Steel wire rope fixing ring and manufacturing method thereof

Abstract

The present application relates to a kind of steel wire rope fixing ring in the technical field of protective net production, which is self-wound by single spiral strand of steel wire rope.Formed when preparing, including the following steps: (1) cut steel wire rope according to target length;(2) the cut steel wire rope is disassembled into multiple spiral strands;(3) take one of the spiral strands, bend one end into a single strand ring, the diameter of the single strand ring is equal to the design diameter of the target steel wire rope fixing ring;(4) based on the single strand ring, self-winding is carried out along the ring body direction with the same spiral strand until the spiral strand is wound;(5) lock the strand head at the winding end, and the steel wire rope fixing ring is prepared.The annular protective net made of the above steel wire rope fixing ring has excellent impact energy performance.

Description

Technical Field

[0001] This invention relates to the field of protective netting production technology, specifically to a steel wire rope fixing ring and its manufacturing method. Background Technology

[0002] Ring-shaped protective netting, also known as passive slope protection netting, has been widely used in ground geological disaster protection in highways, railways, hydropower stations, mines, municipal projects, and scenic areas. It has solved some slope protection problems that were difficult to address with traditional technologies in China, achieving good results and becoming a new slope control method on par with traditional technologies such as shotcrete and grouted masonry. The fixing rings (hereinafter referred to as fixing rings) of conventional ring-shaped protective netting are mostly made of steel wire wound around the circumference. When laid on the slope to perform its protective function, the steel wires inside the fixing rings cannot be evenly stressed, reducing the load-bearing capacity of the fixing rings.

[0003] To address this issue, the applicant's patent with authorization announcement number "CN 217150308 U" discloses a fixing ring for a ring-shaped protective net. This fixing ring comprises multiple steel wires, which are intertwined to form a steel wire rope. The steel wires on the rope are spirally wound multiple times to form a ring, with the first and last ends of the rope connected. A fixing mechanism is fixedly connected at the connection point to secure the first and last ends of the rope. This design significantly improves the load-bearing capacity of the fixing ring. However, in practical use, it has been found that because the fixing ring is made by first twisting multiple steel wires into a steel wire rope and then spirally winding it into a ring, the following problems arise: 1. Multiple independent steel wires are first twisted into a rope, and then spiraled into a loop. The spiral is wrapped in multiple layers, and it is difficult to control the number of turns, tension, and concentricity, which can easily lead to uneven tension and local bulges.

[0004] 2. The multi-layered twisted structure of the fixed ring causes interlayer slippage between the multiple layers when subjected to impact, which weakens its resistance to shear and lateral compression.

[0005] 3. In multi-strand, multi-layer, and multi-ring structures, if the stress on a particular ring or strand is uneven, the risk of overall stress concentration increases significantly.

[0006] 4. Complex specialized equipment is required to control the pitch and tension of the stranding and winding, which leads to increased manufacturing costs, energy consumption and defect rate.

[0007] The ring-shaped protective net prepared by the above fixing rings has a significantly improved impact resistance energy compared with the traditional ring-shaped protective net, but it can be further strengthened. Summary of the Invention

[0008] The present invention aims to provide a steel wire rope fixing ring to lay the foundation for obtaining a ring-shaped protective net with high impact resistance.

[0009] Objective 1: To request protection for a wire rope retaining ring formed by the self-winding of a single spiral strand of a wire rope.

[0010] The beneficial effects of this solution are as follows: The wire rope fixing ring in this solution is formed by self-winding a single spiral strand, resulting in a continuous single-strand structure without the interlayer interfaces that occur with traditional multi-layer wire rope winding. Under impact loads, the turns transition continuously within the same strand without relative slippage, significantly enhancing the wire rope fixing ring's resistance to shearing and lateral compression. Furthermore, during the self-winding process, the same spiral strand winds continuously and uniformly along the ring's direction, ensuring consistent tension, pitch, and concentricity across all parts of the ring. This avoids the uneven tension and localized bulging problems common with multi-strand and multi-layer winding, allowing impact loads to be evenly distributed throughout the ring and greatly reducing the risk of localized stress concentration. The single-strand self-winding ring exhibits tighter fit and stronger interlocking between strands, resulting in superior overall integrity compared to multi-layer structures formed by re-winding a single wire rope. Under the same wire rope specifications, the wire rope fixing ring of this solution possesses higher tensile and impact energy absorption capabilities, laying a solid foundation for the fabrication of high-performance ring-shaped protective nets.

