CN108172425B - Intelligent circuit breaker modularization operating mechanism - Google Patents
Intelligent circuit breaker modularization operating mechanism Download PDFInfo
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- CN108172425B CN108172425B CN201810132693.8A CN201810132693A CN108172425B CN 108172425 B CN108172425 B CN 108172425B CN 201810132693 A CN201810132693 A CN 201810132693A CN 108172425 B CN108172425 B CN 108172425B
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- closing
- interlocking
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- crank arm
- pawl
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- 230000007246 mechanism Effects 0.000 title claims abstract description 97
- 238000004146 energy storage Methods 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 37
- 230000009471 action Effects 0.000 claims description 30
- 238000005452 bending Methods 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3005—Charging means
- H01H3/3015—Charging means using cam devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
- H01H3/58—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using friction, toothed, or other mechanical clutch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to an intelligent circuit breaker modularized operating mechanism, which comprises a mechanism mounting plate, a closing pawl, an energy storage shaft, a cam, an energy storage crank arm and a closing spring, wherein a pin bearing capable of acting on the closing pawl extends out of the cam; the operating mechanism further comprises a manual closing interlocking module, a pushing handcart interlocking module and a clutch module. The intelligent circuit breaker mechanism has the advantages of being capable of preventing misoperation caused by secondary jump of the circuit breaker mechanism, preventing misoperation of the circuit breaker in a closing state of the circuit breaker, preventing misoperation of the circuit breaker in the advancing process of the pushing handcart, and being light in operation and long in service life.
Description
Technical Field
The invention relates to the field of electrical equipment, in particular to an intelligent circuit breaker.
Background
In an electric power system, a circuit breaker is widely used as an electric energy distribution device, and a circuit breaker operating mechanism can perform switching-on or switching-off actions to realize connection or disconnection of electric equipment connected with the circuit breaker operating mechanism.
The circuit breaker is required to be operated, the mechanism can be manually or electrically operated to perform switching-on operation when the mechanism is firstly switched off, and the mechanism cannot perform secondary manual switching-on operation after switching-on, so that the mechanism cannot allow the secondary switching-on operation after switching-on operation is completed. Therefore, in order to prevent the malfunction of the circuit breaker mechanism caused by the second jump, it is necessary to design a manual closing interlock mechanism to avoid the occurrence of the above-mentioned situation.
Large circuit breakers typically require installation, maintenance, debugging, etc. by propelling the cart. The circuit breaker operating mechanism and the pushing handcart have an interlocking requirement, and particularly, the circuit breaker only allows switching-on and switching-off operation at a test or working position, and cannot be switched on in the advancing process of the pushing handcart, and the pushing handcart cannot swing in or swing out when the circuit breaker is in a switching-on state. Therefore, in order to prevent the circuit breaker from being operated by mistake in the closing state and during the travel of the pushing handcart, an interlocking structure of the circuit breaker mechanism and the pushing handcart needs to be designed to avoid the occurrence of the above situations.
Because the operating mechanism of the circuit breaker is electric or manual energy storage, the torque is released after the energy storage is in place, so that the retaining mechanism after the energy storage is ensured not to be influenced by other torques except the pulling force of the closing spring, and the service life of the retaining mechanism and the portability of the closing action operating force are protected. Therefore, whether to reasonably design the clutch device of the circuit breaker directly affects the service life and the operation convenience of the circuit breaker, and how to design a more reasonable clutch is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide an intelligent circuit breaker modularized operating mechanism with a manual closing interlocking module, a pushing handcart interlocking module and a clutch module, wherein the manual closing interlocking module can prevent misoperation generated by secondary jump of a circuit breaker mechanism, the pushing handcart interlocking module can prevent misoperation of the pushing handcart when the circuit breaker is in a closing state, and the intelligent circuit breaker mechanism and the pushing handcart of the circuit breaker in the advancing process of the pushing handcart can prevent misoperation of the clutch module, the clutch module can realize reliable clutch, the torque is convenient to disengage, the damage and the blocking of the mechanism are avoided, the operation is light, and the service life is long.
