CN212113552U - Three-station vacuum circuit breaker - Google Patents
Three-station vacuum circuit breaker Download PDFInfo
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- CN212113552U CN212113552U CN202020947901.2U CN202020947901U CN212113552U CN 212113552 U CN212113552 U CN 212113552U CN 202020947901 U CN202020947901 U CN 202020947901U CN 212113552 U CN212113552 U CN 212113552U
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Abstract
The invention relates to a three-station vacuum circuit breaker, which comprises a case, a grounding operation shaft, an isolation operation shaft, an operation panel, a circuit breaker driving main shaft, a circuit breaker closing operation button and a circuit breaker opening operation button, wherein an interlocking pull plate is arranged on the operation panel, and the alternative of grounding operation and isolation operation is realized by pulling the interlocking pull plate; the grounding switching-on locking piece is arranged on the grounding operation shaft, the isolating switching-on locking piece is arranged on the isolating operation shaft and is matched with the pulling plate interlocking pin on the interlocking pulling plate, and therefore when grounding switching-on or isolating switching-on is carried out, the interlocking pulling plate is locked and cannot move; an isolation interlocking cover plate is arranged, and a transmission assembly is arranged between a circuit breaker driving main shaft and the isolation interlocking cover plate to realize that the isolation interlocking cover plate covers an isolation operation hole when a circuit breaker mechanism is switched on; the isolation interlocking shifting fork, the isolation interlocking piece and the circuit breaker mechanism interlocking plate are arranged to realize that a circuit breaker closing operation button cannot be operated when the isolation opening is carried out.
Description
Technical Field
The invention relates to a three-station vacuum circuit breaker.
Background
The three-station vacuum circuit breaker integrates a vacuum circuit breaker, an isolating switch and a grounding switch. The three-station vacuum circuit breaker needs to operate the circuit breaker mechanism, the isolating switch and the grounding switch during operation, and needs to operate according to a specified sequence in the operation process, and corresponds to non-professional personnel according to the sequence of grounding opening, isolating closing and circuit breaker closing during power-on and according to the sequence of circuit breaker opening, isolating opening and grounding closing during power-off, so that the operation is easy to make mistakes, and further accidents are easy to happen.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a three-position vacuum circuit breaker.
The technical scheme adopted by the invention is as follows: a three-station vacuum circuit breaker comprises a case, a grounding operation shaft, an isolation operation shaft, an operation panel, a circuit breaker driving main shaft, a circuit breaker closing operation button and a circuit breaker opening operation button, wherein the case is fixedly connected with the operation panel, the operation panel is provided with a grounding operation hole and an isolation operation hole, a handle can be connected through the grounding operation hole to manually operate the grounding operation shaft, the isolation operation shaft can be manually operated through the isolation operation hole, and the circuit breaker driving main shaft can be rotated to a closing position or an opening position by pressing the circuit breaker closing operation button or the circuit breaker opening operation button;
the outer surface of the operation panel is connected with an interlocking pull plate, and a grounding operation window and an isolating operation window are arranged on the interlocking pull plate;
the interlocking pull plate can slide relative to the operation panel, and is provided with a first position at which the grounding operation window faces the grounding operation hole to enable the grounding operation hole to be exposed and operable and the isolating operation window is staggered with the isolating operation hole to enable the isolating operation hole to be shielded and inoperable, and a second position at which the isolating operation window faces the isolating operation hole to enable the isolating operation hole to be exposed and operable and the grounding operation window is staggered with the grounding operation hole to enable the grounding operation hole to be shielded and inoperable;
the grounding operation shaft is circumferentially connected with a grounding closing locking piece in a linkage manner, the isolation operation shaft is circumferentially connected with an isolation closing locking piece in a linkage manner, a pulling plate interlocking pin is fixedly arranged on the interlocking pulling plate, and an opening through which the pulling plate interlocking pin passes is formed in the operation panel;
when the interlocking pulling plate is located at the first position and the grounding operation shaft is located at the grounding switching-on position, the grounding switching-on locking piece is located on a path of the interlocking pulling plate interlocking pin moving from the first position to the second position, and a locking effect is formed on the interlocking pulling plate, so that the interlocking pulling plate cannot move to the second position;
when the interlocking pulling plate is located at the second position and the isolation operation shaft is located at the isolation switching-on position, the isolation switching-on locking piece is located on a path of the interlocking pulling plate interlocking pin moving from the second position to the first position, and a locking effect is formed on the interlocking pulling plate, so that the interlocking pulling plate cannot move to the first position;
the isolation interlocking cover plate is connected to the case, can slide relative to the case and is provided with a third position which blocks the isolation operation hole to enable the isolation operation shaft not to be operated and a fourth position which leaves a region in front of the isolation operation hole to enable the isolation operation shaft to be exposed and to be operated on a sliding path; a transmission assembly is arranged between the isolation interlocking cover plate and the circuit breaker driving main shaft, and when the circuit breaker driving main shaft is in at least part of paths of rotary driving opening and closing, the isolation interlocking cover plate slides to a third position and/or a fourth position through the transmission assembly; when the breaker driving main shaft is in a switching-on position, the isolation interlocking cover plate is located at a third position; when the breaker driving main shaft is in a brake separating position, the isolation interlocking cover plate is located at a fourth position;
the interlocking device is characterized in that an isolation interlocking shifting fork is connected to the isolation operating shaft in a linkage mode, an isolation interlocking piece is connected to the case in a hinged mode through a fourth hinged shaft, a circuit breaker mechanism interlocking plate is connected to the case, one end of the circuit breaker mechanism interlocking plate is provided with a baffle portion, the other end of the circuit breaker mechanism interlocking plate is provided with a first pushing portion, the two ends of the isolation interlocking piece are matched with the first pushing portion and the isolation interlocking shifting fork respectively, the circuit breaker mechanism interlocking plate can slide along a straight line relative to the case, when the isolation operating shaft is in a brake separating position, the circuit breaker mechanism interlocking plate is located at a fifth position where the baffle portion blocks a circuit breaker closing operating button, and when the isolation operating shaft is in a brake closing position, the circuit breaker mechanism interlocking plate is located at a sixth position where the baffle portion leaves the front of the circuit breaker closing.