[0011] Objective 2: To request protection for a method of manufacturing a wire rope fixing ring, including the following steps: (1) Cut the wire rope to the target length; (2) Disassemble the cut wire rope into multiple spiral strands; (3) Take one of the spiral strands and bend one end into a single-strand ring. The diameter of the single-strand ring is equal to the design diameter of the target wire rope fixing ring. (4) Based on the single-strand ring, the same spiral strand is self-wound along the direction of the ring until the spiral strand is completely wound. (5) Lock the strand at the end of the winding to obtain a wire rope fixing ring.

[0012] The beneficial effects of this solution are as follows: This method avoids the difficulties of traditional processes that require complex specialized equipment to control the stranding and multi-layer winding pitch and tension of wire ropes. It only requires conventional cutting, disassembly, bending, and self-winding operations, which can even be completed semi-manually or with simple tooling, significantly reducing equipment investment, production energy consumption, and process complexity. Furthermore, self-winding is based on pre-bent single-strand rings, allowing for intuitive and precise control of ring diameter, number of turns, and tension. Since there is no multi-layer concentricity matching problem, it completely eliminates defects common in traditional processes such as bulging, uneven tension, and eccentricity, significantly improving the first-pass yield and reducing the defect rate. Different specifications of wire rope can be flexibly selected according to the design diameter and load-bearing requirements of the target wire rope fixing ring, and product performance can be quickly adjusted by regulating the number of self-winding turns and tension. No complex molds need to be replaced or equipment readjusted, making it particularly suitable for multi-variety, small-batch production.

[0013] Preferably, as an improvement, this application uses a special tooling to prepare the wire rope fixing ring. The special tooling includes a limiting frame and a rope wheel for winding and unwinding the spiral strands. The limiting frame includes an arc-shaped limiting block with an arc-shaped limiting groove on one convex side. The limiting groove is concentric with the limiting block and extends from one end of the limiting block to the other. The rope wheel includes a ring and a concentric annular groove on its outer wall. When using this special tooling to prepare the wire rope fixing ring, the disassembled single spiral strand is wound into the concentric annular groove of the ring. Then, the free end of the spiral strand is pulled out from the concentric annular groove of the ring and bent into a single-strand ring. The single-strand ring is then placed on the limiting groove of the limiting block, and the ring is self-wound along the single-strand ring, releasing strands as it winds, until all the spiral strands in the concentric annular groove are released. The end of the wound strand is then locked to obtain the wire rope fixing ring. The design of this special tooling significantly improves the production efficiency of the wire rope fixing ring.

[0014] Preferably, as an improvement, the limiting frame further includes a base with a support plate on it. The limiting block is fixedly connected to the top of the support plate. The top of the support plate has a notch, and an arc-shaped baffle for blocking the limiting groove is detachably connected to the notch. The base supports the limiting frame, while the arc-shaped baffle helps to block the limiting groove, preventing the wire rope fixing ring from detaching from the limiting block, thereby improving production efficiency. At the same time, the wire rope fixing ring is always located within the limiting groove, which helps to prevent deformation of the wire rope fixing ring.

[0015] Preferably, as an improvement, the two ends of the arc-shaped baffle are bent in the opposite direction to the arc-shaped concave surface. This avoids the two ends of the arc-shaped baffle scraping against the spiral strands during the preparation of the wire rope fixing ring.

[0016] Preferably, as an improvement, there are two support plates, which are fixedly connected to opposite ends of the base. The two support plates provide more stable support.

[0017] Preferably, as an improvement, the base is provided with connection holes. These connection holes allow for quick connection of the base to other support platforms.

[0018] Objective 3: To request protection for the ring-shaped protective netting containing the aforementioned wire rope fixing rings.

[0019] Preferably, as an improvement, the ring-shaped protective net is rectangular and is composed of multiple wire rope fixing rings nested together. The wire rope fixing rings located at the four corners of the ring-shaped protective net are nested together with one wire rope fixing ring, the wire rope fixing rings located at the outermost non-corner locations of the ring-shaped protective net are nested together with two wire rope fixing rings, and the wire rope fixing rings inside the ring-shaped protective net are nested together with four wire rope fixing rings.

[0020] Objective 4: To request protection of the method for manufacturing a ring-shaped protective net, including the following steps: (1) Cut the wire rope to the required length and disassemble it into multiple spiral strands; (2) Bend one end of a single spiral strand into a single-strand ring. The diameter of the single-strand ring is equal to the design diameter of the target wire rope fixing ring. The spiral strand self-wraps along the ring direction until the spiral strand is fully wound. Then, lock the end of the strand at the winding end to obtain the first wire rope fixing ring. (3) Take another spiral strand, pass it through the ring body of the first wire rope fixing ring, bend a single strand ring, and wind along the single strand ring until the spiral strand is finished. Lock the strand head at the end of the winding to obtain a second wire rope fixing ring nested and connected with the first wire rope fixing ring. (4) Repeat step (3) to prepare nested wire rope fixing rings in sequence, forming a ring-shaped protective net with multiple wire rope fixing rings nested together.

