CN214336623U

CN214336623U - Earthing switch limiting device

Info

Publication number: CN214336623U
Application number: CN202022644281.8U
Authority: CN
Inventors: 姜振宁; 许恒甲; 徐霞; 上官芬芳; 吴耀文; 谢永健
Original assignee: Jiangsu Huaguan Electrical Equipment Group Co ltd
Current assignee: Jiangsu Huaguan Electrical Equipment Group Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-10-01
Anticipated expiration: 2030-11-16

Abstract

The utility model relates to a stop device field especially relates to earthing switch stop device. The device comprises a stop block assembly and an interlocking assembly; the interlocking assembly comprises a rear door interlocking rod and a rear door interlocking shaft which are arranged on the rear door, a groove is arranged on the lower side surface of the rear end of the rear door interlocking rod, and a clamping tongue matched with the groove for use is arranged at the front end of the rear door interlocking shaft; simple structure, flexible operation, high factor of safety medium voltage switchgear earthing switch and back door interlocking device.

Description

Earthing switch limiting device

Technical Field

The utility model relates to a stop device field especially relates to earthing switch stop device.

Background

The medium voltage switchgear is mainly used for control and protection of an electric power system, is very important power transmission and distribution equipment, and is continuously developed towards high reliability, high safety and the like. For medium-voltage complete equipment, a grounding switch must be arranged in the medium-voltage complete equipment, the grounding switch is used for switching on to enable a cabinet body to be grounded during maintenance, so that the personal safety of maintenance personnel is guaranteed, in order to guarantee the personal safety of the maintenance personnel more reliably, an interlocking mechanism is generally arranged in the medium-voltage complete equipment in the prior art, a back door interlock adopted by domestic main medium-voltage complete equipment at present is of an old KYN-28 structure, and the existing interlocking mechanism mainly has the defects of inflexible operation, easy breakage of a back interlocking hook and the like, so that the personal safety of the maintenance personnel is difficult to guarantee by the existing interlocking mechanism.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing.

The technical scheme of the utility model as follows:

the earthing switch limiting device comprises a stop block assembly and an interlocking assembly; the interlocking assembly comprises a rear door interlocking rod and a rear door interlocking shaft which are arranged on a rear door, a groove is formed in the lower side surface of the rear end of the rear door interlocking rod, and a clamping tongue matched with the groove for use is arranged at the front end of the rear door interlocking shaft.

The stop block assembly comprises a mounting bracket arranged on the side plate of the cabinet, and a movable positioning pin is arranged in the mounting bracket.

And a return spring is sleeved on the positioning pin in the mounting bracket.

And a stop block is sleeved on the locating pin at one end of the reset spring.

And the exposed end of the positioning pin extending out of the mounting bracket is also sleeved with a nut.

The mounting bracket comprises a hollow cavity, and baffle rings are arranged at the openings at the two ends of the cavity.

And the centers of the baffle rings are provided with jacks for inserting the positioning pins.

The utility model has the advantages that: the utility model discloses a medium voltage switchgear earthing switch and back door interlocking device that simple structure, flexible operation, factor of safety are high.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

Wherein: FIG. 1 is a schematic structural view of the present invention;

in the attached drawing, 1 is a back door interlocking rod, 2 is a mounting bracket, 3 is a positioning pin, 4 is a return spring, 5 is a stop, 6 is a nut, 7 is a back door interlocking shaft, 8 is a groove, and 9 is a clamping tongue.

Detailed Description

Referring to fig. 1, the earthing switch limiting device comprises a stop block assembly and an interlocking assembly; the interlocking assembly comprises a rear door interlocking rod 1 and a rear door interlocking shaft 7 which are installed on a rear door, a groove 8 is formed in the lower side face of the rear end of the rear door interlocking rod, and a clamping tongue 9 matched with the groove for use is arranged at the front end of the rear door interlocking shaft. The back door interlocking shaft is provided with the clamping tongue, and the groove of the back door interlocking rod is fixed, so that the back interlocking shaft is rotated to drive the clamping tongue to rotate, and the clamping tongue is clamped into the groove.

The stop block assembly comprises a mounting bracket 2 arranged on the side plate of the cabinet, and a movable positioning pin 3 is arranged in the mounting bracket. The positioning pin is installed by arranging the installation bracket; by moving the positioning pin to oppositely move the back door

And a return spring 4 is sleeved on the positioning pin in the mounting bracket. The reset spring is arranged to facilitate the reset of the positioning pin.

And a stop block 5 is further sleeved on the locating pin at one end of the return spring. The stop block is matched with the spring, so that the reset spring can reset the moved positioning pin quickly.

And the exposed end of the positioning pin extending out of the mounting bracket is also sleeved with a nut 6. The limit of the positioning pin is realized through the matching of the nut and the mounting bracket.

The mounting bracket comprises a hollow cavity, and baffle rings are arranged at the openings at the two ends of the cavity. The stop ring is arranged to support and limit the return spring.

And the centers of the baffle rings are provided with jacks for inserting the positioning pins. The insertion installation of the positioning pin is facilitated by the arrangement of the insertion hole.

The following working principle is described:

the rear door interlocking lever 1 is mounted on the rear door, then the door switch is moved together, the stopper mounting bracket 2 is mounted on the cabinet side plate by a rivet, then the return spring 4 and the stopper 5 are penetrated, the positioning pin 3 is mounted on the stopper 5 so that the spring 4 is on the right of the positioning pin 3 as shown in fig. 1 when viewed from the left of the cabinet, and then the nut 6 is mounted on the stopper 5.

When the back door is closed, as shown in fig. 1, the back door interlocking rod 1 pushes against the stop block 5 to move towards the right side, then the grounding switch is opened, the convex block on the back door interlocking shaft 7 is clamped into the groove on the back door interlocking rod 1 along with the rotation of the bevel gear, and at the moment, the back door cannot be opened. The grounding switch is switched on, the convex block on the rear door interlocking shaft 7 is moved away from the groove on the rear door interlocking rod 1 along with the rotation of the bevel gear, and then the stop block 5 moves leftwards under the action of the spring to jack the rear door open.

When the rear door is opened, the return spring 4 naturally extends, and the stop block 5 blocks the convex block on the rear door interlocking shaft 7 at the moment, so that the grounding switch cannot be opened.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.

Claims

1. The earthing switch limiting device is characterized by comprising a stop block assembly and an interlocking assembly; the interlocking assembly comprises a rear door interlocking rod and a rear door interlocking shaft which are arranged on a rear door, a groove is formed in the lower side surface of the rear end of the rear door interlocking rod, and a clamping tongue matched with the groove for use is arranged at the front end of the rear door interlocking shaft.

2. The earthing switch spacing device of claim 1, wherein the stop assembly comprises a mounting bracket disposed on the cabinet side panel, a movable locating pin disposed within the mounting bracket.

3. The earthing switch limiting device according to claim 2, characterized in that a return spring is sleeved on the locating pin in the mounting bracket.

4. The earthing switch limiting device according to claim 3, characterized in that a stopper is further sleeved on the positioning pin at one end of the return spring.

5. The earthing switch limiting device according to claim 2, wherein the exposed end of the positioning pin extending out of the mounting bracket is further sleeved with a nut.

6. The earthing switch limiting device according to claim 2, wherein the mounting bracket comprises a hollow cavity, and the opening at both ends of the cavity is provided with a baffle ring.

7. The earthing switch limiting device according to claim 6, wherein the retainer rings are each provided at the center thereof with a socket into which a positioning pin is inserted.