A steel sheet latticework connecting device and a steel pipe external scaffold

Abstract

The utility model relates to the technical field of building engineering, concretely relates to the optimization design of the structure of external scaffold and steel sheet net connecting device, the utility model is realized through the following technical scheme: a kind of external frame steel sheet net connecting device, including connecting steel pipe and connecting plate, the one end of connecting steel pipe is provided with the slot for the insertion of connecting plate along its length direction, and the slot extends the clamping interface of connecting steel pipe in the circumferential direction;Connecting plate includes the horizontal main part of part insertion in the connecting steel pipe, and the convex part of the clamping interface resistance cooperation that is outwardly extended horizontally from horizontal main part. The utility model aims at the improvement of the structure of connecting steel pipe and connecting plate itself, the stable connection of both can be realized without additional connecting bolt, eliminate the security risk caused by bolt drop, enhance the security and stability in construction process.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to the optimized design of the connection device structure between external scaffolding and steel mesh. Background Technology

[0002] External scaffolding is a temporary structure used in building construction to erect working platforms and provide external protection. It is widely used in the main construction and facade decoration of high-rise buildings. It not only provides safe working space for construction workers but also serves as a material storage and equipment transportation facility, making it an important facility for ensuring construction site safety and improving construction efficiency. To further enhance the safety and practicality of external scaffolding, modern scaffolding systems often have protective components added to the outside. Among these, steel mesh, with its high strength, durability, and good fire resistance, has gradually become an ideal choice for facade enclosure protection. In practical applications, steel mesh needs to be fixed to the uprights or horizontal bars of the scaffolding using special connectors to ensure stable installation and prevent it from falling off, thus providing excellent protection.

[0003] For example, Chinese patent document CN115354841A discloses a steel pipe external scaffold and its connection device with a metal safety net. The connection device includes: a connecting steel pipe; a connecting bolt, which is vertically inserted and fixedly installed on one end of the connecting steel pipe; and a flat steel connector, including an extended horizontal steel plate inserted into the connecting steel pipe and fixedly installed on the connecting steel pipe by the connecting bolt.

[0004] In existing connection devices, the connecting steel pipe and flat steel connector are fixed together using connecting bolts. However, the installation of these bolts requires precise alignment of the bolt holes, a cumbersome and time-consuming process that impacts installation efficiency. Furthermore, the connecting bolts are prone to loosening under the influence of construction vibrations, reducing the overall structural stability and safety. In addition, due to the small size of the bolts, even slight carelessness during installation can cause them to fall, posing a safety hazard of injuring personnel below or damaging equipment, resulting in a high construction risk. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, this utility model proposes an external steel plate mesh connection device and a steel pipe external scaffolding. No connecting bolts are required during the installation process. Not only is the structure stable and reliable, but the operation is also simpler, significantly improving the installation efficiency. At the same time, it eliminates the safety hazards caused by bolt falling off, effectively enhancing the safety and stability of the construction process.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an external steel mesh connection device, comprising a connecting steel pipe and a connecting plate, wherein one end of the connecting steel pipe is provided with an insertion groove for inserting the connecting plate along its length direction, and a locking interface extends circumferentially from the insertion groove toward the connecting steel pipe; the connecting plate comprises a horizontal main body partially inserted into the connecting steel pipe, a protrusion extending horizontally outward from the horizontal main body and engaging with the locking interface, and a steel mesh limiting plate vertically disposed at the end of the horizontal main body away from the connecting steel pipe, the steel mesh limiting plate comprising an upper limiting plate and a lower limiting plate respectively located on the upper and lower sides of the horizontal main body, and a steel mesh receiving groove is formed between the proximal end of the connecting steel pipe and the steel mesh limiting plate.

