Snow accumulation prevention device and railway vehicle

Abstract

The invention discloses an accumulated snow prevention device and a railway vehicle, and relates to the technical field of railway vehicles, the accumulated snow prevention device comprises at least one top diversion trench arranged at the top of a vehicle body, and each top diversion trench extends from the top of the vehicle body to the side surface of a bow basin of a pantograph; all the top diversion trenches are in one-to-one correspondence with all supporting legs of the pantograph, and each top diversion trench is used for guiding airflow to be blown to the supporting legs from the top of the vehicle body so as to clean accumulated snow accumulated in a bow basin; the top flow guide groove comprises a V-shaped flow guide part formed at the top of the vehicle body and a trapezoidal flow guide part formed on the side face of the arch basin, and the wide opening end of the V-shaped flow guide part is oppositely communicated with the wide opening end of the trapezoidal flow guide part; a flow guide slope is formed at the bottom of the top flow guide groove and inclines from the top of the vehicle body to the bottom of the arch basin. The top diversion trench is additionally arranged in the bow pot of the pantograph, the failure rate of the pantograph is reduced by cleaning accumulated snow in the bow pot, and the running safety of a railway vehicle is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a snow accumulation prevention device and a rail vehicle. Background Art

[0002] With the rapid expansion of rail transit networks and increasing operational demand, the operating mileage of rail vehicles is experiencing sustained and rapid growth. The operating environment is also becoming increasingly complex and diverse. Rail vehicles must not only adapt to diverse terrains, including plains, mountains, and hills, but also withstand extreme climatic conditions such as high temperatures, high humidity, and extreme cold. In particularly cold and high temperatures, key components such as pantographs and bogies face severe performance degradation, posing even greater challenges to the reliability and safety of the entire vehicle.

[0003] Under extreme cold and snowy conditions, the exposed pantographs on rail vehicles face severe impacts, leading to snow accumulation in localized areas. Because the pantograph protrudes from the vehicle body, high-speed winds and snow continuously impact its windward surface and the interior of the pantograph basin, whether the pantograph is raised or lowered, causing continuous accumulation of snow. The combined effects of strong wind pressure and low temperatures gradually increase the thickness and density of the snow layer, affecting the proper functioning of components such as insulators, shafts, push rods, and arms. This can lead to power outages and increased wear on the pantograph and catenary, seriously impacting the safe operation of rail vehicles. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a snow prevention device and a rail vehicle, by adding a top guide groove in the bow basin of the pantograph, reducing the failure rate of the pantograph by clearing the snow in the bow basin, improving the operation safety of the rail vehicle, and solving the technical problem of the existing rail vehicle's pantograph causing reduced driving safety due to snow accumulation.

[0005] To achieve the above-mentioned object, the present invention provides a snow accumulation prevention device, comprising at least one top guide groove provided on the top of the vehicle body, each top guide groove extending from the top of the vehicle body to the side of the pantograph basin; all top guide grooves are opposite to all support legs of the pantograph, and each top guide groove is used to guide airflow from the top of the vehicle body to the support legs to clear snow accumulated in the pantograph basin;

[0006] The top guide groove includes a V-shaped guide portion formed on the top of the vehicle body and a trapezoidal guide portion formed on the side of the bow basin. The wide mouth end of the V-shaped guide portion is relatively connected to the wide mouth end of the trapezoidal guide portion; a guide slope is formed at the bottom of the top guide groove, and the guide slope is inclined from the top of the vehicle body to the bottom of the bow basin.

[0007] In some embodiments, the bottom of the top guide trough is slidably provided with an inclined guide plate, which is parallel to the guide slope; and also includes a position adjustment component connected to the inclined guide plate to adjust the position of the inclined guide plate in the top guide trough.

