Snow skirt for a rail vehicle and a medium-low speed maglev vehicle

Abstract

This invention relates to the field of rail vehicle technology, and more particularly to a snow skirt for rail vehicles, which is installed on the periphery of the bottom of the rail vehicle body, and the installation height of the snow skirt is at least partially lower than that of the lower skirt on the vehicle body; the snow skirt includes a skirt body and a first flexible buffer member; the skirt body is detachably installed on the periphery of the bottom of the rail vehicle body; the first flexible buffer member is installed on the top of the skirt body. A medium-low speed maglev vehicle is also provided. Compared with the prior art, the snow skirt for rail vehicles and the medium-low speed maglev vehicle of this invention can improve the snow protection capability of vehicles.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and more particularly to a snow skirt for a rail vehicle and a medium- and low-speed maglev vehicle. Background Technology

[0002] Rail vehicles refer to all vehicles that rely on rail guidance for movement. Maglev vehicles are a special type of vehicle that uses electromagnetic force to achieve contactless levitation and guidance between the vehicle body and the rail, and is driven by a linear motor.

[0003] Currently, most commercially operated medium- and low-speed maglev lines use viaducts or tunnels, with track cross-sections of either single-span box girder or U-shaped beam concrete structures. In snowy conditions, the U-shaped beam structure helps reduce snow particle deposition in the suspension frame area under the train; however, even so, its protective effect on the suspension frame (especially the front of the vehicle) remains limited. For maglev lines using single-span box girder structures, the coupling effect of higher speeds and strong crosswinds easily leads to a large accumulation of snow particles under the train and at the front suspension frame, increasing the train's weight and affecting levitation performance and driving safety.

[0004] In existing technologies, maglev vehicles typically have a lower skirt on the underside. This lower skirt primarily serves to shield and protect undercarriage equipment, cable connectors, and other components, while also reducing lateral wind resistance to some extent. However, the lower skirt is usually installed at the same height as the lower surface of the car body's sliding platform, while the upper surface of the linear motors mounted on the suspension frame is much lower than this lower surface. Therefore, during elevated operation in snowy weather, due to air turbulence, existing lower skirts are insufficient to effectively prevent snow particles from entering the suspension frame area under the car, thus failing to provide snow protection.

[0005] Therefore, how to design a snow skirt that can adapt to the snowy operating environment in order to effectively solve the problem of snow accumulation on maglev vehicles has become an urgent technical problem to be solved in this field. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a snow skirt for rail vehicles, which is installed at the bottom of the vehicle body. The installation height of the snow skirt is at least partially lower than the lower skirt. This snow skirt effectively prevents airborne snow particles from accumulating on the windward or lateral sides (due to turbulence), thus effectively solving the problem of snow accumulation on vehicles during snowy weather. Furthermore, a first flexible buffer is provided at the top of the snow skirt, effectively preventing interference between the snow skirt and the vehicle's structure when the train is operating under special conditions.

[0007] A snow skirt for a rail vehicle, for installation on the periphery of the bottom of the rail vehicle body, wherein the installation height of the snow skirt is at least partially lower than that of the lower skirt on the vehicle body. The snow skirt of the rail vehicle includes a skirt body and a first flexible buffer member; The skirt body is designed for detachable installation on the periphery of the bottom of the rail vehicle body; The first flexible buffer is installed on top of the skirt body.

[0008] Preferably, the first flexible buffer is detachably mounted on top of the skirt body.

[0009] Preferably, the skirt panel body includes a skirt panel frame and an inspection door panel; The skirt frame is provided with an inspection port that passes through the skirt frame. The inspection door panel is rotatably mounted on the skirt frame to open and close the inspection port.

[0010] Preferably, the skirt frame or the access door is provided with a lock, which is used to lock the access door onto the skirt frame when the access door closes the access opening.

[0011] Preferably, the inspection door panel is provided with a support member, which is used to support the inspection door panel when the inspection door panel is opened.

[0012] Preferably, it also includes an anti-detachment component, one end of which is fixed to the skirt frame and the other end is used to fix to the suspension bracket connecting seat of the rail vehicle.

[0013] Preferably, it also includes a second flexible buffer, and the second flexible buffer is respectively provided on both sides of the skirt frame.

[0014] Preferably, the top and side of the skirt frame are respectively provided with slots, the first flexible buffer is detachably installed on the top of the skirt frame through the slots, and the second flexible buffer is detachably installed on the side of the skirt frame through the slots.

[0015] Preferably, both the first flexible buffer and the second flexible buffer adopt a composite structure of a rigid metal skeleton and flexible bristles pressed together.

[0016] Preferably, the bottom of the skirt frame is provided with a snap-fit, which is used to engage with the plug-in support installed on the suspension frame arm connecting seat.

