Railway vehicle and air supply and drainage system between equipment thereof

Abstract

The application discloses a rail vehicle and a drainage and air supply system between equipment rooms thereof, and relates to the technical field of rail vehicles. In order to solve the problem that the existing equipment rooms cannot simultaneously realize drainage and air supply and the integrity of the drainage and air supply is not high, the drainage and air supply system between the equipment rooms comprises an equipment room arranged at the front end of a vehicle body chassis and a driver's room arranged at the rear end of the vehicle body chassis, and sealing structures are arranged at the connection positions of the equipment room and the vehicle body chassis and the driver's room. The top of the equipment room is provided with a first opening for mounting a ventilation cover plate, the first opening is provided with a top cover drainage and air supply structure for drainage and air supply, the front end of the equipment room is provided with a second opening for mounting a grille door, the second opening is provided with an air duct drainage and air supply structure for drainage and air supply, and the two sides of the equipment room are provided with third openings for mounting maintenance doors, and the third openings are provided with maintenance door drainage structures for drainage.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail vehicle technology, and more particularly, to a rail vehicle and a drainage and air supply system between equipment rooms thereof. BACKGROUND

[0002] In recent years, the rail vehicle technology has been continuously developed, and the drainage or air supply structure design at the whole vehicle level has various characteristics. However, the drainage and air supply scheme for the component level system of the rail vehicle still needs to be further studied. The independent equipment room outside is a common structure form of the rail vehicle, and since the equipment room is directly exposed to the operation environment, the drainage and air supply problem must be considered in the structure design.

[0003] The common drainage sealing scheme has the way of sealing and isolating water flow through the waterproof door and the sealing strip, and the way of rain eave and water guide pipe drainage, but both of the two schemes cannot consider the ventilation requirement of the air supply module inside the equipment room. At present, the existing equipment room cannot consider the drainage and air supply functions, and the drainage and air supply scheme focuses on a structure or a functional area, and the overall and systematicness of the drainage and air supply design is insufficient.

[0004] Therefore, how to solve the problem that the existing equipment room cannot consider the drainage and air supply functions and the overallness of the drainage and air supply is not strong is a problem to be solved by the technical personnel in the field at present. SUMMARY

[0005] In order to more clearly have in view of this, the purpose of the present application is to provide an equipment room drainage and air supply system, which is a systematic solution considering the drainage and air supply functions, and the drainage and air supply structure is designed from the overall design of the equipment room, so as to improve the systematicness and overallness of the drainage and air supply function of the equipment room.

[0006] Another purpose of the present application is to provide a rail vehicle comprising the above-mentioned equipment room drainage and air supply system, which can effectively realize the drainage and air supply of the equipment room.

[0007] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0008] An equipment room drainage and air supply system, comprising: an equipment room arranged at the front end of a car body chassis and a driver's room arranged at the rear end of the car body chassis, and a sealing structure arranged at the connection between the equipment room and the car body chassis and the driver's room.

[0009] The top of the equipment room is provided with a first opening for mounting a ventilation cover plate, and the first opening is provided with a top cover drainage and air supply structure for drainage and air supply. The front end of the equipment room is provided with a second opening for mounting a grille door, and the second opening is provided with an air duct drainage and air supply structure for drainage and air supply. The two sides of the equipment room are provided with third openings for mounting maintenance doors, and the third openings are provided with maintenance door drainage structures for drainage.

[0010] Preferably, the top cover drainage and air supply structure comprises:

[0011] a top cover skin arranged at the periphery of the first opening, the top of the top cover skin having an outwardly turned C-shaped edge;

[0012] a cover plate support arranged at the top of the top cover skin, the cover plate support being in an inverted L-shaped structure, and a plurality of ventilation holes being arranged on the side plate of the cover plate support perpendicular to the top cover skin.

[0013] Preferably, a ventilation cover plate is detachably arranged on the cover plate support, the ventilation cover plate being in an inverted U-shaped structure, the ventilation cover plate and the cover plate support both being provided with threaded holes for mounting a locking device, the locking device being used to lock the ventilation cover plate to the cover plate support, and an air inlet being left between the ventilation cover plate and the top cover skin.

[0014] Preferably, the locking device comprises:

[0015] a connecting seat arranged at the bottom end surface of the top plate of the cover plate support and connected with the cover plate support;

[0016] a connecting piece arranged at the threaded holes of the ventilation cover plate and the cover plate support and threadedly connected with the connecting seat;

[0017] a gasket arranged at the periphery of the connecting piece and located between the connecting piece and the ventilation cover plate.

