A snow accumulation prevention device under a rail vehicle and a rail vehicle

Abstract

The utility model discloses a snow-proof device under a rail vehicle and a rail vehicle, and relates to the field of vehicle engineering technology. The snow-proof device under a rail vehicle comprises a bogie, a covering structure covering the bottom of the bogie, and equipment compartments respectively arranged at the front and rear ends of the bogie, the covering structure comprising a bottom plate arranged under the bogie, openings respectively arranged on the bottom plate below each wheel area of ​​the bogie to avoid the corresponding wheels; a snow-proof cavity opening downward is arranged on the bottom surface of each equipment compartment, and a plurality of snow-proof guide plates are provided under the bottom surface of the equipment compartment and / or below the bottom plate, and at least one snow-proof guide plate is located in front of all openings, and at least one snow-proof guide plate is located behind all openings. The snow-proof device can realize multi-stage combined snow-proofing, and resistance is provided by the snow-proof cavity and the snow-proof guide plate in turn, which can significantly reduce the degree of snow accumulation in the covering structure of the bogie area at the bottom of the vehicle, and realize snow-proofing more conveniently and reliably.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to a device for preventing snow accumulation under a rail vehicle and a rail vehicle. Background Art

[0002] High-speed EMUs in winter snowy environments will cause strong air disturbances around the line, and snow is easily accumulated in the bogie covering structure area, affecting the dynamic performance of the vehicle and seriously affecting the safe operation of the train. To address this snow and icing problem, one of the main solutions currently is to spray antifreeze mixture on the bogie surface to reduce the icing problem during train operation, but the antifreeze needs to be reapplied regularly, and there are problems such as dosage and time.

[0003] Therefore, how to achieve snow protection more conveniently and reliably is a technical problem that technicians in this field currently need to solve. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a rail vehicle and a snow-prevention device under the rail vehicle, which can more conveniently and reliably prevent snow.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for preventing snow accumulation under a rail vehicle comprises a bogie, a covering structure covering the bottom of the bogie, and equipment compartments respectively arranged at the front and rear ends of the bogie, wherein the covering structure comprises a bottom plate arranged below the bogie, and openings are respectively opened on the bottom plate below each wheel area of ​​the bogie to avoid the corresponding wheels; a downwardly opening snow-proof cavity is respectively arranged on the bottom surface of each equipment compartment, and a plurality of snow-proof deflectors are provided on the bottom surface of the equipment compartment and / or below the bottom plate, and at least one of the snow-proof deflectors is located in front of all the openings, and at least one of the snow-proof deflectors is located behind all the openings.

[0007] Preferably, the space of the snow protection cavity in the front-to-back direction gradually expands from top to bottom.

[0008] Preferably, at least part of the cavity wall of the snow protection cavity is inclined relative to the front-rear direction.

[0009] Preferably, the snow protection cavity comprises two cavity walls which are arranged in sequence along the front-rear direction and are inclined relative to the front-rear direction, and the two cavity walls are butted together to form a V-shaped groove which opens downward.

[0010] Preferably, the anti-snow deflector is perpendicular to the base plate, and the top end is fixedly connected to the base plate.

[0011] Preferably, there are two snow deflectors, which are respectively fixed to the front and rear end portions of the base plate.

[0012] Preferably, a snow blocking plate is fixedly arranged around the circumference of the opening.

[0013] Preferably, the snow blocking plate protrudes upward from the bottom plate.

[0014] Preferably, the snow deflector and / or the snow blocking plate are detachably connected to the base plate.

[0015] A rail vehicle, comprising the rail vehicle under-vehicle snow accumulation prevention device as described in any one of claims 1 to 4.

