CN111508788B - Split interlocking mechanism of inflatable cabinet - Google Patents
Split interlocking mechanism of inflatable cabinet Download PDFInfo
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- CN111508788B CN111508788B CN202010491103.8A CN202010491103A CN111508788B CN 111508788 B CN111508788 B CN 111508788B CN 202010491103 A CN202010491103 A CN 202010491103A CN 111508788 B CN111508788 B CN 111508788B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 103
- 230000005540 biological transmission Effects 0.000 claims abstract description 93
- 238000002955 isolation Methods 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 238000003825 pressing Methods 0.000 claims description 28
- 238000004146 energy storage Methods 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 12
- 230000006872 improvement Effects 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000011949 advanced processing technology Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
本发明公开了一种充气柜分体式联锁机构，主要由限位轴、第一联锁拐臂、合闸制动组件、驱动件、传动组件和复位组件组成，通过在断路器操作机构的主轴上设置第一联锁拐臂，在刀闸式三工位机构的钥匙轴上连接限位轴，并在第一联锁拐臂与限位轴之间设置合闸制动组件、驱动件、传动组件和复位组件，实现了充气柜的断路器处于合闸状态时，无法通过旋转钥匙打开三工位机构的旋转活门进行手动操作的功能，同时也实现了分闸状态手动操作三工位机构的过程中，无法合闸断路器的功能。因此，本发明实现了充气柜的三工位隔离接地开关与断路器之间的机械联锁功能，且具有结构简单，主动联锁及安全可靠的优点。
The present invention discloses a split interlocking mechanism of an inflatable cabinet, which is mainly composed of a limit shaft, a first interlocking crank arm, a closing brake assembly, a driving member, a transmission assembly and a reset assembly. By arranging the first interlocking crank arm on the main shaft of the circuit breaker operating mechanism, connecting the limit shaft on the key shaft of the knife switch type three-position mechanism, and arranging the closing brake assembly, the driving member, the transmission assembly and the reset assembly between the first interlocking crank arm and the limit shaft, the function that the rotating valve of the three-position mechanism cannot be opened by rotating the key for manual operation when the circuit breaker of the inflatable cabinet is in the closed state is realized, and the function that the circuit breaker cannot be closed during the manual operation of the three-position mechanism in the open state is also realized. Therefore, the present invention realizes the mechanical interlocking function between the three-position isolation grounding switch of the inflatable cabinet and the circuit breaker, and has the advantages of simple structure, active interlocking and 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
The cabinet type gas-insulated metal-enclosed switchgear (Cubical Gas Insulated Switchgear), abbreviated as C-GIS, is primary power distribution system equipment which uses a circuit breaker as a main switch and is used for 10-35 kV or higher voltage levels. The inflatable ring main unit uses a load switch as a main switch, and also has a scheme of a breaker, and is used for a secondary power distribution system of 10-35 kV. The inflatable cabinet is commonly called a C-GIS and an inflatable ring main unit.
The inflatable cabinet utilizes the GIS insulation technology and sealing technology to install the high-voltage element in the box-type sealed container, and fills the insulating gas slightly higher than the atmospheric pressure, and the complete series products are manufactured by utilizing the modern advanced processing technology, and the inflatable cabinet has the functions of controlling, protecting, measuring, monitoring and communicating the electric energy distribution under the normal and fault conditions of the system.
Currently, inflatable cabinets typically include three-position isolation ground switches and circuit breakers. According to different structures, the operating mechanism of the three-station isolation grounding switch of the gas-filled cabinet is divided into a disconnecting link type three-station mechanism and a direct-acting three-station mechanism, the three-station mechanism is matched with the gas-filled cabinet of the breaker, the three-station mechanism is not allowed to be operated manually when the breaker is in a closing state, the three-station mechanism is allowed to be operated manually when the breaker is in a separating brake state, and the breaker cannot be closed in the manual operation process of the three-station mechanism. Therefore, an interlocking is usually arranged between the three-station mechanism of the gas-filled cabinet and the operating mechanism of the circuit breaker, but in the prior art, the interlocking between some three-station mechanisms and the operating mechanism of the circuit breaker is a passive interlocking by limiting the rotation of the output shaft of the three-station isolation grounding switch, so that 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, complicated installation, single interlocking mode and incapability of ensuring the interlocking in place.
