CN209859898U - N-pole circuit breaker without arc extinguishing device - Google Patents
N-pole circuit breaker without arc extinguishing device Download PDFInfo
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- CN209859898U CN209859898U CN201920798304.5U CN201920798304U CN209859898U CN 209859898 U CN209859898 U CN 209859898U CN 201920798304 U CN201920798304 U CN 201920798304U CN 209859898 U CN209859898 U CN 209859898U
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Abstract
The utility model discloses a circuit breaker without an arc extinguishing device on the N pole, which comprises an N pole circuit breaker and a live wire circuit breaker arranged adjacent to the N pole circuit breaker, wherein an N pole circuit breaker tripping striker, an N pole circuit breaker tripping link rod and an N pole circuit breaker contact mechanism driving wheel are arranged inside the N pole circuit breaker; a live wire breaker tripping link rod, a live wire breaker handle driving wheel and a handle coupling deflector rod are arranged in the live wire breaker; the live line breaker tripping link rod and the N-pole breaker tripping link rod form a cross and mutual insertion structure; the handle coupling deflector rod connects the live wire breaker handle driving wheel and the N-pole breaker contact mechanism driving wheel in series. The utility model provides a circuit breaker of arc extinguishing device is not taken to the N utmost point, and live wire circuit breaker dropout link rod and the mutual trigger dropout design of N utmost point circuit breaker dropout link rod formation alternately inserting structure guarantee that the N utmost point circuit breaker contact does not produce electric arc, improve the accuracy of N utmost point circuit breaker break-before-make.
Description
Technical Field
The utility model relates to an electrical switching technology field especially relates to a circuit breaker that arc control device was not taken to N utmost point.
Background
The electric switch contact can all produce electric arc when cutting off electric current or carrying switch-on and disconnection, it is dangerous and harmful, every grade of the multipolar circuit breaker that has the N utmost point on the market now all possesses contact arc control device, because it is uncertain which utmost point circuit breaker contact closes earlier when closing a floodgate, when the dropout falls off the floodgate, also uncertain which utmost point circuit breaker breaks off at last, if can ensure in the aspect of circuit breaker mechanical structure design that N utmost point circuit breaker possesses reliable first break-after-break function, on antidetonation (prevent mistake from falling off the floodgate) performance, the dropout sensitivity of live wire circuit breaker is superior to the N utmost point, just can get rid of the circuit breaker arc control device of the N utmost point, thereby reduce manufacturing cost, also can be with other protection equipment or components and parts of space installation that save, realize the protection of more functions with the volume of.
However, the existing N-pole circuit breaker without arc extinguishing device usually adopts a mode of increasing the contact over travel on the design of first on and second off, the contact pressure must be changed by increasing the over travel, and even the contact mechanism of N pole needs to be redesigned, so that many parts become not universal, and the mode has the defects of not obvious difference of first on and second off time and needing to change the contact pressure. Therefore, the utility model provides a circuit breaker of arc extinguishing device is not taken to N utmost point to the weak point among the solution prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a circuit breaker that arc extinguishing device is not taken to N utmost point, live wire circuit breaker dropout link rod and the mutual trigger dropout design of N utmost point circuit breaker dropout link rod formation alternately mutual insertion structure guarantee that N utmost point circuit breaker contact does not produce electric arc, improve the accuracy that N utmost point circuit breaker closed before, with low costs, the commonality is strong.
