Lifting door

Abstract

The utility model relates to the technical field of industrial doors, and discloses a lifting door which comprises two sets of hinge units, a plurality of door plates and a plurality of back plates, each set of hinge units comprises a plurality of hinge units, every two adjacent hinge units are hinged, and each hinge unit comprises a hinge body and a supporting plate; the door plates are arranged between the two hinge assemblies, each door plate is located between the two oppositely-arranged hinge units, the back plates are matched with the hinge bodies in an inserted mode, the back plates and the supporting plates are located on the two sides of the door plates respectively and matched with the door plates in a limiting mode, and therefore the door plates are clamped and fixed between the corresponding supporting plates and the corresponding back plates. In the embodiment, the back plate is matched with the hinge main body of the hinge unit in an inserted mode, the back plate can be rapidly and conveniently detached from the hinge unit, the door plate can be taken out, the hinge units at the two ends of the door plate do not need to be detached, and the door plate can be conveniently maintained and replaced.

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 components such as a door body, hinges, a back panel and a wheel assembly. The door body is composed of multiple door panels. The hinges and the back panel are located on both sides of the door panels. During assembly, the two adjacent door panels are connected by hinges, the axle of the wheel assembly is inserted into the hinge hole of the hinge, and then the hinges and the back panel are fixed to ensure that the door panel is firmly fixed.

[0004] However, when a door panel of the lift gate needs to be replaced, the two sets of wheel assemblies at both ends of the door panel, as well as the corresponding hinges and back panels, need to be removed before the door panel can be removed for replacement. Therefore, the process of disassembling and replacing the door panel is extremely troublesome, time-consuming and labor-intensive. Utility Model Content

[0005] The embodiment of the utility model aims to provide a lifting door to solve the technical problem of inconvenient replacement of the door panel of the lifting door in the prior art.

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

[0007] Two groups of hinge assemblies, the two groups of hinge assemblies are arranged opposite to each other, each group of hinge assemblies includes a plurality of hinge units, two adjacent hinge units are hinged, and the hinge unit includes a hinge body and a support plate fixedly connected to the inner side of the hinge body;

[0008] A plurality of door panels, wherein the plurality of door panels are arranged between two sets of hinge components, and each door panel is located between two hinge units arranged opposite to each other;

[0009] A plurality of back panels are provided, each of which is plugged into and matched with each of the hinge bodies. Each of the back panels and each of the support panels are located on both sides of each of the door panels and are limitedly matched with each of the door panels to clamp each of the door panels between the corresponding support panels and the corresponding back panels.

[0010] In some embodiments, a slot is provided on the hinge body, and the back plate is inserted into the slot at one end facing the hinge body, and the back plate, the door plate and the support plate are fastened together to clamp the door plate between the back plate and the support plate.

[0011] In some embodiments, a folded edge is provided at one end of the back plate facing the hinge body, and the folded edge abuts against a side surface of the hinge body facing away from the door panel.

[0012] In some embodiments, the back panel is provided with clamping edges at opposite ends along the width direction of the door panel, and the back panel and the two clamping edges are combined to form a positioning groove. A positioning protrusion is provided on the side of the door panel facing the back panel, and the positioning protrusion is clamped in the positioning groove.

[0013] In some embodiments, it further comprises a first fastener and a second fastener, and the back panel, the door panel and the support panel are fastened and matched by the first fastener and the second fastener;

[0014] A connecting hole is provided on the door panel, and a first mounting hole and a second mounting hole corresponding to the connecting hole are respectively provided on the back panel and the support plate, one end of the first fastener passes through the first mounting hole and is located in the connecting hole, and one end of the second fastener passes through the second mounting hole and is fastened with the first fastener in the connecting hole.

[0015] In some embodiments, each group of the hinge assemblies further includes a plurality of wheel assemblies, and two adjacent hinge units are hingedly connected via the wheel axles of the wheel assemblies.

[0016] In some embodiments, the hinge body includes a first body and a second body, the first body and the second body are riveted and fixed, the first body and the second body are respectively provided with a first sub-groove and a second sub-groove, the first sub-groove and the second sub-groove are connected to form the slot.

[0017] In some embodiments, a connecting hole is formed on the first body, a rivet column is protruded on the second body, the rivet column is passed through the connecting hole, a flange is formed on one end of the rivet column away from the second body, and the flange abuts against a side surface of the first body facing away from the second body.

[0018] In some embodiments, a first hinge plate and a second hinge plate are respectively provided at both ends of the first body, a third hinge plate and a fourth hinge plate are respectively provided at both ends of the second body, and in two adjacent hinge units, the second hinge plate and the fourth hinge plate of one hinge unit are located between the first hinge plate and the third hinge plate of the other hinge unit, and a first axial hole, a second axial hole, a third axial hole and a fourth axial hole are respectively provided on the first hinge plate, the second hinge plate, the third hinge plate and the fourth hinge plate, and the wheel axle of the wheel assembly is passed through the third axial hole, the fourth axial hole, the second axial hole and the first axial hole.

[0019] In some embodiments, a column is further included, a guide rail is disposed in the column, the wheel assembly includes an axle and a rubber wheel sleeved on the axle, and the rubber wheel of the wheel assembly is disposed in the guide rail.

[0020] Compared with the prior art, in the lifting door provided in the embodiment of the utility model, the back panel is plugged into the hinge body of the hinge unit. When the door panel needs to be repaired or replaced, the back panel can be quickly and conveniently removed from the hinge unit and the door panel can be taken out without removing the hinge units at both ends of the door panel, thereby facilitating the repair and replacement of the door panel. Furthermore, since there is no need to remove the corresponding hinge units, the overall structure of the hinge assembly will not be destroyed when the door panel is replaced, 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, and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a lifting door provided by an embodiment of the utility model;

[0023] Figure 2 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;

[0024] Figure 3 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;

[0025] Figure 4 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;

[0026] Figure 5 It is a schematic diagram of the exploded structure of the hinge unit in the embodiment of the utility model;

[0027] Figure 6 It is a schematic cross-sectional structure diagram of two adjacent hinge units in an embodiment of the utility model after being assembled with a wheel assembly;

[0028] Figure 7 It is a schematic diagram of the cross-sectional structure of the first body and the second body after the flanges are riveted together in the embodiment of the utility model;

[0029] Figure 8 It is a three-dimensional structural schematic diagram of a lifting door provided by another embodiment of the utility model;

[0030] Fig. 9This is a schematic diagram of the assembly structure of the window door panel structure in the embodiment of the utility model;

[0031] Fig.10 This is a schematic diagram of the exploded structure of the window door panel structure in the embodiment of the utility model;

[0032] Fig.11 yes Fig.10 A partial enlarged view of the middle A;

[0033] Fig.12 It is a schematic diagram of the three-dimensional structure of the first frame in the embodiment of the utility model;

[0034] Fig.13 yes Fig. 9 Schematic diagram of the cross-sectional structure of the central window door panel structure along the BB direction;

[0035] Fig.14 This is a schematic diagram of the assembly structure of the window door panel structure in the embodiment of the utility model;

[0036] Fig.15 This is a schematic diagram of the exploded structure of the window door panel structure in the embodiment of the utility model;

[0037] Fig.16 It is a three-dimensional structural schematic diagram of a vertical frame in an embodiment of the utility model;

[0038] Fig.17 It is a schematic cross-sectional structure diagram of a wheel assembly in an embodiment of the utility model;

[0039] Fig.18 This is a schematic diagram of the structure of the rubber wheel in the embodiment of the utility model;

[0040] Fig.19 It is a schematic diagram of the cross-sectional structure of the rubber sleeve in the embodiment of the utility model;

[0041] Fig. 20 It is a schematic diagram of the cross-sectional structure of the rubber wheel in the embodiment of the utility model;

[0042] Fig.21 It is a three-dimensional structural schematic diagram of the wheel bone in the embodiment of the utility model;

[0043] Fig. 22 It is a schematic cross-sectional structure diagram of the rubber wheel in another perspective of the embodiment of the utility model; Fig.23 It is a three-dimensional structural schematic diagram of a lifting door in another embodiment of the utility model; Fig.24 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; Fig.25 It is a schematic diagram of the matching relationship between the wheel assembly and the guide rail in the embodiment of the utility model; Fig.26 It is a schematic cross-sectional structure diagram of the guide wheel assembly in the embodiment of the utility model;

[0044] The reference numerals are as shown in the following table:

[0045]

[0046] DETAILED DESCRIPTION

[0047] 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.

