CN215527511U - Circuit breaker mechanical interlocking device of dual-power switch - Google Patents
Circuit breaker mechanical interlocking device of dual-power switch Download PDFInfo
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- CN215527511U CN215527511U CN202121651477.8U CN202121651477U CN215527511U CN 215527511 U CN215527511 U CN 215527511U CN 202121651477 U CN202121651477 U CN 202121651477U CN 215527511 U CN215527511 U CN 215527511U
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- circuit breaker
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- lock shaft
- closing
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- Switch Cases, Indication, And Locking (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a mechanical interlocking device of a circuit breaker of a dual-power switch, which comprises a bracket, a lock shaft and a limiting mechanism, wherein the lock shaft and the limiting mechanism are arranged on the bracket, the lock shaft is driven by a key matched with the lock shaft to move up and down, an interlocking fixing plate is fixedly arranged at the top end of the lock shaft, a closing button of the circuit breaker is positioned above the interlocking fixing plate, a pressing plate is fixedly arranged at the bottom end of the lock shaft, a microswitch contact capable of closing or disconnecting an electric closing loop of the circuit breaker is arranged below the pressing plate, and the limiting mechanism has two states of extension and retraction. The mechanical interlocking device for the circuit breaker of the dual-power switch has the advantages of simple structure, reasonable design and convenient use, and can effectively prevent the circuit breaker of the dual-power switch from being switched on and off by mistake, ensure that the main circuit breaker and the bypass circuit breaker can not be switched on simultaneously and ensure safety.
Description
Technical Field
The utility model relates to the field of circuit breaker equipment in the power industry, in particular to a mechanical interlocking device for a circuit breaker of a dual-power switch.
Background
For preventing the maloperation from appearing at the in-process that uses high tension switchgear, and cause the accident of personnel, equipment harm, according to international standard, high tension switchgear should possess perfect five functions of preventing: the circuit breaker is prevented from being opened and closed by mistake; the isolating switch is prevented from being switched on and off by mistake when the load is carried; preventing people from entering electrified isolation by mistake; an anti-electrification and grounding switch; and the grounding switch is prevented from switching on and the power is supplied.
The dual-power switch generally comprises a main circuit breaker and a bypass circuit breaker, in order to ensure that two circuit breakers are not switched on and switched off at the same time, an interlocking mechanism is generally designed to prevent the circuit breakers from being switched off and switched on by mistake, the existing interlocking mechanism comprises an electrical interlock and a mechanical interlock, wherein the electrical interlock is unstable, and the existing mechanical interlock is complex in structure, insensitive in mechanical action and inconvenient to use.
In view of the above, the inventor of the present application invented a mechanical interlocking device for a circuit breaker of a dual power switch.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a mechanical interlocking device of a circuit breaker of a dual-power switch, which has the advantages of simple structure, reasonable design and convenient use.
In order to achieve the purpose, the utility model adopts the following technical scheme: a double-power switch's circuit breaker mechanical interlocking device comprises a support, a lock shaft and a limiting mechanism, wherein the lock shaft and the limiting mechanism are arranged on the support, the lock shaft is driven by a key matched with the lock shaft to move up and down, an interlocking fixing plate is fixedly arranged at the top end of the lock shaft, a closing button of a circuit breaker is positioned above the interlocking fixing plate, a pressing plate is fixedly arranged at the bottom end of the lock shaft, a micro-switch contact capable of closing or breaking an electric closing loop of the circuit breaker is arranged below the pressing plate, the limiting mechanism has two states of extending and retracting,
the key is rotated to an unlocking position, the lock shaft moves downwards along with the key, the pressure plate descends to press the micro switch contact to close an electric closing loop of the circuit breaker, the limiting mechanism is in an extending state to limit the interlocking fixing plate to enable the interlocking fixing plate not to move upwards, the lock shaft cannot move upwards, the key cannot rotate to a locking position, the circuit breaker is in a closing state at the moment, and the key cannot be pulled out;
the limiting mechanism returns to a backspacing state, the key is rotated to a locking position, the lock shaft moves upwards along with the key, the interlocking fixing plate rises and abuts against the closing button to enable the closing button not to be closed, meanwhile, the pressing plate rises to release the micro switch contact to enable the electric closing loop of the circuit breaker to be disconnected, the circuit breaker is in a switching-off and non-closing state at the moment, and the key can be pulled out.
