CN103474797A - Ground clip in switch cabinet - Google Patents

Abstract

The invention relates to a grounding clamp suitable for a switch cabinet, which includes an insulating rod, a clamp main body fixed on the insulating rod and a movable contact arranged on the main body of the clamp; the opening direction of the clamp main body is in line with the insulation The axis direction of the rod is consistent, which includes a beam, a static contact arranged at one end of the beam, and a positioning column arranged at the other end of the beam, and a terminal is arranged on the positioning column; a positioning pin is fixedly arranged on the moving contact. Rod, the positioning rod is sleeved on the positioning post through the positioning hole provided on the positioning post, and a pressure spring is sleeved on the positioning post; the static contact of the knife switch and/or Or the horizontally balanced lead wires are used for ground wire operation, which is convenient and quick, saving time and effort.

Description

A grounding clamp suitable for switch cabinets

technical field

The invention relates to an electric power maintenance tool, in particular to a grounding clamp suitable for a switch cabinet.

Background technique

At present, when the power equipment is overhauled, hanging the ground wire is one of the measures to ensure safety. Existing ground clamps can only be used when the bus bar is suspended or the spacing between the line bars is small. The space in the switch cabinet is narrow and the lead wires are arranged in different directions. ) when it is necessary to hang the ground wire, the conventional ground wire clamp cannot be suspended because the clamping direction is perpendicular to the insulating rod, so that the technical measures to ensure the safety of the staff cannot be effectively implemented.

In view of the above defects, it is necessary to invent a grounding clamp that can quickly and effectively ground the static contacts of the knife switch and/or the leads arranged in a horizontal balance in the switch cabinet, so as to ensure the life safety of the staff involved in the operation.

Contents of the invention

The technical problem to be solved by the present invention is to provide a grounding clamp with simple structure, low cost and convenient for quickly and effectively grounding the static contacts of the knife switch and/or the lead wires (or bus bars) arranged in a horizontal balance in the switch cabinet.

The present invention adopts following technical scheme:

The present invention comprises an insulating rod, a clamp main body fixed on the insulating rod, and a moving contact provided on the clamp main body; the clamp main body is U-shaped, which includes a beam, a static contact arranged at one end of the beam, and a set On the positioning column at the other end of the beam, the positioning column is provided with a terminal, and the insulating rod is arranged on the outside of the beam, so that the opening direction of the main body of the clamp is upward; the moving contact is fixed on the There is a positioning rod, and the positioning rod is sleeved on the positioning post through a positioning hole arranged on the positioning post. A compression spring is sleeved on the positioning rod, and the moving contact and the static contact are pressed by the compression spring. and together.

As a further improvement of the present invention, the upper end of the side where the movable contact and the static contact meet is chamfered or rounded.

As a further improvement of the present invention, the insulating rod is arranged on the side of the beam close to the positioning column.

As a further improvement of the present invention, there are two positioning rods, and there are two corresponding positioning holes and compression springs.

As a further improvement of the present invention, an arc-shaped groove is provided on the inner side of the static contact.

As a further improvement of the present invention, anti-slip lines are provided on one side where the moving contact and the static contact meet.

The positive effects of the present invention are as follows:

When using the present invention, since the opening direction of the wire clamp is consistent with the direction of the insulating rod, when the wire clamp is used to clamp the knife switch static contact and/or the lead wires (or bus bars) arranged in a horizontal balance in the switch cabinet, the insulating rod will not It will hinder the operation, so it is convenient to use the grounding wire clip in the switch cabinet with narrow space, especially if the insulating rod is set on the side of the beam close to the positioning column, when multiple rows of lead wires in the depth direction in the switch cabinet need to be grounded at the same time At the same time, because the position where the insulating rod and the moving contact are in contact with the static contact is staggered, the insulating rod can avoid the front lead wire (or bus bar) and smoothly clamp the rear row lead wire; the upper end of the moving contact It is set to be chamfered or rounded, which is more convenient to clamp busbars, lead wires or static contacts of knife switches during use, saving time and improving work efficiency.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention;

Accompanying drawing 2 is the structure schematic diagram of separation of the moving contact and the static contact of the present invention;

Accompanying drawing 3 is a schematic diagram of the structure of positioning holes provided on the positioning column of the present invention.