The operating panel is provided with a grounding state indicating window and an isolation state indicating window, the grounding closing locking piece comprises a grounding state indicating part, the isolation closing locking piece comprises an isolation state indicating part, the grounding state indicating part displays and indicates a grounding opening state or a grounding closing state in the grounding state indicating window, and the isolation state indicating part displays and indicates an isolation opening state or an isolation closing state in the isolation state indicating window;
the interlocking arm-tie is last to correspond ground connection state indication window and to keep apart the state indication window and be equipped with ground connection state indication bar hole and keep apart the state indication bar hole respectively, on the route that moves to the second place from the primary importance, through ground connection state indication bar hole and keep apart the state indication bar hole, ground connection state indication window and keep apart the state indication window and be visual state.
The interlocking pull plate is positioned between the grounding state indicating strip-shaped hole and the isolating state indicating strip-shaped hole, the part of the grounding state indicating part corresponding to grounding switch-on is protruded away from the outer edge of the grounding operation shaft to form a grounding switch-on locking part, and when the interlocking pull plate is positioned at a first position and the grounding operation shaft is positioned at a grounding switch-on position, the grounding switch-on locking part is positioned at one side of the direction in which the interlocking pull plate moves to a second position;
when the interlocking pulling plate is located at the second position and the isolating operation shaft is located at the isolating switching-on position, the isolating switching-on locking part is located on one side of the direction in which the pulling plate interlocking pin moves towards the first position.
The transmission assembly comprises a main shaft driving crank arm, an isolation cover plate connecting rod and an isolation cover plate shifting piece; one end of the main shaft driving crank arm is fixed on the circuit breaker driving main shaft and is in linkage fit with the circuit breaker driving main shaft, and the other end of the main shaft driving crank arm is hinged with one end of the isolation cover plate connecting rod through a first hinge shaft; one end of the isolating cover plate shifting piece is hinged with the case through a second hinge shaft, and the other end of the isolating cover plate shifting piece is arranged on one side of the isolating interlocking cover plate or connected with the isolating interlocking cover plate; the other end of the isolation cover plate connecting rod is hinged to the isolation cover plate shifting piece through a third hinge shaft, the other end of the isolation cover plate shifting piece is arranged on one side of the isolation interlocking cover plate, and a first reset spring is connected to the isolation interlocking cover plate.
The isolation operation window is a groove which is arranged at one end edge of the interlocking pulling plate close to the isolation interlocking cover plate at one side of the direction of moving from the second position to the first position, and when the interlocking pulling plate is positioned at the second position and the isolation interlocking cover plate is positioned at the third position, the isolation interlocking cover plate is positioned in the isolation operation window
The cabinet door is provided with a door locking plate, and the door locking plate is provided with a locking groove;
the grounding switch-on locking piece comprises a grounding interlocking shifting piece sleeved on the grounding operation shaft, the grounding interlocking shifting piece is connected with the grounding state indicating part through a connecting pin, and the end part of the connecting pin protrudes out of the surface of the grounding interlocking shifting piece; a door lock bolt is sleeved on the end part of the connecting pin, a through groove is formed in the case, the door lock bolt penetrates through the through groove, and the width of the door lock bolt is smaller than that of the through groove;
when the grounding operation shaft is in the opening position, one end of the door lock bolt, which is far away from the connecting pin, is located at a seventh position where the door lock bolt can extend into a lock groove on the cabinet door in a door closing state to form a door locking effect;
when the grounding operation shaft is in the switching-on position, one end of the door lock bolt, which is far away from the connecting pin, is located at an eighth position where the door locking effect is released between the door locking plate and the outer surface of the case or in the through groove.
A cabinet door interlocking pin is arranged in the case, is limited in the case and can slide along the axial direction of the case relative to the case;
the operating panel is provided with a grounding operating sleeve, the end part of the grounding operating shaft extends into the grounding operating sleeve, and when the grounding handle is inserted into the grounding operating sleeve and is sleeved outside the grounding operating shaft, the grounding switch-on/switch-off can be manually operated; the grounding operation sleeve is provided with a first through hole, and the interlocking pin of the cabinet door has a ninth position and a tenth position, wherein the ninth position and the tenth position are respectively provided with an end part which penetrates through the first through hole and extends into the grounding operation sleeve to form a locking action relative to the cabinet along the axial sliding path of the cabinet door, so that the grounding handle cannot be sleeved outside the grounding operation shaft, and the tenth position is provided with a unlocking action to enable the grounding handle to be sleeved outside the grounding operation shaft;
a transmission mechanism is arranged between the cabinet door and the cabinet door interlocking pin, when the cabinet door is in an open state, the cabinet door interlocking pin is in a first position, and when the cabinet door is in a closed state, the cabinet door interlocking pin is in a second position.
Also includes:
the grounding positioning disc is sleeved on the grounding operation shaft, is in linkage fit with the grounding operation shaft, and is provided with a grounding separating brake positioning groove and an isolation separating brake positioning cam;
the isolation positioning disc is sleeved on the isolation operation shaft, is in linkage fit with the isolation operation shaft, and is provided with an isolation separating brake positioning groove and a grounding separating brake positioning cam;
one end of the interlocking bracket is hinged with the case through a fifth hinge shaft, the other end of the interlocking bracket is connected with an interlocking block,
the interlocking block is positioned between the grounding positioning plate and the isolating positioning plate;
when the grounding operation shaft is at a grounding switch-on position and the isolating operation shaft is at an isolating switch-off position, the isolating switch-off positioning cam on the grounding positioning plate is matched with the interlocking block to be positioned in the isolating switch-off positioning groove to lock the isolating positioning plate;
when the isolation operation shaft is at an isolation switching-on position and the grounding operation shaft is at a grounding switching-off position, the grounding switching-off positioning cam on the isolation positioning plate is matched with the interlocking block to be positioned in the grounding switching-off positioning groove to form a locking effect on the grounding positioning plate.
