CN111508788A - Split type interlocking mechanism of gas charging cabinet - Google Patents
Split type interlocking mechanism of gas charging cabinet Download PDFInfo
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- CN111508788A CN111508788A CN202010491103.8A CN202010491103A CN111508788A CN 111508788 A CN111508788 A CN 111508788A CN 202010491103 A CN202010491103 A CN 202010491103A CN 111508788 A CN111508788 A CN 111508788A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
Abstract
The invention discloses a split type interlocking mechanism of an inflatable cabinet, which mainly comprises a limiting shaft, a first interlocking crank arm, a closing brake component, a driving component, a transmission component and a reset component. Therefore, the invention realizes the mechanical interlocking function between the three-position isolation grounding switch and the circuit breaker of the gas-filled cabinet, and has the advantages of simple structure, active interlocking, safety and reliability.
Description
Technical Field
The invention relates to an interlocking mechanism, in particular to a split type interlocking mechanism of an inflatable cabinet.
Background
A cabinet type Gas Insulated metal enclosed Switchgear (C-GIS) is a primary distribution system device which takes a breaker as a main switch and is used for 10-35 kV or higher voltage level. The inflatable ring main unit uses a load switch as a main switch and is also provided with a scheme of a circuit breaker, and the inflatable ring main unit is used for a 10-35 kV secondary power distribution system. The inflatable cabinet is generally a general name of the C-GIS and the inflatable ring main unit.
The gas-filled cabinet utilizes the GIS insulation technology and the sealing technology to install high-voltage elements in a box-type sealed container, fills insulating gas slightly higher than atmospheric pressure, utilizes modern advanced processing technology to manufacture a set of serialized products, and has the functions of controlling, protecting, measuring, monitoring and communicating electric energy distribution under the normal and fault conditions of the system.
Currently, gas-filled cabinets typically include a three-position disconnecting grounding switch and a circuit breaker. According to different structures, the operating mechanisms of the three-station isolation grounding switch of the inflatable cabinet are divided into a knife-switch type three-station mechanism and a direct-acting type three-station mechanism, and for the inflatable cabinet with the knife-switch type three-station mechanism matched with a circuit breaker, the requirement that the three-station mechanism is not allowed to be manually operated when the circuit breaker is in a closing state and the three-station mechanism is allowed to be manually operated when the circuit breaker is in an opening state needs to be met; and the circuit breaker cannot be closed in the manual operation process of the three-station mechanism. Therefore, an interlock is usually arranged between the three-position mechanism of the gas-filled cabinet and the operating mechanism of the circuit breaker, but in the prior art, the interlock between some three-position mechanisms and the operating mechanism of the circuit breaker is a passive interlock in a mode of limiting the rotation of an output shaft of the three-position isolating grounding switch, and the reliability is poor. The interlocking between other three-station mechanisms and the operating mechanism of the circuit breaker has the problems of complex structure, complex installation, single interlocking mode and incapability of ensuring the in-place interlocking.
Disclosure of Invention
In order to overcome the defects, the invention provides the split type interlocking mechanism of the inflatable cabinet, which realizes the mechanical interlocking function between the three-station isolation grounding switch and the circuit breaker of the inflatable cabinet and has the advantages of simple structure, active interlocking, safety and reliability.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a split type interlocking mechanism of an inflatable cabinet is used for achieving interlocking between a disconnecting link type three-station mechanism of the inflatable cabinet and a breaker operating mechanism of the inflatable cabinet, and comprises a limiting shaft, a first interlocking connecting lever, a closing brake assembly, a driving piece, a transmission assembly and a reset assembly, wherein the limiting shaft is fixedly connected with a key shaft of the disconnecting link type three-station mechanism, the first interlocking connecting lever is fixedly connected with a main shaft of the breaker operating mechanism, the driving piece is installed on the limiting shaft, the transmission assembly is arranged between the first interlocking connecting lever and the driving piece, and the bottom end of the transmission assembly is vertically opposite to the first interlocking connecting lever; the closing brake assembly is arranged in the middle of the transmission assembly; when a breaker of the gas-filled cabinet is switched on, a first interlocking crank arm on the main shaft rotates to a position abutting against the bottom end of the transmission assembly, so that the top end of the transmission assembly abuts against the driving piece, the limiting shaft is braked, and a key cannot operate a key shaft to open a rotary valve of the knife-switch type three-station mechanism; when a key shaft is operated by a key to open a rotary valve of the knife-switch type three-station mechanism, a first interlocking crank arm on the main shaft rotates to a position separated from the bottom end of the transmission assembly, the key shaft rotates reversely or clockwise to drive the driving piece to rotate through the limiting shaft, one end of the driving piece downwards drives the transmission assembly and the closing brake assembly, the closing brake assembly brakes a closing driving assembly of the circuit breaker operating mechanism, and the reset assembly stores energy; when the rotary valve is closed by the rotary key, the energy stored in the reset assembly is released, and the closing brake assembly, the transmission assembly and the driving piece can be driven to reset.
