CN117542678B - Dual-power supply change-over switch device - Google Patents
Dual-power supply change-over switch device Download PDFInfo
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- CN117542678B CN117542678B CN202410025538.1A CN202410025538A CN117542678B CN 117542678 B CN117542678 B CN 117542678B CN 202410025538 A CN202410025538 A CN 202410025538A CN 117542678 B CN117542678 B CN 117542678B
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/64—Protective enclosures, baffle plates, or screens for contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
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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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention relates to a dual power supply changeover switch device, comprising: a control cabinet; the change-over switch is arranged in the control cabinet; the change-over switch comprises a bottom plate, a switch assembly, a switch fixing seat and a change-over assembly, wherein the bottom plate is used for being installed in the control cabinet, the switch assembly is installed on the bottom plate, the switch fixing seat is arranged above the switch assembly and is in buckle connection with the switch assembly, and the change-over assembly is arranged in the switch fixing seat and is in sliding connection with the switch fixing seat for driving and controlling the switch assembly; insulating protection side plates are arranged on the front side and the rear side of the switch assembly; the quick return operating mechanism is arranged above the switch and is used for driving the switch assembly to move up and down along the vertical direction in the switch fixing seat so as to realize the operation of the switch in a pressing and switching mode; the invention has the advantages of reasonable structure, quick resetting function, good protection effect, switching alarm function and good safety and stability.
Description
Technical Field
The invention belongs to the technical field of power transformer control cabinets, and particularly relates to a dual-power supply change-over switch device.
Background
The transformer substation is a place for converting voltage and current and receiving and distributing electric energy in a power system, in a power network, a plurality of users have high requirements on the reliability of power supply, and once power failure accidents occur in some units, great economic loss and even casualties are caused for the units, so that a power transformer control cabinet in the power supply system is provided with two power supply sources, namely a main power source and a standby power source, when the power failure accidents occur in the main power source, the standby power source must be immediately put into recovery power supply, namely the main power source and the auxiliary power source are adopted for supplying power, so that stable and reliable operation of the power source is ensured, and in order to achieve the purpose, the two power sources are required to be manually switched or automatically switched between the main power source and the standby power source through a double-power source switching mechanism, namely the two power sources are controlled to be switched on and off; the currently used change-over switch device mostly adopts a reversing switch consisting of 1 group of moving and static contacts and 3 pairs of moving and static contacts, so that when one power supply fails, the reversing switch is quickly switched to the other power supply to supply power for a load, but the moving and static contacts are arranged in a naked manner when not being in butt joint with the reversing switch, lack of protective measures, are easy to adhere to dust and water vapor, and easily cause poor contact phenomenon when being connected with the moving and static contacts on the reversing switch, and influence the stability and safety of switching; in addition, the prior power transformer control cabinet body has insufficient space, so that a change-over switch device cannot be installed or more electric devices are integrated, the structure is too compact, and the later maintenance and operation are not facilitated; moreover, the clamping part of the locking device of the existing power transformer control cabinet is often shorter, so that slipping is likely to occur, or the locking device is not firmly fixed, and the ideal locking effect is not achieved; therefore, it is necessary to provide a dual power supply change-over switch device with reasonable structure, quick reset function, good protection effect, switching alarm function and good safety and stability.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the dual-power-supply switching device which has the advantages of reasonable structure, quick resetting function, good protection effect, switching alarm function and good safety and stability.
The purpose of the invention is realized in the following way: a dual power switching device comprising:
A control cabinet;
the change-over switch is arranged in the control cabinet; the switch comprises a bottom plate arranged in the control cabinet, a switch assembly arranged on the bottom plate, a switch fixing seat arranged above the switch assembly and connected with the switch assembly in a buckling manner, and a switch assembly arranged in the switch fixing seat and connected in a sliding manner in the switch fixing seat in a plugging manner and used for driving and controlling the switch assembly; the front side and the rear side of the switch assembly are provided with insulating protection side plates;
The quick return operating mechanism is arranged above the switch and is used for driving the switch assembly to move up and down along the vertical direction in the switch fixing seat so as to realize the operation of the switch in a pressing and switching mode.
The switch fixing seat is internally provided with a through hole which penetrates the switch fixing seat from top to bottom, pressure sensitive elements are arranged on two sides of the top of the through hole, U-shaped grooves are formed in two sides of the outside of the switch fixing seat, and clamping tongues are arranged in the U-shaped grooves.
