A high-altitude cable clamping and installation structure to prevent cable detachment

Abstract

This invention belongs to the technical field of cable installation tools, specifically a high-altitude cable clamping and installation structure to prevent cable detachment. It includes a bottom clamp and a top clamp, with the top clamp positioned above the bottom clamp. A tension spring is installed between the top and bottom clamps, causing the top clamp to clamp the cable downwards under the action of the spring. Arc-shaped clamping grooves are formed on the opposing surfaces of both the bottom and top clamps, and mounting planes are provided at the left and right ends of the opposing surfaces. The bottom clamp includes an upper support clamp and a lower fixing seat. The support clamp is sleeved on the upper part of the fixing seat and can move up and down within a limited range on the fixing seat. This invention achieves stable cable clamping, dynamic adaptation, and damage protection through an integrated design of elastic pre-tightening, double limiting, and buffer energy absorption. It is suitable for various installation scenarios such as transmission towers and utility pole crossarms, and can withstand cable installation in harsh environments such as high and low temperatures, strong winds, and salt spray.

Description

Technical Field

[0001] This invention relates to the field of cable installation tools, specifically to a high-altitude cable clamping and installation structure that prevents cable from falling off. Background Technology

[0002] In modern power transmission systems, aerial cables serve as the core carrier, bearing the crucial responsibility of efficiently delivering electrical energy to various regions. Different types of aerial cables, due to their unique structure and performance characteristics, are widely used in various scenarios.

[0003] Traditional high-altitude cable clamping structures have defects in their fixing methods. They mostly use simple bolt fastening or clamp-type rigid fixing. Long-term wind and vibration cause wear on the cable sheath. Especially when temperature differences cause the cable to expand and contract, the clamping force fluctuates more significantly.

[0004] When cables are subjected to factors such as wind force, their own weight, and thermal expansion and contraction, localized stress concentration becomes severe. In some high-altitude areas, the large temperature difference between day and night leads to frequent thermal expansion and contraction of cables, which traditional clamping structures cannot adapt to, resulting in unstable clamping force. In complex environments, such as tower swaying caused by natural disasters like earthquakes, traditional structures cannot provide sufficient clamping force and stability, potentially leading to serious accidents such as cable breakage, posing a significant threat to the safe operation of the power system.

[0005] Furthermore, the traditional clamping structure has an unreasonable contact method with the cable, which easily generates friction between them when the cable sways. Prolonged friction will gradually wear down the cable sheath, exposing the internal conductors. This not only reduces the cable's insulation performance but may also cause short circuits and other faults, significantly shortening the cable's lifespan and increasing the maintenance costs and safety hazards of the power system.

[0006] If a cable falls off or breaks, it will cause a power outage, affecting the normal power supply of a large area and causing great inconvenience to people's lives and production. Therefore, we propose a high-altitude cable clamping and installation structure to prevent cable detachment. Summary of the Invention

[0007] The purpose of this invention is to provide a high-altitude cable clamping and installation structure to prevent cable detachment, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a high-altitude cable clamping and installation structure for preventing cable detachment, comprising a bottom clamp and a top clamp, wherein the top clamp is disposed above the bottom clamp. A tension spring is provided between the top clamp and the bottom clamp, causing the top clamp to clamp the cable downward under the action of the tension spring. Arc-shaped clamping grooves are provided on the opposite surfaces of the bottom clamp and the top clamp, and mounting planes are provided at the left and right ends of the opposite surfaces of the bottom clamp and the top clamp.

[0009] The bottom clamp includes an upper support clamp and a lower fixing seat. The support clamp is sleeved on the upper part of the fixing seat and can move up and down on the fixing seat within a limited range. The mounting plane of the bottom clamp has symmetrically formed limit grooves, and the mounting plane of the top clamp has a downwardly extending docking base.

[0010] The bottom clamp has an energy-absorbing pad and a lifting spring inside its cavity. The top of the lifting spring has an upwardly extending top rod. The lifting spring and the top rod are used to lift the cable in the opposite direction.

[0011] Preferably, the bottom clamp has symmetrically arranged outwardly extending bolt plates on the left and right sides of the bottom. The bolt plates are fixed to the cable installation position of the transmission tower or transmission equipment and locked in place with bolts.