In the accompanying drawings: 1 insulation rod, 2 beam, 3 static contact, 3-1 arc groove, 4 moving contact, 5 positioning rod, 6 pressure spring, 7 binding post, 8 positioning post, 8-1 positioning hole.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in the accompanying drawings 1-3, a grounding clamp suitable for use in a switch cabinet includes an insulating rod 1, a clamp body fixed on the insulating rod 1, and a moving contact 4 arranged on the main body of the wire clamp. The clamp main body includes a beam 2, a static contact 3 arranged at one end of the beam 2, and a positioning column 8 arranged at the other end of the beam 2. The positioning column 8 is provided with a terminal 7 connected to a ground wire. 7 is the bolt screwed on the positioning post 8 to facilitate the connection of the ground wire. Before use, the ground wire needs to be connected to the positioning post 8 through the terminal post 7; as shown in Figure 1, the main body of the clamp is generally U-shaped, and its opening The direction is upwards, which is consistent with the direction of the insulating rod 1, so when using the wire clamp to clamp the knife switch static contact and/or the lead wires arranged in a horizontal balance in the switch cabinet, the insulating rod 1 will not hinder the operation, which is convenient for grounding Cable clamps are used in switch cabinets where space is limited.

As shown in Figure 1, the insulating rod 1 is arranged on the side of the beam 2 close to the positioning column 8. When multiple rows of lead wires in the depth direction in the switch cabinet need to be grounded at the same time, because the moving contact 4 and the static contact The positions of the 3 contacted surfaces and the insulating rod 1 are staggered, so that the insulating rod 1 can avoid the leading wires of the front row and smoothly clamp the leading wires of the rear row.

As shown in Figure 2, the upper end of the side where the movable contact 4 and the static contact 3 meet is chamfered or rounded, which is more convenient to clamp the busbar, lead wire or knife gate static contact, etc. during use, saving Time, improve work efficiency, in addition, setting the upper corner of the inner side of the corresponding static contact 3 as chamfering or rounded corners can also achieve the same effect; the moving contact 4 is fixedly provided with two positioning rods 5. The positioning rod 5 is sleeved on the positioning column 8 through the positioning hole 8-1 provided on the positioning column 8, and can slide in the positioning hole 8-1. The positioning rod 5 is sleeved with Compression spring 6, under the action of compression spring 6, the moving contact 4 and the static contact 3 are pressed together; the moving contact 4 is fixed with two positioning rods 5, and the moving contact 4 is relatively stable during use, and will not go up and down Shake, easy to use.

As shown in Figure 1, the side where the moving contact 4 is in contact with the static contact 3 is provided with anti-skid lines, specifically corrugated protrusions or serrated protrusions, which can make the clamp and lead wire or the static contact of the knife switch effective. The contact and clamping effect is better, it is not easy to slip, and it can prevent accidents caused by poor contact. Setting one side of the corresponding static contact 3 as a corrugated or jagged protrusion can also have the same effect. The inner side of the static contact 3 is provided with an arc-shaped groove 3-1, and when the bare wire is grounded, the bare wire with a circular cross section can be clamped in the arc-shaped groove 3-1, and it is not easy to slip off .

The implementation manners described above are only preferred embodiments of the present invention, rather than an exhaustive list of feasible implementations of the present invention. For those skilled in the art, any obvious changes made without departing from the principle and spirit of the present invention should be considered to be included in the protection scope of the claims of the present invention.

Claims (6)

1. one kind is applicable to the interior earthing clamp of switch cubicle, and it is characterized in that: it comprises insulating bar (1), is fixed on the wire clamp main body on insulating bar (1) and is arranged on the moving contact (4) on the wire clamp main body;

Described wire clamp main body is U-shaped, the reference column (8) that it comprises crossbeam (2), is arranged on the fixed contact (3) of crossbeam (2) one ends and is arranged on crossbeam (2) other end, be provided with binding post (7) on described reference column (8), described insulating bar (1) is arranged on crossbeam (2) outside, makes the opening direction of described wire clamp main body upward;

Be fixedly installed backstay (5) on described moving contact (4), described backstay (5) is nested with on reference column (8) by the location hole (8-1) be arranged on reference column (8), be equipped with stage clip (6) on described backstay (5), and by stage clip (6) make moving contact (4) and fixed contact (3) press with together with.

2. a kind of earthing clamp be applicable in switch cubicle according to claim 1, it is characterized in that: described moving contact (4) is chamfering or rounding with the upper end of the one side of fixed contact (3) joint.

3. a kind of earthing clamp be applicable in switch cubicle according to claim 1, it is characterized in that: described insulating bar (1) is arranged on the upper side near reference column (8) of crossbeam (2).

4. according to the described a kind of earthing clamp be applicable in switch cubicle of claim 1-3 any one, it is characterized in that: described backstay (5) is two, and corresponding location hole (8-1) and stage clip (6) are two.

5. according to the described a kind of earthing clamp be applicable in switch cubicle of claim 1-3 any one, it is characterized in that: the inboard of described fixed contact (3) is provided with arc groove (3-1).

6. according to the described a kind of earthing clamp be applicable in switch cubicle of claim 1-3 any one, it is characterized in that: described moving contact (4) is provided with anti-slip veins with the one side of fixed contact (3) joint.

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