CN110224328B - Combined electrical apparatus - Google Patents
Combined electrical apparatus Download PDFInfo
- Publication number
- CN110224328B CN110224328B CN201910393756.XA CN201910393756A CN110224328B CN 110224328 B CN110224328 B CN 110224328B CN 201910393756 A CN201910393756 A CN 201910393756A CN 110224328 B CN110224328 B CN 110224328B
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- Prior art keywords
- interlocking
- grounding
- operation shaft
- switch
- cabinet door
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- 230000007246 mechanism Effects 0.000 claims abstract description 116
- 230000009471 action Effects 0.000 claims abstract description 38
- 238000002955 isolation Methods 0.000 claims description 56
- 230000005540 biological transmission Effects 0.000 claims description 35
- 230000006872 improvement Effects 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
- H01H2009/265—Interlocking, locking, or latching mechanisms for interlocking two or more switches with interlocking of more than two switches
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
A combined electrical appliance. Solves the problems of simple structure and unreliable interlocking of the prior combined electrical apparatus. The circuit breaker comprises a frame body, a mechanism box, a circuit breaker, an isolating switch, a grounding switch, a circuit breaker action shaft, an isolating operation shaft, a grounding operation shaft, a first interlocking mechanism, a second interlocking mechanism and a third interlocking mechanism, wherein the first interlocking mechanism is provided with a first state that the isolating operation shaft cannot be operated when the circuit breaker is closed and a second state that the isolating operation shaft is convenient to operate when the circuit breaker is opened, the second interlocking mechanism is provided with a first position which is interlocked with the action shaft of the circuit breaker when the disconnecting switch is opened to avoid the closing of the circuit breaker, and a second position which is unlocked to enable the action shaft of the circuit breaker to freely act when the disconnecting switch is closed. The invention is provided with the first interlocking mechanism, the second interlocking mechanism and the third interlocking mechanism, so that the circuit breaker is interlocked with the isolating switch and the isolating switch is interlocked with the grounding switch, the interlocking is reliable, and personnel and property loss caused by misoperation is avoided.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a combined electrical appliance.
Background
The combined electric appliance (composite apparatus) is a device which combines two or more electric appliances into a whole according to wiring requirements, and each electric appliance still keeps original performance. Compact structure, small appearance and installation size, convenient use, better coordination of the performance of each electric appliance, and low voltage combined electric appliance and high voltage combined electric appliance according to the voltage.
The high-voltage combined electrical apparatus is divided into an open type and a full-closed type according to an insulation structure. The former uses isolating switch or breaker as main body, and combines the current transformer, voltage transformer, cable head and other elements together. The high-voltage charging parts of all the component elements are sealed in a grounded metal shell, gas, oil or solid insulating medium with good insulating property is filled in the shell, and all the component elements (generally including a breaker, a disconnecting switch, a grounding switch, a voltage transformer, a current transformer, a bus, a lightning arrester, a cable terminal and the like) are sequentially connected and formed into a whole according to wiring requirements. The existing combined electrical apparatus is simple in structure, has a simple interlocking function, generally has no reverse interlocking function, and has a large potential safety hazard.
Disclosure of Invention
The invention provides a combined electrical appliance, which aims to solve the problems of simple structure and unreliable interlocking of the existing combined electrical appliance in the background technology.
The technical scheme of the invention is as follows: the combined electrical appliance comprises a frame body and a mechanism box, wherein the frame body is provided with a circuit breaker, a disconnecting switch, a grounding switch, a circuit breaker action shaft for controlling the circuit breaker to be switched on or off, a disconnecting operation shaft for operating the disconnecting switch to be switched on or off, a grounding operation shaft for operating the grounding switch to be switched on or off, and a first interlocking mechanism, a second interlocking mechanism and a third interlocking mechanism, wherein the third interlocking mechanism is used for enabling the disconnecting operation shaft and the grounding operation shaft to interlock with each other, the first interlocking mechanism is provided with a first state in which the disconnecting operation shaft cannot be operated when the circuit breaker is switched on and a second state in which the disconnecting operation shaft is convenient to operate when the circuit breaker is switched off, and the second interlocking mechanism is provided with a first position in which the disconnecting operation shaft is interlocked with the circuit breaker action shaft to avoid the circuit breaker to be switched on and a second position in which the disconnecting operation shaft is unlocked to enable the circuit breaker action shaft to act freely when the disconnecting switch is closed.
As an improvement of the invention, the mechanism box is provided with the isolating switch operation hole, the first interlocking mechanism comprises an interlocking movable plate, the interlocking movable plate is arranged in the mechanism box, the interlocking movable plate is provided with a first position for shielding the isolating switch operation hole and a second position for opening and exposing the isolating operation shaft to facilitate the operation of the isolating switch, and the interlocking movable plate is positioned at the first position when the circuit breaker is positioned at the closing position.
