CN101982908A - Portable inspection ground wire device - Google Patents

Abstract

A portable maintenance ground wire device. It relates to the improvement of the ground wire device. Small size, easy installation, and reliable connection with the busbar. It includes an insulating rod and a busbar connector, and the busbar connector includes a rotary rod and a clamp; the rotary rod has a shaft, a bayonet and a threaded rod, and the bayonet protrudes from the surface of the shaft; the threaded rod and the shaft are coaxial, and the fixed device At the far end of the shaft; the end face of the insulating rod is provided with a hole that can accommodate the proximal end of the shaft, and the hole wall is provided with a groove that matches the bayonet, so that the insulating rod can drive the shaft through the groove and the bayonet, and then drive the rotary rod Rotation; the wire clamp is composed of a receiving piece, a connecting piece and a working piece to form a concave shape. The central part of the working piece is provided with a threaded hole adapted to the threaded rod, and the edge of the working piece is provided with a connecting hole for connecting the ground wire. The invention belongs to split structure, and one insulating rod can be used for multiple purposes, which not only greatly reduces the overall volume of the grounding wire, but also is convenient to carry.

Description

A portable maintenance grounding wire device

technical field

The invention relates to a grounding wire device for power equipment maintenance, in particular to the improvement of the grounding wire device.

Background technique

The fixing part of the traditional ground wire has a thickness of 30mm, a width of at least 60mm, and a length of at least 100mm. The distance between busbars is generally about 30mm to 50mm. In such a small gap, the traditional grounding wire is difficult to install inside the box of the box transformer and cable branch box due to its size and structure. During the maintenance of cable lines, it is often difficult to implement safety measures due to the small distance between the internal busbars of the box substation and the cable branch box, and the equipped grounding wire clamp structure does not match the internal structure of the box. , The staff tried every means to complete the installation of the grounding wire. The process of assembling and disassembling the grounding wire was time-consuming and laborious, which seriously affected work efficiency. In addition, for the existing grounding wires, after the maintenance and installation are completed, the door of the cable branch box cannot be closed. If the maintenance construction site is not near the branch box, it will be very embarrassing. Usually, personnel must be arranged to guard the site, which will increase the maintenance cost. , prone to potential safety hazards.

Contents of the invention

Aiming at the above problems, the present invention provides a small volume, convenient installation, reliable connection with the busbar, and a safe portable maintenance grounding wire device.

The technical solution of the present invention is to include an insulating rod and a busbar connector, the busbar connector includes a rotary rod and a clamp;

The rotating rod has a shaft, a bayonet pin and a threaded rod, and the bayonet pin protrudes from the surface of the shaft; the threaded rod is concentric with the shaft and is fixed at the far end of the shaft;

The end face of the insulating rod is provided with a hole capable of accommodating the proximal end of the shaft, and the wall of the hole is provided with a groove matching the bayonet pin, so that the insulating rod can drive the shaft through the groove and the bayonet pin, and then driving the rotary rod to rotate;

The clamp is composed of a receiving piece, a connecting piece and a working piece to form a concave shape. The central part of the working piece is provided with a threaded hole adapted to the threaded rod, and the edge of the working piece is provided with a ground for connection. Connection holes for wires.

A pair of bayonet pins are arranged on the same circumference of the surface of the shaft; a pair of grooves are arranged on the wall of the hole.

According to the wiring conditions of various box substations and the internal equipment of the cable branch box, the invention provides a technical solution with strong versatility and reliable wiring from the aspects of convenience, reliability, and safety. One of them is the grounding wire fixture (clamp); the other is to improve the connection method between the fixture and the insulating rod. In the way of connection between the fixing piece and the insulating rod, an intermediate part (swivel rod) which can not only realize the connection but also realize the clamping of the bus bar is added. For the fixing part, a concave-shaped structure with a compact structure, a small footprint, and the ability to snap into the busbar from the side is adopted. It cooperates with the rotary rod to clamp the bus bar. Moreover, the device of the present invention can separate the insulating rod after the wire is clamped, so the door of the electrical box can be closed, which greatly improves the safety during operation and saves manpower. The invention belongs to split structure, and one insulating rod can be used for multiple purposes, which not only greatly reduces the overall volume of the grounding wire, but also is convenient to carry.

Description of drawings

Fig. 1 is a structural representation of the present invention

In the figure, 1 is an insulating rod, 11 is an insulating rod head, 12 is a groove, 13 is a hole, 2 is a rotating rod, 21 is an end, 22 is a bayonet pin, 23 is a threaded rod, 3 is a clamp, and 31 is a work piece , 32 is a connecting piece, 33 is a threaded hole, 4 is a busbar, 5 is a ground wire;

Figure 2 is a view from A-A in Figure 1

Figure 3 is a view from direction B-B in Figure 1

Fig. 4 is a structural representation of the neutral wire clip of the present invention

34 is connecting hole among the figure.

Figure 5 is the left side view of Figure 4

Figure 6 is a top view of Figure 4

Fig. 7 is a perspective view of the wire clip of the present invention

Detailed ways

As shown in Figures 1-7, the present invention includes an insulating rod 1 and a busbar connector, and the busbar connector includes a rotary rod 2 and a clamp 3;

The rotating rod 2 has a shaft, a bayonet pin 22 and a threaded rod 23, the bayonet pin 22 protrudes from the surface of the shaft, and the threaded rod 23 is coaxial with the shaft and fixed at the far end of the shaft; The end 21 of the threaded rod 23 is used to "tighten" the bus bar 4. In order to prevent deformation during long-term work, the end 21 is processed to be slightly smaller than the diameter of the threaded rod 23.

The end face of the insulating rod 1 is provided with a hole 13 capable of accommodating the proximal end of the shaft of the rotating rod 2 (that is, the end facing outward), and the hole wall is provided with a groove 12 matching the bayonet pin 22, Make the insulating rod 1 drive the rod body through the groove 12 and the pin 22, and then drive the rotating rod 2 to rotate;

Described clamp 3 is formed concave shape by accepting piece 32, connecting piece and working piece 31, and the central part of described working piece 31 is provided with the threaded hole 33 that is adapted with described threaded rod 23, in the described working piece 31 The edge portion is provided with a connection hole 34 for connecting the ground wire 5 .

A pair of bayonet pins 22 are provided, which are evenly distributed on the same circumference of the shaft surface; a pair of grooves 12 are provided, which are evenly distributed on the wall of the hole.

Claims (2)

1. a portable inspection earthing line apparatus comprises insulating bar and bus connector, it is characterized in that, described bus connector comprises swing arm and wire clamp;

Described swing arm has shaft, bayonet lock and threaded rod, and described bayonet lock protrudes in the shaft surface and is provided with;

Described threaded rod and shaft concentric fixedly are located at the far-end of shaft;

The end face of described insulating bar is provided with the hole that can hold described shaft near-end, and described hole wall is provided with the groove that is complementary with described bayonet lock, makes insulating bar drive described shaft by groove, bayonet lock, and then drives described swing arm rotation;

Described wire clamp constitutes concave shape by accepting sheet, brace and active gage, and the centre of described active gage offers the screwed hole adaptive with described threaded rod, is provided with the connecting hole that is used to connect ground wire in the edge of described active gage.

2. a kind of portable inspection earthing line apparatus according to claim 1 is characterized in that described bayonet lock is provided with a pair of, is distributed on the same circumference on shaft surface; Described groove is provided with a pair of, is distributed on the described hole wall.

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