Novel self-adaptive guide device of half-height platform door system

Abstract

The invention discloses a novel self-adaptive guide device of a half-height platform door system. The guide device comprises a first guide profile, a second guide profile, an upper guide wheel assembly, a lower guide wheel assembly and a door frame, the first guide profile and the second guide profile are distributed side by side, a gap is formed between the first guide profile and the second guide profile, the door frame is connected to the second guide profile in a sliding mode, and the upper guide wheel assembly and the lower guide wheel assembly are installed on the door frame. The upper guide wheel assembly abuts against the upper surface of the first guide sectional material, and the lower guide wheel assembly penetrates through the gap and abuts against the lower surface of the first guide sectional material to form vertical clamping force, so that the door frame can move in the length direction of the second guide sectional material. Accurate guiding of the door frame in the length direction of the second guiding profile is achieved, and the problem that a traditional linear guide rail possibly deviates or shakes is effectively solved; in addition, the stable guiding performance can be kept in various application scenes; in addition, the difficulty and the cost of equipment maintenance are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit platform doors, and in particular to an adaptive guiding device for a novel half-height platform door system. Background Art

[0002] In the existing rail transit field, the design and function of the half-height platform door system, as a key component of platform safety, are directly related to the safety of passengers, the running efficiency of trains, and the overall operating efficiency of the platform. The traditional fixed half-height platform door system has met the basic needs of rail transit for a long time in the past, thanks to its simple structure, stable action, and wide adaptability. The system drives the sliding door to slide left and right in the fixed side box through a motor and a synchronous belt to realize the door opening and closing action. Its travel is fixed and the action is single, ensuring the stability and reliability of the door body.

[0003] However, with the rapid development of my country's high-speed railways and intercity trains, mixed operation of multiple models has become the norm, which has posed new challenges to the platform door system. Due to the differences in door positions and door opening widths of different models, and the relatively low accuracy of the parking position of high-speed railway trains, the traditional fixed half-height platform door system has gradually exposed the problem of the inability to unify the door opening and closing positions and the size of the opening, making it difficult to meet the needs of diverse models.

[0004] In order to meet this challenge, a new type of half-height platform door system has emerged in recent years - double-door or telescopic half-height platform door. This system introduces a movable module consisting of a main frame that can move along the edge of the platform and two sliding doors that move in opposite directions, achieving the functional characteristics of full platform range movement, door opening at any position, and super large door opening. This design not only improves the safety level of platform protection, but also significantly improves the operating efficiency of passenger railways and meets the needs of different types of trains stopping at the platform.

[0005] However, in the design and implementation of the new semi-high platform door system, the traditional linear guide system has become a bottleneck restricting its development. Although the linear guide system is suitable for door movements with slightly higher precision and short guide distance, its limitations are obvious when faced with the large stroke opening requirements of the new semi-high platform door system, which requires full-range platform movement. On the one hand, linear guides need to be frequently greased to adapt to the climatic conditions in the north with large temperature differences throughout the year, making equipment maintenance difficult and costly; on the other hand, linear guides require high installation accuracy, high production costs, and relatively short guide distances, making it difficult to meet the needs of long-distance movement of the new semi-high platform door system. If an extended guide track is formed by docking the guide rails, not only will the docking technology and construction accuracy be extremely high, but it will also further increase the cost of the equipment.

[0006] Therefore, in order to promote the widespread application and development of the new half-height platform door system, it is urgent to design a new guide structure. This guide structure should have the characteristics of low maintenance difficulty, long guide distance, and wide adaptability to meet the new requirements of the new half-height platform door system for the guide system. Summary of the invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a novel adaptive guiding device for a half-height platform door system.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] An embodiment of the present invention provides an adaptive guide device of a novel semi-high platform door system, comprising: a first guide profile, a second guide profile, an upper guide wheel assembly, a lower guide wheel assembly and a door frame, the first guide profile and the second guide profile are distributed side by side, and a gap is provided therebetween, the door frame is slidably connected to the second guide profile, the upper guide wheel assembly and the lower guide wheel assembly are installed on the door frame, the upper guide wheel assembly abuts against the upper surface of the first guide profile, and the lower guide wheel assembly passes through the gap and abuts against the lower surface of the first guide profile to form upper and lower clamping forces, so that the door frame can move along the length direction of the second guide profile.