The invention has the following beneficial effects: an interlocking pull plate is arranged on the operation panel, and the alternative of grounding operation and isolation operation is realized by pulling the interlocking pull plate; the grounding switching-on locking piece is arranged on the grounding operation shaft, the isolating switching-on locking piece is arranged on the isolating operation shaft and is matched with the pulling plate interlocking pin on the interlocking pulling plate, and therefore when grounding switching-on or isolating switching-on is carried out, the interlocking pulling plate is locked and cannot move; an isolation interlocking cover plate is arranged, and a transmission assembly is arranged between a circuit breaker driving main shaft and the isolation interlocking cover plate to realize that the isolation interlocking cover plate covers an isolation operation hole when a circuit breaker mechanism is switched on; the isolation interlocking shifting fork, the isolation interlocking piece and the circuit breaker mechanism interlocking plate are arranged to realize that a circuit breaker closing operation button cannot be operated when the isolation opening is carried out. Through a series of interlocking mechanisms, the sequence of grounding opening, isolating closing and circuit breaker closing is realized during power-on, and the sequence of circuit breaker opening, isolating opening and grounding closing is realized during power-off.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of an operating face of a three-position vacuum circuit breaker;
FIG. 2 is a schematic view of the structural coordination relationship between the breaker driving spindle and the isolating interlock cover plate when closing;
fig. 3 is a schematic view of a matching relationship of an operation panel, an interlocking pull plate and an isolating interlocking cover plate when a main shaft of a circuit breaker is driven to close;
fig. 4 is a schematic diagram of a matching relationship between an interlocking pull plate and an isolation switching-on locking element and a grounding switching-on locking element when an isolating switch is switched on;
fig. 5 is a schematic view of a structural matching relationship between an isolation operation shaft and a breaker closing operation button when a breaker driving main shaft is closed;
FIG. 6 is a schematic view of the structural fit relationship between the breaker and the isolation interlock cover plate when the main shaft is driven to open;
FIG. 7 is a schematic diagram showing the matching relationship between the operation panel, the interlock pull plate and the isolation interlock cover plate when the main shaft is driven by the circuit breaker to open the brake;
fig. 8 is a schematic view of a matching relationship between an interlocking pull plate and an isolation closing locking piece and a grounding closing locking piece when an isolating switch is opened;
fig. 9 is a schematic view of a matching relationship between an interlocking pull plate and an isolation switching-on locking member and a grounding switching-on locking member when a grounding switch is switched on;
fig. 10 is a schematic view of a structural matching relationship between an isolation operation shaft and a breaker closing operation button when the isolation switch is opened;
fig. 11 is a schematic view of another angle of the three-position vacuum circuit breaker;
fig. 12 shows the structural matching relationship among the grounding positioning plate, the isolating positioning plate, the interlocking support and the interlocking block, where (a) is the grounding switching-on and isolating switching-off position, and (b) is the isolating switching-on and grounding switching-off position;
FIG. 13 is a schematic view of the position of the latch of the door lock relative to the chassis during ground opening;
FIG. 14 is a schematic diagram of the position of the latch of the door lock relative to the chassis during ground closing;
FIG. 15 is a schematic view of the structure of the interlocking pin related part of the cabinet door;
FIG. 16 is a schematic structural diagram (a) of the upper end portion of the door lock pin cooperating with other structures when the cabinet door is opened and a schematic structural diagram (b) of the lower end portion of the door lock pin cooperating with other structures;
FIG. 17 is a schematic structural diagram (a) of the upper end portion of the door lock pin cooperating with other structures when the cabinet door is closed and a schematic structural diagram (b) of the lower end portion of the door lock pin cooperating with other structures;
FIG. 18 is a schematic structural diagram of a portion of a chassis;
FIG. 19 is a schematic view of a door latch construction;
in the figure, 1, a chassis; 101, a through groove; 2, grounding the operating shaft; 3, isolating the operating shaft; 4, an operation panel; 401, grounding an operation hole; 402, isolating the operation hole; 403, a grounded state indication window; 404, an isolation status indication window; 405, opening a hole; 406, a grounding operating sleeve; 407, a first perforation; 6, interlocking the pulling plate; 601, grounding an operation window; 602, isolating the operating window; 603, a pulling plate interlocking pin; 7, isolating a closing locking piece; 701, an isolation state indicating part; 8, a breaker driving main shaft; 9, a grounding closing locking piece; 901, a grounding state indicator; 903, a grounding interlock paddle; 904, a connecting pin; 10, isolating the interlocking cover plate; 11, isolating the interlocking shift fork; 12, a fourth articulated shaft; 13, isolating the interlocking sheet; 14, a circuit breaker mechanism interlock plate; 1401, a baffle portion; 1402, a first pushing part; 15, the main shaft drives the crank arm; 16, an isolation cover plate connecting rod; 17, isolating the cover plate shifting piece; 18, a first hinge axis; 19, a second hinge shaft; 20, a door lock plate; 21, a door lock bolt; 22, interlocking pins of the cabinet door; 23, a breaker closing operation button; 24, a breaker opening operation button; 25, grounding a positioning plate; 2501, a grounding separating brake positioning groove; 2502, isolating the opening positioning cam; 26, isolating the positioning disc; 2601, isolating the separating gate positioning groove; 2602, a grounding opening positioning cam; 27, an interlocking bracket; 28, a fifth hinge axis; 29, an interlocking block; 30, a third hinge shaft; 31, interlocking the loose leaves; 32, a support member; 33, a sixth hinge shaft; 34, a third return elastic element; 35, a first return spring; 36, a seventh hinge shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
The terms of direction and position of the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the present invention.
