Rail vehicle and cab structure of a rail vehicle

Abstract

The application discloses a track vehicle and a cab structure of the track vehicle. The track vehicle comprises the cab structure, which comprises a cab base and a head cover. The cab base is connected to the bottom end of the head cover. The head cover and the cab base enclose a cab cabin. A driver console is arranged in the cab cabin. A main structure of a vehicle body is connected to the head cover. The main structure of the vehicle body forms a vehicle body cabin. A driver seat is arranged in the vehicle body cabin. The driver seat is close to the driver console. By moving the driver seat backward to the main structure of the vehicle body, the length of the cab structure can be significantly reduced. When the size of the main structure of the vehicle body is fixed, the length of the whole vehicle can be reduced by reducing the length of the cab structure.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically, to a rail vehicle and a driver's cab structure for the rail vehicle. Background Technology

[0002] Conventional rail vehicles, such as subways and light rails, consist of a driver's cab structure and a main body structure. The sum of the lengths of the driver's cab structure and the main body structure constitutes the overall length of the vehicle.

[0003] Generally speaking, the length of the main body structure of a vehicle cannot be adjusted as required by the standard. How to reduce the length of the driver's cab structure to reduce the overall length of the vehicle has been a goal pursued by those skilled in the art. Summary of the Invention

[0004] This invention provides a new technical solution for a rail vehicle and its driver's cab structure. By improving the structure of the rail vehicle, the length of the driver's cab structure is significantly reduced, thereby shortening the overall length of the rail vehicle.

[0005] On one hand, the present invention provides a rail vehicle and a driver's cab structure for the rail vehicle. The rail vehicle includes a driver's cab structure comprising a driver's cab base and a headgear. The driver's cab base is connected to the bottom end of the headgear, and the headgear and the driver's cab base form a driver's cab compartment. A driver's control panel is disposed within the driver's cab compartment. A main body structure is connected to the headgear, and the main body structure forms a car body cabin. A driver's seat is disposed within the car body cabin, and the driver's seat is close to the driver's control panel. By moving the driver's seat rearward into the main body structure, the length dimension of the driver's cab structure can be significantly reduced. With a fixed length for the main body structure, reducing the length dimension of the driver's cab mechanism can reduce the overall length of the vehicle.

[0006] On the other hand, the present invention provides a driver's cab structure for rail vehicles, wherein the head cover is an integral fiberglass structure and a connecting seat is provided on the head cover, and the connecting seat is threadedly connected to the main structure of the vehicle body.

[0007] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0008] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0009] Figure 1 This is a side view of the rail vehicle in an embodiment of the present invention;

[0010] Figure 2 yes Figure 1 Enlarged schematic diagram of part of the structure;

[0011] Figure 3 yes Figure 1 Top view;

[0012] Figure 4 yes Figure 2 A schematic diagram of a partial structure;

[0013] Figure 5 yes Figure 1 A schematic diagram of the driver's boarding door structure;

[0014] Figure 6 This is a top view of the rear driver's cab door pillar;

[0015] Figure 7 This is a structural diagram of the corner section;

[0016] Figure 8 yes Figure 2 A magnified schematic diagram of a local structure;

[0017] Figure 9 This is a schematic diagram of the front end of a rail vehicle.

[0018] Figure 10 This is a top view of the front driver's cab door pillar;

[0019] Figure 11 yes Figure 9 Enlarged schematic diagram of part of the structure;

[0020] Figure 12 yes Figure 11 A partial structural diagram.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100. Driver's cab structure; 110. Driver's cab base; 120. Head cover; 1201. Side section; 121. Central section; 122. Side section;

[0023] 130. Driver's cab; 140. Driver's control panel;

[0024] 200. Main body structure; 210. Body compartment; 211. Body sub-compartment; 220. Driver's seat; 230. Upper crossbeam of the body; 240. Body underframe; 241. Lower side beam of the underframe; 251. Inverted U-shaped reinforcement; 260. Large curved beam of the roof; 261. Roof;

