Evacuation door opening and closing control method

Abstract

The present application relates to the technical field of evacuation door, more particularly to an evacuation door opening and closing control method, comprising S1: initially starting a handle on an emergency switch for locking an evacuation door, and sending a request opening door signal to a control console; S2: the request opening door information is confirmed and allowed by an operator in an operating room of the control console; S3: receiving the allowing signal of the operating room, and starting the handle on the emergency switch again, so that the emergency switch removes the starting restriction on the evacuation door; S4: the operating room simultaneously transmits a signal to another door leaf electronic lock for restricting the starting of the evacuation door, and the door leaf electronic lock removes the starting restriction on the evacuation door after receiving the information of the operating room; S5: the evacuation door is gradually opened; and S6: a ramp ladder is lowered. The evacuation door is locked by double locking devices, so that the probability of the evacuation door being opened by mistake is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of evacuation door technology, and more specifically to a method for controlling the opening and closing of evacuation doors. Background Technology

[0002] Escape doors are used for passenger evacuation in emergency situations on trains. While the train is in motion, escape doors must remain closed. On subway and similar equipment, escape doors are typically restricted to open and close using emergency switches. Operators can directly unlock the emergency switch used to lock the escape door from the escape door control system; once unlocked, the escape door opens automatically. Because escape doors are only locked via emergency switches, sometimes improper operation by the operator can cause the doors to open accidentally.

[0003] The prior art CN201310515135.7 discloses an outward swing and upward tilting device and method for an emergency evacuation door. During operation, connecting rods A and B drive the door frame to swing outward through the door hinge seat. In the initial stage of the movement, when the rotation of connecting rod A is within 30°, the swing is mainly an outward movement with a distance greater than 70mm, accompanied by a rotation amplitude of less than 10°. When connecting rod B is aligned with the axis of the door frame hinge seat and the hinge seat, the outward swing of the door as the main motion state changes to an upward tilting motion of the door as the main motion state, until the door rotates to the open and close position. At this time, the upper edge of the door forms a gap of more than 20mm with the shape of the vehicle front, avoiding interference between the two.

[0004] The emergency evacuation door outward swing-up device used in the above method comprises: a door frame hinge seat fixed on the door frame of the subway emergency evacuation door, the door frame hinge seat being hinged to connecting rod A and connecting rod B respectively, and a door hinge seat fixed on the door body frame of the subway emergency evacuation door being hinged to connecting rod A and connecting rod B respectively, the connecting rod A being located on one side of the door frame of the subway emergency evacuation door.

[0005] The door frame hinge is mounted on the transition connecting plate, which is connected to the door frame. When the door is closed, the transition connecting plate, the door frame, and the door body frame are sealed together by a sealing strip. The door body frame is connected to the door hinge and the door body frame is connected to the glass cover. The transition connecting plate is connected to the front steel structure and the front steel structure is connected to the fiberglass head seat.

[0006] The existing technology only discloses the opening of the evacuation door through linkage A and linkage B, but it does not solve the technical problem that the evacuation door is easily opened by mistake. Summary of the Invention

[0007] The technical problem solved by this invention is to overcome the defects in the prior art and provide a method for controlling the opening and closing of evacuation doors that are not easily opened by mistake.

[0008] The objective of this invention is achieved through the following technical solution:

[0009] A method for controlling the opening and closing of an evacuation door is disclosed. The method involves releasing the evacuation door's opening restriction via an emergency switch. The emergency switch includes a base, a door panel connected to the base, a handle located inside the base, a limiting cam mechanism with one end connected to the handle and passing through the inner wall of the base, a request limit switch and an unlock limit switch fixed to the rear of the base, and a limiting electromagnetic lock located behind the base. The limiting cam mechanism includes a cam that is connected to the handle and passes through the inner wall of the base. The evacuation door opening and closing control method specifically includes the following steps:

[0010] S1: When the handle on the emergency switch used to lock the evacuation door is activated for the first time, the handle drives the contact surface on the limit cam mechanism to rotate until it contacts the request limit switch. Then, the request limit switch sends a request to open the door signal to the control panel.

[0011] S2: After the door opening signal is confirmed and permitted by the operator in the driver's control room, request the limit switch to release the rotation restriction on contact surface one;

[0012] S3: Upon receiving the permission signal from the control room, the handle on the emergency switch is activated again. The handle drives the contact surface two on the limit cam mechanism to rotate until it contacts the unlocking limit switch, and then the emergency switch releases the restriction on the evacuation door.

