CN216597469U - Breaker state switching device - Google Patents
Breaker state switching device Download PDFInfo
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- CN216597469U CN216597469U CN202123390346.1U CN202123390346U CN216597469U CN 216597469 U CN216597469 U CN 216597469U CN 202123390346 U CN202123390346 U CN 202123390346U CN 216597469 U CN216597469 U CN 216597469U
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- swing arm
- circuit breaker
- fixed plate
- switching device
- plate
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Abstract
The utility model provides a state switching device of a circuit breaker, which comprises a fixed plate, a swing arm, a tension spring and a handle; the fixed plate is connected with the shell of the circuit breaker; the swing arm is rotationally connected with the fixed plate and can be switched between a normal position and an emergency position; the tension spring is connected between the swing arm and the fixed plate and used for driving the swing arm to be switched to a normal position or an emergency position; the handle sets up in one side of fixed plate, handle fixed connection is in the swing arm for control swing arm is rotatory. When the swing arm is in a normal position, the swing arm pulls a brake-separating half shaft buckle plate in the circuit breaker; when the swing arm is in the emergency position, the swing arm is separated from a brake-separating half shaft buckle plate in the circuit breaker. This application can avoid spring operating device to influence permanent magnet operating device's response time, resumes the circuit breaker normal state after accomplishing emergency operation, ensures the response time of circuit breaker in the scope that needs.
Description
Technical Field
The utility model relates to a circuit breaker accessory, especially a circuit breaker state auto-change over device.
Background
The opening and closing time and the action time of the matched relay protection module form complete opening time;
because the action time of each matched relay protection module is inconsistent, and the action time of part of relays is longer, the requirement on the switch-off time of the switch is higher, so that the requirement of a power system on the fault clearing time is met.
The permanent magnet operating mechanism is popularized and used due to the advantages of simple structure, maintenance-free and short brake closing and opening time. The permanent magnet operating mechanism is driven by electromagnetism and kept by permanent magnet to realize switching on and off, and the switching on and off can be realized by the permanent magnet operating mechanism in a normal state (namely an electric state), but the switching on and off can not be realized in an emergency state (namely a power-off state such as damage of a controller).
The spring operating mechanism is not affected by power loss, namely, under an emergency state, manual switching-on can be realized by means of mechanical buckling of the switching-off half shaft buckle plate and the fastener under the action of spring elasticity, and the switching-on operation of the circuit breaker is met by matching with the permanent magnet operating mechanism.
However, the operation time of the opening operation process is increased by the locking device of the manual closing mechanism in the emergency state, so that the opening response time of the circuit breaker is prolonged, and the integral opening speed is reduced.
Therefore, there is a need for a circuit breaker state switching device capable of shielding a spring operating mechanism in a normal state, avoiding the spring operating mechanism from affecting the response time of a permanent magnet operating mechanism, and switching to an operable state of the spring operating mechanism in an emergency state, so as to ensure the normal use of the permanent magnet operating mechanism.
Disclosure of Invention
To the not enough of existence among the prior art, the utility model provides a circuit breaker state auto-change over device realizes under normal condition and the emergency state to spring operating mechanism's operation control. The utility model adopts the technical proposal that:
a state switching device of a circuit breaker comprises a fixed plate;
the swing arm is rotatably connected to the fixed plate and can be switched between a normal position and an emergency position;
the tension spring is connected between the swing arm and the fixed plate and used for driving the swing arm to be switched to a normal position or an emergency position; and
the handle is arranged on one side of the fixing plate and fixedly connected with the swing arm and used for controlling the swing arm to rotate;
wherein the content of the first and second substances,
when the swing arm is in a normal position, the swing arm stirs a brake-separating half shaft buckle plate in the circuit breaker; when the swing arm is in the emergency position, the swing arm is separated from a brake-separating half shaft buckle plate in the circuit breaker.
