Air volume distribution device and railway vehicle

Abstract

The application provides a wind volume distribution device and a rail vehicle, the wind volume distribution device comprising a distribution box, the top of the distribution box being connected with an air inlet pipe, the inside of the distribution box being provided with a first partition plate and a second partition plate, the first partition plate and the second partition plate separating the inner cavity of the distribution box into a window air supply cavity, a roof air supply cavity and a side wall air supply cavity, and the sidewall of the distribution box being respectively provided with a window air supply pipe and a side wall air supply pipe. The wind volume distribution device provided by the application separates the distribution box into the window air supply cavity, the roof air supply cavity and the side cavity air supply cavity by the first partition plate and the second partition plate arranged in the distribution box, and the cavity sizes of the window air supply cavity, the roof air supply cavity and the side cavity air supply cavity are made to meet the actual air supply demand according to the size of the air supply demand of the different positions of the window, the roof and the side wall, so that the reasonable distribution of the air supply volume is realized, that is, the comfort of the driver's room is met, the defogging and defrosting demand of the window is met, and good use effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air distribution structure of rail vehicles, and more particularly to an air distribution device and a rail vehicle. BACKGROUND

[0002] In the air conditioning ventilation system of a rail vehicle, ventilation of the driver's cab is an important component. The driver works in the driver's cab for a long time, and creating a comfortable internal environment in the driver's cab is crucial to improving the working efficiency and happiness of the driver.

[0003] In order to ensure the uniformity of the internal temperature distribution of the driver's cab, air is often supplied at different heights in the vehicle. In addition, in order to prevent problems such as icing or frosting of the window glass, a separate glass air supply component is often needed to ensure that each region can be reasonably allocated the required air volume.

[0004] The existing air volume distribution structure of the driver's cab is generally directly installed on the C groove at the top of the vehicle. When air is discharged, the air is sent into the driver's cab through an adjustable air outlet installed on the roof. Although the adjustable air outlet can adjust the air supply angle to achieve air supply at different heights in the driver's cab, the air discharge position is located at the top of the vehicle body, and the air speed is relatively high when air is supplied, which is not comfortable for the driver. In addition, the above-mentioned air supply method also easily causes uneven temperature distribution inside the vehicle body, affecting the comfort of the driver's cab. SUMMARY

[0005] The purpose of the present application is to provide an air volume distribution device and a rail vehicle, which can avoid direct blowing to the driver, effectively distribute the air volume of the vehicle, and improve the comfort of the driver's cab.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide an air volume distribution device, which comprises a distribution box connected to the roof skeleton of the vehicle. The top of the distribution box is connected to an air inlet pipe. The inside of the distribution box is provided with a first partition and a second partition. The first partition and the second partition divide the inner cavity of the distribution box into a window air supply cavity, a roof air supply cavity, and a side wall air supply cavity. A top air supply hole is provided on the bottom wall of the distribution box and communicates with the roof air supply cavity. A window air supply pipe and a side wall air supply pipe are respectively provided on the side wall of the distribution box and communicate with the window air supply cavity and the side wall air supply cavity. The window air supply pipe is arranged in the side wall and extends above the window. The side wall air supply pipe is arranged in the side wall and extends to the middle part of the side wall.

[0007] In one possible implementation, a leg air supply pipe is further provided on the side wall of the distribution box and communicates with the side wall air supply cavity. The leg air supply pipe is arranged in the side wall and extends to the lower part of the side wall. The leg air supply pipe and the side wall air supply pipe are connected to the same side wall of the distribution box.

[0008] In a possible implementation, the first partition plate extends obliquely from top to bottom to the front side of the vehicle body, and the lower edge of the first partition plate is connected to the lower edge of the front inner wall of the distribution box; the second partition plate extends obliquely from top to bottom to the outer side of the vehicle body, and the lower edge of the second partition plate is connected to the lower edge of the left inner wall or the right inner wall of the distribution box.

[0009] In some embodiments, two second partition plates are symmetrically arranged in the distribution box, and the lower edges of the two second partition plates are respectively and correspondingly connected to the lower edges of the left inner wall and the right inner wall of the distribution box; and two side wall air supply cavities are arranged, and each side wall air supply cavity is respectively connected with a side wall air supply pipe and a leg air supply pipe.

