An auxiliary air duct door opening and closing assembly for a railway vehicle

Abstract

The utility model relates to vehicle accessory technical field, concretely is a kind of auxiliary air duct door assembly for railway vehicle, including door panel assembly, folder assembly and second door panel, and door panel assembly is installed in the inside of auxiliary air duct by folder assembly;Folder assembly includes folder and backing plate, and backing plate is installed between folder and auxiliary air duct by fastener;Second door panel is installed on door panel assembly by fastener.When door panel assembly and second door panel are closed, in the auxiliary air duct door assembly for railway vehicle, by the cooperation of door panel assembly and second door panel, the gap between folder assembly and auxiliary air duct can be covered by second door panel when closing, effectively block the path of outside ice and snow invading auxiliary air duct, guarantee the ventilation and heat dissipation efficiency of air supply unit cooler, avoid the equipment failure caused by ice and snow blockage, improve the security and stability of railway vehicle operation.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, specifically to an auxiliary air duct switch assembly for rail vehicles. Background Technology

[0002] Rail vehicles, as an important tool of modern transportation, are characterized by high speed, safety, and comfort, and have become one of the main modes of daily travel and freight transport. In the air supply system of rail vehicles, the air supply unit and its associated air ducts are usually arranged in the equipment compartment under the vehicle. The air outlet at the end of the air duct is connected to the outside, which is used to realize the ventilation and heat dissipation of the air supply unit's cooler and ensure the safe and efficient operation of the air supply unit.

[0003] However, in the low-temperature environment of winter, during the operation of rail vehicles, ice and snow from the outside can easily accumulate or even freeze at the air outlet of the auxiliary air duct, thereby blocking the air duct and causing poor ventilation of the air supply unit cooler, which seriously affects the normal operation of the air supply unit and may even cause equipment failure, posing a threat to the safe operation of rail vehicles.

[0004] To address this issue, existing technologies attempt to install switchable doors at the auxiliary ventilation ducts. These doors are closed in winter to cut off the passage between the duct and the outside, preventing ice and snow intrusion. However, existing switchable door structures have several shortcomings: Firstly, some doors use non-metallic sealing materials such as rubber, which are prone to aging and wear over long-term use, affecting sealing performance and increasing maintenance costs and replacement frequency. Secondly, traditional door panel and pad structures, when using simple hinges for opening and closing, often struggle to avoid component interference during operation. Furthermore, even with interference-free operation, excessively large door gaps fail to meet airtightness requirements, hindering effective ice and snow prevention. Additionally, the limited space in the equipment compartment under rail vehicles and the significant external space constraints of the auxiliary ventilation ducts result in deficiencies in space utilization and structural layout, making it difficult to achieve a balance between good sealing performance and ease of operation within a confined space. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary air duct opening and closing door assembly for rail vehicles, in order to solve the problem mentioned in the background art that in low-temperature winter environments, ice and snow from the outside can easily accumulate or even freeze at the air outlet of the auxiliary air duct during the operation of rail vehicles, thereby blocking the air duct, causing poor ventilation of the air supply unit cooler, seriously affecting the normal operation of the air supply unit, and may even cause equipment failure, posing a threat to the safe operation of rail vehicles.

[0006] To achieve the above objectives, this utility model provides an auxiliary ventilation duct switch assembly for rail vehicles, including a door panel assembly, a hinge assembly, and a second door panel. The door panel assembly is installed inside the auxiliary ventilation duct via the hinge assembly. The hinge assembly includes a hinge and a pad, and the pad is installed between the hinge and the auxiliary ventilation duct via fasteners. The second door panel is installed on the door panel assembly via fasteners. When the door panel assembly and the second door panel are closed, the second door panel can cover and seal the gap between the hinge assembly and the auxiliary ventilation duct. After closing, the interior of the auxiliary ventilation duct is not affected by external ice and snow, while simultaneously meeting the airtightness and safety requirements of the vehicle's interior and exterior.