[0012] The top left and right ends of the fixed base are provided with limiting blocks, and the inner cavity of the support clip is provided with a limiting groove to block the limiting blocks, preventing the support clip from detaching from the fixed base. The support clip is sleeved on the outside of the fixed base, and rainwater flows naturally downward along the support clip.

[0013] Preferably, the bottom of the docking base is provided with a downwardly extending T-shaped slide rod, and the T-shaped slide rod is slidably inserted into the limiting slide groove. The limiting slide groove is also a T-shaped structure, and the length of the limiting slide groove is four-fifths of the length of the installation plane. The T-shaped slide rod is guided to be installed quickly by the limited length, preventing the T-shaped slide rod from coming off.

[0014] Preferably, multiple sets of locking bolts are symmetrically arranged on the left and right sides of the bottom clamp, and the locking bolts fix the T-shaped slide rod and the bottom clamp together inward. The locking bolts are dovetail bolts.

[0015] Preferably, tension springs are provided in the inner cavities on both sides of the top clamp, and the bottom of the tension springs is fixed to the docking base. Multiple sets of tension springs are provided on the left and right sides to form spring groups, so that the top clamp has a stronger clamping force.

[0016] When the cable sways, the top clamp provides a buffering effect, and the bottom clamp also provides a buffering effect. The cable expands the buffer space within the upper and lower clamps, reducing the hard wear caused by the cable swaying and compensating for the force generated by the swaying.

[0017] Preferably, the energy-absorbing pad is disposed within the inner cavity of the support clamp, and the shape of the energy-absorbing pad matches the shape of the inner cavity of the support clamp. The energy-absorbing pad is a flexible rubber block, and its bottom is located on the top surface of the fixing base. When the support clamp moves downward due to pressure, the compression force between the energy-absorbing pad and the fixing base is used to achieve buffering.

[0018] Preferably, the top surface of the fixing base is horizontally provided with multiple sets of lifting springs, and the top end of the push rod extends into the clamping groove and contacts the cable surface. When the support clamp moves downward under force, the push rod lifts the cable upward, applying a reverse force to the cable to prevent excessive downward pressure when the cable sways, and the lifting spring at the bottom of the push rod also buffers the force on the cable. The energy-absorbing pad has receiving grooves near the lifting springs to limit the movement of the lifting springs.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention achieves stable clamping, dynamic adaptation and damage protection of cables through an integrated design of elastic pre-tightening, double limiting and buffer energy absorption. It is suitable for various installation scenarios such as transmission towers and crossarms of utility poles, and can withstand cable installation in harsh environments such as high and low temperatures, strong winds and salt spray.

[0021] 2. The structure provided by this invention has a unique working principle in buffering energy absorption and reducing hard wear caused by cable swaying. When the cable sways due to factors such as wind force and line vibration, the tension spring between the top and bottom clamps provides buffering force, reducing rigid collisions between the cable and the clamps. The energy-absorbing pad and the lifting spring in the inner cavity of the bottom clamp also work together. The energy-absorbing pad absorbs the energy generated by the cable swaying through its own flexible deformation, while the lifting spring lifts the cable upward through the top rod, preventing the cable from being excessively compressed, thereby effectively reducing hard wear caused by cable swaying.

[0022] 3. It can meet the needs of various installation scenarios. On transmission towers, the bottom clamp can be firmly fixed to the angle steel of the tower using bolt plates, while the top clamp works in conjunction with the bottom clamp to achieve stable cable clamping. Whether it's a single-circuit or multi-circuit transmission tower, the structure of this invention can easily adapt, ensuring safe and reliable cable installation on different tower structures. Similarly, on utility pole crossarms, the bottom clamp can be fixed to the crossarm using bolt plates, providing stable support for the cables on the pole. This versatility makes the structure of this invention widely applicable in the construction and renovation of power transmission networks, meeting the cable installation needs of different regions and types of power facilities.

[0023] The embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is the front view of the present invention.

[0025] Figure 2 This is a front view of the stretched state of the present invention.

