Lifting door

Abstract

The utility model relates to the technical field of industrial doors, and discloses a lifting door which comprises a door body assembly, a stand column and a guide wheel assembly, a guide rail is arranged in the stand column, the guide rail comprises a base plate, side plates and limiting plates, the base plate, the two side plates and the two limiting plates define a guide groove, the guide wheel assembly comprises a connecting shaft and a limiting wheel arranged on the connecting shaft in a sleeved mode, and the limiting wheel is arranged on the connecting shaft. One end of the connecting shaft is connected with the door body assembly, the limiting wheel is arranged at the other end of the connecting shaft and comprises a wheel body, a connecting ring and a limiting ring which are sequentially connected, the wheel body is arranged in the guide groove and is in rolling fit with the side plate, and the limiting ring is arranged on the outer side of the guide groove and between the limiting ring and the wheel body; the distance between the limiting ring and the limiting plate is smaller than the distance between the wheel body and the base plate, when the door body assembly inclines, the limiting ring makes contact with the limiting plate preferentially, the wheel body is prevented from making contact with the base plate, friction between the wheel body and the guide rail is reduced, noise in the operation process of the lifting door is lowered, and the service life of the guide wheel assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial doors, in particular to a lifting door. Background Art

[0002] The lifting door is an industrial door used in industrial plants. It is widely used as a factory door because of its high sealing and safety performance.

[0003] The lifting door includes a door body assembly, a wheel assembly, and a column. The door body assembly includes multiple door panels. During assembly, two adjacent door panels are hinged by hinges, the wheel axle of the wheel assembly is inserted into the hinge hole of the hinge, and the outer wheel of the wheel assembly is installed in the guide rail in the column to complete the assembly. During the door opening and closing process, the outer wheel of the wheel assembly slides in the guide rail, causing the door body assembly to move up and down in the guide rail, forming the door opening and closing action.

[0004] However, during the process of opening and closing the door, the door body assembly is prone to tilt, and the end face of the wheel assembly is prone to friction with the inner wall of the guide rail. On the one hand, it is easy to cause abnormal noise during the operation of the lifting door, and on the other hand, it is easy to cause wear of the outer wheel, affecting the service life of the wheel assembly. Utility Model Content

[0005] The embodiment of the utility model aims to provide a lifting door to solve the technical problem in the prior art that the end surface of the wheel assembly is prone to friction with the inner side wall of the guide rail.

[0006] The embodiment of the utility model solves the technical problem by adopting the following technical solution: providing a lifting door, including a door body assembly;

[0007] A column, wherein a guide rail is arranged in the column, and the guide rail comprises a base plate, two side plates and two limit plates, wherein the two side plates are connected to both sides of the base plate, and the two limit plates are respectively connected to the sides of the two side plates away from the base plate, and the limit plates are arranged opposite to the base plate, and the base plate, the two side plates and the two limit plates enclose to form a guide groove;

[0008] A guide wheel assembly, wherein the guide wheel assembly comprises a connecting shaft and a limiting wheel, one end of the connecting shaft is connected to the door body assembly, the limiting wheel is sleeved on the other end of the connecting shaft, the limiting wheel comprises a wheel body, a connecting ring and a limiting ring connected in sequence, the wheel body is arranged in the guide groove and rollingly cooperates with the side plate, the connecting ring is arranged between the two limiting plates and has a clearance fit with the limiting plates, the limiting ring is arranged on the outer side of the guide groove, and the limiting plate is located between the limiting ring and the wheel body;

[0009] The distance between the limiting ring and the limiting plate is smaller than the distance between the wheel body and the base plate.

[0010] In some embodiments, a wheel assembly is further included, the wheel assembly includes a wheel axle and a rubber wheel, one end of the wheel axle is connected to the door body assembly, the rubber wheel is sleeved on the other end of the wheel axle, and the rubber wheel is arranged in the guide groove and rollingly cooperates with the side plate;

[0011] Wherein, the distance between the wheel body and the limiting plate is smaller than the distance between the rubber wheel and the base plate.

[0012] In some embodiments, the distance between the wheel body and the limiting plate is equal to the distance between the limiting ring and the limiting plate.

[0013] In some embodiments, the distance between the wheel body and the limiting plate is smaller than the distance between the rubber wheel and the limiting plate.

[0014] In some embodiments, the guide wheel assembly further includes a first bearing, the first bearing is disposed between the connecting shaft and the limiting wheel, and the first bearing is integrally formed with the limiting wheel.

[0015] In some embodiments, the guide wheel assembly further includes a support pad, an inner wall of the limiting wheel is provided with an annular groove, and the support pad is disposed in the annular groove.

[0016] In some embodiments, the guide wheel assemblies are respectively disposed at both ends of the upper portion of the door body assembly.

[0017] In some embodiments, the rubber wheel includes a wheel frame and a rubber sleeve;

[0018] The wheel bone is provided with a limiting hole, and the limiting hole passes through the two end surfaces of the wheel bone;

[0019] The rubber sleeve is arranged on the outer periphery of the wheel frame, and the rubber sleeve includes a rubber ring, a first rubber edge, a second rubber edge and a connecting portion. The rubber ring is bonded to the outer side surface of the wheel frame, the first rubber edge and the second rubber edge are respectively connected to the two ends of the rubber ring, and the first rubber edge and the second rubber edge are respectively bonded to the two end surfaces of the wheel frame, the connecting portion is penetrated into the limiting hole, and the two ends of the connecting portion are respectively connected to the first rubber edge and the second rubber edge.

[0020] In some embodiments, the end surfaces of both ends of the wheel bone are respectively provided with limiting grooves;

[0021] The rubber sleeve further includes a first rib and a second rib, wherein the first rib and the second rib are respectively connected to the first rubber edge and the second rubber edge, and the first rib and the second rib are respectively arranged in the corresponding limiting grooves.

[0022] In some embodiments, the door assembly includes a plurality of hinge units, a plurality of door panels, and a plurality of back panels;

[0023] Each of the hinge units is respectively arranged at the two ends of each of the door panels, and two adjacent hinge units are hinged through the connecting shaft. The hinge unit includes a hinge body and a support plate fixedly connected to the inner side of the hinge body. Each of the back plates is plugged into and matched with each of the hinge bodies, and each of the back plates and the support plates are respectively located on both sides of each of the door panels. Each of the back plates and the support plates are respectively limited and matched with each of the door panels to clamp each of the door panels between the corresponding support plate and the corresponding back plate.

