Vehicle door capable of being installed with movable side windows and assembly method thereof

Abstract

The present invention discloses a vehicle door capable of being installed with a movable side window and an assembling method thereof. The vehicle door comprises a vehicle door frame, an inner door panel, a door lock, a movable side window, a reinforcing beam and a movable beam, the vehicle door frame comprising an outer door panel, an upper portion of the outer door panel being provided with a through hole matching the movable side window, a lower portion of the outer door panel being provided with an inwardly recessed sunken platform, and a door handle of the door lock being arranged in the sunken platform; the reinforcing beam is arranged at the lower portion of the vehicle door frame and is welded to the vehicle door frame, the thickness of the reinforcing beam being the distance between the inner and outer door panels, the reinforcing beam being Z-shaped along the width direction, spanning the entire width of the vehicle door frame, and having a variable cross-section in the sunken platform area; the movable beam is arranged at the middle portion of the vehicle door frame, connected to the vehicle door frame through a movable beam mounting seat, being located between the movable side window and the inner door panel along the thickness direction of the vehicle door, being L-shaped and having a flanged edge around the periphery; the size of the movable side window meets the escape passage requirements in the TSI 1302 specification, and at the same time, the vehicle door meets the strength requirements in the TB / T 3266 standard and can reduce the air resistance of the locomotive vehicle during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a vehicle door capable of being installed with movable side windows and an assembling method thereof. Background Art

[0002] Doors are crucial components of rail vehicles, serving as access points for drivers, passengers, and maintenance personnel. They provide functional functions such as separating spaces, sealing against rain, soundproofing, and providing thermal insulation. Locomotive entrance doors are typically hinged, located on the side walls of the driver's cab. To accommodate the driver's need for visibility and signal observation, movable side windows are installed between the entrance door and the control console. To avoid compromising the driver's operating and movement space, these windows are typically designed to slide upwards and downwards. However, some rail vehicles lack sufficient space for both the entrance door and movable side windows due to the limited cab space or the vehicle's front-end styling. This would result in interference between the movable side windows and the control console. This necessitated the development of a new type of locomotive door with movable side windows. These doors must meet the medium strength requirements of TB / T3266: This requires that when the door is locked and a uniformly distributed force of 800N is applied to a 400mm x 400mm area in the center of the door leaf along its opening direction for 15 minutes, the door structure must be free of welds, cracks, or permanent deformation. The size of the movable side windows on the door must also meet the requirements of the escape route in the TSI1302 specification, that is, to provide a minimum of 2000cm 2 The internal dimension should be at least 400mm to allow for the evacuation of trapped personnel. Existing locomotive entrance door locks come in two types: protruding from the locomotive door and recessed. To increase the effective width of the locomotive and reduce air resistance during operation (especially at high speeds), recessed entrance door locks are usually used. However, these locks occupy more space within the door, making door design more difficult.

[0003] With the development of rail vehicles, a Chinese utility model patent with publication number CN205063758U discloses a locomotive cab entrance door with a sliding window. This entrance door includes a cab entrance door, a sliding window mounted on the cab entrance door, and a handle located near the top of the sliding window. The bottom of the sliding window is connected to a balancing cylinder, which is vertically arranged with its bottom end fixed to the bottom of the cab entrance door and its top end fixedly connected to the bottom of the sliding window. This entrance door solves the problem of combining a vehicle door and a movable side window into one, but several issues remain. First, the dimensions of the sliding window used in this vehicle door are not specified, and the size of the sliding window used may be too small to meet the escape route requirements of the TSI 1302 standard. Second, the entrance door structure does not meet the strength requirements of the TB / T 3266 standard. Third, the door lock protrudes from the door surface, increasing air resistance during vehicle operation. These three issues limit the application scope of this vehicle door.