As a further improvement of the invention, the transmission assembly comprises a transmission rod and an interlocking plate, the interlocking plate comprises a first vertical plate and a first horizontal plate formed on the top of the first vertical plate, the first horizontal plate is arranged below the driving part, a notch groove avoiding the limiting shaft is formed at the joint of the first vertical plate and the first horizontal plate, the top end of the transmission rod is fixedly connected with the first vertical plate, and the bottom end of the transmission rod is vertically opposite to the first interlocking crank arm.
As a further improvement of the present invention, the interlocking plate further includes a second horizontal plate and a second vertical plate, the second horizontal plate is connected between the first vertical plate and the second vertical plate, two first kidney-shaped holes are formed on the second vertical plate, and the second vertical plate is fixedly connected with the transmission rod through a fastener penetrating through the first kidney-shaped holes.
As a further improvement of the present invention, the reset assembly includes a fixed bent plate and a reset spring, the middle portion of the fixed bent plate is mounted on a side wall of a frame of the circuit breaker operating mechanism, the reset spring is disposed between two opposite support arms of the fixed bent plate, the middle portion of the transmission rod movably penetrates through the reset spring and through holes of the two support arms, and the transmission rod moves downward to compress the reset spring for energy storage.
As a further improvement of the invention, the structure that the transmission rod moves downwards to compress the return spring to store energy is as follows: the transmission rod is provided with a pressing pin and a pressing piece, the pressing pin and the pressing piece are arranged between the two support arms, the pressing pin is arranged in a pin hole in the transmission rod, the pressing piece is movably sleeved on the transmission rod, and the pressing piece is positioned between the top end of the reset spring and the pressing pin.
As a further improvement of the invention, the closing brake assembly comprises a closing limiting plate and a connecting rod, the middle part of the closing limiting plate is rotatably mounted on the frame of the circuit breaker operating mechanism through a pin shaft, one end of the connecting rod is fixedly connected with the transmission rod, and the other end of the connecting rod penetrates through a second kidney-shaped hole in the closing limiting plate; when the transmission rod drives the connecting rod to move downwards, the connecting rod drives the closing limiting plate to rotate, and the support leg of the closing limiting plate abuts against the closing driving assembly.
As a further improvement of the present invention, the closing driving assembly includes a closing coil, a closing first connecting lever, a closing link plate, a closing second connecting lever, a closing cam and a closing spring, the closing first connecting lever, the closing second connecting lever and the closing cam are respectively rotatably mounted on a frame of the circuit breaker operating mechanism, the closing second connecting lever has a connecting arm with an obtuse included angle and a closing energy storage holding pawl, and a closing roller is fixed on the closing cam; two ends of the closing connecting plate are respectively and rotatably connected to a connecting arm of the closing first connecting lever and the closing second connecting lever, the closing spring is elastically abutted against one side surface of the closing roller, and in a switching-off state, a closing energy storage retaining pawl of the closing second connecting lever is abutted against the other side surface opposite to the closing roller; a closing coil push rod is arranged on the closing coil, when closing is performed, a support leg of the closing limiting plate is separated from a brake point of the closing first connecting lever, the closing coil drives the closing coil push rod to push the closing first connecting lever to rotate after receiving a closing signal, the closing second connecting lever is driven to rotate through the closing connecting plate, the closing energy storage holding pawl is separated from the closing roller, and meanwhile, the closing spring pushes the closing cam to rotate and impacts a main roller on the main shaft, so that closing is completed; in the brake-off state, after the rotary valve is opened by operating the key shaft through a key, the support leg of the closing limiting plate abuts against the braking point of the first closing crank arm, so that the closing coil push rod of the closing coil cannot push the first closing crank arm to rotate.
As a further improvement of the invention, the transmission rod is square, the first interlocking crank arm comprises a disc body and a square column, the disc body is fixedly sleeved on the main shaft, the square column is connected to the outer edge of the disc body, and the square column is opposite to the bottom end of the transmission rod up and down.
As a further improvement of the invention, the knife-switch type three-station mechanism comprises the key shaft and the rotary valve, and further comprises a frame, a position conversion plate and a drive plate, wherein the position conversion plate is installed on the front side of the frame, the central line position of the rotary valve close to the top is rotatably installed on the front side of the position conversion plate through a pin shaft, the limiting shaft is rotatably installed on the frame, the key shaft is fixedly connected to the front end of the limiting shaft, and the key shaft penetrates out of the front side of the position conversion plate and is located below the rotary valve; the position conversion board is provided with a position conversion board, a key shaft is arranged on the position conversion board, the position conversion board is arranged in the position conversion board, the drive board is arranged between the front side of the rotary valve and the front side of the position conversion board, the bottom end of the drive board is fixedly connected to the key shaft, a first sliding pin is formed at the position, close to the top end, of the front side of the drive board, a second sliding pin is formed at the position, close to the key shaft, of the rear side of the drive board, a sliding groove extending along the central line is formed at the position, close to the pin shaft, of the central line of the rotary valve, the first sliding pin is arranged in the sliding groove in a penetrating mode, a clearance groove is formed at.
