CN223547545U - Cross hanging beam structure - Google Patents
Cross hanging beam structureInfo
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- CN223547545U CN223547545U CN202423035825.5U CN202423035825U CN223547545U CN 223547545 U CN223547545 U CN 223547545U CN 202423035825 U CN202423035825 U CN 202423035825U CN 223547545 U CN223547545 U CN 223547545U
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Abstract
本实用新型提供的一种十字型吊梁结构，包括上梁、下梁和吊装单元，上梁包括上梁本体；下梁包括下梁本体，上梁本体和下梁本体呈十字交叉布置，且上梁本体位于下梁本体的上方并固定连接；吊装单元包括一对第一吊装组件和多个第二吊装组件，一对第一吊装组件分别设于上梁本体的两端，上梁本体和下梁本体上分别设有至少两个第二吊装组件；其中，每个第一吊装组件和每个第二吊装组件均包括水平设置的吊杆。因此本实用新型不仅可以根据需要对上梁和下梁分别设计，以提高独立承担荷载和整体结构的承载能力。还可以通过合理设计上梁、下梁的连接方式改善整体的受力状态，使得结构在承受大荷载时的表现更加优越，适用于车间内的两台行车吊装大型重物。
This utility model provides a cross-shaped lifting beam structure, including an upper beam, a lower beam, and a lifting unit. The upper beam includes an upper beam body; the lower beam includes a lower beam body, and the upper and lower beam bodies are arranged in a cross shape, with the upper beam body located above and fixedly connected to the lower beam body. The lifting unit includes a pair of first lifting components and multiple second lifting components. The pair of first lifting components are respectively located at both ends of the upper beam body, and at least two second lifting components are respectively provided on the upper and lower beam bodies. Each first and second lifting component includes a horizontally arranged lifting rod. Therefore, this utility model can not only design the upper and lower beams separately as needed to improve the independent load-bearing capacity and the overall structural load-bearing capacity, but also improve the overall stress state by rationally designing the connection method of the upper and lower beams, making the structure perform better under large loads. It is suitable for lifting large heavy objects with two overhead cranes in a workshop.
Description
Technical Field
The utility model relates to the technical field of lifting appliances, in particular to a cross-shaped lifting beam structure.
Background
The lifting appliance in the lifting machinery is a unit for lifting heavy objects, the most common lifting appliance is a lifting hook and a lifting belt, other lifting rings, a lifting sucker, a clamp, a fork and the like, and also comprises a cross lifting beam structure, wherein the cross lifting beam structure is an integrated cross structure, the four beam arms are all hinged with lifting arms, and the lifting ring connected with the lifting hook in the lifting machinery is arranged at the central position of the top of the cross lifting beam.
Among them, travelling crane is used as a hoisting machine, in particular in industrial and construction environments. It is mainly used for moving heavy objects in horizontal and vertical directions, and is commonly used in factories, warehouses and construction sites. When some large-size and heavy-weight parts are hoisted in a workshop, the problem of insufficient bearing of a single crane is solved, at the moment, two parallel cranes are needed, hoisting weight can be met only by hoisting, but the current cross-shaped hanging beam structure is provided with a hanging ring used for being connected with hoisting machinery only at the center of the top and is not suitable for the two cranes, and the integral structure enables local stress concentration and bearing capacity of the cross beam to be limited. Therefore, a cross-shaped hanging beam structure is required to be designed, and the cross-shaped hanging beam structure is suitable for hanging large-scale heavy objects in workshops.
Disclosure of utility model
In view of the above-mentioned drawbacks of the prior art, the present utility model aims to provide a cross-shaped hanging beam structure, which can reasonably distribute load by arranging separate upper and lower beam structures and combining with the arrangement of a hanging assembly, and improve the rigidity and stability of the cross-shaped hanging beam structure, so as to be used for hanging large-sized heavy objects by two travelling cranes.
To achieve the above and other related objects, the present utility model provides a cross-shaped hanging beam structure, comprising:
An upper beam comprising an upper beam body;
The lower beam comprises a lower beam body, wherein the upper beam body and the lower beam body are arranged in a crisscross manner, and the upper beam body is positioned above the lower beam body and fixedly connected;
The hoisting unit comprises a pair of first hoisting assemblies and a plurality of second hoisting assemblies, the pair of first hoisting assemblies are respectively arranged at two ends of the upper beam body), and at least two second hoisting assemblies are respectively arranged on the upper beam body and the lower beam body;
Wherein, every first hoist and mount subassembly and every second hoist and mount subassembly all include the jib that the level set up, install the hanger plate subassembly on the jib of every second hoist and mount subassembly.
In an embodiment of the present utility model, each of the first hoisting assemblies includes a pair of first side plates extending along an end of the upper beam body and a first boom horizontally inserted on the pair of first side plates.
In an embodiment of the utility model, a reinforcing plate is attached to two sides of each first side plate, and a first connecting plate is disposed at the lower end of a pair of first side plates.
In an embodiment of the present utility model, each second hoisting assembly includes a second side plate and a second boom, where the second side plate and the side surface of the upper beam body) or the side surface of the lower beam body are correspondingly arranged at intervals, and are fixedly connected with the corresponding side surface through a second connecting plate, and the second boom is horizontally inserted on the second side plate and the corresponding side surface.
In an embodiment of the present utility model, each of the first suspension rod and the second suspension rod is a hanging point pin shaft horizontally arranged, and two sides of an insertion hole of each hanging point pin shaft are correspondingly provided with a pair of anti-rotation baffles.
In an embodiment of the present utility model, a pair of mounting plates are disposed at intervals in the middle of the lower beam body, and the upper beam body) is disposed at the upper end of the lower beam body between the pair of mounting plates, and is connected by a connection pin, and a pair of anti-rotation baffles are disposed at two sides of each connection pin corresponding to the pin insertion hole.
In an embodiment of the utility model, each mounting plate is an inverted U-shaped plate, two sides of the mounting plate are correspondingly clamped on the lower beam body, and the bottom of the mounting plate extends out of the upper end of the lower beam body.
In an embodiment of the utility model, the upper beam body and the lower beam body are hollow plate frame structures, the upper beam body) and the lower beam body are respectively provided with second hoisting components on two corresponding sides of each end part of the upper beam body and the lower beam body, and the two sides of the mounting plate corresponding to each side of the lower beam body are respectively provided with the second hoisting components.
In an embodiment of the present utility model, each hanger plate assembly includes a first hanger plate and a pair of second hanger plates, one end of the first hanger plate is sleeved on the hanger rod, the other end of the first hanger plate is connected to the pair of second hanger plates, and a hanger shaft is inserted between the pair of second hanger plates.
In an embodiment of the present utility model, each hanger plate assembly includes a first hanger plate and a hanging ring, one end of the first hanger plate is sleeved on the hanging rod, and the other end of the first hanger plate is connected with the hanging ring.
The utility model has at least the following beneficial technical effects:
The cross-shaped hanging beam structure is characterized in that a pair of first hanging components are arranged at two ends of an upper beam body, a pair of hanging rods of the pair of first hanging components are respectively connected with hanging hooks of two travelling cranes by using steel wires, the cross-shaped hanging beam structure is suitable for hanging large-scale heavy objects by the two travelling cranes in a workshop, and meanwhile, a split-type upper beam structure and a split-type lower beam structure are adopted, so that the bearing capacity of independently bearing loads and the bearing capacity of an integral structure can be respectively designed and improved for the upper beam structure and the lower beam structure according to requirements. The load transmission path can be effectively adjusted by reasonably designing the connection mode of the upper beam and the lower beam, so that the overall stress state is improved, and the structure is more superior in performance when bearing a large load.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a cross-shaped hanging beam structure according to an embodiment of the utility model.
The upper beam body 10, the lower beam body 20, the mounting plate 21, the connecting pin shaft 22, the first hoisting assembly 31, the first side plate 311, the first suspender 312, the first connecting plate 313, the second hoisting assembly 32, the second side plate 321, the second suspender 322, the second connecting plate 323, the anti-rotation baffle 40, the first suspender 51, the second suspender 52, the suspender shaft 53 and the suspending ring 54.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the illustrations, not according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
Referring to fig. 1, the utility model provides a cross-shaped hanging beam structure, which comprises an upper beam, a lower beam and a hanging unit, wherein the upper beam comprises an upper beam body 10, the lower beam comprises a lower beam body 20, the upper beam body 10 and the lower beam body 20 are arranged in a cross manner, the upper beam body 10 is positioned above the lower beam body 20 and fixedly connected with the lower beam body 20, the hanging unit comprises a pair of first hanging components 31 and a plurality of second hanging components 32, the pair of first hanging components 31 are respectively arranged at two ends of the upper beam body 10, at least two second hanging components 32 are respectively arranged on the upper beam body 10 and the lower beam body 20, each first hanging component 31 and each second hanging component 32 comprise a hanging rod which is horizontally arranged, and a hanging plate component is arranged on the hanging rod of each second hanging component 32.
In use, a pair of booms of a pair of first lifting assemblies 31 are respectively connected with the hooks of two travelling cranes by using steel wire ropes, and the booms of the second lifting assemblies 32 are connected with the weight lifting points by using steel wire ropes. And the second hoist assemblies 32 on the upper beam body 10 and/or the lower beam body 20 may be used as desired. The second hoisting assembly 32 of the upper beam body 10 may be selected when the weight hanging point position is perpendicular to the traveling direction, and the second hoisting assembly 32 of the lower beam body 20 may be selected when the weight hanging point position is parallel to the traveling direction. Therefore, the cross-shaped hanging beam structure can hang weights with the positions of the hanging points of the weights in mutually perpendicular directions. The upper beam body 10 is located above the lower beam body 20 and is fixedly connected, a pair of first hoisting assemblies 31 are arranged at two ends of the upper beam body 10, a pair of hanging rods of the pair of first hoisting assemblies 31 are respectively connected with hanging hooks of two travelling cranes by using steel wires, the upper beam body is suitable for hanging large-scale heavy objects by the two travelling cranes in a workshop, meanwhile, the split type structural design can enable the upper beam and the lower beam to independently bear loads according to load conditions, so that more reasonable stress distribution is realized, local stress concentration phenomenon is effectively reduced, and the bearing capacity of the whole structure is improved.
In an embodiment of the present utility model, each of the first hoist assemblies 31 includes a pair of first side plates 311 and a first suspension rod 312, the pair of first side plates 311 are extended along the end of the upper beam body 10, and the first suspension rod 312 is horizontally inserted on the pair of first side plates 311. Reinforcing plates are attached to two side surfaces of each first side plate 311, and a first connecting plate 313 is arranged at the lower end of a pair of first side plates 311.
It should be noted that, the first side plates 311 and the first connecting plate 313 are respectively integrally formed with the upper beam body 10 or are fixedly connected, the first suspension rod 312 is horizontally inserted into the pair of first side plates 311, the first suspension rod 312 may be a hanging point pin, and two sides of the jack of the hanging point pin are correspondingly provided with a pair of anti-rotation baffles 40, so that the hanging point pin can be prevented from rotating, and the hanging point pin is fixed.
In an embodiment of the present utility model, each second hoisting assembly 32 includes a second side plate 321 and a second boom 322, where the second side plate 321 and a side surface of the upper beam body 10 or a side surface of the lower beam body 20 are correspondingly spaced, and are fixedly connected with the corresponding side surface through a second connecting plate 323, and the second boom 322 is horizontally inserted on the second side plate 321 and the corresponding side surface.
It should be noted that, the second suspension rod 322 may be a hanging point pin, and two sides of the jack of the hanging point pin are correspondingly provided with a pair of anti-rotation baffles 40, so that the hanging point pin is prevented from rotating, and the hanging point pin is fixed.
In an embodiment of the present utility model, a pair of mounting plates 21 are disposed at intervals in the middle of the lower beam body 20, the middle of the upper beam body 10 is disposed at the upper end of the lower beam body 20 between the pair of mounting plates 21 and connected by connecting pins 22, and a pair of anti-rotation baffles 40 are disposed at two sides of each connecting pin 22 corresponding to the pin insertion hole. Each mounting plate 21 is an inverted U-shaped plate, two sides of each mounting plate 21 are correspondingly clamped on the lower beam body 20, and the bottom of each mounting plate 21 extends out of the upper end of the lower beam body 20. At this time, the connecting pins 22 may penetrate through the bottom extending end of the mounting plate 21 and the corresponding upper beam body 10, and the connecting pins 2 are arranged side by side to make the connection more stable, and a pair of anti-rotation baffles 40 are correspondingly arranged on two sides of the corresponding pin insertion hole of each connecting pin 22, so as to prevent the rotation of the connecting pin 2, so that the upper beam body 10 and the lower beam body 20 are fixedly connected.
The upper beam body 10 and the lower beam body 20 are independently designed and connected at the middle part. The split structure can better accommodate load changes by adjusting the designs of the upper beam body 10 and the lower beam body 20, thereby improving the load carrying capacity. The load transmission path can be effectively adjusted, so that the overall stress state is improved, and the structure is more superior in performance when bearing a large load. Meanwhile, the inverted U-shaped plate is used as the mounting plate 21, and a part of stress can be borne.
In an embodiment of the present utility model, the upper beam body 10 and the lower beam body 20 are hollow plate-frame structures, two corresponding sides of each end of the upper beam body 10 and the lower beam body 20 are respectively provided with a second hoisting assembly 32, and two corresponding sides of the mounting plate 21 of each side of the lower beam body 20 are respectively provided with a second hoisting assembly 32.
The number and positions of the second hoisting assemblies 32 mounted on the upper beam body 10 and the lower beam body 20 can be selected as required, and the second hoisting assemblies 32 are symmetrically arranged for evenly bearing force when hoisting the weight. The second hoisting assembly 32 is symmetrically arranged on the upper beam body 10 by taking the lower beam body 20 as a symmetry axis, and the second hoisting assembly 32 is symmetrically arranged on the lower beam body 20 by taking the upper beam body 10 as a symmetry axis. Meanwhile, when the second hoisting assembly 32 is arranged on the side surface of the upper beam body 10 or the lower beam body 20, the second hoisting assembly 32 is selectively arranged on the corresponding two side surfaces.
In an embodiment of the present utility model, each hanger plate assembly includes a first hanger plate 51 and a pair of second hanger plates 52, one end of the first hanger plate 51 is sleeved on the hanger rod, the other end of the first hanger plate 51 is connected to the pair of second hanger plates 52, and a hanger shaft 53 is inserted between the pair of second hanger plates 52.
In an embodiment of the present utility model, each hanger plate assembly includes a first hanger plate 51 and a hanging ring 54, one end of the first hanger plate 51 is sleeved on the hanging rod, and the other end of the first hanger plate 51 is connected with the hanging ring 54.
It should be noted that, the two hanging plate assemblies are configured to match different structures of the weight hanging points, and when the structures of the weight hanging points have holes, a hanging plate assembly with a hanging shaft 53 inserted between a pair of second hanging plates 52 may be selected, so that the hanging shaft 53 passes through the holes to hang the weight. Hanger plate assemblies with hanger rings 54 may be used when the weight hanging points are configured with hooks. Or the running height and the hanging point of the heavy object have a certain distance, but the steel wire rope is too long to be used, and the hanging plate assembly with the hanging ring 54 is selected to meet the height requirement. The hanger plate assembly of the present utility model is thus suitable for use in the construction of different weight hanger points, including but not limited to the construction of weight hanger points in both cases.
In summary, the cross-shaped hanging beam structure adopts the split type upper beam and lower beam structure, so that the upper beam and the lower beam can be respectively designed according to the requirements to improve the overall bearing capacity. The load transmission path can be effectively adjusted by reasonably designing the connection mode of the upper beam and the lower beam, so that the overall stress state is improved, the performance of the structure when bearing a large load is more excellent, and the device is suitable for hoisting large-scale weights by two travelling cranes in a workshop.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
In the description herein, numerous specific details are provided, such as examples of components and/or methods, to provide a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that an embodiment of the utility model can be practiced without one or more of the specific details, or with other apparatus, systems, components, methods, components, materials, parts, and so forth. In other instances, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the utility model.
Reference throughout this specification to "one embodiment," "an embodiment," or "a particular embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment, and not necessarily all embodiments, of the present utility model. Thus, the appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the present utility model may be combined in any suitable manner with one or more other embodiments. It will be appreciated that other variations and modifications of the embodiments of the utility model described and illustrated herein are possible in light of the teachings herein and are to be considered as part of the spirit and scope of the utility model.
It will also be appreciated that one or more of the elements shown in the figures may also be implemented in a more separated or integrated manner, or even removed because of inoperability in certain circumstances or provided because it may be useful depending on the particular application.
In addition, any labeled arrows in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise specifically indicated. Furthermore, the term "or" as used herein is generally intended to mean "and/or" unless specified otherwise. Combinations of parts or steps will also be considered as being noted where terminology is foreseen as rendering the ability to separate or combine is unclear.
As used in the description herein and throughout the claims that follow, unless otherwise indicated, "a", "an", and "the" include plural references. Also, as used in the description herein and throughout the claims that follow, unless otherwise indicated, the meaning of "in..once again" includes "in..once again" and "on.
The above description of illustrated embodiments of the utility model, including what is described in the abstract, is not intended to be exhaustive or to limit the utility model to the precise forms disclosed herein. Although specific embodiments of, and examples for, the utility model are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present utility model, as those skilled in the relevant art will recognize and appreciate. As noted, these modifications can be made to the present utility model in light of the foregoing description of illustrated embodiments of the present utility model and are to be included within the spirit and scope of the present utility model.
The systems and methods have been described herein in general terms as being helpful in understanding the details of the present utility model. Furthermore, various specific details have been set forth in order to provide a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that an embodiment of the utility model can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, and/or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the utility model.
Thus, although the utility model has been described herein with reference to particular embodiments thereof, a latitude of modification, various changes and substitutions are intended in the foregoing disclosures, and it will be appreciated that in some instances some features of the utility model will be employed without a corresponding use of other features without departing from the scope and spirit of the utility model as set forth. Therefore, many modifications may be made to adapt a particular situation or material to the essential scope and spirit of the present utility model. It is intended that the utility model not be limited to the particular terms used in following claims and/or to the particular embodiment disclosed as the best mode contemplated for carrying out this utility model, but that the utility model will include any and all embodiments and equivalents falling within the scope of the appended claims. Accordingly, the scope of the utility model should be determined only by the following claims.
Claims (10)
1. A cross-shaped hanging beam structure, comprising:
An upper beam comprising an upper beam body (10);
The lower beam comprises a lower beam body (20), wherein the upper beam body (10) and the lower beam body (20) are arranged in a crisscross manner, and the upper beam body (10) is positioned above the lower beam body (20) and fixedly connected;
the lifting unit comprises a pair of first lifting assemblies (31) and a plurality of second lifting assemblies (32), wherein the pair of first lifting assemblies (31) are respectively arranged at two ends of the upper beam body (10), and at least two second lifting assemblies (32) are respectively arranged on the upper beam body (10) and the lower beam body (20);
Wherein each first hoisting assembly (31) and each second hoisting assembly (32) comprises a boom arranged horizontally, and each second hoisting assembly (32) is provided with a hanger plate assembly.
2. The cross-shaped hanging beam structure according to claim 1, wherein each of the first hanging assemblies (31) comprises a pair of first side plates (311) and a first hanging rod (312), the pair of first side plates (311) are arranged to extend along the end portion of the upper beam body (10), and the first hanging rod (312) is horizontally inserted on the pair of first side plates (311).
3. The cross-shaped hanging beam structure according to claim 2, wherein a reinforcing plate is attached to both side surfaces of each first side plate (311), and a first connecting plate (313) is provided at the lower end of a pair of the first side plates (311).
4. A cross-shaped hanging beam structure according to claim 3, wherein each second hanging assembly (32) comprises a second side plate (321) and a second hanging rod (322), the second side plates (321) and the side surfaces of the upper beam body (10) or the side surfaces of the lower beam body (20) are correspondingly arranged at intervals and are fixedly connected with the corresponding side surfaces through second connecting plates (323), and the second hanging rods (322) are horizontally inserted on the second side plates (321) and the corresponding side surfaces.
5. The cross-shaped hanging beam structure according to claim 4, wherein each of the first hanging rod (312) and the second hanging rod (322) is a hanging point pin shaft horizontally arranged, and a pair of anti-rotation baffles (40) are correspondingly arranged on two sides of a jack of each hanging point pin shaft.
6. The cross-shaped hanging beam structure according to claim 5, wherein a pair of mounting plates (21) are arranged at intervals in the middle of the lower beam body (20), the middle of the upper beam body (10) is arranged at the upper end of the lower beam body (20) between the pair of mounting plates (21) and is connected through connecting pins (22), and a pair of anti-rotation baffles (40) are correspondingly arranged at two sides of a corresponding pin jack of each connecting pin (22).
7. The cross-shaped hanging beam structure according to claim 6, wherein each mounting plate (21) is an inverted U-shaped plate, two sides of the mounting plate (21) are correspondingly clamped on the lower beam body (20), and the bottom of the mounting plate (21) extends out of the upper end of the lower beam body (20).
8. The cross-shaped hanging beam structure according to claim 7, wherein the upper beam body (10) and the lower beam body (20) are of hollow plate-frame structures, the second hanging components (32) are respectively arranged on two corresponding side surfaces of each end part of the upper beam body (10) and the lower beam body (20), and the second hanging components (32) are respectively arranged on two sides of the mounting plate (21) corresponding to each side surface of the lower beam body (20).
9. The cross-shaped hanging beam structure according to claim 1, wherein each hanging plate assembly comprises a first hanging plate (51) and a pair of second hanging plates (52), one end of the first hanging plate (51) is sleeved on the hanging rod, the other end of the first hanging plate (51) is connected with the pair of second hanging plates (52), and a hanging shaft (53) is inserted between the pair of second hanging plates (52).
10. The cross-shaped hanging beam structure according to claim 1, wherein each hanging plate assembly comprises a first hanging plate (51) and a hanging ring (54), one end of the first hanging plate (51) is sleeved on the hanging rod, and the other end of the first hanging plate (51) is connected with the hanging ring (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423035825.5U CN223547545U (en) | 2024-12-10 | 2024-12-10 | Cross hanging beam structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423035825.5U CN223547545U (en) | 2024-12-10 | 2024-12-10 | Cross hanging beam structure |
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| CN223547545U true CN223547545U (en) | 2025-11-14 |
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| CN202423035825.5U Active CN223547545U (en) | 2024-12-10 | 2024-12-10 | Cross hanging beam structure |
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| CN (1) | CN223547545U (en) |
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