[0004] Chinese utility model patent publication number CN210564241U discloses a rail vehicle entrance door comprising a door panel system and a wiper system. The door panel system is hinged to the side wall of the rail vehicle cab, and the wiper system is screwed to the top of the door panel system. The door panel system includes a glass heating system, a door frame, and a door lock system. The glass heating system is mounted on the upper portion of the door frame, and the door lock system is fixedly mounted in the middle portion of the door frame. This entrance door has several issues: first, the door is equipped with fixed glass and non-movable side windows; second, the door lock is a single-lock structure, which prevents the door from being opened directly from the track surface by a locomotive in the inner corridor. Summary of the Invention

[0005] In response to the shortcomings of existing vehicle doors with movable side windows, the present invention discloses a vehicle door that can be installed with movable side windows and an assembly method thereof. The vehicle door that can be installed with movable side windows meets the requirements of the escape passage in the TSI 1302 specification and the strength requirements in the TB / T3266 standard, and can also reduce the air resistance of the locomotive vehicle during operation.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The door handle is provided with a recessed platform at the bottom of the door panel, and the door handle is provided with a recessed platform at the bottom of the door panel, and the door handle has a rotation trajectory within the recessed platform; the reinforcing beam is provided at the bottom of the door panel and is welded to the door panel, the thickness of the reinforcing beam is the distance between the inner and outer door panels, the reinforcing beam is Z-shaped along the width direction, spans the entire width of the door panel, and is subjected to a variable cross-section treatment in the recessed platform area; the movable beam is provided at the middle of the door panel and is connected to the door panel through a movable beam mounting seat, the movable beam is located between the movable side window and the inner door panel along the thickness direction of the door, is L-shaped and has a flange on the periphery; the movable side window is connected to the door panel through the side window mounting seat, and the movable side window can provide a window of at least 2000 cm 2 The window size should be at least 400mm.

[0008] Thus, the movable side windows used in the present invention can provide a minimum of 2000cm 2The window size is at least 400mm, and the upper portion of the outer door panel of the door frame features a through-hole that matches the movable side window. This solves the problem of the movable side window size not meeting the TSI 1302 escape route requirements due to the limited space in the driver's cab and the combined design of the movable side window and door. The movable side window's complex structure requires a reserved area in the door, which complicates the door structural design and hinders the spatial arrangement of other components. To ensure the door meets the strength requirements of the TB / T 3266 standard, an L-shaped reinforcement beam is installed at the lower portion of the door frame, along with a Z-shaped movable beam in the middle of the door frame, to enhance the door's strength and rigidity. To reduce air resistance during operation, an internally recessed door lock structure is employed. The lower portion of the outer door panel features an inwardly recessed platform, within which the door handle is located. Because this structure occupies more space in the door, the reinforcement beam layout is more difficult, and the reinforcement beam has a variable cross-section in the recessed area of the internally recessed door lock structure.

[0009] Furthermore, the reinforcing beam is welded together by reinforcing rib one, reinforcing rib two, reinforcing rib three and reinforcing rib four, wherein reinforcing rib one is an L-shaped beam, and reinforcing rib two, reinforcing rib three and reinforcing rib four are all U-shaped beams; the reinforcing beam is provided with a door panel mounting hole and a drain pipe mounting hole.

[0010] Furthermore, the side window mounting seat includes a side window mounting seat 1 arranged on the upper side facade of the door frame upright plate, a side window mounting seat 2 and a side window mounting seat 3 respectively arranged on the left and right side facades of the door frame upright plate. The side window mounting seat 1, the side window mounting seat 2 and the side window mounting seat 3 are all welded together by L-shaped beams and threaded blocks, and the space size between each side window mounting seat is larger than the size of the movable side window.

[0011] Furthermore, the movable beam mounting seat includes movable beam mounting seat 1, movable beam mounting seat 2, and movable beam mounting seat 3. The movable beam mounting seat 1 is arranged on the vertical plate on the hinge side of the middle part of the door frame, and the movable beam mounting seat 2 and movable beam mounting seat 3 are arranged on the vertical plate on the door lock side of the middle part of the door frame. The movable beam mounting seat 1, movable beam mounting seat 2, and movable beam mounting seat 3 are all welded together by L-shaped beams and threaded blocks, and the width dimension between movable beam mounting seat 1 and movable beam mounting seat 2 and movable beam mounting seat 3 is greater than the width dimension of the movable side window.

[0012] Furthermore, the door lock is a linkage lock, which includes a lock body, an upper door handle and a lower door handle. The lock body is fixed to the vehicle door frame by screws, the upper door handle is arranged on the inner side of the upper part of the linkage lock, and the lower door handle is arranged on the outer side of the lower part of the linkage lock.

[0013] Furthermore, the movable side window and the door frame are sealed by a sealing strip and sealant; a drainage pipe is welded to the door frame, and the drainage pipe of the movable side window is connected to the drainage pipe of the door frame.

