A platform screen door structure with separate drive and a staggered platform screen door system with separate drive

Abstract

This application relates to the field of platform screen door technology, and more particularly to a platform screen door structure with separate drive units and a staggered platform screen door system with separate drive units. The platform screen door structure with separate drive units includes a door body slidably mounted on a support base connected to the platform structure layer. The door body includes a door frame, the interior of which forms a cavity for accommodating a drive assembly. The drive assembly includes a power output unit and a downward-moving gear driven by the power output unit. The power output unit is located within the cavity, and the downward-moving gear is located below the support base. It also includes a rack arranged along the length of the platform and located below the support base. The downward-moving gear meshes with the rack. By partially housing the drive assembly within the door body and partially housing it below the support base, the thickness of the platform finishing layer is reduced, thus saving space.

Description

Technical Field

[0001] This application relates to the field of platform screen door technology, and in particular to a platform screen door structure with separate drive and a staggered platform screen door system with separate drive. Background Technology

[0002] In the safety protection and operation guarantee system of high-speed railway ground platforms, platform screen doors are the core equipment to ensure passenger boarding and alighting safety and regulate train operation order. The layout and design of their drive system directly affect the construction difficulty, structural safety and later operation and maintenance efficiency of the platform.

[0003] Currently, most mainstream platform screen door drive systems adopt a bottom-mounted fixed design, meaning that the drive system's power unit (such as the drive motor), door unit controller, and wiring must be centrally installed in a dedicated channel below the platform surface. However, the thickness of the existing high-speed rail station platform decoration layer is typically only about 100mm, while the overall thickness of the existing drive system (including the power unit, etc.) is difficult to reduce to within 100mm. Even if the thickness is controlled within this range through integration technology, the ultra-high density of component layout will lead to insufficient heat dissipation space between components and increased electromagnetic interference, resulting in a significant decrease in the reliability of the drive system and failing to meet the long-term operational requirements of "high stability" for high-speed rail equipment.

[0004] To meet the space requirements of the drive system, the existing solution can only be achieved by significantly increasing the depth of the excavation trench under the platform. However, an excessively deep excavation trench will directly damage the original structural integrity of the platform, requiring additional reinforcement and modification of the platform foundation. This not only increases construction costs but may also create potential structural safety hazards.

[0005] Therefore, developing a platform screen door that does not excessively occupy the excavation space is an urgent technical problem that needs to be solved. Utility Model Content

[0006] The purpose of this application is to provide a platform screen door structure with separate drive and a staggered platform screen door system with separate drive, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] In a first aspect, a platform screen door structure with separate drive components includes a door body slidably mounted on a support base connected to a platform structure layer, the door body including a door frame, the interior of the door frame forming an inner cavity for accommodating drive components.

[0009] The drive assembly includes a power output section and a downward gear that is pulsatingly connected to the power output section; wherein the power output section is located in the inner cavity, and the downward gear is located below the support base;

[0010] It also includes a rack arranged along the length of the platform and located below the support base;

[0011] The lower gear meshes with the rack.

[0012] Furthermore, the drive assembly also includes a first connector having a hollow region, on which a gear shaft is fitted. One end of the gear shaft is connected to the power output unit for transmission, and the other end is connected to the downward-probing gear.

[0013] Furthermore, a plurality of positioning guide wheel assemblies are provided on one side of the center line of the door and in front of and / or behind the drive assembly along the direction of door movement.

[0014] Each of the positioning guide wheel assemblies includes a second connector, one end of which is fixedly connected to the door frame, and the other end is movably connected to a positioning wheel, wherein an annular groove is formed on the rim of the positioning wheel.

[0015] The upper surface of the support base is provided with a positioning guide rail;

[0016] When the lower gear moves along the length of the rack, the positioning guide extends into the annular groove, restricting the movement of the drive assembly in the direction perpendicular to the length of the rack.

[0017] Furthermore, a support guide wheel assembly is provided on the other side of the center line of the door. The support guide wheel assembly includes a third connector, one end of which is connected to the door frame, and the other end is movably connected to a support wheel. The surface of the support wheel is flat.

[0018] The upper surface of the support base is provided with an abutment portion at the position corresponding to the support wheel;

[0019] When the downward gear moves along the length of the rack, the support wheel makes rolling contact with the abutment portion.

[0020] Furthermore, it includes an adaptive guide wheel assembly, with the adaptive guide wheel assembly provided on both sides perpendicular to the moving direction of the drive assembly;

[0021] The adaptive guide wheel assembly includes a guide wheel seat, a guide wheel plate, a lower guide wheel shaft, a lower guide wheel, a lever component, an elastic component, an adjusting head, and an adjusting bolt;

[0022] The guide wheel seat is installed at the bottom of the inner cavity, the guide wheel plate is slidably connected to the guide wheel seat, and the guide wheel plate extends vertically from the inner cavity below the support base;

[0023] The lower guide wheel is connected to the lower end of the guide wheel plate via the lower guide wheel shaft. The lower guide wheel rotates and abuts against the lower surface of the support base. One end of the lever is connected to the upper end of the guide wheel plate. The adjusting bolt passes through the adjusting head and the other end of the lever in sequence and is connected to the guide wheel seat. The elastic element is sleeved on the adjusting head, with its upper end abutting against the adjusting head and its lower end abutting against the lever.

