Train platform door system

Abstract

The present invention belongs to the field of rail transit technology, and discloses a train platform door system, including a mounting frame and a plurality of safety door assemblies, the mounting frame extends along the length direction of the platform, the plurality of safety door assemblies are arranged at intervals along the length direction of the platform, each safety door assembly includes a sliding door, a first opening and closing door, and a second opening and closing door, the sliding door is movably connected to the mounting frame along the length direction of the platform, and the first opening and closing door and the second opening and closing door are both movably connected to the sliding door. When the train arrives at the station, the sliding door can be driven to move to a position close to the train door according to the parking position of the train and the length of the carriage, and then the first opening and closing door and the second opening and closing door move toward each other relative to the sliding door, so that the safety door assembly is opened, and the open position is opposite to the train door, thereby forming a smooth and unobstructed boarding and alighting passage, and the opened boarding and alighting passage is wide, which is convenient for passengers to pass smoothly, and avoids train delays caused by large passenger flow.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transportation, and in particular to a train platform door system. Background Art

[0002] Currently, platform door systems are increasingly used in intercity high-speed railway stations to prevent waiting passengers from falling onto the platform. However, due to the large number of train models and the different lengths of each carriage, after stopping at the unified parking mark at the station, the door positions of various models are discrete on the station platform. In other words, the disembarkation positions of different trains at the station after stopping are not uniform, and the distances between the boarding and alighting positions are inconsistent. If an ordinary platform door system is installed, it is difficult for the train door to align with the sliding door of the platform door system, and passengers are blocked from getting on and off by the platform door system, making it inconvenient to pass through, which hinders the station's operational needs for rapid boarding and alighting.

[0003] Most existing platform door systems are installed in a setback manner. The platform doors are set 1.2m apart from the edge of the waiting platform to form a 1.2m wide boarding and alighting passage between the platform door and the train. When getting off the train, passengers must first exit the train door, walk a distance along the length of the train in the 1.2m passage, and then find the nearest sliding door to exit. The same is true when passengers board the train. First, find the sliding door closest to the corresponding carriage, enter, walk a distance in the 1.2m passage, and then board the train.

[0004] The setting of the above-mentioned passage solves the problem of difficulty in getting on and off the train caused by the inability to align the sliding door and the train door in the platform door system. However, the speed of passengers passing through is slow, which seriously hinders the station's operating efficiency. When the passenger flow is large, the passage is prone to blockage, causing train delays. Moreover, the narrowest part of the high-speed rail waiting platform that has been built is mostly only 2.5m wide. After the platform door is set back by 1.2m, plus the thickness of the platform door system itself, the platform width available for passengers to wait and walk is less than 1m, which is extremely inconvenient for passengers with more luggage. In addition, a garbage sweeper is installed at the high-speed rail waiting platform. The width of the vehicle body is about 1.2m. After the platform door system is set back, the garbage sweeper cannot pass through the too narrow waiting area. Summary of the invention

[0005] The purpose of the present invention is to provide a train platform door system, which can adjust the door opening position so as to face the train door, making it convenient for passengers to get on and off the train. It has a simple structure, does not require a platform for installation, occupies a small space, and is easy to assemble and subsequently maintain.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A train platform door system comprises a mounting frame and a plurality of safety door assemblies, wherein the mounting frame extends along the length direction of the platform, the plurality of safety door assemblies are arranged at intervals along the length direction of the platform, and each of the safety door assemblies comprises:

[0008] a sliding door movably connected to the mounting frame along the length direction of the platform;

[0009] The first opening and closing door and the second opening and closing door are both movably connected to the sliding door along the length direction of the platform;

[0010] The first opening and closing door and the second opening and closing door can move toward each other relative to the sliding door so that the safety door combination opens;

[0011] The first opening and closing door and the second opening and closing door can move away from each other relative to the sliding door so that the safety door combination is closed.

