Fireproof and soundproof door of motor train unit
By designing fireproof and soundproof doors in the EMU, and using fireproof glass, heat insulation blankets, and multi-layer sealing systems, the fire resistance and noise reduction issues between diesel locomotives and passenger cars have been solved, achieving a high level of safety and comfort, and meeting international standards for fireproofing and sound insulation.
Patent Information
- Application Number
- CN202520029260.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-07
AI Technical Summary
In existing technologies, the partition doors between the diesel locomotive and passenger cars in dual-power EMUs lack good fire resistance and noise reduction performance, resulting in insufficient safety.
A fireproof and soundproof door for high-speed trains was designed. It uses fireproof glass, heat insulation blanket, sound insulation felt, fireproof expansion strips and sealing strips to form a door structure with fireproof and sound insulation functions. It includes laminated composite glass, ceramic fiber heat insulation blanket and multi-layer sealing system to ensure the door's fire resistance and noise reduction performance.
It improves the safety and comfort of the diesel locomotive and passenger car in the EMU, has good fire protection and sound insulation, meets the fire protection requirements of EN45545-2 R22 HL3 level, and provides a sound insulation effect with a weighted sound insulation of ≥20dB.
Smart Images
Figure CN223867901U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of partition doors between diesel locomotives and passenger cars on high-speed railways, specifically to a fireproof and soundproof door for high-speed trains. Background Technology
[0002] The 160 km / h high-altitude EMU, designed under the leadership of CRRC Puzhen, is a dual-power EMU with diesel engine. It employs a world-first dual-end dual-control strategy, allowing for switching between diesel and electric power modes to control operation according to operational needs. It also features combined diesel and electric traction capabilities, significantly improving the stability and reliability of the EMU's operation. The overall design has reached international leading levels. Against the backdrop of the global energy crisis, the dual-power (electric + diesel) EMU greatly enhances the country's railway transportation capacity. CRRC has already begun promoting the dual-power EMU to other regions, indicating a huge market demand.
[0003] Currently, in the development of dual-power EMUs, it is necessary to solve the safety problem at the connection end between the diesel locomotive and the passenger cars, namely the partition door between the high-speed railway diesel locomotive and the passenger cars, which requires good fire resistance and noise reduction performance. Based on this, we propose a fireproof and soundproof door for EMUs. Utility Model Content
[0004] The purpose of this utility model is to overcome the above-mentioned problems existing in the prior art and provide a fireproof and soundproof door for EMU trains. It is specially developed and designed for dual-source power EMU trains, and has certain fireproof and soundproof functions. It is easy to resist fire and reduce noise, thereby ensuring the safety of the connection between diesel locomotives and passenger cars.
[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:
[0006] A fireproof and soundproof door for high-speed trains includes a door frame and a door leaf. One side of the front of the door leaf is connected to the door frame via a hinge. A door lock is installed on the side of the door leaf away from the hinge. A limit mechanism is connected between the top of the back of the door leaf and the door frame. Fireproof glass is fitted onto the door leaf, and a glass sealing strip is provided between the fireproof glass and the door leaf. The cavity of the door leaf is filled with a heat insulation blanket, and a sound insulation felt is provided on the back of the door leaf. A sealing strip and a fireproof expansion strip are installed on the door frame.
[0007] Preferably, the inner surface of the door leaf is coated with fire-retardant paint, and the outer surface of the door leaf facing the fire is coated with fire-retardant paint.
[0008] Based on the above technical features, the fire resistance of the door leaf is improved.
[0009] Preferably, the limiting mechanism includes a pulley guide rail, a fixed base, and a connecting rod. The fixed base is fixedly installed on the top back of the door leaf, and the pulley guide rail is fixedly installed on the top back of the door frame. One end of the connecting rod is rotatably connected to a pulley axle pin, and a pulley is provided on the pulley axle pin, with the pulley located in the pulley guide rail. The other end of the connecting rod is rotatably connected to the fixed base via a pivot pin, and a first connecting rod spacer and a second connecting rod spacer are provided on the pivot pin. The first connecting rod spacer is located between the connecting rod and the fixed base, and the second connecting rod spacer is located inside the fixed base. The bottom of the pulley guide rail has a sliding groove that slides with the pulley axle pin.
[0010] Based on the above technical features, it is easy for the pulley pin to slide on the pulley guide rail, and for the pulley on it to roll in the pulley guide rail.
[0011] Preferably, the fireproof glass is laminated composite glass.