[0024] Compared with the prior art, in the lifting door provided by the embodiment of the utility model, since the distance between the limit ring and the limit plate is smaller than the distance between the wheel body and the base plate, when the door body assembly tilts, the door body assembly drives the limit wheel to tilt, and the limit ring contacts the limit plate and hinders the further tilting of the door body assembly, thereby avoiding the contact between the wheel body of the limit wheel and the base plate, reducing the friction between the wheel body and the guide rail, improving the service life of the guide wheel assembly, and reducing the noise during the operation of the lifting door. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0026] Figure 1 It is a schematic diagram of the overall structure of a lifting door provided by an embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the lifting door without the pillars in the embodiment of the utility model;

[0028] Figure 3 It is a schematic diagram of the matching relationship between the guide wheel assembly and the guide rail in the embodiment of the utility model;

[0029] Figure 4 It is a schematic diagram of the matching relationship between the wheel assembly and the guide rail in the embodiment of the utility model;

[0030] Figure 5 It is a schematic cross-sectional structure diagram of the guide wheel assembly in the embodiment of the utility model;

[0031] Figure 6 It is a cross-sectional structural schematic diagram of a wheel assembly in an embodiment of the utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the rubber wheel in the embodiment of the utility model;

[0033] Figure 8 It is a schematic diagram of the cross-sectional structure of the rubber sleeve in the embodiment of the utility model;

[0034] Fig. 9 It is a schematic diagram of the cross-sectional structure of the rubber wheel in the embodiment of the utility model;

[0035] Fig.10 It is a three-dimensional structural schematic diagram of the wheel bone in the embodiment of the utility model;

[0036] Fig.11 It is a schematic cross-sectional structure diagram of the rubber wheel in another perspective of the embodiment of the utility model;

[0037] Fig.12 It is a schematic structural diagram of two adjacent hinge units and a wheel assembly after being assembled in an embodiment of the utility model; Fig.13 It is a schematic cross-sectional structure diagram of the hinge unit, door panel and back panel after being assembled in the embodiment of the utility model; Fig.14 It is a schematic diagram of the exploded structure of the hinge unit, the door panel and the back panel in the embodiment of the utility model;

[0038] Fig.15 This is a schematic diagram of the assembly structure of the window door panel structure in the embodiment of the utility model;

[0039] Fig.16 This is a schematic diagram of the exploded structure of the window door panel structure in the embodiment of the utility model;

[0040] Fig.17 yes Fig.16 A partial enlarged view of the middle A;

[0041] Fig.18 It is a schematic diagram of the three-dimensional structure of the first frame in the embodiment of the utility model;

[0042] Fig.19 yes Fig.15 Schematic diagram of the cross-sectional structure of the central window door panel structure along the BB direction;

[0043] Fig. 20 This is a schematic diagram of the assembly structure of the window door panel structure in the embodiment of the utility model;

[0044] Fig.21 This is a schematic diagram of the exploded structure of the window door panel structure in the embodiment of the utility model;

[0045] Fig. 22 It is a three-dimensional structural schematic diagram of the vertical frame in the embodiment of the utility model.

[0046] The reference numerals are as shown in the following table:

[0047]

[0048] DETAILED DESCRIPTION

[0049] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connecting" another element, it can be directly on another element, or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0050] See also Figures 1 to 4 , wherein L1 is the vertical distance between the wheel body 320 and the limiting plate 213, L2 is the vertical distance between the limiting ring 322 and the limiting plate 213, L3 is the vertical distance between the wheel body 320 and the base plate 211, L4 is the vertical distance between the rubber wheel 41 and the base plate 211, and L5 is the vertical distance between the rubber wheel 41 and the limiting plate 213.

[0051] The embodiment of the utility model provides a lifting door 100 , which includes a door body assembly 10 , a column 20 and a guide wheel assembly 30 .

[0052] A guide rail 21 is provided in the column 20, and the guide rail 21 includes a base plate 211, two side plates 212 and two limit plates 213. The two side plates 212 are connected to both sides of the base plate 211, and the two limit plates 213 are respectively connected to the side of the two side plates 212 away from the base plate 211, and the limit plates 213 are arranged opposite to the base plate 211. The two limit plates 213 extend inwardly relative to the two side plates 212. The base plate 211, the two side plates 212 and the two limit plates 213 enclose a guide groove 210. The guide wheel assembly 30 includes a connecting shaft 31 and a limit wheel 32. One end of the connecting shaft 31 is connected to the guide wheel 32. The door body assembly 10 is connected, and the limiting wheel 32 is sleeved on the other end of the connecting shaft 31. The limiting wheel 32 includes a wheel body 320, a connecting ring 321 and a limiting ring 322 connected in sequence. The wheel body 320 is arranged in the guide groove 210 and rollingly cooperates with the side plate 212. The connecting ring 321 is arranged between the two limiting plates 213 and has a clearance fit with the limiting plates 213. The limiting ring 322 is arranged on the outer side of the guide groove 210. The limiting plate 213 is located between the limiting ring 322 and the wheel body 320. The distance L2 between the limiting ring 322 and the limiting plate 213 is smaller than the distance L3 between the wheel body 320 and the base plate 211.

[0053] When the door body assembly 10 tilts, the door body assembly 10 drives the guide wheel assembly 30 to tilt. Since the distance L2 between the limit ring 322 and the limit plate 213 is smaller than the distance L3 between the wheel body 320 and the base plate 211, the limit ring 322 of the guide wheel assembly 30 contacts the limit plate 213 first. The limiting cooperation between the limit plate 213 and the limit ring 322 hinders the further tilting of the guide wheel assembly 30, avoids the contact between the wheel body 320 of the guide wheel assembly 30 and the base plate 211, reduces the friction between the wheel body 42 and the guide rail 21, improves the service life of the guide wheel assembly 30, and reduces the noise during the operation of the lifting door 100.

[0054] Optionally, the wheel body 320, the connecting ring 321 and the limiting ring 322 are integrally formed to ensure the structural strength of the limiting wheel 32. The wheel body 320 is a flat cylindrical structure and is disposed in the guide groove 210. The lifting door 100 is lifted and lowered by sliding the wheel body 320 in the guide groove 210. The connecting ring 321 is located between the two limiting plates 213 and has a certain gap with the two limiting plates 213 respectively, so as to avoid wear and abnormal noise caused by contact between the connecting ring 321 and the limiting plates 213. The limiting ring 322 is located outside the guide groove 210, that is, the limiting ring 322 is located on the side of the limiting plate 213 away from the wheel body 320. The limiting plate 213 is located between the limiting ring 322 and the wheel body 320, and the limiting plate 213 has a gap with the limiting ring 322 and the wheel body 320 respectively.

[0055] In some embodiments, the lifting door 100 also includes a wheel assembly 40, the wheel assembly 40 includes an axle 41 and a rubber wheel 42, one end of the axle 41 is connected to the door body assembly 10, the rubber wheel 42 is sleeved on the other end of the axle 41, and the rubber wheel 42 is arranged in the guide groove 210 and rollingly cooperates with the side plate 212, and the distance L1 between the wheel body 320 and the limit plate 213 is smaller than the distance L4 between the rubber wheel 42 and the base plate 211.

[0056] In this embodiment, the wheel body 320 of the guide wheel assembly 30 and the rubber wheel 42 of the wheel assembly 40 are both installed in the guide groove 210 of the guide rail 21. The wheel body 320 and the rubber wheel 42 slide in the guide groove 210 to make the door body assembly 10 move up and down, forming a door opening and closing action.

[0057] When the door body assembly 10 tilts, the door body assembly 10 drives the guide wheel assembly 30 and the wheel assembly 40 to tilt. Since the distance L1 between the wheel body 320 and the limiting plate 213 is smaller than the distance L4 between the rubber wheel 42 and the base plate 211, the limiting wheel 32 of the guide wheel assembly 30 contacts the limiting plate 213 first. The limiting cooperation between the limiting plate 213 and the limiting wheel 32 hinders the further tilting of the limiting wheel 32, avoids the contact between the rubber wheel 42 of the wheel assembly 40 and the base plate 211, reduces the friction between the rubber wheel 42 and the guide rail 21, improves the service life of the wheel assembly 40, and reduces the noise during the operation of the lifting door 100.

