Magnetic-levitation train traction suspension combined type induction rail and traction suspension system electromagnetic structure
By merging the electromagnet induction rail and the linear induction motor under the track beam, and changing the direction of the motor's normal force, the problems of large space occupation and unstable levitation force in traditional maglev trains are solved, resulting in stronger levitation performance and lower current control difficulty.
Patent Information
- Application Number
- CN202423292358.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Traditional maglev trains have separate layouts for the levitation electromagnets and linear induction motors, which occupy a lot of space. Furthermore, the normal force of the linear induction motor has a negative impact on the levitation force, increasing the operating current of the electromagnets and making control more difficult.
The electromagnet induction rail and the secondary of the linear induction motor are both arranged below the track beam. The position of the primary of the linear induction motor is changed so that its normal force direction is consistent with the electromagnetic attraction direction of the electromagnet. The normal force is used to provide levitation force, and the working air gap of the levitation electromagnet and the linear induction motor are merged into the same horizontal plane.
It reduces space occupation, improves the levitation performance of maglev trains, reduces the operating current and control difficulty of electromagnets, and optimizes the structural design of maglev trains.
Smart Images
Figure CN223590553U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of magnetic suspension, specifically, a kind of magnetic levitation train traction suspension composite type induction rail and traction suspension system electromagnetic structure. BACKGROUND
[0002] Magnetic levitation vehicle represents the forefront of modern rail transport technology, it realizes the running mode of non-contact between vehicle body and track by using advanced electromagnetic theory. The core of this technology is to use electromagnetic force to overcome the earth's gravity, so that the train can realize the suspension state on the track, and thus greatly reduce the inevitable friction loss in traditional wheel-rail system. Magnetic levitation train not only can reach very high speed, and because there is no direct physical contact, the noise and vibration generated during operation are also much lower than traditional railway transport tools.
[0003] Among them, suspension electromagnet and traction linear motor are the key components of magnetic levitation vehicle to realize suspension and propulsion, they each play different roles, and together ensure the efficient operation of magnetic levitation train.
[0004] In common magnetic levitation vehicle design, electromagnet is installed at the bottom of the vehicle, and electromagnet induction rail is usually arranged below the track beam, because its shape is similar to the letter F, it is also called F rail (see Figure 1 ). Electromagnet will generate a magnetic field after electrification, and the interaction between this magnetic field and induction rail can produce an upward force, so that the train is suspended.
[0005] And traction linear motor is the power source of magnetic levitation train, it is divided into linear synchronous motor and linear induction motor, and at present, linear induction motor is more common in low-speed magnetic levitation transportation. The primary of this type of linear motor is composed of core and winding, which is installed at the bottom of the train, and the secondary is a thin metal plate laid along the top of the track beam, also called reaction plate (see Figure 1 ). When the primary is powered, a magnetic field along the track direction will be generated, and this magnetic field interacts with the induced magnetic field in the reaction plate to produce thrust, which pushes the train forward.
[0006] As shown in Figure 1 , the suspension electromagnet induction rail of traditional magnetic levitation train and the secondary of linear induction motor (reaction plate) are arranged on the upper and lower surfaces of the track beam respectively, the working magnetic field of suspension electromagnet and the magnetic field of traction linear motor are independent of each other, Figure 1In the scheme, the reference numeral 101 is a linear induction motor primary, the reference numeral 102 is a linear induction motor secondary, the reference numeral 103 is an F rail, the reference numeral 104 is an electromagnet yoke, the reference numeral 105 is an electromagnet coil, and the reference numeral 106 is a rail beam. The scheme not only occupies a large space, but also causes an adverse effect on train suspension when the traction motor works because the direction of the normal force of the motor is opposite to the direction of the electromagnet attraction force, and the working current of the electromagnet and the control difficulty are increased. Practical new type content
[0007] The utility model aims at providing a kind of maglev train traction suspension composite induction rail and traction suspension system electromagnetic structure, to solve the layout mode of the suspension electromagnet and linear induction motor of traditional maglev train independent each other Large space occupation, and linear induction motor normal force has negative effect on suspension force Problem.
