CN111968891B - Locking device and circuit breaker - Google Patents
Locking device and circuit breaker Download PDFInfo
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- CN111968891B CN111968891B CN202010826336.9A CN202010826336A CN111968891B CN 111968891 B CN111968891 B CN 111968891B CN 202010826336 A CN202010826336 A CN 202010826336A CN 111968891 B CN111968891 B CN 111968891B
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- locking
- circuit breaker
- shell
- rod
- accommodating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1054—Means for avoiding unauthorised release
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a locking device and a circuit breaker, which comprise a shell and a locking assembly arranged on the shell, wherein the locking assembly comprises an accommodating part arranged on the shell, a locking part accommodated in the accommodating part and a tripping pin rotatably arranged in the shell, the accommodating part comprises an opening part, the locking part comprises a connected end part, a pull rod and an inclined surface, the end part is exposed on the surface of the shell and protrudes out of the opening part, the locking part is provided with a clamping part, the accommodating part is provided with a groove part matched with the clamping part, the inclined surface of the locking part is abutted against the tripping pin under the action of external force, so that the tripping pin is positioned at a locked first position, the inclined surface of the locking part is far away from the tripping pin under the action of the external force, so that the tripping pin is positioned at a second position for removing the limitation, the circuit breaker comprises an electric operation module, a circuit breaker module and a locking device, the tripping pin is connected with the electric operation module and the circuit breaker module, and the locking device and the circuit breaker effectively improve the reliability and the safety of the equipment maintenance process.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a locking device and a circuit breaker.
Background
In the prior art, a remote control circuit breaker usually adopts a remote control mode to realize the opening and closing processes of the circuit breaker. When the circuit overhauls, the circuit breaker need remain in the position of separating the floodgate all the time, therefore remote control circuit breaker need have self-lock device, chinese patent CN210692391U for example, discloses the circuit breaker of area mistake closing prevention device, and it utilizes the structure of locking piece itself to carry out the buckle.
However, in some occasions, how to further prevent the remote control breaker from performing false switching-on operation in an opening state and improve the equipment maintenance safety is a technical problem that needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a locking device and a circuit breaker, which effectively improve the reliability and safety of the equipment maintenance process.
The specific scheme is as follows:
a locking device comprises a shell and a locking assembly arranged on the shell, wherein the locking assembly comprises an accommodating part arranged on the shell, a locking part accommodated in the accommodating part and a trip pin rotatably arranged in the shell, the accommodating part comprises an opening part with an opening facing a wiring end of a circuit breaker and a cavity arranged in the shell, the locking part comprises an end part, a pull rod and an inclined plane which are connected, the end part is exposed on the surface of the shell and is protruded out of the opening part, the inclined plane is arranged in the cavity, a clamping part is arranged on the locking part, a groove part matched with the clamping part is arranged on the accommodating part, under the action of external force, the clamping part of the locking part is matched with the groove part and is stopped at a first preset position, the inclined plane is abutted against the trip pin, so that the trip pin is located at the first locked position, under the action of the external force, the clamping part of the locking part is matched with the groove part and is stopped at a second preset position, and the inclined plane is far away from the trip pin, so that the trip pin is located at a second position where restriction is removed;
the clamping part is a locking rod, the clamping part is movably sleeved on the end part and rotates along the end part under the action of external force, and the groove part is an accommodating groove for accommodating the locking rod and is arranged at the same side as the locking rod.
The locking rod is provided with a stress part which is arranged on the surface of the locking rod vertical to the rotation motion of the locking rod and close to one side of the pull rod.
The locking rod is provided with a convex part along the motion direction of the pull rod, and the locking rod is symmetrically provided with a stress part at the part which is perpendicular to the motion direction of the pull rod and is connected with the convex part.
The locking piece further comprises a supporting part, and the supporting part, the inclined plane and the pull rod are connected in sequence.
One end of the supporting part, which is far away from the inclined plane, is provided with a supporting table surface.
The included angle a formed by the inclined plane and the horizontal plane ranges from 55 degrees to 70 degrees.
The locking piece is of an integrated structure.
A circuit breaker comprises an electric operation module, a circuit breaker module and any one of the locking devices, wherein a tripping pin is connected with the electric operation module and the circuit breaker module.
