A cable accessory clamp

Abstract

This utility model discloses a cable clamp accessory, including a clamp body, a sliding plate, and a warning component. The clamp body has a wiring groove, and the warning component is integrally disposed within a blind hole on the side wall of the wiring groove. It consists of a temperature-sensitive metal strip, a pop-out spring, a support rod, and a warning balloon. The inner side wall of the blind hole has a strip-shaped groove. One end of the temperature-sensitive metal strip is fixed to the bottom wall of the strip-shaped groove, and the other end abuts against the step at the end of the support rod at room temperature. The pop-out spring connects the bottom wall of the blind hole to the top wall of the support rod. The support rod is slidably disposed within the blind hole and has a mounting groove at its bottom. The warning balloon is coated with a fluorescent layer and connected to the support rod via a flexible rope, and is compressed and stored within the mounting groove. When the clamp temperature reaches the deformation threshold of the temperature-sensitive metal strip, the temperature-sensitive metal strip bends and detaches from the support rod step. The pop-out spring drives the support rod and the warning balloon to pop out, and the warning balloon unfolds to form a visual warning signal. This clamp can automatically warn of abnormal temperatures without the need for electronic equipment, has high reliability, and the warning signal is visible day and night, improving the timeliness of fault detection and line safety.

Description

Technical Field

[0001] This utility model relates to the field of cable clamp technology, specifically to a cable accessory cable clamp. Background Technology

[0002] In fields such as power transmission and communication lines, wire clamps are key components connecting conductors, and their working condition directly affects the safe and stable operation of the line. During long-term use, wire clamps are prone to abnormal temperature rises due to factors such as changes in current load, poor contact, and environmental corrosion. If not detected and addressed in time, this may lead to overheating damage to the wire clamp, conductor melting, or even serious safety accidents such as short circuits and fires.

[0003] Currently, most cable clips on the market only have wire connection functions and lack effective real-time warning mechanisms. Although some cable clips with monitoring functions can detect temperature through sensors, they rely on complex electronic devices and communication systems to achieve data transmission and early warning. This is not only costly, but also poses a risk of warning failure in complex environments such as the field and high altitudes, where electronic components are easily interfered with and damaged.

[0004] Furthermore, even if some wire clamps are equipped with mechanical warning structures, the visibility of their warning signals is limited. For example, some warning structures can only be observed in bright daylight and are difficult to identify at night or in low-light environments; others have inconspicuous shapes after popping up, making them difficult for inspection personnel to quickly spot, resulting in untimely troubleshooting.

[0005] Therefore, there is an urgent need for a wire clamp temperature abnormality warning device that is simple in structure, low in cost, does not rely on electronic devices, and has high visibility in different environments day and night, in order to solve the problems of untimely warning, low reliability and poor visibility in the existing technology, and improve the safety of line operation and maintenance efficiency. Utility Model Content

[0006] To address the shortcomings of the prior art, this utility model provides a cable accessory clamp.

[0007] The technical solution adopted by this utility model is: a cable accessory clamp, including a clamp body and a sliding plate. The clamp body is provided with a wiring groove and also includes a warning component. The warning component is integrally set in a blind hole in the side wall of the wiring groove and includes a temperature-sensitive metal strip, a pop-out spring, a support rod and a warning balloon.

[0008] A strip groove is provided on the inner side wall of the blind hole. One end of the temperature-sensitive metal strip is fixed to the bottom wall of the strip groove, and the other end abuts against the step at the end of the support rod at room temperature.

[0009] One end of the pop-out spring is connected to the bottom wall of the blind hole, and the other end is connected to the top wall of the support rod;

[0010] The support rod is slidably disposed in the blind hole, and the bottom of the support rod is provided with an installation groove;

[0011] The warning balloon has a fluorescent coating on its surface. The warning balloon is connected to the support rod by a flexible rope and is compressed and stored in the mounting slot.

[0012] Furthermore, the deformation threshold temperature of the thermochromic metal strip is set to 70 ℃ ± 3 ℃.

[0013] Furthermore, the fluorescent layer is a weather-resistant red fluorescent coating with a brightness factor β ≥ 0.6 and a visibility distance ≥ 30 m under sunlight.

[0014] Furthermore, the warning balloon is made of fluorinated ethylene propylene copolymer, has a wall thickness of 50 µm–70 µm, and is pre-filled with dry nitrogen.

[0015] Furthermore, the opening of the blind hole is equipped with a transparent UV-protective cover, which can be pushed open by the support rod when the warning balloon is launched.

[0016] Furthermore, an anti-detachment step is provided on the inner wall of the blind hole on one side of the hole opening.

