Wind-pressure-resistant fireproof door for metro section

Abstract

The embodiment of the utility model provides a metro section wind-pressure-resistant fireproof door, and relates to the field of metro fireproof doors. Comprising a door frame and a door leaf, one side of the door leaf is connected to the door frame through a plurality of elastic hinges, each elastic hinge comprises a fixing base, an elastic base and a connecting piece, the fixing bases are fixed to the door frame, the elastic bases are fixed to the door leaf, one ends of the connecting pieces are elastically connected to the elastic bases, and the other ends of the connecting pieces are rotationally connected to the fixing bases through hinge pins; the door leaf is connected with the door frame in a locked mode through the three-point locking escape lock, the three-point locking escape lock comprises three lock bodies, and the three lock bodies are arranged on the three sides of the door leaf respectively. Lock grooves are formed in the edges, corresponding to the three lock bodies, of the door frame, and lock connection blocks are elastically connected into the lock grooves and used for being connected with the lock bodies in an inserted mode to be locked. On the basis of the hinges and the escape lock, connection, opening and closing and pressure resistance of the fireproof door are achieved, and the problem that the hinge joint and the locking joint of an existing fireproof door deform and even fall off due to repeated tunnel wind pressure can be solved.

Description

Technical Field

[0001] The utility model relates to the field of subway fire doors, in particular to wind pressure resistant fire doors in subway sections. Background Art

[0002] The main purpose of setting up subway section communication passages is that when a fire occurs in an underground section of a train and the train cannot be towed to the station, passengers can get off the carriage and go into the tunnel. The communication passage between the two section tunnels can be used to evacuate passengers to another section tunnel to ensure their safety. The fire door serves the purpose of isolating the fire section from the safe section.

[0003] Due to the piston wind effect when the train is running, the wind pressure in the section tunnel changes repeatedly with the operating status of the train, and the piston wind will repeatedly impact the fire doors of the communication channel. Existing fire doors are usually fixed with hinges and locked by escape locks with multiple locking points. However, under repeated impacts, the locking points and hinges are very likely to loosen. Over time, the fire doors of the section communication channel will deform or even fall off. If they fall into the section tunnel, it will cause a power outage in the section at the least, or even cause the train to derail and cause a major safety accident. Utility Model Content

[0004] In view of the above problems, an embodiment of the utility model is proposed to provide a subway section wind pressure resistant fire door that overcomes the above problems or at least partially solves the above problems.

[0005] A subway section wind pressure resistant fire door, comprising a door frame and a door leaf, one side of the door leaf is connected to the door frame through a plurality of elastic hinges, the elastic hinge comprises a fixed seat, an elastic seat and a connecting piece, the fixed seat is fixed to the door frame, the elastic seat is fixed to the door leaf, one end of the connecting piece is elastically connected to the elastic seat, and the other end of the connecting piece is rotatably connected to the fixed seat through a hinge pin;

[0006] The door leaf is locked to the door frame through a three-point locking escape lock, and the three-point locking escape lock includes three lock bodies, which are respectively arranged on three sides of the door leaf; the door frame is provided with lock grooves on the sides corresponding to the three lock bodies, and a locking block is elastically connected in the lock groove, and the locking block is used to be plugged and locked with the lock body.

[0007] Preferably, a limiting groove is provided at one end of the elastic seat close to the fixing seat, and one end of the connecting piece is inserted into the limiting groove; a plurality of first spring dampers are provided on the inner wall of the limiting groove, and the first spring dampers abut against the connecting piece.

[0008] Preferably, the connecting piece is connected to the hinge pin shaft via a soft connecting portion, and the soft connecting portion corresponds to a rotation gap between the door frame and the door leaf.

[0009] Preferably, the opening diameter of the limiting groove is smaller than the maximum width of the portion of the connecting piece located in the limiting groove.

[0010] Preferably, an elastic rubber pad is provided on the side wall of the connecting piece that contacts the inner wall of the opening of the limiting groove.

[0011] Preferably, a plurality of second spring dampers are provided between the locking block and the lock slot; fixing plates are provided at both ends of one side of the locking block close to the lock body, and the fixing plates are fixedly connected to the locking block and the door frame via a connecting piece.