In order to achieve the above purpose, the invention adopts the following technical scheme: the intelligent circuit breaker modularized operating mechanism comprises a mechanism mounting plate, a closing pawl, an energy storage shaft, a cam, an energy storage crank arm and a closing spring, wherein a pin bearing capable of acting on the closing pawl extends out of the cam, the closing pawl is rotationally arranged on the mechanism mounting plate, the energy storage shaft is rotationally arranged on the mechanism mounting plate, the energy storage crank arm is fixedly arranged on the energy storage shaft, the closing spring is arranged between the mechanism mounting plate and the energy storage crank arm, and the cam is fixedly arranged on the energy storage shaft; the method is characterized in that: the operating mechanism further comprises a manual closing interlocking module, a pushing handcart interlocking module and a clutch module;
the manual closing interlocking module comprises the mechanism mounting plate, a closing linkage piece, a closing pawl, a cam, a main shaft interlocking crank arm and an interlocking plate, wherein a limiting boss is arranged on the closing pawl, and an interlocking pin is arranged on the interlocking plate; the closing linkage piece is movably arranged on the mechanism mounting plate, the main shaft interlocking crank arm is rotatably arranged on the mechanism mounting plate, the interlocking plate is slidably arranged on the mechanism mounting plate, the closing linkage piece can be used for linking the closing pawl, the closing pawl can be used for linking the cam, and the main shaft interlocking crank arm can be used for linking the interlocking plate; when the brake is separated, the limiting boss and the locking pin keep a certain distance and are not close, and at the moment, the brake-closing pawl can be lifted upwards; when in closing, the closing linkage piece drives the closing pawl to lift upwards, the closing pawl is separated from a pin bearing on the cam, so that the cam is unbalanced and does work under the action of the closing spring, and thus one-time closing action is completed, meanwhile, the main shaft interlocking crank arm rotates downwards, the interlocking plate slides downwards under the action of dead weight until the interlocking pin contacts the limiting boss, at the moment, the interlocking pin limits the closing pawl to rotate, and the closing pawl cannot lift upwards under the action of external force, so that secondary closing operation cannot be performed;
the pushing handcart interlocking module comprises the mechanism mounting plate, the closing pawl, the main shaft interlocking crank arm, an interlocking bent plate, a reset tension spring and a pushing handcart interlocking plate, wherein a pawl boss extends downwards from the closing pawl, a crank arm boss extends inwards from the main shaft interlocking crank arm, an interlocking opening is formed in the outer side of the interlocking bent plate, and an interlocking claw extends from the upper side of the interlocking bent plate; the interlocking bending plate is arranged on the mechanism mounting plate in a sliding manner, the reset tension spring is arranged between the interlocking bending plate and the mechanism mounting plate and forces the interlocking bending plate to slide downwards, the pushing handcart interlocking plate is arranged on the circuit breaker mechanism in a rotating manner, and the pushing handcart interlocking plate can be linked with the interlocking bending plate; when the pushing handcart is in a test or working position and the circuit breaker is in a breaking state, the pushing handcart interlocking plate is in a lower state and plays a role in locking the pushing handcart, meanwhile, the interlocking bent plate is pulled downwards to the lowest point under the action force of a reset tension spring, the crank arm boss does not enter the interlocking port, at the moment, the main shaft interlocking crank arm can rotate downwards, and the closing pawl can be lifted upwards to perform closing action; when the pushing handcart is in a test or working position and the circuit breaker is in a closing state, the crank arm boss enters the interlocking port, and the main shaft interlocking crank arm limits the interlocking bent plate to slide upwards, so that the pushing handcart interlocking plate cannot be lifted upwards, and the pushing handcart cannot be operated; when the pushing handcart is in a travelling process and the circuit breaker is in a switching-off state, the pushing handcart interlocking plate is in a lifting state, the pushing handcart can normally operate, and at the moment, the pushing handcart interlocking plate overcomes the tension of the reset tension spring to enable the interlocking bent plate to be lifted upwards together until the interlocking claw contacts the pawl boss, and the interlocking bent plate limits the switching-on pawl to rotate, so that the switching-on pawl cannot perform switching-on operation;
the clutch module comprises a mechanism mounting plate, a closing pawl, an energy storage shaft, an energy storage crank arm, a closing spring, a cam, a clutch gear, a clutch limiting disc and a driving gear, wherein the clutch gear comprises an outer gear, a transmission disc and a movable tongue, the transmission disc is fixedly arranged on the energy storage shaft, the outer gear is rotationally arranged on the periphery of the transmission disc, a clutch groove is formed in the inner side of the outer gear, the movable tongue is telescopically arranged on the transmission disc, the movable tongue can enter the clutch groove, one side of the movable tongue is in vertical contact with one side of the clutch groove, the movable tongue is in inclined contact with the other side of the clutch groove, when the movable tongue is in vertical contact with the clutch groove, the outer gear can drive the transmission disc to synchronously rotate through the movable tongue, when the movable tongue is in inclined contact with the clutch groove, the outer gear is extruded to not drive the transmission disc to rotate, and the clutch limiting disc is fixedly arranged on the mechanism mounting plate and can act on the outer gear to be tangent to the outer gear and drive the movable tongue to rotate, and the clutch limiting disc is meshed with the outer gear; when energy is needed to be stored, the driving gear drives the external gear to rotate anticlockwise, at the moment, the movable tongue is in contact with the clutch groove, the external gear drives the transmission disc to rotate through the movable tongue, the transmission disc drives the energy storage shaft to rotate, the energy storage shaft drives the energy storage crank arm to rotate, the energy storage crank arm stretches the closing spring to store energy, meanwhile, the energy storage shaft drives the cam to rotate, when the pin bearing on the cam approaches the closing brake, the clutch limiting disc extrudes the movable tongue, so that the movable tongue is separated from the clutch groove, then the cam continues to rotate anticlockwise under the action of the spring force of the closing spring until the pin bearing contacts the closing brake and keeps balance, and at the moment, the energy storage is completed; when the switch-on is needed, the switch-on pawl is lifted upwards, the switch-on pawl is separated from the bearing with the pin, so that the cam is out of balance and rotates anticlockwise under the action of the switch-on spring, at the moment, the movable tongue and the clutch groove are in inclined surface contact, the external gear extrudes the movable tongue when the transmission disc rotates, and the external gear does not limit the rotation of the transmission disc, so that the switch-on action is completed.
