CN216212996U

CN216212996U - Mechanical interlocking structure of circuit breaker

Info

Publication number: CN216212996U
Application number: CN202122298892.6U
Authority: CN
Inventors: 余有如; 翁士友
Original assignee: Hangzhou Only Power Supply Equipment Co ltd
Current assignee: Hangzhou Only Power Supply Equipment Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-04-05
Anticipated expiration: 2031-09-18

Abstract

The utility model discloses a mechanical interlocking structure of a circuit breaker, and aims to overcome the defects of complex interlocking structure, single function and poor safety of the circuit breaker. The utility model discloses an including installing the support between two adjacent circuit breakers, the rotatable link rod of shelf location, be equipped with the handle that opens and shuts that is used for controlling the circuit break-make on the circuit breaker, be equipped with fixed lockhole on the support, be equipped with the lockhole that closes entirely on the link rod, the lockhole both sides that close entirely on the link rod all are equipped with the lockhole that singly closes, the link rod both ends can be close to and carry on spacingly to the handle that opens and shuts on the handle on the circuit breaker, fixed lockhole and close entirely between the lockhole or connect the padlock between fixed lockhole and the lockhole that singly closes, the padlock is fixed a position the locking to the link rod. The mechanical interlocking structure of the circuit breaker has the advantages of simple structure, low cost, easiness in implementation, strong universality, comprehensive functions and high safety.

Description

Mechanical interlocking structure of circuit breaker

Technical Field

The utility model relates to the field of power equipment, in particular to a mechanical interlocking structure of a circuit breaker.

Background

At present, in a low-voltage power distribution system, some power supply equipment needs two associated circuit breakers which cannot be switched on simultaneously, if the multiple switches are electrically controlled to be interlocked, the stability and the reliability are poor, and therefore a mechanical interlocking device is needed to be adopted to prevent the two circuit breakers from being switched on simultaneously. The mechanical interlocking devices currently on the market have several problems: 1. the side-to-side sliding approach has certain limitations, such as many brands of miniature circuit breakers that do not use such mechanical interlocks with auxiliary or alarm contacts. 2. The structure is complex, the processing is difficult, and a mold needs to be developed or precision machining is needed. 3. The function is single, and only certain functions can be realized, for example, only one circuit breaker can be controlled to be switched on and off, and the two circuit breakers cannot be interlocked; or only the interlocking can be simply realized, and the opening and closing state of the circuit breaker cannot be controlled. 4. The safety is poor, a padlock cannot be added, the interlocking device can be locked only by using a screw fastener, and certain potential safety hazards are caused. 5. High price and low cost performance.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a mechanical interlocking structure of a circuit breaker, which has the advantages of simple structure, low cost, easiness in implementation, strong universality, comprehensive functions and high safety.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a circuit breaker mechanical interlocking structure, including installing the support between two adjacent circuit breakers, the rotatable link rod of installation on the support, be equipped with the handle that opens and shuts that is used for controlling the circuit break-make on the circuit breaker, be equipped with fixed lockhole on the support, be equipped with the lock hole that closes entirely on the link rod, it all is equipped with the lock hole that singly closes to close all to close the lockhole both sides on the link rod, the link rod both ends can be close to and carry out spacingly on the handle that opens and shuts on the circuit breaker, connect the padlock between fixed lockhole and the lock hole that closes entirely or between fixed lockhole and the lock hole that singly closes, the padlock fixes a position the locking to the link rod.

The end part of the link rod is close to the opening and closing handle on the circuit breaker, and the opening and closing handle is limited, so that the opening and closing handle cannot be opened by closing.

When the totally-closed lock hole corresponds to the fixed lock hole, the link rod is horizontal at the moment, the padlock is connected between the fixed lock hole and the totally-closed lock hole, the padlock limits the link rod to prevent the link rod from rotating, two ends of the link rod are close to the opening and closing handles on the two circuit breakers respectively at the moment, the limitation on the opening and closing handles on the two circuit breakers is realized, and the two circuit breakers cannot be closed.

When the single-closing lock hole corresponds to the fixed lock hole, the connecting rod is inclined at the moment, the padlock is connected between the fixed lock hole and the single-closing lock hole, the padlock limits the connecting rod to prevent the connecting rod from rotating any more, one end of the connecting rod is close to the opening and closing handle on one circuit breaker at the moment, the other end of the connecting rod is far away from the opening and closing handle on the other circuit breaker, the circuit breaker with the opening and closing handle close to the connecting rod cannot be closed, the circuit breaker with the opening and closing handle far away from the connecting rod can be closed, and closing of a single circuit breaker is achieved.

