Intercity railway tunnel protective door

Abstract

The embodiment of the utility model provides an inter-city railway tunnel protection door, and relates to the field of tunnel protection doors. An auxiliary unlocking mechanism is arranged on one side of the fire receiving face of the door leaf, and the first rotating disc lock handle is connected with the auxiliary unlocking mechanism. The auxiliary unlocking mechanism comprises a first pedal and a connecting rod assembly, the first pedal is slidably arranged on the door leaf and located below the first rotary disc lock handle, one end of the connecting rod assembly is hinged to the first pedal, and the other end of the connecting rod assembly is connected with the first rotary disc lock handle. An auxiliary locking mechanism is arranged on one side of the unexposed surface of the door leaf, and the second turntable lock handle is connected with the auxiliary locking mechanism; the auxiliary locking mechanism comprises a second pedal and a lever assembly, the second pedal is slidably arranged on the door leaf and located below the second rotary disc lock handle, one end of the lever assembly is hinged to the second pedal, and the other end of the lever assembly is connected with the second rotary disc lock handle. When a fire disaster happens, foot strength is used for assisting in unlocking or locking, hand scalding caused by too high temperature is avoided, the applied force is increased in a foot treading mode, and the door leaf opening and closing convenience is improved.

Description

Technical Field

[0001] The utility model relates to the field of tunnel protection doors, in particular to an intercity railway tunnel protection door. Background Art

[0002] With the large-scale construction of high-speed railways, there are more and more long and large railway tunnels. The problems of fire prevention and rescue design in tunnels are becoming increasingly prominent. Protective doors, as the first disaster prevention barrier for personnel evacuation passages, play a significant role.

[0003] The lock structure of the tunnel protection door is the main structure to ensure the stability of the protection door when it is closed. The existing lock structure of the tunnel protection door mostly adopts a turntable lock, which is opened and closed by manual rotation. However, when a fire occurs in a railway tunnel, the temperature of the turntable rises due to the sharp increase in ambient temperature. At this time, turning the turntable by hand may cause serious burns. Utility Model Content

[0004] In view of the above problems, an embodiment of the utility model is proposed to provide an intercity railway tunnel protective door that overcomes the above problems or at least partially solves the above problems.

[0005] An intercity railway tunnel protective door, comprising a door leaf and a door frame, one side of the door leaf is hinged to one side of the door frame, a fireproof lock is provided on the side of the door leaf away from the hinge, the fireproof lock comprises a lock body, a first rotary lock handle and a second rotary lock handle, the lock body is embedded in the door leaf and locked to the door frame, the first rotary lock handle and the second rotary lock handle are respectively arranged on the fire-receiving side and the fire-proof side of the door leaf and are coaxially rotatably connected to the lock body, the first rotary lock handle and the second rotary lock handle are used to drive the lock body to rotate to unlock or lock;

[0006] An auxiliary unlocking mechanism is provided on the fire-exposed side of the door leaf, and the first rotary lock handle is connected to the auxiliary unlocking mechanism; the auxiliary unlocking mechanism comprises a first pedal and a connecting rod assembly, the first pedal is slidably arranged on the door leaf and is located below the first rotary lock handle, one end of the connecting rod assembly is hinged to the first pedal, and the other end of the connecting rod assembly is connected to the first rotary lock handle;

[0007] An auxiliary locking mechanism is provided on the back-to-fire side of the door leaf, and the second turntable lock handle is connected to the auxiliary locking mechanism; the auxiliary locking mechanism includes a second pedal and a lever assembly, the second pedal is slidably arranged on the door leaf and is located below the second turntable lock handle, one end of the lever assembly is hinged to the second pedal, and the other end of the lever assembly is connected to the second turntable lock handle.

[0008] Preferably, the first rotary disk lock handle comprises a first rotating shaft and a first rotating disk, one end of the first rotating shaft is connected to the lock body, and the other end of the first rotating shaft is fixedly connected to the first rotating disk;

[0009] The connecting rod assembly comprises a connecting rod 1 and a connecting rod 2, one end of the connecting rod 1 is fixedly connected to the first rotating shaft, the other end of the connecting rod 1 is hinged to one end of the connecting rod 2, and the other end of the connecting rod 2 is hinged to the first pedal;

[0010] When the first pedal moves downward, the second connecting rod drives the first connecting rod to rotate in the unlocking direction.

