Elevator multi-folding door system, door opening and closing control method and goods elevator

Abstract

The invention relates to an elevator multi-folding door system, a door opening and closing control method and a goods elevator, the elevator multi-folding door system comprises a door head frame and a door hanging plate unit, the door head frame is provided with multiple sections of guide rails distributed at intervals in the thickness direction of the door head frame, and the guide rails comprise a first guide rail and a second guide rail; the door hanging plate unit comprises a first door hanging plate and a second door hanging plate, the first door hanging plate is slidably connected to the first guide rail, and the second door hanging plate is slidably connected to the second guide rail; and in the sliding direction of the first door hanging plate, position interference is formed between the second door hanging plate and the first door hanging plate, and the second door hanging plate is configured to synchronously slide on the second guide rail in response to pushing of the first door hanging plate. Therefore, not only can the assembly space required when the door hanging plate unit is assembled in the door head frame be reduced, the realization of the miniaturization design of the whole volume of the door head frame is facilitated, but also the internal structure of the door head frame can be simplified, so that the reduction of the whole processing, assembling and manufacturing cost of the elevator multi-folding door system is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of elevator-related technology, and in particular relates to an elevator multi-folding door system, a door opening and closing control method, and a freight elevator. Background Technology

[0002] Multi-fold door systems for elevators are primarily used in applications requiring wider door panels, especially in the freight elevator sector. In recent years, with the rapid growth in demand for logistics warehousing and large-scale cargo transportation, the market size of freight elevators has continued to expand. Against this backdrop, the simplification of the structure and the miniaturization of multi-fold door systems in freight elevators have become key factors in industry technological competition.

[0003] Currently, existing multi-folding door systems in elevators, such as the "side-opening door operator" proposed in patent publication number CN208577329U, typically have the sliding paths of the fast and slow door plates not in the same vertical plane. A linkage mechanism is installed on the slow door plate to drive it to move at 0.5 times the speed of the fast door plate, using a rope pulley linkage mechanism to achieve linkage between the slow and fast door plates. However, because the fast and slow door plates require a rope pulley linkage mechanism for linkage, the assembly of this mechanism needs to reserve sufficient installation space within the elevator door frame, especially occupying a significant amount of space in the height direction of the door frame. This directly restricts the miniaturization design of the overall door frame size. Furthermore, the additional rope pulley linkage mechanism needs to be manufactured separately, increasing equipment costs. Furthermore, with the increasing demand for wider door panels in freight elevators, the widespread application of three-fold, four-fold, and six-fold door systems, and the increasing number of door panels, traditional double-fold door systems require multiple sets of rope pulley linkage mechanisms to link adjacent door panels. This significantly increases the complexity of the internal structure of the door frame, resulting in redundant and cumbersome components in the overall door operator structure. Consequently, it places higher demands on the strength of the door frame components. Specifically, insufficient strength of the mounting components on the door frame can easily lead to wire rope derailment in the rope pulley linkage mechanism, affecting the stability of the multi-fold door system. Therefore, the linkage mechanism between the fast and slow door panels in traditional double-fold door systems used in passenger elevators is not suitable for multi-fold door systems used in freight elevators. Summary of the Invention

[0004] In view of this, it is necessary to provide an elevator multi-folding door system, a door opening and closing control method, and a freight elevator. The system achieves linkage between the two by directly pushing the first door plate against the second door plate, thereby realizing the opening and closing actions. This can reduce the overall size of the elevator multi-folding door system, improve the operational stability of the multi-folding door system, and reduce production and manufacturing costs.

[0005] An elevator multi-folding door system, the elevator multi-folding door system comprising:

[0006] A door frame, wherein the door frame is provided with multiple guide rails spaced apart along its thickness direction, the guide rails including a first guide rail and a second guide rail;

[0007] A door mounting plate unit, the door mounting plate unit including a first door mounting plate and a second door mounting plate, the first door mounting plate being slidably connected to the first guide rail, and the second door mounting plate being slidably connected to the second guide rail;

[0008] Wherein, along the sliding direction of the first door hanging plate, the second door hanging plate forms a positional interference with the first door hanging plate, and the second door hanging plate is configured to slide synchronously on the second guide rail in response to the pushing of the first door hanging plate.

