CN209962911U - Emergency opening mechanical interlocking device of fixed circuit breaker - Google Patents
Emergency opening mechanical interlocking device of fixed circuit breaker Download PDFInfo
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- CN209962911U CN209962911U CN201920799633.1U CN201920799633U CN209962911U CN 209962911 U CN209962911 U CN 209962911U CN 201920799633 U CN201920799633 U CN 201920799633U CN 209962911 U CN209962911 U CN 209962911U
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Abstract
The utility model relates to the field of high-voltage switch equipment, and discloses a fixed breaker emergency opening mechanical interlocking device, which comprises a breaker arranged in a switch cabinet, wherein a breaker opening rotating shaft is connected with an opening springboard used for opening the breaker, and a breaker closing rotating shaft is connected with a closing springboard used for closing the breaker; a top rod guide plate is arranged on the side surface of the breaker frame, and an opening top rod and a closing top rod which can vertically slide are arranged on the top rod guide plate; a plurality of rotating shaft guide plates are arranged at the top end of the switch cabinet at intervals, and a rotatable rotating shaft is arranged between the rotating shaft guide plates; two ejector rod pressing plates are fixedly sleeved on the rotating shaft and respectively correspond to the top ends of the opening ejector rod and the closing ejector rod. The utility model provides a current separating brake mechanical interlocking structure complicated, the poor problem of reliability.
Description
Technical Field
The utility model relates to a high tension switchgear field specifically indicates a fixed circuit breaker mechanical interlock that promptly breaks brake.
Background
The circuit breaker is widely applied to the middle-high voltage power transmission and distribution industry, and the fixed switch cabinet has the characteristics of simple structure, economy and the like. The circuit breaker is used as a core component and can be used as an electric appliance for voltage loss, undervoltage, overload and short-circuit protection. Generally, a circuit breaker is provided with an opening switch and a closing switch. The opening and closing of the circuit breaker are realized through the opening switch and the closing switch. However, since the closing switch is easily touched to be turned on, there are many misoperation during the opening process, and the closing switch is touched by mistake, which may damage the breaker and the electrical appliance connected to the breaker.
Therefore, an interlocking device is generally arranged on the opening switch and the closing switch, and the circuit breaker interlocking protection device is a device for limiting the closing and opening of the circuit breaker during the test, the overhaul and the power transmission of the high-voltage switch circuit breaker. The high-voltage switch has the requirement of five prevention, and the important one is to prevent the circuit breaker from being switched on or switched off by mistake, so that corresponding protection devices are arranged on the switch cabinet and the circuit breaker to prevent safety accidents. The interlocking device can prevent the isolating switch from being switched on and off with load, so that the closing switch is propped against the isolating switch in the switching-off process, and the closing switch cannot be operated. Therefore, the reliability of the mechanical interlock of the emergency opening brake is particularly important, and an emergency opening brake interlock with simple structure and reliable function is urgently needed to meet the requirement.
SUMMERY OF THE UTILITY MODEL
Based on above technical problem, the utility model provides a fixed circuit breaker promptly separating brake mechanical interlock has solved the problem that current separating brake mechanical interlock structure is complicated, the reliability is poor.
For solving the above technical problem, the utility model discloses a technical scheme as follows:
a fixed breaker emergency opening mechanical interlocking device comprises a breaker arranged in a switch cabinet, wherein an opening rotating shaft of the breaker is connected with an opening springboard for opening the breaker, and a closing rotating shaft of the breaker is connected with a closing springboard for closing the breaker; a top rod guide plate is arranged on the side surface of the breaker frame, and an opening top rod and a closing top rod which can vertically slide are arranged on the top rod guide plate; a plurality of rotating shaft guide plates are arranged at the top end of the switch cabinet at intervals, and a rotatable rotating shaft is arranged between the rotating shaft guide plates; two ejector rod pressing plates are fixedly sleeved on the rotating shaft, correspond to the top ends of the opening ejector rod and the closing ejector rod respectively and can press the opening ejector rod and the closing ejector rod downwards along with the rotation of the rotating shaft; the switching-off ejector rod can move downwards to be in contact with the switching-off springboard and drive the switching-off springboard to rotate for switching off, and the switching-on ejector rod can move downwards to limit the switching-off springboard so as to prevent the switching-off springboard from rotating; the ejector rod guide plate is provided with a reset mechanism which can enable the opening ejector rod and the closing ejector rod to move upwards and reset.
