Torque self-balancing underground connecting passage wind pressure evacuation door structure

Abstract

The present application relates to emergency door equipment technical field, specifically to a kind of torque self-balancing underground communication passage wind pressure prevention evacuation door structure, including door panel and pivot, door panel is installed in communication passage, the axial direction of pivot is consistent with the height direction of door panel, pivot is set in the middle position in the width direction of door panel, door panel can rotate around pivot to open or close communication passage.The present application changes the hinge (or door shaft) of the existing fire door setting in side to setting in the middle of door panel, according to the principle of lever, wind pressure on one side of door panel can simultaneously act on the door panel on both sides of pivot, so that the door panel on both sides of pivot is balanced, so when the door panel on the other side pushes door panel to open door, wind pressure will not resist the thrust of opening door, can make door panel open smoothly during opening, and then timely through communication passage, reduce the security risk of evacuation, and reach the evacuation width consistent with ordinary vertical hinged door after opening, improve evacuation safety.

Description

Technical Field

[0001] This invention relates to the field of emergency door equipment technology, and in particular to a torque-self-balancing underground connecting passage wind pressure-resistant evacuation door structure. Background Technology

[0002] When the length of two single-track underground tunnel sections in urban rail transit exceeds 600m, a connecting passage should be provided between the two tunnels. This passage should contain two parallel Class A fire doors that open in opposite directions to meet fire separation requirements and the emergency evacuation function of the tunnel section. Because the pulsating positive and negative pressures caused by the piston wind of trains in the tunnel sections frequently act on these evacuation doors, they are constantly subjected to wind pressure, leading to frequent failures in the locking mechanism and even automatic opening of the doors.

[0003] Conventional fire door hinges are usually located on the side door frame. When a fire occurs in a single-line tunnel on one side, the fire door needs to be opened in the direction of evacuation. However, under the pressure of the pressurized air supply from the opposite tunnel or other reasons, the fire door is not easy to open in the direction of evacuation. In fact, when the wind pressure is too high, the pushing force required to open the door exceeds the normal pushing force range of an adult male, thus affecting the safety of personnel evacuation in the tunnel section. Summary of the Invention

[0004] The purpose of this invention is to overcome the technical problem that existing fire doors have rotating hinges located on the side of the door, making it difficult to open due to wind pressure from the opposite tunnel after a fire occurs in a single-line tunnel on one side, thus increasing the risk of evacuation safety. The invention provides a torque-self-balancing underground connecting passage wind pressure-resistant evacuation door structure.

[0005] In a first aspect, the present invention provides a torque self-balancing underground connecting passage wind pressure evacuation door structure, including a door panel and a pivot. The door panel is installed in the connecting passage, the axial direction of the pivot is consistent with the height direction of the door panel, the pivot is located at the middle position in the width direction of the door panel, and the door panel can rotate around the pivot to open or close the connecting passage.

[0006] This invention replaces the existing side hinges (or door pivots) of fire doors with hinges located in the middle of the door panel. Based on the lever principle, the wind pressure on one side of the door panel can act on both sides of the pivot simultaneously, balancing the forces on both sides of the door panel. Therefore, when the door panel is pushed open from the other side, the wind pressure will not counteract the opening force, allowing the door panel to open smoothly during the opening process, thereby promptly opening the communication passage, reducing safety hazards during evacuation, and achieving the same evacuation width as a regular swing door after opening, thus improving evacuation safety.

[0007] Preferably, a door frame is provided above the door panel, and a first sliding groove is provided on the door frame. The first sliding groove is also provided on the ground below the door panel. The length direction of the first sliding groove is perpendicular to the length direction of the connecting channel. The two ends of the rotating shaft are respectively embedded in the first sliding groove, and the door panel can slide along the first sliding groove with the rotating shaft.

[0008] Preferably, a side slider is provided on one side of the door panel, and a second sliding groove is provided on the side wall of the communication channel. The length direction of the second sliding groove is consistent with the length direction of the communication channel. The side slider is embedded in the second sliding groove, and the door panel can slide simultaneously in the first sliding groove and the second sliding groove along with the rotating shaft and the side slider.

[0009] Preferably, the device further includes a door opener, which includes a latch disposed in the door panel. The side wall of the communication channel is also provided with a socket, which corresponds to the first slide groove and the second slide groove respectively. The latch can be inserted into the socket to lock the door panel after the door panel is closed or opened.