[0018] Preferably, the air duct drainage and air supply structure comprises:

[0019] an outer baffle arranged at the second opening, the bottom of the outer baffle being provided with a drainage opening;

[0020] an inner baffle arranged at the inner side of the outer baffle, a water passage being formed between the outer baffle and the inner baffle, the bottom end of the inner baffle having a slope, and the middle portions of the inner baffle and the outer baffle both being provided with ventilation openings.

[0021] Preferably, the ventilation opening of the inner baffle is provided with an inner air duct, the inner air duct being connected with the inner baffle through a connecting structure, the ventilation opening of the outer baffle is provided with a grille door, and the grille door is connected with the outer baffle through a square lock.

[0022] Preferably, the maintenance door drainage structure comprises a door frame assembly arranged at the third opening, and the middle portion of the door frame assembly is provided with a through hole for mounting a maintenance door.

[0023] Preferably, the door frame assembly comprises two door frame plates arranged side by side at the third opening, the door frame plates being in a back-to-back shape structure, a center column being arranged between the two door frame plates, a water baffle being arranged on the door frame plate, the water baffle being in a back-to-back shape structure, a turned edge being arranged at the periphery of the water baffle, the turned edge being arranged in a direction away from the third opening, the maintenance door being mounted on the outer side of the water baffle, and the maintenance door being hingedly connected with the equipment.

[0024] Preferably, the circumferential direction of the access door is provided with a sealing strip, and the sealing strip is internally provided with a metal clamping piece.

[0025] A rail vehicle comprises the inter-department drainage and air supply system as claimed in any one of the preceding claims.

[0026] The inter-department drainage and air supply system comprises an inter-department arranged at the front end of the vehicle body frame and a driver's room arranged at the rear end of the vehicle body frame, and the connection portions of the inter-department and the vehicle body frame and the driver's room are provided with sealing structures. The sealing structures are arranged to prevent rainwater from flowing into the inter-department from the gaps between the inter-department and the vehicle body frame and the driver's room. The top of the inter-department is provided with a first opening for mounting a ventilation cover plate, and the first opening is provided with a top cover drainage and air supply structure for drainage and air supply. The top cover drainage and air supply structure can prevent rainwater from entering the inter-department and can also ventilate the inter-department, so that air enters the inter-department from the top cover drainage and air supply structure and the first opening. The front end of the inter-department is provided with a second opening for mounting a grating door, and the second opening is provided with an air duct drainage and air supply structure for drainage and air supply. The air duct drainage and air supply structure prevents rainwater from entering the inter-department and directly flows out under the action of the air duct drainage and air supply structure after passing through the grating door, so that air enters the inter-department after passing through the grating door and the air duct drainage and air supply structure. The two sides of the inter-department are provided with third openings for mounting access doors, and the third openings are provided with access door drainage structures for drainage. The access door drainage structures are arranged to make rainwater directly flow out through the access door drainage structures.

[0027] The inter-department mainly comprises the top cover drainage and air supply structure, the air duct drainage and air supply structure, and the access door drainage structure to form an integral drainage and air supply system of the inter-department, so that the inter-department can have drainage and air supply functions and well meet actual needs. Moreover, the top cover drainage and air supply structure, the air duct drainage and air supply structure, and the access door drainage structure of the inter-department are independent of each other, have simple structures, and are easy to operate, thereby effectively reducing manufacturing and design costs. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, 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 constitute the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0029] Figure 1 A side view of the inter-department drainage and air supply system provided by the present application;

[0030] Figure 2 A structural schematic view of the inter-department drainage and air supply system provided by the present application;

[0031] Figure 3 Side view of the roof drainage and air supply structure provided by the present application;

[0032] Figure 4 Partial enlarged view of the roof drainage and air supply structure provided by the present application;

[0033] Figure 5 Side view of the air duct drainage and air supply structure provided by the present application;

[0034] Figure 6 Structure schematic view of the air duct drainage and air supply structure provided by the present application;

[0035] Figure 7 Partial enlarged view of the air duct drainage and air supply structure provided by the present application;

[0036] Figure 8 Structure schematic view of the access door drainage structure provided by the present application;

[0037] Figure 9 Partial enlarged view of the access door drainage structure provided by the present application.