The utility model discloses in, when the cubical switchboard was operated in disconnected isolated state of branch, rotated the pivot, the ejector pin clamp plate of the pivot other end rotated along with the pivot, and the ejector pin clamp plate pushes down separating brake ejector pin, combined floodgate ejector pin make its downstream. The switching-off ejector rod moves downwards to drive the switching-off springboard arranged on the switching-off rotating shaft to rotate, the switching-off springboard drives the switching-off rotating shaft to rotate to complete a tripping and switching-off function, and the switching-on ejector rod moves downwards to block the switching-on springboard arranged on the switching-on rotating shaft to limit the switching-on springboard so that the switching-on springboard cannot move, so that accidents caused by accidental switching-on are avoided. Then the rotating shaft is fixed to be incapable of rotating, and the protection function that the breaker is forbidden to be switched on is achieved. When the switch cabinet is operated to a working state from a breaking isolation state, the fixed state of the rotating shaft is released, the pressing force of the ejector rod pressing plate on the ejector rod disappears, the reset mechanism drives the opening ejector rod and the closing ejector rod to move upwards to return to the initial positions, and the ejector rod can jack the ejector rod pressing plate and drive the rotating shaft to rotate reversely. The switching-off ejector rod moves upwards to be separated from contact with the switching-off springboard, and meanwhile, the limitation of the switching-on springboard by the upward movement of the switching-on ejector rod disappears, so that the circuit breaker can perform a normal switching-on function.
As a preferred mode, the reset mechanism comprises an ejector rod guide plate, the ejector rod guide plate is of a U-shaped structure, the opening ejector rod and the closing ejector rod penetrate through side plates on the upper side and the lower side of the ejector rod guide plate, and reset springs are sleeved on the opening ejector rod and the closing ejector rod and are positioned in U-shaped grooves of the ejector rod guide plate; the lower end of the reset spring is propped against a side plate at the lower end of the ejector rod guide plate, and the upper end of the reset spring is fixedly connected with the opening ejector rod and the closing ejector rod.
As a preferred mode, the rotating shaft guide plate close to the ejector rod pressing plate is provided with a transverse bending part, and the bending part extends to the upper part of the ejector rod pressing plate.
As a preferred mode, the top ends of the opening ejector rod and the closing ejector rod are connected with connectors, the upper portions of the connectors extend out of the switch cabinet, and the lower portions of the connectors are provided with limiting blocks.
As a preferred mode, one end of the rotating shaft, which is far away from the ejector rod pressing plate, is provided with a cabinet body interlocking plate.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model provides a current separating brake mechanical interlocking structure complicated, the poor problem of reliability. Most of the mechanism parts are sheet metal parts and machining parts with simple structures, so that the cost is low and the processing is convenient; the mechanism is simple in assembly process, the interlocking device and the circuit breaker mechanism are mutually independent, and the circuit breaker mechanism does not need to be disassembled when the interlocking device is in transfer fit.
(2) The utility model discloses a canceling release mechanical system, when the cubical switchboard from dividing disconnected isolated state operation to operating condition, canceling release mechanical system can drive the separating brake ejector pin automatically and upwards resets with combined floodgate ejector pin and get back to initial position.
(3) The utility model discloses a separating brake ejector pin and combined floodgate ejector pin top are connected with the connector, and outside connector upper portion extended to the cubical switchboard, the connector lower part was equipped with the stopper. The connector can limit the upward resetting stroke of the opening ejector rod and the closing ejector rod, and the phenomenon that the resetting stroke of the opening ejector rod and the closing ejector rod is too large and the opening ejector rod and the closing ejector rod are separated from contact with the ejector rod pressing plate is avoided.
(4) The utility model discloses a pivot deflector that is close to the ejector pin clamp plate is equipped with horizontal kink, and the kink extends to ejector pin clamp plate top, and when the pivot gyration drove the ejector pin clamp plate and upwards rotated, the kink can play limiting displacement, makes the pivot rotate certain angle after can not gyration again, reduces next time and rotates the stroke.