[0010] In a specific embodiment, the upper guide wheel assembly includes a bracket, an upper guide wheel shaft and an upper guide wheel, the bracket is installed on the door frame, the upper guide wheel is connected to the bracket through the upper guide wheel shaft, and the upper guide wheel rotates to abut against the upper surface of the first guide profile.

[0011] In a specific embodiment, a groove is provided on the outer periphery of the upper guide wheel, and a guide protrusion corresponding to the groove is provided on the upper surface of the first guide profile along the length direction.

[0012] In a specific embodiment, a limiting wheel shaft is further provided at the bottom of the bracket, the limiting wheel shaft is rotatably connected to the limiting wheel, and the limiting wheel shaft and the upper guide wheel shaft are distributed in a vertical state.

[0013] In a specific embodiment, the lower guide wheel assembly includes a guide wheel seat, a guide wheel plate, a lower guide wheel shaft, a lower guide wheel, a lever member, an elastic member, an adjusting head and an adjusting bolt. The guide wheel seat is installed on the door frame, the guide wheel plate is slidably connected to the guide wheel seat, the lower guide wheel is connected to the lower end of the guide wheel plate through the lower guide wheel shaft, the lower guide wheel rotates and abuts against the lower surface of the first guide profile, one end of the lever member 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 member in sequence and is connected to the guide wheel seat, the elastic member is sleeved on the adjusting head, and the upper end of the elastic member abuts against the adjusting head, and the lower end abuts against the lever member.

[0014] In a specific embodiment, the adjusting bolt is located above the guide wheel seat and is also sleeved with a locking nut.

[0015] In a specific embodiment, a semicircular protrusion is further provided at one end of the bottom of the lever member close to the guide wheel plate, and the semicircular protrusion abuts against the guide wheel seat.

[0016] In a specific embodiment, a cover plate is connected to one end of the guide wheel seat away from the adjusting bolt, a sliding cavity with upper and lower openings is formed between the guide wheel seat and the cover plate, and the guide wheel plate is slidably connected to the sliding cavity.

[0017] In a specific embodiment, a T-shaped limiting end is provided on the top of the guide wheel plate, and the length of the T-shaped limiting end is greater than the length of the sliding cavity.

[0018] In a specific embodiment, the upper surface of the first guide profile is flush with the upper surface of the second guide profile.

[0019] The adaptive guiding device of the novel semi-high platform door system of the present invention has the following beneficial effects compared with the prior art: the first guide profile and the second guide profile are arranged side by side and a gap is set, and the upper guide wheel assembly and the lower guide wheel assembly are respectively abutted against the upper and lower surfaces of the first guide profile to form an upper and lower clamping force. This design not only ensures the stability of the door frame during the sliding process, but also realizes the precise guidance of the door frame along the length direction of the second guide profile through the double-sided guiding effect, effectively avoiding the possible offset or shaking problems of the traditional linear guide rail; in addition, since the contact surfaces of the upper guide wheel assembly and the lower guide wheel assembly with the first guide profile are continuous and smooth, the guiding device can adapt to the movement requirements of the door frame under different lengths, different speeds and different load conditions. This adaptive ability enables the guiding device to maintain stable guiding performance in a variety of application scenarios; in addition, compared with the traditional linear guide rail, the guiding device does not need to frequently replace grease to maintain operational stability, thereby reducing the difficulty and cost of equipment maintenance; at the same time, since the structure of the guiding device is relatively simple, the installation and debugging process is also simpler, further reducing the production cost.

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A schematic diagram of the structure of the adaptive guide device of the novel half-height platform door system provided by the present invention;

[0023] Figure 2 An exploded schematic diagram of an adaptive guide device for a novel half-height platform door system provided by the present invention;

[0024] Figure 3 A schematic side view of an adaptive guide device for a novel half-height platform door system provided by the present invention;

[0025] Figure 4 A schematic side view of a first guide profile provided by the present invention;

[0026] Figure 5 A schematic cross-sectional view of the upper guide wheel assembly provided by the present invention;

[0027] Figure 6 A schematic cross-sectional view of the lower guide wheel assembly provided by the present invention;

[0028] Figure 7 A front schematic view of the lower guide wheel assembly provided by the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] 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.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0036] See also Figures 1 to 7 In the specific embodiment shown, the present invention discloses an adaptive guiding device of a novel semi-high platform door system, comprising: a first guide profile 10, a second guide profile 20, an upper guide wheel assembly 30, a lower guide wheel assembly 40 and a door frame 50, wherein the first guide profile 10 and the second guide profile 20 are arranged side by side, and a gap 60 is provided therebetween, the door frame 50 is slidably connected to the second guide profile 20, the upper guide wheel assembly 30 and the lower guide wheel assembly 40 are installed on the door frame 50, the upper guide wheel assembly 30 abuts against the upper surface of the first guide profile 10, and the lower guide wheel assembly 40 passes through the gap 60 and abuts against the lower surface of the first guide profile 10 to form an upper and lower clamping force, so that the door frame 50 can move along the length direction of the second guide profile 20.