[0011] Preferably, the second rotary disk lock handle comprises a second rotating shaft and a second rotary disk, one end of the second rotating shaft is connected to the lock body, and the other end of the second rotating shaft is fixedly connected to the second rotary disk;

[0012] The lever assembly comprises a connecting rod 3, a connecting rod 4 and a lever, one end of the connecting rod 3 is fixedly connected to the second rotating shaft, the other end of the connecting rod 3 is hinged to one end of the lever, the other end of the lever is hinged to one end of the connecting rod 4, and the other end of the connecting rod 4 is hinged to the second pedal; the lever is rotatably connected to the door leaf, and the connection point is close to the connecting rod 3;

[0013] When the second pedal moves downward, the connecting rod four drives one end of the lever to move downward, so that the other end of the lever moves upward, and the lever drives the connecting rod three to rotate in the locking direction.

[0014] Preferably, the first pedal is slidably connected to a first slide groove provided in the door leaf via a first slider, and a compression spring is provided between the bottom of the first slider and the first slide groove.

[0015] Preferably, the second pedal is slidably connected to a second sliding groove provided in the door leaf via a second sliding block.

[0016] Preferably, the first rotating shaft and the second rotating shaft are both fixedly sleeved with an irregular sleeve, and one end of the connecting rod 1 and the connecting rod 3 is provided with a connecting hole matched with the irregular sleeve.

[0017] Preferably, the door leaf includes a door leaf outer frame, a flame retardant plywood, and a fire door core plate and a fire board which are symmetrically arranged on both sides of the flame retardant plywood from the inside to the outside, and the door leaf outer frame covers the flame retardant plywood, the fire door core plate and the fire board; a plurality of first frames are arranged at intervals in the fire door core plate, and a second frame is arranged at the end of the flame retardant plywood and one of the fire door core plates.

[0018] Preferably, the door frame includes a door frame outer frame, a third frame and a fourth frame, the door frame outer frame encloses the third frame and the fourth frame, and the fourth frame is arranged on a side of the third frame close to the door leaf and is offset and opposite to the second frame.

[0019] Preferably, a plurality of fireproof expansion seals are provided between the door leaf and the door frame.

[0020] Preferably, the door leaf outer frame and the door frame outer frame are both stainless steel plates; the third frame is formed of a rectangular structure of galvanized channel steel and galvanized steel plates; the first frame, the second frame and the fourth frame all include steel plates and fireproof layers filled in the steel plates.

[0021] The present application specifically includes the following advantages:

[0022] In an embodiment of the present application, the fireproof lock includes a lock body, a first rotary lock handle and a second rotary lock handle, the lock body is embedded in the door leaf and locked to the door frame, the first rotary lock handle and the second rotary lock handle are respectively arranged on the fire-exposed side and the non-fire-exposed side of the door leaf and are coaxially rotatably connected to the lock body, the first rotary lock handle and the second rotary lock handle are used to drive the lock body to rotate to unlock or lock; an auxiliary unlocking mechanism is provided on the fire-exposed side of the door leaf, and the first rotary lock handle is connected to the auxiliary unlocking mechanism; the auxiliary unlocking mechanism includes a first pedal and a connecting rod assembly , the first pedal is slidably arranged on the door leaf and is located below the first rotary lock handle, one end of the connecting rod assembly is hinged to the first pedal, and the other end of the connecting rod assembly is connected to the first rotary lock handle; an auxiliary locking mechanism is arranged on the side of the door leaf facing away from the fire, and the second rotary lock handle is connected to the auxiliary locking mechanism; the auxiliary locking mechanism includes a second pedal and a lever assembly, the second pedal is slidably arranged on the door leaf and is located below the second rotary lock handle, one end of the lever assembly is hinged to the second pedal, and the other end of the lever assembly is connected to the second rotary lock handle. By arranging an auxiliary unlocking structure on the side of the fire-exposed surface, when a fire occurs, the first pedal is stepped on, and the first rotary lock handle is driven to rotate in the unlocking direction through the connecting rod assembly to unlock the lock body, so that the door leaf can be quickly opened to escape from the side where the fire occurs; by arranging an auxiliary locking structure on the side of the fire-exposed surface, when a fire occurs, the second pedal is stepped on, and the second rotary lock handle is driven to rotate in the locking direction through the lever assembly to lock the lock body, so that the door leaf can be quickly closed and locked from the side facing away from the fire to prevent the fire from spreading. This application can use the power of the feet to assist in unlocking or locking in the event of a fire, avoiding burns when the hands are unlocked or locked due to excessive temperature, and increases the force by stepping on the foot, thereby improving the efficiency and convenience of opening and closing the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 It is a schematic diagram of the structure of the fire-exposed side of the utility model intercity railway tunnel protection door;