[0012] As a preferred solution of the train platform door system provided by the present invention, it also includes a first drive assembly and a first transmission assembly, and the first transmission assembly includes:

[0013] A first rotating wheel, the first rotating wheel is drivingly connected to an output end of the first driving assembly;

[0014] a second rotating wheel, the second rotating wheel and the first rotating wheel are arranged at intervals along the length direction of the platform;

[0015] Conveyor belt, the first opening and closing door is connected to the upper belt body of the conveyor belt, the second opening and closing door is connected to the lower belt body of the conveyor belt, and the first rotating wheel drives the second rotating wheel to rotate synchronously through the conveyor belt, so that the first opening and closing door and the second opening and closing door move toward or away from each other.

[0016] As a preferred solution of the train platform door system provided by the present invention, it also includes a first mounting seat and a second mounting seat, the first rotating wheel is connected to the sliding door through the first mounting seat, and the second rotating wheel is connected to the sliding door through the second mounting seat.

[0017] As a preferred solution of the train platform door system provided by the present invention, one end of the first mounting seat away from the sliding door extends upward to above the first opening and closing door, and cooperates with the first rotating wheel for rotation, and the second mounting seat one end away from the sliding door extends upward to above the second opening and closing door, and cooperates with the second rotating wheel for rotation.

[0018] As a preferred solution of the train platform door system provided by the present invention, it also includes a first connecting member and a second connecting member.

[0019] One end of the first connecting member is connected to the first opening and closing door, and the other end is bent toward the second rotating wheel and connected to the upper belt body of the conveyor belt;

[0020] One end of the second connecting member is connected to the second opening and closing door, and the other end is bent toward the first rotating wheel and connected to the lower belt body of the conveyor belt.

[0021] As a preferred solution of the train platform door system provided by the present invention, it also includes a second drive component, the output end of the second drive component is transmission-connected with a gear, the gear is connected to the sliding door, and a rack matching the gear is arranged on the mounting frame along the length direction. The second drive component drives the gear to rotate to drive the sliding door to move.

[0022] As a preferred solution of the train platform door system provided by the present invention, it also includes a first hanging member and a first cantilever, the first hanging member is arranged at the top of the sliding door, the first cantilever is arranged on the mounting frame, and the first hanging member is hung on the first cantilever.

[0023] As a preferred solution of the train platform door system provided by the present invention, a first guide rail is provided on the first cantilever, and the first guide rail faces upward, and a first roller is provided on the first hanging member, and the first roller and the first guide rail are in rolling cooperation; or,

[0024] The first cantilever is provided with a slide rail, and the slide rail faces upwards. The first hanging component is provided with a slider, and the slider is slidably matched with the slide rail.

[0025] As a preferred solution of the train platform door system provided by the present invention, it also includes:

[0026] a second hanging member and a second cantilever, wherein the second hanging member is arranged at the top end of the first opening and closing door, the second cantilever is arranged on the mounting frame, and the second hanging member is hung on the second cantilever;

[0027] A third hanging member and a third cantilever, wherein the third hanging member is arranged at the top end of the second opening and closing door, the third cantilever is arranged on the mounting frame, and the third hanging member is hung on the third cantilever.

[0028] As a preferred solution of the train platform door system provided by the present invention,

[0029] The second cantilever is provided with a second guide rail, and the second guide rail faces upward, and the second hanging member is provided with a second roller, and the second roller is in rolling cooperation with the second guide rail;

[0030] The third cantilever is provided with a third guide rail, and the third guide rail faces upward. The third hanging component is provided with a third roller, and the third roller is in rolling cooperation with the third guide rail.