(5) The utility model discloses a push rod clamp plate one end is kept away from in the pivot is equipped with cabinet body interlocking board, cabinet body interlocking board can with cabinet body coupling, when the cubical switchboard is operated in disconnected isolated state, avoids its rotation to its limiting displacement of pivot to make separating brake mechanical interlocking be in lock state.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a right side view of fig. 1.
The device comprises a cabinet body interlocking plate 1, a rotating shaft 2, a rotating shaft guide plate 3, a bending part 4, an ejector rod pressing plate 5, a connector 6, a switch cabinet 7, a snap ring 8, an ejector rod guide plate 9, a reset spring 10, an opening ejector rod 11, an opening springboard 12, a closing ejector rod 13 and a closing springboard 14.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Example 1:
referring to fig. 1-3, an emergency opening mechanical interlocking device for a fixed circuit breaker comprises a circuit breaker arranged in a switch cabinet 7, wherein an opening tripping plate 12 for opening is connected to a circuit breaker opening rotating shaft 2, and a closing tripping plate 14 for closing is connected to a circuit breaker closing rotating shaft 2; a top rod guide plate 9 is installed on the side surface of the breaker frame, and an opening top rod 11 and a closing top rod 13 which can vertically slide are arranged on the top rod guide plate 9; a plurality of rotating shaft guide plates 3 are arranged at the top end of the switch cabinet 7 at intervals, and a rotatable rotating shaft 2 is arranged between the rotating shaft guide plates 3; two ejector rod pressing plates 5 are fixedly sleeved on the rotating shaft 2, the two ejector rod pressing plates 5 respectively correspond to the top ends of the opening ejector rod 11 and the closing ejector rod 13 and can press the opening ejector rod 11 and the closing ejector rod 13 downwards along with the rotation of the rotating shaft 2; the switching-off ejector rod 11 can move downwards to be in contact with the switching-off springboard 12 and drive the switching-off springboard 12 to rotate for switching off, and the switching-on ejector rod 13 can move downwards to limit the switching-off springboard 14 so as to prevent the switching-off springboard from rotating; the ejector rod guide plate 9 is provided with a reset mechanism which can make the opening ejector rod 11 and the closing ejector rod 13 move upwards to reset.
In the embodiment, when the switch cabinet 7 is operated in the breaking isolation state, the rotating shaft 2 is rotated, the push rod pressing plate 5 at the other end of the rotating shaft 2 rotates along with the rotating shaft 2, and the push rod pressing plate 5 presses the opening push rod 11 and the closing push rod 13 downwards to move downwards. The opening ejector rod 11 moves downwards to drive the opening springboard 12 installed on the opening rotating shaft 2 to rotate, the opening springboard 12 drives the opening rotating shaft 2 to rotate to complete the tripping and opening functions, and the closing ejector rod 13 moves downwards to block the closing springboard 14 installed on the closing rotating shaft 2 to limit the closing springboard 14 so that the closing springboard 14 cannot move, and therefore accidents caused by accidental closing are avoided. Then the rotating shaft 2 is fixed to be incapable of rotating, and the protection function of forbidding closing of the circuit breaker is achieved.
When the switch cabinet 7 is operated to a working state from a breaking isolation state, the fixing state of the rotating shaft 2 is released, the pressing force of the ejector rod pressing plate 5 on the ejector rod disappears, the reset mechanism drives the opening ejector rod 11 and the closing ejector rod 13 to move upwards to return to the initial position, and the ejector rod can jack up the ejector rod pressing plate 5 and drive the rotating shaft 2 to rotate reversely. The opening mandril 11 moves upwards to be separated from the contact with the opening springboard 12, and meanwhile, the closing mandril 13 moves upwards to remove the limitation on the closing springboard 14, so that the breaker can perform a normal closing function.