[0007] This application provides a connecting device for an external steel mesh frame, including a connecting steel pipe and a connecting plate. The connecting plate includes a horizontal main body and a protrusion extending horizontally outward from the main body. The protrusion is configured to abut against a locking interface of the connecting steel pipe. The radial width of the protrusion is greater than the inner diameter of the connecting steel pipe. Therefore, the connecting plate cannot be directly inserted into one end of the connecting steel pipe. To achieve the connection, an insertion groove is formed along the length of one end of the connecting steel pipe. This insertion groove radially penetrates the wall of the connecting steel pipe and extends circumferentially to form a locking interface. Through this insertion groove, the connecting plate can be inserted axially into the connecting steel pipe. Then, by rotating the connecting plate, the protrusion enters the locking interface, thereby achieving a stable connection between the connecting plate and the connecting steel pipe.

[0008] During installation, multiple external scaffold steel mesh connecting devices are horizontally fixed to the external scaffold steel pipes along the height direction using fasteners. At this time, the connecting plates face outwards, with their horizontal main bodies aligned with the extension direction of the connecting steel pipes, both arranged horizontally. This allows the steel mesh limiting plates, vertically positioned at the ends of the connecting plates, to extend longitudinally. The steel mesh limiting plates consist of an upper limiting plate above the horizontal main body and a lower limiting plate below it. Both plates mate with the proximal ends of the connecting steel pipes, forming steel mesh receiving grooves to accommodate the upper and lower ends of the steel mesh. During installation, the upper and lower ends of the steel mesh are inserted into their corresponding receiving grooves. The steel mesh limiting plates and one end of the connecting steel pipes then exert a restraining effect on the steel mesh, thereby achieving a stable connection between the steel mesh and the external scaffold steel pipes.

[0009] This invention achieves a stable connection between the connecting steel pipe and the connecting plate through a snap-fit ​​mechanism between the snap-fit ​​interface on the connecting steel pipe and the protrusion on the connecting plate. This structure eliminates the need for additional fastening bolts or other connecting components, significantly improving assembly efficiency and avoiding safety hazards caused by loose or detached bolts. This effectively enhances safety during construction and the stability of the overall structure.

[0010] Preferably, the insertion groove is provided in two sets and is symmetrically arranged along the diameter direction of the connecting steel pipe. Each set of insertion grooves extends into different circumferential directions of the connecting steel pipe to form a set of locking interfaces. The two sides of the horizontal main body extend outward to form protrusions that abut against and cooperate with each set of locking interfaces.

[0011] By setting two sets of symmetrical insertion slots and locking interfaces, the connecting plate needs to be rotated at a certain angle after insertion, so that the protrusions on both sides simultaneously engage with the corresponding locking interfaces, thus achieving double-point locking. This effectively improves the connection strength and stability between the connecting plate and the connecting steel pipe, ensuring uniform force distribution and preventing deflection or loosening caused by unilateral force. Furthermore, setting the two sets of insertion slots on the diameter of the connecting steel pipe's cross-section ensures that the protrusions on both sides can synchronously enter the locking interfaces when the connecting plate is inserted and rotated, avoiding problems such as difficulty in locking or weak locking due to unequal distances, further improving the reliability of the connection and construction efficiency.

[0012] Preferably, the width of the horizontal main body is equal to the inner diameter of the connecting steel pipe.

[0013] The width of the horizontal main body matches the inner diameter of the connecting steel pipe, ensuring that the connecting plate fits tightly against the inner wall of the connecting steel pipe after insertion. This not only improves assembly accuracy but also effectively prevents loosening of the connection due to shaking or offset during use, significantly enhancing the stability and load-bearing capacity of the overall structure.

[0014] Preferably, the connecting plate further includes an abutment plate vertically disposed on the horizontal main body, the abutment plate including a connecting steel pipe abutment surface and a steel mesh abutment surface.

[0015] After the steel mesh is installed into the steel mesh receiving groove, its side will press against the abutment plate, so that the connecting plate is subjected to the reverse pressure from the steel mesh, and the pressure is transmitted to the end face of the connecting steel pipe through the abutment plate, which further enhances the tightness of the connection between the connecting plate and the connecting steel pipe, prevents the connecting plate from loosening or falling off, and thus significantly improves the stability of the overall connection structure.

