Metal protective net with fasteners

Abstract

To provide a metal protective net with fasteners that significantly improves fixing stability. [Solution] The metal protective net with fasteners includes a protective net body and fasteners (2). The protective net body has a mesh structure formed by multiple intersecting meridians and latitudes, and the intersections of the meridians and latitudes are fixed by fasteners. The fasteners are cross-shaped fasteners and include cross-arc connecting portions (201) and tubular portions (202) integrally connected to the four ends of the cross-arc connecting portions. The tubular portions are formed by bending extension plates, which have an asymmetric or stepped structure, and an overlapping structure is formed after bending the extension plates. By making the extension plates of the fasteners asymmetric or stepped and forming an overlapping structure after bending the extension plates, the contact area between the tubular portions and the metal wire is increased, a covering restraint is formed, and the metal wire is prevented from escaping from the tubular portions when subjected to external force.

Description

[Technical Field]

[0001] The present invention relates to the technical field of safety nets, and in particular to metal safety nets with fasteners. [Background technology]

[0002] Protective nets are widely used in places such as construction, transportation, mining, stadiums, etc., for purposes such as protection, isolation, fencing, etc. Conventional protective nets often connect the meridians and parallels by welding, braiding, or bolting, but these methods have problems such as the connections being prone to loosening, the rigidity of the net itself being excessive, low construction efficiency, and poor earthquake resistance and impact resistance.

[0003] To improve the flexibility and connection reliability of protective nets, the prior art has proposed protective net structures that use fasteners to secure crossing nodes. A typical fastening fastener is formed by stamping and bending a cross-shaped metal base plate. This metal base plate includes a cross-shaped center plate and symmetrical rectangular extension plates extending outward from each end of the cross-shaped center plate. During installation, a metal wire is placed on the rectangular extension plate, which is then folded and wound into a cylindrical shape to embrace and secure the metal wire.

[0004] However, the extension plates of such cross-shaped fasteners are often symmetrical, and after bending, the opposing edges of the rectangular extension plates usually do not contact each other, or only meet at the joints, or only overlap to a very small extent. With this structure, the fastening to the metal wire relies primarily on the elastic clamping force of the cylinder itself, which has limited fastening strength. When the safety net is subjected to wind loads, impacts, or vibrations over a long period of time, the metal wire tends to slip or rotate within the fastener, causing the nodes to loosen. In severe cases, the metal wire may slip out of the poorly joined joints, causing the safety net to fail in part or entirely, posing a serious safety hazard.

[0005] The above issues need to be resolved urgently. Summary of the Invention

[0006] The purpose of this invention is to provide a metal safety net with fasteners, which aims to solve the technical problem that the fastening effect of conventional safety nets using symmetrical cross fasteners is limited, which makes it easy for the nodes to loosen and even lose their fastening ability.

[0007] In order to achieve the above objectives, the technical solution adopted by this invention is to provide a metal protective net with fasteners, which includes a protective net body and fasteners, the protective net body having a mesh structure formed by multiple meridians and latitudes crossing each other, the intersections of the meridians and latitudes being fixed by the fasteners, the fasteners being cross-shaped fasteners including cross-arc connecting parts and tubular parts respectively integrally connected to the four ends of the cross-arc connecting parts, the tubular parts being formed by bending extension plates, the extension plates having an asymmetrical structure or a stepped structure, and the overlapping structure being formed by bending the extension plates.

[0008] In one embodiment, the fastener is formed by bending a cross-shaped base plate, which includes a cross-shaped center plate and extension plates integrally connected to the four ends of the cross-shaped center plate, the width of the extension plates being greater than the width of the cross-shaped center plate, and the cross-shaped arc-shaped connection portions being formed by bending the cross-shaped center plate.

[0009] In one embodiment, when the extension plate has an asymmetric structure, it includes a first region and a second region, the width of the first region is greater than the width of the second region, and after bending, the first region covers and overlaps the outside of the second region.

[0010] In one embodiment, when the extension plate has a stepped structure, it includes a third region close to the cross-shaped center plate and a fourth region far from the cross-shaped center plate, and the width of the fourth region is greater than the width of the third region, and after bending, both side edges of the fourth region cover and overlap each other.

[0011] In one embodiment, the four inner corners of the cross-shaped center plate are all provided with arc-shaped chamfers.

[0012] In one embodiment, all four corners of the extension plate are rounded.

