CN211929415U - Back-up protection release - Google Patents
Back-up protection release Download PDFInfo
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- CN211929415U CN211929415U CN202020610083.7U CN202020610083U CN211929415U CN 211929415 U CN211929415 U CN 211929415U CN 202020610083 U CN202020610083 U CN 202020610083U CN 211929415 U CN211929415 U CN 211929415U
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- armature
- bracket
- placing frame
- pin shaft
- protection
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Abstract
The utility model belongs to the technical field of the circuit breaker technique and specifically relates to a reserve protection release. A back-up protection release comprises a bracket, an armature and an iron core, and is characterized in that: the front part of the bracket is connected with the armature by a pin shaft, and a counter-force spring is sleeved on the pin shaft between the bracket and the armature; an iron core is arranged on the bracket positioned at the rear side of the armature. Compared with the prior art, the backup protection tripper adopts the structural design of backup protection and coil installation modularization, integrates a backup protection bracket and a magnetic flux coil, gives out a mechanism movement space, installs the backup protection tripper on the B phase of the circuit breaker, and realizes that each phase of the circuit breaker has the function of large-current short-circuit protection.
Description
Technical Field
The utility model belongs to the technical field of the circuit breaker technique and specifically relates to a reserve protection release.
Background
The electronic plastic casing circuit breaker is a switch for low-voltage distribution network, and can protect the circuit and equipment from damage of overload, short circuit and other faults, so as to ensure the safety of power network and equipment. However, when extra large current passes through the circuit, the electronic controller cannot control the circuit breaker to rapidly break the fault. Therefore, the conventional electronic molded case circuit breaker is generally additionally provided with an electromagnetic quick action mechanism, so that the circuit breaker can quickly break large current, and the safety of a circuit is guaranteed.
The electromagnetic quick action mechanism in the prior art generally comprises a support, an armature, an iron core, a pin shaft and a reaction spring, wherein the support and a magnetic yoke are fixedly connected with a conductive system, the armature is installed on the support through the pin shaft, the reaction spring is sleeved on the pin shaft, and two ends of the reaction spring are respectively connected with the armature and the support. After the device is installed, the armature can rotate in a reciprocating mode by taking the pin shaft as the center, when the circuit passes through a large current, the armature is attracted by the magnetic yoke of the release, the traction rod is hit by the armature, and the release and fault breaking of the mechanism are achieved.
However, the prior art has the following defects: the structure is complex, the number of parts is large, and the assembly efficiency is low due to no modularized design; in consideration of installation and electromagnetic influence, the electromagnetic quick-acting mechanism bracket is usually made of copper materials or stainless steel materials, and the production cost is relatively high.
Disclosure of Invention
The utility model discloses an overcome prior art not enough, provide a reserve protection release, adopt reserve protection and coil installation modular structural design, with reserve protection with support and magnetic flux coil integration, give way mechanism motion space, at circuit breaker B looks installation reserve protection release, realize that each looks of circuit breaker all possesses heavy current short-circuit protection's function.
In order to realize the purpose, the back-up protection release comprises a bracket, an armature and an iron core, and is characterized in that: the front part of the bracket is connected with the armature by a pin shaft, and a counter-force spring is sleeved on the pin shaft between the bracket and the armature; an iron core is arranged on the bracket positioned at the rear side of the armature.
The middle part of the bracket is provided with a magnetic through groove; the front part of the bracket is connected with an armature placing frame which is in a U-shaped frame structure, a spring clamping groove is arranged on the bracket positioned at the rear side of the middle part of the armature placing frame, and limiting blocks are arranged on the brackets at the rear parts of the left side and the right side of the armature placing frame; a bracket iron core groove is arranged on the bracket above the armature placing frame; and a pin shaft slot hole is formed in the bottom of the armature placing frame.
The armature is of an I-shaped structure, an armature upper boss is arranged on the back of the top of the armature, the bottom of the armature is connected with the armature placing frame of the support through a pin shaft, an armature lower boss is arranged on the back of the bottom of the armature, and a beam of the armature is located on the front side of the counter force spring.
One end of the counter-force spring is abutted to the spring clamping groove of the support, and the other end of the counter-force spring is abutted to the beam of the armature.
Compared with the prior art, the utility model, a reserve protection release is provided, adopt reserve protection and coil installation modular structural design, with reserve protection with support and magnetic flux coil integration, give way mechanism motion space, at circuit breaker B looks installation reserve protection release, realize that each looks of circuit breaker all possesses the function of heavy current short-circuit protection.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a bottom view of the structure of the present invention.
Fig. 3 and 4 are partial sectional views of the structure of the present invention.
Fig. 5 is a schematic view of a stent structure.
Fig. 6 is a partial cross-sectional view of a stent.
Fig. 7 is a schematic diagram of the present invention used in a circuit breaker.
Referring to fig. 1 to 7, 1 is a bracket, 11 is a limiting block, 12 is a spring clamping groove, 13 is a bracket iron core groove, 14 is a pin shaft groove hole, 15 is a magnetic flux groove, 16 is an armature placing frame, 2 is a pin shaft, 3 is an armature, 31 is an armature lower boss, 32 is an armature upper boss, 33 is a beam, 4 is an iron core, 5 is a reaction spring, and 6 is a traction rod.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 6, a pin 2 is used to connect the armature 3 at the front of the bracket 1, and a reaction spring 5 is sleeved on the pin 2 between the bracket 1 and the armature 3; the iron core 4 is arranged on the bracket 1 at the rear side of the armature 3.