[0048] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0049] The following will be combined with the attached Figures 1 to 26 The lifting door provided in the embodiment of the utility model is described in detail.

[0050] See also Figures 1 to 4 The embodiment of the utility model provides a lifting door 100, including two groups of hinge assemblies 10, multiple door panels 20 and multiple back panels 30. The two groups of hinge assemblies 10 are arranged opposite to each other, and each group of hinge assemblies 10 includes multiple hinge units 11. Two adjacent hinge units 11 are hinged, and each hinge unit 11 includes a hinge body 110 and a support plate 111 fixedly connected to the inner side of the hinge body 110; multiple door panels 20 are arranged between the two groups of hinge assemblies 10, and each door panel 20 is located between two relatively arranged hinge units 11. Each back panel 30 is respectively plugged into each hinge body 110, and each back panel 30 and each support plate 111 are respectively located on both sides of each door panel 20 and are limitedly matched with each door panel 20 to clamp each door panel 20 between the corresponding support plate 111 and the corresponding back panel 30.

[0051] like Figure 2As shown, the hinge unit 11 includes a hinge body 110 and a support plate 111 which 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 hinge body 110 is arranged at the end of the door panel 20, and the support plate 111 is arranged on the side of the hinge body 110 facing the door panel 20. The support plate 111 and the back panel 30 are parallel to each other. When assembling the lifting door 100, a plurality of hinge units 11 are assembled into two groups of hinge assemblies 10, and then each door panel 20 is fixedly assembled between the two groups of hinge assemblies 10 through each back panel 30 to complete the assembly of the lifting door 100.

[0052] Specifically, for each door panel 20, when assembling and fixing the door panel 20, the door panel 20 is first placed on the support plates 111 of the two relatively arranged hinge units 11, and then the back panels 30 are respectively plugged into and matched with the hinge bodies 110 of the hinge units 11, so that the door panel 20 is clamped and fixed between the back panels 30 and the support plates 111, and the assembly of the door panel 20 is completed. The assembly process of the door panel 20 is convenient and quick.

[0053] When a door panel 20 needs to be repaired or replaced, it is only necessary to remove the back panel 30 corresponding to the door panel 20 to take out the door panel 20 without removing the hinge units 11 at both ends of the door panel 20, thereby facilitating the repair and replacement of the door panel 20. Furthermore, since there is no need to remove the corresponding hinge units 11, the overall structure of the hinge assembly 10 will not be damaged when the door panel 20 is replaced, and the structural stability of the hinge assembly 10 will not be affected. That is, other door panels 20 will not become loose during the replacement of the door panel 20, and the reliability is high.

[0054] It can be understood that in this embodiment, the back plate 30 is plugged into the hinge body 110 of the hinge unit 11, and the back plate 30 can be quickly and conveniently removed from the hinge unit 11 and the door panel 20 can be taken out, thereby improving the efficiency of repairing and replacing the door panel 20. 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 assemblies 10 of any length, helping to improve the versatility and applicability of the product.

[0055] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, a slot 1100 is opened on the hinge body 110, and the back panel 30 is inserted into the slot 1100 at one end facing the hinge body 110, and the back panel 30, the door panel 20 and the support plate 111 are fastened together to clamp the door panel 20 between the back panel 30 and the support plate 111.

[0056] 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 30 facing the hinge body 110 is inserted into the slot 1100, and the back panel 30, the door panel 20 and the support plate 111 are fastened together by fasteners to fix the door panel 20. Optionally, the fasteners can be bolts, screws, etc.

[0057] Specifically, when assembling the door panel 20, first place the door panel 20 on the support plates 111 of the two relatively arranged hinge units 11, then insert one end of the back panel 30 into the slot 1100 on the hinge body 110, and finally realize the fixed connection between the back panel 30, the door panel 20 and the support plate 111 through fasteners, so that the door panel 20 is firmly installed between the support plate 111 and the back panel 30. After assembly, the two side surfaces of the door panel 20 are respectively against the back panel 30 and the support plate 111 to ensure that the door panel 20 is not loose or shaking.

[0058] When the door panel 20 needs to be repaired or replaced, it is only necessary to unscrew the fasteners and remove the back panel 30 from the slot 1100, and then the door panel 20 can be taken out for repair or replacement, which is convenient and quick.

[0059] In some embodiments, a folded edge 31 is provided at one end of the back plate 30 facing the hinge body 110 , and the folded edge 31 is in abutment with a surface of the hinge body 110 facing away from the door panel 20 .

[0060] Optionally, the back plate 30 and the folded edge 31 are integrally formed, and the back plate 30 is bent toward one end of the hinge body 110 to form the folded edge 31. The folded edge 31 may be a roughly plate-shaped structure, and the folded edge 31 and the back plate 30 are arranged at an angle, for example, the folded edge 31 and the back plate 30 are arranged at a right angle, and in addition, the end of the back plate 30 may also present a roughly arc-shaped hook structure with the folded edge 31.

[0061] The size of the slot 1100 is slightly larger than that of the folded edge 31 , so that the folded edge 31 can be inserted through the slot 1100 and abut against the surface of the hinge body 110 on the side facing away from the door panel 20 , thereby reducing the difficulty of assembly.

[0062] During assembly, align the folded edge 31 on the back panel 30 with the slot 1100 on the hinge body 110. After the folded edge 31 passes through the slot 1100, it abuts against the side surface of the hinge body 110 facing away from the door panel 20. Then, fasteners are used to fix the back panel 30, the door panel 20 and the support panel 111.

[0063] In this embodiment, the abutment between the folded edge 31 and the hinge body 110 limits the relative movement between the back panel 30 and the door panel 20, thereby ensuring the compactness of the assembly among the back panel 30, the hinge unit 11 and the door panel 20, and preventing the back panel 30 from moving relative to the hinge unit 11 during use and driving the door panel 20 to move, thereby preventing the door panel 20 from shaking or loosening, thereby ensuring the assembly reliability of the door panel 20.

[0064] Optionally, the folded edge 31 is disposed on a side of the back panel 30 facing away from the door panel 20 , so that during assembly, it is convenient to tilt the back panel 30 so that the folded edge 31 passes through the slot 1100 .

[0065] In some embodiments, the back panel 30 is provided with a clamping edge 32 at opposite ends along the width direction of the door panel 20 (see Figure 4 ), the back panel 30 and the two clamping edges 32 are combined to form a positioning groove, and a positioning protrusion 22 is provided on the side of the door panel 20 facing the back panel, and the positioning protrusion 22 is clamped in the positioning groove. The positioning protrusion 22 and the positioning groove are limited to improve the reliability of assembly stability, and further prevent the door panel 20 from loosening or shaking. In addition, during the installation of the back panel 30, the positioning protrusion 22 facilitates the determination of the assembly position of the back panel 30, reducing the difficulty of assembling the back panel 30.

[0066] like Figure 3 and Figure 4 As shown, in some embodiments, the lifting door 100 also includes a first fastener 101 and a second fastener 102, and the back panel 30, the door panel 20 and the support plate 111 are fastened together by the first fastener 101 and the second fastener 102. A connecting hole 21 is provided on the door panel 20, and a first mounting hole 301 and a second mounting hole 1110 corresponding to the connecting hole 21 are respectively provided on the back panel 30 and the support plate 111. One end of the first fastener 101 passes through the first mounting hole 301 and is located in the connecting hole 21, 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 21.