[0013] In one embodiment, the material of the cross-shaped substrate plate comprises 304 stainless steel, and the thickness of the cross-shaped substrate plate is 0.3-0.5 mm.

[0014] In one embodiment, both the meridians and the wefts are stainless steel wire ropes, and the stainless steel wire ropes are formed by twisting together seven stainless steel core threads, and each stainless steel core thread is formed by twisting together seven stainless steel filaments.

[0015] In one embodiment, the material of the stainless steel filament comprises 316 stainless steel, and the diameter of the stainless steel filament is 0.8-1.0 mm.

[0016] In one embodiment, the mesh formed by the intersection of the meridians and parallels is square or rectangular.

[0017] The present invention provides a metal safety net with fasteners, and compared with the prior art, its beneficial effects are as follows: (1) By making the extension plate of the fastening device asymmetrical or stepped, and by forming an overlapping structure after bending the extension plate, the contact area between the tubular portion and the metal wire (meridians and parallels) is increased, and a "covering restraint" is formed, which prevents the metal wire from escaping from the tubular portion when subjected to external force, significantly improving the stability of the fixation and solving the technical problem of conventional symmetric extension plates, which are "simple abutments that are prone to loosening."

[0018] (2) When the extension plate of the fastener has an asymmetric structure, the difference in width between the wide and narrow portions is utilized, and after bending, the wide portion covers the outside of the narrow portion and overlaps with it, forming a denser overlapping layer, increasing the contact area with the metal wire, improving the robustness of the fixation, and preventing the metal wire from escaping due to external force.

[0019] (3) When the extension plate of the fastener has a stepped structure, the edges of the wide portion overlap and cover each other after bending, strengthening the fastening ability at the distal end of the tubular portion and preventing the metal wire from slipping out of the distal end of the tubular portion. Also, when the edges of the narrow and wide portions can overlap and cover each other after bending, the narrow and wide portions cooperate to form a "stepped covering," further improving the fastening strength and making it particularly suitable for fastening metal wires whose edge regions are susceptible to tension due to external forces.

[0020] (4) By making the cross-shaped arc-shaped connection part of the fastening device arc-shaped, the gap with the metal wire is reduced, the contact with the metal wire is improved, the risk of localized wear and breakage is reduced, and the service life of the protective net is extended. [Brief explanation of the drawings]

[0021] In order to more clearly explain the technical solutions in the embodiments of the present invention, the following briefly describes the drawings used in the description of the embodiments or prior art. It is obvious that the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without any creative efforts.

[0022] [Figure 1] 1 is a structural schematic diagram of a metal protective net with fasteners according to a first embodiment of the present invention; [Figure 2] 2 is an enlarged schematic view of the structure of the fastener in the metal protection net with fastener shown in FIG. 1. [Figure 3] 2 is an enlarged schematic diagram of the structure of the cross-shaped base plate in the metal protective net with fasteners shown in FIG. 1. [Figure 4] 2 is a schematic diagram of the structure of the metal protective net with fasteners shown in FIG. 1 after the cross-shaped base plate is folded. [Figure 5] 1 is a structural schematic diagram of a metal protective net with fasteners according to a second embodiment of the present invention; [Figure 6] 6 is an enlarged schematic view of the structure of the fasteners in the metal protection net with fasteners shown in FIG. 5. [Figure 7] 6 is an enlarged schematic diagram of the structure of the cross-shaped base plate in the metal protection net with fasteners shown in FIG. 5. [Figure 8] 6 is a schematic diagram of the structure of the metal protective net with fasteners shown in FIG. 5 after the cross-shaped base plate is folded.

[0023] Explanation of symbols 1, protective net body; 101, meridian; 102, parallel; 2, fastener; 201, cross-shaped arc-shaped connecting part; 202, cylindrical part; 3, cruciform base plate; 301, cruciform center plate; 302, extension plate; 30201, first region; 30202, second region; 30203, third region; 30204, fourth region. DETAILED DESCRIPTION OF THE INVENTION

[0024] In order to make the technical problems, technical solutions, and advantageous effects of the present invention more clearly understood, the present invention will be described in more detail below with reference to the drawings and examples, which are provided for illustrative purposes only and are not intended to limit the scope of the present invention.

[0025] It should be noted that when a component is said to be "fixed" or "mounted" on another component, it may be directly mounted on the other component or indirectly mounted on the other component. Also, when a component is said to be "connected" to another component, it may be directly connected to the other component or indirectly connected to the other component.

