Cable safety protection device

Abstract

The utility model discloses a cable safety protection device, which comprises an inner-layer pre-twisted wire spirally wound on the rear end of a cable, and the inner-layer pre-twisted wire is provided with a front pre-twisted safety backup wire clamp and a rear pre-twisted strain wire clamp. The pre-twisted strain clamp comprises an outer-layer pre-twisted wire I which is spirally wound on the rear part of the inner-layer pre-twisted wire, a twisting ring at the rear end of the outer-layer pre-twisted wire I is connected with a traction assembly I, and the traction assembly I horizontally tensions the cable through the inner-layer pre-twisted wire and the outer-layer pre-twisted wire; the pre-twisted type safety backup wire clamp comprises an outer pre-twisted wire II which is spirally wound on the front portion of the inner pre-twisted wire, a twisting ring at the rear end of the outer pre-twisted wire II is connected with a traction assembly II located above the strain clamp, and the traction assembly II obliquely tensions the cable through the inner pre-twisted wire and the outer pre-twisted wire. According to the utility model, the stress is uniformly distributed on the cable, no stress concentration point exists, the safety coefficient of the system is increased, the accident probability is reduced, and the manual operation can be quickly, simply and conveniently carried out.

Description

Technical Field

[0001] The utility model relates to electric power hardware, in particular to a cable safety protection device. Background Art

[0002] In order to further improve the safety level of overhead transmission lines crossing high-speed railways, highways and important transmission channels (referred to as three spans), ensure the safety and stability of the three spans and the objects being crossed, and safeguard public safety and power grid safety, State Grid Corporation has formulated anti-accident measures, requiring that all three-span sections of transmission lines with a voltage level of 66KV and above be equipped with wire clamps with safety backup. Utility Model Content

[0003] In order to meet the requirements of the anti-accident measures formulated by the State Grid Corporation, the utility model proposes a cable safety protection device for increasing the safety factor of the power system.

[0004] The cable safety protection device capable of solving the above technical problems includes:

[0005] 1. An inner pre-twisted wire is spirally wound on the rear end of the cable, and the inner pre-twisted wire is provided with front and rear pre-twisted safety backup wire clamps and pre-twisted tension wire clamps.

[0006] 2. The pre-twisted tension clamp includes an outer pre-twisted wire I spirally wound on the rear of the inner pre-twisted wire, and the twist ring at the rear end of the outer pre-twisted wire I is connected to a pulling component I, and the pulling component I tightens the cable horizontally through the inner and outer pre-twisted wires.

[0007] 3. The pre-twisted safety backup wire clamp includes an outer pre-twisted wire II spirally wound on the front part of the inner pre-twisted wire, and the twist ring at the rear end of the outer pre-twisted wire II is connected to a pulling component II located above the tension wire clamp, and the pulling component II obliquely tightens the cable through the inner and outer pre-twisted wires.

[0008] Furthermore, the pulling component I is a component composed of a hanging plate and a plurality of hanging rings.

[0009] Furthermore, the pulling assembly II is an assembly consisting of a NUT special wire clamp, a plurality of hanging rings and a plurality of extension rods.

[0010] Conventionally, the cables are tensioned on an adjustment plate connected to the tower base or tower pole.

[0011] Beneficial effects of the utility model:

[0012] The utility model discloses a cable safety protection device which evenly distributes stress to a longer section of cable without stress concentration points, thus helping to reduce fatigue damage caused by breeze vibration, increasing the safety factor of the overall system, being strong and durable, and reducing the probability of accidents. The device is simple to operate and can be quickly and easily operated manually without any special tools or special training, and can be inspected by the naked eye. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an implementation method of the utility model.

[0014] Figure number identification: 1. Cable; 2. Inner pre-twisted wire; 3. Outer pre-twisted wire I; 4. Hanging ring; 5. Hanging plate; 6. Extension rod; 7. Outer pre-twisted wire II; 8. Adjustment plate; 9. NUT special wire clamp. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described below in conjunction with the implementation modes shown in the accompanying drawings.