[0010] Preferably, the door opener further includes a rotating plate and a telescopic assembly. The rotating plate is connected to one side of the door latch, and the telescopic assembly is disposed in the door panel and connected to the tail end of the door latch. Pressing the rotating plate can drive the door latch to rotate and cause the door latch to extend or retract under the action of the telescopic assembly.

[0011] Preferably, the telescopic assembly includes a fixed sawtooth block and a rotating sawtooth block that cooperate with each other. The rotating sawtooth block is connected to the door latch and can rotate relative to the fixed sawtooth block to drive the door latch to extend or retract.

[0012] Preferably, the rotating sawtooth block is connected to the latch via a ratchet mechanism.

[0013] Preferably, the device further includes a door closer, which includes a first electromagnetic plate and a second electromagnetic plate disposed thereon. The first electromagnetic plate is disposed on the door panel, and the second electromagnetic plate is disposed on the door frame. When energized, the first electromagnetic plate and the second electromagnetic plate can attract each other to lock the door panel.

[0014] Preferably, a control circuit is connected between the door opener and the door closer, and when the rotating plate is pressed, the control circuit can de-energize the door closer to release the door plate from locking.

[0015] Preferably, the control circuit is connected to a time relay, which can control the power-off and delayed power-on of the door closer, and the delay control time of the time relay can be adjusted and set.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a torque-balanced underground connecting passage wind pressure-resistant evacuation door structure. By changing the hinge (or door pivot) of the existing fire door to be located in the middle of the door panel, according to the lever principle, the wind pressure on one side of the door panel can act on the door panels on both sides of the pivot simultaneously, so that the door panels on both sides of the pivot are balanced. Therefore, when the door panel is pushed open from the other side, the wind pressure will not resist the opening force, allowing the door panel to open smoothly, thereby opening the connecting passage in time, reducing the safety hazards of evacuation, and achieving the same evacuation width as an ordinary swing door after opening, thus improving evacuation safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cross-section of a double-track tunnel with the evacuation doors closed.

[0018] Figure 2 This is a schematic diagram of the cross-section of a double-track tunnel with the evacuation doors open.

[0019] Figure 3 This is a top-down view of the door panel when it is closed.

[0020] Figure 4 This is a front view diagram of the door panel when it is closed.

[0021] Figure 5 This is a top-down view of a single door panel when it is opened to 45°.

[0022] Figure 6 This is a top-down view of the double-leaf door panels when they are opened to 80°.

[0023] Figure 7 This is a diagram showing the door opener in the open state.

[0024] Figure 8 This is a schematic diagram showing the locked state of the door opener.

[0025] Figure 9 This is a schematic diagram of a ratchet mechanism.

[0026] Figure 10 This is the circuit diagram for the control circuit.

[0027] Marked in the image: 1. Connecting passage wall; 2. Door panel; 3. Second slide rail; 4. First slide rail; 5. Rotating shaft; 6. Guide rail; 7. Side slider; 8. Door opener; 9. Door closeer; 10. Rotating plate; 11. Door latch; 12. Fixed sawtooth block; 13. Rotating sawtooth block; 14. Slide bar; 15. Door opener slider; 16. Door opener slide rail; 17. Ratchet mechanism; 171. Ratchet; 172. Stop; 18. Door latch plug; 19. Socket; 20. Limiting hinge; 21. Door frame; 22. Door latch ring; 99. Dry contact. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0029] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0030] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0031] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0032] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0033] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0034] Example This embodiment provides a structure for a wind-pressure evacuation door in a self-balancing underground connecting passage.

[0035] Figure 1 This is a schematic diagram of the cross-section of a double-track tunnel with the evacuation doors closed. Figure 2 A schematic diagram of the cross-section of a double-track tunnel with the evacuation doors open; Figure 3 This is a front view diagram of the door panel when it is closed. Figure 4 This is a top-down view of the door panel when it is closed. Figure 5 A top-view diagram showing a single door panel opened at 45°. Figure 6 A top-view diagram showing the double-leaf door panels opened to 80°. Figure 7 A schematic diagram showing the door opener in the open state; Figure 8 This is a schematic diagram showing the locked state of the door opener. Figure 9 This is a schematic diagram of a ratchet mechanism; Figure 10 This is the circuit diagram for the control circuit.