[0016] The utility model provides a snow accumulation prevention device under a rail vehicle, comprising a bogie, a covering structure covering the bottom of the bogie, and equipment compartments respectively arranged at the front end and the rear end of the bogie, wherein the covering structure comprises a bottom plate arranged below the bogie, and openings are respectively provided on the bottom plate below each wheel area of ​​the bogie to avoid the corresponding wheels; a snow prevention cavity opening downward is respectively provided on the bottom surface of each equipment compartment, and a plurality of snow prevention deflectors are provided on the bottom surface of the equipment compartment and / or below the bottom plate, and at least one snow prevention deflector is located in front of all the openings, and at least one snow prevention deflector is located behind all the openings.

[0017] The snow-proof device can realize multi-stage combined snow-proof. When the snow rolled up by the train flies into the bogie covering structure area during train operation, the snow-proof cavity and the snow-proof guide plate provide resistance in turn, which can significantly reduce the snow accumulation in the covering structure of the bogie area at the bottom of the vehicle, and realize snow-proof more conveniently and reliably. At the same time, since the snow-proof cavity and the snow-proof guide plate are respectively arranged on both sides of the bottom opening of the vehicle, the train can achieve snow-proof effect in both forward and reverse operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 It is an isometric view of a specific embodiment 1 of the under-rail vehicle snow accumulation prevention device provided by the utility model;

[0020] Figure 2 A cross-sectional view of a specific embodiment 1 of the device for preventing snow accumulation under a railway vehicle provided by the utility model;

[0021] Figure 3The utility model discloses a snow particle motion trajectory of a specific embodiment of the device for preventing snow accumulation under a rail vehicle provided by the utility model.

[0022] Reference numerals:

[0023] Equipment cabin 1, snowproof cavity 11, cavity wall 12;

[0024] Bottom plate 2, opening 21;

[0025] Snow deflector 3;

[0026] Snowboard 4;

[0027] Wheel 5;

[0028] Bogie 6. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The core of the utility model is to provide a rail vehicle and a snow accumulation prevention device under the rail vehicle, which can realize snow prevention more conveniently and reliably.

[0031] In the specific embodiment 1 of the snow accumulation prevention device under the railway vehicle provided by the utility model, please refer to Figures 1 to 3 , including a bogie 6, a covering structure covering the bottom of the bogie 6, and equipment cabins 1 respectively arranged at the front and rear ends of the bogie 6. The covering structure includes a bottom plate 2 arranged below the bogie 6. Openings 21 are respectively opened on the bottom plate 2 below each wheel area of ​​the bogie 6 to avoid the corresponding wheels 5.

[0032] It should be noted that the front corresponds to the moving direction of the vehicle, the vehicle moves forward, and the opposite direction is the rear.

[0033] The bottom surface of each equipment cabin 1 is provided with a snowproof cavity. The snowproof cavity 11 can provide space, such as Figure 3 As shown, the snow-proof cavity 11 can store a portion of snow, thereby reducing the amount of snow entering the bogie sheathing structure area, and the cavity wall 12 of the snow-proof cavity 11 has a flow-guiding effect, which can appropriately change the trajectory of snow particles.

[0034] The bottom surface of the equipment cabin 1 and / or the bottom of the bottom plate 2 are provided with a plurality of snow deflectors 3. In this embodiment, all the snow deflectors 3 are arranged below the bottom plate 2. In other embodiments, all the snow deflectors 3 may be arranged on the bottom surface of the equipment cabin 1, and snow deflectors 3 may be arranged below the bottom plate 2 and the bottom surface of the equipment cabin 1. Among them, at least one snow deflector 3 is located in front of all the openings 21, and at least one snow deflector 3 is located behind all the openings 21. The snow deflectors 3 can block snow particles and change their flow direction, for example, changing the flow from the front-to-back direction to the downward flow.

[0035] The snow-prevention device in this embodiment can realize multi-stage combined snow-prevention. When the snow rolled up during train operation flies into the bogie covering structure area, the snow-prevention cavity 11 and the snow-prevention deflector 3 provide resistance in turn, which can significantly reduce the snow accumulation in the covering structure of the bogie 6 area at the bottom of the vehicle, and realize snow prevention more conveniently and reliably. At the same time, since the snow-prevention cavity 11 and the snow-prevention deflector 3 are respectively arranged on both sides of the bottom opening of the vehicle, the train can achieve snow prevention in both forward and reverse directions.