[0016] Preferably, the steel mesh limiting plate and the contact plate are integrally formed with the horizontal main body.

[0017] Both the steel mesh limiting plate and the contact plate are integrally formed by cutting and bending the connecting plate body, rather than by welding or assembling with bolts, riveting, or other connecting devices. This structural design avoids weak points such as weld cracking and loose connections that may occur in traditional splicing structures, significantly improving the overall structural strength and durability of the connecting plate.

[0018] Preferably, the circumferential width of the groove is the same as the thickness of the connecting plate.

[0019] The circumferential width of the groove is consistent with the thickness of the connecting plate, which can effectively reduce the possibility that the connecting plate will come out of the groove axially due to external vibration or force after rotation and snapping, thereby significantly improving the overall stability and safety of the connection structure.

[0020] Preferably, the connecting steel pipe is a galvanized steel pipe.

[0021] The connecting steel pipes are made of galvanized steel pipes, which can effectively improve the corrosion resistance and rust prevention of the connecting steel pipes, and are especially suitable for complex environments such as construction sites that are dusty, humid or rainy.

[0022] A steel pipe external scaffolding includes the aforementioned external scaffolding steel mesh connecting device, and also includes multiple overlapping external scaffolding steel pipes and multiple vertically arranged steel meshes. Each of the external scaffolding steel mesh connecting devices is installed on the external scaffolding steel pipes through pipe fasteners, and the upper and lower ends of each steel mesh are respectively inserted into the steel mesh receiving groove.

[0023] In summary, this utility model has the following beneficial effects:

[0024] 1. By improving the structure of the connecting steel pipe and the connecting plate, a stable connection between the two can be achieved without additional fasteners.

[0025] 2. Through the interaction between the steel mesh and the contact plate, the tightness of the connection between the connecting plate and the connecting steel pipe can be further enhanced, thereby significantly improving the stability of the overall connection structure.

[0026] 3. Two sets of insertion grooves and corresponding locking interfaces are symmetrically arranged along the diameter of the cross-section of the connecting steel pipe. The protrusions on both sides of the connecting plate are simultaneously locked into the locking interfaces to achieve double-point locking, which effectively improves the connection strength and stability between the connecting plate and the connecting steel pipe. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the external steel mesh connection device in Embodiment 1;

[0028] Figure 2 yes Figure 1 Top view of the connecting plate structure;

[0029] Figure 3 yes Figure 1 Front view of the middle connecting plate structure;

[0030] Figure 4 yes Figure 1 Side view of the middle connecting plate structure;

[0031] Figure 5 This is a schematic diagram of the connection device between the external scaffold steel mesh and the steel mesh.

[0032] Figure 6 This is a schematic diagram of the overall structure of the steel pipe external scaffolding;

[0033] Figure 7 yes Figure 6 Detailed schematic diagram of the structure at point A in the middle.

[0034] in:

[0035] 1-Connecting steel pipe; 11-Extending groove; 12-Clipping interface; 2-Connecting plate; 21-Horizontal main body; 22-Protrusion; 23-Steel mesh limiting plate; 231-Upper limiting plate; 232-Lower limiting plate; 24-Steel mesh receiving groove; 25-Contact plate; 251-Connecting steel pipe contact surface; 252-Steel mesh contact surface; 3-External scaffolding steel pipe; 4-Steel mesh. Detailed Implementation

[0036] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the present utility model is further described below in conjunction with specific illustrations. However, this utility model is not limited to the following embodiments.

