Platform door unlocking device and multi-unlocking channel platform door

Abstract

The invention provides a platform door unlocking device and a multi-unlocking-channel platform door, the platform door unlocking device comprises an electromagnetic door lock and a manual unlocking module, the electromagnetic door lock comprises an electromagnet, an unlocking shifting piece rotating shaft and an unlocking shifting piece, the electromagnet comprises a movable iron core, and the movable iron core is connected with a center lock pin shaft and a manual unlocking plate; the unlocking plectrum rotating shaft is arranged on a shell of the electromagnet, and the unlocking plectrum is rotatably arranged on the unlocking plectrum rotating shaft; the manual unlocking module comprises a deflector rod seat, a deflector rod rotating shaft, a deflector rod and an inhaul cable, the deflector rod rotating shaft is arranged on the deflector rod seat, the deflector rod is rotatably arranged on the deflector rod rotating shaft, the inhaul cable is connected with one end of the deflector rod, and a reset spring is arranged between the deflector rod seat and the deflector rod. The platform door unlocking device has the beneficial effects that the platform door unlocking device which is multiple in manual unlocking channel, large in unlocking position coverage range, high in adaptability, good in operability and high in safety is provided, the platform door emergency escape requirements of various vehicle type stops can be met through the device, and the platform door unlocking device has wide market prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit platform doors, and in particular to a platform door unlocking device and a multi-unlocking channel platform door. Background Art

[0002] At present, there are multiple types of vehicles in mixed operation in the railway system. Railway platforms are faced with the need for multiple types of trains to stop at the platform, and the parking position accuracy of high-speed railway trains is also low. Therefore, traditional half-high platform doors can no longer adapt. Therefore, in recent years, a double-door or stacked half-high platform door that can adapt to the different door opening position requirements of different models has emerged. The platform door is composed of a main frame movable along the edge of the platform with two sliding doors that move in opposite directions. The movable module is installed on the platform board in a movable and front and rear limited manner. Several adjacent movable door modules move in coordination with each other, which can realize the opening of the door at any position and form a larger door opening. This new type of high-speed railway platform door, because its movable module is arranged along the entire length of the platform, whether it is the two sliding doors hidden in the frame structure and sliding relative to the frame structure, or the frame itself, can be called a movable door structure, and there is no fixed door and emergency door in the traditional sense. Due to the particularity of mixed running of high-speed railway models, there is a need for emergency escape throughout the entire length of the platform. The traditional manual unlocking structure of the platform door with a single unlocking channel will no longer be suitable for the new high-speed railway platform door system. Therefore, there is a need for a platform door that can be manually unlocked for emergency escape on the track side at any position along the entire length of the platform. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a platform door unlocking device and a multi-unlocking channel platform door which can unlock the door unit lock at multiple points on the track side to realize emergency escape from the track side.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a platform door unlocking device, including an electromagnetic door lock and a manual unlocking module, the electromagnetic door lock includes an electromagnet, an unlocking paddle shaft and an unlocking paddle, the electromagnet includes a movable iron core, the movable iron core is connected with a central lock pin shaft and a manual unlocking plate, the electromagnet can drive the movable iron core to reciprocate along the axial direction of the movable iron core, insert the central lock pin shaft into the corresponding lock pin hole to achieve locking, or pull the central lock pin shaft out of the corresponding lock pin hole to achieve unlocking; the unlocking paddle shaft is arranged on the housing of the electromagnet, and the unlocking paddle is rotatably arranged on the unlocking paddle shaft; the manual unlocking module includes a lever seat, a lever shaft, at least two levers and at least two cables, the lever shaft is arranged on the lever seat, at least two levers are rotatably arranged on the lever shaft, each cable is connected to one end of a lever, and a return spring is arranged between the lever seat and the lever;

[0005] When any pull cable is pulled in the unlocking direction, the other end of the corresponding lever drives the unlocking paddle to rotate in the unlocking direction around the unlocking paddle shaft. The unlocking paddle can drive the manual unlocking plate of the electromagnetic door lock to move in the unlocking direction, thereby driving the central lock pin shaft to be pulled out from the corresponding lock pin hole to achieve unlocking.

[0006] Furthermore, a pin return spring is provided between the manual unlocking plate and the electromagnet.

[0007] Furthermore, an isolation sleeve is provided between two adjacent shifting rods.

[0008] Furthermore, the movable iron core is sleeved with a release buffer pad, and the release buffer pad is arranged at an end of the manual unlocking plate away from the electromagnet.

[0009] Furthermore, the movable iron core is sleeved with an attraction buffer pad, and the attraction buffer pad is arranged on one end of the manual unlocking plate close to the electromagnet.

