A flexible wire rod
The multi-layered structure design of the drawbar solves the problem of poor compressive strength, improves weather resistance and corrosion resistance, extends service life, and makes it suitable for outdoor environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PINXU POWER TECH (HEBEI) CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-12
AI Technical Summary
Existing cable pullers have poor compressive strength and are prone to breakage after long-term use, affecting the service life of cables.
It adopts a multi-layer structure design, including a steel wire base layer, a toughening layer, a pressure layer and a protective layer. The protective layer consists of a hot-dip galvanized layer, an anti-oxidation layer and an acrylic paint layer. The pressure layer consists of an alloy steel layer and a polymer material layer. The chromium alloy layer provides additional protection.
It improves the weather resistance, corrosion resistance and compressive strength of the pull bar, extends its service life, and is suitable for outdoor environments.
Smart Images

Figure CN224351708U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire rods, and more particularly to a bending-resistant wire rod. Background Technology
[0002] A manifold is a widely used hand tool in industries such as engineering and construction. It can be used to pull pipes, cables, and lines through. Its main components include the rod body, lead-in connector, connector, and auxiliary tools. It can also be customized and modified to meet specific needs in different application scenarios.
[0003] Currently available cable pullers have poor compressive strength, and long-term use will cause them to break due to tensile force, which will affect the later use of cables and shorten the service life of the cable pullers.
[0004] Therefore, it is necessary to provide a bending-resistant drawbar to solve the above-mentioned technical problems. The information disclosed in this background section is only intended to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or to imply in any way that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] This utility model provides a bending-resistant pull bar, which solves the technical problem that pull bars have poor compressive strength and will break due to tensile force after long-term use, which will affect the later use of cables and shorten the service life of the pull bar.
[0006] To solve the above-mentioned technical problems, this utility model provides a bending-resistant pull rod, including a pull rod body, with a lead hook ring provided on both sides of the pull rod body. The pull rod body includes a steel wire base layer, a toughening layer on the outer surface of the steel wire base layer, a pressure-increasing layer on the outer surface of the toughening layer, a protective layer on the outer surface of the pressure-increasing layer, the protective layer including a hot-dip galvanized layer, an anti-oxidation layer on the outer surface of the hot-dip galvanized layer, an acrylic paint layer on the outer surface of the anti-oxidation layer, an alloy steel layer, a polymer material layer on the outer surface of the alloy steel layer, and a chromium alloy layer on the outer surface of the polymer material layer.
[0007] Preferably, the outer surface of the alloy steel layer is bonded to the inner surface of the polymer material layer, and the outer surface of the polymer material layer is bonded to the inner surface of the chromium alloy layer.
[0008] Preferably, the outer surface of the hot-dip galvanized layer is bonded to the inner surface of the anti-oxidation layer, and the outer surface of the anti-oxidation layer is bonded to the inner surface of the acrylic paint layer.
[0009] Preferably, the pull rod body and the lead hook ring are integrally bent and formed, and the material of the lead hook ring is the same as that of the pull rod body.
[0010] Preferably, the outer surface of the steel wire base layer is bonded to the inner surface of the toughening layer, and the outer surface of the toughening layer is bonded to the inner surface of the pressure-increasing layer.
[0011] Preferably, the outer surface of the pressure-boosting layer is bonded to the inner surface of the protective layer.
[0012] Compared with related technologies, the bending-resistant drawbar provided by this utility model has the following beneficial effects:
[0013] This utility model provides a bending-resistant manifold bar. Through the setting of a protective layer, it has strong weather resistance and corrosion resistance, making it suitable for outdoor use. It can form a protective film on the surface of the manifold bar body to prevent ultraviolet radiation and chemical corrosion, thereby increasing the strength and corrosion resistance of the manifold bar body.