[0037] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0038] Example 1: As Figure 6 and Figure 7 As shown, a steel pipe external scaffolding includes multiple overlapping external scaffolding steel pipes 3 and multiple vertically arranged steel mesh panels 4. During installation, the external scaffolding steel mesh connecting device is first horizontally installed onto the external scaffolding steel pipes 3 using pipe couplers, and then the steel mesh panels 4 are tightly fixed onto the external scaffolding steel pipes 3 using the external scaffolding steel mesh connecting device.

[0039] The main innovation of this application lies in the structural improvement of the connection device for the external steel mesh frame. Specifically, such as... Figure 1As shown, the external steel mesh connection device mainly includes a connecting steel pipe 1 and a connecting plate 2. The connecting steel pipe 1 is a galvanized steel pipe, which has good corrosion resistance and is suitable for complex environments such as construction sites. An insertion groove 11 is formed at one end of the connecting steel pipe 1 along its length, and the insertion groove 11 radially penetrates the pipe wall. In this embodiment, two sets of insertion grooves 11 are provided, each located in the diameter direction of the end face of the connecting steel pipe 1. The bottom of each set of insertion grooves 11 extends in different circumferential directions of the connecting steel pipe 1 to form a locking interface 12. Specifically, when the connecting steel pipe 1 is in a horizontal installation state, one locking interface 12 extends upwards along its circumference, while the other extends downwards along its circumference.

[0040] The specific structure of connecting plate 2 is as follows: Figure 2 As shown, the structure includes a horizontal main body 21 and protrusions 22 extending horizontally to both sides from below the main body 21. During installation, the connecting plate 2 is inserted into the steel pipe 1 through the insertion groove 11 at the end of the connecting steel pipe 1. Then, the connecting plate 2 is rotated at a certain angle, causing the protrusions 22 on both sides to engage with their corresponding locking interfaces 12, achieving double-point locking. This structural design not only improves the connection strength and stability between the connecting plate 2 and the connecting steel pipe 1, but also ensures uniform force distribution, effectively preventing deflection or loosening caused by unilateral force, thus enhancing the safety and reliability of the overall structure.

[0041] In this embodiment, preferably, the thickness of the connecting plate 2 is the same as that of the insertion groove 11, and the width of the horizontal main body 21 is equal to the inner diameter of the connecting steel pipe 1. On the one hand, the circumferential width of the insertion groove 11 being the same as the thickness of the connecting plate 2 effectively reduces the possibility of the connecting plate coming off axially from the insertion groove 11 due to external vibration or force after rotational engagement, thereby significantly improving the overall stability and safety of the connection structure. On the other hand, the width of the horizontal main body 21 matching the inner diameter of the connecting steel pipe 1 ensures that the connecting plate 2 fits tightly against the inner wall of the connecting steel pipe after insertion, which not only improves assembly accuracy but also effectively prevents loosening of the connection due to shaking or offset during use, significantly enhancing the stability and load-bearing capacity of the overall structure.

[0042] like Figures 3 to 5 As shown, a steel mesh limiting plate 23 is vertically provided at the end of the connecting plate 2 away from the connecting steel pipe 1, including an upper limiting plate 231 and a lower limiting plate 232. Both plates mate with the proximal end of the connecting steel pipe 1 to form a steel mesh receiving groove 24 for accommodating the upper and lower ends of the steel mesh 4. Specifically, as shown... Figure 5 As shown, during the installation process, the upper and lower ends of the steel mesh 4 are inserted into the corresponding steel mesh receiving grooves 24. At this time, the steel mesh limiting plate 23 and one end of the connecting steel pipe 1 jointly exert a resisting and limiting effect on the steel mesh 4, thereby achieving a stable connection between the steel mesh 4 and the outer frame steel pipe 3.

