Fireproof double door for high-speed train

Abstract

The utility model provides a fire-resistant double door for a high-speed train, and relates to the field of fire-resistant door structures. A fire-resistant double door for a high-speed train is in sliding connection with a sliding rail and comprises a door body assembly provided with a first door body and a second door body which are movably connected; a bent structure is formed at the joint of the door body assembly and the vehicle body; the fireproof assembly comprises a plurality of fireproof expansion rubber strips; a plurality of fireproof expansion rubber strips are arranged at the joint of the first door body and the second door body; a plurality of fireproof expansion rubber strips are arranged at the joint of the door body assembly and a vehicle body; a plurality of fireproof expansion rubber strips are arranged at the joint of the door body assembly and the sliding rail. When a fire occurs, the multiple fireproof expansion rubber strips can be heated to expand, so that the gap of the door body assembly is completely blocked, the fire-resistant time is effectively prolonged, and the fire-resistant requirement of the high-speed train is met.

Description

Technical Field

[0001] The present application relates to the field of fire-resistant door structures, and in particular to a fire-resistant double door for high-speed trains. Background Art

[0002] Fire-resistant electric double doors are installed between two train carriages. They must not only meet the train's internal environmental requirements for air permeability and easy operation, but also possess excellent fire resistance and thermal insulation. In the event of a fire inside a carriage, they must form an effective fire barrier, preventing a fire in one carriage from spreading to adjacent carriages. However, existing double doors have a short fire resistance of only 15 minutes, failing to meet the 30-minute fire resistance requirement for next-generation high-speed trains. Utility Model Content

[0003] In view of this, the purpose of the present application is to provide a fire-resistant double door for high-speed trains to solve the problem that the existing double door has a short fire resistance time and cannot meet the fire resistance requirements of high-speed trains.

[0004] In accordance with the above objectives, the present invention provides a fire-resistant double door for high-speed trains, which is slidably connected to a slide rail. The fire-resistant double door for high-speed trains includes:

[0005] The door assembly is provided with a first door body and a second door body that are movably connected; the connection between the door assembly and the vehicle body is formed into a bent structure;

[0006] a fire-resistant assembly comprising a plurality of fire-resistant intumescent strips;

[0007] A plurality of fireproof expansion strips are provided at the connection between the first door body and the second door body; a plurality of fireproof expansion strips are provided at the connection between the door body assembly and the vehicle body; and a plurality of fireproof expansion strips are provided at the connection between the door body assembly and the slide rail.

[0008] Preferably, the extension direction of the slide rail is formed as a first direction, and along the first direction, an accommodating portion is formed at the end of the first door body close to the second door body, and the accommodating portion runs through the top and bottom ends of the first door body in the height direction.

[0009] Preferably, along the first direction, a convex portion is formed on the end of the second door body close to the first door body; when the door body assembly is in a closed state, the convex portion extends into the accommodating portion accordingly.

[0010] Preferably, the accommodating portion is formed as a U-shaped open structure opening toward the second door body, and both side walls of the open structure are formed with recessed portions; along the first direction, the recessed portion is located at one end away from the opening of the accommodating portion.

[0011] Preferably, the fireproof expansion strip is correspondingly arranged in the recessed portion, and the thickness of the fireproof expansion strip is greater than the recessed depth of the recessed portion.

[0012] Preferably, along the first direction, a first assembly groove is further formed at the end of the first door body close to the second door body, and a second assembly groove is formed at the end of the protrusion away from the second door body, and anti-collision rubber strips are provided in both the first assembly groove and the second assembly groove;

[0013] When the door assembly is in a closed state, the anti-collision rubber strip correspondingly connected to the first assembly groove abuts against the second door body; the anti-collision rubber strip correspondingly connected to the second assembly groove abuts against the bottom of the accommodating portion.

[0014] Preferably, a vehicle body baffle is provided at the connection between the vehicle body and the door assembly; the door assembly further comprises a door baffle formed into a U-shaped structure, and the first door body and the second door body are connected to the vehicle body via the door baffle.

[0015] When the door assembly is in a closed state, the vehicle body baffle extends into the door baffle; when the door assembly is in an open state, the vehicle body baffle moves in a direction away from the door baffle.

[0016] Preferably, the fireproof expansion strip is provided on the side of the vehicle body baffle away from the vehicle body; and the fireproof expansion strip is provided at the bending part of the inner wall of the door body baffle.

[0017] Preferably, a sliding groove corresponding to the sliding rail is formed at the bottom end of the door assembly in the height direction.