As an improvement, the manual closing interlocking module further comprises a closing and opening indication, wherein the middle section of the closing and opening indication is rotationally connected to the mechanism mounting plate, the left end of the closing and opening indication is rotationally connected to the interlocking plate, and a tension spring is arranged between the right end of the closing and opening indication and the mechanism mounting plate; when the brake is opened, the main shaft interlocking crank arm is lifted upwards, the main shaft interlocking crank arm pushes the interlocking plate to be kept at the uppermost position, at the moment, the left end of the brake closing and opening indication is lifted, the tension spring is in a stretching state, and the brake closing and opening indication shows a brake opening state; when the main shaft interlocking crank arm rotates downwards during closing, the tension spring contracts, the closing and opening indication rotates downwards, meanwhile the interlocking plate slides downwards, the right end of the closing and opening indication is lifted at the moment, the tension spring is in a contracted state, and the closing and opening indication displays a closing state.
Preferably, the closing linkage piece comprises a manual closing rod, a closing crank arm and a closing pulling plate, wherein the manual closing rod is arranged on the mechanism mounting plate in a sliding manner, the closing crank arm is arranged on the mechanism mounting plate in a rotating manner, and the closing pulling plate is arranged on the mechanism mounting plate in a movable manner; when the switch-on is performed, the manual switch-on lever moves to the right side, contacts the switch-on crank arm and enables the switch-on crank arm to act, and pulls the switch-on pull plate, so that the switch-on pawl is lifted upwards.
Preferably, the clutch gear further comprises a pressure spring, a guide pin and a pressing plate, wherein the pressure spring is arranged between the transmission disc and the movable tongue to force the movable tongue to be ejected outwards, the guide pin is fixedly arranged on the movable tongue, the pressing plate is fixedly arranged on the transmission disc, and the guide pin is slidably arranged on the pressing plate and used for limiting the telescopic direction of the movable tongue.
Further preferably, the drive gear includes a manual drive gear and an electric drive gear.
Preferably, the clutch limiting plate starts to contact the movable tongue when the pin bearing is three degrees further away from the closing pawl.
Compared with the prior art, the invention has the advantages that:
the manual closing interlocking module is arranged through the cooperation of the limiting boss and the interlocking pin, so that the upward lifting of the closing pawl after closing can be limited, and the secondary manual closing operation cannot be performed, thereby playing a role in preventing misoperation caused by secondary jump of the circuit breaker mechanism.
On one hand, the pushing handcart interlocking module ensures that the pushing handcart interlocking plate cannot be lifted upwards when the circuit breaker is in a closing state through the matching arrangement of the crank arm boss and the interlocking opening, and the pushing handcart cannot be operated in the state, so that the action of preventing misoperation of the pushing handcart when the circuit breaker is in the closing state is achieved; on the other hand, through the cooperation setting of interlocking claw and pawl boss, guarantee to impel the handcart and close a floodgate pawl unable rotation in advancing the in-process, realize impeing the handcart and can prevent the combined floodgate in advancing the in-process of advancing, played the effect that prevents impeing the handcart and advance the circuit breaker maloperation in-process.