[0026] Figure 3 This is a rear view of the invention in its stretched state.

[0027] Figure 4 This is a three-dimensional view of the present invention in a stretched state.

[0028] Figure 5 This is a cross-sectional view of the bottom clamp of the present invention.

[0029] In the diagram: 1. Bottom clamp, 1-1. Bolt plate, 1-2. Support clamp, 1-3. Fixing seat, 1-4. Limiting groove, 1-5. Locking bolt, 1-6. Energy-absorbing pad, 1-7. Lifting spring, 1-8. Top rod;

[0030] 2. Top clamp, 2-1 tension spring, 2-2 docking base. Detailed Implementation

[0031] See Figure 1-5 A high-altitude cable clamping and installation structure for preventing cable detachment includes a bottom clamp 1 and a top clamp 2. The top clamp 2 is positioned above the bottom clamp 1, and the top clamp 2 and the bottom clamp 1 form a complete cable clamping structure. A tension spring 2-1 is provided between the top clamp 2 and the bottom clamp 1, so that the top clamp 2 is always pulled downward under the action of the tension spring 2-1, clamping the cable downward, while the cable clamping structure also has a certain degree of elasticity.

[0032] The bottom clamp 1 has symmetrically arranged bolt plates 1-1 extending outward on both sides of its bottom. The bolt plates 1-1 are fixed to the cable installation position of the transmission tower or transmission equipment and are locked in place with bolts.

[0033] The bottom clamp 1 includes an upper support clamp 1-2 and a lower fixing seat 1-3, with bolt plates 1-1 arranged on the left and right sides of the fixing seat 1-3.

[0034] The support clip 1-2 is fitted onto the upper part of the fixed base 1-3, and the support clip 1-2 can move up and down on the fixed base 1-3 within a limited range. Limiting blocks are provided at the top left and right ends of the fixed base 1-3, and a limiting groove is provided in the inner cavity of the support clip 1-2 to block the limiting blocks, preventing the support clip 1-2 from detaching from the connection with the fixed base 1-3. Furthermore, the support clip 1-2 is fitted onto the outside of the fixed base 1-3, allowing rainwater to flow naturally downwards along the support clip 1-2 without flowing to the connection point, effectively preventing rainwater intrusion.

[0035] Both the bottom clamp 1 and the top clamp 2 have arc-shaped clamping grooves on their opposite surfaces, which clamp the cable inward. Mounting surfaces are also provided at the left and right ends of the opposite surfaces of the bottom clamp 1 and the top clamp 2. A limiting groove 1-4 is symmetrically provided on the mounting surface of the bottom clamp 1, and a downward-extending docking base 2-2 is provided on the mounting surface of the top clamp 2. A downward-extending T-shaped sliding rod is provided at the bottom of the docking base 2-2, and the T-shaped sliding rod slides into the limiting groove 1-4. The limiting groove 1-4 is also a T-shaped structure, and its length is four-fifths of the length of the mounting surface. This limited length guides the T-shaped sliding rod for quick installation and prevents it from detaching.

[0036] Multiple sets of locking bolts 1-5 are symmetrically arranged on the left and right sides of the bottom clamp 1. The locking bolts 1-5 fix the T-shaped slide rod to the bottom clamp 1 inward. The locking bolts 1-5 are dovetail bolts. By removing the locking bolts 1-5, the top clamp 2 can be removed from the bottom clamp 1, making it convenient to place the cable on the bottom clamp 1. After placing the cable, the top clamp 2 is then connected and fixed to the bottom clamp 1, which can quickly complete the clamping and locking, which is very convenient.

[0037] Tension springs 2-1 are installed in the inner cavities on both sides of the top clamp 2, and the bottom of the tension springs 2-1 is fixed to the docking base 2-2. Under the action of the tension springs 2-1, the top clamp 2 is always pulled downward, so that it is tightly clamped above the cable.

[0038] Multiple sets of tension springs 2-1 are installed on both the left and right sides to form spring groups, giving the top clamp 2 a stronger clamping force. When the cable sways, the top clamp 2 provides a buffering effect for the cable, while the bottom clamp 1 also has a buffering effect. The cable expands the buffer space within the upper and lower clamps, reducing the hard wear caused by the cable swaying, compensating for the force generated by the swaying, and improving the service life of the cable.

[0039] An energy-absorbing pad 1-6 and a lifting spring 1-7 are provided in the inner cavity of the bottom clamp 1. The energy-absorbing pad 1-6 is located in the inner cavity of the support clamp 1-2, and the shape of the energy-absorbing pad 1-6 matches the shape of the inner cavity of the support clamp 1-2. The energy-absorbing pad 1-6 is a flexible rubber block, and the bottom of the energy-absorbing pad 1-6 is located on the top surface of the fixing base 1-3.

[0040] When the support clamp 1-2 moves downward due to pressure, the compression force between the energy-absorbing pad 1-6 and the fixed seat 1-3 is used to achieve buffering.

[0041] Multiple sets of lifting springs 1-7 are horizontally arranged on the top surface of the fixed base 1-3. The top of the lifting spring 1-7 is provided with an upwardly extending top rod 1-8. The top end of the top rod 1-8 extends into the clamping groove and contacts the surface of the cable.

[0042] When the support clamp 1-2 moves downward under force, the push rod 1-8 lifts the cable upward and applies a reverse force to the cable to prevent excessive downward pressure when the cable sways. The lifting spring 1-7 at the bottom of the push rod 1-8 also serves to buffer the force on the cable.

[0043] Each of the energy-absorbing pads 1-6 has a receiving groove near the lifting springs 1-7 to limit the movement of the lifting springs 1-7.

[0044] This invention achieves stable clamping, dynamic adaptation, and damage protection of cables through an integrated design of elastic pre-tightening, dual limiting, and buffer energy absorption. It is suitable for various installation scenarios such as transmission towers and utility pole crossarms, and can withstand cable installation in harsh environments such as high and low temperatures, strong winds, and salt spray.

[0045] The support clamp 1-2 is made of glass fiber reinforced nylon through one-piece injection molding, and has an overall U-shaped structure. The main body of the fixing seat 1-3 is made of 304 stainless steel through stamping. It cooperates with the limiting groove in the inner cavity of the support clamp 1-2 to limit the up and down movement of the support clamp 1-2, which ensures buffer space and eliminates the risk of disengagement.

[0046] Support clip 1-2 is sleeved onto the outside of fixing base 1-3, with a clearance of ≤2mm. Water-guiding grooves are provided on the outer surface of support clip 1-2, allowing rainwater to drip naturally along these grooves, preventing it from seeping into the connection area and corroding the bolts and spring assembly. Additionally, silicone sealing rings are provided at the edges of the mating surfaces to further enhance waterproofing and dustproofing.

[0047] Locking bolts 1-5 are equipped with fluororubber washers to enhance sealing and prevent rainwater from entering the chute.

[0048] The surface of the energy-absorbing pads 1-6 is textured with anti-slip material, which enhances the friction with the cable and prevents hard contact from damaging the outer sheath.

[0049] The top of the push rod 1-8 is machined into a hemispherical shape or an arc shape that matches the curvature of the clamping groove, making point contact with the cable surface. This reduces frictional damage and allows the spring to adapt to cable swaying by applying a reverse lifting force to prevent excessive downward pressure.

[0050] Working principle: This invention achieves stable clamping, dynamic adaptation and damage protection of cables through an integrated design of elastic pre-tightening, double limiting and buffer energy absorption. It is suitable for various installation scenarios such as transmission towers and utility pole crossarms, and can withstand cable installation in harsh environments such as high and low temperatures, strong winds and salt spray.

[0051] The bolt plates 1-1 on the left and right sides of the fixing base 1-3 serve as connection interfaces. They are fixed to the preset installation positions such as transmission towers and utility pole crossarms by bolt tightening. The high strength characteristics of 304 stainless steel ensure a stable connection between the overall structure and the installation carrier, avoiding the risk of falling off due to foundation loosening.

