Large diameter wire rope socket
By combining a conical sleeve with a conical body and using an anti-slip claw design, the problem of unstable connection of large-diameter wire rope joints under vibration and impact is solved, achieving high-strength and safe wire rope connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANFENG SLING
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-02
AI Technical Summary
Existing large-diameter steel wire rope joints are not secure enough under long-term vibration, impact, or environmental aging, posing a safety hazard.
It adopts a combination structure of conical sleeve and conical body, combined with anti-slip structure and claw design, and generates radial extrusion force and biting through conical surface mating to ensure reliable connection of wire rope, and enhances the bonding strength through alloy casting or resin casting.
It achieves a stable connection between the wire rope and the cable joint under high vibration, high impact and heavy load conditions, reduces stress concentration at single points, and improves the stability and safety of the connection.
Smart Images
Figure CN224315435U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire rope joint technology, specifically a large-diameter wire rope joint. Background Technology
[0002] Wire ropes, as an important load-bearing component, are widely used in large-scale heavy-duty lifting applications such as bridge hoisting, mine hoisting, port lifting, and marine engineering. Especially in long-span, high-tonnage lifting operations, large-diameter wire ropes are typically used for connection and load-bearing to meet strength and stability requirements. To ensure a reliable connection between the wire rope and the lifting equipment, wire rope knots, as connecting transition components, bear the important functions of load-bearing and safety.
[0003] Existing wire rope joint structures mostly use alloy casting and resin bonding to fix the wire rope. Relying solely on the bonding strength between metal and resin lacks mechanical self-locking and anti-loosening designs. Long-term vibration, impact, or environmental aging can lead to a decline in clamping force, posing certain safety hazards. Therefore, it is necessary to provide a large-diameter wire rope joint with higher strength and stability in the connection between the wire rope and the joint, suitable for use with large-diameter wire ropes. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a large-diameter wire rope knot, which effectively improves the poor firmness and stability of some traditional wire rope knots and wire rope connections.
[0005] A large-diameter steel wire rope joint includes a connecting part for fixed connection with a steel wire rope, a lifting part disposed at one end of the connecting part for connection with a lifting device, and a plug-in part. A conical sleeve for the steel wire rope to pass through is disposed through the connecting part. Several slots are recessed downward on the side of the connecting part near the lifting part. The plug-in part includes two symmetrically spliced arc-shaped bodies. A conical body is disposed at the bottom of the two arc-shaped bodies. A plug-in component adapted to the slot is disposed on the bottom side of the arc-shaped body. A claw is disposed on the inner side wall of the conical body. After the two arc-shaped bodies are spliced, they respectively abut against the side of the connecting part near the lifting part. After the conical body is spliced, it is inserted into the conical sleeve. An anti-slip structure is disposed between the inner side wall of the conical sleeve and the outer side wall of the conical body. A fastening structure is disposed between the two conical bodies.
[0006] Preferably, the fastening structure includes an arc-shaped retaining strip protruding from the side wall of one cone relative to the other cone, and a groove recessed into the inner side wall of the outer side wall of the other cone. When the insertion part is spliced, the arc-shaped retaining strip is inserted into the groove.
[0007] Preferably, after the insertion parts are spliced, the maximum outer diameter of the spliced two cone-shaped bodies at the bottom is equal to or slightly greater than the maximum inner diameter of the cone-shaped sleeve.
[0008] Preferably, the anti-slip structure is a friction-enhancing pad layer disposed between the conical sleeve and the conical body, and the friction-enhancing pad layer is made of rubber, polyurethane or metal micro-toothed pad material.
[0009] Preferably, the claw is a hemispherical claw or a barbed claw disposed on the inner side wall of the cone-shaped body, used to bite the outer surface of the wire rope when the insertion part is engaged with the outer side of the wire rope to achieve anti-slip self-locking.
[0010] Furthermore, the barbed claw bends toward one side of the arc-shaped body.
[0011] Preferably, the minimum inner diameter of the tapered sleeve is 200 mm.
[0012] Preferably, the wall thickness of the cone gradually decreases from the side closer to the arc-shaped body to the side farther away from the arc-shaped body.
