KR101694351B1

KR101694351B1 - Tunnel fire door

Info

Publication number: KR101694351B1
Application number: KR1020160029378A
Authority: KR
Inventors: 한상주; 안승주; 한의석; 박태원; 박상헌
Original assignee: 주식회사 동일기술공사
Priority date: 2016-03-11
Filing date: 2016-03-11
Publication date: 2017-01-09

Abstract

The present invention relates to a fire door for a railroad tunnel, and the objective of the present invention is to apply the fire door to an evacuation path of a railroad tunnel, such as a road tunnel, an undersea tunnel, a long and large tunnel, etc., strongly maintain the fire door in a closed state without being affected by external pressure such as wind pressure, and solving difficulty in opening due to a pressure difference, so as to realize quick evacuation. According to the present invention, the fire door comprises: a fire door frame (20) installed in each exit of an evacuation connection path installed along a driving direction of the tunnel at predetermined intervals and having an evacuation path; the fire door (30) hinged on the fire door frame to open/close the evacuation path of the fire door frame; a locking device to maintain closing of the fire door; and the main line side handle to release locking of the locking device. The locking device includes two or more lockers (41, 42) installed in an upper and/or lower part of the fire door at predetermined intervals along a lateral direction to be able to lifted/lowered, and inserted into each locking groove formed in the fire door frame, so as to lock the fire door, and opening/closing rods (45, 46) to unlock the lockers by operation of the main line side handle.

Description

{TUNNEL FIRE DOOR}

The present invention relates to a railway tunnel fire door, and more particularly, to a railway tunnel fire door, and more particularly, to a railway tunnel fire door, and more particularly, to a railway tunnel fire door having a fire door for escape of a railway tunnel (a road tunnel, a submarine tunnel, The present invention relates to a railway tunnel fire door, which keeps the railway tunnel open at a closed state and eliminates the difficulty of opening and closing due to a pressure difference.

In recent years, in Korea, underground transportation has been underground in order to shift the ground transportation to the center of green and public transportation, and this is an underground road.

As part of the underground road, there is a railroad tunnel.

Construction of railway tunnels in Korea and all over the world is continuing to increase. In modern railway transportation systems, the speeding up of railway vehicles and the enlargement of railway tunnels are progressing. In addition, Underwater tunnels are being developed.

Especially, in the case of pole tunnels, it is advantageous that the distance of travel and the speed of operation increase due to the straightening of the route. On the contrary, the disaster prevention performance such as evacuation is decreased and the tunnel system becomes very complicated due to the long tunnel. It is necessary to consider safety design considering these factors.

For example, a submarine submarine tunnel is a tunnel of 45 km or more, which passes through the sea. The tunnel is constructed every 15 km to plan and design disaster prevention scenarios and facilities where the train stops at the station when the fire occurs and the evacuees evacuate through the service tunnel have.

In the case of such a submarine submarine tunnel, an evacuation connection passage is established for the safety of the large pizza, and a fire door is installed at the entrance and exit of the evacuation connection passage to prevent the spread of the fire smoke and to block the flame.

1 and 2 show an evacuation connection passage of a railway tunnel. As shown in Fig. 1, an evacuation connection passage 3 is provided between two-way (upward and downward) railway lines 1 and 2, Fire doors 4 are provided at the two outlets of the lines 1 and 2 and the evacuation connection passages 3 to open the fire doors 4 when the railway line 1 or 2 is fired, 2, a tunnel type service passage 5 is provided between the railway lines 1 and 2 to connect the service passage 5 to the evacuation connection passage 2. [ (4) is installed in four places of entrance and exit, and there is also a specification to connect the railway line (1, 2) through the railway line (3) and open the fire door (4) (3) to the service channel (5) to evacuate.

The fire door 4 of the railroad tunnel is composed of a quadrilateral fire door frame 4a and two fire door doors 4b hinged to the fire door frame 4a at the ends farther from each other, , 2), a high pressure air pressure is generated due to the running of the railway, and the door (4b) is prevented from opening by the air pressure, and a locking device is provided to prevent the flame and the smoke from spreading in the event of a fire.

