CN213366509U

CN213366509U - Reset control mechanism of air circuit breaker

Info

Publication number: CN213366509U
Application number: CN202022162480.5U
Authority: CN
Inventors: 于方苏; 王彪
Original assignee: Reymid Electric Jiangsu Co ltd
Current assignee: Reymid Electric Jiangsu Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-06-04
Anticipated expiration: 2030-09-28

Abstract

The utility model belongs to the field of circuit breakers, in particular to a reset control mechanism of an air circuit breaker, which provides a scheme that comprises a shell, wherein an electromagnetic coil is fixedly arranged on the inner wall of one side of the shell, the inner ring of the electromagnetic coil is connected with a firing pin in a sliding way, a bimetallic strip is fixedly arranged on the inner wall of one side of the shell and is positioned below the electromagnetic coil, a T-shaped rod is rotatably connected on the inner wall of one side of the shell and is positioned above the bimetallic strip, and one end of the T-shaped rod is positioned below the electromagnetic coil, the utility model has simple structure, when the power of an air switch is overlarge or short-circuited, the bimetallic strip and the electromagnetic coil can separate a moving contact from a static contact to cut off the power, when the air switch is switched on, the reset rod is pressed down, a knife switch is stirred upwards to enable the moving contact and the static contact, prevent the accidental loss of personnel and property.

Description

Reset control mechanism of air circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field especially relates to an air circuit breaker reset control mechanism.

Background

An air switch, also known as an air circuit breaker, is one type of circuit breaker. The switch can be automatically switched off as long as the current in the circuit exceeds the rated current. The air switch is an important electric appliance in a low-voltage distribution network and an electric power dragging system, and integrates control and multiple protection functions. Besides the contact and breaking of the circuit, the protection of short circuit, severe overload and undervoltage, etc. of the circuit or electrical equipment can be realized, and the protection device can also be used for starting the motor infrequently.

The existing air switch is capable of directly switching on more when people cannot clearly distinguish faults or trip caused by overlarge power after fault tripping, so that personnel injuries and property loss are probably caused, and people urgently need an air switch with a reset key.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the existing air circuit breaker reset control mechanism cannot be clearly distinguished as a fault or a tripping defect caused by excessive power in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an air circuit breaker reset control mechanism comprises a shell, wherein an electromagnetic coil is fixedly mounted on the inner wall of one side of the shell, a striker is slidably connected to the inner ring of the electromagnetic coil, a bimetallic strip is fixedly mounted on the inner wall of one side of the shell and positioned below the electromagnetic coil, a T-shaped rod is rotatably connected to the inner wall of one side of the shell and positioned above the bimetallic strip, one end of the T-shaped rod is positioned below the electromagnetic coil, a second fixing rod is rotatably connected to the inner wall of one side of the shell and positioned above the T-shaped rod, a second fixing block is fixedly mounted on one side of the shell and positioned on one side of the T-shaped rod, a third tension spring is fixedly mounted at the top of the second fixing block, the top end of the third tension spring is fixedly connected with the bottom of the second fixing rod, and a sliding block is fixedly mounted on the inner wall of one side of the shell, the inner wall of one side of the shell is connected with a reset rod in a sliding manner, the top end of the reset rod penetrates through the bottom of the sliding block and the inner wall of one side of the shell and extends to the outside of the shell, one side of the reset rod is attached to the bottom of a second fixed rod, the outer wall of the reset rod is sleeved with a first tension spring, the top end of the first tension spring is fixedly connected with the bottom of the sliding block, the outer wall of the reset rod is fixedly sleeved with a limiting plate, the top of the limiting plate is fixedly connected with the bottom end of the first tension spring, a first fixed block is fixedly mounted on the inner wall of one side of the shell, a second tension spring is fixedly mounted on the top of the first fixed block, the inner wall of one side of the shell is rotatably connected with a first fixed rod, the bottom of the first fixed rod is fixedly connected with the top end of the second tension spring, the bottom of, and the one end of plug-in strip extends to the outside of casing, fixedly connected with chi spring in the plug-in strip, and the inner circle of chi spring and one side inner wall fixed connection of casing, the one end of first dead lever is laminated mutually with one side of plug-in strip, one side inner wall of casing rotates and is connected with the moving contact, and the moving contact is located one side of firing pin and release link, the one end of moving contact extends to the top of plug-in strip, one side inner wall fixedly connected with spring of casing, and the bottom of spring and the top fixed connection of moving contact.