[0010] Furthermore, the housing of the electromagnet is provided with a sliding bearing sleeve, and the central lock pin shaft reciprocates along the sliding bearing sleeve.

[0011] Furthermore, there are two unlocking paddle shafts and two unlocking paddles, and the two unlocking paddle shafts are arranged on both sides of the shell of the electromagnet. A rotatable unlocking paddle is connected to each unlocking paddle shaft, and a pressing part is provided on both sides of the manual unlocking plate corresponding to each unlocking paddle, and the lower ends of the two unlocking paddles are connected to a pressing plate.

[0012] The present invention also relates to a multi-unlocking channel platform door, comprising a platform door unlocking device as described in any one of the above.

[0013] Furthermore, it comprises a main frame and a sliding door assembly, the electromagnetic door lock of the platform door unlocking device is arranged on the main frame, and the sliding door assembly is provided with a lock pin hole corresponding to the central lock pin shaft of the electromagnetic door lock.

[0014] Furthermore, the sliding door assembly is provided with at least two manual unlocking assemblies, and each manual unlocking assembly is connected to a lever of a manual unlocking module of the platform door unlocking device via a pull cable.

[0015] The beneficial effects of the present invention are: providing a platform door unlocking device with multiple manual unlocking channels, a large unlocking position coverage range, strong adaptability, good operability and high safety. The device can meet the emergency escape needs of platform doors at stops for various types of vehicles and has broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific structure of the present invention is described in detail below in conjunction with the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the platform door unlocking device of the present invention from one perspective;

[0018] Figure 2 It is a schematic diagram of the overall structure of the platform door unlocking device of the present invention from another perspective;

[0019] Figure 3 It is a side view of the overall structure of the platform door unlocking device of the present invention;

[0020] Figure 4 It is a schematic diagram of the overall structure of the multi-unlocking channel platform door of the present invention;

[0021] Figure 5 It is a schematic diagram of the overall structure of the manual unlocking assembly of the present invention;

[0022] 1-Main frame; 2-Sliding door;

[0023] 110-electromagnet; 111-movable iron core; 112-central lock pin shaft; 113-manual unlocking plate; 1131-pressing part; 114-housing;

[0024] 120-unlocking paddle shaft; 121-unlocking paddle; 1211-pressing plate;

[0025] 130- lever seat; 1301- base; 131- lever shaft; 132- lever; 133- cable; 134- return spring; 135- isolation sleeve;

[0026] 140-pin shaft return spring; 150-release buffer pad; 160-sliding bearing sleeve; 170-attraction buffer pad; 201-manual unlocking seat; 202-manual unlocking shaft; 203-manual unlocking lever. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0033] Example

[0034] See also Figures 1 to 3 The present embodiment provides a platform door unlocking device, including an electromagnetic door lock and a manual unlocking module, wherein the electromagnetic door lock includes an electromagnet 110, an unlocking paddle shaft 120 and an unlocking paddle 121, wherein the electromagnet 110 includes a movable iron core 111, wherein the movable iron core 111 is connected with a central lock pin shaft 112 and a manual unlocking plate 113, wherein the electromagnet 110 can drive the movable iron core 111 to reciprocate along the axial direction of the movable iron core 111, insert the central lock pin shaft 112 into the corresponding lock pin hole to achieve locking, or pull the central lock pin shaft 112 out of the corresponding lock pin hole to achieve unlocking; The unlocking paddle shaft 120 is arranged on the housing 114 of the electromagnet 110, and the unlocking paddle 121 is rotatably arranged on the unlocking paddle shaft 120; the manual unlocking module includes a lever seat 130, a lever shaft 131, at least two levers 132 and at least two cables 133, the lever shaft 131 is arranged on the lever seat 130, at least two levers 132 are rotatably arranged on the lever shaft 131, each cable 133 is connected to one end of a lever 132, and a return spring 134 is arranged between the lever seat 130 and the lever 132;

[0035] When any pull cable 133 is pulled in the unlocking direction, the other end of the corresponding lever 132 drives the unlocking paddle 121 to rotate in the unlocking direction around the unlocking paddle shaft 120, and the unlocking paddle 121 can drive the manual unlocking plate 113 of the electromagnetic door lock to move in the unlocking direction, thereby driving the central lock pin shaft 112 to be pulled out from the corresponding lock pin hole to achieve unlocking.

