CN218101142U

CN218101142U - Reclosing mechanism of circuit breaker

Info

Publication number: CN218101142U
Application number: CN202220938694.3U
Authority: CN
Inventors: 王惠波; 于成涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-12-20
Anticipated expiration: 2032-04-22

Abstract

The utility model relates to a reclosing mechanism of circuit breaker, it includes: the circuit breaker comprises a guide rail assembly arranged on a circuit breaker operation panel, a sliding block arranged on the guide rail assembly in a sliding manner, a crank driving assembly arranged on the circuit breaker operation panel and a stop block assembly arranged on the sliding block; a horizontal long hole is formed in the sliding block corresponding to a crank of the crank driving assembly, and the crank is arranged in the long hole in a sliding mode; a handle falling groove in the vertical direction is formed in the sliding block corresponding to an operating handle on an operating panel of the circuit breaker; the stop block assembly comprises a stop block horizontally arranged on the sliding block in a sliding mode, the stop block is driven by the crank to slide into the handle falling groove and used for lifting the operating handle, and one end, far away from the handle falling groove, of the stop block is arranged on the sliding block through a tension spring.

Description

Reclosing mechanism of circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field specifically is a coincidence floodgate mechanism of circuit breaker.

Background

A circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition, and capable of closing, carrying, and opening/closing a current under an abnormal circuit condition (including a short circuit condition) within a predetermined time, and generally includes a contact system, an arc extinguishing system, an operating mechanism, a trip, a case, and the like. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, has the function equivalent to the combination of a fuse type switch, an over-under-heat relay and the like, and generally does not need to change parts after breaking fault current.

The operating mechanism for realizing switching on and switching off of the low-voltage circuit breaker is generally divided into a manual operating mechanism and an electric operating mechanism, and in the field of remote control of the low-voltage circuit breaker, the low-voltage circuit breaker is generally automatically switched on and switched off by the electric operating mechanism, so that the protection of a power supply circuit and a motor is realized.

However, when the circuit breaker breaks the circuit, the control handle of the operating mechanism automatically falls, and the control handle needs to drive the sliding block to fall together, so that the normal protection function of the circuit breaker can be influenced once the sliding block cannot fall normally.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a reclosing lock that can realize the circuit breaker automatically is provided, can not influence the reclosing lock mechanism of the circuit breaker of the normal whereabouts of brake lever after closing a floodgate.

In order to solve the above problems, the utility model adopts the following technical proposal:

a reclosing mechanism of a circuit breaker, comprising: the device comprises a guide rail assembly arranged on a circuit breaker operation panel, a sliding block arranged on the guide rail assembly in a sliding manner, a crank drive assembly arranged on the circuit breaker operation panel and a stop block assembly arranged on the sliding block;

a horizontal long hole is formed in the sliding block corresponding to a crank of the crank driving assembly, and the crank is arranged in the long hole in a sliding mode;

a handle falling groove in the vertical direction is formed in the sliding block corresponding to an operating handle on an operating panel of the circuit breaker;

the stop block assembly comprises a stop block which is horizontally arranged on the sliding block in a sliding mode, the stop block is driven by the crank to slide to the handle falling groove to lift the operating handle, and one end, far away from the handle falling groove, of the stop block is arranged on the sliding block through a tension spring.

As a preferred embodiment, a notch gear is fixedly arranged on the crank, a stop block rack is arranged on the stop block, and the notch gear and the stop block rack can be meshed;

the crank slides in the long hole to enable the notch gear to rotate relative to the sliding block so as to enable the stop block to slide;

the notch gear is meshed with the stop block rack and used for preventing the stop block from being pulled by the tension spring.

In a preferred embodiment, the stop block assembly further comprises a receiving guide rail and a sliding guide rail arranged on the sliding block;

the receiving guide rail and the sliding guide rail are respectively positioned on the left side and the right side of the handle falling groove, the sliding guide rail is arranged below the elongated hole, and stopper accommodating cavities are oppositely arranged in the receiving guide rail and the sliding guide rail and used for the stoppers to slide.

In a preferred embodiment, a rack sliding groove is formed in the upper end surface of the sliding guide rail corresponding to the stopper rack, and the stopper rack passes through the rack sliding groove and then is engaged with the notch gear.

As a preferred embodiment, one end of the sliding guide rail, which is far away from the handle falling groove, is provided with a tension spring mounting plate;

the extension spring sets up dog holding intracavity, its both ends respectively with the extension spring mounting panel with the dog is connected.