[0014] Furthermore, it also includes a side window decorative frame, an inspection panel, and a hinge. The side window decorative frame and the inspection panel are fixedly connected to the inner door panel, and the hinge is fixedly connected to the door frame through a hinge mounting seat.

[0015] Furthermore, the hinge mounting seat includes an upper hinge mounting seat, a middle hinge mounting seat, and a lower hinge mounting seat. The upper hinge mounting seat, the middle hinge mounting seat, and the lower hinge mounting seat are respectively arranged at the upper, middle, and lower positions of the hinge side vertical plate of the vehicle door frame, and are all welded by a U-shaped beam with a trapezoidal cross-section and a threaded block. The upper hinge mounting seat and the middle hinge mounting seat are in the same area as the movable side window, and a notch is locally provided at the rib plate to avoid affecting the installation of the movable side window.

[0016] A method for assembling a vehicle door capable of being installed with a movable side window as described above comprises the following assembly steps:

[0017] S1. Weld the reinforcement beam, side window mounting bracket, hinge mounting bracket, movable beam mounting bracket, and drain pipe to the door frame.

[0018] S2. Connect the movable side window to the side window mounting base using fasteners, and connect the drainage pipe of the movable side window to the drainage pipe on the door frame;

[0019] S3, fixing the lock body of the linkage lock to the door frame through fasteners;

[0020] S4, fixing the movable beam to the movable beam mounting seat by fasteners;

[0021] S5. Fix the inner door panel to the door frame, reinforcement beam and movable beam using fasteners;

[0022] S6. Fix the side window inspection panel and the side window decorative frame to the inner door panel using fasteners;

[0023] S7. Fix the hinge to the door frame using fasteners;

[0024] S8. Secure the door handle of the interlocking lock to the vehicle door using fasteners.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The movable side windows used in the door can provide a minimum of 2000cm 2The window size is at least 400mm, and the upper part of the outer door panel of the door frame is provided with a through hole matching the movable side window. This solves the problem that the movable side window size is difficult to meet the escape route requirements in the TSI 1302 specification due to the limited space in the driver's cab and the combined design of the movable side window and the door.

[0027] 2. The door adopts an inward-sunken door lock structure. The lower part of the outer door panel is provided with an inward-concave platform. The door handle of the interlocking lock is set in the platform, and the rotation trajectory of the door handle of the door lock is within the platform, which can reduce the air resistance when the locomotive vehicle is running.

[0028] 3. The door reinforcement beam is installed at the bottom of the door frame and welded to it. The thickness of the reinforcement beam is the distance between the inner and outer door panels. It is Z-shaped along the width and spans the entire width of the door frame. The movable beam is installed in the middle of the door frame and connected to the door frame via a movable beam mounting bracket. The movable beam is located between the movable side window and the inner door panel along the thickness of the door. It is L-shaped and has a flanged edge. The installation of the reinforcement beam and movable beam enhances the strength and rigidity of the door, resolving the problem that the installation of movable side windows makes it difficult for the locomotive door to meet the door strength requirements of TB / T 3266. The reinforcement beam also has a variable cross-section in the sunken area, resolving the problem that the internally sunken door lock structure takes up more space and makes the reinforcement beam placement difficult.

[0029] 4. The door adopts a linkage lock with two handles. A door handle is set on the inner side of the upper part of the linkage lock, which is used to open and close the door inside the driver's cab. A door handle is set on the outer side of the lower part of the door lock, which is used to open and close the door outside the driver's cab. Compared with the single lock structure, the inner corridor locomotive can directly open the door on the track surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the vehicle door structure of the present invention;

[0031] Figure 2 This is an exploded schematic diagram of the vehicle door structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the door frame of the present invention;

[0033] Figure 4 It is a partial schematic diagram of the door frame of the present invention;

[0034] Figure 5 This is a schematic diagram of the reinforcement beam after welding of the present invention;

[0035] Figure 6 This is a schematic diagram of the reinforcement beam of the present invention;

[0036] Figure 7 This is a schematic diagram of the installation of the movable beam of the present invention;

[0037] Figure 8 This is a schematic diagram of the movable beam of the present invention;

[0038] Figure 9 for Figure 1 AA cross-sectional view.