[0052] The support clip 1-2 adopts a U-shaped structure and fits onto the outside of the fixing base 1-3 with a clearance of ≤2mm. The outer surface is designed with a water guide groove, allowing rainwater to drip naturally along the groove, preventing it from seeping into the interior and corroding the bolts and springs. At the same time, the silicone sealing ring on the edge of the mating surface and the fluororubber gasket matching the locking bolts 1-5 form a double seal, preventing rainwater and dust from entering the slide and connection parts, thus extending the service life of the components.

[0053] The limiting block at the top of the fixed seat 1-3 precisely matches the limiting groove in the inner cavity of the support clamp 1-2, limiting the up and down movement of the support clamp 1-2. This not only provides space for subsequent buffering but also eliminates the risk of the support clamp 1-2 detaching from the fixed seat 1-3.

[0054] The bottom of the docking base 2-2 of the top clamp 2 is equipped with a T-shaped slide bar. During installation, it is inserted along the T-shaped limiting slide groove 1-4 on the installation plane of the bottom clamp 1 to achieve precise alignment of the upper and lower clamps and ensure that the clamping groove matches the cable position. The length of the slide groove is four-fifths of the installation plane, which guides quick installation and prevents the slide bar from falling off.

[0055] After insertion, the T-shaped slide bar is fixed to the bottom clamp 1 by multiple sets of dovetail locking bolts 1-5 on the left and right sides of the bottom clamp 1, forming a rigid lock and preventing relative displacement of the upper and lower clamps.

[0056] The multiple tension springs 2-1 inside the top clamp 2 are fixed to the bottom of the docking base 2-2. In the natural state, the springs are in a pre-stretched state, applying a continuous downward pulling force to the top clamp 2, so that the arc-shaped clamping groove of the top clamp 2 and the clamping groove of the bottom clamp 1 are tightly attached to the cable surface. The elastic pre-tightening force offsets the gap caused by slight shaking of the cable, thus achieving dynamic clamping.

[0057] To address the issue of high-altitude cables being susceptible to swaying and deformation due to wind and temperature differences, the structure employs a dynamic adaptation design with bidirectional buffering at both ends. Multiple tension springs 2-1 in the top clamp 2 form a spring group. When the cable sways upwards, the springs are further stretched, generating a reverse pulling force to suppress swaying. When the cable is squeezed downwards, the springs contract to release elasticity, avoiding hard contact impact while maintaining stable clamping force and reducing hard wear between the cable and the clamp. The flexible rubber energy-absorbing pad 1-6 inside the support clamp 1-2 has an anti-slip texture. When the cable sways, the energy-absorbing pad 1-6 absorbs the impact force through its own deformation, while simultaneously increasing friction with the cable to prevent relative slippage.

[0058] Multiple sets of lifting springs 1-7 on the top surface of the fixed base 1-3 contact the cable through the top rod 1-8. The top of the top rod 1-8 is hemispherical or arc-shaped to reduce friction damage. When the cable is excessively pressed downward, the lifting springs 1-7 are compressed, generating an upward counter-lifting force to counteract the downward force. At the same time, the springs extend and retract to adapt to the cable's swaying amplitude, preventing the cable from being damaged due to excessive deformation.

[0059] The support clamp 1-2 can move up and down on the fixed base 1-3 in a limited manner. With the limit groove and limit block limiting the stroke, it provides sufficient buffer space for the deformation of the energy absorbing pad 1-6 and the extension and retraction of the lifting spring 1-7, while avoiding excessive movement that could lead to structural instability.

[0060] By integrating rigid fixation, elastic adaptation, and energy absorption, the mechanical locking of the upper and lower clamps and the spring pre-tensioning achieve stable clamping. Multiple sets of tension springs 2-1 at the top, together with the energy-absorbing pads 1-6 and lifting springs 1-7 at the bottom, form a two-way buffer system to adapt to the dynamic changes of the cable. At the same time, through material corrosion protection, structural waterproofing, and detailed anti-slip and anti-wear design, dual protection for the environment and the cable is achieved, ultimately achieving the goals of stable and non-detachment, dynamic energy adaptation, and long-term durability.

[0061] The above description is merely a specific embodiment of the present invention, and the various examples do not constitute a limitation on the substantive content of the present invention.