[0036] like Figures 1 to 10 As shown, the torque self-balancing underground connecting passage wind pressure evacuation door structure of this embodiment includes a door panel 2 and a rotating shaft 5. The door panel 2 is installed in the connecting passage, the axial direction of the rotating shaft 5 is consistent with the height direction of the door panel 2, and the rotating shaft 5 is set at the middle position in the width direction of the door panel 2. The door panel 2 can rotate around the rotating shaft 5 to open or close the connecting passage.

[0037] This invention replaces the existing fire door hinges (or door pivots) located on the side with hinges located in the middle of the door panel 2. According to the lever principle, the wind pressure on one side of the door panel 2 can act on the door panels 2 on both sides of the pivot 5 simultaneously, so that the door panels 2 on both sides of the pivot 5 are balanced. Therefore, when the door panel 2 is pushed open from the other side, the wind pressure will not resist the opening force, allowing the door panel 2 to open smoothly, thereby opening the communication passage in time, reducing the safety hazards of evacuation, and achieving the same evacuation width as an ordinary swing door after opening, thus improving evacuation safety.

[0038] In this embodiment, the torque self-balancing underground connecting passage wind pressure evacuation door structure is installed in the connecting passage. When the evacuation door is in the closed state, the side of its door panel 2 can abut against the wall 1 of the connecting passage.

[0039] In this embodiment, a door frame 21 is provided above the door panel 2, and a first sliding groove 4 is provided on the door frame 21. The first sliding groove 4 is also provided on the ground below the door panel 2. The length direction of the first sliding groove 4 is perpendicular to the length direction of the connecting passage. The two ends of the rotating shaft 5 are respectively embedded in the first sliding groove 4, and the door panel 2 can slide along the first sliding groove 4 with the rotating shaft 5.

[0040] Optionally, a side slider 7 is provided on one side of the door panel 2, and a second slide groove 3 is provided on the side wall of the connecting passage. The length direction of the second slide groove 3 is consistent with the length direction of the connecting passage. The side slider 7 is embedded in the second slide groove 3, and the door panel 2 can slide simultaneously in the first slide groove 4 and the second slide groove 3 along with the rotating shaft 5. Of course, a guide rail 6 can also be provided in the second slide groove 3, and the side slider 7 can be connected with the guide rail 6. The side slider 7 can slide along the guide rail 6 in the second slide groove 3. That is to say, when the door panel 2 is switched from the closed state to the open state, the door panel 2 can slide along the wall 1 of the connecting passage to open while rotating along the rotating shaft 5.

[0041] In this embodiment, the torque self-balancing underground connecting passage wind pressure evacuation door structure also includes a door opener 8. The door opener 8 includes a latch 11 disposed in the door panel 2. An insertion hole 19 is also provided on the side wall of the connecting passage. The insertion hole 19 corresponds to the first sliding groove 4 and the second sliding groove 3 respectively. The latch 11 can be inserted into the insertion hole 19 to lock the door panel 2 after the door panel 2 is closed or opened. Specifically, one end of the latch 11 that is inserted into the insertion hole 19 is a latch plug 18, which can be inserted into the insertion hole 19 to lock. When the door panel 2 is in the closed state, the latch plug 18 can be inserted into the insertion hole 19 corresponding to the first sliding groove 4 to lock. When the door panel 2 is in the open state, the latch plug 18 can be inserted into the insertion hole 19 corresponding to the second sliding groove 3 to lock.

[0042] In this embodiment, the door opener 8 also includes a rotating plate 10 and a telescopic assembly. The rotating plate 10 is connected to one side of the door latch 11, and the telescopic assembly is disposed in the door panel 2 and connected to the tail end of the door latch 11. Pressing the rotating plate 10 can drive the door latch 11 to rotate and cause the door latch 11 to extend or retract under the action of the telescopic assembly.