Example 2:
referring to fig. 1-3, an emergency opening mechanical interlocking device for a fixed circuit breaker comprises a circuit breaker arranged in a switch cabinet 7, wherein an opening tripping plate 12 for opening is connected to a circuit breaker opening rotating shaft 2, and a closing tripping plate 14 for closing is connected to a circuit breaker closing rotating shaft 2; a top rod guide plate 9 is installed on the side surface of the breaker frame, and an opening top rod 11 and a closing top rod 13 which can vertically slide are arranged on the top rod guide plate 9; a plurality of rotating shaft guide plates 3 are arranged at the top end of the switch cabinet 7 at intervals, and a rotatable rotating shaft 2 is arranged between the rotating shaft guide plates 3; two ejector rod pressing plates 5 are fixedly sleeved on the rotating shaft 2, the two ejector rod pressing plates 5 respectively correspond to the top ends of the opening ejector rod 11 and the closing ejector rod 13 and can press the opening ejector rod 11 and the closing ejector rod 13 downwards along with the rotation of the rotating shaft 2; the switching-off ejector rod 11 can move downwards to be in contact with the switching-off springboard 12 and drive the switching-off springboard 12 to rotate for switching off, and the switching-on ejector rod 13 can move downwards to limit the switching-off springboard 14 so as to prevent the switching-off springboard from rotating; the ejector rod guide plate 9 is provided with a reset mechanism which can make the opening ejector rod 11 and the closing ejector rod 13 move upwards to reset.
Further, the reset mechanism comprises an ejector rod guide plate 9, the ejector rod guide plate 9 is of a U-shaped structure, the opening ejector rod 11 and the closing ejector rod 13 penetrate through side plates on the upper side and the lower side of the ejector rod guide plate, the opening ejector rod 11 and the closing ejector rod 13 are sleeved with a reset spring 10, and the reset spring 10 is located in a U-shaped groove of the ejector rod guide plate 9; the lower end of the reset spring 10 props against a side plate at the lower end of the ejector rod guide plate 9, and the upper end of the reset spring is fixedly connected with the opening ejector rod 11 and the closing ejector rod 13. When the opening ejector rod 11 and the closing ejector rod 13 move downwards, the reset spring 10 can be compressed to store energy, and when the ejector rod pressing plate 5 is loosened, the reset spring 10 releases energy to reset, so that the opening ejector rod 11 and the closing ejector rod 13 move upwards. Through the reset mechanism, when the switch cabinet 7 is operated to a working state from a breaking isolation state, the reset mechanism can automatically drive the opening ejector rod 11 and the closing ejector rod 13 to reset upwards to return to the initial position.
Furthermore, the top ends of the opening ejector rod 11 and the closing ejector rod 13 are connected with a connector 6, the upper part of the connector 6 extends out of the switch cabinet 7, and the lower part of the connector 6 is provided with a limiting block. The connector 6 can limit the upward reset stroke of the opening ejector rod 11 and the closing ejector rod 13, and avoid the overlarge reset stroke of the opening ejector rod 11 and the closing ejector rod 13 from being separated from the contact with the ejector rod pressing plate 5.
Further, pivot deflector 3 that is close to ejector pin clamp plate 5 is equipped with horizontal kink 4, and kink 4 extends to ejector pin clamp plate 5 top, and when 2 gyration drive ejector pin clamp plate 5 upwards rotated in pivot, kink 4 can play limiting displacement, makes 2 rotations of pivot can not turn round again after certain angle, reduces next time and rotates the stroke.
Furthermore, one end of the rotating shaft 2, which is far away from the ejector rod pressing plate 5, is provided with a cabinet body interlocking plate 1, the cabinet body interlocking plate 1 can be connected with the cabinet body, and when the switch cabinet 7 is operated in a breaking isolation state, the rotating shaft 2 is limited to avoid rotating, so that the opening mechanical interlocking is in a locking state.
The other parts of this embodiment are the same as embodiment 1, and are not described herein again.
The embodiment of the present invention is the above. The above embodiments and the specific parameters in the embodiments are only for the purpose of clearly showing the verification process of the utility model, and are not used to limit the patent protection scope of the utility model, the patent protection scope of the utility model is still subject to the claims, all the equivalent structural changes made by using the contents of the specification and the drawings of the utility model are included in the protection scope of the utility model.