[0025] 300. Driver's boarding door; 310. Front driver's cab door pillar; 311. First section; 312. Second section; 313. Third section; 320. Rear driver's cab door pillar;

[0026] 400. Upper beam of side wall; 410. Step section; 4101. Step surface; 420. Corner section; 421. Tail end of corner section; 422. Head end of corner section; 4201. Outer side section; 423. Boss section; 424. Support surface section; 4241. Top edge side section; 425. Reinforcing structure; 426a. Connector; 426b. Connector; 430. Side wall panel; 441. First weld section; 442. Second weld section;

[0027] 500. Emergency escape door; 510. Escape door pillar; 520. Reinforcing plate;

[0028] 600. Window structure;

[0029] 700, fairing;

[0030] 800, Anti-climb device. Detailed Implementation

[0031] 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.

[0032] In embodiments of this application, a rail vehicle is provided. For example... Figure 1 and Figure 2 As shown, the rail vehicle includes a driver's cab structure 100 and a main body structure 200. The driver's cab structure 100 includes a driver's cab base 110 and a headgear 120. The driver's cab base 110 is connected to the bottom end of the headgear 120. The headgear 120 and the driver's cab base 110 form a... Figure 3 The driver's cab 130 shown in the figure has a driver's control panel 140 installed inside it.

[0033] like Figure 3 As shown, the main body structure 200 is connected to the head cover 120, and the main body structure 200 forms the body compartment 210. The driver's seat 220 is arranged in the body compartment 210, and the driver's seat 220 is close to the driver's control panel 140.

[0034] Specifically, the rail vehicles in this application can be low-speed or medium-low-speed rail vehicles such as subways, light rail, and urban rail.

[0035] The external outline of the driver's cab structure 100 is determined by the shape of the head cover 120. The driver's cab base 110 is detachably connected to the main body structure 200, and the head cover 120 is detachably connected to the main body structure 200, thereby facilitating the removal and maintenance of the driver's cab structure 100.

[0036] The bottom end face of the hood 120 presses against the upper surface of the driver's cab base 110 and is fixed to the driver's cab base 110 by welding and threaded connection, together forming a Figure 3 The driver's cab compartment is 130.

[0037] like Figure 3 As shown, the main body structure 200 encloses the body compartment 210. The body compartment 210 includes a sub-compartment 211, which is located at the front end of the main body structure 200 and communicates with the driver's cab 130. The driver's seat 220 is disposed within the sub-compartment 211. The driver's seat 220 is located close to the driver's control panel 140 to facilitate the driver's operation of the vehicle. "Closer" means that the driver's seat 220 is located within the sub-compartment 211 closer to the driver's cab 130, thus allowing it to be near the driver's control panel 140.

[0038] When the length of the main body structure 200 is a specified size, by placing the driver's seat 220 inside the main body structure 200, the driver's seat 220 can avoid occupying space inside the driver's cab structure 100, thereby reducing the length of the driver's cab structure 100 in the overall length direction of the vehicle and shortening the overall length of the vehicle.

[0039] Meanwhile, the method of setting up the driver's seat 220 in the main body structure 200 will only occupy a very limited space in the vehicle compartment 210 and will not affect the passenger capacity of the main body structure 200.

[0040] In one alternative implementation, such as Figure 2 As shown, the hood 120 includes a central section 121, which protrudes a certain distance toward the front of the vehicle and forms an arc-shaped transition. Side sections 122 extend from the left and right sides of the central section 121 in the width direction of the vehicle, and the side sections 122 extend along the length direction of the vehicle to the main body structure 200 for threaded connection with the main body structure 200, and a sealing operation is performed at the connection position.

[0041] The central section 121 of the hood 120 has a small curvature, approximating a straight line. If the curvature of the central section 121 were large, it would occupy too much of the overall length space of the vehicle. By setting the central section 121 with a smaller curvature, the length dimension of the driver's cab structure 100 can be further reduced.