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 problems is as follows:
the split type interlocking mechanism of the inflatable cabinet is used for realizing the 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 crank arm, a closing braking component, a driving piece, a transmission component and a reset component, wherein the limiting shaft is fixedly connected with a key shaft of the disconnecting link type three-station mechanism, the first interlocking crank arm is fixedly connected with a main shaft of the breaker operating mechanism, the driving piece is arranged on the limiting shaft, the transmission component is arranged between the first interlocking crank arm and the driving piece, the bottom end of the transmission component is opposite to the first interlocking crank arm up and down, the closing braking component is arranged in the middle of the transmission component, when a breaker of the inflatable cabinet is closed, the first interlocking crank arm on the main shaft rotates to a position of abutting against the bottom end of the transmission component, so that the top end of the transmission component abuts against the driving piece, the limiting shaft is braked, the key cannot operate the key shaft is fixedly connected with a main shaft of the breaker operating mechanism, when the disconnecting link type three-station mechanism is opened, the valve is opened by rotating the three-station mechanism, the valve is opened by rotating the transmission component, the first interlocking crank arm rotates to the three-station mechanism, the energy storage component is opened by rotating the corresponding to the opening mechanism, and the valve is opened by rotating the first interlocking crank arm, the rotation component is opened by rotating the rotation of the valve, and the first interlocking crank arm is opened to rotate to the bottom end, and the energy storage component is opened by rotating the valve, and the energy storage component is opened by rotating the opening mechanism, the 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 at the top of the first vertical plate, the first horizontal plate is arranged below the driving piece, a notch groove for 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.
As a further improvement of the invention, the interlocking plate further comprises a second horizontal plate and a second vertical plate, wherein the second horizontal plate is connected between the first vertical plate and the second vertical plate, two first waist-shaped holes are formed in the second vertical plate, and the second vertical plate is fixedly connected with the transmission rod through a fastener penetrating through the first waist-shaped holes.
As a further improvement of the invention, the reset assembly comprises a fixed bent plate and a reset spring, wherein the middle part of the fixed bent plate is arranged on the side wall of the frame of the breaker operating mechanism, the reset spring is arranged between two opposite support arms of the fixed bent plate, the middle part of the transmission rod is movably arranged in the reset spring and through holes of the two support arms in a penetrating way, and the transmission rod can compress the reset spring to store energy when moving downwards.
As a further improvement of the invention, the transmission rod moves downwards to compress the return spring to store energy has the structure that a pressing pin and a pressing sheet are arranged on the transmission rod, the pressing pin and the pressing sheet are arranged between the two support arms, the pressing pin is arranged in a pin hole 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 return spring and the pressing pin.
The invention further improves, the closing brake assembly comprises a closing limiting plate and a connecting rod, the middle part of the closing limiting plate is rotatably arranged on a frame of the breaker operating mechanism through a pin shaft, one end of the connecting rod is fixedly connected with the transmission rod, the other end of the connecting rod is arranged in a second kidney-shaped hole in the closing limiting plate in a penetrating mode, and when the transmission rod drives the connecting rod to move downwards, the connecting rod drives the closing limiting plate to rotate, so that supporting legs of the closing limiting plate are abutted against the closing drive assembly.
The invention further improves, the switching-on driving assembly comprises a switching-on coil, a switching-on first crank arm, a switching-on connecting plate, a switching-on second crank arm, a switching-on cam and a switching-on spring, wherein the switching-on first crank arm, the switching-on second crank arm and the switching-on cam are respectively rotatably arranged on a frame of the circuit breaker operating mechanism, the switching-on second crank arm is provided with a connecting arm with an obtuse angle and a switching-on energy storage retaining pawl, the switching-on cam is fixedly provided with a switching-on roller, two ends of the switching-on connecting plate are respectively rotatably connected to the connecting arm of the switching-on first crank arm and the connecting arm of the switching-on second crank arm, the switching-on spring is elastically abutted to one side surface of the switching-on roller, the switching-on energy storage retaining pawl is abutted to the other side surface opposite to the switching-on roller in a switching-off state, a switching-on coil push rod is arranged on the switching-on, when the switching-on, a supporting leg of the switching-on limiting plate is separated from a braking point of the switching-on first crank arm, the switching-on coil is driven to push the coil push the first crank arm after receiving a switching-on signal, and the switching-on push rod rotates the switching-on roller to push the switching-on roller, and the switching-on main shaft is rotated to drive the switching-on roller to rotate the switching-on roller, and the switching-on main shaft to rotate the switching-on main shaft.
