Outside hex flange head cap screw

Abstract

The utility model discloses a kind of outer hexagonal flange wire lifting screws, it includes link rope, outer hexagonal head and the stud being connected with the outer hexagonal head, the outer hexagonal head is formed flange by increasing radially near the stud side, the stud is equipped with baffle near the outer hexagonal head one end, annular rope groove is formed between the baffle and the flange, one end of the link rope is connected on the annular rope groove, and the other end is equipped with lifting ring. The utility model is reasonable in structure design, when installing, just use spanner to tighten outer hexagonal head once, installation can be completed, overcome the defect of traditional need twice height operation, installation is completed in one step, greatly improve aerial work efficiency;Moreover, link rope can freely slide in rope groove and self-adapting load angle change eliminates torque, effectively avoid link rope distortion or cause stud loosening, ensure firm installation, use safely.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, specifically to an external hexagonal flange suspension screw. Background Technology

[0002] In stage lighting, exhibition stands, outdoor billboards, and various engineering projects that require hanging or hoisting, a combination of suspension bolts (also known as eye bolts or hoisting bolts) and steel wire ropes is commonly used to fix the loads such as lamps and hangers to the ceiling, steel beams, or other load-bearing components.

[0003] For example, the utility model disclosed in announcement number "CN222185380U" entitled "An Easy-to-Install Eye Bolt" is an easy-to-install eye bolt, which includes a bolt body and an eye bolt body. The top of the bolt body has a connector, the outer periphery of which has an external thread structure, and the top of the connector has a slotted or Phillips head. The eye bolt body includes a ring and a connecting cap. The ring is fixed to the top of the connecting cap, and the bottom of the connecting cap has an inner cavity that screws into the connector. The inner cavity has an internal thread structure that mates with the external thread structure. This eye bolt design makes the bolt body and eye bolt body detachable. During installation, the bolt body must first be screwed into the designated position with a screwdriver, and then the eye bolt body is connected and fixed to the bolt body through the thread structure to complete the installation of the eye bolt. The entire disassembly and assembly process is cumbersome, requiring two operations in high-altitude work, which is time-consuming and labor-intensive. Moreover, thread alignment is difficult, resulting in low construction efficiency.

[0004] Furthermore, after installation, the lifting ring body and the screw body are rigidly connected once locked together. The lifting ring body cannot be adjusted in angle. When the load is deflected by wind or vibration, the lifting ring cannot rotate adaptively, causing the lifting rope to twist or even break. Alternatively, when the lifting ring is rotated by lateral force, it will directly transmit torque to the screw body, causing the entire assembly to loosen or even fall off, posing a safety hazard. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this utility model is to provide an external hexagonal flange lifting bolt that has a reasonable structural design, is easy to install, and is securely hoisted.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A type of external hexagonal flange suspension screw includes a connecting rope, an external hexagonal head, and a stud connected to the external hexagonal head. The external hexagonal head radially enlarges to form a flange on the side near the stud. A retaining plate is provided at one end of the stud near the external hexagonal head. An annular rope groove is formed between the retaining plate and the flange. One end of the connecting rope is connected to the annular rope groove, and the other end is provided with a lifting ring.

[0008] As a preferred embodiment of this utility model, the outer diameter of the flange gradually decreases at the end near the external hexagonal head, and the other end of the flange is provided with an arc surface, which makes it aesthetically pleasing.

[0009] In a preferred embodiment of this invention, the bottom surface of the annular rope groove is U-shaped. The U-shaped surface matches the bending radius of the connecting rope, significantly reducing bending fatigue and extending its service life.

[0010] In a preferred embodiment of this invention, the end of the stud furthest from the external hexagonal head is a smooth surface with a gradually decreasing outer diameter, forming a guide portion. When inserting into a pre-embedded nut or through hole, the guide portion first aligns, reducing thread damage and improving the success rate of alignment on the first attempt. Especially in situations at height or with limited visibility, the screw can be quickly inserted into the hole with one hand, further shortening installation time.

[0011] As a preferred embodiment of this utility model, one end of the connecting rope passes through the rivet tube, then winds around the annular rope groove and is inserted into the rivet tube for riveting connection, resulting in a firm connection.

[0012] As a preferred embodiment of this utility model, the stud and the external hexagonal head are integrated into a single connection structure, which provides a firm connection, strong resistance to torsion, resistance to breakage, and good structural stability.

[0013] The beneficial effects of this utility model are as follows: The structure of this utility model is reasonably designed, integrating the external hexagonal head and the stud. A flange is radially added to the root of the external hexagonal head, and a retaining plate is set on the stud adjacent to the external hexagonal head, naturally forming an annular rope groove between the two. One end of the connecting rope is fixed to the rope groove, and the other end has a built-in lifting ring. Installation can be completed by simply tightening the external hexagonal head with a wrench, overcoming the shortcomings of traditional methods that require two separate height operations. Installation is completed in one step, significantly improving the efficiency of high-altitude operations. Furthermore, the connecting rope can slide freely circumferentially within the rope groove and adapt to changes in load angle to eliminate torque, effectively preventing rope twisting or stud loosening, ensuring a secure installation and safe use.