4, the locking device includes a locker 5, a locker 5, and a locker 5, which are installed at upper and lower portions of the fire door 4b so as to be movable forward and backward (upward and downward) And a main-line-side handle 6 connected to the opening and closing rod for operating the opening and closing of the locker 5. The main-line-side handle 6 is rotated by the force of the escaping person to lower the locker 5 on the upper side through the opening / closing rod while lifting the locker 5 on the lower side to release the lock. The locker 5 is coupled to the frame 4a to lock the fire door 4b while returning to the home position by the elastic force.

The high pressure is applied to the fire door 4 by the air pressure inside the tunnel due to the frequent passage of the high speed train. Since the installation structure of the fire door 4 concentrates only the high pressure on only one locker 5, And the fire door frame 4a are frequently damaged, so that the entire locker 5 or the fire door 4 is replaced. The door 4b of the fire door 4 forms a jaw at the side of the railway line 1 or 2 of the fire door frame 4a so that the door 4b of the fire door 4 is not opened toward the railway line 1 or 2, So that only a large load is applied to the locker 5.

In addition, when the door 4b is opened, large air pressure may be applied to the door 4b. Accordingly, the door 4b may not be opened quickly because the escaping person is exerting an opposite force to the force of opening the door 4b. There is also a problem that the time is delayed and the person's life is damaged.

In the airtight type fire door for a tunnel for opening and closing an entrance of a shelter or an auxiliary evacuation tunnel, a door is provided in a tunnel and is fixed to a fixed door for closing a part of the entrance, Wow; A sliding door formed of a pair of the fixed doors and having a roller supporting bracket for supporting the upper roller so as to be suspended from a rail provided on the upper portion, The upper roller is seated and supported by a rail bracket fixed to the ceiling surface at a predetermined interval so as to be movable, and a downward bent portion is formed at a plurality of predetermined positions near the closing position of the sliding door, When the sliding door is closed, the sliding door is lowered and brought into close contact with the floor surface, thereby blocking the flame and the smoke, and has the above-described problems.

Published patent application No. 10-2012-0005247

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a fire door for escape of a railway tunnel (a road tunnel, a submarine tunnel, a long tunnel, etc.) The present invention has been made in view of the above problems, and it is an object of the present invention to provide a railway tunnel fire door capable of maintaining a closed state of a railway tunnel and preventing the difficulty of opening and closing due to a pressure difference.

The railway tunnel fire door according to the present invention is installed at the entrance of the evacuation connection passage formed at a predetermined distance along the direction of travel of the tunnel, and includes a fire door frame having an escape route; A fire door which is hinged to the fire door frame to open and close the escape passage of the fire door frame; A locking device to maintain the closing of the fire door; Wherein the locking device is mounted on the one or more of the upper and lower portions of the door of the fire door so as to be able to move up and down along the width direction, At least two lockers inserted into the formed locking grooves for locking the door of the fire door, and an opening / closing rod for locking the locker by operation of the main line side handle.

The present invention is characterized by a combination of a locker and a sub-locker for locking a fire door on both sides of a fire door, wherein the sub-locker is interlocked with the locker.

The present invention is characterized in that a fire door is composed of a combination of a small fire door and a large fire door so that the small fire door can be opened first to relieve the pressure difference and to open the large fire door quickly with a small force .

According to the railway tunnel fire door of the present invention, the load applied to the door of the fire door is dispersed through the plurality of rockers (Example 1) and the door of the fire door is locked on both sides of the door of the fire door (Example 2) Even if the wind pressure is applied to the fire door, it prevents damage to the locker and the fire door frame and improves the durability of the fire door by maintaining the closing of the fire door so as to keep the fire door closed and prevent the fire and the fire from spreading to the escape route It has the effect of safely protecting the large pizza.

In addition, by varying the size of the door of the fire door, the fire door can be opened quickly by reducing the repulsive force applied to the door from the opposite side, thereby relieving the pressure difference and opening the door of the remaining fire door quickly with little force. (Example 3).