[0037] Specifically, the first guide profile 10 and the second guide profile 20 are arranged side by side and a gap 60 is set, and the upper guide wheel assembly 30 and the lower guide wheel assembly 40 are respectively abutted against the upper and lower surfaces of the first guide profile 10 to form an upper and lower clamping force. This design not only ensures the stability of the door frame 50 during the sliding process, but also realizes the precise guidance of the door frame 50 along the length direction of the second guide profile 20 through the double-sided guiding effect, effectively avoiding the possible deviation or shaking problems of traditional linear guides; in addition, since the contact surfaces of the upper guide wheel assembly 30 and the lower guide wheel assembly 40 with the first guide profile 10 are continuous and smooth, the guide device can adapt to the movement of the door frame 50 under different lengths, different speeds and different load conditions. This adaptive ability enables the guide device to maintain stable guiding performance in a variety of application scenarios; in addition, compared with traditional linear guides, the guide device does not need to frequently replace grease to maintain operational stability, thereby reducing the difficulty and cost of equipment maintenance; at the same time, due to the relatively simple structure of the guide device, the installation and debugging process is also simpler, further reducing the production cost; in addition, the guide device achieves the flexibility of long-distance guidance through the side-by-side distribution of the first guide profile 10 and the second guide profile 20 and the gap 60 setting. When the guiding distance needs to be extended, it is only necessary to add the corresponding guide profile and perform simple docking, without the need for complex docking technology and construction accuracy requirements, thereby reducing the construction difficulty and cost. In addition, the guide device is not only suitable for new semi-high platform door systems, but can also be widely used in other occasions that require precise guidance and stable sliding, such as platform door systems in rail transportation fields such as subways and light rails, as well as sliding door systems in industrial automation, logistics warehousing and other fields.

[0038] More specifically, the first guide profile 10 and the second guide profile 20 are installed on a mounting frame based on civil engineering, and are respectively connected in sections along the entire length of the platform edge. At the same time, a guide gap 60 is left between the first guide profile 10 and the second guide profile 20. The upper guide wheel assembly 30 and the lower guide wheel assembly 40 are installed on the door frame 50 and slide along the length direction of the guide profile together with the door frame 50.

[0039] See also Figures 1 to 5 As shown, in one embodiment, the upper guide wheel assembly 30 includes a bracket 31, an upper guide wheel shaft 32 and an upper guide wheel 33, the bracket 31 is installed on the door frame 50, the upper guide wheel 33 is connected to the bracket 31 through the upper guide wheel shaft 32, and the upper guide wheel 33 rotates to abut against the upper surface of the first guide profile 10.

[0040] Specifically, the upper guide wheel 33 is pressed with a bearing, and forms a hole-shaft match with the upper guide wheel shaft 32 and can rotate freely. The upper guide wheel shaft 32 is fixed to the bracket 31 by threads or other means, and the bracket 31 is fixed to the door frame 50 by bolts. The upper guide wheel 33 is usually made of wear-resistant and durable materials, such as bearing steel or stainless steel, to withstand the friction and wear during the movement of the door frame 50. After the installation is completed, the position of the door frame 50 is adjusted so that the upper guide wheel 33 rotates and abuts against the upper surface of the first guide profile 10. At this time, the upper guide wheel 33 will roll along the upper surface of the first guide profile 10 during the movement of the door frame 50, playing a guiding and supporting role.

[0041] More specifically, the upper guide wheel 33 uses rolling friction instead of sliding friction, which significantly reduces the friction resistance during the movement of the door frame 50, which not only reduces energy consumption, but also improves the movement efficiency of the door frame 50. In addition, the design of the upper guide wheel assembly 30 enables it to adapt to first guide profiles 10 of different shapes and sizes. At the same time, since the upper guide wheel 33 can rotate freely, even if there are slight unevenness or deformation on the surface of the first guide profile 10, the upper guide wheel 33 can roll smoothly and maintain stable guiding performance. In addition, the structure of the upper guide wheel assembly 30 is relatively simple and easy to disassemble and replace. When the upper guide wheel 33 needs to be maintained or replaced, it can be easily completed by disassembling the relevant parts without disassembling or rebuilding the entire guide device.