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model. Detailed Implementation

[0016] See Figure 1 This embodiment provides an external hexagonal flange suspension screw, which includes an external hexagonal head 1, a stud 2, a connecting rope 3, and a lifting eye 4.

[0017] The external hexagonal head 1 and the stud 2 are connected, preferably as a single integrated structure. This structure can be formed from a single piece of material through forging, turning, or other processes, without welding, bonding, or assembly joints. This ensures a strong connection, reduces the risk of breakage, and allows the overall structure to withstand greater loads and torques. Preferably, the end of the stud 2 furthest from the external hexagonal head 1 has a smooth surface and a gradually decreasing outer diameter, forming a guide portion 21. The taper of the guide portion 21 is preferably 5 degrees. When inserting a pre-embedded nut or through hole, the guide portion 21 first aligns, reducing thread damage and improving the success rate of alignment on the first attempt. Especially in situations at height or with limited visibility, the screw can be quickly inserted into the hole with one hand, further shortening installation time.

[0018] The external hexagon head 1 increases radially on the side near the stud 2 to form a flange 5. Preferably, the outer diameter of the flange 5 gradually decreases at the end near the external hexagon head 1, and the other end of the flange 5 is provided with an arc surface to avoid sharp corners from injuring objects or people, and also to improve its appearance.

[0019] The stud 2 has a retaining plate 6 at one end near the external hexagonal head 1. An annular rope groove 7 is formed between the retaining plate 6 and the flange 5. Preferably, the bottom surface of the annular rope groove 7 is U-shaped. The U-shaped curved surface matches the bending radius of the connecting rope 3, which greatly reduces the bending fatigue of the connecting rope 3 and extends its service life.

[0020] One end of the connecting rope 3 is connected to the annular rope groove 7. Specifically, one end of the connecting rope 3 passes through the rivet tube, then winds around the annular rope groove 7 and is inserted into the rivet tube 8 for riveting connection. This riveting connection method results in a strong connection, small size, and simple appearance.

[0021] The other end of the connecting rope 3 is provided with a lifting ring 4. Specifically, the lifting ring 4 includes an annular portion and a riveting portion connected to the annular portion. The other end of the connecting rope 3 is inserted into the riveting hole of the riveting portion and riveted to achieve the purpose of connection.

[0022] During installation, the guide part 21 of the stud 2 allows for easy and quick alignment and insertion of the pre-embedded nut or through hole, followed by tightening with a wrench to complete the installation. Furthermore, the connecting rope 3 can rotate freely 360° within the rope groove during installation, preventing interference with construction.

[0023] Preferably, multiple helical teeth are provided symmetrically in a circle on the surface of the baffle 6 facing the stud 2. The tips of the helical teeth face the same direction as the thread of the stud 2. When tightened, the surface of the baffle 6 presses against the surface of the object, so that the helical teeth are tightly engaged with the surface of the object. It is not easy for them to loosen due to vibration, and the anti-slip effect is good and the stability is high.

[0024] After installation, the connecting rope 3 can slide freely in the rope groove and adapt to changes in load angle to eliminate torque, effectively preventing the connecting rope 3 from twisting or causing the stud 2 to loosen, ensuring a firm installation and high safety in use.

[0025] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. As described in the above embodiments of this utility model, other screws obtained using the same or similar structures are all within the protection scope of this utility model.

Claims

1. A type of external hexagonal flange suspension bolt, comprising an external hexagonal head and a stud connected to the external hexagonal head, characterized in that, It also includes a connecting rope, the outer hexagonal head radially enlarges to form a flange near the stud, the stud is provided with a baffle at one end near the outer hexagonal head, an annular rope groove is formed between the baffle and the flange, one end of the connecting rope is connected to the annular rope groove, and the other end is provided with a lifting ring.

2. The external hexagonal flange suspension bolt according to claim 1, characterized in that: The outer diameter of the flange gradually decreases at one end near the external hexagonal head, and the other end of the flange has an arc surface.

3. The external hexagonal flange suspension bolt according to claim 1, characterized in that: The bottom surface of the annular rope groove is U-shaped.

4. The external hexagonal flange suspension bolt according to claim 1, characterized in that: The end of the stud furthest from the external hexagonal head has a smooth surface and its outer diameter gradually decreases to form a guide portion.

5. The external hexagonal flange suspension bolt according to claim 1, characterized in that: One end of the connecting rope passes through the rivet tube, then winds around the annular rope groove and is inserted into the rivet tube for riveting connection.

6. The external hexagonal flange suspension bolt according to any one of claims 1-5, characterized in that: The stud and the external hexagonal head are integrally connected.

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