[0042] Optionally, the central section 121 of the hood 120 is tilted at a certain angle in the height direction from the driver's control panel 140 toward the front of the vehicle. The angle at which the central section 121 of the hood 120 is tilted is acute, so as to maintain a predetermined distance from the driver's control panel 140. Of course, the central section 121 of the hood 120 can also be arranged in an approximately vertical direction, thereby further reducing the length of the driver's cab structure 100.

[0043] In another embodiment, the hood 120 is a one-piece fiberglass structure. That is, the hood 120 is a structure formed by integral processing of fiberglass.

[0044] For example, fiberglass can be processed using methods such as compression molding and extrusion molding.

[0045] The hood 120 is equipped with a connecting seat, which is bonded to the fiberglass. The connecting seat is threadedly connected to the main body structure 200. Thus, the hood 120 is directly and detachably connected to the main body structure 200.

[0046] By adopting the method in this embodiment, the steel frame structure of the conventional support head cover 120 can be replaced, simplifying the driver's cab structure 100, while reducing the amount of welding and assembly time of the driver's cab structure 100.

[0047] In other embodiments, the top of the hood 120 in the height direction is flush with the roof 261 of the main vehicle structure 200. That is, the dimensions of the hood 120 in the height direction are the same as the dimensions of the roof 261 of the main vehicle structure 200 in the height direction.

[0048] Of course, it can also be like this Figure 2 As shown, the top of the hood 120 protrudes from the roof 261 of the main body structure 200 in the height direction, and a fairing 700 is connected between the top of the hood 120 and the roof 261 of the main body structure 200.

[0049] One end of the fairing 700 is connected to the middle section 121 of the hood 120, and the rear end of the fairing 700 extends backward and downward to press against the upper surface of the roof 261 and form a connection with the roof 261.

[0050] Specifically, the two ends of the fairing 700 are bolted to the front cover 120 and the roof 261, respectively, which facilitates the maintenance and replacement of the fairing 700.

[0051] The fairing 700 is made of fiberglass. Several reinforcing structures and connecting seats are provided between the inner surface of the fairing 700 and the roof 261. The fairing 700 is threadedly connected to the roof 261 via the connecting seats.

[0052] By setting up the deflector 700, airflow in the roof 261 area is guided, reducing resistance during train operation. At the same time, the head cover 120, which is larger in the height direction than the roof 261, increases the vertical space of the driver's cab 130, providing more space for the cabinets and electrical equipment within the driver's cab structure 100.

[0053] In some embodiments of this application, the main body structure 200 includes an upper crossbeam 230 and a chassis 240. The chassis 240 includes a lower side beam 241. The upper crossbeam 230 is arranged along the width direction of the vehicle and is located at the upper part of the upper crossbeam 230 in the height direction. The upper crossbeam 230 is made of aluminum alloy profile.

[0054] See also Figure 2 To increase the driver's escape route and improve vehicle safety, the driver's cab structure 100 is also equipped with an emergency escape door 500. The emergency escape door 500 is located in the middle section 121 of the head cover 120.

[0055] like Figure 4 As shown, the emergency escape door 500 includes two escape door pillars 510. The top of the escape door pillars 510 is connected to the upper crossbeam 230 of the main body structure 200. At least a portion of the escape door pillars 510 is embedded in the headgear 120 along the thickness direction and connected to the headgear 120.

[0056] Optionally, the two escape door pillars 510 are L-shaped, and several reinforcing plates 520 are provided on the ventral side of the escape door pillars 510.

[0057] Furthermore, the driver's cab structure 100 also includes a viewing window structure 600 disposed on the hood 120. The viewing window structure 600 extends from one side in the width direction of the vehicle to a position beyond the centerline of the central section 121, and the emergency escape door 500 is located on the other side of the central section 121.