[0025] Figure 2 It is a schematic diagram of the structure of the non-fire side of the utility model intercity railway tunnel protection door;

[0026] Figure 3 It is a partial structural schematic diagram of the auxiliary unlocking mechanism of the utility model;

[0027] Figure 4 It is a schematic cross-sectional view of the utility model of the intercity railway tunnel protection door;

[0028] Figure numerals: 1. door leaf; 11. first slide groove; 111. compression spring; 12. second slide groove; 13. door leaf outer frame; 14. flame retardant plywood; 15. fireproof door core board; 16. fireproof board; 17. first frame; 18. second frame; 2. door frame; 21. door frame outer frame; 22. third frame; 23. fourth frame; 31. lock body; 32. first turntable lock handle; 321. first rotating shaft; 322. first turntable; 33. second turntable lock handle; 41. first pedal; 42. connecting rod one; 421. irregular sleeve; 43. connecting rod two; 51. second pedal; 52. connecting rod three; 53. connecting rod four; 54. lever; 6. fireproof expansion seal. DETAILED DESCRIPTION

[0029] 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.

[0030] Reference Figure 1-Figure 4, shows a schematic structural diagram of an intercity railway tunnel protective door of the utility model, which may specifically include the following structures: a door leaf 1 and a door frame 2, one side of the door leaf 1 is hinged to one side of the door frame 2, a fireproof lock is provided on the door leaf 1 away from the hinged side, the fireproof lock comprises a lock body 31, a first turntable lock handle 32 and a second turntable lock handle 33, the lock body 31 is embedded in the door leaf 1 and locked to the door frame 2, the first turntable lock handle 32 and the second turntable lock handle 33 are respectively arranged on the fire-receiving side and the non-fire-receiving side of the door leaf 1 and are coaxially rotatably connected to the lock body 31, the first turntable lock handle 32 and the second turntable lock handle 33 are used to drive the lock body 31 to rotate to unlock or lock;

[0031] An auxiliary unlocking mechanism is provided on the fire-exposed side of the door leaf 1, and the first rotary lock handle 32 is connected to the auxiliary unlocking mechanism; the auxiliary unlocking mechanism comprises a first pedal 41 and a connecting rod assembly, the first pedal 41 is slidably arranged on the door leaf 1 and is located below the first rotary lock handle 32, one end of the connecting rod assembly is hinged to the first pedal 41, and the other end of the connecting rod assembly is connected to the first rotary lock handle 32;

[0032] An auxiliary locking mechanism is provided on the back-to-fire side of the door leaf 1, and the second turntable lock handle 33 is connected to the auxiliary locking mechanism; the auxiliary locking mechanism includes a second pedal 51 and a lever 54 assembly, the second pedal 51 is slidably arranged on the door leaf 1 and is located below the second turntable lock handle 33, one end of the lever 54 assembly is hinged to the second pedal 51, and the other end of the lever 54 assembly is connected to the second turntable lock handle 33.