[0058] Optionally, the limiting wheel 32 of the guide wheel assembly 30 is made of a material with good wear resistance to increase its service life, and the rubber wheel 42 of the wheel assembly 40 is made of a relatively quiet soft rubber material to further reduce the noise during the operation of the lifting door 100.

[0059] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the distance L1 between the wheel body 320 and the limiting plate 213 is equal to the distance L2 between the limiting ring 322 and the limiting plate 213 .

[0060] In this embodiment, the wheel body 320 and the limit ring 322 are respectively located on both sides of the limit plate 213. The distance L1 between the wheel body 320 and the limit plate 213 is equal to the distance L2 between the limit ring 322 and the limit plate 213. The distance L1 between the wheel body 320 and the limit plate 213 is less than the distance L3 between the wheel body 320 and the substrate 211, and less than the distance L4 between the rubber wheel 42 and the substrate 211, that is: L1 = L2, L1 < L3 and L1 < L4. When the door body assembly 10 tilts, the door body assembly 10 drives the limit wheel 32 and the rubber wheel 42 to tilt. At this time, the wheel body 320 and the limit ring 322 respectively contact the two side surfaces of the limit plate 213, avoiding the contact between the limit wheel 32 and the rubber wheel 42 and the substrate 211, and reducing the friction between the limit wheel 32 and the rubber wheel 42 and the guide rail 21.

[0061] In some embodiments, the distance L1 between the wheel body 320 and the limit plate 213 is less than the distance L5 between the rubber wheel 42 and the limit plate 213.

[0062] As Figure 3 and Figure 4 shown, the distance L1 between the wheel body 320 and the limit plate 213 is not only less than the distance L4 between the rubber wheel 42 and the substrate 211, but also less than the distance L5 between the rubber wheel 42 and the limit plate 213. In this way, when the door body assembly 10 tilts, the limit wheel 32 contacts the limit plate 213, not only avoiding the contact between the rubber wheel 42 and the substrate 211, but also avoiding the contact between the rubber wheel 42 and the limit plate 213. Both side end faces of the rubber wheel 42 will not contact the guide rail 21, further reducing the friction between the rubber wheel 42 and the guide rail 21, reducing the noise during the operation of the lifting door 100, and reducing the wear of the rubber wheel 42, improving the service life of the wheel assembly 40.

[0063] In specific applications, the lifting door 100 can use a smaller number of guide wheel assemblies 30 and a larger number of wheel assemblies 40. The limit wheel 32 of the guide wheel assembly 30 is in limit cooperation with the limit plate 213 to limit the contact between the rubber wheel 42 of the wheel assembly 40 and the guide rail 21. Since both side end faces of the rubber wheel 42 will not contact the guide rail 21, the noise during the operation of the lifting door 100 can be greatly reduced.

[0064] Please refer to Figure 5 , in some embodiments, the guide wheel assembly 30 further includes a first bearing 33. The first bearing 33 is arranged between the connecting shaft 31 and the limit wheel 32, and the first bearing 33 is integrally formed with the limit wheel 32.

[0065] As Figure 5As shown, the first bearing 33 is sleeved on the connecting shaft 31, and the limiting wheel 32 is sleeved on the outer periphery of the first bearing 33. The provision of the first bearing 33 helps to improve the overall structural strength of the guide wheel assembly 30 and reduce the friction between the connecting shaft 31 and the limiting wheel 32.

[0066] The first bearing 33 and the limiting wheel 32 are integrally injection molded. The limiting wheel 32 can be made of a plastic material with good wear resistance. During the injection molding process, the limiting wheel 32 is hot-melted and wrapped around the outer periphery of the first bearing 33 to ensure the reliability of the connection between the limiting wheel 32 and the first bearing 33, and to avoid the limiting wheel 32 from loosening or degumming during use.

[0067] Optionally, there are multiple first bearings 33 to increase the structural strength of the guide wheel assembly 30 . In addition, the first bearing 33 and the limiting wheel 32 can also be designed to be separated.

[0068] In some embodiments, the guide wheel assembly 30 further includes a support pad 34 , the limiting wheel 32 has an annular groove, the support pad 34 is disposed in the annular groove, and the support pad 34 , the limiting wheel 131 and the first bearing 33 are integrally formed.

[0069] like Figure 5 As shown, an annular groove is provided on the inner surface of the limiting wheel 32, and a support pad 34 is arranged in the annular groove. The support pad 34, the first bearing 33 and the limiting wheel 32 are integrally formed. During the processing and molding process, the support pad 34 supports the limiting wheel 32 to prevent the limiting wheel 32 from shrinking and deforming during the injection molding process, thereby ensuring the accuracy of the injection molding size.

[0070] In some embodiments, guide wheel assemblies 30 are respectively provided at both ends of the upper part of the door body assembly 10. Specifically, the lifting door 100 includes a plurality of guide wheel assemblies 30 and a plurality of wheel assemblies 40. When the door body assembly 10 is tilted, the limiting wheels 32 of the guide wheel assemblies 30 located at both ends of the upper part of the door body assembly 10 preferentially contact the limiting plates 213 and prevent the door body assembly 10 from further tilting, which can effectively prevent the guide wheel assemblies 30 and wheel assemblies 40 below from contacting the base plate 211 and the limiting plates 213, thereby reducing the noise during the operation of the lifting door 100.

[0071] See also Figures 6 to 9In some embodiments, the rubber wheel 42 includes a wheel frame 420 and a rubber sleeve 421. A limiting hole 4200 is provided on the wheel frame 420. The limiting hole 4200 passes through the end faces 4206 of the wheel frame 420. The rubber sleeve 421 is arranged on the outer periphery of the wheel frame 420. The rubber sleeve 421 includes a rubber ring 4210, a first rubber edge 4211, a second rubber edge 4212 and a connecting portion 4213. The rubber ring 4210 is bonded to the outer side surface of the wheel frame 420. The first rubber edge 4211 and the second rubber edge 4212 are respectively connected to the two ends of the rubber ring 4210, and the first rubber edge 4211 and the second rubber edge 4212 are respectively bonded to the end faces 4206 of the wheel frame 420. The connecting portion 4213 is passed through the limiting hole 4200, and the two ends of the connecting portion 4213 are respectively connected to the first rubber edge 4211 and the second rubber edge 4212.

[0072] The rubber wheel 42 includes a wheel frame 420 and a rubber sleeve 421, and the rubber sleeve 421 is wrapped around the outer periphery of the wheel frame 420. Optionally, the rubber sleeve 421 is thermoplastically molded on the wheel frame 420 so that the rubber sleeve 421 and the wheel frame 420 are integrally molded. After integral injection molding, the rubber ring 4210 is bonded to the outer side surface of the wheel frame 420, and the first rubber edge 4211 and the second rubber edge 4212 are annular structures. The first rubber edge 4211 and the second rubber edge 4212 are respectively bonded to the end faces 4206 of the wheel frame 420, and the connecting part 4213 passes through the limiting hole 4200 and is bonded to the hole wall of the limiting hole 4200.

[0073] In this embodiment, limiting holes 4200 and connecting parts 4213 that cooperate with each other are set on the wheel frame 420 and the rubber sleeve 421, and the two ends of the connecting part 4213 are respectively connected to the first rubber edge 4211 and the second rubber edge 4212, so that the rubber sleeve 421 is locked on the wheel frame 420, thereby improving the bonding strength of the rubber sleeve 421 on the wheel frame 420, reducing the risk of debonding of the first rubber edge 4211 and the second rubber edge 4212, avoiding the loosening or rubber leakage of the rubber wheel 42, and improving the service life of the rubber wheel 42.