[0067] The positions of the back panel 30 and the support plate 111 correspond to each other, and the door panel 20 is located between the back panel 30 and the support plate 111. The axis lines of the connecting hole 21, the first mounting hole 301, 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 21 in sequence, and then one end of the first fastener 101 that matches it is inserted into the first mounting hole 301 in sequence and the first fastener 101 and the second fastener 102 are locked in the connecting hole 21. When the first fastener 101 and the second fastener 102 are locked, the door panel 20 can be fixed between the back panel 30 and the support plate 111.

[0068] In the present embodiment, the door panel 20 is fixed by locking the first fastener 101 and the second fastener 102. This method has good assembly stability and the door panel 20 is not easy to loosen after assembly. When disassembling the door panel 20, 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 20 can be taken out, which is convenient for the maintenance and replacement of the door panel 20.

[0069] 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 to reach the connecting hole 21, and then the head of the sub-bolt is passed through the first mounting hole 301 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.

[0070] 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 20 is ensured by the plurality of first fasteners 101 and second fasteners 102 .

[0071] In addition, the door panel 20 may also be fixed by other fasteners. For example, a screw may be passed through the second mounting hole 1110 , the connecting hole 21 , and the first mounting hole 301 in sequence and then fastened to a nut to fix the door panel 20 .

[0072] In some embodiments, the lifting door 100 further includes a third fastener 103, through which the back plate 30 and the door body are fastened and connected, further enhancing assembly stability. Optionally, the third fastener 103 can be a bolt, a screw, or the like.

[0073] It should be noted that each door panel 20 can be fixed by one or more back panels 30. For example, in some embodiments, one door panel 20 can be fixed by two back panels 30, that is, each door panel 20 corresponds to two back panels 30, and the two back panels 30 correspond to two support panels 111 respectively, and the back panels 30 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 20.

[0074] For example, in some other embodiments, the door panel 20 may be fixed by four back panels 30, such as Figure 1As shown, each door panel 20 corresponds to four smaller back panels 30, and the four back panels 30 are respectively located at the four corners of the door panel 20. The back panels 30 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 20. Fixing the door panel 20 by four smaller back panels 30 can not only ensure the fixation reliability of the door panel 20, but also reduce the material consumption of the back panel 30 and reduce the overall weight of the back panel 30, which helps to reduce the cost and reduce the overall weight of the lifting door 100.

[0075] In some embodiments, each set of hinge assemblies 10 further includes a plurality of wheel assemblies 12 , and two adjacent hinge units 11 are hingedly connected via the wheel axles 120 of the wheel assemblies 12 to achieve the hinge connection between two adjacent door panels 20 .

[0076] See also Figures 5 to 7 In some embodiments, the hinge body 110 includes a first body 112 and a second body 113, which are riveted together, and a first sub-groove 1120 and a second sub-groove 1130 are respectively provided on the first body 112 and the second body 113, and the position of the first sub-groove 1120 corresponds to the position of the second sub-groove 1130 and is connected to form a slot 1100.

[0077] The first body 112 and the second body 113 are both roughly plate-shaped structures. The first body 112 is located on the inner side of the second body 113. The first body 112 and the second body 113 are attached to each other and fixedly connected by riveting. For example, the first body 112 and the second body 113 can be riveted together by riveting, etc., which can ensure the reliability of the connection between the first body 112 and the second body 113, and there is no need to use additional fasteners to fix the first body 112 and the second body 113, thereby saving material costs and assembly costs.

[0078] The folded edge 31 of the back panel 30 can pass through the first sub-groove 1120 and the second sub-groove 1130 in sequence, and make the folded edge 31 abut against the side surface of the second body 113 away from the first body 112, and then the back panel 30, the door panel 20 and the support panel 111 are fixed together by fasteners.

[0079] like Figure 5 and Figure 7 As shown, in some embodiments, a connecting hole 1121 is opened on the first body 112, and a rivet column 1131 is protruded on the second body 113. The rivet column 1131 is passed through the connecting hole 1121, and a flange 1132 is provided at one end of the rivet column 1131 away from the second body 113. The flange 1132 is abutted against a side surface of the first body 112 facing away from the second body 113.

[0080] The rivet column 1131 is adapted to the size of the connecting hole 1121, and one end of the rivet column 1131 is fixedly connected to the second body 113, and the other end of the rivet column 1131 passes through the connecting hole 1121 and is riveted with the flange 1132 of the first body 112, so that the end of the rivet column 1131 is radially expanded to form the flange 1132, and the flange 1132 is tightly pressed against the side surface of the first body 112 facing away from the second body 113, thereby realizing the riveting fixation of the first body 112 and the second body 113.

[0081] like Figure 7 As shown, in some embodiments, a riveting hole 1133 is opened on the end surface of the riveting column 1131, and the riveting column 1131 is a hollow columnar structure, which facilitates the pressure head of the riveting machine to be inserted into the connecting hole 1121 and roll the end surface of the riveting column 1131 into a flange 1132.

[0082] In some embodiments, a first hinge plate 114 and a second hinge plate 115 are respectively provided at both ends of the first body 112, and a third hinge plate 116 and a fourth hinge plate 117 are respectively provided at both ends of the second body 113. In two adjacent hinge units 11, the second hinge plate 115 and the fourth hinge plate 117 of one hinge unit 11 are located between the first hinge plate 114 and the third hinge plate 116 of the other hinge unit 11. A first axial hole 1140, a second axial hole 1150, a third axial hole 1160 and a fourth axial hole 1170 are respectively provided on the first hinge plate 114, the second hinge plate 115, the third hinge plate 116 and the fourth hinge plate 117. The wheel axle 120 of the wheel assembly 12 is sequentially penetrated through the third axial hole 1160, the fourth axial hole 1170, the second axial hole 1150 and the first axial hole 1140 to realize the hinge connection of the two adjacent hinge units 11.

[0083] Optionally, the first body 112 , the first hinge plate 114 and the second hinge plate 115 are integrally formed, and the second body 113 , the third hinge plate 116 and the fourth hinge plate 117 are integrally formed to ensure the structural strength thereof.

[0084] The first hinge plate 114 and the third hinge plate 116 are respectively located at one end of the hinge body 110, and the second hinge plate 115 and the fourth hinge plate 117 are respectively located at the other end of the hinge body 110. The first hinge plate 114 and the third hinge plate 116 are arranged at intervals, and the second hinge plate 115 and the fourth hinge plate 117 are arranged at intervals. The first hinge plate 114, the second hinge plate 115, the third hinge plate 116 and the fourth hinge plate 117 are respectively provided with a first axis hole 1140, a second axis hole 1150, a third axis hole 1160 and a fourth axis hole 1170.

[0085] Two adjacent hinge units 11 are assembled through the axle 120 of the wheel assembly 12. During assembly, one end of one of the hinge units 11 is first inserted into the other end of the other hinge unit 11, and the second hinge plate 115 and the fourth hinge plate 117 of one of the hinge units 11 are inserted between the first hinge plate 114 and the third hinge plate 116 of the other hinge unit 11, and the first shaft hole 1140, the second shaft hole 1150, the third shaft hole 1160 and the fourth shaft hole 1170 are aligned, and then the axle 120 of the wheel assembly 12 is inserted into the third shaft hole 1160, the fourth shaft hole 1170, the second shaft hole 1150 and the first shaft hole 1140 in sequence to achieve stable articulation of the two hinge units 11.

[0086] Optionally, among two adjacent hinge units 11, the first hinge plate 114 and the third hinge plate 116 of one hinge unit 11 are respectively clearance-matched with the second hinge plate 115 and the fourth hinge plate 117 of the other hinge unit 11, thereby ensuring the flexibility of the two adjacent hinge units 11 during relative rotation and avoiding abnormal noise caused by friction during rotation.