[0039] In the figure, 1, door frame; 2, upper hinge mounting seat; 3, middle hinge mounting seat; 4, lower hinge mounting seat; 5, side window mounting seat 1; 6, side window mounting seat 2; 7, side window mounting seat 3; 8, movable beam mounting seat 1; 9, movable beam mounting seat 2; 10, movable beam mounting seat 3; 11, reinforcement beam; 11-1, reinforcement rib 1; 11-2, reinforcement rib 2; 11-3, reinforcement rib 3; 11-4, reinforcement rib 4; 11a, reinforcement beam door panel mounting hole; 11b, reinforcement beam drain pipe mounting hole; 12, drainage Tube; 13. Sealing strip; 13-1. Sealant; 14. Movable beam; 14-1. Movable beam mounting hole; 14-2. Inner door panel mounting hole; 14a. Movable beam flange one; 14b. Movable beam flange two; 14c. Movable beam flange three; 14d. Movable beam flange four; 14e. Movable beam door lock mounting hole one; 14f. Movable beam door lock mounting hole two; 15. Inner door panel; 16. Side window decorative frame; 16-1. Decorative strip; 17. Inspection panel; 18. Hinge; 19. Interlocking lock; 20. Movable side window. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] This embodiment provides a vehicle door that can be installed with movable side windows, such as Figures 1 to 3 As shown, it includes a door frame 1, an inner door panel 15, a door lock, a movable side window 20, a reinforcing beam 11, and a movable beam 14. The door frame 1 includes an outer door panel and a vertical plate connected to the outer door panel. The upper portion of the outer door panel is provided with a through hole that matches the movable side window 20. The lower portion of the outer door panel is provided with an inwardly recessed platform. The door handle of the door lock is set within the platform, and the rotation trajectory of the door handle of the door lock is within the platform. The reinforcing beam 11 is set at the lower portion of the door frame 1 and is welded to the door frame 1. The thickness of the reinforcing beam 11 is the distance between the inner and outer door panels. It is Z-shaped along the width direction, spanning the entire width of the door frame 1, and has a variable cross-section in the platform area. The movable beam 14 is set in the middle of the door frame 1 and is connected to the door frame 1 via a movable beam mounting seat. The movable beam 14 is located between the movable side window 20 and the inner door panel 15 along the thickness direction of the door. It is L-shaped and has a flange around the periphery. The movable side window 20 is connected to the door frame 1 through the side window mounting seat. The movable side window 20 can provide a minimum of 2000cm 2 The window size should be at least 400mm.

[0042] In this embodiment, the window size of the movable side window 20 used is specifically 450 mm×450 mm.

[0043] In this embodiment, if Figure 5 and Figure 6 As shown, the reinforcing beam 11 is welded together by reinforcing rib 1 11-1, reinforcing rib 2 11-2, reinforcing rib 3 11-3 and reinforcing rib 4 11-4. The reinforcing rib 1 11-1 is an L-shaped beam, and the reinforcing rib 2 11-2, reinforcing rib 3 11-3 and reinforcing rib 4 11-4 are all U-shaped beams. The reinforcing beam 11 is provided with a reinforcing beam door panel mounting hole 11a and a reinforcing beam drain pipe mounting hole 11b.

[0044] In this embodiment, the side window mounting brackets include side window mounting bracket 1 (5) positioned on the upper side elevation of the door frame 1 upright, and side window mounting brackets 2 (6) and 3 (7) positioned on the left and right side elevations of the door frame 1 upright. Each of side window mounting brackets 1 (5), 2 (6), and 3 (7) is welded together using L-shaped beams and threaded blocks. The spacing between the side window mounting brackets is larger than the size of the movable side window 20, and the mounting brackets are secured to be coplanar using tooling. Side window mounting brackets 1 (5), 2 (6), and 3 (7) can also be connected to form a single mounting bracket.

[0045] In this embodiment, if Figure 3 As shown, the movable beam mounting seat includes a movable beam mounting seat 1 8, a movable beam mounting seat 2 9, and a movable beam mounting seat 3 10. The movable beam mounting seat 1 8 is arranged on the vertical plate on the hinge side of the middle part of the door frame 1, and the movable beam mounting seat 2 9 and the movable beam mounting seat 3 10 are arranged on the vertical plate on the door lock side of the middle part of the door frame 1. The movable beam mounting seat 1 8, the movable beam mounting seat 2 9, and the movable beam mounting seat 3 10 are all welded by L-shaped beams and threaded blocks, and the width dimension between the movable beam mounting seat 1 8 and the movable beam mounting seat 2 9 and the movable beam mounting seat 3 10 is greater than the width dimension of the movable side window 20 to facilitate the installation of the movable side window 20.