[0036] In this embodiment, the platform door unlocking device specifically includes an electromagnetic door lock and a manual unlocking module. The electromagnetic door lock is used to switch the locked state or unlocked state of the electromagnetic door lock according to a control signal. The manual unlocking module is used to control the electromagnetic door lock to release the locked state through a manual unlocking component, thereby achieving unlocking. In order to allow the driver or passengers to manually unlock the door as soon as possible, the manual unlocking module is a multi-channel manual unlocking module. By arranging manual unlocking components in multiple locations, each manual unlocking component can manually unlock the electromagnetic door lock through the multi-channel manual unlocking module, thereby effectively expanding the unlocking position coverage to meet emergency escape needs.

[0037] Specifically, the electromagnetic door lock includes an electromagnet 110, an unlocking paddle shaft 120 and an unlocking paddle 121. The electromagnet 110 includes a movable iron core 111. The movable iron core 111 is connected with a manual unlocking plate 113 and a center lock pin shaft 112 in sequence along a direction away from the electromagnet. The electromagnet 110 can drive the movable iron core 111 to reciprocate along the axial direction of the movable iron core 111 according to a control signal, and insert the center lock pin shaft 112 into the corresponding lock pin hole to achieve locking, or pull the center lock pin shaft 112 out of the corresponding lock pin hole to achieve unlocking. To ensure safety, by default, when the electromagnet 110 loses power, the center lock pin shaft 111 is in a locked state inserted into the corresponding lock pin hole.

[0038] In order to realize manual unlocking, the unlocking paddle shaft 120 is arranged on the housing 114 of the electromagnet, the unlocking paddle 121 is rotatably arranged on the unlocking paddle shaft 120, and the manual unlocking plate 113 is provided with a pressing portion 1131 corresponding to the unlocking paddle 121. The manual unlocking module includes a lever seat 130, a lever shaft 131, at least two levers 132 and at least two cables 133. The lever seat 130 is arranged below the electromagnetic door lock through a base 1301, the lever shaft 131 is arranged on the lever seat 130, at least two levers 132 are rotatably arranged on the lever shaft 131, each cable 133 is connected to one end of a lever 132, and a reset spring 134 is arranged between the lever seat 130 and each lever 132. The reset spring 134 is used to restore the lever 132 to a default posture through elastic force.

[0039] The other end of each pull cable 133 is connected to a manual unlocking assembly arranged at the far end. By using any manual unlocking assembly to pull the pull cable 133 in the unlocking direction, the corresponding lever 132 can be rotated around the lever shaft 131, and the other end of the corresponding lever 132 can apply an external force to the other end of the unlocking paddle 121, so that the unlocking paddle 121 can rotate in the unlocking direction around the unlocking paddle shaft 120. At this time, the end of the unlocking paddle 121 close to the manual unlocking plate 113 can drive the manual unlocking plate 113 to move in the unlocking direction, thereby driving the center lock pin shaft 112 to move in the unlocking direction until the center lock pin shaft 112 is pulled out of the corresponding lock pin hole, thereby achieving unlocking.

[0040] As a preferred embodiment of this embodiment, a pin return spring 140 is provided between the manual unlocking plate 113 and the electromagnet 110 .

[0041] During specific implementation, in order to ensure that the electromagnetic door lock can be kept in a locked state when the electromagnet 110 is in a power-off state, a pin shaft reset spring 140 is provided between the manual unlocking plate 113 and the electromagnet 110. The pin shaft reset spring 140 is sleeved on the movable iron core 111. One end of the pin shaft reset spring 140 abuts against the electromagnet 110, and the other end abuts against the manual unlocking plate 113, thereby providing an elastic force for the movable iron core 111 in the locking direction.

[0042] As a preference of this embodiment, an isolation sleeve 135 is provided between two adjacent shifting rods 132 .

[0043] In a specific implementation, by providing an isolation sleeve 135 between two adjacent levers 132 , the lever 132 can be prevented from axially moving along the lever shaft 131 , thereby ensuring the stability and reliability of the lever 132 rotating around the lever shaft 131 .

[0044] As a preferred embodiment of this embodiment, the movable iron core 111 is sleeved with a release buffer pad 150 , and the release buffer pad 150 is arranged at an end of the manual unlocking plate 113 away from the electromagnet 110 .

[0045] In specific implementation, by setting a release buffer pad 150 at the end of the manual unlocking plate 113 away from the electromagnet 110, the electromagnet 110 can reduce the impact of the movable iron core 111 and the center lock pin shaft 112 on the electromagnetic door lock when releasing the movable iron core 111, thereby playing a role in buffering and noise reduction.

[0046] As a preferred embodiment of this embodiment, the movable iron core 111 is sleeved with an attraction buffer pad 170 , and the attraction buffer pad 170 is arranged at one end of the manual unlocking plate 113 close to the electromagnet 110 .