[0024] Furthermore, the support base includes a first substrate and a second substrate;

[0025] A guide groove is formed between the first substrate and the second substrate;

[0026] An auxiliary guide wheel is installed on the side of the guide wheel plate. While the lower guide wheel rotates and abuts against the lower surface of the support base, the auxiliary guide wheel rolls against the guide groove.

[0027] Furthermore, the first substrate includes a first side and a second side, wherein one end of the second side is perpendicularly connected to the first side, and the other end is perpendicularly connected to a third side.

[0028] The first side forms the upper surface of the first substrate, the second side forms the side surface of the first substrate, and the third side forms the lower surface of the first substrate.

[0029] The positioning wheel, the auxiliary guide wheel, and the lower guide wheel together form an assembly space that constrains the first substrate;

[0030] The first side is in rolling contact with the positioning wheel, the second side is in rolling contact with the auxiliary guide wheel, and the third side is in rolling contact with the lower guide wheel.

[0031] Furthermore, this includes cable chains;

[0032] The cable chain is housed in a groove below the support base. The first end of the cable chain is fixedly connected to the door frame via a fourth connector, and the second end of the cable chain is fixedly connected to the side wall of the groove.

[0033] Furthermore, the cable chain is hollow inside and has embedded cables, which are electrically connected to the drive assembly.

[0034] In addition, a staggered platform door system with separate drive is proposed, including a first door unit and a second door unit arranged alternately along the length of the platform.

[0035] The first gate unit and the second gate unit have the same structure and are staggered in the direction of the width of the support base perpendicular to the length of the platform.

[0036] Each of the first door unit and the second door unit includes the aforementioned separately driven platform door structure.

[0037] The technical solutions provided in this application have the following advantages compared with the prior art:

[0038] The platform screen door structure with a separate drive unit provided in this application reduces the thickness of the platform's decorative layer by partially housing the drive assembly within the door body and partially housing it below the support base. Specifically, it includes a door body slidably mounted on a support base connected to the platform structure layer. The door body includes a door frame, the interior of which forms a cavity to accommodate the drive assembly. The drive assembly includes a power output unit and a downward-moving gear driven by the power output unit. The power output unit is located within the cavity, and the downward-moving gear is located below the support base. It also includes a rack arranged along the length of the platform and located below the support base; the downward-moving gear meshes with the rack. This technical solution places the vulnerable power output unit within the cavity, freeing up most of the space below the platform. It eliminates the need to consider the installation space of a bulky power unit, thus allowing the thickness of the platform's decorative layer to be controlled within 100mm or even thinner. This eliminates the need for destructive excavation and reinforcement of the existing platform structure, reducing construction difficulty and cost.

[0039] Furthermore, based on the aforementioned single-door structure, a staggered platform screen door system with separate drive is proposed, comprising a first door unit and a second door unit arranged alternately along the length of the platform; the first door unit and the second door unit have the same structure and are staggered in the direction of the width of the support base perpendicular to the length of the platform; each of the first door unit and the second door unit includes the aforementioned platform screen door structure with separate drive, and the downward gear of each door in the same door unit can share the same rack. This solves the problem of existing staggered platform screen doors, where each door corresponds to a complete and heavy downward drive mechanism (including motor, controller, etc.), and adjacent doors in the same row must have their drive channels spaced out in order to prevent interference between their movements. This inevitably requires excavating two trenches of considerable depth and volume under the platform, causing serious damage to the platform structure.

[0040] This technical solution, through a "split drive" design, successfully relocates a significant portion of the drive system from under the platform to inside the door. Only the rack serving as the transmission track remains under the platform, requiring minimal spatial thickness. In a staggered layout, adjacent doors within the same unit can share the same rack, and racks from different units can be arranged parallel or staggered within the same shallow space, without the need for vertical layering. This reduces the overall space occupied under the platform, simplifies construction, avoids large-scale reinforcement of the platform structure, and enables the direct application of staggered platform screen door systems on existing thin platforms. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0042] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0044] Figure 1 This is a schematic diagram of a platform door structure with separate drive units provided in an embodiment of this application;

[0045] Figure 2 for Figure 1 Enlarged schematic diagram of 3.