[0017] A medium-low speed maglev vehicle includes a vehicle body and a snow skirt assembly installed on the periphery of the bottom of the vehicle body, wherein the installation height of the snow skirt assembly is at least partially lower than that of the lower skirt on the vehicle body. The snow skirt assembly includes a front snow skirt assembly, a rear snow skirt assembly, and a side snow skirt assembly. The front snow skirt assembly is provided at the front end of the bottom of the vehicle body, the rear snow skirt assembly is provided at the rear end of the bottom of the vehicle body, and the side snow skirt assemblies are provided on both sides of the bottom of the vehicle body. At least one of the front snow skirt assembly, the rear snow skirt assembly, and the side snow skirt assembly includes a snow skirt for a rail vehicle as described in any of the above descriptions.

[0018] Preferably, the front snow skirt assembly includes a middle skirt and end skirts located on both sides of the middle skirt. The middle skirt is detachably mounted on the anti-side roll beam of the vehicle body, and the end skirts are detachably mounted on the suspension frame support bracket of the vehicle body. The middle skirt and the two end skirts are snow skirts of rail vehicles as described in any one of the above descriptions; The rear snow skirt assembly adopts the same structure as the front snow skirt assembly.

[0019] Preferably, the side snow skirt assembly includes multiple side snow skirts, each of which is arranged sequentially along the length of the vehicle body, and adjacent side snow skirts are spaced apart from each other; each side snow skirt adopts the snow skirt of a rail vehicle as described in any one of the above descriptions.

[0020] Preferably, it also includes a mounting base and a plug-in support; The mounting base and the plug-in support are respectively mounted on the suspension frame support arm connecting base of the vehicle body; The bottom of the side snow skirt is locked in place with the plug-in support, and the side snow skirt is detachably mounted on the mounting base.

[0021] Preferably, the plug-in support is provided with a protruding structure, which is used to engage with the structure at the bottom of the side snow skirt, and the protruding structure is provided with a flexible buffer layer.

[0022] Compared with the prior art, the snow skirt for rail vehicles provided by the present invention has the following beneficial effects: The snow skirt for rail vehicles provided by this invention is installed at a height at least partially lower than the original lower skirt on the vehicle body. When the rail vehicle is operating on an elevated track in snowy weather, this snow skirt can form an additional physical barrier under the vehicle body, effectively preventing airborne snow particles from flying in and accumulating in the suspension frame area. Compared to existing technical solutions that only install the lower skirt, this invention significantly reduces the amount of snow entering the suspension frame area under the vehicle, avoiding the increased train weight, decreased suspension performance, and driving safety hazards caused by large accumulations of snow particles, and significantly improving the adaptability and safety of maglev vehicles in icy and snowy weather.

[0023] The snow skirt of this invention is provided with a first flexible buffer at its top. When the vehicle is under special operating conditions (such as overcharged or deflated air springs, or emergency braking causing the vehicle body to "nod" in extreme conditions), the vertical relative motion between the vehicle body and the snow skirt intensifies. The first flexible buffer can effectively absorb impact and buffer contact force through its own elastic deformation, thereby preventing rigid collisions or jamming between the snow skirt and the vehicle body structure (such as the lower skirt, slide, etc.). This protects the skirt and vehicle body components from damage, ensures the normal operation of the vehicle under extreme conditions, and effectively solves the problem of the vertical clearance required under extreme conditions. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of a medium-low speed maglev vehicle provided in one embodiment; Figure 2 A schematic diagram of the structure of a front protective skirt assembly provided in one embodiment; Figure 3 A schematic diagram of the end skirt provided in one embodiment; Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure along the AA direction; Figure 5 A schematic diagram of the structure at the installation position of the side snow skirt panel according to one embodiment; Figure 6 A schematic diagram of the structure of a side snow skirt provided in one embodiment; Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure along the BB direction is shown. Figure 8A schematic diagram of the structure of a mounting base provided in one embodiment; Figure 9 for Figure 8 A schematic diagram of the mounting bracket from another angle is shown. Figure 10 This is a schematic diagram of the structure of a plug-in support provided in one embodiment. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that when a component is referred to as "mounted on", "fixed on", or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0028] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0029] This invention provides a snow skirt for rail vehicles, installed on the periphery of the bottom of the rail vehicle body, with the installation height of the snow skirt at least partially lower than the lower skirt on the vehicle body. The snow skirt includes a skirt body and a first flexible buffer member. The skirt body is detachably installed on the periphery of the bottom of the rail vehicle body; the first flexible buffer member is installed on top of the skirt body. The snow skirt forms an additional physical barrier at the bottom of the vehicle body, effectively preventing airborne snow particles from entering from the windward or side surfaces (turbulence effect) and accumulating in the suspension frame area, thus avoiding increased train weight, decreased suspension performance, and safety hazards caused by excessive snow particle accumulation. Furthermore, the first flexible buffer member on top of the snow skirt effectively prevents interference between the snow skirt and the vehicle's structure under special operating conditions.

[0030] Please refer to the following: Figures 1 to 10 In one embodiment, a snow skirt 100 for a rail vehicle is provided, which is mainly used to solve the problem in the prior art that when rail vehicles are running in snowy weather, snow easily accumulates under the vehicle, affecting vehicle performance and driving safety.