In order to achieve the above object, the utility model provides a following scheme:
a circuit breaker without an arc extinguishing device on an N pole comprises an N pole circuit breaker and a live wire circuit breaker arranged adjacent to the N pole circuit breaker, wherein an N pole circuit breaker tripping impact rod, an N pole circuit breaker tripping link rod, an N pole circuit breaker tripping lever spring, an N pole moving contact motion mechanism, a driving arm, a U-shaped connecting rod and an N pole circuit breaker contact mechanism driving wheel are arranged inside the N pole circuit breaker;
the live wire circuit breaker is internally provided with a live wire circuit breaker tripping link, a live wire circuit breaker handle driving wheel, a handle coupling driving lever, a live wire circuit breaker tripping lever spring and a live wire circuit breaker moving contact motion mechanism, and the live wire circuit breaker moving contact motion mechanism is provided with a live wire circuit breaker energy storage mechanism;
the live wire circuit breaker tripping link rod and the N-pole circuit breaker tripping link rod form a cross mutual insertion structure, the live wire circuit breaker tripping link rod is inserted into the N-pole circuit breaker, the N-pole circuit breaker tripping link rod is inserted into the live wire circuit breaker, one end of the N-pole circuit breaker tripping link rod is connected with the electromagnetic tripping device, and the other end of the N-pole circuit breaker tripping link rod and the live wire circuit breaker tripping link rod are arranged in close proximity at a set interval;
the handle coupling deflector rod is used for connecting the live wire breaker handle driving wheel and the N-pole breaker contact mechanism driving wheel in series, and the N-pole breaker contact mechanism driving wheel is provided with a limiting structure used for limiting the rotation angle of the handle coupling deflector rod.
Preferably, limit structure is the sector groove, the sector groove sets up inside N utmost point circuit breaker contact mechanism drive wheel, be equipped with the shifting block on the handle shaft coupling driving lever, the shifting block is located inside the sector groove, just the shifting block is in free rotation angle slightly in the sector groove is greater than the combined floodgate of live wire circuit breaker handle drive wheel and the rotation angle that falls to floodgate.
Preferably, one end of the handle coupling deflector rod is of a non-circular structure and is connected with the live wire breaker handle driving wheel, and the other end of the handle coupling deflector rod is of a circular shaft structure and is connected with the N-pole breaker contact mechanism driving wheel.
Preferably, one end of the tripping link rod of the N-pole circuit breaker extends to be arranged at the tail end of a tripping and tripping movement track of the moving contact movement mechanism of the live-wire circuit breaker.
Preferably, the live wire circuit breaker is provided with a plurality ofly, and is a plurality of the live wire circuit breaker sets up one side of N utmost point circuit breaker, adjacent two pass through between the live wire circuit breaker tripping link rod links together.
Preferably, if the distance between the tripping link of the N-pole circuit breaker and the moving contact movement mechanism of the live-wire circuit breaker is S, S satisfies the following formula:
S＞(Pi-1)A+(Bfire(s)+CFire(s))-(Bn+Cn)，
Wherein, PiRepresenting the number of live wire circuit breakers, A representing the non-contact free gap between two adjacent live wire circuit breaker tripping links, BFire(s)Indicating the width of the live wire breaker tripping latch hook, CFire(s)Indicating contact overtravel of said live line breaker, BnIndicating the width of the tripping latch hook of the N-pole circuit breaker, CnIndicating the contact overtravel of the N-pole breaker.
Preferably, the torsion of the N-pole breaker tripping lever spring is greater than the torsion of the live line breaker tripping lever spring.
Preferably, the diameter of the steel wire of the N-pole circuit breaker tripping lever spring is larger than that of the steel wire of the live wire circuit breaker tripping lever spring, and the strength of the steel wire of the N-pole circuit breaker tripping lever spring is the same as that of the steel wire of the live wire circuit breaker tripping lever spring.