[0008] In some embodiments, the position adjustment assembly includes an adjustment cylinder fixedly connected to the inclined guide plate, a first pipeline connected to the rodless chamber of the adjustment cylinder, a second pipeline connected to the rod chamber of the adjustment cylinder, a reversing valve provided between the first pipeline and the second pipeline, a first adjustment pump provided in the first pipeline, a second adjustment pump provided in the second pipeline, and an oil storage tank respectively connected to the first pipeline and the second pipeline;

[0009] When the reversing valve is in the first position, the first regulating pump draws the hydraulic oil from the oil tank to the first pipeline, and the hydraulic oil enters the rodless cavity of the regulating cylinder along the first pipeline, and the inclined guide plate moves away from the guide slope;

[0010] When the reversing valve is in the second position, the second regulating pump draws the hydraulic oil from the oil tank to the second pipeline, and the hydraulic oil enters the rod chamber of the regulating cylinder along the second pipeline, and the inclined guide plate approaches the guide slope.

[0011] In some embodiments, the vehicle further comprises at least one set of side guide grooves respectively provided on two side decks of the bogie compartment, each side guide groove extending longitudinally to the interior of the bogie compartment, the side guide grooves being used to guide airflow into the bogie compartment to clear snow accumulated in the bogie compartment;

[0012] The side guide grooves are V-shaped guide grooves, and the depth and width of the side guide grooves gradually increase in the direction toward the inside of the bogie cabin.

[0013] In some embodiments, the bogie compartment is an open structure, and the air outlet of the side guide groove is aligned with the bogie or the end plate.

[0014] In some embodiments, the bogie compartment is provided with two sets of side guide grooves, and the V-shaped angles of the two sets of side guide grooves are opposite.

[0015] In some embodiments, in the transverse direction of the bogie compartment, the two sets of side guide grooves are respectively opposite to the two sets of wheelsets;

[0016] In the vertical direction of the bogie compartment, the lower edge of the side guide groove is arranged higher than the center line of the wheelset.

[0017] In some embodiments, the end plate is provided with an in-cabin heater; it also includes a snow detection component for detecting whether snow is accumulated on the end plate, and the snow detection component and the in-cabin heater are both connected to the controller; when the snow detection component detects that snow is accumulated on the end plate, the controller starts the in-cabin heater according to the signal feedback from the snow detection component.

[0018] In some embodiments, the end plate and the side panel are connected by transition through an arc guide surface.

[0019] In some embodiments, it also includes a concave guide groove provided on the vehicle body floor, the concave guide groove is concave from the vehicle body floor toward the interior of the vehicle body, and the concave guide groove is used to guide snow particles carried by the airflow toward the direction of the track.

[0020] The present invention also provides a rail vehicle, comprising a vehicle body and the above-mentioned snow accumulation prevention device, wherein the snow accumulation prevention device is arranged on the vehicle body.

[0021] Compared with the background technology, the snow prevention device provided by the present invention includes at least one top guide groove, each top guide groove extends from the top of the vehicle body to the side of the bow basin of the pantograph, and all the top guide grooves are opposite to all the supporting legs of the pantograph one by one, so that each top guide groove guides the airflow from the top of the vehicle body to the supporting legs, fully clearing the accumulated snow in the bow basin, avoiding the pantograph in the bow basin from malfunctioning due to snow cover, reducing the problems such as power supply interruption of the rail vehicle or abnormal wear of the pantograph network caused by this, ensuring the normal contact between the pantograph and the contact network, reducing the failure rate of the pantograph, and effectively improving the operation safety of the rail vehicle.

[0022] Furthermore, the top guide trough includes a V-shaped guide formed on the top of the vehicle body and a trapezoidal guide formed on the side of the bow basin. The wide ends of the V-shaped guide and the wide ends of the trapezoidal guide are relatively connected, forming a continuous airflow channel. The V-shaped guide adopts a sharp angle design to separate the airflow along the inclined surface, reducing impact pressure and avoiding increased wind resistance caused by airflow turbulence. The trapezoidal guide adopts a gradually expanding cross-section design to smoothly decelerate the airflow and prevent turbulence caused by sudden changes in flow rate. By optimizing the structure of the top guide trough, the aerodynamic efficiency of the entire vehicle is improved, lateral aerodynamic interference during high-speed operation is reduced, and the operational safety of the rail vehicle is improved.

[0023] Furthermore, a guide slope is formed at the bottom of the top guide groove, which slopes from the top of the vehicle body to the bottom of the bow basin, so that the airflow is smoothly blown downward along the guide slope into the bow basin, effectively reducing turbulence and wind resistance in the top area of ​​the vehicle body. By optimizing the airflow path and reducing aerodynamic interference, the operating safety of rail vehicles can also be improved.

