CN204464141U - A new type of grounding structure device - Google Patents

Abstract

The utility model discloses a kind of Novel grounding structure device, comprise base, the rotating mechanism be arranged on base, the conductive plate be connected with earth bus, the contact cover be arranged on bus bar copper row, described base is provided with fixed support, described fixed support is connected with conductive plate by extension spring, described rotating mechanism drives conductive plate stretching extension spring, described conductive plate is equidistantly fixed with A, B, C three-phase conductive pole side by side, and described three conductive poles slide respectively through the through hole on fixed support and overlap with corresponding contact and contact or be separated.This apparatus structure is simple, and eliminate traditional disconnecting link structure, take volume little, earthed switch is independent from traditional tri-station isolating switch, switch be only grounded and unearthed between switching, thus reduce the possibility of misoperation.

Description

A new type of grounding structure device

technical field

The utility model relates to the technical field of electrical equipment, in particular to a novel grounding structure device.

Background technique

Many existing switch cabinets use three-position isolating grounding switches, and most of the grounding parts use knife-gate coordination to realize the grounding function. Three-position isolating grounding switches integrate the functions of both the isolating switch and the grounding switch The knife realizes the switching of the closing, opening and grounding states. Misoperation may occur during the use of the three-station switching, and the structure of the knife switch takes up a lot of space, which increases the volume of the switch cabinet.

Contents of the invention

In order to overcome the disadvantages of the above-mentioned prior art, the utility model provides a new grounding structure device with compact structure, small volume and less misoperation.

The technical scheme that the utility model solves its technical problem adopts is:

A new type of grounding structure device, including a base, a rotating mechanism arranged on the base, a conductive plate connected to the grounding busbar, and a contact cover installed on the copper bar of the busbar. The base is provided with a fixed bracket, and the fixed The bracket is connected to the conductive plate through the extension spring, and the rotating mechanism drives the conductive plate to stretch the extension spring. The three-phase conductive columns A, B, and C are fixed on the conductive plate equidistantly and side by side, and the three conductive columns are respectively Slidingly penetrates through the through hole on the fixing bracket and contacts or separates with the corresponding contact sleeve.

As an improvement of the above-mentioned technical solution, the rotating mechanism includes a limit bracket pierced on the conductive column, an insulating rotating shaft arranged at the left and right ends of the base, and a crank arm fixed at both ends of the insulating rotating shaft. The right end is provided with a groove, and the insulating rotating shaft is located at the left and right ends of the limit bracket and is provided with a slide block that can slide up and down in the groove.

As an improvement of the above technical solution, the limit bracket is provided with a bump in contact with the conductive plate.

As an improvement of the above-mentioned technical solution, the end of the conductive column which is located at the mating contact sleeve has a smooth curved surface, and the opening at the corresponding position of the contact sleeve adopts a circular arc transition.

As an improvement of the above technical solution, the conductive column is in the shape of a cylinder.

The beneficial effects of the utility model have:

The device drives the conductive plate to move by operating the rotating mechanism, thereby driving the conductive column to separate from the contact cover. At this time, the extension spring is in a stretched state and the switch cabinet is in an ungrounded state. Operating the rotating mechanism quickly restores the extension spring to a normal state and conducts electricity. The column is in contact with the contact sleeve, the switchgear is in the grounding state, the structure is simple, the traditional knife switch structure is omitted, and the occupied volume is small. The grounding switch is independent from the traditional three-position isolating switch, and the switch only realizes the switch between grounding and ungrounding. switch between, thereby reducing the possibility of misoperation.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described, wherein:

Fig. 1 is a structural schematic diagram 1 when the utility model embodiment is in a grounded state;

Fig. 2 is a structural schematic diagram II when the utility model embodiment is in a grounded state;

Fig. 3 is a schematic diagram of the structure when the insulating shaft is hidden in Fig. 1;

Fig. 4 is a schematic structural view of an insulating rotating shaft in an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of the limit bracket in the embodiment of the utility model.

Detailed ways

Referring to Fig. 1 and Fig. 3, a grounding structure of a switchgear of the present utility model includes a base 1, a conductive plate 3, and three contact sets 4 arranged side by side at equal distances, wherein the conductive plate 3 is connected to the grounding plate not shown in the figure. The busbars are connected, and the contact sleeve 4 is installed on the unillustrated busbar copper bar. The base 1 is provided with a fixed bracket 5, and the fixed bracket 5 is connected with the conductive plate 3 through a tension spring 6, and the conductive plate 3 is equidistant and fixed side by side. A, B, and C three-phase conductive columns 7 are provided, and three through holes respectively matched with the conductive columns 7 are arranged on the fixed bracket 5, and the three conductive columns 7 respectively slide through the through holes on the fixed bracket 5 and are connected with the corresponding phases. The corresponding contact sets 4 are in contact or separated.