[0008] The utility model is implemented by using the following technical solutions:
[0009] The utility model provides a kind of maglev train traction suspension composite induction rail, including electromagnet induction rail, the electromagnet induction rail is arranged below rail beam along line direction, the both sides of the electromagnet induction rail are formed with protrusion downward, the end face of the protrusion is the pole face of the electromagnet induction rail, installation cavity is formed between the both sides of the protrusion;
[0010] The installation cavity is provided with mounting rail, and the mounting rail is connected with the electromagnet induction rail.
[0011] The bottom of the mounting rail is formed with a plane, and the plane is the mounting surface of the linear induction motor secondary.
[0012] Because the both sides of the maglev train traction suspension composite induction rail of the utility model are formed with protrusion downward, installation cavity is formed between the both sides of the protrusion, mounting rail is installed in installation cavity, and the bottom of the mounting rail is used to install linear induction motor secondary, therefore, by using the above structure, the electromagnet induction rail and linear induction motor secondary are arranged below rail beam, instead of being arranged independently on the upper and lower sides of rail beam in traditional way, after linear induction motor secondary is arranged below rail beam, to ensure the cooperation of linear induction motor primary and linear induction motor secondary, therefore, linear induction motor primary will also be arranged below rail beam. Compared with traditional arrangement mode, the utility model can reduce the occupation of the volume on the top of rail beam, and linear induction motor secondary can be arranged in the installation cavity of the electromagnet induction rail, and linear induction motor primary can be correspondingly arranged, and the space occupied by the overall structure is less.
[0013] And when the linear induction motor primary and the linear induction motor secondary are arranged above the track beam, the normal force direction of the linear induction motor is downward, and the electromagnetic attraction direction between the electromagnet induction rail and the electromagnet is upward, the electromagnetic attraction direction is opposite to the normal force direction of the linear induction motor, which causes adverse effects on train suspension when the traction motor works, and increases the working current and control difficulty of the electromagnet; after the linear induction motor secondary and the linear induction motor primary are arranged below the track beam, the linear induction motor primary is located below the linear induction motor secondary, the normal force direction of the linear induction motor is upward, which is the same as the electromagnetic attraction direction between the electromagnet induction rail and the electromagnet, and the normal force of the linear induction motor can be used to provide part of the suspension force for the maglev train, therefore, the suspension performance of the maglev train with the traction suspension composite induction rail of the utility model is stronger, and the adverse effects on train suspension are avoided, and the working current and control difficulty of the electromagnet can be reduced.
[0014] The traction suspension composite induction rail of the maglev train breaks the conventional design idea, changes the shape of the electromagnet induction rail, changes the arrangement position of the linear induction motor secondary, and changes the direction of the normal force of the linear induction motor, which reduces the space occupation on one hand, and improves the suspension performance of the vehicle on the other hand.
[0015] As a preferred technical scheme:
[0016] The electromagnet induction rail is fixedly connected with the track beam.
[0017] As a preferred technical scheme:
[0018] The installation rail is fixedly connected with the electromagnet induction rail.
[0019] As a preferred technical scheme:
[0020] The electromagnet induction rail adopts an inverted U-shaped structure.
[0021] As a preferred technical scheme:
[0022] The installation rail is arranged at the middle position of the electromagnet induction rail.
[0023] As a preferred technical scheme:
[0024] The plane is parallel to the lower surface of the electromagnet induction rail and the lower surface of the track beam.
[0025] As a preferred technical scheme:
[0026] The electromagnet induction rail adopts a single-layer structure or a multi-layer laminated structure.
[0027] When the electromagnet induction rail adopts a multi-layer laminated structure, each electromagnet induction rail has the same shape and different sizes, the electromagnet induction rail is installed in the mounting cavity of another electromagnet induction rail, and the two electromagnet induction rails are matched and attached.
[0028] As a preferred technical solution:
[0029] The mounting rail and the electromagnet induction rail adopt a solid structure or a hollow structure.
