Safety net hanging device

Abstract

The invention discloses a safety net suspension device which is used for suspending a safety net on a steel beam flange, and the suspension device comprises a fixed seat which is provided with an opening accommodating part which is suitable for being clamped from one side of the steel beam flange and at least partially covers the steel beam flange, and a connecting part which extends from the opening accommodating part; the fastening mechanism comprises an adjustable force application part, and the force application part acts on one area of the opening containing part and operably applies adjustable pressure to the steel beam flange in the opening containing part, so that the steel beam flange abuts against at least one inner surface of the opening containing part. According to the invention, rapid clamping and partial coating of the steel beam flange are realized through the opening accommodating part of the fixed seat, and adjustable pressure is applied to the steel beam flange in the opening accommodating part by using an adjustable force application part in the fastening mechanism, so that the steel beam flange is firmly clamped and propped against the inner surface of the opening accommodating part; finally, the safety net is hung through the safety net fixing pieces connected to the connecting parts.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a safety net hanging device. Background Art

[0002] In modern building construction, steel structures are widely used due to their high strength and fast construction speed. During the installation of high-rise steel structures, safety nets must be installed under the steel beams to prevent falling objects from harming construction workers and equipment below and to ensure construction safety.

[0003] However, the currently commonly used safety net suspension devices under steel beams still have many shortcomings in actual applications. For example, some temporary suspension methods, such as the use of wire bundling and simple welding hanging points, are not only cumbersome, time-consuming and labor-intensive to install and disassemble, affecting construction efficiency, but also difficult to fully guarantee the reliability and stability of their connections. They are prone to loosening or even falling off under wind, vibration or accidental impact, posing a safety hazard. In addition, the structural design of some existing suspension devices is relatively fixed, making it difficult to adapt to steel beams of different specifications and different flange thicknesses, resulting in poor versatility. It is necessary to prepare multiple models of devices for different projects, increasing management and use costs. What's more, certain fixing methods (such as direct welding on the steel beam) may cause damage to the main structure of the steel beam, affecting its mechanical properties or requiring later repair treatment.

[0004] Therefore, this field urgently needs a kind of safety net suspension device under steel beam that can overcome the above-mentioned defects. Summary of the Invention

[0005] The main purpose of the present invention is to provide a safety net hanging device to solve the above technical problems.

[0006] The present invention provides a safety net hanging device for hanging a safety net on a steel beam flange, the safety net hanging device comprising: a fixing seat, the fixing seat having an open accommodating portion suitable for being inserted into and at least partially covering the steel beam flange from one side of the steel beam flange, and a connecting portion extending from the open accommodating portion; a fastening mechanism, the fastening mechanism comprising an adjustable force-applying component, the force-applying component acting on an area of ​​the open accommodating portion and operably applying an adjustable pressure to the steel beam flange in the open accommodating portion so that the steel beam flange rests on at least one inner surface of the open accommodating portion; a safety net fixing member, the safety net fixing member being connected to the connecting portion.

[0007] The opening accommodating portion has a first inner surface and a second inner surface opposite to each other, and the steel beam flange in the opening accommodating portion abuts between the first inner surface of the opening accommodating portion and the force applying component.

[0008] The second inner surface of the opening accommodating portion is provided with a through hole, and the force-applying component is passed through the through hole to apply adjustable pressure to the steel beam flange in the opening accommodating portion.

[0009] Wherein, the force-applying component is a cam mechanism, which includes a rotating shaft passing through the through hole and a cam member fixedly connected to the rotating shaft and located in the opening accommodating portion. The cam member has a pressing surface for pressing against the steel beam flange. By rotating the rotating shaft, the pressing surface of the cam member applies pressure to the steel beam flange.

[0010] Wherein, the force-applying component is at least one bolt, which is passed through the through hole and can apply adjustable pressure to the steel beam flange in the opening accommodating portion by being tightened.

[0011] Wherein, the fastening mechanism further includes a first nut and / or a washer matched with the bolt.

[0012] Wherein, the connecting portion is arranged at the bottom of the opening accommodating portion, a connecting hole is provided on the connecting portion, and the safety net fixing piece is passed through the connecting hole.

[0013] The connecting portion is a hollow structure having a first wall surface close to the opening accommodating portion and a second wall surface away from the opening accommodating portion, and the connecting hole is provided on the second wall surface.

[0014] Wherein, the safety net fixing member is at least one hook, and the hook is fixedly connected to the connecting hole via a detachable anti-slip structure.