Furthermore, a first limiting piece and a second limiting piece are arranged on the fixed plate, one end of the swing arm is rotatably connected to the fixed plate, and the other end of the swing arm is positioned between the first limiting piece and the second limiting piece;
when the other end butt of swing arm was in first locating part, the swing arm was in normal position, and when the other end butt of swing arm was in second locating part, the swing arm was in emergent position.
Furthermore, be equipped with first extension spring fixed axle on the fixed plate, be equipped with second extension spring fixed axle on the swing arm, tension spring one end is connected in first extension spring fixed axle, tension spring's the other end is connected in second extension spring fixed axle.
Furthermore, a shifting shaft is arranged on the swing arm and used for shifting the opening half shaft buckle plate;
when the swing arm is in a normal position, the shifting shaft shifts a brake-separating half shaft buckle plate in the circuit breaker; when the swing arm is in the emergency position, the shifting shaft is separated from a brake-separating half shaft buckle plate in the circuit breaker.
Furthermore, a through hole is formed in the fixing plate, and one end of the swing arm penetrates through the through hole;
the handle is sleeved at one end of the swing arm.
Furthermore, one end of the swing arm is provided with a flange bearing, and the swing arm is rotatably connected with the fixed plate through the flange bearing.
Furthermore, a fixing piece is arranged at one axial end of the flange bearing and penetrates through the flange bearing to be connected with the swing arm.
Further, one side of the fixing plate, which is far away from the flange bearing, is provided with a nut, and the nut is in threaded connection with the swing arm.
The utility model has the advantages that: the swing arm is rotated by the handle, so that the swing arm is switched to a normal position or an emergency position under the action of the tension spring, the swing arm is abutted to the opening half shaft buckle plate in the normal position and drives the opening half shaft buckle plate to be far away from an opening fastener, the spring operating mechanism is kept in an opening state all the time, the condition that the permanent magnet operating mechanism controls the opening and closing of the circuit breaker independently in a power-on state is met, the influence of the spring operating mechanism on the permanent magnet operating mechanism is shielded, and the opening time is shortened; the swing arm loses the restriction on the half-shaft pinch plate of the split brake in the emergency position, and can be normally and manually switched on under the power-off condition, so that the switching-on requirement under the power-off state is met.
Drawings
Fig. 1 is an assembly exploded view of the present invention.
Fig. 2 is a structural diagram of the fixing plate of the present invention.
Fig. 3 is the state diagram of the swing arm in the normal position.
Fig. 4 is the state diagram of the swing arm in the emergency position.
In the figure: 1-fixed plate, 2-swing arm, 3-tension spring, 4-handle, 5-flange bearing, 6-fixed piece, 7-nut, 8-opening half shaft buckle, 101-first limiting piece, 102-second limiting piece, 103-first tension spring fixed shaft, 104-through hole, 201-second tension spring fixed shaft and 202-toggle shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1-4, the present invention provides a circuit breaker state switching device, which includes a fixed plate 1, a swing arm 2, a tension spring 3 and a handle 4; the fixed plate 1 is connected with the shell of the circuit breaker; the swing arm 2 is rotatably connected to the fixed plate 1, and the swing arm 2 can be switched between a normal position and an emergency position; the tension spring 3 is connected between the swing arm 2 and the fixed plate 1 and is used for driving the swing arm 2 to be switched to a normal position or an emergency position; the position of the swing arm 2 is switched by utilizing the over-center characteristic of the tension spring 3, and the swing arm 2 is also conveniently controlled; the handle 4 is arranged on one side of the fixing plate 1, and the handle 4 is fixedly connected to the swing arm 2 and used for controlling the swing arm 2 to rotate. When the swing arm 2 is in a normal position, the swing arm 2 pulls a brake separating half shaft buckle plate 8 in the circuit breaker; when the swing arm 2 is in the emergency position, the swing arm 2 is separated from a brake-separating half shaft buckle 8 in the circuit breaker.