[0012] Preferably, an elastic pad is provided on one side of the fixing plate close to the door leaf.

[0013] Preferably, the door leaf comprises a door leaf outer frame and a fireproof core plate and a fireproof board wrapped in the outer frame plate, wherein the fireproof board is stacked on both sides of the fireproof core plate; and a plurality of door leaf frames are spaced apart in the fireproof core plate.

[0014] Preferably, the door frame includes a door frame outer frame and a door frame skeleton and a door frame pull strip enclosed in the door frame outer frame.

[0015] Preferably, a plurality of fireproof expansion seals are provided between the door frame and the door leaf.

[0016] The present application specifically includes the following advantages:

[0017] In an embodiment of the present application, through a door frame and a door leaf, one side of the door leaf is connected to the door frame by a plurality of elastic hinges, the elastic hinge comprises a fixed seat, an elastic seat and a connecting piece, the fixed seat is fixed to the door frame, the elastic seat is fixed to the door leaf, one end of the connecting piece is elastically connected to the elastic seat, and the other end of the connecting piece is rotatably connected to the fixed seat through a hinge pin; the door leaf is locked to the door frame through a three-point locking escape lock, the three-point locking escape lock comprises three lock bodies, and the three lock bodies are respectively arranged on three sides of the door leaf; the door frame is provided with lock grooves on the sides corresponding to the three lock bodies, and a locking block is elastically connected to the lock groove, and the locking block is used to be plugged and locked with the lock body. One side of the door leaf is connected to the door frame through an elastic hinge, one end of the connecting piece is elastically connected to the elastic seat, and the other end is rotatably connected to the fixed seat through a hinge pin, so that the door leaf can be opened and closed, and the repeated impact of the piston wind on the connected side of the door leaf can be converted into elastic potential energy to eliminate it; the door leaf is locked to the door frame through a three-point locking escape lock, and the three lock bodies are respectively connected to the three sides of the door leaf, so that the connection between the door leaf and the door frame is more secure and more stable; by setting a lock groove in the door frame, the locking block is elastically connected in the lock groove, and the locking block is locked with the lock body, so that when the door leaf is impacted by the piston wind, the locking block is driven by the lock body to elastically displace in the lock groove, thereby converting the impact force on the locked side of the door leaf into elastic potential energy. The present application is based on hinges and escape locks to achieve the connection, opening and closing, and pressure resistance of fire doors, and can solve the problem that the hinges and locking joints of existing fire doors are deformed or even fall off due to repeated tunnel wind pressure, thereby improving the structural strength and stability of fire doors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 It is a structural schematic diagram of one side of the utility model of a subway section wind pressure resistant fire door;

[0020] Figure 2 This utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 3 It is a structural schematic diagram of the other side of the utility model subway section wind pressure resistant fire door;

[0022] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0023] Figure 5 It is a cross-sectional schematic diagram of the utility model of the wind pressure resistant fire door for subway sections;

[0024] Figure numerals: 1. door leaf; 11. door leaf outer frame; 12. door leaf skeleton; 13. fireproof core board; 14. fireproof board; 2. door frame; 21. lock slot; 22. door frame outer frame; 23. door frame skeleton; 24. door frame pull strip; 3. elastic hinge; 31. fixed seat; 32. elastic seat; 321. limit slot; 322. first spring damper; 33. connecting piece; 331. soft connection part; 332. elastic rubber pad; 34. hinge pin; 4. three-point locking escape lock; 41. lock body; 42. locking block; 43. second spring damper; 44. fixed plate; 45. connecting piece; 46. elastic pad; 5. fireproof expansion seal. DETAILED DESCRIPTION

[0025] In order to make the objects, features and advantages of the present application more obvious and understandable, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0026] Reference Figure 1-Figure 5 , shows a schematic structural diagram of a subway section wind pressure resistant fire door of the utility model, which may specifically include the following structures: a door frame 2 and a door leaf 1, one side of the door leaf 1 is connected to the door frame 2 through a plurality of elastic hinges 3, the elastic hinge 3 includes a fixed seat 31, an elastic seat 32 and a connecting piece 33, the fixed seat 31 is fixed to the door frame 2, the elastic seat 32 is fixed to the door leaf 1, one end of the connecting piece 33 is elastically connected to the elastic seat 32, and the other end of the connecting piece 33 is rotatably connected to the fixed seat 31 through a hinge pin 34;

[0027] The door leaf 1 is locked to the door frame 2 through a three-point locking escape lock 4, and the three-point locking escape lock 4 includes three lock bodies 41, and the three lock bodies 41 are respectively arranged on three sides of the door leaf 1; the door frame 2 is provided with a lock groove 21 on the side corresponding to the three lock bodies 41, and a locking block 42 is elastically connected in the lock groove 21, and the locking block 42 is used to be plugged and locked with the lock body 41.