[0021] Beneficial Effects: The progressive manufacturing method of "making rings and connecting them simultaneously" allows each completed wire rope fixing ring to nest with the previous one, eliminating the need for additional weaving or assembly processes after all wire rope fixing rings are prepared, thus improving production efficiency. Each wire rope fixing ring constituting the protective net is a continuous single-strand self-winding structure with no interlayer interfaces or relative slippage tendency, and each ring itself possesses excellent shear and lateral compression resistance. At the nested connections, the rings are mechanically interlocked, eliminating welding points or additional connectors, thus removing weak links in traditional connection methods. When the protective net is subjected to impact loads such as falling rocks or landslides, the force chain can be quickly and continuously transmitted along the nested ring network to multiple surrounding wire rope fixing rings, achieving overall coordinated load-bearing and significantly improving the energy absorption capacity and ultimate impact resistance of the protective net.

[0022] In this application, cutting the wire rope to the target length means calculating the length of the spiral strand required to make the target wire rope fixing ring based on the design diameter and cross-sectional diameter of the target wire rope fixing ring, and then based on the diameter of the single spiral strand of the wire rope, which is the length of the wire rope after cutting.

[0023] It should be noted that during the preparation of the wire rope fixing ring, the length can be cut to be greater than the theoretically required total length, leaving room for subsequent trimming. During the winding process, once the metal cross-sectional area of ​​the wire rope fixing ring reaches the target size, the excess portion of the spiral strands that exceeds the required length of the ring is cut off, and the strand head at the winding end is locked.

[0024] In this application, the term "ring-shaped protective net" does not refer to the overall shape of the protective net being ring-shaped, but rather to the fact that a single component (the wire rope fixing ring) constituting the protective net is ring-shaped. Therefore, the protective net is named "ring-shaped protective net". Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a limiting frame in a special tooling according to Embodiment 1 of the present invention.

[0026] Figure 2 for Figure 1 Top view.

[0027] Figure 3 for Figure 2 A 3D view of the middle limit block.

[0028] Figure 4 This is a top view of a rope pulley in a special tooling according to Embodiment 1 of the present invention.

[0029] Figure 5 for Figure 4 Front view of the middle rope reel.

[0030] Figure 6 Images used for limit brackets.

[0031] Figure 7 Image used for rope reels.

[0032] Figure 8 A photo of a wire rope fixing ring.

[0033] Figure 9 This is a photo of a ring-shaped protective net.

[0034] Appendix Figures 10-13 This is a test report on the bursting force of the protective netting prepared in Example 3.

[0035] Appendix Figures 14-17 This is a tensile strength test report for the protective netting prepared in Example 3.

[0036] The reference numerals in the accompanying drawings include: 1. Limiting block; 2. Arc-shaped baffle; 3. Support plate; 4. Base; 5. Connecting hole; 6. Limiting groove; 7. Rope wheel; 8. Concentric annular groove. Detailed Implementation

[0037] The following detailed description illustrates the specific implementation method: Example 1 is basically as shown in the appendix. Figure 1 As shown: A special tooling includes a limiting frame and a rope wheel 7 for winding and unwinding spiral strands.

[0038] Limit bracket as attached Figures 1-3 As shown, the system includes a base 4, an arc-shaped baffle 2, and an arc-shaped limiting block 1. The base 4 has three connecting holes 5, which facilitate connection between the base 4 and other support platforms via threaded holes. Two vertically arranged support plates 3 are also welded to the base 4, and the two support plates 3 are fixedly connected to opposite ends of the base 4. The limiting block 1 is welded to the top of the support plates 3, and the top of both support plates 3 has a notch for engaging the arc-shaped baffle 2. The convex side of the limiting block 1 has an arc-shaped limiting groove 6, which is concentric with the limiting block 1 and extends from one end of the limiting block 1 to the other end, i.e., the limiting groove 6 is a through groove. The two ends of the arc-shaped baffle 2 are bent in opposite directions to the arc-shaped concave surface. When the arc-shaped baffle 2 is inserted into the notch, it covers the limiting groove 6.

