Cable fixing structure

Abstract

The utility model discloses a cable fixing structure, which comprises an upper clamping strip used for surrounding a cable, a lower clamping strip used for surrounding an insulator and fixing the upper clamping strip on the insulator, and a supporting part capable of outwards supporting the upper clamping strip in the radial direction of the insulator, and the upper clamping strip is made of an insulating material. According to the cable fixing structure provided by the utility model, the supporting part is matched with the upper clamping strip and the lower clamping strip, so that the matching degree of the whole cable fixing structure and the insulator is higher, and the overall stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of cable or wire installation technology, and specifically to a cable fixing structure. Background Technology

[0002] During the construction of high-voltage cables, when fixing the cables with insulators, metal winding or metal clamps are commonly used. Using metal winding requires experienced personnel, increasing the difficulty of construction, and this method has poor wind resistance. Clamping the cable with metal clamps, due to the electric field, can easily create a loop at the clamping point, causing the cable to overheat and reducing its lifespan.

[0003] To address the aforementioned issues, rubber cable clamps have been put into use. However, due to the flexibility of rubber, improving the stability of the clamps for securing cables is a problem that needs to be solved. Utility Model Content

[0004] This utility model addresses the above-mentioned problems by researching and designing a cable fixing structure. The technical means adopted by this utility model are as follows:

[0005] A cable fixing structure includes an upper clamp for surrounding a cable and a lower clamp for surrounding an insulator and fixing the upper clamp to the insulator, and also includes a support portion that can provide outward support to the upper clamp in the radial direction of the insulator, wherein the upper clamp is made of insulating material.

[0006] Furthermore, it includes two upper clamping strips and two lower clamping strips, which are spaced apart and are directly or indirectly fixedly connected end to end in sequence.

[0007] Furthermore, the support is provided at the connection between the upper clamping bar and the lower clamping bar, and the connection between the upper clamping bar and the lower clamping bar is also provided with a fixing part for fixing the cable fixing structure.

[0008] Furthermore, the fixing part is a fixing hole for fixing with bolts, the upper clamping bar is an inverted U-shaped structure, the upper clamping bar or the connection between the upper clamping bar and the lower clamping bar is provided with a fixing block that can stabilize the cable in a fixed state, and the inner or outer side of the support part is an arc shape that can contact the insulator or the lower clamping bar.

[0009] Furthermore, the support portion and the upper clamping strip are interconnected to form an upper clamping strip assembly, the upper clamping strip assembly is fixed to the inner side of the lower clamping strip, and the support portion can contact the insulator.

[0010] Furthermore, the support portion and the upper clamping strip are interconnected to form an upper clamping strip assembly, which is fixed to the outside of the lower clamping strip.

[0011] Furthermore, the upper and lower clamping strips are fixed together to form a fixed structure body, and the support part is located on the inner or outer side of the fixed structure body.

[0012] Furthermore, the fixing block is a conical or pyramidal block, and the tip of the fixing block points towards the center side of the structure enclosed by the lower clamping strip.

[0013] Furthermore, the main body material of the upper and lower clamping strips is rubber, and the upper and / or lower clamping strips are provided with a reinforcing layer.

[0014] Furthermore, the upper clamping strip has a first reinforcing layer, and the lower clamping strip has a second reinforcing layer. The first reinforcing layer is made of nylon, and the thickness of the middle part of the first reinforcing layer is less than the thickness of its two ends. The second reinforcing layer is made of metal.

[0015] Compared with the prior art, the cable fixing structure of this utility model, by setting a support part to cooperate with the upper and lower clamping bars, makes the entire cable fixing structure and the insulator more compatible and improves the overall stability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of this utility model.

[0017] Figure 2 This is a front view schematic diagram of Embodiment 1 of this utility model.

[0018] Figure 3 yes Figure 2 The left view.

[0019] Figure 4 yes Figure 2 Top view.

[0020] Figure 5 yes Figure 2 A bottom view.

[0021] Figure 6 This is a three-dimensional structural diagram of the upper clamping strip assembly described in Embodiment 1 of this utility model.

[0022] Figure 7 This is a front view schematic diagram of the upper clamping strip assembly described in Embodiment 1 of this utility model.

[0023] Figure 8 yes Figure 7 The right view.

[0024] Figure 9 yes Figure 8 Top view.

[0025] Figure 10 yes Figure 8 A bottom view.

[0026] Figure 11 This is a schematic diagram of the structure of the lower clamping strip as described in Embodiment 1 of this utility model.

[0027] Figure 12 This is a schematic diagram of the implementation state of Embodiment 1 of this utility model.

[0028] Figure 13 This is a three-dimensional structural diagram of Embodiment 2 of this utility model.

[0029] Figure 14 This is a front view schematic diagram of Embodiment 3 of this utility model.

[0030] Figure 15 yes Figure 14 The left view.

[0031] Figure 16 yes Figure 14 Top view.