The middle part of the bracket 1 is provided with a magnetic through groove 15; the front part of the support 1 is connected with an armature placing frame 16, the armature placing frame 16 is in a U-shaped frame structure, a spring clamping groove 12 is arranged on the support 1 positioned on the rear side of the middle part of the armature placing frame 16, and limiting blocks 11 are arranged on the supports 1 on the rear parts of the left side and the right side of the armature placing frame 16; a bracket iron core groove 13 is arranged on the bracket 1 above the armature placing frame 16; a pin shaft slot hole 14 is arranged at the bottom of the armature placing frame 16.
The armature 3 is in an I-shaped structure, an armature upper boss 32 is arranged on the back of the top of the armature 3, the bottom of the armature 3 is connected with the armature placing frame 16 of the support 1 through a pin shaft 2, an armature lower boss 31 is arranged on the back of the bottom of the armature 3, and a beam 33 of the armature 3 is positioned on the front side of the counter force spring 5.
One end of the reaction spring 5 abuts against the spring slot 12 of the bracket 1, and the other end of the reaction spring 5 abuts against the beam 33 of the armature 3.
Three phases of the backup protection tripper are all provided with electromagnetic tripping actuating mechanisms, and each phase of the circuit breaker has a short-circuit current protection function; the bracket 1 is used as a magnetic flux coil mounting bracket at the same time; the armature 3 is arranged on the bracket 1 through a pin shaft 2; the counter-force spring 5 is sleeved on the pin shaft 2, one end of the counter-force spring is arranged in the spring clamping groove 12, and the other end of the counter-force spring is connected with the cross beam 33 of the armature 3; the core 4 is mounted in the bracket core slot 13.
The armature lower boss 31 is clamped on the limiting block 11 of the bracket 1 to realize the motion limiting of the armature 3; one end of the counter force spring 5 is clamped in the spring clamping groove 12 to be used as an installation groove of the counter force spring 5; a bracket iron core slot 13 of the bracket 1 is used as an installation slot of the iron core 4; a pin shaft slot hole 14 at the bottom of the armature placing frame 16 is used as a mounting hole of the pin shaft 2; the flux groove 15 of the bracket 1 serves as a mounting groove for the flux coil.
As shown in fig. 7, when a large short-circuit current occurs in the line, the iron core 4 attracts the armature 3 under the action of a magnetic field force, the armature 3 overturns against the counter force of the counter spring 5, the upper lug boss 32 of the armature strikes the draw bar 6, and the draw bar 6 overturns to release the circuit breaker, so that the short-circuit current is cut off. After the short circuit current is cut off, the 3 is reset under the action of the reaction spring 5.
The backup protection and coil installation modularized structural design is adopted, a backup protection bracket and a magnetic flux coil are integrated, a mechanism movement space is made out, and a backup protection release is installed on a circuit breaker B phase, so that each phase of the circuit breaker has a function of high-current short-circuit protection.
Claims (4)
1. A back-up protection release comprises a bracket, an armature and an iron core, and is characterized in that: the front part of the bracket (1) is connected with the armature (3) by a pin shaft (2), and the pin shaft (2) between the bracket (1) and the armature (3) is sleeved with a counter-force spring (5); an iron core (4) is arranged on the bracket (1) positioned at the rear side of the armature (3).
2. A backup protection trip unit according to claim 1, wherein: a magnetic through groove (15) is formed in the middle of the bracket (1); the front part of the support (1) is connected with an armature placing frame (16), the armature placing frame (16) is of a U-shaped frame structure, a spring clamping groove (12) is arranged on the support (1) positioned on the rear side of the middle part of the armature placing frame (16), and limiting blocks (11) are arranged on the supports (1) on the rear parts of the left side and the right side of the armature placing frame (16); a bracket iron core groove (13) is arranged on the bracket (1) above the armature placing frame (16); a pin shaft slot hole (14) is arranged at the bottom of the armature placing frame (16).
3. A backup protection trip unit according to claim 1, wherein: armature (3) be I shape structure, the back at armature (3) top is equipped with armature and goes up boss (32), armature (3) bottom is connected with armature rack (16) of support (1) through round pin axle (2), the back of armature (3) bottom is equipped with armature lower boss (31) to crossbeam (33) of armature (3) are located the front side of reaction spring (5).
4. A backup protection trip unit according to claim 1, wherein: one end of the reaction spring (5) is abutted to the spring clamping groove (12) of the bracket (1), and the other end of the reaction spring (5) is abutted to the cross beam (33) of the armature (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020610083.7U CN211929415U (en) | 2020-04-22 | 2020-04-22 | Back-up protection release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020610083.7U CN211929415U (en) | 2020-04-22 | 2020-04-22 | Back-up protection release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211929415U true CN211929415U (en) | 2020-11-13 |
Family
ID=73328642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020610083.7U Active CN211929415U (en) | 2020-04-22 | 2020-04-22 | Back-up protection release |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211929415U (en) |
-
2020
- 2020-04-22 CN CN202020610083.7U patent/CN211929415U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |