CN220121729U - Clapping rotary grounding switch - Google Patents

Abstract

The utility model relates to a clapping rotary grounding switch, which comprises a base, wherein an insulator column, a fixed contact plate and a fixed contact are arranged on the upper end surface of the base, and the fixed contact comprises a pair of side plates which are vertically arranged; the grounding switch base is connected to one side of the base, and a conductive tube and a moving contact are arranged on the grounding switch base; still be provided with the spacing unit that carries out spacingly to the moving contact on the static contact, spacing unit is including installing first spacing subassembly, the spacing subassembly of second between two curb plates, and first spacing subassembly comprises the first limiting plate of installing at two curb plate inner walls respectively, and the spacing subassembly of second comprises the second limiting plate of installing at two curb plate inner walls respectively. The utility model has the advantages that: when the movable contact is switched on, the fixed contact is firstly shot, then the fixed contact is rotationally clamped, and when the grounding switch is pushed by short-circuit electric force, the fixed contact is limited to prevent the movable contact of the grounding switch from being separated, so that the grounding switch can be prevented from being separated when bearing short-circuit current.

Description

Clapping rotary grounding switch

Technical Field

The present disclosure relates to grounding switches, and particularly to a rotary grounding switch.

Background

The grounding switch is a mechanical grounding device for releasing static charges of overhauled equipment and circuits and ensuring personal safety of overhaulers during power failure overhauling. It can withstand current for a certain period of time in abnormal situations (e.g. short circuit) but not normally through load current. Which is typically part of an isolating switch.

The conventional grounding switch adopts a one-step clapping type or a two-step type, the one-step clapping type grounding switch is only suitable for low voltage class, bears lower short-circuit current, is still unstable in lower short-circuit current test, is always burnt, and needs to be used for high voltage class or bearing the grounding switch of higher short-circuit current.

Disclosure of Invention

The utility model aims to provide a clapping rotary grounding switch which can ensure that the grounding switch cannot be separated when bearing short-circuit current.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a clapping rotary grounding switch is characterized in that: comprising

The device comprises a base, wherein an insulator column is arranged on the upper end face of the base, the top end of the insulator column is connected with a horizontally arranged static contact plate, a static contact is arranged on one side of the static contact plate, and the static contact comprises a pair of vertically arranged side plates;

the grounding switch base is connected to one side of the base, a conductive tube is arranged on the grounding switch base, the top end of the conductive tube is connected with a moving contact matched with the fixed contact, and the conductive tube is driven to swing by an operating mechanism arranged on the base;

still be provided with on the stationary contact and carry out spacing unit to the moving contact, spacing unit is including installing first spacing subassembly, the second spacing subassembly between two curb plates, first spacing subassembly comprises the first limiting plate of installing respectively at two curb plate inner walls, leave the clearance between two first limiting plates, the second spacing subassembly comprises the second limiting plate of installing respectively at two curb plate inner walls, leave the clearance that holds the moving contact to pass through between two second limiting plates, and the interval between two second limiting plates is greater than the clearance between two first limiting plates, leave the clearance that holds the moving contact to rotate between first limiting plate and the second limiting plate.

Further, a reset spring is further arranged between the conductive tube and the grounding switch base, one side of the reset spring is connected with the grounding switch base, and the other side of the reset spring is connected with the conductive tube.

The utility model has the advantages that: according to the utility model, the limit unit is designed on the fixed contact to be matched with the movable contact, the stop and the opening limit of the movable contact are realized by utilizing the first limit component and the second limit component, the fixed contact is firstly shot when the movable contact is closed, then the fixed contact is rotationally clamped, when the grounding switch is pushed by short-circuit electric force, the movable contact of the grounding switch is prevented from being separated by the limit unit on the fixed contact, and therefore, the grounding switch can be prevented from being separated when bearing short-circuit current.

To the reset spring that sets up between electrically conductive pipe and the earthing switch base, utilize reset spring to stimulate the electrically conductive pipe and rotate, realize the rotation of moving contact for the moving contact can be smooth shift out from between two second limiting plates, make things convenient for the brake separating of moving contact.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

Fig. 1 is a schematic view of a clapping rotary grounding switch of the present utility model.

Description of the embodiments

The following examples will provide those skilled in the art with a more complete understanding of the present utility model and are not intended to limit the utility model to the embodiments described.

A clapping rotary grounding switch as shown in FIG. 1 comprises

The base 1 installs insulator post 2 on the up end of base 1, is connected with the static contact board 3 that a level set up on the top of insulator post 2, and static contact board 3 is a rectangular shaped plate, and one side of static contact board 3 is fixed mutually with insulator post 2 through the cooperation of bolt, nut, still is connected with the flange that is used for fixing on the top of insulator post 2, installs the static contact at another side of static contact board 3, and the static contact includes the curb plate 3 of a pair of vertical setting, fixes between the top of curb plate 3 and the static contact board 3, leaves the clearance between two curb plates 3.

The grounding switch base 9 is connected to one side of the base 1, the grounding switch base 9 is in rolling connection with the base 1 through the matching of a rotating rod, the rotating rod is in movable connection with the base 1 through the matching of a bearing, the rotating rod is fixedly connected with the grounding switch base 9, free rotation of the grounding switch base 9 relative to the base 1 is achieved, a vertically arranged conducting tube 7 is mounted on the grounding switch base 9, the bottom end of the conducting tube 7 is connected with the grounding switch base 9, the top end of the conducting tube 7 is connected with a moving contact 10 matched with a fixed contact, the conducting tube 7 is driven to swing by an operating mechanism mounted on the base 1, and the specific structure and the working principle of the operating mechanism are all of the prior art and are not described in detail in the patent.

Still be provided with the spacing unit that carries out spacing to moving contact 10 on the static contact, spacing unit is including installing first spacing subassembly, the second spacing subassembly between two curb plates 4, first spacing subassembly comprises the first limiting plate 6 of installing respectively at two curb plate 4 inner walls, leave the clearance between two first limiting plates 6, the second spacing subassembly comprises the second limiting plate 5 of installing respectively at two curb plate 4 inner walls, leave the clearance that holds moving contact 4 to pass through between two second limiting plates 5, and the interval between two second limiting plates 5 is greater than the clearance between two first limiting plates 6, namely in the horizontal direction, the size of first limiting plate 6 is greater than the size of second limiting plate 5, leave the clearance that holds moving contact 10 to rotate between first limiting plate 6 and second limiting plate 5.

A return spring 8 is also arranged between the conductive tube 7 and the grounding switch base 9, one side of the return spring 8 is connected with the grounding switch base, and the other side of the return spring 8 is connected with the conductive tube 7. To reset spring 8 that sets up between electrically conductive pipe 7 and the earthing switch base 9, utilize reset spring 8 to stimulate electrically conductive pipe 7 and rotate, realize moving contact 10's rotation for moving contact 10 can be smooth follow and shift out between two second limiting plates 5, make things convenient for moving contact 10's brake separating.

Working principle: when the switch-on is performed, the operating mechanism drives the conducting tube 7 to act for switching on, the conducting tube 7 rotates to drive the moving contact 10 to be matched with the static contact, the moving contact 10 can touch the first limiting plate 6 along with the rotation of the conducting tube 7, the first limiting plate 6 prevents the moving contact 10 from continuously rotating backwards, the operating mechanism continuously drives the conducting tube 7 to rotate, the moving contact 10 starts to axially rotate for switching on, and at the moment, the second limiting plate 5 clamps the moving contact of the moving contact 10, so that the moving contact 10 cannot be switched off.

When the brake is opened: the operating mechanism drives the conductive tube 7 to act for opening, the movable contact 10 moves until touching the second limiting plate 5, the second limiting plate 5 prevents the movable contact 10 from moving continuously, the operating mechanism continues to drive the conductive tube 7, the movable contact 10 starts to rotate in the axial direction, and when the second limiting plate 5 cannot prevent the movable contact 10 from opening, the conductive tube 7 starts to rotate in the vertical plane for opening.

The moving contact 10 is firstly shot into the fixed contact during closing, then is rotationally clamped into the fixed contact, and when the grounding switch is pushed by short-circuit electric force, the limiting unit of the fixed contact can prevent the moving contact of the grounding switch from being separated, so that the grounding switch can be prevented from being separated when bearing short-circuit current.

Through design spacing unit on the static contact come with the moving contact cooperation, utilize first spacing subassembly and second spacing subassembly to realize the backstop to the moving contact and break brake spacing, the backstop can make the earthing switch moving contact rotate under thrust effect after contacting, break brake spacing can prevent that earthing switch from separating under electrodynamic force or external force effect from deviating from. When the mechanism drives the grounding switch to break the gate, the break gate limit can enable the movable side to conduct electricity to rotate, and therefore the static contact is separated.

It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (2)

1. The utility model provides a clap and close rotary type earthing switch which characterized in that: comprising

The device comprises a base, wherein an insulator column is arranged on the upper end face of the base, the top end of the insulator column is connected with a horizontally arranged static contact plate, a static contact is arranged on one side of the static contact plate, and the static contact comprises a pair of vertically arranged side plates;

the grounding switch base is connected to one side of the base, a conductive tube is arranged on the grounding switch base, the top end of the conductive tube is connected with a moving contact matched with the fixed contact, and the conductive tube is driven to swing by an operating mechanism arranged on the base;

still be provided with on the stationary contact and carry out spacing unit to the moving contact, spacing unit is including installing first spacing subassembly, the second spacing subassembly between two curb plates, first spacing subassembly comprises the first limiting plate of installing respectively at two curb plate inner walls, leave the clearance between two first limiting plates, the second spacing subassembly comprises the second limiting plate of installing respectively at two curb plate inner walls, leave the clearance that holds the moving contact to pass through between two second limiting plates, and the interval between two second limiting plates is greater than the clearance between two first limiting plates, leave the clearance that holds the moving contact to rotate between first limiting plate and the second limiting plate.

2. The clapping rotary grounding switch of claim 1 wherein: and a reset spring is further arranged between the conductive tube and the grounding switch base, one side of the reset spring is connected with the grounding switch base, and the other side of the reset spring is connected with the conductive tube.