[0015] Wherein, the hook includes a threaded rod and a hook body, the anti-slip structure includes the threaded rod and a detachable locking piece, the threaded rod is passed through the connecting hole, and the locking piece is arranged on the threaded rod.

[0016] Beneficial technical effects of the present invention:

[0017] The present invention realizes the rapid snap-in and partial covering of the steel beam flange through the open accommodating portion of the fixing seat, and uses the adjustable force-applying component in the fastening mechanism to apply adjustable pressure to the steel beam flange in the open accommodating portion, so that it is firmly clamped and rests against the inner surface of the open accommodating portion, and finally the safety net is suspended by the safety net fixing part connected to the connecting portion. This convenient snap-in and adjustable fastening method greatly simplifies the installation and disassembly process, significantly improves the construction efficiency, and overcomes the problem of cumbersome and time-consuming installation of traditional methods; secondly, the powerful mechanical clamping force formed by the adjustable pressure ensures the ultimate stability and reliability of the connection between the device and the steel beam flange, and can effectively resist vibration, wind and accidental impact during the construction process, avoiding the risk of loosening due to loose connection, thereby fundamentally improving construction safety and solving the problem of poor connection reliability and stability and easy safety hazards in the background technology; furthermore, the adjustability of the fastening mechanism gives The device is endowed with excellent versatility, enabling it to adapt to steel beam flanges of different thicknesses and specifications, reducing the need to prepare multiple models of devices for different projects, thereby reducing spare parts management and usage costs, and making up for the defect of poor versatility of existing devices due to structural fixation; finally, its purely mechanical clamping fixing principle realizes non-destructive installation of steel beam flanges, avoiding permanent damage to the main structure of the steel beam caused by welding, drilling, etc., completely protecting the structural integrity and mechanical properties of the steel beam, avoiding the trouble and cost of later repairs, and solving the problem of damage to the steel beam by certain fixing methods in the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the use status of the safety net suspension device provided by an embodiment of the present invention;

[0020] Figure 2 A schematic cross-sectional view of a fixing seat in a safety net suspension device provided by an embodiment of the present invention;

[0021] Figure 3 A side view of a force-applying component in a safety net suspension device provided by an embodiment of the present invention;

[0022] Figure 4 A side view of another force-applying component in the safety net suspension device provided by an embodiment of the present invention;

[0023] Figure 5 A side view of a safety net fixing member in a safety net hanging device provided by an embodiment of the present invention.

[0024] Description of reference numerals:

[0025] In the figure: 10-fixing seat, 11-opening accommodating portion, 111-first inner surface, 112-second inner surface, 113-through hole, 12-connecting portion, 121-connecting hole, 122-first wall surface, 123-second wall surface, 20-fastening mechanism, 211-bolt, 212-first nut, 213-washer, 221-rotating shaft, 222-cam member, 31-hook, 311-threaded rod portion, 312-hook body portion, 321-second nut, 40-steel beam flange. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0028] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0030] Please also refer to Figure 1-Figure 5. The safety net hanging device provided by the embodiment of the present invention is used to conveniently and firmly hang the safety net under the flange of the steel beam during construction, especially during steel structure installation operations, to prevent falling objects from high altitude from causing harm to personnel or equipment below, thereby improving construction safety. The safety net hanging device includes: a fixing seat 10, the fixing seat 10 has an open accommodating portion 11 suitable for being inserted into and at least partially covering the steel beam flange 40 from one side of the steel beam flange 40, and a connecting portion 12 extending from the open accommodating portion 11; a fastening mechanism 20, the fastening mechanism 20 includes an adjustable force-applying component, the force-applying component acts on an area of ​​the open accommodating portion 11, and is operable to apply an adjustable pressure to the steel beam flange 40 in the open accommodating portion 11, so that the steel beam flange 40 rests on at least one inner surface of the open accommodating portion 11; a safety net fixing member, the safety net fixing member is connected to the connecting portion 12.

[0031] In this embodiment, the safety net hanging device mainly includes a fixing seat 10, a fastening mechanism 20 and a safety net fixing piece.