Further, the lock shaft is mounted at the front end of the support, the limiting mechanism is mounted on one side of the support, the limiting mechanism comprises an interlocking plate capable of moving back and forth, a driving structure for driving the interlocking plate to extend forwards to be in an extending state, and an elastic resetting piece for enabling the interlocking plate to reset and retract to be in a retracting state, and the interlocking plate is located above the interlocking fixing plate when in the extending state.
Further, the driving structure comprises a rotating piece hinged with the support and a fixing pin located on the interlocking plate, and the front side of the rotating piece abuts against the rear side of the fixing pin.
Further, the rotation piece includes the equal articulated switching-on separating brake indicator panel and the rotation baffle with the support, switching-on separating brake indicator panel rotates and can show "switching-on" or "separating brake", the upper portion of rotation baffle is equipped with the matching block and is in the card post on the switching-on separating brake indicator panel, the top of rotation baffle bottom front side is leaned on the rear side of fixed pin.
Furthermore, the switching-on and switching-off indicating plate and the rotating baffle plate are coaxially hinged on the bracket.
Furthermore, waist-shaped holes are formed in the interlocking plate in the front and back direction, connecting shafts matched with the waist-shaped holes are arranged in the waist-shaped holes, and the connecting shafts are fixedly connected with the support.
Furthermore, the elastic reset piece is a tension spring, the rear end of the tension spring is installed on the support, and the front end of the tension spring is connected with the rear end of the interlocking plate.
After the technical scheme is adopted, the utility model has the following advantages:
the mechanical interlocking device for the circuit breaker of the dual-power switch has the advantages of simple structure, reasonable design and convenient use, and can effectively prevent the circuit breaker of the dual-power switch from being switched on and off by mistake, ensure that the main circuit breaker and the bypass circuit breaker can not be switched on simultaneously and ensure safety.
Drawings
Fig. 1 is a schematic view of a mechanical interlocking device in which a key is in an unlocking position and a circuit breaker is in a closable state according to an embodiment of the present invention;
fig. 2 is a schematic view of another perspective view of the mechanical interlocking device in the embodiment of the present invention, where the key is in the unlocking position and the circuit breaker is in the closable state;
FIG. 3 is a schematic diagram of a mechanical interlock apparatus for an embodiment of the present invention, wherein the key is in a locked position, and the circuit breaker is in an open state and an open state;
FIG. 4 is a schematic view of another perspective of the mechanical interlock device in the locked position with the circuit breaker in the open and non-closed states according to the embodiment of the present invention;
fig. 5 is an external schematic view of a circuit breaker according to an embodiment of the utility model.
Description of reference numerals:
10-a support, wherein the support is provided with a plurality of brackets,
20-lock shaft, 21-interlocking fixing plate, 22-pressing plate, 23-indication panel,
30-a switch-on button, wherein,
40-a contact of a micro-switch,
50-interlocking plate, 51-waist-shaped hole, 52-connecting shaft,
60-driving structure, 61-switching-on/switching-off indicating plate, 62-rotating baffle plate, 63-fixed pin,
70-elastic restoring member.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the apparatus or element of the present invention must have a specific orientation, and thus, should not be construed as limiting the present invention.