[0047] In a specific implementation, by providing an attraction buffer pad 170 at one end of the manual unlocking plate 113 close to the electromagnet 110, the electromagnet 110 can reduce the impact of the movable iron core 111 on the electromagnetic door lock when absorbing the movable iron core 111, thereby playing a role of buffering and noise reduction.

[0048] As a preference of this embodiment, the housing 114 of the electromagnet is provided with a sliding bearing sleeve 160 , and the center lock pin shaft 112 reciprocates along the sliding bearing sleeve 160 .

[0049] In specific implementation, by setting a sliding bearing sleeve 160 in the housing 114 of the electromagnet, the center lock pin shaft 112 can reciprocate along the sliding bearing sleeve 160, so that the sliding bearing sleeve 160 can guide the center lock pin shaft 112 to ensure locking accuracy.

[0050] As a preference of this embodiment, there are two unlocking paddle shafts 120 and two unlocking paddles 121, and the two unlocking paddle shafts 120 are arranged on both sides of the electromagnet housing 114, and each unlocking paddle shaft 120 is connected to a rotatable unlocking paddle 121, and a pressing portion 1131 is provided on both sides of the manual unlocking plate 113 corresponding to each unlocking paddle 121, and the lower ends of the two unlocking paddles 121 are connected to a pressing plate 1211.

[0051] In specific implementation, two groups of unlocking paddle shafts 120 and unlocking paddles 121 are set, and the two unlocking paddle shafts 120 are respectively set on both sides of the electromagnet housing 114, and each unlocking paddle shaft 120 is connected to a rotatable unlocking paddle 121, and a pressing portion 1131 is provided on both sides of the manual unlocking plate 113 corresponding to each unlocking paddle 121. By applying external force to the manual unlocking plate 113 from both sides of the manual unlocking plate 113 at the same time, the force balance of the manual unlocking plate 113 can be ensured, thereby ensuring the smooth locking action of the center lock pin shaft 111.

[0052] The lower ends of the two unlocking paddles 121 are connected to a pressing plate 1211 , and each lever 132 can drive the unlocking paddle 121 to rotate around the unlocking paddle shaft 120 by applying force to the pressing plate 1211 , thereby driving the manual unlocking plate 113 to move to achieve unlocking.

[0053] See also Figure 4 The present invention also relates to a multi-unlocking channel platform door, including the platform door unlocking device as described above.

[0054] The multi-channel platform specifically includes a main frame 1 and a sliding door assembly. The electromagnetic door lock of the platform door unlocking device is arranged on the main frame 1, and the sliding door assembly is provided with a lock pin hole corresponding to the central lock pin shaft 111 of the electromagnetic door lock.

[0055] During specific implementation, the sliding door assembly includes two sliding doors 2, which are respectively arranged at opposite ends of the main frame 1. The two sliding doors 2 can make synchronous reverse movements relative to the main frame 1. When in a closed state, the two sliding doors 2 extend to the outside of the main frame; when in an open state, the two sliding doors 2 can be stored in the main frame 1.

[0056] The electromagnetic door lock of the platform door unlocking device is arranged on the main frame 1, and the sliding door assembly is provided with a lock pin hole corresponding to the central lock pin shaft 111 of the electromagnetic door lock. When the sliding door assembly is in a closed state, the central lock pin shaft 111 can be inserted into the lock pin hole to achieve locking.

[0057] As a preference of this embodiment, the sliding door assembly is provided with at least two manual unlocking assemblies, each of which is connected to a lever 132 of the manual unlocking module of the platform door unlocking device via a pull cable 133 .

[0058] During specific implementation, in order to ensure that the driver or passenger can manually unlock the sliding door assembly as soon as possible, the sliding door assembly is provided with at least two manual unlocking assemblies, each of which is connected to a lever 132 of the manual unlocking module of the platform door unlocking device via a pull rope 133, thereby expanding the coverage of the unlocking position to meet emergency escape needs.

[0059] See also Figure 5 The manual unlocking assembly includes a manual unlocking seat 201, a manual unlocking shaft 202 and a manual unlocking lever 203. The manual unlocking seat 201 is arranged on the sliding door assembly. The manual unlocking seat 201 is provided with a manual unlocking shaft 202. The manual unlocking lever 203 is rotatably arranged on the manual unlocking shaft 202. The manual unlocking lever 203 is in a "T" shape. The manual unlocking lever 203 includes a manual unlocking lever first arm and a manual unlocking lever second arm. The manual unlocking lever second arm is connected to the middle part of the manual unlocking lever first arm, and the manual unlocking lever second arm is approximately perpendicular to the manual unlocking lever first arm. The cable is connected to an end of the manual unlocking lever second arm away from the manual unlocking lever first arm.