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 sleeved and fixed 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.
The knife switch type three-station mechanism comprises a key shaft, a rotary valve, a frame, a position conversion plate and a driving plate, wherein the position conversion plate is arranged on the front side of the frame, the position conversion plate is arranged on the front side of the position conversion plate in a rotating mode through a pin shaft, the limiting shaft is rotatably arranged on the frame, the key shaft is fixedly connected to the front end of the limiting shaft, 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 is formed on the front side of the driving plate, which is close to the top end, a second sliding pin is formed on the rear side of the driving plate, which is close to the key shaft, a sliding groove extending along the center line is formed on the position of the limiting shaft, the first sliding pin penetrates through the position conversion plate, and the second sliding groove is formed in the position, which is close to the position of the driving plate, and the idle groove is formed in the idle groove.
As a further improvement of the present invention, the knife-switch type three-station mechanism further includes an operation panel, an isolation operation shaft and a ground operation shaft, wherein 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 mounted 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 mounted 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 operation panel and the position conversion plate, the isolation operation shaft and the ground operation shaft are rotatably mounted on the frame, and isolation operation holes corresponding to the isolation operation shaft, ground operation holes corresponding to the ground operation shaft and key operation holes corresponding to the key shaft are formed on the operation panel.
The split type interlocking mechanism for the inflatable cabinet has the beneficial effects that the first interlocking crank arm is arranged on the main shaft of the operating mechanism of the inflatable cabinet, the limiting shaft is connected to the key shaft of the disconnecting link type three-station mechanism, and the closing braking component, the driving piece, the transmission component and the resetting component are arranged between the first interlocking crank arm and the limiting shaft, so that the function that when the breaker of the inflatable cabinet is in a closing state, the rotary valve of the three-station mechanism cannot be opened by rotating the key to perform manual operation is realized, and meanwhile, the function that when the three-station mechanism is in a separating state, the breaker cannot be closed by manual operation is also realized. Therefore, the invention realizes the mechanical interlocking function between the three-station isolation grounding switch and the breaker of the inflatable cabinet and has the advantages of simple structure, active interlocking, safety and reliability.
Drawings
FIG. 1 is a front view of a split interlock mechanism of an inflatable cabinet of the present invention;
FIG. 2 is a perspective view of the front view of the split interlock mechanism of the inflatable cabinet of the present invention;
FIG. 3 is a perspective view of the rear view of the split interlock mechanism of the inflatable cabinet of the present invention;
FIG. 4 is a schematic view of a knife-switch three-position mechanism according to the present invention;
fig. 5 is a schematic structural view of a circuit breaker operating mechanism according to the present invention;
the following description is made with reference to the accompanying drawings:
1-limit shaft, 2-first interlocking crank arm, 21-disc, 22-square column, 3-closing brake component, 31-closing limit plate, 311-second kidney-shaped hole, 312-support leg, 32-connecting rod, 4-driving piece, 5-transmission component, 51-transmission rod, 511-pin hole, 52-interlocking plate, 521-first vertical plate, 522-first horizontal plate, 523-notch groove, 524-second horizontal plate, 525-second vertical plate, 5251-first kidney-shaped hole, 6-reset component, 61-fixed bent plate, 611-support arm, 62-reset spring, 7-pressing piece, 110-key shaft, 120-rotating valve, 121-chute, 130-frame, 140-position conversion plate, 141-empty avoidance groove, 142-first bent plate, 150-driving plate, 151-first sliding pin, 152-second sliding pin, 160-pin shaft, 170-operation panel, 171-second bent 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 detent, 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. 