[0033] In an embodiment of the present application, the fireproof lock includes a lock body 31, a first rotary lock handle 32 and a second rotary lock handle 33, the lock body 31 is embedded in the door leaf 1 and locked to the door frame 2, the first rotary lock handle 32 and the second rotary lock handle 33 are respectively arranged on the fire-receiving side and the fire-proof side of the door leaf 1 and are coaxially rotatably connected to the lock body 31, the first rotary lock handle 32 and the second rotary lock handle 33 are used to drive the lock body 31 to rotate to unlock or lock; an auxiliary unlocking mechanism is provided on the fire-receiving side of the door leaf 1, and the first rotary lock handle 32 is connected to the auxiliary unlocking mechanism; the auxiliary unlocking mechanism includes a first pedal 41 and a connecting rod assembly, The first pedal 41 is slidably provided on the door leaf 1 and is located below the first turntable lock handle 32, one end of the connecting rod assembly is hinged to the first pedal 41, and the other end of the connecting rod assembly is connected to the first turntable lock handle 32; an auxiliary locking mechanism is provided on the back-to-fire side of the door leaf 1, and the second turntable lock handle 33 is connected to the auxiliary locking mechanism; the auxiliary locking mechanism includes a second pedal 51 and a lever 54 assembly, the second pedal 51 is slidably provided on the door leaf 1 and is located below the second turntable lock handle 33, one end of the lever 54 assembly is hinged to the second pedal 51, and the other end of the lever 54 assembly is connected to the second turntable lock handle 33. By setting an auxiliary unlocking structure on the side of the fire-exposed surface, when a fire occurs, the first pedal 41 is stepped on, and the first rotary lock handle 32 is driven to rotate in the unlocking direction through the connecting rod assembly to unlock the lock body 31, and the door leaf 1 can be quickly opened from the side where the fire occurs to escape; by setting an auxiliary locking structure on the side away from the fire, when a fire occurs, the second pedal 51 is stepped on, and the second rotary lock handle 33 is driven to rotate in the locking direction through the lever 54 assembly to lock the lock body 31, and the door leaf 1 can be quickly closed and locked from the side away from the fire to prevent the fire from spreading. This application can use the power of the foot to assist in unlocking or locking in the event of a fire, avoid burns when the hand is unlocked or locked due to excessive temperature, and increase the force by stepping on it, thereby improving the efficiency and convenience of opening and closing the door leaf 1.

[0034] Next, an intercity railway tunnel protection door in this exemplary embodiment will be further described.

[0035] In the embodiment of the present application, the fireproof lock includes a lock body 31, a first rotary lock handle 32 and a second rotary lock handle 33. The lock body 31 is embedded in the door leaf 1 and locked with the door frame 2. The first rotary lock handle 32 and the second rotary lock handle 33 are respectively arranged on the fire-receiving side and the fire-repelling side of the door leaf 1 and are coaxially rotatably connected to the lock body 31. The first rotary lock handle 32 and the second rotary lock handle 33 are used to drive the lock body 31 to rotate to unlock or lock, wherein the fire-receiving side is a push-door side, and the fire-repelling side is a pull-door side, that is, when it is on the fire-receiving side, the door leaf 1 is pushed open, and when it is on the fire-repelling side, the door leaf 1 is pulled open. The first rotary lock handle 32 and the second rotary lock handle 33 are respectively used to rotate and drive the lock body 31 from the fire-receiving side and the fire-repelling side to unlock and lock, thereby realizing the opening and closing of the door leaf 1.

[0036] In the embodiment of the present application, an auxiliary unlocking mechanism is provided on the fire-exposed side of the door leaf 1, and the first rotary lock handle 32 is connected to the auxiliary unlocking mechanism; the auxiliary unlocking mechanism includes a first pedal 41 and a connecting rod assembly, the first pedal 41 is slidably provided on the door leaf 1 and is located below the first rotary lock handle 32, one end of the connecting rod assembly is hinged to the first pedal 41, and the other end of the connecting rod assembly is connected to the first rotary lock handle 32. By providing an auxiliary unlocking structure on the fire-exposed side, when a fire occurs, the first rotary lock handle 32 is heated and cannot be touched, and the first pedal 41 is stepped on by the foot force, and the first pedal 41 moves downward, and the first rotary lock handle 32 is driven to rotate in the unlocking direction by the connecting rod assembly, so that unlocking can be achieved, which is convenient and quick, and the door leaf 1 can be quickly opened from the fire-exposed side to escape, and it is not easy to get burned.