As a further improvement of the invention, the knife-switch type three-position mechanism also comprises an operation panel, an isolation operation shaft and a grounding operation shaft, first bending plates are formed on the left side, the right side, the upper side and the lower side of the position conversion plate, the position conversion plate is arranged on the front side of the frame through the first bending plates, second bending plates are formed on the left side and the right side of the operation panel, the operation panel is arranged on the front side of the position conversion plate through the second bending plates, the rotary valve and the driving plate are arranged between the operating panel and the position conversion plate, the isolation operation shaft and the grounding operation shaft are rotatably arranged on the frame, and an isolation operation hole corresponding to the isolation operation shaft, a grounding operation hole corresponding to the grounding operation shaft and a key operation hole corresponding to the key shaft are formed on the operation panel.
The invention has the beneficial effects that: the invention provides a split type interlocking mechanism of an inflatable cabinet, which is characterized in that a first interlocking crank arm is arranged on a main shaft of a circuit breaker operating mechanism, a limiting shaft is connected on a key shaft of a disconnecting link type three-station mechanism, and a closing brake assembly, a driving piece, a transmission assembly and a reset assembly are arranged between the first interlocking crank arm and the limiting shaft, so that the function that a rotary valve of the three-station mechanism cannot be opened by rotating a key to perform manual operation when a circuit breaker of the inflatable cabinet is in a closing state is realized, and the function that the circuit breaker cannot be closed in the process of manually operating the three-station mechanism in a switching-off state is also realized. Therefore, the invention realizes the mechanical interlocking function between the three-position isolation grounding switch and the circuit breaker of the gas-filled cabinet, and has the advantages of simple structure, active interlocking, safety and reliability.
Drawings
FIG. 1 is a front view of the split interlock mechanism of the inflatable cabinet of the present invention;
FIG. 2 is a perspective view of the front view of the split type interlocking mechanism of the inflatable cabinet of the present invention;
FIG. 3 is a perspective view of the back view of the split interlock mechanism of the inflatable cabinet of the present invention;
FIG. 4 is a schematic structural diagram of a knife-switch type three-position mechanism of the present invention;
fig. 5 is a schematic structural view of the circuit breaker operating mechanism of the present invention;
the following description is made with reference to the accompanying drawings:
1-a limiting shaft, 2-a first interlocking crank arm, 21-a disc body, 22-a square column, 3-a closing brake component, 31-a closing limiting plate, 311-a second kidney-shaped hole, 312-a support leg, 32-a connecting rod, 4-a driving component, 5-a driving component, 51-a driving rod, 511-a pin hole, 52-an interlocking plate, 521-a first vertical plate, 522-a first horizontal plate, 523-a notch groove, 524-a second horizontal plate, 525-a second vertical plate, 5251-a first kidney-shaped hole, 6-a reset component, 61-a fixed bent plate, 611-a support arm, 62-a reset spring, 7-a pressing plate, 110-a key shaft, 120-a rotary valve, 121-a sliding groove, 130-a frame and 140-a position conversion plate, 141-clearance groove, 142-first bending plate, 150-driving plate, 151-first sliding pin, 152-second sliding pin, 160-pin shaft, 170-operation panel, 171-second bending plate, 172-isolation operation hole, 173-grounding operation hole, 174-key operation hole, 180-isolation operation shaft, 190-grounding operation shaft, 210-main shaft, 220-closing driving component, 221-closing coil, 2211-closing coil push rod, 222-closing first crank arm, 223-closing connecting plate, 224-closing second crank arm, 2241-connecting arm, 2242-closing energy storage holding pawl, 225-closing cam, 2251-closing roller and 226-closing spring.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the split type interlocking mechanism of the inflatable cabinet is used for realizing mechanical interlocking between a disconnecting link type three-station mechanism of the inflatable cabinet and a circuit breaker operating mechanism of the inflatable cabinet, and the split type interlocking mechanism of the inflatable cabinet comprises a limiting shaft 1, a first interlocking connecting lever 2, a closing brake assembly 3, a driving member 4, a transmission assembly 5 and a reset assembly 6, wherein the limiting shaft is fixedly connected with a key shaft 110 of the disconnecting link type three-station mechanism, the first interlocking connecting lever is fixedly connected with a main shaft 210 of the circuit breaker operating mechanism, the driving member is mounted on the limiting shaft, the transmission assembly is arranged between the first interlocking connecting lever and the driving member, and the bottom end of the transmission assembly is vertically opposite to the first interlocking connecting lever; the closing brake assembly is arranged in the middle of the transmission assembly; when a breaker of the gas-filled cabinet is switched on, the first interlocking crank arm on the main shaft rotates to a position abutting against the bottom end of the transmission assembly, so that the top end of the transmission assembly abuts against the driving piece, the limiting shaft is braked, and a key cannot operate a key shaft to open the rotary valve 120 of the knife-switch type three-station mechanism; when a breaker of the gas-filled cabinet is opened and a key shaft is required to be operated by a key to open a rotary valve of the knife-switch type three-station mechanism, a first interlocking crank arm on the main shaft rotates to a position separated from the bottom end of the transmission assembly, the key shaft rotates reversely or clockwise to drive the driving piece to rotate through the limiting shaft, one end of the driving piece downwards drives the transmission assembly and the closing brake assembly, the closing brake assembly brakes a closing driving assembly 220 of the breaker operating mechanism, and the reset assembly stores energy; when the rotary valve is closed by the rotary key, the energy stored in the reset assembly is released, and the closing brake assembly, the transmission assembly and the driving piece can be driven to reset.