[0036] Regarding the snow protection cavity 11, it can be used as a primary snow protection part, such as Figure 3 As shown, the snow-proof cavity 11 can store a portion of snow, thereby reducing the amount of snow entering the bogie sheathing structure area, and the cavity wall 12 of the snow-proof cavity 11 has a flow-guiding effect, which can appropriately change the trajectory of snow particles.

[0037] Among them, for the structure of the snow-proof cavity 11, as Figure 2 and Figure 3 As shown, the space of the snow-proof cavity 11 in the front-to-back direction gradually expands from top to bottom, which is convenient for clearing the accumulated snow and can reduce the risk of snow particles being accumulated in the snow-proof cavity 11 and unable to fall to the ground due to obstruction by the cavity wall of the snow-proof cavity 11.

[0038] Specifically, at least part of the cavity wall of the snow protection cavity 11 is inclined relative to the front-rear direction to gradually change the flow direction of the snow flowing in the front-rear direction, mainly to gradually guide the snow to the ground below.

[0039] Specifically, the snowproof cavity 11 includes two cavity walls 12 arranged in sequence along the front-to-back direction and inclined relative to the front-to-back direction. The two cavity walls 12 are connected to form a V-shaped groove with a downward opening 21. When the train travels in two directions, the snowproof cavity 11 can guide the airflow and snow particles with the help of different cavity walls. At the same time, the V-shaped groove is used as the snowproof cavity 11, because it is a conical space with a large bottom space and a small top space, it is convenient to clean the accumulated snow. In addition, the above-mentioned cavity wall 12 limits the inclination direction, but the shape can be freely selected, and can be a plane, a curved surface, an angled surface, etc.

[0040] Alternatively, in other embodiments, the snow-proof cavity 11 may also be a trapezoidal or arc-shaped groove.

[0041] Among them, as for the number of snow-proof cavities 11, a pair is set in this embodiment, that is, one is set on the bottom surface of each of the two equipment compartments 1 in front and behind the bogie 6. In other embodiments, it can also be set to 2 or 3 pairs.

[0042] Of course, in other embodiments, the snow protection cavity may also be a baffle structure to block snow.

[0043] As for the snow-proof deflector 3, it can be used as a secondary snow-proof part to block and guide the snow flowing toward the covering structure.

[0044] Among them, for the structure of the snow deflector 3, as Figure 2 and Figure 3 As shown, the snow-proof deflector 3 is perpendicular to the base plate 2, and the top end is fixedly connected to the base plate 2 (for example, bolted). With this arrangement, the base plate 2 and the snow-proof deflector 3 can form a right-angle shape, which can effectively change the direction of the airflow carrying snow particles. The snow-proof deflector 3 can change the trajectory of the snow particles to be roughly perpendicular to the ground, thereby reducing the amount of snow entering the interior of the covering structure. At the same time, the snow-proof deflector 3 can act as a barrier and can effectively block the snow rolled up during driving, thereby ensuring the diversion and snow-proof effects.

[0045] Specifically, the shape of the snow deflector 3 can be set to be an arc shape, a triangle shape, or a wedge shape.

[0046] Among them, the number of the anti-snow deflector 3 can be specifically set to two, which are respectively fixed to the front and rear ends of the bottom plate 2. At this time, the anti-snow deflector 3 is located close to the front and rear ends of the bottom plate 2, which can ensure comprehensive protection of the bottom plate 2 area.