[0009] It is understandable that the linkage between the two doors is achieved by directly pushing the first door panel against the second door panel. Therefore, there is no need to add an additional dedicated rope pulley linkage mechanism between the first and second door panels. This not only reduces the assembly space required for the door panel unit to be assembled in the door frame, which helps to achieve the miniaturization of the overall size of the door frame, but also simplifies the internal structure of the door frame. This helps to reduce the overall processing, assembly and manufacturing cost of the elevator multi-fold door system, while improving the stability of the multi-fold door system and reducing the failure rate.

[0010] In one embodiment, the push-top linkage mechanism includes an opening impact component and a closing impact component;

[0011] The door opening impact assembly includes a door opening impact part and a door opening impact frame. The door opening impact part is disposed on the first door hanging plate, and the door opening impact frame is disposed on the second door hanging plate. The door opening impact part can impact the door opening impact frame under the drive of the first door hanging plate, so that the first door hanging plate pushes against the second door hanging plate to perform the door opening action.

[0012] The door closing impact assembly includes a door closing impact bracket and a door closing impact frame. The door closing impact bracket is disposed on the first door hanging plate and the door closing impact frame is disposed on the second door hanging plate. The door closing impact bracket can impact the door closing impact frame under the drive of the first door hanging plate, so that the second door hanging plate pushes against the second door hanging plate to perform a door closing action.

[0013] It is understandable that the door opening impact unit and the first door hanging plate can be integrally set, or a part of the structure of the first door hanging plate can directly serve as the door opening impact unit, or the door opening impact unit can be an independent component that forms a detachable connection with the first door hanging plate; the door opening impact frame and the second door hanging plate can also be integrally set, or a part of the structure of the second door hanging plate can directly serve as the door opening impact frame, or the door opening impact frame can be a separate independent component that forms a detachable connection with the second door hanging plate; the structural setting of the door closing impact assembly can refer to the structural setting of the door opening impact assembly, and will not be repeated here; during the opening and closing processes, the first door hanging plate drives the door, and the impact pushes the second door hanging plate to form a linkage.

[0014] In one embodiment, the door opening impact bracket and the door closing impact bracket are installed at both ends of the second door hanging plate; the door opening impact bracket and the door closing impact bracket are installed at both ends of the second door hanging plate and are arranged in a staggered manner, the door opening impact bracket is located on the side of the second door hanging plate facing the door opening position, and the door closing impact bracket is located on the side of the second door hanging plate facing the door closing position.

[0015] Understandably, the above-mentioned structural arrangement allows the first door panel to push the second door panel in a stacked manner. The staggered arrangement of the opening and closing impact frames can prevent the first door panel from interfering with each other on different sliding paths during the opening and closing processes. This also facilitates integrated design, thus meeting the telescopic opening and closing action requirements of the elevator multi-folding door system while also promoting the miniaturization of the elevator multi-folding door system.

[0016] In one embodiment, the push-top linkage mechanism further includes a buffer assembly, which is installed on the door opening impact part and / or the door closing impact frame on its reciprocating extension path to absorb the impact force generated when the door opening impact part and / or the door closing impact frame impacts the corresponding door opening impact frame or the door closing impact frame.

[0017] When the buffer assembly is disposed on the door opening impact part in its back-and-forth movement path, the buffer assembly is installed on the door opening impact frame or the door opening impact part.

[0018] When the buffer assembly is positioned on the door closing impact frame in its reciprocating movement path, the buffer assembly is mounted on the door closing impact frame or the door closing impact frame.

[0019] It is understandable that by using a buffer assembly to cushion the process of the first door panel pushing against the second door panel, the elasticity of the buffer assembly can absorb the impact vibration between the first and second door panels when they collide, thereby improving the smoothness of movement and noise reduction when the second door panel moves in conjunction with the first door panel. Furthermore, when the buffer assembly is installed on the door opening sliding path, it is installed on the door opening impact part of the first door panel or the door opening impact bracket of the second door panel; when the buffer assembly is installed on the door closing sliding path, it is installed on the door closing impact bracket of the first or second door panel. There are various installation positions for the buffer assembly, which can be adjusted according to the actual application scenario.