[0028] In an embodiment of the present application, through a door frame 2 and a door leaf 1, one side of the door leaf 1 is connected to the door frame 2 through a plurality of elastic hinges 3, the elastic hinge 3 includes a fixed seat 31, an elastic seat 32 and a connecting piece 33, the fixed seat 31 is fixed to the door frame 2, the elastic seat 32 is fixed to the door leaf 1, one end of the connecting piece 33 is elastically connected to the elastic seat 32, and the other end of the connecting piece 33 is rotatably connected to the fixed seat 31 through a hinge pin 34; the door leaf 1 is locked to the door frame 2 through a three-point locking escape lock 4, the three-point locking escape lock 4 includes three lock bodies 41, and the three lock bodies 41 are respectively arranged on three sides of the door leaf 1; a lock groove 21 is provided on the side of the door frame 2 corresponding to the three lock bodies 41, and a locking block 42 is elastically connected to the lock groove 21, and the locking block 42 is used to be plugged and locked with the lock body 41. One side of the door leaf 1 is connected to the door frame 2 by an elastic hinge 3, one end of the connecting piece 33 is elastically connected to the elastic seat 32, and the other end is rotatably connected to the fixed seat 31 by a hinge pin 34, so that the door leaf 1 can be opened and closed, and the repeated impact of the piston wind on the connected side of the door leaf 1 can be converted into elastic potential energy and eliminated; the door leaf 1 is locked to the door frame 2 by a three-point locking escape lock 4, and the three lock bodies 41 are respectively connected to the three sides of the door leaf 1, so that the connection between the door leaf 1 and the door frame 2 is more secure and more stable; by providing a lock groove 21 in the door frame 2, a locking block 42 is elastically connected in the lock groove 21, and the locking block 42 is locked with the lock body 41, so that when the door leaf 1 is impacted by the piston wind, the locking block 42 is elastically displaced in the lock groove 21 by the lock body 41, thereby converting the impact force on the locked side of the door leaf 1 into elastic potential energy. The present application realizes the connection, opening and closing, and pressure resistance of fire doors based on hinges and escape locks, and can solve the problem that the hinges and locking joints of existing fire doors are deformed or even fall off due to repeated tunnel wind pressure, thereby improving the structural strength and stability of fire doors.

[0029] Next, the subway section wind pressure resistant fire door in this exemplary embodiment will be further described.

[0030] In the embodiment of the present application, one side of the door leaf 1 is connected to the door frame 2 via a plurality of elastic hinges 3, wherein the elastic hinge 3 comprises a fixed seat 31, an elastic seat 32 and a connecting piece 33, wherein the fixed seat 31 is fixed to the door frame 2, the elastic seat 32 is fixed to the door leaf 1, one end of the connecting piece 33 is elastically connected to the elastic seat 32, and the other end of the connecting piece 33 is rotatably connected to the fixed seat 31 via a hinge pin 34. Through the above design, the elastic hinge 3 is elastically connected to the door leaf 1, and the repeated impact of the piston wind on the hinged side of the door leaf 1 can be converted into elastic potential energy without affecting the opening and closing of the door leaf 1, thereby preventing the hinge from being deformed, loosened or even falling off due to repeated impact.

[0031] As an example, a limiting groove 321 is provided at one end of the elastic seat 32 close to the fixed seat 31, and one end of the connecting piece 33 is inserted into the limiting groove 321; a plurality of first spring dampers 322 are provided on the inner wall of the limiting groove 321, and the first spring dampers 322 abut against the connecting piece 33. The plurality of first spring dampers 322 are respectively located on the peripheral side of the connecting piece 33, so that the contact between the connecting piece 33 and the inner wall of the limiting groove 321 is elastic contact, forming a shock absorbing structure, which prolongs the impact time of a part of the instantaneous impact of the piston wind effect through the shock absorbing structure, converts the instantaneous impact into elastic potential energy and eliminates it, thereby eliminating the impact force of the hinge point.