Preferably, the top of the shell is provided with a wiring port, so that the connection of an electric wire can be facilitated.

Preferably, a fixed contact is fixedly mounted on the inner wall of one side of the shell, and the fixed contact is in contact with one side of the movable contact, so that the shell can be conveniently electrified.

Preferably, an arc extinguishing chamber is fixedly mounted on the inner wall of one side of the shell, and wiring arc extinguishing can be performed during opening and closing.

Preferably, a plurality of connectors are fixedly mounted on the inner wall of one side of the shell, so that the shells can be conveniently fixed.

Preferably, the bottom of the shell is provided with an outlet, so that the electric wire can be conveniently connected.

In the utility model, when the air switch is used and the air switch has overlarge power, the bimetallic strip can be bent and push one end of the second fixed rod to move upwards, if the air switch is short-circuited, the electromagnetic coil can drive the striker to move one end of the second fixed rod upwards, the second fixed rod can stretch the third tension spring and separate from the reset rod, the first tension spring can retract, the reset rod moves upwards, the reset rod drives the first fixed rod to move upwards and stretch the second tension spring, the first fixed rod can be separated from the knife switch to release the brake, the blade spring can drive the knife switch to rotate, the knife switch can push the movable contact to compress the spring and separate from the static contact to cut off the power, when the switch is to be switched on, the reset rod is pressed to stretch the first tension spring, the second tension spring can drive the first fixed rod to reset, the reset rod can drive one end of the second fixed rod to move downwards, and stretching the third tension spring, when the second fixed rod moves downwards to a certain position, the third tension spring can drive the second fixed rod to reset, the reset rod and the second fixed rod can be clamped again, the knife switch is stirred upwards to reset, one end of the knife switch can be separated from one end of the moving contact, the spring rebounds and drives the contact to reset, the moving contact and the static contact are attached to be electrified, and the first fixed rod can be clamped with the knife switch again.

The utility model discloses simple structure, when air switch power is too big or the short circuit, bimetallic strip and solenoid can make moving contact and static contact separate the outage, when closing a floodgate, press the release link, stir the plug-in strip upwards and make moving contact and static contact laminating switch on.

Drawings

Fig. 1 is a schematic structural diagram of a reset control mechanism of an air circuit breaker according to the present invention;

fig. 2 is a schematic structural view of a reset rod of a reset control mechanism of an air circuit breaker according to the present invention;

fig. 3 is the utility model provides a knife switch structural schematic of air circuit breaker reset control mechanism.

In the figure: 1. a housing; 2. a striker; 3. a moving contact; 4. a reset lever; 5. a slider; 6. a spring; 7. static contact; 8. a first tension spring; 9. a limiting plate; 10. a knife switch; 11. a scale spring; 12. a first fixing lever; 13. a second tension spring; 14. a first fixed block; 15. a second fixing bar; 16. a third tension spring; 17. a second fixed block; 18. a T-shaped rod; 19. a bimetal; 20. an electromagnetic coil; 21. a wiring port; 22. an arc extinguishing chamber; 23. a connecting port; 24. and (6) an outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example one