[0024] In summary, the present invention adds a top guide groove in the pantograph basin, which can not only reduce the failure rate of the pantograph by clearing the snow in the pantograph basin, but also reduce aerodynamic interference by optimizing the structure of the top guide groove, thereby effectively improving the operation safety of rail vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of a snow accumulation prevention device provided by a specific embodiment of the present invention when a top guide groove is provided in the pantograph basin;

[0027] Figure 2 for Figure 1 A partial enlarged view of

[0028] Figure 3 for Figure 1 Another partial enlarged view;

[0029] Figure 4 for Figure 2 A top view of

[0030] Figure 5 for Figure 4 Side view of;

[0031] Figure 6 for Figure 5 A schematic diagram of a position adjustment component in FIG.

[0032] Figure 7 This is a schematic diagram of a snow accumulation prevention device provided in a specific embodiment of the present invention when a side guide groove is provided in a bogie compartment;

[0033] Figure 8 for Figure 7 Another schematic diagram of;

[0034] Figure 9 for Figure 7 Bottom view of

[0035] Figure 10 for Figure 7 Schematic diagram of the interior of the middle bogie compartment;

[0036] Figure 11 A schematic diagram of the concave guide groove provided for the vehicle body floor;

[0037] Figure 12 for Figure 11 A partial enlarged view of

[0038] Figure 13 Schematic diagram of the bogie compartment.

[0039] The reference numerals are as follows:

[0040] Car body top 1, top guide trough 2, pantograph 3, inclined guide plate 4, position adjustment assembly 5, bogie compartment 6, side guide trough 7, wheelset 8, car body floor 9 and concave guide trough 10;

[0041] V-shaped guide portion 21, trapezoidal guide portion 22 and guide slope 23;

[0042] Bow basin 31 and support legs 32;

[0043] Adjusting cylinder 51, first pipeline 52, second pipeline 53 and oil storage tank 54;

[0044] Side deck 61 and arc guide surface 62. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] The embodiment of the present invention discloses a snow accumulation prevention device, as shown in the attached Figures 1 to 5 As shown, it includes at least one top guide groove 2 provided on the top 1 of the car body, each top guide groove 2 extends from the top 1 of the car body to the side of the bow basin 31 of the pantograph 3, and all the top guide grooves 2 are opposite to all the supporting legs 32 of the pantograph 3, so that each top guide groove 2 guides the airflow from the top 1 of the car body to the supporting legs 32, fully clearing the accumulated snow in the bow basin 31, avoiding the pantograph 3 in the bow basin 31 from malfunctioning due to being covered by snow, reducing the problems such as power supply interruption of the rail vehicle or abnormal wear of the pantograph network caused by this, ensuring the normal contact between the pantograph 3 and the contact network, reducing the failure rate of the pantograph 3, and effectively improving the operation safety of the rail vehicle.

[0048] As a preferred embodiment, the pantograph 3 in the present invention has a three-leg structure, that is, the pantograph 3 has three supporting legs 32, and the three supporting legs 32 are distributed in a triangular shape; specifically, one end of the bow basin 31 is provided with a supporting leg 32, and the other end thereof is provided with two supporting legs 32; accordingly, the bow basin 31 of the pantograph 3 is provided with three top guide grooves 2, and the air outlet of each top guide groove 2 is aligned with one supporting leg 32. Of course, the number and setting position of the top guide grooves 2 can be adjusted according to the number of supporting legs 32 of the pantograph 3, and it is only necessary to ensure that the top guide grooves 2 are aligned with the supporting legs 32. In addition, it is also necessary to ensure that the top guide grooves 2 extend longitudinally along the vehicle body to reduce the resistance of the airflow flowing into the top guide grooves 2.

[0049] It should be noted that if Figure 3 and 4 As shown, the air outlets of the top guide grooves 2 located at both ends of the bow basin 31 are opposite to each other. When the rail vehicle changes its running direction, the air inlet of at least one top guide groove 2 faces the windward side of the rail vehicle. Regardless of whether the rail vehicle changes its running direction, at least one top guide groove 2 can guide the high-speed airflow on the top 1 of the vehicle body to impact the snow around the supporting legs 32 of the pantograph 3, reduce the amount of snow accumulation in the bow basin 31, and fully clear the snow accumulated in the bow basin 31.