[0026] Orientations or positional relationships indicated by terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are based on orientations or positional relationships shown in the drawings and are intended to facilitate and simplify the explanation of the present invention, but do not necessarily mean that the indicated devices or components have a specific orientation or are configured and operate in a specific orientation, and therefore do not limit the present invention. Furthermore, terms such as "first," "second," and "third" are used merely for the purpose of distinction and do not indicate relative importance.

[0027] Example 1 1, there is shown a structural schematic diagram of a metal safety net with fasteners according to a first embodiment of the present invention. For ease of explanation, only the parts relevant to this embodiment are shown and will be described in detail below. 2 to 4, the metal protective net with fasteners includes a protective net main body 1 and fasteners 2. The protective net main body 1 has a mesh structure formed by a plurality of meridians 101 and latitudes 102 crossing each other, and the intersections of the meridians 101 and latitudes 102 are fixed by fasteners 2. The fasteners 2 are cross-shaped fasteners and include cross-arc connecting portions 201 and tubular portions 202 that are respectively connected integrally to the four ends of the cross-arc connecting portions 201. The tubular portions 202 are formed by bending extension plates 302, which have an asymmetric structure and form an overlapping structure after bending the extension plates 302.

[0028] By making the extension plate 302 of the fastening device 2 asymmetrical in structure and forming an overlapping structure after bending the extension plate 302, the contact area between the tubular portion 202 and the metal wire (meridian 101 and latitude 102) is increased, and a "covering restraint" is formed, preventing the metal wire from escaping from the tubular portion 202 when subjected to external force, significantly improving the stability of fixation and solving the technical problem of conventional symmetric extension plates that "are simply abutting and are prone to loosening."

[0029] By making the cross-shaped arc-shaped connection portion 201 of the fastener 2 arc-shaped, the gap with the metal wire is reduced, the contact with the metal wire is improved, the risk of localized wear and breakage is reduced, and the service life of the protective net is extended.

[0030] 2 and 3, the fastener 2 is formed by bending a cross-shaped base plate 3, which includes a cross-shaped central plate 301 and extension plates 302 that are integrally connected to the four ends of the cross-shaped central plate 301, the width of the extension plates 302 being greater than the width of the cross-shaped central plate 301, and the cross-shaped arc-shaped connecting portions 201 being formed by bending the cross-shaped central plate 301. The cross-shaped base plate 3 is integrally formed, which ensures the strength of the fastener 2.

[0031] 3 and 4, extension plate 302 includes first region 30201 and second region 30202. First region 30201 is wider than second region 30202, and after bending, first region 30201 overlaps and covers the outside of second region 30202. By making extension plate 302 asymmetrical, the difference in width between the wide and narrow portions is utilized, and after bending, the wide portion overlaps and covers the outside of the narrow portion, forming a denser overlapping layer and increasing the contact area with the metal wire, improving the robustness of the fixation and preventing the metal wire from being pulled out by external force.

[0032] 3, the four inner corners of the cross-shaped center plate 301 are all chamfered in an arc. The chamfered arc distributes stress when bending or under load, preventing the cross-shaped center plate 301 from cracking at the four corners. The chamfered arc also makes the inner edge of the cross-shaped center plate 301 smoother, preventing damage to the metal wire or the operator during installation and improving usability.

[0033] 3, R-chamfering is provided on all four corners of the extension plate 302. The R-chamfering makes the edges of the extension plate 302 smoother, preventing damage to the metal wires and injury to the worker during installation, thereby improving safety.

[0034] Referring to FIG. 3, the material of the cross-shaped base plate 3 includes 304 stainless steel, and the thickness of the cross-shaped base plate 3 is 0.3-0.5 mm. 304 stainless steel has excellent rust resistance and is suitable for harsh environments such as humid, acidic, or alkaline environments (e.g., construction sites and chemical plants), thereby extending the service life of the fastener 2. Furthermore, 304 stainless steel has high strength and good toughness, allowing it to be formed into complex structures by bending without deformation. By making the thickness 0.3-0.5 mm, the fastener 2 will not be too thin to deform or break when subjected to the tension of the safety net, and it will be easy to bend and form.

[0035] 1, the meridians 101 and the wefts 102 are both stainless steel wire ropes, and the stainless steel wire rope is formed by twisting together seven stainless steel middle threads, and each stainless steel middle thread is formed by twisting together seven stainless steel filaments. By adopting a "7x7" twist structure for the meridians 101 and the wefts 102, the protective net can absorb energy through slight deformation when subjected to an impact, making it less likely to break due to brittleness, and maintaining sufficient load-bearing capacity.