[0032] The fixing seat 10 is the main structure of the entire device, and its design is intended to enable rapid initial positioning and clamping with the steel beam flange 40. Specifically, the fixing seat 10 has an open accommodating portion 11. The shape and size of the open accommodating portion 11 are designed to be suitable for convenient insertion from one side of the steel beam flange 40, and to be able to at least partially cover or accommodate a portion of the steel beam flange 40. This design allows the installer to preliminarily hang the fixing seat 10 on the steel beam flange 40 without complicated alignment or measurement, which provides convenience for subsequent tightening operations. A connecting portion 12 also extends from the open accommodating portion 11. The connecting portion 12 is used for subsequent connection to the safety net fixings and is the part that bears the tension of the safety net.

[0033] The fastening mechanism 20 is used to securely lock the initially positioned fixing seat 10 onto the steel beam flange 40. The force-applying component is disposed on an area of ​​the opening receiving portion 11 of the fixing seat 10, and its design allows its position or force to be adjustable. In actual operation, after the opening receiving portion 11 of the fixing seat 10 is inserted into the steel beam flange 40, the operator can adjust the force-applying component so that it applies a continuous and controllable pressure to the steel beam flange 40 contained within the opening receiving portion 11. The magnitude of this pressure can be controlled, and its effect is to securely abut the steel beam flange 40 against at least one inner surface of the opening receiving portion 11. Through this abutment and pressure, the fixing seat 10 can be securely mounted on the steel beam flange 40 and is not easily displaced or loosened even when subjected to external forces such as wind or the weight of a safety net.

[0034] The safety net fixture is a component used to directly suspend the safety net. It connects to the connection portion 12 of the mounting base 10. In its most basic form, it can be a structure that provides a hanging point for the rope or edge of the safety net. With this safety net fixture, the safety net can be conveniently hung below the device.

[0035] In this embodiment, by providing an open accommodating portion 11, rapid positioning with "one click in place" is achieved. The operator does not need to perform complicated bundling or alignment operations, and can complete the initial installation by simply snapping the fixing seat 10 onto the flange. Subsequently, the final tightening can be completed by simply operating the adjustable force-applying component. The entire process does not require special tools and is simple to perform, which greatly shortens the installation time of a single suspension point and significantly improves the overall construction efficiency. At the same time, the structure of the opening accommodating portion 11 partially covering the steel beam flange 40 itself provides good anti-torsion and anti-side slip capabilities. More importantly, the fastening mechanism 20 generates a strong clamping force between the fixing seat 10 and the steel beam flange 40 by applying an active, continuous and adjustable pressure. This mechanical locking method based on positive pressure is far more stable and reliable than the tension fixation of wire binding or the gravity fixation of a simple hook. It can effectively resist vibration, wind or accidental impact during construction, ensuring the long-term stability of the device.

[0036] Since the force-applying component in the fastening mechanism 20 is adjustable. This means that the force-applying component has a certain adjustment stroke. No matter how the thickness of the steel beam flange 40 changes within a certain range, the force-applying component can effectively apply pressure by adjusting its action position to achieve a firm lock. Therefore, the same suspension device can be applied to steel beams of various thicknesses and specifications, with good versatility, reducing the types of spare parts and management costs of the construction unit. Compared with the fixing method that requires welding or drilling on the steel beam, the installation process of this embodiment is completely non-destructive. The entire device is connected to the steel beam through mechanical clamping force, and is very convenient to install and disassemble. It will not leave any permanent damage or marks on the steel beam, and completely protects the structural integrity and surface coating of the steel beam.

[0037] In summary, this embodiment provides a safety net hanging solution that is easy to install, has a stable connection, is highly versatile, and does not damage the steel beam through the coordinated cooperation of the opening accommodating portion 11 of the fixing seat 10, the adjustable force-applying component of the fastening mechanism 20, and the safety net fixing member.

[0038] In this embodiment, the opening accommodating portion 11 is formed into a side opening profile, roughly in a "C" shape, so that during installation, the operator can easily "clip" or "slip" the opening accommodating portion 11 directly onto the steel beam flange 40 from the side and bottom of the steel beam flange 40.

[0039] In one embodiment, the open accommodating portion 11 has a first inner surface 111 and a second inner surface 112 opposite to each other, and the steel beam flange 40 in the open accommodating portion 11 abuts between the first inner surface 111 of the open accommodating portion 11 and the force applying component.

[0040] In this embodiment, the open accommodating portion 11 of the fixing base 10 is designed to have opposing first and second inner surfaces 111, 112. These two inner surfaces together define a space for accommodating the steel beam flange 40. When the device is installed on the steel beam flange 40, the steel beam flange 40 within the open accommodating portion 11, under the action of the fastening mechanism 20, abuts between the first inner surface 111 of the open accommodating portion 11 and the force-applying component.