1,2, 3 and 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 breaker operating mechanism of the inflatable cabinet, 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, the limiting shaft is fixedly connected with a key shaft 110 of the disconnecting link type three-station mechanism, the first interlocking crank arm is fixedly connected with a main shaft 210 of the breaker operating mechanism, the driving piece is mounted 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 opposite to the first interlocking crank arm up and down; the switch-on brake component is arranged in the middle of the transmission component, when the 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 component, so that the top end of the transmission component abuts against the driving piece to brake the limiting shaft, the key can not operate the key shaft to open the rotary valve 120 of the switch-type three-station mechanism, the breaker of the gas-filled cabinet is switched off, and when the key shaft is required to operate the key shaft to open the rotary valve of the switch-type three-station mechanism, the first interlocking crank arm on the main shaft rotates to a position separating from the bottom end of the transmission component, the key shaft can rotate reversely or clockwise through the limiting shaft to drive the driving piece to enable one end of the driving piece to downwards drive the transmission component and the switch-on brake component, so that the switch-on brake component brakes the switch-on driving component 220 of the breaker operating mechanism, and when the rotary key closes the rotary valve, the energy storage of the reset component is released, and the closing brake component, the transmission component 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 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 component, the driving piece, the transmission component and the resetting component are arranged between the first interlocking crank arm and the limiting shaft, so that when the breaker of the gas charging cabinet is in a switching-on state, the function of manual operation cannot be carried out by rotating the key to open the rotary valve of the three-station mechanism, and meanwhile, the function of switching-on the breaker cannot be realized in the process of manually operating the three-station mechanism in a switching-off state. Therefore, the invention realizes the mechanical interlocking function between the disconnecting link type three-station mechanism and the 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:
In the closing state of the circuit breaker, the first interlocking crank arm on the main shaft of the circuit breaker operating mechanism just rotates to a position abutting against the bottom end of the transmission assembly, for example, the first interlocking crank arm just faces upwards, at the moment, the transmission assembly cannot move downwards, the top end of the transmission assembly just abuts against a driving piece arranged on the limiting shaft, the limiting shaft and the key shaft cannot rotate, namely, the limiting shaft and the key shaft are braked, so that the key shaft cannot be operated through the key, namely, the rotary valve of the three-station mechanism is locked, the rotary valve cannot rotate reversely or clockwise, and cannot be opened, so that the rotary valve blocks the isolation operating shaft and the grounding operating shaft of the three-station isolation grounding switch, and the three-station mechanism cannot be operated manually.
The breaker brake-separating state, the epaxial first interlocking crank of circuit breaker operating device's main shaft rotates certain angle, take off transmission assembly's bottom, say an inward rotation acute angle, at this moment, transmission assembly can downwardly move, the driving piece is not locked, spacing axle and key shaft can rotate, just also can operate the key shaft through the key, and then drive rotary valve contrary or clockwise rotation through the key shaft, the rotary valve of three station mechanism has been unlocked promptly, at this moment, can open the rotary valve, three station mechanism of manual operation through operating handle. For example, when the isolation operation shaft of the three-station isolation grounding switch needs to be manually operated, the key is operated to drive the rotary valve to rotate anticlockwise through the key shaft, so that a driving piece (such as a pin rod) arranged on the limiting shaft moves downwards, and the transmission assembly is driven to move downwards. In order to ensure that the breaker cannot be switched on in the manual operation process of the three-station mechanism, the invention is provided with the switching-on brake assembly, namely, when the transmission assembly is driven downwards, the switching-on brake assembly is driven to move downwards at the same time, and the switching-on brake assembly brakes the switching-on drive assembly of the breaker operating mechanism, namely, when the three-station mechanism is operated manually, the switching-on function of the breaker is locked, and the situation that the switching-on coil is touched by misoperation or the background personnel is misoperation, so that the breaker is switched on can be avoided.