In the structure, the first interlocking crank arm is arranged on the main shaft of the circuit breaker operating mechanism, the limiting shaft is connected to the key shaft of the disconnecting link type three-station mechanism, and the switching-on braking assembly, the driving piece, the transmission assembly and the reset assembly are arranged between the first interlocking crank arm and the limiting shaft, so that when the circuit breaker of the gas charging cabinet is in a switching-on state, the function of manual operation cannot be performed by opening the rotary valve of the three-station mechanism through a rotary key, and meanwhile, the function of the circuit breaker cannot be switched on in the process of manually operating the three-station mechanism in a switching-off state is also realized. Therefore, the invention realizes the mechanical interlocking function between the disconnecting link type three-position mechanism and the circuit breaker operating mechanism, and has the advantages of simple structure, active interlocking, safety and reliability.
The working principle of the split type interlocking mechanism of the inflatable cabinet is as follows:
the circuit breaker combined floodgate state, the first interlocking turning arm on circuit breaker operating device's the main shaft rotates to the position that the butt lived drive assembly's bottom just, for example first interlocking turning arm is upwards just, at this moment, drive assembly can't the downstream, make drive assembly's top butt live the driving piece of spacing epaxial installation just, make spacing axle and key shaft unable to rotate, produce the braking to spacing axle and key shaft promptly, thereby can't pass through key operation key shaft, the rotary valve of three-station mechanism has been pinned promptly, rotary valve can't be contrary or clockwise rotation, just also can't open, make rotary valve block three-station isolation earthing switch's isolation operation axle and ground connection operation axle, just also can't manual operation three-station mechanism.
Breaker separating brake state, the rotatory certain angle of the epaxial first interlocking turning arm of circuit breaker operating device's main shaft, the bottom of departing from drive assembly, for example an acute angle of internal rotation, at this moment, drive assembly can move down, the driving piece is not by the locking, spacing axle and key axle can rotate, just also can operate the key axle through the key, and then reverse or clockwise rotation through the rotatory valve of key axle drive, the rotatory valve of three-station mechanism has been unblock promptly, at this moment, can open rotatory valve, through three-station mechanism of operating handle manual operation. For example, when the isolating operation shaft of the three-station isolating grounding switch needs to be manually operated, the key shaft is operated by a key to drive the rotary valve to rotate anticlockwise, so that the driving piece (such as a pin rod) arranged on the limiting shaft moves downwards, and the driving component further moves downwards. In order to ensure that the circuit breaker cannot be switched on in the manual operation process of the three-station mechanism, the circuit breaker switching-on brake assembly is arranged, namely, when the transmission assembly is driven downwards, the switching-on brake assembly is driven to move downwards, and the switching-on brake assembly brakes the switching-on driving assembly of the circuit breaker operating mechanism, namely, when the three-station mechanism is operated manually, the switching-on function of the circuit breaker is locked, and the circuit breaker can be prevented from being switched on due to the fact that a switching-on coil is touched by misoperation or background personnel perform misoperation.
In the structure, the reset assembly is used for resetting the transmission assembly, the closing brake assembly and the driving piece so as to ensure that the closing brake assembly can unlock the closing driving assembly after the three-station mechanism is operated. And the driving piece can reset to the initial position, even if the rotary valve is located at the middle position, at the moment, the rotary valve can block the isolation operation shaft and the grounding operation shaft of the three-station isolation grounding switch.
In the structure, the driving piece is used for driving the transmission assembly when the limiting shaft rotates reversely or clockwise, therefore, the driving piece can adopt a pin rod form, and the pin rod transversely penetrates through a pin hole in the limiting shaft, namely, the limiting shaft rotates anticlockwise or clockwise and can move downwards through the pin rod driving transmission assembly. But not limited thereto, the driving member may also be of another form, such as a bent plate with two arms.
Preferably, the transmission assembly comprises a transmission rod 51 and an interlocking plate 52, the interlocking plate comprises a first vertical plate 521 and a first horizontal plate 522 formed at the top of the first vertical plate, the first horizontal plate is arranged below the driving part, a notch 523 avoiding the limiting shaft is formed at the joint of the first vertical plate and the first horizontal plate, the top end of the transmission rod is fixedly connected with the first vertical plate, and the bottom end of the transmission rod is vertically opposite to the first interlocking crank arm. Like this, can realize the function at both ends about the butt driving piece simultaneously through the interlocking board, can realize through the transfer line with first interlocking turning arm complex function, and the transfer line does not occupy more space and be convenient for install reset assembly.
