Elastic metal wire clamp and spacer
The all-metal elastic metal clamp, with its elastic metal element and conductor protective layer, solves the problem of easy aging of the rubber in the spacer bar clamp, achieving stable conductor fixation and preventing fretting damage in corrosive environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-04-07
AI Technical Summary
Existing spacer bar clamps rely on rubber components that are prone to aging and failure, leading to decreased grip strength and wire damage, especially noticeable in corrosive environments.
The flexible metal clamp features an all-metal design, including a fixed clamp body, a movable clamp cover, and a flexible gripping assembly. It utilizes the clamp's metal elastic element and wire protection layer to provide elastic cushioning, prevent rubber aging, and protect against corrosion through the metal material.
Provides continuous grip to prevent damage to the conductor surface, adapts to the thermal expansion and contraction of the conductor, extends service life, and is suitable for flexible fixation and prevention of fretting damage of conductors in corrosive environments.
Smart Images
Figure CN121813231A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power fittings technology, specifically to an elastic metal clamp and a spacer bar. Background Technology
[0002] Spacer bars for overhead lines are important hardware components in ultra-high voltage and extra-high voltage transmission lines. Their core function is to secure multiple split conductors of the same phase, preventing them from whipping, colliding, or tangling with each other.
[0003] In ultra-high voltage and extra-high voltage power transmission, two-split, four-split, six-split, eight-split, or even more-split conductors are often used to suppress corona loss and increase transmission capacity. However, under the influence of external forces such as wind, these parallel sub-conductors may sway asynchronously, easily colliding, causing conductor wear, strand breakage, and even line tripping. Spacers prevent sub-conductors from colliding (whipping). Under wind, the vibration frequency and amplitude of each sub-conductor may differ, making them prone to collisions. Collisions cause surface damage to the conductors, producing burrs or notches, triggering partial discharge (corona discharge), accelerating conductor corrosion and aging, and in severe cases, potentially leading to conductor breakage. Spacers also suppress wind vibration, and many spacers function as dampers. When wind blows across the conductor, it generates alternating vortices (Karman vortex streets) on the leeward side, causing continuous high-frequency, low-amplitude vibrations (wind vibration). This prevents long-term wind vibration from causing conductor fatigue and breakage at the suspension clamp. The damping elements on the spacer bar (usually hinged weights or elastic rubber components) can absorb this vibration energy and effectively suppress vibration. Traditional spacer bar clamps rely on rubber components for flexible cushioning, but they are prone to aging and failure in the corrosive environment of coastal salt spray, leading to decreased grip strength and conductor damage.
[0004] In summary, the existing spacer bar clamps rely on rubber components that are prone to aging and failure, leading to decreased grip strength and wire damage. Summary of the Invention
[0005] To address the problem that existing spacer bar clamps rely on rubber components that are prone to aging and failure, leading to decreased grip strength and wire damage, this invention is proposed.
[0006] The objective of this invention is achieved through the following technical solution: In a first aspect, the present invention provides an elastic metal wire clamp, comprising a fixed wire clamp body, a movable wire clamp cover plate, and a flexible gripping component; One end of the movable wire clamp cover plate is hinged to one end of the fixed wire clamp body to form a clamp-shaped structure with jaws; the other end of the fixed wire clamp body is provided with a through hole for external connection; The number of flexible gripping components is two sets, and they are respectively fixed on both sides of the jaw to form wire fixing holes; The flexible gripping assembly includes a wire clamp metal elastic element and a wire protection layer mounted on the wire clamp metal elastic element; the wire clamp metal elastic element is fixedly connected to the fixed wire clamp body or the movable wire clamp cover plate. When the fixed clamp body and the movable clamp cover plate are fixed and locked with fasteners, the metal elastic element of the clamp undergoes elastic deformation, and the wire protective layer provides elastic buffering for the wire.
[0007] Preferably, the metal elastic element of the wire clamp has an arc-shaped plate structure, the middle part of the metal elastic element of the wire clamp is fixed inside the jaws of the fixed wire clamp body or the movable wire clamp cover plate, and both ends of the metal elastic element of the wire clamp press against the conductor protective layer.
[0008] Furthermore, the metal elastic element of the wire clamp is subjected to galvanizing for corrosion protection.
[0009] Preferably, the flexible gripping assembly further includes rivets; a plurality of rivets pass through the sidewall of the fixed clamp body or the movable clamp cover plate to fix the metal elastic element of the clamp.
[0010] Preferably, the flexible gripping assembly further includes an anti-abrasion pad, which is installed between the wire clamp's metal elastic element and the wire protection layer.
