Safe and efficient scaffold bevel fixing fastener

Abstract

The utility model discloses a safe and efficient scaffold bevel angle fixing fastener, including first petal and second petal, both form the spherical structure through bolt connection, inside is equipped with two 45 degree included angle's clamping groove to hold the steel pipe, the connecting surface adopts spiral shape curved surface, realizes 45 degree progressive torsion, expands steel pipe import angle and reduces stress concentration coefficient, spherical shell eliminates sharp protrusion, promotes construction safety, single bolt penetrates the ball center design, and synchronous locking vertical pole and cross bar, and clamping efficiency improves greatly, first petal and second petal are manufactured through integrated molding process, and are stable and durable, the utility model discloses high installation efficiency, especially suitable for high altitude scaffold operation, the utility model solves traditional fastener installation complicated, stress uneven and potential safety hazard etc.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment technology for building construction, specifically to a safe and efficient scaffolding angle fixing fastener. Background Technology

[0002] In construction, steel pipe coupler scaffolding is widely used due to its flexible assembly and disassembly and wide adaptability. To prevent the swaying of mutually perpendicular scaffolding, a diagonal steel pipe is usually added to form a triangle to increase the stability of the scaffolding. This requires angled fixing couplers to secure the diagonal steel pipe. Traditional angled fixing couplers for scaffolding often use swivel couplers, allowing rotation at any angle, which poses a risk of reduced node stiffness due to loosening. Furthermore, traditional couplers often have right-angled edge designs with sharp protrusions, which can easily cause scratches to construction workers or damage to equipment. Installation also requires adjusting the position of two couplers separately and aligning them with the bolt holes, making the operation cumbersome and time-consuming during high-altitude work. Moreover, the planar connection surface of traditional couplers leads to uneven distribution of bolt preload, and stress concentration can easily occur in the contact area between the clamp and the steel pipe, potentially leading to plastic deformation or breakage after long-term use. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a safe and efficient scaffolding angled fixing fastener, achieving a technological breakthrough through the following innovations: A safe and efficient scaffolding angled fixing fastener includes a first segment and a second segment, which are connected by bolts to form a complete fastener structure. There are two slots at a 45-degree angle between the first segment and the second segment, which match the scaffolding steel pipe. The slots form an open channel when the first segment and the second segment are separated, allowing the scaffolding steel pipe to slide in. The slots clamp the scaffolding steel pipe when the first segment and the second segment are connected.

[0004] The connecting surface between the first and second valve bodies is a plane, and the plane forms a 22.5-degree angle with the central axis of both slots.

[0005] Preferably, the connecting surface between the first and second valves is a spiral curved surface, which gradually changes from the central axis of one of the slots by 45 degrees to the central axis of the other slot.

[0006] The first and second petals are connected in a spherical shape. A bolt through hole is provided through the center of the sphere, and the bolt passes through the bolt through hole to connect the first and second petals.

[0007] The bolt through-hole penetrates the center of the outer spherical surface of the first and second petals. A cylindrical bolt groove is provided at the bolt through-hole on the outer surface of the first petal, and a regular hexagonal prism nut groove is provided at the bolt through-hole on the outer surface of the second petal. The inner diameter of the bolt groove is larger than the outer diameter of the bolt head, and the shape of the nut groove matches the nut. The bolt passes through the bolt through-hole from the first petal and screws into the nut on the nut groove of the second petal.

[0008] Both the first and second valve bodies are integrally formed.

[0009] This utility model discloses a safe and efficient scaffolding angled fixing fastener. The spherical shell formed by the first and second segments eliminates sharp protrusions, reducing scratches during construction. The 45-degree angled groove design enables synchronous locking of the uprights, horizontal bars, and diagonal bars, greatly increasing their stability. A single bolt can generate the effective clamping force of a traditional structure, significantly improving construction efficiency. The upgraded spiral curved surface further reduces the stress concentration coefficient, enhancing stability and durability. The spiral curved surface also expands the steel pipe guide angle and provides self-guiding characteristics for the installation of the two segments, further shortening installation time and solving the bottleneck of high-altitude operation efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram illustrating the usage of a safe and efficient scaffolding angled fixing fastener according to this utility model.

[0011] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0012] Figure 3 This is a schematic diagram of the disassembled structure of Embodiment 1 of this utility model.

[0013] Figure 4 This is a structural schematic diagram of the disassembled state of Embodiment 1 of this utility model from another angle.

[0014] Figure 5 This is a schematic diagram of the disassembled structure of Embodiment 2 of this utility model.

[0015] Figure 6 This is a structural schematic diagram of the split state of Embodiment 2 of this utility model from another angle. Detailed Implementation

[0016] Example 1 like Figure 1-4As shown, a safe and efficient scaffolding angled fixing fastener includes a first petal 1 and a second petal 2, which are integrally formed by metal die casting. The first petal 1 and the second petal 2 are connected by bolts and nuts to form a complete fastener structure. There are two cylindrical slots 3 at a 45-degree angle between the first petal 1 and the second petal 2, which match the scaffolding steel pipe. The slots 3 form an open channel when the first petal 1 and the second petal 2 are separated, allowing the scaffolding steel pipe to slide in. The inner wall of the slots 3 is provided with anti-slip patterns. When the first petal 1 and the second petal 2 are tightly connected, the slots 3 can clamp the scaffolding steel pipe.

[0017] When the first petal 1 and the second petal 2 are connected, they are spherical in shape. A bolt through hole 4 is provided through the center of the sphere, passing through the first petal 1 and the second petal 2. The bolt passes through the bolt through hole 4 from the first petal 1 and is connected to the nut at the end of the second petal 2.