Preferably, the interlocking plate further comprises a second horizontal plate 524 and a second vertical plate 525, the second horizontal plate is connected between the first vertical plate and the second vertical plate, two first kidney-shaped holes 5251 are formed on the second vertical plate, and the second vertical plate is fixedly connected with the transmission rod through a fastener penetrating through the first kidney-shaped holes. Thus, the height of the transmission rod can be adjusted up and down according to the distance between the main shaft and the driving piece. The second horizontal plate is connected between the first vertical plate and the second vertical plate, so that the condition that the driving piece and the first interlocking crank arm on the main shaft are not opposite up and down is met. If the driver is directly above the first interlocking crank arm, the second horizontal plate can be omitted and the first and second vertical plates can be merged together. Preferably, the first horizontal plate, the first vertical plate, the second horizontal plate and the second vertical plate are integrally formed.
Preferably, the reset assembly comprises a fixed bent plate 61 and a reset spring 62, the middle part of the fixed bent plate is mounted on the side wall of the frame of the circuit breaker operating mechanism, the reset spring is arranged between two opposite support arms 611 of the fixed bent plate, the middle part of the transmission rod is movably arranged in the through hole of the support arm in a penetrating manner, the transmission rod moves downwards and can be compressed to store energy by the reset spring. Therefore, the function that the reset transmission assembly drives the closing brake assembly to reset is realized through the matching of the transmission rod, the fixed bent plate and the reset spring. The fixed bent plate is provided with two opposite support arms, and the reset spring is arranged between the two support arms, so that the effect of limiting and guiding the transmission rod can be achieved. As a preferred embodiment, the reset assembly is composed of a fixed bent plate 611 and a reset spring 62, which realizes the function of the reset assembly, but is not limited thereto, in other structures, the reset assembly may also be composed of a fixed plate, a guide pillar and a reset spring, at this time, a connecting member may be added on the transmission rod, the fixed plate is installed on the frame of the circuit breaker operating mechanism, the guide pillar is installed between the connecting member and the fixed plate, and the reset spring is sleeved on the guide pillar and located between the connecting member and the fixed plate.
Preferably, the structure that the transmission rod moves downwards to compress the return spring to store energy is as follows: the transmission rod is provided with a pressing pin and a pressing sheet 7, the pressing pin and the pressing sheet are arranged between the two support arms, the pressing pin is arranged in a pin hole 511 on the transmission rod, the pressing sheet is movably sleeved on the transmission rod, and the pressing sheet is positioned between the top end of the reset spring and the pressing pin. Therefore, the pin hole is formed in the transmission rod, the pressing pin is installed in the pin hole, and when the pressing pin moves downwards along with the transmission rod, the pressing piece can be driven to compress the return spring to store energy.
Preferably, the closing brake assembly comprises a closing limiting plate 31 and a connecting rod 32, the middle part of the closing limiting plate is rotatably mounted on the frame of the circuit breaker operating mechanism through a pin shaft, one end of the connecting rod is fixedly connected with the transmission rod, and the other end of the connecting rod penetrates through a second kidney-shaped hole 311 in the closing limiting plate; when the transmission rod drives the connecting rod to move downwards, the connecting rod drives the closing limiting plate to rotate, so that the support leg 312 of the closing limiting plate abuts against the closing driving assembly.
Preferably, the closing driving assembly includes a closing coil 221, a closing first connecting lever 222, a closing connecting plate 223, a closing second connecting lever 224, a closing cam 225 and a closing spring 226, the closing first connecting lever, the closing second connecting lever and the closing cam are respectively and rotatably mounted on the frame of the circuit breaker operating mechanism, the closing second connecting lever has a connecting arm 2241 and a closing energy storage holding latch 2242 which form an obtuse included angle, and a closing roller 2251 is fixed on the closing cam; two ends of the closing connecting plate are respectively and rotatably connected to a connecting arm of the closing first connecting lever and the closing second connecting lever, the closing spring is elastically abutted against one side surface of the closing roller, and in a switching-off state, a closing energy storage retaining pawl of the closing second connecting lever is abutted against the other side surface opposite to the closing roller; a closing coil push rod 2211 is arranged on the closing coil, when closing is performed, a support leg of the closing limiting plate is separated from a brake point of the closing first connecting lever, the closing coil drives the closing coil push rod to push the closing first connecting lever to rotate after receiving a closing signal, the closing connecting plate drives the closing second connecting lever to rotate, the closing energy storage holding pawl is separated from the closing roller, and meanwhile, the closing spring pushes the closing cam to rotate and impacts a main roller on the main shaft to complete closing; and in the switching-off state, after the rotary valve is opened, the support leg of the switching-on limiting plate is abutted to the braking point of the first switching-on connecting lever, so that the switching-on coil push rod of the switching-on coil cannot push the first switching-on connecting lever to rotate. Therefore, the locking and unlocking functions of the closing driving assembly are realized through the matching between the support leg of the closing limiting plate and the first closing connecting lever of the closing driving assembly, and the function that the circuit breaker cannot be closed in the process of manually operating the three-station mechanism in the opening state is realized. In this embodiment, the cooperation between the closing limiting plate and the first closing crank of the gate driving assembly is adopted, but not limited thereto, and in other embodiments, the cooperation between the closing limiting plate and the second closing crank may also be adopted as required.
