Tail end wedge-caulking type steel wire rope fixing device

Abstract

The utility model provides a tail end wedge-caulking type steel wire rope fixing device which is characterized in that two semi-conical sleeves are spliced to form an integral conical sleeve, and the integral conical sleeve is sleeved in a conical sleeve internally provided with a conical through hole to form a typical wedge-caulking matching structure. In the actual use process, when the steel wire rope bears pulling force, the spliced conical sleeve moves towards the small end direction along the conical hole of the conical sleeve under the pulling effect, and under the matching limitation that the conical hole is gradually narrowed, the two semi-conical sleeves are forced to be gradually and tightly attached to a rope core and a rope strand of the steel wire rope, so that the self-locking clamping effect that the steel wire rope is pulled more and more tightly is achieved; the steel wire rope is effectively prevented from slipping, and the connection firmness and the use safety are improved. Meanwhile, a through hole is formed in the middle of a semi-conical sleeve in the device and used for containing a main rope core of the steel wire rope, a plurality of inwards-sunken steel wire rope strand fixing holes are further formed in the side edge of the semi-conical sleeve, outer-layer rope strands of the steel wire rope can be embedded and fixed, and the effects of accurate guiding and force dividing are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of wire rope fixing devices, specifically a wire rope fixing device with end wedge tightening. Background Technology

[0002] Wire rope, as a high-strength flexible connector, is widely used in engineering fields such as lifting, hoisting, transportation, and mining. During use, the fixing and connection of the wire rope are crucial for ensuring operational safety and reliable force transmission. Especially in the fixing of the wire rope ends, if the fixing method is not secure, the stress is uneven, or the structure is unreasonable, it can easily lead to wire rope slippage, strand breakage, or fatigue damage to the fixing points, thus causing safety accidents.

[0003] Common methods for fixing the ends of wire ropes include: aluminum sleeve crimping, wedge clamping connection, and sleeve injection anchoring. Among these, the wedge clamping fixing structure is widely used due to its advantages such as simple assembly, high load-bearing capacity, and easy disassembly. However, existing wedge clamping fixing devices still have the following shortcomings: First, some structures rely solely on the contact friction between the wire rope as a whole and the wedge sleeve for fixing, without separately limiting the rope core and strands, resulting in uneven stress and easy loosening; Second, wedge clamping structures are mostly one-piece designs, which are inconvenient to install and operate, especially in on-site construction environments, making it difficult to guarantee assembly accuracy and safety; Third, some structures lack necessary wear-resistant designs, which can easily lead to clamp deformation and failure under long-term use or heavy-load conditions. Therefore, it is necessary to provide a more reasonable structure, more reliable clamping effect, longer service life, and easy-to-install end wedge clamping wire rope fixing device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an end-wedge type wire rope fixing device, which effectively improves the problems of poor clamping effect and complicated installation of some traditional wire rope fixing devices.

[0005] A wire rope fixing device with end wedge clamping includes two semi-conical sleeves and a conical sleeve. Each of the two semi-conical sleeves has a through hole in its middle. Each of the two semi-conical sleeves has several wire rope strand fixing holes recessed inward on its side. The two semi-conical sleeves are spliced ​​together to form a conical sleeve and fitted into the conical sleeve. The conical sleeve has a conical through hole inside. The minimum diameter of the conical through hole is smaller than the maximum outer diameter of the conical sleeve after the two semi-conical sleeves are spliced ​​together, and the minimum diameter of the conical through hole is larger than the maximum outer diameter of the conical sleeve after the two semi-conical sleeves are spliced ​​together.

[0006] Preferably, the inner wall of the through hole and the outer wall of the wire rope strand fixing hole are provided with multiple protrusions protruding outward.

[0007] Preferably, an anti-compression layer and a wear-resistant layer are sequentially provided from the inside to the outside on the outer side wall of the semi-conical sleeve and the inner side wall of the conical sleeve.

[0008] Preferably, the splicing surfaces of the through holes of the semi-conical sleeve are not on the same horizontal plane.

[0009] Preferably, the splicing surfaces are Z-shaped planar sections that fit together.

[0010] Preferably, the through hole is a semi-cylindrical through hole.

[0011] Preferably, both the semi-conical sleeve and the conical sleeve are made of high-strength alloy steel.

[0012] Preferably, the inner surface of the conical through hole of the conical sleeve is provided with multiple circumferentially distributed anti-slip ribs.

[0013] Preferably, each of the wire rope strand fixing holes is provided with a removable elastic clamping plate inside.