In a preferred embodiment, the guide rail assembly includes two guide post mounting seats which are oppositely arranged and two guide posts which are symmetrically arranged between the two guide post mounting seats;

the two guide post installation seats are arranged on the upper side and the lower side of the operating handle, and the two guide posts are located on the left side and the right side of the operating handle.

As a preferred embodiment, two ends of the sliding block are symmetrically provided with two lugs corresponding to the guide posts, and the two lugs are provided with through guide holes.

As a preferred embodiment, the crank driving assembly includes a driving motor disposed in a housing of the circuit breaker, a reduction box, and a disk-shaped crank mounting seat disposed on an output shaft of the reduction box, the crank is disposed on the crank mounting seat, and the driving motor drives the crank mounting seat to rotate so that the crank performs a circular motion with the output shaft of the reduction box as an axis.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

the utility model discloses a be provided with slider, the horizontal slip setting dog on the slider of handle falling groove and through notched gear and dog meshed crank, realized when the rotatory slider that drives of crank circumference reciprocates, it lifts up operating handle to slide in the handle falling groove for the dog, or when operating handle by the lifting back slider that targets in place under the drive of extension spring make operating handle can not have the interference fall. The design enables the operating handle to smoothly fall down when the circuit is cut off, and the operating handle can be automatically lifted through the crank driving assembly.

Drawings

Fig. 1 is a schematic view of the stopper of the embodiment when it starts to slide.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a schematic structural view of the stopper of the embodiment abutting against the operating handle which is dropped.

Fig. 4 is a schematic structural view of the stopper of the embodiment lifting the operating handle in place.

Fig. 5 is a schematic structural view of the stopper return of the embodiment.

Wherein: 100. a circuit breaker operating panel; 200. an operating handle; 1. a guide rail assembly; 1-1 guide post mounting base; 1-2 guide posts; 2. a slider; 2-1 lugs; 2-2 long holes; 2-3 receiving the guide rail; 2-4 sliding guide rails; 2-41 tension spring mounting plates; 2-5 rack sliding grooves; 2-6 handle drop grooves; 3. a crank mounting base; 3-1 crank; 3-2 notched gears; 4. a stopper; 4-1 stop block rack; 5. a tension spring; 6. the dog holding chamber.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following description of the present invention with reference to specific embodiments is given for clarity and completeness.

A reclosing mechanism of circuit breaker as shown in fig. 1 to 5, characterized in that it comprises: the circuit breaker operating panel comprises a guide rail assembly 1 arranged on the circuit breaker operating panel 100, a sliding block 2 arranged on the guide rail assembly 1 in a sliding mode, a crank driving assembly arranged on the circuit breaker operating panel 100 and a stop block assembly arranged on the sliding block 2. The crank driving component comprises a driving motor, a reduction gearbox and a disc-shaped crank mounting seat 3, wherein the driving motor is arranged in a breaker shell, the disc-shaped crank mounting seat 3 is arranged on an output shaft of the reduction gearbox, the crank 3-1 is arranged on the crank mounting seat 3, and the driving motor drives the crank mounting seat 3 to rotate so that the crank 3-1 can make circular motion with the output shaft of the reduction gearbox as an axis.

As shown in fig. 1 to 5, the guide rail assembly includes two guide post mounting seats 1-1 disposed opposite to each other and two guide posts 1-2 symmetrically disposed between the two guide post mounting seats 1-1. The two guide post mounting seats 1-1 are arranged on the upper side and the lower side of the operating handle 200, and the two guide posts 1-2 are positioned on the left side and the right side of the operating handle 200. Two ends of the sliding block 2 are symmetrically provided with two lugs 2-1 corresponding to the guide posts 1-2, and the two lugs 2-1 are provided with through guide holes.

As shown in fig. 1, a vertical handle drop groove 2-6 is formed on the slider 2 corresponding to the operating handle 200 on the circuit breaker operating panel 100, the handle drop groove 2-6 is n-shaped as a whole, and the horizontal portion of the handle drop groove can abut against the operating handle 200 to automatically drive the operating handle 200 to drop and disconnect.