[0013] Preferably, the taper of the conical sleeve and the conical body after splicing is set to 3° to 7°.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] This invention provides a large-diameter steel wire rope joint. During installation, the large-diameter steel wire rope to be connected is first placed between two conical bodies for initial fixation. Then, using a specialized installation tool, the assembled spliced joint is slowly pushed axially along the conical sleeve inside the joint. As the joint is pushed deeper, the conical surface engagement between the conical sleeve and the conical body generates a gradually increasing radial compressive force. Through the anti-slip structure, reliable engagement between the conical body and the inner wall of the sleeve is ensured. Simultaneously, the claws inside the conical body, under radial compression, tightly adhere to and engage with the surface of the steel wire rope, locking the axial movement of the steel wire rope. Once the connector is advanced to the designed depth and inserted into the slot, the cable joint is installed in place with the wire rope. At this point, the entire cable joint and wire rope form a strong and reliable connection. Subsequently, alloy casting or resin casting is performed to further enhance the bonding strength and achieve a tighter connection. The fit between the connector and the slot prevents rotation between the connector and the connection part and also shares some of the torque load, ensuring a uniform load distribution along the circumferential direction and further reducing stress concentration at single points. Therefore, this large-diameter wire rope joint, together with the wire rope, forms a stable connection structure, ensuring that the large-diameter wire rope joint and the wire rope maintain a stable and safe connection state over a long period under high vibration, high impact, and heavy load conditions. Attached Figure Description
[0016] Figure 1 This is a front structural diagram of the large-diameter steel wire rope knot described in this utility model;
[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the large-diameter steel wire rope joint described in this utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the plug-in part described in this utility model.
[0019] in:
[0020] 10-Connecting part, 20-Lifting part, 30-Plug-in part, 11-Conical sleeve, 12-Slot, 31-Arc-shaped body, 32-Conical body, 33-Plug-in part, 34-Claw, 35-Arc-shaped locking strip, 36-Groove. Detailed Implementation
[0021] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0022] See Figures 1-3 This embodiment provides a large-diameter wire rope joint, which includes a connecting part 10 for fixed connection with a wire rope, a lifting part 20 disposed at one end of the connecting part 10 for connection with a lifting device, and a plug-in part 30. A conical sleeve 11 for the wire rope to pass through is disposed through the connecting part 10. Several slots 12 are recessed downward on the side of the connecting part 10 near the lifting part 20. The plug-in part 30 includes two symmetrically spliced arc-shaped bodies 31, and the bottom of the two arc-shaped bodies 31 is provided with a conical body. 32. The bottom side of the arc-shaped body 31 is provided with a plug-in part 33 that is adapted to the slot 12. The inner side wall of the cone-shaped body 32 is provided with a plurality of claws 34. The two arc-shaped bodies 31 are spliced together and respectively abut against the side of the connecting part 10 near the hoisting part 20. The cone-shaped body 32 is spliced and inserted into the cone-shaped sleeve 11. An anti-slip structure is provided between the inner side wall of the cone-shaped sleeve 11 and the outer side wall of the cone-shaped body 32. A fastening structure is provided between the two cone-shaped bodies 32.
[0023] Preferably, the fastening structure includes a plurality of arc-shaped retaining strips 35 protruding from the sidewall of one cone 32 relative to the other cone 32. The tip of each arc-shaped retaining strip 35 is chamfered or rounded for insertion. A groove 36 is provided on the other cone 32, recessed from the outer sidewall to the inner sidewall of the cone 32. The insertion entrance of this groove 36 faces the other cone 32. When the insertion parts 30 are joined, the arc-shaped retaining strips 35 are inserted and tightly embedded in the groove 36, achieving precise alignment and reliable locking between the two cones 32. This prevents relative slippage of the two cones 32 under axial load and maintains concentric alignment under torque.
[0024] Preferably, after the insertion part 30 is spliced, the maximum outer diameter of the two conical bodies 32 at the bottom is equal to or slightly larger than the maximum inner diameter of the conical sleeve 11. The diameter of the conical body 32 gradually decreases from the side closer to the arc-shaped body 31 to the side farther away from the annular body. When the insertion part 30 is inserted into the conical sleeve 11, an interference fit is formed, thereby obtaining the initial preload without applying additional external force, ensuring that the spliced body fits the inner wall of the sleeve without gaps; as the insertion part 30 goes deeper into the conical sleeve 11, the gradually decreasing outer diameter of the conical body 32 achieves smooth guidance and progressive wedging, so that the radial compressive force increases linearly, ensuring that the highest clamping force is obtained at the final position, effectively eliminating fretting after installation, and ensuring that the cable joint will not become loose or fatigued under vibration and impact loads. It should be noted that after the insertion part 30 is spliced, a conical receiving part is formed between the two conical bodies 32 to accommodate the wire rope.