[0017] The beneficial effects of this utility model are:

[0018] 1. Automatic warning: Through the cooperation of temperature-sensitive metal strip and pop-out spring, without relying on electronic sensors or external control systems, when the wire clamp temperature reaches the set threshold, the warning component can be automatically triggered to pop out, providing timely feedback on the overheating status of the wire clamp. This solves the problem of traditional wire clamps lacking active warning functions or relying on electronic devices, resulting in insufficient reliability.

[0019] 2. High visibility: The surface of the warning balloon is coated with a fluorescent layer, which can quickly attract the attention of inspection personnel during the day by its shape. At night or in low light conditions, the fluorescent layer can emit a clear luminous signal, ensuring that the warning information can be clearly identified under different lighting conditions day and night, effectively improving the timeliness of fault detection.

[0020] 3. Simple structure and high reliability: The overall structure adopts a pure mechanical design, which avoids the disadvantages of electronic components being easily interfered with and damaged in complex environments, and reduces the risk of warning failure due to equipment failure; at the same time, each component realizes its function through mechanical cooperation, which is convenient to assemble and has low maintenance costs, and is suitable for a variety of harsh working environments such as the field and high altitude.

[0021] 4. Continuity of the warning status: Once the wire clamp temperature triggers the warning mechanism, the support rod and warning balloon will pop out and remain in the deployed state. They will not automatically reset due to the temperature drop, and can continuously provide warning signals to ensure that inspection personnel can accurately identify the fault point during subsequent inspections, avoiding missed or false detections.

[0022] 5. Wide range of applications: The structural design of this cable accessory clamp can be adapted to conductor connection scenarios in various fields such as power transmission and communication lines. It does not require major modifications to the existing line layout, making it easy to promote and apply, and helping to improve the safe operation level of various line systems.

[0023] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0027] Figure 3 This is a schematic diagram of the warning component of this utility model.

[0028] Figure 1-3 In the middle: 1. Cable clamp body; 2. Slide plate; 3. Wiring groove; 4. Blind hole; 5. Temperature-sensitive metal strip; 6. Pop-up spring; 7. Support rod; 8. Warning balloon; 9. Strip groove; 10. Step; 11. Mounting groove; 12. Flexible rope; 13. Transparent UV protection cover; 14. Anti-detachment step. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] This utility model provides a cable accessory clamp.

[0032] In this embodiment, refer to Figure 1-3The cable accessory clamp includes a clamp body 1 and a sliding plate 2. The clamp body is provided with a wiring groove 3 and also includes a warning component. The warning component is integrally installed in a blind hole 4 on the side wall of the wiring groove, and includes a temperature-sensitive metal strip 5, a pop-out spring 6, a support rod 7 and a warning balloon 8.

[0033] A strip groove 9 is provided on the inner side wall of the blind hole 4. One end of the temperature-sensitive metal strip is fixed to the bottom wall of the strip groove, and the other end abuts against the step 10 at the end of the support rod at room temperature.

[0034] One end of the pop-out spring is connected to the bottom wall of the blind hole, and the other end is connected to the top wall of the support rod;

[0035] The support rod is slidably disposed in the blind hole, and the bottom of the support rod is provided with an installation groove 11;

[0036] The warning balloon has a fluorescent coating on its surface. The warning balloon is connected to the support rod by a flexible rope 12 and is compressed and stored in the mounting groove.

[0037] In the above technical solution, the cable accessory clamp constructs a temperature-triggered warning mechanism by installing a warning assembly consisting of a thermochromic metal strip, a pop-out spring, a support rod, and a warning balloon inside a blind hole in the side wall of the wiring trough. At room temperature, the thermochromic metal strip abuts against the step of the support rod, restricting its movement, and the warning balloon is compressed and stored in the mounting groove of the support rod. When the clamp temperature reaches the deformation threshold of the thermochromic metal strip, it bends and detaches from the support rod step. The pop-out spring releases its elastic potential energy, driving the support rod to pop out along the blind hole, causing the compressed and stored warning balloon to untie and unfold, forming a visible warning signal using the surface fluorescent layer. This achieves automatic warning when the clamp temperature is abnormal, without relying on electronic equipment. The purely mechanical structure improves reliability in complex environments. After the warning balloon unfolds, it works in conjunction with the fluorescent layer to ensure a clearly visible warning signal day and night, significantly improving the timeliness of fault detection and reducing the risk of line safety accidents.

[0038] Specifically, the deformation threshold temperature of the thermochromic metal strip is set to 70 ℃ ± 3 ℃.

[0039] In this embodiment, the deformation threshold temperature of the temperature-sensitive metal strip is set to 70℃±3℃. This temperature value is determined based on the normal operating temperature range and safety critical temperature of the clamp. When the temperature of the clamp rises to this threshold due to poor contact or other reasons, the temperature-sensitive metal strip deforms, triggering the warning component. This avoids false alarms caused by normal temperature fluctuations and ensures timely activation of the warning when the clamp approaches a dangerous overheating state, guaranteeing the accuracy and timeliness of the warning and providing a reliable temperature monitoring node for the safe operation of the line.