[0013] S4: The control room simultaneously transmits a signal to another door electronic lock used to restrict the opening of the evacuation door. After receiving the information from the control room, the door electronic lock releases the restriction on the opening of the evacuation door.

[0014] S5: The evacuation doors gradually open;

[0015] S6: Lower the ramp ladder;

[0016] S7: When the evacuation door is closed, the following steps are performed: Manually press the ramp clutch push rod self-reset button, the ramp clutch push rod starts to advance, and then the first recovery motor recovers the ramp through the ramp rope; manually lock the ramp electronic lock; manually press the door leaf recovery clutch self-reset button, the second recovery motor recovers the door leaf through the door leaf rope, and finally manually lock the door leaf electronic lock.

[0017] Preferably, in step S1, the emergency switch is activated by manually pulling the handle on the emergency switch and adjusting it to 20° so that the contact surface on the first cam just contacts the request limit switch. The request limit switch sends a request to open the limit electromagnetic lock to the driver's console. When the handle is adjusted to the 20° trigger signal position, observe whether the indicator light on the emergency switch is flashing.

[0018] Preferably, in step S3, restarting the emergency switch involves manually adjusting the handle on the emergency switch to 90° so that the second contact surface on the first cam just contacts the unlocking limit switch, and the unlocking limit switch sends an unlocking signal to the electronic lock of the evacuation door to unlock it.

[0019] Preferably, when the handle is adjusted to the 90° trigger signal position, observe whether the indicator light on the emergency switch is constantly lit.

[0020] Preferably, step S4 further includes the simultaneous opening of the electronic locks on both sides of the evacuation door after the door electronic lock is unlocked.

[0021] Preferably, step S5 includes an electric push rod pushing the evacuation door to 2 / 3 of its opening stroke, and then gas springs on both sides of the evacuation door pushing the evacuation door to the fully opened state.

[0022] Preferably, step S6 further includes

[0023] S60: After the ramp ladder is lowered, the electric push rod automatically retracts, completing the automatic retraction of the electric push rod.

[0024] Preferably, the evacuation door opening and closing control method further includes manually opening the mechanical trigger switch on the emergency switch when the emergency switch is de-energized and the handle malfunctions, thereby transmitting a request to open the door signal to the evacuation door system.

[0025] Preferably, the evacuation door system is also equipped with an intermediate relay. When the evacuation door and ramp ladder are interrupted due to power failure during opening or retraction, the evacuation door and ramp ladder will continue to operate in their original state after power is restored, without the need for reset and restart.

[0026] Preferably, S7 specifically includes the following method:

[0027] S70: Manually press the ramp clutch push rod self-reset button. When the controller receives the ramp clutch push rod self-reset button signal, the ramp clutch push rod will start to advance.

[0028] S71: When the ramp clutch push rod is detected to be extended to the position, the first recovery motor starts to work. The first recovery motor recovers the ramp through the ramp rope. When the ramp is detected to be back in position, press the recovery button again and the first recovery motor will stop working.

[0029] S72: Manually lock the electronic locks on both sides of the ramp. When the controller detects the left ramp locking signal and the right ramp locking signal, the ramp clutch push rod automatically retracts, resetting the ramp clutch push rod. After detecting the retraction signal, the action stops.

[0030] S73: Manually press the door retraction clutch self-reset button. When the controller receives the door retraction clutch self-reset button signal, the door clutch push rod begins to advance.

[0031] S74: When the door leaf retraction clutch is detected to be extended, the second retraction motor starts to work. The second retraction motor retracts the door leaf through the door leaf rope. When the door leaf is detected to be returned to the position, press the retraction button again, and the second retraction motor will stop working.

[0032] S75: Manually lock the electronic locks on both sides of the door leaf; when the controller detects the left door leaf lock-in signal and the right door leaf lock-in signal, the door leaf clutch push rod automatically retracts, resets the door leaf clutch push rod, and stops operating after detecting the retraction signal.

[0033] The evacuation door opening and closing control method of the present invention first requires manual operation of the emergency switch to send an opening request. After the operator in the control room confirms, the emergency switch is operated again to release the emergency switch, thereby releasing the electronic lock of the door from the control of the evacuation door. Then the electronic locks on both sides of the door will also release the restriction on the door, and finally the evacuation door opens.