[0020] In one embodiment, the buffer assembly includes a mounting bracket, an impact rod, and an elastic element, wherein the impact rod is telescopically mounted on the mounting bracket, and the impact rod has an impact head at one end extending out of the mounting bracket; wherein the mounting bracket is mounted on the first door panel and / or the second door panel;

[0021] The elastic element is fitted onto the impact rod and abuts against the impact head and the mounting bracket respectively, for elastically supporting the impact head.

[0022] It is understandable that by using the impact head on the impact rod to compress the elastic element when subjected to force, the buffer assembly can effectively achieve buffering and noise reduction when the first door panel pushes against the second door panel after being subjected to force. At the same time, the buffer assembly is designed as an integral unit with the mounting bracket as the mounting base, making the overall structure of the buffer assembly compact, easy to assemble, and flexibly installed on the first or second door panel.

[0023] In one embodiment, the buffer assembly includes a fastener having a hollow cavity through which the impact rod passes, the impact rod being telescopically mounted to the mounting bracket via the fastener, the fastener being adjustablely fitted onto the mounting bracket.

[0024] In one embodiment, the fastener includes a screw having external threads, and the fastener can be screwed onto the mounting bracket via the external threads;

[0025] The screw has a limiting head at one end that passes through the mounting bracket, and the mounting bracket can abut against the end of the elastic member away from the impact head through the limiting head.

[0026] Understandably, the fastener is screwed to the mounting bracket via its external thread, and a limiting head is provided on the fastener to abut and support the end of the elastic element away from the impact head. This not only facilitates the assembly of the fastener to the mounting bracket and allows its position to be adjusted on the mounting bracket, but also enables reliable limiting of the elastic element to prevent its displacement or loosening, thereby ensuring the stability and consistency of the buffer assembly during long-term use.

[0027] In one embodiment, the door frame is provided with a first limiting member, which is located on one side of the sliding path of the second door panel and can abut against the second door panel to limit the travel of the sliding of the second door panel when it opens.

[0028] And / or, the door frame is provided with a second limiting member, which is located on the other side of the sliding path of the second door hanging plate and can abut against the second door hanging plate, for limiting the travel of the sliding of the second door hanging plate when it closes.

[0029] It is understandable that by having the first and / or second limiting members set on the door frame abut against the second door hanging plate, the consistency of the second door hanging plate sliding on the second guide rail can be ensured. This allows the second door hanging plate to be accurately positioned during the opening and / or closing actions, thus meeting the usage requirements of the elevator multi-folding door system for opening and closing operations.

[0030] This application also provides a door opening and closing control method, applied to the above-described elevator multi-folding door system, the door opening and closing control method comprising the following steps:

[0031] Control the first door panel to slide on the first guide rail until the first door panel touches the second door panel;

[0032] Control the first and second door panels to slide synchronously.

[0033] In one embodiment, the door opening and closing control method further includes the step of:

[0034] First, stop the second door panel from sliding, then stop the first door panel from sliding.

[0035] Understandably, by controlling the first door plate to continue moving a predetermined distance after the second door plate stops sliding, it is possible to ensure that both the first and second door plates can accurately reach their respective open or closed positions, thereby achieving reliable positioning of the entire elevator multi-folding door system when opening and closing the doors.

[0036] This application also provides a freight elevator, including the aforementioned multi-folding door elevator system.

[0037] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0038] The elevator multi-folding door system, door opening and closing control method, and freight elevator claimed in this application achieve linkage between the two by directly pushing the first door hanging plate against the second door hanging plate. Therefore, there is no need to add an additional dedicated rope pulley linkage mechanism between the first and second door hanging plates. This not only reduces the assembly space required when assembling the door hanging plate unit in the door frame, which helps to achieve a miniaturized design of the overall size of the door frame, but also simplifies the internal structure of the door frame, thereby helping to reduce the overall processing, assembly, and manufacturing costs of the elevator multi-folding door system. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a partial structural diagram of the elevator multi-folding door system provided in this application.

[0041] Figure 2 This is a structural diagram showing the moment when the first door panel and the second door panel collide during the opening of the multi-folding door system provided in this application.

[0042] Figure 3 This is a structural diagram of the elevator multi-folding door system provided in this application when the door is fully opened, wherein the second door hanging plate is abutted and limited by the first limiting member.

[0043] Figure 4 for Figure 3 Enlarged view of section A.

[0044] Figure 5 This is a structural diagram showing the moment when the first door hanger plate collides with the second door hanger plate during the closing of the multi-folding door system provided in this application.