As an embodiment of the present application, a first limiting member 101 and a second limiting member 102 are disposed on the fixing plate 1, one end of the swing arm 2 is rotatably connected to the fixing plate 1, and the other end of the swing arm 2 is located between the first limiting member 101 and the second limiting member 102; when the other end of the swing arm 2 abuts against the first limiting piece 101, the swing arm 2 is in a normal position, and when the other end of the swing arm 2 abuts against the second limiting piece 102, the swing arm 2 is in an emergency position; the first stopper 101 and the second stopper 102 limit the range of motion of the swing arm 2.
Preferably, the first limiting member 101 and the second limiting member 102 are perpendicular to the fixing plate 1, and the lengths of the first limiting member 101 and the second limiting member 102 are the same.
Preferably, the first limiting member 101 and the second limiting member 102 both penetrate into the housing of the circuit breaker.
In order to facilitate the installation of the tension spring 3, a first tension spring fixing shaft 103 is arranged on the fixing plate 1, a second tension spring fixing shaft 201 is arranged on the swing arm 2, one end of the tension spring 3 is connected to the first tension spring fixing shaft 103, and the other end of the tension spring 3 is connected to the second tension spring fixing shaft 201; the elastic force of the tension spring 3 enables the swing arm 2 to be always abutted against the first limiting piece 101 or the second limiting piece 102, so that the swing arm 2 is prevented from swinging randomly; preferably, a connecting line between the first tension spring fixing shaft 103 and the second tension spring fixing shaft 201 is located at a midpoint of a connecting line between the first limiting member 101 and the second limiting member 102, so that when the other end of the swing arm 2 moves to the middle between the first limiting member 101 and the second limiting member, the elastic force of the tension spring 3 is the largest, and the swing arm 2 is convenient to approach the first limiting member 101 or the second limiting member 102.
Preferably, the first tension spring fixing shaft 103 penetrates into the case of the circuit breaker.
In order to better match the swing arm 2 with the opening half shaft buckle plate 8, a shifting shaft 202 is arranged on the swing arm 2, and the shifting shaft 202 is used for shifting the opening half shaft buckle plate 8; when the swing arm 2 is in a normal position, the shifting shaft 202 shifts a brake-separating half shaft buckle plate 8 in the circuit breaker; when the swing arm 2 is in the emergency position, the shifting shaft 202 is separated from the opening half shaft buckle plate 8 in the circuit breaker.
In order to facilitate the positioning of the swing arm 2 on the fixing plate 1, a through hole 104 is formed in the fixing plate 1, and one end of the swing arm 2 penetrates through the through hole 104; the handle 4 is sleeved at one end of the swing arm 2; the through hole 104 is located inside a connecting line of the first limiting member 101, the second limiting member 102 and the first tension spring fixing shaft 103, so as to meet the requirement of switching the positions of the swing arm 2.
In order to reduce the resistance when the swing arm 2 rotates, one end of the swing arm 2 is provided with a flange bearing 5, and the swing arm 2 is rotatably connected with the fixed plate 1 through the flange bearing 5.
In order to facilitate the disassembly and assembly of the swing arm 2, a fixing piece 6 is arranged at one axial end of the flange bearing 5, and the fixing piece 6 penetrates through the flange bearing 5 and is connected with the swing arm 2; preferably, the fixing member 6 is a detachable member such as a screw or a pin.
In order to realize the fixation between the fixed plate 1 and the shell of the circuit breaker, a nut 7 is arranged on one side of the fixed plate 1, which is far away from the flange bearing 5, and the nut 7 is in threaded connection with the swing arm 2; the nut 7 is rotated to enable the nut 7 and the fixed plate 1 to clamp the shell of the circuit breaker, namely, the fixed plate 1 is installed and fixed.