As a further improvement of the invention, the action shaft of the circuit breaker is propped against the interlocking moving plate through the transmission plate, and the transmission plate pushes the interlocking moving plate when the circuit breaker is closed, so that the interlocking moving plate shields the operation hole of the isolating switch.
As a further improvement of the invention, the second interlocking mechanism comprises an isolation driving piece, an isolation transmission assembly and a closing interlocking piece, wherein the isolation driving piece is connected with the closing interlocking piece through the isolation transmission assembly, and the closing interlocking piece is provided with a first position for interlocking with the action shaft of the circuit breaker to avoid closing the circuit breaker when the isolation switch is opened and a second position for unlocking the action shaft of the circuit breaker to freely act when the isolation switch is closed.
As a further improvement of the present invention, the third interlock mechanism has a first state of interlocking the isolation operation shaft when the ground switch is closed and a second state of unlocking the isolation operation shaft when the ground switch is open so that the isolation operation shaft is free to move, and the third interlock mechanism has a first position of interlocking the ground operation shaft when the isolation switch is closed and a second position of unlocking the ground operation shaft when the isolation switch is open.
As a further improvement of the invention, the third interlocking mechanism comprises a first interlocking cam, a second interlocking cam and a positioning wheel, wherein the outer surfaces of the first interlocking cam and the second interlocking cam are propped against the positioning wheel, and the positioning wheel is arranged on the frame body and is in sliding fit with the frame body.
As a further improvement of the invention, the first interlocking cam is provided with a first notch groove and a first interlocking convex surface, the second interlocking cam is provided with a second notch groove and a second interlocking convex surface, the positioning wheel is pressed into the second notch groove by the first interlocking convex surface to interlock with the grounding operation shaft when the isolation switch is closed, and the positioning wheel is pressed into the first notch groove by the second interlocking convex surface to interlock with the isolation operation shaft when the grounding switch is closed.
As a further improvement of the invention, the invention further comprises a fourth interlocking mechanism, wherein the fourth interlocking mechanism is provided with a first position for shielding the isolation operation shaft when the grounding switch is closed and a second position for unlocking the isolation operation shaft to enable the isolation operation shaft to freely act, and the fourth interlocking mechanism is positioned at the first position when the third interlocking mechanism is positioned at the first state.
The cabinet door interlocking mechanism comprises a cabinet door interlocking assembly and a grounding interlocking assembly, wherein the cabinet door interlocking assembly is provided with a first position for interlocking the cabinet door when the grounding switch is opened and a second position for unlocking the cabinet door when the grounding switch is closed so that the cabinet door can freely rotate, the grounding interlocking assembly is provided with a first state for interlocking the grounding operation shaft after the cabinet door is opened and a second state for unlocking so that the grounding operation shaft can freely rotate, and the grounding interlocking assembly is in the second state when the cabinet door interlocking assembly is in the second position.
The cabinet door interlocking assembly comprises a cabinet door locking plate and a movable plate, wherein the movable plate is inserted into the cabinet door locking plate when the cabinet door interlocking assembly is in a first position to realize cabinet door interlocking, the cabinet door locking plate is fixed on a cabinet door, the movable plate is arranged on a grounding operation shaft and driven by the grounding operation shaft to reciprocate, the grounding interlocking assembly comprises an interlocking rod and a driving plate, and the interlocking rod is provided with a first position for interlocking the grounding operation shaft after the cabinet door is opened and a second position for driving the cabinet door to unlock through the driving plate after the cabinet door is closed.
The invention has the beneficial effects that the first interlocking mechanism, the second interlocking mechanism and the third interlocking mechanism are arranged, so that the circuit breaker is interlocked with the isolating switch and the isolating switch is interlocked with the grounding switch, the interlocking is reliable, and personnel and property loss caused by misoperation is avoided. The invention also has the advantages of simple structure, convenient assembly, reliable action, long service life and the like.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic left-hand view of fig. 1.
Fig. 3 is a schematic view of the structure in the mechanism box in fig. 1.
Fig. 4 is a schematic view of the structure of fig. 3 with the first interlock mechanism removed.
Fig. 5 is a schematic view of the structure of fig. 3 in another direction.
Fig. 6 is a schematic view of the structure of fig. 3 in another direction.
Fig. 7 is a schematic view of the structure of fig. 6 in another direction.
Fig. 8 is a schematic view of the third interlock mechanism 8 of fig. 7.
Fig. 9 is a schematic view of the second interlock mechanism 7 of fig. 4.
Fig. 10 is a schematic view of the structure at the isolation drive assembly 72 of fig. 9.
Fig. 11 is a schematic structural view of the first interlock cam 81 of fig. 8.
In the figure, 1, a frame body; 11. a limiting hole; 2. a mechanism box; 21. isolating the switch operating hole; 22. a closing button; 23. a closing transmission assembly; 24. a ground switch operation hole; 3. a circuit breaker; 31. a breaker action shaft; 32. a drive plate; 4. an isolating switch; 41. isolating the operating shaft; 42. a connecting rod; 43. an isolating switch action shaft; 5. a grounding switch; 51. a ground operation shaft; 511. a notch groove; 52. a ground drive; 6. a first interlock mechanism; 61. an interlocking movable plate; 62. an interlocking fixing plate; 63. an isolation interlock mechanism; 631. a interlock pin; 632. a linkage plate; 7. a second interlock mechanism; 71. isolating the driver; 72. isolating the transmission assembly; 721. a first transmission member; 722. a second transmission member; 73. a closing interlocking piece; 8. a third interlock mechanism; 81. a first interlock cam; 811. a first notch groove; 812. a first interlocking convex surface; 813. an interlocking notch; 82. a second interlock cam; 821. a second notch groove; 822. a second interlocking convex surface; 83. a positioning wheel; 9. a fourth interlocking mechanism; 91. a grounding crank arm; 92. a shielding plate; 93. a guide chute; 10. a cabinet door interlocking mechanism; 101. a cabinet door interlocking assembly; 1011. a cabinet door lock plate; 1012. a movable plate; 102. a ground interlock assembly; 1021. an interlock lever; 1022. and a driving plate.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
The combined electrical appliance is shown by combining fig. 1 with fig. 2-11 and comprises a frame body 1 and a mechanism box 2, wherein the frame body 1 is provided with a circuit breaker 3, a disconnecting switch 4, a grounding switch 5, a circuit breaker action shaft 31 for controlling the circuit breaker 3 to be switched on or off, a disconnecting operation shaft 41 for operating the disconnecting switch 4 to be switched on or off, and a grounding operation shaft 51 for operating the grounding switch 5 to be switched on or off, and is characterized by further comprising a first interlocking mechanism 6, a second interlocking mechanism 7 and a third interlocking mechanism 8 for interlocking the disconnecting operation shaft 41 and the grounding operation shaft 51, the first interlocking mechanism 6 is provided with a first state in which the disconnecting operation shaft 41 cannot be operated when the circuit breaker 3 is switched on and a second state in which the disconnecting operation shaft 41 is convenient to operate when the circuit breaker 3 is switched off, and the second interlocking mechanism 7 is provided with a first position in which the disconnecting operation shaft 31 is prevented from being switched on when the disconnecting switch 4 is switched on and a second position in which the disconnecting operation shaft 31 is free to act when the disconnecting switch 4 is switched on. The invention has the beneficial effects that the first interlocking mechanism, the second interlocking mechanism and the third interlocking mechanism are arranged, so that the circuit breaker is interlocked with the isolating switch and the isolating switch is interlocked with the grounding switch, the interlocking is reliable, and personnel and property loss caused by misoperation is avoided. The invention also has the advantages of simple structure, convenient assembly, reliable action, long service life and the like.
The mechanism box 2 is provided with a disconnecting switch operation hole 21, the first interlocking mechanism 6 comprises an interlocking moving plate 61, the interlocking moving plate 61 is arranged in the mechanism box 2, the interlocking moving plate 61 is provided with a first position for shielding the disconnecting switch operation hole 21 and a second position for opening and exposing the disconnecting operation shaft 41 to facilitate the operation of the disconnecting switch 4, and the interlocking moving plate 61 is positioned at the first position when the circuit breaker 3 is positioned at the closing position.
The interlocking fixing plate 62 is arranged in the mechanism box, and the interlocking moving plate is arranged between the outer surface of the mechanism box and the interlocking fixing plate. The interlocking movable plate is arranged between the panel and the interlocking fixed plate, and can play a certain sliding guiding role, so that the interlocking movable plate acts reliably and stably.
The circuit breaker action shaft 31 is abutted against the interlocking moving plate 61 through the transmission plate 32, and the transmission plate 32 pushes the interlocking moving plate 61 when the circuit breaker 3 is closed, so that the interlocking moving plate 61 shields the disconnecting switch operation hole 21. Specifically, the action shaft of the circuit breaker is connected with a main shaft through a connecting rod assembly, the main shaft is provided with a main shaft rotating arm, and the main shaft rotating arm is connected with a transmission plate. The interlocking movable plate can be reset through the reset piece or driven by the transmission plate or manually to enable the isolating switch operation hole to correspond to the isolating operation shaft, so that the isolating switch can be conveniently operated when the circuit breaker is opened or closed, the interlocking movable plate can be reliably driven to move through the connecting rod assembly and the transmission rod, the isolating operation shaft is interlocked at the panel when the circuit breaker is closed, and misoperation of the isolating switch is avoided.
The frame body 1 is provided with an isolation interlocking mechanism 63, and the isolation interlocking mechanism is provided with a first position for locking the isolating switch when the circuit breaker is closed and a second position for unlocking the isolating switch when the circuit breaker is opened so as to enable the isolating switch to act. The isolating interlocking mechanism is arranged to enable the circuit breaker to realize interlocking on the isolating operation shaft during closing, so that misoperation of the isolating switch is avoided, and the safety performance of the product is high.
The isolating interlock mechanism 63 includes an interlock pin 631, the interlock pin is connected to the circuit breaker actuating shaft, the first interlock cam is disposed on the isolating actuating shaft, the interlock pin has a first position where the first interlock cam is locked when the circuit breaker is closed so that the isolating actuating shaft cannot operate, and a second position where the first interlock cam is unlocked when the circuit breaker is opened so that the isolating switch is actuated. Specifically, the action shaft of the circuit breaker is provided with a linkage plate, the linkage pin is arranged on the linkage plate and is driven by the linkage plate to horizontally move, the first linkage cam is rotatably arranged relative to the frame body, and the first linkage cam is provided with an linkage notch 813 for inserting the linkage pin. The interlocking pin and the first interlocking cam are matched to realize the interlocking of the isolation operation shaft, the interlocking pin is driven by the action shaft of the circuit breaker to move, and when the circuit breaker is switched on, the interlocking pin is inserted into the interlocking notch of the first interlocking cam to realize the interlocking of the isolation operation shaft, so that the structure is simple and the interlocking is reliable. According to the invention, the isolation misoperation is avoided by shielding the isolation operation shaft at the panel, the isolation operation shaft is prevented from rotating by inserting the first interlocking cam into the interlocking notch through the interlocking pin shaft, and the safety performance is better.
The isolating operation shaft is provided with a connecting rod, and the connecting rod is connected with the isolating switch action shaft and is used for driving the isolating switch to be opened or closed. The isolating operation shaft can reliably drive the isolating switch action shaft to act through the connecting rod by the structure, so that the isolating switch can be opened or closed rapidly.
The second interlocking mechanism 7 comprises an isolation driving piece 71, an isolation transmission assembly 72 and a closing interlocking piece 73, wherein the isolation driving piece 71 is connected with the closing interlocking piece 73 through the isolation transmission assembly 72, and the closing interlocking piece 73 is provided with a first position for interlocking with the circuit breaker action shaft 31 to avoid closing of the circuit breaker 3 when the isolating switch 4 is opened and a second position for unlocking to enable the circuit breaker action shaft 31 to freely act when the isolating switch 4 is closed. The invention is provided with the closing interlocking piece, and the isolation driving component is driven to vertically move by the rotation of the isolation driving piece, so that the interlocking and unlocking of the closing interlocking piece are realized. Specifically, the closing interlocking piece is hinged in the mechanism box and is in running fit with the mechanism box. The isolation driving piece is arranged on the isolation operation shaft and is connected with the isolation operation shaft in a linkage way. Therefore, the circuit breaker can be reliably interlocked through the rotation of the isolating operation shaft, and personnel and property loss caused by the switching-on circuit breaker when the isolating switch is opened can be avoided.
The mechanism box 2 is provided with a closing button for controlling the closing of the circuit breaker, the closing button is connected with an action shaft of the circuit breaker through a closing transmission assembly and is used for controlling the closing of the circuit breaker, and the closing interlocking piece is interlocked with the closing transmission assembly when the isolating switch is opened. Specifically, the switch-on button makes the action shaft of the breaker act through the switch-on transmission assembly, the switch-on/off operation of the breaker and the energy storage mechanism can adopt the existing operation mechanism, and the switch-on interlocking piece is interlocked with the switch-on transmission assembly when the isolating switch is opened, so that personnel and property loss caused by the switch-on breaker when the isolating switch is opened is avoided. Specifically, the interlocking of the isolating switch to the switching-on function of the circuit breaker is realized through the rotation of the limit switching-on transmission assembly.
The isolating transmission assembly comprises a first transmission part 721 and a second transmission part 722, wherein the isolating driving part is connected with the first transmission part, and the second transmission part is connected with the closing interlocking part. Specifically, the isolation driving piece is arranged on the isolation operation shaft and connected with the isolation operation shaft in a linkage way, and when the isolation switch is opened, the isolation driving piece drives the closing interlocking piece to rotate and limit the closing transmission assembly through vertical movement of the first transmission piece and the second transmission piece. More specifically, the switching-on interlocking piece on be equipped with drive slot and spacing portion, the second driving part on be equipped with and insert the drive slot in be used for driving switching-on interlocking piece pivoted drive portion, the second driving part on be equipped with the elastic component. The setting of drive division is convenient for reliably drive the rotation of drive combined floodgate interlocking piece fast, and the setting of elastic component is convenient for play the effect that resets and guarantee reliable interlocking for product interlocking is reliable, simple structure, and the action is steady.
The third interlocking mechanism 8 has a first state of interlocking the insulating operation shaft 41 when the ground switch 5 is closed and a second state of unlocking the insulating operation shaft 41 when the ground switch 5 is opened so that the insulating operation shaft 41 is free to move, and the third interlocking mechanism 8 has a first position of interlocking the insulating operation shaft 51 when the insulating switch 4 is closed and a second position of unlocking the insulating operation shaft 51 so that the insulating operation shaft 51 is free to move when the insulating switch 4 is opened. The third interlocking mechanism is arranged to enable the grounding switch to interlock and isolate the operation shaft when being closed, so that casualties caused by misoperation of the isolation operation shaft are avoided, and meanwhile, when the isolation is closed. The structure can realize the forward interlocking and the reverse interlocking of the isolating switch and the grounding switch through the third interlocking mechanism, namely, the isolating switch can interlock the grounding switch when being opened, the misoperation of the grounding switch is avoided to be closed, the grounding switch can reverse interlock the isolating switch when being closed, and the closing of the isolating switch is avoided. Therefore, the structure is simple, and the interlocking is reliable.
The third interlocking mechanism 8 comprises a first interlocking cam 81, a second interlocking cam 82 and a positioning wheel 83, wherein the outer surfaces of the first interlocking cam 81 and the second interlocking cam 82 are propped against the positioning wheel 83, and the positioning wheel 83 is arranged on the frame body 1 and is in sliding fit with the frame body 1. According to the invention, the first interlocking cam, the second interlocking cam and the positioning wheel are used for realizing the interlocking of the grounding switch and the isolating switch, so that the structure is simple, the action is stable, and the interlocking is reliable. The third interlocking mechanism and the mechanism box are arranged on two sides of the frame body, the space of the product is reasonably utilized, and the installation is convenient. Specifically, the first interlocking cam is arranged on the isolation operation shaft, the second interlocking cam is arranged on the grounding operation shaft, and the positioning wheel is arranged on the bracket and between the first interlocking cam and the second interlocking cam.
The first interlocking cam 81 is provided with a first notch groove 811 and a first interlocking convex surface 812, the second interlocking cam 82 is provided with a second notch groove 821 and a second interlocking convex surface 822, the positioning wheel 83 is pressed into the second notch groove 821 by the first interlocking convex surface 812 to interlock with the grounding operation shaft 51 when the disconnecting switch 4 is closed, and the positioning wheel 83 is pressed into the first notch groove 811 by the second interlocking convex surface 822 to interlock with the disconnecting operation shaft 41 when the grounding switch 5 is closed. The invention realizes the interlocking of the grounding switch and the isolating switch through the up-and-down movement of the positioning wheel and the cooperation of the positioning wheel, the notch groove and the interlocking convex surface, and has the advantages of simple structure, stable action and reliable interlocking. More specifically, through the arrangement of the interlocking pin and the first interlocking cam, the interlocking of the circuit breaker and the grounding switch can be realized, and the safety performance is high.
The frame body 1 is provided with a limiting hole 11, the positioning wheel is arranged between the outer surfaces of the first interlocking cam and the second interlocking cam, and the positioning wheel is arranged in the limiting hole and is in sliding fit with the frame body. Specifically, the first notch groove and the second notch groove are arc surfaces formed by inwards sinking, the positioning wheel is arranged in the limiting hole through the mounting pin, and the positioning wheel is sleeved on the mounting pin and can rotate around the mounting pin. The notch groove is convenient to be matched with the interlocking convex surface to lock the positioning wheel, so that the product can realize the interlocking of the grounding switch and the isolating switch through the positioning wheel, the structure is simple, the action is stable, and the interlocking is reliable. The cooperation of locating wheel and arcwall face again can be quick in the operation process realize operating mode change, simple structure, the action is reliable.
The invention further comprises a fourth interlocking mechanism 9, wherein the fourth interlocking mechanism 9 is provided with a first position for shielding the isolation operation shaft 41 when the grounding switch 5 is closed and a second position for unlocking the isolation operation shaft 41 to enable the isolation operation shaft 41 to freely act, and the fourth interlocking mechanism 9 is positioned at the first position when the third interlocking mechanism 8 is positioned at the first state. The fourth interlocking mechanism is arranged to enable the grounding switch to avoid the action of the isolation operation shaft when the grounding switch is switched on, and further interlock the isolation switch, so that the interlocking is reliable.
The fourth interlocking mechanism comprises a grounding crank arm 91, the grounding crank arm is arranged on a grounding operation shaft, a shielding plate 92 is arranged on the grounding crank arm, a disconnecting switch operation hole 21 and a grounding switch operation hole 24 are formed in a mechanism box, and the shielding plate is provided with a first position for shielding the disconnecting switch operation hole when the grounding switch is closed and a second position for unlocking and exposing the disconnecting operation shaft to enable the disconnecting operation shaft to freely act. The arrangement of the shielding plate prevents the handle from being inserted into the grounding switch to rotate and isolate the operation shaft when the grounding switch is switched on, and the structure is simple and the interlocking is reliable.