[0034] Compared with existing technologies, it has the following beneficial effects:

[0035] 1) The evacuation door is locked by a double locking device, which greatly reduces the probability of the evacuation door being opened by mistake.

[0036] 2) Once the request to open the door is granted, the door can be opened automatically via an electric push rod and a pneumatic spring without the need for manual pushing.

[0037] 3) In the event of a power failure of the emergency switch, personnel can manually trigger the switch by controlling the mechanical system to send a request to open the door, ensuring that the emergency evacuation device can send a request to open the door regardless of the situation.

[0038] 4) By setting up intermediate relays, if the evacuation doors and ramps are interrupted due to a sudden accident during the opening or retraction process, the evacuation doors and ramps will continue to operate in their original state after normal operation is restored, without the need for reset and restart, thereby greatly improving the opening efficiency of the evacuation doors. Attached Figure Description

[0039] Figure 1 This is a flowchart illustrating an evacuation door opening and closing control method according to the present invention.

[0040] Figure 2 This is a schematic diagram of the emergency switch in an evacuation door opening and closing control method of the present invention;

[0041] Figure 3 This is a three-dimensional schematic diagram of an emergency switch in an evacuation door opening and closing control method of the present invention;

[0042] Figure 4 This is a rear view of the emergency switch in an evacuation door opening and closing control method of the present invention;

[0043] Figure 5 This is a side cross-sectional view of an evacuation door opening and closing control method according to the present invention;

[0044] Figure 6 This is a schematic diagram of the buckle and cam structure in the evacuation door opening and closing control method of the present invention;

[0045] Figure 7 This is a schematic diagram of the limit switch and limit cam mechanism in the evacuation door opening and closing control method of the present invention;

[0046] Figure 8 This is a detailed flowchart of step S7 in the evacuation door opening and closing control method of the present invention;

[0047] Figure 9 This is a schematic diagram of an evacuation door in the exit state during an evacuation door opening and closing control method according to the present invention. Detailed Implementation

[0048] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application; however, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise explicitly specified and limited, "on" or "below" a second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0049] Example 1

[0050] like Figure 1As shown, a method for controlling the opening and closing of an evacuation door is disclosed. The method involves releasing the evacuation door's opening restriction via an emergency switch. The emergency switch includes a base 1, a door panel 2 connected to the base 1, a handle 3 located inside the base 1, a limiting cam mechanism with one end connected to the handle 3 and passing through the inner wall of the base 1, a request limit switch 5 and an unlocking limit switch 6 fixed to the rear of the base 1, and a limiting electromagnetic lock 7 located behind the base 1. The limiting cam mechanism includes a cam 8 with one end connected to the handle 3 and passing through the inner wall of the base 1. The specific method for controlling the opening and closing of the evacuation door includes the following steps:

[0051] S1: When the handle on the emergency switch used to lock the evacuation door is activated for the first time, the handle drives the contact surface on the limit cam mechanism to rotate until it contacts the request limit switch. Then, the request limit switch sends a request to open the door signal to the control panel.

[0052] S2: After the door opening signal is confirmed and permitted by the operator in the driver's control room, request the limit switch to release the rotation restriction on contact surface one;

[0053] S3: Upon receiving the permission signal from the control room, the handle on the emergency switch is activated again. The handle drives the contact surface two on the limit cam mechanism to rotate until it contacts the unlocking limit switch, and then the emergency switch releases the restriction on the evacuation door.

[0054] S4: The control room simultaneously transmits a signal to another door electronic lock used to restrict the opening of the evacuation door. After receiving the information from the control room, the door electronic lock releases the restriction on the opening of the evacuation door.

[0055] S5: The evacuation doors gradually open;

[0056] S6: Lower the ramp ladder;

[0057] S7: When the evacuation door is closed, the following steps are performed: Manually press the ramp clutch push rod self-reset button, the ramp clutch push rod starts to advance, and then the first recovery motor recovers the ramp through the ramp rope; manually lock the ramp electronic lock; manually press the door leaf recovery clutch self-reset button, the second recovery motor recovers the door leaf through the door leaf rope, and finally manually lock the door leaf electronic lock.