Claims

1. An anti-falling high-altitude cable clamping installation structure comprising a bottom clamp (1) and a top clamp (2), characterized in that: The top clamp (2) is arranged above the bottom clamp (1); the top clamp (2) and the bottom clamp (1) are provided with a tension spring (2-1) therebetween, so that the top clamp (2) is clamped downward under the action of the tension spring (2-1); the opposite surfaces of the bottom clamp (1) and the top clamp (2) are provided with arc-shaped clamping grooves, and the opposite surfaces of the bottom clamp (1) and the top clamp (2) are provided with mounting planes at the left and right ends. The bottom clamp (1) comprises an upper supporting clamp (1-2) and a lower fixing base (1-3), the supporting clamp (1-2) is sleeved on the upper part of the fixing base (1-3), and the supporting clamp (1-2) can move up and down on the fixing base (1-3) within a limited range; a limiting sliding groove (1-4) is symmetrically arranged on the mounting plane of the bottom clamp (1), and a downwardly extending butt joint base (2-2) is arranged on the mounting plane of the top clamp (2). An energy-absorbing pad (1-6) and a lifting spring (1-7) are arranged in the inner cavity of the bottom clamp (1), the top of the lifting spring (1-7) is provided with an upwardly extending top rod (1-8), and the lifting spring (1-7) and the top rod (1-8) are used for reversely lifting the cable.

2. The anti-drop aerial cable clamp mounting structure according to claim 1, characterized in that: The left and right sides of the bottom clamp (1) are symmetrically provided with outwardly extending bolt plates (1-1), the bolt plates (1-1) are fixed at the cable mounting positions of the power transmission tower or power transmission equipment and are locked and fixed by bolts. The top and bottom of the fixing base (1-3) are provided with limiting blocks, and the inner cavity of the supporting clamp (1-2) is provided with a limiting groove for blocking the limiting blocks, so as to prevent the supporting clamp (1-2) from being disconnected from the fixing base (1-3); the supporting clamp (1-2) is sleeved on the outside of the fixing base (1-3), and rainwater naturally flows downward along the supporting clamp (1-2).

3. The anti-drop aerial cable clamp mounting structure according to claim 2, characterized in that: The bottom of the butt joint base (2-2) is provided with a downwardly extending T-shaped sliding rod, the T-shaped sliding rod is slidingly inserted into the limiting sliding groove (1-4), the limiting sliding groove (1-4) also has a T-shaped structure, the length of the limiting sliding groove (1-4) is four-fifths of the length of the mounting plane, and the T-shaped sliding rod is quickly installed through the limited length, so as to prevent the T-shaped sliding rod from being disconnected.

4. The anti-drop aerial cable clamp mounting structure according to claim 3, characterized in that: The left and right sides of the bottom clamp (1) are symmetrically provided with a plurality of locking bolts (1-5), the locking bolts (1-5) internally fix the T-shaped sliding rod and the bottom clamp (1) to each other, and the locking bolts (1-5) are dovetail bolts.

5. The anti-drop aerial cable clamp mounting structure according to claim 1, characterized in that: The inner cavities of the left and right sides of the top clamp (2) are provided with tension springs (2-1), and the bottoms of the tension springs (2-1) are fixed on the butt joint base (2-2); a plurality of groups of tension springs (2-1) are arranged on the left and right sides to form a spring group.

6. The anti-drop aerial cable clamp mounting structure according to claim 1, wherein: The energy-absorbing pad (1-6) is arranged in the inner cavity of the supporting clamp (1-2), and the shape of the energy-absorbing pad (1-6) matches the shape of the inner cavity of the supporting clamp (1-2); the energy-absorbing pad (1-6) is a flexible rubber block, and the bottom of the energy-absorbing pad (1-6) is located on the top surface of the fixing base (1-3).

7. The anti-drop aerial cable clamp mounting structure according to claim 6, characterized in that: The top surface of the fixing base (1-3) is transversely provided with a plurality of groups of lifting springs (1-7), the top end of the top rod (1-8) extends into the clamping groove and is in contact with the surface of the cable; the energy-absorbing pad (1-6) is provided with a containing groove near the position of the lifting spring (1-7) for limiting the lifting spring (1-7).

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