[0087] Optionally, after one end of the axle 120 of the wheel assembly 12 is inserted into the third axial hole 1160, the fourth axial hole 1170, the second axial hole 1150 and the first axial hole 1140 in sequence, the end of the axle 120 can be riveted to the first hinge plate 114 by riveting to limit the axial movement of the hinge unit 11 along the axle 120. Specifically, after the axle 120 of the wheel assembly 12 passes through the third axial hole 1160, the fourth axial hole 1170, the second axial hole 1150 and the first axial hole 1140 in sequence and protrudes from the end surface of the third hinge plate 116, an axial force can be applied to the axial end of the axle 120 by a punch to make the axial end of the axle 120 open radially, thereby achieving riveting of the axle 120 and the first hinge plate 114, so that the hinge unit 11 cannot move axially along the axle 120, thereby ensuring the assembly stability of the two adjacent hinge units 11 on the axle 120.

[0088] like Figure 5 and Figure 6 As shown, in some embodiments, the hinge assembly 10 also includes a sleeve 14, which is disposed between the second hinge plate 115 and the fourth hinge plate 117, one end of the sleeve 14 is inserted into the second axial hole 1150, and the other end of the sleeve 14 is inserted into the fourth axial hole 1170, and the axle 120 of the wheel assembly 12 is passed through the sleeve 14.

[0089] The shaft sleeve 14 is a roughly cylindrical structure. When two adjacent hinge units 11 are assembled through the wheel assembly 12, the wheel axle 120 is arranged in the shaft sleeve 14. The shaft sleeve 14 can protect the wheel axle 120 and reduce the wear when the hinge unit 11 and the wheel axle 120 rotate relative to each other, thereby improving the flexibility of the two adjacent hinge units 11 when rotating.

[0090] In some embodiments, the hinge assembly 10 further includes a washer 15 (see Figure 6 ), a washer 15 is disposed in the shaft sleeve 14 , one end surface of the washer 15 abuts against the first hinge plate 114 , and the other end surface abuts against the third hinge plate 116 , and the wheel axle 120 of the wheel assembly 12 is passed through the washer 15 .

[0091] The washer 15 has a cylindrical structure and is sleeved in the shaft sleeve 14. When assembling two adjacent hinge units 11, the shaft sleeve 14 is first assembled between the second hinge plate 115 and the fourth hinge plate 117 of one hinge unit 11, and the washer 15 is inserted into the shaft sleeve 14. Then, the second hinge plate 115 and the fourth hinge plate 117 are inserted between the first hinge plate 114 and the third hinge plate 116 of the other hinge unit 11. Finally, the axle 120 of the wheel assembly 12 passes through the third axial hole 1160, the washer 15 and the first axial hole 1140 in sequence, and then the axial end of the axle 120 is riveted.

[0092] When two adjacent hinge units 11 are assembled, the two ends of the washer 15 respectively abut against the first hinge plate 114 and the third hinge plate 116 of one of the hinge units 11, so that during the process of the punch riveting the axial end of the wheel axle 120, the distance between the first hinge plate 114 and the third hinge plate 116 of the hinge unit 11 can remain unchanged. Therefore, the first hinge plate 114 and the third hinge plate 116 of the hinge unit 11 will not squeeze the second hinge plate 115 and the fourth hinge plate 117 of the adjacent hinge unit 11, thereby reducing wear and abnormal noise during rotation and ensuring the flexibility of the two hinge units 11 during relative rotation.

[0093] In some embodiments, the support plate 111 has one piece, and the support plate 111 is fixedly connected to the first body 112 , or the support plate 111 is fixedly connected to the second body 113 .

[0094] In other embodiments, the support plate 111 has two pieces, one of which is fixed on the first body 112 and forms a roughly "L"-shaped structure with the first body 112, and the other is fixed on the second body 113 and forms a roughly "L-shaped structure" with the second body 113. After the first body 112 and the second body 113 are riveted and fixed, the two support plates 111 overlap.

[0095] See also Figure 8 and Fig. 9 In some embodiments, the lifting door further includes a window door panel structure 40 , which is disposed between two hinge units 11 disposed opposite to each other. The window door panel structure 40 includes a frame 41 and a transparent panel 42 disposed inside the frame 41 .

[0096] Specifically, the window door panel structure 40 has one or more pieces, such as Figure 8 The lifting door 100 shown has a plurality of door panels 10 and two window door panel structures 40, wherein adjacent door panels 10 and window door panel structures 40 are hinged to each other, two adjacent door panels 10 are hinged to each other, and two adjacent window door panel structures 40 are also hinged to each other.

[0097] The door panel 10 is usually made of non-transparent materials, for example, the door panel 10 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 10. The window door panel structure 40 includes a frame 41 and a transparent plate 42 fixedly arranged on the inner side of the frame 41. The frame 41 can be made of a relatively high-strength material to ensure the overall structural strength of the window door panel structure 40 and improve its anti-deformation ability. The transparent plate 42 is made of a light-transmitting plate material, for example, the transparent plate 42 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 42.

[0098] Compared with the prior art in which a perspective window is directly opened on the door panel 10, in this embodiment, an independent window door panel structure 40 is added, and a transparent plate 42 on the window door panel structure 40 is used for perspective. On the one hand, the window door panel structure 40 is an independent design, and the structural strength of the window door panel structure 40 is good, which ensures the overall structural strength of the lifting door 100. On the other hand, the transparent plate 42 on the inner side of the frame 41 is relatively large in area, which is conducive to expanding the field of view and improving the visual effect.

[0099] Optionally, there are multiple window door panel structures 40, and the see-through area can be further increased through multiple window door panel structures 40, so that the visibility of the lifting door 100 is larger, and the visual effect is further improved.

[0100] Optionally, the transparent plate 42 may be configured as a single layer or multiple layers, and the multiple layers may increase the thickness of the transparent plate 42 to ensure the structural strength of the transparent plate 42 .

[0101] In addition, it should be noted that the assembly and fixing method of the window door panel structure 40 is the same as the assembly and fixing method of the above-mentioned door panel 10, that is, the window door panel structure 40 is fixed between the corresponding support plate 111 and the back plate 30. The specific assembly and fixing process can refer to the assembly and fixing process of the door panel 10 above, which will not be repeated here.

[0102] See also Figures 10 to 12 In some embodiments, the frame 41 includes two oppositely disposed first frames 411 and two oppositely disposed second frames 412, the adjacent first frames 411 and the second frames 412 are fixedly connected, the two first frames 411 and the two second frames 412 are arranged to form the frame 41, and the transparent plate 42 is respectively plugged into and matched with the first frames 411 and the second frames 412.

[0103] like Fig.10 As shown, the frame 41 is a roughly rectangular frame structure, and the frame 41 is formed by two oppositely arranged first frames 411 and two oppositely arranged second frames 412. In this embodiment, the two first frames 411 are long sides, and the two second frames 412 are short sides.

[0104] The transparent plate 42 is a rectangular plate. The opposite ends of the transparent plate 42 along its width direction (the upper and lower ends of the transparent plate 42) are respectively plugged into the two first frames 411, and the opposite ends of the transparent plate 42 along its length direction (the left and right ends of the transparent plate 42) are respectively plugged into the two second frames 412.

[0105] When the transparent plate 42 and the frame 41 are assembled, the two first frames 411 and the two second frames 412 are first plugged into the transparent plate 42 respectively, and then the adjacent first frames 411 and second frames 412 are fixedly connected to complete the assembly between the transparent plate 42 and the frame 41.