Preferably, the live wire breaker energy storage mechanism is an energy storage stop block, and the N-pole breaker is not internally provided with the energy storage mechanism.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect: the utility model provides a circuit breaker of arc extinguishing device is not taken to N utmost point, firstly, adopt N utmost point circuit breaker dropout link rod and live wire circuit breaker dropout link rod to form alternately inserting structure, constitute the design of triggering the dropout each other, after the moving contact of live wire circuit breaker breaks away from the contact, and when the moving contact motion of live wire circuit breaker reached and is about to arrive the terminal point, percussion N utmost point circuit breaker dropout link rod action again, guaranteed that the disconnection of N utmost point circuit breaker contact and the disconnection of adjacent live wire circuit breaker contact produce obvious time difference, thereby reach the purpose that N utmost point circuit breaker does not produce electric arc; secondly, through the arrangement that the torsion of a tripping lever spring of the N-pole circuit breaker is larger than that of a tripping lever spring of the live wire circuit breaker, the tripping sensitivity of the adjacent live wire circuit breakers is far higher than that of the N-pole circuit breaker, and when strong vibration is encountered, the live wire circuit breaker can trip and trip before the N-pole circuit breaker, so that the anti-vibration capability of the N-pole circuit breaker is far higher than that of the live wire circuit breaker; thirdly, a fan-shaped groove is formed in a driving wheel of the contact mechanism of the N-pole circuit breaker, a shifting block is arranged on a shifting rod of a handle coupling shaft, and the shifting block only has a certain free rotation angle space in the fan-shaped groove, so that the power failure of the N-pole circuit breaker is ensured, and the defects that the handles of the traditional multi-pole circuit breaker are connected in parallel and the N-pole circuit breaker and a live wire circuit breaker are synchronously powered off are overcome; fourthly, an energy storage mechanism is additionally arranged in the live line breaker, the N-pole breaker is not provided with the energy storage mechanism, when the breaker is required to be switched on to perform a closing action, a moving contact movement mechanism of the live line breaker is blocked by the energy storage mechanism, and a moving contact of the N-pole breaker is not blocked, so that the power supply is switched on before the live line breaker, the purpose of switching on the N-pole breaker firstly is achieved, the accuracy of switching on and switching off the N-pole breaker firstly is improved, the cost is low, and the universality is strong; fifthly, the distance S between the tripping link rod of the N-pole circuit breaker and the moving contact movement mechanism of the live wire circuit breaker is normalized through a formula, the distance S can be adjusted according to the number of the live wire circuit breakers, and the accuracy and the safety of linkage between the N-pole circuit breaker and the live wire circuit breakers are guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a front view of the N-pole circuit breaker without an arc extinguishing device according to the present invention;
fig. 2 is a schematic structural diagram of the single-phase N-pole circuit breaker without an arc extinguishing device according to the present invention;
fig. 3 is an exploded view of the single-phase N-pole circuit breaker without an arc extinguishing device according to the present invention;
fig. 4 is a schematic structural diagram of the live wire circuit breaker of the present invention;
fig. 5 is a schematic structural view of the driving wheel of the contact mechanism of the N-pole circuit breaker of the present invention;
fig. 6 is a schematic view of the connection structure of the driving wheel and the handle coupling shift lever of the contact mechanism of the N-pole circuit breaker of the present invention;
fig. 7 is an exploded view of the three-phase N-pole circuit breaker without an arc extinguishing device according to the present invention;
fig. 8 is a schematic view of the connection structure of the three-phase N-pole circuit breaker without an arc extinguishing device according to the present invention.
Fig. 9 is a schematic diagram of the positions of the width of the tripping latch hook and the over travel of the contact according to the present invention.