[0014] Preferably, the splicing joint of the semi-conical sleeve is provided with a magnetic alignment mechanism or a positioning groove structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention provides an end-wedge-type wire rope fixing device, which consists of two semi-conical sleeves spliced ​​together to form a single conical sleeve. This conical sleeve is then fitted inside a conical sleeve with a conical through hole, forming a typical wedge-tight fit structure. In actual use, when the wire rope is subjected to tension, the spliced ​​conical sleeve moves towards the smaller diameter end along the conical hole of the conical sleeve under the pulling action. Under the gradually narrowing fit constraint of the conical hole, the two semi-conical sleeves are forced to gradually and tightly fit against the wire rope core and strands, thereby achieving a self-locking clamping effect of "tightening as it is pulled," effectively preventing the wire rope from slipping and improving the connection's firmness and safety in use. Meanwhile, the semi-conical sleeve in the device has a through hole in the center to accommodate the main core of the wire rope, and several inwardly recessed wire rope strand fixing holes on its side, which can be used to embed and fix the outer strands of the wire rope, playing a role in precise guidance and force distribution, avoiding strand crossing or uneven local stress, thereby improving stress stability and extending the service life of the wire rope. In addition, the two semi-conical sleeves can be quickly installed and disassembled through a splicing structure, which is convenient for quick replacement or reuse on the construction site, significantly improving work efficiency. Its simple structure and few parts, combined with the use of high-strength alloy steel and other materials, give it good tensile strength, impact resistance and durability, making it suitable for complex or heavy-load conditions. Moreover, its manufacturing and maintenance costs are low, making it economical and worth promoting. Therefore, the wire rope fixing device provided in this application has significant progress in terms of structural strength, fixing reliability, ease of use and safety performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the end-wedge type fixed steel wire rope device of this utility model;

[0018] Figure 2 This is a top view schematic diagram of the combined structure of the end-wedge type fixed steel wire rope device described in this utility model;

[0019] Figure 3 This is a schematic diagram of the combined cross-sectional structure of the end-wedge-type fixed wire rope device described in this utility model.

[0020] in:

[0021] 10-Semi-conical sleeve, 20-Conical sleeve, 30-Through hole, 40-Wire rope strand fixing hole, 50-Conical through hole, 60-Splicing surface. Detailed Implementation

[0022] 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.

[0023] See Figures 1-3 This embodiment provides an end-wedge type wire rope fixing device, which includes two semi-conical sleeves 10 and a conical sleeve 20. Each of the two semi-conical sleeves 10 has a through hole 30 in the middle, and each of the two semi-conical sleeves 10 has a plurality of wire rope strand fixing holes 40 recessed inward on the side. The two semi-conical sleeves 10 are spliced ​​together to form a conical sleeve and fitted into the conical sleeve 20. The conical sleeve 20 has a conical through hole 50 inside. The minimum diameter of the conical through hole 50 is smaller than the maximum outer diameter of the conical sleeve after the two semi-conical sleeves 10 are spliced ​​together, and the maximum diameter of the conical through hole 50 is larger than the maximum outer diameter of the conical sleeve after the two semi-conical sleeves 10 are spliced ​​together.

[0024] Preferably, the inner wall of the through hole 30 and the outer wall of the wire rope strand fixing hole 40 are provided with multiple protrusions protruding outwards. These protrusions are used to form multi-point contact and mechanical engagement when the wire rope core and strands are inserted into the through hole 30 and the strand fixing hole, thereby improving the friction and anti-slip capability of the fixing parts. The protrusions are preferably distributed in a hemispherical or conical shape and arranged at intervals along the insertion direction of the wire rope. This not only enhances the clamping effect on the wire rope core and strands but also effectively prevents relative displacement and slippage under long-term load. The gap structure formed between the multiple protrusions can also generate a certain strain buffering effect during the stress process, thereby avoiding fatigue damage to the wire caused by local stress concentration and further improving the service life and operational safety of the entire wire rope. In addition, this structure can achieve efficient and reliable physical fixation without relying on additional adhesive materials. It is easy to install and quick to disassemble, suitable for repeated disassembly and assembly scenarios, and helps to improve the versatility and adaptability of the device.

[0025] Preferably, an anti-compression layer and a wear-resistant layer are sequentially provided from the inside to the outside on the outer wall of the semi-conical sleeve 10 and the inner wall of the conical sleeve 20, respectively, to enhance the structural stability and service life of the device under high load and high frequency of use. The anti-compression layer is preferably made of a high-strength elastic material or a metal composite pad, possessing excellent anti-deformation properties. When the wire rope is under tension and the semi-conical sleeve 10 is driven into the conical sleeve 20, it can evenly disperse and absorb the stress generated by the mutual compression of the conical structures, thereby effectively preventing structural damage to the semi-conical sleeve 10 or the conical sleeve 20, and also ensuring a tighter fixation of the wire rope core and strands. The wear-resistant layer is located outside the anti-compression layer and is preferably made of wear-resistant alloy coating, ceramic coating, or engineering plastic coating material. It is mainly used to resist wear caused by long-term friction and repeated insertion and removal operations, especially contact wear caused by relative sliding between the two during assembly. This wear-resistant layer can significantly improve the durability of the mating interface, reduce the frequency of maintenance, and maintain the fitting accuracy and working stability of the wedge structure, ensuring the fixation reliability of the wire rope and the overall clamping force do not decrease during long-term use.

[0026] Preferably, the splicing surfaces 60 connected by the through holes 30 of the semi-conical sleeves 10 are not on the same horizontal plane. That is, the splicing interfaces of the two semi-conical sleeves 10 are staggered in the axial direction, forming a stepped or oblique structural design. Compared with the traditional planar butt joint method, this asymmetrical splicing structure has stronger anti-slip capability and structural stability. When the device is subjected to axial tensile force, the splicing structure that is not on the same horizontal plane can increase the interface friction and fitting force by forming multiple staggered contact areas, effectively preventing the two semi-conical sleeves 10 from axially misaligning or separating under high load or severe vibration conditions, ensuring the overall integrity of the fixed structure. In addition, the design of the splicing surface 60 can also effectively guide the alignment and limiting of the semi-conical sleeves 10 during the installation process, enabling the two components to achieve preliminary mechanical self-positioning in the early stage of assembly, improving the convenience and accuracy of on-site installation, and reducing the dependence on the assembly experience of operators. Especially in complex working conditions such as field or space constraints, this structure helps to quickly complete the assembly of components, avoiding problems such as the wire rope not being centered or not being clamped properly due to misalignment of the splicing surfaces, thereby further improving the practicality and safety of the device.

[0027] Preferably, the splicing surface 60 is a Z-shaped planar cross-section that fits together. That is, the two semi-conical sleeves 10 form an interlocking structure with a Z-shaped profile at the splicing point along both the axial and radial directions. Compared to ordinary planar or inclined splicing, the Z-shaped cross-section can form multiple interlocking relationships at the splicing point, significantly improving the mechanical strength and shear resistance of the splicing interface. This structure can effectively prevent the semi-conical sleeves 10 from slipping, misaligning, or separating at the splicing surface 60 when the device is subjected to axial tensile force or radial load, thereby ensuring the stability of the overall device structure and the clamping effect of the wire rope. Furthermore, the Z-shaped splicing structure has a certain self-locking guiding effect during assembly. Even in poor construction environments or with limited visibility, it can achieve rapid and accurate splicing positioning through geometric guidance, reducing installation errors and improving assembly efficiency. At the same time, this structure can also generate stronger contact surface compressive stress under external force, causing the splicing gaps to tend to close, thereby further improving the tightness and anti-loosening performance of the device.

[0028] Preferably, the through hole 30 is a semi-cylindrical through hole 30. The two semi-conical sleeves 10 are spliced ​​together to form a complete cylindrical through hole 30, which is used to insert the main core of the wire rope.

[0029] Preferably, both the semi-conical sleeve 10 and the conical sleeve 20 are made of high-strength alloy steel, which gives the device excellent tensile strength, yield strength and impact resistance. It can effectively withstand the huge tension and lateral pressure generated by the wire rope under heavy load, high frequency vibration or sudden impact conditions, and is not prone to deformation, cracking or breakage, which greatly improves the structural stability and safety margin of the whole wedge clamping and fixing device.

[0030] Preferably, the inner surface of the conical through hole 50 of the conical sleeve 20 is provided with multiple circumferentially distributed anti-slip ribs. These ribs enhance the contact friction between the conical sleeve and the conical sleeve 20. When the wire rope is under tension and causes the conical sleeve to move towards the small-diameter end of the conical through hole 50 of the conical sleeve 20, the anti-slip ribs can form a localized interlocking blocking structure, which not only effectively limits the sliding displacement of the conical sleeve but also enhances the wedging effect, achieving a more efficient "self-locking" fixation. Simultaneously, the anti-slip ribs help to disperse contact pressure, preventing wear or fatigue damage to the surface material of the conical sleeve due to localized stress concentration, thereby improving the overall durability and service life of the structure. Furthermore, the anti-slip ribs can be designed with equal or variable spacing according to actual needs, and their size and quantity can be customized according to the load level and wire rope specifications to meet the clamping strength requirements in different application environments.

[0031] Preferably, each of the wire rope strand fixing holes 40 is provided with a removable elastic clamping plate inside. This plate is used to elastically limit and clamp the embedded wire rope strands. The elastic clamping plate is made of spring steel or rubber-metal composite material, possessing excellent elastic recovery capability and wear resistance and fatigue resistance. It can automatically adapt to the dimensional tolerances of the strands during installation, ensuring uniform force distribution and stable fit among the strands, preventing loosening, displacement, or kinking during tensioning. Furthermore, the removable design of the elastic clamping plate facilitates later replacement and maintenance, allowing for quick adjustment of the clamping elasticity according to different wire rope models or working conditions, thus improving the adaptability and service life of the device.