[0058] like Figure 2 As shown, the viewing window structure 600 is located on the first side and in the center of the vehicle, with the center position situated at the centerline of the central section 121. The emergency escape door 500 is located on the second side of the vehicle. The first and second sides correspond to the left and right sides of the centerline of the central section 121, respectively. Alternatively, the viewing window structure 600 can also be located on the second side of the vehicle, with the emergency escape door 500 on the first side. This results in a larger lateral span for the viewing window structure 600, extending from the first side to the location of the emergency escape door 600, thus providing the driver with a continuous and wide field of vision.

[0059] like Figure 2 and Figure 3As shown, the vehicle also includes a driver's boarding door 300, which is located on the left and right sides of the vehicle. The driver's boarding door 300 is located at the position where the head cover 120 connects with the main body structure 200.

[0060] Specifically, see Figure 5 and Figure 6 The driver's cab door 300 includes a front driver's cab door pillar 310 and a rear driver's cab door pillar 320. Among the front driver's cab door pillar 310 and the rear driver's cab door pillar 320, the front driver's cab door pillar 310 is closer to the head cover 120.

[0061] The front driver's cab door pillar 310 is supported in the height direction between the upper crossbeam 230 of the vehicle body and the lower side beam 241 of the underframe, and the driver's cab base 110 is connected to the vehicle body underframe 240. An anti-climb device 800 is also installed on the driver's cab base 110. The side section 122 of the hood 120 is connected to the front driver's cab door pillar 310 in the length direction.

[0062] Therefore, the front driver's cab door pillar 310 supports the upper crossbeam 230 of the vehicle body and also serves to connect the headliner 120. At the same time, placing the front driver's cab door pillar 310 at the position where the headliner 120 connects to the main structure 200 of the vehicle body can also reduce the space occupied by the driver's boarding door 300 in the main structure 200 of the vehicle body.

[0063] In another embodiment, see Figure 2 The main body structure 200 also includes a side wall upper beam 400 extending along its length, and a side wall panel 430 is provided between the side wall upper beam 400 and the vehicle body underframe 240. The side wall upper beam 400 is also connected to the front driver's cab door pillar 310. The side wall upper beam 400 is parallel to the underframe lower beam 241.

[0064] Therefore, the front driver's cab door pillar 310 also serves to support the upper beam 400 on the side wall. This further increases the functional integration of the front driver's cab door pillar 310 and simplifies the beam frame structure of the main body structure 200.

[0065] The driver's boarding door 300 also includes a rear driver's cab door pillar 320, which is parallel to the front driver's cab door pillar 310. The upper beam 400 on the side wall is partially pressed against the top of the rear driver's cab door pillar 320. This forms a door-shaped driver's boarding door 300 structure.

[0066] like Figure 2 and Figure 5 As shown, the upper beam 400 on the side wall includes a step portion 410, which is located at the end of the upper beam 400 on the side wall near the headgear 120. The step portion 410 has a step surface 4101.

[0067] See Figure 7 The side wall upper beam 400 also includes a corner section 420, which has a bent structure and forms an approximately right-angle bend. The tail end 421 of the corner section 420 is connected to the step section 410, and the head end 422 extends along the vehicle height direction away from the step surface 4101 and is inserted into the top of the front driver's cab door pillar 310. An approximately right angle means that the angle between the centerlines of the head end 422 and the tail end 421 of the corner section 420 is between 80° and 95°.

[0068] Optionally, the corner portion 420 is further provided with a reinforcing structure 425, which is located at the corner position of the corner portion 420, thereby further improving the structural strength of the corner portion 420.

[0069] The corner portion 420 and the step portion 410 are either an integral structure or separate structures; when they are separate structures, the corner portion 420 and the step portion 410 are interlocked.

[0070] like Figure 7 As shown, the corner portion 420 also includes an outer portion 4201, which is located on the side opposite to the driver's boarding door 300. The side where the driver's boarding door 300 is located is... Figure 5 The location indicated by the middle arrow A.

[0071] like Figure 8 As shown, the hood 120 includes a side portion 1201 located on the side surface of the hood 120 in the vehicle's length direction. A portion of the side portion 1201 and the stepped portion 410 are disposed opposite each other in the vehicle's length direction and directly or indirectly abut against and seal against the stepped surface 4101. A portion is pressed against and connected to the outer side portion 4201 in the height direction.