[0037] As an example, the first rotary disk lock handle 32 includes a first rotating shaft 321 and a first rotary disk 322, one end of the first rotating shaft 321 is connected to the lock body 31, and the other end of the first rotating shaft 321 is fixedly connected to the first rotary disk 322; the connecting rod assembly includes a connecting rod 1 42 and a connecting rod 2 43, one end of the connecting rod 1 42 is fixedly connected to the first rotating shaft 321, the other end of the connecting rod 1 42 is hinged to one end of the connecting rod 2 43, and the other end of the connecting rod 2 43 is hinged to the first pedal 41; when the first pedal 41 moves downward, the connecting rod 2 43 drives the connecting rod 1 42 to rotate in the unlocking direction. The connecting rod 1 42 is horizontally arranged or tilted upwardly arranged at an initial position rotating toward the unlocking side, so as to facilitate the downward rotation and unlocking driven by the first pedal 41.

[0038] As an example, the first pedal 41 is slidably connected to the first slide groove 11 opened in the door leaf 1 through the first slider, and a compression spring 111 is provided between the bottom of the first slider and the first slide groove 11. The first pedal 41 is stably connected by the first slider and will not deviate when sliding along the first slide groove 11. The tunnel protection door is a protective device that resists the air pressure brought by the train running in the tunnel, keeps the internal equipment intact and is not harmed by the air pressure shock wave. Therefore, it needs to be in a closed state for a long time. By providing the compression spring 111, under normal conditions, under the elastic auxiliary action of the compression spring 111, the lock body 31 always remains in a locked state, and only when it needs to be unlocked, it is necessary to step on the first pedal 41 to unlock.

[0039] In the embodiment of the present application, an auxiliary locking mechanism is provided on the side of the back-to-fire side of the door leaf 1, and the second rotary disk lock handle 33 is connected to the auxiliary locking mechanism; the auxiliary locking mechanism includes a second pedal 51 and a lever 54 assembly, the second pedal 51 is slidably provided on the door leaf 1 and is located below the second rotary disk lock handle 33, one end of the lever 54 assembly is hinged to the second pedal 51, and the other end of the lever 54 assembly is connected to the second rotary disk lock handle 33. By providing the auxiliary locking mechanism on the side of the back-to-fire side, when a fire occurs, the second rotary disk lock handle 33 is heated and cannot be touched, and the second pedal 51 is stepped on by the foot force, and the second pedal 51 moves downward, and the second rotary disk lock handle 33 is driven to rotate in the locking direction by the lever 54 assembly, so that locking can be achieved, which is convenient and fast, and the door leaf 1 can be quickly closed and locked from the side of the back-to-fire side to prevent the spread of fire, and it is not easy to cause burns.

[0040] As an example, the second rotary lock handle 33 includes a second rotating shaft and a second rotating disk, one end of the second rotating shaft is connected to the lock body 31, and the other end of the second rotating shaft is fixedly connected to the second rotating disk; the lever 54 assembly includes a connecting rod 3 52, a connecting rod 4 53 and a lever 54, one end of the connecting rod 3 52 is fixedly connected to the second rotating shaft, the other end of the connecting rod 3 52 is hinged to one end of the lever 54, the other end of the lever 54 is hinged to one end of the connecting rod 4 53, and the other end of the connecting rod 4 53 is hinged to the second pedal 51; the lever 54 is rotatably connected to the door leaf 1, and the connection point is close to the connecting rod 3 52; when the second pedal 51 moves downward, the connecting rod 4 53 drives one end of the lever 54 to move downward, so that the other end of the lever 54 moves upward, and the lever 54 drives the connecting rod 3 52 to rotate in the direction of locking. In the initial state, the connecting rod 3 52 is set horizontally or tilted downward, so that it is easy to rotate upward and lock under the drive of the lever 54. Specifically, by stepping on the second pedal 51, the second pedal 51 moves downward, driving the connecting rod four 53 to move downward, and the connecting rod four 53 drives one end of the lever 54 to rotate downward. Under the action of the fulcrum, the other end of the lever 54 rotates upward, driving the connecting rod three 52 to rotate upward and lock.

[0041] As an example, the second pedal 51 is slidably connected to the second slide groove 12 provided in the door leaf 1 through the second slider. The second pedal 51 is stably connected through the second slider and is not easily deviated when sliding along the second slide groove 12. No compression spring 111 is provided in the second slide groove 12 to avoid accidental unlocking under the elastic action of the compression spring 111. In the locked state, under the action of the compression spring 111 on the fire-receiving side and the locking action of the lock body 31 itself, automatic unlocking will not occur.