[0025] Preferably, the anti-slip structure is a friction-enhancing pad layer disposed between the conical sleeve 11 and the conical body 32, the friction-enhancing pad layer being made of rubber, polyurethane, or metal micro-toothed gasket material. This friction-enhancing pad layer has a high coefficient of friction, providing significant preload during the initial insertion stage, enhancing the frictional torque of the contact surface, and ensuring the conical body 32 is firmly engaged within the conical sleeve 11; secondly, it can also compensate to some extent for gaps caused by manufacturing tolerances of the conical surface and uneven on-site installation, maintaining a long-term stable radial extrusion force.
[0026] Preferably, the claw 34 is a hemispherical claw 34 or a barbed claw 34 disposed on the inner sidewall of the cone-shaped body 32. When it is spliced and fastened to the outside of the wire rope at the insertion part 30, it can form multi-point contact or embedded engagement with the surface of the wire rope, thereby effectively restricting the axial slippage of the wire rope in terms of structure. Specifically, the hemispherical claw 34 can provide a stable point contact engagement force under radial pressure, and is suitable for wire ropes of different diameters and surface morphologies. The barbed claw 34 has a stronger unidirectional engagement capability. When the wire rope is tightened, it can penetrate into the surface strand gaps to achieve the effect of "tightening as it is pulled" during installation. In the opposite direction, it forms a blockage, thereby effectively preventing slippage. Therefore, the claw 34 significantly enhances the connection reliability between the cable joint and the wire rope, and can also dynamically enhance the locking force when the external load changes abruptly, improving the fatigue resistance and service life of the overall connection.
[0027] Furthermore, the barbed claw 34 bends towards one side of the arc-shaped body 31. This allows the barbed claw 34 to engage at an angle aligned with the twisting direction of the wire rope's outer surface when the insertion part 30 is inserted into and presses against the wire rope. As the tension increases during installation, the claw 34 tends to further embed and press against the wire rope along with its axial displacement, achieving a dynamically enhanced tight installation effect.
[0028] Preferably, the minimum inner diameter of the tapered sleeve 11 is 200 mm. This size is mainly suitable for the connection requirements of large-diameter wire ropes, ensuring that the sleeve has sufficient internal space to accommodate the insertion and clamping structure of large-diameter wire ropes.
[0029] Preferably, the wall thickness of the conical body 32 gradually decreases from the side closer to the arcuate body 31 to the side farther away from the arcuate body 31. On the one hand, this facilitates the formation of a gradually increasing radial compressive force when the insertion part 30 is inserted into the conical sleeve 11, making the force on the wire rope more gentle during insertion and reducing the damage to the surface of the wire rope caused by the initial impact load. On the other hand, while maintaining the strength requirements, the gradually decreasing wall thickness also optimizes the transition contact state between the inner wall of the conical body 32 and the interior of the conical sleeve 11, making the tight fit between the conical surface of the conical body 32 and the conical sleeve 11 more uniform and reliable, thereby further enhancing the clamping force of the wire rope and the stability and safety of the entire cable joint structure.
[0030] Preferably, the taper of the conical sleeve 11 and the conical body 32 after splicing is set to 3° to 7°. This taper design takes into account both the convenience of assembly operations and the tightness of the connection structure. On the one hand, a moderate taper can generate gradually increasing radial compressive force during the process of pushing the insertion part 30 into the conical sleeve 11 after splicing, ensuring that the conical body 32 can stably clamp the wire rope, thereby achieving a reliable fixing effect. On the other hand, controlling the taper between 3° and 7° avoids the problems of difficult insertion and loose fit caused by an excessively steep conical surface, and also prevents insufficient self-locking performance and wire rope slippage caused by an excessively gentle taper, effectively improving the overall mechanical strength and safety of the cable joint.
[0031] Preferably, a hemispherical claw 34 is provided at the bottom of the inner side of the conical sleeve 11 for locking the bottom of the sleeve to a certain extent when it contacts the wire rope.