Reference numerals: 1. an N-pole breaker; 2. a live line breaker; 3. an N-pole breaker output terminal; 4. an N-pole breaker input terminal; 5. a static contact of the N-pole circuit breaker; 6. a moving contact of the N-pole breaker; 7. an N-pole breaker tripping link rod; 8. a drive arm; 9. a U-shaped connecting rod; 10. a contact mechanism driving wheel of the N-pole breaker; 11. the N pole breaker tripping striker; 12. a moving contact motion mechanism of the N pole; 13. a N-pole breaker tripping lever spring; 14. a live line breaker trip link; 15. a live line breaker handle drive wheel; 16. a handle is coupled with a deflector rod; 17. a live line breaker trip lever spring; 18. a moving contact motion mechanism of the live line breaker; 19. A live line breaker energy storage stop; 20. a sector groove; 21. and (5) shifting blocks.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a circuit breaker that arc extinguishing device is not taken to N utmost point, live wire circuit breaker dropout link rod and the mutual trigger dropout design of N utmost point circuit breaker dropout link rod formation alternately mutual insertion structure guarantee that N utmost point circuit breaker contact does not produce electric arc, improve the accuracy that N utmost point circuit breaker closed before, with low costs, the commonality is strong.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-4, the present invention provides an N-pole circuit breaker without an arc extinguishing device, which comprises an N-pole circuit breaker 1 and a live line circuit breaker 2 disposed adjacent thereto, the two sides of the N-pole breaker 1 are respectively provided with an N-pole breaker output terminal 3 and an N-pole breaker input terminal 4, the N-pole breaker 1 is internally provided with an N-pole breaker static contact 5 and an N-pole breaker moving contact 6, an N-pole breaker tripping striker 11, an N-pole breaker tripping link 7, an N-pole breaker tripping lever spring 13, an N-pole moving contact motion mechanism 12, a driving arm 8, a U-shaped connecting rod 9 and an N-pole breaker contact mechanism driving wheel 10 are arranged in the N-pole breaker 1, the driving arm 8, the U-shaped connecting rod 9 and the N-pole breaker contact mechanism driving wheel 10 are connected in sequence, the driving arm 8, the N-pole breaker tripping link 7 and the N-pole breaker tripping lever spring 13 are connected to the N-pole moving contact motion mechanism 12; the N-pole breaker tripping lever spring 13 is arranged on one side of the N-pole breaker tripping link 7;
a live line breaker tripping link 14, a live line breaker handle driving wheel 15, a handle coupling shift lever 16, a live line breaker tripping lever spring 17 and a live line breaker moving contact motion mechanism 18 are arranged in the live line breaker 2, and an adjacent live line breaker energy storage stop block 19 is arranged at the back of the adjacent live line breaker moving contact motion mechanism 18;
the live wire circuit breaker tripping link 14 and the N-pole circuit breaker tripping link 7 form a cross and mutual insertion structure, the live wire circuit breaker tripping link 14 is inserted into the N-pole circuit breaker 1, the N-pole circuit breaker tripping link 7 is inserted into the live wire circuit breaker 2, one end of the N-pole circuit breaker tripping link 11 is connected with an electromagnetic trip 22, the other end of the N-pole circuit breaker tripping link is closely arranged close to the live wire circuit breaker tripping link 14 at a set interval, the adjacent live wire circuit breaker tripping link 14 can be inserted into the end part, bent upwards, on the right side of the N-pole circuit breaker tripping link, and the end part on the left side of the N-pole circuit breaker tripping link is connected with the electromagnetic trip 22;
the handle coupling deflector rod 16 connects the live wire breaker handle driving wheel 15 and the N-pole breaker contact mechanism driving wheel 10 in series, and the N-pole breaker contact mechanism driving wheel 10 is provided with a limiting structure for limiting the rotation angle of the handle coupling deflector rod 16.
The torsion of the N-pole circuit breaker tripping lever spring 13 is greater than the torsion of the live wire circuit breaker tripping lever spring 17, in this embodiment, the diameter of the steel wire of the N-pole circuit breaker tripping lever spring 13 is greater than the diameter of the steel wire of the live wire circuit breaker tripping lever spring 17, and the strengths of the steel wires of the N-pole circuit breaker tripping lever spring 13 and the live wire circuit breaker tripping lever spring 17 are the same; the live wire breaker energy storage mechanism 19 is an energy storage stop block, and the N-pole breaker 1 is not internally provided with an energy storage mechanism.
As shown in fig. 5-6, the limiting structure is a sector groove 20, the sector groove 20 is disposed inside the N-pole breaker contact mechanism driving wheel 10, a shifting block 21 is disposed on the handle coupling shifting lever 16, the shifting block 21 is disposed inside the sector groove 20, and a free rotation angle of the shifting block 21 in the sector groove 20 is slightly larger than a closing and opening-dropping rotation angle of the live wire breaker handle driving wheel 15.
One end of the handle coupling deflector rod 16 is of a non-circular structure and is connected with the live wire breaker handle driving wheel 15, and the other end of the handle coupling deflector rod 16 is of a circular shaft structure and is connected with the N-pole breaker contact mechanism driving wheel 10; one end of the N-pole breaker tripping link 7 extends to be provided with the tail end of a tripping and tripping motion track of the moving contact motion mechanism 18 of the live line breaker.