[0045] Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0046] Figure 7 This is a structural diagram of the elevator multi-folding door system provided in this application when the door is closed, wherein the second door hanging plate is abutted and limited by the second limiting member.

[0047] Figure 8 for Figure 7 Enlarged view of section C.

[0048] Figure 9 This is a partial structural diagram of the impact head of the door opening impact frame / door closing impact frame in this application when it is not under pressure.

[0049] Figure 10 This is a partial structural diagram of the impact head of the door opening impact frame / door closing impact frame under pressure in this application.

[0050] Figure 11 The control flowchart is for the door opening and closing control method provided in this application.

[0051] Reference numerals: 100, Elevator multi-fold door system; 10, Door head frame; 11, First guide rail; 12, Second guide rail; 20, Door hanging plate unit; 210, Steel wire rope; 21, First door hanging plate; 22, Second door hanging plate; 221, Door closing impact part; 23, Door opening impact bracket; 24, Door closing impact bracket; 25, Buffer assembly; 251, Elastic element; 201, Mounting bracket; 2011, Screw; 202, Impact rod; 203, Fixing element; 2031, External thread; 2032, Limiting head; 204, Impact head; 31, First limiting element; 311, First screw; 32, Second limiting element; 321, Second screw. Detailed Implementation

[0052] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0053] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0057] The multi-fold door system 100 claimed in this application is applied to a freight elevator (not shown) with a relatively wide door panel (not shown) to realize the opening and closing control of the freight elevator. Of course, it is not limited to this. Those skilled in the art can also apply the multi-fold door system to a passenger elevator with a relatively wide door panel. The opening and closing control logic of the passenger elevator is the same as that of the freight elevator, and will not be elaborated here.

[0058] like Figures 1 to 10 As shown, the elevator multi-fold door system 100 provided in this application includes a door frame 10 and a door hanging plate unit 20. The door frame 10 is provided with multiple guide rails spaced apart along its thickness direction, including a first guide rail 11 and a second guide rail 12. The door hanging plate unit 20 includes a first door hanging plate 21 and a second door hanging plate 22. The first door hanging plate 21 is slidably connected to the first guide rail 11, and the second door hanging plate 22 is slidably connected to the second guide rail 12. In the sliding direction of the first door hanging plate 21, the second door hanging plate 22 forms a positional interference with the first door hanging plate 21, and the second door hanging plate 22 is configured to slide synchronously on the second guide rail 12 in response to the pushing of the first door hanging plate 21.

[0059] Here, both the first door mounting plate 21 and the second door mounting plate 22 are connected to a door panel (not shown in the figure) at the bottom, so that when they slide, they can synchronously drive the door panel below to move, thereby realizing the opening and closing function of the elevator. It should be noted that the specific structure and control logic of the freight elevator driving the first door mounting plate 21 to slide along the first guide rail 11 can adopt mature solutions commonly used in existing elevators, and will not be elaborated here.

[0060] As can be seen from the above, the elevator multi-fold door system 100 of this application achieves linkage between the two by directly pushing the second door hanging plate 22 with the first door hanging plate 21. Therefore, there is no need to add an additional dedicated rope pulley linkage mechanism between the first door hanging plate 21 and the second door hanging plate 22. This not only reduces the assembly space required when assembling the door hanging plate unit 20 in the door frame 10, which helps to achieve the miniaturization of the overall volume of the door frame 10, but also simplifies the internal structure of the door frame 10. This helps to reduce the overall processing, assembly and manufacturing cost of the elevator multi-fold door system 100, while improving the stability of the multi-fold door system operation and reducing the failure rate.

[0061] In this application, the multi-folding elevator door system 100 includes two sets of door hanging plate units 20, which are symmetrically arranged on both sides of the length direction of the door frame 10. To ensure synchronous movement of the two sets of door hanging plate units 20, the two first door hanging plates 21 in the two sets of door hanging plate units 20 are connected by steel wire ropes 210, so that the two sets of door hanging plate units 20 can slide in a coordinated manner on the door frame 10. It should be noted that the number of door hanging plates in each set of door hanging plate units 20 is not limited to the two first door hanging plates 21 and second door hanging plates 22 mentioned above. For those skilled in the art, the number of door hanging plates can also be set to three or more according to actual needs; as long as the movement between adjacent door hanging plates is transmitted by direct pushing, it will not be elaborated here.