[0031] The snow skirt 100 of the rail vehicle is used to be installed on the periphery of the bottom of the rail vehicle body, and the installation height of the snow skirt 100 is at least partially lower than the lower skirt on the vehicle body. Specifically, "the installation height of the snow skirt 100 is at least partially lower than the lower skirt on the vehicle body" means that after the snow skirt 100 is installed on the bottom of the rail vehicle body, the overall installation height of the snow skirt 100 is lower than the lower skirt, or a local area of ​​the snow skirt 100 is lower than the lower skirt. It is sufficient that after the snow skirt 100 is installed, at least a portion of it is located below the lower skirt to provide snow protection.

[0032] The snow skirt 100 of the rail vehicle includes a skirt body 10 and a first flexible buffer 20. The first flexible buffer 20 is a component capable of elastic deformation under stress. When the first flexible buffer 20 comes into contact with or collides with other structures, it deforms under stress, thus preventing damage to components caused by rigid contact. The skirt body 10 is detachably installed on the bottom periphery of the rail vehicle body. Specifically, the snow skirt 100 is detachably installed on the vehicle body via the skirt body 10. The first flexible buffer 20 is installed on top of the skirt body 10. By installing the first flexible buffer 20 on top of the skirt body 10, rigid contact between the skirt body 10 and the vehicle body can be avoided under special operating conditions, thus preventing damage to components due to rigid contact. It should be noted that after the snow skirt 100 of the rail vehicle is installed on the vehicle body, the first flexible buffer 20 does not need to directly contact the structure at the bottom of the vehicle body. The first flexible buffer 20 can be designed with a certain gap with the structure at the bottom of the vehicle body. The first flexible buffer 20 will only contact the structure at the bottom of the vehicle body under special working conditions. It is mainly used to prevent damage to the component structure and affect the normal operation of the vehicle under special working conditions.

[0033] Understandably, in existing technologies, maglev vehicles typically have a lower skirt at the bottom. However, the purpose of the lower skirt is to shield and protect some undercarriage equipment, cable plugs, etc., and to reduce some wind resistance on the sides of the train. The lower skirt is installed at the same height as the lower surface of the car body slide, while the upper surface of the linear motor on the suspension frame is much lower than the lower surface of the car body slide. When the vehicle is running on elevated tracks in snowy weather, the lower skirt cannot provide snow protection due to air turbulence.

[0034] The snow skirt 100 of the rail vehicle provided in this embodiment is installed at least partially lower than the original lower skirt on the vehicle body. When the rail vehicle is operating on an elevated track in snowy weather, the skirt body 10 can form an additional physical barrier at the bottom of the vehicle body, effectively preventing airborne snow particles from flying in and accumulating in the suspension frame area. Compared with the existing technical solution that only installs the lower skirt, this invention significantly reduces the amount of snow entering the suspension frame area under the vehicle, avoiding the increased train weight, decreased suspension performance, and driving safety hazards caused by the large accumulation of snow particles, and significantly improving the adaptability and safety of maglev vehicles in icy and snowy weather.

[0035] Furthermore, by providing the first flexible buffer 20 at the top of the skirt body 10, the vertical relative movement between the vehicle body and the snow skirt intensifies when the vehicle is under special operating conditions (such as overcharged or deflated air springs, or emergency braking causing the vehicle body to "nod"). The first flexible buffer can effectively absorb impact and buffer contact force through its own elastic deformation, thereby preventing rigid collisions or jamming between the snow skirt and the vehicle structure (such as the lower skirt, slide, etc.). This protects the skirt and vehicle body components from damage, ensures the normal operation of the vehicle under extreme operating conditions, and effectively solves the problem of the vertical clearance required under extreme operating conditions.

[0036] Preferably, in one embodiment, the first flexible buffer 20 is detachably mounted on top of the skirt body 10. By detachably mounting the first flexible buffer 20, when the first flexible buffer 20 wears out, only the first flexible buffer 20 needs to be removed and replaced, without the need to replace the entire snow skirt 100 of the rail vehicle, thus reducing the cost of vulnerable parts.

[0037] Preferably, in one embodiment, the skirt body 10 includes a skirt frame 11 and an inspection door 12. The skirt frame 11 has an inspection port that passes through it. The inspection door 12 is rotatably mounted on the skirt frame 11 to open and close the inspection port. The inspection port and the inspection door 12 facilitate rapid maintenance of the vehicle after it returns to the depot from snowy conditions. During maintenance, operators do not need to completely disassemble the snow skirt 100 of the rail vehicle; they only need to rotate the inspection door 12 to inspect, repair, or perform emergency operations on undercarriage equipment (such as linear motors, suspension frame components, etc.) and cable plugs through the inspection port.

[0038] Specifically, in one embodiment, the access door panel 12 is rotatably mounted on the skirt frame 11 by means of a hinge 13 connecting the access door panel 12 to the skirt frame 11. Preferably, in one embodiment, the access door panel 12 is connected to the skirt frame 11 by multiple sets of hinges 13, thereby further improving the reliability of the installation of the access door panel 12. More specifically, in one embodiment, the hinge 13 is located at the top of the access door panel 12.