[0032] As an example, the connecting piece 33 is connected to the hinge pin 34 through a soft connection part 331, and the soft connection part 331 corresponds to the rotation gap between the door frame 2 and the door leaf 1. The part of the connecting piece 33 corresponding to the rotation gap is set as the soft connection part 331, which, on the one hand, does not affect the opening and closing of the door leaf 1, and on the other hand, when the door leaf 1 is impacted by the piston wind, it can reduce the collision between the door leaf 1 and the door frame 2, thereby protecting the edge of the door leaf 1.

[0033] As an example, the opening diameter of the limiting groove 321 is smaller than the maximum width of the portion of the connecting piece 33 located in the limiting groove 321. In this way, the limiting groove 321 can limit the connecting piece 33 to prevent the connecting piece 33 from being separated from the limiting groove 321 under the impact of the piston wind.

[0034] As an example, the side wall of the connecting piece 33 in contact with the inner wall of the opening of the limiting groove 321 is provided with an elastic rubber pad 332. Since no spring damper is provided at the opening, in order to avoid a rigid collision between the connecting piece 33 and the inner wall of the opening of the limiting groove 321, an elastic rubber pad 332 is provided to buffer the impact.

[0035] It should be noted that, in order to facilitate the processing and assembly of the elastic hinge 3, the elastic seat 32 can be composed of two slotted plate structures that are interlocked and spliced ​​together, and can be welded or bolted. After splicing, the slots form a limit groove 321. During assembly, the connecting piece 33 is first inserted between the two plate structures, and then the two plate structures are spliced ​​into one.

[0036] In the embodiment of the present application, the door leaf 1 is locked with the door frame 2 through a three-point locking escape lock 4. The three-point locking escape lock 4 includes three lock bodies 41, and the three lock bodies 41 are respectively arranged on three sides of the door leaf 1; the door frame 2 is provided with a lock slot 21 on the side corresponding to the three lock bodies 41, and a locking block 42 is elastically connected in the lock slot 21, and the locking block 42 is used to be plugged and locked with the lock body 41. By locking the door leaf 1 to the door frame 2 through the three-point locking escape lock 4, the connection stability between the door leaf 1 and the door frame 2 can be improved, and the overall structural strength of the fire door can be improved. By setting the locking block 42 elastically connected in the lock slot 21, when the door leaf 1 is impacted by piston wind, the door leaf 1 drives the lock body 41 to move, and the lock body 41 drives the locking block 42 to elastically displace in the lock slot 21, so that the impact force can be converted into elastic potential energy and eliminated.

[0037] As an example, a plurality of second spring dampers 43 are provided between the locking block 42 and the lock slot 21; a fixing plate 44 is provided at both ends of one side of the locking block 42 close to the lock body 41, and the fixing plate 44 is fixedly connected to the locking block 42 and the door frame 2 through a connecting member 45. The plurality of second spring dampers 43 are respectively located on the side wall and the bottom wall of the locking block 42, and play an impact buffering role on the contact surface between the locking block 42 and the lock slot 21. By setting the fixing plate 44 to be fixedly connected to the locking block 42 and the door frame 2, the locking block 42 plays a limiting role and is limited to be located in the lock slot 21. The connecting member 45 is a screw or a bolt.

[0038] As an example, an elastic pad 46 is provided on the side of the fixing plate 44 close to the door leaf 1, so that when the door leaf 1 moves under the impact of the piston wind, there is elastic contact between it and the fixing plate 44, which cushions the impact and protects the door leaf 1 and the door frame 2.

[0039] As an example, the lock groove 21 is a stepped groove, the fixing plate 44 is a stepped plate, and the locking block 42 is sunk into the lock groove 21. Through the above design, the structural strength is increased, so that the fixing plate 44 is firmly connected to the door frame 2 and the locking block 42.