[0047] In order to further enhance the snow prevention effect, the rail vehicle undercarriage snow prevention device further includes a snow blocking plate 4 as a third-level snow prevention part. Figures 1 to 3 As shown, a snow blocking plate 4 is fixedly arranged around the opening 21. The snow blocking plate 4 is a vertical structure, specifically a ring-shaped plate, which fully surrounds the wheel 4. For snow particles that still enter the opening 21 area of ​​the coating structure after passing through the primary snow blocking portion and the secondary snow blocking portion, the vertical snow blocking plate 4 can prevent the snow from entering the interior of the coating structure, thereby improving the snow prevention effect. Specifically, the snow blocking plate 4 protrudes upward from the bottom plate 2 to effectively provide resistance for snow particles entering the opening 21. The snow blocking plate 4 can also be fixed at the bottom of the opening and extend upward from the bottom plate. At this time, the snow blocking plate 4 is an internal snow blocking component of the coating structure, which effectively physically prevents or isolates snow particles from entering the interior of the coating structure.

[0048] The snow blocking plate 4 can be a straight plate parallel to the center line of the opening or an inclined plate inclined relative to the center line. In addition, the material of the snow blocking plate 4 can be set to rubber or brush.

[0049] In addition, in this embodiment, the snow-proof cavity 11, the snow-proof deflector 3, and the snow-blocking plate 4 are fixed or integrally formed on the equipment cabin 1 or the bottom plate 2. In other embodiments, the corresponding positions can be adjustably connected through the control structure, for example, the snow-proof deflector 3 is connected to the equipment cabin 1 or the bottom plate 2 at an adjustable angle. In addition, in other embodiments, the snow-proof deflector 3 and / or the snow-blocking plate 4 can also be detachably connected to the bottom plate 2. In addition, the snow-proof cavity 11, the snow-proof deflector 3, and the snow-blocking plate 4 can be respectively arranged symmetrically front and back.

[0050] The working principle of the undercarriage snow prevention device for rail vehicles in this embodiment is as follows: Figure 3 , including: the arrow in the figure indicates a movement trajectory of snow particles. When the snow particles pass through area A (mainly the bottom of the equipment cabin 1), the airflow changes direction and enters the snow-proof cavity 11, and some snow particles accumulate here (i.e., in the snow-proof cavity 11), reducing the amount of snow flowing backward; when the snow particles pass through area B (mainly the junction area between the bottom plate 2 and the bottom of the equipment cabin 1), they are affected by the snow-proof deflector 3. Since the snow-proof deflector 3 is a right-angle shape, the movement trajectory of the snow particles is changed to vertically turn to the ground, reducing the probability of entering the bogie 6 area; when the remaining snow particles pass through area C (mainly the area near the opening 21 and the wheel 5), under the convolution effect of the wheel 5, some snow particles enter the area of ​​the opening 21. Due to the action of the snow-blocking plate 4, the amount of snow entering the interior of the covering structure is further reduced.

[0051] Among them, during processing or assembly, the dimensions of the snow-proof cavity 11, the snow-proof deflector 3, and the snow-blocking plate 4 are all verified through limit calculations, spatial interference analysis, and other dimensional checks. Under the premise of meeting the space requirements, the dimensions with the best snow-proof effect are selected; the spacing dimensions and angles between the snow-proof cavity 11, the snow-proof deflector 3, and the snow-blocking plate 4 are compared and analyzed to determine the dimensions with the best snow-proof effect; the multi-stage combined anti-snow accumulation device has been subjected to aerodynamic calculations and snow accumulation wind tunnel tests, which can reduce snow accumulation by more than 20%.

[0052] Due to the use of multi-level combined snow prevention technology and the optimization of parameters between different levels, three snow prevention technologies with different principles, different shapes, different positions and different sizes are used, and the optimal combination scheme is selected to achieve snow prevention, overcome the problem of snow accumulation in the bogie area covering structure, avoid the high cost and poor effect of spraying antifreeze and electric heating to melt snow, and solve the problem of poor effect of ordinary snow prevention guide plate measures under heavy snowfall conditions, thereby achieving the effect of significantly reducing snow accumulation in the bogie 6 area covering structure. In addition, the first-level snow prevention cavity 11, the second-level snow prevention guide plate 3, and the third-level snow blocker 4 can improve the structural stiffness of the area and reduce the influence of vibration. After simulation analysis, the effect of reducing aerodynamic resistance can be achieved at the same time, and the drag reduction ratio is 1%~2%. In addition, the snow prevention cavity 11, the snow prevention guide plate 3, and the snow blocker 4 are all on the outside of the vehicle or in an easily disassembled area, which is convenient for maintenance. They are fixedly installed respectively, and no mechanism motion control is adopted. There are few fault points, the system is simple, reliable and uncomplicated, and it is not easy to fail, and the maintainability is good.