The clutch module enables torque to be quickly released after energy is stored in place through the arrangement of the clutch gear and the clutch limiting disc, so that the damage of an operating mechanism is avoided; simultaneously, the movable tongue is contacted with the inclined plane at the other side of the clutch groove, so that the external gear can not limit the rotation of the transmission disc, namely the rotation of the energy storage shaft and the cam, when the switch is closed, and the locking of the operating mechanism is avoided. The structure can prolong the service life of the operating mechanism and can facilitate the operation of the operating mechanism.
Drawings
Fig. 1 to 3 are perspective views schematically showing a preferred embodiment according to the present invention.
Fig. 4 is a front view (open state) of the manual closing interlock module in a preferred embodiment according to the present invention.
Fig. 5 is a rear view (open state) of the manual closing interlock module in a preferred embodiment according to the present invention.
Fig. 6 is a side view (open state) of a manual closing interlock module according to a preferred embodiment of the present invention.
Fig. 7 is a front view (closing state) of a manual closing interlock module in a preferred embodiment according to the present invention.
Fig. 8 is a rear view (closing state) of the manual closing interlock module in a preferred embodiment according to the present invention.
Fig. 9 is a side view (closing state) of a manual closing interlock module in accordance with a preferred embodiment of the present invention.
Fig. 10 is a front view of a propulsion cart interlock module (propulsion cart in test or operational position, circuit breaker in closed state) in accordance with a preferred embodiment of the present invention.
Fig. 11 is a side view of a propulsion cart interlock module (propulsion cart in test or operational position, circuit breaker in closed state) in accordance with a preferred embodiment of the present invention.
Fig. 12 is a front view of a propulsion cart interlock module (propulsion cart in test or operational position, circuit breaker in closed state) in accordance with a preferred embodiment of the present invention.
Fig. 13 is a side view of a propulsion cart interlock module (propulsion cart in test or operational position, circuit breaker in closed state) in accordance with a preferred embodiment of the present invention.
Fig. 14 is a front view of the propulsion cart interlock module (the propulsion cart is in the process of traveling and the circuit breaker is in the tripped state) in accordance with a preferred embodiment of the present invention.
Fig. 15 is a side view of a propulsion cart interlock module (propulsion cart in travel and circuit breaker in open state) in accordance with a preferred embodiment of the present invention.
Fig. 16 is a schematic perspective view of a clutch module according to a preferred embodiment of the present invention.
Fig. 17 is a schematic perspective view of a clutch gear according to a preferred embodiment of the present invention.
Fig. 18 is a schematic view showing an internal structure of a clutch gear in accordance with a preferred embodiment of the present invention.
Fig. 19 is a front view of a clutch module in a non-energized state in accordance with a preferred embodiment of the present invention.
Fig. 20 is a side view of a clutch module in a non-energized state in accordance with a preferred embodiment of the present invention.
Fig. 21 is a front view of a clutch module in a state of stored energy according to a preferred embodiment of the present invention.
Fig. 22 is a side view of a clutch module in a state of stored energy according to a preferred embodiment of the present invention.
Description of the embodiments
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
As shown in fig. 1 to 22, a preferred embodiment of the present invention includes a mechanism mounting plate 1, a closing latch 2, an energy storage shaft 3, an energy storage crank arm 4, a closing spring 5 and a cam 6, where a pin bearing 61 that can act on the closing latch 2 extends from the cam 6. The switching-on pawl 2 is rotationally arranged on the mechanism mounting plate 1, the energy storage shaft 3 is rotationally arranged on the mechanism mounting plate 1, the energy storage crank arm 4 is fixedly arranged on the energy storage shaft 3, the switching-on spring 5 is arranged between the mechanism mounting plate 1 and the energy storage crank arm 4, and the cam 6 is fixedly arranged on the energy storage shaft 3. The key point is that the mechanism is also provided with a manual closing interlocking module 100, a pushing handcart interlocking module 200 and a clutch module 300. The three modules are relatively independent, but also have overlapping portions, so that part of the parts repeatedly appear in each module, and the following emphasis is given to the three modules respectively:
as shown in fig. 4 to 9, the manual closing interlocking module 100 has a specific structure: the mechanism comprises a mechanism mounting plate 1, a closing linkage 102, a closing pawl 2, a cam 6, a main shaft interlocking crank arm 105 and an interlocking plate 106, wherein a limiting boss 21 is arranged on the closing pawl 2, and an interlocking pin 161 is arranged on the interlocking plate 106. The concrete connection mode is as follows: the closing linkage piece 102 is movably arranged on the mechanism mounting plate 1, the main shaft interlocking crank arm 105 is rotatably arranged on the mechanism mounting plate 1, the interlocking plate 106 is slidably arranged on the mechanism mounting plate 1, the closing linkage piece 102 can be linked with the closing pawl 2, the closing pawl 2 can be linked with the cam 6 through the pin bearing 61, and the main shaft interlocking crank arm 105 can be linked with the interlocking plate 106.