Claims (5)
1. The utility model provides a fixed circuit breaker mechanical interlock that promptly opens floodgate, is including locating the circuit breaker in cubical switchboard (7), its characterized in that: the breaker opening rotating shaft is connected with an opening springboard (12) for opening a switch, and the breaker closing rotating shaft is connected with a closing springboard (14) for closing a switch; a push rod guide plate (9) is installed on the side face of the breaker frame, and a switching-off push rod (11) and a switching-on push rod (13) which can vertically slide are arranged on the push rod guide plate (9); a plurality of rotating shaft guide plates (3) are arranged at the top end of the switch cabinet (7) at intervals, and a rotatable rotating shaft (2) is erected between the rotating shaft guide plates (3); the rotating shaft (2) is fixedly sleeved with two ejector rod pressing plates (5), and the two ejector rod pressing plates (5) respectively correspond to the top ends of the opening ejector rod (11) and the closing ejector rod (13) and can rotate along with the rotating shaft (2) to press the opening ejector rod (11) and the closing ejector rod (13) downwards; the switching-off ejector rod (11) can move downwards to be in contact with the switching-off springboard (12) and drive the switching-off springboard (12) to rotate for switching off, and the switching-on ejector rod (13) can move downwards to limit the switching-off springboard (14) so that the switching-off springboard cannot rotate; and a reset mechanism capable of enabling the opening ejector rod (11) and the closing ejector rod (13) to move upwards and reset is arranged on the ejector rod guide plate (9).
2. The emergency opening mechanical interlock of a fixed circuit breaker according to claim 1, further comprising: the reset mechanism comprises an ejector rod guide plate (9), the ejector rod guide plate (9) is of a U-shaped structure, the opening ejector rod (11) and the closing ejector rod (13) penetrate through side plates on the upper side and the lower side of the ejector rod guide plate, a reset spring (10) is sleeved on the opening ejector rod (11) and the closing ejector rod (13), and the reset spring (10) is located in a U-shaped groove of the ejector rod guide plate (9); the lower end of the reset spring (10) is propped against a side plate at the lower end of the ejector rod guide plate (9), and the upper end of the reset spring is fixedly connected with the opening ejector rod (11) and the closing ejector rod (13).
3. The emergency opening mechanical interlock of a fixed circuit breaker according to claim 1, further comprising: the rotating shaft guide plate (3) close to the ejector rod pressing plate (5) is provided with a transverse bending part (4), and the bending part (4) extends to the position above the ejector rod pressing plate (5).
4. The emergency opening mechanical interlock of a fixed circuit breaker according to claim 1, further comprising: the switch-off ejector rod (11) and the switch-on ejector rod (13) top are connected with the connector (6), the upper portion of the connector (6) extends to the outside of the switch cabinet (7), and the lower portion of the connector (6) is provided with the snap ring (8).
5. The emergency opening mechanical interlock of a fixed circuit breaker according to claim 1, further comprising: one end of the rotating shaft (2) far away from the ejector rod pressing plate (5) is provided with a cabinet body interlocking plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920799633.1U CN209962911U (en) | 2019-05-30 | 2019-05-30 | Emergency opening mechanical interlocking device of fixed circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920799633.1U CN209962911U (en) | 2019-05-30 | 2019-05-30 | Emergency opening mechanical interlocking device of fixed circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN209962911U true CN209962911U (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920799633.1U Active CN209962911U (en) | 2019-05-30 | 2019-05-30 | Emergency opening mechanical interlocking device of fixed circuit breaker |
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| CN (1) | CN209962911U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116625667A (en) * | 2023-07-25 | 2023-08-22 | 川开电气有限公司 | Online monitoring method for mechanical characteristics of 10kV vacuum circuit breaker |
-
2019
- 2019-05-30 CN CN201920799633.1U patent/CN209962911U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116625667A (en) * | 2023-07-25 | 2023-08-22 | 川开电气有限公司 | Online monitoring method for mechanical characteristics of 10kV vacuum circuit breaker |
| CN116625667B (en) * | 2023-07-25 | 2023-11-14 | 川开电气有限公司 | Online monitoring method for mechanical characteristics of 10kV vacuum circuit breaker |
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