[0046] Figure 3 This is a structural schematic diagram of the positioning guide wheel assembly and the supporting guide wheel assembly of this application;

[0047] Figure 4 This is a schematic diagram of the adaptive guide wheel assembly provided in an embodiment of this application;

[0048] Figure 5 This is a cross-sectional schematic diagram of a platform door with separate drive units provided in an embodiment of this application;

[0049] Figure 6 A schematic diagram of the adaptive guide wheel assembly from another angle, provided as an embodiment of this application;

[0050] Figure 7This is a schematic diagram showing the positional arrangement of the first door unit and the second door unit in the staggered platform door system with separate drive configuration provided in the embodiments of this application.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Door body; 11. Door frame; 12. Inner cavity;

[0053] 2. Support base; 21. Positioning guide rail; 22. Upper surface; 221. Abutting part; 23. Lower surface; 24. First substrate; 241. First side; 242. Second side; 243. Third side; 25. Second substrate; 26. Guide groove; 27. Groove;

[0054] 3. Drive assembly; 31. Motor; 32. Downward gear; 33. Rack; 34. First connecting piece; 35. Gear shaft;

[0055] 4. Positioning guide wheel assembly; 41. Second connecting piece; 42. Positioning wheel; 421. Annular groove;

[0056] 5. Supporting guide wheel assembly; 51. Third connecting piece; 52. Supporting wheel;

[0057] 6. Adaptive guide wheel assembly; 61. Guide wheel seat; 62. Guide wheel plate; 63. Lower guide wheel shaft; 64. Lower guide wheel; 65. Lever component; 66. Elastic component; 67. Adjusting head; 68. Adjusting bolt; 69. Auxiliary guide wheel;

[0058] 7. Cable chain;

[0059] 8. Fourth connector;

[0060] 100, First gate unit; 200, Second gate unit. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0063] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0064] This application provides a platform door structure with separate drive units to solve the problem in the prior art where the drive system of the platform door occupies too much space in the platform decoration layer and damages the original structural integrity of the platform.

[0065] In existing technologies, a platform door with the entire drive system housed within the door body 1 is called an upper-mounted drive platform door, while one with the entire drive system housed within the platform's finishing layer is called a lower-mounted drive platform door. The drive-split platform door structure of this application, however, divides the drive assembly 3 into two parts: the larger, more space-consuming component is installed within the door body 1, while the smaller, less space-consuming component is installed within the platform's finishing layer. This reduces the space occupied by the drive system on the platform's finishing layer.

[0066] like Figures 1 to 5As shown, specifically, this type of platform screen door structure with separate drive includes a door body 1, which is slidably mounted on a support base 2 connected to the platform structure layer. The door body 1 includes a door frame 11, the interior of which forms an inner cavity 12 for accommodating a drive assembly 3. The drive assembly 3 includes a power output part and a downward gear 32 that is drivenly connected to the power output part. The power output part is located in the inner cavity 12, and the downward gear 32 is located below the support base 2. It also includes a rack 33 arranged along the length of the platform and located below the support base 2. The downward gear 32 is meshed with the rack 33.

[0067] It should be noted that, in this embodiment, the power output unit refers to the motor 31, which is fixed to the bottom of the door frame 11 and located within the inner cavity 12. When the motor 31 is energized, it drives the downward gear 32 to rotate.

[0068] When the gate 1 needs to move, the power output unit in the inner cavity 12 drives the downward gear 32 to rotate around the rack 33 located below the support base. Since the rack 33 is fixed, the meshing action of the downward gear 32 and the rack 33 converts the rotational motion into linear motion that propels the entire gate 1 along the support base 2. Because the motor, which occupies a large volume of the drive system, is located in the gate, while the thinner transmission parts (such as the rack) are located below the support base, this design reduces the drive system's requirement for the platform's excavation depth. The excavation depth of the support base is changed from accommodating the entire large drive system to only satisfying the meshing space of the gear and rack 33. This allows the trench depth to be strictly controlled within 100mm, eliminating the need for deep excavation and reinforcement of the platform structure, and greatly reducing construction difficulty and cost.

[0069] Furthermore, existing technologies typically place the entire drive system below the support base 2, i.e., embedded within the platform's finishing layer. This poses a significant challenge to the waterproofing performance of the motor 31 within the system. Simultaneously, because the drive system is embedded within the finishing layer, extremely high requirements are placed on the flatness of the platform's finishing layer floor. Unevenness can easily lead to problems such as jamming and malfunctions in the drive system's operation, thus increasing the reliance on the platform screen door's installation precision. To address these issues, this technical solution integrates the motor 31 within the door body 1, with only the downward-extending gear 32 extending below the support base 2 to mesh with the rack 33. This design not only effectively avoids the technical difficulties arising from waterproofing and flatness requirements structurally, but also prevents the motor from directly contacting ground moisture, fundamentally improving the structural safety and long-term operational reliability of the platform screen door system.

[0070] Furthermore, in order to make reasonable use of the space on the platform's interior decoration level, such as... Figure 2As shown, the drive assembly 3 also includes a first connector 34, which has a hollow area. A gear shaft 35 is mounted in the hollow area. One end of the gear shaft 35 is connected to the power output unit, and the other end is connected to the downward gear 32.