[0038] Reference signs:

[0039] 01-ventilation cover plate, 02-grating door, 03-access door;

[0040] 1-vehicle body frame;

[0041] 2-equipment room;

[0042] 3-driver's cab;

[0043] 4-sealing structure;

[0044] 5-roof drainage and air supply structure, 51-roof skin, 52-cover plate support, 53-locking device, 531-connection seat, 532-connection piece, 533-gasket;

[0045] 6-air duct drainage and air supply structure, 61-outer baffle, 62-inner baffle, 63-inner air duct, 64-connection structure, 65-square lock;

[0046] 7-access door drainage structure, 71-door frame plate, 72-center pillar, 73-water baffle, 74-sealing strip. DETAILED DESCRIPTION

[0047] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those ordinarily skilled in the art without creative effort belong to the scope of the present application.

[0048] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those ordinarily skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0049] It should be noted that the following "up, front, back, left, right" and other orientation words are defined based on the drawings of the specification.

[0050] The core of the present application is to provide an equipment room drainage and air supply system, which is a systematic solution that takes into account drainage and air supply functions, and the drainage and air supply structure is designed from the overall design of the equipment room 2 to improve the systematicness and integrity of the equipment room 2 drainage and air supply function. Another core of the present application is to provide a rail vehicle comprising the above-mentioned equipment room drainage and air supply system, which can effectively realize the drainage and air supply of the equipment room 2.

[0051] Please refer to Figures 1-9 An equipment room drainage and air supply system comprises a vehicle body chassis 1, an equipment room 2, a driver's room 3, a sealing structure 4, a top cover drainage and air supply structure 5, an air duct drainage and air supply structure 6 and a maintenance door drainage structure 7.

[0052] Specifically, the equipment room 2 is arranged at the front end of the vehicle body frame 1, and the driver's room 3 is arranged at the rear end of the vehicle body frame 1. The connection parts of the equipment room 2 and the vehicle body frame 1 and the driver's room 3 are respectively provided with a sealing structure 4. The sealing structure 4 is arranged to prevent rainwater from flowing into the equipment room 2 from the gaps between the equipment room 2 and the vehicle body frame 1 or the driver's room 3. The top of the equipment room 2 is provided with a first opening for mounting a ventilation cover plate 01. The first opening is provided with a top cover drainage and ventilation structure 5 for drainage and ventilation. The top cover drainage and ventilation structure 5 arranged at the first opening can prevent rainwater from entering the equipment room 2 and ventilate the equipment room 2. The air enters the equipment room 2 from the top cover drainage and ventilation structure 5 and the first opening. The front end of the equipment room 2 is provided with a second opening for mounting a grating door 02. The second opening is provided with an air duct drainage and ventilation structure 6 for drainage and ventilation. The air duct drainage and ventilation structure 6 is arranged to prevent rainwater from entering the equipment room 2. The rainwater directly flows out under the action of the air duct drainage and ventilation structure 6 after passing through the grating door 02 and does not enter the equipment room 2. At the same time, the air enters the equipment room 2 after passing through the grating door 02 and the air duct drainage and ventilation structure 6. The left and right sides of the equipment room 2 are provided with third openings for mounting maintenance doors 03. The third openings are provided with maintenance door drainage structures 7 for drainage. The maintenance door drainage structures 7 are arranged to make the rainwater directly flow out through the maintenance door drainage structures 7.

[0053] The equipment room 2 mainly comprises the top cover drainage and ventilation structure 5, the air duct drainage and ventilation structure 6, and the maintenance door drainage structure 7 to form an integrated drainage and ventilation system of the equipment room 2. The equipment room 2 can have drainage and ventilation functions, has high integration, and well meets actual requirements. The top cover drainage and ventilation structure 5, the air duct drainage and ventilation structure 6, and the maintenance door drainage structure 7 of the equipment room 2 are independent of each other, have simple structures, and are easy to operate, thereby effectively reducing manufacturing and design costs.

[0054] The equipment room 2 is arranged on the vehicle body frame 1. The rear of the equipment room 2 is the driver's room 3. The connection surfaces of the equipment room 2 and the driver's room 3 and the connection surfaces of the equipment room 2 and the vehicle body frame 1 are respectively provided with sealing structures 4 composed of sealing rubber to prevent rainwater from flowing into the equipment room 2 from the gaps between the equipment room 2 and the vehicle body frame 1 or the driver's room 3.