[0050] Furthermore, as attached Figure 4 As shown, the top guide groove 2 includes a V-shaped guide portion 21 formed on the top of the vehicle body 1 and a trapezoidal guide portion 22 formed on the side of the bow basin 31. The wide end of the V-shaped guide portion 21 is relatively connected to the wide end of the trapezoidal guide portion 22 to form a continuous airflow channel; wherein, the V-shaped guide portion 21 adopts a sharp angle design to separate the airflow along the inclined surface, reduce the impact pressure, and avoid the increase in wind resistance caused by airflow turbulence; the trapezoidal guide portion 22 adopts a gradually expanding cross-section design to smoothly decelerate the airflow and prevent turbulence caused by sudden changes in flow rate. By optimizing the structure of the top guide groove 2, the aerodynamic efficiency of the entire vehicle is improved, the lateral aerodynamic interference during high-speed operation is reduced, and the operating safety of the rail vehicle is improved. wherein, the air outlet width of the trapezoidal guide portion 22 ranges from 60mm to 100mm.

[0051] Furthermore, as attached Figure 4 As shown, a guide slope 23 is formed at the bottom of the top guide groove 2, and the guide slope 23 is inclined from the top 1 of the vehicle body to the bottom of the bow basin 31, so that the airflow is smoothly blown downward along the guide slope 23 into the bow basin 31, effectively reducing the turbulence and wind resistance in the top 1 area of ​​the vehicle body, and by optimizing the airflow path and reducing aerodynamic interference, it can also achieve the improvement of the operation safety of the rail vehicle.

[0052] In summary, the present invention adds a top guide groove 2 in the bow basin 31 of the pantograph 3, which can not only reduce the failure rate of the pantograph 3 by clearing the snow in the bow basin 31, but also reduce aerodynamic interference by optimizing the structure of the top guide groove 2, thereby effectively improving the operation safety of the rail vehicle.

[0053] As a preferred embodiment, as shown in the attached Figure 5 As shown, the bottom of the top guide trough 2 is slidably provided with an inclined guide plate 4, which is parallel to the guide slope 23. When the inclined guide slides to any position, the inclined guide plate 4 always remains parallel to the guide slope 23. The anti-snow device also includes a position adjustment component 5, which is connected to the inclined guide plate 4 and is used to adjust the position of the inclined guide plate 4 in the top guide trough 2. By adjusting the height of the inclined guide plate 4 in the top guide trough 2, the air outlet height in the top guide trough 2 is dynamically adjusted, so that the airflow acts accurately on different height areas of the pantograph 3 support leg 32; for example, when the thickness of the snow increases, the height of the inclined guide plate 4 is raised to ensure that the airflow always acts on the upper surface of the snow, so that the airflow outlet height changes with the change of the snow thickness in the bow basin 31, and the snow clearing effect is improved.

[0054] As a preferred embodiment, as shown in the attached Figure 6 As shown, the position adjustment component 5 is a hydraulic adjustment mechanism, including an adjustment cylinder 51 fixedly connected to the inclined guide plate 4, a first pipeline 52 connected to the rodless cavity of the adjustment cylinder 51, a second pipeline 53 connected to the rod cavity of the adjustment cylinder 51, a reversing valve arranged between the first pipeline 52 and the second pipeline 53, a first adjusting pump arranged in the first pipeline 52, a second adjusting pump arranged in the second pipeline 53 and an oil storage tank 54 connected to the first pipeline 52 and the second pipeline 53 respectively; wherein, the first adjusting pump and the second adjusting pump are both equipped with a drive motor for driving the two pumps to rotate.

[0055] When the reversing valve is in the first position, the first regulating pump draws the hydraulic oil from the oil tank 54 to the first pipeline 52, and the hydraulic oil enters the rodless chamber of the regulating cylinder 51 along the first pipeline 52, the rodless chamber takes in oil, and the rod chamber discharges oil, the piston rod extends outward, the inclined guide plate 4 moves away from the guide slope 23, the air outlet height rises, and the air flow in the top guide groove 2 blows along the inclined guide plate 4 to the high point of the support leg 32 in the bow basin 31.