Preferably, the transmission rod is square, the first interlocking connecting lever comprises a disc body 21 and a square column 22, the disc body is fixedly sleeved on the main shaft, the square column is connected to the outer edge of the disc body, and the square column is opposite to the bottom end of the transmission rod up and down. In this way, the function of moving the locking transmission rod downwards can be realized through the matching of the square transmission rod and the square column of the first interlocking crank arm, but the locking transmission rod is not limited to the function, and the locking transmission rod can also be designed into other structures which are mutually matched to be abutted according to the requirement, and the transmission rod can also be in other shapes.
The split type interlocking mechanism of the inflatable cabinet is suitable for all knife switch type three-station mechanisms which are longitudinally arranged, preferably, the knife switch type three-station mechanism comprises a key shaft 110, a rotary valve 120, a frame 130, a position conversion plate 140 and a drive plate 150, wherein the position conversion plate is arranged on the front side of the frame, the position of the center line of the rotary valve, which is close to the top, is rotatably arranged on the front side of the position conversion plate through a pin shaft 160, a limiting shaft is rotatably arranged on the frame, the key shaft is fixedly connected to the front end of the limiting shaft, and the key shaft penetrates out of the front side of the position conversion plate and is positioned below the rotary valve; the driving plate is arranged between the rotary valve and the front side of the position conversion plate, the bottom end of the driving plate is fixedly connected to the key shaft, a first sliding pin 151 is formed at the position, close to the top end, of the front side of the driving plate, a second sliding pin 152 is formed at the position, close to the key shaft, of the rear side of the driving plate, a sliding groove 121 extending along the central line is formed at the position, close to the pin shaft, of the central line of the rotary valve, the first sliding pin penetrates through the sliding groove, a clearance groove 141 is formed at the position, close to the key shaft, of the position conversion plate, and the second sliding groove penetrates through the clearance groove. Thus, when the key shaft is operated by a key, the key shaft drives the drive plate to rotate, and the drive plate can further drive the rotary valve to reversely or clockwise rotate (anticlockwise or clockwise rotate), so that the rotary valve is positioned at three positions of only shielding the isolation operation shaft, only shielding the grounding operation shaft and simultaneously shielding the isolation operation shaft and the grounding operation shaft. The first sliding pin is matched with the sliding groove and used for applying driving force to the rotary valve, and the second sliding pin is matched with the clearance groove and plays a role in guiding and limiting the driving plate.
Preferably, the knife-type three-position mechanism further comprises an operation panel 170, an isolation operation shaft 180 and a grounding operation shaft 190, first bending plates 142 are formed at left and right sides and upper and lower sides of the position conversion plate, the position conversion plate is installed at the front side of the frame through the first bending plates, second bending plates 171 are formed at both left and right sides of the operation panel, the operation panel is mounted on the front side of the position conversion plate via the second bending plates, the rotary valve and the driving plate are arranged between the operating panel and the position conversion plate, the isolation operation shaft and the ground operation shaft are rotatably mounted on the frame, and the operation panel is formed with an isolation operation hole 172 corresponding to the isolation operation shaft, a ground operation hole 173 corresponding to the ground operation shaft, and a key operation hole 174 corresponding to the key shaft. The operation panel is used for enclosing components such as the rotary valve, the driving plate and the like, plays a role of protection, is attractive in appearance, and can realize the operation of the isolation operation shaft, the grounding operation shaft and the key shaft by forming the isolation operation hole, the grounding operation hole and the key operation hole on the operation panel. An operation mark can be arranged on the operation panel according to the requirement.
In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a aerify split type interlocking device of cabinet for realize aerifing the interlock between the breaker operating device of switch formula three-station mechanism and the gas charging cabinet of cabinet, its characterized in that: the split type interlocking mechanism of the inflatable cabinet comprises a limiting shaft (1), a first interlocking crank arm (2), a closing brake assembly (3), a driving piece (4), a transmission assembly (5) and a reset assembly (6), wherein the limiting shaft is fixedly connected with a key shaft (110) of the knife switch type three-station mechanism, the first interlocking crank arm is fixedly connected with a main shaft (210) of the circuit breaker operating mechanism, the driving piece is installed on the limiting shaft, the transmission assembly is arranged between the first interlocking crank arm and the driving piece, and the bottom end of the transmission assembly is vertically opposite to the first interlocking crank arm; the closing brake assembly is arranged in the middle of the transmission assembly; when a breaker of the gas-filled cabinet is switched on, a first interlocking crank arm on the main shaft rotates to a position abutting against the bottom end of the transmission assembly, so that the top end of the transmission assembly abuts against the driving piece, the limiting shaft is braked, and a key cannot operate a key shaft to open a rotary valve (120) of the knife-switch type three-station mechanism; when a key shaft is operated by a key to open a rotary valve of the knife-switch type three-station mechanism, a first interlocking crank arm on the main shaft rotates to a position separated from the bottom end of the transmission assembly, the key shaft rotates reversely or clockwise, and the driving piece can be driven to rotate by the limiting shaft, so that one end of the driving piece downwards drives the transmission assembly and the closing brake assembly, the closing brake assembly brakes a closing driving assembly (220) of the circuit breaker operating mechanism, and the reset assembly stores energy; when the rotary valve is closed by the rotary key, the energy stored in the reset assembly is released, and the closing brake assembly, the transmission assembly and the driving piece can be driven to reset.
