A threading type cable fixing device

Abstract

The present invention discloses a threading type cable fixing device, comprising a support tube (1); an insulating tube (2) is provided in the support tube (1); a clip (5) is provided in the insulating tube (2); the clip (5) is rotatably connected to a clamping bolt (4) passing through the support tube (1) and the insulating tube (2); and the support tube (1) is fixedly connected to a tower (7) via a U-shaped clip (6). The present invention has a simple structure. Through the U-shaped clip structure, the threading type cable fixing device is directly fixed on the power tower in a load-bearing manner, replacing the traditional hanging insulator fixing method. The brittle fracture of the traditional insulator caused by electrical faults, mechanical faults, product defects, wind deviation, bird damage, poor grounding, wildfires, external force damage, improper construction, etc. is eliminated, and the occurrence of ice-covered line breaking, insulator string breaking and falling to the ground is avoided. The occurrence of support insulator fracture is avoided, thereby improving the transmission network's ability to cope with severe weather and reducing losses caused by power outages.

Description

Technical Field

[0001] The invention relates to a threading type cable fixing device, belonging to the technical field of electrical machinery and equipment manufacturing. Background Art

[0002] Porcelain, glass, and composite insulators are widely used in power transmission and transformation projects. After long-term service in various grid environments, these insulators will experience varying degrees of failure, leading to accidents. Furthermore, during strong earthquakes and strong winds, the violent movement of conductors and insulators can easily damage insulators. Furthermore, during long-term service, various insulators inevitably experience various forms of vibration and impact loads generated by nature and the conductors, leading to fatigue failure. Sample tests of insulators in operation showed that 16.7% of the insulators had mechanical tensile failure loads below the rated value. The failure occurred in the cap and leg, indicating problems with the long-term mechanical properties of internally bonded, externally bonded, internally bonded, and bonded insulators. Therefore, existing technologies still have shortcomings and require further improvement. Summary of the Invention

[0003] The object of the present invention is to provide a threading type cable fixing device which adopts a load-bearing structure to avoid insulator string breakage and self-explosion, thereby improving the quality of the insulators, ensuring the safe and reliable operation of the transmission power grid, and avoiding accidents such as breakage and flashover, thereby overcoming the shortcomings of the existing technology.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The invention provides a threading type cable fixing device, comprising a support tube; an insulating tube is provided in the support tube, and a clamp is provided in the insulating tube; the clamp is rotatably connected to a clamping bolt passing through the support tube and the insulating tube; and the support tube is fixedly connected to a tower via a U-shaped clamp.

[0006] In the aforementioned threading type cable fixing device, the support tube is a porcelain tube or a metal tube.

[0007] In the aforementioned threading type cable fixing device, the two ends of the insulating tube are bell-shaped; and a sealing ring is provided at the connection between the flange of the bell-shaped tube and the insulating tube.

[0008] In the aforementioned threading type cable fixing device, the clip is tile-shaped and made of insulating material, and a connection hole connected to the clamping bolt is provided on the back of the clip; the connection hole is slidably connected to the clamping bolt.

[0009] Due to the adoption of the above technical solution, compared with the prior art, the present invention has a simple structure. Through the U-shaped card structure, the threading type cable fixing device is directly fixed on the power tower in a load-bearing manner, replacing the traditional hanging insulator fixing method, eliminating the brittle fracture of traditional insulators caused by electrical failure, mechanical failure, product defects, wind deviation, bird damage, poor grounding, wildfire, external force damage, improper construction, etc., avoiding ice covering and breaking of lines, breaking of insulator strings and falling to the ground; and preventing the occurrence of post insulator fractures, thereby improving the transmission network's ability to cope with severe weather and reducing losses caused by power outages. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention.