[0074] Optionally, a plurality of limiting holes 4200 are provided, and the plurality of limiting holes 4200 are spaced apart along the circumferential direction of the wheel frame 420. Correspondingly, a plurality of connecting parts 4213 are also provided, and the plurality of connecting parts 4213 correspond one to one with the plurality of limiting holes 4200. Through the limiting cooperation between the plurality of limiting holes 4200 and the plurality of connecting parts 4213, the rubber sleeve 421 is more firmly locked on the wheel frame 420, thereby ensuring that the rubber sleeve 421 does not loosen or leak.

[0075] Optionally, the wheel frame 420 is usually made of a high-strength metal material to improve the structural strength of the rubber wheel 42. For example, the wheel frame 420 can be made of steel, aluminum alloy, etc. The rubber sleeve 421 is usually made of a plastic material with good wear resistance to increase its service life. For example, the rubber sleeve 421 can be made of polyurethane (PU) material.

[0076] In some embodiments, along the radial direction of the rubber wheel 42, the cross section of the limiting hole 4200 includes a narrowing section, and the width of the narrowing section gradually decreases from the center of the wheel frame 420 to the edge direction X thereof.

[0077] Specifically, the cross section of the limiting hole 4200 refers to the cross section of the limiting hole 4200 along the axial direction perpendicular to the wheel frame 420. From the center of the wheel frame 420 to its edge direction X, the width of the narrowing section gradually decreases, limiting the movement of the connecting portion 4213 along the X direction, improving the radial force stability of the rubber wheel 42, and making the rubber lagging more firm and reliable.

[0078] Alternatively, if Fig. 9 As shown, the limiting hole 4200 includes a first side wall 4203 and a second side wall 4204 that are arranged opposite to each other, and the narrowing section is located between the first side wall 4203 and the second side wall 4204 .

[0079] In some embodiments, the cross-section of the limiting hole 4200 also includes a first connecting section.

[0080] Optionally, the first connecting section can be connected to one end of the narrowing section close to the edge of the wheel bone 420, and the width of the first connecting section can gradually increase in the direction X from the center of the wheel bone 420 to its edge, so that the cross-section of the limiting hole 4200 first changes from wide to narrow, and then from narrow to wide.

[0081] Optionally, the first connecting section can also be connected to one end of the narrowing section close to the center of the wheel bone 420, and the width of the first connecting section gradually increases from the center of the wheel bone 420 to its edge direction X, so that the cross-section of the limiting hole 4200 first changes from narrow to wide, and then from wide to narrow.

[0082] In some embodiments, the cross-section of the limiting hole 4200 also includes a second connecting section. The first connecting section and the second connecting section can be respectively connected to the two ends of the narrowing section, and the width of the first connecting section and the second connecting section gradually increases from the center of the wheel bone 420 to its edge direction X, so that the cross-section of the limiting hole 4200 first changes from narrow to wide, then from wide to narrow, and then from narrow to wide.

[0083] In addition, the shapes of the narrowing section, the first connecting section and the second connecting section can be a straight line, an arc shape, or other regular or irregular shapes. In other words, the cross-section of the limiting hole 4200 can be a regular or irregular shape, for example, the cross-section of the limiting hole 4200 is a straight line shape or an arc shape, etc.

[0084] See also Figures 9 to 11In some embodiments, the narrowing section includes a first hole wall 4201 and a second hole wall 4202 that are relatively arranged, and the first hole wall 4201 and the second hole wall 4202 gradually incline toward the inner side of the limiting hole 4200 from the center of the wheel bone 420 to its edge direction X.

[0085] The cross-section of the narrowing section is roughly trapezoidal in structure, and the narrowing section has a first hole wall 4201 and a second hole wall 4202 that are relatively arranged. The first hole wall 4201 and the second hole wall 4202 are both inclined surfaces. The first hole wall 4201 and the second hole wall 4202 present an inner eight structure, along the radial direction of the rubber wheel 42, and from the center of the wheel frame 420 to its edge direction X, the first hole wall 4201 and the second hole wall 4202 gradually incline toward the inner side of the narrowing section, so that the distance between the first hole wall 4201 and the second hole wall 4202 gradually decreases, thereby limiting the movement of the connecting portion 4213 along the X direction, ensuring the bonding strength of the rubber sleeve 421 on the wheel frame 420, and ensuring that the rubber sleeve 421 does not debond or run.

[0086] It can be understood that in other embodiments, the narrowing section may also be in other shapes, for example, the narrowing section may also be in the shape of a circular hole or a square hole.

[0087] like Fig.10 and Fig.11 As shown, in some embodiments, the end faces 4206 at both ends of the wheel frame 420 are respectively provided with limiting grooves 4203, optionally, the limiting grooves 4203 are annular grooves, and the rubber sleeve 421 also includes a first rib 4214 and a second rib 4215, the first rib 4214 and the second rib 4215 are respectively connected to the first rubber edge 4211 and the second rubber edge 4212, and the first rib 4214 and the second rib 4215 are respectively arranged in the corresponding limiting grooves 4203.

[0088] The first guard side 4214 and the second guard side 4215 are respectively connected to the inner edges of the first glue edge 4211 and the second glue edge 4212, and the end faces 4206 at both ends of the wheel frame 420 are respectively provided with limiting grooves 4203 that cooperate with the first guard side 4214 and the second guard side 4215. By setting the first guard side 4214 and the second guard side 4215 in the corresponding limiting grooves 4203 respectively, the risk of debonding of the first glue edge 4211 and the second glue edge 4212 is further reduced, and the reliability of the glue encapsulation is enhanced.

[0089] In some embodiments, the wheel frame 420 includes a frame 4204 and a convex ring 4205 convexly provided on the outer wall of the frame 4204, the rubber sleeve 421 is provided on the outer periphery of the convex ring 4205, the inner surface of the first rubber edge 4211 and the inner surface of the second rubber edge 4212 are respectively bonded to the two end faces 4206 of the convex ring 4205, and the limiting hole 4200 is opened on the inner periphery of the convex ring 4205 and passes through the two end faces of the convex ring 4205.

[0090] The wheel frame 420 includes a frame 4204 and a convex ring 4205. The frame 4204 is a hollow cylindrical structure. The convex ring 4205 is convexly arranged on the outer side of the frame 4204. Optionally, the frame 4204 and the convex ring 4205 are integrally formed. The rubber ring 4210 is bonded to the outer side of the convex ring 4205, and the first rubber edge 4211 and the second rubber edge 4212 are respectively bonded to the end faces 4206 of the convex ring 4205, so that the rubber sleeve 421 is wrapped around the outer periphery of the convex ring 4205.

[0091] In some embodiments, the inner edge of the first adhesive edge 4211 and the inner edge of the second adhesive edge 4212 are respectively bonded to the frame 4204 .

[0092] like Fig.11 As shown, the convex ring 4205 is arranged on the outer side surface of the skeleton 4204 and is located between the end surfaces 4206 of the skeleton 4204. The inner edge of the first glue edge 4211 is the side surface of the first glue edge 4211 facing the skeleton 4204, and the inner edge of the second glue edge 4212 is the side surface of the second glue edge 4212 facing the skeleton 4204. By bonding the inner edge of the first glue edge 4211 and the inner edge of the second glue edge 4212 to the outer side surface of the skeleton 4204 respectively, debonding at the inner edges of the first glue edge 4211 and the second glue edge 4212 can be further avoided.