2. The split type interlocking mechanism of the inflatable cabinet as claimed in claim 1, wherein: the transmission assembly comprises a transmission rod (51) and an interlocking plate (52), the interlocking plate comprises a first vertical plate (521) and a first horizontal plate (522) formed at the top of the first vertical plate, the first horizontal plate is arranged below the driving piece, a notch groove (523) avoiding the limiting shaft is formed at the joint of the first vertical plate and the first horizontal plate, the top end of the transmission rod is fixedly connected with the first vertical plate, and the bottom end of the transmission rod is opposite to the first interlocking crank arm up and down.
3. The split interlock mechanism of an inflatable cabinet as claimed in claim 2, wherein: interlocking plate still includes second horizontal plate (524) and second vertical board (525), the second horizontal plate connect in first vertical board with between the second vertical board, be formed with two first kidney shape holes (5251) on the second vertical board, the second vertical board is through wearing to locate fastener and transfer line fixed connection in the first kidney shape hole.
4. The split interlock mechanism of an inflatable cabinet as claimed in claim 2, wherein: reset assembly is including fixed bent plate (61) and reset spring (62), the mid-mounting of fixed bent plate in on the lateral wall of circuit breaker operating device's frame, reset spring locates between two relative support arms (611) of fixed bent plate, the middle part activity of transfer line is worn to locate reset spring and two in the through-hole of support arm, the transfer line removes down and can compress reset spring energy storage.
5. The split type interlocking mechanism of the inflatable cabinet as claimed in claim 4, wherein: the structure that the transmission rod moves downwards to compress the return spring for storing energy is as follows: the transmission rod is provided with a pressing pin and a pressing sheet (7), the pressing pin and the pressing sheet are arranged between the two support arms, the pressing pin is arranged in a pin hole (511) in the transmission rod, the pressing sheet is movably sleeved on the transmission rod, and the pressing sheet is positioned between the top end of the reset spring and the pressing pin.
6. The split interlock mechanism of an inflatable cabinet as claimed in claim 2, wherein: the closing brake assembly comprises a closing limiting plate (31) and a connecting rod (32), the middle part of the closing limiting plate is rotatably installed on a frame of the circuit breaker operating mechanism through a pin shaft, one end of the connecting rod is fixedly connected with the transmission rod, and the other end of the connecting rod penetrates through a second kidney-shaped hole (311) in the closing limiting plate; when the transmission rod drives the connecting rod to move downwards, the connecting rod drives the closing limiting plate to rotate, so that the support leg (312) of the closing limiting plate is abutted to the closing driving assembly.
7. The split interlock mechanism of an inflatable cabinet as claimed in claim 6, wherein: the switching-on driving assembly comprises a switching-on coil (221), a switching-on first connecting lever (222), a switching-on connecting plate (223), a switching-on second connecting lever (224), a switching-on cam (225) and a switching-on spring (226), wherein the switching-on first connecting lever, the switching-on second connecting lever and the switching-on cam are respectively and rotatably installed on a frame of the circuit breaker operating mechanism, the switching-on second connecting lever is provided with a connecting arm (2241) and a switching-on energy storage holding pawl (2242) which form an obtuse included angle, and a switching-on roller (2251) is fixed on the switching-on cam; two ends of the closing connecting plate are respectively and rotatably connected to a connecting arm of the closing first connecting lever and the closing second connecting lever, the closing spring is elastically abutted against one side surface of the closing roller, and in a switching-off state, a closing energy storage retaining pawl of the closing second connecting lever is abutted against the other side surface opposite to the closing roller; a closing coil push rod (2211) is arranged on the closing coil, when closing is performed, a support leg of the closing limiting plate is separated from a brake point of the closing first connecting lever, the closing coil drives the closing coil push rod to push the closing first connecting lever to rotate after receiving a closing signal, the closing connecting plate drives the closing second connecting lever to rotate, the closing energy storage holding pawl is separated from the closing roller, and meanwhile, the closing spring pushes the closing cam to rotate and impacts a main roller on the main shaft, so that closing is completed; in the brake-off state, after the rotary valve is opened by operating the key shaft through a key, the support leg of the closing limiting plate abuts against the braking point of the first closing crank arm, so that the closing coil push rod of the closing coil cannot push the first closing crank arm to rotate.
