CN218887052U

CN218887052U - Grounding switch and high-voltage switch cabinet with same

Info

Publication number: CN218887052U
Application number: CN202223298243.7U
Authority: CN
Inventors: 南海峡; 王军
Original assignee: Zhejiang Lingkun Electric Co ltd
Current assignee: Zhejiang Lingkun Electric Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-04-18
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses a structure is more firm, and be difficult for earthing switch of fastener and have this earthing switch's high tension switchgear. The technical scheme adopted comprises the following steps: the mounting bracket, establish three insulators of mounting bracket one end, establish the insulating bar at the mounting bracket other end, establish respectively the static contact of insulator upper end and establish on the insulating bar with the static contact on/off complex moving contact, the moving contact lower extreme passes through the rotatable installation of contact mounting panel on the insulating bar, at least two sides the other first spring that is equipped with of moving contact, first spring upper end through last spring holder on first pivot with contact mounting panel rotatable coupling, lower extreme pass through the second pivot on the lower spring holder with mounting bracket rotatable coupling.

Description

Grounding switch and high-voltage switch cabinet with same

Technical Field

The utility model belongs to the power equipment field, concretely relates to earthing switch.

Background

The grounding switch is a mechanical grounding device which releases static electricity of the maintained equipment and a return circuit and ensures the personal safety of maintenance personnel during power failure maintenance. It can withstand current for a certain time in abnormal situations (such as short-circuits) but does not pass load current in normal situations, and is usually part of an isolating switch. The structure of the traditional grounding switch is as follows: the chinese utility model patent with the patent application number of "202120655344.1", the name "a cubical switchboard earthing switch contact detection device that targets in place" or the patent application number of "200920216193.9", the name "an earthing switch and medium voltage switch subassembly that has this earthing switch" shows, includes: the device comprises an installation frame, three insulators arranged at one end of the installation frame, an insulating operating rod arranged at the other end of the installation frame, a static contact arranged at the upper end of the insulator respectively, and a moving contact arranged on the insulating operating rod and matched with the static contact in an on/off manner, wherein the lower end of the moving contact is fixedly connected with the insulating operating rod; in addition, the moving contact and the insulating operating rod are in hard connection, so that the clamping piece between the moving contact and the fixed contact is easily caused, and the brake cannot be separated.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a structure is more firm, and the earthing switch of difficult fastener and have this earthing switch's high tension switchgear.

In order to solve the above problem, the utility model discloses a technical scheme include: the mounting bracket, establish three insulators of mounting bracket one end, establish the insulating bar at the mounting bracket other end, establish respectively the static contact of insulator upper end and establish on the insulating bar with the static contact on/off complex moving contact, its characterized in that: the moving contact lower extreme passes through the contact mounting panel rotatable installation on the insulating bar, at least two sides the other first spring that is equipped with of moving contact, first spring upper end through last spring holder on first pivot with contact mounting panel rotatable coupling, lower extreme pass through down the spring holder on the second pivot with mounting bracket rotatable coupling, the insulating bar corresponds contact mounting panel both sides are equipped with the operation panel, be equipped with the arc wall on the operation panel, first pivot both ends are established in the arc wall, the arc wall both ends be equipped with first pivot complex location portion.

The earthing switch is characterized in that: the movable contact is composed of two oppositely arranged contact pieces, and the contact mounting plate is clamped between the contact pieces and is clamped and connected through a C-shaped buckle.

The earthing switch is characterized in that: the joints of the C-shaped buckle, the contact plate and the contact mounting plate are connected through an insulating connecting rod.

The earthing switch is characterized in that: the mounting bracket is formed by connecting preceding "L" shaped plate and back "L" shaped plate, two liang of relative settings of preceding "L" shaped plate, first spring setting is two between the preceding "L" shaped plate, the welding of back "L" shaped plate both ends has "L" shape supporting legs, all be equipped with the mounting hole on preceding "L" shaped plate, "L" shape supporting legs.

The earthing switch is characterized in that: two contact pieces are provided with pull rods at the upper ends, and second springs are arranged between the two ends of each pull rod and the corresponding contact piece.

The earthing switch is characterized in that: and a brake separating indication board is arranged on the insulating operating rod.

The earthing switch is characterized in that: and shaft sleeves are arranged between the operating plate and the mounting frame and between the operating plate and the contact mounting plate.

The earthing switch is characterized in that: and a positioning groove is formed in one side of the insulating operating rod, and a positioning protruding part matched with the positioning groove in a positioning mode is arranged on the shaft hole in the lower end of the contact mounting plate.

The earthing switch is characterized in that: the contact mounting plate is overlapped by two pieces.

