CN210120077U - Synchronizing shaft assembly and circuit breaker - Google Patents
Synchronizing shaft assembly and circuit breaker Download PDFInfo
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- CN210120077U CN210120077U CN201920942914.8U CN201920942914U CN210120077U CN 210120077 U CN210120077 U CN 210120077U CN 201920942914 U CN201920942914 U CN 201920942914U CN 210120077 U CN210120077 U CN 210120077U
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- synchronous
- contact arm
- shaft
- circuit breaker
- synchronizing shaft
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Abstract
The utility model discloses a synchronizing shaft assembly, including synchronous arm, axle bed and synchronizing shaft of touching, the pot head of synchronous arm is established just can be at the axle bed internal rotation in the axle bed, the other end of synchronous arm is provided with movable groove, install swing joint spare on the movable groove, the synchronizing shaft is worn to be located synchronous arm of touching, be provided with the mounting hole on the axle bed, synchronous arm with the quantity of axle bed all equals with the number of poles of circuit breaker. The utility model discloses a synchronizing shaft subassembly is when using, and the axle bed is fixed on the support of circuit breaker, and the swing joint spare of every group synchronous contact arm and a plurality of vacuum interrupter of circuit breaker move the end and correspond and be connected, when the circuit breaker carries out combined floodgate or separating brake operation, because the restraint of synchronizing shaft, synchronous contact arm has the same motion state, guarantees that a plurality of vacuum interrupter of circuit breaker move the end can synchronous motion to reach the effect of adjustment circuit breaker combined floodgate synchronism and separating brake synchronism.
Description
Technical Field
The utility model relates to a distribution equipment technical field, concretely relates to synchronizing shaft subassembly and circuit breaker.
Background
In recent years, with the rapid development of domestic distribution automation, many switch manufacturers mostly adopt a design scheme of three single-phase direct-driven permanent magnet mechanisms for realizing the rapid opening of the circuit breaker, the design structure is simple, the number of circuit breaker parts is small, only one transmission part is provided, and due to the fact that the permanent magnet mechanisms are matched with the motion characteristics of the vacuum arc-extinguishing chamber, the rapid opening time can be provided, and the opening and closing capacity of the circuit breaker can be improved. However, most of the circuit breakers with the design have the problem that the synchronization of closing and the synchronization of opening are not easy to adjust, the transmission design of the existing circuit breakers adopts a four-bar structure, namely, a driving shaft rotates to drive a moving part through a connecting lever to realize the closing and opening actions, and the synchronization of the closing and the opening of the circuit breaker is naturally in a synchronous state. However, such a design has a complicated structure and many transmission components, and is difficult to face the problem of the rapid switching-off capability proposed by the current distribution automation.
Disclosure of Invention
Not enough to prior art, the utility model provides a synchronizing shaft subassembly for solve the not good problem of adjusting of circuit breaker combined floodgate synchronism and separating brake synchronism.
The content of the utility model is as follows:
the utility model provides a synchronous shaft assembly, includes synchronous contact arm, axle bed and synchronizing shaft, the pot head of synchronous contact arm is established just can rotate with the axle bed is relative in the axle bed, the other end of synchronous contact arm is provided with movable groove, install movable connecting piece on the movable groove, the synchronizing shaft wears to be located synchronous contact arm, be provided with the mounting hole on the axle bed, synchronous contact arm with the quantity of axle bed all equals with the utmost point number of circuit breaker.
Preferably, the number of the synchronous contact arms and the number of the shaft seats are 3, each group of synchronous contact arms comprises a first contact arm and a second contact arm, and the first contact arm and the second contact arm are respectively arranged at two ends of the same group of shaft seats.
Preferably, the first arm of touching with the second touches arm structure mirror symmetry, the first arm of touching includes the connector, the one end of connector is provided with the lantern ring, the activity groove sets up the other end of connector, the lantern ring cover is established in the axle bed.
Preferably, the lantern ring is cylindrical, a polygonal inner hole is formed in the lantern ring, and the appearance of the synchronizing shaft is matched with the inner hole.
Further, the section of the inner hole is square, regular hexagon or regular octagon.
Preferably, the synchronizing shaft is an epoxy cylinder.
Preferably, the movable connecting piece comprises a roller and a pin shaft, the roller is arranged on the movable groove, and the pin shaft penetrates through the roller.
Preferably, the movable connecting piece comprises a bolt and a nut, the bolt is arranged in the movable groove in a penetrating mode, and the nut is installed on the bolt.
Preferably, a through hole is formed in the shaft seat, a jackscrew is arranged in the through hole, annular grooves are formed in the first contact arm and the second contact arm, and the jackscrew is inserted into the annular grooves.