[0062] As shown in the figure, in one embodiment, the door hanging plate unit 20 further includes a push-top linkage mechanism, which includes an opening impact component and a closing impact component. That is, the door hanging plate unit 20 can use the opening impact component to realize the first door hanging plate 21 pushing the second door hanging plate 22 to open the door, and use the closing impact component to realize the first door hanging plate 21 pushing the second door hanging plate 22 to close the door.

[0063] The door opening impact assembly includes a door opening impact part and a door opening impact frame 23. The door opening impact part is disposed on the first door hanging plate, and the door closing impact part 221 is disposed on the second door hanging plate. The door closing impact frame can impact the door opening impact frame 23 under the drive of the first door hanging plate 21, so that the first door hanging plate 21 pushes the second door hanging plate 22 to perform the door opening action.

[0064] Here, the door opening impact part is integrated into the first door mounting plate 21, specifically formed by bending the first door mounting plate 21 as a single piece, while the door opening impact bracket 23 is installed on the second door mounting plate 22. Of course, this is not the only option. For those skilled in the art, the door opening impact part can also be installed as an independent unit fixedly on the first door mounting plate 21, or the door opening impact bracket 23 can be installed on the first door mounting plate 21, in which case the door opening impact part is installed on the second door mounting plate 22. This will not be elaborated further here.

[0065] The door closing impact assembly includes a door closing impact bracket 24 and a door closing impact part 221. The door closing impact bracket 24 is disposed on the first door hanging plate 21, and the door closing impact part 221 is disposed on the second door hanging plate 22. The door closing impact bracket 24 can impact the door closing impact part 221 under the drive of the first door hanging plate 21, so that the first door hanging plate 21 pushes the second door hanging plate 22 to perform the door closing action.

[0066] The door opening impact part and the first door hanging plate 21 can be integrally set together. A part of the structure of the first door hanging plate 21 can directly serve as the door opening impact part, or the door opening impact part can be an independently set component, forming a detachable connection with the first door hanging plate 21. The door opening impact frame and the second door hanging plate 22 can also be integrally set together. A part of the structure of the second door hanging plate 22 can directly serve as the door opening impact frame, or the door opening impact frame can be a separate independently set component, forming a detachable connection with the second door hanging plate 22. The structural setting of the door closing impact assembly can refer to the structural setting of the door opening impact assembly, and will not be described again. During the opening and closing processes, the first door hanging plate 21 drives the door, and the impact pushes the second door hanging plate 22 to form a linkage.

[0067] Here, the door closing impact bracket 24 is mounted on the first door hanging plate 21, and the door closing impact part 221 is mounted on the second door hanging plate 22. Of course, it is not limited to this. Those skilled in the art can also mount the door closing impact bracket on the second door hanging plate 22 and the door closing impact bracket on the first door hanging plate 21.

[0068] In this embodiment, the door closing impact bracket 24 is located below the first door hanging plate 21 in the height direction of the door frame 10, and correspondingly, the door closing impact part 221 is located below the door opening impact bracket 23 in the height direction of the door frame 10.

[0069] As shown in the figure, the door opening impact bracket 23 and the door closing impact part 221 are installed at both ends of the second door mounting plate 22. The door opening impact bracket 23 and the door closing impact part 221 are installed at both ends of the second door mounting plate 22 and are arranged in a staggered manner. The door opening impact bracket 23 is located on the side of the second door mounting plate 22 facing the door opening position, and the door closing impact part 221 is located on the side of the second door mounting plate 22 facing the door closing position. When the first door mounting plate 21 pushes the second door mounting plate 22 to perform linkage, the first door mounting plate 21 and the second door mounting plate 22 are stacked. This can meet the action requirements of the telescopic opening and closing of the elevator multi-fold door system 100, while also being conducive to the miniaturization design of the elevator multi-fold door system. The staggered arrangement of the door opening impact bracket 23 and the door closing impact part 221 can avoid mutual interference on different sliding paths of the first door mounting plate 21 during the door opening and closing process, and can also facilitate integrated design.

[0070] Preferably, as shown in the figure, the push-top linkage mechanism of this embodiment further includes a buffer assembly 25, which is installed on the door opening impact part and / or the door closing impact frame on its back-and-forth extension path to absorb the impact force generated when the door opening impact part and / or the door closing impact frame hits the corresponding door opening impact frame or door closing impact frame.