[0039] Specifically, in one embodiment, the access panel is located in the central region of the skirt panel frame 11. More specifically, in one embodiment, the skirt panel frame 11 adopts a frame aluminum profile structure; more specifically, the skirt panel frame 11 can be welded from lightweight hollow aluminum profiles. That is, the skirt panel body 10 is surrounded by a frame aluminum profile structure, while the access panel 12 is located in the center.

[0040] Specifically, in one embodiment, the access panel 12 adopts a sandwich panel structure, meaning that the access panel 12 is a composite board structure. The access panel 12 achieves a balance between "lightweight" and "high strength" through a combination of "two high-strength panels + lightweight thick core". By using aluminum profiles and a sandwich panel structure, the skirt panel body 10 becomes lighter and easier to install.

[0041] Preferably, in one embodiment, a lock 30 is provided on the skirt frame 11 or the access door panel 12. The lock 30 is used to lock the access door panel 12 onto the skirt frame 11 when the access door panel 12 closes the access opening. By providing the lock 30, the position of the access door panel 12 can be stabilized when maintenance is not required, ensuring that the access door panel 12 will not be accidentally opened, thereby improving the stability and safety of vehicle operation.

[0042] Specifically, in one embodiment, the lock 30 is disposed on the access panel 12, thereby allowing for quick and convenient locking. More specifically, in one embodiment, the lock 30 is a square hole lock. When it is necessary to lock the access panel 12, the tongue of the lock 30 is engaged with the mating part on the skirt frame 11, thereby stabilizing the relative position of the access panel 12 and the skirt frame 11 and preventing the access panel 12 from accidentally flipping over. Specifically, a countersunk platform is provided at the mating part between the skirt frame 11 and the access panel 12, and the access panel 12 is pressed tightly by the tongue of the lock 30 after it is closed.

[0043] Preferably, in one embodiment, a support member 40 is provided on the inspection door panel 12. The support member 40 is used to support the inspection door panel 12 when it is opened. That is, when the inspection door panel 12 is rotated and the inspection opening is opened, the support member 40 can support the inspection door panel 12 and maintain its position. The support member 40 can reliably support the inspection door panel 12 when it is open, preventing accidental closure and improving the safety and convenience of maintenance operations.

[0044] Specifically, in one embodiment, the support member 40 is a support rod, which can be fixed to the inspection door panel 12 by a ring buckle. One end of the support rod is connected to the inspection door panel 12, and the other end can be inserted into the positioning hole on the door frame of the skirt frame 11 when the inspection door panel 12 is open, so as to maintain the open state of the inspection door panel 12. Specifically, a hole larger than the diameter of the support rod can be provided on the door frame of the skirt frame 11. The support rod can be inserted into the hole by rotating at any angle. After the inspection door panel 12 is opened, the support rod can be rotated and then inserted into the hole of the skirt frame 11 to support and fix the inspection door panel 12.

[0045] Preferably, in one embodiment, the snow skirt 100 of the rail vehicle further includes an anti-detachment component 50. One end of the anti-detachment component 50 is fixed to the skirt frame 11, and the other end of the anti-detachment component 50 is used to fix it to the suspension frame support bracket on the rail vehicle body. By providing the anti-detachment component 50, even if the main connection structure between the skirt frame 11 and the vehicle body fails unexpectedly, the anti-detachment component 50 can still restrain the skirt frame 11 to the suspension frame, preventing it from falling onto the track as a whole, thereby avoiding secondary safety accidents and significantly improving the safety redundancy of the skirt installation.

[0046] Specifically, in one embodiment, the other end of the anti-detachment component 50 is used to fix it to the suspension frame support arm connecting seat.

[0047] Specifically, in one embodiment, the anti-detachment component 50 is a steel wire rope.

[0048] Preferably, in one embodiment, the snow skirt 100 of the rail vehicle further includes a second flexible buffer 60, which is respectively provided on both sides of the skirt frame 11. That is, the second flexible buffer 60 is provided on both sides of the skirt frame 11. The provision of the second flexible buffer 60 can further prevent lateral airflow carrying snow particles from entering through the gaps on the side of the skirt, and also plays the role of lateral buffering and noise reduction.

[0049] In one embodiment, the second flexible buffer 60 is mainly used when the snow skirts 100 of the rail vehicle are installed on the side of the vehicle body. It primarily prevents rigid contact between adjacent snow skirts 100 of the rail vehicle and reduces the gap between adjacent snow skirts 100, thus improving snow protection. In other words, when the snow skirts 100 of the rail vehicle are installed on the side of the vehicle body, the second flexible buffer 60 solves both the problem of preventing interference between the snow skirts 100 on the radial side of the vehicle when it passes through a horizontal curve, and the problem of excessive gaps between adjacent snow skirts 100 on the vest side.