As shown in fig. 7 to 9, a plurality of live line breakers 2 are provided at one side of the N-pole breaker 1, and two adjacent live line breakers 2 are connected together through a live line breaker tripping link 14; if the distance between the tripping link 7 of the N-pole circuit breaker and the moving contact movement mechanism 18 of the live-wire circuit breaker is S, S satisfies the following formula:
S＞(Pi-1)A+(Bfire(s)+CFire(s))-(Bn+Cn)，
Wherein, PiRepresenting the number of live line breakers 2, a representing the non-contacting free gap between two adjacent live line breaker trip links 14, BFire(s)Indicating the width of the live wire breaker tripping latch hook, CFire(s)Indicating contact overtravel of the live line breaker 2, BnIndicating the width of the tripping latch hook, C, of the N-pole circuit breaker 1nRepresents the contact overtravel of the N-pole circuit breaker 1; wherein if the N-pole breaker and the live line breaker are identical in structure, (B)Fire(s)+CFire(s))-(Bn+Cn)＝0，S＞(Pi-1)A。
In a specific implementation process, after the N-pole breaker tripping link 7 of the N-pole breaker 1 extends into the adjacent live-wire breaker 2, when the contact of the live-wire breaker 2 is separated from contact, the N-pole breaker tripping link 7 is not touched until the moving contact motion structure 18 of the live-wire breaker 2 moves to a point close to the farthest point, so as to trigger the contact tripping separation of the N-pole breaker 1, and at this time, the live-wire breaker 2 is already in a power-off state, so that no moving contact or static contact of the N-pole breaker 1 is caused to generate an arc; a fan-shaped groove 20 is arranged in an N-pole breaker contact mechanism driving wheel 10, a live wire breaker handle driving wheel 15 is connected in series by a handle coupling driving rod 16 with one end in a non-circular structure to ensure that adjacent live wire breakers 2 at all levels are linked together, the other end of the handle coupling driving rod 16 is in a circular shaft structure, a shifting block 21 is arranged on the surface of a circular shaft, the end of the circular shaft is arranged in the N-pole breaker contact mechanism driving wheel 10 of an N-pole breaker 1, the shifting block 21 is arranged in the fan-shaped groove 20 in the N-pole breaker contact mechanism driving wheel 10, the N-pole breaker 1 is synchronous with the live wire breaker 2 during closing, the closing action of the N-pole breaker contact mechanism driving wheel 10 is shifted by the shifting block 21 on the handle coupling driving rod 16 in a clockwise rotating direction to drive a U-shaped connecting rod 9 and an N-pole moving contact movement mechanism 12 to synchronously rotate clockwise, the sector angle of the sector groove 20 except for the space occupied by the shifting block 21 is the angle that the shifting block 21 can freely rotate in the sector groove 20, and the turning angle range of the closing and opening of the handle driving wheel 15 of the adjacent live wire breaker is smaller than the angle that the shifting block 21 can freely rotate in the sector groove 20, so that the free rotation of the shifting block 21 on the handle coupling shifting rod 16 in the sector groove 20 is not interfered when the handle driving wheel 15 of the adjacent live wire breaker is opened and is rotated anticlockwise, the N-pole breaker 1 and the live wire breaker can not be synchronously opened, and the obvious back-breaking effect of the N-pole breaker 1 is obtained.
