CN215527665U

CN215527665U - Auxiliary contact system of universal circuit breaker

Info

Publication number: CN215527665U
Application number: CN202121539088.6U
Authority: CN
Inventors: 陈咸; 李冰燕; 魏春阳
Original assignee: Westinghouse Switchgear Jiangsu Co ltd
Current assignee: Westinghouse Switchgear Jiangsu Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-01-14
Anticipated expiration: 2031-07-07

Abstract

The utility model discloses an auxiliary contact system of a universal circuit breaker, which comprises an auxiliary contact group, a tension spring and a main shaft, wherein the main shaft is provided with a third connecting rod, and the third connecting rod is connected with the auxiliary contact group through the tension spring; the utility model discloses a device for connecting a plurality of terminals of a vehicle, including supplementary contact group, U type support, hexagonal stick, first connecting rod and second connecting rod, the supplementary contact group is including the ascending U type support of opening, equidistant a plurality of groups micro-gap switch that is provided with in the U type support, and in the U type support, the below that is located a plurality of groups micro-gap switch rotates and is provided with the hexagonal stick, install first connecting rod and second connecting rod on the hexagonal stick, the through-hole that the installation extension spring was used is seted up to the other end of first connecting rod, the other end of second connecting rod is close to the micro-gap switch setting, is used for switching micro-gap switch's state. The conventional circuit breaker has the advantages of small number of auxiliary contact system parts and low production and manufacturing cost; the structure is simple, the assembly is convenient, and the use is convenient; and the auxiliary contact group can be assembled into a modular structure, so that the installation and transportation are convenient, and the installation time is greatly shortened.

Description

Auxiliary contact system of universal circuit breaker

Technical Field

The utility model belongs to the technical field of circuit breakers, and particularly relates to an auxiliary contact system of a universal breaker.

Background

The universal circuit breaker is an important control element in a power system and mainly plays a role in protecting overload, short circuit and the like. And the interior of the universal circuit breaker is usually provided with a plurality of groups of auxiliary switches, and the auxiliary switches are linked with a main shaft of an operating mechanism of the universal circuit breaker and provide signals for opening and closing the circuit breaker by changing the on-off state of the auxiliary switches.

The traditional auxiliary contact system is complex in structure and multiple in parts, so that the production cost is high, the installation process is complex, and a large amount of manpower and material resources are consumed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an auxiliary contact system of a universal circuit breaker, which aims to solve the problems of high production cost, complex installation process and large consumption of manpower and material resources caused by complex structure and more parts of the auxiliary contact system in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an auxiliary contact system of a universal circuit breaker comprises an auxiliary contact group, a tension spring and a main shaft, wherein a third connecting rod is arranged on the main shaft and is connected with the auxiliary contact group through the tension spring;

the auxiliary contact group comprises a U-shaped support with an upward opening, a plurality of groups of micro switches are arranged in the U-shaped support at equal intervals, a hexagonal rod is rotatably arranged in the U-shaped support and below the plurality of groups of micro switches, a first connecting rod and a second connecting rod are mounted on the hexagonal rod, a through hole for mounting a tension spring is formed in the other end of the first connecting rod, and the other end of the second connecting rod is arranged close to the micro switches and used for switching the states of the micro switches;

and a return spring for controlling the reset of the microswitch is also arranged in the U-shaped bracket.

Preferably, the hexagonal rods are installed in the centers of rotation provided on the left and right sides of the U-shaped bracket.

Preferably, the reset spring is installed at one end of the hexagonal rod and comprises two support legs, one support leg of the reset spring is connected with the second connecting rod, and the other support leg of the reset spring is connected with the U-shaped horizontal plane of the U-shaped support.

Preferably, an insulating part is arranged between two adjacent microswitches in the U-shaped bracket.

Preferably, the auxiliary contact group comprises a U-shaped support, a second connecting rod, a microswitch, a hexagonal rod, a first connecting rod, an insulating part and a return spring which are assembled into an integral module.