[0050] Preferably, in one embodiment, the top and side of the skirt frame 11 are respectively provided with slots. The first flexible buffer 20 is detachably installed on the top of the skirt frame 11 through the slots, and the second flexible buffer 60 is detachably installed on the side of the skirt frame 11 through the slots. That is, in this embodiment, both the first flexible buffer 20 and the second flexible buffer 60 are fixed by a slot-type structure on the skirt frame 11. When installing the first flexible buffer 20 and the second flexible buffer 60, they can be installed by inserting them into the skirt frame 11. In addition, a limiting block can be provided in the slot to prevent the first flexible buffer 20 and the second flexible buffer 60 from sliding, and also to facilitate the replacement of the first flexible buffer 20 and the second flexible buffer 60 after wear. The slot-type installation structure makes it easy to replace easily worn and aged buffer components individually without replacing the entire skirt body 10, thus reducing maintenance costs.

[0051] Preferably, in one embodiment, both the first flexible buffer 20 and the second flexible buffer 60 adopt a composite structure of a rigid metal frame and flexible bristles pressed together. That is, the first flexible buffer 20 includes a rigid metal frame and flexible bristles mounted on the rigid metal frame. The first flexible buffer 20 can be stably mounted on the skirt frame 11 through the rigid metal frame, while the flexible bristles provide flexible cushioning. Similarly, the second flexible buffer 60 includes a rigid metal frame and flexible bristles mounted on the rigid metal frame. The second flexible buffer 60 can be stably mounted on the skirt frame 11 through the rigid metal frame, while the flexible bristles provide flexible cushioning.

[0052] Specifically, in one embodiment, the first flexible buffer 20 and the second flexible buffer 60 are composed of industrial brushes with stainless steel edging keels, wherein the length of the brushes can be determined according to the vehicle's extreme working conditions and the required movement gap when passing through curves.

[0053] Preferably, in one embodiment, the bottom of the skirt frame 11 is provided with a locking slot, which is used to engage with the plug-in support 300 installed on the vehicle body. That is, in this embodiment, the bottom of the skirt frame 11 is provided with a structure for engaging with other components. This allows for a "top-mounted, bottom-locked" connection method when installing the snow skirt 100 of the rail vehicle, making installation labor-saving and quick. This ensures the precise positioning and stable connection of the snow skirt 100 under vehicle vibration conditions while allowing for certain installation tolerances, facilitating on-site assembly and adjustment. Specifically, in one embodiment, the locking slot is used to engage with the plug-in support 300 installed on the suspension frame arm connecting seat.

[0054] Specifically, in one embodiment, the skirt body 10 is detachably bolted and mounted on the periphery of the bottom of the rail vehicle body. More specifically, in one embodiment, the skirt body 10 can be detachably bolted and mounted on a mounting base 200 on the suspension frame support arm. Preferably, in one embodiment, the skirt frame 11 is provided with four sets of support holes, which not only allows it to be bolted to the mounting base 200 onto the suspension frame support arm connecting seat, but also more effectively allows the bolt heads to be recessed without affecting the vehicle's aesthetics.

[0055] Meanwhile, in one embodiment, a medium-low speed maglev vehicle 1000 is also provided, which includes a vehicle body 400 and a snow skirt assembly 500 installed on the bottom periphery of the vehicle body 400. The installation height of the snow skirt assembly 500 is at least partially lower than that of the lower skirt on the vehicle body 400. Wherein, "the installation height of the snow skirt assembly 500 is at least partially lower than that of the lower skirt on the vehicle body 400" means that the overall installation height of the snow skirt assembly 500 is lower than that of the lower skirt, or that the installation height of a local area of ​​the snow skirt assembly 500 is lower than that of the lower skirt.

[0056] The snow skirt assembly 500 includes a front snow skirt assembly 510, a rear snow skirt assembly 520, and a side snow skirt assembly 530. The front snow skirt assembly 510 is located at the front end of the bottom of the vehicle body 400, the rear snow skirt assembly 520 is located at the rear end of the bottom of the vehicle body 400, and the side snow skirt assemblies 530 are located on both sides of the bottom of the vehicle body 400. At least one of the front snow skirt assembly 510, the rear snow skirt assembly 520, and the side snow skirt assembly 530 includes the snow skirt 100 of the rail vehicle. That is, the snow skirt applied at at least one location in the snow skirt assembly 500 is the snow skirt 100 of the rail vehicle.

[0057] Understandably, while existing rail vehicles may have side skirts, these skirts do not provide snow protection, and there are no skirts above the tracks at the front and rear of the vehicle.

[0058] The medium-low speed maglev vehicle 1000 provided in this embodiment, through the arrangement of the front snow skirt assembly 510, the rear snow skirt assembly 520 and the side snow skirt assembly 530, forms a circle around the vehicle from the front end, the rear end to the sides, effectively preventing snow particles from being drawn into the vehicle during elevated operation. It can form a full-circumferential snow protection enclosure for the suspension frame area under the vehicle, minimizing the entry of snow particles from all directions, and effectively preventing airborne snow particles from accumulating on the equipment and linear motors under the vehicle.