[0055] In an embodiment, the connection of the equipment room 2 and the vehicle body frame 1 and the driver's room 3 can be achieved by welding instead of the scheme of achieving the connection of the equipment room 2 and the vehicle body frame 1 and the driver's room 3 by using the sealing structure 4.

[0056] The equipment room 2 adopts a driver's room structure. The top cover drainage and ventilation structure 5 is arranged at the top of the equipment room 2. The air duct drainage and ventilation structure 6 is arranged at the front of the equipment room 2. The maintenance door drainage structure 7 is arranged at the left and right sides of the equipment room 2. The sealing structure 4 and the maintenance door drainage structure 7 together form an equipment room drainage and ventilation system.

[0057] The equipment room drainage and air supply system arranged in the above manner can make the equipment room 2 have drainage and air supply functions by systematically designing the drainage and air supply of the equipment room 2, and can well meet the actual requirements, and the top cover drainage and air supply structure 5, the air duct drainage and air supply structure 6 and the maintenance door drainage structure 7 of the equipment room 2 are independent of each other, have simple structures and high operability, and can effectively reduce manufacturing and design costs.

[0058] Please refer to Figure 3 and Figure 4 The top cover drainage and air supply structure 5 comprises a top cover skin 51 and a cover bracket 52, the top cover skin 51 is arranged in the circumferential direction of the first opening, the top of the top cover skin 51 is provided with an outwardly turned C-shaped edge, the cover bracket 52 is arranged on the top of the top cover skin 51 and has an inverted L-shaped structure, and a plurality of ventilation holes are arranged on the vertical surface of the cover bracket 52.

[0059] It should be noted that the C-shaped edge of the top cover skin 51, the inverted L-shaped cover bracket 52 above the top cover skin 51 and the ventilation cover plate 01 on the cover bracket 52 jointly form the top cover drainage and air supply structure 5, when raindrops fall on the top cover skin 51, the C-shaped edge of the top cover skin 51 can block the rainwater, so that the rainwater is discharged from the left and right sides of the equipment room 2, the ventilation holes are arranged on the vertical surface of the cover bracket 52, so that the installation requirements can be met and the ventilation effect can be improved, and the airflow is not affected by the structure and can freely enter and exit the ventilation holes on the vertical surface of the cover bracket 52.

[0060] In the above case, the ventilation cover plate 01 is detachably arranged on the cover bracket 52, the ventilation cover plate 01 has an inverted U-shaped structure, the ventilation cover plate 01 and the cover bracket 52 are both provided with threaded holes for mounting a locking device 53, the locking device 53 is used for locking the ventilation cover plate 01 to the cover bracket 52, and an air inlet is left between the ventilation cover plate 01 and the top cover skin 51.

[0061] It can be understood that the threaded holes are uniformly distributed on the cover bracket 52 to facilitate embedding of the locking device 53, the ventilation cover plate 01 is fastened to the cover bracket 52 by the locking device 53, and the air inlet is left between the ventilation cover plate 01 and the top cover skin 51 to enable the airflow to enter the equipment room 2 from the air inlet.

[0062] Rainwater flows along the direction of the arrow in FIG. Figure 3 After encountering the C-shaped edge of the top cover skin 51, the airflow flows to the left and right sides of the equipment room, and the airflow flows along the direction of the arrow in FIG. Figure 4 The airflow enters the space between the ventilation cover plate 01 and the cover bracket 52 from the air inlet between the top cover skin 51 and the ventilation cover plate 01, and enters the equipment room from the ventilation holes on the cover bracket 52.

[0063] Please refer to Figure 4The locking device 53 comprises a connecting seat 531, a connecting piece 532 and a gasket 533. The connecting seat 531 is arranged on the bottom end surface of the top plate of the cover bracket 52 and connected with the cover bracket 52. The connecting piece 532 is arranged in the threaded hole of the ventilation cover plate 01 and the cover bracket 52 and is threadedly connected with the connecting seat 531. The gasket 533 is arranged in the circumferential direction of the connecting piece 532 and between the connecting piece 532 and the ventilation cover plate 01.

[0064] It should be noted that the connecting seat 531 is pre-welded on the cover bracket 52. The connecting piece 532 is matched with the connecting seat 531 to lock the ventilation cover plate 01 on the cover bracket 52. The gasket 533 is arranged between the connecting piece 532 and the ventilation cover plate 01 to prevent the connecting piece 532 from loosening.