[0032] Figure 17 yes Figure 14 A bottom view.

[0033] Figure 18 This is a schematic diagram of the implementation state of Embodiment 3 of this utility model.

[0034] Figure 19 This is a three-dimensional structural diagram of Embodiment 4 of this utility model.

[0035] Figure 20 This is a schematic diagram of the support portion described in Embodiment 4 of this utility model.

[0036] Figure 21 This is a cross-sectional schematic diagram of the upper clamping strip described in Embodiment 5 of this utility model.

[0037] Figure 22 This is a schematic diagram of the lower clamping strip as described in Embodiment 5 of this utility model.

[0038] Figure 23 yes Figure 22 AA cross-section view. Detailed Implementation

[0039] Example 1

[0040] like Figures 1 to 11 As shown, a cable fixing structure includes an upper clamping bar 1 for wrapping around a cable and a lower clamping bar 2 for wrapping around an insulator 5 and fixing the upper clamping bar 1 to the insulator. It also includes a support part 3 that can provide outward support for the upper clamping bar 1 in the radial direction of the insulator. The upper clamping bar 1 is made of insulating material, preferably rubber.

[0041] As a preferred embodiment, this embodiment includes two upper clamping strips 1 and two lower clamping strips 2, which are spaced apart and directly or indirectly fixedly connected end to end. The support part 3 is provided at the connection between the upper clamping strips 1 and the lower clamping strips 2, and the connection between the upper clamping strips 1 and the lower clamping strips 2 is also provided with a fixing part 4 for fixing the cable fixing structure. In this embodiment, the fixing part 4 is a fixing hole for fixing with bolts. The upper clamping strip 1 has an inverted U-shaped structure, and a fixing block 6 is provided on the upper clamping strip or at the connection between the upper and lower clamping strips to stabilize the cable in a fixed state.

[0042] In this embodiment, the support part 3 and the upper clamping strip 1 are interconnected to form an upper clamping strip assembly. The upper clamping strip assembly in this embodiment is a single piece, and it is fixed to the inner side of the lower clamping strip 2. The support part 3 can contact the insulator 5. As a preferred embodiment, the inner side of the support part 3 is a curved surface that mates with the neck of the insulator 5, and the outer side of the support structure is a curved surface that is bonded to the lower clamping strip 2, so that the support part 3 as a whole has a curved wedge-shaped structure.

[0043] The fixing block 6 is preferably a conical or pyramidal block, with its tip pointing towards the center of the structure formed by the lower clamping strip 2. In the fixed state, the tip of the fixing block 6 can enter the gap between the cable and the insulator support structure to fix the cable and prevent it from moving within the support groove of the insulator support structure. In this embodiment, the fixing block 6 is a pyramidal structure, positioned on the upper clamping strip, and its position corresponds to the position of the cable receiving groove on the insulator.

[0044] like Figure 12 As shown, in this embodiment, in the fixed state, the bolt passes through the fixing hole through the upper clamping strip 1 and the lower clamping strip 2 to fix the cable 7 fixing structure. The two lower clamping strips 2 form an approximately elliptical or spindle-shaped structure. The internal space formed by the lower clamping strip 2 and the inner support part 3 is approximately circular or a circle that matches the neck of the insulator, so that the lower clamping strip 2 and the support part 3 are in close contact with the neck of the insulator. The two inverted U-shaped upper clamping strips limit and fix the cable 7 in the fixing groove of the insulator. The fixing block 6 is inserted into the gap between the cable 7 and the fixing groove at the corresponding position, providing effective support for the cable 7 and preventing the cable 7 from shaking.

[0045] Existing cable insulation clamps suffer from insufficient fit with the insulator. Specifically, due to the small-diameter neck between the insulator's support structure and body, the support structure resembles a flange. Consequently, if the lower clamping bar of the existing clamp tightens around the insulator's neck, the upper clamping bar, obstructed by the protruding side support structure, will tilt and deform, failing to tightly wrap around and secure the cable. Conversely, if the upper clamping bar is to remain relatively vertical, the lower clamping bar cannot clamp the neck, resulting in a large gap and low stability. This application effectively solves this problem by incorporating a support portion. This support portion allows the upper clamping bar to remain stably supported even as its position shifts radially outward, while the lower clamping bar directly or indirectly fits tightly against the neck, improving the fit between the cable fixing structure and the insulator and significantly enhancing stability.

[0046] Example 2

[0047] like Figure 13 As shown, the difference between this embodiment and Embodiment 1 is that this embodiment does not have a fixed block. The other structures and beneficial effects of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

[0048] Example 3

[0049] like Figure 14 Only Figure 18 As shown, in this embodiment, the upper clamping strip 1 and the support portion 3 are also an integral upper clamping strip assembly. The support portion 3 in this embodiment also has a curved wedge-shaped structure. The difference between this embodiment and Embodiment 1 is that the upper clamping strip assembly is fixed to the outside of the lower clamping strip 2, the inner side of the support portion is a curved surface that adheres and bonds to the lower clamping strip, and the inner side of the lower clamping strip 2 is a curved surface that can fully abut against the neck of the insulator. Other structures and beneficial effects of this embodiment are the same as in Embodiment 1, and will not be repeated here.