[0056] When the reversing valve is in the second position, the second regulating pump draws the hydraulic oil from the oil tank 54 to the second pipeline 53, and the hydraulic oil enters the rod chamber of the regulating cylinder 51 along the second pipeline 53. The rod chamber takes in oil and the rodless chamber discharges oil. The piston rod retracts inward, the inclined guide plate 4 approaches the guide slope 23, the air outlet height drops, and the air flow in the top guide groove 2 blows along the inclined guide plate 4 to the lower part of the support leg 32 in the bow basin 31.

[0057] As a preferred embodiment, Figures 8 to 10 As shown, the snow accumulation prevention device further includes at least one set of side guide grooves 7 provided on two side panels 61 of the bogie compartment 6. That is, each set of side guide grooves 7 includes two side guide grooves, and each of the two side panels 61 is provided with a side guide groove 7. Considering the symmetrical structure of the bogies in the bogie compartment 6, the side guide grooves 7 provided on the two side panels 61 are symmetrical.

[0058] Each side guide groove 7 extends longitudinally to the interior of the bogie compartment 6. During high-speed travel of the rail vehicle, the side guide groove 7 guides the airflow from the outside of the bogie compartment 6 to the inside, so that the airflow blows into the bogie compartment 6. On the one hand, it guides the high-speed airflow to blow off the snow on the bogie. On the other hand, it increases the internal pressure of the bogie compartment 6, so that a positive pressure is formed inside the bogie compartment 6, reducing the entry of environmental wind and snow into the bogie, and clearing the accumulated snow in the bogie compartment 6, avoiding problems such as heating of the traction motor of the bogie due to snow accumulation, and further avoiding failure of the traction motor, axle box, gear box or air spring due to melting and freezing of snow, thereby reducing the failure rate and effectively improving the operation safety of the rail vehicle.

[0059] The side guide grooves 7 are V-shaped, gradually increasing in depth and width toward the interior of the bogie compartment 6. The side guide grooves 7 feature a sharp angle, separating the airflow along the slope, reducing impact pressure and preventing increased wind resistance caused by airflow turbulence. The optimized structure of the side guide grooves 7 reduces aerodynamic interference and effectively improves rail vehicle operational safety. The bottom of the side guide grooves 7 also has a guide slope 23, extending obliquely from the outer surface of the side deck 61 to the inner surface of the side deck 61.

[0060] It is particularly important to note that both the top guide groove 2 and the side guide groove 7 are embedded in the vehicle body, i.e., recessed in the vehicle body surface. By utilizing the entrainment effect of the side edges of the air inlet, the side edges can simultaneously entrain the main flow and the low-energy boundary layer, allowing more air to flow into the two guide grooves. Furthermore, the smaller ends of the top guide groove 2 and the side guide groove 7 serve as air inlets, with the flow cross-section gradually increasing. The larger ends serve as air outlets. Air is collected during high-speed operation of the rail vehicle, and sufficient external air is diverted from the air inlet to the air outlet with minimal flow losses, eliminating the need for separate energy-consuming devices and thus reducing energy consumption. As a preferred embodiment, the ratio of the outlet width to the outlet depth of the top guide groove 2 and the side guide groove 7 is in the range of 2-6, and the inclination angle α of the guide slopes 23 of the two is in the range of 5°-12°. The longitudinal length between the air inlet and the air outlet of the top guide groove 2 and the side guide groove 7 satisfies: L=1.5W / tanα, where L is the longitudinal length of the two guide grooves, W is the air outlet width of the two guide grooves, and α is the inclination angle of the guide slope 23.

[0061] As a preferred embodiment, the bogie compartment 6 is an open structure, and the air outlet of the side guide groove 7 is aimed at the bogie or the end plate, blowing off the snow accumulated on the bogie or the end plate, thereby cleaning the snow in the bogie compartment 6.