[0043] Optionally, the telescopic assembly includes a fixed serrated block 12 and a rotating serrated block 13 that cooperate with each other. The rotating serrated block 13 is connected to the latch 11 and can rotate relative to the fixed serrated block 12, thereby causing the latch 11 to extend or retract. Specifically, the rotating plate 10 is provided with a door opener slider 15, and the latch 11 is provided with a door opener slide rail 16. The door opener slider 15 is embedded in the door opener slide rail 16. When the rotating plate 10 is pressed, the door opener slider 15 can slide along the door opener slide rail 16, and under the action of the cooperation between the fixed serrated block 12 and the rotating serrated block 13, it can drive the latch 11 to rotate and move axially, causing the latch plug 18 to exit the socket 19. This unlocks the door panel 2. The rotating sawtooth block 13 can only rotate in one direction relative to the fixed sawtooth block 12, and the fixed sawtooth block 12 has a slide bar 14 in the groove. During the rotation of the rotating sawtooth block 13, the slide bar 14 can slide in the groove on the fixed sawtooth block 12. When the slide bar 14 abuts against the sawtooth step of the rotating sawtooth block 13, the rotating sawtooth block 13 is in the pushed-out state, that is, the latch plug 18 is in the locked state of being inserted into the socket 19. When the rotating sawtooth block 13 rotates so that the slide bar 14 is inserted into the groove on the rotating sawtooth block 13, the rotating sawtooth block 13 is in the retracted state, that is, the latch plug 18 is out of the socket 19 and is in the unlocked state.

[0044] Optionally, the rotating plate 10 is also provided with a limiting hinge 20, one end of which is connected to the door panel 2 and the other end is connected to the rotating plate 10. The limiting hinge 20 can limit the downward pressing stroke of the rotating plate 10. When the rotating plate 10 is pressed to the lowest point, the limiting hinge 20 can pull the rotating plate 10 to prevent it from pressing down further.

[0045] Optionally, the rotating sawtooth block 13 is connected to the latch 11 via a ratchet mechanism 17. The ratchet mechanism 17 includes a ratchet 171 disposed inside the rotating sawtooth block 13 and multiple stops 172 disposed on the latch 11. The stops 172 are rotatably connected to the latch 11. The cooperative connection between the ratchet 171 and the multiple stops 172 allows the latch 11 to drive the rotating sawtooth block 13 to rotate, while the rotation of the rotating sawtooth block 13 cannot drive the latch 11 to rotate. Figure 9 As shown, when the latch 11 rotates clockwise, the stop block 172 can drive the ratchet 171 and the rotating sawtooth block 13 to rotate clockwise together; when the ratchet 171 and the rotating sawtooth block 13 rotate clockwise, the stop block 172 is pressed under the action of the ratchet 171's saw teeth and rotates relative to the latch 11 around the connection point between the stop block 172 and the latch 11, while the latch 11 remains fixed.

[0046] In this embodiment, the evacuation door can be composed of two door panels 2 with the same structure but opening to different evacuation directions. The door panel 2 has a cover plate near the center edge of the evacuation passage.

[0047] The door opener 8 is horizontally mounted on the door panel 2. When the rotating plate 10 is pressed, the door opener slider 15 moves along the door opener slide rail 16, which in turn moves the door latch 11 and the rotating sawtooth block 13. When the boss of the rotating sawtooth block 13 moves past the limit of the slide bar 14, the ratchet 171 drives the rotating sawtooth block 13 to rotate in one direction. When the door opener slider 15 reaches the limit, the rotating plate 10 and the door opener slider 15 return, which drives the door latch 11 and the rotating sawtooth block 13 to move in the opposite direction. The ratchet 171 releases the rotating sawtooth block 13 and rotates in the opposite direction. At this time, the rotating sawtooth block 13 and the fixed sawtooth block 12 are coupled and locked in the slide groove on the fixed sawtooth block 12 by the slide bar 14. The door latch plug 18 exits the socket 19, and the evacuating personnel push the sliding door panel 2 against the wall of the evacuation passage to open the door panel 2 in the evacuation direction. When the evacuation door needs to be closed, evacuees push the sliding door panel 2 back to the closed state, and the cover plates of the two evacuation door panels 2 cover each other. At this time, the rotating plate 10 is pressed, and the door opener slider 15 moves along the door opener slide rail 16, which drives the door latch 11 and the rotating sawtooth block 13 to move. When the rotating sawtooth block 13 disengages from the slide bar 14, the ratchet 171 drives the rotating sawtooth block 13 to rotate in one direction. When the door opener slider 15 reaches the limit, the rotating plate 10 and the door opener slider 15 return, which drives the door latch 11 and the rotating sawtooth block 13 to move in the opposite direction along the rotating shaft 5. The ratchet 171 releases the rotating sawtooth block 13 and rotates in the opposite direction. When the slide bar 14 locks the boss of the rotating sawtooth block 13, the door latch plug 18 returns to the socket 19, and the door panel 2 is locked.