[0011] The markings in the figure are as follows: 1-support tube, 2-insulating tube, 3-bell mouth, 4-tightening bolt, 5-clamp, 6-U-type card, 7-tower, 8-sealing ring, 9-connecting hole, 10-cable, 11-shock pad. DETAILED DESCRIPTION

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0013] A threading type cable fixing device of the present invention, such as Figure 1 As shown, the device includes a support tube 1; an insulating tube 2 is installed within the support tube 1, and a clip 5 is installed within the insulating tube 2. The clip 5 is rotatably connected to a compression bolt 4 that passes through the support tube 1 and the insulating tube 2. The support tube 1 is fixedly connected to a tower 7 via a U-shaped clamp 6. The support tube 1 is made of porcelain or metal. The insulating tube 2 has bell-shaped ends 3 at both ends. The flanges of the bell-shaped ends 3 connect to the insulating tube 2 with sealing rings 8. The clip 5 is tile-shaped and made of insulating material. The back of the clip 5 is provided with a connection hole 9 that connects to the compression bolt 4. The connection hole 9 is in sliding connection with the compression bolt 4. Example

[0014] The present invention is a threading type cable fixing device, when it is specifically implemented, as Figure 1As shown, it includes components such as a support tube 1, an insulating tube 2, a clamp 5, a tightening bolt 4, and a U-shaped clip 6. The support tube 1 is the support body of the entire device and is required to be made of a material with high strength and good corrosion resistance. For example, it can be made of a porcelain material with good crack resistance, or stainless steel with good strength and corrosion resistance. An insulating tube 2 is provided inside the support tube 1, which can be pressed into the support tube 1 by molding or inlaying. The insulating tube 2 is provided with a bell mouth 3 with an arc flange, which, on the one hand, avoids scratching the cable 10, and on the other hand, wraps the support tube 1 through the arc flange of the bell mouth 3 of the insulating tube 2 to prevent the cable 10 from contacting the support tube 1. In order to prevent rainwater from entering the gap between the support tube 1 and the insulating tube 2, a sealing ring 8 is provided at the arc flange of the bell mouth 3 of the insulating tube 2. During installation, the cable 10 enters from the bell mouth 3 at one end of the insulating tube 2 and exits from the bell mouth 3 at the other end of the insulating tube 2. To accommodate varying cable 10 diameters, a clip 5 is provided within the insulating tube 2. This clip 5 is a tile-like structure made of insulating material, and its inner arc surface is provided with an anti-slip groove to prevent the cable from sliding after being compressed. A connection hole 9 is provided on the back of the clip 5. This connection hole 9 is slidably connected to a clamping bolt 4 that penetrates the insulating tube 2 within the support tube 1. This ensures that the clip 5 does not rotate with the clamping bolt 4 when the clamping bolt 4 rotates, limiting the clip 5 to radial movement up and down. The support tube 1 is connected to the tower 7 using a pair of U-shaped clips 6. A shock-absorbing pad 11 is placed between the support tube 1 and the tower 7 to mitigate vibrations of the device of the present invention.

[0015] The present invention has a simple structure. Through a U-shaped clip structure, the threading cable fixing device is directly fixed on the power tower in a load-bearing manner, replacing the traditional hanging insulator fixing method. It eliminates the brittle fracture of traditional insulators caused by electrical failure, mechanical failure, product defects, wind deviation, bird damage, poor grounding, wildfire, external force damage, improper construction, etc., avoids ice covering and breaking of lines, broken insulator strings and falling to the ground, and prevents the occurrence of support insulator fracture, thereby improving the transmission network's ability to cope with severe weather and reducing losses caused by power outages.

Claims

1. A threading type cable fixing device, comprising a support tube (1); characterized in that: An insulating tube (2) is provided in the supporting tube (1), and a clip (5) is provided in the insulating tube (2); the clip (5) is rotatably connected to a clamping bolt (4) passing through the supporting tube (1) and the insulating tube (2); the supporting tube (1) is fixedly connected to the tower (7) via a U-shaped clamp (6); the two ends of the insulating tube (2) are bell mouths (3); a sealing ring (8) is provided at the connection between the flange of the bell mouth (3) and the insulating tube (2); the clip (5) is tile-shaped and made of insulating material, and a connecting hole (9) connected to the clamping bolt (4) is provided on the back of the clip (5); the connecting hole (9) is slidably connected to the clamping bolt (4).

2. The threading type cable fixing device according to claim 1, characterized in that: The support tube (1) is a porcelain tube or a metal tube.

Images