The accommodating portion is provided in an electric manipulation housing of the electric manipulation module.
The receiving portion is provided in a circuit breaker case of the circuit breaker module.
According to the locking device and the circuit breaker, the locking component is arranged, when the circuit is overhauled, the locking component is stopped at the first preset position, the inclined surface of the locking component abuts against the trip pin, and the trip pin is limited in a brake-off state because the trip pin cannot be rotated by external force, so that the circuit is overhauled in a safe state; after the maintenance is finished, the locking piece is manually reset to be stopped at the second preset position, and the circuit breaker can be normally controlled to perform switching-on and switching-off operation. Therefore, the breaker with the anti-misoperation closing device provided by the application adopts a manual push-pull mode to realize anti-closing operation, and is simple in structure, convenient to operate and firm in locking.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a circuit breaker module when the circuit breaker with an anti-error closing device provided by the invention is in an opening state;
fig. 2 is a schematic structural diagram of a circuit breaker module when the circuit breaker with the anti-false switching device provided by the invention is in a switching state;
fig. 3 is a schematic structural diagram of a locking member in the circuit breaker with the device for preventing false switching on according to the present invention;
FIG. 4 is a first schematic view of the circuit breaker in a first position with the locking member of FIG. 3 assembled;
FIG. 5 is a schematic view of a first configuration of a tripped state with the circuit breaker assembled with the locking member of FIG. 3 in a second position;
fig. 6 is a schematic view of a first configuration of a closed state of the circuit breaker in a second position with the locking member of fig. 3 assembled;
FIG. 7 is a second schematic view of the circuit breaker in a first position assembled with the locking member of FIG. 3;
FIG. 8 is a schematic view of a second configuration of the circuit breaker in a second position with the circuit breaker assembled with the locking member of FIG. 3 in an open position;
FIG. 9 is a schematic view of a closed state of the third configuration with the circuit breaker in a second position assembled with the locking member of FIG. 3;
FIG. 10 is a schematic view of a third open-coupled state of the circuit breaker in a second position with the locking member of FIG. 3 assembled;
fig. 11 is a schematic view of the assembled terminal enclosure and circuit breaker.
The circuit breaker comprises an electric operating module 1, an electric operating shell 11, a limiting hole 111, a swing arm 12, a tripping pin 121, a breaker module 2, a handle 21, a U-shaped rod 22, a tripping button 23, a latch 24, a trigger hole 241, a moving contact 25, a static contact 26, a locking piece 3, an end 31, a pull rod 32, an inclined plane 33, a locking rod 34, a stress part 341, an arc bulge 35, a support part 36, a support table top 361, an accommodating part 4, an opening part 41, an accommodating groove 42, an arc groove 43 and a chamber 44.
Detailed Description
The invention provides a locking device and a circuit breaker, which effectively improve the reliability and safety of the equipment maintenance process.
So that those skilled in the art can better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
The invention provides a circuit breaker of a locking device, which comprises an electric operation module 1, a circuit breaker module 2 and the locking device, wherein a tripping pin 121 is connected with the electric operation module 1 and the circuit breaker module 2 so as to realize linkage of the electric operation module 1 and the circuit breaker module 2.
The electric operation module 1 comprises an electric operation shell 11, a swing arm 12 and a limit hole 111, wherein the swing arm 12 is installed on the electric operation shell 11 and rotates in the limit hole 111. The circuit breaker module 2 comprises a circuit breaker shell, a handle 21, a U-shaped rod 22, a trip buckle 23 and a lock catch 24, wherein the handle 21, the U-shaped rod 22, the trip buckle 23 and the lock catch 24 are installed on the circuit breaker shell and are sequentially connected in a rotating mode. The trigger hole 241 of the latch 24 is connected to the swing arm 12 through the trip pin 121, thereby forming a link structure to realize the linkage of the circuit breaker module 2 and the swing arm 12.