The utility model provides a high tension switchgear, includes the cabinet body, establishes interlock on the cabinet body, its characterized in that: the cabinet is internally provided with any one of the earthing switches, and the interlocking device is connected with the insulating operating rod of the earthing switch through an earthing interlocking crank arm mechanism.

The utility model discloses an earthing switch and have this earthing switch's high tension switchgear advantage as follows: the lower end of the moving contact is rotatably connected with the insulating operating rod, the moving contact is driven to rotate by the operating plate fixedly connected with the insulating operating rod, impact force produced during opening and closing operations acts on the joint of the operating plate and the insulating operating rod, the connection between the moving contact and the insulating operating rod cannot be influenced, the operating plate is larger in stress area and better in durability, and the operating plate is more convenient to replace even if the operating plate is abraded; in addition, the lower end of the moving contact is rotatably connected with the insulating operating rod, so that certain deviation rectifying capacity is achieved, and clamping is not prone to occurring.

The present invention will be further explained with reference to the drawings attached to the specification.

Drawings

Fig. 1 is a schematic structural diagram of the grounding switch of the present invention;

fig. 2 is a cross-sectional view of the ground switch of the present invention;

fig. 3 is a schematic structural diagram of the moving contact of the present invention;

FIG. 4 is a schematic structural diagram of the operation panel of the present invention;

fig. 5 is a schematic structural view of the contact mounting plate of the present invention;

fig. 6 is a schematic structural diagram of the high-voltage switch cabinet of the present invention.

Detailed Description

Example 1:

referring to fig. 1-5, the utility model discloses an earthing switch, include mounting bracket 1, establish three insulators 2 of 1 one end of mounting bracket, establish the insulating bar 3 of the 1 other end of mounting bracket, establish respectively static contact 4 of 2 upper ends of insulator with establish on insulating bar 3 with static contact 4 on/off complex moving contact 5. And the insulator 2 is fixed with the mounting frame 1 and the static contact 4 by adopting a screw rod. The lower end of the movable contact 5 is rotatably arranged on the insulating operating rod 3 through a contact mounting plate 6. The moving contact 5 and the contact mounting plate 6 are fixed by a screw or a rivet. And a first spring 7 which is obliquely arranged is arranged beside the moving contact 5 at the two corresponding sides of the mounting rack 1. The upper end of the first spring 7 is rotatably connected with the contact mounting plate 6 through a first rotating shaft 9 on an upper spring seat 8, and the lower end of the first spring 7 is rotatably connected with the mounting frame 1 through a second rotating shaft 11 on a lower spring seat 10. The insulating operation rod 3 corresponds the contact mounting panel 6 both sides are equipped with operation panel 12, operation panel 12 with be fixed connection between the insulating operation rod 3. The operating plate 12 is provided with an arc-shaped groove 13, two ends of the first rotating shaft 9 are arranged in the arc-shaped groove 13, and two ends of the arc-shaped groove 13 are provided with positioning parts 14 matched with the first rotating shaft 9. The insulating operating rod 3 is rotated to drive the operating plate 12 to rotate synchronously, and the operating plate 12 drives the moving contact 5 to rotate by utilizing the positioning part 14, so that the switching-on/off is realized. When the switch is switched on, when the insulating operating rod 3 rotates for a certain angle, the elastic force of the first spring 7 acts on the elevation direction of the contact mounting plate 6, so that the movable contact 5 can be assisted to automatically switch on; when the insulating operating rod 3 rotates for a certain angle during opening, the elastic force of the first spring 7 acts on the depression angle direction of the contact mounting plate 6, so that the moving contact 5 can be assisted to automatically open.

Preferably, the movable contact 5 is composed of two opposite contact pieces 501, and the contact mounting plate 6 is clamped between the contact pieces 501 and is clamped by a "C" shaped buckle 15. The joints of the C-shaped buckle 15, the contact plate 501 and the contact mounting plate 6 are connected through an insulated connecting rod 16. So as to improve the stability and strength of the connection between the moving contacts 5.

Preferably, the mounting bracket 1 is formed by connecting a front L-shaped plate 17 and a rear L-shaped plate 18, the front L-shaped plate 17 is arranged oppositely, the first spring 7 is arranged between the front L-shaped plate 17, L-shaped supporting legs 19 are welded at two ends of the rear L-shaped plate 18, and mounting holes 24 are formed in the front L-shaped plate 17 and the L-shaped supporting legs 19. The L-shaped plate 17, the rear L-shaped plate 18 and the L-shaped supporting leg 19 can be integrally formed by pressing a zinc alloy plate, so that the production is convenient, and the strength is ensured.

