagnetic attraction to realize the guiding function of the train; A pair of eddy current braking electromagnets are installed at the position corresponding to the guiding electromagnet 3 in the middle of the cabin 1, and the eddy current braking is activated only when the braking function of the traction system fails or other emergencies.

Claims (8)

1. A built-in high-speed maglev train framework suitable for vacuum pipelines, comprising a cabin (1) and a suspension drive guide assembly arranged at the bottom of the cabin (1) and embedded in the concave track beam (6), its characteristics That is, the vehicle cabin (1) is completely sealed from the outside world and its cross section is approximately circular, including an upper cabin body with a positive bow shape in cross section and a lower cabin body with an inverted bow shape in cross section, and the upper cabin body has a larger cross-sectional area than the lower cabin body body. 2. a kind of embedded high-speed maglev train frame suitable for vacuum pipeline according to claim 1, is characterized in that, described upper cabin body is as passenger compartment (10), and the middle part of described lower cabin body is Installation and maintenance cabin (13), the both sides of installation and maintenance cabin (13) are provided with equipment cabin (11), and the bottom and the side edge of lower cabin body are pipeline cabins (12). 3. A kind of embedded high-speed maglev train frame suitable for vacuum pipeline according to claim 2, characterized in that, a pluggable electrical module is arranged in the described equipment compartment (11). 4. A kind of built-in high-speed maglev train framework suitable for vacuum pipelines according to claim 1, characterized in that, said suspension drive guide assembly includes a suspension system arranged below the pipeline cabin (12) at the bottom of the lower cabin body. frame (2), the suspension electromagnet (3) arranged on the upper surface of both ends of the suspension frame (2), the guide electromagnet (4) on the outer surface, the slide and the current receiver (5) at the bottom, the concave The surface of the type track beam (6) is respectively provided with a stator core and a stator coil (7 ), guide plate (8) and support and power supply rail (9). 5. A kind of embedded high-speed maglev train framework suitable for vacuum pipelines according to claim 4, characterized in that, when the train is running, the field winding of the levitation electromagnet (3) feeds into a controllable field current to generate The excitation magnetic field generates suction with the stator core and the stator coil (7), so that the train is suspended on the track. By controlling the magnitude of the excitation current, a stable suspension air gap is ensured. After the stator core and the stator coil (7) are energized, a running The wave magnetic field interacts with the excitation magnetic field of the suspension electromagnet (3) to generate traction force and braking force, controls the operation of the train, and realizes the suspension, traction and braking of the train. 6. A kind of embedded high-speed maglev train frame suitable for vacuum pipelines according to claim 4, characterized in that, when running at a low speed, the skid and the current collector (5) pass through and support the power supply rail (9 ) contact to provide electric energy for the vehicle. The surface of the suspension electromagnet (3) is equipped with a linear generator coil, which interacts with the tooth harmonic magnetic field generated by the stator core to generate electric energy to supply power for the vehicle equipment. After reaching the set speed, the linear generator The electric energy generated by the coil fully meets the requirements of the on-board equipment, and the skid and the current receiver (5) are separated from the support and the power supply rail (9). 7. A kind of built-in high-speed maglev train framework suitable for vacuum pipelines according to claim 4, characterized in that, when the train is running, the guide electromagnets (4) on both sides of the suspension frame (2) can be connected The controlled excitation current generates an excitation magnetic field, which interacts with the guide plate (8) to generate electromagnetic attraction to realize the guidance of the train. 8. A kind of embedded high-speed maglev train framework suitable for vacuum pipelines according to claim 1, characterized in that, the inner surface of the concave track beam (6) is correspondingly guided by electromagnetic in the middle of each compartment (1). A pair of eddy current brake electromagnets are installed at the position of the iron (3), which are used to start the eddy current brake when the braking function of the traction system fails or other emergency situations.