As shown in the figure, the three-station vacuum circuit breaker comprises a case 1, a grounding operation shaft 2, an isolation operation shaft 3, an operation panel 4, a circuit breaker driving main shaft 8, a circuit breaker closing operation button 23 and a circuit breaker opening operation button 24, wherein the case 1 is fixedly connected with the operation panel 4, a grounding operation hole 401 and an isolation operation hole 402 are arranged on the operation panel 4, the grounding operation shaft 2 can be manually operated by connecting a handle through the grounding operation hole 401, the isolation operation shaft 3 can be manually operated through the isolation operation hole 402, and the circuit breaker driving main shaft 8 can be rotated to a switching-on position or a switching-off position by pressing the circuit breaker closing operation button 23 or the circuit breaker opening operation button 24;
the outer surface of the operation panel 4 is connected with an interlocking pull plate 6, and the interlocking pull plate 6 is provided with a grounding operation window 601 and an isolating operation window 602;
the interlocking pull plate 6 is slidable relative to the operation panel 4, and has a first position where the grounding operation window 601 faces the grounding operation hole 401 to expose the grounding operation hole 401 to be operable and the isolation operation window 602 is staggered from the isolation operation hole 402 to shield the isolation operation hole 402 from being operable, and a second position where the isolation operation window 602 faces the isolation operation hole 402 to expose the isolation operation hole 402 to be operable and the grounding operation window 601 is staggered from the grounding operation hole 401 to shield the grounding operation hole 401 from being operable;
a grounding switch-on locking piece 9 is connected to the grounding operation shaft 2 in a circumferential linkage manner, an isolating switch-on locking piece 7 is connected to the isolating operation shaft 3 in a circumferential linkage manner, a pulling plate interlocking pin 603 is fixedly arranged on the interlocking pulling plate 6, and an opening 405 for the pulling plate interlocking pin 603 to pass through is formed in the operation panel 4;
when the interlocking pulling plate 6 is located at the first position and the grounding operation shaft 2 is located at the grounding closing position, the grounding closing locking piece 9 is located on a path of the pulling plate interlocking pin 603 moving from the first position to the second position to form a locking effect on the interlocking pulling plate 6, so that the interlocking pulling plate 6 cannot move to the second position;
when the interlocking pulling plate 6 is located at the second position and the isolation operation shaft 3 is located at the isolation switching-on position, the isolation switching-on locking piece 7 is located on a path of the pulling plate interlocking pin 603 moving from the second position to the first position to form a locking effect on the interlocking pulling plate 6, so that the interlocking pulling plate 6 cannot move to the first position;
an isolation interlocking cover plate 10 is connected to the case 1, the isolation interlocking cover plate 10 can slide relative to the case 1, and a third position which blocks the isolation operation hole 402 to prevent the isolation operation shaft 3 from being operated and a fourth position which is away from the front area of the isolation operation hole 402 to expose the isolation operation shaft 3 for operation are arranged on a sliding path; a transmission assembly is arranged between the isolation interlocking cover plate 10 and the breaker driving main shaft 8, and when the breaker driving main shaft 8 is in at least part of paths of rotary driving opening and closing, the isolation interlocking cover plate 10 is slid to a third position and/or a fourth position through the transmission assembly; when the breaker driving main shaft 8 is at the switching-on position, the isolation interlocking cover plate 10 is located at the third position; when the breaker driving main shaft 8 is in the opening position, the isolation interlocking cover plate 10 is located at the fourth position;
an isolation interlocking shifting fork 11 is connected on the isolation operating shaft 3 in a linkage manner, an isolation interlocking sheet 13 is hinged on the case 1 through a fourth hinge shaft 12, a circuit breaker interlocking plate 14 is connected to the cabinet 1, one end of the circuit breaker interlocking plate 14 is provided with a baffle portion 1401, and the other end is provided with a first pushing portion 1402, the two ends of the isolation interlocking piece 13 are respectively matched with the first pushing part 1402 and the isolation interlocking shifting fork 11, the circuit breaker interlocking plate 14 can slide along a straight line relative to the case 1, when the disconnecting operation shaft 3 is at the opening position, the breaker mechanism interlock plate 14 is located at the fifth position where the shutter portion 1401 blocks the breaker closing operation button 23, and, when the disconnecting operation shaft 3 is at the closing position, the breaker mechanism interlock plate 14 is located at a sixth position where the shutter portion 1401 is separated from the breaker closing operation button 23 and the breaker closing operation button 23 is exposed to be pressed.
The isolation interlocking piece is provided with two first convex blocks which are spaced at a certain distance, and the first pushing part is limited between the two first convex blocks. When the isolation interlocking piece rotates, the relative height of the first convex blocks changes, the first pushing part is arranged between the two first convex blocks, and the height position of the first convex blocks relative to the first pushing part changes, but the transmission relation is still kept.
The side surface of the first bump is a cylindrical surface. When the isolation interlocking piece rotates to push the circuit breaker mechanism interlocking plate to slide along a straight line or the circuit breaker mechanism interlocking plate slides along a straight line to push the isolation interlocking piece to rotate, friction exists between the first protruding block and the first pushing portion, and friction is reduced through arrangement of the cylindrical surface.
The isolation interlocking piece is provided with a second lug, the second lug is positioned on at least part of a path where the isolation interlocking shifting fork moves when the isolation operating shaft rotates to the opening position from the closing position, and the isolation interlocking piece and/or the circuit breaker mechanism interlocking plate are/is provided with a first reset spring enabling the circuit breaker mechanism interlocking plate to return to the second position. The first return spring is not shown in the drawings, and specifically, the first return spring may be provided between the circuit breaker mechanism interlock plate and the rack or between the isolation interlock piece and the rack.
The operating panel 4 is provided with a grounding state indicating window 403 and an isolation state indicating window 404, the grounding closing locking piece 9 comprises a grounding state indicating part 901, the isolation closing locking piece 7 comprises an isolation state indicating part 701, the grounding state indicating part 901 displays and indicates a grounding opening state or a grounding closing state in the grounding state indicating window 403, and the isolation state indicating part 701 displays and indicates an isolation opening state or an isolation closing state in the isolation state indicating window 404;
the interlocking arm-tie 6 is last to correspond ground state instruction window 403 and isolation state instruction window 404 and be equipped with ground state instruction bar hole and isolation state instruction bar hole respectively, and on the route of moving to the second place from the first place, through ground state instruction bar hole and isolation state instruction bar hole, ground state instruction window 403 and isolation state instruction window 404 are visual state. The grounding state indicating part 601 and the isolation state indicating part 701 are marked to be opened or closed through characters, patterns or colors.
The pulling plate interlocking pin 603 is located between the grounding state indicating strip-shaped hole and the isolating state indicating strip-shaped hole, the part of the grounding state indicating part 901 corresponding to the grounding switch-on is protruded away from the outer edge of the grounding operation shaft 2 to form a grounding switch-on locking part, and when the interlocking pulling plate 6 is located at the first position and the grounding operation shaft 2 is located at the grounding switch-on position, the grounding switch-on locking part is located at one side of the direction in which the pulling plate interlocking pin 603 moves towards the second position;
the part of the isolation state indicating part 701 corresponding to the isolation switch-on is away from the outer edge of the isolation operation shaft 3 to form an isolation switch-on locking part, and when the interlocking pulling plate 6 is located at the second position and the isolation operation shaft 3 is located at the isolation switch-on position, the isolation switch-on locking part is located on one side of the direction in which the pulling plate interlocking pin 603 moves towards the first position.