[0007] This design defines the core components of the auxiliary ventilation duct door assembly for rail vehicles, including the door panel assembly, the hinge assembly, the connection and installation position of the second door panel, and the sealing function of the second door panel when closed. The door panel assembly is installed inside the auxiliary ventilation duct, and the hinge assembly enables the door panel to flip, while the second door panel covers and seals the gap between the hinge assembly and the ventilation duct.

[0008] Preferably, the door panel assembly consists of a first door panel, a door handle, and welding studs. The door handle and welding studs are welded to the first door panel. The upper blade of the hinge is connected to the first door panel via welding studs, and the lower blade is connected and fixed to the inner wall of the auxiliary air duct via fasteners.

[0009] This design further refines the composition of the door panel assembly, including the connection methods of the first door panel, door handle, and welding studs, as well as the connection structure between the hinge and the first door panel and the auxiliary air duct. Welding studs are used to connect the upper blades of the hinge to the first door panel, while fasteners are used to fix the lower blades of the hinge to the inner wall of the air duct.

[0010] Preferably, the door panel assembly is fitted with baffles on both sides, which are attached to the inner walls of the auxiliary air duct on both sides. When the door panel assembly is flipped to block or open the auxiliary air duct, it is locked and fixed by a latch.

[0011] This design specifies the installation method of the side panels of the door panel assembly and their fit with the inner wall of the auxiliary air duct. It also clarifies that the door panel assembly is locked in place when flipped over using a latch. The side panels fit against the inner wall of the air duct, and the latch provides locking force.

[0012] Preferably, the door panel assembly, the hinge assembly, and the second door panel are all made of stainless steel.

[0013] This setting limits the material of the door panel assembly, hinge assembly, and second door panel to stainless steel.

[0014] Preferably, the second door panel has a notch near the upper blade of the hinge to accommodate the installation position of the hinge and the door panel assembly.

[0015] This setting defines the location and function of the notch on the second door panel, which is used to accommodate the installation position of the hinge and the door panel assembly.

[0016] Preferably, the lower side of the second door panel is provided with a chamfered structure, the auxiliary air duct is a channel structure that runs vertically through the room, and an installation port is provided on one side. The chamfered structure is used to avoid interference between the second door panel and the installation port during rotation, and the maximum gap between the chamfered structure and the inner wall of the auxiliary air duct is less than 1mm.

[0017] This setting limits the function and clearance requirements of the chamfered structure on the lower side of the second door panel, in order to avoid interference with the installation port of the auxiliary air duct, and the maximum clearance is less than 1mm.

[0018] Preferably, a sealing gasket is provided between the pin and the outer wall of the auxiliary air duct.

[0019] This setting requires a sealing gasket to be installed between the latch and the outer wall of the auxiliary air duct.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] In the auxiliary air duct opening and closing assembly of this rail vehicle, through the cooperation of the door panel assembly and the second door panel, when closed, the second door panel can cover the gap between the hinge assembly and the auxiliary air duct, and the maximum gap is less than 1mm. This effectively blocks the path of external ice and snow to enter the auxiliary air duct, ensures the ventilation and heat dissipation efficiency of the air supply unit cooler, avoids equipment failure caused by ice and snow blockage, and improves the safety and stability of rail vehicle operation.

[0022] The assembly is installed inside the auxiliary air duct, making full use of the internal space of the auxiliary air duct and not constrained by the external space of the air duct. It achieves a reasonable layout in the limited space of the equipment compartment under the rail vehicle, which not only meets the requirements of sealing and switching functions, but also does not interfere with the installation and operation of other equipment, thus improving the space utilization rate of the equipment compartment under the vehicle.

[0023] The baffles on both sides of the door panel assembly fit against the inner walls of the auxiliary air ducts and are locked in place by pins, ensuring a stable and reliable opening and closing process. The notch and chamfer design of the second door panel effectively avoids interference with the hinges and auxiliary air duct installation openings during opening and closing, ensuring smooth door operation and reducing the risk of malfunctions during operation.