Referring further to Fig. 2, Fig. 4 and Fig. 5, a rotating mechanism 2 is also provided on the base 1, and the rotating mechanism 2 includes a limit bracket 21, an insulating rotating shaft 22 arranged at the left and right ends of the base 1, and two ends fixed on the insulating rotating shaft 22. Knuckle arm 23, limit bracket 21 left and right ends are all provided with groove 211, and insulation rotating shaft 22 is positioned at limit bracket 21 left and right ends and is provided with slide block 221 that can slide up and down in groove 211, and limit bracket 21 is provided with There is a bump 212 in contact with the conductive plate 3. Since the conductive column 7 can only move back and forth in the through hole on the fixed bracket 5, the limit bracket 21 is penetrated on the conductive column 7. When the insulating rotating shaft 22 rotates, the limit bracket 21 is limited by the conductive column 7, and can only move along the axial direction of the conductive column 7, and at the same time, the slider 221 slides up and down in the groove 211.

In addition, the conductive column 7 is located at the end that cooperates with the contact cover 4 and has a smooth curved surface, and the opening of the corresponding position of the contact cover 4 adopts a circular arc transition, so that the two are tightly matched and reliable, and the conductive column 7 adopts a cylindrical shape Its conductivity is increased, the structure is simple, the traditional knife gate structure is omitted, and the occupied volume is small.

When the crank arm 23 drives the insulating shaft 22 to rotate counterclockwise as shown in Figure 1, the bump 212 on the limit bracket 21 drives the conductive plate 3 and the conductive column 7 to move horizontally to the right, and the conductive column 7 and the contact cover 4 Separated, the switchgear is in an ungrounded state and the tension spring 6 is in a stretched energy storage state; on the basis of the grounded state, when the crank arm 23 drives the insulating shaft 22 to rotate clockwise, the limit bracket 21 moves horizontally to the left, due to the pull The spring 6 is in the state of stretching energy storage, and the extension spring 6 drives the conductive plate 3 and the conductive column 7 to move horizontally to the left until the extension spring 6 is in a normal state, the conductive column 7 is in contact with the contact cover 4, and the switch cabinet is in the grounding state. The operation is very convenient. The grounding switch is independent from the traditional three-position isolation switch. Compared with the three-position switching, the switch only realizes the switching between grounding and ungrounding, thereby reducing the possibility of misoperation.

The above is only a preferred embodiment of the utility model, but the utility model is not limited to the above-mentioned embodiment, as long as it achieves the technical effect of the utility model by any same or similar means, it should belong to the protection of the utility model scope.

Claims (5)

1. A new type of grounding structure device, characterized in that it includes a base (1), a rotating mechanism (2) arranged on the base (1), a conductive plate (3) connected to the grounding busbar, and a copper bar installed on the busbar The contact cover (4) on the base (1) is provided with a fixed bracket (5), the fixed bracket (5) is connected with the conductive plate (3) through a tension spring (6), and the rotating mechanism (2) Drive the conductive plate (3) to stretch the tension spring (6), and the conductive plate (3) is equidistantly fixed with A, B, C three-phase conductive columns (7), and the three conductive columns (7) respectively slide through the through holes on the fixing bracket (5) and contact or separate from the corresponding contact sleeve (4). 2. A new grounding structure device according to claim 1, characterized in that: the rotating mechanism (2) includes a limit bracket (21) pierced on the conductive column (7), set on the base (1 ) the insulating rotating shaft (22) at the left and right ends and the crank arm (23) fixed at both ends of the insulating rotating shaft (22), the left and right ends of the limit bracket (21) are provided with grooves (211), and the insulating The rotating shaft (22) is located at the left and right ends of the limit bracket (21) and is provided with a slider (221) that can slide up and down in the groove (211). 3. A new grounding structure device according to claim 2, characterized in that: the limit bracket (21) is provided with a bump (212) in contact with the conductive plate (3). 4. A new type of grounding structure device according to claim 1, characterized in that: the conductive post (7) is located at the end that cooperates with the contact cover (4) and has a smooth curved surface, and the contact cover (4) ) The opening at the corresponding position adopts a circular arc transition. 5. A novel grounding structure device according to claim 4, characterized in that: the conductive column (7) is in the shape of a cylinder.