Preferably, a limiting shaft for limiting is arranged on the third connecting rod.

Preferably, a through hole for installing a tension spring is formed in the third connecting rod.

Compared with the prior art, the utility model has the advantages and benefits that:

the auxiliary contact system has the advantages of less parts and low production and manufacturing cost; the structure is simple, the assembly is convenient, and the use is convenient; and the auxiliary contact group can be assembled into a modular structure, so that the installation and transportation are convenient, and the installation time is greatly shortened.

Drawings

FIG. 1 is a schematic structural diagram of a switching-on state of the circuit breaker with an overall structure according to the present invention;

FIG. 2 is a structural diagram of the rotation angle state of the closing of the circuit breaker with the overall structure according to the present invention;

FIG. 3 is a schematic structural diagram of the switching-off state of the present invention;

FIG. 4 is a schematic structural view of the present invention with one side of the bracket removed in the open state.

In the figure: 1. an auxiliary contact group; 11. a U-shaped bracket; 12. a second link; 13. a microswitch; 14. a hexagonal rod; 15. a first link; 16. an insulating member; 17. a return spring; 2. a tension spring; 3. a main shaft; 31. a third link; 4. and a limiting shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-4, the present invention provides a technical solution: an auxiliary contact system of a universal circuit breaker comprises an auxiliary contact group 1, a tension spring 2 and a main shaft 3, wherein the main shaft 3 is positioned below the auxiliary contact group 1, a third connecting rod 31 is arranged on the main shaft 3, the main shaft 3 is rigidly connected with the third connecting rod 31 or adopts other fixed connection modes, and the third connecting rod 31 is connected with the auxiliary contact group 1 through the tension spring 2;

the auxiliary contact group 1 comprises a U-shaped support 11 with an upward opening, a plurality of groups of micro switches 13 are arranged in the U-shaped support 11 at equal intervals, hexagonal rods 14 are rotatably arranged in the U-shaped support 11 and below the groups of micro switches 13, a first connecting rod 15 and a second connecting rod 12 are mounted on the hexagonal rods 14, the first connecting rod 15 is rigidly connected to the hexagonal rods 14 or can be fixedly connected in other manners, hexagonal holes are formed in bent edges of the left side and the right side of the second connecting rod 12 and penetrate through the hexagonal rods 14 to form rigid connection, a through hole for mounting the tension spring 2 is formed in the other end of the first connecting rod 15, and the other end of the second connecting rod 12 is arranged close to the micro switches 13 and used for switching the state of the micro switches 13;

a return spring 17 for controlling the reset of the microswitch 13 is also arranged in the U-shaped bracket 11, so that the number of parts of the auxiliary contact system is small, and the production and manufacturing cost is low; the structure is simple, the assembly is convenient, and the use is convenient; and the auxiliary contact group 1 can be assembled into a modular structure, so that the installation and transportation are convenient, and the installation time is greatly shortened.

Further, the hexagonal rods 14 are installed in the centers of rotation provided on the left and right side surfaces of the U-shaped bracket 11, so that the rotation thereof is more stable, and the state switching of the micro switch 13 is more stable.

Further, a return spring 17 is installed at one end of the hexagonal rod 14, the return spring 17 comprises two support legs, one support leg of the return spring 17 is connected with the second connecting rod 12, and the other support leg of the return spring 17 is connected with the U-shaped horizontal plane of the U-shaped support 11, so that the reset of the microswitch 13 after state switching is facilitated.

Further, an insulating part 16 for bearing and supporting the microswitch 13 is arranged in the U-shaped support 11, and the insulating part 16 plays a certain role in insulation and support, so that the safety and the stability of the device are improved.

Further, supplementary contact group 1 includes that U type support 11, second connecting rod 12, micro-gap switch 13, hexagonal stick 14, first connecting rod 15, insulating part 16 and reset spring 17 assemble into whole module, the transportation and the installation in the later stage of being convenient for, labour saving and time saving.