[0042] See also Figures 1 to 5 As shown, in one embodiment, a groove 331 is provided on the outer periphery of the upper guide wheel 33 , and a guide protrusion 11 corresponding to the groove 331 is provided on the upper surface of the first guide profile 10 along the length direction.

[0043] Specifically, a groove 331 is designed and processed on the outer circumference of the upper guide wheel 33 according to specific shape and size requirements. The groove 331 can be V-shaped, U-shaped or other shapes, depending on the shape and size of the guide protrusion 11 on the first guide profile 10. The design of the groove 331 should ensure that the upper guide wheel 33 can fit tightly on the guide protrusion 11 during rolling to achieve a stable guiding effect.

[0044] More specifically, by providing a groove 331 on the outer periphery of the upper guide wheel 33 and providing a guide protrusion 11 corresponding to the groove 331 on the upper surface of the first guide profile 10, a close fit between the two is achieved. This design not only improves the accuracy and stability of the guide, but also effectively prevents the door frame 50 from deflecting and shaking during the movement. In addition, the close fit between the groove 331 and the guide protrusion 11 reduces the friction area between the two, thereby reducing the generation of wear and noise, which not only prolongs the service life of the upper guide wheel 33 and the first guide profile 10, but also improves the reliability and durability of the entire guide device. In addition, the design of the groove 331 and the guide protrusion 11 enables it to adapt to door frames 50 of different shapes and sizes and guide requirements. This design flexibility enables the guide device to be widely used in platform door systems in various rail transportation fields, as well as other occasions that require precise guidance and stable sliding. In addition, by optimizing the shape and size of the groove 331 and the guide protrusion 11, the movement performance of the door frame 50 can be further improved; for example, rolling resistance can be reduced, movement efficiency can be improved, and energy consumption can be reduced.

[0045] See also Figure 2 and Figure 5 As shown, in one embodiment, a limiting wheel shaft 34 is further provided at the bottom of the bracket 31 , and the limiting wheel shaft 34 is rotatably connected to a limiting wheel 35 , and the limiting wheel shaft 34 and the upper guide wheel shaft 32 are distributed in a vertical state.

[0046] Specifically, the limiting wheel 35 is pressed with a bearing, and forms a hole-shaft match with the limiting wheel shaft 34 and can rotate freely. The limiting wheel 35 contacts the side of the first guide profile 10 and the second guide profile 20, and rolls along the side of the first guide profile 10 and the second guide profile 20 to transfer the pressure of the vertical platform track generated by the pressure of the door frame 50 to the side of the first guide profile 10 and the second guide profile 20. That is, at the bottom of the bracket 31, according to the design requirements, the limiting wheel shaft 34 is installed. The limiting wheel shaft 34 is distributed in a vertical state with the upper guide wheel shaft 32 to ensure that the door frame 50 can be fully supported and guided during movement. The installation of the limiting wheel shaft 34 should ensure its stability and reliability so that it will not loosen or fall off during long-term use, and then the limiting wheel 35 is rotatably connected to the limiting wheel shaft 34 and ensures that it can roll freely. The limiting wheel 35 is usually made of wear-resistant and durable materials, such as bearing steel or stainless steel, to withstand friction and wear during the movement of the door frame 50. At the same time, the surface of the limiting wheel 35 should be properly treated to reduce noise and resistance during rolling. After installation, adjust the position of the door frame 50 so that the limiting wheel 35 contacts the side of the first guide profile 10 and the second guide profile 20. At this time, the limiting wheel 35 will roll along the side of the first guide profile 10 and the second guide profile 20 during the movement of the door frame 50, playing a supporting and guiding role. At the same time, the limiting wheel 35 can also transfer the pressure of the vertical platform track generated by the pressure of the door frame 50 to the side of the first guide profile 10 and the second guide profile 20, thereby ensuring the stability and safety of the door frame 50.

[0047] More specifically, by installing the limiting wheel 35, the door frame 50 can be supported and guided in all directions when it moves. The limiting wheel 35 rolls along the side of the guide profile, which can ensure the stability of the door frame 50 in the vertical direction and prevent it from shaking or deflecting due to uneven force. In addition, the limiting wheel 35 not only plays a supporting and guiding role, but also can transfer the pressure of the vertical platform track generated by the door frame 50 being compressed to the side of the guide profile. This design can ensure that the door frame 50 can remain stable when it is under pressure, thereby improving the safety of the entire platform door system.

[0048] See also Figures 1 to 4 , Figure 6 and Figure 7As shown, in one embodiment, the lower guide wheel assembly 40 includes a guide wheel seat 41, a guide wheel plate 42, a lower guide wheel shaft 43, a lower guide wheel 44, a lever member 45, an elastic member 46, an adjusting head 47 and an adjusting bolt 48. The guide wheel seat 41 is installed on the door frame 50, the guide wheel plate 42 is slidably connected to the guide wheel seat 41, the lower guide wheel 44 is connected to the lower end of the guide wheel plate 42 through the lower guide wheel shaft 43, the lower guide wheel 44 rotatably abuts against the lower surface of the first guide profile 10, one end of the lever member 45 is connected to the upper end of the guide wheel plate 42, the adjusting bolt 48 passes through the adjusting head 47 and the other end of the lever member 45 in sequence and is connected to the guide wheel seat 41, the elastic member 46 is sleeved on the adjusting head 47, and the upper end of the elastic member 46 abuts against the adjusting head 47, and the lower end abuts against the lever member 45.

[0049] Specifically, the lower guide wheel 44 is pressed with a bearing, and forms a hole-shaft fit with the lower guide wheel shaft 43 and can rotate freely. The lower guide wheel shaft 43 is fixed to the guide wheel seat 41 by threads or other means, and the guide wheel seat 41 is fixed to the door frame 50 by bolts. When the distance from the adjustment head 47 to the guide wheel seat 41 is adjusted by adjusting the bolt 48, the compression distance of the elastic member 46 changes, and the elastic force also changes, so that the guide wheel plate 42 moves up and down along the guide wheel seat 41. That is to say, first, the guide wheel seat 41 is fixedly installed at a predetermined position of the door frame 50 by bolts or other fastening methods. Then, the guide wheel plate 42 is slidably connected to the guide wheel seat 41 to ensure that the guide wheel plate 42 can slide up and down along the guide wheel seat 41, but will not fall off. The lower guide wheel 44 is connected to the lower end of the guide wheel plate 42 through the lower guide wheel shaft 43, and ensures that the lower guide wheel 44 can rotate freely. The lower guide wheel shaft 43 can be fixed on the guide wheel plate 42 by threads, pins or other fastening methods, and ensures that the lower guide wheel 44 maintains rotational contact with the lower surface of the first guide profile 10. One end of the lever member 45 is connected to the upper end of the guide wheel plate 42, and the other end is connected to the guide wheel seat 41 through an adjusting bolt 48. The adjusting bolt 48 passes through the adjusting head 47 and the other end of the lever member 45 in sequence, and is fixed with a nut or other methods. The elastic member 46 is sleeved on the adjusting head 47, and its upper end abuts on the adjusting head 47, and its lower end abuts on the lever member 45. In this way, when the adjusting bolt 48 is adjusted, the elastic member 46 will be compressed or stretched, thereby generating a changing elastic force. By rotating the adjusting bolt 48, the distance from the adjusting head 47 to the guide wheel seat 41 can be adjusted. The change in this distance will cause the compression distance of the elastic member 46 to change, thereby causing the elastic force to change. After the lower guide wheel assembly 40 is adjusted, the lower guide wheel 44 will rotate tightly against the lower surface of the first guide profile 10 to provide stable support and guidance for the door frame 50 .

[0050] More specifically, the dynamic adjustment of the lower guide wheel assembly 40 can be achieved by adjusting the combination of the bolt 48 and the elastic member 46. This adjustment method enables the door frame 50 to be fine-tuned as needed during installation and use to ensure a close fit and stable movement between it and the guide profile. In addition, the lower guide wheel 44 is pressed with a bearing and forms a hole-shaft fit with the lower guide wheel shaft 43, which can rotate freely. This design reduces friction and wear and increases the service life of the lower guide wheel 44; at the same time, the close contact between the lower guide wheel 44 and the first guide profile 10 also enhances the stability of the door frame 50. In addition, the design of the lower guide wheel assembly 40 has strong adaptability and can adapt to door frames 50 and guide profiles of different shapes and sizes, which enables the assembly to be widely used in platform door systems in various rail transit fields.

[0051] See also Figure 3 and Figure 6 As shown, in one embodiment, the adjusting bolt 48 is located above the guide wheel seat 41 and is also sleeved with a locking nut 49 .

[0052] Specifically, the adjusting bolt 48 is threadedly connected to the guide wheel seat 41, and a double-thread locking structure is formed through the locking nut 49; when the locking nut 49 is loosened, the adjusting bolt 48 can be rotated to adjust the distance from the adjusting head 47 to the guide wheel seat 41. In other words, through the double-thread locking structure, the adjusting bolt 48 is firmly fixed at the desired position. This structure not only enhances the firmness of the connection, but also improves the stability of the entire lower guide wheel assembly 40. After loosening the locking nut 49, the adjusting bolt 48 can be freely rotated to adjust the distance between the adjusting head 47 and the guide wheel seat 41. This adjustment method is simple and convenient, and does not require the use of special tools or equipment. In addition, the presence of the locking nut 49 can effectively prevent the adjusting bolt 48 from loosening due to vibration or external force during use, which ensures that the lower guide wheel assembly 40 can always maintain a stable operating state. In addition, since the adjusting bolt 48 and the locking nut 49 are both threadedly connected and have a double-thread locking structure, the connection between them is more firm and reliable, which enhances the durability of the entire lower guide wheel assembly 40 and extends its service life.

[0053] See also Figure 3 and Figure 6 As shown, in one embodiment, a semicircular protrusion 451 is further provided at one end of the bottom of the lever member 45 close to the guide wheel plate 42 , and the semicircular protrusion 451 abuts against the guide wheel seat 41 .

[0054] Specifically, the elastic member 46 is a spring, and the preload of the spring acts on the long end of the lever member 45. The short end of the lever member 45 contacts a square groove on the guide wheel plate 42 and converts the rotation of the lever member 45 with the semicircular protrusion 451 as the base point into the up and down sliding movement of the guide wheel plate 42 along the guide wheel seat 41. In other words, the lever member 45 is a metal or plastic component with a specific shape, and a semicircular protrusion 451 is designed at one end of the bottom close to the guide wheel plate 42. The function of this semicircular protrusion 451 is to form a contact point with the guide wheel seat 41, which serves as the base point for the rotation of the lever member 45. The long end and the short end of the lever member 45 respectively bear different functions. The long end is the point of action of the spring preload, and the short end contacts a square groove on the guide wheel plate 42. A square groove is designed on the guide wheel plate 42, and the shape and size of this groove match the short end of the lever member 45. When the lever member 45 is installed in place, its short end will be embedded in the square groove of the guide wheel plate 42 to form a stable connection. Through this connection, the rotation of the lever member 45 can be converted into the up and down sliding movement of the guide wheel plate 42 along the guide wheel seat 41. The elastic member 46 is a spring, which is installed between the adjustment head 47 and the long end of the lever member 45. The preload of the spring acts on the long end of the lever member 45, so that the lever member 45 maintains a certain tension state. When the adjustment bolt 48 is adjusted, the preload of the spring will change, thereby affecting the sliding position of the guide wheel plate 42 along the guide wheel seat 41 through the lever action.

[0055] More specifically, through the contact between the semicircular protrusion 451 of the lever member 45 and the guide wheel seat 41, and the pre-pressure of the spring acting on the long end of the lever member 45, the position of the guide wheel plate 42 can be precisely adjusted. This adjustment method is not only simple and convenient, but also has high precision. In addition, the short end of the lever member 45 contacts the square groove of the guide wheel plate 42 to form a stable connection structure, which can prevent the lever member 45 from deflecting or shaking during the rotation process, thereby enhancing the stability of the entire lower guide wheel assembly 40. In addition, the pre-pressure of the spring acts on the long end of the lever member 45, and the force is transmitted to the guide wheel plate 42 through the lever action. This force distribution method can optimize the force state of the entire lower guide wheel assembly 40 and reduce unnecessary stress and deformation. In addition, since the connection between the lever member 45 and the guide wheel plate 42 is stable and reliable, and the pre-pressure of the spring acts on the long end of the lever member 45 to achieve a precise adjustment function, the entire lower guide wheel assembly 40 has high durability, it can maintain a stable operating state for a long time, and reduce the frequency of maintenance and replacement.

[0056] See also Figures 1 to 3 , Figure 6 and Figure 7As shown, in one embodiment, a cover plate 411 is further connected to one end of the guide wheel seat 41 away from the adjusting bolt 48, and a sliding cavity with upper and lower openings is formed between the guide wheel seat 41 and the cover plate 411 (not shown in the figure), and the guide wheel plate 42 is slidably connected to the sliding cavity.

[0057] Specifically, the guide wheel seat 41 is an important component supporting the guide wheel plate 42, one end of which is connected to the adjusting bolt 48 for adjusting the position of the guide wheel plate 42, and the other end is firmly connected to the cover plate 411 by some means (such as bolt connection, welding, snap connection, etc.). The shape and size of the cover plate 411 match the other end of the guide wheel seat 41 to ensure that a closed or semi-closed sliding cavity with upper and lower openings can be formed after the two are connected. After the guide wheel seat 41 is connected to the cover plate 411, the space formed between the two is the sliding cavity, which has upper and lower openings to facilitate the insertion of the guide wheel plate 42 from above or below and sliding connection. The shape and size of the sliding cavity are designed according to the shape and size of the guide wheel plate 42 to ensure that the guide wheel plate 42 can slide smoothly in the sliding cavity.

[0058] More specifically, by slidingly connecting the guide wheel plate 42 to the sliding cavity formed between the guide wheel seat 41 and the cover plate 411, it can be ensured that the guide wheel plate 42 always maintains a stable operating state during the sliding process. This connection method not only reduces the shaking and deviation of the guide wheel plate 42, but also improves the stability of the entire lower guide wheel assembly 40. In addition, the upper and lower openings of the sliding cavity make it easy to insert and remove the guide wheel plate 42 from the top or bottom, thereby simplifying the adjustment and maintenance process. When it is necessary to adjust the position of the guide wheel plate 42 or perform maintenance, it is only necessary to remove the guide wheel plate 42 from the sliding cavity without disassembling other components.

[0059] See also Figure 3 , Figure 6 and Figure 7 As shown, in one embodiment, a T-shaped limit end 421 is provided on the top of the guide wheel plate 42, and the length of the T-shaped limit end 421 is greater than the length of the sliding cavity.

[0060] Specifically, since the length of the T-shaped limiting end 421 is greater than the length of the sliding cavity, when the guide wheel plate 42 slides up and down in the sliding cavity, the T-shaped limiting end 421 will play a limiting role. It can prevent the guide wheel plate 42 from completely sliding out of the sliding cavity, thereby ensuring the stability and safety of the guide wheel plate 42 during the sliding process. At the same time, the shape and size of the T-shaped limiting end 421 are also designed to match the opening of the sliding cavity to ensure that the guide wheel plate 42 can be smoothly inserted into and slid out of the sliding cavity without being blocked or stuck.

[0061] See also Figures 1 to 3As shown, in one embodiment, the upper surface of the first guide profile 10 is flush with the upper surface of the second guide profile 20 .

[0062] Specifically, when the upper surface of the first guide profile 10 and the upper surface of the second guide profile 20 are flush, it can be ensured that the guide system has a higher guide accuracy, which helps to reduce the friction and resistance of the moving parts during the guiding process and improve the operating efficiency and stability of the system. In addition, by ensuring that the upper surfaces of the two guide profiles are flush, the space utilization of the entire system can be optimized, which helps to reduce unnecessary space waste and make the system more compact and efficient. In addition, the flush upper surfaces of the guide profiles can simplify the installation and maintenance process. During the installation process, it can be easier to ensure the accurate alignment and fixation of the two profiles; during the maintenance process, it can be more convenient to check and replace damaged parts.

[0063] Specifically, the upper guide wheel assembly 30 and the lower guide wheel assembly 40 are both installed on the door frame 50, the upper guide wheel assembly 30 transfers the gravity of the door frame 50 to the guide protrusion 11, and the lower guide wheel assembly 40 transfers the preload of the spring to the lower surface of the first guide profile 10, and the two form an upper and lower clamping force to firmly clamp the door frame 50 on the second guide profile 20 in the vertical direction, and the limiting wheel 35 transfers the pressure of the vertical platform track generated by the pressure on the door frame 50 to the sides of the first guide profile 10 and the second guide profile 20. At the same time, the concave and convex matching upper guide wheel 33 and guide protrusion 11, the arc contact matching lower guide wheel 44 and the lower surface of the first guide profile 10 also provide a certain amount of vertical platform track support force, and jointly complete the support and guidance of the vertical platform track side of the door frame 50.

