A magnetic levitation linear motor installation structure

Abstract

This application provides a mounting structure for a magnetic levitation linear motor. The mounting structure includes a guide assembly connected to the bottom of a vehicle body; connecting assemblies respectively disposed on opposite sides of the guide assembly, the guide assembly and the connecting assemblies being slidably connected in a vertical direction; a protective assembly disposed at the bottom of the connecting assemblies, the protective assemblies on both sides forming a motor mounting space between them; a magnetic levitation linear motor disposed within the motor mounting space; and a reactive aluminum plate disposed on the bottom of the vehicle body away from the guide assembly, the reactive aluminum plate being at a predetermined distance from the magnetic levitation linear motor. This application, through the above mounting structure, enables the magnetic levitation linear motor to achieve a suitable operating clearance for optimal efficiency, enhances the vehicle's acceleration performance, and reduces the power consumption of the linear motor.

Description

Technical Field

[0001] This invention relates to the field of levitation train technology, and in particular to a magnetic levitation linear motor mounting structure. Background Technology

[0002] A levitation train is a type of train propelled by magnetic levitation. It achieves contactless levitation and guidance between the train and the track through electromagnetic force, and then uses the electromagnetic force generated by a linear motor to pull the train. The linear motor uses magnetic levitation support to maintain a certain air gap between the stator and the moving part without contact, which eliminates the contact friction resistance between the stator and the moving part, thus greatly improving the system's sensitivity, speed, and responsiveness.

[0003] However, an excessively large air gap can lead to low efficiency and power factor, especially at low speeds. Therefore, it is necessary to limit the air gap between the mover and stator. A conventional solution can be found in the existing patent with patent number CN201911345080.3, which achieves this by setting spring limits between the mover and stator.

[0004] However, this approach results in extremely low efficiency in utilizing the air gap of the magnetic levitation linear motor. Summary of the Invention

[0005] This application provides a mounting structure for a magnetic levitation linear motor to achieve adaptive air gap control of the magnetic levitation linear motor.

[0006] The mounting structure is disposed at the bottom of the vehicle body, and the mounting structure includes:

[0007] Guide components connected to the bottom of the vehicle body;

[0008] Connecting components are respectively disposed on opposite sides of the guide component, and the guide component and the connecting component are slidably connected in the vertical direction;

[0009] The protective component is located at the bottom of the connecting component, and the protective components on both sides and the connecting component form a motor mounting space.

[0010] A magnetic levitation linear motor is installed within the motor mounting space.

[0011] A reactive aluminum plate is disposed at the bottom of the vehicle body on the side away from the guide assembly, and the reactive aluminum plate is at a predetermined distance from the magnetic levitation linear motor.

[0012] Preferably, the guiding component includes:

[0013] A guide body, the guide body having a guide groove inside, the guide groove penetrating the guide body horizontally, and the guide groove having a preset groove depth in the vertical direction;

[0014] A guide rod is disposed in the guide groove, the guide rod moves vertically within the guide groove, and the guide rod has two free ends that extend out of the guide groove;

[0015] A guide limiting unit is installed at the bottom of the guide body.

[0016] Preferably, the two sides of the connecting assembly are fixedly connected to the two free ends of the guide rod, respectively;

[0017] When the train stops, the protective component comes into contact with the reactive aluminum plate, and the top of the connecting component is at a preset distance from the bottom of the vehicle body.

[0018] Preferably, the guide limiting unit includes:

[0019] First wedge blocks are respectively disposed inside the bottom two sides of the guide body. The first wedge blocks are embedded in the guide body in a direction perpendicular to the guide rod. The guide body and the first wedge blocks are connected by long bolts. The first wedge blocks move with the long bolts in a direction perpendicular to the guide rod.

[0020] A second wedge block is disposed on the side of the first wedge block away from the reactive aluminum plate. The guide body has vertical sliding tracks on both sides. The second wedge block is disposed in the sliding tracks and moves vertically in the sliding tracks.

[0021] When the train stops, the guide rod abuts against the upper surface of the second wedge block.

[0022] Preferably, the guiding assembly further includes guide wheels, which are disposed at both ends of the guide rod;

[0023] The upper surface of the second wedge has a semi-circular groove;

[0024] When the train stops, the guide wheel is positioned in the semi-circular groove.