[0106] Optionally, the adjacent first frame 411 and second frame 412 are fixedly connected in a detachable manner to facilitate maintenance and replacement of the transparent plate 42. For example, the first frame 411 and the second frame 412 can be fixedly connected by fasteners such as bolts and screws. In addition, the first frame 411 and the second frame 412 can also be fixedly connected by welding or the like.

[0107] like Fig.10 and Fig.11 As shown, in some embodiments, the two second frames 412 are respectively located between the two first frames 411, the first frame 411 is provided with a first threaded hole 4110, and the second frame 412 is provided with a second threaded hole 4120. The first threaded hole 4110 and the second threaded hole 4120 are fastened together by fasteners such as bolts and screws to achieve a fixed connection between the first frame 411 and the second frame 412.

[0108] In some embodiments, a first plugging groove 4111 is opened on the inner side of the two first frames 411, a second plugging groove 4121 is opened on the inner side of the two second frames 412, and the opposite ends of the transparent plate 42 along the width direction are respectively inserted into the two first plugging grooves 4111, and the opposite ends of the transparent plate 42 along the length direction are respectively inserted into the two second plugging grooves 4121.

[0109] In this embodiment, the first frame 411 and the second frame 412 are respectively provided with a first plugging groove 4111 and a second plugging groove 4121 to be plugged into the transparent plate 42 . This method does not damage the overall structure of the transparent plate 42 , thus ensuring the structural strength of the transparent plate 42 .

[0110] See also Fig.12 and Fig.13 In some embodiments, a first clamping portion 420 is provided at the edge of the transparent plate 42 (see Fig.11 ), a second clamping portion 4112 is provided on the inner side wall of the first plug-in slot 4111, the first clamping portion 420 is clamped with the second clamping portion 4112, the first clamping portion 420 and the second clamping portion 4112 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 40.

[0111] For example, the first clamping portion 420 is a clamping slot and the second clamping portion 4112 is a clamping strip, that is, a clamping slot is provided on the transparent plate 42 and a clamping strip is provided on the inner side wall of the first plugging slot 4111 , and the sizes of the clamping slot and the clamping strip are matched.

[0112] During assembly, first align the card strip with the card slot, then move the first frame 411 along the length direction of the card slot so that the card strip is inserted into the card slot to complete the assembly between the transparent plate 42 and the first frame 411, then plug and match the second frame 412 with the transparent plate 42, and fix the adjacent first frame 411 and second frame 412 to complete the assembly between the transparent plate 42 and the frame 41.

[0113] After assembly, the upper and lower ends of the transparent plate 42 are always in contact with the two first frames 411 through the clamping cooperation between the first clamping portion 420 and the second clamping portion 4112, thereby improving the compactness of assembly between the transparent plate 42 and the first frames 411 and ensuring the structural strength of the window door panel structure 40. In particular, when the lengths of the two first frames 411 are long, the above structure can well prevent the first frames 411 from bending and deforming, thereby improving the overall structural strength of the window door panel structure 40.

[0114] See also Fig.14In some embodiments, the window door panel structure 40 further includes a vertical frame 43 , which is located between the two second frames 412 , and two ends of the vertical frame 43 are respectively connected to the two first frames 411 .

[0115] like Fig.14 As shown, the vertical frame 43 is substantially in a rod-shaped structure and is parallel to the second frame 412 . One or more vertical frames 43 may be provided. Optionally, the vertical frame 43 may have substantially the same structure as the second frame 412 .

[0116] The vertical frame 43 is located between the two second frames 412. For example, the vertical frame 43 can be located in the middle of the frame 41. The two ends of the vertical frame 43 are respectively connected to the two first frames 411. For example, the two ends of the vertical frame 43 can be connected to the two first frames 411 by fasteners, snap-fitting, etc.

[0117] In this embodiment, by adding a vertical frame 43, the middle parts of the two first frames 411 are fixed to each other through the vertical frame 43, thereby improving the structural compactness and structural strength of the window door panel structure 40 and preventing the first frames 411 from bending and deforming when the length is long.

[0118] It is understandable that the number of vertical frames 43 can be one or more. For example, when the first frame 411 is longer, multiple vertical frames 43 can be evenly spaced between the two second frames 412 to ensure the overall structural stability of the window door panel structure 40.

[0119] It should be noted that, in the case where a vertical frame 43 is provided and the two ends of the vertical frame 43 are connected to the two first frames 411 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 411 and the transparent plate 42 are longer, thereby reducing the processing cost.

[0120] See also Fig.14 and Fig.15 In some embodiments, the transparent plates 42 have at least two pieces, two adjacent transparent plates 42 are separated by a vertical frame 43, and the two adjacent transparent plates 42 are plugged into and matched with the vertical frame 43.

[0121] like Fig.15 As shown, Fig.15 An example is given of a situation where two transparent plates 42 are provided, in which case the vertical frame 43 is provided between the two transparent plates 42, that is, the transparent plate 42 is located between the vertical frame 43 and the corresponding second frame 412, and the upper and lower ends of the transparent plate 42 are respectively plugged into the two first frames 411, and the left and right ends of the transparent plate 42 are respectively plugged into the first frame 411 and the vertical frame 43, thereby fixing the transparent plate 42.

[0122] It is understandable that, when there are more transparent plates 42, the number of vertical frames 43 can be increased accordingly to fix each transparent plate 42. For example, when there are three transparent plates 42, the three transparent plates 42 are separated and fixed by two vertical frames 43.

[0123] In this embodiment, a plurality of transparent plates 42 are arranged side by side, and two adjacent transparent plates 42 are separated by a vertical frame 43. The size of each transparent plate 42 is relatively small, and the vertical frame 43 can strengthen the structural strength of the frame 41 while also achieving fixed positioning of the transparent plate 42, thereby ensuring assembly stability and improving the overall structural strength of the window door panel structure 40.

[0124] In some embodiments, third insertion slots 430 are respectively provided on both sides of the vertical frame 43 (see Fig.16 ), the two transparent plates 42 located on both sides of the vertical frame 43 are respectively plugged into and matched with the two third plug-in grooves 430 to achieve fixed positioning of the transparent plates 42.

[0125] In some embodiments, both ends of the vertical frame 43 are slidably mounted on the two first frames 411 , and the vertical frame 43 can slide along the direction of the first frame 411 to change the distance between the vertical frame 43 and the second frame 412 , thereby being suitable for assembling transparent panels 42 of different lengths.

[0126] It can be understood that when the vertical frame 43 can be slidably installed on the two first frames 411, the vertical frame 43 does not need to be fixed by screws. At this time, the transparent plate 42 and the first frames 411 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 42 and the two first frames 411.

[0127] like Fig.16 As shown, in some embodiments, bosses 431 are respectively provided at both ends of the vertical frame 43, and the two bosses 431 are respectively installed in the corresponding first plug-in grooves 4111, so that the vertical frame 43 can be moved along the length direction of the first frame 411 by sliding the bosses 431 in the first plug-in grooves 4111.

[0128] In this embodiment, the first plug-in groove 4111 on the first frame 411 can not only realize the fixed limitation of the transparent plate 42, but also realize the sliding cooperation with the boss 431. In this way, there is no need to add an additional sliding groove on the first frame 411 for sliding cooperation with the boss 431, which facilitates the simplification of the structure and reduces the structural cost and assembly cost.

[0129] Please refer to Fig.12 and Fig.13In some embodiments, the window door panel structure 40 further includes a sealing strip 44. An installation cavity 4113 is opened on the outer side of the frame 41. The length direction of the installation cavity 4113 is parallel to the length direction of the window door panel structure 40. The sealing strip 44 is arranged in the installation cavity 4113 and is sealed against the adjacent door panel 10.

[0130] In the adjacent door panels 10 and the window door panel structure 40, an installation cavity 4113 can be opened on the first frame 411, and the sealing strip 44 is inserted into the installation cavity 4113 and abuts against the adjacent door panel 10, thereby sealing the gap between the adjacent door panels 10 and the window door panel structure 40 and ensuring the sealing performance of the lifting door 100.