[0065] Please refer to Figure 5 , Figure 6 and Figure 7 , the air duct drainage and air supply structure 6 comprises an outer baffle 61 and an inner baffle 62. The outer baffle 61 is arranged on the second opening. The bottom of the outer baffle 61 is provided with a drainage port. The inner baffle 62 is arranged on the inner side of the outer baffle 61. The space between the outer baffle 61 and the inner baffle 62 is a water channel. The bottom end of the inner baffle 62 has a slope. The middle part of the inner baffle 62 and the outer baffle 61 are both provided with ventilation ports.

[0066] It can be understood that the outer baffle 61 is pre-connected to the front facade of the equipment room 2 framework, and the inner baffle 62 is pre-connected to the inner facade of the equipment room 2 framework, which together form a water channel in the shape of a mouth character with the equipment room 2 framework, so that the rainwater flows out from the drainage port at the bottom of the outer baffle 61 along the water channel. As shown in Figure 5 , a cavity for guiding water is formed between the outer baffle 61 and the inner baffle 62. The direction of the water flow is Figure 5 the direction of the arrow in the middle.

[0067] Please refer to Figure 6 and Figure 7 , the ventilation port of the inner baffle 62 is provided with an inner air duct 63, which is connected with the inner baffle 62 through a connecting structure 64. The ventilation port of the outer baffle 61 is provided with a grille door 02, which is connected with the outer baffle 61 through a square lock 65.

[0068] It should be noted that the inner air duct 63 is fixed to the inner baffle 62 through the connecting structure 64, and the grille door 02 is buckled on the outer baffle 61 through the square lock 65, which together form a drainage and air supply structure with the water channel. Since the grille door 02 cannot block the rainwater, when the rainwater enters through the grille door 02, the inner baffle 62 can block and collect the rainwater, so that it is guided to flow out through the drainage port opened on the outer baffle 61. The airflow is not affected by the structure and can directly enter the equipment room 2 through the grille door 02 and the inner air duct 63. Figure 7The direction of the middle arrow is the direction of the flow of rainwater and air.

[0069] Please refer to Figure 8 and Figure 9 The access door drainage structure 7 comprises a door frame assembly arranged at the third opening, and a through hole for mounting the access door 03 is arranged at the middle part of the door frame assembly.

[0070] It can be understood that the rainwater is guided through the door frame assembly, and the access door 03 is mounted through the through hole, so that personnel can enter and exit the equipment room 2 through the access door 03 to maintain and repair the equipment in the equipment room 2.

[0071] In the above embodiment, the door frame assembly comprises two door frame plates 71 arranged side by side at the third opening, the door frame plate 71 is in a character shape structure, a center column 72 is arranged between the two door frame plates 71, a water baffle 73 is arranged on the door frame plate 71, the water baffle 73 is in a character shape structure, a flange is arranged on the circumference of the water baffle 73, the flange is arranged away from the third opening, the access door 03 is mounted on the outer side of the water baffle 73, and the access door 03 is hinged to the equipment room 2.

[0072] It should be noted that the character shape drainage structure composed of the side wall skeleton of the equipment room 2, the center column 72, the door frame plate 71 and the water baffle 73, when the rainwater hits the access door 03, the rainwater will flow out of the vehicle along the flange of the water baffle 73, and the direction of the rainwater flow is Figure 8 the direction of the middle arrow.

[0073] In the above case, a sealing strip 74 is arranged on the circumference of the access door 03, and a metal clamping piece is arranged in the sealing strip 74.

[0074] It can be understood that the sealing strip 74 with the metal clamping piece arranged on the circumference of the access door 03 can make the sealing strip 74 more firmly clamped on the access door 03, and the rainwater can be prevented from flowing into the equipment room 2 through the gap of the access door 03 through the arrangement of the sealing strip 74.

[0075] In summary, the equipment room drainage and air supply system provided by the present application can consider the drainage and air supply functions of the equipment room 2, and the effective drainage and air supply effects of the equipment room 2 can be realized through the overall and systematic drainage and air supply structure.

[0076] In addition to the equipment room drainage and air supply system disclosed in the above embodiments, the present application also provides a railway vehicle comprising the above equipment room drainage and air supply system, and the structures of other parts of the railway vehicle can refer to the prior art, which will not be described herein.