Examples
Referring to fig. 1 to 4, the utility model discloses a mechanical interlocking device for a circuit breaker of a dual-power switch, wherein one circuit breaker is correspondingly provided with one mechanical interlocking device, and the mechanical interlocking device is mainly used for preventing the circuit breaker from being opened and closed by mistake so as to ensure that a main circuit breaker and a bypass circuit breaker can not be closed simultaneously and ensure safety. The mechanical interlocking device specifically comprises a support 10, a lock shaft 20 and a limiting mechanism, wherein the lock shaft 20 is arranged at the front end of the support 10, the lock shaft 20 is driven by a key matched with the lock shaft to move up and down, the lock shaft 20 can be driven by rotating the key to move up and down along with the lock shaft, the corresponding lock shaft 20 can only be driven by the key matched with the lock shaft, one dual-power switch corresponds to one key, and a main circuit breaker and a bypass circuit breaker of the same switch are shared by the key. The top end of the lock shaft 20 is fixedly provided with an interlocking fixing plate 21, a closing button 30 of the circuit breaker is positioned above the interlocking fixing plate 21, the interlocking fixing plate can prop against the closing button 30 along with the upward movement of the lock shaft 20 so that the circuit breaker cannot be closed, namely, the circuit breaker cannot be mechanically closed, and the circuit breaker can be closed through the closing button 30 when the interlocking fixing plate does not prop against the closing button 30 along with the downward movement of the lock shaft 20.
The bottom end of the lock shaft 20 is fixedly provided with a pressing plate 22, a microswitch contact 40 capable of closing or opening an electric closing loop of the circuit breaker is arranged below the pressing plate 22, when the pressing plate 22 presses the microswitch contact 40 along with the downward movement of the lock shaft 20, the electric closing loop of the circuit breaker is closed, namely, the circuit breaker can be electrically closed, the microswitch contact 40 is released when the pressing plate 22 moves upward along with the lock shaft 20, the electric closing loop of the circuit breaker is opened, namely, the circuit breaker can not be electrically closed.
The limiting mechanism is arranged on one side of the support 10 and has two states of extending and retracting, when the limiting mechanism is in the extending state, the limiting mechanism can limit the interlocking fixing plate to enable the interlocking fixing plate not to move upwards, and when the limiting mechanism is in the retracting state, the interlocking fixing plate can move upwards. Specifically, the limiting mechanism includes an interlocking plate 50 capable of moving back and forth, a driving structure 60 for driving the interlocking plate 50 to extend forward and be in an extending state, and an elastic resetting member 70 for prompting the interlocking plate 50 to return and retract to be in a retracting state, when the interlocking plate 50 is in the extending state, the interlocking plate is located above the interlocking fixing plate 21 and can press the interlocking fixing plate to enable the interlocking fixing plate and the lock shaft 20 to be incapable of rising, so that the key keeps the current position and can not rotate any more, at this time, the extending state of the limiting mechanism corresponds to the extending state, when the interlocking plate 50 is in the retracting state, the interlocking plate is located on the rear side of the interlocking fixing plate, the key is rotated, the lock shaft 20 can be driven to drive the interlocking fixing plate to move upward, and at this time, the retracting state of the limiting mechanism corresponds to the retracting state of the limiting mechanism.
In this embodiment, the driving structure 60 includes a rotating member hinged to the bracket 10, and a fixing pin 63 located on the interlocking plate 50, wherein a front side of the rotating member abuts against a rear side of the fixing pin 63. Specifically, the rotating member includes a closing and opening indicating plate 61 and a rotating baffle plate 62 which are hinged to the support 10, the closing and opening indicating plate 61 and the rotating baffle plate 62 are coaxially hinged to the support 10, the closing and opening indicating plate 61 rotates to display 'closing' or 'opening', the upper portion of the rotating baffle plate 62 is provided with a clamping column (not shown in the figure) which is clamped on the closing and opening indicating plate 61, so that the rotating baffle plate 62 is linked with the closing and opening indicating plate 61, and the front side of the bottom of the rotating baffle plate 62 abuts against the rear side of the fixing pin 63. The closing and opening indicating plate 61 rotates to drive the rotating baffle 62 to rotate along with the rotating baffle 62, when the bottom of the rotating baffle 62 rotates towards the front of the support 10, the rotating baffle 62 can drive the interlocking plate 50 to extend forwards along with the rotating baffle and keep the interlocking plate in an extending state, when the bottom of the rotating baffle 62 rotates towards the rear of the support 10, the rotating baffle 62 is separated from the fixing pin 63, and the interlocking plate 50 is reset to return to a returning state under the resetting action of the elastic resetting piece 70.