The stop block assembly as shown in fig. 1 comprises a stop block 4 horizontally slidably arranged on the sliding block 2, the stop block 4 slides into the handle falling groove 2-6 under the driving of the crank 3-1 for lifting the operating handle 200, and one end of the stop block 4 far away from the handle falling groove 2-6 is arranged on the sliding block 2 through a tension spring 5. In this embodiment, the crank 3-1 is fixedly provided with a notch gear 3-2, the stopper 4 is provided with a stopper rack 4-1, and the notch gear 3-2 and the stopper rack 4-1 can be meshed. The crank 3-1 slides in the elongated hole 2-2 to enable the notch gear 3-2 to rotate relative to the sliding block 2 so as to enable the stop block 4 to slide. Detailed description of the drawings fig. 1 and 2 when the notch gear 3-2 is rotated to the engaged state with respect to the slider 2 (stopper rack 4-1) by the crank 3-1, the stopper 4 is horizontally slid by the notch gear 3-2 (there is both the relative horizontal sliding of the engaging structure provided by the notch gear 3-2 and the sliding caused by the leftward pushing force provided by the notch gear 3-2).

The notch gear 3-2 is meshed with the stop block rack 4-1 to prevent the stop block 4 from being pulled by the tension spring 5, as shown in detail in fig. 5, when the crank 3-1 drives the gear 3-2 to move to the position of fig. 5, the notch gear 3-2 is driven away from the stop block rack 4-1, so that the stop block rack 4-1 is out of the limit in the horizontal direction and then resets under the drive of the tension spring 5, and at the moment, the lower part of the operating handle 200 can freely fall without a stop (when a circuit is cut off). The design enables the circuit breaker to timely play a role of protecting a circuit when a permanent fault occurs in a line.

Referring to fig. 1 and 2, the stopper assembly further includes receiving rails 2-3 and sliding rails 2-4 provided on the slider 2. The carrying guide rails 2-3 and the sliding guide rails 2-4 are respectively positioned at the left side and the right side of the handle falling groove 2-6, the sliding guide rails 2-4 are arranged below the strip holes 2-2, and the inside of the carrying guide rails 2-3 and the inside of the sliding guide rails 2-4 are relatively provided with a stopper accommodating cavity 6 for the stopper 4 to slide. The upper end face of the sliding guide rail 2-4 is provided with a rack sliding groove 2-5 corresponding to the stop block rack 4-1, and the stop block rack 4-1 is meshed with the notch gear 3-2 after passing through the rack sliding groove 2-5. And one end of the sliding guide rail 2-4, which is far away from the handle falling groove 2-6, is provided with a tension spring mounting plate 2-41. The tension spring 5 is arranged in the stopper accommodating cavity 6, and two ends of the tension spring are respectively connected with the tension spring mounting plates 2-41 and the stopper 4.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may still modify the technical solutions described in the foregoing embodiments, or may substitute some technical features of the foregoing embodiments; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. A reclosing mechanism of circuit breaker, its characterized in that, it includes: the circuit breaker comprises a guide rail assembly arranged on a circuit breaker operation panel, a sliding block arranged on the guide rail assembly in a sliding manner, a crank driving assembly arranged on the circuit breaker operation panel and a stop block assembly arranged on the sliding block;

2. The reclosing mechanism of circuit breaker according to claim 1, wherein a notch gear is fixed on the crank, a stop rack is arranged on the stop, and the notch gear and the stop rack can be meshed;

the notch gear is meshed with the stop block rack and is used for preventing the stop block from being pulled by the tension spring.

3. The reclosing mechanism of a circuit breaker according to claim 2,

the stop block assembly also comprises a bearing guide rail and a sliding guide rail which are arranged on the sliding block;

4. The reclosing mechanism of a circuit breaker according to claim 3, wherein a rack sliding groove is formed on the upper end surface of the sliding guide rail corresponding to the stopper rack, and the stopper rack is engaged with the notch gear after passing through the rack sliding groove.

5. The reclosure mechanism of the circuit breaker according to claim 3, wherein a tension spring mounting plate is arranged at one end of the sliding guide rail away from the handle drop groove;

6. The reclosure mechanism of the circuit breaker according to claim 1, wherein the guide rail assembly comprises two guide post installation seats oppositely arranged and two guide posts symmetrically arranged between the two guide post installation seats;

the two guide post installation seats are arranged on the upper side and the lower side of the operating handle, and the two guide posts are positioned on the left side and the right side of the operating handle.

7. The reclosing mechanism of circuit breaker according to claim 6, wherein two ends of the slider are symmetrically provided with two lugs corresponding to the guide posts, and the two lugs are provided with through guide holes.

8. The reclosing mechanism of a circuit breaker according to claim 1, wherein the crank drive assembly comprises a drive motor disposed in a housing of the circuit breaker, a reduction gearbox and a disk-shaped crank mounting seat disposed on an output shaft of the reduction gearbox, the crank is disposed on the crank mounting seat, and the drive motor drives the crank mounting seat to rotate so that the crank performs a circular motion with the output shaft of the reduction gearbox as an axis.