The locking device comprises a shell and a locking assembly arranged on the shell, wherein the locking assembly comprises an accommodating part 4 arranged on the shell, a locking piece 3 accommodated in the accommodating part 4 and a jumper pin 121 rotatably arranged in the shell, the accommodating part 4 comprises an opening part 41 with an opening facing a circuit breaker terminal and a cavity 44 arranged in the shell, the locking piece 3 comprises an end part 31, a pull rod 32 and an inclined surface 33 which are connected, the end part 31 is exposed on the surface of the shell and is protruded out of the opening part 41, the inclined surface 33 is arranged in the cavity 44 and moves horizontally along with the pull rod 32 in the cavity but cannot extend out of the opening part 41, a clamping part is arranged on the locking piece 3, a groove part matched with the clamping part is arranged on the accommodating part 4, the locking piece 3 is matched with the groove part under the action of external force to be in a first preset position, the inclined surface 33 abuts against the jumper pin 121, so that the jumper pin is in a first locked position, the locking piece 3 is under the action of external force, the clamping part is matched with the groove part to be in a second preset position, the inclined surface 33 is far away from the jumper pin 121, so that the jumper pin 121, the jumper pin is not exposed, the locking piece 3, and the terminal box can be seen when the terminal box is disassembled, and the terminal box is safely, and the terminal box, so that the terminal box can be maintained.
The accommodating portion 4 is disposed in the electrical operation housing of the electrical operation module 1 or the circuit breaker housing of the circuit breaker module 2, and can be disposed according to the requirement of the circuit breaker.
During remote control closing operation, the remote control circuit breaker receives closing signals, drives the electrical operation module 1 through the circuit breaker module 2 and carries out closing action, specifically, handle 21 on the circuit breaker module 2 rotates to the left, drives the motion of U type pole 22, and U type pole 22 drives jump 23 and rotates, and jump 23 drives hasp 24 and rotates, and hasp 24 drives moving contact 25 and rotates for moving contact 25 and static contact 26 are closed. In addition, a circular trigger hole 241 is formed in the latch 24 for inserting the trip pin 121, and a limiting hole 111 for avoiding the trip pin 121 is formed in the electric operating housing 11, so that the swing arm 12 is mounted on the electric operating housing 11, and the latch 24 is connected with the swing arm 12 through the trip pin 121, so that the latch 24 rotates and drives the swing arm 12 to rotate.
A first position: the locking piece 3 is pulled to the first position, namely the clamping part is matched with the groove part and is stopped at the first preset position, the inclined plane 33 of the locking piece 3 abuts against the trip pin 121 at the moment, so that the trip pin 121 is limited to be in an opening state, and the trip pin 121 is limited in action, so that the trigger hole 241 of the circuit breaker module 2 connected with the swing arm 12 through the trip pin 121 is limited in action, the latch 24 is in an unlocking state at the moment, the circuit breaker module 2 cannot realize closing, and therefore effective closing operation cannot be carried out even if the remote control breaker receives a closing signal, and the safety of line maintenance is ensured.
A second position: the locking piece 3 is pulled to a second position, namely the clamping part is matched with the groove part and is clamped at a second preset position, at the moment, the inclined plane 33 is separated from the tripping pin 121, namely the locking piece 3 removes the limitation on the tripping pin 121, the tripping pin 121 can be switched on and off along with the circuit breaker module 2, so that the swing arm 12 moves back and forth in the limiting hole 111, and when the remote control circuit breaker receives a switching-on signal, the electric operation module 1 can drive the circuit breaker module 2 to perform switching-on action.
The clamping part is a locking rod 34 which is movably sleeved or hinged on the end part 31 and rotates along the end part 31 under the action of external force, the groove part is an accommodating groove 42 for accommodating the locking rod 34 and is arranged at the same side as the locking rod 34, the locking rod 34 is in a non-horizontal position in the pushing and pulling process, and after the pushing and pulling are completed, the locking rod 34 is in a horizontal position to complete the locking.