[0025] Preferably, the upper surface of the first wedge block is an inclined surface, and the lower surface of the second wedge block is an inclined surface;

[0026] The inclination of the upper surface of the first wedge block is the same as the inclination of the lower surface of the second wedge block.

[0027] Preferably, the connection component includes:

[0028] A connecting plate, one end of which is connected to the protective component, and the other end of which is connected to the guide component;

[0029] A connection limiter is embedded at the connection between the connecting plate and the guide assembly.

[0030] Preferably, the mounting structure further includes a plurality of preload springs, one end of which is connected to the guide assembly, and the other end of which is in contact with the connecting assembly.

[0031] This application provides a mounting structure for a magnetic levitation linear motor. The mounting structure includes a guide assembly connected to the bottom of a vehicle body; connecting assemblies respectively disposed on opposite sides of the guide assembly, the guide assembly and the connecting assemblies being slidably connected in a vertical direction; a protective assembly disposed at the bottom of the connecting assemblies, the protective assemblies on both sides forming a motor mounting space between them; a magnetic levitation linear motor disposed within the motor mounting space; and a reactive aluminum plate disposed on the bottom of the vehicle body away from the guide assembly, the reactive aluminum plate being at a predetermined distance from the magnetic levitation linear motor. This application, through the above mounting structure, allows the magnetic levitation linear motor to achieve an optimal operating gap for its efficiency, enhancing the vehicle's acceleration performance and reducing the power consumption of the linear motor. Attached Figure Description

[0032] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a front view schematic diagram of a magnetic levitation linear motor mounting structure according to this application;

[0034] Figure 2 This is a side view of the mounting structure of a magnetic levitation linear motor according to this application;

[0035] Figure 3 for Figure 2 A magnified schematic diagram of the local structure at point A;

[0036] Figure 4 for Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0037] Legend:

[0038] 1-Guide assembly, 11-Guide body, 12-Guide groove, 13-Guide rod, 14-Guide limiting unit, 141-First wedge block, 142-Long bolt, 143-Second wedge block, 15-Guide wheel, 2-Connecting assembly, 21-Connecting plate, 22-Connecting limit, 3-Protective assembly, 4-Magnetic levitation linear motor, 5-Reactive aluminum plate, 6-Preload spring. Detailed Implementation

[0039] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] In conventional air gap limiting technology for magnetic levitation linear motors, the air gap is often limited by setting a spring structure between the mover and stator. However, this solution has the following problems:

[0041] 1. The installation height of the linear motor for a maglev vehicle cannot be adjusted according to the actual clearance after installation;

[0042] 2. The air gap of the linear motor in a maglev vehicle is affected by the vehicle's buoyancy, which will increase in actual use. An excessively large air gap will reduce the efficiency and power factor of the maglev linear motor.

[0043] 3. The clearance is related to the linear motor's own weight, vertical suction force, and spring stiffness. It has poor versatility, cannot be compatible with other linear motors of different specifications, and cannot precisely control the clearance.

[0044] 4. The structure is complex, making installation and maintenance inconvenient;

[0045] 5. Linear motors are susceptible to impact. The weight of the linear motor will compress the spring a certain distance. When the motor is powered on, it will generate a downward suction force to further compress the spring. When the motor is de-energized, the spring compression force will be released, causing an impact on the motor.

[0046] 6. The operation is prone to jamming and not smooth enough. It requires high assembly precision. The screw and sleeve are used to achieve the up and down movement. When multiple sets are used at the same time, jamming is prone to occur.

[0047] 7. Without protection function, if the maglev vehicle loses power but the motor does not lose power, the motor will collide with the aluminum reaction plate.

[0048] 8. As it is an active adjustment, it is affected by many factors, such as the motor suction affecting the clearance, and the manufacturing and assembly precision affecting the movement, leading to unstable operation.

[0049] Based on the above problems, this application provides the following implementation scheme to optimize the utilization efficiency of the air gap of the magnetic levitation linear motor.

[0050] Figure 1 This is a front view schematic diagram of the mounting structure of a magnetic levitation linear motor according to this application.

[0051] See Figure 1As can be seen, this embodiment provides a magnetic levitation linear motor mounting structure, which is disposed at the bottom of the vehicle body, and the mounting structure includes:

[0052] The guide component 1 connected to the bottom of the vehicle body, specifically in this embodiment, serves to guide the vehicle in the vertical direction, preventing the magnetic levitation linear motor 4 from swinging in the horizontal direction, which could lead to wear of the magnetic levitation linear motor 4 or other components such as the vehicle body.

