A reusable safe wire clip device

Abstract

The invention discloses a reusable safe wire-taking clamp device, wherein a square tube fixing frame is arranged in a plastic shell, and is used to support a cable bushing and a power-taking structure; the cable bushing is a circular arc surface structure, and the cable bushing is clamped to the square tube fixing frame and the open part of the plastic shell; the power-taking structure is arranged inside the plastic shell, and the power-taking structure includes a clamping screw, a bracket plate and a cable socket, the tip of the clamping screw faces the cable bushing, the tail end of the clamping screw is an operation plug interface, and an opening facing the operation plug interface is provided on the plastic shell, the clamping screw is rotated by a threaded structure and displaced relative to the cable bushing at the same time, and the bracket plate is a conductive copper plate, which is respectively connected to the clamping screw and the cable socket, and the cable socket faces the outside of the plastic shell. The invention has reliable connection, large power-taking load, simple and safe operation, and can be reused, less damage to the user cable during the power-taking operation, and easy restoration of the insulating shell.

Description

Technical Field

[0001] The invention relates to a reusable safe wire-taking clamp device used in the field of electric power engineering. Background Art

[0002] In the power industry, power cables are an indispensable medium for carrying power transmission. As the use time of power cables increases, there will be local potential dangers caused by line aging or damage, such as the risk of disconnection or spontaneous combustion, the risk of leakage, etc. It is necessary to regularly conduct necessary inspections on power cables, timely check, and timely correct or repair them. The advanced inspection of power cables is inseparable from the power supply of power cables.

[0003] There are generally two ways to detect and draw power from existing power cables. The first is the piercing wire clamp, and the second is the wire shunt. The piercing wire clamp is safer to operate, but it is a disposable lead-in device and cannot be reused. The spikes of the piercing wire clamp are made of copper, which is equivalent to the material of the wire. During use, it may bend and affect the power load. The wire shunt draws a large current, but it requires a large area of ​​insulation removal from the power cable. If it is operated under power, it is very dangerous and it is troublesome to restore the insulation. It is not suitable for non-stop operation environment.

[0004] The main goal of the technicians is to provide a new method for taking power from power cables with an insulating protective layer, to ensure convenience and safety during the power cable inspection process, to reduce the difficulty of operations for grassroots power operation and maintenance workers, and to avoid major personal injury or property loss. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a reusable safe wire-taking clamp device, which has the characteristics of reliable connection, large power-taking load, simple and safe operation, and reusability. It causes less damage to user cables during power-taking operations and can easily restore the insulating shell.

[0006] A technical solution to achieve the above object is: a reusable safe wire-taking clamp device, comprising a plastic shell, a square tube fixing frame, a cable bushing and a power-taking structure;

[0007] The square tube fixing frame is arranged in the plastic shell, and is used to support the cable bushing and the power taking structure; the cable bushing is an arc surface structure, and the cable bushing is clamped to the square tube fixing frame and the open part of the plastic shell;

[0008] The power supply structure is arranged inside the plastic shell, and the power supply structure includes a clamping screw, a bracket plate and a cable socket. The tip of the clamping screw faces the cable bushing, and the tail end of the clamping screw is an operating socket. The plastic shell is provided with an opening facing the operating socket. The clamping screw rotates through a threaded structure and displaces relative to the cable bushing at the same time. The bracket plate is a conductive copper plate, which is respectively connected to the clamping screw and the cable socket, and the cable socket faces the outside of the plastic shell.

[0009] Furthermore, the cable bushing is rotatably and detachably clamped on the square tube fixing frame.

[0010] Furthermore, a cable limiting structure is provided at one end of the arc surface structure of the cable bushing and a power supply slot is provided at the other end, and the tip of the clamping screw extends into the power supply slot of the cable bushing.

[0011] Furthermore, the end of the clamping screw is a spherical structure.

[0012] Furthermore, the power supply structure also includes a screw bracket, and the screw bracket supports the clamping screw.

[0013] Furthermore, the operation plug interface is a hexagonal structure.

[0014] The invention discloses a reusable safe wire-taking clamp device, which uses a pointed stainless steel clamping screw as a contact for entering the cable. The screw is rotated by a hexagonal insulating wrench so that the pointed tip is pressed into the cable insulation surface and squeezed between multiple copper wires to take out electricity, ensuring that the end of the clamping screw has a large contact area with the copper wire and causing less damage to the user's cable. The outside of the wire-taking clamp device is a closed plastic shell, and the cable to be taken out is limited by a cable bushing, and the power is output through the cable socket, which ensures the insulation performance of the device and reduces the risk during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A cross-sectional view of a reusable safe wire-removing clamp device according to the present invention;

[0016] Figure 2 This is a schematic diagram of a reusable safe wire-taking clamp device of the present invention when inserting a cable during a power-taking operation. DETAILED DESCRIPTION

[0017] In order to better understand the technical solution of the present invention, the following is a detailed description through specific embodiments:

[0018] See also Figure 1The invention discloses a reusable safety wire-taking clamp device, comprising a plastic housing 1, a square tube fixing frame 2, a cable bushing 3 and a wire-taking structure. The wire-taking structure is composed of a clamping screw 41, a screw bracket 42, a bracket plate 43 and a cable socket 44.