[0071] Specifically, one end of the first connector 34 is connected to the housing of the motor 31, and the other end is connected to the downward gear 32. This two-end connection design ensures that the motor 31 and the downward gear 32 maintain a precise coaxial relationship during operation, avoiding the impact of axial misalignment on overall operational stability. Simultaneously, the gear shaft 35 is directly connected to the output shaft of the motor 31. The power generated by the motor 31 after startup can be transmitted to the downward gear 32 through the gear shaft 35, forming a stable and reliable power transmission link and ensuring continuous power output. Furthermore, the first connector 34 itself has a hollow area, which provides a compact installation space for the gear shaft 35. The coaxial position of the gear shaft 35 and the first connector 34 reduces the lateral space occupied by the platform's decorative layer and provides a clear transmission path for the power output unit.

[0072] Furthermore, such as Figure 1 and Figure 3 As shown, a plurality of positioning guide wheel assemblies 4 are provided on one side of the center line F of the door body 1 and in the direction of movement of the drive assembly 3 along the door body 1; each positioning guide wheel assembly 4 includes a second connector 41, one end of which is fixedly connected to the door frame 11, and the other end is movably connected to a positioning wheel 42, and an annular groove 421 is formed on the rim of the positioning wheel 42; a positioning guide rail 21 is provided on the upper surface 22 of the support base 2; when the downward probing gear 32 moves along the length direction of the rack 33, the positioning guide rail 21 extends into the annular groove 421, restricting the movement of the drive assembly 3 in the direction perpendicular to the length direction of the rack 33.

[0073] Specifically, a plurality of positioning guide wheel assemblies 4 are provided along the length of the door frame 11, and these positioning guide wheel assemblies 4 are located at positions different from those of the motor 31. It should be noted that the center position in the width direction passing through the inner cavity 12 is defined as the centerline of the door body 1 (e.g., Figure 1 The F-line is shown. In this embodiment, a positioning guide wheel assembly 4 is provided on one side of the center line of the door body 1. The positioning guide wheel assembly 4 is positioned in the moving direction of the door body 1. Depending on the length of the door body 1, the number of positioning guide wheel assemblies 4 can be set to two, three, four, etc., according to actual usage needs. This is to ensure that the door body 1 does not sway laterally in the horizontal plane when it is moving on the support base 2, thus ensuring operating accuracy and safety clearance.

[0074] The second connecting member 41 is connected to the door frame 11 at one end and to a positioning wheel 42 at the other end. The positioning wheel 42 can rotate relative to the second connecting member 41. The positioning wheel 42 and the positioning guide rail 21 are arranged in the same vertical direction and are adapted to each other to ensure that when the door 1 moves, the positioning guide rail 21 is just embedded in the annular groove 421. In addition, the positioning guide wheel is arranged to extend along the length of the support base 2. Therefore, when the door 1 moves, the stationary positioning guide rail 21 will be continuously embedded in the annular groove 421 of the positioning wheel 42. The two side walls of the annular groove 421 and the two sides of the positioning guide rail 21 form a tight rolling fit, dynamically restricting any lateral displacement of the door 1 perpendicular to the running direction.

[0075] This technical solution provides lateral constraint for the door body 1 through the cooperation of the annular groove 421 and the positioning guide rail 21, effectively suppressing the swaying that may occur during the start-up, stop or operation of the door body 1, ensuring the constant safety gap between the door body 1 and the train door, and greatly improving the smoothness, safety and accuracy of operation.

[0076] Furthermore, such as Figure 3 As shown, a support guide wheel assembly 5 is provided on the other side of the center line of the door body 1. The support guide wheel assembly 5 includes a third connector 51. One end of the third connector 51 is connected to the door frame 11, and the other end is movably connected to a support wheel 52. The surface of the support wheel 52 is flat. The upper surface 22 of the support base 2 is provided with an abutment part 221 at the position corresponding to the support wheel 52. When the downward gear 32 moves along the length direction of the rack 33, the support wheel 52 rolls into contact with the abutment part 221.

[0077] It should be noted that the installation position of the support guide wheel assembly 5 is opposite to that of the positioning guide wheel assembly 4, and the two are located on both sides of the center line F of the door body 1. The support wheel 52 is connected to the third connecting member 51 through a wheel axle, so the support wheel 52 can rotate flexibly relative to the third connecting member 51.

[0078] During the operation of the gate 1, the downward-moving gear 32 meshes with the rack 33, and the rack 33 applies a lateral thrust to the gate 1. Driven by the motor 31, this lateral thrust can be decomposed into two components: one is converted into an effective driving force for the gate 1 to move forward, and the other component is a tendency force that causes the gate 1 to tilt to one side.