Referring to fig. 1-3, a reset control mechanism of an air circuit breaker comprises a housing 1, a solenoid 20 is fixedly installed on one side inner wall of the housing 1, a striker 2 is slidably connected to an inner ring of the solenoid 20, a bimetal 19 is fixedly installed on one side inner wall of the housing 1, the bimetal 19 is positioned below the solenoid 20, a T-shaped rod 18 is rotatably connected to one side inner wall of the housing 1, the T-shaped rod 18 is positioned above the bimetal 19, one end of the T-shaped rod 18 is positioned below the solenoid 20, a second fixing rod 15 is rotatably connected to one side inner wall of the housing 1, the second fixing rod 15 is positioned above the T-shaped rod 18, a second fixing block 17 is fixedly installed on one side of the housing 1, the second fixing block 17 is positioned on one side of the T-shaped rod 18, a third tension spring 16 is fixedly installed on the top of the second fixing block 17, and the top end of the third tension spring 16 is fixedly connected, a sliding block 5 is fixedly arranged on the inner wall of one side of the shell 1, a reset rod 4 is connected to the inner wall of one side of the shell 1 in a sliding manner, the top end of the reset rod 4 penetrates through the bottom of the sliding block 5 and the inner wall of one side of the shell 1 and extends to the outside of the shell 1, one side of the reset rod 4 is attached to the bottom of a second fixing rod 15, a first tension spring 8 is sleeved on the outer wall of the reset rod 4, the top end of the first tension spring 8 is fixedly connected with the bottom of the sliding block 5, a limiting plate 9 is fixedly sleeved on the outer wall of the reset rod 4, the top of the limiting plate 9 is fixedly connected with the bottom end of the first tension spring 8, a first fixing block 14 is fixedly arranged on the inner wall of one side of the shell 1, a second tension spring 13 is fixedly arranged on the top of the first fixing block 14, a first fixing rod 12 is rotatably connected to the inner wall of one side of the shell 1, one side inner wall of casing 1 rotates and is connected with plug-in strip 10, and the one end of plug-in strip 10 extends to the outside of casing 1, fixedly connected with chi spring 11 in the plug-in strip 10, and the inner circle of chi spring 11 and one side inner wall fixed connection of casing 1, the one end of first dead lever 12 is laminated with one side of plug-in strip 10 mutually, one side inner wall of casing 1 rotates and is connected with moving contact 3, and moving contact 3 is located one side of firing pin 2 and release link 4, the one end of moving contact 3 extends to the top of plug-in strip 10, one side inner wall fixedly connected with spring 6 of casing 1, and the bottom of spring 6 and the top fixed connection of moving contact 3.

Example two

The embodiment is improved on the basis of the first embodiment: the top of casing 1 is provided with wiring mouth 21, can make things convenient for the access of electric wire, one side inner wall fixed mounting of casing 1 has static contact 7, and static contact 7 contacts with one side of moving contact 3, can make things convenient for the circular telegram, one side inner wall fixed mounting of casing 1 has explosion chamber 22, can be at wiring arc extinguishing when separating brake and closing a floodgate, one side inner wall fixed mounting of casing 1 has a plurality of connectors 23, can make things convenient for fixing between the casing 1, the bottom of casing 1 is provided with outlet 24, can make things convenient for the access of electric wire.