The utility model also provides a circuit breaker for solve the not good problem of adjustment of circuit breaker combined floodgate synchronism and separating brake synchronism.
The utility model provides a circuit breaker, includes the support and all installs permanent magnetic mechanism, insulating pull rod, vacuum interrupter and foretell synchronizing shaft subassembly on the support, permanent magnetic mechanism passes through insulating pull rod with vacuum interrupter's the end that moves is connected, the axle bed of synchronizing shaft subassembly is installed on the support, every group of synchronizing shaft touches the arm in step and passes through swing joint connects the end that moves at the vacuum interrupter who corresponds.
The utility model has the advantages that:
the utility model discloses a synchronizing shaft subassembly is when using, and the axle bed is fixed on the support of circuit breaker, and the swing joint spare of each group synchronous contact arm corresponds with a plurality of vacuum interrupter moving ends of circuit breaker and is connected, and when the circuit breaker carried out combined floodgate or separating brake operation, because the restraint of synchronizing shaft, synchronous contact arm had the same motion state, guaranteed that a plurality of vacuum interrupter moving ends of circuit breaker can the synchronous motion to reach the effect of adjustment circuit breaker combined floodgate synchronism and separating brake synchronism;
compare with the circuit breaker structure of traditional four-bar linkage, the utility model discloses a synchronizing shaft subassembly realizes closing in the same period and the separating brake in the same period of circuit breaker, can save drive shaft and connecting lever moreover, reduces the volume of circuit breaker.
Drawings
Fig. 1 is a partial side view of a circuit breaker according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a synchronizing shaft assembly according to an embodiment of the present invention;
FIG. 3 is a left side perspective view of the synchronizing shaft assembly in accordance with an embodiment of the present invention;
FIG. 4 illustrates an exploded view of the synchronizing shaft assembly in accordance with an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first contact arm according to an embodiment of the present invention.
Detailed Description
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Referring to fig. 1, the circuit breaker disclosed in this embodiment includes a bracket 1, and a permanent magnetic mechanism 2, an insulating pull rod 3, a vacuum arc-extinguishing chamber 4 and a synchronizing shaft assembly 5 which are all mounted on the bracket 1, where the permanent magnetic mechanism 2 is connected to a moving end 4-1 of the vacuum arc-extinguishing chamber 4 through the insulating pull rod 3, and when working, the permanent magnetic mechanism 2 drives the moving end 4-1 of the vacuum arc-extinguishing chamber 4 to move through the insulating pull rod 3.
Referring to fig. 2 and fig. 3, the synchronizing shaft assembly 5 includes a synchronous contact arm 5-1, a shaft seat 5-2 and a synchronizing shaft 5-3, one end of the synchronous contact arm 5-1 is sleeved in the shaft seat 5-2 and can rotate in the shaft seat 5-2, the other end of the synchronous contact arm 5-1 is provided with a movable groove 5-4, the movable groove 5-4 is provided with a movable connecting piece 5-5, the synchronizing shaft 5-3 is inserted in the synchronous contact arm 5-1, the shaft seat 5-2 is provided with a mounting hole 5-6, the mounting hole 5-6 is a threaded hole, the shaft seat 5-2 of the synchronizing shaft 5-3 assembly 5 is mounted on the bracket 1 through the mounting hole 5-6 and a screw, the number of the synchronous contact arm 5-1 and the number of the shaft seat 5-2 are equal to the number of poles of the circuit breaker, which is exemplified by, the number of poles of the circuit breaker is three, the number of the synchronous contact arms 5-1 and the number of the shaft seats 5-2 are 3, each group of the synchronous contact arms 5-1 of the synchronous shaft 5-3 is connected with the corresponding movable end 4-1 of the vacuum arc-extinguishing chamber 4 through the movable connecting piece 5-5, when the circuit breaker performs switching-on or switching-off operation, the synchronous contact arms 5-1 have the same motion state due to the constraint of the synchronous shaft 5-3, and the movable end 4-1 of the vacuum arc-extinguishing chamber 4 is connected with the synchronous contact arms 5-1 and is limited by the synchronous contact arms 5-1, so that the motion between the movable ends 4-1 of the vacuum arc-extinguishing chambers 4 can be prevented from having time difference, the movable ends 4-1 of the vacuum arc-extinguishing chambers 4 of the circuit breaker can move synchronously, and the effect of adjusting the switching-on synchronism and switching-off synchronism of, compared with the traditional four-bar circuit breaker structure, the circuit breaker can realize synchronous closing and synchronous opening through the synchronous shaft 5-3 assembly 5, and a driving shaft and a connecting lever can be omitted, so that the size of the circuit breaker is reduced.