In this embodiment, the interlocking plate 50 is provided with a front-back waist-shaped hole 51, a connecting shaft 52 adapted to the front-back waist-shaped hole 51 is arranged in the waist-shaped hole 51, the connecting shaft 52 is fixedly connected to the support 10, the interlocking plate 50 is fixedly mounted on the support 10 through the connecting shaft 52, and the connecting shaft 52 and the waist-shaped hole 51 are also guiding structures for the front-back movement of the interlocking plate 50, so that the movement of the interlocking plate 50 is more stable.
In this embodiment, the elastic reset member 70 is a tension spring horizontally disposed in the front-rear direction, the rear end of the tension spring is mounted on the bracket 10, and the front end of the tension spring is connected to the rear end of the interlocking plate 50.
In this embodiment, an indication panel 23 is disposed at the front end of the lock shaft 20, and the indication panel 23 indicates the corresponding rotation direction of the key locking position and the key unlocking position.
Referring to fig. 5, in the present embodiment, the whole mechanical interlocking device is located inside the circuit breaker, a visual panel (not shown) for viewing the "closing" or "opening" status displayed by the closing/opening indicating plate 61, a panel button (not shown) corresponding to the closing switch, and a channel for inserting a key are correspondingly disposed outside the circuit breaker, wherein the indicating panel 23 is located outside the switch door.
Referring to fig. 1 to 2, the key is rotated to the unlocking position, the lock shaft 20 moves downward, the pressing plate 22 descends to press the micro switch contact 40, so that the electric closing loop of the circuit breaker is closed, the closing and opening indicating plate 61 is rotated to drive the rotating baffle 62 to rotate, and further the interlocking plate 50 is driven to extend out and be in the extending state, the lock shaft 20 cannot move upward, the key cannot rotate to the locking position, the closing and opening indicating plate 61 displays "closing", the main circuit breaker is in the closing state, and the key cannot be extracted, so that the bypass circuit breaker cannot be closed if the bypass circuit breaker is unlocked without the key, and the bypass circuit breaker can be effectively prevented from being closed by mistake.
Referring to fig. 3 to 4, the rotary closing and opening indicating plate 61 drives the rotary baffle 62 to rotate in the opposite direction, the rotary baffle 62 is separated from the fixed pin 63, the elastic resetting piece 70 drives the interlocking plate 50 to reset to be in a retreating state, the key is rotated to a locking position, the lock shaft 20 moves upwards along with the elastic resetting piece, the interlocking fixing plate 21 rises and abuts against the closing button 30 to enable the closing button to be incapable of closing, meanwhile, the pressing plate 22 rises to release the micro switch contact 40 to enable the electric closing circuit of the circuit breaker to be disconnected, at the moment, the circuit breaker is in a closing and non-closing state, and the key can be pulled out, so that the main circuit breaker can be prevented from being mistakenly closed, and meanwhile, the key can be pulled out to unlock the closing operation of the bypass circuit breaker. So can ensure that main circuit breaker and bypass circuit breaker can not close a floodgate simultaneously.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a dual switch's circuit breaker mechanical interlocking device which characterized in that: the device comprises a bracket, a lock shaft and a limiting mechanism, wherein the lock shaft and the limiting mechanism are arranged on the bracket, the lock shaft is driven by a key matched with the lock shaft to move up and down, an interlocking fixing plate is fixedly arranged at the top end of the lock shaft, a closing button of a circuit breaker is positioned above the interlocking fixing plate, a pressing plate is fixedly arranged at the bottom end of the lock shaft, a micro switch contact capable of closing or breaking an electric closing loop of the circuit breaker is arranged below the pressing plate, and the limiting mechanism has two states of extension and retraction,
the key is rotated to an unlocking position, the lock shaft moves downwards along with the key, the pressure plate descends to press the micro switch contact to close an electric closing loop of the circuit breaker, the limiting mechanism is in an extending state to limit the interlocking fixing plate to enable the interlocking fixing plate not to move upwards, the lock shaft cannot move upwards, the key cannot rotate to a locking position, the circuit breaker is in a closing state at the moment, and the key cannot be pulled out;
the limiting mechanism returns to a backspacing state, the key is rotated to a locking position, the lock shaft moves upwards along with the key, the interlocking fixing plate rises and abuts against the closing button to enable the closing button not to be closed, meanwhile, the pressing plate rises to release the micro switch contact to enable the electric closing loop of the circuit breaker to be disconnected, the circuit breaker is in a switching-off and non-closing state at the moment, and the key can be pulled out.