The utility model provides a circuit breaker of arc extinguishing device is not taken to N utmost point, firstly, adopt N utmost point circuit breaker dropout link rod and live wire circuit breaker dropout link rod to form alternately inserting structure, constitute the design of triggering the dropout each other, after the moving contact of live wire circuit breaker breaks away from the contact, and when the moving contact motion of live wire circuit breaker reached and is about to arrive the terminal point, percussion N utmost point circuit breaker dropout link rod action again, guaranteed that the disconnection of N utmost point circuit breaker contact and the disconnection of adjacent live wire circuit breaker contact produce obvious time difference, thereby reach the purpose that N utmost point circuit breaker does not produce electric arc; secondly, through the arrangement that the torsion of a tripping lever spring of the N-pole circuit breaker is larger than that of a tripping lever spring of the live wire circuit breaker, the tripping sensitivity of the adjacent live wire circuit breakers is far higher than that of the N-pole circuit breaker, and when strong vibration is encountered, the live wire circuit breaker can trip and trip before the N-pole circuit breaker, so that the anti-vibration capability of the N-pole circuit breaker is far higher than that of the live wire circuit breaker; thirdly, a fan-shaped groove is formed in a driving wheel of the contact mechanism of the N-pole circuit breaker, a shifting block is arranged on a shifting rod of a handle coupling shaft, and the shifting block only has a certain free rotation angle space in the fan-shaped groove, so that the power failure of the N-pole circuit breaker is ensured, and the defects that the handles of the traditional multi-pole circuit breaker are connected in parallel and the N-pole circuit breaker and a live wire circuit breaker are synchronously powered off are overcome; fourthly, an energy storage mechanism is additionally arranged in the live line breaker, the N-pole breaker is not provided with the energy storage mechanism, when the breaker is required to be switched on to perform a closing action, a moving contact movement mechanism of the live line breaker is blocked by the energy storage mechanism, and a moving contact of the N-pole breaker is not blocked, so that the power supply is switched on before the live line breaker, the purpose of switching on the N-pole breaker firstly is achieved, the accuracy of switching on and switching off the N-pole breaker firstly is improved, the cost is low, and the universality is strong; fifthly, the distance S between the tripping link rod of the N-pole circuit breaker and the moving contact movement mechanism of the live wire circuit breaker is normalized through a formula, the distance S can be adjusted according to the number of the live wire circuit breakers, and the accuracy and the safety of linkage between the N-pole circuit breaker and the live wire circuit breakers are guaranteed.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. A circuit breaker with an N pole and no arc extinguishing device is characterized by comprising an N pole circuit breaker (1) and a live wire circuit breaker (2) arranged adjacent to the N pole circuit breaker (1), wherein an N pole circuit breaker tripping impact rod (11), an N pole circuit breaker tripping link rod (7), an N pole circuit breaker tripping lever spring (13), an N pole moving contact motion mechanism (12), a driving arm (8), a U-shaped link rod (9) and an N pole circuit breaker contact mechanism driving wheel (10) are arranged inside the N pole circuit breaker (1), the driving arm (8), the U-shaped link rod (9) and the N pole circuit breaker contact mechanism driving wheel (10) are sequentially connected, and the driving arm (8), the N pole circuit breaker tripping link rod (7) and the N pole circuit breaker tripping lever spring (13) are connected onto the N pole moving contact motion mechanism (12);
a live wire breaker tripping link rod (14), a live wire breaker handle driving wheel (15), a handle coupling shift lever (16), a live wire breaker tripping lever spring (17) and a live wire breaker moving contact movement mechanism (18) are arranged in the live wire breaker (2), and a live wire breaker energy storage mechanism (19) is arranged on the live wire breaker moving contact movement mechanism (18);
the live wire circuit breaker tripping device comprises a live wire circuit breaker tripping link rod (14) and an N-pole circuit breaker tripping link rod (7), wherein the live wire circuit breaker tripping link rod (14) and the N-pole circuit breaker tripping link rod (7) form a cross mutual insertion structure, the live wire circuit breaker tripping link rod (14) is inserted into the N-pole circuit breaker (1), the N-pole circuit breaker tripping link rod (7) is inserted into the live wire circuit breaker (2), one end of an N-pole circuit breaker tripping collision rod (11) is connected with an electromagnetic tripping device (22), and the other end of the N-pole circuit breaker tripping collision rod and;
the handle coupling deflector rod (16) connects the live wire breaker handle driving wheel (15) and the N-pole breaker contact mechanism driving wheel (10) in series, and the N-pole breaker contact mechanism driving wheel (10) is provided with a limiting structure for limiting the rotation angle of the handle coupling deflector rod (16).