[0011] Preferably, the conductor protective layer is made of aluminum PVC sheet, and a semi-circular groove is provided on one side of the aluminum PVC sheet, and the two semi-circular grooves together form a conductor fixing hole.
[0012] Preferably, the fixed clamp body and the movable clamp cover plate are hinged by a pin.
[0013] Preferably, the fastener is a bolt, which is sequentially passed through the through hole at the other end of the movable clamp cover plate and the through hole in the middle of the fixed clamp body for fixed connection.
[0014] Preferably, both the fixed clamp body and the movable clamp cover are made of cast aluminum.
[0015] In a second aspect, the present invention provides a spacer bar, comprising a spacer bar body and a plurality of elastic metal wire clips as described in any of the above claims. One end of each of the several elastic metal clamps is fixed to the spacer bar body, and the other end of each of the several elastic metal clamps respectively clamps and fixes the wires. The elastic metal element in the elastic metal clamp undergoes elastic deformation when the fixed clamp body and the movable clamp cover plate are fastened and locked to the wire by fasteners, and provides elastic buffering to the wire through the wire protective layer.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides an elastic metal wire clamp and a spacer bar, which consists of flexible gripping components fixed to the jaws of both the fixed wire clamp body and the movable wire clamp cover. One end of the movable wire clamp cover is hinged to one end of the fixed wire clamp body to form a clamp-like structure with jaws. The other end of the fixed wire clamp body has a through hole for external connection. Two sets of flexible gripping components are fixed to both sides of the jaws to form wire fixing holes. Each flexible gripping component includes a wire clamp metal elastic element and a wire protective layer mounted on the wire clamp metal elastic element. When the fixed wire clamp body and the movable wire clamp cover are fastened and locked to the wire by fasteners, the wire clamp metal elastic element undergoes elastic deformation, and the wire protective layer provides elastic cushioning to the wire. The wire protective layer directly contacts the wire, preventing damage to the wire surface. The elastic cushioning layer formed by the wire clamp metal elastic element provides continuous gripping force through elastic deformation, adapting to the thermal expansion and contraction of the wire. By using a metal elastic element, the problem of non-metallic materials being easily corroded, leading to decreased grip and wire damage is completely avoided. The elasticity provided by the metal elastic element of the wire clamp allows the wire to swing slightly to release stress, provides stable grip to prevent wire displacement, and is suitable for flexible fixation and prevention of fretting damage to wires in corrosive environments. Attached Figure Description
[0017] Figure 1 This is a cross-sectional schematic diagram of an elastic metal wire clamp according to Embodiment 1 of the present invention; Figure 2 This is a three-dimensional schematic diagram of an elastic metal wire clamp according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the flexible gripping component structure in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the wire clamp metal elastic element and anti-wear pad structure in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the structure of the wire clamp metal elastic element in Embodiment 1 of the present invention.
[0018] In the diagram: 1 is the main body of the fixed wire clamp; 2 is the cover plate of the movable wire clamp; 3 is the rivet; 4 is the bolt; 5 is the metal elastic element of the wire clamp; 6 is the anti-wear pad; 7 is the conductor protective layer. Detailed Implementation
[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.
[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0024] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0025] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0026] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0027] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.
[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0029] Example 1: A type of flexible metal wire clip, such as Figure 1 and Figure 2 As shown, it includes a fixed clamp body 1, a movable clamp cover plate 2, and a flexible gripping assembly.
[0030] One end of the movable wire clamp cover plate 2 is hinged to one end of the fixed wire clamp body 1 to form a clamp-shaped structure with jaws; the other end of the fixed wire clamp body 1 is provided with a through hole for external connection; the number of flexible gripping components is two sets, and they are respectively fixed on both sides of the jaws to form wire fixing holes.
[0031] The flexible gripping assembly includes a wire clamp metal elastic element 5 and a wire protection layer 7 installed on the wire clamp metal elastic element 5; the wire clamp metal elastic element 5 is fixedly connected to the fixed wire clamp body 1 or the movable wire clamp cover plate 2.
[0032] When the fixed clamp body 1 and the movable clamp cover plate 2 are fixed and locked with fasteners, the clamp metal elastic element 5 undergoes elastic deformation, and the wire protective layer 7 provides elastic buffering for the wire.