[0059] Specifically, in one embodiment, a fixing point is provided on the suspension bracket connecting seat of the vehicle body 400 for installing the snow skirt of the snow skirt assembly 500.

[0060] Preferably, in one embodiment, the snow skirt in the snow skirt assembly 500 is provided with a small gap from the lower skirt and the vehicle body slide, so that the vehicle can contact the first flexible buffer 20 on the snow skirt 100 of the rail vehicle under extreme working conditions, thereby avoiding interference problems.

[0061] Preferably, in one embodiment, the front snow skirt assembly 510 includes a middle skirt 511 and end skirts 512 located on both sides of the middle skirt 511. The middle skirt 511 is detachably mounted on the anti-roll beam of the vehicle body 400, and the end skirts 512 are detachably mounted on the suspension frame support connecting seat of the vehicle body 400. The middle skirt 511 and the two end skirts 512 are both snow skirts 100 of the rail vehicle. That is, the first flexible buffer 20 is provided in both the middle skirt 511 and the two end skirts 512. In one embodiment, the middle skirt 511 and the two end skirts 512 can adopt an integral plate structure without the inspection door panel 12, the hinge 13, the lock 30, the support 40, etc. In addition, the second flexible buffer 60 may not be provided in the middle skirt 511 and the two end skirts 512 as required. By adopting the separate structure of the middle skirt 511 and the end skirt 512, which are respectively installed on the anti-side roll beam and the suspension frame support arm connecting seat, it not only adapts to the complex installation space at the front of the maglev vehicle, but also achieves targeted protection for the key areas of snow accumulation in the eddy current zone at the front of the vehicle.

[0062] Preferably, in one embodiment, the rear snow skirt assembly 520 adopts the same structure as the front snow skirt assembly 510. That is, the rear snow skirt assembly 520 also adopts a three-plate structure, and the rear snow skirt assembly 520 also includes the middle skirt 511 and the end skirts 512 located on both sides of the middle skirt 511.

[0063] Specifically, in one embodiment, the intermediate skirt 511 is mounted on the suspension frame support connecting seat of the vehicle body 400. Specifically, the suspension frame support connecting seat is provided with mounting bottom holes, and the intermediate skirt 511 can be fastened to the suspension frame support connecting seat by corresponding connecting seats and bolts.

[0064] Specifically, in one embodiment, the end skirt 512 is mounted on the anti-side roll beam of the vehicle body 400. Specifically, the anti-side roll beam is provided with mounting bottom holes, and the end skirt 512 can be fastened to the anti-side roll beam by corresponding connecting seats and bolts.

[0065] Preferably, in one embodiment, both the intermediate skirt plate 511 and the end skirt plates 512 can be assembled from thin aluminum plates bent together with the first flexible buffer member 20. More preferably, the skirt plate body 10 of the intermediate skirt plate 511 and the end skirt plates 512 is connected to the first flexible buffer member 20 at the upper end by riveting or welding to form a C-shaped insert, which effectively solves the problem of installing or replacing the first flexible buffer member 20.

[0066] Preferably, in one embodiment, the side snow skirt assembly 530 includes a plurality of side snow skirts 531, each of which is arranged sequentially along the length of the vehicle body 400, with adjacent side snow skirts 531 spaced apart from each other; each side snow skirt 531 adopts the snow skirt 100 of the rail vehicle. That is, each side snow skirt 531 is provided with the first flexible buffer 20. In one embodiment, the structure of each side snow skirt 531 is the same, and each side snow skirt 531 includes the first flexible buffer 20, the second flexible buffer 60, the skirt frame 11, the inspection door panel 12, the hinge 13, the lock 30, the support member 40, and the anti-detachment member 50. The side snow skirt 531 is connected by a flexible connection and has a reasonable and small gap with the car body 400. In addition, the adjacent side snow skirts 531 are also provided with a reasonable and small gap according to the compression amount of the vehicle on the curve, so as to avoid the brushes of the train being squeezed and worn under normal working conditions, and effectively meet the extreme working conditions of the train and the curve passage without being affected.

[0067] Preferably, in one embodiment, the medium-low speed maglev vehicle 1000 further includes a mounting base 200 and a plug-in support 300, the mounting base 200 and the plug-in support 300 being respectively mounted on the suspension frame support arm connecting seat of the vehicle body 400. The bottom of the side snow skirt 531 is clamped to the plug-in support 300, and the side snow skirt 531 is detachably mounted on the mounting base 200. Specifically, mounting holes for mounting the skirt are provided on the support arm connecting seats on both sides of the vehicle body 400, and the mounting base 200 and the plug-in support 300 can be bolted to the mounting holes of the support arm connecting seats. When installing the side snow skirt 531, first install the mounting base 200 and the plug-in support 300 onto the support arm connecting seat with bolts. Then, quickly hook the side snow skirt 531 onto the plug-in support 300. Finally, tighten the fastening bolts between the side snow skirt 531 and the mounting base 200. In one embodiment, the skirt frame 11 is provided with four sets of support holes, which not only fixes it to the mounting base 200 onto the suspension frame support arm connecting seat with bolts, but also more effectively allows the bolt heads to sink in without affecting the vehicle's aesthetics.