[0079] Therefore, this solution provides a support guide wheel assembly 5 on the side of the door 1 that is prone to tipping over. When the door 1 is subjected to a tilting force perpendicular to the support base 2, the support wheel 52 effectively converts the tilting force into a thrusting force along the moving direction of the door 1 through rolling contact with the abutment part 221, thereby improving the smoothness of the door 1's operation and enhancing the overall movement stability.

[0080] Furthermore, such as Figure 4 As shown, it includes an adaptive guide wheel assembly 6, which is provided on both sides perpendicular to the moving direction of the drive assembly 3;

[0081] The adaptive guide wheel assembly 6 includes a guide wheel seat 61, a guide wheel plate 62, a lower guide wheel shaft 63, a lower guide wheel 64, a lever 65, an elastic element 66, an adjusting head 67, and an adjusting bolt 68. The guide wheel seat 61 is installed at the bottom of the inner cavity 12, and the guide wheel plate 62 is slidably connected to the guide wheel seat 61, extending vertically from the inner cavity 12 below the support base 2. The lower guide wheel 64 is connected to the lower guide wheel shaft 63. At the lower end of the guide wheel plate 62, the lower guide wheel 64 rotates and abuts against the lower surface 23 of the support base 2. One end of the lever 65 is connected to the upper end of the guide wheel plate 62. The adjusting bolt 68 passes through the adjusting head 67 and the other end of the lever 65 in sequence and is connected to the guide wheel seat 61. The elastic member 66 is sleeved on the adjusting head 67, and the upper end of the elastic member 66 abuts against the adjusting head 67, and the lower end abuts against the lever 65.

[0082] Specifically, the lower guide wheel 64 is press-fitted with a bearing and forms a hole-shaft fit with the lower guide wheel shaft 63, allowing it to rotate freely. The lower guide wheel shaft 63 is fixed to the guide wheel seat 61 by threads or other means, and the guide wheel seat 61 is fixed to the door frame 11 by bolts.

[0083] When the distance between the adjusting head 67 and the guide wheel seat 61 is adjusted by adjusting bolt 68, the compression distance of the elastic element 66 changes, and the elastic force also changes, so that the guide wheel plate 62 moves up and down along the guide wheel seat 61. That is, firstly, the guide wheel seat 61 is fixedly installed in the predetermined position of the door frame 11 by bolts or other fastening methods. Then, the guide wheel plate 62 is slidably connected to the guide wheel seat 61, ensuring that the guide wheel plate 62 can slide up and down along the guide wheel seat 61, but will not fall off. The lower guide wheel 64 is connected to the lower end of the guide wheel plate 62 by the lower guide wheel shaft 63, ensuring that the lower guide wheel 64 can rotate freely. The lower guide wheel shaft 63 can be fixed to the guide wheel plate 62 by threads, pins or other fastening methods, while ensuring that the lower guide wheel 64 maintains rotational contact with the lower surface 23 of the support base 2. One end of the lever 65 is connected to the upper end of the guide wheel plate 62, and the other end is connected to the guide wheel seat 61 via an adjusting bolt 68. The adjusting bolt 68 passes through the adjusting head 67 and the other end of the lever 65 in sequence and is fixed with a nut or other means. The elastic element 66 is sleeved on the adjusting head 67, with its upper end abutting against the adjusting head 67 and its lower end abutting against the lever 65. Thus, when the adjusting bolt 68 is adjusted, the elastic element 66 is compressed or stretched, thereby generating a changing elastic force. By rotating the adjusting bolt 68, the distance from the adjusting head 67 to the guide wheel seat 61 can be adjusted. This change in distance will cause a change in the compression distance of the elastic element 66, thereby changing the elastic force. After the lower guide wheel 64 assembly is adjusted, the lower guide wheel 64 will rotate tightly against the lower surface 23 of the support base 2, providing stable support and guidance for the door frame 11.

[0084] More specifically, the lower guide wheel 64 assembly can be dynamically adjusted by adjusting the combination of bolt 68 and elastic element 66. This adjustment method allows the gate frame 11 to be finely adjusted as needed during installation and use, ensuring a tight fit and stable movement between it and the support base 2. Furthermore, the lower guide wheel 64 is fitted with a bearing and forms a hole-shaft fit with the lower guide wheel shaft 63, allowing it to rotate freely. This design reduces friction and wear, improving the service life of the lower guide wheel 64. Simultaneously, the tight contact between the lower guide wheel 64 and the support base 2 enhances the stability of the gate frame 11. In addition, the design of this lower guide wheel 64 assembly is highly adaptable, accommodating gate frames 11 of different shapes and sizes, enabling its widespread application in platform screen door systems across various rail transit sectors.

[0085] Furthermore, an auxiliary guide wheel 69 is installed on the side of the guide wheel plate 62. The auxiliary guide wheel 69 can move in contact with the side of the support base 2, transforming the sliding friction between the guide wheel plate 62 and the side of the support base 2 into rolling friction, thus ensuring the smooth movement of the door 1.