[0030] The utility model further provides a kind of electromagnetic structure of traction suspension system, including above-mentioned magnetic levitation train traction suspension composite induction rail, suspension electromagnet and linear induction motor;
[0031] The linear induction motor includes linear induction motor primary and linear induction motor secondary, the linear induction motor secondary is laid on the bottom surface of the mounting rail of the magnetic levitation train traction suspension composite induction rail, and the linear induction motor primary is arranged below the linear induction motor secondary and is oppositely arranged with the linear induction motor secondary.
[0032] The suspension electromagnet is arranged below the magnetic levitation train traction suspension composite induction rail, and the two poles of the suspension electromagnet are oppositely arranged with the two pole faces of the electromagnet induction rail.
[0033] As a preferred technical solution:
[0034] The suspension electromagnet includes a magnetic yoke and a coil, the magnetic yoke adopts a U-shaped structure, and the magnetic yoke is oppositely arranged with the electromagnet induction rail.
[0035] The coil is respectively mounted on the left and right arms of the magnetic yoke, the linear induction motor primary is arranged in the middle part of the magnetic yoke and located in the U-shaped space of the magnetic yoke.
[0036] As a preferred technical solution:
[0037] The linear induction motor primary and the upper surface of the magnetic yoke are filled with a heat dissipation medium.
[0038] As a preferred technical solution:
[0039] The heat dissipation medium adopts heat-conducting silicone grease or a water-cooled plate, and the heat dissipation medium is not limited to heat-conducting silicone grease or a water-cooled plate, and other structure members that can achieve heat dissipation effect can also be used.
[0040] As a preferred technical solution:
[0041] The magnetic yoke adopts a monolithic structure or a split structure.
[0042] The magnetic yoke includes a main body located in the middle part and arms located on both sides of the main body.
[0043] When the magnetic yoke adopts a monolithic structure, the main body and the left and right arms are connected to form a whole;
[0044] When the magnetic yoke adopts a split structure, the main body and the left and right arms are separated, and the left and right arms of the magnetic yoke are arranged on the two sides of the main body, respectively.
[0045] In summary, due to the adoption of the above technical scheme, the magnetic levitation train of the present application has the following advantages:
[0046] 1. The magnetic levitation train of the present application has a protrusion formed downward on both sides of the traction suspension composite induction rail, an installation cavity is formed between the two protrusions, an installation rail is installed in the installation cavity, and the bottom of the installation rail is used to install the secondary of the linear induction motor. Therefore, by using the above structure, the electromagnet induction rail and the secondary of the linear induction motor are arranged below the track beam, instead of being arranged independently on the upper and lower sides of the track beam in the traditional way. After arranging the secondary of the linear induction motor below the track beam, the primary of the linear induction motor is also arranged below the track beam to ensure the cooperation between the primary and the secondary. Compared with the traditional arrangement method, the present application can reduce the occupation of the volume above the track beam, and the secondary of the linear induction motor can be arranged in the installation cavity of the electromagnet induction rail, and the primary of the linear induction motor can be arranged correspondingly, so that the overall structure occupies less space.
[0047] 2. After arranging the secondary of the linear induction motor and the primary of the linear induction motor below the track beam, the primary of the linear induction motor is located below the secondary of the linear induction motor, and the normal force direction of the linear induction motor is upward, which is the same as the direction of the electromagnetic attraction force between the electromagnet induction rail and the electromagnet. The normal force of the linear induction motor can be used to provide part of the suspension force for the magnetic levitation train, so that the magnetic levitation train using the traction suspension composite induction rail of the present application has stronger suspension performance, and the working current and control difficulty of the electromagnet are also reduced.
[0048] 3. The traction suspension composite induction rail of the magnetic levitation train of the present application breaks the conventional design idea, changes the shape of the electromagnet induction rail, changes the arrangement position of the secondary of the linear induction motor, and changes the direction of the normal force of the linear induction motor, which reduces the space occupation on one hand and improves the suspension performance of the vehicle on the other hand.