Referring to fig. 1, an operation hole 6 is formed in a side plate of the circuit breaker and located at one end of the synchronizing shaft 5-3, and when the circuit breaker is repaired or maintained, the synchronizing shaft 5-3 can be operated through the operation hole 6, so that manual switching-on or manual switching-off is realized.
Referring to fig. 4 and 5, each group of synchronous contact arms 5-1 includes a first contact arm 5-1-1 and a second contact arm 5-1-2, and the first contact arm 5-1-1 and the second contact arm 5-1-2 are respectively disposed at two ends of the same group of shaft seats 5-2. The first contact arm 5-1-1 and the second contact arm 5-1-2 are in mirror symmetry in structure, the first contact arm 5-1-1 comprises a connector 5-1-11, one end of the connector 5-1-11 is provided with a lantern ring 5-1-12, a movable groove 5-4 is arranged at the other end of the connector 5-1-11, and the lantern ring 5-1-12 is sleeved in the shaft seat 5-2, so that the contact area between the first contact arm 5-1-1 and the shaft seat 5-2 can be increased, the connection stability between the first contact arm 5-1-1 and the shaft seat 5-2 is improved, and the first contact arm 5-1-1 and the second contact arm 5-1-2 are prevented from shaking along the axial direction. The lantern ring 5-1-12 is cylindrical, so that the synchronous contact arm 5-1 and the shaft seat 5-2 can rotate relatively, the lantern ring 5-1-12 is provided with a polygonal inner hole 5-1-13, the appearance of the synchronous shaft 5-3 is matched with the inner hole 5-1-13, the relative rotation between the synchronous shaft 5-3 and the synchronous contact arm 5-1 can be avoided, and the effect of restraining a plurality of groups of synchronous contact arms 5-1 through the synchronous shaft 5-3 is achieved. Furthermore, the section of the inner hole 5-1-13 is square, regular hexagon or regular octagon, the shape is regular, and the processing is easy. The synchronizing shaft 5-3 adopts an epoxy cylinder, the epoxy cylinder has high insulating strength, the electric leakage of the synchronizing shaft assembly 5 can be avoided, the maintenance safety of the circuit breaker is improved, the mechanical strength of the epoxy cylinder is good, and the service life of the synchronizing shaft assembly 5 is prolonged.
In one embodiment, the movable connecting piece 5-5 comprises a roller 5-5-1 and a pin 5-5-2, the roller 5-5-1 is arranged on the movable groove 5-4, and the pin 5-5-2 penetrates through the roller 5-5-1. On the circuit breaker, a pin shaft 5-5-2 of a movable connecting piece 5-5 penetrates through a movable end 4-1 of the vacuum circuit breaker, the movable end 4-1 of the vacuum circuit breaker drives a synchronous contact arm 5-1 to move through the pin shaft 5-5-2 when moving up and down, a roller 5-5-1 moves in a movable groove 5-4, the movable groove 5-4 can compensate displacement difference generated between the movable end 4-1 of the vacuum circuit breaker and a synchronous shaft 5-3 due to up and down movement, a limiting effect can be achieved, and the pin shaft 5-5-2 can also play a role in fixing the roller 5-5-1.
In another embodiment, the movable connecting piece 5-5 comprises a bolt and a nut, the bolt is arranged in the movable groove 5-4 in a penetrating mode, the nut is installed on the bolt, and the bolt is arranged on the movable end 4-1 of the vacuum circuit breaker in a penetrating mode.
Referring to fig. 3 to 5, in order to avoid the synchronous shaft 5-3 from shifting axially, the first contact arm 5-1-1 and the second contact arm 5-1-2 are both provided with an annular groove 5-1-14, specifically, the annular groove 5-1-14 is provided on the lantern ring 5-1-12, the shaft seat 5-2 is provided with a through hole 5-7, the through hole 5-7 is provided with a jackscrew 5-8, the through hole 5-7 of the embodiment is a threaded hole, the jackscrew 5-8 is screwed into the through hole 5-7 and inserted into the annular groove 5-1-14, the width of the annular groove 5-1-14 is equal to or slightly greater than the diameter of the jackscrew 5-8, and because the friction between the synchronous shaft 5-3 and the synchronous contact arm 5-1 is relatively large, the synchronous shaft 5-3 and the synchronous contact arm 5-1 do not move relatively axially during operation And due to the limiting effect of the jackscrew 5-8, the relative motion between the synchronizing shaft 5-3 and the shaft seat 5-2 along the axial direction can be limited, but the relative rotation between the synchronizing shaft 5-3 and the shaft seat 5-2 is not influenced.
The prior art can be referred to for the parts not mentioned in the circuit breaker in the embodiment.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the technical effects of the present invention can be achieved by the same means, which all belong to the protection scope of the present invention. The technical solution and/or the embodiments of the invention may be subject to various modifications and variations within the scope of the invention.