[0046] In this embodiment, if Figure 7 and Figure 8 As shown, the movable beam 14 is located between the movable side window 20 and the inner door panel 15. The movable beam 14 is L-shaped and has flanges around its perimeter to increase the rigidity and strength of the vehicle door. The movable beam 14 is provided with a movable beam mounting hole 14-1, an inner door panel mounting hole 14-2, a movable beam flange 1 14a, a movable beam flange 2 14b, a movable beam flange 3 14c, a movable beam flange 4 14d, a movable beam door lock mounting hole 1 14e, and a movable beam door lock mounting hole 2 14f.

[0047] In this embodiment, the door lock is a linkage lock 19, which includes a lock body, an upper door handle and a lower door handle. The lock body is fixed to the door frame 1 by screws. The upper door handle is arranged on the inner side of the upper part of the linkage lock 19 and is used to open and close the door inside the driver's cab; the lower door handle is arranged on the outer side of the lower part of the linkage lock 19 and is used to open and close the door outside the driver's cab, so that the movable side window 20 does not interfere with the linkage lock 19, and each has its own operating space.

[0048] In this embodiment, the movable side window 20 and the door frame 1 are sealed by a sealing strip 13 and a sealant 13-1; a drain pipe 12 is welded to the door frame 1, and the drain pipe of the movable side window 20 is connected to the drain pipe 12 of the door frame 1 to ensure the watertightness of the door frame 1 when the movable side window 20 is opened.

[0049] In this embodiment, the vehicle door further includes a side window decorative frame 16, an inspection panel 17, and a hinge 18. The side window decorative frame 16 and the inspection panel 17 are fixedly connected to the inner door panel 15, and the hinge 18 is fixedly connected to the vehicle door frame 1 through a hinge mounting seat.

[0050] In this embodiment, the hinge mounting seat includes an upper hinge mounting seat 2, a middle hinge mounting seat 3, and a lower hinge mounting seat 4. The upper hinge mounting seat 2, the middle hinge mounting seat 3, and the lower hinge mounting seat 4 are respectively arranged at the upper, middle, and lower positions of the hinge side vertical plate of the door frame 1, and are all welded by a U-shaped beam with a trapezoidal cross-section and a threaded block. The upper hinge mounting seat 2 and the middle hinge mounting seat 3 are in the same area as the movable side window 20, and a notch is locally provided at the rib plate, such as Figure 4 As shown, the installation of the movable side window 20 is avoided from being affected.

[0051] In this embodiment, an inspection port is provided in the middle of the inner door panel 15 for inspection and maintenance of the movable side window 20, and a mounting seat for installing the inspection panel 17 is provided on the back of the inspection port. The inner door panel 15 has gaps at corresponding positions of the movable side window, hinge, door lock, etc. to avoid interference during installation.

[0052] In this embodiment, if Figure 9 As shown, the side window decorative frame 16 has an L-shaped cross section and is fixed to the inner door panel 15 by fasteners. A decorative strip 16 - 1 is installed between the side window decorative frame 16 and the movable side window 20 to shield the internal structure of the movable side window.

[0053] This embodiment provides a method for assembling a vehicle door with movable side windows. The specific assembly steps are as follows:

[0054] S1. Weld the reinforcing beam, the side window mounting seat, the hinge mounting seat, the movable beam mounting seat and the drain pipe 12 into the door frame 1.

[0055] like Figure 3 As shown, first weld the upper hinge mounting seat 2, the middle hinge mounting seat 3, the lower hinge mounting seat 4, the side window mounting seat 1 5, the side window mounting seat 2 6, the side window mounting seat 3 7, the movable beam mounting seat 1 8, the movable beam mounting seat 2 9, the movable beam mounting seat 3 10, the reinforcing beam 11, and the drain pipe 12 together with the door frame 1.

[0056] like Figure 5 and Figure 6 As shown, the reinforcing beam 11 is welded together by reinforcing rib 1 11 - 1 , reinforcing rib 2 11 - 2 , reinforcing rib 3 11 - 3 and reinforcing rib 4 11 - 4 . The reinforcing beam 11 is provided with a door panel mounting hole 11 a and a drain pipe mounting hole 11 b .