[0060] The manual unlocking lever 203 and the manual unlocking shaft 202 are connected at the intersection of the first arm of the manual unlocking lever and the second arm of the left manual unlocking lever, which ensures the structural strength of the manual unlocking lever 203 while facilitating the user to apply rotational external force to the manual unlocking lever 203 .

[0061] When rotating the manual unlocking lever 203, the manual unlocking lever can be easily rotated in the unlocking direction around the manual unlocking shaft by applying a pulling force to one end of the first arm of the manual unlocking lever and applying a pushing force to the other end of the first arm of the manual unlocking lever.

[0062] From the above description, it can be seen that the beneficial effects of the present invention are: providing a platform door unlocking device with multiple manual unlocking channels, a large unlocking position coverage range, strong adaptability, good operability and high safety. This device can meet the emergency escape needs of platform doors at stops for various types of vehicles and has broad market prospects.

[0063] It is easy for those skilled in the art to understand that the above-mentioned implementation modes can be freely combined and superimposed without conflict.

[0064] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A platform door unlocking device, characterized in that: The invention relates to an electromagnetic door lock and a manual unlocking module, wherein the electromagnetic door lock comprises an electromagnet, an unlocking paddle shaft and an unlocking paddle, wherein the electromagnet comprises a movable iron core, wherein the movable iron core is connected to a central lock pin shaft and a manual unlocking plate, wherein the electromagnet can drive the movable iron core to reciprocate along the axial direction of the movable iron core, insert the central lock pin shaft into the corresponding lock pin hole to achieve locking, or pull the central lock pin shaft out of the corresponding lock pin hole to achieve unlocking; the unlocking paddle shaft is arranged on the housing of the electromagnet, and the unlocking paddle is rotatably arranged on the unlocking paddle shaft; the manual unlocking module comprises a lever seat, a lever shaft, at least two levers and at least two cables, wherein the lever shaft is arranged on the lever seat, and the at least two levers are rotatably arranged on the lever shaft, respectively, and each cable is connected to one end of a lever, and a return spring is arranged between the lever seat and the lever; When any pull cable is pulled in the unlocking direction, the other end of the corresponding lever drives the unlocking paddle to rotate in the unlocking direction around the unlocking paddle shaft. The unlocking paddle can drive the manual unlocking plate of the electromagnetic door lock to move in the unlocking direction, thereby driving the central lock pin shaft to be pulled out from the corresponding lock pin hole to achieve unlocking.

2. The platform door unlocking device according to claim 1, characterized in that: A pin return spring is provided between the manual unlocking plate and the electromagnet.

3. The platform door unlocking device according to claim 1, characterized in that: An isolation sleeve is arranged between two adjacent shifting rods.

4. The platform door unlocking device according to claim 1, characterized in that: The movable iron core is sleeved with a release buffer pad, and the release buffer pad is arranged on an end of the manual unlocking plate away from the electromagnet.

5. The platform door unlocking device according to claim 1, characterized in that: The movable iron core is sleeved with an attraction buffer pad, and the attraction buffer pad is arranged on one end of the manual unlocking plate close to the electromagnet.

6. The platform door unlocking device according to claim 1, characterized in that: The housing of the electromagnet is provided with a sliding bearing sleeve, and the central lock pin shaft reciprocates along the sliding bearing sleeve.

7. The platform door unlocking device according to claim 1, characterized in that: There are two unlocking paddle shafts and unlocking paddles, and the two unlocking paddle shafts are arranged on both sides of the shell of the electromagnet. A rotatable unlocking paddle is connected to each unlocking paddle shaft. A pressing part is provided on both sides of the manual unlocking plate corresponding to each unlocking paddle, and the lower ends of the two unlocking paddles are connected to a pressing plate.

8. A multi-unlocking channel platform door, characterized in that: It comprises a platform door unlocking device as described in any one of claims 1-7.

9. The multi-unlocking channel platform door according to claim 8, characterized in that: It comprises a main frame and a sliding door assembly. The electromagnetic door lock of the platform door unlocking device is arranged on the main frame. The sliding door assembly is provided with a lock pin hole corresponding to the central lock pin shaft of the electromagnetic door lock.

10. The multi-unlocking channel platform door according to claim 9, characterized in that: The sliding door assembly is provided with at least two manual unlocking assemblies, and each manual unlocking assembly is connected to a lever of a manual unlocking module of the platform door unlocking device via a pull cable.

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