[0010] In a possible implementation, the top of the distribution box is provided with an air inlet connected with the air inlet pipe, and the air inlet is connected with the vehicle window air supply cavity, the vehicle roof air supply cavity and the side wall air supply cavity.

[0011] In some embodiments, the upper edge of the first partition plate is connected to the inner top wall of the distribution box, and part of the upper edge is located in the air inlet; the two side edges of the first partition plate are respectively and correspondingly connected to the left inner wall and the right inner wall of the distribution box; the upper edge of the second partition plate is connected to the inner top wall of the distribution box, and part of the upper edge is located in the air inlet; the front side edge of the second partition plate is connected to the rear wall of the first partition plate; and the rear side edge of the second partition plate is connected to the rear inner wall of the distribution box.

[0012] In a possible implementation, the bottom plate of the distribution box is a perforated plate, and a plurality of top air supply holes are arranged on the bottom plate of the distribution box at intervals; and the diameter of the top air supply hole is less than 5 mm.

[0013] In a possible implementation, the distribution box is connected with two groups of connecting seats for being connected with the roof framework, and the two groups of connecting seats are arranged at intervals along the running direction of the vehicle body; each group of connecting seats comprises two connecting seats symmetrically arranged on the left and right sides of the distribution box.

[0014] In some embodiments, the connecting seat comprises an extension plate connected to the side wall of the distribution box and a connecting plate connected to the upper edge of the extension plate; the connecting plate is connected to the lower side of the roof framework through a connecting piece; and a reinforcing rib plate with a plate surface extending vertically is arranged between the extension plate and the connecting plate.

[0015] Compared with the prior art, the scheme shown in the embodiment of the application has the wind volume distribution device, the wind volume distribution device distributes the wind volume sent by the air inlet pipe by the distribution box, the first partition plate and the second partition plate arranged in the distribution box divide the distribution box into the vehicle window air supply cavity, the vehicle roof air supply cavity and the side cavity air supply cavity, the positions of the first partition plate and the second partition plate are set according to the size of the air supply volume demand of the vehicle window, the vehicle roof and the side wall at different positions, the cavity sizes of the vehicle window air supply cavity, the vehicle roof air supply cavity and the side cavity air supply cavity meet the actual air supply demand, the reasonable distribution of the air supply volume is realized, that is, the comfort of the driver's room is met, the defogging and defrosting demand of the vehicle window is met, and good use effect is achieved.

[0016] The application further provides a rail vehicle comprising the wind volume distribution device. The vehicle distributes the wind volume sent by the air inlet pipe by the distribution box, the first partition plate and the second partition plate arranged in the distribution box divide the distribution box into the vehicle window air supply cavity, the vehicle roof air supply cavity and the side cavity air supply cavity, the positions of the first partition plate and the second partition plate are set according to the size of the air supply volume demand of the vehicle window, the vehicle roof and the side wall at different positions, the cavity sizes of the vehicle window air supply cavity, the vehicle roof air supply cavity and the side cavity air supply cavity meet the actual air supply demand, the reasonable distribution of the air supply volume is realized, that is, the comfort of the driver's room is met, the defogging and defrosting demand of the vehicle window is met, and good use effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0018] Figure 1 A top view structural schematic diagram of the use state of the wind volume distribution device provided by the embodiment of the application is shown.

[0019] Figure 2 A structural schematic diagram of another angle of the wind volume distribution device in the embodiment of the application is shown. Figure 1

[0020] A partial structural schematic diagram of another angle of the wind volume distribution device in the embodiment of the application is shown. Figure 3 Figure 2 A sectional view structural schematic diagram of A-A in the embodiment of the application is shown.

[0021] Figure 4 Figure 3 A sectional view structural schematic diagram of B-B in the embodiment of the application is shown.

[0022] Figure 5 A sectional view structural schematic diagram of C-C in the embodiment of the application is shown. Figure 3 ​​A cross-sectional structure of the middle B-B.

[0023] In the drawings:

[0024] 1. distribution box; 11. air inlet; 12. perforated plate; 13. top air outlet; 2. air inlet pipe; 3. first partition; 4. second partition; 51. window air supply cavity; 52. side wall air supply cavity; 53. roof air supply cavity; 54. window air supply pipe; 55. side wall air supply pipe; 56. leg air supply pipe; 6. connecting seat; 61. extension plate; 62. connecting plate; 63. reinforcing rib plate; 7. vehicle body. DETAILED DESCRIPTION

[0025] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clearly understood, the present application will be further described in detail below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0026] It should be noted that when an element is referred to as "being disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or several features. In the description of the present application, the meaning of "several" is two or more, unless otherwise explicitly and specifically limited.