[0062] As a preferred embodiment, the bogie cabin 6 has a closed structure, and the air outlet of the side guide groove 7 blows air into the bogie cabin 6 to increase the pressure inside the bogie cabin 6, so that the bogie cabin 6 forms a positive pressure, preventing external wind and snow from entering the bogie cabin 6, and reducing the risk of snow accumulation in the bogie cabin 6.

[0063] As a preferred embodiment, the bogie compartment 6 is provided with two groups of side guide grooves 7, and the V-shaped angles of the two groups of side guide grooves 7 are opposite, that is, the air inlets of the two groups of side guide grooves 7 are arranged relatively to each other. Regardless of whether the rail vehicle is running up or down, there is always a group of side guide grooves 7 that is in effect to meet different operating requirements.

[0064] As a preferred embodiment, in the lateral direction of the bogie compartment 6, two sets of side guide grooves 7 are respectively opposite the two sets of wheelsets 8. The symmetrical distribution of the guide grooves can balance the airflow pressure on both sides of the wheelsets 8, reduce the impact of lateral aerodynamic loads on the bogie, and improve the stability of the rail vehicle during high-speed driving. Considering that the end plate of the bogie is located in the transition area between the car body and the bogie, where vortices are easily generated due to the sudden change in the car body shape, to prevent snow particles in the vortex area from accumulating on the surface of the end plate due to the reduced movement speed, the lower edge of the side guide grooves 7 in the vertical direction of the bogie compartment 6 is set higher than the centerline of the wheelset 8, ensuring that the airflow blows towards the end plate, achieving efficient snow removal from the bogie.

[0065] As a preferred embodiment, the end panels are equipped with an in-cabin heater. A snow detection element is also included for detecting whether snow has accumulated on the end panels. Both the snow detection element and the in-cabin heater are connected to a controller. When the snow detection element detects snow accumulation on the end panels, the controller activates the in-cabin heater based on a signal fed back by the snow detection element. The in-cabin heater is automatically activated based on the amount of snow accumulated on the end panels. By heating the end panels, the adhesion of snow is reduced, making it easier for the airflow from the side guide grooves 7 to blow away the snow. Specifically, the snow detection element can be a pressure sensor, a contact sensor, or a camera.

[0066] As a preferred embodiment, as shown in the attached Figure 13 As shown, the end plate and the side cabin plate 61 are connected through a transition arc guide surface 62. Compared with the original angle design, the arc guide surface 62 can more easily guide the airflow to flow fully in the bogie cabin 6, reduce the adhesion of snow, and make it easier for the airflow blown out of the side guide groove 7 to blow off the snow.

[0067] As a preferred embodiment, as shown in the attached Figure 11 and 12As shown, the snow accumulation prevention device also includes a concave guide groove 10 provided on the vehicle body floor 9. The concave guide groove 10 is recessed from the vehicle body floor 9 into the vehicle body interior and is located between the snow remover and the bogie compartment 6. The concave guide groove 10 is used to guide snow particles carried by the airflow toward the track, so that the snow particles impact the track, reducing the risk of snow particles entering the bogie. By reducing the amount of snow particles entering, snow accumulation in the bogie compartment 6 is reduced, thereby improving the snow accumulation prevention effect. Preferably, the concave guide groove 10 is a circular arc groove, with the curvature on the air inlet side being smaller than the curvature on the air outlet side.

[0068] The present invention also provides a rail vehicle, comprising a vehicle body and the above-mentioned snow accumulation prevention device, wherein the snow accumulation prevention device is arranged on the pantograph 3 bow basin 31 of the vehicle body, the bogie cabin 6 wall or the vehicle body floor 9.

[0069] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0070] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A snow prevention device, characterized in that: The invention comprises at least one top guide groove (2) provided on the top of the vehicle body (1), each of the top guide grooves (2) extending from the top of the vehicle body (1) to the side of the bow basin (31) of the pantograph (3); all the top guide grooves (2) are opposite to all the support legs (32) of the pantograph (3), and each of the top guide grooves (2) is used to guide airflow from the top of the vehicle body (1) to the support legs (32) to clear snow accumulated in the bow basin (31); The top guide groove (2) comprises a V-shaped guide portion (21) formed on the top of the vehicle body (1) and a trapezoidal guide portion (22) formed on the side of the bow basin (31), wherein the wide end of the V-shaped guide portion (21) is relatively connected to the wide end of the trapezoidal guide portion (22); a guide slope (232) is formed at the bottom of the top guide groove (2), and the guide slope (232) is inclined from the top of the vehicle body (1) to the bottom of the bow basin (31).