The operating principle of the manual closing interlock module 100 is as follows: when the brake is released, the limiting boss 21 and the locking pin 161 keep a certain distance to be not close, and at the moment, the brake-closing pawl 2 can be lifted upwards; during closing, the closing linkage piece 102 drives the closing pawl 2 to lift upwards, the closing pawl 2 is separated from the pin bearing 61 on the cam 6, so that the cam 4 is unbalanced and does work under the action of the closing spring 5, and thus one-time closing action is completed, meanwhile, the main shaft interlocking crank arm 105 rotates downwards, the interlocking plate 106 slides downwards under the action of dead weight until the interlocking pin 161 contacts the limiting boss 21, at the moment, the interlocking pin 161 limits the closing pawl 2 to rotate, and the closing pawl 2 cannot lift upwards under the action of external force, so that secondary closing operation cannot be performed.
In addition, the manual closing interlocking module 100 further includes a closing and opening indication 107, a middle section of the closing and opening indication 107 is rotatably connected to the mechanism mounting plate 1, a left end of the closing and opening indication 107 is rotatably connected to the interlocking plate 106, and a tension spring 108 is disposed between a right end of the closing and opening indication 107 and the mechanism mounting plate 1. When the brake is released, the main shaft interlocking crank arm 105 is lifted upwards, the main shaft interlocking crank arm 105 pushes the interlocking plate 106 to be kept at the uppermost position, at the moment, the left end of the brake closing and releasing indication 107 is lifted, the tension spring 108 is in a stretching state, and the brake closing and releasing indication 107 displays a brake releasing state; when the main shaft interlocking crank arm 105 rotates downwards during closing, the tension spring 108 contracts, the closing and opening indication 107 rotates downwards, the interlocking plate 106 slides downwards, at the moment, the right end of the closing and opening indication 107 is lifted, the tension spring 108 is in a contracted state, and the closing and opening indication 107 displays a closing state.
Further specifically, the closing linkage 102 includes a manual closing rod 121, a closing crank arm 122 and a closing pulling plate 123, where the manual closing rod 121 is slidably disposed on the mechanism mounting plate 1, the closing crank arm 122 is rotatably disposed on the mechanism mounting plate 1, and the closing pulling plate 123 is movably disposed on the mechanism mounting plate 1; when closing, the manual closing lever 121 moves rightward, contacts the closing lever 122, and moves the closing lever 122 to pull the closing pulling plate 123, thereby lifting the closing pawl 2 upward.
As shown in fig. 10 to 15, the specific structure of the push cart interlock module 200: the mechanism comprises a mechanism mounting plate 1, a closing pawl 2, a main shaft interlocking crank arm 105, an interlocking bent plate 204, a reset tension spring 205 and a pushing handcart interlocking 20 plate 6, wherein the closing pawl 2 extends downwards to form a pawl boss 22, the main shaft interlocking crank arm 105 extends inwards to form a crank arm boss 231, an interlocking opening 241 is formed in the outer side of the interlocking bent plate 204, and an interlocking claw 242 extends out of the upper side of the interlocking bent plate 204. The interlocking bending plate 204 is slidably arranged on the mechanism mounting plate 1, the reset tension spring 205 is arranged between the interlocking bending plate 204 and the mechanism mounting plate 1, the interlocking bending plate 204 is forced to slide downwards, the pushing handcart interlocking plate 206 is rotatably arranged on the circuit breaker mechanism, and the pushing handcart interlocking plate 206 can be interlocked with the interlocking bending plate 204.
The specific principle of operation of the propulsion cart interlock module 200 is as follows: as shown in fig. 10 and 11, when the pushing handcart is in the test or working position and the circuit breaker is in the opening state, the pushing handcart interlocking plate 206 is in the down state, which plays a role of locking the pushing handcart, meanwhile, the interlocking bent plate 204 is pulled down to the lowest point under the action force of the reset tension spring 205, the crank arm boss 231 does not enter the interlocking opening 241, at this time, the main shaft interlocking crank arm 105 can rotate downwards, and the closing pawl 2 can be lifted upwards to perform the closing action. As shown in fig. 12 and 13, the pushing handcart is in a test or working position, when the circuit breaker is in a closing state, the crank arm boss 231 enters the interlocking opening 241, and the main shaft interlocking crank arm 105 limits the interlocking bending plate 204 to slide upwards, so that the pushing handcart interlocking plate 206 cannot be lifted upwards, and the pushing handcart cannot be operated. As shown in fig. 14 and 15, when the pushing handcart is in the travelling process and the circuit breaker is in the opening state, the pushing handcart interlocking plate 206 is in the lifting state, the pushing handcart can normally operate, at this time, the pushing handcart interlocking plate 206 overcomes the tension of the reset tension spring 205, so that the interlocking bent plate 204 is lifted upwards together until the interlocking claw 242 contacts the latch boss 22, and the interlocking bent plate 204 limits the rotation of the closing latch 2, so that the closing latch 2 cannot perform closing operation.