The padlock limits the linkage rod, and the linkage rod can be opened only by using a key, so that the safety of workers and equipment is ensured. The mechanical interlocking structure of the circuit breaker has the advantages of simple structure, low cost, easiness in implementation, strong universality, comprehensive functions and high safety.

Preferably, both ends of the link are bent to form the stopper portion. The limiting area is increased by the limiting part, and the limiting strength is improved.

Preferably, the bracket comprises a connecting part and two supporting parts, the two supporting parts are arranged at two ends of the connecting part to form a U-shaped structure, the link rod is arranged on the connecting part, and the fixing lock hole is arranged on the connecting part. The support has simple structure and reliable connection.

Preferably, the edge of the supporting part is bent to form a connecting flange; the lower edge of the connecting part extends downwards to form a bulge, and the fixing lock hole is arranged on the bulge. The connecting flange facilitates the installation and fixation of the bracket. The protrusions facilitate the attachment of the padlock.

Preferably, the front panel is installed on the front side of the circuit breaker, the opening and closing handle on the circuit breaker is exposed out of the front panel, and the bracket is installed on the front panel.

In another scheme, an adapter plate is arranged between two adjacent circuit breakers, and a support is arranged on the adapter plate.

Preferably, the middle part of the link rod is provided with a locking part, and the full-closed lock hole and the single-closed lock hole are both arranged on the locking part. The arrangement of the locking part ensures that a sufficient space is reserved at the connecting position of the link rod and the padlock, and simultaneously, the structural strength of the position is improved.

Preferably, a rotating shaft is connected between the link and the bracket, and the link is rotatably connected with the bracket through the rotating shaft. The rotating shaft facilitates the rotating connection of the link rod and the bracket.

Preferably, the distance from the axis of the fixed lock hole to the axis of the rotating shaft, the distance from the axis of the full lock hole to the axis of the rotating shaft and the distance from the axis of the single lock hole to the axis of the rotating shaft are equal. The structure ensures that the full-closed lock hole and the single-closed lock hole can be aligned with the fixed lock hole, so that the padlock can be conveniently connected.

Preferably, the bracket and the link rod are both sheet metal parts. The sheet metal part is simple to process, low in cost and easy to realize.

Compared with the prior art, the utility model has the beneficial effects that: the mechanical interlocking structure of the circuit breaker has the advantages of simple structure, low cost, easiness in implementation, strong universality, comprehensive functions and high safety.

Drawings

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

FIG. 2 is an exploded view of example 1 of the present invention;

fig. 3 is a schematic structural view of a molded case circuit breaker according to embodiment 1 of the present invention;

FIG. 4 is a schematic structural view of embodiment 2 of the present invention;

fig. 5 is a schematic structural view of a molded case circuit breaker according to embodiment 2 of the present invention;

FIG. 6 is a schematic illustration of the link level of the present invention;

FIG. 7 is a schematic view of the present invention after the clockwise rotation of the linkage;

FIG. 8 is a schematic view of the present invention after the link has been rotated counterclockwise;

in the figure: 1. the circuit breaker comprises a circuit breaker body, 2, a support, 3, a link rod, 4, an opening and closing handle, 5, a fixing lock hole, 6, a full-closing lock hole, 7, a single-closing lock hole, 8, a padlock, 9, a limiting part, 10, a connecting part, 11, a supporting part, 12, a protrusion, 13, a front panel, 14, a mounting plate, 15, a sliding rail, 16, a locking part, 17, a rotating shaft, 18, a transfer plate, 19 and a connecting flanging.

Detailed Description

The technical scheme of the utility model is further described in detail by the following specific embodiments in combination with the attached drawings:

example 1: a mechanical interlocking structure of circuit breakers (see attached figures 1 to 3 and 6 to 8) comprises a support 2 installed between two adjacent circuit breakers 1, wherein a rotatable connecting rod 3 is installed on the support, an opening and closing handle 4 used for controlling the on-off of a circuit is arranged on each circuit breaker, a fixing locking hole 5 is formed in the support, a totally closing locking hole 6 is formed in each connecting rod, single-closing locking holes 7 are formed in two sides of each totally closing locking hole in each connecting rod, two ends of each connecting rod can be limited by the opening and closing handles on the circuit breakers in a position close mode, a padlock 8 is connected between each fixing locking hole and the corresponding totally closing locking hole or between each fixing locking hole and the corresponding single-closing locking hole, and the linking rods are positioned and locked by the padlock. The bracket and the link rod are sheet metal parts.