[0041] In more detail, it can be understood that one surface of the steel beam flange 40, such as the lower surface of the lower flange, will contact and rest against the first inner surface 111 of the opening accommodating portion 11, while the opposite surface of the steel beam flange 40, such as the upper surface of the lower flange, will be subjected to pressure applied by the force-applying component. In this way, the steel beam flange 40 is effectively pressed between the first inner surface 111 and the force-applying component, forming a stable fixation. This clear force relationship helps to ensure the effective transmission and distribution of the fastening force, thereby enhancing the stability and reliability of the entire device. The first inner surface 111 can be the inner wall of the lower part of the opening accommodating portion 11, and the force-applying component acts on the lower middle area of ​​the opening accommodating portion 11, applying downward pressure to the steel beam flange 40 placed therebetween, so that it is close to the first inner surface 111.

[0042] In one embodiment, a through hole 113 is provided on the second inner surface 112 of the open accommodating portion 11 , and a force-applying member is passed through the through hole 113 to apply an adjustable pressure to the steel beam flange 40 in the open accommodating portion 11 .

[0043] In this embodiment, the second inner surface 112 of the open accommodating portion 11 is a wall surface that is opposite to the first inner surface 111 and together forms the accommodating space. That is, the second inner surface 112 is the upper wall surface of the open accommodating portion 11 and is provided with a through hole 113 therethrough. A portion of the force-applying component of the fastening mechanism 20 is disposed through the through hole 113.

[0044] With this design, the force-applying member can be operated from outside the fixing base 10, and its applied force can be effectively transmitted to the interior of the open accommodating portion 11 through the through-hole 113, directly acting on the steel beam flange 40. This design of penetrating through-hole 113 facilitates precise and reliable fastening. Furthermore, the provision of through-hole 113 also provides a reference for positioning the force-applying member.

[0045] In one embodiment, the force-applying component is a cam mechanism, which includes a rotating shaft 221 passing through the through hole 113 and a cam member 222 fixedly connected to the rotating shaft 221 and located in the opening accommodating portion 11. The cam member 222 has a pressing surface for pressing against the steel beam flange 40. By rotating the rotating shaft 221, the pressing surface of the cam member 222 applies pressure to the steel beam flange 40.

[0046] In this embodiment, the force-applying component is a cam mechanism. The cam mechanism includes a rotating shaft 221 that can rotate about its axis and a cam member 222 fixed to the lower end of the rotating shaft 221. The rotating shaft 221 is inserted into the through hole 113, and its upper end extends to the outside of the fixed base 10 for easy operation. The rotating shaft 221 and the through hole 113 can be rotatably connected via a bearing. The cam member 222 has a pressing surface (not separately marked in the drawings) for pressing against the upper surface of the steel beam flange 40. In a specific implementation, the pressing surface is a cam profile surface, which is a curved surface whose effective height (or effective thickness) changes along the rotation direction of the rotating shaft 221.

[0047] By rotating the rotating shaft 221, the pressing surface of the cam member 222, i.e., the cam profile, acts on and slides relative to the upper surface of the steel beam flange 40. Its varying height converts the rotational motion into vertical thrust, thereby applying adjustable pressure to the steel beam flange 40, securing it between the first inner surface 111 of the open accommodating portion 11 and the cam member 222. Specifically, the pressing surface is not flat, but rather has a profile with uneven radial distance or axial thickness as viewed from the rotation center of the rotating shaft 221. When rotating the rotating shaft 221, the thinner portion of the pressing surface of the cam member 222 can be selectively aligned with the steel beam flange 40, applying little or no pressure, facilitating the entire device's engagement with the steel beam flange 40. As the rotating shaft 221 is further rotated, the thicker portion of the pressing surface of the cam member 222 gradually acts on the upper portion of the steel beam flange 40. Since this portion is thicker, it presses the upper surface of the steel beam flange 40 downward, thereby pressing the steel beam flange 40 tightly against the first inner surface 111 of the open accommodating portion 11 to achieve fastening.

[0048] In one embodiment, the force-applying component is at least one bolt 211 , which is passed through the through hole 113 and can apply adjustable pressure to the steel beam flange 40 in the open accommodating portion 11 by being tightened.

[0049] In this embodiment, the force-applying component of the fastening mechanism 20 is specifically at least one bolt 211. The rod of the bolt 211 is vertically inserted into the through hole 113. By rotating the bolt 211, an adjustable pressure can be conveniently applied to the steel beam flange 40 in the open accommodating portion 11.