[0031] Beneficial effects of the present invention:

[0032] The present invention provides a train platform door system, including a mounting frame and a plurality of safety door assemblies, wherein the mounting frame extends along the length direction of the platform, the plurality of safety door assemblies are arranged at intervals along the length direction of the platform, each safety door assembly includes a sliding door, a first opening and closing door and a second opening and closing door, the sliding door is movably connected to the mounting frame along the length direction of the platform, and the first opening and closing door and the second opening and closing door are both movably connected to the sliding door. When the train arrives at the station, the sliding door can be driven to move to a position close to the train door according to the parking position of the train and the length of the carriage, and then the first opening and closing door and the second opening and closing door move toward each other relative to the sliding door, so that the safety door assembly is opened, and the open position is opposite to the train door, thereby forming a smooth and unobstructed boarding and alighting passage, and the opened boarding and alighting passage is wide, which is convenient for passengers to pass smoothly, and avoids train delays caused by large passenger flow. Moreover, the train platform door system has a simple structure, occupies a small space, and is easy to install and subsequently maintain. Before the train runs again, the first opening and closing door and the second opening and closing door are driven to move away from each other relative to the sliding door so that the safety door combination is closed, forming a platform door system with a shielding effect, preventing passengers from falling off the platform and improving the safety of the platform waiting area. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of a set of safety door combinations when they are closed, provided by a specific embodiment of the present invention;

[0034] Figure 2 yes Figure 1 A top view of the middle safety door assembly;

[0035] Figure 3 It is a structural schematic diagram of a set of safety door combinations provided by a specific embodiment of the present invention when they are opened;

[0036] Figure 4 yes Figure 3 Top view of the middle safety door assembly;

[0037] Figure 5 It is a schematic diagram of the structure when three sets of safety doors are combined and closed according to a specific embodiment of the present invention;

[0038] Figure 6 yes Figure 5 A top view of the middle safety door assembly;

[0039] Figure 7 It is a schematic diagram of the structure when three sets of safety doors are opened in combination provided by a specific embodiment of the present invention;

[0040] Figure 8 yes Figure 7 A top view of the middle safety door assembly;

[0041] Fig. 9It is a schematic diagram of various door opening states of three sets of safety door combinations provided by a specific embodiment of the present invention;

[0042] Fig.10 It is a side view of a train platform door system provided by a specific embodiment of the present invention.

[0043] In the figure:

[0044] 100-Mounting frame;

[0045] 1-safety door assembly; 2-first drive assembly; 3-first transmission assembly;

[0046] 11-sliding door; 12-first opening and closing door; 13-second opening and closing door;

[0047] 31-first rotating wheel; 32-second rotating wheel; 33-conveyor belt; 331-upper belt body; 332-lower belt body;

[0048] 41-first mounting seat; 42-second mounting seat;

[0049] 51-first connecting member; 52-second connecting member;

[0050] 61- second driving assembly; 62- gear; 63- rack;

[0051] 71-first hanging member; 72-first cantilever; 711-first roller; 721-first guide rail;

[0052] 81-second hanging member; 82-second cantilever; 811-second roller; 821-second guide rail;

[0053] 91 - the third hoisting member; 92 - the third cantilever; 911 - the third roller; 921 - the third guide rail. DETAILED DESCRIPTION

[0054] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0055] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection 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.

[0056] 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.

[0057] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0058] like Figures 1 to 3 As shown, this embodiment provides a train platform door system, including a mounting frame 100 and a plurality of safety door assemblies 1. The mounting frame 100 extends along the length direction of the platform. The plurality of safety door assemblies 1 are arranged at intervals along the length direction of the platform.

[0059] Each safety door assembly 1 includes a sliding door 11, a first opening and closing door 12, and a second opening and closing door 13. The sliding door 11 is movably connected to the mounting frame 100 along the length direction of the platform. The first opening and closing door 12 and the second opening and closing door 13 are both movably connected to the sliding door 11. When the train arrives at the station, the sliding door 11 can be driven to move to a position close to the train door according to the parking position of the train and the length of the carriage. Subsequently, the first opening and closing door 12 and the second opening and closing door 13 move toward each other relative to the sliding door 11, so that the safety door assembly 1 is opened (see Figure 3 and Figure 4 ), the open position is directly opposite to the train door, thus forming a smooth and unobstructed boarding and alighting passage, and the open boarding and alighting passage is wide, which is convenient for passengers to pass smoothly and avoids train delays caused by large passenger flow. In addition, the train platform door system has a simple structure, occupies a small space, and is easy to install and subsequently maintain. Before the train runs again, the first opening and closing door 12 and the second opening and closing door 13 are driven to move back to back relative to the sliding door 11 to close the safety door assembly 1 (see Figure 1 and Figure 2 ), forming a platform door system with a shielding effect to prevent passengers from falling off the platform and improve the safety of the platform waiting area.