As shown in fig. 16 to 22, the specific structure of the clutch module 300: the clutch gear 307 comprises an external gear 371, a transmission plate 372 and a movable tongue 373, wherein the transmission plate 372 is fixedly arranged on the energy storage shaft 3, the external gear 371 is rotationally arranged on the periphery of the transmission plate 372, a clutch groove 3711 is formed in the inner side of the external gear 371, the movable tongue 373 is telescopically arranged on the transmission plate 372, the movable tongue 373 can enter the clutch groove 3711, one side of the movable tongue 373 and one side of the clutch groove 3711 are in vertical surface contact, the movable tongue 373 is in inclined surface contact with the other side of the clutch groove 3711, when the external gear 373 rotates and the movable tongue 373 and the clutch groove 3711 are in vertical surface contact, the external gear 371 can drive the transmission plate 372 to synchronously rotate through the movable tongue 373, the movable tongue 373 is extruded when the movable tongue 373 is in inclined surface contact, the movable tongue 373 is not driven to rotate any more, the clutch limiting plate 308 is fixedly arranged on the mechanism mounting plate 1, the movable tongue 372 is tangent to the transmission plate 372 and can act on the movable tongue, and the driving gear 371 is meshed with the external gear 371, and the driving gear 371 is driven to rotate.
The clutch module 300 operates as follows: when energy storage is needed, the driving gear drives the external gear 371 to rotate anticlockwise, at the moment, the movable tongue 373 and the clutch groove 3711 are in vertical plane contact, the external gear 371 drives the transmission disc 372 to rotate through the movable tongue 373, the transmission disc 372 drives the energy storage shaft 3 to rotate, the energy storage shaft 3 drives the energy storage crank arm 4 to rotate, the energy storage crank arm 4 stretches the closing spring 5 to store energy, meanwhile, the energy storage shaft 3 drives the cam 6 to rotate, when the pin bearing 61 on the cam 6 approaches the closing pawl 2, the clutch limiting disc 308 presses the movable tongue 373 to enable the movable tongue 373 to be separated from the clutch groove 3711, then the cam 6 continues to rotate anticlockwise under the action of the elastic force of the closing spring 5 until the pin bearing 61 contacts the closing pawl 2 and keeps balanced, and at the moment, the energy storage is completed; when the switch-on is needed, the switch-on pawl 2 is lifted upwards, the switch-on pawl 2 is separated from the pin bearing 61, so that the cam 6 is out of balance and rotates anticlockwise under the action of the switch-on spring 5, at the moment, the movable tongue 373 and the clutch groove 3711 are in inclined surface contact, the external gear 371 presses the movable tongue 373 when the transmission disc 372 rotates, and the external gear 371 does not limit the rotation of the transmission disc 373, so that the switch-on action is completed.
Further specifically, the clutch gear 307 further includes a compression spring 374, a guide pin 375, and a pressing plate 376, where the compression spring 374 is disposed between the transmission disc 372 and the movable tongue 373 to force the movable tongue 373 to eject outwards, the guide pin 375 is fixedly disposed on the movable tongue 373, the pressing plate 376 is fixedly disposed on the transmission disc 372, and the guide pin 375 is slidably disposed on the pressing plate 376 to limit the expansion direction of the movable tongue 73.