[0032] Preferably, the splicing joint of the semi-conical sleeve 10 is provided with a magnetic alignment mechanism or a positioning groove structure to provide auxiliary alignment and stable positioning during the splicing and assembly of the two semi-conical sleeves 10. The magnetic alignment mechanism can be a miniature magnet embedded in the splicing edge, which automatically attracts and positions itself when close together, ensuring that the two semi-conical sleeves 10 are quickly aligned in the radial and axial directions, improving assembly efficiency and accuracy. The positioning groove structure, through complementary protrusions or slots provided on the splicing surface 60, achieves mechanical anti-slip alignment and anti-misalignment functions, effectively avoiding problems such as insufficient clamping force or device misalignment caused by improper splicing.

[0033] This invention provides an end-wedge-type wire rope fixing device, which consists of two semi-conical sleeves 10 spliced ​​together to form a single conical sleeve, which is then fitted inside a conical sleeve 20 with a conical through hole 50, forming a typical wedge-tight fit structure. In actual use, when the wire rope is under tension, the spliced ​​conical sleeve moves along the conical hole of the conical sleeve 20 towards the smaller diameter end under pulling action. Under the gradually narrowing fit constraint of the conical hole, the two semi-conical sleeves 10 are forced to gradually and tightly fit against the wire rope core and strands, thereby achieving a self-locking clamping effect of "tightening as it is pulled," effectively preventing wire rope slippage and improving the connection's firmness and safety. Meanwhile, the semi-conical sleeve 10 in the device has a through hole 30 in the middle to accommodate the main core of the wire rope. Its side also has several inwardly recessed wire rope strand fixing holes 40, which can be used to embed and fix the outer strands of the wire rope, providing precise guidance and force distribution, preventing strand crossing or uneven stress, thereby improving stress stability and extending the service life of the wire rope. Furthermore, the two semi-conical sleeves 10 can be quickly installed and disassembled through a splicing structure, facilitating rapid replacement or reuse on the construction site and significantly improving work efficiency. Its simple structure and few parts, combined with the use of high-strength alloy steel and other materials, give it excellent tensile strength, impact resistance, and durability, making it suitable for complex or heavy-load conditions. Moreover, its low manufacturing and maintenance costs make it economically viable and worthy of widespread application. Therefore, the wire rope fixing device provided in this application represents a significant improvement in structural strength, fixing reliability, ease of use, and safety performance.

[0034] 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 device for fixing a steel wire rope with an end wedge clamping mechanism, characterized in that: It comprises two semi-conical sleeves and a conical sleeve. Each of the two semi-conical sleeves has a through hole in its middle. Each of the two semi-conical sleeves has several wire rope strand fixing holes recessed inward on its side. The two semi-conical sleeves are spliced ​​together to form a conical sleeve and fitted into the conical sleeve. The conical sleeve has a conical through hole inside. The minimum diameter of the conical through hole is smaller than the maximum outer diameter of the conical sleeve after the two semi-conical sleeves are spliced ​​together, and the minimum diameter of the conical through hole is larger than the maximum outer diameter of the conical sleeve after the two semi-conical sleeves are spliced ​​together.

2. The end-wedge type fixed wire rope device as described in claim 1, characterized in that, The inner wall of the through hole and the outer wall of the wire rope strand fixing hole are provided with multiple protrusions protruding outward.

3. The end-wedge type fixed wire rope device as described in claim 1, characterized in that, An anti-compression layer and a wear-resistant layer are sequentially provided from the inside to the outside on the outer wall of the semi-conical sleeve and the inner wall of the conical sleeve.

4. The end-wedge type fixing wire rope device as described in claim 1, characterized in that, The splicing surfaces of the through holes of the semi-conical sleeve are not on the same horizontal plane.

5. The end-wedge type fixing wire rope device as described in claim 4, characterized in that, The splicing surfaces are Z-shaped flat sections that fit together.

6. The end-wedge type fixing wire rope device as described in claim 1, characterized in that, The through hole is a semi-cylindrical through hole.

7. The end-wedge type fixing wire rope device as described in claim 1, characterized in that, Both the semi-conical sleeve and the conical sleeve are made of high-strength alloy steel.

8. The end-wedge type fixed wire rope device as described in claim 1, characterized in that, The inner surface of the conical through hole of the conical sleeve is provided with multiple circumferentially distributed anti-slip ribs.

9. The end-wedge type fixing wire rope device as described in claim 1, characterized in that, Each of the wire rope strand fixing holes is provided with a removable elastic clamping plate inside.

10. The end-wedge type fixing wire rope device as described in claim 1, characterized in that, The splicing joint of the semi-conical sleeve is provided with a magnetic alignment mechanism or a positioning groove structure.

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