8. The split interlock mechanism of an inflatable cabinet as claimed in claim 2, wherein: the transmission rod is square, the first interlocking connecting lever comprises a disc body (21) and a square column (22), the disc body is fixedly sleeved on the main shaft, the square column is connected to the outer edge of the disc body, and the square column is opposite to the bottom end of the transmission rod up and down.
9. The split type interlocking mechanism of the inflatable cabinet as claimed in claim 1, wherein: the knife-switch type three-station mechanism comprises a key shaft (110), a rotary valve (120), a frame (130), a position conversion plate (140) and a driving plate (150), wherein the position conversion plate is arranged on the front side of the frame, the central line of the rotary valve close to the top is rotatably arranged on the front side of the position conversion plate through a pin shaft (160), the limiting shaft is rotatably arranged on the frame, the key shaft is fixedly connected to the front end of the limiting shaft, and the key shaft penetrates out of the front side of the position conversion plate and is positioned below the rotary valve; the drive plate is arranged between the front side of the rotary valve and the front side of the position conversion plate, the bottom end of the drive plate is fixedly connected to the key shaft, a first sliding pin (151) is formed at the position, close to the top end, of the front side of the drive plate, a second sliding pin (152) is formed at the position, close to the key shaft, of the rear side of the drive plate, a sliding groove (121) extending along the central line is formed at the position, close to the pin shaft, of the central line of the rotary valve, the first sliding pin penetrates through the sliding groove, a clearance groove (141) is formed at the position, close to the key shaft, of the position conversion plate, and the second sliding groove penetrates through the clearance groove.
10. The split interlock mechanism of an inflatable cabinet as claimed in claim 9, wherein: the knife-switch type three-station mechanism also comprises an operation panel (170), an isolation operation shaft (180) and a grounding operation shaft (190), first bending plates (142) are formed on the left side, the right side, the upper side and the lower side of the position conversion plate, the position conversion plate is arranged at the front side of the frame through the first bending plate, second bending plates (171) are formed at the left side and the right side of the operation panel, the operating panel is arranged at the front side of the position conversion plate through the second bending plate, the rotary valve and the driving plate are arranged between the operating panel and the position conversion plate, the isolation operation shaft and the grounding operation shaft are rotatably mounted on the frame, and the operation panel is formed with an isolation operation hole (172) corresponding to the isolation operation shaft, a grounding operation hole (173) corresponding to the grounding operation shaft, and a key operation hole (174) corresponding to the key shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010491103.8A CN111508788A (en) | 2020-06-02 | 2020-06-02 | Split type interlocking mechanism of gas charging cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010491103.8A CN111508788A (en) | 2020-06-02 | 2020-06-02 | Split type interlocking mechanism of gas charging cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN111508788A true CN111508788A (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010491103.8A Pending CN111508788A (en) | 2020-06-02 | 2020-06-02 | Split type interlocking mechanism of gas charging cabinet |
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| CN (1) | CN111508788A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509836A (en) * | 2020-12-01 | 2021-03-16 | 上海平高天灵开关有限公司 | Linkage type interlocking structure for switch cabinet |
| CN112563066A (en) * | 2020-12-04 | 2021-03-26 | 武汉倍诺德开关有限公司 | Miniaturized multistation operating device |
| CN113140418A (en) * | 2021-03-22 | 2021-07-20 | 威胜电气有限公司 | Double-incoming-line spare power automatic switching mechanical interlocking device and ring main unit |
-
2020
- 2020-06-02 CN CN202010491103.8A patent/CN111508788A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509836A (en) * | 2020-12-01 | 2021-03-16 | 上海平高天灵开关有限公司 | Linkage type interlocking structure for switch cabinet |
| CN112563066A (en) * | 2020-12-04 | 2021-03-26 | 武汉倍诺德开关有限公司 | Miniaturized multistation operating device |
| CN112563066B (en) * | 2020-12-04 | 2023-12-29 | 武汉倍诺德开关有限公司 | Miniaturized multistation operating device |
| CN113140418A (en) * | 2021-03-22 | 2021-07-20 | 威胜电气有限公司 | Double-incoming-line spare power automatic switching mechanical interlocking device and ring main unit |
| CN113140418B (en) * | 2021-03-22 | 2022-05-20 | 威胜电气有限公司 | Double-incoming-line spare power automatic switching mechanical interlocking device and ring main unit |
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Effective date of registration: 20210702 Address after: 215300 room 2, 201 Shipai Dongyue Road, Baicheng Town, Kunshan City, Suzhou City, Jiangsu Province Applicant after: Suzhou lambda Electric Co.,Ltd. Address before: 215312 room 2, 201 Shipai Dongyue Road, Baicheng Town, Kunshan City, Suzhou City, Jiangsu Province Applicant before: LAMBDA ELECTRIC TECHNOLOGY (SUZHOU) Co.,Ltd. |
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