[0057] S2. Connect the movable side window 20 to the side window mounting seat via fasteners, and connect the drain pipe of the movable side window 20 to the drain pipe 12 on the door frame 1.

[0058] The movable side window 20 is fixed to the side window mounting bracket 1 5, the side window mounting bracket 2 6, and the side window mounting bracket 3 7 with screws, and the drainage hose of the movable side window 20 is connected to the drainage pipe 12 on the door frame 1. The movable side window 20 and the door frame 1 are sealed with a sealing strip 13 and a sealant 13-1.

[0059] S3. Fix the lock body of the interlock 19 to the door frame 1 through fasteners.

[0060] The lock body of the interlock 19 is fixed to the door frame 1 by screws.

[0061] S4. Fix the movable beam 14 on the movable beam mounting seat by fasteners.

[0062] Fix the movable beam 14 on the movable beam mounting seat 1 8, movable beam mounting seat 2 9, and movable beam mounting seat 3 10 by screws. Figure 7 shown.

[0063] S5. Fix the inner door panel 15 to the door frame 1, the reinforcing beam 11 and the movable beam 14 by means of fasteners.

[0064] The inner door panel 15 is fixed to the door frame 1 , the reinforcing beam 11 and the movable beam 14 by screws.

[0065] S6. Fix the side window inspection panel 17 and the side window decorative frame 16 to the inner door panel 15 by fasteners.

[0066] The inspection panel 17 and the side window decorative frame 16 are fixed to the inner door panel 15 by screws. The side window decorative frame 16 and the movable side window 20 are connected by a decorative strip 16-1. Figure 9 shown.

[0067] S7. Fix the hinge 18 to the door frame 1 via fasteners.

[0068] The hinge 18 is fixed to the door frame 1 by screws.

[0069] S8. Connect the door handle of the interlock 19 to the lock body of the interlock 19 and fix them on the vehicle door through fasteners.

[0070] The door handle of the interlock 19 is connected to the lock body of the interlock 19 and fixed to the vehicle door by screws.

[0071] As described above, the vehicle door with movable side windows disclosed in the present invention meets the escape route requirements of the TSI 1302 specification and the strength requirements of the TB / T 3266 standard, while reducing the air resistance of the vehicle during operation.

[0072] The contents described in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent modifications to the embodiments made by those skilled in the art fall within the scope defined by the claims attached to the present invention.

Claims

1. A rail vehicle locomotive door capable of being installed with a movable side window, comprising a door frame (1), an inner door panel (15), a door lock, and a movable side window (20), characterized in that: The vehicle door frame (1) further comprises a reinforcing beam (11) and a movable beam (14), wherein the vehicle door frame (1) comprises an outer door panel and a vertical plate connected to the periphery of the outer door panel, wherein the upper portion of the outer door panel is provided with a through hole matching the movable side window (20), and the lower portion of the outer door panel is provided with an inwardly recessed sink, wherein the door handle of the door lock is arranged in the sink, and the rotation trajectory of the door handle of the door lock is in the sink; the reinforcing beam (11) is arranged at the lower portion of the vehicle door frame (1) and is welded to the vehicle door frame (1), and the thickness dimension of the reinforcing beam (11) is the distance between the inner and outer door panels. The movable beam (14) is arranged in the middle of the door frame (1) and is connected to the door frame (1) through a movable beam mounting seat. The movable beam (14) is located between the movable side window (20) and the inner door panel (15) along the thickness direction of the door, is L-shaped and has a flange around it. The movable side window (20) is connected to the door frame (1) through a side window mounting seat. The movable side window (20) can provide a minimum of 2000 cm 2 The window size should be at least 400mm.

2. A rail vehicle door capable of being installed with movable side windows according to claim 1, characterized in that: The reinforcing beam (11) is formed by welding reinforcing rib one (11-1), reinforcing rib two (11-2), reinforcing rib three (11-3), and reinforcing rib four (11-4); the reinforcing rib one (11-1) is an L-shaped beam; the reinforcing rib two (11-2), reinforcing rib three (11-3), and reinforcing rib four (11-4) are all U-shaped beams; and the reinforcing beam (11) is provided with a reinforcing beam door panel mounting hole (11a) and a reinforcing beam drainage pipe mounting hole (11b).