[0027] Please see Figures 1 to 5The air volume distribution device and the rail vehicle provided by the present application are described as follows. The air volume distribution device comprises a distribution box 1 connected to a roof framework, an air inlet pipe 2 connected to the top of the distribution box 1, a first partition plate 3 and a second partition plate 4 arranged in the distribution box 1, wherein the first partition plate 3 and the second partition plate 4 divide the inner cavity of the distribution box 1 into a window air supply cavity 51, a roof air supply cavity 53 and a side wall air supply cavity 52, a roof air supply hole 13 is arranged on the bottom wall of the distribution box 1 and communicates with the roof air supply cavity 53, a window air supply pipe 54 and a side wall air supply pipe 55 are respectively arranged on the side wall of the distribution box 1 and communicate with the window air supply cavity 51 and the side wall air supply cavity 52, the window air supply pipe 54 is arranged in the side wall and extends above the window, and the side wall air supply pipe 55 is arranged in the side wall and extends to the middle part of the side wall.

[0028] Compared with the prior art, the air volume distribution device provided by the present application utilizes the distribution box 1 to distribute the air volume sent by the air inlet pipe 2, the first partition plate 3 and the second partition plate 4 arranged in the distribution box 1 divide the distribution box 1 into the window air supply cavity 51, the roof air supply cavity 53 and the side cavity air supply cavity, the positions of the first partition plate 3 and the second partition plate 4 are set according to the size of the air volume demand of the window, the roof and the side wall at different positions, the cavity sizes of the window air supply cavity 51, the roof air supply cavity 53 and the side cavity air supply cavity meet the actual air supply demand, the reasonable distribution of the air volume is realized, that is, the comfort of the driver's room is met, the defrosting and demisting demand of the window is met, and good use effect is achieved.

[0029] In the present embodiment, the internal space of the distribution box 1 is divided into multiple cavities which are not communicated with each other by the first partition plate 3 and the second partition plate 4, different proportions of air volume can be distributed to the window air supply cavity 51, the roof air supply cavity 53 and the side cavity air supply cavity according to the design demand, the roof air supply hole 13 is arranged as a hole structure because the bottom plate of the distribution box 1 faces the position above the driver's head, the uniform distribution of the air volume is realized, and the blowing wind speed is reduced.

[0030] The window air supply pipe 54 and the side wall air supply pipe 55 are used to supply air to the window and the side wall position respectively, the window air supply pipe 54 and the side wall air supply pipe 55 are flexible hoses made of flexible material, the reasonable arrangement in the three-dimensional space can be realized, the direction can be flexibly adjusted according to the required air supply position, and the temperature in the vehicle can be better adjusted. The above arrangement realizes the multi-area air supply in the driver's room, avoids the local air speed being too high or too low, reduces the temperature difference in the vehicle, realizes the reasonable distribution of the air volume, avoids the discomfort caused by the direct blowing to a certain part of the driver's body, ensures the temperature uniformity in the driver's room, and improves the body comfort of the driver.

[0031] In some possible implementation manners, the above-mentioned feature distribution box 1 adopts the structure as shown in Figures 1 to 5 . Referring to Figures 1 to 5The side wall of the distribution box 1 is further provided with a leg air supply pipe 56 in communication with the side wall air supply cavity 52, the leg air supply pipe 56 is arranged in the side wall and extends to the lower part of the side wall, and the leg air supply pipe 56 and the side wall air supply pipe 55 are connected to the same side wall of the distribution box 1.

[0032] In the embodiment, the distribution box 1 is further provided with the leg air supply pipe 56, so as to send the air flow in the distribution box 1 to the lower part of the side cavity, that is, the position corresponding to the driver's leg, so that the air flow can be effectively supplied at different height positions of the side wall, the comfort of the driver is ensured, the discomfort caused by the direct blowing of the air flow is avoided, the air flow in each area is effectively reduced, and the balance and comfort of the temperature in the driver's room are ensured.

[0033] Specifically, the leg air supply pipe is in communication with the side wall air supply cavity 52, and the air volume in the side wall air supply cavity 52 should be correspondingly set as the total air volume of the leg air supply pipe 56 and the side wall air supply pipe 55, so as to ensure the effective supply of the air flow at the side wall position, improve the balance of the temperature in the driver's room, and reduce the temperature difference in the vehicle.