2. The snow prevention device according to claim 1, characterized in that: The bottom of the top guide trough (2) is slidably provided with an inclined guide plate (4), wherein the inclined guide plate (4) is parallel to the guide slope (232); and further comprising a position adjustment component (5) connected to the inclined guide plate (4) for adjusting the position of the inclined guide plate (4) in the top guide trough (2).

3. The snow prevention device according to claim 2, characterized in that: The position adjustment assembly (5) comprises an adjustment cylinder (51) fixedly connected to the inclined guide plate (4), a first pipeline (52) connected to the rodless cavity of the adjustment cylinder (51), a second pipeline (53) connected to the rod cavity of the adjustment cylinder (51), a reversing valve provided between the first pipeline (52) and the second pipeline (53), a first adjustment pump provided in the first pipeline (52), a second adjustment pump provided in the second pipeline (53), and an oil storage tank (54) respectively connected to the first pipeline (52) and the second pipeline (53); When the reversing valve is in the first position, the first regulating pump draws hydraulic oil from the oil storage tank (54) to the first pipeline (52), and the hydraulic oil enters the rodless chamber of the regulating cylinder (51) along the first pipeline (52), and the inclined guide plate (4) moves away from the guide slope (232); When the reversing valve is in the second position, the second regulating pump draws hydraulic oil from the oil storage tank (54) to the second pipeline (53), and the hydraulic oil enters the rod chamber of the regulating cylinder (51) along the second pipeline (53), and the inclined guide plate (4) is close to the guide slope (232).

4. The snow prevention device according to any one of claims 1 to 3, characterized in that: It also includes at least one set of side guide grooves (7) respectively provided on two side decks (61) of the bogie compartment (6), wherein each of the side guide grooves (7) extends longitudinally to the interior of the bogie compartment (6), and the side guide grooves (7) are used to guide airflow into the bogie compartment (6) to clear snow accumulated in the bogie compartment (6); The side guide groove (7) is a V-shaped guide groove, and the depth and width of the side guide groove (7) gradually increase in the direction toward the inside of the bogie compartment (6).

5. The snow prevention device according to claim 4, characterized in that: The bogie compartment (6) is an open structure, and the air outlet of the side guide groove (7) is aligned with the bogie or the end plate.

6. The snow prevention device according to claim 5, characterized in that: The bogie compartment (6) is provided with two groups of side guide grooves (7), and the V-shaped angles of the two groups of side guide grooves (7) are opposite.

7. The snow prevention device according to claim 6, characterized in that: In the transverse direction of the bogie compartment (6), the two groups of side guide grooves (7) are respectively opposite to the two groups of wheel sets (8); In the vertical direction of the bogie compartment (6), the lower edge of the side guide groove (7) is arranged higher than the center line of the wheelset (8).

8. The snow prevention device according to claim 6, characterized in that: The end plate is provided with an in-cabin heater; it also includes a snow detection component for detecting whether snow is accumulated on the end plate, and the snow detection component and the in-cabin heater are both connected to a controller; when the snow detection component detects that snow is accumulated on the end plate, the controller starts the in-cabin heater according to the signal fed back by the snow detection component.

9. The snow prevention device according to claim 5, characterized in that: The end plate and the side compartment plate (61) are transitionally connected via a circular arc guide surface (62).

10. The snow prevention device according to any one of claims 1 to 3, characterized in that: The vehicle further comprises a concave guide groove (10) provided on the vehicle body floor (9), wherein the concave guide groove (10) is concave from the vehicle body floor (9) toward the interior of the vehicle body, and the concave guide groove (10) is used to guide snow particles carried by the airflow toward the direction of the track.

11. A rail vehicle, characterized in that: The vehicle comprises a vehicle body and the snow-accumulation prevention device according to any one of claims 1 to 9, wherein the snow-accumulation prevention device is arranged on the vehicle body.

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