[0131] In addition, two adjacent door panels 10 and two adjacent window door panel structures 40 may also be sealed by a sealing strip 44 .

[0132] It should be noted that those skilled in the art should be aware that in the above embodiment, the two first frames 411 may be different in structure, and the two second frames 412 may be different in structure, and it is only necessary to fix the transparent plate 42 through the two first frames 411 and the two second frames 412.

[0133] It is understandable that the installation cavity 4113 may be provided in only one of the first frames 411 , and the other first frame 411 does not need to provide the installation cavity 4113 .

[0134] See also Figures 17 to 20 In some embodiments, the wheel assembly 12 includes an axle 120 and a rubber wheel 121 sleeved on the axle 120, the rubber wheel 121 includes a wheel frame 122 and a rubber sleeve 123, the wheel frame 122 is provided with a limited hole 1220, the limited hole 1220 passes through the two end surfaces 1226 of the wheel frame 122, the rubber sleeve 123 is arranged on the outer periphery of the wheel frame 122, and the rubber sleeve 123 includes a rubber ring 1230, a first rubber edge 1231, a second rubber edge 1232 and a connecting portion 1233, the rubber ring 1230 is bonded to the outer side surface of the wheel frame 122, the first rubber edge 1231 and the second rubber edge 1232 are respectively connected to the two ends of the rubber ring 1230, and the first rubber edge 1231 and the second rubber edge 1232 are respectively bonded to the two end faces 1226 of the wheel frame 122, the connecting part 1233 is passed through the limiting hole 1220, and the two ends of the connecting part 1233 are respectively connected to the first rubber edge 1231 and the second rubber edge 1232.

[0135] The rubber wheel 121 includes a wheel frame 122 and a rubber sleeve 123, and the rubber sleeve 123 is wrapped around the outer periphery of the wheel frame 122. Optionally, the rubber sleeve 123 is thermoplastically molded on the wheel frame 122 so that the rubber sleeve 123 and the wheel frame 122 are integrally molded. After integral injection molding, the rubber ring 1230 is bonded to the outer side surface of the wheel frame 122, and the first rubber edge 1231 and the second rubber edge 1232 are annular structures. The first rubber edge 1231 and the second rubber edge 1232 are respectively bonded to the end faces 1226 of the wheel frame 122, and the connecting part 1233 passes through the limiting hole 1220 and is bonded to the hole wall of the limiting hole 1220.

[0136] In this embodiment, limiting holes 1220 and connecting parts 1233 that cooperate with each other are set on the wheel frame 122 and the rubber sleeve 123, and the two ends of the connecting part 1233 are respectively connected to the first rubber edge 1231 and the second rubber edge 1232, so that the rubber sleeve 123 is locked on the wheel frame 122, thereby improving the bonding strength of the rubber sleeve 123 on the wheel frame 122, reducing the risk of debonding of the first rubber edge 1231 and the second rubber edge 1232, avoiding the loosening or rubber leakage of the rubber wheel 121, and improving the service life of the rubber wheel 121.

[0137] Optionally, a plurality of limiting holes 1220 are provided, and the plurality of limiting holes 1220 are spaced apart along the circumferential direction of the wheel frame 122. Correspondingly, a plurality of connecting parts 1233 are also provided, and the plurality of connecting parts 1233 correspond one to one with the plurality of limiting holes 1220. Through the limiting cooperation between the plurality of limiting holes 1220 and the plurality of connecting parts 1233, the rubber sleeve 123 is more firmly locked on the wheel frame 122, thereby ensuring that the rubber sleeve 123 does not loosen or leak.

[0138] Optionally, the wheel frame 122 is usually made of a high-strength metal material to improve the structural strength of the rubber wheel 121. For example, the wheel frame 122 can be made of steel, aluminum alloy, etc. The rubber sleeve 123 is usually made of a plastic material with good wear resistance to increase its service life. For example, the rubber sleeve 123 can be made of polyurethane (PU) material.

[0139] In some embodiments, the cross-section of the limiting hole 1220 includes a narrowing section, and the width of the narrowing section gradually decreases from the center of the wheel bone 122 to the edge direction X thereof.

[0140] Specifically, the cross section of the limiting hole 1220 refers to the cross section of the limiting hole 1220 along the axial direction perpendicular to the wheel frame 122. From the center of the wheel frame 122 to its edge direction X, the width of the narrowing section gradually decreases, limiting the movement of the connecting portion 1233 along the X direction, improving the radial force stability of the rubber wheel 121, and making the rubber lagging more firm and reliable.

[0141] Alternatively, if Fig. 20As shown, the limiting hole 1220 includes a first side wall 1227 and a second side wall 1228 that are oppositely arranged, and the narrowed section is located between the first side wall 1227 and the second side wall 1228 .

[0142] In some embodiments, the cross section of the limiting hole 1220 also includes a first connecting section.

[0143] Optionally, the first connecting section can be connected to one end of the narrowing section close to the edge of the wheel bone 122, and the width of the first connecting section can gradually increase in the direction X from the center of the wheel bone 122 to its edge, so that the cross-section of the limiting hole 1220 first changes from wide to narrow, and then from narrow to wide.

[0144] Optionally, the first connecting section can also be connected to one end of the narrowing section close to the center of the wheel bone 122, and the width of the first connecting section gradually increases from the center of the wheel bone 122 to its edge direction X, so that the cross-section of the limiting hole 1220 first changes from narrow to wide, and then from wide to narrow.

[0145] In some embodiments, the cross-section of the limiting hole 1220 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 122 to its edge direction X, so that the cross-section of the limiting hole 1220 first changes from narrow to wide, then from wide to narrow, and then from narrow to wide.

[0146] 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 1220 can be a regular or irregular shape, for example, the cross-section of the limiting hole 1220 is a straight line or an arc shape, etc.

[0147] like Fig.21 As shown, in some embodiments, the narrowing section includes a first hole wall 1221 and a second hole wall 1222 that are arranged opposite to each other, and the first hole wall 1221 and the second hole wall 1222 gradually incline toward the inner side of the narrowing section from the center of the wheel bone 122 to its edge direction X.

[0148] The cross-section of the narrowing section is roughly trapezoidal in structure, and the narrowing section has a first hole wall 1221 and a second hole wall 1222 that are relatively arranged. The first hole wall 1221 and the second hole wall 1222 are both inclined surfaces. The first hole wall 1221 and the second hole wall 1222 present an inner eight structure, along the radial direction of the rubber wheel 121, and from the center of the wheel frame 122 to its edge direction X, the first hole wall 1221 and the second hole wall 1222 gradually incline toward the inner side of the narrowing section, so that the distance between the first hole wall 1221 and the second hole wall 1222 gradually decreases, thereby limiting the movement of the connecting portion 1233 along the X direction, ensuring the bonding strength of the rubber sleeve 123 on the wheel frame 122, and ensuring that the rubber sleeve 123 does not debond or run.

[0149] 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 a circular hole or a square hole.

[0150] like Fig.21 and Fig. 22 As shown, in some embodiments, the end faces 1226 at both ends of the wheel frame 122 are respectively provided with limiting grooves 1223, optionally, the limiting grooves 1223 are annular grooves, and the rubber sleeve 123 also includes a first rib 1234 and a second rib 1235, the first rib 1234 and the second rib 1235 are respectively connected to the first rubber edge 1231 and the second rubber edge 1232, and the first rib 1234 and the second rib 1235 are respectively arranged in the corresponding limiting grooves 1223.