[0060] In this embodiment, a plurality of safety door assemblies 1 are sequentially spliced ​​to form the entire platform door, and the adjacent first opening and closing doors 12 are connected to the second opening and closing doors 13 to realize the splicing of two adjacent safety door assemblies 1. Figure 5 and Figure 6 For example, the train platform door system includes three sets of safety door assemblies 1. When the three sets of safety door assemblies 1 are in a closed state, they are spliced ​​to form the entire platform door to play a shielding role and ensure the safety of waiting passengers. Figure 7 and Figure 8 When the train enters the station, the three sets of safety door assemblies 1 are all opened, and the sliding door 11 drives the safety door assembly 1 to move to a suitable position so that the three sets of safety doors are opened and face the train doors one by one, which is convenient for passengers to pass.

[0061] For different train door widths, the safety door combination 1 can be adjusted according to actual conditions. During installation, according to project requirements, it can be flexibly combined into a platform door system to form a combination of various opening positions and opening sizes. For details, see Fig. 9 By moving the sliding doors 11 of the three safety door assemblies 1, boarding and alighting passages in various positions and widths can be formed, which is highly practical.

[0062] Understandably, Fig. 9 The figure only shows several opening states of the sliding doors 11 in the three sets of safety door combinations 1 when they are in different positions. The combination form is not limited to that shown in the figure. Those skilled in the art can set different combinations according to the specific needs of the project construction to make the platform door system have a variety of opening positions and opening sizes, which are not listed here one by one.

[0063] It is understandable that the number of safety door assemblies 1 is not limited to three, but can be any other number, which can be selected according to the specific requirements of the project during construction. Multiple sets of safety door assemblies 1 are spliced ​​in sequence, and can be moved over a long distance when opened to avoid blocking the train doors. Through the flexible grouping of multiple sets of safety door assemblies 1, a door opening width many times that of the traditional platform door system can be created, which meets the needs of passengers to get on and off the train quickly without the need for 1.2m setback installation, and effectively solves the problem of misalignment between the platform safety door and the train door.

[0064] Furthermore, a movable third opening and closing door and a fourth opening and closing door may be provided in the safety door combination 1. The third opening and closing door is movably provided on the first opening and closing door 12 along the length direction of the platform, and the third opening and closing door is movably provided on the second opening and closing door 13 along the length direction of the platform. When the safety door combination 1 is opened, the first opening and closing door 12, the second opening and closing door 13, the third opening and closing door and the fourth opening and closing door are all extended to overlap with the sliding door 11 to further increase the width of the safety door combination 1 when it is opened. Alternatively, only one opening and closing door is provided on the sliding door 11, and when the safety door combination 1 is opened, a narrower boarding and alighting passage can be formed to accommodate the narrower train door. The number of opening and closing doors is not specifically limited here.

[0065] Alternatively, see Figure 1 and Figure 3 The train platform door system further includes a first drive assembly 2 and a first transmission assembly 3. The first transmission assembly 3 includes a first rotating wheel 31, a second rotating wheel 32 and a conveyor belt 33. The first rotating wheel 31 is connected to the output end of the first drive assembly 2 by transmission. The second rotating wheel 32 and the first rotating wheel 31 are arranged at intervals along the length direction of the platform. The first opening and closing door 12 is connected to the upper belt body 331 of the conveyor belt 33, and the second opening and closing door 13 is connected to the lower belt body 332 of the conveyor belt 33. The first rotating wheel 31 drives the second rotating wheel 32 to rotate synchronously through the conveyor belt 33, so that the first opening and closing door 12 and the second opening and closing door 13 move toward or away from each other. By setting the belt transmission structure, the first opening and closing door 12 and the second opening and closing door 13 can be moved toward or away from each other conveniently and quickly, that is, the bidirectional movement of the first opening and closing door 12 and the second opening and closing door 13 can be realized only by one first drive assembly 2, which effectively reduces the engineering cost. When the first opening and closing door 12 moves, it is always connected to the upper belt body 331 of the conveyor belt 33, and when the second opening and closing door 13 moves, it is always connected to the lower belt body 332 of the conveyor belt 33. In other words, the connection between the first opening and closing door 12, the second opening and closing door 13 and the conveyor belt 33 does not bypass the first rotating wheel 31 and the second rotating wheel 32 during the opening and closing process, so as to ensure that the first opening and closing door 12 and the second opening and closing door 13 always move along the length direction of the platform.