Claims (10)
1. A synchronizing shaft assembly characterized by: the circuit breaker comprises a synchronous contact arm (5-1), a shaft seat (5-2) and a synchronous shaft (5-3), wherein one end of the synchronous contact arm (5-1) is sleeved in the shaft seat (5-2) and can rotate relative to the shaft seat (5-2), the other end of the synchronous contact arm (5-1) is provided with a movable groove (5-4), a movable connecting piece (5-5) is installed on the movable groove (5-4), the synchronous shaft (5-3) penetrates through the synchronous contact arm (5-1), a mounting hole (5-6) is formed in the shaft seat (5-2), and the number of the synchronous contact arm (5-1) and the number of the shaft seat (5-2) are equal to the pole number of the circuit breaker.
2. The synchronizing shaft assembly according to claim 1, characterized in that: the number of the synchronous contact arms (5-1) and the shaft seats (5-2) is 3, each group of synchronous contact arms (5-1) comprises a first contact arm (5-1-1) and a second contact arm (5-1-2), and the first contact arm (5-1-1) and the second contact arm (5-1-2) are respectively arranged at two ends of the same group of shaft seats (5-2).
3. The synchronizing shaft assembly according to claim 2, characterized in that: the first contact arm (5-1-1) and the second contact arm (5-1-2) are in mirror symmetry in structure, the first contact arm (5-1-1) comprises a connector (5-1-11), one end of the connector (5-1-11) is provided with a lantern ring (5-1-12), the movable groove (5-4) is formed in the other end of the connector (5-1-11), and the lantern ring (5-1-12) is sleeved in the shaft seat (5-2).
4. The synchronizing shaft assembly according to claim 3, characterized in that: the lantern ring (5-1-12) is cylindrical, the lantern ring (5-1-12) is provided with a polygonal inner hole (5-1-13), and the shape of the synchronizing shaft (5-3) is matched with the inner hole (5-1-13).
5. The synchronizing shaft assembly according to claim 4, characterized in that: the section of the inner hole (5-1-13) is square, regular hexagon or regular octagon.
6. The synchronizing shaft assembly according to claim 1, 4 or 5, characterized in that: the synchronous shaft (5-3) adopts an epoxy cylinder.
7. The synchronizing shaft assembly according to claim 1, characterized in that: the movable connecting piece (5-5) comprises a roller (5-5-1) and a pin shaft (5-5-2), the roller (5-5-1) is installed on the movable groove (5-4), and the pin shaft (5-5-2) penetrates through the roller (5-5-1).
8. The synchronizing shaft assembly according to claim 1, characterized in that: the movable connecting piece (5-5) comprises a bolt and a nut, the bolt penetrates through the movable groove (5-4), and the nut is installed on the bolt.
9. The synchronizing shaft assembly according to claim 2, characterized in that: the shaft seat (5-2) is provided with a through hole (5-7), a jackscrew (5-8) is arranged in the through hole (5-7), the first contact arm (5-1-1) and the second contact arm (5-1-2) are both provided with annular grooves (5-1-14), and the jackscrew (5-8) is inserted into the annular grooves (5-1-14).
10. A circuit breaker, characterized by: the synchronous shaft assembly comprises a support (1), a permanent magnet mechanism (2), an insulating pull rod (3), a vacuum arc-extinguishing chamber (4) and the synchronous shaft assembly according to any one of claims 1 to 9, wherein the permanent magnet mechanism (2) is installed on the support (1), the movable end (4-1) of the vacuum arc-extinguishing chamber (4) is connected with the permanent magnet mechanism (2) through the insulating pull rod (3), the shaft seat (5-2) of the synchronous shaft assembly is installed on the support (1), and each group of synchronous contact arms (5-1) of the synchronous shaft (5-3) is connected with the movable end (4-1) of the corresponding vacuum arc-extinguishing chamber (4) through the movable connecting part (5-5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920942914.8U CN210120077U (en) | 2019-06-21 | 2019-06-21 | Synchronizing shaft assembly and circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920942914.8U CN210120077U (en) | 2019-06-21 | 2019-06-21 | Synchronizing shaft assembly and circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN210120077U true CN210120077U (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920942914.8U Active CN210120077U (en) | 2019-06-21 | 2019-06-21 | Synchronizing shaft assembly and circuit breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277272A (en) * | 2019-06-21 | 2019-09-24 | 瑞熙恩电气（珠海）有限公司 | A kind of synchronous shaft assembly and breaker |
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2019
- 2019-06-21 CN CN201920942914.8U patent/CN210120077U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277272A (en) * | 2019-06-21 | 2019-09-24 | 瑞熙恩电气（珠海）有限公司 | A kind of synchronous shaft assembly and breaker |
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