The grounding crank arm is connected with the shielding plate, the grounding crank arm is connected with the grounding operation shaft in a linkage mode, and the shielding plate horizontally reciprocates relative to the mechanism box. Specifically, the shielding plates are provided with guide sliding grooves 93 for inserting the pin shafts. The structure can reliably convert the rotation of the reception crank arm into the horizontal reciprocating motion of the linkage plate and the shielding plate, so that the shielding plate can rapidly and reliably move to shield the isolation operation shaft.
The invention further comprises a cabinet door interlocking mechanism 10, wherein the cabinet door interlocking mechanism 10 comprises a cabinet door interlocking assembly 101 and a grounding interlocking assembly 102, the cabinet door interlocking assembly 101 is provided with a first position for interlocking the cabinet door when the grounding switch 5 is opened and a second position for unlocking the cabinet door when the grounding switch 5 is closed so that the cabinet door can freely rotate, the grounding interlocking assembly 102 is provided with a first state for interlocking the grounding operation shaft 51 after the cabinet door is opened and a second state for unlocking so that the grounding operation shaft 51 can freely rotate, and the grounding interlocking assembly 102 is in the second state when the cabinet door interlocking assembly 101 is in the second position. The cabinet door interlocking assembly and the grounding interlocking assembly are arranged, so that the grounding switch and the cabinet door can realize forward interlocking and reverse interlocking, the cabinet door can be opened and closed only when the grounding switch is closed, the grounding switch can be operated when the cabinet door is closed, and the cabinet door interlocking mechanism is simple in structure and reliable in interlocking.
The cabinet door interlocking assembly 101 comprises a cabinet door locking plate 1011 and a movable plate 1012, wherein the movable plate 1012 is inserted into the cabinet door locking plate 1011 when the cabinet door interlocking assembly 101 is positioned at a first position to realize cabinet door interlocking, the cabinet door locking plate 1011 is fixed on a cabinet door, the movable plate 1012 is arranged on the grounding operation shaft 51 and is driven to reciprocate by the grounding operation shaft 51, the grounding interlocking assembly 102 comprises an interlocking rod 1021 and a driving plate 1022, and the interlocking rod 1021 is provided with a first position for interlocking the grounding operation shaft 51 after the cabinet door is opened and a second position for driving the cabinet door to be unlocked by the driving plate 1022 after the cabinet door is closed. The interlocking of the grounding switch and the cabinet door is realized through the matching of the movable plate and the cabinet door locking plate, so that the interlocking of products is reliable, and the safety performance is high. Specifically, the grounding operation shaft 51 is provided with a notch 511, and the interlocking rod is inserted into the notch after the cabinet door is opened to interlock with the grounding operation shaft. The interlocking of the grounding operation shaft is reliably realized through the movement of the interlocking rod, and when the cabinet door is opened, the interlocking rod is inserted into the notch groove of the grounding operation shaft to realize the interlocking of the grounding switch, so that the interlocking is reliable and the structure is simple.
The movable plate is arranged in the mechanism box, the grounding operation shaft is connected with the movable plate through the grounding crank arm 91 and drives the movable plate to reciprocate linearly relative to the mechanism box, and when the cabinet door interlocking assembly is in the first position, the movable plate penetrates out of the mechanism box and is inserted into the cabinet door locking plate to be mutually matched with the cabinet door locking plate so as to realize cabinet door interlocking. The shielding plate 92 is arranged on the grounding crank arm through a movable plate. The horizontal movement of the movable plate can be reliably inserted into the cabinet door to reliably realize the interlocking of the cabinet door when the grounding switch is opened, and the interlocking is reliable and has a simple structure.
The driving plate is hinged in the mechanism box, the driving plate is connected with the interlocking rod through a pin shaft, the interlocking rod is driven to linearly move through rotation of the driving plate when the cabinet door is closed, a reset piece is arranged between the pin shaft and the inner wall of the mechanism box, and the reset piece has a movement trend of driving the interlocking rod 61 to be inserted into a notch groove. The structure can drive the interlocking rod to unlock through the rotation of the driving plate, has simple structure and reliable action, can avoid the interlocking of the grounding operation shaft by the cabinet door when the cabinet door is closed, and can realize quick interlocking when the cabinet door is opened, and has simple structure, reliable interlocking and quick response.