[0049] 4. The electromagnetic structure of the traction suspension system adjusts the position of the linear induction motor primary to the middle of the suspension electromagnet, adjusts the position of the coil of the suspension electromagnet from the middle of the yoke to the left and right arms of the yoke, so that the overall structure is compact and the space utilization rate is high, not only combines the working air gap of the suspension electromagnet and the linear induction motor two electromagnetic systems, the working air gap of the suspension electromagnet and the linear induction motor is located in the same horizontal plane, greatly reduces the space occupation, and makes the normal force of the linear induction motor and the electromagnetic attraction force direction consistent, can use the normal force to provide part of the suspension force for the maglev train, thereby assisting the vehicle suspension. Compared with the maglev train using the traditional independent arrangement of the suspension system and the traction system, the maglev train using the electromagnetic structure of the traction suspension system has stronger suspension performance, and because the required space at the bottom of the train is reduced, the cross-sectional area of the maglev train can be optimized, the weight of the vehicle is reduced, and the further development of the maglev vehicle is promoted.
[0050] 5. The electromagnetic structure of the traction suspension system of the utility model fills the heat dissipation medium between the linear induction motor primary and the upper surface of the yoke, which can simultaneously dissipate heat for the linear induction motor and the suspension electromagnet. BRIEF DESCRIPTION OF DRAWINGS
[0051] Figure 1 It is a layout diagram of the traction motor and the suspension electromagnet of the traditional maglev train.
[0052] Figure 1 Reference numerals: 101-linear induction motor primary, 102-linear induction motor secondary, 103-F rail, 104-electromagnet yoke, 105-electromagnet coil, 106-rail beam.
[0053] Figure 2 It is a structure diagram of the traction suspension composite induction rail of the maglev train.
[0054] Figure 3 It is a three-dimensional structure diagram of the traction suspension composite induction rail of the maglev train.
[0055] Figure 4 It is a structure diagram of the electromagnetic structure of the traction suspension system.
[0056] Figures 2-4 Reference numerals: 1-electromagnet induction rail, 2-rail beam, 3-mounting rail, 4-linear induction motor secondary, 5-linear induction motor primary, 6-yoke, 7-coil, 8-heat dissipation medium, 9-protrusion, 10-mounting cavity. DETAILED DESCRIPTION
[0057] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0058] Example 1
[0059] like Figure 2 and Figure 3 As shown in the figure, this embodiment proposes a maglev train traction suspension composite induction rail, including an electromagnet induction rail 1, which is arranged below the track beam 2 along the track direction, and the electromagnet induction rail 1 is fixedly connected to the track beam 2.
[0060] The electromagnet induction rail 1 has downward protrusions 9 on both sides, the end face of the protrusions 9 is the pole face of the electromagnet induction rail 1, and a mounting cavity 10 is formed between the two protrusions 9.
[0061] In this embodiment, the electromagnet induction rail 1 adopts an inverted U-shaped structure, that is, the cross-section of the electromagnet induction rail 1 is approximately inverted U-shaped, and the inverted U-shaped electromagnet induction rail 1 has the mounting cavity 10.
[0062] An installation rail 3 is provided inside the mounting cavity 10, and the installation rail 3 is fixedly connected to the electromagnet induction rail 1.
[0063] In this embodiment, the mounting rail 3 is arranged at the middle position of the electromagnet induction rail 1.
[0064] The bottom of the mounting rail 3 has a flat surface, which is parallel to the lower surface of the electromagnet induction rail 1 and the lower surface of the track beam 2. This flat surface is the mounting surface of the linear induction motor secondary winding 4 (reaction plate).
[0065] The thickness of the mounting rail 3 can be adjusted up or down according to the working air gap requirements of the linear induction motor.
[0066] The mounting rail 3 and the electromagnet induction rail 1 are connected by a solid structure (e.g., Figure 2 (as shown on the right) or hollow structure (such as...) Figure 2 As shown on the left), when the mounting rail 3 and the electromagnet induction rail 1 adopt a solid structure, the mounting rail 3 uses more material, but has greater structural strength, rigidity, and stability; when the mounting rail 3 and the electromagnet induction rail 1 adopt a hollow structure, lightweight design can be carried out, reducing weight and saving materials.