In the structure, the reset component is used for resetting the transmission component, the closing brake component and the driving piece, so that the closing brake component can unlock the closing driving component after the three-station mechanism is operated. And the driving piece can reset to the initial position, even if the rotary valve is positioned at the middle position, 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 reversely or clockwise rotates, so that the driving piece can adopt a pin rod mode, the pin rod transversely penetrates into the pin hole on the limiting shaft, namely, the transmission assembly can be driven to move downwards through the pin rod no matter whether the limiting shaft rotates anticlockwise or clockwise. But not limited thereto, the driving member may be in other forms 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 piece, a notch groove 523 for 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 from top to bottom. Like this, can realize the function of both ends about the simultaneous butt driving piece through 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 is 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 in the second vertical plate, and the second vertical plate is fixedly connected with the transmission rod through fasteners 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 is not opposite to the first interlocking crank arm on the main shaft up and down is met. If the driver is just above the first interlocking lever, the second horizontal plate may be omitted and the first and second vertical plates combined 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 includes 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 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 movably penetrates through the reset spring and the through holes of the two support arms, and the transmission rod moves downwards to compress the reset spring to store energy. Therefore, the function that the reset transmission assembly drives the closing brake assembly to reset is realized through the cooperation 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 function of limiting and guiding the transmission rod can be achieved. As a preferred embodiment, the reset assembly is composed of the fixed curved plate 611 and the reset spring 62, and the function of the reset assembly is realized, but not limited to, in other structures, the reset assembly may also be composed of the fixed plate, the guide post and the reset spring, at this time, a connecting piece may be added on the transmission rod, the fixed plate is mounted on the frame of the circuit breaker operating mechanism, the guide post is mounted between the connecting piece and the fixed plate, and the reset spring is sleeved on the guide post and is located between the connecting piece and the fixed plate.
Preferably, the transmission rod moves downwards to compress the energy storage structure of the return spring is that a pressing pin and a pressing sheet 7 are arranged on the transmission rod, 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 return spring and the pressing pin. Therefore, by arranging the pin hole on the transmission rod and installing the pressing pin in the pin hole, the pressing pin can drive the pressing sheet to compress the reset spring for energy storage when moving downwards along with the transmission rod.
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 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, the other end of the connecting rod is arranged in a second kidney-shaped hole 311 in the closing limiting plate in a penetrating mode, and when the transmission rod drives the connecting rod to move downwards, the connecting rod drives the closing limiting plate to rotate, so that supporting legs 312 of the closing limiting plate are abutted against the closing drive assembly.
Preferably, the switch-on driving assembly comprises a switch-on coil 221, a switch-on first crank arm 222, a switch-on connecting plate 223, a switch-on second crank arm 224, a switch-on cam 225 and a switch-on spring 226, wherein the switch-on first crank arm, the switch-on second crank arm and the switch-on cam are respectively rotatably mounted on a frame of the circuit breaker operating mechanism, the switch-on second crank arm is provided with a connecting arm 2241 with an obtuse angle and a switch-on energy storage retaining pawl 2242, a switch-on roller 2251 is fixed on the switch-on cam, two ends of the switch-on connecting plate are respectively rotatably connected to the connecting arms of the switch-on first crank arm and the switch-on second crank arm, the switch-on energy storage retaining pawl is abutted to the other side surface opposite to the switch-on roller in the switch-on state, a switch-on coil push rod 2211 is arranged on the switch-on coil, a support leg of the switch-on limiting plate is separated from a brake point of the switch-on first crank arm, the coil pushes the coil to push the switch-on roller to rotate, and the switch-on second crank arm pushes the switch-on roller to rotate, and the switch-on main brake is pushed by the switch-on roller to rotate, and the switch-on main brake is separated from the switch-on roller. Therefore, through the cooperation between the support legs of the closing limiting plate and the closing first crank arm of the closing driving assembly, the locking and unlocking functions of the closing driving assembly are realized, and the function that the circuit breaker cannot be closed in the process of manually operating the three-position mechanism in the opening state is realized. In this embodiment, the cooperation between the closing limiting plate and the closing first lever of the gate driving assembly is adopted, but the cooperation between the closing limiting plate and the closing second lever may also be adopted according to the need in other embodiments.
Preferably, the transmission rod is square, the first interlocking crank arm comprises a disc body 21 and a square column 22, the disc body is sleeved and fixed on the main shaft, the square column is connected to the outer edge of the disc body, and the square column is vertically opposite to the bottom end of the transmission rod. Like this, through the cooperation of square transfer line and the square post of first interlocking crank arm, can realize locking transfer line downwardly moving's function, but not limited to this, can also design into other mutual cooperation as required to carry out the structure of butt, the transfer line also can be other shapes.