[0058] Conventional emergency switches use an electrical actuator with only one trigger signal. In this embodiment, an improved emergency switch is used, which enables the electrical actuator to have two trigger signals. The emergency switch includes a base 1, a door panel 2 connected to the base 1, a handle 3 located inside the base 1, a limiting cam mechanism 4 with one end connected to the handle 3 and passing through the inner wall of the base 1, a request limit switch 5 and an unlock limit switch 6 fixed to the back of the base 1, and a limiting electromagnetic lock 7 located at the back of the base 1.

[0059] One side of the door panel 2 is hinged to the base 1 via pivot 11, and the handle 3 is hinged to the base 1 via pivot 2 12.

[0060] A square-hole lock 13 is provided on the door panel 2 and the base 1.

[0061] The limiting cam mechanism includes a cam 8 connected to the handle 3 at one end and passing through the inner wall of the seat 1. The cam 8 has two contact surfaces 801 and 802 with different arc lengths, which are arranged left and right. The contact surface 801 is above the contact surface 802. The arc lengths of the contact surfaces 801 and 802 correspond to the rotation angle of the cam 8. The contact surface 801 is directly below the request limit switch 5 and can contact it. The contact surface 802 is directly below the unlock limit switch 6 and can contact it.

[0062] Pulling handle 3 causes cam 8 connected to it to rotate. As cam 8 rotates, request limit switch 5 first contacts contact surface 801. Once request limit switch 5 is fully in contact with contact surface 801, a contact signal is triggered and sent to the driver's console. Under the restriction of request limit switch 5, handle 3 cannot continue to rotate cam 8. Handle 3 can only continue rotating cam 8 after the driver's console releases the restriction of request limit switch 5, allowing contact surface 802 on cam 8 to contact unlocking limit switch 6. Only after contact surface 802 is fully in contact with unlocking limit switch 6 can the emergency switch release the restriction on the evacuation door.

[0063] Request that limit switch 5 be connected to the driver's console signal, request that limit switch 5 be connected to the indicator light, and request that the indicator light flash when limit switch 5 is triggered. The driver's console is connected to the electromagnetic lock signal, and the unlocking limit switch 6 is connected to the electronic lock signal of the evacuation door leaf.

[0064] Before the electromagnetic lock is unlocked, handle 3 can only rotate clockwise within 0-30°. When handle 3 is pulled down clockwise by 0-30°, cam 8 rotates counterclockwise by 0°-30°, and contact surface 801 contacts request limit switch 5. Request limit switch 5 sends a signal to the control panel requesting the opening of the limit electromagnetic lock 7's locking pin 701. After the control panel agrees to the request, it remotely opens the electromagnetic lock 7 and de-energizes it. At this time, the electromagnetic lock 7 releases the limit on cam 8 and handle 3, and handle 3 can continue to be pulled clockwise. When handle 3 is between 30° and 45°, cam 8 rotates counterclockwise by 30°-45°. At this time, request limit switch 5 and unlocking limit switch 6 are not in contact with the contact surface, and the contact of request limit switch 5 returns to its initial state. When handle 3 is between 45° and 90°, cam 8 rotates counterclockwise by 45°-90°, and contact surface 802 continuously contacts unlocking limit switch 6. Unlocking limit switch 6 sends an unlocking signal to the electronic lock of the evacuation door to unlock it.

[0065] The limiting cam mechanism also includes a second cam 9 connected to the handle 3 at one end and passing through the inner wall of the seat 1, and a buckle 10 located above the second cam 9. The second cam 9 has a first slot 901 at one end near the handle 3 and a second slot 902 at the other end. The buckle 10 can be engaged in the first slot 901 or the second slot 902 for limiting the handle 3 to the minimum closing angle and the maximum opening angle.

[0066] When the limit electromagnetic lock 7 loses power, the locking pin 701 opens and retracts. The side of the cam-8 is provided with a limit groove 803. The locking pin 701 of the limit electromagnetic lock 7 is inserted into the limit groove 803 to limit the rotation angle of the cam-8. The rotation angle of the cam-8 can be limited to within 40°.