[0034] In some possible implementation manners, the first partition plate 3 and the second partition plate 4 adopt the structure as shown in Figures 1 to 5 . Referring to Figures 1 to 5 , the first partition plate 3 extends obliquely from top to bottom to the front side of the vehicle body 7, and the lower edge of the first partition plate 3 is connected to the lower edge of the front inner wall of the distribution box 1, and the second partition plate 4 extends obliquely from top to bottom to the outer side of the vehicle body 7, and the lower edge of the second partition plate 4 is connected to the lower edge of the left inner wall or the right inner wall of the distribution box 1.

[0035] In the embodiment, the first partition plate 3 extends obliquely from top to bottom to the front side of the vehicle body 7, and is used for supplying air flow to the position of the vehicle window, the oblique direction of the first partition plate 3 is convenient for guiding the direction of the air flow sent by the air inlet pipe, so that the air flow is smoothly supplied to the front side, and is conveniently sent into the vehicle window air supply pipe 54, the icing or rime of the vehicle window is effectively prevented, the clarity of the vehicle window is effectively improved, the clarity of the driver's field of view is improved, and the safety of driving is improved.

[0036] On this basis, the second partition plate 4 extends obliquely to the outer side of the vehicle body 7, can guide the air flow to the positions of the two side walls, is convenient for realizing the orderly delivery of the air volume to the positions of the side walls, avoids the blocking and interference of the air flow in the distribution box 1, improves the smoothness of the air flow supply, provides stable air volume for the leg air supply pipe 56 and the side wall air supply pipe 55, and ensures the balance and stability of the air supply at the side and lower parts of the driver's room.

[0037] In some embodiments, the second partition plate 4 can adopt the structure as shown in Figure 2 . Referring to Figure 2, two second partitions 4 are symmetrically arranged in the distribution box 1, the lower edges of the two second partitions 4 are respectively connected to the lower edges of the left and right inner walls of the distribution box 1, and the side wall air supply cavities 52 are also provided with two, each of the side wall air supply cavities 52 is respectively connected with a side wall air supply pipe 55 and a leg air supply pipe 56.

[0038] In the embodiment, in order to realize the synchronous air supply to the positions of the two side walls, two side wall air supply cavities 52 are arranged in the distribution box 1 near the positions of the two side walls, each of the side wall air supply cavities 52 is respectively connected with a leg air supply pipe 56 and a side wall air supply pipe 55, the leg air supply pipe 56 is used to supply air to the lower part of the side of the cab, and the side wall air supply pipe 55 is used to supply air to the middle part of the side of the cab, so that the air volume is reasonably allocated and supplied.

[0039] In some possible implementation manners, the above-mentioned feature distribution box 1 adopts a structure as shown in Figures 1 to 5 . Referring to Figures 1 to 5 , the top of the distribution box 1 is provided with an air inlet 11 connected with the air inlet pipe 2, and the air inlet 11 is connected with the window air supply cavity 51, the roof air supply cavity 53 and the side wall air supply cavity 52.

[0040] In the embodiment, the air inlet 11 arranged at the top of the distribution box 1 is used to be connected with the air inlet pipe 2, and the airflow in the air inlet pipe 2 is the airflow supplied to adjust the temperature in the vehicle. The airflow is respectively sent to the window air supply cavity 51, the roof air supply cavity 53 and the side wall air supply cavity 52 through the air inlet 11, and the air volume is allocated according to the cross-sectional area of each cavity connected with the air inlet 11, so that the uniformity of the air supply volume of each subsequent region is ensured.

[0041] In some embodiments, the above-mentioned feature first partition 3 and second partition 4 can adopt a structure as shown in Figures 1 to 5 . Referring to Figures 1 to 5 , the upper edge of the first partition 3 is connected to the inner top wall of the distribution box 1, and part of the upper edge is located in the air inlet 11, the two side edges of the first partition 3 are respectively connected to the left and right inner walls of the distribution box 1, the upper edge of the second partition 4 is connected to the inner top wall of the distribution box 1, and part of the upper edge is located in the air inlet 11, the front side edge of the second partition 4 is connected to the rear side wall of the first partition 3, and the rear side edge of the second partition 4 is connected to the rear inner wall of the distribution box 1.

