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

Abstract

The utility model 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. According to the utility model, accurate guiding of the door frame along the length direction of the second guiding section bar is realized, and the problem of possible deviation or shaking of a traditional linear guide rail is effectively avoided; 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 utility model relates to rail transit platform door technical field especially relates to a new type half height platform door system's self -adaptation guiding device. BACKGROUND

[0002] In the existing rail transit field, as the key component of platform safety, the design and function of half height platform door system are directly related to the safety of passengers, the operation efficiency of train and the overall operation efficiency of platform. The traditional fixed half height platform door system meets the basic demand of rail transit in a long period of time because of 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 motor and synchronous belt, realizes the opening and closing action, and the fixed stroke and single action ensure the stability and reliability of the door body.

[0003] However, with the rapid development of high-speed railway and intercity train in China, the mixed operation of various train types becomes the norm, which poses new challenges to platform door system. Because of the difference of door position and opening width of different train types, and the relatively low accuracy of parking position of high-speed railway train, the traditional fixed half height platform door system gradually exposes the problem that the opening and closing position and the opening size cannot be unified, which is difficult to meet the demand of diversified train types.

[0004] In order to cope with this challenge, a new type of half height platform door system, double door type or nested type half height platform door, has appeared in recent years. The system realizes the functions of full platform action, opening at any position and super large opening degree through the introduction of a movable main frame along the edge of the platform and two sliding doors moving in opposite directions. This design not only improves the safety level of platform protection, but also significantly improves the operation efficiency of passenger railway, and meets the demand of different train types to stop at platform.

[0005] However, in the design and implementation process of new type half height platform door system, the traditional linear guide rail guiding system has become a bottleneck restricting its development. Although the linear guide rail guiding system is suitable for door action with slightly higher precision and short guiding distance, its limitations are obvious when facing the demand of long stroke opening degree of new type half height platform door system. On the one hand, the linear guide rail needs to be replaced frequently to adapt to the climate conditions of large temperature difference in north China all year round, which increases the difficulty and cost of equipment maintenance. On the other hand, the installation precision of linear guide rail is high, the production cost is high, and the guiding distance is relatively short, which is difficult to meet the demand of long distance movement of new type half height platform door system. If the lengthened guiding track is formed by the butt joint of guide rails, not only the butt joint technology and construction precision are required, but also the equipment cost is further increased.

[0006] Therefore, in order to promote the wide application and development of the new half-height platform door system, it is urgent to design a new guide structure. The guide structure should have the characteristics of low maintenance difficulty, long guide distance, wide adaptation range and the like, so as to meet the new requirements of the guide system for the new half-height platform door system. Utility model content

[0007] The utility model aims at overcoming the insufficient of prior art, provides a new half-height platform door system's self -adaptation guide device.

[0008] In order to solve the above technical problem, the utility model adopts the following technical scheme:

[0009] The utility model embodiment provides a new half-height platform door system's self -adaptation guide device, include: first guide section bar, second guide section bar, upper guide wheel subassembly, lower guide wheel subassembly and door frame, first guide section bar with second guide section bar is distributed side by side, and is equipped with gap between two, door frame is connected in sliding in second guide section bar, upper guide wheel subassembly with lower guide wheel subassembly are installed in door frame, upper guide wheel subassembly is butted in the upper surface of first guide section bar, and lower guide wheel subassembly passes through the gap and is butted in the lower surface of first guide section bar, to form the clamping force of up and down, so that door frame can move along the length direction of second guide section bar.

[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 mounted to the door frame. The upper guide wheel is connected to the bracket by the upper guide wheel shaft. The upper guide wheel is in rotational abutment with the upper surface of the first guide section.

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

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

[0013] In an embodiment, the lower guide wheel assembly comprises a guide wheel base, a guide wheel plate, a lower guide wheel shaft, a lower guide wheel, a lever, a spring, an adjusting head and an adjusting bolt, the guide wheel base is installed on the door frame, the guide wheel plate is slidingly connected to the guide wheel base, 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 is in rotational abutment with the lower surface of the first guide profile, 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 base, the spring is sleeved on the adjusting head, and the upper end of the spring is in abutment with the adjusting head and the lower end is in abutment with the lever.

[0014] In an embodiment, the adjusting bolt is sleeved with a locking nut above the guide wheel base.

[0015] In an embodiment, the bottom of the lever is provided with a semicircular protrusion near one end of the guide wheel plate, and the semicircular protrusion is in abutment with the guide wheel base.

[0016] In an embodiment, the guide wheel base is further connected with a cover plate at an end away from the adjusting bolt, a sliding cavity with an upper and lower opening is formed between the guide wheel base and the cover plate, and the guide wheel plate is slidingly connected to the sliding cavity.

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

[0018] In an embodiment, the upper surface of the first guide profile and the upper surface of the second guide profile are flush.

[0019] The beneficial effects of the adaptive guiding device of the novel half-height platform door system compared with the prior art are that: the first guiding profile and the second guiding profile are distributed side by side and gaps are arranged, meanwhile, the upper guiding wheel assembly and the lower guiding wheel assembly are respectively abutted on the upper and lower surfaces of the first guiding profile, so that the upper and lower clamping forces are formed, the design not only ensures the stability of the door frame in the sliding process, but also realizes the accurate guiding of the door frame along the length direction of the second guiding profile through the guiding effect of the two surfaces, and effectively avoids the offset or shaking problem that may exist in the traditional linear guide; in addition, since the contact surfaces of the upper guiding wheel assembly and the lower guiding wheel assembly and the first guiding profile are continuous and smooth, the guiding device can adapt to the door frame movement requirements under different lengths, different speeds and different load conditions, the adaptive capacity makes the guiding device maintain stable guiding performance in various application scenarios; in addition, compared with the traditional linear guide, the guiding device does not need to frequently replace grease to maintain the running stability, so that the difficulty and cost of equipment maintenance are reduced; meanwhile, since the structure of the guiding device is relatively simple, the installation and debugging process is also more simple, and the production cost is further reduced.

[0020] The utility model will be further described below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without paying the creative labor intensity.

[0022] Figure 1 The structural schematic diagram of the adaptive guiding device of the novel half-height platform door system provided by the utility model is shown in the figure.

[0023] Figure 2 The exploded schematic diagram of the adaptive guiding device of the novel half-height platform door system provided by the utility model is shown in the figure.

[0024] Figure 3 The side view schematic diagram of the adaptive guiding device of the novel half-height platform door system provided by the utility model is shown in the figure.

[0025] Figure 4 The side view schematic diagram of the first guiding profile provided by the utility model is shown in the figure.

[0026] Figure 5 The sectional view schematic diagram of the upper guiding wheel assembly provided by the utility model is shown in the figure.

[0027] Figure 6The utility model provides a cross section schematic view of lower guide wheel assembly is provided.

[0028] Figure 7 The utility model provides a front view schematic view of lower guide wheel assembly is provided. DETAILED DESCRIPTION

[0029] In order to make the utility model purposes, technical scheme and advantages more clearly, below combining with the specific implementation of the utility model and embodiment, the utility model is further detailed.

[0030] The technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making the creative labor belong to the scope of the utility model protection.

[0031] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0032] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0033] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be connected, or can be detachable, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be the communication of two elements or the interaction relationship of two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include the first and second features directly contact, or can include the first and second features are not directly contact but through the other features between them contact.

[0035] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0036] Referring to Figures 1 to 7 The utility model discloses a novel half height platform door system's self -adaptation guiding device, including: first guide section 10, second guide section 20, upper guide wheel subassembly 30, lower guide wheel subassembly 40 and door frame 50, first guide section 10 with second guide section 20 is distributed side by side, and is equipped with gap 60 between both, door frame 50 is connected in the sliding of second guide section 20, upper guide wheel subassembly 30 with lower guide wheel subassembly 40 are installed in door frame 50, upper guide wheel subassembly 30 abuts on the upper surface of first guide section 10, and lower guide wheel subassembly 40 passes through gap 60 and abuts on the lower surface of first guide section 10, to form the clamping force of up and down, so that door frame 50 can move along the length direction of second guide section 20.

[0037] Specifically, by arranging the first guide profile 10 and the second guide profile 20 side by side with a gap 60, and using the upper guide wheel assembly 30 and the lower guide wheel assembly 40 to abut the upper and lower surfaces of the first guide profile 10 respectively, an upper and lower clamping force is formed. This design not only ensures the stability of the door frame 50 during sliding, but also realizes precise guidance of the door frame 50 along the length direction of the second guide profile 20 through the guiding action of both sides, effectively avoiding the offset or shaking problems that may exist in 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 guiding device can adapt to the movement requirements of the door frame 50 under different lengths, speeds, and load conditions. This self-adaptive capability enables the guiding device to maintain stable guiding performance in various application scenarios. In addition, compared with traditional linear guides, the guiding device does not need to frequently change grease to maintain stable operation, 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 more simple, further reducing the production cost. In addition, the guiding device realizes the flexibility of long-distance guidance through the side-by-side arrangement of the first guide profile 10 and the second guide profile 20 and the gap 60. When the guiding distance needs to be extended, only the corresponding guide profiles need to be added and simply connected, without the need for complex connection technology and construction precision requirements, thereby reducing the construction difficulty and cost. In addition, the guiding device is not only suitable for new half-height platform door systems, but also can be widely applied to other occasions that require precise guidance and stable sliding, such as platform door systems in the fields of subway, light rail, and other rail transit, as well as sliding door systems in the fields of industrial automation and logistics storage.

[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 segmented and connected along the full length of the platform edge, while a guiding 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] Referring to Figures 1 to 5 In an embodiment, as shown in the drawings, 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 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 cooperation with the upper guide wheel shaft 32, which is fixed on the support 31 by screwing or other means, and the support 31 is fixed on 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 friction and wear during the movement of the door frame 50. After 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, significantly reducing the frictional 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 different shapes and sizes of the first guide profile 10. At the same time, since the upper guide wheel 33 can rotate freely, even if there is a slight unevenness or deformation on the surface of the first guide profile 10, the upper guide wheel 33 can still roll smoothly and maintain stable guiding performance. In addition, the structure of the upper guide wheel assembly 30 is relatively simple, 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] Referring to Figures 1 to 5 As shown, in an embodiment, the outer periphery of the upper guide wheel 33 is provided with a groove 331, and the upper surface of the first guide profile 10 is provided with a guide protrusion 11 corresponding to the groove 331 along the length direction.

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

[0044] More specifically, by setting a groove 331 on the outer periphery of the upper guide wheel 33 and a corresponding guide protrusion 11 on the upper surface of the first guide profile 10, a close fit between the two is achieved, which not only improves the accuracy and stability of the guide, but also effectively prevents the door frame 50 from shifting and shaking during movement. In addition, the close fit of the groove 331 and the guide protrusion 11 reduces the friction area between the two, thereby reducing 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 allows it to adapt to door frames 50 of different shapes and sizes and guide requirements, and this design flexibility makes the guide device widely applicable to various rail transit fields of platform door systems, 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: it can reduce the rolling resistance, improve the movement efficiency, and reduce energy consumption, etc.

[0045] Referring to Figure 2 and Figure 5 In an embodiment, the bottom of the bracket 31 is also provided with a limiting wheel shaft 34, which is rotationally connected with a limiting wheel 35, and the limiting wheel shaft 34 is vertically distributed with the upper guide wheel shaft 32.

[0046] Specifically, the limit wheel 35 is pressed with a bearing and forms a hole shaft cooperation with the limit wheel shaft 34 and can rotate freely. The limit wheel 35 contacts the side surface of the first guide profile 10 and the second guide profile 20 and rolls along the side surface of the first guide profile 10 and the second guide profile 20 to transmit the vertical platform rail pressure generated by the pressure of the door frame 50 to the side surface of the first guide profile 10 and the second guide profile 20. That is, at the bottom of the bracket 31, the limit wheel shaft 34 is installed according to design requirements. The limit 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 supported and guided in all directions when moving. The installation of the limit wheel shaft 34 should ensure its stability and reliability so as not to loosen or fall off during long-term use, and then the limit wheel 35 is rotatably connected to the limit wheel shaft 34 and can roll freely. The limit 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 limit wheel 35 should be properly treated to reduce noise and resistance when rolling. After installation is completed, the position of the door frame 50 is adjusted so that the limit wheel 35 contacts the side surface of the first guide profile 10 and the second guide profile 20. At this time, the limit wheel 35 will roll along the side surface 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 limit wheel 35 can also transmit the vertical platform rail pressure generated by the pressure of the door frame 50 to the side surface 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 limit wheel 35, the door frame 50 can be supported and guided in all directions when moving. The limit wheel 35 rolls along the side surface of the guide profile, which can ensure the stability of the door frame 50 in the vertical direction and prevent it from shaking or deviating due to uneven force. In addition, the limit wheel 35 not only plays a supporting and guiding role, but also can transmit the vertical platform rail pressure generated by the pressure of the door frame 50 to the side surface of the guide profile. This design can ensure that the door frame 50 can remain stable when subjected to pressure, thereby improving the safety of the entire platform door system.

[0048] Referring to Figures 1 to 4 , Figure 6 and Figure 7As shown, in an embodiment, the lower guide wheel assembly 40 comprises a guide wheel base 41, a guide wheel plate 42, a lower guide wheel shaft 43, a lower guide wheel 44, a lever 45, a spring 46, an adjusting head 47 and an adjusting bolt 48, the guide wheel base 41 is mounted on the door frame 50, the guide wheel plate 42 is slidingly connected to the guide wheel base 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 is in rotational abutment with the lower surface of the first guide profile 10, one end of the lever 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 45 in sequence and is connected to the guide wheel base 41, the spring 46 is sleeved on the adjusting head 47, and the upper end of the spring 46 is in abutment with the adjusting head 47, and the lower end is in abutment with the lever 45.

[0049] Specifically, the lower guide wheel 44 is pressed with a bearing and forms a hole shaft cooperation with the lower guide wheel shaft 43 and can rotate freely, the lower guide wheel shaft 43 is fixed on the guide wheel base 41 by threads or other ways, and the guide wheel base 41 is fixed on the door frame 50 by bolts. When the distance between the adjusting head 47 and the guide wheel base 41 is adjusted by the adjusting bolt 48, the compression distance of the spring 46 changes, and the elastic force also changes, so that the guide wheel plate 42 moves up and down along the guide wheel base 41. That is, first, the guide wheel base 41 is fixed and installed on the predetermined position of the door frame 50 by bolts or other fastening ways. Then, the guide wheel plate 42 is slidingly connected to the guide wheel base 41, ensuring that the guide wheel plate 42 can slide up and down along the guide wheel base 41, but 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 ways, while ensuring that the lower guide wheel 44 is in rotational abutment with the lower surface of the first guide profile 10. One end of the lever 45 is connected to the upper end of the guide wheel plate 42, and the other end is connected to the guide wheel base 41 through the adjusting bolt 48, the adjusting bolt 48 passes through the adjusting head 47 and the other end of the lever 45 in sequence, and is fixed by a nut or other ways. The spring 46 is sleeved on the adjusting head 47, the upper end is in abutment with the adjusting head 47, and the lower end is in abutment with the lever 45, so that when the adjusting bolt 48 is adjusted, the spring 46 will be compressed or stretched, thereby generating a changing elastic force. By rotating the adjusting bolt 48, the distance between the adjusting head 47 and the guide wheel base 41 can be adjusted, and the change of this distance will cause the compression distance of the spring 46 to change, thereby causing the elastic force to change. After the adjustment of the lower guide wheel assembly 40 is completed, the lower guide wheel 44 will be in close rotational abutment with the lower surface of the first guide profile 10, providing stable support and guidance for the door frame 50.

[0050] More specifically, by adjusting the combination of the adjusting bolt 48 and the elastic member 46, the dynamic adjustment of the lower guide wheel assembly 40 can be realized, which can fine-tune the door frame 50 according to the needs during installation and use, ensuring its close fit with the guide profile and stable movement. In addition, the lower guide wheel 44 is pressed with a bearing and forms a hole shaft cooperation with the lower guide wheel shaft 43, which can rotate freely, which reduces friction and wear, and improves 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, which can adapt to door frames 50 and guide profiles of different shapes and sizes, which makes the assembly can be widely used in various rail transit fields of platform door system.

[0051] Referring to Figure 3 and Figure 6 As shown in the drawings, in an 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 forms a double-thread locking structure with the locking nut 49; when the locking nut 49 is loosened, the adjusting bolt 48 can adjust the distance between the adjusting head 47 and the guide wheel seat 41 by rotating. That is, through the double-thread locking structure, the adjusting bolt 48 is firmly fixed in the required position, which 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, which is simple and convenient, and does not need to use 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 prolongs its service life.

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

[0054] Specifically, the elastic member 46 is a spring, and the pre-tightening force of the spring acts on the long end of the lever member 45. The short end of the lever member 45 is in contact with a square slot on the guide wheel plate 42 and converts the rotating action of the lever member 45 based on the semicircular protrusion 451 into the up-and-down sliding action of the guide wheel plate 42 along the guide wheel seat 41. That is, the lever member 45 is a metal or plastic component with a specific shape, and the bottom of the lever member 45 is designed with a semicircular protrusion 451 near one end of the guide wheel plate 42. The semicircular protrusion 451 serves as the contact point with the guide wheel seat 41 and as the base point for the rotation of the lever member 45. The long end and the short end of the lever member 45 have different functions. The long end is the action point of the pre-tightening force of the spring, and the short end is in contact with a square slot on the guide wheel plate 42. The guide wheel plate 42 is designed with a square slot that matches the shape and size of the short end of the lever member 45. When the lever member 45 is installed in place, the short end of the lever member 45 is embedded in the square slot of the guide wheel plate 42, forming a stable connection. Through this connection, the rotating action of the lever member 45 can be converted into the up-and-down sliding action of the guide wheel plate 42 along the guide wheel seat 41. The elastic member 46 is a spring installed between the adjusting head 47 and the long end of the lever member 45. The pre-tightening force of the spring acts on the long end of the lever member 45, keeping the lever member 45 in a state of tension. When the adjusting bolt 48 is adjusted, the pre-tightening force of the spring changes, 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 of the semicircular protrusion 451 of the lever member 45 with the guide wheel seat 41 and the pre-tightening force of the spring acting on the long end of the lever member 45, precise adjustment of the position of the guide wheel plate 42 can be achieved. This adjustment method is not only simple and convenient, but also has high precision. In addition, the short end of the lever member 45 is in contact with the square slot of the guide wheel plate 42, forming a stable connection structure that can prevent the lever member 45 from shifting or wobbling during rotation, thereby enhancing the stability of the entire lower guide wheel assembly 40. In addition, the pre-tightening force 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 stress state of the entire lower guide wheel assembly 40, reducing unnecessary stress and deformation. In addition, due to the stable and reliable connection between the lever member 45 and the guide wheel plate 42, and the precise adjustment function achieved by the pre-tightening force of the spring acting on the long end of the lever member 45, the entire lower guide wheel assembly 40 has high durability, which can maintain stable operation for a long time, reducing the frequency of maintenance and replacement.

[0056] Referring to Figures 1 to 3 , Figure 6 and Figure 7As shown, in an embodiment, the guide wheel base 41 is also connected with a cover plate 411 away from one end of the adjusting bolt 48, and a sliding cavity (not shown in the figure) with up and down openings is formed between the guide wheel base 41 and the cover plate 411. The guide wheel plate 42 is slidingly connected to the sliding cavity.

[0057] Specifically, the guide wheel base 41 is an important component that supports the guide wheel plate 42. One end of the guide wheel base 41 is connected with the adjusting bolt 48 for adjusting the position of the guide wheel plate 42, and the other end is firmly connected with the cover plate 411 in some way (such as bolt connection, welding, buckle connection, etc.). The shape and size of the cover plate 411 match the other end of the guide wheel base 41, ensuring that the two can form a closed or semi-closed sliding cavity with up and down openings after being connected. After the guide wheel base 41 is connected with the cover plate 411, the space formed between the two is the sliding cavity. The sliding cavity has up and down openings, which facilitates the insertion and sliding connection of the guide wheel plate 42 from above or below. 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 in the sliding cavity formed between the guide wheel base 41 and the cover plate 411, it can be ensured that the guide wheel plate 42 always maintains a stable operating state during sliding. 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 up and down opening design of the sliding cavity allows the guide wheel plate 42 to be easily inserted and removed from above or below, thereby simplifying the adjustment and maintenance process. When it is necessary to adjust the position of the guide wheel plate 42 or perform maintenance, the guide wheel plate 42 can be removed from the sliding cavity without the need to disassemble other components.

[0059] Referring to Figure 3 , Figure 6 and Figure 7 , in an embodiment, the top of the guide wheel plate 42 is provided with a T-shaped limiting end 421, and the length of the T-shaped limiting 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, the T-shaped limiting end 421 will play a limiting role when the guide wheel plate 42 slides up and down in the sliding cavity. It can prevent the guide wheel plate 42 from sliding out of the sliding cavity completely, thereby ensuring the stability and safety of the guide wheel plate 42 during sliding. 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, so as to ensure that the guide wheel plate 42 can be smoothly inserted and slid out of the sliding cavity without being hindered or stuck.

[0061] Referring to Figures 1 to 3As shown, in an embodiment, the upper surface of the first guide profile 10 and the upper surface of the second guide profile 20 are flush.