[0024] The overall structural design achieves sealing through the precise matching of metal components, eliminating the need to rely on easily aging non-metallic sealing materials such as rubber. While meeting the airtightness requirements inside and outside the vehicle, it solves the lifespan and maintenance problems of traditional non-metallic sealing materials, ensuring the stable airtightness of the door opening and closing assembly throughout its entire life cycle. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model when it is turned on in summer;

[0026] Figure 2 This is a schematic diagram of the structure of this utility model when it is closed in winter;

[0027] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0028] Figure 4 This is a structural schematic diagram of the door panel assembly of this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the second door panel in this utility model;

[0030] Figure 6 This is a partial structural diagram of the present invention when it is turned on in summer;

[0031] Figure 7 This is a partial structural diagram of the present invention when closed in winter;

[0032] The meanings of the labels in the diagram are as follows:

[0033] 1. Door panel assembly; 11. First door panel; 12. Door handle; 13. Welded stud; 14. Baffle; 15. Bolt; 2. Hinge assembly; 21. Hinge; 22. Pad; 3. Auxiliary air duct; 31. Mounting port; 4. Second door panel; 41. Notch; 42. Chamfered structure. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] This utility model provides an auxiliary ventilation duct door opening and closing assembly for rail vehicles, such as... Figures 1-7 As shown, the system includes a door panel assembly 1, a hinge assembly 2, and a second door panel 4. The door panel assembly 1 is installed inside the auxiliary air duct 3 via the hinge assembly 2. The hinge assembly 2 includes a hinge 21 and a pad 22. The pad 22 is installed between the hinge 21 and the auxiliary air duct 3 via fasteners. The second door panel 4 is installed on the door panel assembly 1 via fasteners. When the door panel assembly 1 and the second door panel 4 are closed, the second door panel 4 can cover and seal the gap between the hinge assembly 2 and the auxiliary air duct 3. After closing, the interior of the auxiliary air duct 3 is not affected by external ice and snow, thus meeting the airtightness and safety requirements of the vehicle's interior and exterior.

[0036] The core components of the auxiliary ventilation duct door assembly for rail vehicles are defined, including the connection relationship and installation position of the door panel assembly 1, the hinge assembly 2, and the sealing function of the second door panel 4 when closed. By installing the door panel assembly 1 inside the auxiliary ventilation duct 3, the hinge assembly 2 enables the door panel to flip, while the second door panel 4 covers and seals the gap between the hinge assembly and the ventilation duct. The basic structural framework of the assembly is clearly defined, ensuring that the interior of the auxiliary ventilation duct 3 is unaffected by external ice and snow when closed, meeting the airtightness and safety requirements of the vehicle's interior and exterior, and comprehensively solving the problem of ice and snow blockage in the auxiliary ventilation duct during winter.

[0037] In this embodiment, the door panel assembly 1 is divided into a first door panel 11, a door handle 12, and a welding stud 13. The door handle 12 and the welding stud 13 are welded to the first door panel 11. The upper blade of the hinge 21 is connected to the first door panel 11 through the welding stud 13, and the lower blade is connected and fixed to the inner wall of the auxiliary air duct 3 through fasteners.

[0038] The composition of the door panel assembly 1 is further refined, including the connection method of the first door panel 11, door handle 12, and welding studs 13, as well as the connection structure between the hinge 21 and the first door panel 11 and the auxiliary air duct 3. The welding studs 13 connect the upper blade of the hinge to the first door panel, while fasteners secure the lower blade of the hinge to the inner wall of the air duct. This makes the structure of the door panel assembly clearer, ensures the stability of the connection between the door panel assembly and the hinge, provides support for the door panel's flipping operation and the overall structural stability, and improves the mechanical reliability of the assembly.

[0039] Specifically, baffles 14 are installed on both sides of the door panel assembly 1. The baffles 14 are attached to the inner walls of both sides of the auxiliary air duct 3. When the door panel assembly 1 is flipped to block or open the auxiliary air duct 3, it is locked and fixed by the latch 15.

[0040] The installation method of the baffles 14 on both sides of the door panel assembly 1 and their fit with the inner wall of the auxiliary air duct 3 are specified. It is also clarified that the locking and fixing of the door panel assembly during flipping is achieved through the pins 15. The baffles 14 fit against the inner wall of the air duct, and the pins 15 provide locking force. This enhances the stability of the door panel assembly in both closed and open states, prevents the door panel from loosening during vehicle operation, and further improves the reliability of the seal and the safety of operation.