[0053] Connecting components 2 are respectively disposed on opposite sides of the guide component 1. The guide component 1 and the connecting components 2 are slidably connected in the vertical direction. Specifically, in this embodiment, the connecting components 2 serve to guide the upward lift of the maglev linear motor 4 to the guide component 1 when the train is running. The sliding connection between the connecting components 2 and the guide component 1 also enables the maglev linear motor 4 to slide in the vertical direction within a certain range, thereby limiting the air gap of the maglev linear motor 4 and avoiding the problem of reduced power of the maglev linear motor 4 due to excessive air gap.

[0054] The protective component 3 is set at the bottom of the connecting component 2. The protective components 3 on both sides and the connecting component 2 form a motor installation space. Specifically, in this embodiment, the protective component 3 protects the side of the maglev linear motor 4, preventing the maglev linear motor 4 from moving in the horizontal direction, thereby eliminating the problem of unstable train operation caused by the deviation of the maglev linear motor 4.

[0055] The magnetic levitation linear motor 4 is installed in the motor mounting space.

[0056] A reactive aluminum plate 5 is disposed at the bottom of the vehicle body, away from the guide component 1. The reactive aluminum plate 5 and the magnetic levitation linear motor 4 are at a predetermined distance. Specifically, in this embodiment, the reactive aluminum plate 5 is an inherent structure of the magnetic levitation train. This embodiment utilizes the sliding connection between the connecting component 2 and the guide component 1 instead of a spring structure, avoiding the problem of spring rebound when the train stops, which could cause the magnetic levitation linear motor 4 to collide with the vehicle body. This improves the service life of the magnetic levitation linear motor 4 and its operational quality. (In the patent application number CN201911345080.3, the motor generates attraction to the aluminum plate during operation, and the spring is stretched. When the train stops, the spring retracts, increasing the distance between the motor and the plate, thus preventing the motor from colliding with the aluminum plate. However, the spring retraction would cause an impact on the motor.)

[0057] Figure 2 This is a side view of the mounting structure of a magnetic levitation linear motor according to this application.

[0058] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0059] See Figure 2 and Figure 3 It is understood that, further, in some embodiments, the guide component 1 includes:

[0060] The guide body 11 has a guide groove 12 inside. The guide groove 12 penetrates the guide body 11 in the horizontal direction and has a preset groove depth in the vertical direction. Specifically, in this embodiment, the guide body 11 has a double-layer structure, that is, two rows of guide components 1 can be placed there, thereby further improving the stability of the guide.

[0061] It should be noted that the guide groove 12 has a preset groove depth in the vertical direction, which can be determined according to specific needs, or it can be the space between two unconnected guide bodies 11.

[0062] The guide rod 13 is disposed in the guide groove 12. The guide rod 13 moves vertically within the guide groove 12. The guide rod 13 has two free ends that extend out of the guide groove 12. Specifically, in this embodiment, by disposing the guide rod 13 in the guide groove 12, the movement of the guide rod 13 is restricted, thereby further optimizing the limiting function of the air gap.

[0063] The guide limiting unit 14 is set at the bottom of the guide body 11. Specifically, in this embodiment, by setting the guide limiting unit 14 at the bottom of the guide body 11, the depth of the guide groove 12 in the guide body 11 can be changed by manual adjustment, which replaces the technology in the existing solution that cannot change the air gap limiting size, so that the installation structure provided in this embodiment is applicable to different types of trains.

[0064] Furthermore, in some embodiments, the two sides of the connecting component 2 are respectively fixedly connected to the two free ends of the guide rod 13;

[0065] When the train stops, the protective component 3 contacts the reactive aluminum plate 5, and the top of the connecting component 2 is at a preset distance from the bottom of the vehicle body. Specifically, in this embodiment, the connection between the connecting component 2 and the guide rod 13 enables relative sliding movement between the connecting component 2 and the guide component 1. Furthermore, the connection between the connecting component 2 and the guide rod 13 also ensures that when a component in the guide component 1 is damaged, it is not necessary to replace the entire structure; only the damaged component needs to be replaced. The component that is prone to damage is the connection between the connecting component 2 and the guide component 1. Therefore, this embodiment further optimizes the service life of the overall structure through the above structure.