[0032] This utility model provides a large-diameter steel wire rope joint. During installation, the large-diameter steel wire rope to be connected is first placed between two conical bodies 32 for initial fixation. Then, with the help of a special installation tool, the spliced insertion part 30 is slowly pushed along the axial direction of the conical sleeve 11 inside the connecting part 10. As the insertion part 30 continues to go deeper, the conical surface engagement between the conical sleeve 11 and the conical body 32 generates a gradually increasing radial compressive force. Through the cooperation of the anti-slip structure, it is ensured that the conical body 32 and the inner wall of the sleeve always maintain a reliable engagement. At the same time, the claws 34 on the inner side of the conical body 32 are tightly pressed and engaged with the surface of the steel wire rope under radial compression, which not only locks the axial movement of the steel wire rope. After the insertion part 30 is advanced to the designed depth and the insertion piece 33 is inserted into the slot 12, the cable joint is installed in place with the wire rope. At this point, the entire cable joint and the wire rope form a firm and reliable connection. Subsequently, alloy casting or resin casting is performed to further enhance the bonding strength and achieve a tighter bonding effect. The cooperation between the insertion piece 33 and the slot 12 prevents rotation between the insertion part 30 and the connecting part 10, and can also share part of the torque load, so that the load is evenly distributed along the circumferential direction, further reducing stress concentration at single points. Therefore, after the large-diameter wire rope joint is connected to the wire rope, they together form a stable connection structure, thereby ensuring that the large-diameter wire rope joint and the wire rope maintain a stable and safe connection state for a long time under high vibration, high impact and heavy load conditions.
[0033] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.
Claims
1. A large-diameter steel wire rope knot, characterized in that: It includes a connecting part for fixed connection with a wire rope, a lifting part for connection with a lifting device at one end of the connecting part, and a plug-in part. A conical sleeve for the wire rope to pass through is provided through the connecting part. Several slots are recessed downward on the side of the connecting part near the lifting part. The plug-in part includes two symmetrically spliced arc-shaped bodies. A conical body is provided at the bottom of the two arc-shaped bodies. A plug-in component adapted to the slot is provided on the bottom side of the arc-shaped body. A claw is provided on the inner side wall of the conical body. After the two arc-shaped bodies are spliced, they abut against the side of the connecting part near the lifting part. After the conical body is spliced, it is inserted into the conical sleeve. An anti-slip structure is provided between the inner side wall of the conical sleeve and the outer side wall of the conical body. A fastening structure is provided between the two conical bodies.
2. The large-diameter steel wire rope knot as described in claim 1, characterized in that, The fastening structure includes an arc-shaped retaining strip protruding from the side wall of one cone relative to the other cone, and a groove recessed into the inner side wall of the outer side wall of the other cone. When the insertion part is spliced, the arc-shaped retaining strip is inserted into the groove.
3. The large-diameter steel wire rope knot as described in claim 1, characterized in that, After the connector is assembled, the maximum outer diameter of the two conical bodies at the bottom is equal to or slightly larger than the maximum inner diameter of the conical sleeve.
4. The large-diameter steel wire rope knot as described in claim 1, characterized in that, The anti-slip structure is a friction-enhancing pad layer disposed between the conical sleeve and the conical body, and the friction-enhancing pad layer is made of rubber, polyurethane or metal micro-toothed pad material.
5. The large-diameter steel wire rope knot as described in claim 1, characterized in that, The claw is a hemispherical claw or a barbed claw disposed on the inner side wall of the cone-shaped body, used to bite the outer surface of the wire rope when the insertion part is engaged with the outer side of the wire rope to achieve anti-slip self-locking.
6. The large-diameter steel wire rope knot as described in claim 5, characterized in that, The barbed claw bends toward one side of the arc-shaped body.
7. The large-diameter steel wire rope knot as described in claim 1, characterized in that, The minimum inner diameter of the tapered sleeve is 200 mm.
8. The large-diameter steel wire rope knot as described in claim 1, characterized in that, The wall thickness of the cone gradually decreases from the side closer to the arc-shaped body to the side farther away from the arc-shaped body.
9. The large-diameter steel wire rope knot as described in claim 1, characterized in that, The taper of the conical sleeve and the conical body after splicing is set to 3° to 7°.