[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 ensure that the guide system has higher guiding accuracy, which helps to reduce the friction and resistance of the moving parts during guiding, and improve the operation 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 guide profile upper surface 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, by installing the upper guide wheel assembly 30 and the lower guide wheel assembly 40 on the door frame 50, the upper guide wheel assembly 30 transmits the gravity of the door frame 50 to the guide protrusion 11, and the lower guide wheel assembly 40 transmits the pre-pressing force of the spring to the lower surface of the first guide profile 10, both of which form an upper and lower clamping force to firmly clamp the door frame 50 in the vertical direction on the second guide profile 20, and the limit wheel 35 transmits the vertical platform track pressure generated by the compression of the door frame 50 to the side surfaces of the first guide profile 10 and the second guide profile 20, while the concave-convex cooperation of the upper guide wheel 33 and the guide protrusion 11, and the arc surface contact cooperation of the lower guide wheel 44 and the lower surface of the first guide profile 10 also provide certain vertical platform track branch support force, together completing 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 act as a guide structure for the door frame 50 as described above, allowing the door frame 50 to move along the length direction of the second guide profile 20. Since the guide profiles are connected in sections, according to the precision of the extruded profiles and the construction precision of the door frame 50 on site, it can be predicted that as the door frame 50 moves, the height of the area on the guide profile corresponding to the upper guide wheel assembly 30 and the lower guide wheel assembly 40 will continuously change within an estimated range of about ±5mm, and the thickness of the area on the guide profile corresponding to the upper guide wheel assembly 30 and the lower guide wheel assembly 40 will also continuously change within an estimated range of about ±0.5mm. When the height and thickness of the guide profile change, the lower guide wheel assembly 40 will slide the guide wheel plate 42 up and down through the action of the spring to adapt to the changes in the height and thickness of the guide profile, so as to ensure that the door frame 50 moves stably and reliably in the length direction of the guide profile with relatively stable resistance.

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

[0066] The above embodiment is a preferred implementation scheme of the present application, in addition to this, the present application can be implemented in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the present application.

Claims

1. A self-adapting guide for a new half-height platform door system, characterized in that, The application relates to a door frame structure, which 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 arranged side by side and are provided with a gap between them, 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, so that upper and lower clamping forces are formed, and the door frame can move along the length direction of the second guide profile. The upper guide wheel assembly comprises 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 and abuts against the upper surface of the first guide profile.

2. The self adaptive guiding device of the new half height platform door system according to claim 1, characterized in that, The outer periphery of the upper guide wheel is provided with a groove, and the upper surface of the first guide profile is provided with a guide protrusion corresponding to the groove along the length direction.

3. The self adaptive guiding device of the new half height platform screen door system according to claim 2, characterized in that, The bottom of the bracket is further provided with a limiting wheel shaft, the limiting wheel shaft is rotatably connected with a limiting wheel, and the limiting wheel shaft and the upper guide wheel shaft are arranged in a vertical state.

4. The self adaptive guiding device of the new half height platform screen door system according to claim 2, wherein, The lower guide wheel assembly comprises a guide wheel seat, a guide wheel plate, a lower guide wheel shaft, a lower guide wheel, a lever, 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 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 member is sleeved on the adjusting head, the upper end of the elastic member abuts against the adjusting head, and the lower end abuts against the lever.

5. The self adaptive guide device of the new half height platform screen door system according to claim 1, wherein, The adjusting bolt is further sleeved with a locking nut above the guide wheel seat.

6. The self-adapting guide of the new half-height platform door system according to claim 5, characterized in that, The bottom of the lever is further provided with a semicircular protrusion close to one end of the guide wheel plate, and the semicircular protrusion abuts against the guide wheel seat.

7. The self-adapting guide of the new half-height platform door system according to claim 5, characterized in that, One end of the guide wheel seat away from the adjusting bolt is further connected with a cover plate, a sliding cavity with an upper and lower opening is formed between the guide wheel seat and the cover plate, and the guide wheel plate is slidably connected to the sliding cavity.

8. The self-adapting guide of the new half-height platform door system according to claim 5, characterized in that, The top of the guide wheel plate is provided with a T-shaped limiting end, and the length of the T-shaped limiting end is greater than the length of the sliding cavity.

9. The self-adapting guide of the new half-height platform door system according to claim 8, characterized in that, The upper surface of the first guide profile is flush with the upper surface of the second guide profile.

10. The self-adapting guide of the new half-height platform door system according to claim 1, characterized in that, ​

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