[0066] Furthermore, in some embodiments, the guide limiting unit 14 includes:

[0067] First wedge-shaped blocks 141 are respectively disposed inside the bottom two sides of the guide body 11. The first wedge-shaped blocks 141 are embedded in the guide body 11 in a direction perpendicular to the guide rod 13. The guide body 11 and the first wedge-shaped blocks 141 are connected by long bolts 142. The first wedge-shaped blocks 141 move along the direction perpendicular to the guide rod 13 following the long bolts 142. Specifically, in this embodiment, the first wedge-shaped blocks 141 are embedded in the guide body 11 by the long bolts 142. It should be noted that the guide body 11 has reserved space for the movement of the first wedge-shaped blocks 141.

[0068] The upper surface of the first wedge block 141 is an inclined surface, so the first wedge block 141 can be moved by adjusting the long bolt 142, thereby achieving the effect of lifting the object located above the first wedge block 141.

[0069] A second wedge block 143 is disposed on the side of the first wedge block 141 away from the reactive aluminum plate 5. The guide body 11 has vertical sliding tracks on both sides. The second wedge block 143 is disposed in the sliding tracks and moves vertically in the sliding tracks. Specifically, in this embodiment, the second wedge block 143 is disposed on the edge of the guide groove 12, and the sliding track is also disposed on the edge of the guide groove 12.

[0070] The lower surface of the second wedge block 143 is inclined, so when the first wedge block 141 moves, the second wedge block 143 can be lifted or lowered to change the range of motion of the guide rod 13, thereby easily changing the maximum value of the air gap limit. A sliding groove structure is provided between the first wedge block 141 and the second wedge block 143. When the second wedge block 143 is stuck in the guide groove 12 and does not move with the first wedge block 141, the sliding groove will force the second wedge block 143 to move with the first wedge block 141.

[0071] When the train stops, the guide rod 13 abuts against the upper surface of the second wedge block 143. Specifically, in this embodiment, it should be noted that when the train stops, the magnetic levitation linear motor 4 is de-energized. Under these circumstances, the guide rod 13 falls down and fits tightly against the upper surface of the second wedge block 143.

[0072] Furthermore, in some embodiments, the guide assembly 1 further includes guide wheels 15, which are disposed at both ends of the guide rod 13. Specifically, in this embodiment, by providing guide wheels 15 at both ends of the guide rod 13, the guide rod 13 is prevented from directly contacting the second wedge block 143, thus avoiding wear on the guide rod 13 and improving the service life of the guide rod 13.

[0073] The upper surface of the second wedge block 143 has a semi-circular groove;

[0074] When the train stops, the guide wheel 15 is placed in the semi-circular groove. Specifically, in this embodiment, by providing a semi-circular groove on the upper surface of the second wedge block 143, the guide wheel 15 can fit tightly with the second wedge block 143 when the train stops, thus avoiding the problem of misalignment of the guide wheel 15 due to vibration.

[0075] Furthermore, in some embodiments, the inclination of the upper surface of the first wedge block 141 is the same as the inclination of the lower surface of the second wedge block 143. Specifically, in this embodiment, by setting the inclination of the upper surface of the first wedge block 141 and the inclination of the lower surface of the second wedge block 143 to be the same, the fit between the first wedge block 141 and the second wedge block 143 is improved, and the smoothness of the operation when adjusting the limit is optimized.

[0076] Figure 4 for Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0077] See Figure 4 It is understood that, furthermore, in some embodiments, the connection component 2 includes:

[0078] The connecting plate 21 is connected at one end to the protection component 3 and at the other end to the guide component 1. Specifically, in this embodiment, the connecting plate 21 is set as an L-shaped structure, which facilitates connection with other components and also protects the magnetic levitation linear motor 4.

[0079] A connection limiter 22 is embedded at the connection between the connecting plate 21 and the guide component 1. Specifically, in this embodiment, considering that the connection between the guide component 1 and the connecting component 2 often experiences relative displacement, which makes them more prone to wear, the connection limiter 22 is embedded at the connection between the connecting plate 21 and the guide component 1 to avoid large-area friction between the guide component 1 and the connecting component 2.

[0080] See Figure 3 Furthermore, in some embodiments, the mounting structure further includes several preload springs 6, one end of which is connected to the guide assembly 1, and the other end of which contacts the connecting assembly 2. Specifically, in this embodiment, by providing several preload springs 6 between the vehicle body and the connecting assembly 2, the vibration of the magnetic levitation linear motor 4 under the influence of other factors is reduced, and the motor can be protected from impact in case of accidents. The above-described embodiments of this application have the following advantages:

[0081] 1. This installation method allows the magnetic levitation linear motor to achieve the appropriate operating gap for optimal efficiency, enhances vehicle acceleration performance, and reduces the power consumption of the linear motor.