1 and 2 are views showing an installation state of an escape passage and a fire door of a railroad tunnel, respectively.
FIG. 3 and FIG. 4 are a plan view and a front view, respectively, of the installation state of the tunnel fire door according to the prior art.
5 and 6 are front views showing a railway tunnel fire door according to the first embodiment of the present invention, respectively.
7 is a front view showing an example in which a rocker can be moved as a modification of the railway tunnel fire door according to the first embodiment of the present invention.
8 is a side view of a locking device applied to a railway tunnel fire door according to a second embodiment of the present invention.
FIG. 9 is a view showing a sub-locker and a transmitting member applied to a railway tunnel fire door according to a second embodiment of the present invention; FIG.
10 is an exemplary view of a sub-locker applied to a railway tunnel fire door according to a second embodiment of the present invention;
11 is another example of a transfer member applied to a railway tunnel fire door according to a second embodiment of the present invention.
FIG. 12 is a view showing that a sub-locker applied to a railway tunnel fire door according to a second embodiment of the present invention locks outside a fire door; FIG.
13 is a view showing an example of electronically controlling a sub-locker applied to a railway tunnel fire door according to a second embodiment of the present invention.
14 is a front view showing a railway tunnel fire door according to a third embodiment of the present invention.
15 is a side view of a railway tunnel fire door according to a fourth embodiment of the present invention.
16 is a view showing an example in which a water spraying means is applied to a railway tunnel fire door according to the present invention.

&Lt; Example 1 >

5 and 6, the railway tunnel fire door 10 according to the present embodiment includes a fire door frame 20 and a fire door 30, two or more fire doors 30, A lock device 40 having lockers 41, 42 and 43 of the lock device 40 and a main line side handle 44 for operating the unlocking of the lock device 40.

The fire door frame 20 and one or more (two shown) fire door doors 30 are the same as those of the conventional art, and thus a detailed description thereof will be omitted.

One of the main line side handles 44 is installed at a height that facilitates operation on one surface of the door 30 (the surface facing the railway line opposite to the evacuation connection path).

The locking device 40 includes two or more lockers 41, 42 and 43 respectively inserted into the locking grooves 21 opened toward the upper and lower sides of the fire door frame 20 respectively, Closing arms 45, 46, 47 for unlocking the lockers 41, 42, 43 by the operation of the locks 41, 42, 43. That is, even though the fire door 20 is locked through the plurality of lockers 41, 42, and 43 and the high pressure air pressure is applied to the door 20 during the running of the railroad, it is dispersed in the plurality of lockers 41, .

The lockers 41, 42 and 43 are configured to move in the direction opposite to the direction toward the fire door frame 20 through the opening and closing rods 45, 46 and 47 respectively at the upper and lower portions of the fire door 30, And locks the fire door 30 through a member (such as a spring).

The main line side handle 44 is arranged, for example, horizontally and transversely to the side barrel door 30 so as to rotate in both directions opposite to the direction toward the door 30, And the main rod 48 is moved up and down. When the main line side handle 44 is depressed when the main line side handle 44 is unlocked, the upper main rod 48 is lowered and the lower main rod 48 is raised, And unlocks the lockers 41, 42, 43 through the opening / closing rods 45, 46, 47.

The main line side handle 44 is not limited to the shape of a transverse bar but is applicable to all commonly used door main line side handles.

Side handle 44a is provided on the side opposite to the main-line-side handle 44 of the fire door 30 and the main-line-side handle 44 and the evacuation-side handle 44a share the lock device 40, It is possible to perform the unlocking operation on both sides and the evacuation side, which can be carried out through the fourth embodiment or the like described below.

The plurality of opening and closing rods 45,46 and 47 are connected to the main rod 48 and one opening and closing rod 45 is formed integrally with the main rod 48. The other opening and closing rods 46,47, All of which are branched from the main load 48 are possible.

Namely, the main rod 48 and the opening and closing rods 45, 46, 47 can be variously configured under the premise that the locks 41, 42, 43 can be unlocked by a single operation of the main line side handle 48 Do.