[0036] Referring to Figure 1, the stainless steel filament material includes 316 stainless steel, and the diameter of the stainless steel filament is 0.8-1.0 mm. 316 stainless steel has better resistance to acid, alkali, and chloride ion corrosion, making it particularly suitable for highly corrosive environments such as coastal areas and chemical plants, thereby extending the service life of the safety net. The 0.8-1.0 mm diameter ensures the strength of the stainless steel filament, resulting in a stainless steel wire rope with moderate flexibility and sufficient strength.

[0037] 1, the mesh formed by the intersection of meridians 101 and latitudes 102 is square or rectangular. A square or rectangular mesh is easily compatible with fasteners 2, facilitating the connection of fasteners 2 to protective net body 1.

[0038] Hereinafter, the operation process of the metal protection net with fasteners according to the first embodiment will be described with reference to FIGS. When in use, the intersection of the meridians 101 and the latitudes 102 is pressed into the cross-arc-shaped connection portion 201, the meridians 101 and the latitudes 102 are placed inside the extension plate 302, and both side edges of the extension plate 302 are pressed inward to bend and roll the extension plate 302 into a cylindrical shape, and the both side edges of the extension plate 302 are covered and overlapped to form the cylindrical portion 202, thereby embracing and fixing the metal wire (the meridians 101 and the latitudes 102).

[0039] Example 2 5, there is shown a structural schematic diagram of a metal safety net with fasteners according to a second embodiment of the present invention. For ease of explanation, only the parts relevant to this embodiment are shown and will be described in detail below. The differences of this embodiment compared to Example 1 are as follows: In other words, in this embodiment, referring to Figures 6 to 8, the extension plate 302 has a stepped structure and includes a third region 30203 close to the cross-shaped central plate 301 and a fourth region 30204 far from the cross-shaped central plate 301, the width of the fourth region 30204 is greater than the width of the third region 30203, and after bending, both side edges of the fourth region 30204 cover and overlap each other.

[0040] By making the extension plate 302 of the fastening device 2 a stepped structure and forming an overlapping structure after bending the extension plate 302, the contact area between the tubular portion 202 and the metal wire (meridian 101 and latitude 102) is increased, and a "covering restraint" is formed, preventing the metal wire from escaping from the tubular portion 202 when subjected to external force, significantly improving the stability of fixation and solving the technical problem of conventional symmetrical extension plates that "are simply abutting and are prone to loosening."

[0041] Compared with Example 1, in this example, the extension plate 302 has a stepped structure, and after bending, both side edges of the wide portion are covered and overlapped, thereby strengthening the fixing ability at the distal end of the tubular portion 202 and preventing the metal wire from slipping out from the distal end of the tubular portion 202. Furthermore, when both side edges of the narrow portion and the wide portion are covered and overlapped after bending, the narrow portion and the wide portion cooperate to form a "stepped covering," which further improves the fastening strength and is particularly suitable for fixing metal wires whose edge regions are susceptible to tension due to external forces.

[0042] In this embodiment, the structures and shapes of the meridians 101, latitudes 102, cross-arc joints 201 and cross-shaped central plate 301 are the same as those in the first embodiment, and therefore detailed description thereof will be omitted here.

[0043] Hereinafter, the operation process of the metal protection net with fasteners according to the second embodiment will be described with reference to FIGS. When in use, the intersection of the meridians 101 and the latitudes 102 is pressed into the cross-arc-shaped connection portion 201, the meridians 101 and the latitudes 102 are placed inside the extension plate 302, and both side edges of the extension plate 302 are pressed inward to bend and roll the extension plate 302 into a cylindrical shape, and the both side edges of the extension plate 302 are covered and overlapped to form the cylindrical portion 202, thereby embracing and fixing the metal wire (the meridians 101 and the latitudes 102).