[0048] When the door panel 2 is opened, the pivot 5 moves along the first slide groove 4, and the door panel 2 and the side slider 7 slide in the opposite evacuation direction, so that the door panel 2 is close to the connecting passage wall 1 and is in the open state.

[0049] When the door panel 2 is closed, the pivot 5 moves along the first slide groove 4, and the door panel 2 and the side slider 7 slide along the evacuation direction, so that the door panel 2 is perpendicular to the connecting passage wall 1 and is in the closed state.

[0050] When no one is passing through, the door closer 9 can push the door panel 2 from the open state back to the closed state. At this time, the door latch plug 18 is reset into the socket 19, the door panel 2 is locked, and the cover plates of the two evacuation door panels 2 cover each other.

[0051] The advantages of this invention are: when the door panel 2 is under wind pressure, the force-bearing areas on both sides of the central pivot 5 of the door panel 2 are equal, thus eliminating the torque of the door panel 2 caused by wind pressure. At this time, the door panel 2 is effectively closed due to the locking of the door opener 8, and will not automatically open due to the failure of the evacuation door locking mechanism caused by the long-term action of pulsating wind pressure. When the evacuation door needs to be opened, the presence of the central pivot 5 of the door panel 2 causes the wind pressure to form an opening torque on the door panel 2, making it easy for personnel to manually open the evacuation door panel 2, thereby improving the opening efficiency of the evacuation door.

[0052] The torque self-balancing underground connecting passage wind pressure evacuation door structure also includes a door closer 9. The door closer 9 includes a first electromagnetic plate and a second electromagnetic plate (not shown in the figure) that are respectively set. The first electromagnetic plate is set on the door panel 2, and the second electromagnetic plate is set on the door frame 21. The first electromagnetic plate and the second electromagnetic plate can attract each other after being energized to lock the door panel 2.

[0053] In this embodiment, a control circuit is connected between the door opener 8 and the door closer 9. When the rotating plate 10 is turned on, the door closer 9 can be de-energized through the control circuit to release the door plate 2 from locking.

[0054] In this embodiment, a time relay is connected in the control circuit. The time relay can control the power-off time of the door closer 9. For example, the power-off time of the door closer 9 can be set to 10s by the time relay. That is, after pressing the rotating plate 10 to de-energize the door closer 9, the door panel 2 can be opened. After 10s, the door closer 9 is automatically energized and the door panel 2 is closed. The door closer 9 can automatically lock the door panel 2. Of course, the power-off time of the door closer 9 can be arbitrarily set by the time relay, and is not limited to 10s. This invention does not make a specific limitation on this.

[0055] The latch plug 18 is inserted into the latch ring 22, and dry contact points 99 are provided on both the latch plug 18 and the latch ring 22.

[0056] Combination Figures 1 to 9 ,as well as Figure 10 The circuit diagram illustrates the principle by which the control circuit controls the power supply to and from the door closer 9. Action requirements: ① Normal state: Door closer 9 is energized; ② Press the rotating plate 10 once, and the door latch plug 18 will be disengaged from the socket 19, causing the two dry contacts 99 on the door latch plug 18 and the door latch ring 22 to come into contact, and the door closer 9 will be de-energized for a moment; after a set time (which can be modified, such as 10 seconds), the door closer 9 will be energized again.

[0057] ③ After the first press of the rotating plate 10, regardless of whether the 10-second set time has elapsed, if the rotating plate 10 is pressed a second time, the two dry contacts 99 on the latch plug 18 and in the latch ring 22 will make contact again, the door closer 9 will immediately lose power, and then regain power after the set time (such as 10 seconds) as described above.

[0058] Implementation method: ① Under normal operating conditions: Since the time relay is a normally closed contact, the door closer 9 is normally energized. The energized door closer 9 can be controlled to open and close the evacuation door remotely or on-site.

[0059] ②Under abnormal operating conditions: When evacuating personnel press the rotating plate 10 once, the two dry contacts 99 on the latch plug 18 and the latch ring 22 will contact, that is, the normally open SB1 will be pressed, and the circuit 1 will be connected momentarily. After KA2 is energized, the circuit 1 will be self-locked and connected due to the closure of KA1. At the same time, the time relay will be energized, causing the normally closed contact of the time relay in the circuit 2 to open immediately, and the door closer 9 will be de-energized. After a set time, such as 30 seconds, the time relay will act a second time to make the normally closed contact of the time relay in the circuit 2 close again, and the door closer 9 will automatically be re-energized.