Specifically, the grounding operation shaft is provided with a grounding driving piece, the grounding driving piece is connected with a closing interlocking piece, and the closing interlocking piece is provided with a first position for interlocking with the action shaft of the circuit breaker to avoid closing of the circuit breaker when the grounding switch is closed and a second position for unlocking the grounding switch when the grounding switch is opened. The switching-on interlocking piece is driven to vertically move through rotation of the grounding driving piece, so that interlocking and unlocking of the switching-on interlocking piece are realized. Specifically, the grounding driving piece drives the closing interlocking piece to act through the isolation transmission component. The grounding driving piece is arranged on the grounding operation shaft and is connected with the grounding operation shaft in a linkage manner. Therefore, the circuit breaker can be reliably interlocked through the rotation of the grounding operation shaft, and personnel and property loss caused by closing the circuit breaker when the grounding switch is closed can be avoided.
The power failure operation sequence of the invention is as follows: the circuit breaker is separated, the circuit breaker is in the brake-separating state, unblock first interlocking mechanism this moment, make the interlocking movable plate can slide relative mechanism case, make operating handle can operate isolator after the interlocking movable plate moves up, break off isolator, remove third interlocking mechanism, make the ground connection operating shaft can operate, interlock the circuit breaker action shaft through second interlocking mechanism this moment, the circuit breaker can not carry out the closing operation, after the ground connection switch is closed, make isolator be sheltered from by third interlocking mechanism and shielding plate, can not carry out the isolating switch operation, unblock cabinet door interlocking mechanism this moment, the cabinet door can be opened, the interlocking lever inserts the breach inslot of ground connection operating shaft after the cabinet door is opened, make the ground connection operating shaft can not rotate, the ground connection switch can not break brake. The power transmission operation sequence of the invention is as follows: the cabinet door is closed, so that the interlocking rod is unlocked with the grounding operation shaft, the grounding operation shaft can separate the grounding switch, the cabinet door cannot be opened after the grounding switch is separated, and the isolation operation shaft can act; closing the isolating switch, wherein the grounding operation shaft is interlocked and cannot rotate, the grounding switch cannot be closed, and the second interlocking mechanism is unlocked; when the second interlocking mechanism is unlocked, the action shaft of the circuit breaker can be operated through the energy storage mechanism, the closing button and the like, so that the circuit breaker is controlled to close, the power transmission operation is completed, and the isolating switch cannot be opened by interlocking.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The skilled person will know: while the invention has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the invention, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.
Claims (7)
1. A combined electrical appliance comprises a frame body (1) and a mechanism box (2), wherein the frame body (1) is provided with a circuit breaker (3), a disconnecting switch (4), a grounding switch (5), a circuit breaker action shaft (31) for controlling the circuit breaker (3) to be switched on or off, a disconnecting operation shaft (41) for operating the disconnecting switch (4) to be switched on or off, and a grounding operation shaft (51) for operating the grounding switch (5) to be switched on or off, the combined electrical appliance is characterized by further comprising a first interlocking mechanism (6), a second interlocking mechanism (7) and a third interlocking mechanism (8) for interlocking the disconnecting operation shaft (41) with the grounding operation shaft (51), the first interlocking mechanism (6) is provided with a first state in which the disconnecting operation shaft (41) cannot be operated when the circuit breaker (3) is switched on and a second state in which the disconnecting operation shaft (41) is convenient to operate when the circuit breaker (3) is switched off, the second interlocking mechanism (7) is provided with a second position in which the disconnecting operation shaft (31) cannot be operated when the disconnecting switch (4) is switched on and the circuit breaker action shaft (3) is free to be switched off, the third interlocking mechanism (8) is provided with a first state for interlocking the isolation operation shaft (41) when the grounding switch (5) is closed and a second state for unlocking the isolation operation shaft (41) when the grounding switch (5) is opened, the third interlocking mechanism (8) is provided with a first position for interlocking the grounding operation shaft (51) when the isolating switch (4) is closed and a second position for unlocking the grounding operation shaft (51) when the isolating switch (4) is opened, the third interlocking mechanism (8) comprises a first interlocking cam (81), a second interlocking cam (82) and a positioning wheel (83), the outer surfaces of the first interlocking cam (81) and the second interlocking cam (82) are respectively abutted against the positioning wheel (83), the positioning wheel (83) is arranged on the frame body (1) and is in sliding fit with the frame body (1), the cabinet door interlocking mechanism (10) comprises a cabinet door interlocking assembly (101) and a grounding assembly (102), the cabinet door assembly is provided with a second interlocking position for enabling the cabinet door to freely move when the second interlocking cam (82) is opened and the second interlocking cam (101) is opened, the grounding interlocking assembly (102) is provided with a first state for interlocking the grounding operation shaft (51) after the cabinet door is opened and a second state for unlocking the grounding operation shaft (51) to rotate freely, and the grounding interlocking assembly (102) is in the second state when the cabinet door interlocking assembly (101) is in the second position.