[0071] When the buffer assembly 25 is disposed on the path of the door opening impact part in its back-and-forth movement, the buffer assembly 25 is installed on the door opening impact bracket 23 or the door opening impact part.

[0072] When the buffer assembly 25 is positioned on the door closing impact bracket along its reciprocating path, the buffer assembly 25 is mounted on the door closing impact portion 221 or the door closing impact bracket. Preferably, when the door is opened, the buffer assembly is mounted on the door opening impact bracket 23, and when the door is closed, the buffer assembly 25 is mounted on the door closing impact bracket. This embodiment enables the push-pull linkage mechanism to buffer the process of the first door panel 21 pushing the second door panel 22 by using the buffer component 25. During this process, the elastic buffer of the buffer component 25 can absorb the impact vibration between the first door panel 21 and the second door panel 22 when they collide, and achieve flexible collision between the first door panel 21 and the second door panel 22, thereby improving the smoothness of movement and noise reduction when the second door panel 22 moves in conjunction with the first door panel 21. Furthermore, when the buffer component 25 is installed on the door opening sliding path, it is installed on the door opening impact part of the first door panel 21 or the door opening impact frame of the second door panel 22; when the buffer component 25 is installed on the door closing sliding path, it is installed on the door closing impact frame of the second door panel 22 or the door closing impact frame of the second door panel 22. There are various installation positions for the buffer component 25, which can be adjusted according to the actual application scenario.

[0073] Specifically, such as Figure 4 , Figure 6 , Figures 8 to 10 As shown, the buffer assembly 25 includes a mounting bracket 201, an impact rod 202, and a fixing member 203. The impact rod 202 is telescopically mounted to the mounting bracket 201 via the fixing member 203, and the impact rod 202 has an impact head 204 at one end extending out of the fixing member 203. The mounting bracket 201 is mounted on either the first door panel 21 or the second door panel 22. Correspondingly, the buffer assembly 25 also includes an elastic member 251, which is fitted onto the impact rod 202 and abuts against both the impact head 204 and the mounting bracket 201, providing elastic support for the impact head 204. This allows the push-pull linkage mechanism to effectively buffer and reduce noise when the first door panel 21 pushes against the second door panel 22 by compressing the elastic member 251 under force.

[0074] Here, the impact head 204 can be configured as a non-metallic elastic element, specifically made of materials such as polyurethane or rubber, and can be screwed onto the impact rod 202. Simultaneously, the matching elastic element 251 can be a compression spring. Of course, this is not the only option; for those skilled in the art, the installation method of the impact head 204 is not limited to this, and other methods such as interference fit or integral molding with the impact rod 202 can also be used. Correspondingly, the elastic element 251 can also be replaced with components that provide elasticity, such as rubber sleeves or bellows. The specific implementation method can be selected according to actual needs, and will not be elaborated upon here.

[0075] The mounting bracket 201 is installed on the first door hanging plate 21 or the second door hanging plate 22, which enables the door opening impact bracket 23 and the door closing impact bracket 24 to be assembled and connected on the first door hanging plate 21 or the second door hanging plate 22. This allows the door opening impact bracket 23 and the door closing impact bracket 24 to be designed as an integral part of the mounting base using the mounting bracket 201. As a result, the door opening impact bracket 23 and the door closing impact bracket 24, together with the buffer assembly 25, have a compact overall structure, are easy to assemble, and can be flexibly installed on the first door hanging plate 21 or the second door hanging plate 22.

[0076] like Figure 4 , Figure 6 , Figures 8 to 10 As shown, the fixing member has a hollow cavity through which the impact rod 202 passes. The impact rod 202 is telescopically mounted on the mounting bracket 201 via the fixing member 203. The fixing member 203 is adjustablely assembled on the mounting bracket 201, thereby achieving the assembly and fixation of the fixing member 203 on the mounting bracket 201. The fixing member includes a screw with an external thread 2031, and the fixing member can be screwed onto the mounting bracket 201 via the external thread 2031. A limiting head 2032 is provided at one end of the fixing member 203 that passes through the mounting bracket 201, and the mounting bracket 201 can abut against the end of the elastic member 251 away from the impact head 204 via the limiting head 2032. This not only facilitates the assembly of the fixing member 203 onto the mounting bracket 201 and allows for position adjustment on the mounting bracket 201, but also reliably limits the elastic member 251, preventing its displacement or loosening, thereby ensuring the stability and consistency of the elastic member 251 during long-term use.