[0039] Rope reel 7 as attached Figures 4-5 As shown, it includes a circular ring and a concentric annular groove 8 disposed on its outer wall.

[0040] Example 2, a method for preparing a wire rope retaining ring using the special tooling of Example 1, includes the following steps: (1) Cut the wire rope to the target length; (2) Disassemble the cut wire rope into multiple spiral strands, and then wind each spiral strand into the concentric annular groove 8 of the ring (e.g., Figure 7 ); (3) Select a suitable support platform according to the height of the staff, and fix the limiting frame on the support platform (e.g., use screws to connect to the support platform through the connecting hole 5). Then, pull the outer end of the spiral strand out of the concentric annular groove 8 of the ring and bend it into a single-strand ring. The diameter of the single-strand ring is equal to the design diameter of the target wire rope fixing ring. Then, put the single-strand ring into the limiting groove 6 of the limiting block 1, and insert the arc-shaped baffle 2 into the notch of the support plate 3. The arc-shaped baffle 2 prevents the single-strand ring from coming out of the limiting groove 6 (e.g., ...). Figure 6 ); (4) Based on the single-strand ring, the ring is self-wound along the single-strand ring, and the strands are released while winding. After the winding is formed, the spiral strands in the rope wheel 7 are released. (5) Lock the strand at the end of the winding to obtain a wire rope fixing ring (e.g., Figure 8 (As shown).

[0041] Example 3, a method for preparing a wire rope retaining ring using the special tooling of Example 1, includes the following steps: (1) Cut the wire rope to the target length, disassemble it into multiple spiral strands, and then wind each single spiral strand into the concentric annular groove 8 of the ring (e.g., Figure 7 ); (2) Select a suitable support platform according to the height of the staff, and fix the limiting frame on the support platform (e.g., use screws to connect to the support platform through the connecting hole 5). Then, pull the outer end of the spiral strand out of the concentric annular groove 8 of the ring and bend it into a single-strand ring. The diameter of the single-strand ring is equal to the design diameter of the target wire rope fixing ring. Then, put the single-strand ring into the limiting groove 6 of the limiting block 1, and insert the arc-shaped baffle 2 into the notch of the support plate 3. The arc-shaped baffle 2 prevents the single-strand ring from coming out of the limiting groove 6 (e.g., ...). Figure 6 Based on this single-strand ring, the circular ring is self-wound along the single-strand ring, releasing strands as it winds. After winding, the spiral strands in the rope wheel 7 are completely released. The strand head at the end of the winding is locked to obtain a wire rope fixing ring (such as...). Figure 8 (As shown).

[0042] (3) Take the spiral strand from another ring, pass it through the ring body of the first wire rope fixing ring (and / or the adjacent wire rope fixing ring), bend the single-strand ring, and then put the single-strand ring into the limiting groove 6 of the limiting block 1. Insert the arc-shaped baffle 2 into the notch of the support plate 3. Based on the single-strand ring, the ring is self-wound along the single-strand ring. While winding, the strand is released. After the winding is formed, the spiral strand in the rope wheel 7 is released. Use a clamp to lock the strand head at the end of the winding to obtain the second wire rope fixing ring nested and connected with the first wire rope fixing ring. (4) Repeat step (3) to sequentially prepare nested wire rope fixing rings, forming a ring-shaped protective net composed of multiple nested wire rope fixing rings (e.g., Figure 9 (As shown).

[0043] Comparative Example: A ring-shaped protective net was manufactured using the patented product from the applicant's authorized publication number "CN 217150308 U," entitled "A Fixing Ring for a Ring-Shaped Protective Net." During manufacturing, a nested connection method was used. Specifically, when a later fixing ring connects to an earlier fixing ring, one end of the steel wire rope of the later fixing ring is first passed through the earlier fixing ring to be connected, and then U-shaped clips are used to fix both ends of the steel wire rope. The final ring-shaped protective net structure is consistent with the protective net structure of Example 3; both are rectangular. The ring-shaped protective net consists of multiple nested fixing rings. The fixing rings at the four corners of the ring-shaped protective net are nested with one fixing ring, the fixing rings at the outermost non-corner locations of the ring-shaped protective net are nested with two fixing rings, and the fixing rings inside the ring-shaped protective net are nested with four adjacent fixing rings. The steel wire strength of the steel wire rope used in both methods is 1770 MPa.