[0041] Furthermore, the door panel assembly 1, the hinge assembly 2, and the second door panel 4 are all made of stainless steel.

[0042] The door panel assembly 1, the hinge assembly 2, and the second door panel 4 are all made of stainless steel. Stainless steel is corrosion-resistant and wear-resistant, enabling the door assembly to operate stably for a long time in the complex operating environment of rail vehicles, significantly reducing maintenance costs and replacement frequency, and extending the service life of the assembly.

[0043] Furthermore, the second door panel 4 has a notch 41 near the upper blade of the hinge 21 to accommodate the installation position of the hinge 21 and the door panel assembly 1.

[0044] The notch 41 on the second door panel 4 is positioned and serves to accommodate the installation position of the hinge 21 and the door panel assembly 1. This prevents the second door panel 4 from interfering with the hinge 21 during the flipping process, ensuring smooth door panel flipping operation and preventing structural damage or sealing failure due to interference.

[0045] Furthermore, the lower side of the second door panel 4 is provided with a chamfered structure 42, the auxiliary air duct 3 is a channel structure that runs vertically through the room, and an installation port 31 is provided on one side. The chamfered structure 42 is used to avoid interference between the second door panel 4 and the installation port 31 during rotation. The maximum gap between the chamfered structure 42 and the inner wall of the auxiliary air duct 3 is less than 1mm.

[0046] The function and clearance requirements of the chamfered structure 42 on the lower side of the second door panel 4 are defined to avoid interference with the mounting opening 31 of the auxiliary air duct 3, and the maximum clearance is less than 1mm. This ensures that the second door panel 4 will not collide with the mounting opening 31 during rotation, while strictly controlling the clearance further improves the sealing performance and ensures airtightness inside and outside the vehicle.

[0047] Furthermore, a sealing gasket is provided between the pin 15 and the outer wall of the auxiliary air duct 3.

[0048] A sealing gasket is installed between the limiting pin 15 and the outer wall of the auxiliary air duct 3. The sealing gasket enhances the sealing performance at the connection between the pin 15 and the outer wall of the air duct, preventing external ice, snow, or dust from entering through the pin, further optimizing the overall sealing effect and improving the airtightness of the assembly.

[0049] The following are the steps for using the auxiliary ventilation duct door opening and closing assembly for rail vehicles of this utility model:

[0050] 1. Closing the sealing process (winter anti-icing and snow protection scenario)

[0051] Operation trigger: The operator flips the door panel assembly 1 inward toward the auxiliary air duct 3 using the door handle 12 of the door panel assembly 1. The hinge 21 serves as the rotation axis, causing the door panel assembly 1 to rotate around the hinge axis.

[0052] Guiding and Avoidance: During the flipping process, the chamfered structure 42 of the second door panel 4 slides along the edge of the air duct installation port 31, and the notch 41 simultaneously avoids the upper blade of the folding 21 to avoid interference with the folding assembly 2 or the air duct wall; the baffles 14 on both sides of the door panel assembly 1 always fit against the inner wall of the air duct, playing a guiding and pre-positioning role.

[0053] Locking and sealing: When the door panel assembly 1 is flipped to completely block the auxiliary air duct 3, the first door panel 11 fits against the end face of the air duct, and the second door panel 4 just covers the connection gap between the hinge assembly 2 and the air duct. At this time, the pin 15 is inserted into the corresponding pin hole of the auxiliary air duct 3, and the position of the door panel assembly 1 is fixed by the locking force of the pin. The sealing gasket at the pin 15 is deformed by pressure, sealing the gap between the pin and the outer wall of the air duct, and finally forming a full-dimensional seal of "main channel + gap + locking point". The interior of the auxiliary air duct 3 is completely isolated from the outside world, and ice and snow cannot penetrate.

[0054] 2. Maintain the seal during operation (during winter).

[0055] During the operation of the rail vehicle, the door panel assembly 1 is kept closed by the locking force of the latch 15. The rigid structure of the all-stainless steel components resists vehicle vibration and airflow impact, preventing the door panel from loosening.