[0053] In addition to the above-mentioned rail vehicle undercarriage snow prevention device, the utility model also provides a rail vehicle, which includes a rail vehicle undercarriage snow prevention device, and the rail vehicle undercarriage snow prevention device can specifically be a rail vehicle undercarriage snow prevention device provided in any of the above embodiments, and the beneficial effects can be referred to the above embodiments accordingly. The structures of other parts of the rail vehicle can refer to the prior art, and will not be repeated herein.

[0054] It should be noted that when an element is referred to as "fixed" to another element, it may be directly on the other element or there may be an element in the middle. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an element in the middle at the same time. In addition, in the description of the present utility model, unless otherwise specified, "multiple", "multiple roots", and "multiple groups" mean two or more.

[0055] The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0057] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0058] The above is a detailed introduction to the rail vehicle undercarriage snow prevention device and rail vehicle provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A snow-prevention device under a railway vehicle, characterized in that: The invention comprises a bogie (6), a covering structure covering the bottom of the bogie (6), and equipment cabins (1) respectively arranged at the front end and the rear end of the bogie (6), wherein the covering structure comprises a bottom plate (2) arranged below the bogie (6), and openings (21) are respectively provided on the bottom plate (2) below each wheel area of ​​the bogie (6) to avoid the corresponding wheels (5); a snowproof cavity (11) with a downward opening (21) is respectively provided on the bottom surface of each equipment cabin (1), and a plurality of snowproof deflectors (3) are provided on the bottom surface of the equipment cabin (1) and / or below the bottom plate (2), and at least one of the snowproof deflectors (3) is located in front of all the openings (21), and at least one of the snowproof deflectors (3) is located behind all the openings (21).

2. The device for preventing snow accumulation under a railway vehicle according to claim 1, characterized in that: The space of the snow-proof cavity (11) in the front-rear direction gradually expands from top to bottom.

3. The device for preventing snow accumulation under a railway vehicle according to claim 1, characterized in that: At least part of the cavity wall of the snow protection cavity (11) is inclined relative to the front-rear direction.

4. The device for preventing snow accumulation under a railway vehicle according to claim 3, characterized in that: The snow-proof cavity (11) comprises two cavity walls (12) arranged in sequence along the front-rear direction and arranged obliquely relative to the front-rear direction, and the two cavity walls (12) are butted together to form a V-shaped groove opening downward (21).

5. The device for preventing snow accumulation under a railway vehicle according to claim 1, characterized in that: The anti-snow deflector (3) is perpendicular to the bottom plate (2), and the top end is fixedly connected to the bottom plate (2).

6. The device for preventing snow accumulation under a railway vehicle according to claim 1, characterized in that: There are two snow-proof deflectors (3), which are respectively fixed to the front and rear end portions of the bottom plate (2).

7. The device for preventing snow accumulation under a railway vehicle according to any one of claims 1 to 6, characterized in that: A snow blocking plate (4) is fixedly arranged around the circumference of the opening (21).

8. The device for preventing snow accumulation under a railway vehicle according to claim 7, characterized in that: The snow blocking plate (4) protrudes upward from the bottom plate (2).

9. The device for preventing snow accumulation under a railway vehicle according to claim 7, characterized in that: The anti-snow deflector (3) and / or the snow blocking plate (4) are detachably connected to the base plate (2).

10. A rail vehicle, characterized in that: The invention comprises the device for preventing snow accumulation under a rail vehicle as claimed in any one of claims 1 to 9.

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