Since the locking rod 34 is located in the receiving groove 42 when the locking rod 34 is finally in the horizontal position, and the locking rod 34 needs to be changed from the horizontal position to the non-horizontal position when the state of the circuit breaker needs to be changed, the locking rod 34 is conveniently taken out of the receiving groove 42, and the force receiving portion 341 is arranged on the locking rod 34. The specific arrangement of the force-receiving portion 341 can be selectively arranged on the surface of the locking rod 34 perpendicular to the rotation motion thereof, and is close to one end of the pull rod; the locking rod 34 is provided with a convex part along the moving direction of the pull rod 32, the locking rod 34 is symmetrically provided with a stress part 341 at a part which is perpendicular to the moving direction of the pull rod 32 and is connected with the convex part, when the circuit breaker is in one state to another state, the locking rod 34 needs to rotate 180 degrees, so the stress part 341 needs to be symmetrically arranged, the stress part 341 preferably has tooth-shaped lines, and the external force action is convenient.
The clamping part is arranged on the outer surface of the locking part 3 and is at least one circular arc protrusion 35, the groove part is arranged on the inner surface of the accommodating part 4 and is at least two circular arc grooves 43 which are matched with the circular arc protrusion 35 in distribution, the circular arc groove 43 which is far away from the opening part is a first preset position, and the circular arc groove 43 which is close to the opening part is a second preset position.
If necessary, both latching embodiments can be designed simultaneously on one circuit breaker. The stop portion can be implemented in various ways, such as limiting on the inclined surface, limiting in the cavity, etc., and the description only lists two preferable and easy ways.
In order to stabilize the inclined surface 33, a support part 36 is further provided on the locking member 3, the support part 36, the inclined surface 33 and the pull rod 32 are connected in sequence, and in order to stabilize the locking member 3, the support part 36 is provided with a support table 361 at an end far from the inclined surface 33 so as to increase a contact area of the locking member 3 and the accommodating part 4.
The included angle a formed by the inclined plane 33 and the horizontal plane is 55-70 degrees, and the inclined plane 33 is designed to convert the horizontal external force received by the locking piece 3 into the external force required by the tripping needle, so that the locking piece 3 moves more smoothly along the horizontal direction, and the tripping needle also rotates more smoothly.
The locking piece 3 is of an integrated structure, is a non-metal piece, and has elasticity, so that the strength of the locking piece 3 is improved, and the service life of the locking piece 3 is prolonged.
Therefore, the circuit breaker with the anti-misoperation closing device further provides a manual mechanical control mode on the basis of remote signal control in the prior art, and misoperation under the conditions of line maintenance and the like is effectively avoided.
When the electric operation is switched off, the swing arm 12 rotates, the swing arm 12 acts on the trigger hole 241 through the trip pin 121, so that the lock catch 24 is driven to rotate and unlock, the moving contact 25 is driven to rotate and is separated and disconnected from the static contact 26, meanwhile, the lock catch 24 is unlocked to drive the trip catch 23 to rotate, the trip catch 23 drives the U-shaped rod 22 to swing, and the U-shaped rod 22 finally drives the handle 21 to rotate to realize switching off; during manual separating brake, because swing arm 12 is spacing in the separating brake position by locking piece 3, hasp 24 is in the unblock state always, and above-mentioned link mechanism is restricted in the separating brake state equally promptly, and so, long-range uncontrollable circuit breaker switching-on operation has promoted the maintenance security.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The breaker with the device for preventing the false switching-on provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. A locking device comprising a housing and a locking assembly disposed on the housing,
the locking component comprises an accommodating part (4) arranged on the shell, a locking piece (3) accommodated in the accommodating part (4) and a jump buckle pin (121) rotatably arranged in the shell,
the housing (4) includes an opening portion (41) opening toward a circuit breaker terminal and a chamber (44) provided in the case,
the locking piece (3) comprises an end part (31), a pull rod (32) and a bevel (33) which are connected, the end part (31) is exposed out of the surface of the shell and protrudes out of the opening part (41), the bevel (33) is arranged in the cavity (44),
the locking piece (3) is provided with a clamping part, the accommodating part (4) is provided with a groove part matched with the clamping part,
the clamping part of the locking piece (3) is matched with the groove part and is clamped at a first preset position under the action of external force, the inclined surface (33) props against the tripping needle (121), so that the tripping needle (121) is positioned at the first locked position,
under the action of external force, the clamping part of the locking piece (3) is matched with the groove part and is stopped at a second preset position, the inclined plane (33) is far away from the tripping pin (121), and the tripping pin (121) is positioned at a second position for releasing the limitation;
the clamping part is a locking rod (34) which is movably sleeved on the end part (31) and rotates along the end part (31) under the action of external force, and the groove part is an accommodating groove (42) for accommodating the locking rod (34) and is arranged at the same side as the locking rod (34).