[0151] The first guard side 1234 and the second guard side 1235 are respectively connected to the inner edges of the first glue edge 1231 and the second glue edge 1232, and the end faces 1226 at both ends of the wheel frame 122 are respectively provided with limiting grooves 1223 that cooperate with the first guard side 1234 and the second guard side 1235. By setting the first guard side 1234 and the second guard side 1235 in the corresponding limiting grooves 1223 respectively, the risk of debonding of the first glue edge 1231 and the second glue edge 1232 is further reduced, and the reliability of the glue encapsulation is enhanced.

[0152] like Fig.21 and Fig. 22 As shown, in some embodiments, the wheel frame 122 includes a frame 1224 and a convex ring 1225 convexly provided on the outer wall of the frame 1224, the rubber sleeve 123 is provided on the outer periphery of the convex ring 1225, the inner surface of the first rubber edge 1231 and the inner surface of the second rubber edge 1232 are respectively bonded to the two end faces 1226 of the convex ring 1225, and the limiting hole 1220 is opened on the inner periphery of the convex ring 1225 and passes through the two end faces of the convex ring 1225.

[0153] The wheel frame 122 includes a frame 1224 and a convex ring 1225. The frame 1224 is a hollow cylindrical structure. The convex ring 1225 is convexly arranged on the outer side of the frame 1224. Optionally, the frame 1224 and the convex ring 1225 are integrally formed. The rubber ring 1230 is bonded to the outer side of the convex ring 1225. The first rubber edge 1231 and the second rubber edge 1232 are respectively bonded to the end faces 1226 of the convex ring 1225, so that the rubber sleeve 123 is wrapped around the outer periphery of the convex ring 1225.

[0154] In some embodiments, the inner edge of the first adhesive edge 1231 and the inner edge of the second adhesive edge 1232 are respectively bonded to the frame 1224 .

[0155] like Fig. 22 As shown, the convex ring 1225 is arranged on the outer side surface of the skeleton 1224 and is located between the end surfaces 1226 of the skeleton 1224. The inner edge of the first glue edge 1231 is the side surface of the first glue edge 1231 facing the skeleton 1224, and the inner edge of the second glue edge 1232 is the side surface of the second glue edge 1232 facing the skeleton 1224. The inner edge of the first glue edge 1231 and the inner edge of the second glue edge 1232 are respectively bonded to the outer side surface of the skeleton 1224, which can further avoid debonding at the inner edges of the first glue edge 1231 and the second glue edge 1232.

[0156] Please refer to Fig.17 In some embodiments, the wheel assembly 12 also includes a first bearing 124, which is disposed between the wheel axle 120 and the wheel frame 122. The setting of the first bearing 124 is beneficial to increasing the structural strength of the wheel assembly 12 and reducing the friction between the wheel axle 120 and the wheel frame 122.

[0157] In some embodiments, the first bearing 124 is integrally formed with the wheel frame 122, that is, the first bearing 124, the wheel frame 122 and the rubber sleeve 123 are integrally formed to ensure their structural strength. During the processing and preparation process, the wheel frame 122 can be thermoplastically formed on the first bearing 124 first, and then the rubber sleeve 123 can be thermoplastically formed on the wheel frame 122, so that the first bearing 124, the wheel frame 122 and the rubber sleeve 123 are integrally formed.

[0158] See also Figure 23 to Figure 26 , wherein L1 is the vertical distance between the wheel body 1310 and the limiting plate 513, L2 is the vertical distance between the limiting ring 1312 and the limiting plate 513, L3 is the vertical distance between the wheel body 1310 and the base plate 511, L4 is the vertical distance between the rubber wheel 121 and the base plate 511, and L5 is the vertical distance between the rubber wheel 121 and the limiting plate 513.

[0159] In some embodiments, the lifting door 100 further includes a column 50 (see Figure 8), a guide rail 51 is provided in the column 50, and the rubber wheel 121 of the wheel assembly 12 is provided in the guide rail 51. The sliding of the rubber wheel 121 in the guide rail 51 enables the lifting door 100 to move up and down, thereby forming a door opening and closing action.

[0160] In some embodiments, the guide rail 51 includes a base plate 511, two side plates 512 and two limit plates 513. The two side plates 512 are connected to both sides of the base plate 511. The two limit plates 513 are respectively connected to the side of the two side plates 512 away from the base plate 511, and the limit plates 513 are arranged opposite to the base plate 511. The two limit plates 513 extend inward relative to the two side plates 512. The base plate 511, the two side plates 512 and the two limit plates 513 enclose a guide groove 510. The rubber wheel 121 of the wheel assembly 12 is arranged in the guide groove 510 and rollingly cooperates with the side plates 512.

[0161] The hinge assembly 10 also includes a guide wheel assembly 13, which includes a connecting shaft 130 and a limiting wheel 131 sleeved on the connecting shaft 130. The limiting wheel 131 includes a wheel body 1310, a connecting ring 1311 and a limiting ring 1312 connected in sequence. The wheel body 1310 is arranged in the guide groove 510 and rolls with the side plate 512. The connecting ring 1311 is arranged between two limiting plates 513 and has a clearance fit with the limiting plates 513. The limiting ring 1312 is arranged on the outer side of the guide groove 510. The limiting plate 513 is located between the limiting ring 1312 and the wheel body 1310. The spacing L2 between the limiting ring 1312 and the limiting plate 513 is smaller than the spacing L3 between the wheel body 1310 and the substrate 511, and smaller than the spacing L4 between the rubber wheel 121 and the substrate 511.

[0162] like Fig.23 As shown, two adjacent hinge units 11 can be hinged by the wheel axle 120 or the connecting shaft 130, and the rubber wheel 121 of the wheel assembly 12 is installed in the guide groove 510 of the guide rail 51. The rubber wheel 121 of the wheel assembly 12 slides in the guide groove 510 to make the lifting door 100 move up and down, forming a door opening and closing action.

[0163] When the lifting door 100 tilts, the lifting door 100 drives the guide wheel assembly 13 and the wheel assembly 12 to tilt. Since the distance L2 between the limiting ring 1312 and the limiting plate 513 is smaller than the distance L3 between the wheel body 1310 and the base plate 511, and smaller than the distance L4 between the rubber wheel 121 and the base plate 511, the limiting ring 1312 of the guide wheel assembly 13 contacts the limiting plate 513 first. The limiting cooperation between the limiting plate 513 and the limiting ring 1312 hinders the further tilting of the limiting wheel 131 and the rubber wheel 10, avoids the contact between the wheel body 1310 of the guide wheel assembly 13 and the rubber wheel 121 of the wheel assembly 12 and the base plate 511, reduces the friction between the rubber wheel 121 and the guide rail 51, improves the service life of the wheel assembly 12, and reduces the noise during the operation of the lifting door 100.

[0164] Optionally, the wheel body 1310, the connecting ring 1311 and the limiting ring 1312 are integrally formed to ensure the structural strength of the limiting wheel 131. The wheel body 1310 is a flat cylindrical structure and is arranged in the guide groove 510. The lifting door 100 is lifted and lowered by sliding the wheel body 1310 and the rubber wheel 121 in the guide groove 510. The connecting ring 1311 is located between the two limiting plates 513 and has a certain gap with the two limiting plates 513 respectively, so as to avoid wear and abnormal noise caused by contact between the connecting ring 1311 and the limiting plates 513. The limiting ring 1312 is located outside the guide groove 510, that is, the limiting ring 1312 is located on the side of the limiting plate 513 away from the wheel body 1310. The limiting plate 513 is located between the limiting ring 1312 and the wheel body 1310, and the limiting plate 513 has a gap with the limiting ring 1312 and the wheel body 1310 respectively.

[0165] Optionally, the limiting wheel 131 of the guide wheel assembly 13 is made of a material with good wear resistance to increase its service life, and the rubber wheel 121 of the wheel assembly 12 is made of a relatively quiet soft rubber material to further reduce the noise during the operation of the lifting door 100.

[0166] like Fig.24 , Fig.25 and Fig.26 As shown, in some embodiments, the distance L1 between the wheel body 1310 and the limiting plate 513 is equal to the distance L2 between the limiting ring 1312 and the limiting plate 513 .