[0040] As an example, the door leaf 1 includes a door leaf outer frame 11, and a fireproof core board 13 and a fireproof board 14 wrapped in the outer frame board, wherein the fireproof board 14 is stacked on both sides of the fireproof core board 13; a plurality of door leaf frames 12 are arranged at intervals in the fireproof core board 13. The door frame 2 includes a door frame outer frame 22, and a door frame frame 23 and a door frame brace 24 wrapped in the door frame outer frame 22.

[0041] The fireproof door core board is composed of magnesium oxide, magnesium chloride, magnesium sulfate, perlite, foaming agent and the like, forming a fire-resistant insulation layer to improve fireproof performance.

[0042] As an example, the door leaf outer frame 11 and the door frame outer frame 22 are both made of stainless steel plates. The stainless steel plate as the outer frame has the effects of fire prevention, corrosion resistance, high strength, etc. The skeleton improves the strength and also has a certain fire prevention performance, thereby improving the overall fire prevention performance of the door and ensuring safety.

[0043] As an example, a plurality of fire-proof expansion seals 5 are provided between the door frame 2 and the door leaf 1 , and the fire-proof expansion seals 5 improve the sealing and fire-proof performance between the door leaf 1 and the door frame 2 .

[0044] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0045] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0046] The above is a detailed introduction to a subway section wind pressure resistant fire door provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A subway section wind pressure resistant fire door, comprising a door frame and a door leaf, characterized in that: One side of the door leaf is connected to the door frame through a plurality of elastic hinges, the elastic hinge comprises a fixed seat, an elastic seat and a connecting piece, the fixed seat is fixed to the door frame, the elastic seat is fixed to the door leaf, one end of the connecting piece is elastically connected to the elastic seat, and the other end of the connecting piece is rotatably connected to the fixed seat through a hinge pin; The door leaf is locked to the door frame through a three-point locking escape lock, and the three-point locking escape lock includes three lock bodies, which are respectively arranged on three sides of the door leaf; the door frame is provided with lock grooves on the sides corresponding to the three lock bodies, and a locking block is elastically connected in the lock groove, and the locking block is used to be plugged and locked with the lock body.

2. The subway section wind pressure resistant fire door according to claim 1 is characterized in that: The elastic seat is provided with a limiting groove at one end close to the fixing seat, and one end of the connecting piece is inserted into the limiting groove; a plurality of first spring dampers are provided on the inner wall of the limiting groove, and the first spring dampers are in contact with the connecting piece.

3. The subway section wind pressure resistant fire door according to claim 2 is characterized in that: The connecting piece is connected to the hinge pin shaft via a soft connecting portion, and the soft connecting portion corresponds to a rotation gap between the door frame and the door leaf.

4. The subway section wind pressure resistant fire door according to claim 2 is characterized in that: The opening diameter of the limiting groove is smaller than the maximum width of the portion of the connecting piece located in the limiting groove.

5. The subway section wind pressure resistant fire door according to claim 4 is characterized in that: An elastic rubber pad is provided on the side wall of the connecting piece that contacts the inner wall of the opening of the limiting groove.

6. The subway section wind pressure resistant fire door according to claim 1 is characterized in that: A plurality of second spring dampers are arranged between the locking block and the lock slot; fixing plates are arranged at both ends of one side of the locking block close to the lock body, and the fixing plates are fixedly connected to the locking block and the door frame through a connecting piece.

7. The subway section wind pressure resistant fire door according to claim 6 is characterized in that: An elastic pad is arranged on one side of the fixing plate close to the door leaf.

8. The subway section wind pressure resistant fire door according to claim 1 is characterized in that: The door leaf comprises a door leaf outer frame, a fireproof core plate and a fireproof board wrapped in the outer frame plate, wherein the fireproof board is stacked on both sides of the fireproof core plate; and a plurality of door leaf frames are arranged at intervals in the fireproof core plate.

9. The subway section wind pressure resistant fire door according to claim 8, characterized in that: The door frame comprises a door frame outer frame, a door frame skeleton and a door frame pull bar which are enclosed in the door frame outer frame.

10. The subway section wind pressure resistant fire door according to claim 9, characterized in that: A plurality of fireproof expansion seals are arranged between the door frame and the door leaf.

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