The transmission assembly comprises a main shaft driving crank arm 15, an isolation cover plate connecting rod 16 and an isolation cover plate shifting piece 17; one end of the main shaft driving crank arm 15 is fixed on the breaker driving main shaft 8 and is in linkage fit with the breaker driving main shaft 8, and the other end of the main shaft driving crank arm is hinged with one end of the isolating cover plate connecting rod 16 through a first hinge shaft 18; one end of the isolating cover plate shifting piece 17 is hinged with the case 1 through a second hinge shaft 19, and the other end of the isolating cover plate shifting piece is arranged on one side of the isolating interlocking cover plate 10 or connected with the isolating interlocking cover plate 10; the other end of the isolation cover plate connecting rod 16 is hinged to the isolation cover plate shifting piece 17 through a third hinge shaft 30, the other end of the isolation cover plate shifting piece 17 is arranged on one side of the isolation interlocking cover plate 10, and a first return spring 35 is connected to the isolation interlocking cover plate 10.
The isolation interlocking cover plate 10 is connected with the case 1 through a strip-shaped hole.
The isolation operation window 602 is a groove formed in one end edge of the interlocking pull plate 6 close to the isolation interlocking cover plate 10 on one side of the direction in which the interlocking pull plate 6 moves from the second position to the first position, and when the interlocking pull plate 6 is located at the second position and the isolation interlocking cover plate 10 is located at the third position, the isolation interlocking cover plate 10 is located in the isolation operation window 602.
As shown in fig. 1, the positions of the components in the operation modes of the circuit breaker mechanism closing, the disconnecting switch closing, and the grounding switch opening are shown, as shown in fig. 2, the isolating interlocking cover plate 10 moves to the leftmost position to block the isolating operation shaft 3 under the pulling force of the first return spring 35, and at this time, the grounding operation shaft 2 is blocked by the interlocking pull plate 6, so that the isolating operation shaft 3 and the grounding operation shaft 2 cannot be operated at this time.
The circuit breaker opening operation button 5 is pressed to enable the circuit breaker driving spindle to rotate to an opening position, as shown in fig. 6, relative to a position of the circuit breaker in closing, as shown in fig. 2, the spindle driving crank arm 15 rotates anticlockwise, the isolation cover plate connecting rod 16 enables the spindle driving crank arm to rotate anticlockwise around the third hinge shaft 30, the isolation interlocking cover plate 10 is driven to move to the rightmost position, at this time, as shown in fig. 7, the isolation operation shaft 3 is exposed, the isolation operation shaft 3 can be operated, when the isolation operation shaft 3 is not rotated to the opening position, as shown in fig. 4, the isolation closing locking piece 7 has a locking effect on a pulling plate interlocking pin 603 on the interlocking pulling plate 6, the interlocking pulling plate 6 cannot move downwards, and therefore the grounding operation shaft 2 cannot be exposed due to misoperation.
Rotating the isolation operation shaft 3 to a switching-off position, as shown in fig. 10, relative to the position of fig. 5 during isolation switching-on, rotating the isolation interlocking shift fork 11 clockwise, pushing the isolation interlocking piece 13 to rotate clockwise around the fourth hinge shaft 12, pushing the circuit breaker mechanism interlocking plate 14 to move right, blocking the circuit breaker switching-on operation button 23, and ensuring that the circuit breaker mechanism cannot be switched on when the isolation switch is switched off, as shown in fig. 9, releasing the locking effect of the isolation switching-on locking piece 7 on the pull plate interlocking pin 603 on the interlocking pull plate 6, moving the interlocking pull plate 6 downward, exposing the grounding operation shaft 2, blocking the isolation operation shaft 3, and at this moment, performing switching-on operation on the grounding operation shaft 2, after switching-on operation, the grounding switching-on locking piece 9 forming a locking effect on the pull plate interlocking pin 603 on the interlocking pull plate 6, and the interlocking pull plate 6 cannot move upward.
Therefore, the three-station vacuum circuit breaker is realized that the power-off operation is necessarily carried out according to the operation sequence of the circuit breaker mechanism opening-disconnecting switch opening-grounding switch closing, and the reverse operation is necessarily carried out according to the operation sequence of the grounding switch opening-disconnecting switch closing-circuit breaker mechanism closing, so that the problem of misoperation can be avoided.
The switch cabinet is arranged in a switch cabinet, and further comprises a cabinet door of the switch cabinet, wherein a door locking plate 20 is arranged on the cabinet door, and a locking groove 2001 is arranged on the door locking plate 20;
as shown in the figure, the ground closing locking member 9 includes a ground interlocking toggle piece 903 sleeved on the ground operating shaft 2, the ground interlocking toggle piece 903 is connected with the ground state indicating part 901 through a connecting pin 904, and the end of the connecting pin 904 protrudes from the surface of the ground interlocking toggle piece 903; a door lock bolt 21 is sleeved on the end part of the connecting pin 904, a through groove 101 is formed in the case 1, the door lock bolt 21 penetrates through the through groove 101, and the width of the door lock bolt 21 is smaller than that of the through groove 101;
as shown in fig. 13, when the grounding operation shaft 2 is in the opening position, one end of the door lock bolt 21 away from the connecting pin 904 is located in a seventh position where a lock slot 2001 of the cabinet door in the closed state can be extended to form a door locking function;
as shown in fig. 14, when the ground operating shaft 2 is in the closing position, the end of the door lock latch 21 away from the connecting pin 904 is located in the eighth position where the door locking piece 20 and the outer surface of the cabinet 1 or the inside of the through slot 101 release the door locking function.
The door lock bolt 21 is in clearance fit with the lock groove 2001, the door lock bolt 21 can rotate in a certain angle range relative to the chassis 1, and the door lock bolt 21 can rotate relative to the grounding interlocking shifting piece 903.
Ensure like this when earthing switch is the separating brake state, the cabinet door can't be opened, only when earthing switch changes the closing position, the cabinet door just can be opened, when guaranteeing like this that cabinet door is opened and is maintained, vacuum circuit breaker is ground connection, ensures safety.