[0086] In this embodiment, as Figure 4As shown, there are two adaptive guide wheel assemblies 6 arranged in the width direction of the support base 2. The two adaptive guide wheel assemblies 6 are arranged symmetrically to assist the door in stable operation from both sides of the door.

[0087] In a specific embodiment, such as Figure 5 and Figure 6 As shown, the support base 2 includes a first substrate 24 and a second substrate 25; the first substrate 24 and the second substrate 25 form a guide groove 26; while the lower guide wheel 64 rotates and abuts against the lower surface 23 of the support base 2, the auxiliary guide wheel 69 rolls and abuts against the side of the guide groove 26.

[0088] It should be understood that when the door 1 moves, it is prone to lateral displacement and swaying. A single guide wheel constraint cannot balance the multi-directional forces that cause trajectory deviation. The guide groove 26 formed by the first base plate 24 and the second base plate 25 structurally limits the lateral displacement range of the door frame 11, providing a clear spatial boundary; the lower guide wheel 64 abuts against the lower surface 23 of the support base 2, bears the vertical load and guides the door frame 11 to move in a preset direction; the auxiliary guide wheel 69 rolls against the inner wall of the guide groove 26, forming a "lateral clamping" to limit lateral displacement. The two respectively constrain the door frame 11 vertically and laterally, and combined with the spatial limitation of the guide groove 26, strictly limit the movement trajectory within the guide groove 26. This design, through the combination of guide groove 26 and double guide wheels (auxiliary guide wheel 69 and lower guide wheel 64), can suppress the displacement of the door frame 11 from multiple directions, improve the operational stability, and ensure that the door body 1 maintains a precise trajectory when subjected to external force interference; both guide wheels are in rolling friction contact, which greatly reduces resistance and wear, reduces operating noise and extends component life; the guide groove 26 design, together with the adaptive component, can compensate for installation errors or minor deformations, enhancing adaptability to complex working conditions.

[0089] Furthermore, the first substrate 24 includes a first side 241 and a second side 242, wherein one end of the second side 242 is perpendicularly connected to the first side 241, and the other end is perpendicularly connected to a third side 243; the first side 241 forms the upper surface 22 of the first substrate 24, the second side 242 forms the side surface of the first substrate 24, and the third side 243 forms the lower surface 23 of the first substrate 24; the positioning wheel 42, the auxiliary guide wheel 69, and the lower guide wheel 64 together form an assembly space that constrains the first substrate 24; wherein the first side 241 is in rolling contact with the positioning wheel 42, the second side 242 is in rolling contact with the auxiliary guide wheel 69, and the third side 243 is in rolling contact with the lower guide wheel 64.

[0090] In actual operation, when the door frame 11 moves along the support base 2, on one side of the support base 2, the positioning wheel 42, the auxiliary guide wheel 69, and the lower guide wheel 64 always maintain rolling contact with the first side 241, the second side 242, and the third side 243 of the first base plate 24: when the door frame 11 moves, the positioning wheel 42 rolls along the upper surface 22 of the first side 241, restricting the door body 1 from moving upward; the auxiliary guide wheel 69 rolls synchronously along the second side 242 (that is, the side of the guide groove 26), dynamically constraining lateral offset and preventing the door frame 11 from swaying left and right; the lower guide wheel 64 rolls along the lower surface 23 of the third side 243, bearing the vertical load of the door frame 11 and preventing it from shifting downward. The dynamic enveloping constraint formed by the three will adjust the contact position in real time as the gantry frame 11 moves, always maintaining the three-dimensional limit on the first base plate 24. Even if the gantry frame 11 is disturbed by external forces (such as the airflow impact generated by a vehicle passing by), the offset trend in any direction will be offset by the contact reaction force of the corresponding guide wheel, ensuring that the gantry frame 11 always moves smoothly along the preset trajectory. This avoids rigid collision with the support base 2 and, through the dynamic adaptation of rolling friction, controls the motion resistance and wear to the lowest level, achieving stable operation with high precision and low loss.

[0091] Similarly, the adaptive guide wheel assembly 6 on the other side of the support base 2, with its auxiliary guide wheel 69 cooperating with the support wheel 52 and the lower guide wheel 64, together forms a constraint space to limit the position of the other side of the first substrate 24. Figure 6 As shown, the adaptive guide wheel assemblies 6 on both sides of the first base plate 24 work together: one side of the adaptive guide wheel assembly 6 cooperates with the support guide wheel assembly 5, and the other side of the adaptive guide wheel assembly 6 cooperates with the positioning guide wheel assembly 4. This dual-sided cooperation structure can stably constrain the door body on the first base plate 24 and guide its movement, ultimately effectively preventing the door body from shaking during movement.