[0033] This invention provides a flexible metal wire clamp. A wire protective layer and a metal elastic element are sequentially installed on a fixed wire clamp body and a movable wire clamp cover plate along the circumferential direction of the clamped wire. The metal elastic element forms an elastic buffer layer. When the fixed wire clamp body and the movable wire clamp cover plate clamp the wire, the metal elastic element undergoes elastic deformation, providing elastic force to the wire through the wire protective layer. The wire protective layer directly contacts the wire, preventing damage to the wire surface. The elastic buffer layer provides continuous gripping force through elastic deformation, accommodating the thermal expansion and contraction of the wire. The use of a metal elastic element completely avoids the problem of corrosion of non-metallic materials, which leads to decreased gripping force and wire damage. The elasticity provided by the metal elastic element allows for slight swaying of the wire to release stress, providing stable gripping force to prevent wire displacement. It is suitable for flexible fixing and prevention of fretting damage to wires in corrosive environments.
[0034] This invention discloses a clamp structure for an all-metal corrosion-resistant spacer bar used in high-voltage transmission lines, which is particularly suitable for the flexible fixing and prevention of fretting damage to conductors in corrosive environments. It avoids the problems of traditional spacer bar clamps that rely on rubber components for flexible buffering, which are prone to aging and failure in corrosive coastal salt spray environments, leading to decreased gripping strength and conductor damage.
[0035] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment of the invention, both the fixed clamp body 1 and the movable clamp cover plate 2 have arc-shaped notches. One end of the fixed clamp body 1 has a through hole for fixing and connecting the spacer bar body, and the other end of the fixed clamp body 1 is rotatably connected to one end of the movable clamp cover plate 2. The conductor protection layer 7 and the clamp metal elastic element 5 are respectively installed on the arc-shaped notches on the fixed clamp body 1 and the movable clamp cover plate 2. The arc-shaped notches on the clamp body 1 and the movable clamp cover plate 2 form a clamp-like structure with jaws.
[0036] Specifically, such as Figures 3 to 5 As shown, in this embodiment of the invention, the wire clamp metal elastic element 5 has an arc-shaped plate structure. The middle part of the wire clamp metal elastic element 5 is fixed inside the jaws of the fixed wire clamp body 1 or the movable wire clamp cover plate 2, that is, the wire clamp metal elastic element 5 is located at the connection part between the fixed wire clamp body 1 and the conductor protection layer 7 and the connection part between the movable wire clamp cover plate 2 and the conductor protection layer 7, respectively. Both ends of the wire clamp metal elastic element 5 press against the conductor protection layer 7. The wire clamp metal elastic element 5 provides elasticity when the fixed wire clamp body 1 and the movable wire clamp cover plate 2 surround and fix the conductor through the conductor protection layer 7.
[0037] Further explanation is needed, such as Figure 5As shown, the wire clamp metal elastic element 5 in this embodiment of the invention is galvanized for corrosion protection. The elastic element in this embodiment uses corrosion-resistant metal, which can prevent corrosion and is suitable for flexible fixing of wires and prevention of fretting damage in corrosive environments.
[0038] Specifically, such as Figure 1 As shown, in this embodiment of the invention, the flexible gripping assembly also includes rivets 3; a plurality of rivets 3 pass through the side wall of the fixed clamp body 1 or the movable clamp cover plate 2 to fix the clamp metal elastic element 5.
[0039] It should be further explained that both the fixed clamp body 1 and the movable clamp cover plate 2 have several through holes, and the middle of the clamp metal elastic element 5 also has several corresponding through holes; the rivets 3 pass through the through holes on the clamp metal elastic element 5 and the fixed clamp body 1 in sequence for riveting and fixing. The rivets 3 pass through the through holes on the clamp metal elastic element 5 and the movable clamp cover plate 2 in sequence for riveting and fixing. The clamp metal elastic element 5 is respectively riveted and fixedly installed on the fixed clamp body 1 and the movable clamp cover plate 2.
[0040] Specifically, in this embodiment of the invention, the conductor protective layer 7 is made of aluminum PVC sheet. A semi-circular groove is formed on one side of the aluminum PVC sheet, and the two semi-circular grooves together form a conductor fixing hole. Both ends of the two semi-circular grooves are provided with arc-shaped chamfers. By using aluminum PVC sheet for the conductor protective layer 7, the aluminum PVC sheet directly contacts the conductor, and its soft properties prevent damage to the conductor surface and enhance frictional grip.
[0041] Specifically, in this embodiment of the invention, the fixed clamp body 1 and the movable clamp cover plate 2 are made of cast aluminum. In this embodiment of the invention, by adopting an all-metal corrosion-resistant design, in addition to the cast aluminum clamp, the clamp's metal elastic element 5 is made of corrosion-resistant metal (galvanized spring steel), completely avoiding the problem of rubber aging.