[0072] In this way, the hood 120 can be positioned during installation to facilitate the assembly between the vehicle body and the main structure 200. Simultaneously, the hood 120 is supported by the side wall upper beam 400 and the driver's cab front door pillar, allowing the forces acting on the hood 120 during operation to be transmitted through the driver's cab front door pillar to the vehicle body upper crossbeam 230 and the vehicle body underframe 240, and then through the corner section 420 to the side wall upper beam 400.

[0073] Optionally, see Figure 8 and Figure 9 The main body structure 200 also includes a roof beam 260, which supports the roof 261. The end of the roof beam 260 is located between the side portion 1201 and the step surface 4101 in the longitudinal direction. That is, the side portion 1201 is indirectly pressed against the step surface 4101 in the longitudinal direction of the vehicle through the end of the roof beam 260, and the roof beam 260 and the step surface 4101 are connected by welding.

[0074] A first weld portion 441 is provided at the insertion position between the corner portion 420 and the step portion 410. The first weld portion 441 is located at the tail end 421 of the corner portion 420. This avoids the stress concentration problem caused by welding at the bending position of the corner portion 420. The first weld portion 441 is formed by resistance welding or laser welding, or other welding methods, which will not be described in detail here.

[0075] like Figure 8 As shown, the end of the large curved beam 260 of the vehicle body covers the first weld portion 441 in the height direction.

[0076] In this way, the structural strength of the first weld section 441 can be strengthened by the large curved beam 260 of the vehicle body, and the stress on the first weld section 441 can be further transferred to the roof 261. In addition, the force on the hood 120 can be transferred to the roof 261 in the length direction.

[0077] It is understandable that, such as Figure 8 As shown, a second weld portion 442 is formed at the position where the first end 422 of the corner portion 420 intersects with the front driver's cab door pillar 310. The second weld portion 442 is also spaced apart from the turning position of the corner portion 420, thereby avoiding stress concentration at the corner portion 420.

[0078] It is understood that those skilled in the art can determine the positions of the first weld portion 441 and the second weld portion 442 by adjusting the lengths of the tail end 421 and the head end 422 of the corner portion 420.

[0079] See also Figure 7 The vehicle also includes a connector 426b, which is located at the top of the front driver's cab door pillar 310 or at the front end 422 of the corner portion 420. During assembly, the front end of the corner portion 420 is inserted into the top of the front driver's cab door pillar 310.

[0080] Similarly, a connector 426a is provided at the tail end 421 of the corner portion 420 or the step portion 410, thereby achieving a plug-in fit between the two. In addition, during the welding process, the connectors 426a and 426b can also be retained as welding backing plates, thereby further improving the welding strength.

[0081] In one embodiment, see continue to see Figure 7 The corner portion 420 includes a boss portion 423. The thickness direction of the corner portion 420 is the width direction of the vehicle, and the thickness direction is... Figure 7The direction perpendicular to the paper surface. In the thickness direction, a portion of the corner portion 420 protrudes to form a boss portion 423, and a portion recessed relative to the boss portion 423 forms a support surface 424. The support surface 424 and the boss portion 423 form a step in the thickness direction. The boss portion 423 extends from the tail end 421 of the corner portion 420 to the head end 422 of the corner portion 420.

[0082] The boss portion 423 is also a bent structure, and the outer side portion 4201 is located on the side opposite to the boss portion 423 and the driver's boarding door 300.

[0083] The boss portion 423 is located behind the corner portion 420 in the longitudinal direction, and the support surface 424 is located in front. That is, the support surface 424 is connected to the outer portion 4201. The outer portion 4201 is the outer edge surface of the boss portion 423.