[0050] Bolt 211 is simple in structure, low in cost, and easy to obtain and replace. The self-locking nature of the threads provides a stable and reliable tightening force. Operators can easily tighten or loosen bolt 211 using standard tools (such as a wrench), enabling precise pressure adjustment and rapid installation and removal of the device. The head of bolt 211 or its mating washer 213 directly or indirectly presses against the surface of the steel beam flange 40. The mechanical advantage of the threads converts rotational torque into strong axial pressure, achieving a secure fixation.

[0051] In one embodiment, the fastening mechanism 20 further includes a first nut 212 and / or a washer 213 that cooperate with the bolt 211 .

[0052] In this embodiment, the shank of the bolt 211 is inserted into the through-hole 113 of the second inner surface 112. A first nut 212 is screwed onto the bolt 211 outside the fixing base 10, i.e., on the upper outer portion of the open accommodating portion 11. By rotating the first nut 212, it moves along the axis of the bolt 211 and abuts against the upper outer portion of the open accommodating portion 11, thereby applying force to the bolt 211. This causes the other end of the bolt 211, i.e., the end located inside the open accommodating portion 11 and facing the steel beam flange 40, to apply pressure to the steel beam flange 40.

[0053] The gasket 213 is arranged between the other end of the bolt 211 and the steel beam flange 40. The gasket 213 directly contacts the steel beam flange 40, increasing the contact area between the bolt 211 and the steel beam flange 40, which helps to transfer the pressure to the surface of the steel beam flange 40 more evenly.

[0054] In one embodiment, the connecting portion 12 is disposed at the bottom of the open accommodating portion 11 . A connecting hole 121 is provided on the connecting portion 12 , and the safety net fixing piece is passed through the connecting hole 121 .

[0055] In this embodiment, when the anchor 10 is mounted on the steel beam flange 40, the open accommodating portion 11 is open laterally to engage the steel beam flange 40. Therefore, its bottom naturally faces downward, precisely where the safety net should be hung. Positioning the connecting portion 12 at the bottom of the open accommodating portion 11 meets the practical requirements for suspending the safety net, allowing it to be easily lowered and deployed.

[0056] Furthermore, the connecting portion 12 is provided with a connection hole 121. This connection hole 121 provides a clear mounting interface for the safety net fixing member. The safety net fixing member is inserted through the connection hole 121. This insertion ensures a secure connection between the safety net fixing member and the connecting portion 12, thereby being able to withstand the weight of the safety net itself and the impact of any falling objects.

[0057] In one embodiment, the connecting portion 12 is a hollow structure having a first wall 122 close to the opening accommodating portion 11 and a second wall 123 away from the opening accommodating portion 11 . The connecting hole 121 is disposed on the second wall 123 .

[0058] In this embodiment, the connecting portion 12 is a hollow structure. For example, it can be a square or rectangular tubular structure, or a box-like structure with an internal cavity formed by bending a sheet material. Compared to a solid structure, this hollow structure can reduce the overall weight of the device while ensuring sufficient strength, while also leaving space for the installation of safety net fixings.

[0059] The hollow structure has a first wall surface 122 , ie, an upper wall surface, close to the opening accommodating portion 11 , and a second wall surface 123 , ie, a lower wall surface, away from the opening accommodating portion 11 . The aforementioned connecting hole 121 is disposed on the second wall surface 123 .

[0060] When the safety net fastener passes through the connection hole 121 provided in the second wall 123, its force point is more biased downward, which facilitates the hanging of the safety net. Furthermore, certain parts of the safety net fastener, such as the screw head or other locking mechanisms, require space or support. The interior of the hollow structure and the second wall 123 can provide such conditions. For example, the rod of the safety net fastener can pass through the connection hole 121 in the second wall 123, with its end extending into the interior of the hollow structure for fixation, thus forming a more stable connection.

[0061] In one embodiment, the safety net fixing member is at least one hook 31 , and the hook 31 is fixedly connected to the connecting hole 121 via a detachable anti-slip structure.

[0062] In this embodiment, the safety net fixing member is specifically at least one hook 31. The hook 31 is the most commonly used and most directly used component for hanging a net, and its curved hook body 312 can conveniently hook the edge rope or mesh of the safety net.