[0167] In this embodiment, the wheel body 1310 and the limiting ring 1312 are respectively located on both sides of the limiting plate 513. The distance L1 between the wheel body 1310 and the limiting plate 513 is equal to the distance L2 between the limiting ring 1312 and the limiting plate 513. The distance L1 between the wheel body 1310 and the limiting plate 513 is less than the distance L3 between the wheel body 1310 and the substrate 511, and less than the distance L4 between the rubber wheel 121 and the substrate 511, that is: L1 = L2, L1 < L3 and L1 < L4. When the lifting door 100 tilts, the lifting door 100 drives the limiting wheel 131 and the rubber wheel 121 to tilt. At this time, the wheel body 1310 and the limiting ring 1312 respectively contact the two side surfaces of the limiting plate 513, avoiding the contact between the limiting wheel 131 and the rubber wheel 121 and the substrate 511, and reducing the friction between the limiting wheel 131 and the rubber wheel 121 and the guide rail 51.

[0168] In some embodiments, the distance L1 between the wheel body 1310 and the limiting plate 513 is less than the distance L5 between the rubber wheel 121 and the limiting plate 513.

[0169] As Fig.24 and Fig.25 shown, the distance L1 between the wheel body 1310 and the limiting plate 513 is not only less than the distance L4 between the rubber wheel 121 and the substrate 511, but also less than the distance L5 between the rubber wheel 121 and the limiting plate 513. In this way, when the lifting door 100 tilts, the limiting wheel 131 contacts the limiting plate 513, not only avoiding the contact between the rubber wheel 121 and the substrate 511, but also avoiding the contact between the rubber wheel 121 and the limiting plate 513. Neither side end face of the rubber wheel 121 will contact the guide rail 51, further reducing the friction between the rubber wheel 121 and the guide rail 51, reducing the noise during the operation of the lifting door 100, and reducing the wear of the rubber wheel 121, improving the service life of the wheel assembly 12.

[0170] In specific applications, the lifting door 100 can use a smaller number of guide wheel assemblies 13 and a larger number of wheel assemblies 12. The limiting wheel 131 of the guide wheel assembly 13 is in limiting cooperation with the limiting plate 513 to limit the contact between the rubber wheel 121 of the wheel assembly 12 and the guide rail 51. Since neither side end face of the rubber wheel 121 will contact the guide rail 51, the noise during the operation of the lifting door 100 can be greatly reduced.

[0171] As Fig.26 shown, in some embodiments, the guide wheel assembly 13 further includes a second bearing 132. The second bearing 132 is provided between the connecting shaft 130 and the limiting wheel 131, and the second bearing 132 is integrally formed with the limiting wheel 131.

[0172] The second bearing 132 is sleeved on the connecting shaft 130 , and the limiting wheel 131 is sleeved on the outer periphery of the second bearing 132 . The second bearing 132 is provided to help improve the overall structural strength of the guide wheel assembly 13 and reduce the friction between the connecting shaft 130 and the limiting wheel 131 .

[0173] The second bearing 132 and the limiting wheel 131 are integrally injection molded. The limiting wheel 131 can be made of a plastic material with good wear resistance. During the injection molding process, the limiting wheel 131 is hot-melted and wrapped around the outer periphery of the second bearing 132 to ensure the reliability of the connection between the limiting wheel 131 and the second bearing 132, and to avoid the limiting wheel 131 from loosening or degumming during use.

[0174] Optionally, there are multiple second bearings 132 to increase the structural strength of the guide wheel assembly 13 . In addition, the second bearing 132 and the limiting wheel 131 can also be designed to be separated.

[0175] In some embodiments, the guide wheel assembly 13 further includes a support pad 133 , the limiting wheel 131 has an annular groove, the support pad 133 is disposed in the annular groove, and the support pad 133 , the limiting wheel 131 and the second bearing 132 are integrally formed.

[0176] like Fig.26 As shown, an annular groove is provided on the inner surface of the limiting wheel 131, and a support pad 133 is arranged in the annular groove. The support pad 133, the second bearing 132 and the limiting wheel 131 are integrally formed. During the processing and molding process, the support pad 133 supports the limiting wheel 131 to prevent the limiting wheel 131 from shrinking and deforming during the injection molding process, thereby ensuring the accuracy of the injection molding size.

[0177] 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: Two groups of hinge assemblies, the two groups of hinge assemblies are arranged opposite to each other, each group of hinge assemblies includes a plurality of hinge units, two adjacent hinge units are hinged, and the hinge unit includes a hinge body and a support plate fixedly connected to the inner side of the hinge body; A plurality of door panels, wherein the plurality of door panels are arranged between two sets of hinge components, and each door panel is located between two hinge units arranged opposite to each other; A plurality of back panels, each of which is plugged into and matched with each of the hinge bodies, each of which is located at two sides of each of the door panels and is limitedly matched with each of the door panels, so as to clamp each of the door panels between the corresponding support plate and the corresponding back panel; The hinge body is provided with a slot, and one end of the back plate facing the hinge body is inserted into the slot. The back plate, the door plate and the support plate are tightly matched to clamp the door plate between the back plate and the support plate.

2. The lifting door according to claim 1, characterized in that: A folded edge is provided at one end of the back plate facing the hinge body, and the folded edge abuts against a side surface of the hinge body facing away from the door panel.

3. The lifting door according to claim 1, characterized in that: The back plate is provided with clamping edges at opposite ends along the width direction of the door plate, and the back plate and the two clamping edges are combined to form a positioning groove. The door plate is provided with a positioning protrusion on one side facing the back plate, and the positioning protrusion is clamped in the positioning groove.

4. The lifting door according to claim 1, characterized in that: It also includes a first fastener and a second fastener, and the back panel, the door panel and the support panel are fastened and matched by the first fastener and the second fastener; A connecting hole is provided on the door panel, and a first mounting hole and a second mounting hole corresponding to the connecting hole are respectively provided on the back panel and the support plate, one end of the first fastener passes through the first mounting hole and is located in the connecting hole, and one end of the second fastener passes through the second mounting hole and is fastened with the first fastener in the connecting hole.

5. The lifting door according to claim 1, characterized in that: Each group of hinge assemblies also includes a plurality of wheel assemblies, and two adjacent hinge units are hingedly connected via the wheel axles of the wheel assemblies.

6. The lifting door according to claim 5, characterized in that: The hinge body includes a first body and a second body, the first body and the second body are riveted and fixed, the first body and the second body are respectively provided with a first sub-groove and a second sub-groove, the first sub-groove and the second sub-groove are connected to form the slot.

7. The lifting door according to claim 6, characterized in that: A connecting hole is provided on the first body, a rivet column is protruded on the second body, the rivet column is passed through the connecting hole, a flange is provided at one end of the rivet column away from the second body, and the flange abuts against a side surface of the first body away from the second body.

8. The lifting door according to claim 6, characterized in that: The first main body is provided with a first hinge plate and a second hinge plate at both ends, and the second main body is provided with a third hinge plate and a fourth hinge plate at both ends. Among the two adjacent hinge units, the second hinge plate and the fourth hinge plate of one hinge unit are located between the first hinge plate and the third hinge plate of the other hinge unit. The first hinge plate, the second hinge plate, the third hinge plate and the fourth hinge plate are respectively provided with a first axial hole, a second axial hole, a third axial hole and a fourth axial hole. The wheel axle of the wheel assembly is passed through the third axial hole, the fourth axial hole, the second axial hole and the first axial hole.

9. The lifting door according to claim 5, characterized in that: It also includes a column, a guide rail is arranged in the column, the wheel assembly includes a wheel axle and a rubber wheel sleeved on the wheel axle, and the rubber wheel of the wheel assembly is arranged in the guide rail.

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