[0018] Preferably, the fireproof expansion strips are provided on the inner wall of the slide groove, and the fireproof expansion strips are distributed on both sides of the extension direction of the slide rail.

[0019] According to the utility model, the fire-resistant double-leaf door for high-speed trains is provided with multiple fire-resistant expansion strips at the junction of the first and second door bodies of the door assembly; the junction between the door assembly and the vehicle body is configured as a bent structure, and multiple fire-resistant expansion strips are provided at the bent structure; and multiple fire-resistant expansion strips are provided at the junction between the door assembly and the slide rail. In the event of a fire, the multiple fire-resistant expansion strips expand in response to heat, thereby completely sealing the gaps in the door assembly, thereby achieving the flame-retardant technical effect. This effectively extends the fire resistance time compared to existing double-leaf doors, thus meeting the fire resistance requirements of high-speed trains.

[0020] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of a fire-resistant double door for a high-speed train according to an embodiment of the present utility model;

[0023] Figure 2 1 is a cross-sectional view of a door assembly according to an embodiment of the present invention taken along the AA direction;

[0024] Figure 3 It is a partial cross-sectional view of the door assembly of an embodiment of the present utility model when closed;

[0025] Figure 4 is another partial cross-sectional view of the door assembly of an embodiment of the present invention when closed;

[0026] Figure 5 It is a partial schematic diagram of the door assembly and the slide rail during assembly according to an embodiment of the present invention.

[0027] Icons: 11-first door body; 110-accommodating part; 111-recessed part; 112-first assembly groove; 12-second door body; 120-convex part; 121-second assembly groove; 13-door body baffle; 140-door frame; 141-door panel; 15-slide groove; 21-vehicle body; 22-vehicle body baffle; 31-fireproof expansion strip; 32-anti-collision strip; 4-slide rail. DETAILED DESCRIPTION

[0028] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, except for operations that must occur in a particular order, changes may be made that will be apparent upon understanding the disclosure of this application. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity.

[0029] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0030] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, it may be directly “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on,” “directly connected to,” “directly coupled to,” “directly over,” or “directly covering” another element, there may be no other elements intervening therebetween.

[0031] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0032] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, a first member, component, region, layer, or portion in the examples described herein may also be referred to as a second member, component, region, layer, or portion without departing from the teachings of the examples.

[0033] For ease of description, spatial relational terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element would subsequently be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientations "above" and "below," depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0034] The terms used herein are intended only to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular is intended to include the plural. The terms "comprise," "include," and "have" list the presence of stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0035] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include changes in shapes that occur during manufacturing.

[0036] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0037] The utility model provides a fire-resistant double door (hereinafter referred to as double door) for high-speed trains. Figures 1 to 5 As shown, the double door in this embodiment includes a door assembly and a fire-resistant assembly (i.e., multiple fire-resistant expansion strips 31) disposed at the gap between the door assemblies. In the event of a fire, the fire-resistant assembly expands upon heating to seal the gap between the door assemblies, thereby achieving the technical effect of fire isolation and flame retardancy. The following describes in detail the specific structure and connection relationship of the aforementioned components of the fire-resistant double door for high-speed trains according to the present invention.

[0038] The double doors in this embodiment are slidably arranged at the end of each carriage of the train via a slide rail 4, thereby facilitating the entry and exit of passengers. Figures 1 to 2 As shown, the door assembly includes a first door body 11 and a second door body 12 that are movably connected, that is, the first door body 11 and the second door body 12 are both slidably connected to the slide rail 4, so that when the first door body 11 and the second door body 12 slide in a direction toward each other, the door assembly can be closed; when the first door body 11 and the second door body 12 slide in a direction away from each other, the door assembly can be opened. Specifically, the structures of the first door body 11 and the second door body 12 are similar. Taking the first door body 11 as an example, it includes a door panel 141 and a door frame 140 wrapped around the outer side of the door panel 141. Based on the fire resistance requirements of this double door, the door panel 141 and the door frame 140 are both made of fire-resistant materials. For example, the door panel 141 in this embodiment is made of fire-resistant glass. In this way, while ensuring the fire resistance requirements, it can also ensure the transparency between the two carriages.

[0039] It should be noted that the specific structure and connection method of the door panel 141 and the door frame 140 are all prior art and will not be described in detail. In addition, in order to facilitate a clearer and more accurate description of the various structures described below, the extension direction of the slide rail 4 is assumed to be the first direction (i.e., the direction indicated by the arrow), which is the length direction of the first door body 11 and the second door body 12.