[0092] Furthermore, such as Figure 5 As shown, to ensure that adjacent door panels 1 do not interfere with each other during movement, this technical solution also involves a cable chain 7. The cable chain 7 is housed in a groove 27 below the support base 2. The first end of the cable chain 7 is fixedly connected to the door frame 11 via a fourth connector 8, and the second end of the cable chain 7 is fixedly connected to the side wall of the groove 27, forming a constraint and protection structure that moves with the door panels 1. Furthermore, the cable chain 7 is hollow inside and has embedded cables, which are electrically connected to the drive assembly 3. It should be understood that by installing the cables in the cable chain 7, the cable chain 7 can protect the cables from being pulled during the movement of the door panels 1, preventing cable breakage or poor electrical contact.

[0093] When the door 1 moves, the cable chain 7 will extend and deform synchronously. On the one hand, the length of the cable chain 7 limits the maximum travel of the door 1, so that the movement range of adjacent doors 1 is strictly limited within a safe range to avoid collisions. On the other hand, the cables contained inside the cable chain 7 move in an orderly manner with the cable chain 7, and will not become disorderly tangled or excessively pulled due to the movement of the door 1.

[0094] In one specific embodiment, the total length of the cable chain 7 is 3.1 meters. Excluding the length at the fixed position, the left and right travel distances of the cable chain 7 are 2.8 meters each.

[0095] When adjacent door bodies 1 are each equipped with a cable chain 7, their maximum travel distance is constrained by the cable chain 7. As long as sufficient space is provided for the maximum travel distance of the cable chain 7, it can be ensured that the adjacent door bodies 1 will not interfere with each other during movement, thus guaranteeing operational safety. At the same time, the design of the cable chain 7 being hidden within the groove 27 also makes the overall structure more compact, suitable for scenarios such as platform screen doors with limited space.

[0096] It should also be noted that in this embodiment, the groove 27 is located below the support base 2. However, since the drag chain 7 itself is relatively thin, generally between 2mm and 3.5mm, the drag chain 7 does not occupy too much vertical space of the platform decoration layer. Moreover, the groove 27 is located parallel to the rack 33 in the width direction of the support base 2. Therefore, it only occupies the horizontal space of the platform decoration layer and does not increase the vertical space occupied by the platform decoration layer, thus avoiding the impact on the vertical space layout of the platform.

[0097] In addition, in order to accommodate the opening positions of doors on different vehicle models, existing technologies employ a staggered platform door design.

[0098] Detailed, such as Figure 7 As shown, multiple doors 1 are provided along the length of the platform. The multiple doors 1 closest to the train are defined as the first door unit 100, and the multiple doors 1 closest to the platform are defined as the second door unit 200.

[0099] The first door unit 100 and the second door unit 200 are arranged alternately along the length of the platform. The first door unit 100 and the second door unit 200 have the same structure and are staggered in the width direction of the support base 2 perpendicular to the length of the platform. The first door unit 100 includes a plurality of first doors, which are arranged at intervals, and each door 1 includes the aforementioned platform door structure with separate drive.

[0100] In detail, as Figures 1 to 7As shown, two independent racks 33 are arranged in parallel along the width direction of the support base 2. The two racks 33 correspond to two door units respectively, one for the movement of the first door unit 100 and the other for the movement of the second door unit 200, providing a basis for the independent operation of the two units.

[0101] Each door 1 is equipped with a motor 31 and a downward gear 32. The downward gear 32 can rotate at a preset position corresponding to the rack 33, thereby driving the door 1 to move. The movement stroke of the door 1 is limited by the cable chain 7. For example, in a cable chain 7 with a stroke length of 2.8 meters, the maximum stroke of the door 1 to the left is 2.8 meters, and the maximum stroke to the right is also 2.8 meters. Adjacent door 1s in the same door unit are arranged at intervals, which also ensures that the movement of adjacent door 1s belonging to the same door unit does not interfere with each other.

[0102] In practical use, such as Figure 7 As shown, for example, door number one can only move left to position A or right to position B(A), and will not cross position B(A) to move to the position of door number two. Similarly, door number two can only move left to position B(A) or right to position A(B), and will not cross position B(A) to move to the position of door number one or cross position A(B) to move to the position of door number three. The design of the drag chain 7 ensures that the downward gear 32 of each door body 1 moves orderly on the rack 33 according to the preset position, and the movement between each door body 1 will not interfere with each other.

[0103] Furthermore, since each door 1 in the second door unit 200 (e.g., door 5, door 6, door 7, and door 8) shares another rack 33, and each door 1 is also affected by the cable chain 7, their movements do not interfere with each other. As for different door units, since the first door unit 100 and the second door unit 200 are arranged in a staggered manner, their movements do not interfere with each other.

[0104] This design approach has been fully demonstrated in practical applications. At a certain transfer station, due to limited platform space and the need to accommodate trains from different lines, traditional platform screen door systems were simply unsuitable for installation due to the limited thickness of the platform's finishing layer. However, by adopting a staggered platform screen door system with separate drive units, the limited platform space is effectively utilized through staggered placement and partial drive units within the inner cavity 12 of the door body 1, resulting in a more rational platform layout. Furthermore, the installation and maintenance of this platform screen door system are relatively simple, reducing operating costs.