[0082] 2. The installation of a magnetic levitation linear motor can reduce the impact of vehicle levitation on the operating clearance.

[0083] 3. The clearance can be adjusted according to the actual working conditions.

[0084] 4. The structure is equipped with a pre-compression spring, which acts as a buffer when the motor is subjected to impact.

[0085] 5. Equipped with a protective device to ensure that the motor body is not impacted.

[0086] 6. The device operates stably and can ensure smooth up-and-down movement of the linear motor.

[0087] 7. It has good versatility and can be compatible with various linear motor specifications.

[0088] 8. Passive adjustment can reduce the impact of electrical, control, and track factors, ensuring stable operation.

Claims

1. A mounting structure for a magnetic levitation linear motor, characterized in that, The mounting structure is disposed at the bottom of the vehicle body, and the mounting structure includes: A guide assembly (1) connected to the bottom of the vehicle body; Connecting components (2) are respectively disposed on opposite sides of the guide component (1), and the guide component (1) and the connecting components (2) are slidably connected in the vertical direction; The protective component (3) is provided at the bottom of the connecting component (2), and the protective component (3) on both sides and the connecting component (2) form a motor mounting space; A magnetic levitation linear motor (4) is installed in the motor mounting space; A reactive aluminum plate (5) is disposed on the bottom of the vehicle body on the side away from the guide assembly (1), and the reactive aluminum plate (5) is at a preset distance from the magnetic levitation linear motor (4); The guiding component (1) includes: A guide body (11) has a guide groove (12) inside. The guide groove (12) penetrates the guide body (11) in the horizontal direction and has a preset groove depth in the vertical direction. A guide rod (13) is provided in the guide groove (12), the guide rod (13) moves vertically in the guide groove (12), the guide rod (13) has two free ends, the free ends extend out of the guide groove (12); The guide limiting unit (14) is provided at the bottom end of the guide body (11); The guide limiting unit (14) includes: First wedge blocks (141) are respectively disposed inside the bottom two sides of the guide body (11). The first wedge blocks (141) are embedded in the guide body (11) in a direction perpendicular to the guide rod (13). The guide body (11) and the first wedge blocks (141) are connected by long bolts (142). The first wedge blocks (141) move along the direction perpendicular to the guide rod (13) following the long bolts (142). A second wedge (143) is disposed on the side of the first wedge (141) away from the reactive aluminum plate (5). The guide body (11) has vertical sliding tracks on both sides. The second wedge (143) is disposed in the sliding tracks and moves vertically in the sliding tracks. When the train stops, the guide rod (13) abuts against the upper surface of the second wedge block (143).

2. The mounting structure for a magnetic levitation linear motor according to claim 1, characterized in that, The two sides of the connecting component (2) are fixedly connected to the two free ends of the guide rod (13); When the train stops, the protective component (3) comes into contact with the reactive aluminum plate (5), and the top of the connecting component (2) is at a preset distance from the bottom of the vehicle body.

3. The mounting structure for a magnetic levitation linear motor according to claim 1, characterized in that, The guide assembly (1) further includes guide wheels (15), which are disposed at both ends of the guide rod (13); The upper surface of the second wedge (143) has a semi-circular groove; When the train stops, the guide wheel (15) is placed in the semi-circular groove.

4. The mounting structure for a magnetic levitation linear motor according to claim 1, characterized in that, The upper surface of the first wedge (141) is an inclined surface, and the lower surface of the second wedge (143) is an inclined surface; The inclination of the upper surface of the first wedge (141) is the same as the inclination of the lower surface of the second wedge (143).

5. The mounting structure for a magnetic levitation linear motor according to claim 1, characterized in that, The connection component (2) includes: A connecting plate (21), one end of which is connected to the protective component (3), and the other end of which is connected to the guide component (1); A connection limiter (22) is embedded at the connection between the connecting plate (21) and the guide assembly (1).

6. The mounting structure for a magnetic levitation linear motor according to claim 5, characterized in that, The mounting structure also includes several preload springs (6), one end of which is connected to the guide assembly (1), and the other end of which is in contact with the connecting assembly (2).

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