[0093] Please refer to Figure 6 In some embodiments, the wheel assembly 40 also includes a second bearing 43, which is disposed between the wheel axle 41 and the wheel frame 420. The setting of the second bearing 43 is beneficial to increasing the structural strength of the wheel assembly 40 and reducing the friction between the wheel axle 41 and the wheel frame 420.

[0094] In some embodiments, the second bearing 43 and the wheel frame 420 are integrally formed, that is, the second bearing 43, the wheel frame 420 and the rubber sleeve 421 are integrally formed to ensure their structural strength. During the processing and preparation process, the wheel frame 420 can be thermoplastically formed on the second bearing 43 first, and then the rubber sleeve 421 can be thermoplastically formed on the wheel frame 420, so that the second bearing 43, the wheel frame 420 and the rubber sleeve 421 are integrally formed.

[0095] See also Figure 12 to Figure 14 , and see also Figure 2In some embodiments, the door body assembly 10 includes a plurality of hinge units 11, a plurality of door panels 12 and a plurality of back panels 13; each hinge unit 11 is respectively arranged at both ends of each door panel 12, and two adjacent hinge units 11 are hinged to each other. The hinge unit 11 includes a hinge body 110 and a support plate 111 fixedly connected to the inner side of the hinge body 110, each back panel 13 is plugged into and matched with each hinge body 110, and each back panel 13 and each support plate 111 are respectively located on both sides of each door panel 12, and each back panel 13 and each support plate 111 are respectively limited and matched with each door panel 12 to clamp each door panel 12 between the corresponding support plate 111 and the corresponding back panel 13.

[0096] like Figure 2 As shown, optionally, two adjacent hinge units 11 may be hinged via the connecting shaft 31 or the axle 41 mentioned above. For ease of explanation, the following description will only take the example of two adjacent hinge units 11 being hinged via the axle 41 as an example.

[0097] The hinge unit 11 includes a hinge body 110 and a support plate 111 that are fixedly connected. The hinge body 110 and the support plate 111 are both roughly plate-like structures. The hinge body 110 and the support plate 111 are fixedly connected to form a roughly "L" shape. The support plate 111 is arranged on the inner side of the hinge body 110. When assembling the lifting door 100, a plurality of hinge units 11 are combined with a plurality of wheel assemblies 40 and a guide wheel assembly 30 to form two groups of hinge assemblies, and then each door panel 12 and the window door panel structure 20 are fixedly assembled between the two groups of hinge assemblies through each back panel 13 to complete the assembly of the lifting door 100.

[0098] Specifically, for the door panel 12, when the door panel 12 is assembled and fixed, the door panel 12 is first placed on the support plates 111 of the two relatively arranged hinge units 11, and then the back panels 13 are respectively plugged and matched with the hinge bodies 110 of the hinge units 11, so that the door panel 12 is clamped and fixed between the back panels 13 and the support plates 111, and the assembly of the door panel 12 is completed. The assembly process of the door panel 12 is convenient and quick.

[0099] When the door panel 12 needs to be repaired or replaced, it is only necessary to remove the back panel 13 corresponding to the door panel 12 to take out the door panel 12 without removing the hinge units 11 and the wheel assemblies 40 at both ends of the door panel 12, which facilitates the repair and replacement of the door panel 12. Moreover, since there is no need to remove the corresponding hinge units 11, the overall structure of the hinge assembly will not be destroyed when replacing the door panel 12, and the structural stability of the hinge assembly will not be affected. That is, other door panels will not become loose during the replacement of the door panel 12, and the reliability is high.

[0100] It can be understood that in this embodiment, the back plate 13 is plugged into the hinge body 110 of the hinge unit 11, and the back plate 13 can be quickly and conveniently removed from the hinge unit 11 and the corresponding door panel 12 can be taken out, thereby improving the efficiency of repairing and replacing the door panel 12. In addition, the hinge units 11 have the same structure and are hinged in sequence from head to tail, which facilitates their assembly into hinge components of any length, helping to improve the versatility and applicability of the product.

[0101] like Fig.12 , Fig.13 and Fig.14 As shown, in some embodiments, a slot 1100 is opened on the hinge body 110, and the back panel 13 is inserted into the slot 1100 at one end facing the hinge body 110, and the back panel 13, the door panel 12 and the support panel 111 are fastened together to clamp the door panel 12 between the back panel 13 and the support panel 111.

[0102] The slot 1100 can be a square slot but is not limited thereto. For example, in other embodiments, the slot 1100 can also be a circular slot. The end of the back panel 13 facing the hinge body 110 is inserted into the slot 1100, and the back panel 13, the door panel 12 and the support plate 111 are fastened together by fasteners to fix the door panel 12. Optionally, the fasteners can be bolts, screws, etc.

[0103] Specifically, when assembling the door panel 12, first place the door panel 12 on the support plates 111 of the two relatively arranged hinge units 11, then insert one end of the back panel 13 into the slot 1100 on the hinge body 110, and finally use fasteners to achieve a fixed connection between the back panel 13, the door panel 12 and the support plate 111, so that the door panel 12 is firmly installed between the support plate 111 and the back panel 13. After assembly, the two side surfaces of the door panel 12 are respectively against the back panel 13 and the support plate 111 to ensure that the door panel 12 does not loosen or shake.

[0104] When the door panel 12 needs to be repaired or replaced, it is only necessary to unscrew the fasteners and remove the back panel 13 from the slot 1100 , and then the door panel 12 can be taken out for repair or replacement, which is convenient and quick.

[0105] In some embodiments, a folded edge 131 is provided at one end of the back plate 13 facing the hinge body 110 , and the folded edge 131 is in abutment with a surface of one side of the hinge body 110 facing away from the door panel 12 .

[0106] Optionally, the back plate 13 and the folded edge 131 are integrally formed, and the back plate 13 is bent toward one end of the hinge body 110 to form the folded edge 131. The folded edge 131 may be a roughly plate-shaped structure, and the folded edge 131 and the back plate 13 are arranged at an angle, for example, the folded edge 131 and the back plate 13 are arranged at a right angle, and in addition, the end of the back plate 13 may also present a roughly arc-shaped hook structure with the folded edge 131.

[0107] The size of the slot 1100 is slightly larger than that of the folded edge 131 , so that the folded edge 131 can be easily abutted against the surface of the hinge body 110 facing away from the door panel 12 after passing through the slot 1100 , thereby reducing the difficulty of assembly.

[0108] During assembly, align the folded edge 131 on the back panel 13 with the slot 1100 on the hinge body 110. After the folded edge 131 passes through the slot 1100, it abuts against the side surface of the hinge body 110 facing away from the door panel 12. Then, fasteners are used to fix the back panel 13, the door panel 12 and the support panel 111.

[0109] In this embodiment, the abutment between the folded edge 131 and the hinge body 110 limits the relative movement between the back panel 13 and the door panel 12, thereby ensuring the compactness of the assembly among the back panel 13, the hinge unit 11 and the door panel 12, and preventing the back panel 13 from moving relative to the hinge unit 11 and driving the door panel 12 to move during use, thereby preventing the door panel 12 from shaking or loosening, thereby ensuring the assembly reliability of the door panel 12.

[0110] Optionally, the folded edge 131 is disposed on a side of the back panel 13 facing away from the door panel 12 , so that during assembly, it is convenient to tilt the back panel 13 so that the folded edge 131 passes through the slot 1100 .