Both ends of the link rod are bent to form a limiting part 9. The support comprises a connecting part 10 and two supporting parts 11, wherein the two supporting parts are arranged at two ends of the connecting part to form a U-shaped structure, the link rods are arranged on the connecting part, and the fixed lock holes are arranged on the connecting part. The edge of the supporting part is bent to form a connecting flange 19; the lower edge of the connecting part extends downwards to form a bulge 12, and the fixing lock hole is arranged on the bulge.

The front panel 13 is arranged on the front side of the circuit breaker, the opening and closing handle on the circuit breaker is exposed out of the front panel, and the bracket is arranged on the front panel. The circuit breaker is installed on mounting panel 14, is equipped with slide rail 15 on the mounting panel, and the circuit breaker can slide on the slide rail. The front part of the breaker is exposed out of the front panel. The connecting flange is fixedly connected on the front panel through a screw.

The middle part of the link rod is provided with a locking part 16, and the full-closed lock hole and the single-closed lock hole are both arranged on the locking part. A rotating shaft 17 is connected between the connecting rod and the bracket, and the connecting rod is rotatably connected with the bracket through the rotating shaft. The rotating shaft can adopt rivets, screws, pins and the like. The distance from the axis of the fixed lock hole to the axis of the rotating shaft, the distance from the axis of the totally-closed lock hole to the axis of the rotating shaft and the distance from the axis of the singly-closed lock hole to the axis of the rotating shaft are equal. The circuit breaker mechanical interlock structure can also be used for a molded case circuit breaker, as shown in fig. 3.

Example 2: a mechanical interlocking structure of circuit breakers (see figures 4 to 8) is similar to that of embodiment 1, and mainly differs from the embodiment in that an adapter plate 18 is installed between two adjacent circuit breakers, and a bracket is installed on the adapter plate. The adapter plate is fixedly connected with the mounting plate. The circuit breaker mechanical interlock structure can also be used for a molded case circuit breaker, as shown in fig. 5. The other structure is the same as embodiment 1.

The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the utility model as set forth in the appended claims.

Claims

1. The utility model provides a circuit breaker mechanical interlocking structure, characterized by, including installing the support between two adjacent circuit breakers, the rotatable link rod of installation on the support, be equipped with the handle that opens and shuts that is used for controlling the circuit break-make on the circuit breaker, be equipped with fixed lockhole on the support, be equipped with the lockhole that closes entirely on the link rod, it all is equipped with the lockhole that singly closes to close all to the lockhole both sides on the link rod, the link rod both ends can be close to and carry out spacing to the handle that opens and shuts on the handle on the circuit breaker, connect the padlock between fixed lockhole and the lockhole that closes entirely or between fixed lockhole and the lockhole that singly closes, the padlock fixes a position the locking to the link rod.

2. The mechanical interlocking structure of the circuit breaker as claimed in claim 1, wherein both ends of the link rod are bent to form a limiting portion.

3. The mechanical interlocking structure of the circuit breaker as claimed in claim 1, wherein the bracket comprises a connecting portion, two supporting portions disposed at both ends of the connecting portion to form a U-shaped structure, the link rod is mounted on the connecting portion, and the fixing locking hole is disposed on the connecting portion.

4. The mechanical interlocking structure of the circuit breaker as claimed in claim 3, wherein the edge of the supporting portion is bent to form a connecting flange; the lower edge of the connecting part extends downwards to form a bulge, and the fixing lock hole is arranged on the bulge.

5. The mechanical interlocking structure of the circuit breaker as claimed in claim 1, wherein the front panel is installed on the front side of the circuit breaker, the opening and closing handle of the circuit breaker is exposed out of the front panel, and the bracket is installed on the front panel.

6. The mechanical interlocking structure of the circuit breakers as claimed in claim 1, wherein an adapter plate is installed between two adjacent circuit breakers, and the support is installed on the adapter plate.

7. The mechanical interlocking structure of the circuit breaker as claimed in any one of claims 1 to 6, wherein a locking portion is provided in the middle of the link rod, and the full-close locking hole and the single-close locking hole are both provided in the locking portion.

8. The mechanical interlocking structure of the circuit breaker as claimed in any one of claims 1 to 6, wherein a rotating shaft is connected between the link and the frame, and the link is rotatably connected with the frame through the rotating shaft.

9. The mechanical interlocking structure of the circuit breaker as claimed in claim 8, wherein the distance from the axis of the fixed lock hole to the axis of the rotating shaft, the distance from the axis of the full lock hole to the axis of the rotating shaft, and the distance from the axis of the single lock hole to the axis of the rotating shaft are all equal.

10. The mechanical interlocking structure of the circuit breaker as claimed in claim 1, wherein the bracket and the link are sheet metal parts.