[0056] The fit between the baffle 14 and the inner wall of the air duct, and the coverage of the gap between the second door panel 4 and the hinge assembly 2 are maintained. The sealing gasket is always under pressure and sealed, ensuring that the air tightness meets the standard throughout the process. The air supply unit cooler is not affected by ice and snow and operates normally.

[0057] 3. Ventilation process (non-winter ventilation scenario)

[0058] Unlocking operation: The operator pulls out the latch 15 to release the locking constraint of the door panel assembly 1;

[0059] Smooth opening: Hold the door handle 12 and flip the door panel assembly 1 outward towards the auxiliary air duct 3. The hinge 21 drives the door panel assembly 1 to rotate around the axis. The notch 41 and the chamfer structure 42 of the second door panel 4 simultaneously avoid the hinge 21 and the air duct installation port 31. The pad 22 prevents the door panel from rubbing against the inner wall of the air duct, and there is no interference throughout the process.

[0060] Positioning maintenance: When the door panel assembly 1 is flipped to the fully open position (parallel or perpendicular to the air duct channel, depending on the actual installation angle), insert the pin 15 again to lock it, fix the door panel in the open state, and the auxiliary air duct 3 resumes vertical connection. The air supply unit cooler is connected to the outside through the air duct to achieve ventilation and heat dissipation.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sliding door assembly for an auxiliary ventilation duct of a rail vehicle, characterized in that: The system includes a door panel assembly (1), a hinge assembly (2), and a second door panel (4). The door panel assembly (1) is installed inside the auxiliary air duct (3) via the hinge assembly (2). The hinge assembly (2) includes a hinge (21) and a pad (22). The pad (22) is installed between the hinge (21) and the auxiliary air duct (3) via fasteners. The second door panel (4) is installed on the door panel assembly (1) via fasteners. When the door panel assembly (1) and the second door panel (4) are closed, the second door panel (4) can cover and seal the gap between the hinge assembly (2) and the auxiliary air duct (3). After closing, the interior of the auxiliary air duct (3) is not affected by external ice and snow, and at the same time meets the airtightness and safety requirements of the vehicle interior and exterior.

2. The auxiliary ventilation duct switch assembly for rail vehicles according to claim 1, characterized in that: The door panel assembly (1) is divided into a first door panel (11), a door handle (12) and a welding stud (13). The door handle (12) and the welding stud (13) are welded to the first door panel (11). The upper blade of the hinge (21) is connected to the first door panel (11) through the welding stud (13), and the lower blade is connected and fixed to the inner wall of the auxiliary air duct (3) through fasteners.

3. The auxiliary ventilation duct switch assembly for rail vehicles according to claim 1, characterized in that: The door panel assembly (1) is fitted with baffles (14) on both sides. The baffles (14) are attached to the inner walls of the auxiliary air duct (3) on both sides. When the door panel assembly (1) flips to block or open the auxiliary air duct (3), it is locked and fixed by a pin (15).

4. The auxiliary ventilation duct switch assembly for rail vehicles according to claim 1, characterized in that: The door panel assembly (1), the hinge assembly (2), and the second door panel (4) are all made of stainless steel.

5. The auxiliary ventilation duct switch assembly for rail vehicles according to claim 1, characterized in that: The second door panel (4) has a notch (41) near the upper blade of the hinge (21) to accommodate the installation position of the hinge (21) and the door panel assembly (1).

6. The auxiliary ventilation duct switch assembly for rail vehicles according to claim 1, characterized in that: The lower side of the second door panel (4) is provided with a chamfered structure (42). The auxiliary air duct (3) is a channel structure that runs vertically through the room, and an installation port (31) is provided on one side. The chamfered structure (42) is used to avoid interference between the second door panel (4) and the installation port (31) during rotation. The maximum gap between the chamfered structure (42) and the inner wall of the auxiliary air duct (3) is less than 1 mm.

7. The auxiliary ventilation duct switch assembly for rail vehicles according to claim 3, characterized in that: A sealing gasket is provided between the pin (15) and the outer wall of the auxiliary air duct (3).

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