The locking grooves 21 formed in the fire door frame 20 are formed on the side of the railway line of the fire door frame 20 so that the same quantity as that of the lockers 41, Alternatively, as shown in FIG. 7, one may be applied to the length corresponding to the left and right widths of the fire door frame 20.

In the case of FIG. 7, the lockers 41 and 42 can move left and right in the locking groove 21, and additionally, the opening and closing rods 45 and 46, on which the respective lockers 41 and 42 are mounted, So that the spacing of the lockers 41 and 42 can be easily adjusted without replacing the material.

The interval adjusting rods 49 are constructed such that pipes of different diameters are connected to each other in a stretchable manner and are assembled together through fasteners (such as bolts and nuts), fasteners (bolts and nuts, etc.) A turnbuckle type in which threads are formed in opposing directions on opposite ends and the length is adjusted through a nut, and the like.

Although FIG. 7 shows two lockers 41 and 42, the three lockers shown in FIG. 6 are similarly applied.

According to the present embodiment, a plurality of lockers 41 and 42 are inserted into the locking grooves 21 of the fire door frame 20 to keep the fire door 30 in a locked state (The main-side handle 44 or the main rod 48 or the lockers 41 and 42 are resiliently supported in the locking direction, for example).

The high pressure air pressure inside the railroad track is applied to the door 30 and the lockers 41 and 42 support the fire door 30 at different points so that the fire door 30 The lockers 41 and 42, the locking grooves 21 and the fire door frame 20 having the lockers 41 and 42 and the fire door frame 20 having the locking doors 21 and 22 support the fire door 30 with a uniform force.

For example, when a passenger is evacuated due to a fire in a railway, when the escapee pushes the main-line-side handle 44, the rod 48 at the upper and lower portions of the main- The upper and lower lockers 41 and 42 are lowered and raised so as to come out of the locking groove 21 and release the lock of the door 30 and in this state the door 30 Escape through escape route.

&Lt; Example 2 >

As shown in Figs. 8 and 9, the railway tunnel fire door 10 according to the second embodiment is different from the first embodiment in that it is constituted by a double locking device 40. Fig.

The double lock device 40 is a locker 41 of Embodiment 1 (one locker, two or more lockers are all possible and one is shown and described as an example), a main line side handle 44, And a sub-locker 50 that locks the door 30 on the opposite side of the locker 41. The sub-locker 50 is provided on the side of the rocker door 41,

The locker 41 of the first embodiment is located at a position protruding from the surface of the railway line of the door 30 and the sublocker 50 is provided with a sublocking groove 31 formed in the door 30, And the periphery of the door 30 is locked at the side facing the insertion or evacuation connection passage.

The sub-locker 50 is configured to lock / unlock the fire door 30 in conjunction with the operation of the locker 41, so that there is an advantage that no operation is required. To the sub-locker (50).

A box-shaped frame 22 (a frame is applied to a conventional fire door frame, which is newly added by the present invention) is formed on the upper, lower, upper, lower, right and left sides of the fire door frame 20, And the transfer member is installed inside the frame 22. [

The frame 22 is formed with a locking groove 21 into which the locker 41 is inserted to lock the door 30 of the fire door.

The transmitting member includes a raising and lowering bar 51 which is installed in a locking groove 21 so as to be able to move up and down through a rocker 41, a seesaw motion through a substantially central hinge in a frame 22, And a seesick bar 52 rotatably connected to the other side and a sub rocker 50 rotatably connected to the other side.

According to this configuration, the locker 41 is inserted into the locking groove 21 to lock the primary lock, and the elevating rod 51 is raised to lower the sub-locker 50 on the opposite side of the seespot 52, (50) is inserted into the sublocking groove (31) so that secondary locking is performed.

When the locker 41 is lowered when the lock is released, the sub-locker 50 is lifted and released from the sub-locking groove 31 of the door 30 to thereby perform secondary locking.

In order to release the locking of the sub-locker 50, the lowering of the locker 41 must lead to the lowering of the elevating rod 51. For example, when the elevating rod 51 is resiliently supported in the downward direction A coil spring 53 for raising the seesaw 52 on the side of the sub-locker 50 and lowering the elevation bar 51 on the opposite side is preferably applied as the member.