As shown in fig. 15, a cabinet door interlocking pin 22 is disposed in the chassis 1, and the cabinet door interlocking pin 22 is limited in the chassis 1 and can slide along the axial direction of the chassis 1;
the operating panel 4 is provided with a grounding operating sleeve 406, the end part of the grounding operating shaft 2 extends into the grounding operating sleeve 406, and when a grounding handle is inserted into the grounding operating sleeve 406 and is sleeved outside the grounding operating shaft 2, grounding switching-on/switching-off can be manually operated; the grounding operation sleeve 406 is provided with a first through hole 407, and the cabinet door interlocking pin 22 has a ninth position where the end portion thereof passes through the first through hole 407 and extends into the grounding operation sleeve 406 to form a locking action so that the grounding handle cannot be sleeved outside the grounding operation shaft 2 and a tenth position where the locking action is released so that the grounding handle can be sleeved outside the grounding operation shaft 2 on a path which slides along the axial direction of the cabinet door interlocking pin relative to the cabinet 1;
a transmission mechanism is arranged between the cabinet door and the cabinet door interlocking pin 22, as shown in fig. 16, when the cabinet door is in an open state, the cabinet door interlocking pin 22 is in a first position, as shown in fig. 17, when the cabinet door is in a closed state, the cabinet door interlocking pin 22 is in a second position. After ensuring that the cabinet door is opened like this, earthing switch is unable to be operated, prevents that someone from operating earthing switch by other people when overhauing in the cubical switchboard, ensures safety.
The transmission mechanism between the cabinet door and the cabinet door interlocking pin 22 is an interlocking hinge 31, a supporting part 32 is arranged on the cabinet 1, and the supporting part 32 is connected with the interlocking hinge 31 through a sixth hinge shaft 33; one end of the interlocking hinge 31 is provided with a strip-shaped hole, the cabinet door interlocking pin 22 is provided with a hinged shaft, and the hinged shaft 1101 on the cabinet door interlocking pin 22 penetrates through the strip-shaped hole; the other end of the interlocking hinge 31 is arranged outside the case 1;
when the cabinet door is in a closed state from an open state, the door lock plate 20 pushes the interlocking hinge 31 to rotate the interlocking hinge 31 relative to the sixth hinge shaft 33, and the interlocking hinge 31 drives the cabinet door interlocking pin 22 to move so that the cabinet door interlocking pin 22 moves from the first position to the second position;
the interlocking hinge 31 or the cabinet door interlocking pin 22 is provided with a third elastic resetting piece 34, and when the cabinet door is in an opening state from a closing state, the third elastic resetting piece 34 pushes the cabinet door interlocking pin 22 to move from the second position to the first position. Simple structure is more reliable stable, the installation of being convenient for. Pushing the interlocking hinges 31 is the door locking piece 20.
As shown in fig. 11, the method further includes:
the grounding positioning plate 25 is sleeved on the grounding operation shaft 2, is in linkage fit with the grounding operation shaft 2, and is provided with a grounding separating brake positioning groove 2501 and an isolation separating brake positioning cam 2502;
the isolation positioning disc 26 is sleeved on the isolation operation shaft 3, is in linkage fit with the isolation operation shaft 3, and is provided with an isolation separating brake positioning groove 2601 and a grounding separating brake positioning cam 2602;
an interlock bracket 27 having one end hinged to the cabinet 1 by a fifth hinge shaft 28 and the other end connected to an interlock block 29,
the interlocking block 29 is positioned between the grounding positioning plate 25 and the isolating positioning plate 26;
as shown in fig. 12 (a), when the grounding operating shaft 2 is in the grounding closing position and the isolating operating shaft 3 is in the isolating opening position, the isolating opening positioning cam 2502 on the grounding positioning plate 25 cooperates with the interlocking block 29 to be positioned in the isolating opening positioning slot 2601 to lock the isolating positioning plate 26;
as shown in fig. 12 (b), when the isolation operation shaft 3 is in the isolation closing position and the grounding operation shaft 2 is in the grounding opening position, the grounding opening positioning cam 2602 on the isolation positioning plate 26 cooperates with the interlocking block 29 to be positioned in the grounding opening positioning slot 2501 to lock the grounding positioning plate 25.
The interlocking between the isolation operation shaft 3 and the grounding operation shaft 2 is realized by arranging a grounding positioning disc in linkage fit with the grounding operation shaft, an isolation positioning disc in linkage fit with the isolation operation shaft, and an interlocking support and an interlocking block which are arranged between the grounding positioning disc and the isolation positioning disc.