2. The locking device according to claim 1, characterized in that the locking rod (34) is provided with a force receiving portion (341), and the force receiving portion (341) is provided on a surface of the locking rod (34) perpendicular to its rotational movement and near a side of the pull rod (32).
3. The locking device according to claim 1, characterized in that the locking lever (34) is provided with a protrusion in the moving direction of the draw bar (32), and the locking lever (34) is symmetrically provided with a force receiving portion (341) at a portion perpendicular to the moving direction of the draw bar (32) and connected with the protrusion.
4. A locking arrangement as claimed in any one of claims 1 to 3, characterised in that the locking element (3) further comprises a support (36), the ramp (33) and the tie rod (32) being connected in series.
5. A locking arrangement as claimed in claim 4, characterised in that the end of the support portion (36) remote from the ramp (33) is provided with a support land (361).
6. A locking arrangement as claimed in any one of claims 1 to 3, characterised in that the angle a of the ramp (33) to the horizontal is in the range 55 ° to 70 °.
7. A circuit breaker comprising an electrical operating module (1), a circuit breaker module (2) and a locking device according to any one of claims 1 to 6, the trip pin (121) connecting the electrical operating module (1) with the circuit breaker module (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010826336.9A CN111968891B (en) | 2020-08-17 | 2020-08-17 | Locking device and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010826336.9A CN111968891B (en) | 2020-08-17 | 2020-08-17 | Locking device and circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111968891A CN111968891A (en) | 2020-11-20 |
| CN111968891B true CN111968891B (en) | 2022-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010826336.9A Active CN111968891B (en) | 2020-08-17 | 2020-08-17 | Locking device and circuit breaker |
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| Country | Link |
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| CN (1) | CN111968891B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477482A (en) * | 2020-04-13 | 2020-07-31 | 浙江正泰电器股份有限公司 | Plug-in circuit breaker |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10013103C1 (en) * | 2000-03-17 | 2001-11-29 | Aeg Niederspannungstech Gmbh | casing |
| CN203882918U (en) * | 2014-04-09 | 2014-10-15 | 上海诺雅克电气有限公司 | Breaker with controller being pluggable and replaceable in live line |
| CN204558390U (en) * | 2015-04-28 | 2015-08-12 | 浙江丰源电器配件有限公司 | Tripping device for circuit breaker |
| CN109585233B (en) * | 2018-12-28 | 2024-05-14 | 浙江正泰电器股份有限公司 | Small-sized circuit breaker |
| CN209401584U (en) * | 2019-04-08 | 2019-09-17 | 俊郎电气有限公司 | A kind of electric leakage self-locking device for breaker |
| CN110085494A (en) * | 2019-06-03 | 2019-08-02 | 浙江思创电力科技股份有限公司 | A kind of breaker with anti-error closing device |
| CN110400727A (en) * | 2019-08-01 | 2019-11-01 | 浙江正泰电器股份有限公司 | Breaker |
| CN110931317B (en) * | 2019-09-19 | 2021-09-14 | 许继集团有限公司 | Direct current circuit breaker and self-locking device thereof |
| CN210692391U (en) * | 2019-11-21 | 2020-06-05 | 浙江思创电力科技股份有限公司 | Circuit breaker with anti-misoperation closing device |
| CN210607020U (en) * | 2019-12-02 | 2020-05-22 | 浙江思创电力科技股份有限公司 | Circuit breaker with anti-misoperation closing device |
| CN111446093A (en) * | 2020-04-30 | 2020-07-24 | 浙江天正电气股份有限公司 | Locking structure and circuit breaker with same |
-
2020
- 2020-08-17 CN CN202010826336.9A patent/CN111968891B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477482A (en) * | 2020-04-13 | 2020-07-31 | 浙江正泰电器股份有限公司 | Plug-in circuit breaker |
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| CN111968891A (en) | 2020-11-20 |
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