[0042] Specifically, such as Figure 1 As shown, in this embodiment of the invention, the fixed wire clamp body 1 and the movable wire clamp cover plate 2 are hinged together by a pin.
[0043] Specifically, such as Figure 1 As shown, in this embodiment of the invention, the fastener is a bolt 4, which passes through the through hole at the other end of the movable clamp cover plate 2 and the through hole in the middle of the fixed clamp body 1 for fixed connection.
[0044] Specifically, such as Figure 1 and Figure 4 As shown, in this embodiment of the invention, the elastic metal clamp further includes an anti-wear pad 6, which is installed between the metal elastic element 5 of the clamp and the conductor protective layer 7.
[0045] Specifically, such as Figure 3 As shown, in this embodiment of the invention, a three-layer flexible gripping assembly is formed by sequentially setting a wire protection layer 7, an anti-wear layer (i.e., an anti-wear pad 6), and an elastic buffer layer (i.e., a wire clamp metal elastic element 5); wherein, the wire protection layer 7 is in direct contact with the wire, and a soft material is used to avoid damage to the surface of the wire.
[0046] An anti-wear layer (i.e., anti-wear pad 6) is placed between the conductor protection layer 7 and the elastic buffer layer to reduce frictional loss between the conductor protection layer and the elastic buffer layer and extend the service life of the wire clamp.
[0047] The elastic buffer layer (i.e., the metal elastic element 5 of the wire clamp) provides continuous gripping force through elastic deformation to adapt to the thermal expansion and contraction of the wire.
[0048] In practical application, the elastic metal clamp of this invention uses an anti-wear pad 6 (i.e., anti-wear layer) to adhere to the back of the aluminum PVC sheet (i.e., conductor protection layer 7); rivets 3 are used to fix the arc-shaped spring steel plate (i.e., clamp metal elastic element 5) to the inside of the jaws of the fixed clamp body 1 or the movable clamp cover plate 2, pressing the aluminum PVC sheet assembly (i.e., conductor protection layer 7 and anti-wear layer); the movable clamp cover plate 2 is sealed and closed, so that the jaws on the fixed clamp body 1 and the movable clamp cover plate 2 are closed, and the semi-circular groove of the aluminum PVC sheet (i.e., conductor protection layer 7) is closed to form a conductor fixing hole, and bolts 4 are used to pass through the movable clamp cover plate 2 and the fixed clamp body 1 in sequence for fastening.
[0049] The spring steel plate (i.e., the metal elastic element 5 of the wire clamp) presses against the back of the aluminum rubber sheet (i.e., the conductor protection layer 7), providing continuous gripping force through elastic deformation to accommodate the thermal expansion and contraction of the conductor. An anti-wear layer (i.e., an anti-wear pad 6 made of stainless steel) is placed between the spring steel plate and the aluminum rubber sheet to reduce friction loss and extend service life. The spring steel plate is anchored to the inner wall of the fixed wire clamp body 1 or the movable wire clamp cover plate 2 by rivets 3 to ensure structural stability.
[0050] In this embodiment of the invention, the metal elastic element 5 of the wire clamp is made of spring steel plate; the size of the spring steel plate is ≥70mm×30mm×3mm (verified by simulation to meet the requirements of gripping force and strength), and its curvature and thickness are determined according to the continuous gripping force to be provided by the metal elastic element of the wire clamp. The planar dimensions of the spring steel plate are limited to the jaws of the fixed wire clamp body 1 or the movable wire clamp cover plate 2 to be installed, and the planar projection size of the metal elastic element 5 of the wire clamp does not exceed the planar projection size of the jaws of the fixed wire clamp body 1 or the movable wire clamp cover plate 2.
[0051] The elastic metal wire clamp in this embodiment of the invention is made of all-metal corrosion-resistant material with no rubber parts, which increases the service life by more than 50%; the wire micro-motion buffer and spring steel plate (wire clamp metal elastic element 5) allow the wire to swing slightly by ±5°, releasing the stress of wind vibration; the anti-damage design, aluminum rubber tile protects the surface of the wire, and wear-resistant pad reduces internal wear.
[0052] Example 2: Based on the same inventive concept, the present invention also provides a spacer, comprising: Includes a spacer bar body and several elastic metal wire clips as described in Embodiment 1; One end of each of the several elastic metal clamps is fixed to the spacer bar body, and the other end of each of the several elastic metal clamps respectively clamps and fixes the wire.
[0053] The elastic metal element 5 in the elastic metal clamp undergoes elastic deformation when the fixed clamp body 1 and the movable clamp cover plate 2 clamp the wire together, and provides elastic force to the wire through the wire protective layer 7.