[0066] Continue reading Figure 1 and Figure 3, optionally, the first rotating wheel 31 is connected to the sliding door 11 through the first mounting seat 41, and the second rotating wheel 32 is connected to the sliding door 11 through the second mounting seat 42. Specifically, the end of the first mounting seat 41 away from the sliding door 11 extends upward to the top of the first opening and closing door 12, and is rotatably matched with the first rotating wheel 31. The end of the second mounting seat 42 away from the sliding door 11 extends upward to the top of the second opening and closing door 13, and is rotatably matched with the second rotating wheel 32. This arrangement enables the first transmission assembly 3 to be located above the sliding door 11, and the center distance between the first rotating wheel 31 and the second rotating wheel 32 (i.e., the center distance of the belt drive) is greater than the width of the sliding door 11, so that the first opening and closing door 12 and the second opening and closing door 13 have sufficient moving space, so that the two can move to completely overlap with the sliding door 11.

[0067] Optionally, the first opening and closing door 12 is connected to the upper belt body 331 through a first connecting member 51. The second opening and closing door 13 is connected to the lower belt body 332 through a second connecting member 52. Specifically, one end of the first connecting member 51 is connected to the first opening and closing door 12, and the other end is bent toward the second rotating wheel 32 and connected to the upper belt body 331 of the conveyor belt 33. One end of the second connecting member 52 is connected to the second opening and closing door 13, and the other end is bent toward the first rotating wheel 31 and connected to the lower belt body 332 of the conveyor belt 33. Figure 1 When the safety door assembly 1 is closed, the first connecting member 51 is connected to the left end of the upper belt body 331, and the second connecting member 52 is connected to the right end of the lower belt body 332. Figure 3 When the safety door assembly 1 is opened, the first connecting member 51 is connected to the right end of the upper belt body 331, and the second connecting member 52 is connected to the left end of the lower belt body 332. This arrangement ensures that the first opening and closing door 12 and the second opening and closing door 13 have the largest moving space without occupying a large space, which can save materials for belt transmission and reduce resource waste.

[0068] Alternatively, see Figure 1 and Fig.10 The sliding door 11 is moved by the second driving assembly 61. The output end of the second driving assembly 61 is connected to a gear 62. The gear 62 is connected to the sliding door 11. A rack 63 is provided on the mounting frame 100 along the length direction to cooperate with the gear 62. The second driving assembly 61 is started to drive the gear 62 to rotate, so that the gear 62 moves along the rack 63 under the action of the meshing force, and the sliding door 11 is then driven by the gear 62 to move along the length direction of the platform.

[0069] See also Fig.10The train platform door system further includes a first hanging member 71 and a first cantilever 72. The first hanging member 71 is disposed at the top of the sliding door 11, the first cantilever 72 is disposed on the mounting frame 100, and the first hanging member 71 is hung on the first cantilever 72. That is, the sliding door 11 is hung on the first cantilever 72 through the first hanging member 71. The first cantilever 72 can share part of the weight of the sliding door 11 to prevent the sliding door 11 from being too heavy and causing deformation or even damage to the supporting structure below.

[0070] Furthermore, a first guide rail 721 is disposed on the first cantilever 72 , and the first guide rail 721 faces upward.

[0071] The first hanging member 71 is provided with a first roller 711 , and the first roller 711 is in rolling cooperation with the first guide rail 721 .