The split type interlocking mechanism of the inflatable cabinet is suitable for all knife gate type three-station mechanisms which are longitudinally arranged, and preferably 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 position of 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, the key shaft penetrates out from 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 of the front side of the driving plate close to the top, a second sliding pin 152 is formed at the position of the rear side of the driving plate close to the central line of the shaft, a sliding groove is formed in the position of the rotary valve close to the central line of the first sliding groove, the sliding groove is formed in the position of the sliding groove is formed in the sliding groove, and the sliding groove is formed in the position of the sliding groove is formed close to the position of the central line of the second sliding groove. Thus, when the key shaft is operated by the key, the key shaft drives the driving plate to rotate, and the driving plate can further drive the rotary valve to rotate reversely or clockwise (anticlockwise or clockwise), so that the rotary valve is positioned at three positions of shielding the isolation operation shaft, shielding the grounding operation shaft and shielding the isolation operation shaft and the grounding operation shaft simultaneously. 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-switch type three-station mechanism further comprises an operation panel 170, an isolation operation shaft 180 and a grounding operation shaft 190, wherein 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 mounted on the front side of the frame through the first bending plates, second bending plates 171 are formed on the left side and the right side of the operation panel, the operation panel is mounted 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 operation panel and the position conversion plate, the isolation operation shaft and the grounding operation shaft are rotatably mounted on the frame, and isolation operation holes 172 corresponding to the isolation operation shaft, grounding operation holes 173 corresponding to the grounding operation shaft and key operation holes 174 corresponding to the key shaft are formed on the operation panel. Here, the operation panel is used for enclosing the rotating valve, the driving plate and other parts, plays a role in protection, has attractive appearance, and is provided with an isolation operation hole, a grounding operation hole and a key operation hole, so that the operation of the isolation operation shaft, the grounding operation shaft and the key shaft can be realized. An operation mark can be set on the operation panel according to the requirement.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The foregoing description is only of a preferred embodiment of the invention, which can be practiced in many other ways than as described herein, so that the invention is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention without departing from the technical solution of the present invention still falls within the scope of the technical solution of the present invention.
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| CN202010491103.8A CN111508788B (en) | 2020-06-02 | 2020-06-02 | Split interlocking mechanism of inflatable cabinet |
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| CN111508788B true CN111508788B (en) | 2025-02-11 |
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| CN111933476B (en) * | 2020-08-31 | 2024-09-17 | 赫兹曼电力（广东）有限公司 | Interlocking structure used between breaker operating mechanism and three-station operating mechanism |
| CN112413142A (en) * | 2020-11-11 | 2021-02-26 | 江苏兆胜空调有限公司 | Double-layer blade mechanical self-limiting fireproof air valve |
| 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 |
| CN112563066B (en) * | 2020-12-04 | 2023-12-29 | 武汉倍诺德开关有限公司 | Miniaturized multistation operating device |
| CN112614714A (en) * | 2021-01-06 | 2021-04-06 | 珠海康晋电气股份有限公司 | Operating device for solid insulated switch and solid insulated switch |
| 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 |
| CN215644169U (en) * | 2021-05-27 | 2022-01-25 | 默飓电气有限公司 | Auxiliary device for electric auxiliary switch |
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| CN212032970U (en) * | 2020-06-02 | 2020-11-27 | 兰姆达电气技术（苏州）有限公司 | Split type interlocking mechanism of gas charging cabinet |
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| CN202423064U (en) * | 2012-01-10 | 2012-09-05 | 昆明东控电器成套设备有限公司 | Grounding switch, circuit breaker and disconnecting switch interlocking device |
| CN103500673B (en) * | 2013-10-15 | 2015-07-29 | 杭州电器开关有限公司 | A kind of interlocking type inflatable load switch and interlocking method thereof |
| CN104851721A (en) * | 2015-04-27 | 2015-08-19 | 苏州鱼得水电气科技有限公司 | Power distribution switch for high-low-voltage switch cabinet |
| CN110400709B (en) * | 2019-06-13 | 2022-06-17 | 广州致新电力科技有限公司 | Interlocking device for circuit breaker and three-position switch |
| CN111192776B (en) * | 2020-02-24 | 2025-01-07 | 正泰电气股份有限公司 | Mechanical interlocking device for disconnector and circuit breaker |
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| CN212032970U (en) * | 2020-06-02 | 2020-11-27 | 兰姆达电气技术（苏州）有限公司 | Split type interlocking mechanism of gas charging cabinet |
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