[0111] In some embodiments, the back panel 13 is provided with a clamping edge 132 at opposite ends along the width direction of the door panel 12 (see FIG. Fig.14 ), the back panel 13 and the two clamping edges 132 are combined to form a positioning groove, and a positioning protrusion 121 is provided on the side of the door panel 12 facing the back panel, and the positioning protrusion 121 is clamped in the positioning groove. The positioning protrusion 121 and the positioning groove are limited to improve the reliability of assembly stability, and further prevent the door panel 12 from loosening or shaking. In addition, during the installation of the back panel 13, the positioning protrusion 121 facilitates the determination of the assembly position of the back panel 13, reducing the difficulty of assembling the back panel 13.

[0112] like Fig.13 and Fig.14As shown, in some embodiments, the door body assembly 10 also includes a first fastener 101 and a second fastener 102, and the back panel 13, the door panel 12 and the support plate 111 are fastened together by the first fastener 101 and the second fastener 102, a connecting hole 120 is opened on the door panel 12, and a first mounting hole 130 and a second mounting hole 1110 corresponding to the connecting hole 120 are opened on the back panel 13 and the support plate 111 respectively, one end of the first fastener 101 passes through the first mounting hole 130 and is located in the connecting hole 120, and one end of the second fastener 102 passes through the second mounting hole 1110 and is fastened together with the first fastener 101 in the connecting hole 120.

[0113] The positions of the back panel 13 and the support plate 111 correspond to each other, and the door panel 12 is located between the back panel 13 and the support plate 111. The axis lines of the connecting hole 120, the first mounting hole 130, and the second mounting hole 1110 are collinear. During assembly, one end of the second fastener 102 is first inserted into the second mounting hole 1110 and the connecting hole 120 in sequence, and then one end of the first fastener 101 that matches it is inserted into the first mounting hole 130 in sequence and the first fastener 101 and the second fastener 102 are locked in the connecting hole 120. When the first fastener 101 and the second fastener 102 are locked, the door panel 12 can be fixed between the back panel 13 and the support plate 111.

[0114] In the present embodiment, the door panel 12 is fixed by locking the first fastener 101 and the second fastener 102. This method has good assembly stability and the door panel 12 is not easy to loosen after assembly. When disassembling the door panel 12, it is only necessary to remove the first fastener 101 so that the first fastener 101 and the second fastener 102 are unlocked, and the door panel 12 can be taken out, which is convenient for the maintenance and replacement of the door panel 12.

[0115] The first fastener 101 and the second fastener 102 are mutually locking bolts or locking rivets, for example, the first fastener 101 is a sub-bolt, the second fastener 102 is a mother bolt, the sub-bolt and the mother bolt are mutually locking bolts, the head of the sub-bolt has an external thread, and the head of the mother bolt is provided with a threaded hole. During assembly, the head of the mother bolt is first passed through the second mounting hole 1110 and then reaches the connecting hole 120, and then the head of the sub-bolt is passed through the first mounting hole 130 and screwed into the threaded hole on the head of the mother bolt, so that the sub-bolt and the mother bolt are threadedly connected and locked.

[0116] In some embodiments, a plurality of first fasteners 101 and matching second fasteners 102 may be provided, and the installation stability of the door panel 12 is ensured by the plurality of first fasteners 101 and second fasteners 102 .

[0117] In addition, the door panel 12 may also be fixed by other fasteners. For example, a screw may be passed through the second mounting hole 1110 , the connecting hole 120 , and the first mounting hole 130 in sequence and then fastened with a nut to fix the door panel 12 .

[0118] In some embodiments, the door assembly 10 further includes a third fastener 103, through which the back plate 13 and the door body are fastened together to further enhance assembly stability. Optionally, the third fastener 103 may be a bolt, a screw, or the like.

[0119] It should be noted that each door panel 12 can be fixed by one or more back panels 13. For example, in some embodiments, one door panel 12 can be fixed by two back panels 13, that is, each door panel 12 corresponds to two back panels 13, and the two back panels 13 correspond to two support panels 111 respectively, and the back panels 13 are fastened and matched with the corresponding support panels 111 by the first fastener 101 and the second fastener 102 to achieve the fixation of the door panel 12.

[0120] For example, in some other embodiments, the door panel 12 can also be fixed by four back panels 13, each door panel 12 corresponds to four smaller back panels 13, and the four back panels 13 are respectively located at the four corners of the door panel 12, and the back panels 13 are fastened and matched with the corresponding support panels 111 by a plurality of first fasteners 101 and second fasteners 102 to achieve the fixation of the door panel 12. Fixing the door panel 12 by four smaller back panels 13 can not only ensure the reliability of the fixation of the door panel 12, but also reduce the material consumption of the back panel 13 and reduce the overall weight of the back panel 13, which helps to reduce costs and reduce the overall weight of the lifting door 1000.

[0121] In some embodiments, the door body assembly 10 also includes a window door panel structure 14, which is arranged between two relatively arranged hinge units 11; the window door panel structure 14 includes a frame 140 and a transparent plate 143, the frame 140 is clamped between the support plate 111 and the back plate 13, and the transparent plate 143 is arranged on the inner side of the frame 140.

[0122] See also Fig.15 Also refer to Figure 1 In some embodiments, the lifting door 100 further includes a window door panel structure 14 , which is disposed between two hinge units 11 disposed opposite to each other. The window door panel structure 14 includes a frame 140 and a transparent plate 143 disposed inside the frame 140 .

[0123] Specifically, the window door panel structure 14 has one or more pieces, such as Figure 1The lifting door 100 shown has a plurality of door panels 12 and two window door panel structures 14, wherein adjacent door panels 12 and window door panel structures 14 are hinged to each other, two adjacent door panels 12 are hinged to each other, and two adjacent window door panel structures 14 are also hinged to each other.

[0124] The door panel 12 is usually made of non-transparent materials, for example, the door panel 12 is made of stainless steel, color steel, galvanized steel, plate steel, aluminum alloy and other materials to ensure the structural strength of the door panel 12. The window door panel structure 14 includes a frame 140 and a transparent plate 143 fixedly arranged on the inner side of the frame 140. The frame 140 can be made of a relatively high-strength material to ensure the overall structural strength of the window door panel structure 14 and improve its anti-deformation ability. The transparent plate 143 is made of a light-transmitting plate material, for example, the transparent plate 143 can be made of transparent glass, transparent plastic and other materials. The situation inside the lifting door 100 can be observed through the transparent plate 143.

[0125] Compared with the prior art in which a perspective window is directly opened on the door panel 12, in this embodiment, an independent window door panel structure 14 is added, and a transparent plate 143 on the window door panel structure 14 is used for perspective. On the one hand, the window door panel structure 14 is an independent design, and the structural strength of the window door panel structure 14 is good, which ensures the overall structural strength of the lifting door 100. On the other hand, the transparent plate 143 on the inner side of the frame 140 is relatively large in area, which is conducive to expanding the field of view and improving the visual effect.

[0126] Optionally, there are multiple window door panel structures 14, and the see-through area can be further increased through multiple window door panel structures 14, so that the visibility of the lifting door 100 is larger, and the visual effect is further improved.

[0127] Optionally, the transparent plate 143 may be configured as a single layer or multiple layers, etc. The multiple layers may increase the thickness of the transparent plate 143 and ensure the structural strength of the transparent plate 143 .