[0050] Example 4

[0051] like Figure 19 and Figure 20As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, the upper clamping strip 1 and the lower clamping strip 2 are fixed together to form the main body of the fixing structure. The upper clamping strip 1 and the lower clamping strip 2 can be made into a single structure, or bolts can pass through the upper clamping strip 1 and the lower clamping strip 2 for fixing, or they can be fixed by adhesive bonding. The support part 3 is located on the inner or outer side of the main body of the fixing structure. This embodiment uses the example of it being located on the inner side of the main body of the fixing structure for explanation. The support part 3 has a fixing end 31, and bolts pass through the main body of the fixing structure and the fixing end 31 of the support part 3 for fixing. The support part 3 is bonded to the inner side of the main body of the fixing structure. The support part 3 has a curved wedge-shaped structure, and the structure formed by the inner side of the support part 3 and the lower clamping strip 2 can fully abut against the neck of the insulator 5. Other structures and beneficial effects of this embodiment are the same as in Embodiment 1, and will not be repeated here.

[0052] Example 5

[0053] like Figures 21 to 23 As shown, the difference between this embodiment and Embodiment 1 is that the main body material of the upper clamping strip 1 and the lower clamping strip 2 is rubber, and a reinforcing layer is provided inside the upper clamping strip 1 and / or the lower clamping strip 2. The upper clamping strip 1 has a first reinforcing layer 11, and the lower clamping strip 2 has a second reinforcing layer 21. The first reinforcing layer 11 is made of plastic, preferably nylon. The thickness of the middle part of the first reinforcing layer 11 is less than the thickness of its two ends; the middle part is the bent portion of the inverted U-shaped structure. This portion has a smaller thickness, which is beneficial for bending during the fastening process. The two ends have a larger thickness, providing greater strength. The second reinforcing layer 21 is made of metal. The first reinforcing layer 11, made of nylon, has a greater hardness than rubber, making the structure of the upper clamping strip 1 more stable. The second reinforcing layer, being made of metal, has even higher hardness and strength, further enhancing the stability of the cable fixing structure. Other structures and beneficial effects of this embodiment are the same as in Embodiment 1, and will not be repeated here.

[0054] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A cable fixing structure, comprising an upper clamping bar for wrapping around a cable and a lower clamping bar for wrapping around an insulator and fixing the upper clamping bar to the insulator, characterized in that: It also includes a support portion that can provide outward support for the upper clamping bar in the radial direction of the insulator, the upper clamping bar being made of insulating material.

2. The cable fixing structure according to claim 1, characterized in that: It includes two upper clamping strips and two lower clamping strips, which are spaced apart and are directly or indirectly fixedly connected end to end in sequence.

3. The cable fixing structure according to claim 2, characterized in that: The support is provided at the connection between the upper and lower clamping bars, and the connection between the upper and lower clamping bars is also provided with a fixing part for fixing the cable fixing structure.

4. The cable fixing structure according to claim 3, characterized in that: The fixing part is a fixing hole for fixing with bolts. The upper clamping bar has an inverted U-shaped structure. The upper clamping bar or the connection between the upper clamping bar and the lower clamping bar is provided with a fixing block that can stabilize the cable in a fixed state. The support part is located on the inner or outer side of the lower clamping bar. The inner or outer side of the support part is an arc shape that can contact the insulator or the lower clamping bar.

5. The cable fixing structure according to claim 4, characterized in that: The support part and the upper clamping bar are connected to each other to form an upper clamping bar assembly. The upper clamping bar assembly is fixed to the inner side of the lower clamping bar, and the support part can contact the insulator.

6. The cable fixing structure according to claim 4, characterized in that: The support part and the upper clamping strip are connected to each other to form an upper clamping strip assembly, which is fixed to the outside of the lower clamping strip.

7. The cable fixing structure according to claim 4, characterized in that: The upper and lower clamping strips are fixed together to form the main body of the fixed structure, and the support part is located on the inner or outer side of the main body of the fixed structure.

8. The cable fixing structure according to claim 4, characterized in that: The fixing block is a conical or pyramidal block, with the tip of the fixing block pointing towards the center side of the structure enclosed by the lower clamping strip.

9. The cable fixing structure according to any one of claims 1 to 8, characterized in that: The upper and lower clamping strips are both made of rubber, and a reinforcing layer is provided inside the upper and / or lower clamping strips.

10. The cable fixing structure according to claim 9, characterized in that: The upper clamping strip has a first reinforcing layer, and the lower clamping strip has a second reinforcing layer. The first reinforcing layer is made of nylon, and the thickness of the middle part of the first reinforcing layer is less than the thickness of its two ends. The second reinforcing layer is made of metal.

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