[0067] The electromagnet induction rail 1 can adopt a single-layer structure (as shown in the electromagnet induction rail 1 on the right side in FIG. 1) or a multi-layer laminated structure (as shown in the electromagnet induction rail 1 on the left side in FIG. 1). Figure 2 The electromagnet induction rail 1 can adopt a single-layer structure (as shown in the electromagnet induction rail 1 on the right side in FIG. 1) or a multi-layer laminated structure (as shown in the electromagnet induction rail 1 on the left side in FIG. 1). Figure 2 The electromagnet induction rail 1 can adopt a single-layer structure (as shown in the electromagnet induction rail 1 on the right side in FIG. 1) or a multi-layer laminated structure (as shown in the electromagnet induction rail 1 on the left side in FIG. 1).
[0068] The electromagnet induction rail 1 can adopt a single-layer structure (as shown in the electromagnet induction rail 1 on the right side in FIG. 1) or a multi-layer laminated structure (as shown in the electromagnet induction rail 1 on the left side in FIG. 1).
[0069] The electromagnet induction rail 1 can adopt a single-layer structure (as shown in the electromagnet induction rail 1 on the right side in FIG. 1) or a multi-layer laminated structure (as shown in the electromagnet induction rail 1 on the left side in FIG. 1).
[0070] Embodiment 2
[0071] As shown in FIG. 1, the electromagnet induction rail 1 is arranged on the track beam 2, and the electromagnet induction rail 1 is arranged on the track beam 2 in a downward manner. Figure 4As shown, the embodiment proposes a traction suspension system electromagnetic structure, which comprises the magnetic levitation train traction suspension composite induction rail, the suspension electromagnet and the linear induction motor in the embodiment 1, the linear induction motor comprises a linear induction motor primary 5 and a linear induction motor secondary 4, the linear induction motor secondary 4 is laid on the bottom surface of the installation rail 3 of the magnetic levitation train traction suspension composite induction rail, and the linear induction motor primary 5 is arranged directly below the linear induction motor secondary 4 and is oppositely arranged with the linear induction motor secondary 4.
[0072] The suspension electromagnet is arranged directly below the magnetic levitation train traction suspension composite induction rail, and the two poles of the suspension electromagnet are oppositely arranged with the two pole surfaces of the electromagnet induction rail 1.
[0073] The suspension electromagnet comprises a magnetic yoke 6 and a coil 7, in the embodiment, the magnetic yoke 6 adopts a U-shaped structure, that is, the cross section of the magnetic yoke 6 is approximately U-shaped, and the magnetic yoke 6 is oppositely arranged with the electromagnet induction rail 1.
[0074] The left and right arms of the magnetic yoke 6 are respectively provided with the coil 7, the linear induction motor primary 5 is arranged in the middle of the magnetic yoke 6 and located in the U-shaped space of the magnetic yoke 6 and is arranged in close contact with the upper surface of the middle of the magnetic yoke 6, so that the layout of the suspension electromagnet surrounding the linear induction motor is formed, the structure is compact, and the space utilization rate is high.
[0075] Further, in order to enhance the heat dissipation effect of the linear induction motor and the suspension electromagnet, the upper surface between the linear induction motor primary 5 and the magnetic yoke 6 is filled with a heat dissipation medium 8, the heat dissipation medium 8 can adopt heat-conducting silicone grease, a water-cooled plate and the like, and can simultaneously dissipate heat for the linear induction motor and the suspension electromagnet.
[0076] The position of the linear induction motor primary 5 is adjusted to the middle of the suspension electromagnet, the position of the coil 7 of the suspension electromagnet is adjusted from the middle of the magnetic yoke 6 to the left and right arms of the magnetic yoke 6, so that the overall structure is compact, the space utilization rate is high, the working air gap of the two large electromagnetic systems of the suspension electromagnet and the linear induction motor is combined, the working air gap of the suspension electromagnet and the linear induction motor is located in the same horizontal plane, the space occupation is greatly reduced, and the normal force of the linear induction motor is consistent with the electromagnetic attraction force direction, the normal force can be used to provide part of the suspension force for the magnetic levitation train, so that the vehicle suspension plays a boosting role.