[0063] To ensure the reliable connection between hook 31 and connection hole 121 and prevent it from accidentally falling off due to vibration or other reasons during use, hook 31 is fixed to connection hole 121 via a detachable anti-slip structure. This detachable design facilitates installation and removal of the device, as well as replacement or adjustment of hook 31. The anti-slip structure ensures that hook 31 will not slip out of connection hole 121 even when subjected to large tensile forces or dynamic loads.

[0064] In one embodiment, the hook 31 includes a threaded rod 311 and a hook body 312 . The anti-slip structure includes the threaded rod 311 and a detachable locking member. The threaded rod 311 is inserted into the connecting hole 121 , and the locking member is disposed on the threaded rod 311 .

[0065] In this embodiment, the threaded rod portion 311 is the portion that connects the hook 31 to the connecting portion 12 of the fixing base 10, and its outer surface is processed with threads. The hook body portion 312 is the curved portion used to directly hang the safety net.

[0066] The specific implementation of the anti-slip structure includes a threaded rod 311 of the hook 31 and a detachable locking member. During installation, the threaded rod 311 of the hook 31 is inserted into the connecting hole 121, and the inner wall of the connecting hole 121 may also have a matching thread.

[0067] The locking member cooperates with the threaded rod 311. For example, the locking member can be one or more second nuts 321. After the threaded rod 311 passes through the connecting hole 121, the hook 31 can be firmly fixed to the connecting portion 12 by tightening one or more second nuts 321 on the threaded rod 311, thereby effectively preventing the threaded rod 311 from falling out of the connecting hole 121. If two second nuts 321 are used and locked to each other, a better anti-loosening effect can be achieved, further improving the reliability of the connection. This anti-slip structure based on threads and locking members not only has a firm connection and a good anti-slip effect, but is also easy to assemble and disassemble, meeting the requirements of detachability.

[0068] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A safety net hanging device for hanging a safety net on a steel beam flange, characterized in that: The safety net hanging device comprises: A fixing seat, the fixing seat having an opening accommodating portion adapted to be inserted into and at least partially cover the steel beam flange from one side of the steel beam flange, and a connecting portion extending from the opening accommodating portion; a fastening mechanism, the fastening mechanism comprising an adjustable force-applying member, the force-applying member acting on an area of ​​the open accommodating portion and operable to apply an adjustable pressure to the steel beam flange within the open accommodating portion, causing the steel beam flange to abut against at least one inner surface of the open accommodating portion; A safety net fixing piece is connected to the connecting portion.

2. The safety net suspension device according to claim 1, characterized in that: The opening accommodating portion has a first inner surface and a second inner surface opposite to each other, and the steel beam flange in the opening accommodating portion abuts between the first inner surface of the opening accommodating portion and the force applying component.

3. The safety net suspension device according to claim 2, characterized in that: A through hole is provided on the second inner surface of the opening accommodating portion, and the force-applying component is passed through the through hole to apply adjustable pressure to the steel beam flange in the opening accommodating portion.

4. The safety net suspension device according to claim 3, characterized in that: The force-applying component is a cam mechanism, which includes a rotating shaft passing through the through hole and a cam member fixedly connected to the rotating shaft and located in the opening accommodating portion. The cam member has a pressing surface for pressing against the steel beam flange. By rotating the rotating shaft, the pressing surface of the cam member applies pressure to the steel beam flange.

5. The safety net suspension device according to claim 3, characterized in that: The force-applying component is at least one bolt, which is passed through the through hole and can apply adjustable pressure to the steel beam flange in the opening accommodating portion by being tightened.

6. The safety net suspension device according to claim 5, characterized in that: The fastening mechanism further includes a first nut and / or a washer matched with the bolt.

7. The safety net suspension device according to claim 1, characterized in that: The connecting portion is arranged at the bottom of the opening accommodating portion, a connecting hole is provided on the connecting portion, and the safety net fixing piece is passed through the connecting hole.

8. The safety net suspension device according to claim 7, characterized in that: The connecting portion is a hollow structure having a first wall surface close to the opening accommodating portion and a second wall surface away from the opening accommodating portion. The connecting hole is provided on the second wall surface.

9. The safety net suspension device according to claim 8, characterized in that: The safety net fixing member is at least one hook, and the hook is fixedly connected to the connecting hole via a detachable anti-slip structure.

10. The safety net suspension device according to claim 9, characterized in that: The hook includes a threaded rod and a hook body, and the anti-slip structure includes the threaded rod and a detachable locking piece. The threaded rod is passed through the connecting hole, and the locking piece is arranged on the threaded rod.

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