The interlocking block 29 is a cylinder; the interlocking bracket 27 is hinged to the interlocking block 29 by a seventh hinge shaft 36, and the seventh hinge shaft 36 is concentrically arranged with the interlocking block 29. The interlocking blocks 29 are circumferentially rotatable relative to the hinge post 10 such that when the spacer locator disc 26 is rotated counterclockwise after the spacer locator disc 26 is rotated clockwise to the open position in fig. 2 (a), the spacer locator disc 26 engages the rolling cylindrical interlocking blocks 29 with little resistance; when the isolating positioning plate 26 is rotated counterclockwise after the isolating positioning plate 26 in fig. 2 (b) is rotated clockwise to the opening position, the isolating positioning plate 26 is engaged with the rolling cylindrical interlocking block 29 with a small resistance.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (8)
1. A three-station vacuum circuit breaker comprises a case (1), a grounding operation shaft (2), an isolation operation shaft (3), an operation panel (4), a circuit breaker driving main shaft (8), a circuit breaker closing operation button (23) and a circuit breaker opening operation button (24), wherein the case (1) is fixedly connected with the operation panel (4), a grounding operation hole (401) and an isolation operation hole (402) are formed in the operation panel (4), a handle can be connected to the grounding operation shaft (2) through the grounding operation hole (401) to perform manual operation on the grounding operation shaft, the isolation operation shaft (3) can be manually operated through the isolation operation hole (402), and the circuit breaker driving main shaft (8) can be rotated to a switching-on position or a switching-off position by pressing the circuit breaker closing operation button (23) or the circuit breaker opening operation button (24); the method is characterized in that:
an interlocking pull plate (6) is connected to the outer surface of the operation panel (4), and a grounding operation window (601) and an isolating operation window (602) are arranged on the interlocking pull plate (6);
the interlocking pull plate (6) can slide relative to the operation panel (4), and is provided with a first position on a sliding path, wherein a grounding operation window (601) faces the grounding operation hole (401) to enable the grounding operation hole (401) to be exposed and operable, and an isolating operation window (602) is staggered with the isolating operation hole (402) to enable the isolating operation hole (402) to be shielded and inoperable, and a second position, wherein the isolating operation window (602) faces the isolating operation hole (402) to enable the isolating operation hole (402) to be exposed and operable, and the grounding operation window (601) is staggered with the grounding operation hole (401) to enable the grounding operation hole (401) to be shielded and inoperable;
a grounding closing locking piece (9) is connected to the grounding operation shaft (2) in a circumferential linkage manner, an isolating closing locking piece (7) is connected to the isolating operation shaft (3) in a circumferential linkage manner, a pulling plate interlocking pin (603) is fixedly arranged on the interlocking pulling plate (6), and an opening (405) for the pulling plate interlocking pin (603) to pass through is formed in the operation panel (4);
when the interlocking pulling plate (6) is located at the first position and the grounding operation shaft (2) is located at the grounding switching-on position, the grounding switching-on locking piece (9) is located on a path of the pulling plate interlocking pin (603) moving from the first position to the second position to form a locking effect on the interlocking pulling plate (6) so that the interlocking pulling plate (6) cannot move to the second position;
when the interlocking pulling plate (6) is located at the second position and the isolation operation shaft (3) is located at the isolation switching-on position, the isolation switching-on locking piece (7) is located on a path of the pulling plate interlocking pin (603) moving from the second position to the first position to form a locking effect on the interlocking pulling plate (6) so that the interlocking pulling plate (6) cannot move to the first position;
the isolation interlocking device is characterized in that an isolation interlocking cover plate (10) is connected to the case (1), the isolation interlocking cover plate (10) can slide relative to the case (1), and a third position which blocks the isolation operation hole (402) to enable the isolation operation shaft (3) not to be operated and a fourth position which is away from the front area of the isolation operation hole (402) to enable the isolation operation shaft (3) to be exposed for operation are arranged on a sliding path; a transmission assembly is arranged between the isolation interlocking cover plate (10) and the breaker driving main shaft (8), and when the breaker driving main shaft (8) is in at least part of paths of rotary driving opening and closing, the isolation interlocking cover plate (10) is enabled to slide to a third position and/or a fourth position through the transmission assembly; when the breaker driving main shaft (8) is in a switching-on position, the isolation interlocking cover plate (10) is located at a third position; when the breaker driving main shaft (8) is in a brake separating position, the isolation interlocking cover plate (10) is located at a fourth position;
the isolation operation shaft (3) is connected with an isolation interlocking shift fork (11) in a linkage manner, the case (1) is connected with an isolation interlocking plate (13) in a hinged manner through a fourth hinge shaft (12), the case (1) is connected with a circuit breaker mechanism interlocking plate (14), one end of the circuit breaker mechanism interlocking plate (14) is provided with a baffle plate part (1401) and the other end of the circuit breaker mechanism interlocking plate is provided with a first pushing part (1402), two ends of the isolation interlocking plate (13) are respectively matched with the first pushing part (1402) and the isolation interlocking shift fork (11), the circuit breaker mechanism interlocking plate (14) can slide along a straight line relative to the case (1), when the isolation operation shaft (3) is in a brake separating position, the circuit breaker mechanism interlocking plate (14) is located in a fifth position where the baffle plate part (1401) blocks a circuit breaker brake closing operation button (23), and when the isolation operation shaft (3) is in a brake closing position, the circuit breaker mechanism interlocking plate (14) is positioned at a sixth position where the baffle part (1401) is separated from the front of the circuit breaker closing operation button (23) to enable the circuit breaker closing operation button (23) to be exposed and pressed.
2. The three-position vacuum circuit breaker according to claim 1, characterized in that: the operating panel (4) is provided with a grounding state indicating window (403) and an isolation state indicating window (404), the grounding closing locking piece (9) comprises a grounding state indicating part (901), the isolation closing locking piece (7) comprises an isolation state indicating part (701), the grounding state indicating part (901) displays and indicates a grounding opening state or a grounding closing state in the grounding state indicating window (403), and the isolation state indicating part (701) displays and indicates an isolation opening state or an isolation closing state in the isolation state indicating window (404);
the interlocking pulling plate (6) is provided with a grounding state indicating strip-shaped hole and an isolating state indicating strip-shaped hole corresponding to the grounding state indicating window (403) and the isolating state indicating window (404), and the grounding state indicating window (403) and the isolating state indicating window (404) are both in a visual state through the grounding state indicating strip-shaped hole and the isolating state indicating strip-shaped hole on a path from a first position to a second position.
3. The three-position vacuum circuit breaker according to claim 2, characterized in that: the pull plate interlocking pin (603) is located between the grounding state indication strip-shaped hole and the isolation state indication strip-shaped hole, the grounding state indication part (901) corresponding to the grounding switch-on part protrudes away from the outer edge of the grounding operation shaft (2) to form a grounding switch-on locking part, and when the interlocking pull plate (6) is located at the first position and the grounding operation shaft (2) is located at the grounding switch-on position, the grounding switch-on locking part is located on one side of the direction in which the pull plate interlocking pin (603) moves to the second position;
the part, corresponding to the isolation switch-on, of the isolation state indicating part (701) is far away from the outer edge of the isolation operation shaft (3) to form an isolation switch-on locking part in a protruding mode, and when the interlocking pulling plate (6) is located at the second position and the isolation operation shaft (3) is located at the isolation switch-on position, the isolation switch-on locking part is located on one side of the direction in which the pulling plate interlocking pin (603) moves towards the first position.