The drive gears include a manual drive gear 309 and an electric drive gear 309'. In this embodiment, the clutch limiting plate 308 begins to contact the movable tongue 373 three degrees further from the closing pawl 2 than the pin bearing 61.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The intelligent circuit breaker modularized operating mechanism comprises a mechanism mounting plate, a closing pawl, an energy storage shaft, a cam, an energy storage crank arm and a closing spring, wherein a pin bearing capable of acting on the closing pawl extends out of the cam, the closing pawl is rotationally arranged on the mechanism mounting plate, the energy storage shaft is rotationally arranged on the mechanism mounting plate, the energy storage crank arm is fixedly arranged on the energy storage shaft, the closing spring is arranged between the mechanism mounting plate and the energy storage crank arm, and the cam is fixedly arranged on the energy storage shaft; the method is characterized in that: the operating mechanism further comprises a manual closing interlocking module, a pushing handcart interlocking module and a clutch module;
the manual closing interlocking module comprises the mechanism mounting plate, a closing linkage piece, a closing pawl, a cam, a main shaft interlocking crank arm and an interlocking plate, wherein a limiting boss is arranged on the closing pawl, and an interlocking pin is arranged on the interlocking plate; the closing linkage piece is movably arranged on the mechanism mounting plate, the main shaft interlocking crank arm is rotatably arranged on the mechanism mounting plate, the interlocking plate is slidably arranged on the mechanism mounting plate, the closing linkage piece can be used for linking the closing pawl, the closing pawl can be used for linking the cam, and the main shaft interlocking crank arm can be used for linking the interlocking plate; when the brake is separated, the limiting boss and the locking pin keep a certain distance and are not close, and at the moment, the brake-closing pawl can be lifted upwards; when in closing, the closing linkage piece drives the closing pawl to lift upwards, the closing pawl is separated from a pin bearing on the cam, so that the cam is unbalanced and does work under the action of the closing spring, and thus one-time closing action is completed, meanwhile, the main shaft interlocking crank arm rotates downwards, the interlocking plate slides downwards under the action of dead weight until the interlocking pin contacts the limiting boss, at the moment, the interlocking pin limits the closing pawl to rotate, and the closing pawl cannot lift upwards under the action of external force, so that secondary closing operation cannot be performed;
the pushing handcart interlocking module comprises the mechanism mounting plate, the closing pawl, the main shaft interlocking crank arm, an interlocking bent plate, a reset tension spring and a pushing handcart interlocking plate, wherein a pawl boss extends downwards from the closing pawl, a crank arm boss extends inwards from the main shaft interlocking crank arm, an interlocking opening is formed in the outer side of the interlocking bent plate, and an interlocking claw extends from the upper side of the interlocking bent plate; the interlocking bending plate is arranged on the mechanism mounting plate in a sliding manner, the reset tension spring is arranged between the interlocking bending plate and the mechanism mounting plate and forces the interlocking bending plate to slide downwards, the pushing handcart interlocking plate is arranged on the circuit breaker mechanism in a rotating manner, and the pushing handcart interlocking plate can be linked with the interlocking bending plate; when the pushing handcart is in a test or working position and the circuit breaker is in a breaking state, the pushing handcart interlocking plate is in a lower state and plays a role in locking the pushing handcart, meanwhile, the interlocking bent plate is pulled downwards to the lowest point under the action force of a reset tension spring, the crank arm boss does not enter the interlocking port, at the moment, the main shaft interlocking crank arm can rotate downwards, and the closing pawl can be lifted upwards to perform closing action; when the pushing handcart is in a test or working position and the circuit breaker is in a closing state, the crank arm boss enters the interlocking port, and the main shaft interlocking crank arm limits the interlocking bent plate to slide upwards, so that the pushing handcart interlocking plate cannot be lifted upwards, and the pushing handcart cannot be operated; when the pushing handcart is in a travelling process and the circuit breaker is in a switching-off state, the pushing handcart interlocking plate is in a lifting state, the pushing handcart can normally operate, and at the moment, the pushing handcart interlocking plate overcomes the tension of the reset tension spring to enable the interlocking bent plate to be lifted upwards together until the interlocking claw contacts the pawl boss, and the interlocking bent plate limits the switching-on pawl to rotate, so that the switching-on pawl cannot perform switching-on operation;