[0040] In this embodiment, if Figures 2 to 3 As shown, along the first direction, a receiving portion 110 is formed at the end of the first door body 11 close to the second door body 12. The receiving portion 110 extends through the top and bottom ends of the first door body 11 in the height direction. Correspondingly, along the first direction, a protrusion 120 is formed at the end of the second door body 12 close to the first door body 11. When the door assembly is in a closed state, the protrusion 120 extends into the receiving portion 110. Furthermore, the receiving portion 110 and the protrusion 120 are respectively formed at the door frames 140 of the first door body 11 and the second door body 12.

[0041] Furthermore, the accommodating portion 110 is formed into a U-shaped open structure that opens toward the second door body 12. A recessed portion 111 is formed on both side walls of the open structure. Along the first direction, the recessed portion 111 is located at the end away from the opening of the accommodating portion 110, thereby forming a stepped inner wall of the accommodating portion 110. The fireproof expansion strip 31 is correspondingly disposed in the recessed portion 111, and the thickness of the fireproof expansion strip 31 is greater than the depth of the recessed portion 111. This facilitates the fireproof expansion strip 31 to seal the gap between the protrusion 120 and the accommodating portion 110 after being heated, thereby sealing the gap between the first door body 11 and the second door body 12, thereby achieving the technical effect of fire prevention.

[0042] In addition, a first assembly groove 112 is formed at the end of the first door body 11 near the second door body 12 along the first direction. The two first assembly grooves 112 are symmetrically distributed on both sides of the accommodating portion 110 along the first direction. A second assembly groove 121 is formed at the end of the protrusion 120 away from the second door body 12. Anti-collision rubber strips 32 are provided in both the first assembly groove 112 and the second assembly groove 121. When the door assembly is in the closed state, the anti-collision rubber strip 32 corresponding to the first assembly groove 112 abuts against the second door body 12; the anti-collision rubber strip 32 corresponding to the second assembly groove 121 abuts against the bottom of the accommodating portion 110, thereby achieving the shock absorption and anti-collision requirements when the first door body 11 and the second door body 12 are closed.

[0043] It should be noted that in this embodiment, both the first assembly groove 112 and the second assembly groove 121 are formed into a T-shaped structure. This can increase the stability of the connection of the anti-collision rubber strip 32 and effectively prevent the anti-collision rubber strip 32 from falling off. The shape and specifications of the first assembly groove 112 and the second assembly groove 121 are not specifically limited, as long as they can achieve the above-mentioned technical effects. In addition, the anti-collision rubber strip 32 can be connected to the first assembly groove 112 and the second assembly groove 121 by interference fit, bonding, or other means, as long as the stability of the connection is guaranteed.

[0044] In this embodiment, if Figure 2 and Figure 4 As shown, the door assembly also includes a door baffle 13 formed into a U-shaped structure, through which the first door 11 and the second door 12 are connected to the vehicle body 21. Furthermore, a vehicle baffle 22 is added at the connection between the vehicle body 21 and the door assembly. When the door assembly is in the closed state, the vehicle baffle 22 extends into the door baffle 13; when the door assembly is in the process of opening, the vehicle baffle 22 moves away from the door baffle 13. A fireproof expansion rubber strip 31 is provided on the side of the vehicle baffle 22 away from the vehicle body 21; the fireproof expansion rubber strip 31 is also provided at the bend of the inner wall of the door baffle 13 (on the side closer to the first door 11 or the second door 12).

[0045] The door baffle 13 and the vehicle body baffle 22 with the above-mentioned bending structure can increase the stability of the connection between the first door body 11 and the second door body 12 and the vehicle body 21, and the structure of the door baffle 13 and the vehicle body baffle 22 can cooperate with the fire-proof expansion strip 31, thereby preventing the spread of fire to the greatest extent.

[0046] In this embodiment, if Figure 5 As shown, a slide groove 15 is formed at the bottom end of the door assembly in the height direction, corresponding to the slide rail 4. Configuring the doors at the ends of the carriages to be slidable is conventional technology, so the specific structure of the slide rail 4 and the slide groove 15 will not be described in detail. The inner wall of the slide groove 15 is provided with the fireproof expansion rubber strips 31, which are distributed on both sides of the slide rail 4 in the direction of extension. These fireproof expansion rubber strips 31 can seal the gap between the door assembly and the slide rail 4 in the event of a fire. Furthermore, a rubber strip is provided on the end surface of the slide groove 15 away from the slide rail 4.