[0068] Preferably, in one embodiment, the plug-in support 300 is provided with a protruding structure 310, which is used to engage with the structure at the bottom of the side snow skirt 531, and the end of the protruding structure 310 is provided with a flexible buffer layer 320.

[0069] Specifically, the side snow skirt 531 is secured to the protruding structure 310 via a snap-fit ​​at the bottom of the skirt frame 11. The side snow skirt 531 can be installed using a "top installation, bottom snap-fit" connection method, which is labor-saving and quick. The use of quick plug-in and bolt connections not only allows for rapid installation in emergency situations but also effectively avoids the impact on vehicles.

[0070] Specifically, in one embodiment, the plug-in support 300 is made of aluminum alloy sheet bent and welded with reinforcing ribs. The flexible buffer layer 320 is specifically an industrial blanket adhered to the protruding structure 310 at the end of the plug-in support 300, and its function is to prevent abnormal noise from occurring at the slot of the side snow skirt 531 during vehicle operation.

[0071] Specifically, in one embodiment, the mounting base 200 is made of thin-walled steel plate bent and welded, and lightweight measures are taken to set notches. A through hole is provided on the bottom surface, and it is fixed to the suspension frame support connecting seat screw hole by bolts. Welded nuts 210 for fastening the skirt plate are provided on the side of the mounting base 200 to facilitate fastening the bolts from the outside.

[0072] It is understood that the snow skirt assembly 500 can be installed according to the actual usage environment (e.g., on a snowy day or when it is about to snow), while in other normal weather conditions, the snow skirt assembly 500 may not need to be installed. For example, before snowfall, it can be quickly installed on the suspension frame by the operator before departure. The snow skirt 100 of the rail vehicle adopts a quick-installation connection structure (quick plug-in + bolt fastening connection structure), and its connection and fastening position is a suspension frame, which can realize quick disassembly and installation.

[0073] The snow skirt assembly 500 not only prevents snowflakes from adhering to the suspension frame, but also provides protection for components such as undercarriage electrical equipment, linear traction motors, suspension electromagnets, suspension sensors, brake calipers that affect train safety, and equipment cable plugs.

[0074] The snow skirt assembly 500 has a simple and reliable structure, uses lightweight materials, and is suitable for snow protection installation on medium and low speed maglev vehicles operating in snowy weather. It solves the following problems: 1. The maglev line adopts a solid box girder or U-shaped beam concrete structure. The upper track of the maglev line is a track panel + sleeper structure. When the train runs on the elevated line in snowy weather, due to the airflow turbulence effect, a large amount of snow particles accumulate near the linear motor, undercarriage equipment and plugs, which affects the train's energy consumption, levitation force and driving safety.

[0075] 2. The suspension frame is connected to the car body via air springs. In cases of overcharging, deflating, or emergency braking of the train, snow skirts are installed either by connecting the suspension frame support arm or by extending the car body downwards. A vertical safety clearance must be provided to prevent movement interference.

[0076] 3. On horizontal or vertical curve sections, when adjacent suspension frame arms are in three relative motion conditions (lateral, vertical, and spatial), a snow skirt must be installed to ensure that the curved operation does not interfere with the snow skirt.

[0077] 4. Maglev vehicles have numerous and densely arranged undercarriage equipment, cables, and pipelines. The snow skirts installed must meet the daily maintenance needs of the trains when they return to the depot.

[0078] Compared with existing technologies, the medium-low speed maglev vehicle 1000 described above has at least the following advantages: 1. Snow skirts 100 are installed under the front, sides and rear of the vehicle (after the vehicles are coupled, the rear becomes the middle end, and the air turbulence makes it easy for snow to accumulate). These effectively prevent airborne snow particles from flying into the surface of the electromagnet suspension sensor at the accumulation end from the windward side, as well as from flying into and accumulating on the surface of equipment, cable plugs and linear motors from the side. They also solve the problem of turbulent snow accumulation at the rear of the car.

[0079] 2. The upper surface of the snow skirt 100 of all the aforementioned rail vehicles is provided with soft-joint brush material (the first flexible buffer 20), which not only solves the interference problem that occurs when the vehicle loses air pressure or the vehicle "nods" during emergency braking, but also effectively solves the vertical clearance required under extreme working conditions.

[0080] 3. In the side snow skirt assembly 530, a soft-joint brush material (the second flexible buffer 60) is also provided between each adjacent skirt, which not only solves the problem of no interference between the snow skirts on the centripetal side when the vehicle passes through a flat curve, but also solves the problem of excessive gap between adjacent skirts on the vest side.

[0081] 4. The snow skirt in the side snow skirt assembly 530 is installed using a plug-in + screw fastening method, which effectively solves the problem of improving the installation efficiency of the snow skirt in emergency situations.