[0077] Compared with the magnetic levitation train adopting the traditional independent arrangement of the suspension system and the traction system, the magnetic levitation train using the traction suspension system electromagnetic structure has stronger suspension performance, and due to the reduction of the space required at the bottom of the train, the cross-sectional area of the magnetic levitation train can be optimized, the weight of the vehicle is reduced, and the further development of the magnetic levitation vehicle is promoted.
[0078] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A traction-suspension combined induction rail for a maglev train, characterized in that: an electromagnet induction rail is arranged below a track beam in a line direction, and protrusions are formed downward on both sides of the electromagnet induction rail, the end faces of the protrusions being pole faces of the electromagnet induction rail, and a mounting cavity is formed between the protrusions on both sides; a mounting rail is arranged in the mounting cavity and connected to the electromagnet induction rail; and a flat surface is formed on the bottom of the mounting rail, which is a mounting surface of a secondary linear induction motor.
2. The traction-suspension combined induction rail for a maglev train according to claim 1, characterized in that: the electromagnet induction rail adopts an inverted U-shaped structure.
3. The traction-suspension combined induction rail for a maglev train according to claim 1, characterized in that: the mounting rail is arranged at a middle position of the electromagnet induction rail.
4. The traction-suspension combined induction rail for a maglev train according to claim 1, characterized in that: the flat surface is parallel to the lower surface of the electromagnet induction rail and the lower surface of the track beam.
5. The traction-suspension combined induction rail for a maglev train according to claim 1, characterized in that: the electromagnet induction rail adopts a single-layer structure or a multi-layer stacked structure; when the electromagnet induction rail adopts the multi-layer stacked structure, each electromagnet induction rail has the same shape but different sizes, the electromagnet induction rail is arranged in the mounting cavity of another electromagnet induction rail, and the two electromagnet induction rails are adapted to and fit with each other.
6. The traction-suspension combined induction rail for a maglev train according to claim 1, characterized in that: the mounting rail and the electromagnet induction rail adopt a solid structure or a hollow structure.
7. An electromagnetic structure of a traction-suspension system, characterized in that: it comprises the traction-suspension combined induction rail for a maglev train according to any one of claims 1-6, a suspension electromagnet, and a linear induction motor; the linear induction motor comprises a primary linear induction motor and a secondary linear induction motor, the secondary linear induction motor is laid on the bottom surface of the mounting rail of the traction-suspension combined induction rail for a maglev train, and the primary linear induction motor is arranged below the secondary linear induction motor and opposite to the secondary linear induction motor; and the suspension electromagnet is arranged below the traction-suspension combined induction rail for a maglev train, and the two poles of the suspension electromagnet are arranged opposite to the two pole faces of the electromagnet induction rail.
8. The electromagnetic structure of a traction-suspension system according to claim 7, characterized in that: the suspension electromagnet comprises a magnetic yoke and a coil, the magnetic yoke adopts a U-shaped structure, and the magnetic yoke is arranged opposite to the electromagnet induction rail; the coil is arranged on the left and right arms of the magnetic yoke, and the primary linear induction motor is arranged in the middle of the magnetic yoke and in the U-shaped space of the magnetic yoke.
9. The electromagnetic structure of a traction-suspension system according to claim 8, characterized in that: a heat dissipation medium is filled between the upper surface of the magnetic yoke and the primary linear induction motor.
10. The electromagnetic structure of a traction-suspension system according to claim 8, characterized in that: The magnetic yoke adopts a whole structure or a split structure; The magnetic yoke comprises a main body in the middle and arms on both sides of the main body respectively; When the magnetic yoke adopts the whole structure, the main body and the left and right arms are connected to form a whole; When the magnetic yoke adopts the split structure, the main body and the left and right arms are separated, and the left and right arms of the magnetic yoke are arranged on both sides of the main body respectively.