[0044] As described above, the present invention provides a metal protective net with fasteners, and compared with the prior art, (1) by making the extension plates of the fasteners asymmetrical or stepped, and by forming an overlapping structure after bending the extension plates, the contact area between the tubular portion and the metal wires (longitudinal and longitudinal lines) is increased, and a "covering restraint" is formed, preventing the metal wires from escaping from the tubular portion when subjected to external force, significantly improving the stability of the fastening, and solving the technical problem of the prior symmetrical extension plates that "merely abut and are prone to loosening"; (2) when the extension plates of the fasteners have an asymmetrical structure, the difference in width between the wide and narrow portions is utilized, and after bending, the wide portion covers and overlaps the outside of the narrow portion, forming a denser overlapping layer, increasing the contact area with the metal wires, improving the robustness of the fastening, and preventing the metal wires from slipping out of the tubular portion. (3) When the extension plate of the fastener has a stepped structure, the edges of the wide section overlap after bending, strengthening the fixing ability at the distal end of the tubular section and preventing the metal wire from slipping out from the distal end of the tubular section. Furthermore, when the edges of the narrow and wide sections overlap after bending, the narrow and wide sections jointly form a "stepped covering," further improving the fixing strength, particularly suitable for fixing metal wires whose edge regions are susceptible to tension due to external forces. (4) The arc-shaped cross-arc connecting section of the fastener reduces the gap with the metal wire, improving contact with the metal wire, reducing the risk of localized wear and breakage, and extending the service life of the protective net. This device can be widely applied in the field of protective net technology.

[0045] The above-described embodiments are intended to illustrate, but not to limit, the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications can be made to the technical solutions described in the above embodiments, or equivalent substitutions can be made for some of the technical features. These modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and all fall within the scope of protection of the present invention.

Claims

1. A metal protective net with fasteners, The protective net includes a main body (1) and a fastening device (2), The metal protective net with fasteners is characterized in that the protective net main body (1) has a mesh structure formed by the intersection of multiple meridians (101) and latitudes (102), the intersections of the meridians (101) and the latitudes (102) are fixed by the fasteners (2), the fasteners (2) are cross-shaped fasteners and include cross-arc connecting portions (201) and tubular portions (202) that are integrally connected to the four ends of the cross-arc connecting portions (201), the tubular portions (202) are formed by bending extension plates (302), the extension plates (302) have an asymmetrical structure or a stepped structure, and an overlapping structure is formed by bending the extension plates (302).

2. The metal protective net with fastener described in claim 1, characterized in that the fastener (2) is formed by bending a cross-shaped base plate (3), the cross-shaped base plate (3) includes a cross-shaped center plate (301) and the extension plates (302) integrally connected to the four ends of the cross-shaped center plate (301), the width of the extension plates (302) is greater than the width of the cross-shaped center plate (301), and the cross-shaped arc-shaped connection portion (201) is formed by bending the cross-shaped center plate (301).

3. The metal protective net with fasteners described in claim 2, characterized in that when the extension plate (302) has an asymmetric structure, it includes a first region (30201) and a second region (30202), the width of the first region (30201) is greater than the width of the second region (30202), and the extension plate (302) is folded so that the first region (30201) covers the outside of the second region (30202) and overlaps with it.

4. The metal protective net with fasteners described in claim 2, characterized in that when the extension plate (302) has a stepped structure, it includes a third region (30203) close to the cross-shaped center plate (301) and a fourth region (30204) far from the cross-shaped center plate (301), the width of the fourth region (30204) is greater than the width of the third region (30203), and the extension plate (302) is folded so that both side edges of the fourth region (30204) cover and overlap each other.

5. 5. The metal protective net with fasteners according to claim 3 or 4, characterized in that the four corners on the inside of the cross-shaped central plate (301) are all provided with arc-shaped chamfers.

6. 5. The metal protective net with fasteners according to claim 3 or 4, characterized in that all four corners of the extension plate (302) are rounded.

7. The metal protective net with fasteners according to claim 3 or 4, characterized in that the material of the cross-shaped base plate (3) includes 304 stainless steel, and the thickness of the cross-shaped base plate (3) is 0.3-0.5 mm.

8. The metal protective net with fastening devices according to claim 3 or 4, characterized in that the meridians (101) and the wefts (102) are both stainless steel wire ropes, the stainless steel wire ropes are formed by twisting together seven stainless steel center threads, and each of the stainless steel center threads is formed by twisting together seven stainless steel fine threads.

9. 9. The metal safety net with fasteners according to claim 8, wherein the material of the stainless steel filaments includes 316 stainless steel, and the diameter of the stainless steel filaments is 0.8-1.0 mm.

10. 5. The metal protection net with fastening devices according to claim 3 or 4, characterized in that the mesh formed by the intersection of the meridians (101) and the parallels (102) is square or rectangular.

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