[0042] As an example, the first rotating shaft 321 and the second rotating shaft are both fixedly sleeved with an irregular sleeve 421, and one end of the connecting rod 1 42 and the connecting rod 3 52 is provided with a connection hole adapted to the irregular sleeve 421. Specifically, the irregular sleeve 421 can be a hexagonal nut adapted to the first rotating shaft 321 and the second rotating shaft, which is fixed to the first rotating shaft 321 and the second rotating shaft, and one end of the connecting rod 1 42 and the connecting rod 3 52 is provided with a hexagonal connection hole adapted to the hexagonal nut, and the connecting rod 1 42 and the connecting rod 3 52 are sleeved on the hexagonal nut, so that they can be stably connected to the first rotating shaft 321 and the second rotating shaft, drive them to rotate, and are not prone to slipping.

[0043] It should be noted that when no fire occurs, when the first rotary lock handle 32 or the second rotary lock handle 33 is manually rotated to unlock or lock, the auxiliary unlocking mechanism and the auxiliary locking mechanism will move accordingly without affecting their rotation.

[0044] As an example, the door leaf 1 includes a door leaf outer frame 13, a flame retardant plywood 14, and a fire door core board 15 and a fire board 16 symmetrically arranged on both sides of the flame retardant plywood 14 from the inside to the outside, and the door leaf outer frame 13 covers the flame retardant plywood 14, the fire door core board 15 and the fire board 16; a plurality of first skeletons 17 are arranged in intervals in the fire door core board 15, and a second skeleton 18 is arranged at the end of the flame retardant plywood 14 and one of the fire door core boards 15. The door leaf 1 is composed of the flame retardant plywood 14, the fire door core board 15, the fire board 16 and the door leaf outer frame 13, so that the fireproof performance of the door leaf 1 can be improved. The strength of the door leaf 1 can be improved by using a plurality of first skeletons 17 and second skeletons 18.

[0045] As an example, the fireproof door core board 15 is composed of magnesium oxide, magnesium chloride, magnesium sulfate, perlite, foaming agent, etc. to form a fire-resistant insulation layer to improve the fireproof performance.

[0046] As an example, the door frame 2 includes a door frame outer frame 21, a third frame 22 and a fourth frame 23. The door frame outer frame 21 covers the third frame 22 and the fourth frame 23. The fourth frame 23 is arranged on a side of the third frame 22 close to the door leaf 1 and is offset and opposite to the second frame 18. A plurality of fireproof expansion seals 6 are arranged between the door leaf 1 and the door frame 2. Through the above design, the strength of the door frame 2 is enhanced, and the sealing and stability of the door leaf 1 and the door frame 2 are improved.

[0047] As an example, the door leaf outer frame 13 and the door frame outer frame 21 are both made of stainless steel plates; the third frame 22 is formed of a rectangular structure of galvanized channel steel and galvanized steel plate; the first frame 17, the second frame 18 and the fourth frame 23 all include steel plates and fireproof layers filled in the steel plates. The stainless steel plate as the outer frame has the effects of fire prevention, corrosion resistance, high strength, etc. The frame improves the strength and also has a certain fireproof performance, thereby improving the overall fireproof performance of the door and ensuring safety.

[0048] 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.

[0049] 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.

[0050] The above is a detailed introduction to an intercity railway tunnel protective door provided by the utility model. Specific examples are used in this article 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. An intercity railway tunnel protective door, comprising a door leaf and a door frame, wherein one side of the door leaf is hinged to one side of the door frame, and a fireproof lock is provided on the side of the door leaf away from the hinge, characterized in that: The fireproof lock comprises a lock body, a first rotary lock handle and a second rotary lock handle, wherein the lock body is embedded in the door leaf and locked to the door frame, the first rotary lock handle and the second rotary lock handle are respectively arranged on the fire-receiving side and the fire-proof side of the door leaf and are coaxially rotatably connected to the lock body, and the first rotary lock handle and the second rotary lock handle are used to drive the lock body to rotate to unlock or lock; An auxiliary unlocking mechanism is provided on the fire-exposed side of the door leaf, and the first rotary lock handle is connected to the auxiliary unlocking mechanism; the auxiliary unlocking mechanism comprises a first pedal and a connecting rod assembly, the first pedal is slidably arranged on the door leaf and is located below the first rotary lock handle, one end of the connecting rod assembly is hinged to the first pedal, and the other end of the connecting rod assembly is connected to the first rotary lock handle; An auxiliary locking mechanism is provided on the back-to-fire side of the door leaf, and the second turntable lock handle is connected to the auxiliary locking mechanism; the auxiliary locking mechanism includes a second pedal and a lever assembly, the second pedal is slidably arranged on the door leaf and is located below the second turntable lock handle, one end of the lever assembly is hinged to the second pedal, and the other end of the lever assembly is connected to the second turntable lock handle.