[0067] When the evacuation door needs to be opened while the power is on, the emergency switch is first manually activated. This rotates the contact surface 801 on the limit cam mechanism via handle 3 until it contacts the request limit switch 5. The request limit switch 5 then sends an opening request signal to the control panel (evacuation door system). The operator in the control room can receive this signal via a PC. After confirming the opening request, the operator can directly issue permission to open the door on the PC connected to the evacuation door system. Once the operator's permission is received, the request limit switch 5 releases the restriction on contact surface 801, i.e., cam 1. Then, the handle 3 on the emergency switch is manually pulled again until contact surface 2 contacts the release limit switch 6. This activates the electrical driver on the emergency switch, triggering the second trigger signal on handle 3, thereby releasing the emergency switch's restriction on the evacuation door's opening. Simultaneously, to enhance the evacuation door's opening restriction level and improve opening safety, an electronic door lock is also installed to restrict the evacuation door's opening. Once the emergency switch releases the restriction on the evacuation door's opening, the first electromagnetic lock also releases its locking control on the evacuation door. Finally, the evacuation door gradually opens under the pushing action of other devices. After the evacuation door is fully open, the ramp ladder is lowered. This allows occupants to exit the vehicle via the ramp ladder.

[0068] Therefore, opening an evacuation door involves manually triggering the handle to request opening, followed by operator confirmation and permission, and then manually triggering the handle again to release the emergency switch's restriction on the evacuation door. Simultaneously, the electronic lock on the door will only release its restriction after the emergency switch has released it. Opening and closing the evacuation door requires two manual operations of the emergency switch and operator confirmation to achieve final opening. Any error or omission in any step will prevent opening, greatly ensuring the accuracy of the evacuation door's opening and preventing easy opening due to misoperation.

[0069] Meanwhile, the evacuation door system is also equipped with an intermediate relay. When the evacuation door and ramp ladder are interrupted due to power failure during opening or retraction, the evacuation door and ramp ladder will continue to operate in the original state after power is restored, without the need for reset and restart, thus greatly improving the opening efficiency of the evacuation door.

[0070] In this embodiment, S7 specifically includes the following methods:

[0071] S70: Manually press the ramp clutch push rod self-reset button. When the controller receives the ramp clutch push rod self-reset button signal, the ramp clutch push rod will start to advance.

[0072] S71: When the ramp clutch push rod is detected to be extended to the position, the first recovery motor starts to work. The first recovery motor recovers the ramp through the ramp rope 30. When the ramp is detected to be back in position, press the recovery button again and the first recovery motor will stop working.

[0073] S72: Manually lock the electronic locks on both sides of the ramp. When the controller detects the left ramp locking signal and the right ramp locking signal, the ramp clutch push rod automatically retracts, resetting the ramp clutch push rod. After detecting the retraction signal, the action stops.

[0074] S73: Manually press the door retraction clutch self-reset button. When the controller receives the door retraction clutch self-reset button signal, the door clutch push rod begins to advance.

[0075] S74: When the door leaf retraction clutch is detected to be extended, the second retraction motor starts to work. The second retraction motor retracts the door leaf through the door leaf rope 40. When the door leaf is detected to be returned to the position, press the retraction button again, and the second retraction motor will stop working.

[0076] S75: Manually lock the electronic locks on both sides of the door. When the controller detects the left door lock signal and the right door lock signal, the door clutch push rod automatically retracts, resetting the door clutch push rod. After detecting the retraction signal, the action stops.

[0077] Using the above method, the evacuation door can be automatically closed simply by pressing the reset buttons of the ramp clutch and the door leaf clutch. Furthermore, during the closing process, the evacuation door will automatically detect whether each closing action has been completed, thus ensuring that the evacuation door is fully locked after closing.

[0078] Example 2

[0079] A method for controlling the opening and closing of an evacuation door is disclosed. The method involves releasing the evacuation door's opening restriction via an emergency switch. The emergency switch includes a base 1, a door panel 2 connected to the base 1, a handle 3 located inside the base 1, a limiting cam mechanism with one end connected to the handle 3 and passing through the inner wall of the base 1, a request limit switch 5 and an unlocking limit switch 6 fixed to the rear of the base 1, and a limiting electromagnetic lock 7 located behind the base 1. The limiting cam mechanism includes a cam 8 with one end connected to the handle 3 and passing through the inner wall of the base 1. The specific method for controlling the opening and closing of the evacuation door includes the following steps:

[0080] S1: When the handle on the emergency switch used to lock the evacuation door is activated for the first time, the handle drives the contact surface on the limit cam mechanism to rotate until it contacts the request limit switch. Then, the request limit switch sends a request to open the door signal to the control panel.

[0081] S2: After the door opening signal is confirmed and permitted by the operator in the driver's control room, request the limit switch to release the rotation restriction on contact surface one;

[0082] S3: Upon receiving the permission signal from the control room, the handle on the emergency switch is activated again. The handle drives the contact surface two on the limit cam mechanism to rotate until it contacts the unlocking limit switch, and then the emergency switch releases the restriction on the evacuation door.