[0018] The bolt through hole 4 penetrates the center of the outer spherical surface of the first petal 1 and the second petal 2. The central axis of the bolt through hole 4 is perpendicular to the contact surface of the first petal 1 and the second petal 2. A cylindrical bolt groove 5 is also provided at the bolt through hole 4 on the outer surface of the first petal 1. A regular hexagonal prism nut groove 6 is also provided at the bolt through hole 4 on the outer surface of the second petal 2. The inner diameter of the bolt groove 5 is larger than the outer diameter of the bolt head. The shape of the nut groove 6 matches the nut.

[0019] The connecting surface between the first valve body 1 and the second valve body 2 is a plane, and the connecting surface forms a 22.5-degree angle with the central axis of each of the two slots 3. The central axis of the bolt through hole 4 is perpendicular to the connecting surface.

[0020] In use, open the first segment 1 and the second segment 2. Insert the first segment 1 between the upright and diagonal brace of the scaffold. Align the upright and diagonal brace with the two 45-degree angled slots 3, and insert the second segment 2 on the opposite side. Place a matching nut in the nut groove 6 of the second segment 2. Thread a bolt through the bolt hole 4 on one side of the first segment 1 and tighten it with the nut. This completes the connection between the upright and diagonal brace. Use the same method to connect the other end of the diagonal brace to a horizontal bar or another upright; the preferred connection point for the diagonal brace is near the intersection of the horizontal bar and the upright.

[0021] The scaffolding cross coupler described in Example 1 adopts a split spherical structure design. The first and second lobes are fastened together with bolts through a planar connection surface to form a complete coupler. Its core innovation lies in the synergistic effect of the double-lobed structure and the two locking slots. The design of the planar connection surface forming a 22.5-degree angle with the central axis of each of the two locking slots generates a uniform radial force during bolt tightening, ensuring the stability of the steel pipe clamping. The spherical shape eliminates the sharp protrusions of traditional couplers, reducing the rate of worker scratches. The differentiated structure of the bolt groove and nut groove enables rapid positioning; only a single bolt is needed for installation, saving 70% of the operation time compared to the traditional four-bolt structure. The anti-slip pattern effectively prevents steel pipe slippage. The planar connection surface of this embodiment has low mold requirements, resulting in lower manufacturing costs. Example 2 Example 2 is an optimization based on Example 1, such as... Figure 5 , Figure 6 As shown, the connecting surface between the first valve body 1 and the second valve body 2 is a spiral curved surface 7. The spiral curved surface 7 gradually changes from the central axis of one of the slots 3 by 45 degrees to the central axis of another slot 3, that is, it transitions from the central axis of one slot 3 to the central axis of another slot 3 at a 45-degree angle to it in a spiral scanning manner.

[0022] Example 2 improves upon Example 1 by upgrading the planar connection surface to a 45-degree gradient spiral surface. This spiral surface continuously transitions from one slot axis to another, forming a three-dimensional spatial curved surface structure. This design increases the steel pipe inlet angle when the first lobe 1 and the second lobe 2 are opened, further improving installation efficiency. The mechanical properties of the spiral surface alter the stress distribution pattern, reducing the maximum stress value and extending fatigue life. The self-guiding properties of the spiral surface allow the two lobes to automatically slide into alignment under gravity, improving high-altitude operation efficiency. The tangential component force generated by the spiral surface significantly enhances the tightening effect of a single bolt. While the spiral surface 7 in this example places higher demands on the mold and has higher manufacturing costs, the improved installation efficiency keeps the overall project cost unchanged or even reduces it.

Claims

1. A safe and efficient scaffolding angled fixing fastener, characterized in that, It includes a first petal (1) and a second petal (2), which are connected by bolts to form a complete fastener structure; there are two slots (3) at a 45-degree angle between the first petal (1) and the second petal (2) to match the scaffold steel pipe. The slots (3) form an open channel when the first petal (1) and the second petal (2) are separated, allowing the scaffold steel pipe to slide in. The slots (3) clamp the scaffold steel pipe when the first petal (1) and the second petal (2) are connected.

2. The safe and efficient scaffolding angle fixing fastener according to claim 1, characterized in that, The connecting surface of the first valve body (1) and the second valve body (2) is a plane, and the plane forms an angle of 22.5 degrees with the central axis of the two slots (3).

3. The safe and efficient scaffolding angle fixing fastener according to claim 1, characterized in that, The connecting surface of the first valve body (1) and the second valve body (2) is a spiral curved surface (7), which gradually changes from the central axis of one of the slots (3) by 45 degrees to the central axis of the other slot (3).

4. A safe and efficient scaffolding angle fixing fastener according to any one of claims 1-3, characterized in that, When the first valve (1) and the second valve (2) are connected, they are spherical in shape. A bolt through hole (4) is provided through the center of the sphere, which passes through the first valve (1) and the second valve (2). The bolt passes through the bolt through hole (4) to connect the first valve (1) and the second valve (2).

5. A safe and efficient scaffolding angle fixing fastener according to claim 4, characterized in that, The bolt through hole (4) passes through the center of the outer spherical surface of the first petal (1) and the second petal (2). A cylindrical bolt groove (5) is also provided at the bolt through hole (4) on the outer surface of the first petal (1), and a regular hexagonal prism nut groove (6) is also provided at the bolt through hole (4) on the outer surface of the second petal (2). The inner diameter of the bolt groove (5) is larger than the outer diameter of the bolt head, and the shape of the nut groove (6) matches the nut. The bolt passes through the bolt through hole (4) from the first petal (1) and screws into the nut on the nut groove (6) of the second petal (2).

6. A safe and efficient scaffolding angle fixing fastener according to any one of claims 1-3, characterized in that, Both the first valve body (1) and the second valve body (2) are integrally formed.

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