[0084] like Figures 7 to 12 As shown, during the installation of the headgear 120, the headgear 120 connects with the corner portion 420 along its length. The support surface 424 is located at the starting position where the headgear 120 and the corner portion 420 are inserted. The support surface 424 is tightly fitted and connected to the inner wall of the headgear 120 in the width direction of the vehicle to form a support. The side portion 1201 of the headgear 120 abuts against the outer portion 4201 in the length direction and forms a connection.

[0085] Therefore, the installation of the headgear 120 further serves a positioning function. At the same time, the boss portion 423 allows for a smooth transition between the headgear 120 and the corner portion 420. By providing the support face 424, the contact area between the headgear 120 and the corner portion 420 can be increased, thereby improving the support of the corner portion 420 for the headgear 120 and strengthening the seal between the corner portion 420 and the headgear 120.

[0086] The support face 424 also includes a top edge side 4241, which is located on the side of the support face 424 away from the driver's boarding door 300.

[0087] The main body structure also includes an inverted U-shaped reinforcement 251. In the width direction, one end 251a of the inverted U-shaped reinforcement 251 is pressed against the upper crossbeam 230 of the vehicle body, and the other end 251b extends and is pressed against the top edge side 4241. The rear side 2511 of the inverted U-shaped reinforcement 251 in the length direction is connected to the roof beam 260.

[0088] In the above embodiments, see Figure 9 and Figure 10 The front driver's cab door pillar 310 includes a first section 311, a second section 312, and a third section 313. The first section 311 and the second section 312 are arranged in the length direction of the vehicle and are connected.

[0089] The third section 313 and the second section 312 overlap in the width direction of the vehicle, with the third section 313 located outside the second section 312, that is, on the side away from the vehicle body compartment 210.

[0090] Combination Figure 9 , Figure 11 as well as Figure 12 The top of the second section 312 extends beyond the top of the third section 313 in the height direction to connect with the support surface 424; the upper crossbeam 230 of the vehicle body is connected to the side of the second section 312 away from the support surface 424.

[0091] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A rail vehicle, characterized in that, include: The driver's cab structure (100) includes a driver's cab base (110) and a head cover (120). The driver's cab base (110) is connected to the bottom end of the head cover (120). The head cover (120) and the driver's cab base (110) form a driver's cab compartment (130). A driver's control panel (140) is provided inside the driver's cab compartment (130). The main body structure (200) is connected to the driver's cab structure (100), and the main body structure (200) forms a body compartment (210). The body compartment (210) includes a body sub-compartment (211), which is located at the front end of the main body structure (200). The driver's seat (220) is disposed in the body sub-compartment (211) and is close to the driver's control panel (140). The main body structure (200) is also provided with a driver boarding door (300), which is located at the position where the head cover (120) connects with the main body structure (200); The hood (120) includes a central section (121) and a side section (122). The central section (121) is the front end face of the rail vehicle. The driver's cab structure also includes an emergency escape door (500). The emergency escape door (500) includes two door support columns (510). At least a portion of the door support columns (510) is embedded in the hood (120) along the thickness direction and connected to the hood (120). The side section (122) extends from both sides of the central section (121) along the length direction of the vehicle to the main body structure (200) and is threadedly connected to the main body structure (200), with a sealing operation performed at the connection point. The main body structure (200) includes a body upper crossbeam (230) and a body underframe (240). The body upper crossbeam (230) is arranged along the width direction of the vehicle and is located above the body underframe (240) in the height direction. The driver's boarding door (300) includes a front driver's cab door pillar (310) and a rear driver's cab door pillar (320). The front driver's cab door pillar (310) is supported in the height direction between the upper crossbeam (230) of the vehicle body and the vehicle body underframe (240). The driver's cab base (110) is connected to the vehicle body underframe (240), and the headgear (120) is connected to the front driver's cab door pillar (310). The main structure of the vehicle body (200) also includes a side wall upper beam (400), which extends along the length of the vehicle to the front driver's cab door pillar (310) and is connected to the upper crossbeam (230) of the vehicle body through the front driver's cab door pillar (310). The side wall upper beam (400) includes a step portion (410) and a corner portion (420). The step portion (410) is located at the end of the side wall upper beam (400) near the headgear (120), and the step portion (410) has a step surface (4101). The tail end (421) of the corner section (420) is connected to the step section (410), and the head end (422) extends along the vehicle height direction and is connected to the top of the front driver's cab door pillar (310). The corner section (420) includes an outer side (4201), which is located on the side of the corner section (420) away from the driver's boarding door (300). The hood (120) also includes a side portion (1201), which is located on the side of the hood (120) in the length direction of the vehicle. Part of the side portion (1201) directly or indirectly abuts against the step surface (4101) in the length direction of the vehicle and is sealed to the step surface (4101). Part of the side portion (1201) is pressed and connected to the outer side portion (4201) in the height direction. The corner portion (420) and the step portion (410) are separate structures. The tail end (421) of the corner portion (420) is inserted into the step portion (410). The first end (422) of the corner section (420) is inserted into the top end of the front driver's cab door pillar (310).