[0128] In addition, it should be noted that the assembly and fixing method of the window door panel structure 14 is the same as the assembly and fixing method of the above-mentioned door panel 12, that is, the window door panel structure 14 is fixed between the corresponding support plate 111 and the back plate 13. The specific assembly and fixing process can refer to the assembly and fixing process of the door panel 12 above, which will not be repeated here.

[0129] See also Figures 15 to 17 In some embodiments, the frame 140 includes two oppositely disposed first frames 141 and two oppositely disposed second frames 142. The adjacent first frames 141 and second frames 142 are fixedly connected. The two first frames 141 and the two second frames 142 are arranged to form the frame 140. The transparent plate 143 is respectively plugged into and matched with the first frames 141 and the second frames 142.

[0130] like Fig.16 As shown, the frame 140 is a roughly rectangular frame structure, and the frame 140 is formed by two oppositely arranged first frames 141 and two oppositely arranged second frames 142. In this embodiment, the two first frames 141 are long sides, and the two second frames 142 are short sides.

[0131] The transparent plate 143 is a rectangular plate. The opposite ends of the transparent plate 143 along its width direction (the upper and lower ends of the transparent plate 143) are respectively plugged into the two first frames 141, and the opposite ends of the transparent plate 143 along its length direction (the left and right ends of the transparent plate 143) are respectively plugged into the two second frames 142.

[0132] When the transparent plate 143 and the frame 140 are assembled, the two first frames 141 and the two second frames 142 are first plugged into the transparent plate 143 respectively, and then the adjacent first frames 141 and second frames 142 are fixedly connected to complete the assembly between the transparent plate 143 and the frame 140.

[0133] Optionally, the adjacent first frame 141 and second frame 142 are fixedly connected in a detachable manner to facilitate maintenance and replacement of the transparent plate 143. For example, the first frame 141 and the second frame 142 can be fixedly connected by fasteners such as bolts and screws. In addition, the first frame 141 and the second frame 142 can also be fixedly connected by welding or the like.

[0134] like Fig.16 and Fig.17 As shown, in some embodiments, the two second frames 142 are respectively located between the two first frames 141, a first threaded hole 1410 is opened on the first frame 141, and a second threaded hole 1420 is opened on the second frame 142. The first threaded hole 1410 and the second threaded hole 1420 are fastened together by fasteners such as bolts and screws to achieve a fixed connection between the first frame 141 and the second frame 142.

[0135] In some embodiments, a first plugging groove 1411 is opened on the inner side of the two first frames 141, a second plugging groove 1421 is opened on the inner side of the two second frames 142, and the opposite ends of the transparent plate 143 along the width direction are respectively inserted into the two first plugging grooves 1411, and the opposite ends of the transparent plate 143 along the length direction are respectively inserted into the two second plugging grooves 1421.

[0136] In this embodiment, the first frame 141 and the second frame 142 are respectively provided with a first plugging groove 1411 and a second plugging groove 1421 to be plugged into the transparent plate 143 . This method does not damage the overall structure of the transparent plate 143 , thus ensuring the structural strength of the transparent plate 143 .

[0137] See also Fig.18 and Fig.19 In some embodiments, a first clamping portion 1430 is provided at the edge of the transparent plate 143 (see Fig.17 ), a second clamping portion 1412 is provided on the inner side wall of the first plug-in slot 1411, the first clamping portion 1430 is clamped with the second clamping portion 1412, the first clamping portion 1430 and the second clamping portion 1412 are clamping slots and clamping strips to each other, and the length direction of the clamping slots and the clamping strips is parallel to the length direction of the window door panel structure 14.

[0138] For example, the first clamping portion 1430 is a clamping slot and the second clamping portion 1412 is a clamping strip, that is, a clamping slot is provided on the transparent plate 143 and a clamping strip is provided on the inner side wall of the first plugging slot 1411 , and the sizes of the clamping slot and the clamping strip are matched.

[0139] During assembly, first align the card strip with the card slot, then move the first frame 141 along the length direction of the card slot so that the card strip is inserted into the card slot, completing the assembly between the transparent plate 143 and the first frame 141, then plug the second frame 142 into the transparent plate 143, and fix the adjacent first frame 141 and second frame 142 together to complete the assembly between the transparent plate 143 and the frame 140.

[0140] After assembly, the upper and lower ends of the transparent plate 143 are always in contact with the two first frames 141 through the clamping cooperation between the first clamping portion 1430 and the second clamping portion 1412, thereby improving the compactness of assembly between the transparent plate 143 and the first frames 141 and ensuring the structural strength of the window door panel structure 14. Especially when the lengths of the two first frames 141 are long, the above structure can well prevent the first frames 141 from bending and deforming, thereby improving the overall structural strength of the window door panel structure 14.

[0141] See also Fig. 20 In some embodiments, the window door panel structure 14 further includes a vertical frame 144 . The vertical frame 144 is located between the two second frames 142 . The two ends of the vertical frame 144 are respectively connected to the two first frames 141 .

[0142] like Fig. 20 As shown, the vertical frame 144 is substantially in a rod-shaped structure and is parallel to the second frame 142 . One or more vertical frames 144 may be provided. Optionally, the vertical frame 144 may have substantially the same structure as the second frame 142 .

[0143] The vertical frame 144 is located between the two second frames 142. For example, the vertical frame 144 can be located in the middle of the frame 140. The two ends of the vertical frame 144 are respectively connected to the two first frames 141. For example, the two ends of the vertical frame 144 can be connected to the two first frames 141 by fasteners, snap-fitting, etc.

[0144] In this embodiment, by adding a vertical frame 144, the middle parts of the two first frames 141 are fixed to each other through the vertical frame 144, thereby improving the structural compactness and structural strength of the window door panel structure 14 and preventing the first frames 141 from bending and deforming when the length is long.

[0145] It is understandable that the number of vertical frames 144 can be one or more. For example, when the first frame 141 is longer, multiple vertical frames 144 can be evenly spaced between the two second frames 142 to ensure the overall structural stability of the window door panel structure 14.

[0146] It should be noted that, when a vertical frame 144 is provided and the two ends of the vertical frame 144 are connected to the two first frames 141 by fasteners, snap connections, etc., it is also unnecessary to provide the above-mentioned card slots and card strips, thereby avoiding the inconvenience of providing card slots and card strips when the first frames 141 and the transparent plate 143 are longer, thereby reducing the processing cost.

[0147] See also Fig.21 and Fig. 22 In some embodiments, the transparent plates 143 have at least two pieces, two adjacent transparent plates 143 are separated by a vertical frame 144 , and the two adjacent transparent plates 143 are plugged into and matched with the vertical frame 144 .

[0148] like Fig.21 As shown, Fig.21 An example is given of a situation where two transparent plates 143 are provided, in which case the vertical frame 144 is provided between the two transparent plates 143, that is, the transparent plate 143 is located between the vertical frame 144 and the corresponding second frame 142, and the upper and lower ends of the transparent plate 143 are respectively plugged into the two first frames 141, and the left and right ends of the transparent plate 143 are respectively plugged into the first frame 141 and the vertical frame 144, thereby fixing the transparent plate 143.

[0149] It is understandable that, when there are more transparent plates 143, the number of vertical frames 144 can be increased accordingly to fix each transparent plate 143. For example, when there are three transparent plates 143, the three transparent plates 143 are separated and fixed by two vertical frames 144.