[0014] This utility model provides a bending-resistant drawbar. Through the addition of a pressure-enhancing layer, the hardness is increased, which can resist wear and scratches. The alloying elements can resist corrosion and oxidation, making the steel more durable and extending the compressive strength and corrosion resistance of the drawbar body, thus extending the service life of the drawbar body. Attached Figure Description
[0015] Figure 1 A schematic diagram of a preferred embodiment of a bend-resistant wire rod provided by this utility model;
[0016] Figure 2 This is a partial sectional view of the main body structure of the drawbar of this utility model;
[0017] Figure 3 This is a partial cross-sectional view of the pressure-boosting layer structure of this utility model;
[0018] Figure 4 This is a partial cross-sectional view of the protective layer structure of this utility model.
[0019] The following are the labeling elements in the diagram: 1. Pull rod body; 2. Lead hook ring; 3. Steel wire base layer; 4. Toughness layer; 5. Pressure-increasing layer; 51. Alloy steel layer; 52. Polymer material layer; 53. Chromium alloy layer; 6. Protective layer; 61. Hot-dip galvanized layer; 62. Anti-oxidation layer; 63. Acrylic paint layer. Detailed Implementation
[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0021] Example 1:
[0022] Please see Figure 1-4This utility model provides a technical solution: a bending-resistant pull rod, including a pull rod body 1, with a lead hook ring 2 on both sides of the pull rod body 1, the pull rod body 1 including a steel wire base layer 3, a toughness layer 4 on the outer surface of the steel wire base layer 3, a pressure-increasing layer 5 on the outer surface of the toughness layer 4, a protective layer 6 on the outer surface of the pressure-increasing layer 5, the protective layer 6 including a hot-dip galvanized layer 61, an anti-oxidation layer 62 on the outer surface of the hot-dip galvanized layer 61, an acrylic paint layer 63 on the outer surface of the anti-oxidation layer 62, the pressure-increasing layer 5 including an alloy steel layer 51, a polymer material layer 52 on the outer surface of the alloy steel layer 51, and a chromium alloy layer 53 on the outer surface of the polymer material layer 52.
[0023] In this embodiment, the acrylic paint layer 63 provides strong weather resistance and corrosion resistance, making it suitable for outdoor use. It forms a protective film on the surface of the drawbar body 1, preventing ultraviolet radiation and chemical corrosion, thus increasing the strength and corrosion resistance of the drawbar body 1. The hot-dip galvanized layer 61 and the anti-oxidation layer 62 serve to prevent metal corrosion. Zinc reacts with oxygen and moisture in the natural environment to form a dense protective film of zinc oxide or basic zinc carbonate, effectively isolating the external corrosive medium from contact with the base metal, thereby significantly reducing the corrosion rate. This protective film is particularly effective in humid or salty environments, extending the strength and corrosion resistance of the drawbar body 1.
[0024] Example 2:
[0025] Please see Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: the outer surface of the alloy steel layer 51 is bonded to the inner surface of the polymer material layer 52, the outer surface of the polymer material layer 52 is bonded to the inner surface of the chromium alloy layer 53, the outer surface of the hot-dip galvanized layer 61 is bonded to the inner surface of the anti-oxidation layer 62, the outer surface of the anti-oxidation layer 62 is bonded to the inner surface of the acrylic paint layer 63, the pull rod body 1 and the lead hook ring 2 are integrally bent and formed, the material of the lead hook ring 2 is the same as the material of the pull rod body 1, the outer surface of the steel wire base layer 3 is bonded to the inner surface of the toughness layer 4, the outer surface of the toughness layer 4 is bonded to the inner surface of the pressure-boosting layer 5, and the outer surface of the pressure-boosting layer 5 is bonded to the inner surface of the protective layer 6.
[0026] In this embodiment: the alloy steel layer 51 provides higher hardness, resisting wear and scratches. The alloying elements resist corrosion and oxidation, making the steel more durable and extending the compressive strength and corrosion resistance of the guy rod body 1, thus extending its service life. The chromium alloy layer 53 maintains good stability and strength at high temperatures and increases the alloy's oxidation resistance. Chromium forms a dense chromium oxide film on the alloy surface, which effectively prevents oxygen and other corrosive substances from contacting the alloy interior, thereby preventing oxidation and corrosion. The guy rod body 1 is a key component for "tensile stability" in overhead lines. Through the guy rod body 1 and the ground anchor, the external forces on the tower are safely transferred to the ground, ensuring the stable operation of the power line.