10 is a diagram showing an example of the sub-locker 50. The sub-locker 50 includes a rectangular body 51 and a sub-locking groove 31 protruding from one surface of the body 51 at a smaller cross- (Not shown).

The sub-locker 50 is applicable to one, two or more of the longitudinal direction.

The transmission member may be replaced with a gear train 52 (or a raising rod 51 and a seam rod 52) as another form of the gear train. 11, a rack 41a is formed on one side of the locker 41 while a rack 50a is formed on one side of the sub-locker 50. The gear train 54 of the transmission member is fixed to the frame One side of which is engaged with the rack 41a of the rocker 41 and the other side is formed by an odd number of gears meshing with the rack 50a of the sub-locker 50. [ Here, the rake of the rocker 41 can be replaced with a rack of a lifting rod and a lifting rod that are lifted and lowered by the rocker 41.

Of course, a coil spring is applied so that the unlocking of the locker 41 is made by unlocking the sublocker 50. The compression spring and the tension spring are selected and applied to the coil spring according to the installation position.

The sub-locker 50 is not inserted into the sublocking groove 41 of the door 30 and can be used to wrap the edge of the door 30 at the outside of the door 30 as shown in FIG. It is possible.

That is, the locker 41 and the sub-locker 50 can be applied to not only one place but also two or more places as in the first embodiment.

While the sub-locker 50 has been described as being locked / unlocked by manual operation by the handle on the main line of the large pizza, the sub-locker 50 can be automatically operated by detecting the position of the locker 41 .

For example, as shown in FIG. 13, a locking sensor 60 (a contact switch is also possible) for detecting the locking of the locker 41 and a power source And an actuator 61 for locking the sub-locker 50 in response thereto. The actuator 61 may be a combination of a solenoid, a motor driven by power supply, and a plunger that linearly reciprocates by the rotational force of the motor to lock the sub-locker 50.

Although only the upper portion of the door 30 is shown in the drawing, the same sub-locker 50 is applied to the lower portion of the door 30 as well.

The locker 41 and the sub-locker 50 lock the fire door 30 together and the locker 41 and the sub-locker 50 move along the opening direction of the fire door 30, Lock door 30 is locked by locking the door 30 at a different location so that the door 30 is free from wobbling even when high pressure wind pressure is applied and consequently the locker 41 and sub- 50 and the fire door frame 20 from being deformed.

&Lt; Example 3 >

As shown in FIG. 14, the railway tunnel fire door according to the present embodiment includes a small fire door 30-1 and two large fire door doors 30-1 and 30-2 as two fire door doors 30 in one fire door frame 20 30-2). It is characterized in that the fire door is easily opened and evacuated to the evacuation connection passage when a high pressure is applied to the evacuation connection passage to push the door toward the evacuation connection passage.

The small fire door 30-1 is of the same size and smaller than the two fire doors, and the large fire door 30-2 is larger than the conventional fire door.

Since the small fire door 30-1 is smaller in size than the conventional fire door, it can be opened and opened faster with less force than the conventional fire door. When the small fire door 30-1 is opened, air flows from the evacuation connection passage toward the large pizza So that the large fire door 30-2 is larger in size than the conventional fire door but can be opened more easily.

Accordingly, since the small fire door 30-1 is intended to solve the pressure difference between the evacuation connection passage side and the railway line side, it is possible to have a small size that the escapee can not pass through, and of course, It is also possible to make a size.

The evacuator must open the small fire door 30-1 before the large fire door 30-2 and the pressure on the side of the evacuation connection passage is higher than the pressure on the side of the railway line, Force is applied to push the small fire door 30-1 in the connecting passage, but less force is applied than the large fire door 30-2 and the conventional fire door so that it can be opened faster with less force.

Thus, when the small fire door 30-1 is opened, an air flow toward the railroad line is formed from the evacuation connection passage to eliminate or reduce the pressure difference, and the large fire door 30-2 is pushed to evacuate to the evacuation connection passage.