2. The mechanical interlocking device for the circuit breaker of the dual-power switch as claimed in claim 1, characterized in that: the interlocking device comprises a support, a lock shaft, a limiting mechanism and an elastic reset piece, wherein the lock shaft is arranged at the front end of the support, the limiting mechanism is arranged on one side of the support, the limiting mechanism comprises an interlocking plate capable of moving back and forth, a driving structure for driving the interlocking plate to extend forwards to be in an extending state, and the elastic reset piece for enabling the interlocking plate to reset and retract to be in a retracting state, and the interlocking plate is positioned above the interlocking fixing plate when in the extending state.
3. The mechanical interlocking device for the circuit breaker of the dual-power switch as claimed in claim 2, characterized in that: the driving structure comprises a rotating piece hinged with the support and a fixing pin located on the interlocking plate, and the front side of the rotating piece abuts against the rear side of the fixing pin.
4. The mechanical interlocking device for the circuit breaker of the dual-power switch as claimed in claim 3, characterized in that: the rotating part comprises a closing and opening indicating plate and a rotating baffle, wherein the closing and opening indicating plate is hinged to the support, the closing and opening indicating plate can display 'closing' or 'opening', a clamping column matched with the clamping block is arranged on the upper portion of the rotating baffle, and the front side of the bottom of the rotating baffle abuts against the rear side of the fixing pin.
5. The mechanical interlocking device for the circuit breaker of the dual-power switch as claimed in claim 4, characterized in that: the switching-on and switching-off indicating plate and the rotating baffle plate are coaxially hinged on the bracket.
6. The mechanical interlocking device for the circuit breaker of the dual-power switch as claimed in claim 2, characterized in that: the interlocking plate is provided with waist-shaped holes arranged in the front and at the back, connecting shafts matched with the waist-shaped holes are arranged in the waist-shaped holes, and the connecting shafts are connected and fixed with the support.
7. The mechanical interlocking device for the circuit breaker of the dual-power switch as claimed in claim 2 or 6, characterized in that: the elastic reset piece is a tension spring, the rear end of the tension spring is installed on the support, and the front end of the tension spring is connected with the rear end of the interlocking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121651477.8U CN215527511U (en) | 2021-07-20 | 2021-07-20 | Circuit breaker mechanical interlocking device of dual-power switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121651477.8U CN215527511U (en) | 2021-07-20 | 2021-07-20 | Circuit breaker mechanical interlocking device of dual-power switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215527511U true CN215527511U (en) | 2022-01-14 |
Family
ID=79814072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121651477.8U Active CN215527511U (en) | 2021-07-20 | 2021-07-20 | Circuit breaker mechanical interlocking device of dual-power switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215527511U (en) |
-
2021
- 2021-07-20 CN CN202121651477.8U patent/CN215527511U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A mechanical interlocking device for circuit breakers with dual power switches Granted publication date: 20220114 Pledgee: Agricultural Bank of China Limited Xiamen Pilot Free Trade Zone Branch Pledgor: XIAMEN XEC ELECTRIC Co.,Ltd. Registration number: Y2024980022210 |