[0082] 5. The soft-joint brush structure of the snow skirt at the front, sides and rear is fixed by a slot limiting method, which solves the problem that only the brush skeleton needs to be replaced after the brush wears out, instead of replacing the entire snow skirt, thus reducing the cost of vulnerable parts.

[0083] 6. The snow skirt in the side snow skirt assembly 530 adopts a frame aluminum profile structure and is provided with a maintenance door panel with a square hole lock in the middle, which facilitates the quick maintenance of the equipment and cable plugs under the vehicle after the vehicle returns to the depot in snowy weather.

[0084] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. A snow skirt for a rail vehicle, characterized in that, For installation on the bottom periphery of the body of a rail vehicle, wherein the installation height of the snow skirt of the rail vehicle is at least partially lower than that of the lower skirt on the body. The snow skirt of the rail vehicle includes a skirt body and a first flexible buffer member; The skirt body is designed for detachable installation on the periphery of the bottom of the rail vehicle body; The first flexible buffer is installed on top of the skirt body.

2. The snow skirt for a rail vehicle according to claim 1, characterized in that, The first flexible buffer is detachably mounted on top of the skirt body.

3. The snow skirt for a rail vehicle according to claim 1, characterized in that, The skirt panel body includes a skirt panel frame and an inspection door panel; The skirt frame is provided with an inspection port that passes through the skirt frame. The inspection door panel is rotatably mounted on the skirt frame to open and close the inspection port.

4. The snow skirt for a rail vehicle according to claim 3, characterized in that, The skirt frame or the inspection door is provided with a lock, which is used to lock the inspection door to the skirt frame when the inspection door closes the inspection opening.

5. The snow skirt for a rail vehicle according to claim 3, characterized in that, The maintenance door panel is provided with a support member, which is used to support the maintenance door panel when it is opened.

6. The snow skirt for a rail vehicle according to claim 3, characterized in that, It also includes an anti-detachment component, one end of which is fixed to the skirt frame and the other end is used to fix to the suspension bracket connecting seat of the rail vehicle.

7. The snow skirt for a rail vehicle according to claim 3, characterized in that, It also includes a second flexible buffer, which is provided on both sides of the skirt frame.

8. The snow skirt for a rail vehicle according to claim 7, characterized in that, The top and side of the skirt frame are respectively provided with slots. The first flexible buffer is detachably installed on the top of the skirt frame through the slots, and the second flexible buffer is detachably installed on the side of the skirt frame through the slots.

9. The snow skirt for a rail vehicle according to claim 7, characterized in that, Both the first flexible buffer and the second flexible buffer adopt a composite structure of a rigid metal skeleton and flexible bristles pressed together.

10. The snow skirt for a rail vehicle according to claim 3, characterized in that, The bottom of the skirt frame is provided with a snap-fit, which is used to engage with the plug-in support installed on the suspension frame arm connecting seat.

11. A medium-low speed maglev vehicle, characterized in that, Includes a vehicle body and a snow skirt assembly installed on the bottom periphery of the vehicle body, wherein the installation height of the snow skirt assembly is at least partially lower than that of the lower skirt on the vehicle body; The snow skirt assembly includes a front snow skirt assembly, a rear snow skirt assembly, and a side snow skirt assembly. The front snow skirt assembly is provided at the front end of the bottom of the vehicle body, the rear snow skirt assembly is provided at the rear end of the bottom of the vehicle body, and the side snow skirt assemblies are provided on both sides of the bottom of the vehicle body. At least one of the front snow skirt assembly, the rear snow skirt assembly, and the side snow skirt assembly includes a snow skirt for a rail vehicle as described in any one of claims 1 to 10.

12. The medium-low speed maglev vehicle according to claim 11, characterized in that, The front snow skirt assembly includes a middle skirt and end skirts located on both sides of the middle skirt. The middle skirt is detachably mounted on the anti-side roll beam of the vehicle body, and the end skirts are detachably mounted on the suspension frame support bracket of the vehicle body. The middle skirt and the two end skirts are snow skirts of rail vehicles as described in any one of claims 1 to 2; The rear snow skirt assembly adopts the same structure as the front snow skirt assembly.

13. The medium-low speed maglev vehicle according to claim 11, characterized in that, The side snow skirt assembly includes a plurality of side snow skirts, each of which is arranged sequentially along the length of the vehicle body, and adjacent side snow skirts are spaced apart from each other; each side snow skirt adopts the snow skirt of a rail vehicle as described in any one of claims 1 to 10.

14. The medium-low speed maglev vehicle according to claim 13, characterized in that, It also includes mounting bases and plug-in supports; The mounting base and the plug-in support are respectively mounted on the suspension frame support arm connecting base of the vehicle body; The bottom of the side snow skirt is locked in place with the plug-in support, and the side snow skirt is detachably mounted on the mounting base.

15. The medium-low speed maglev vehicle according to claim 14, characterized in that, The plug-in support is provided with a protruding structure, which is used to engage with the structure at the bottom of the side snow skirt, and the protruding structure is provided with a flexible buffer layer.

Images