2. The N-pole circuit breaker without an arc extinguishing device according to claim 1, wherein the limiting structure is a sector groove (20), the sector groove (20) is arranged inside the N-pole circuit breaker contact mechanism driving wheel (10), a shifting block (21) is arranged on the handle coupling shifting rod (16), the shifting block (21) is arranged inside the sector groove (20), and the free rotation angle of the shifting block (21) in the sector groove (20) is slightly larger than the closing and opening rotation angle of the live line circuit breaker handle driving wheel (15).
3. The N-pole circuit breaker without an arc extinguishing device according to claim 1, wherein one end of the handle coupling rod (16) is of a non-circular structure and is connected with the live breaker handle driving wheel (15), and the other end of the handle coupling rod (16) is of a circular structure and is connected with the N-pole breaker contact mechanism driving wheel (10).
4. The N-pole circuit breaker without an arc extinguishing device according to claim 1, wherein one end of the N-pole breaker tripping link (7) extends to set the end of the tripping and tripping movement track of the moving contact movement mechanism (18) of the live breaker.
5. An N-pole arc extinguishing device-free circuit breaker according to claim 4, characterized in that the live circuit breaker (2) is provided in plurality, a plurality of live circuit breakers (2) are provided at one side of the N-pole circuit breaker (1), and adjacent two live circuit breakers (2) are connected together through the live circuit breaker tripping link (14).
6. The N-pole circuit breaker without an arc extinguishing device according to claim 5, wherein, assuming that the distance between the tripping link (7) of the N-pole circuit breaker and the moving contact moving mechanism (18) of the live circuit breaker is S, S satisfies the following formula:
S＞(Pi-1)A+(Bfire(s)+CFire(s))-(Bn+Cn)，
Wherein, PiRepresenting the number of live line circuit breakers (2), A representing the non-contacting free gap between two adjacent live line circuit breaker tripping links (14), BFire(s)Indicating the width of the live wire breaker tripping latch hook, CFire(s)Indicating contact overtravel of the live line breaker (2), BnIndicating the width of the tripping latch hook of the N-pole circuit breaker (1), CnIndicating the contact overtravel of the N-pole breaker (1).
7. An N-pole arc extinguishing device-free circuit breaker according to claim 1, characterized in that the torsion force of the N-pole breaker trip lever spring (13) is greater than the torsion force of the live breaker trip lever spring (17).
8. An N-pole arc extinguishing device-free circuit breaker according to claim 7, characterized in that the wire diameter of the N-pole breaker trip lever spring (13) is larger than the wire diameter of the hot breaker trip lever spring (17), and the wire strength of the N-pole breaker trip lever spring (13) and the hot breaker trip lever spring (17) are the same.
9. An N-pole circuit breaker without an arc extinguishing device according to claim 1, characterized in that the live circuit breaker energy storage mechanism (19) is an energy storage block, and no energy storage mechanism is arranged inside the N-pole circuit breaker (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920798304.5U CN209859898U (en) | 2019-05-30 | 2019-05-30 | N-pole circuit breaker without arc extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920798304.5U CN209859898U (en) | 2019-05-30 | 2019-05-30 | N-pole circuit breaker without arc extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209859898U true CN209859898U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920798304.5U Active CN209859898U (en) | 2019-05-30 | 2019-05-30 | N-pole circuit breaker without arc extinguishing device |
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| Country | Link |
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| CN (1) | CN209859898U (en) |
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- 2019-05-30 CN CN201920798304.5U patent/CN209859898U/en active Active
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Address after: 301600 Dongtou, No.6 Road, Jinghai Economic Development Zone, Tianjin Patentee after: Tianjin jiameite Electric Co.,Ltd. Address before: 301600 east end of No.6 Road, Jinghai Economic Development Zone, Tianjin Patentee before: TIANJIN JIAMEITE ELECTRICAL EQUIPMENT Co.,Ltd. |