The present embodiment is equipped with a locker for locking the small fire door 30-1 and the large fire door 30-2.

The locker applied to this embodiment can be the same as the conventional locker, the locker of the first embodiment, the locker of the second embodiment, and the lockers of the first and second embodiments, It is also possible that the same locker is applied to the fire door 30-2.

Since the small fire door 30-1 and the large fire door 30-2 are different in size and different in external pressure, the small fire door 30-1 and the large fire door 30-2 are different from each other in the locker of the present embodiment, It is possible that the locker for the door 30-1 is smaller than the locker for the large fire door 30-2 and there is no sub-locker.

15, the built-in type locking device 80 is installed in the door 30 of the fire door 30 so that the built-in type lock device 80 is installed in the door door 30. As shown in FIG. 15, The lockers 41 and 41 formed on the upper and lower sides of the door 30 are operated by the operation of the main line side handle 44 and the evacuation side handle 44a on the main line side and the evacuation side respectively.

The built-in lock device 80 rotates in engagement with the first pinion 81 and the first pinion 81 rotated by the main line side handle 44 and is connected to the evacuation side handle 44a, 44a are connected to the upper and lower lockers 41 via the connecting rods respectively while being engaged with both sides of the second pinion 82 and the second pinion 82 rotated by the operation of the main line side handle 44 and the evacuation side And first and second racks 83 and 84 for releasing the locking by the locker 41 by the operation of the handle 44a. Although not shown in the figure, an elastic member is applied to maintain the locked state of the locker 41 at all times.

The first pinion 81 can be inserted into the inside of the door 30 without protruding out of the door 30 as shown in the figure and protected by the cover when protruding outside the door 30 .

The second pinion 82 is rotatably mounted in the interior of the fire door 30.

The second pinion 82 can be connected to the evacuation side handle 44a via the bevel gear 85, that is, the main side handle 44 is lowered to the lower side, And the locking is released by the rotation operation.

It is preferable that the first and second racks 83 and 84 are applied together with the guide rails which are engaged with the second pinions 82 and are raised and lowered in the opposite directions to each other and formed vertically in the vertical direction inside the door 30.

The present embodiment is applicable to the first, second, and third embodiments.

The present invention applies water spraying means to prevent the spread of flame and mildew when evacuating large pizzas to enable rapid evacuation.

16, the water spraying means includes a fire sensor 70 for detecting a fire, a water tank 71 containing water therein, a pump 72 for pumping water from the water tank 71, A nozzle 73 installed above the railway line of the frame 20 for spraying and spraying water from the pump 72 and a control unit for controlling the operation of the pump 72 in the event of a fire based on the detection values of the fire sensor 70, And a controller 74 for controlling the controller.

Further, the door sensor that senses the opening of the door 30 to spray water only when the door 30 is opened can be further applied, that is, the controller 74 can control the fire sensor 70 The pump 72 is controlled to be ON-operated only under the condition that the fire door 30 is opened by the door sensor, and water is not sprayed unless the fire door 30 is opened. This has the advantage of spraying water only on the escape route where the evacuee is evacuated.

The water spraying means is applicable to all the embodiments described above.

The door 30 of the fire door of the present invention is formed with an air flow hole, and an opening / closing plate 32 (shown in Fig. 5) for opening and closing the air flow hole is applied. The opening / closing plate 32 is configured to open / close the air flow hole by a pressure difference without manual operation / automatic control.

10: fire door, 20: fire door frame
30: Fire door, 40: Lock
41, 42, 43: locker, 44: main line side handle
45, 46, 47: opening / closing rod, 48: main rod
50: sub-locker, 51:
52: Seesaw bar, 53: Coil spring
54: gear train, 60: locking sensor
61: Actuator, 70: Fire sensor
71: water tank, 72: pump,
73: nozzle, 74: controller
80: Built-in lock,

Claims

And is installed at the entrance of the evacuation connection passage formed at a predetermined distance along the direction of travel of the tunnel,
A fire door frame having an escape route;
A fire door which is hinged to the fire door frame to open and close the escape passage of the fire door frame;
A locking device to maintain the closing of the fire door;
Side handle for releasing locking of the locking device,
The locking device is mounted on the one or more of the upper and lower sides of the door so as to be movable up and down at a predetermined interval along the width direction and inserted into a locking groove formed in the door frame to lock the door A locker, and an opening / closing rod for locking the locker by an operation of the main-line-side handle,
Wherein the locking device is configured such that the opening and closing rods connected to two or more lockers can be adjusted in spacing by means of spacing rods.