[0077] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0078] The rail vehicle and the air supply and drainage system between the equipment of the rail vehicle are described in detail above. The principles and implementation manners of the present application are described by using specific examples in this paper, and the above description of the examples is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A drainage and ventilation system for equipment rooms, characterized in that: include: An equipment room (2) is provided at the front end of a vehicle body chassis (1) and a driver's cab (3) is provided at the rear end of the vehicle body chassis (1), wherein the connection between the equipment room (2), the vehicle body chassis (1) and the driver's cab (3) is provided with a sealing structure (4); The top of the equipment room (2) is provided with a first opening for installing a ventilation cover (01), the first opening is provided with a top cover drainage and air supply structure (5) for drainage and air supply, the front end of the equipment room (2) is provided with a second opening for installing a grille door (02), the second opening is provided with an air duct drainage and air supply structure (6) for drainage and air supply, and both sides of the equipment room (2) are provided with third openings for installing an inspection door (03), the third opening is provided with an inspection door drainage structure (7) for drainage; The air duct drainage and air supply structure (6) comprises: An outer baffle (61) is provided at the second opening, and a drainage outlet is provided at the bottom of the outer baffle (61); The inner baffle (62) is provided on the inner side of the outer baffle (61), a water channel is provided between the outer baffle (61) and the inner baffle (62), the bottom end of the inner baffle (62) has an inclination, and ventilation holes are provided in the middle of the inner baffle (62) and the outer baffle (61).

2. The equipment room drainage and air supply system according to claim 1, characterized in that: The top cover drainage and air supply structure (5) comprises: A top cover skin (51) is provided in the circumferential direction of the first opening, and the top of the top cover skin (51) has an outward-turned C-shaped curling edge; A cover plate bracket (52) is provided on the top of the roof skin (51), the cover plate bracket (52) is an inverted L-shaped structure, and a plurality of ventilation holes are provided on a side panel of the cover plate bracket (52) perpendicular to the roof skin (51).

3. The equipment room drainage and air supply system according to claim 2, characterized in that: The ventilation cover (01) is detachably mounted on the cover bracket (52); the ventilation cover (01) is an inverted U-shaped structure; both the ventilation cover (01) and the cover bracket (52) are provided with threaded holes for mounting a locking device (53); the locking device (53) is used to lock the ventilation cover (01) to the cover bracket (52); and an air inlet is left between the ventilation cover (01) and the top cover skin (51).

4. The equipment room drainage and air supply system according to claim 3, characterized in that: The locking device (53) comprises: A connecting seat (531) is provided on the bottom end surface of the top plate of the cover plate bracket (52) and is connected to the cover plate bracket (52); A connecting member (532) is provided in the threaded holes of the ventilation cover plate (01) and the cover plate bracket (52) and is threadedly connected to the connecting seat (531); A gasket (533) is provided in the circumferential direction of the connecting member (532) and is located between the connecting member (532) and the ventilation cover plate (01).

5. The equipment room drainage and air supply system according to claim 1, characterized in that: The ventilation opening of the inner baffle (62) is provided with an inner air duct (63), and the inner air duct (63) is connected to the inner baffle (62) via a connecting structure (64). The ventilation opening of the outer baffle (61) is provided with the grille door (02), and the grille door (02) is connected to the outer baffle (61) via a square lock (65).

6. The equipment room drainage and air supply system according to claim 1, characterized in that: The inspection door drainage structure (7) comprises a door frame assembly provided at the third opening, and a through hole for installing the inspection door (03) is provided in the middle of the door frame assembly.

7. The equipment room drainage and air supply system according to claim 6, characterized in that: The door frame assembly comprises two door frame plates (71) arranged in parallel at the third opening, the door frame plates (71) being of a U-shaped structure, a center column (72) being provided between the two door frame plates (71), a water baffle (73) being provided on the door frame plates (71), the water baffle (73) being of a U-shaped structure, a flange being provided in the circumferential direction of the water baffle (73), the flange being arranged in a direction away from the third opening, the inspection door (03) being installed on the outer side of the water baffle (73), and the inspection door (03) being hinged to the equipment room (2).

8. The equipment room drainage and ventilation system according to claim 7, characterized in that: A sealing strip (74) is provided around the inspection door (03), and a metal clamping piece is provided inside the sealing strip (74).

9. A rail vehicle, characterized in that: The equipment room drainage and ventilation system includes any one of claims 1-8.

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