[0040] Specifically, the fluorescent layer is a weather-resistant red fluorescent coating with a brightness factor β ≥ 0.6 and a visibility distance of ≥ 30 m under sunlight.

[0041] In this embodiment, the fluorescent layer on the surface of the warning balloon uses a weather-resistant red fluorescent coating with a brightness factor β ≥ 0.6 and a visibility distance ≥ 30m in sunlight. Red has a strong visual impact, the high brightness factor ensures the luminous intensity of the fluorescent layer, and the greater visibility distance expands the observation range of inspection personnel. Weather resistance ensures that the fluorescent layer maintains stable performance over a long period in complex outdoor environments; the red fluorescent coating can be clearly observed from 30m away in sunlight, significantly improving the daytime visibility and recognition of the warning signal, facilitating quick location of faulty clamps by inspection personnel.

[0042] Specifically, the warning balloon is made of fluorinated ethylene propylene copolymer, has a wall thickness of 50 µm–70 µm, and is pre-filled with dry nitrogen.

[0043] In this embodiment, the warning balloon is made of fluorinated ethylene propylene copolymer with a wall thickness controlled between 50µm and 70µm. The material possesses excellent weather resistance, corrosion resistance, and flexibility, and the thinner wall thickness facilitates rapid deployment. Pre-filling with dry nitrogen prevents moisture condensation inside the balloon from affecting the deployment effect. Simultaneously, nitrogen's stable chemical properties prevent damage to the balloon due to gas reactions. The fluorinated ethylene propylene copolymer material allows the warning balloon to be used for extended periods in harsh outdoor environments without easily aging or breaking. The suitable wall thickness and pre-filling with dry nitrogen ensure rapid and stable deployment after launch, maintaining a good warning shape and extending the effective duration of the warning signal.

[0044] Specifically, the opening of the blind hole is equipped with a transparent UV-protective cover 13, which can be pushed open by the support rod when the warning balloon is launched.

[0045] In this embodiment, the transparent UV-protective cover 13 provided at the blind hole opening can block ultraviolet rays from irradiating the components inside the blind hole (especially the fluorescent layer of the warning balloon) in the non-warning state, reducing material aging caused by ultraviolet rays; when the warning balloon pops out, the support rod pushes open the UV-protective cover, without affecting the normal pop-out action of the warning component.

[0046] Specifically, an anti-detachment step 14 is provided on the inner wall of the blind hole on one side of the hole opening.

[0047] In this embodiment, the anti-detachment step on the inner wall of one side of the blind hole can mechanically limit the support rod when it is pushed outward by the spring, preventing the support rod from completely detaching from the blind hole due to excessive springing force.

[0048] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A cable accessory clamp comprising a clamp body and a slide plate, the clamp body being provided with a wire slot, characterized in that: It also includes a warning component, which is integrally installed in a blind hole on the side wall of the wiring slot, and includes a temperature-sensitive metal strip, a pop-out spring, a support rod and a warning balloon; A strip groove is provided on the inner side wall of the blind hole. One end of the temperature-sensitive metal strip is fixed to the bottom wall of the strip groove, and the other end abuts against the step at the end of the support rod at room temperature. One end of the pop-out spring is connected to the bottom wall of the blind hole, and the other end is connected to the top wall of the support rod; The support rod is slidably disposed in the blind hole, and the bottom of the support rod is provided with an installation groove; The warning balloon has a fluorescent coating on its surface. The warning balloon is connected to the support rod by a flexible rope and is compressed and stored in the mounting slot.

2. The cable accessory clamp of claim 1, wherein: The deformation threshold temperature of the thermochromic metal strip is set to 70 ℃ ± 3 ℃.

3. The cable accessory clamp of claim 1, wherein: The fluorescent layer is a weather-resistant red fluorescent coating with a brightness factor β ≥ 0.6 and a visibility distance ≥ 30 m under sunlight.

4. Cable accessory fitting according to any of claims 1-3, characterized in that: The warning balloon is made of fluorinated ethylene propylene copolymer, has a wall thickness of 50 µm–70 µm, and is pre-filled with dry nitrogen.

5. The cable accessory clamp of any of claims 1-3, wherein: The opening of the blind hole is equipped with a transparent UV-protective cover, which can be pushed open by the support rod when the warning balloon is launched.

6. The cable accessory clamp of any one of claims 1-3, wherein: An anti-detachment step is provided on the inner wall of the blind hole on one side of the hole opening.

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