[0077] like Figure 3 , Figure 4As shown, in one embodiment, when the door opening impact bracket 23 is fixedly connected to the second door hanging plate 22 away from the first door hanging plate 21 by its mounting bracket 201, one end of the mounting bracket 201 is attached to the second door hanging plate 22, specifically by two screws 2011 to achieve the connection and fixation between the two and the second door hanging plate 22; the other end of the mounting bracket 201 is used to install and fix the fastener 203.

[0078] like Figure 4 As shown, in this embodiment, the door frame 10 is provided with a first limiting member 31. The first limiting member 31 is located on the side of the second door hanging plate 22 away from the first door hanging plate 21 and can abut against the second door hanging plate 22. It is used to limit the travel of the sliding of the second door hanging plate 22 when the door is opened, so as to ensure that the second door hanging plate 22 can be accurately positioned when the door is opened, thereby ensuring the consistency of the sliding of the second door hanging plate 22 on the second guide rail 12.

[0079] Here, the first limiting member 31 can be a nylon sleeve and fixed to the door frame 10 by a first screw 311 passing through it. It should be noted that the installation position of the first limiting member 31 is below the door opening impact bracket 23 on the second door hanging plate 22 in the height direction of the door frame 10, and its specific arrangement will not be elaborated here.

[0080] like Figure 6 As shown, in this embodiment, the door frame 10 is provided with a second limiting member 32. The second limiting member 32 is located on the side of the second door hanging plate 22 facing the first door hanging plate 21 and can abut against the second door hanging plate 22. It is used to limit the travel of the sliding of the second door hanging plate 22 when the door is closed, so as to ensure that the second door hanging plate 22 can be accurately positioned when the door is closed, thereby ensuring the consistency of the sliding of the second door hanging plate 22 on the second guide rail 12.

[0081] Here, the second limiting member 32 can be made of nylon and fixed to the door frame 10 by a second screw 321 passing through it.

[0082] like Figure 11 As shown, this application also provides a door opening and closing control method, applied to the elevator multi-folding door system 100 described above. The door opening and closing control method includes the following steps:

[0083] Control the first door hanging plate 21 to slide on the first guide rail 11 until the first door hanging plate 21 touches the second door hanging plate 22;

[0084] Control the first door hanging plate 21 and the second door hanging plate 22 to slide synchronously.

[0085] like Figure 11As shown, in one embodiment, the door opening and closing control method further includes the steps of first controlling the second door mounting plate 22 to stop sliding, and then controlling the first door mounting plate 21 to stop sliding. This ensures that both the first door mounting plate 21 and the second door mounting plate 22 can accurately reach their respective open or closed positions, thereby achieving reliable positioning of the entire elevator multi-folding door system 100 during door opening and closing.

[0086] This application also provides a freight elevator, including the elevator multi-folding door system 100 described above.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any appropriate changes and variations made to the above embodiments within the essential spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A multi-folding door system for elevators, characterized in that, The elevator multi-folding door system (100) includes: The door frame (10) is provided with multiple guide rails spaced apart along its thickness direction, the guide rails including a first guide rail (11) and a second guide rail (12). The door mounting plate unit (20) includes a first door mounting plate (21) and a second door mounting plate (22). The first door mounting plate (21) is slidably connected to the first guide rail (11), and the second door mounting plate (22) is slidably connected to the second guide rail (12). Along the sliding direction of the first door hanging plate (21), the second door hanging plate (22) forms a positional interference with the first door hanging plate (21), and the second door hanging plate (22) is configured to slide synchronously on the second guide rail (12) in response to the push of the first door hanging plate (21).