[0044] Under the same impact energy, the required metal cross-sectional area of ​​the ring-shaped protective nets prepared in Example 3 and the comparative example were compared, and the results are shown below:

[0045] The bursting force and tensile strength of the protective net prepared in Example 3 were tested, and the results are shown in the appendix. Figures 11-17 As shown; three protective nets were used for each test. For the bursting force test, the protective netting specification was 3.5. For a 3.5m long net, the tensile strength test was conducted using a net approximately 1.5m wide. 1.5m. All mesh types are R7 / 6.8 / 350 (R indicates a ring-shaped protective mesh, 7 indicates the number of spiral turns, and 6.8 indicates the metal cross-section of the wire rope fixing ring is 6.8mm). 2 (350 indicates that the diameter of the wire rope fixing ring is 350mm). The results show that the average breaking resistance of the three protective nets is 131.4kN, and the average tensile strength of the three protective nets is 63.3kN / m.

[0046] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A wire rope fixing ring, characterized in that: The wire rope retaining ring is formed by the self-winding of a single spiral strand of the wire rope.

2. The method for manufacturing the wire rope fixing ring according to claim 1, characterized in that: Includes the following steps: (1) Cut the wire rope to the target length; (2) Disassemble the cut wire rope into multiple spiral strands; (3) Take one of the spiral strands and bend one end into a single-strand ring. The diameter of the single-strand ring is equal to the design diameter of the target wire rope fixing ring. (4) Based on the single-strand ring, the same spiral strand is self-wound along the direction of the ring until the spiral strand is completely wound. (5) Lock the strand at the end of the winding to obtain a wire rope fixing ring.

3. The method for manufacturing a wire rope fixing ring according to claim 2, characterized in that: A special tooling is used to prepare a wire rope fixing ring. The tooling includes a limiting frame and a rope wheel for winding and unwinding the spiral strands. The limiting frame includes an arc-shaped limiting block with an arc-shaped limiting groove on one side of its convex surface. The limiting groove is concentric with the limiting block and extends from one end of the limiting block to the other. The rope wheel includes a ring and a concentric annular groove on its outer wall. When using this special tooling to prepare the wire rope fixing ring, the disassembled single spiral strand is wound into the concentric annular groove of the ring. Then, the free end of the spiral strand is pulled out from the concentric annular groove of the ring and bent into a single-strand ring. The single-strand ring is then placed on the limiting groove of the limiting block, and the ring is self-wound along the single-strand ring while winding and unwinding the strands until all the spiral strands in the concentric annular groove are released. The end of the wound strands is then locked to obtain the wire rope fixing ring.

4. The method for manufacturing a wire rope fixing ring according to claim 3, characterized in that: The limiting frame also includes a base, on which a support plate is provided. The limiting block is fixedly connected to the top of the support plate. The top of the support plate has a notch, and an arc-shaped baffle for blocking the limiting groove is detachably connected to the notch.

5. The method for manufacturing a wire rope fixing ring according to claim 4, characterized in that: The two ends of the arc-shaped baffle bend in the opposite direction to the concave surface of the arc.

6. The method for manufacturing a wire rope fixing ring according to claim 5, characterized in that: There are two support plates, which are fixedly connected to opposite ends of the base.

7. The method for manufacturing a wire rope fixing ring according to claim 6, characterized in that: The base is provided with connection holes.

8. A ring-shaped protective net, characterized in that: It includes the wire rope fixing ring as described in claim 1.

9. A ring-shaped protective net according to claim 8, characterized in that: The ring-shaped protective net is rectangular and is composed of multiple wire rope fixing rings nested together. The wire rope fixing rings at the four corners of the ring-shaped protective net are nested together with one wire rope fixing ring. The wire rope fixing rings at the outermost non-corner locations of the ring-shaped protective net are nested together with two wire rope fixing rings. The wire rope fixing rings inside the ring-shaped protective net are nested together with four wire rope fixing rings.

10. The method for manufacturing the ring-shaped protective net according to claim 9, characterized in that: Includes the following steps: (1) Cut the wire rope to the required length and disassemble it into multiple spiral strands; (2) Bend one end of a single spiral strand into a single-strand ring. The diameter of the single-strand ring is equal to the design diameter of the target wire rope fixing ring. The spiral strand self-wraps along the ring direction until the spiral strand is fully wound. Then, lock the end of the strand at the winding end to obtain the first wire rope fixing ring. (3) Take another spiral strand, pass it through the ring body of the first wire rope fixing ring, bend a single strand ring, and wind along the single strand ring until the spiral strand is finished. Lock the strand head at the end of the winding to obtain a second wire rope fixing ring nested and connected with the first wire rope fixing ring. (4) Repeat step (3) to prepare nested wire rope fixing rings in sequence, forming a ring-shaped protective net with multiple wire rope fixing rings nested together.

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