[0072] The first guide rail 721 is arranged parallel to the above-mentioned rack 63, and the rack 63 is also arranged on the first cantilever 72. When the sliding door 11 moves along the rack 63, the sliding door 11 drives the first hanging member 71 to move, and the roller on the first hanging member 71 rolls along the first guide rail 721 to reduce the friction when the sliding door 11 moves, save the power output of the second driving component 61, and further reduce energy consumption. Preferably, the surface of the first roller 711 is concave inward to form a limiting groove, and the first guide rail 721 is inserted into the limiting groove. The groove wall of the limiting groove can prevent the sliding door 11 from shaking greatly when moving, avoid displacement or misalignment, thereby improving the moving stability of the sliding door 11.

[0073] In other embodiments of the present invention, a slide rail may also be provided on the first cantilever 72, and the slide rail faces upward. A slider is correspondingly provided on the first hanging member 71, and the slider and the slide rail slide together, which can also play a role in reducing friction. At the same time, the cooperation between the slide rail and the slider can also improve the moving stability of the sliding door 11.

[0074] Continue reading Fig.10 Similarly, a second hanging member 81 is provided at the top of the first opening and closing door 12, and a second cantilever 82 is provided on the mounting frame 100. A third hanging member 91 is provided at the top of the second opening and closing door 13, and a third cantilever 92 is correspondingly provided on the mounting frame 100. The second hanging member 81 is hung on the second cantilever 82, and the third hanging member 91 is hung on the third cantilever 92. That is, the first opening and closing door 12 is hung on the second cantilever 82 through the second hanging member 81, and the second opening and closing door 13 is hung on the third cantilever 92 through the third hanging member 91. The second cantilever 82 and the third cantilever 92 can share part of the gravity of the first opening and closing door 12 and the second opening and closing door 13 to prevent the two from being too heavy and causing the supporting structure below to be deformed or even damaged.

[0075] Further, the second cantilever 82 is provided with a second guide rail 821, and the second guide rail 821 faces upward, and the second hanging member 81 is provided with a second roller 811, and the second roller 811 and the second guide rail 821 are rollingly matched to reduce the friction when the first opening and closing door 12 moves, thereby reducing energy consumption. At the same time, the surface of the second roller 811 is inwardly concave to form a limiting groove, and the limiting groove and the second guide rail 821 cooperate to avoid the first opening and closing door 12 from shifting or misaligning when moving, thereby improving stability. The third cantilever 92 is provided with a third guide rail 921, and the third guide rail 921 faces upward, and the third hanging member 91 is provided with a third roller 911, and the third roller 911 and the third guide rail 921 are rollingly matched to reduce the friction when the second opening and closing door 13 moves. The third roller 911 is also provided with a limiting groove, and is adaptively matched with the third guide rail 921 to improve the stability when the second opening and closing door 13 moves.

[0076] Of course, the cooperation between the second guide rail 821 and the second roller 811, and the cooperation between the third guide rail 921 and the third roller 911 can also be replaced by the sliding cooperation between the slide rail and the slider, which can also achieve the above-mentioned technical effect of reducing friction and improving movement smoothness.