The working principle is as follows: when the air switch is used, when the air switch power is too high, the bimetallic strip 19 bends, the bimetallic strip 19 pushes one end of the T-shaped rod 18 to move upwards, if the air switch is short-circuited, the electromagnetic coil 20 generates a magnetic field to drive the striker 2 to move downwards, the striker 2 passes through the electromagnetic coil 20 and drives one end of the T-shaped rod 18 to move downwards, the other end of the T-shaped rod 18 moves upwards, the T-shaped rod 18 pushes one end of the second fixing rod 15 to move upwards, one end of the second fixing rod 15 stretches the third tension spring 16, the other end of the second fixing rod 15 moves downwards and is separated from the reset rod 4, the first tension spring 8 retracts, the first tension spring 8 pulls the limiting plate 9 to move upwards, the limiting plate 9 drives the reset rod 4 to move upwards, the reset rod 4 drives one end of the first fixing rod 12 to move upwards and stretches the second tension spring 13, the other end of the first fixing rod 12 will move downwards and brake separately from the switch blade 10, the spring 11 will extend backwards, the spring 11 will drive the switch blade 10 to rotate, one end of the switch blade 10 will push one end of the moving contact 3 to move upwards and compress the spring 6, and the other end of the moving contact 3 will move downwards and separate from the static contact 7 to cut off the power, when closing, the restoring rod 4 will be pressed down, the restoring rod 4 will drive the limiting plate 9 to move downwards, the limiting plate 9 will stretch the first tension spring 8, the second tension spring 13 will retract and drive one end of the first fixing rod 12 to move downwards, and the other end of the first fixing rod 12 will move upwards, one end of the restoring rod 4 will drive one end of the second fixing rod 15 to move downwards, and the other end of the second fixing rod 15 will move upwards and stretch the third tension spring 16, when the second fixing rod 15 moves downwards to a certain position, it will separate from the restoring rod 4, the third tension spring 16 can be retracted to drive the second fixing rod 15 to reset, the reset rod 4 and the second fixing rod 15 can be re-clamped, the switch blade 10 is shifted upwards to reset, one end of the switch blade 10 can be separated from one end of the movable contact 3, the spring 6 is retracted, the spring 6 pushes one end of the movable contact 3 to move downwards, the other end of the movable contact 3 moves upwards and is attached to the fixed contact 7 to be electrified, and the first fixing rod 12 can be re-clamped with the switch blade 10.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The reset control mechanism of the air circuit breaker comprises a shell (1) and is characterized in that an electromagnetic coil (20) is fixedly mounted on the inner wall of one side of the shell (1), a striker (2) is slidably connected to the inner ring of the electromagnetic coil (20), a bimetallic strip (19) is fixedly mounted on the inner wall of one side of the shell (1), the bimetallic strip (19) is located below the electromagnetic coil (20), a T-shaped rod (18) is rotatably connected to the inner wall of one side of the shell (1), the T-shaped rod (18) is located above the bimetallic strip (19), one end of the T-shaped rod (18) is located below the electromagnetic coil (20), a second fixing rod (15) is rotatably connected to the inner wall of one side of the shell (1), the second fixing rod (15) is located above the T-shaped rod (18), and a second fixing block (17) is fixedly mounted on one side of the shell (1), and the second fixed block (17) is positioned on one side of the T-shaped rod (18), the top of the second fixed block (17) is fixedly provided with a third tension spring (16), the top end of the third tension spring (16) is fixedly connected with the bottom of the second fixed rod (15), one side inner wall of the shell (1) is fixedly provided with a sliding block (5), one side inner wall of the shell (1) is slidably connected with a reset rod (4), the top end of the reset rod (4) penetrates through the bottom of the sliding block (5) and one side inner wall of the shell (1) and extends to the outside of the shell (1), one side of the reset rod (4) is attached to the bottom of the second fixed rod (15), the outer wall of the reset rod (4) is sleeved with a first tension spring (8), the top end of the first tension spring (8) is fixedly connected with the bottom of the sliding block (5), and the outer wall of the reset rod (4) is fixedly sleeved with a limiting plate (, the top of the limiting plate (9) is fixedly connected with the bottom end of the first tension spring (8), a first fixing block (14) is fixedly mounted on the inner wall of one side of the shell (1), a second tension spring (13) is fixedly mounted on the top of the first fixing block (14), a first fixing rod (12) is rotatably connected to the inner wall of one side of the shell (1), the bottom of the first fixing rod (12) is fixedly connected with the top end of the second tension spring (13), the bottom of the first fixing rod (12) is attached to one side of the reset rod (4), a knife switch (10) is rotatably connected to the inner wall of one side of the shell (1), one end of the knife switch (10) extends to the outside of the shell (1), a scale spring (11) is fixedly connected in the knife switch (10), the inner ring of the scale spring (11) is fixedly connected with the inner wall of one side of the shell (1), one end of the first fixing rod (12) is attached to one side of the knife switch (10), the switch is characterized in that a moving contact (3) is rotatably connected to the inner wall of one side of the shell (1), the moving contact (3) is located on one side of the firing pin (2) and the reset rod (4), one end of the moving contact (3) extends to the upper portion of the switch blade (10), a spring (6) is fixedly connected to the inner wall of one side of the shell (1), and the bottom end of the spring (6) is fixedly connected with the top of the moving contact (3).

2. An air circuit breaker reset control mechanism according to claim 1 characterized in that the top of the housing (1) is provided with a wiring port (21).

3. The air circuit breaker reset control mechanism according to claim 1, wherein a fixed contact (7) is fixedly installed on an inner wall of one side of the housing (1), and the fixed contact (7) is in contact with one side of the movable contact (3).

4. An air circuit breaker reset control mechanism according to claim 1 characterized in that an arc extinguishing chamber (22) is fixedly installed on one side inner wall of the housing (1).

5. The reset control mechanism of an air circuit breaker according to claim 1, wherein a plurality of connection ports (23) are fixedly installed on one side inner wall of the housing (1).

6. An air circuit breaker reset control mechanism according to claim 1 characterized in that the bottom of the housing (1) is provided with an outlet (24).