2. The combined electrical appliance according to claim 1, wherein the mechanism box (2) is provided with a disconnecting switch operation hole (21), the first interlocking mechanism (6) comprises an interlocking moving plate (61), the interlocking moving plate (61) is arranged in the mechanism box (2), the interlocking moving plate (61) is provided with a first position for shielding the disconnecting switch operation hole (21) and a second position for opening and exposing the disconnecting operation shaft (41) so as to be convenient for operating the disconnecting switch (4), and the interlocking moving plate (61) is positioned in the first position when the circuit breaker (3) is positioned in the closing position.
3. The combined electrical appliance according to claim 2, wherein the circuit breaker actuating shaft (31) is abutted against the interlocking moving plate (61) through the transmission plate (32), and the transmission plate (32) pushes the interlocking moving plate (61) and enables the interlocking moving plate (61) to shield the disconnecting switch operating hole (21) when the circuit breaker (3) is closed.
4. A combined electrical appliance according to claim 1, characterized in that the second interlocking mechanism (7) comprises an isolation driving part (71), an isolation transmission assembly (72) and a closing interlocking part (73), wherein the isolation driving part (71) is connected with the closing interlocking part (73) through the isolation transmission assembly (72), and the closing interlocking part (73) is provided with a first position for interlocking with a breaker action shaft (31) to avoid closing of the breaker (3) when the isolating switch (4) is opened and a second position for unlocking to enable the breaker action shaft (31) to act freely when the isolating switch (4) is closed.
5. The combined electrical appliance according to claim 1, wherein the first interlocking cam (81) is provided with a first notch groove (811) and a first interlocking convex surface (812), the second interlocking cam (82) is provided with a second notch groove (821) and a second interlocking convex surface (822), the positioning wheel (83) is pressed into the second notch groove (821) by the first interlocking convex surface (812) when the disconnecting switch (4) is closed to be connected with the grounding operation shaft (51), and the positioning wheel (83) is pressed into the first notch groove (811) by the second interlocking convex surface (822) when the grounding switch (5) is closed to be connected with the grounding operation shaft (41).
6. A combined electrical appliance according to claim 1, further comprising a fourth interlocking mechanism (9), said fourth interlocking mechanism (9) having a first position in which the isolating operation shaft (41) is blocked when the earthing switch (5) is closed, and a second position in which unlocking the isolating operation shaft (41) leaves the isolating operation shaft (41) free to move, said fourth interlocking mechanism (9) being in the first position when said third interlocking mechanism (8) is in the first state.
7. The combined electrical appliance according to claim 1, wherein the cabinet door interlocking assembly (101) comprises a cabinet door locking plate (1011) and a movable plate (1012), the movable plate (1012) is inserted into the cabinet door locking plate (1011) to realize cabinet door interlocking when the cabinet door interlocking assembly (101) is in a first position, the cabinet door locking plate (1011) is fixed on the cabinet door, the movable plate (1012) is arranged on the grounding operation shaft (51) and is driven to reciprocate by the grounding operation shaft (51), the grounding interlocking assembly (102) comprises an interlocking rod (1021) and a driving plate (1022), and the interlocking rod (1021) is provided with a first position for interlocking the grounding operation shaft (51) after the cabinet door is opened and a second position for driving the cabinet door to be unlocked by the driving plate (1022) after the cabinet door is closed.
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| CN201910393756.XA CN110224328B (en) | 2019-05-13 | 2019-05-13 | Combined electrical apparatus |
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| CN201910393756.XA CN110224328B (en) | 2019-05-13 | 2019-05-13 | Combined electrical apparatus |
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| CN110224328A CN110224328A (en) | 2019-09-10 |
| CN110224328B true CN110224328B (en) | 2024-09-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110768136B (en) * | 2019-09-11 | 2020-11-06 | 辽宁电能发展股份有限公司 | Low-voltage distribution box |
| CN110768127B (en) * | 2019-09-11 | 2020-11-10 | 辽宁电能发展股份有限公司 | Outdoor comprehensive low-voltage distribution box |
| CN110676747B (en) * | 2019-10-24 | 2021-12-24 | 徐州锋通信息科技有限公司 | Combined multi-loop high-voltage explosion-proof power distribution device |
| CN110783132A (en) * | 2019-11-09 | 2020-02-11 | 江西普雷伊顿电气有限公司 | An isolating switch and grounding interlocking device |
| CN118197855B (en) * | 2021-11-30 | 2025-05-09 | 俊郎电气有限公司 | Outdoor vacuum circuit breaker |
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| CN104409273B (en) * | 2014-10-29 | 2016-07-06 | 浙江道笃智能开关有限公司 | Pole type High-Voltage Electrical Appliances cubicle switch |
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| CN108320946A (en) * | 2018-01-09 | 2018-07-24 | 河南森源电气股份有限公司 | A kind of switchgear and its disconnecting switch and breaker interlock |
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