2. The intercity railway tunnel protection door according to claim 1 is characterized in that: The first rotating disk lock handle comprises a first rotating shaft and a first rotating disk, one end of the first rotating shaft is connected to the lock body, and the other end of the first rotating shaft is fixedly connected to the first rotating disk; The connecting rod assembly comprises a connecting rod 1 and a connecting rod 2, one end of the connecting rod 1 is fixedly connected to the first rotating shaft, the other end of the connecting rod 1 is hinged to one end of the connecting rod 2, and the other end of the connecting rod 2 is hinged to the first pedal; When the first pedal moves downward, the second connecting rod drives the first connecting rod to rotate in the unlocking direction.

3. The intercity railway tunnel protection door according to claim 2 is characterized in that: The second rotary disk lock handle comprises a second rotating shaft and a second rotating disk, one end of the second rotating shaft is connected to the lock body, and the other end of the second rotating shaft is fixedly connected to the second rotating disk; The lever assembly comprises a connecting rod 3, a connecting rod 4 and a lever, one end of the connecting rod 3 is fixedly connected to the second rotating shaft, the other end of the connecting rod 3 is hinged to one end of the lever, the other end of the lever is hinged to one end of the connecting rod 4, and the other end of the connecting rod 4 is hinged to the second pedal; the lever is rotatably connected to the door leaf, and the connection point is close to the connecting rod 3; When the second pedal moves downward, the connecting rod four drives one end of the lever to move downward, so that the other end of the lever moves upward, and the lever drives the connecting rod three to rotate in the locking direction.

4. The intercity railway tunnel protection door according to claim 2 is characterized in that: The first pedal is slidably connected to a first sliding groove provided in the door leaf through a first sliding block, and a compression spring is provided between the bottom of the first sliding block and the first sliding groove.

5. The intercity railway tunnel protection door according to claim 3 is characterized in that: The second pedal is slidably connected to a second sliding groove provided in the door leaf through a second sliding block.

6. The intercity railway tunnel protection door according to claim 3, characterized in that: The first rotating shaft and the second rotating shaft are both fixedly sleeved with irregular sleeves, and one end of the connecting rod 1 and the connecting rod 3 is provided with connecting holes adapted to the irregular sleeves.

7. The intercity railway tunnel protection door according to claim 1, characterized in that: The door leaf includes a door leaf outer frame, a flame retardant plywood, and a fire door core plate and a fire board symmetrically arranged on both sides of the flame retardant plywood from the inside to the outside, and the door leaf outer frame covers the flame retardant plywood, the fire door core plate and the fire board; a plurality of first frames are arranged at intervals in the fire door core plate, and a second frame is arranged at the end of the flame retardant plywood and one of the fire door core plates.

8. The intercity railway tunnel protection door according to claim 7, characterized in that: The door frame includes a door frame outer frame, a third frame and a fourth frame. The door frame outer frame covers the third frame and the fourth frame. The fourth frame is arranged on a side of the third frame close to the door leaf and is offset and opposite to the second frame.

9. The intercity railway tunnel protection door according to claim 8, characterized in that: A plurality of fireproof expansion seals are arranged between the door leaf and the door frame.

10. The intercity railway tunnel protection door according to claim 8, characterized in that: The door leaf outer frame and the door frame outer frame are both stainless steel plates; the third frame is formed into a rectangular structure by galvanized channel steel and galvanized steel plates; the first frame, the second frame and the fourth frame all include steel plates and fireproof layers filled in the steel plates.

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