3. The rail vehicle door capable of being installed with movable side windows according to claim 1, characterized in that: The side window mounting seat comprises a side window mounting seat 1 (5) arranged on the upper side elevation of the vertical plate of the vehicle door frame (1), a side window mounting seat 2 (6) and a side window mounting seat 3 (7) respectively arranged on the left and right side elevations of the vertical plate of the vehicle door frame (1), wherein the side window mounting seat 1 (5), the side window mounting seat 2 (6) and the side window mounting seat 3 (7) are all welded by L-shaped beams and threaded blocks, and the space between each side window mounting seat is larger than the size of the movable side window (20).

4. The rail vehicle door capable of being installed with movable side windows according to claim 1, characterized in that: The movable beam mounting seat comprises a movable beam mounting seat 1 (8), a movable beam mounting seat 2 (9), and a movable beam mounting seat 3 (10). The movable beam mounting seat 1 (8) is arranged on a vertical plate on the hinge side of the middle part of the vehicle door frame (1), and the movable beam mounting seat 2 (9) and the movable beam mounting seat 3 (10) are arranged on a vertical plate on the door lock side of the middle part of the vehicle door frame (1). The movable beam mounting seat 1 (8), the movable beam mounting seat 2 (9), and the movable beam mounting seat 3 (10) are all welded by L-shaped beams and threaded blocks, and the width dimension between the movable beam mounting seat 1 (8) and the movable beam mounting seat 2 (9) and the movable beam mounting seat 3 (10) is greater than the width dimension of the movable side window (20).

5. The rail vehicle door capable of being installed with movable side windows according to claim 1, characterized in that: The door lock is a linkage lock (19), which includes a lock body, an upper door handle and a lower door handle. The lock body is fixed to the vehicle door frame (1) by screws, the upper door handle is arranged on the inner side of the upper part of the linkage lock (19), and the lower door handle is arranged on the outer side of the lower part of the linkage lock (19).

6. The rail vehicle door capable of being installed with movable side windows according to claim 1, characterized in that: The movable side window (20) and the vehicle door frame (1) are sealed by a sealing strip (13) and a sealant (13-1); a drainage pipe (12) is welded to the vehicle door frame (1), and the drainage pipe of the movable side window (20) is connected to the drainage pipe (12) of the vehicle door frame (1).

7. The rail vehicle door capable of being installed with movable side windows according to claim 1, characterized in that: It also includes a side window decorative frame (16), an inspection plate (17), and a hinge (18). The side window decorative frame (16) and the inspection plate (17) are fixedly connected to the inner door panel (15), and the hinge (18) is fixedly connected to the vehicle door frame (1) via a hinge mounting seat.

8. The rail vehicle door capable of being installed with movable side windows according to claim 7, characterized in that: The hinge mounting seat comprises an upper hinge mounting seat (2), a middle hinge mounting seat (3), and a lower hinge mounting seat (4). The upper hinge mounting seat (2), the middle hinge mounting seat (3), and the lower hinge mounting seat (4) are respectively arranged at the upper, middle, and lower positions of the hinge side vertical plate of the vehicle door frame (1), and are all welded by a U-shaped beam with a trapezoidal cross-section and a threaded block. The upper hinge mounting seat (2) and the middle hinge mounting seat (3) are in the same area as the movable side window (20), and a notch is locally provided at the rib plate thereof to avoid affecting the installation of the movable side window (20).

9. A method for assembling a rail vehicle door capable of being installed with movable side windows according to any one of claims 1 to 8, characterized in that: The assembly steps include: S1, welding the reinforcement beam, the side window mounting seat, the hinge mounting seat, the movable beam mounting seat and the drain pipe (12) into the door frame (1); S2, connecting the movable side window (20) to the side window mounting seat through fasteners, and connecting the drainage pipe of the movable side window (20) to the drainage pipe (12) on the door frame (1); S3, fixing the lock body of the linkage lock (19) to the door frame (1) via fasteners; S4, fixing the movable beam (14) to the movable beam mounting seat by means of fasteners; S5, fixing the inner door panel (15) to the door frame (1), the reinforcing beam (11) and the movable beam (14) by means of fasteners; S6, fixing the side window inspection panel (17) and the side window decorative frame (16) to the inner door panel (15) by fasteners; S7, fixing the hinge (18) to the door frame (1) via fasteners; S8. Fix the door handle of the interlock (19) to the vehicle door through fasteners.

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