[0012] Based on the above technical features, it has fire-resistant properties.
[0013] Preferably, the installation area between the door leaf and the fireproof glass is designed as a U-shaped groove structure, and the glass sealing strip is a U-shaped fireproof expansion strip that matches the U-shaped groove structure and is wrapped around the fireproof glass.
[0014] Based on the above technical features, the rubber strip expands when heated, filling the gap between the fireproof glass and the door leaf and isolating the flame.
[0015] Preferably, the door leaf is composed of a steel frame and a weathering steel skin, the heat insulation blanket is a ceramic fiber heat insulation blanket, which is filled between the steel frame and the weathering steel skin, and the sound insulation felt is pasted on the inside of the weathering steel skin and is a 0.8mm thick VN series sound insulation felt.
[0016] Based on the above technical features, the weighted sound insulation level can be guaranteed to be ≥20dB, which has a good sound insulation effect.
[0017] Preferably, the door frame is assembled and welded from aluminum profiles, and the fire-resistant expansion strip is a FLEXTHERM 190 fire-resistant expansion strip; the door frame profiles are provided with grooves, and FLEXTHERM 190 fire-resistant expansion strips are bonded to the center of the grooves by applying FLEXTHERM 520 adhesive.
[0018] Based on the above technical features, the FLEXTHERM 190 fire-resistant expansion strip begins to expand at around 190°C, with an expansion ratio of 20 times, which can fill the gap between the door leaf and the door frame.
[0019] Preferably, the sealing strip is located at the gap between the door leaf and the door frame, and there are two strips. The sealing strip is made of EPDM rubber.
[0020] Based on the above technical features, when the car door is closed, the sealing strip is compressed and tightly adheres to the door panel, sealing the car door and isolating noise.
[0021] Preferably, the door lock is a railway passenger car standard type 24-1 door lock, and the door lock material is stainless steel.
[0022] Based on the above technical features, it has fire-resistant properties.
[0023] In summary, this utility model has at least one of the following beneficial effects:
[0024] This utility model provides a fireproof and soundproof door for high-speed trains, which uses double sealing strips and fireproof expansion strips, as well as filling the door leaf with heat insulation blankets and attaching sound insulation felt to the back of the door leaf, and filling the gap between the fireproof glass and the door leaf with glass sealant strips, thereby providing certain fireproof and sound insulation functions, facilitating fire resistance and noise reduction, and ensuring the safety of connecting diesel locomotives and passenger cars. Attached Figure Description
[0025] Figure 1 This is a front view of the soundproof door of this utility model;
[0026] Figure 2 For the present utility model Figure 1 Top view;
[0027] Figure 3 For the present utility model Figure 1 The right view;
[0028] Figure 4 This is a rear view of the soundproof door of this utility model;
[0029] Figure 5 This is a diagram showing the soundproof door of this utility model in its open state;
[0030] Figure 6 For the present utility model Figure 1 Sectional view of position AA;
[0031] Figure 7 For the present utility model Figure 1 Sectional view of the BB position;
[0032] Figure 8 For the present utility model Figure 6 Enlarged view of position I in the image;
[0033] Figure 9 For the present utility model Figure 7 Enlarged view of position II in the image;
[0034] Figure 10 For the present utility model Figure 7 Enlarged view of position III in the image;
[0035] Figure 11 This is a schematic diagram of the limiting mechanism of this utility model;
[0036] Figure 12 For the present utility model Figure 11 The left view;
[0037] The attached diagram lists the components represented by each number as follows:
[0038] 1-Door frame, 2-Door leaf, 3-Hinge, 4-Door lock, 5-Limiting mechanism, 501-Pulley rail, 502-Fixing seat, 503-Connecting rod, 504-Pulley pin, 505-Pulley, 506-Rotating pin, 507-Connecting rod spacer one, 508-Connecting rod spacer two, 6-Fireproof laminated glass, 7-Glass sealing strip, 8-Insulation blanket, 9-Sealing strip, 10-Fireproof expansion strip, 11-Sound insulation felt. Detailed Implementation
[0039] The following is in conjunction with the appendix Figure 1-12 The present invention will be described in further detail below.