[0077] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A train platform door system, characterized in that: The invention comprises a mounting frame (100) and a plurality of safety door assemblies (1), wherein the mounting frame (100) extends along the length direction of the platform, and the plurality of safety door assemblies (1) are arranged at intervals along the length direction of the platform, and each of the safety door assemblies (1) comprises: A sliding door (11) movably connected to the mounting frame (100) along the length direction of the platform; The first opening and closing door (12) and the second opening and closing door (13) are both movably connected to the sliding door (11) along the length direction of the platform; the first opening and closing door (12) and the second opening and closing door (13) can move towards each other relative to the sliding door (11) so that the safety door assembly (1) is opened; the first opening and closing door (12) and the second opening and closing door (13) can move away from each other relative to the sliding door (11) so that the safety door assembly (1) is closed, and the first opening and closing door (12) and the second opening and closing door (13) can move to completely overlap with the sliding door (11); The train platform door system further comprises a first drive assembly (2) and a first transmission assembly (3), wherein the first transmission assembly (3) comprises: A first rotating wheel (31), the first rotating wheel (31) being drivingly connected to an output end of the first driving assembly (2); a second rotating wheel (32), the second rotating wheel (32) and the first rotating wheel (31) being arranged at an interval along the length direction of the platform; A conveyor belt (33), the first opening and closing door (12) is connected to an upper belt body (331) of the conveyor belt (33), the second opening and closing door (13) is connected to a lower belt body (332) of the conveyor belt (33), the first rotating wheel (31) drives the second rotating wheel (32) to rotate synchronously through the conveyor belt (33), so that the first opening and closing door (12) and the second opening and closing door (13) move toward or away from each other; The train platform door system further comprises a second drive assembly (61), the output end of the second drive assembly (61) being transmission-connected to a gear (62), the gear (62) being connected to the sliding door (11), a rack (63) cooperating with the gear being arranged on the mounting frame (100) along the length direction, and the second drive assembly (61) drives the gear (62) to rotate so as to drive the sliding door (11) to move.

2. The train platform door system according to claim 1, characterized in that: It also comprises a first mounting seat (41) and a second mounting seat (42), wherein the first rotating wheel (31) is connected to the sliding door (11) via the first mounting seat (41), and the second rotating wheel (32) is connected to the sliding door (11) via the second mounting seat (42).

3. The train platform door system according to claim 2, characterized in that: One end of the first mounting seat (41) away from the sliding door (11) extends upward to above the first opening and closing door (12) and is rotationally engaged with the first rotating wheel (31); and one end of the second mounting seat (42) away from the sliding door (11) extends upward to above the second opening and closing door (13) and is rotationally engaged with the second rotating wheel (32).

4. The train platform door system according to claim 3, characterized in that: It also includes a first connecting member (51) and a second connecting member (52), One end of the first connecting member (51) is connected to the first opening and closing door (12), and the other end is bent toward the second rotating wheel (32) and connected to the upper belt body (331) of the conveyor belt (33); One end of the second connecting member (52) is connected to the second opening and closing door (13), and the other end is bent toward the first rotating wheel (31) and connected to the lower belt body (332) of the conveyor belt (33).

5. The train platform door system according to claim 1, characterized in that: It also comprises a first hanging member (71) and a first cantilever (72), wherein the first hanging member (71) is arranged at the top end of the sliding door (11), the first cantilever (72) is arranged on the mounting frame (100), and the first hanging member (71) is hung on the first cantilever (72).

6. The train platform door system according to claim 5, characterized in that: A first guide rail (721) is provided on the first cantilever (72), and the first guide rail (721) faces upwards; a first roller (711) is provided on the first hanging member (71), and the first roller (711) and the first guide rail (721) are in rolling cooperation; or, The first cantilever (72) is provided with a slide rail, and the slide rail faces upwards; the first hanging component (71) is provided with a sliding block, and the sliding block is slidably matched with the slide rail.

7. The train platform door system according to claim 1, characterized in that: Also includes: a second hanging member (81) and a second cantilever (82), wherein the second hanging member (81) is arranged at the top end of the first opening and closing door (12), the second cantilever (82) is arranged on the mounting frame (100), and the second hanging member (81) is hung on the second cantilever (82); A third hanging member (91) and a third cantilever (92), wherein the third hanging member (91) is arranged at the top end of the second opening and closing door (13), the third cantilever (92) is arranged on the mounting frame (100), and the third hanging member (91) is hung on the third cantilever (92).

8. The train platform door system according to claim 7, characterized in that: A second guide rail (821) is provided on the second cantilever (82), and the second guide rail (821) faces upwards; a second roller (811) is provided on the second hanging member (81), and the second roller (811) and the second guide rail (821) are in rolling cooperation; The third cantilever (92) is provided with a third guide rail (921), and the third guide rail (921) faces upwards; the third hanging component (91) is provided with a third roller (911), and the third roller (911) and the third guide rail (921) are in rolling cooperation.

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