[0027] The working principle of the bending-resistant wire rod provided by this utility model is as follows:
[0028] Implementation steps for the first innovation point:
[0029] Step 1: The acrylic paint layer 63 provides strong weather resistance and corrosion resistance, making it suitable for outdoor use. It forms a protective film on the surface of the pull rod body 1, preventing ultraviolet radiation and chemical corrosion, thus increasing the strength and corrosion resistance of the pull rod body 1.
[0030] The second step: The core function of the hot-dip galvanized layer 61 and the anti-oxidation layer 62 is to prevent metal corrosion. Zinc reacts with oxygen and moisture in the natural environment to form a dense protective film of zinc oxide or basic zinc carbonate, which effectively isolates the external corrosive medium from contact with the base metal, thereby greatly reducing the corrosion rate. This protective film is particularly effective in humid or salty environments, extending the service strength and corrosion resistance of the draw bar body 1.
[0031] Implementation steps for the second innovation point:
[0032] Step 1: By setting the alloy steel layer 51, the hardness is higher, which can resist wear and scratches. The alloy elements can resist corrosion and oxidation, making the steel more durable, extending the compressive strength and corrosion resistance of the pull rod body 1, and extending the service life of the pull rod body 1.
[0033] Step 2: By setting the chromium alloy layer 53, it can maintain good stability and strength in high temperature environment, and also increase the oxidation resistance of the alloy. Chromium can form a dense chromium oxide film on the surface of the alloy. This film can effectively prevent oxygen and other corrosive substances from contacting the interior of the alloy, thereby preventing the alloy from being oxidized and corroded.
[0034] The third step: The guy rod body 1 is a key component for "tensile stability" in overhead lines. Through the guy rod body 1 and the ground anchor, the external force on the tower is safely transferred to the ground, ensuring the stable operation of the power line.
[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A bending-resistant guy bar, comprising a guy bar body (1), characterized in that: Both sides of the pull rod body (1) are provided with lead hook rings (2). The pull rod body (1) includes a steel wire base layer (3). The outer surface of the steel wire base layer (3) is provided with a toughness layer (4). The outer surface of the toughness layer (4) is provided with a pressure-increasing layer (5). The outer surface of the pressure-increasing layer (5) is provided with a protective layer (6). The protective layer (6) includes a hot-dip galvanized layer (61). The outer surface of the hot-dip galvanized layer (61) is provided with an anti-oxidation layer (62). The outer surface of the anti-oxidation layer (62) is provided with an acrylic paint layer (63). The pressure-increasing layer (5) includes an alloy steel layer (51). The outer surface of the alloy steel layer (51) is provided with a polymer material layer (52). The outer surface of the polymer material layer (52) is provided with a chromium alloy layer (53).
2. The bending-resistant drawbar according to claim 1, characterized in that, The outer surface of the alloy steel layer (51) is bonded to the inner surface of the polymer material layer (52), and the outer surface of the polymer material layer (52) is bonded to the inner surface of the chromium alloy layer (53).
3. The bending-resistant drawbar according to claim 1, characterized in that, The outer surface of the hot-dip galvanized layer (61) is bonded to the inner surface of the anti-oxidation layer (62), and the outer surface of the anti-oxidation layer (62) is bonded to the inner surface of the acrylic paint layer (63).
4. The bending-resistant drawbar according to claim 1, characterized in that, The pull rod body (1) and the lead hook ring (2) are integrally bent and formed, and the material of the lead hook ring (2) is the same as that of the pull rod body (1).
5. The bending-resistant drawbar according to claim 1, characterized in that, The outer surface of the steel wire base layer (3) is bonded to the inner surface of the toughness layer (4), and the outer surface of the toughness layer (4) is bonded to the inner surface of the pressure layer (5).
6. The bending-resistant drawbar according to claim 1, characterized in that, The outer surface of the pressurizing layer (5) is bonded to the inner surface of the protective layer (6).