[0083] S4: The control room simultaneously transmits a signal to another door electronic lock used to restrict the opening of the evacuation door. After receiving the information from the control room, the door electronic lock releases the restriction on the opening of the evacuation door.

[0084] S5: The evacuation doors gradually open;

[0085] S6: Lower the ramp ladder;

[0086] S7: When the evacuation door is closed, the following steps are performed: Manually press the ramp clutch push rod self-reset button, the ramp clutch push rod starts to advance, and then the first recovery motor recovers the ramp through the ramp rope; manually lock the ramp electronic lock; manually press the door leaf recovery clutch self-reset button, the second recovery motor recovers the door leaf through the door leaf rope, and finally manually lock the door leaf electronic lock.

[0087] The difference between this embodiment and Embodiment 1 is that the handle is configured with two trigger signals: a 20° trigger signal and a 90° trigger signal. The 20° trigger signal is a request to open the door, and the 90° trigger signal is a signal to release the emergency switch from unlocking the evacuation door. Therefore, the initial activation of the emergency switch involves manually adjusting the handle to the 20° trigger signal position to trigger the request to open the door. When the request to open the door is triggered, the indicator light on the emergency release device flashes continuously to allow personnel to confirm whether the emergency switch is working properly and whether a normal door opening request signal has been triggered. After receiving the operator's signal to open the door, the emergency switch is activated again by manually adjusting the handle to the 90° trigger signal position to release the emergency switch from restricting the evacuation door. When the restriction is released, the indicator light on the emergency switch remains constantly lit to allow personnel to confirm whether the emergency switch has unlocked the evacuation door.

[0088] Electronic locks for securing the evacuation door are installed on both sides. The method to unlock the evacuation door by removing the electronic locks on the door is as follows: after the emergency switch releases the restriction on the evacuation door, the first electromagnetic lock unlocks, and simultaneously the electronic locks on both sides of the evacuation door also unlock. Only after all the electronic locks on the door and both sides of the evacuation door are unlocked can the evacuation door be opened.

[0089] The evacuation door's opening and closing process, driven by the actuator, mainly involves an electric push rod that opens the door to two-thirds of its opening stroke. Then, gas springs on both sides of the door push it to its fully open position. This combination of electric push rod and gas springs eliminates the need for manual pushing, achieving automatic door opening. Once the ramp ladder has been lowered, the electric push rod automatically retracts, enabling automatic retraction.

[0090] Example 3

[0091] The difference between this embodiment and the previous embodiment is that when the handle on the emergency switch malfunctions or the emergency switch is in a power-off state, personnel can instead activate the mechanical trigger switch on the emergency switch to send a request to open the door. After the operator in the control room confirms the request to open the door, the door's electronic lock and the second electronic lock will open simultaneously. The electric push rod and the gas spring will push the rods in sequence to open the evacuation door. Once the evacuation door is fully open, the ramp will lower, completing the entire door opening control process.

[0092] Obviously, the above embodiments are merely examples to clearly illustrate the technical solutions of the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method of opening and closing control of an evacuation door, characterized by, The evacuation door starting restriction is released through an emergency switch, the emergency switch comprises a seat body, a door plate connected with the seat body, a handle arranged in the seat body, a limiting cam mechanism with one end connected with the handle and penetrating through the inner wall of the seat body, a request stroke switch and an unlocking stroke switch fixed at the back of the seat body, and a limiting electromagnetic lock arranged at the back of the seat body, the limiting cam mechanism comprises a cam one with one end connected with the handle and penetrating through the inner wall of the seat body, and two contact surfaces one and two with different arc lengths and arranged on the left and right of the cam one; the evacuation door opening specifically comprises the following methods: S1: the handle on the emergency switch for locking the evacuation door is started for the first time, the contact surface one on the limiting cam mechanism is rotated to contact the request stroke switch through the handle, and the request stroke switch sends a request door opening signal to the control console; S2: the request door opening signal is confirmed and allowed by the operator in the control room, and the request stroke switch releases the rotation restriction of the contact surface one; S3: the allowing signal of the control room is received, the handle on the emergency switch is started again, the contact surface two on the limiting cam mechanism is rotated to contact the unlocking stroke switch through the handle, and the emergency switch releases the restriction on the evacuation door; S4: the control room simultaneously transmits a signal to another door leaf electronic lock for limiting the starting of the evacuation door, and the door leaf electronic lock releases the starting restriction of the evacuation door after receiving the information of the control room; S5: the evacuation door is gradually opened; S6: the ramp ladder is lowered; S7: when the evacuation door is closed, the following steps are implemented: a ramp clutch push rod self-resetting button is manually pressed, the ramp clutch push rod starts to advance, then a first recovery motor recovers the ramp through a ramp rope, a ramp electronic lock is manually locked, a door leaf recovery clutch self-resetting button is manually pressed, a second recovery motor recovers the door leaf through a door leaf rope, and finally a door leaf electronic lock is manually locked.