Preferably, a pull rod 20 is arranged at the upper end of each of the two contact plates 501, a second spring 21 is arranged between each of the two ends of the pull rod 20 and the contact plate 501, and the movable contact 5 can be clamped on the fixed contact 4 more stably under the action of the pull rod 20 and the second spring 21, so as to ensure good contact.

Preferably, the insulating operating rod 3 is provided with a brake-off indication board 22 so that a user can conveniently judge the current working state of the grounding switch.

Preferably, shaft sleeves 23 are arranged between the operating plate 12 and the mounting frame 1 and between the operating plate and the contact mounting plate 6, so that friction between the operating plate and the mounting frame is reduced, and the durability is improved.

Preferably, insulating bar 3 one side is equipped with constant head tank 25, be equipped with on the shaft hole 26 of contact mounting panel 6 lower extreme with constant head tank 25 location complex location bellying 27, through the location bellying 27 and the location cooperation of constant head tank 25, in order to realize contact mounting panel 6 with fixed connection between the insulating bar 3.

Preferably, the contact mounting plate 6 is provided in two overlapping pieces to further improve strength.

Example 2:

referring to fig. 6, the utility model discloses a high tension switchgear, include the cabinet body 28, establish interlock 29 on the cabinet body 28, install embodiment 1 in the cabinet body 28 earthing switch a, interlock 29 through earthing interlocking turning arm mechanism 30 with earthing switch a's insulating bar 3 is connected. When the interlocking device 29 is operated, the on/off of the grounding switch a can be synchronously driven, and the safety of the switch cabinet is further improved.

As described above, the present invention is not limited to the above embodiments, and although the present invention has been disclosed in the above embodiments, it is not limited to the above embodiments, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the technical scope of the present invention.

Claims

1. The utility model provides an earthing switch, includes mounting bracket (1), establishes three insulators (2) of mounting bracket (1) one end, establishes insulating bar (3) of mounting bracket (1) other end, establish respectively static contact (4) of insulator (2) upper end and establish on insulating bar (3) with static contact (4) on/off complex moving contact (5), its characterized in that: moving contact (5) lower extreme passes through contact mounting panel (6) rotatable installation on insulating bar (3), at least two sides moving contact (5) other be equipped with first spring (7), first spring (7) upper end through last pivot (9) on spring holder (8) with contact mounting panel (6) rotatable coupling, lower extreme through second pivot (11) on lower spring holder (10) with mounting bracket (1) rotatable coupling, insulating bar (3) correspond contact mounting panel (6) both sides are equipped with operation panel (12), be equipped with arc wall (13) on operation panel (12), establish at first pivot (9) both ends in arc wall (13), arc wall (13) both ends be equipped with first pivot (9) complex location portion (14).

2. The grounding switch of claim 1, wherein: the moving contact (5) is composed of two opposite contact pieces (501), and the contact mounting plate (6) is clamped between the contact pieces (501) and clamped through a C-shaped buckle (15).

3. The grounding switch of claim 2, wherein: the joints of the C-shaped buckle (15), the contact sheet (501) and the contact mounting plate (6) are connected through an insulating connecting rod (16).

4. The grounding switch of claim 1, wherein: mounting bracket (1) is formed by connecting preceding "L" shaped plate (17) and back "L" shaped plate (18), two liang of relative settings in preceding "L" shaped plate (17), first spring (7) set up two between preceding "L" shaped plate (17), the welding of back "L" shaped plate (18) both ends has "L" shape supporting legs (19), all be equipped with mounting hole (24) on preceding "L" shaped plate (17), "L" shape supporting legs (19).

5. The grounding switch of claim 2, wherein: a pull rod (20) is arranged at the upper end of each of the two contact pieces (501), and a second spring (21) is arranged between the two ends of each pull rod (20) and each contact piece (501).

6. The grounding switch of claim 1, wherein: and a brake-off indicating plate (22) is arranged on the insulating operating rod (3).

7. The grounding switch of claim 1, wherein: and shaft sleeves (23) are arranged between the operating plate (12) and the mounting rack (1) and between the operating plate and the contact mounting plate (6).

8. The grounding switch of claim 1, wherein: insulating bar (3) one side is equipped with constant head tank (25), be equipped with on shaft hole (26) of contact mounting panel (6) lower extreme with constant head tank (25) location complex location bellying (27).

9. The grounding switch of claim 1, wherein: the contact mounting plate (6) is overlapped by two pieces.

10. A high tension switchgear, includes cabinet body (28), establishes interlock (29) on the cabinet body (28), its characterized in that: the earthing switch (a) as claimed in any one of claims 1-9 is installed in the cabinet body (28), and the interlocking device (29) is connected with the insulating operating rod (3) of the earthing switch (a) through an earthing interlocking crank arm mechanism (30).