[0040] One embodiment of this utility model is shown below: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A fireproof and soundproof door for high-speed trains is provided, which is a steel hinged door, including a door frame 1 and a door leaf 2. The inner surface of the door leaf 2 is sprayed with fire-retardant paint, and the outer surface of the door leaf 2 facing the fire is sprayed with fire-retardant paint to improve the fire resistance of the door leaf 2. One side of the front of the door leaf 2 is connected to the door frame 1 by a hinge 3, which allows the door leaf 2 to be opened and closed by rotation on the door frame 1, with an opening angle of not less than 90°. A door lock 4 is installed on the side of the door leaf 2 away from the hinge 3. The door lock 4 is a railway passenger car standard type 24-1 door lock, which is made of stainless steel and has fireproof function. A limit mechanism 5 is connected between the top of the back of the door leaf 2 and the door frame 1.
[0041] See Figure 4 , Figure 11 and Figure 12The limiting mechanism 5 includes a pulley guide rail 501, a fixed base 502, and a connecting rod 503. The fixed base 502 is fixedly installed on the top back of the door leaf 2, and the pulley guide rail 501 is fixedly installed on the top back of the door frame 1. One end of the connecting rod 503 is rotatably connected to a pulley pin 504, and a pulley 505 is provided on the pulley pin 504. The pulley 505 is located in the pulley guide rail 501. The bottom of the pulley guide rail 501 has a sliding groove that slides with the pulley pin 504. The other end of the connecting rod 503 is rotatably connected to the fixed base 502 through a pivot pin 506. The pin 506 is provided with a first connecting rod spacer 507 and a second connecting rod spacer 508. The first connecting rod spacer 507 is located between the connecting rod 503 and the fixed seat 502, and the second connecting rod spacer 508 is located inside the fixed seat 502. As the door leaf 2 rotates to open and close on the door frame 1, the connecting rod 503 rotates on the fixed seat 502 and on the pulley shaft pin 504, thereby driving the pulley shaft pin 504 to slide in the extension direction on the pulley guide rail 501, and causing the pulley 505 on it to roll in the pulley guide rail 501, which facilitates limiting the door leaf 2 when it rotates to open on the door frame 1.
[0042] See Figure 1 and Figure 10 Fire-resistant glass 6 (performance should meet the requirements of GB 15763.1-2009) is fitted and installed on door leaf 2. Fire-resistant glass 6 is laminated composite glass with fire-resistant function, and its fire resistance performance must meet the requirements of the overall fire resistance performance of the outer door. There is a layer of water glass interlayer (expanded sodium silicate) in the middle of the laminated composite glass. When the glass is exposed to fire and the temperature reaches 120℃, the expanded sodium silicate starts to work. It releases water and forms a milky white protective layer to insulate heat and ensure the integrity of the glass. A glass sealing strip 7 is set between fire-resistant glass 6 and door leaf 2. The installation area between door leaf 2 and fire-resistant glass 6 is designed as a U-shaped groove structure. The glass sealing strip 7 is a U-shaped fire-resistant expansion strip that matches the U-shaped groove structure. It is wrapped around the fire-resistant glass 6. When heated, the strip expands and fills the gap between the glass and door leaf 2 to isolate the flame.
[0043] See Figure 7 and Figure 8 The cavity of door leaf 2 is filled with an insulating blanket 8, and a sound insulation felt 11 is installed on the back of door leaf 2. Door leaf 2 is composed of a steel frame and a weathering steel skin. The insulating blanket 8 is a ceramic fiber insulating blanket, which is filled between the steel frame and the weathering steel skin. The sound insulation felt 11 is pasted on the inside of the weathering steel skin and is a 0.8mm thick VN series sound insulation felt. Ceramic fiber fireproof and heat-insulating material has the characteristics of low thermal conductivity, excellent heat insulation performance, low high-temperature shrinkage, low density, and low heat capacity. The VN series sound insulation felt is 0.8mm thick and can ensure a weighted sound insulation of ≥20dB, which has a good sound insulation effect.
[0044] See Figure 7 , Figure 8and Figure 9 The door frame 1 is equipped with sealing strip 9 and fireproof expansion strip 10;
[0045] The door frame 1 is assembled and welded from aluminum profiles. The fire-resistant expansion strip 10 is a FLEXTHERM 190 fire-resistant expansion strip. The profile of the door frame 1 has a groove. FLEXTHERM 190 fire-resistant expansion strip is bonded to the groove by applying FLEXTHERM 520 adhesive. The FLEXTHERM 190 fire-resistant expansion strip begins to expand at about 190°C, with an expansion ratio of 20 times, which can fill the gap between the door leaf 2 and the door frame 1. The fire resistance meets the EN45545-2 R22 HL3 level. At the same time, there are two sealing strips 9 located at the gap between the door leaf 2 and the door frame 1. The sealing strips 9 are made of EPDM rubber. When the door is closed, the sealing strips 9 are compressed and tightly adhered to the door leaf skin, sealing the door and isolating noise.