Further, a limit shaft 4 for limiting is provided on the third link 31.

Further, a through hole for installing the tension spring 2 is formed in the third link 31.

The working principle is as follows: for the auxiliary contact system of the universal circuit breaker, when the circuit breaker is switched on, the spindle 3 rotates anticlockwise to drive the third connecting rod 31 in rigid connection to move in the same direction, at the moment, the tension spring 2 is stretched to drive the hexagonal rod 14 in rigid connection with the first connecting rod 15 to rotate around the rotating center of the U-shaped bracket 11, and meanwhile, the second connecting rod 12 in rigid connection with the hexagonal rod 14 moves in the same direction; after the circuit breaker is closed, the second connecting rod 12 overcomes the forces of the groups of the micro switches 13 and the reset spring 17 to switch the micro switches 13 and reach a stop limiting surface;

when the breaker is opened, the main shaft 3 rotates clockwise to drive the rigidly connected third connecting rod 31 to rotate in the same direction, at the moment, the tension spring 2 is released, the hexagonal rod 14 rigidly connected with the first connecting rod 15 instantaneously rotates under the action of the return spring 17 to drive the second connecting rod 12 rigidly connected with the hexagonal rod 14 to move in the same direction until the third connecting rod 31 stops contacting with the limiting shaft 4, namely, the opening is finished, at the moment, the second connecting rod 12 releases the microswitch 13, and the switching purpose is achieved; at the moment, the tension spring 2 is not stretched and does not have the tensile force effect, so that the use process of the auxiliary contact system of the whole universal circuit breaker is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An auxiliary contact system of universal circuit breaker, its characterized in that: the device comprises an auxiliary contact set (1), a tension spring (2) and a main shaft (3), wherein a third connecting rod (31) is arranged on the main shaft (3), and the third connecting rod (31) is connected with the auxiliary contact set (1) through the tension spring (2);

the auxiliary contact group (1) comprises a U-shaped support (11) with an upward opening, a plurality of groups of micro switches (13) are arranged in the U-shaped support (11) at equal intervals, hexagonal rods (14) are rotatably arranged in the U-shaped support (11) and below the groups of micro switches (13), a first connecting rod (15) and a second connecting rod (12) are mounted on the hexagonal rods (14), a through hole for mounting the tension spring (2) is formed in the other end of the first connecting rod (15), and the other end of the second connecting rod (12) is arranged close to the micro switches (13) and used for switching the state of the micro switches (13);

and a return spring (17) for controlling the micro switch (13) to return is also arranged in the U-shaped bracket (11).

2. An auxiliary contact system of a conventional circuit breaker according to claim 1, wherein: the hexagonal rods (14) are arranged in the rotating centers arranged on the left side surface and the right side surface of the U-shaped bracket (11).

3. An auxiliary contact system of a conventional circuit breaker according to claim 1, wherein: reset spring (17) are installed in the one end of hexagonal stick (14), reset spring (17) include two landing legs, a landing leg and second connecting rod (12) of reset spring (17) are connected, and another landing leg and the U type horizontal plane of U type support (11) of reset spring (17) are connected.

4. An auxiliary contact system of a conventional circuit breaker according to claim 1, wherein: an insulating part (16) is arranged between two adjacent microswitches (13) in the U-shaped bracket (11).

5. An auxiliary contact system of a conventional circuit breaker according to claim 1, wherein: the auxiliary contact group (1) comprises a U-shaped support (11), a second connecting rod (12), a microswitch (13), a hexagonal rod (14), a first connecting rod (15), an insulating piece (16) and a return spring (17) which are assembled into an integral module.

6. An auxiliary contact system of a conventional circuit breaker according to claim 1, wherein: and a limiting shaft (4) for limiting is arranged on the third connecting rod (31).

7. An auxiliary contact system of a conventional circuit breaker according to claim 1, wherein: and a through hole for installing the tension spring (2) is formed in the third connecting rod (31).