[0016] The utility model cable safety protection device comprises an inner pre-twisted wire 2 spirally wound on the pulling rear end of the cable 1, a pre-twisted tension clamp is arranged on the rear part of the inner pre-twisted wire 2, and a pre-twisted safety backup clamp is arranged on the front part of the inner pre-twisted wire 2. Figure 1 shown.

[0017] The pre-twisted tension clamp includes an outer pre-twisted wire Ⅰ3 spirally wound on an inner pre-twisted wire 2, the outer pre-twisted wire Ⅰ3 is formed by winding a plurality of "U"-shaped pre-twisted wires and a twist ring is formed at its rear end for threading, the twist ring of the outer pre-twisted wire Ⅰ3 is connected with a pulling component Ⅰ, and the pulling component Ⅰ horizontally tightens the cable 1 on the front lower end of the adjustment plate 8 through the outer pre-twisted wire Ⅰ3 and the inner pre-twisted wire 2; the pulling component Ⅰ includes a hanging plate 5 and a plurality of hanging rings 4, a hanging ring 4 connects the twist ring of the outer pre-twisted wire Ⅰ3 and the front end of the hanging plate 5, and two hanging rings 4 connected in series connect the adjustment plate 8 and the rear end of the hanging plate 5, such as Figure 1 shown.

[0018] The pre-twisted safety backup wire clamp includes an outer pre-twisted wire II7 spirally wound on an inner pre-twisted wire 2, the outer pre-twisted wire II7 is formed by winding a plurality of "U"-shaped pre-twisted wires and a twist ring is formed at its rear end for threading, the twist ring of the outer pre-twisted wire II7 is connected to a pulling component II located above the pre-twisted tension wire clamp, the pulling component II uses the outer pre-twisted wire II7 and the inner pre-twisted wire 2 to obliquely tighten the cable 1 backward and upward on the front upper end of the adjustment plate 8; the pulling component II includes a NUT special wire clamp 9, a plurality of extension rods 6 and two hanging rings 4, the two ends of the NUT special wire clamp 9 are respectively connected to the twist ring of the outer pre-twisted wire II7 and a hanging ring 4, the other hanging ring 4 is connected to the adjustment plate 8, and a plurality of series-connected extension rods 6 are connected between the two hanging rings 4, such as Figure 1 shown.

[0019] The rear end of the adjustment plate 8 is connected to the tower base or the tower pole through a pulling assembly III, and the pulling assembly III is composed of more than two hanging rings 4 connected in series.

Claims

1. Cable safety protection device, characterized by: It comprises an inner layer pre-twisted wire (2) spirally wound on the rear end of the cable (1), wherein the inner layer pre-twisted wire (2) is provided with front and rear pre-twisted safety backup wire clamps and pre-twisted tension wire clamps; The pre-twisted tension clamp comprises an outer pre-twisted wire I (3) spirally wound on the rear of an inner pre-twisted wire (2), a twisting ring at the rear end of the outer pre-twisted wire I (3) being connected to a pulling assembly I, and the pulling assembly I horizontally tightens the cable (1) through the inner and outer pre-twisted wires; The pre-twisted safety backup wire clamp comprises an outer pre-twisted wire II (7) spirally wound on the front of an inner pre-twisted wire (2), a twist ring at the rear end of the outer pre-twisted wire II (7) being connected to a pulling assembly II located above the tension clamp, and the pulling assembly II obliquely tightens the cable (1) through the inner and outer pre-twisted wires.

2. The cable safety protection device according to claim 1, characterized in that: The pulling component I is a component composed of a hanging plate (5) and a plurality of hanging rings (4).

3. The cable safety protection device according to claim 1, characterized in that: The pulling assembly II is an assembly consisting of a NUT dedicated wire clamp (9), a plurality of hanging rings (4) and a plurality of extension rods (6).

4. The cable safety protection device according to any one of claims 1 to 3, characterized in that: The cable (1) is tensioned on an adjustment plate (8) connected to a tower base or a tower pole.

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