The using method comprises the following steps:
when the circuit breaker is electrified, the swing arm 2 is in a normal position, the swing arm 2 abuts against the first limiting part 101, and the shifting shaft 202 shifts the opening half shaft buckle plate 8, so that the spring operating mechanism is always in an opening state and cannot be operated, and the independent opening and closing operation of a permanent magnet operating mechanism in the circuit breaker is met;
when the circuit breaker loses power, the handle 4 is rotated, the handle 4 drives the swing arm 2 to rotate to an emergency position, the elastic force of the tension spring 3 is increased and then reduced, the swing arm 2 is convenient to abut against the second limiting part 102, the shifting shaft 202 leaves the opening semi-axis buckle plate 8, the opening semi-axis buckle plate 8 is out of control, and the spring operating mechanism can be operated to perform manual closing.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to examples, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (8)
1. A circuit breaker state switching device characterized in that: comprises that
A fixed plate (1);
the swing arm (2) is rotatably connected to the fixing plate (1), and the swing arm (2) can be switched between a normal position and an emergency position;
the tension spring (3) is connected between the swing arm (2) and the fixed plate (1) and is used for driving the swing arm (2) to be switched to a normal position or an emergency position; and
the handle (4) is arranged on one side of the fixing plate (1), and the handle (4) is fixedly connected to the swing arm (2) and used for controlling the swing arm (2) to rotate;
wherein the content of the first and second substances,
when the swing arm (2) is in a normal position, the swing arm (2) toggles a brake-separating half shaft buckle plate (8) in the circuit breaker; when the swing arm (2) is in the emergency position, the swing arm (2) is separated from a brake-separating half shaft buckle (8) in the circuit breaker.
2. The circuit breaker state switching device of claim 1, wherein: a first limiting part (101) and a second limiting part (102) are arranged on the fixing plate (1), one end of the swing arm (2) is rotatably connected to the fixing plate (1), and the other end of the swing arm (2) is positioned between the first limiting part (101) and the second limiting part (102);
when the other end of the swing arm (2) abuts against the first limiting part (101), the swing arm (2) is in a normal position, and when the other end of the swing arm (2) abuts against the second limiting part (102), the swing arm (2) is in an emergency position.
3. The circuit breaker state switching device of claim 2, wherein: be equipped with first extension spring fixed axle (103) on fixed plate (1), be equipped with second extension spring fixed axle (201) on swing arm (2), tension spring (3) one end is connected in first extension spring fixed axle (103), the other end of tension spring (3) is connected in second extension spring fixed axle (201).
4. The circuit breaker state switching device of claim 1, wherein: a shifting shaft (202) is arranged on the swing arm (2), and the shifting shaft (202) is used for shifting the opening half shaft buckle plate (8);
when the swing arm (2) is in a normal position, the shifting shaft (202) shifts a brake-separating half shaft buckle plate (8) in the circuit breaker; when the swing arm (2) is in an emergency position, the shifting shaft (202) is separated from a brake-separating half shaft buckle plate (8) in the circuit breaker.
5. The circuit breaker state switching device of claim 2, wherein: a through hole (104) is formed in the fixing plate (1), and one end of the swing arm (2) penetrates through the through hole (104);
the handle (4) is sleeved at one end of the swing arm (2).
6. The circuit breaker state switching device of claim 5, wherein: one end of the swing arm (2) is provided with a flange bearing (5), and the swing arm (2) is rotatably connected with the fixed plate (1) through the flange bearing (5).
7. The circuit breaker state switching device of claim 6, wherein: the axial one end of flange bearing (5) is provided with mounting (6), mounting (6) run through in flange bearing (5) and are connected with swing arm (2).
8. The circuit breaker state switching device of claim 6 or 7, wherein: one side of the fixed plate (1) far away from the flange bearing (5) is provided with a nut (7), and the nut (7) is in threaded connection with the swing arm (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123390346.1U CN216597469U (en) | 2021-12-30 | 2021-12-30 | Breaker state switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123390346.1U CN216597469U (en) | 2021-12-30 | 2021-12-30 | Breaker state switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216597469U true CN216597469U (en) | 2022-05-24 |
Family
ID=81629768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123390346.1U Active CN216597469U (en) | 2021-12-30 | 2021-12-30 | Breaker state switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216597469U (en) |
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2021
- 2021-12-30 CN CN202123390346.1U patent/CN216597469U/en active Active
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