2. The evacuation door opening and closing control method according to claim 1, characterized by, In the step S1, the handle on the emergency switch is manually pulled and adjusted to 20°, so that the contact surface one on the cam one just contacts the request stroke switch, and the request stroke switch sends a request door opening signal to the control console; when the handle is adjusted to 20° trigger signal, whether the indicator light on the emergency switch flickers is observed.

3. The evacuation door opening and closing control method according to claim 1, characterized by, In the step S3, the handle on the emergency switch is manually adjusted to 90°, so that the contact surface two on the cam one just contacts the unlocking stroke switch, and the unlocking stroke switch sends an unlocking signal to the evacuation door leaf electronic lock for unlocking.

4. The evacuation door opening and closing control method according to claim 3, characterized by, When the handle is adjusted to 90° trigger signal, whether the indicator light on the emergency switch is always on is observed.

5. The evacuation door opening and closing control method according to claim 1, characterized in that, The step S4 further comprises that after the door leaf electronic lock is unlocked, the electronic locks on both sides of the evacuation door are synchronously opened.

6. The evacuation door opening and closing control method according to claim 1, characterized in that, The step S5 comprises that an electric push rod pushes the evacuation door to open to 2 / 3 of the evacuation door opening stroke, and then air springs arranged on both sides of the evacuation door push the evacuation door to the completed opening state.

7. The evacuation door opening and closing control method according to claim 1, characterized in that, The step S6 further comprises S60: after the ramp ladder is lowered, the electric push rod is automatically retracted backward, and the automatic recovery of the electric push rod is completed.

8. The evacuation door opening and closing control method according to claim 1, characterized by, The opening and closing control method of the evacuation door further comprises the following steps: when the emergency switch is off, the handle fails, the mechanical trigger switch on the emergency switch is opened manually, and the request opening signal is transmitted to the evacuation door system.

9. The evacuation door opening and closing control method according to claim 1, wherein The evacuation door system is further equipped with an intermediate relay, when the evacuation door and the ramp ladder are interrupted due to power failure during opening or recovery, after power recovery, the evacuation door and the ramp ladder will continue to run in the original state without resetting and restarting.

10. The evacuation door opening and closing control method according to claim 1, characterized in that, The S7 specifically comprises the following methods: S70: manually pressing the ramp clutch push rod self-reset button, when the controller receives the ramp clutch push rod self-reset button signal, the ramp clutch push rod starts to advance; S71: when it is detected that the ramp clutch push rod is extended to the position, the first recovery motor starts to work, the first recovery motor recovers the ramp through the ramp rope, and when it is detected that the ramp is recovered to the position, the recovery button is pressed again, and the first recovery motor no longer works; S72: manually locking the electronic locks on both sides of the ramp, when the controller detects the left ramp locking to position signal and the right ramp locking to position signal, the ramp clutch push rod is automatically retracted, the ramp clutch push rod is reset, and after the retraction to position signal is detected, the action is stopped; S73: manually pressing the door leaf recovery clutch self-reset button, when the controller receives the door leaf recovery clutch self-reset button signal, the door leaf clutch push rod starts to advance; S74: when it is detected that the door leaf recovery clutch is extended to the position, the second recovery motor starts to work, the second recovery motor recovers the door leaf through the door leaf rope, and when it is detected that the door leaf is recovered to the position, the recovery button is pressed again, and the second recovery motor no longer works; S75: manually locking the electronic locks on both sides of the door leaf, when the controller detects the left door leaf locking to position signal and the right door leaf locking to position signal, the door leaf clutch push rod is automatically retracted, the door leaf clutch push rod is reset, and after the retraction to position signal is detected, the action is stopped.

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