[0043] In addition, the connecting plate 2 also includes a vertically arranged abutment plate 25 on the horizontal main body 21, which includes a connecting steel pipe abutment surface 251 that mates with the end face of the connecting steel pipe 1 and a steel mesh abutment surface 252 that mates with the side of the steel mesh 4. When the steel mesh 4 is installed into the steel mesh receiving groove 24, its side will press against the abutment plate 25, so that the connecting plate 2 is subjected to the reverse pressure from the steel mesh 4, and the pressure is transmitted to the end face of the connecting steel pipe 1 through the abutment plate 25, which further enhances the tightness of the fit between the connecting plate 2 and the connecting steel pipe 1, effectively preventing the connecting plate from loosening or falling off during use, and significantly improving the stability and reliability of the overall connection structure.

[0044] In some embodiments, the steel mesh limiting plate 23 and the abutment plate 25 can be fixed to the horizontal main body 21 by welding or other methods. However, in this embodiment, preferably, both the steel mesh limiting plate 23 and the abutment plate 25 are integral structures formed by partially cutting and bending the connecting plate 2 body, rather than being assembled using detachable connection methods such as welding, bolting, or riveting. This integrally formed structure avoids weak points such as weld cracking and loose connections that may occur in traditional spliced ​​structures, not only improving manufacturing efficiency but also significantly enhancing the overall strength and durability of the connecting plate, making it suitable for frequent installation and use in complex environments such as construction sites.

[0045] The above description is merely a preferred embodiment disclosed in this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of protection involved in this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this disclosure.

[0046] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

Claims

1. A steel mesh frame connection device, comprising a connecting steel pipe (1) and a connecting plate (2), characterized in that: One end of the connecting steel pipe (1) is provided with an insertion groove (11) for the connecting plate (2) to be inserted along its length direction, and the insertion groove (11) extends circumferentially toward the connecting steel pipe (1) with a locking interface (12); The connecting plate (2) includes a horizontal main body (21) partially inserted into the connecting steel pipe (1), a protrusion (22) extending horizontally outward from the horizontal main body (21) and engaging with the card interface (12), and a steel mesh limiting plate (23) vertically disposed at one end of the horizontal main body (21) away from the connecting steel pipe (1); The steel mesh limiting plate (23) includes an upper limiting plate (231) and a lower limiting plate (232) located on the upper and lower sides of the horizontal main body (21), respectively. A steel mesh receiving groove (24) is formed between the near end of the connecting steel pipe (1) and the steel mesh limiting plate (23).

2. The external steel mesh connection device according to claim 1, characterized in that: The insertion groove (11) is provided in two sets and is symmetrically arranged along the diameter direction of the connecting steel pipe (1). Each set of insertion grooves (11) extends to different circumferential directions of the connecting steel pipe (1) to form a set of card interfaces (12). The horizontal main body (21) extends outward from both sides to form protrusions (22) that abut against and cooperate with each set of card interfaces (12).

3. The external steel mesh connection device according to claim 1, characterized in that: The width of the horizontal main body (21) is equal to the inner diameter of the connecting steel pipe (1).

4. The external steel mesh connection device according to claim 1, characterized in that: The connecting plate (2) also includes an abutment plate (25) vertically disposed on the horizontal main body (21), the abutment plate (25) including a connecting steel pipe abutment surface (251) and a steel mesh abutment surface (252).

5. The external steel mesh connection device according to claim 4, characterized in that: The steel mesh limiting plate (23) and the contact plate (25) are integrated with the horizontal main body (21).

6. The external steel mesh connection device according to claim 1, characterized in that: The circumferential width of the insertion groove (11) is consistent with the thickness of the connecting plate (2).

7. The external steel mesh connection device according to claim 1, characterized in that: The connecting steel pipe (1) is a galvanized steel pipe.

8. A steel pipe external scaffold, characterized in that: It includes multiple external steel plate mesh connection devices as described in any one of claims 1-7, and also includes multiple overlapping external steel pipes (3) and multiple vertically arranged steel plate meshes (4). Each of the external steel plate mesh connection devices is installed on the external steel pipe (3) through pipe fasteners, and the upper and lower ends of each of the steel plate meshes (4) are respectively inserted into the steel plate mesh receiving groove (24).

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