[0019] The plastic shell 1 is a spliced ​​structure. After the splicing is completed, a closed covering is formed for the safe wire-taking clamp device. An opening is provided at its end for placing the cable bushing 3. The shape design of the plastic shell 1 is suitable for operators to hold, and the operation is safe and convenient. The square tube fixing frame 2 is arranged in the plastic shell 1 to support the cable bushing 3 and the power-taking structure.

[0020] The cable bushing 3 is an arc surface structure, one end of which is provided with a cable limiting structure 31 and the other end is provided with a power supply slot 32. The cable bushing 3 is rotatably and detachably connected to the square tube fixing frame, and different types of cable bushings 3 are matched to cables of different sizes to stably fix the power supply cable. The cable bushing 3 disperses the force on the cable when the clamping screw 41 is pressed into the cable, reducing the deformation of the cable. After the cable bushing 3 is placed in the cable and rotated into place, it is stuck in the fixing frame. The cable limiting structure 31 ensures that when the tip of the clamping screw 41 is pressed into the cable, the cable will not fall out upward.

[0021] The power supply structure is arranged inside the plastic shell. The clamping screw 41 is supported by the screw bracket 42 and the bracket plate 43, and its tip faces the cable bushing 3, extends into the power supply slot 32 of the cable bushing 3, and is limited by the power supply slot 32. The end of the clamping screw 41 is a spherical structure, which ensures that the tip squeezes the copper core wire as much as possible when it contacts the copper core of the cable, so that the tip squeezes into the copper core, and the stroke of the tip part ends at the center of the cable, which can ensure the effective power supply load. The tail end of the clamping screw 41 is an inner hexagonal structure, and an opening facing the operating plug interface is provided on the plastic shell for rotating the locking screw 41 through the inner hexagonal insulating wrench. The clamping screw 41 rotates through the threaded structure and displaces relative to the cable bushing 3 at the same time, so as to squeeze into the copper core of the cable. The bracket plate 43 is a conductive copper plate, which connects the clamping screw 41 and the cable socket 44 respectively, and the cable socket 44 faces the outside of the plastic shell. The power cable is connected via the cable socket 44. The connecting cable should be removed when installing the wire clamp to ensure safe operation.

[0022] See also Figure 2 , the present invention is described in detail below in conjunction with specific operating steps.

[0023] When using the reusable safe wire-drawing clamp device of the present invention to perform power-drawing operations, first select a cable bushing 3 that matches the diameter of the cable 5 and install it on the square tube fixing frame 2. At this time, the end of the clamping screw 41 extends into the power-drawing slot 32, and then the cable is placed in the cable bushing 3 so that the end of the clamping screw 41 is aligned with the insulating outer layer of the cable 5 to locate the power-drawing point. Then rotate the cable bushing 3 so that the cable limiting structure 31 limits the cable 5 to prevent it from slipping out. Then rotate the clamping screw 41 so that its end squeezes into the cable 5 until it reaches the core of the cable 5. Finally, connect the power-drawing cable to the cable socket 44 to complete the power-drawing operation.

[0024] Compared with the prior art, the present invention has the following technical advantages:

[0025] 1. This device can safely and reliably obtain electricity and is easy to operate. It does not touch any electrical parts during operation. It is safe to operate and can be used multiple times.

[0026] 2. The clamping screw of the present invention squeezes into the copper core, minimizing the damage to the copper core of the user cable (the copper core is only slightly deformed in an ideal state);

[0027] 3. The insulation layer is damaged to form a small round hole where the clamping screw is pressed in, which makes it convenient to restore the insulation layer after power is removed.

[0028] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A reusable safe wire-taking clamp device, comprising a plastic shell, a square tube fixing frame, a cable bushing and a power-taking structure, characterized in that: The square tube fixing frame is arranged in the plastic shell, and is used to support the cable bushing and the power taking structure; the cable bushing is an arc surface structure, and the cable bushing is clamped to the square tube fixing frame and the open part of the plastic shell; The power-taking structure is arranged inside the plastic shell, and the power-taking structure includes a clamping screw, a bracket plate and a cable socket. The tip of the clamping screw faces the cable bushing, and the tail end of the clamping screw is an operation plug interface. The plastic shell is provided with an opening facing the operation plug interface. The clamping screw rotates through a threaded structure and simultaneously moves relative to the cable bushing. The bracket plate is a conductive copper plate, which is respectively connected to the clamping screw and the cable socket. The cable socket faces the outside of the plastic shell. The power supply structure further includes a screw support, and the screw support supports the clamping screw. One end of the arc surface structure of the cable bushing is provided with a cable limiting structure and the other end is provided with a power supply slot, and the tip of the clamping screw extends into the power supply slot of the cable bushing. The clamping screw is supported by a screw support and a support plate, and its tip is directed toward the cable bushing, extends into the power-taking slot of the cable bushing, and is limited by the power-taking slot. The end of the clamping screw extends into the power-taking slot, and then the cable is placed in the cable bushing so that the end of the clamping screw is aligned with the insulating outer layer of the cable to locate the power-taking point, and then the cable bushing is rotated so that the cable limiting structure limits the cable to prevent it from falling out.

2. A reusable safe wire clip device according to claim 1, characterized in that: The cable bushing is rotatably and detachably clamped on the square tube fixing frame.

3. A reusable safe wire clip device according to claim 1, characterized in that: The end of the clamping screw is a spherical structure.

4. A reusable safe wire clip device according to claim 1, characterized in that: The operation plug interface is a hexagonal structure.

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