[0042] In the embodiment, the upper edge of the first partition 3 is connected to the inner top wall of the distribution box 1, and part of the upper edge of the first partition 3 passes through the air inlet 11 in the horizontal direction, so that the air inlet 11 is effectively connected with the window air supply cavity 51, and the airflow is smoothly delivered to the window air supply cavity 51, so that the air supply demand of the window position is met.

[0043] Similarly, the upper edge of the second partition plate 4 is connected to the inner top wall of the distribution box 1, and part of the upper edge of the second partition plate 4 passes through the air inlet 11 in the horizontal direction, so that the air inlet 11 is in communication with the side wall air supply cavities 52 on both sides, so that the air flow is smoothly delivered into the side wall air supply cavities 52, and the air supply demand at the side wall position is met.

[0044] In addition to supplying air to the above-mentioned cavities, part of the cross section of the air inlet 11 is in communication with the roof air supply cavity 53, and air flow is blown downward through the roof air supply through hole, so that uniform air supply at the roof position is realized, the temperature difference in the vehicle is reduced, and the comfort of the driver's room is improved.

[0045] In some possible implementation manners, the above-mentioned feature distribution box 1 adopts a structure as shown in Figures 1 to 5 Referring to Figures 1 to 5 , the bottom plate of the distribution box 1 is a perforated plate 12, and a plurality of roof air supply holes 13 are arranged on the bottom plate of the distribution box 1 in a spaced manner, and the diameter of the roof air supply hole 13 is less than 5 mm.

[0046] In this embodiment, the bottom plate of the distribution box 1 adopts a perforated plate 12 structure, and the cavities on the perforated plate 12 are used as roof air supply holes 13, the diameter of the roof air supply hole 13 is less than 5 mm, the uniform distribution of air flow is realized, the direct blowing effect on the head of the driver is avoided, and the comfort of air supply is improved.

[0047] In some possible implementation manners, the above-mentioned feature distribution box 1 adopts a structure as shown in Figures 1 to 5 Referring to Figures 1 to 5 , the distribution box 1 is connected with two groups of connecting seats 6 for connecting with the roof framework, and the two groups of connecting seats 6 are arranged in a spaced manner along the running direction of the vehicle body 7, and each group of connecting seats 6 includes two connecting seats 6 symmetrically arranged on the left and right sides of the distribution box 1.

[0048] In this embodiment, the connecting seats 6 arranged on the distribution box 1 are used for connecting with the roof framework, and at least two groups of connecting seats 6 are arranged in a spaced manner along the running direction of the vehicle body 7, so that reliable connection of the distribution box 1 at different positions with the roof framework is realized, and the structural firmness is ensured.

[0049] On this basis, sealing cotton is further arranged between the lower part of the distribution box 1 and the built-in flat top, so as to realize flexible contact between components, avoid structural damage caused by rigid collision, and also help to reduce noise generated by structural vibration.

[0050] In some embodiments, the above-mentioned feature connecting seat 6 can adopt a structure as shown in Figures 1 to 5 Referring to ​ , the connecting seat 6 includes an extension plate 61 connected to the side wall of the distribution box 1 and a connecting plate 62 connected to the upper edge of the extension plate 61, the connecting plate 62 is connected to the lower part of the roof framework through a connecting piece, and a reinforcing rib plate 63 with a plate surface extending in the vertical direction is further arranged between the extension plate 61 and the connecting plate 62.

[0051] In the embodiment, each group of the connecting seat 6 includes two connecting seats 6 arranged symmetrically left and right, so that four connecting seats 6 are connected on the same distribution box 1. The arrangement of the multiple connecting seats 6 ensures the reliable connection of the distribution box 1 with the roof frame. The connecting seat 6 is in the form of the combination of the extension plate 61, the connecting plate 62 and the reinforcing rib plate 63, which simplifies the connection structure and ensures the reliability of the connection structure.

[0052] Based on the same inventive concept, the embodiment of the application further provides a railway vehicle including the air volume distribution device. The vehicle uses the distribution box 1 to distribute the air volume sent by the air inlet pipe 2, and the first partition plate 3 and the second partition plate 4 arranged in the distribution box 1 divide the distribution box 1 into the window air supply cavity 51, the roof air supply cavity 53 and the side cavity air supply cavity. According to the size of the air supply demand of the different positions of the window, the roof and the side wall, the positions of the first partition plate 3 and the second partition plate 4 are set, so that the cavity sizes of the window air supply cavity 51, the roof air supply cavity 53 and the side cavity air supply cavity meet the actual air supply demand, and the reasonable distribution of the air supply volume is realized, that is, the comfort of the driver's room is met, the defrosting and defogging demand of the window is met, and good use effect is obtained.