[0064] Specifically, when the door frame 50 is subjected to a driving force, the first guide profile 10 and the second guide profile 20 are used as the guide structure of the door frame 50 in the above-mentioned cooperation, so that the door frame 50 moves along the length direction of the second guide profile 20. Since the guide profiles are connected in sections, it can be foreseen based on the accuracy of the extruded profiles and the on-site construction accuracy of the door frame 50 that, as the door frame 50 moves, the height of the area corresponding to the upper guide wheel assembly 30 and the lower guide wheel assembly 40 on the guide profile will continue to change within an estimated range of approximately plus or minus 5 mm, and at the same time, the thickness of the area corresponding to the guide profile will also continue to change within an estimated range of approximately plus or minus 0.5 mm. When the height and thickness of the guide profile change, the lower guide wheel assembly 40 will use the action of the spring to make the guide wheel plate 42 slide up and down to adapt to the changes in the height and thickness of the guide profile, so as to ensure that the door frame 50 is stable and reliable and the resistance moves relatively stably in the length direction of the guide profile.

[0065] Specifically, a plurality of upper guide wheel assemblies 30 and lower guide wheel assemblies 40 may be provided according to the length of the door frame 50 , and the specific number is not specifically limited herein.

[0066] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A novel adaptive guiding device for a half-height platform door system, characterized in that: include: A first guide profile, a second guide profile, an upper guide wheel assembly, a lower guide wheel assembly and a door frame, the first guide profile and the second guide profile are arranged side by side with a gap therebetween, the door frame is slidably connected to the second guide profile, the upper guide wheel assembly and the lower guide wheel assembly are mounted on the door frame, the upper guide wheel assembly abuts against the upper surface of the first guide profile, and the lower guide wheel assembly passes through the gap and abuts against the lower surface of the first guide profile to form upper and lower clamping forces, so that the door frame can move along the length direction of the second guide profile.

2. The adaptive guiding device of the novel half-height platform door system according to claim 1 is characterized in that: The upper guide wheel assembly includes a bracket, an upper guide wheel shaft and an upper guide wheel. The bracket is installed on the door frame. The upper guide wheel is connected to the bracket through the upper guide wheel shaft. The upper guide wheel rotates and abuts against the upper surface of the first guide profile.

3. The adaptive guiding device of the novel half-height platform door system according to claim 2 is characterized in that: A groove is provided on the outer periphery of the upper guide wheel, and a guide protrusion corresponding to the groove is provided on the upper surface of the first guide profile along the length direction.

4. The adaptive guiding device of the novel half-height platform door system according to claim 2 is characterized in that: The bottom of the bracket is also provided with a limiting wheel shaft, the limiting wheel shaft is rotatably connected to the limiting wheel, and the limiting wheel shaft and the upper guide wheel shaft are distributed in a vertical state.

5. The adaptive guiding device of the novel half-height platform door system according to claim 1 is characterized in that: The lower guide wheel assembly includes a guide wheel seat, a guide wheel plate, a lower guide wheel shaft, a lower guide wheel, a lever member, an elastic member, an adjusting head and an adjusting bolt. The guide wheel seat is installed on the door frame, the guide wheel plate is slidably connected to the guide wheel seat, the lower guide wheel is connected to the lower end of the guide wheel plate through the lower guide wheel shaft, the lower guide wheel rotates and abuts against the lower surface of the first guide profile, one end of the lever member 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 member in sequence and is connected to the guide wheel seat, the elastic member is sleeved on the adjusting head, and the upper end of the elastic member abuts against the adjusting head, and the lower end abuts against the lever member.

6. The adaptive guiding device of the novel half-height platform door system according to claim 5 is characterized in that: The adjusting bolt is located above the guide wheel seat and is also sleeved with a locking nut.

7. The adaptive guiding device of the novel half-height platform door system according to claim 5 is characterized in that: A semicircular protrusion is also provided at one end of the bottom of the lever member close to the guide wheel plate, and the semicircular protrusion abuts against the guide wheel seat.

8. The adaptive guiding device of the novel half-height platform door system according to claim 5 is characterized in that: The guide wheel seat is also connected to a cover plate at one end away from the adjusting bolt, a sliding cavity with upper and lower openings is formed between the guide wheel seat and the cover plate, and the guide wheel plate is slidably connected to the sliding cavity.

9. The adaptive guiding device of the novel half-height platform door system according to claim 8 is characterized in that: A T-shaped limiting end is provided on the top of the guide wheel plate, and the length of the T-shaped limiting end is greater than the length of the sliding cavity.

10. The adaptive guiding device of the novel half-height platform door system according to claim 1 is characterized in that: An upper surface of the first guide profile is flush with an upper surface of the second guide profile.

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