2. The rail vehicle according to claim 1, characterized in that, A first weld portion (441) is formed at the insertion position of the corner portion (420) and the step portion (410), and the first weld portion (441) is away from the corner position of the corner portion (420).

3. The rail vehicle according to claim 2, characterized in that, The corner portion (420) includes a boss portion (423) and a supporting surface portion (424), wherein the boss portion (423) extends from the tail end (421) of the corner portion (420) to the head end (422) of the corner portion (420). The width direction of the vehicle is defined as the thickness direction of the corner portion (420). In the thickness direction of the corner portion (420), a portion of the corner portion (420) protrudes outward to form a boss portion (423). The portion that forms a recess relative to the boss portion (423) is the support surface (424). The support surface (424) and the boss portion (423) form a step in the thickness direction. The outer portion (4201) is located on the boss portion (423), and the support surface (424) is connected to the outer portion (4201). The support surface (424) is in close contact with the inner wall of the hood (120) in the width direction of the vehicle to form support.

4. The rail vehicle according to claim 3, characterized in that, The support surface (424) also includes a top edge side portion (4241) located on the side of the support surface (424) away from the driver's boarding door (300); The main body structure (200) also includes an inverted U-shaped reinforcement (251). In the width direction, one end (251a) of the inverted U-shaped reinforcement (251) is pressed against the upper crossbeam (230) of the vehicle body, and the other end (251b) extends and is pressed against the top edge side (4241).

5. The rail vehicle according to claim 4, characterized in that, The front driver's cab door pillar (310) includes a second section (312) and a third section (313), the third section (313) and the second section (312) are stacked in the width direction of the vehicle, and the third section (313) is located outside the second section (312); The top of the second segment (312) extends beyond the top of the third segment (313) in the height direction to connect with the support face (424); The second section (312) is connected to the side of the support surface (424) away from the upper crossbeam (230) of the vehicle body.

6. A driver's cab structure for use in the rail vehicle according to any one of claims 1-5, characterized in that, Includes a head cover (120), which is an integral fiberglass structure. The head cover (120) is provided with a connecting seat, which is threadedly connected to the main structure (200) of the vehicle body.

7. The driver's cab structure according to claim 6, characterized in that, The head cover (120) includes a middle section (121), which is the front end face of the rail vehicle; The driver's cab structure also includes an emergency escape door (500), at least a portion of which is embedded in and connected to the hood (120) along the thickness direction of the middle section (121).

8. The driver's cab structure according to claim 7, characterized in that, Includes a window structure (600) that extends from one side of the vehicle in the width direction to a position beyond the centerline of the middle section (121), and the emergency escape door (500) is located on the other side of the middle section (121).

9. The driver's cab structure according to any one of claims 6-8, characterized in that, The top of the hood (120) in the height direction is flush with the roof (261) of the main body structure (200); or The top of the hood (120) protrudes from the roof (261) of the main body structure (200) in the height direction, and a fairing (700) is connected between the top of the hood (120) and the roof (261) of the main body structure (200).

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