[0053] The above is only the preferred embodiment of the application, and is not used to limit the application. Any modification, equivalent replacement and improvement within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. Air volume distribution device, characterized in that The utility model provides a kind of air distribution box for vehicle, including the distribution box (1) connected on roof skeleton, the top of distribution box (1) is connected with air inlet pipe (2), the inside of distribution box (1) is equipped with first baffle (3) and second baffle (4), first baffle (3) and second baffle (4) divide the inner cavity of distribution box (1) into window air supply cavity (51), roof air supply cavity (53) and side wall air supply cavity (52), the bottom wall of distribution box (1) is equipped with top air supply hole (13) with roof air supply cavity (53) communication, the side wall of distribution box (1) is equipped with window air supply pipe (54) with window air supply cavity (51) communication and side wall air supply pipe (55) with side wall air supply cavity (52) communication respectively, window air supply pipe (54) is arranged in side wall and extends to the upper of window, side wall air supply pipe (55) is arranged in side wall and extends to the middle of side wall. The top of distribution box (1) is equipped with air inlet (11) with air inlet pipe (2) communication, air inlet (11) is communicated with window air supply cavity (51), roof air supply cavity (53) and side wall air supply cavity (52) respectively. The upper edge of first baffle (3) is connected to the inner top wall of distribution box (1), and part of the upper edge is located in air inlet (11) correspondingly, the two side edges of first baffle (3) are correspondingly connected to the left and right inner walls of distribution box (1). The upper edge of second baffle (4) is connected to the inner top wall of distribution box (1), and part of the upper edge is located in air inlet (11) correspondingly, the front side edge of second baffle (4) is connected to the rear wall of first baffle (3), and the rear side edge of second baffle (4) is connected to the rear inner wall of distribution box (1).

2. The air volume distributing device of claim 1, wherein, The side wall of distribution box (1) is also equipped with leg air supply pipe (56) with side wall air supply cavity (52) communication, leg air supply pipe (56) is arranged in side wall and extends to the lower part of side wall, and leg air supply pipe (56) and side wall air supply pipe (55) are connected to the same side wall of distribution box (1).

3. The air volume distributing device of claim 2, wherein, First baffle (3) extends obliquely from top to bottom to the front side of vehicle body (7), and the lower edge of first baffle (3) is connected to the lower edge of the front inner wall of distribution box (1), second baffle (4) extends obliquely from top to bottom to the outside of vehicle body (7), and the lower edge of second baffle (4) is connected to the lower edge of the left or right inner wall of distribution box (1).

4. The air volume distributing device of claim 3, wherein, Second baffle (4) is symmetrically arranged in distribution box (1), and the lower edge of second baffle (4) is correspondingly connected to the lower edge of the left or right inner wall of distribution box (1), and side wall air supply cavity (52) is also provided with two, and side wall air supply pipe (55) and leg air supply pipe (56) are communicated with each side wall air supply cavity (52) respectively.

5. The air volume distributing device according to any one of claims 1 to 4, wherein The bottom plate of the distribution box (1) is a perforated plate (12), and the top air supply holes (13) are arranged at intervals on the bottom plate of the distribution box (1), and the diameter of the top air supply holes (13) is less than 5 mm.

6. The air volume distributing device according to any one of claims 1 to 4, wherein Two groups of connecting seats (6) for connecting with the roof frame are connected to the distribution box (1), and the two groups of connecting seats (6) are arranged at intervals along the direction of the vehicle body (7), and each group of connecting seats (6) comprises two connecting seats (6) symmetrically arranged on the left and right sides of the distribution box (1).

7. The air volume distributing device of claim 6, wherein The connecting seat (6) comprises an extension plate (61) connected to the side wall of the distribution box (1) and a connecting plate (62) connected to the upper edge of the extension plate (61), the connecting plate (62) is connected below the roof frame through a connecting piece, and a reinforcing rib plate (63) extending in the vertical direction is arranged between the extension plate (61) and the connecting plate (62).

8. Railway vehicle, characterized in that The rail vehicle comprises the air volume distribution device according to any one of claims 1-7.

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