the clutch module comprises a mechanism mounting plate, a closing pawl, an energy storage shaft, an energy storage crank arm, a closing spring, a cam, a clutch gear, a clutch limiting disc and a driving gear, wherein the clutch gear comprises an outer gear, a transmission disc and a movable tongue, the transmission disc is fixedly arranged on the energy storage shaft, the outer gear is rotationally arranged on the periphery of the transmission disc, a clutch groove is formed in the inner side of the outer gear, the movable tongue is telescopically arranged on the transmission disc, the movable tongue can enter the clutch groove, one side of the movable tongue is in vertical contact with one side of the clutch groove, the movable tongue is in inclined contact with the other side of the clutch groove, when the movable tongue is in vertical contact with the clutch groove, the outer gear can drive the transmission disc to synchronously rotate through the movable tongue, when the movable tongue is in inclined contact with the clutch groove, the outer gear is extruded to not drive the transmission disc to rotate, and the clutch limiting disc is fixedly arranged on the mechanism mounting plate and can act on the outer gear to be tangent to the outer gear and drive the movable tongue to rotate, and the clutch limiting disc is meshed with the outer gear; when energy is needed to be stored, the driving gear drives the external gear to rotate anticlockwise, at the moment, the movable tongue is in contact with the clutch groove, the external gear drives the transmission disc to rotate through the movable tongue, the transmission disc drives the energy storage shaft to rotate, the energy storage shaft drives the energy storage crank arm to rotate, the energy storage crank arm stretches the closing spring to store energy, meanwhile, the energy storage shaft drives the cam to rotate, when the pin bearing on the cam approaches the closing brake, the clutch limiting disc extrudes the movable tongue, so that the movable tongue is separated from the clutch groove, then the cam continues to rotate anticlockwise under the action of the spring force of the closing spring until the pin bearing contacts the closing brake and keeps balance, and at the moment, the energy storage is completed; when the switch-on is needed, the switch-on pawl is lifted upwards, the switch-on pawl is separated from the bearing with the pin, so that the cam is out of balance and rotates anticlockwise under the action of the switch-on spring, at the moment, the movable tongue and the clutch groove are in inclined surface contact, the external gear extrudes the movable tongue when the transmission disc rotates, and the external gear does not limit the rotation of the transmission disc, so that the switch-on action is completed.
2. The intelligent circuit breaker modular operating mechanism of claim 1, wherein: the manual closing interlocking module further comprises a closing and opening indication, wherein the middle section of the closing and opening indication is rotationally connected to the mechanism mounting plate, the left end of the closing and opening indication is rotationally connected to the interlocking plate, and a tension spring is arranged between the right end of the closing and opening indication and the mechanism mounting plate; when the brake is opened, the main shaft interlocking crank arm is lifted upwards, the main shaft interlocking crank arm pushes the interlocking plate to be kept at the uppermost position, at the moment, the left end of the brake closing and opening indication is lifted, the tension spring is in a stretching state, and the brake closing and opening indication shows a brake opening state; when the main shaft interlocking crank arm rotates downwards during closing, the tension spring contracts, the closing and opening indication rotates downwards, meanwhile the interlocking plate slides downwards, the right end of the closing and opening indication is lifted at the moment, the tension spring is in a contracted state, and the closing and opening indication displays a closing state.
3. The intelligent circuit breaker modular operating mechanism of claim 2, wherein: the switching-on linkage piece comprises a manual switching-on rod, a switching-on crank arm and a switching-on pull plate, wherein the manual switching-on rod is arranged on the mechanism mounting plate in a sliding manner, the switching-on crank arm is arranged on the mechanism mounting plate in a rotating manner, and the switching-on pull plate is arranged on the mechanism mounting plate in a movable manner; when the switch-on is performed, the manual switch-on lever moves to the right side, contacts the switch-on crank arm and enables the switch-on crank arm to act, and pulls the switch-on pull plate, so that the switch-on pawl is lifted upwards.
4. The intelligent circuit breaker modular operating mechanism of claim 1, wherein: the clutch gear further comprises a pressure spring, a guide pin and a pressing plate, wherein the pressure spring is arranged between the transmission disc and the movable tongue to force the movable tongue to be ejected outwards, the guide pin is fixedly arranged on the movable tongue, the pressing plate is fixedly arranged on the transmission disc, and the guide pin is arranged on the pressing plate in a sliding manner and used for limiting the telescopic direction of the movable tongue.
5. The intelligent circuit breaker modular operating mechanism of claim 4, wherein: the drive gears include a manual drive gear and an electric drive gear.
6. The intelligent circuit breaker modular operating mechanism of claim 5, wherein: when the distance between the pin bearing and the closing pawl is three degrees, the clutch limiting disc starts to contact the movable tongue.
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| CN114446706B (en) * | 2022-04-06 | 2022-06-17 | 赫兹曼电力（广东）有限公司 | Circuit breaker operating mechanism |
| CN115547712B (en) * | 2022-12-01 | 2023-02-21 | 宁波天安智能电网科技股份有限公司 | Jointly-driven operating mechanism and isolation combined type circuit breaker |
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Application publication date: 20180615 Assignee: Ningbo Tianzhi Electric Technology Co.,Ltd. Assignor: NINGBO TIANAN SMART GRID TECHNOLOGY CO.,LTD. Contract record no.: X2023980053427 Denomination of invention: An intelligent modular operating mechanism for circuit breakers Granted publication date: 20230901 License type: Common License Record date: 20231221 |
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