[0054] In this embodiment of the invention, the elastic metal wire clamp distributes the clamping force evenly around the circumference of the conductor. The conductor protective layer 7 is arc-shaped, closely matching the outer diameter of the conductor, increasing the contact area between the conductor protective layer 7 and the conductor, and avoiding high stress points caused by "line contact" or "point contact". To prevent damage to the conductor surface, the elastic buffer layer provides continuous gripping force through elastic deformation, adapting to the thermal expansion and contraction of the conductor.
[0055] It should be further explained that the spacer in the embodiments of the present invention allows the conductor to swing slightly within a certain range to cope with the conductor swaying caused by factors such as wind force. It can adapt to strong wind conditions, and the all-metal anti-corrosion structure is suitable for conductor fixing and vibration protection in corrosive environments, increasing the service life of the spacer and filling the gap in the field of all-metal anti-corrosion spacers with flexible buffering capabilities.
[0056] It should be further explained that the spacers in this embodiment of the invention can be arranged in an equidistant or symmetrical manner. The number of spacers installed depends on the voltage level of the transmission line, the number of conductor splits, the span length, and local meteorological conditions. The higher the voltage, the more conductor splits, the longer the span, and the more complex the wind conditions, the more spacers are required. Spacers can change the vibration mode and frequency of the transmission line, dispersing vibration energy over a longer span, thereby reducing the amplitude and damage of vibration. They can effectively absorb the energy of light wind vibrations and provide additional vibration protection.
[0057] 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 be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.
Claims
1. A flexible metal wire clip, characterized in that, It includes a fixed wire clamp body (1), a movable wire clamp cover plate (2), and a flexible gripping assembly; One end of the movable wire clamp cover plate (2) is hinged to one end of the fixed wire clamp body (1) to form a clamp-shaped structure with jaws; the other end of the fixed wire clamp body (1) is provided with a through hole for external connection; The number of flexible gripping components is two sets, and they are respectively fixed on both sides of the jaw to form wire fixing holes; The flexible gripping assembly includes a wire clamp metal elastic element (5) and a wire protection layer (7) mounted on the wire clamp metal elastic element (5); the wire clamp metal elastic element (5) is fixedly connected to the fixed wire clamp body (1) or the movable wire clamp cover plate (2); When the fixed clamp body (1) and the movable clamp cover plate (2) are fastened and locked with fasteners, the clamp metal elastic element (5) undergoes elastic deformation, and provides elastic buffering for the wire through the wire protection layer (7).
2. The elastic metal wire clamp according to claim 1, characterized in that, The wire clamp metal elastic element (5) has an arc-shaped plate structure. The middle part of the wire clamp metal elastic element (5) is fixed inside the jaws of the fixed wire clamp body (1) or the movable wire clamp cover plate (2). Both ends of the wire clamp metal elastic element (5) press the wire protective layer (7).
3. The elastic metal wire clamp according to claim 1, characterized in that, The metal elastic element (5) of the wire clamp is galvanized for corrosion protection.
4. The elastic metal wire clamp according to claim 1, characterized in that, The flexible gripping assembly also includes rivets (3); several rivets (3) pass through the side wall of the fixed clamp body (1) or the movable clamp cover plate (2) respectively to fix the clamp metal elastic element (5).
5. The elastic metal wire clamp according to claim 1, characterized in that, The flexible gripping assembly also includes an anti-abrasion pad (6), which is installed between the wire clamp metal elastic element (5) and the wire protection layer (7).
6. The elastic metal wire clamp according to claim 1, characterized in that, The conductor protective layer (7) is made of aluminum PVC tile, and a semi-circular groove is provided on one side of the aluminum PVC tile. The two semi-circular grooves together form a conductor fixing hole.
7. The elastic metal wire clamp according to claim 1, characterized in that, The fixed clamp body (1) and the movable clamp cover plate (2) are hinged by a pin.
8. The elastic metal wire clamp according to claim 1, characterized in that, The fastener is a bolt (4), which passes through the through hole at the other end of the movable clamp cover plate (2) and the through hole in the middle of the fixed clamp body (1) for fixed connection.
9. The elastic metal wire clamp according to claim 1, characterized in that, Both the fixed clamp body (1) and the movable clamp cover plate (2) are made of cast aluminum.
10. A spacer bar, characterized in that, Includes a spacer bar body and several elastic metal wire clips as described in any one of claims 1 to 9; One end of each of the several elastic metal clamps is fixed to the spacer bar body, and the other end of each of the several elastic metal clamps respectively clamps and fixes the wire.