[0047] It should be noted that there are no specific restrictions on the specifications of the fire-resistant expansion strip 31, as long as the above-mentioned technical effects can be achieved. Furthermore, there are no restrictions on the connection method between the fire-resistant expansion strip 31 and the door assembly. For example, a stop structure corresponding to the fire-resistant expansion strip 31 can be provided in the door baffle 13 to increase the complexity of the internal circuit of the door baffle 13, thereby further preventing the spread of fire. In addition, all components of this double door should be fire-resistant.

[0048] According to the fire-resistant double-leaf door for high-speed trains of the present invention, multiple fire-resistant expansion strips 31 are installed at the junction of the first door body 11 and the second door body 12 of the door assembly; the junction between the door assembly and the vehicle body 21 is configured as a bent structure, and multiple fire-resistant expansion strips 31 are installed at the bent structure; and multiple fire-resistant expansion strips 31 are installed at the junction of the door assembly and the slide rail 4. When a fire occurs, the multiple fire-resistant expansion strips 31 can expand due to heat, thereby completely sealing the gaps in the door assembly, thereby achieving the flame-retardant technical effect. That is, compared with existing double-leaf doors, the fire-resistant time can be effectively extended to meet the fire resistance requirements of high-speed trains.

[0049] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. A fire-resistant double door for high-speed trains, slidably connected to a slide rail, characterized in that: Fire-resistant double doors for high-speed trains include: The door assembly is provided with a first door body and a second door body that are movably connected; the connection between the door assembly and the vehicle body is formed into a bent structure; a fire-resistant assembly comprising a plurality of fire-resistant intumescent strips; A plurality of fireproof expansion strips are provided at the connection between the first door body and the second door body; a plurality of fireproof expansion strips are provided at the connection between the door body assembly and the vehicle body; and a plurality of fireproof expansion strips are provided at the connection between the door body assembly and the slide rail.

2. The fire-resistant double door for high-speed trains according to claim 1, characterized in that: The extending direction of the slide rail is formed as a first direction. Along the first direction, an accommodating portion is formed at the end of the first door body close to the second door body. The accommodating portion runs through the top and bottom ends of the first door body in the height direction.

3. The fire-resistant double door for high-speed trains according to claim 2, characterized in that: Along the first direction, a convex portion is formed on the end of the second door body close to the first door body; when the door body assembly is in a closed state, the convex portion extends into the accommodating portion accordingly.

4. The fire-resistant double door for high-speed trains according to claim 3, characterized in that: The accommodating portion is formed into a U-shaped open structure opening toward the second door body, and both side walls of the open structure are formed with recessed portions; along the first direction, the recessed portion is located at one end away from the opening of the accommodating portion.

5. The fire-resistant double door for high-speed trains according to claim 4, characterized in that: The fireproof expansion strip is correspondingly arranged in the recessed portion, and the thickness of the fireproof expansion strip is greater than the recessed depth of the recessed portion.

6. The fire-resistant double door for high-speed trains according to claim 4, characterized in that: Along the first direction, a first assembly groove is further formed at the end of the first door body close to the second door body, and a second assembly groove is formed at the end of the protrusion away from the second door body, and anti-collision rubber strips are provided in the first assembly groove and the second assembly groove; When the door assembly is in a closed state, the anti-collision rubber strip correspondingly connected to the first assembly groove abuts against the second door assembly; The anti-collision rubber strip correspondingly connected to the second assembly groove abuts against the bottom of the accommodating portion.

7. The fire-resistant double door for high-speed trains according to claim 1, characterized in that: A vehicle body baffle is provided at the connection between the vehicle body and the door assembly; the door assembly further comprises a door baffle formed into a U-shaped structure, and the first door body and the second door body are connected to the vehicle body via the door baffle; When the door assembly is in a closed state, the vehicle body baffle extends into the door baffle; when the door assembly is in an open state, the vehicle body baffle moves in a direction away from the door baffle.

8. The fire-resistant double door for high-speed trains according to claim 7, characterized in that: The fireproof expansion rubber strip is provided on a side of the vehicle body baffle away from the vehicle body; and the fireproof expansion rubber strip is provided at a bending part of the inner wall of the door body baffle.

9. The fire-resistant double door for high-speed trains according to claim 1, characterized in that: A sliding groove corresponding to the sliding rail is formed at the bottom end of the door assembly in the height direction.

10. The fire-resistant double door for high-speed trains according to claim 9, characterized in that: The fireproof expansion strips are provided on the inner wall of the slide groove, and the fireproof expansion strips are distributed on both sides of the extension direction of the slide rail.

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