2. The elevator multi-folding door system according to claim 1, characterized in that, The door panel unit (20) also includes a push-top linkage mechanism, which includes an opening impact component and a closing impact component; The door opening impact assembly includes a door opening impact part and a door opening impact frame (23). The door opening impact part is disposed on the first door hanging plate (21), and the door opening impact frame (23) is disposed on the second door hanging plate (22). The door opening impact part can impact the door opening impact frame (23) under the drive of the first door hanging plate (21), so that the first door hanging plate (21) pushes the second door hanging plate (22) to perform the door opening action. The door closing impact assembly includes a door closing impact bracket (24) and a door closing impact part (221). The door closing impact part (221) is disposed on the first door hanging plate (21) and the door closing impact part (221) is disposed on the second door hanging plate (22). The door closing impact bracket (24) can impact the door closing impact part (221) under the drive of the first door hanging plate (21), so that the first door hanging plate (21) pushes the second door hanging plate (22) to perform the door closing action.

3. The elevator multi-folding door system according to claim 2, characterized in that, The door opening impact bracket (23) and the door closing impact part (221) are installed at both ends of the second door hanging plate (22); the door opening impact bracket (23) and the door closing impact part (221) are installed at both ends of the second door hanging plate (22) and are arranged in an up-down staggered manner. The door opening impact bracket (23) is located on the side of the second door hanging plate (22) facing the door opening position, and the door closing impact part (221) is located on the side of the second door hanging plate (22) facing the door closing position.

4. The elevator multi-folding door system according to claim 2, characterized in that, The push-top linkage mechanism also includes a buffer assembly (25), which is installed on the door opening impact part and / or the door closing impact frame on its back-and-forth extension path to absorb the impact force generated when the door opening impact part and / or the door closing impact frame impacts the corresponding door opening impact frame or the door closing impact frame. When the buffer assembly (25) is disposed on the door opening impact part in its back-and-forth movement path, the buffer assembly (25) is installed on the door opening impact frame (23) or the door opening impact part; When the buffer assembly (25) is disposed on the door closing impact bracket in its back-and-forth movement path, the buffer assembly (25) is mounted on the door closing impact part (221) or the door closing impact bracket.

5. The elevator multi-folding door system according to claim 4, characterized in that, The buffer assembly (25) includes a mounting bracket (201), an impact rod (202), and an elastic element (251). The impact rod (202) is telescopically mounted on the mounting bracket (201), and the impact rod (202) has an impact head (204) at one end extending out of the mounting bracket (201). The mounting bracket (201) is mounted on the first door hanging plate (21) and / or the second door hanging plate (22). The elastic element (251) is fitted onto the impact rod (202) and abuts against the impact head (204) and the mounting bracket (201) respectively, for elastically supporting the impact head (204).

6. The elevator multi-folding door system according to claim 5, characterized in that, The buffer assembly (25) includes a fastener (203) having a hollow cavity through which the impact rod (202) passes. The impact rod (202) is telescopically mounted to the mounting bracket (201) via the fastener (203), and the fastener (203) is adjustablely fitted onto the mounting bracket (201).

7. The elevator multi-folding door system according to claim 6, characterized in that, The fastener (203) includes a screw with an external thread (2031), and the fastener (203) can be screwed to the mounting bracket (201) via the external thread (2031). Wherein, a limiting head (2032) is provided at one end of the screw that passes through the mounting bracket (201), and the mounting bracket (201) can abut against the end of the elastic member (251) away from the impact head (204) through the limiting head (2032).

8. The elevator multi-folding door system according to claim 1, characterized in that, The door frame (10) is provided with a first limiting member (31), which is located on one side of the sliding path of the second door hanging plate (22) and can abut against the second door hanging plate (22) to limit the travel of the sliding of the second door hanging plate (22) when it opens; And / or, the door frame (10) is provided with a second limiting member (32), which is located on the other side of the sliding path of the second door hanging plate (22) and can abut against the second door hanging plate (22) to limit the sliding of the second door hanging plate (22) when it closes.

9. A door opening and closing control method, applied to the elevator multi-folding door system (100) according to any one of claims 1 to 8, characterized in that, The door opening and closing control method includes the following steps: Control the first door hanging plate (21) to slide on the first guide rail (11) until the first door hanging plate (21) touches the second door hanging plate (22); Control the first door hanging plate (21) and the second door hanging plate (22) to slide synchronously.

10. The door opening and closing control method according to claim 9, characterized in that, The door opening and closing control method further includes the following steps: First, control the second door panel (22) to stop sliding, then control the first door panel (21) to stop sliding.

11. A freight elevator, characterized in that, The elevator multi-folding door system (100) includes any one of claims 1 to 8.

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