[0060] ③ After pressing the rotating plate 10 for the first time, regardless of whether the 30-second set time has elapsed, if the rotating plate 10 is pressed a second time, the two dry contacts 99 on the latch plug 18 and the latch ring 22 will make contact again. Because the normally closed button SB2 will be released once at this time, the door closer 9 will immediately lose power due to the disconnection of the time relay, and then regain power after the set time (such as 30 seconds) as described above.

[0061] In summary, this invention provides a torque-self-balancing underground connecting passage wind pressure-resistant evacuation door structure. By changing the hinge (or door pivot) of the existing fire door, which is located on the side, to be located in the middle of the door panel, according to the lever principle, the wind pressure on one side of the door panel can act on the door panels on both sides of the pivot simultaneously, so that the door panels on both sides of the pivot are balanced. Therefore, when the door panel is pushed open from the other side, the wind pressure will not resist the opening force, allowing the door panel to open smoothly, thereby opening the connecting passage in a timely manner, reducing the safety hazards of evacuation, and improving evacuation safety.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A torque-self-balancing underground connecting passage wind pressure-resistant evacuation door structure, characterized in that, Includes a door panel (2) and a pivot (5). The door panel (2) is installed in the communication channel. The axis of the pivot (5) is consistent with the height direction of the door panel (2). The pivot (5) is located at the middle position in the width direction of the door panel (2). The door panel (2) can rotate around the pivot (5) to open or close the communication channel. A door frame (21) is provided above the door panel (2), a first sliding groove (4) is provided on the door frame (21), a side slider (7) is provided on one side of the door panel (2), and a second sliding groove (3) is provided on the side wall of the communication channel. It also includes a door opener (8), which includes a door latch (11) provided in the door panel (2). The side wall of the communication channel is also provided with a socket (19), which corresponds to the first slide groove (4) and the second slide groove (3) respectively. The door latch (11) can be inserted into the socket (19) to lock the door panel (2) after the door panel (2) is closed or opened. The door opener (8) also includes a rotating plate (10) and a telescopic assembly. The rotating plate (10) is connected to one side of the door latch (11), and the telescopic assembly is disposed in the door panel (2) and connected to the tail end of the door latch (11). Pressing the rotating plate (10) can drive the door latch (11) to rotate and cause the door latch (11) to extend and retract under the action of the telescopic assembly. The telescopic assembly includes a fixed sawtooth block (12) and a rotating sawtooth block (13) that cooperate with each other. The rotating sawtooth block (13) is connected to the latch (11). The rotating sawtooth block (13) can rotate relative to the fixed sawtooth block (12) and drive the latch (11) to extend and retract. The rotating sawtooth block (13) is connected to the latch (11) via a ratchet mechanism (17); It also includes a door closer (9), which includes a first electromagnetic plate and a second electromagnetic plate respectively. The first electromagnetic plate is disposed on the door panel (2), and the second electromagnetic plate is disposed on the door frame (21). The first electromagnetic plate and the second electromagnetic plate can attract each other after being energized to lock the door panel (2). A control circuit is connected between the door opener (8) and the door closer (9). When the rotating plate (10) is pressed, the door closer (9) can be de-energized through the control circuit to release the lock of the door plate (2).

2. The torque-self-balancing underground connecting passage wind pressure-resistant evacuation door structure according to claim 1, characterized in that, The first slide groove (4) is also formed on the ground below the door panel (2). The length direction of the first slide groove (4) is perpendicular to the length direction of the connecting passage. The two ends of the rotating shaft (5) are respectively embedded in the first slide groove (4). The door panel (2) can slide along the first slide groove (4) with the rotating shaft (5).

3. The torque-self-balancing underground connecting passage wind pressure-resistant evacuation door structure according to claim 1, characterized in that, The length direction of the second slide groove (3) is consistent with the length direction of the communication channel. The side slider (7) is embedded in the second slide groove (3). The door panel (2) can slide in the first slide groove (4) and the second slide groove (3) simultaneously with the rotating shaft (5) and the side slider (7).

4. The torque-self-balancing underground connecting passage wind pressure-resistant evacuation door structure according to claim 1, characterized in that, The control circuit is connected to a time relay, which can control the power-off and delayed power-on of the door closer (9). The delay control time of the time relay can be adjusted and set.

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