4. The three-position vacuum circuit breaker according to claim 1, characterized in that: the transmission assembly comprises a main shaft driving crank arm (15), an isolation cover plate connecting rod (16) and an isolation cover plate shifting sheet (17); one end of the main shaft driving crank arm (15) is fixed on the circuit breaker driving main shaft (8) and is in linkage fit with the circuit breaker driving main shaft (8), and the other end of the main shaft driving crank arm is hinged with one end of the isolating cover plate connecting rod (16) through a first hinge shaft (18); one end of the isolating cover plate shifting piece (17) is hinged with the case (1) through a second hinge shaft (19), and the other end of the isolating cover plate shifting piece is arranged on one side of the isolating interlocking cover plate (10) or is connected with the isolating interlocking cover plate (10); the other end of the isolation cover plate connecting rod (16) is hinged to the isolation cover plate shifting piece (17) through a third hinge shaft (30), the other end of the isolation cover plate shifting piece (17) is arranged on one side of the isolation interlocking cover plate (10), and a first reset spring (35) is connected to the isolation interlocking cover plate (10).
5. The three-position vacuum circuit breaker according to claim 1, characterized in that: the isolation operation window (602) is a groove arranged at one end edge of the interlocking pull plate (6) close to the isolation interlocking cover plate (10) from the second position to the first position, and when the interlocking pull plate (6) is located at the second position and the isolation interlocking cover plate (10) is located at the third position, the isolation interlocking cover plate (10) is located in the isolation operation window (602).
6. The three-position vacuum circuit breaker according to claim 1, characterized in that: the door lock further comprises a cabinet door, wherein a door locking plate (20) is arranged on the cabinet door, and a locking groove (2001) is formed in the door locking plate (20);
the grounding switch-on locking piece (9) comprises a grounding interlocking shifting piece (903) sleeved on the grounding operation shaft (2), the grounding interlocking shifting piece (903) is connected with the grounding state indicating part (901) through a connecting pin (904), and the end part of the connecting pin (904) protrudes out of the surface of the grounding interlocking shifting piece (903); a door lock bolt (21) is sleeved on the end part of the connecting pin (904), a through groove (101) is formed in the case (1), the door lock bolt (21) penetrates through the through groove (101), and the width of the door lock bolt (21) is smaller than that of the through groove (101);
when the grounding operation shaft (2) is in the opening position, one end of the door lock bolt (21) far away from the connecting pin (904) is located at a seventh position where a lock groove (2001) on the cabinet door in a door closing state can extend into the seventh position for locking the door;
when the grounding operation shaft (2) is in a switch-on position, one end of the door lock bolt (21) far away from the connecting pin (904) is located at an eighth position where the door locking effect is released between the door locking piece (20) and the outer surface of the case (1) or in the through groove (101).
7. Three-position vacuum interrupter according to claim 1 or 6, characterized in that: a cabinet door interlocking pin (22) is arranged in the case (1), and the cabinet door interlocking pin (22) is limited in the case (1) and can slide along the axial direction of the case (1);
the operating panel (4) is provided with a grounding operating sleeve (406), the end part of the grounding operating shaft (2) extends into the grounding operating sleeve (406), and when a grounding handle is inserted into the grounding operating sleeve (406) and sleeved outside the grounding operating shaft (2), the grounding switch-on/switch-off can be manually operated; a first through hole (407) is formed in the grounding operation sleeve (406), and a path along which the cabinet door interlocking pin (22) slides axially relative to the cabinet (1) is provided with a ninth position at which the end part of the cabinet door interlocking pin penetrates through the first through hole (407) and extends into the grounding operation sleeve (406) to form a locking action so that the grounding handle cannot be sleeved outside the grounding operation shaft (2) and a tenth position at which the locking action is released so that the grounding handle can be sleeved outside the grounding operation shaft (2);
a transmission mechanism is arranged between the cabinet door and the cabinet door interlocking pin (22), when the cabinet door is in an open state, the cabinet door interlocking pin (22) is in a first position, and when the cabinet door is in a closed state, the cabinet door interlocking pin (22) is in a second position.
8. The three-position vacuum circuit breaker according to claim 1, characterized in that: also includes:
the grounding positioning plate (25) is sleeved on the grounding operation shaft (2), is in linkage fit with the grounding operation shaft (2), and is provided with a grounding separating brake positioning groove (2501) and an isolation separating brake positioning cam (2502);
the isolation positioning disc (26) is sleeved on the isolation operation shaft (3), is in linkage fit with the isolation operation shaft (3), and is provided with an isolation opening positioning groove (2601) and a grounding opening positioning cam (2602);
an interlocking bracket (27) with one end hinged with the case (1) through a fifth hinge shaft (28) and the other end connected with an interlocking block (29),
the interlocking block (29) is positioned between the grounding positioning plate (25) and the isolating positioning plate (26);
when the grounding operation shaft (2) is in a grounding switch-on position and the isolating operation shaft (3) is in an isolating switch-off position, an isolating switch-off positioning cam (2502) on the grounding positioning plate (25) is matched with an interlocking block (29) to be positioned in an isolating switch-off positioning groove (2601) to lock an isolating positioning plate (26);
when the isolation operation shaft (3) is in an isolation switching-on position and the grounding operation shaft (2) is in a grounding switching-off position, a grounding switching-off positioning cam (2602) on the isolation positioning disc (26) is matched with an interlocking block (29) to be positioned in a grounding switching-off positioning groove (2501) to form a locking effect on a grounding positioning disc (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020947901.2U CN212113552U (en) | 2020-05-29 | 2020-05-29 | Three-station vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020947901.2U CN212113552U (en) | 2020-05-29 | 2020-05-29 | Three-station vacuum circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN212113552U true CN212113552U (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020947901.2U Expired - Fee Related CN212113552U (en) | 2020-05-29 | 2020-05-29 | Three-station vacuum circuit breaker |
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| CN (1) | CN212113552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725022A (en) * | 2020-05-29 | 2020-09-29 | 裕力电气有限公司 | Three-station vacuum circuit breaker |
-
2020
- 2020-05-29 CN CN202020947901.2U patent/CN212113552U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725022A (en) * | 2020-05-29 | 2020-09-29 | 裕力电气有限公司 | Three-station vacuum circuit breaker |
| CN111725022B (en) * | 2020-05-29 | 2024-08-27 | 裕力电气集团有限公司 | Three-station vacuum circuit breaker |
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Address after: No.221, Jingba Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Patentee after: Yuli Electric Group Co.,Ltd. Address before: No.221, Jingba Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Patentee before: YULI ELECTRICAL Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201208 |