[0046] Working principle: The soundproof door adopts double sealing strips 9 and fire-resistant expansion strips 10, and fills the door leaf 2 with heat insulation blankets 8 and attaches sound insulation felt 11 to the back of the door leaf 2. The gap between the fireproof glass 6 and the door leaf 2 is filled with glass sealant strips 7, so that the soundproof door has certain fireproof and sound insulation functions, which facilitates fire resistance and noise reduction, and ensures the safety of connecting the diesel locomotive and the bus.
[0047] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A fireproof and soundproof door for high-speed trains, comprising a door frame (1) and a door leaf (2), wherein one side of the front of the door leaf (2) is connected to the door frame (1) via a hinge (3), characterized in that: A door lock (4) is installed on the side of the door leaf (2) away from the hinge (3), and a limit mechanism (5) is connected between the top of the back of the door leaf (2) and the door frame (1). Fireproof glass (6) is fitted onto the door leaf (2), and a glass sealant strip (7) is provided between the fireproof glass (6) and the door leaf (2). The cavity of the door leaf (2) is filled with an insulating blanket (8), and a sound insulation felt (11) is provided on the back of the door leaf (2). The door frame (1) is equipped with a sealing strip (9) and a fire-resistant expansion strip (10).
2. The fireproof and soundproof door for high-speed trains according to claim 1, characterized in that: The inner surface of the door leaf (2) is coated with fire-retardant paint, and the outer surface of the door leaf (2) facing the fire is coated with fire-retardant paint.
3. The fireproof and soundproof door for high-speed trains according to claim 1, characterized in that: The limiting mechanism (5) includes a pulley guide rail (501), a fixed seat (502) and a connecting rod (503). The fixed seat (502) is fixedly installed on the top back of the door leaf (2). The pulley guide rail (501) is fixedly installed on the top back of the door frame (1). One end of the connecting rod (503) is rotatably connected to a pulley pin (504). A pulley (505) is provided on the pulley pin (504). The pulley (505) is located in the pulley guide rail (501). The bottom of the pulley guide rail (501) is provided with a sliding groove that slides with the pulley pin (504). The other end of the connecting rod (503) is rotatably connected to the fixed seat (502) via a pivot pin (506). The pivot pin (506) is provided with a connecting rod spacer one (507) and a connecting rod spacer two (508). The connecting rod spacer one (507) is located between the connecting rod (503) and the fixed seat (502), and the connecting rod spacer two (508) is located inside the fixed seat (502).
4. The fireproof and soundproof door for high-speed trains according to claim 1, characterized in that: The fireproof glass (6) is a laminated composite glass.
5. A fireproof and soundproof door for high-speed trains according to claim 1, characterized in that: The installation area between the door leaf (2) and the fireproof glass (6) is designed as a U-shaped groove structure, and the glass adhesive strip (7) is a U-shaped fireproof expansion adhesive strip that matches the U-shaped groove structure and is wrapped around the fireproof glass (6).
6. A fireproof and soundproof door for high-speed trains according to claim 1, characterized in that: The door leaf (2) is composed of a steel frame and a weathering steel skin. The heat insulation blanket (8) is a ceramic fiber heat insulation blanket, which is filled between the steel frame and the weathering steel skin. The sound insulation felt (11) is pasted on the inside of the weathering steel skin and is a layer of VN series sound insulation felt with a thickness of 0.8mm.
7. A fireproof and soundproof door for high-speed trains according to claim 1, characterized in that: The door frame (1) is composed of aluminum profiles spliced and welded together. The fireproof expansion strip (10) is FLEXTHERM 190 fireproof expansion strip. The profile of the door frame (1) is provided with a groove. FLEXTHERM 190 fireproof expansion strip is bonded to the groove by brushing FLEXTHERM 520 glue in the groove.
8. A fireproof and soundproof door for high-speed trains according to claim 1, characterized in that: The sealing strip (9) is located at the gap between the door leaf (2) and the door frame (1), and there are two of them. The sealing strip (9) is made of EPDM rubber.
9. A fireproof and soundproof door for high-speed trains according to claim 1, characterized in that: The door lock (4) is a railway passenger car standard type 24-1 door lock, and the door lock material is stainless steel.