[0150] In this embodiment, a plurality of transparent plates 143 are arranged side by side, and two adjacent transparent plates 143 are separated by a vertical frame 144. The size of each transparent plate 143 is relatively small, and the vertical frame 144 can strengthen the structural strength of the frame 140 while also achieving fixed positioning of the transparent plates 143, thereby ensuring assembly stability and improving the overall structural strength of the window door panel structure 14.

[0151] In some embodiments, third insertion slots 1440 are respectively provided on both sides of the vertical frame 144 (see Fig. 22 ), the two transparent plates 143 located on both sides of the vertical frame 144 are respectively plugged into and matched with the two third plug-in grooves 1440 to achieve fixed positioning of the transparent plates 143.

[0152] In some embodiments, both ends of the vertical frame 144 are slidably mounted on the two first frames 141 respectively, and the vertical frame 144 can slide along the direction of the first frame 141 to change the distance between the vertical frame 144 and the second frame 142, so as to be suitable for assembling transparent plates 143 of different lengths.

[0153] It is understandable that when the vertical frame 144 can be slidably installed on the two first side frames 141, the vertical frame 144 does not need to be fixed by screws. At this time, the transparent plate 143 and the first side frames 141 can be respectively provided with the above-mentioned card slots and card strips. The card slots and card strips are plugged into each other to ensure the assembly reliability between the transparent plate 143 and the two first side frames 141.

[0154] In some embodiments, bosses 1441 are respectively provided at both ends of the vertical frame 144 , and the two bosses 1441 are respectively installed in the corresponding first insertion grooves 1411 , so that the vertical frame 144 can move along the length direction of the first frame 141 by sliding the bosses 1441 in the first insertion grooves 1411 .

[0155] In this embodiment, the first plug-in groove 1411 on the first frame 141 can not only realize the fixed limitation of the transparent plate 143, but also realize the sliding fit with the boss 1441. In this way, there is no need to add an additional sliding groove on the first frame 141 for sliding fit with the boss 1441, which facilitates the simplification of the structure and reduces the structural cost and assembly cost.

[0156] Please refer to Fig.18 and Fig.19 In some embodiments, the window door panel structure 14 further includes a sealing strip 145. An installation cavity 1413 is opened on the outer side of the frame 140. The length direction of the installation cavity 1413 is parallel to the length direction of the window door panel structure 14. The sealing strip 145 is arranged in the installation cavity 1413 and is sealed against the adjacent door panel 12.

[0157] In the adjacent door panels 12 and the window door panel structure 14, an installation cavity 1413 can be opened on the first frame 141, and the sealing strip 145 is inserted into the installation cavity 1413 and abuts against the adjacent door panel 12, thereby sealing the gap between the adjacent door panels 12 and the window door panel structure 14 to ensure the sealing performance of the lifting door 100.

[0158] In addition, two adjacent door panels 12 and two adjacent window door panel structures 14 may also be sealed by a sealing strip 145 .

[0159] It should be noted that those skilled in the art should be aware that in the above embodiment, the two first frames 141 may be different in structure, and the two second frames 142 may be different in structure, and it is only necessary to fix the transparent plate 143 through the two first frames 141 and the two second frames 142.

[0160] It is understandable that the installation cavity 1413 may be provided in only one of the first frames 141 , and the other first frame 141 does not need to provide the installation cavity 1413 .

[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention is described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting door, characterized in that: include; Door assembly; A column, wherein a guide rail is arranged in the column, and the guide rail comprises a base plate, two side plates and two limit plates, wherein the two side plates are connected to both sides of the base plate, and the two limit plates are respectively connected to the sides of the two side plates away from the base plate, and the limit plates are arranged opposite to the base plate, and the base plate, the two side plates and the two limit plates enclose to form a guide groove; A guide wheel assembly, wherein the guide wheel assembly comprises a connecting shaft and a limiting wheel, one end of the connecting shaft is connected to the door body assembly, the limiting wheel is sleeved on the other end of the connecting shaft, the limiting wheel comprises a wheel body, a connecting ring and a limiting ring connected in sequence, the wheel body is arranged in the guide groove and rollingly cooperates with the side plate, the connecting ring is arranged between the two limiting plates and has a clearance fit with the limiting plates, the limiting ring is arranged on the outer side of the guide groove, and the limiting plate is located between the limiting ring and the wheel body; The distance between the limiting ring and the limiting plate is smaller than the distance between the wheel body and the base plate.

2. The lifting door according to claim 1, characterized in that: It also includes a wheel assembly, the wheel assembly includes a wheel axle and a rubber wheel, one end of the wheel axle is connected to the door body assembly, the rubber wheel is sleeved on the other end of the wheel axle, and the rubber wheel is arranged in the guide groove and rollingly cooperates with the side plate; Wherein, the distance between the wheel body and the limiting plate is smaller than the distance between the rubber wheel and the base plate.

3. The lifting door according to claim 2, characterized in that: The distance between the wheel body and the limiting plate is equal to the distance between the limiting ring and the limiting plate.

4. The lifting door according to claim 3, characterized in that: The distance between the wheel body and the limiting plate is smaller than the distance between the rubber wheel and the limiting plate.

5. The lifting door according to claim 3, characterized in that: The guide wheel assembly also includes a first bearing, which is arranged between the connecting shaft and the limiting wheel, and the first bearing and the limiting wheel are integrally formed.

6. The lifting door according to claim 5, characterized in that: The guide wheel assembly also includes a support pad, the inner wall of the limiting wheel is provided with an annular groove, and the support pad is arranged in the annular groove.

7. The lifting door according to claim 2, characterized in that: The guide wheel assemblies are respectively arranged at two ends of the upper part of the door body assembly.

8. The lifting door according to claim 2, characterized in that: The rubber wheel comprises a wheel frame and a rubber sleeve; The wheel bone is provided with a limiting hole, and the limiting hole passes through the two end surfaces of the wheel bone; The rubber sleeve is arranged on the outer periphery of the wheel frame, and the rubber sleeve includes a rubber ring, a first rubber edge, a second rubber edge and a connecting portion. The rubber ring is bonded to the outer side surface of the wheel frame, the first rubber edge and the second rubber edge are respectively connected to the two ends of the rubber ring, and the first rubber edge and the second rubber edge are respectively bonded to the two end surfaces of the wheel frame, the connecting portion is penetrated into the limiting hole, and the two ends of the connecting portion are respectively connected to the first rubber edge and the second rubber edge.

9. The lifting door according to claim 8, characterized in that: The end surfaces of both ends of the wheel frame are respectively provided with limiting grooves; The rubber sleeve further includes a first rib and a second rib, wherein the first rib and the second rib are respectively connected to the first rubber edge and the second rubber edge, and the first rib and the second rib are respectively arranged in the corresponding limiting grooves.

10. The lifting door according to any one of claims 1 to 9, characterized in that: The door assembly includes a plurality of hinge units, a plurality of door panels and a plurality of back panels; Each of the hinge units is respectively arranged at the two ends of each of the door panels, and two adjacent hinge units are hinged through the connecting shaft. The hinge unit includes a hinge body and a support plate fixedly connected to the inner side of the hinge body. Each of the back plates is plugged into and matched with each of the hinge bodies, and each of the back plates and the support plates are respectively located on both sides of each of the door panels. Each of the back plates and the support plates are respectively limited and matched with each of the door panels to clamp each of the door panels between the corresponding support plate and the corresponding back plate.

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