And is installed at the entrance of the evacuation connection passage formed at a predetermined distance along the direction of travel of the tunnel,
A fire door frame having an escape route;
A fire door which is hinged to the fire door frame to open and close the escape passage of the fire door frame;
A locking device to maintain the closing of the fire door;
Side handle for releasing locking of the locking device,
The locking device is mounted on the one or more sides of the upper and lower portions of the door, and is connected to the main-line handle through an opening / closing rod, and is inserted into a locking groove formed in the fire door frame upon unlocking operation of the main- And a sub-locker connected to the locker through a transmitting member on the opposite side of the locker to lock the door of the fire door in conjunction with locking of the locker,
The transfer member is installed in a locking groove of the fire door frame so as to be able to move up and down through the locker. The fire door is installed to move seesaw through a hinge inside the fire door frame. The lift bar is rotatably connected to one side, Wherein the sub-locker includes a seesh bar to which the sub-locker is rotatably connected.

And is installed at the entrance of the evacuation connection passage formed at a predetermined distance along the direction of travel of the tunnel,
A fire door frame having an escape route;
A fire door which is hinged to the fire door frame to open and close the escape passage of the fire door frame;
A locking device to maintain the closing of the fire door;
Side handle for releasing locking of the locking device,
The fire door is divided into small fire door doors and large fire door doors of different sizes. The large fire door is opened by opening the small fire door,
The locking device is mounted on the one or more of the upper and lower portions of the door of the fire door so as to be able to move up and down along the width direction at regular intervals and is connected to the main line side handle through the opening and closing rod, At least two lockers for locking the door of the fire door by being inserted into a locking groove formed in the fire door frame, a sub-locker connected to the locker through a transmitting member on the opposite side of the locker for interlocking with the locking of the locker door, Wherein the railway tunnel fire door comprises:

And is installed at the entrance of the evacuation connection passage formed at a predetermined distance along the direction of travel of the tunnel,
A fire door frame having an escape route;
A fire door which is hinged to the fire door frame to open and close the escape passage of the fire door frame;
A locking device to maintain the closing of the fire door;
Side handle for releasing locking of the locking device,
The locking device is mounted on the one or more of the upper and lower portions of the door of the fire door so as to be able to move up and down along the width direction at regular intervals and is connected to the main line side handle through the opening and closing rod, At least two lockers inserted into a locking groove formed in the fire door frame to lock the door of the fire door, a sub-locker connected to the locker through a transmitting member on the opposite side of the locker to interlock with the locking of the locker door, / RTI >
The fire door is divided into a small fire door and a large fire door with different sizes. The large fire door is opened after the small fire door is opened to eliminate a pressure difference between both sides of the fire door,
Wherein the locking device is configured such that the opening and closing rods connected to two or more lockers can be adjusted in spacing by means of spacing rods.

delete

[Claim 4] The fire extinguishing apparatus according to claim 4, wherein the transmitting member is a raising and lowering rod installed in the locking groove of the fire door frame so as to be able to move up and down through the locker, a seesaw movement through the hinge inside the fire door frame, Wherein the sub rocker is rotatably connected to the other side of the railway tunnel.

[8] The apparatus of claim 8, further comprising: a locking sensor installed in the fire door frame for sensing locking of the locker; and an actuator for locking the sub-locker when power is applied when the sensing value of the locking sensor is locked. Tunnel fire door.

delete

The railway tunnel fire door according to any one of claims 1 to 4, comprising water spray means for spraying water at the top of the fire door frame upon a fire.