[0105] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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.

[0106] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "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.

[0107] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical 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.

[0108] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0109] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a 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. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0110] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0111] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A platform screen door structure with separate drive units, characterized in that, The system includes a door body that is slidably mounted on a support base connected to the platform structure layer. The door body includes a door frame, the interior of which is configured to accommodate a drive assembly. The drive assembly includes a power output section and a downward gear that is pulsatingly connected to the power output section; wherein the power output section is located in the inner cavity, and the downward gear is located below the support base; It also includes a rack arranged along the length of the platform and located below the support base; The lower gear meshes with the rack.

2. The platform screen door structure with separate drive units according to claim 1, characterized in that: The drive assembly further includes a first connector having a hollow region, on which a gear shaft is fitted. One end of the gear shaft is connected to the power output unit, and the other end is connected to the downward-probing gear.

3. The platform screen door structure with separate drive units according to claim 1, characterized in that: A plurality of positioning guide wheel assemblies are provided on one side relative to the center line of the door and in the direction of movement of the drive assembly along the door body; Each of the positioning guide wheel assemblies includes a second connector, one end of which is fixedly connected to the door frame, and the other end is movably connected to a positioning wheel, wherein an annular groove is formed on the rim of the positioning wheel. The upper surface of the support base is provided with a positioning guide rail; When the lower gear moves along the length of the rack, the positioning guide extends into the annular groove, restricting the movement of the drive assembly in the direction perpendicular to the length of the rack.

4. The platform screen door structure with separate drive units according to claim 3, characterized in that: A support guide wheel assembly is provided on the other side of the center line of the door. The support guide wheel assembly includes a third connector. One end of the third connector is connected to the door frame, and the other end is movably connected to a support wheel. The surface of the support wheel is flat. The upper surface of the support base is provided with an abutment portion at the position corresponding to the support wheel; When the downward gear moves along the length of the rack, the support wheel makes rolling contact with the abutment portion.

5. The platform screen door structure with separate drive units according to claim 3, characterized in that: It includes an adaptive guide wheel assembly, with the adaptive guide wheel assembly provided on both sides perpendicular to the moving direction of the drive assembly; The adaptive guide wheel assembly includes a guide wheel seat, a guide wheel plate, a lower guide wheel shaft, a lower guide wheel, a lever component, an elastic component, an adjusting head, and an adjusting bolt; The guide wheel seat is installed at the bottom of the inner cavity, the guide wheel plate is slidably connected to the guide wheel seat, and the guide wheel plate extends vertically from the inner cavity below the support base; The lower guide wheel is connected to the lower end of the guide wheel plate via the lower guide wheel shaft. The lower guide wheel rotates and abuts against the lower surface of the support base. One end of the lever is connected to the upper end of the guide wheel plate. The adjusting bolt passes through the adjusting head and the other end of the lever in sequence and is connected to the guide wheel seat. The elastic element is sleeved on the adjusting head, with its upper end abutting against the adjusting head and its lower end abutting against the lever.

6. The platform screen door structure with separate drive units according to claim 5, characterized in that: The support base includes a first substrate and a second substrate; A guide groove is formed between the first substrate and the second substrate; An auxiliary guide wheel is installed on the side of the guide wheel plate. While the lower guide wheel rotates and abuts against the lower surface of the support base, the auxiliary guide wheel rolls against the guide groove.

7. The platform screen door structure with separate drive according to claim 6, characterized in that: The first substrate includes a first side and a second side, wherein one end of the second side is perpendicularly connected to the first side, and the other end is perpendicularly connected to a third side; The first side forms the upper surface of the first substrate, the second side forms the side surface of the first substrate, and the third side forms the lower surface of the first substrate. The positioning wheel, the auxiliary guide wheel, and the lower guide wheel together form an assembly space that constrains the first substrate; The first side is in rolling contact with the positioning wheel, the second side is in rolling contact with the auxiliary guide wheel, and the third side is in rolling contact with the lower guide wheel.

8. The platform screen door structure with separate drive according to claim 1, characterized in that: Including cable chains; The cable chain is housed in a groove below the support base. The first end of the cable chain is fixedly connected to the door frame via a fourth connector, and the second end of the cable chain is fixedly connected to the side wall of the groove.

9. The platform screen door structure with separate drive units according to claim 8, characterized in that: The cable chain is hollow inside and has embedded cables, which are electrically connected to the drive assembly.

10. A staggered platform screen door system with separate drive units, characterized in that, It includes first and second door units arranged alternately along the length of the platform; The first gate unit and the second gate unit have the same structure and are staggered in the direction of the width of the support base perpendicular to the length of the platform. Each of the first door unit and the second door unit includes a platform door structure with separate drive as described in any one of claims 1 to 9.

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