The switching assembly comprises a lower pressing head, a lower pressing column positioned in the through hole is arranged below the lower pressing head, a lower pressing plate used for driving the switch assembly is arranged at the bottom of the lower pressing column, and a spring positioned on the upper end face of the lower pressing plate is arranged outside the lower pressing column.
The switch assembly comprises a supporting frame, electromagnetic shielding plates with triangular structures are arranged on two sides of the supporting frame, two ends of each electromagnetic shielding plate are connected with corresponding insulating protection side plates in an inserting mode, clamping plates are arranged on two sides of the upper portion of the supporting frame and correspond to clamping tongues, and clamping grooves matched with the clamping tongues in a clamping mode are formed in the clamping plates.
The support frame inside both sides all be provided with the opening around, the opening inside be provided with first movable contact frame and second movable contact frame respectively, first movable contact frame and second movable contact frame below all be provided with special-shaped plectrum, special-shaped plectrum bottom all be provided with reset spring, first contact plectrum be located the special-shaped plectrum inside of being connected with first movable contact frame, second contact plectrum be located the special-shaped plectrum inside of being connected with the second movable contact frame, first contact plectrum and second contact plectrum inside all be provided with the extension spring.
The support frame in the front both sides all be provided with the short contact piece of bending of "7" font structure that is the dog-ear, support frame in the back both sides all be provided with the long contact piece of bending of "2" font structure that is the dog-ear and do not have the base, short contact piece and the long contact piece of bending all pass through screw and support frame fixed connection.
The two ends below the first contact shifting piece and the upper part of the short bending contact piece are respectively provided with a contact seat corresponding to each other; and the two ends above the second contact shifting piece and the lower part of the long bending contact piece are respectively provided with a contact seat in one-to-one correspondence.
The quick return operating mechanism comprises a T-shaped plate, a driving wheel is arranged in front of one side of the T-shaped plate, a slotted arm connected with the driving wheel through a pin rod arranged at a non-circle center position of the circumference of the front of the driving wheel is arranged in front of the driving wheel, and a sector gear is arranged at the end part of one end, far away from the driving wheel, of the slotted arm; the novel switch is characterized in that rod sleeve seats are arranged on the upper side and the lower side in front of the other side of the T-shaped plate, an operating rod which is connected in the rod sleeve seats in a sliding mode and is relatively long in one end, close to the switch, is arranged in the rod sleeve seats, and driven teeth which are meshed with the sector gear and used for driving the operating rod to reciprocate up and down towards the direction, close to the switch, are arranged on one side of the operating rod.
The control cabinet is characterized in that a movable cabinet door connected with the control cabinet through a damping telescopic rod is arranged on the front surface of the control cabinet, a lock body is arranged on one side of the front surface of the movable cabinet door, an observation window is arranged below the front surface of the movable cabinet door, a first rotating arm and a second rotating arm are respectively arranged on the upper side and the lower side of the inside of the control cabinet, a locking groove plate is arranged on one side, opposite to the first rotating arm and the second rotating arm, of the inside of the control cabinet, grooves are formed in the front surfaces of the first rotating arm and the second rotating arm, and locking components matched with the locking groove plate are arranged in the grooves; the control cabinet inside bottom be provided with the ventilation board, the ventilation board inside be provided with a plurality of ventilation hole, the inside one side of control cabinet be provided with the alarm.
Square tubes are arranged on two sides of the inside of the first rotating arm, cable slot tubes are arranged on the upper side and the lower side of the inner side of the square tubes, mounting plates are arranged in front of the square tubes and correspond to the cable slot tubes, and three-phase circuit breakers and protection overloads are arranged in front of the mounting plates;
the second rotating arm is internally provided with a fixed plate, and a group of thermometers are arranged outside the fixed plate corresponding to the observation window.
The locking assembly comprises a group of brackets, pinions are arranged on the inner sides of the brackets, driving gears meshed with the pinions and used for driving the pinions are arranged on the upper sides of the pinions, the pinions and the driving gears are connected through shafts, a handle frame used for driving and controlling the driving gears is arranged on the inner sides of the upper sides of the brackets, locking toothed plates meshed with the pinions are arranged on the bottoms of the pinions, and the locking toothed plates are connected through connecting rods.
The invention has the beneficial effects that: the invention relates to a double-power-supply change-over switch device, in use, a group of insulating protective side plates are arranged on the front side and the rear side of a switch assembly, and a group of electromagnetic shielding plates are arranged on the left side and the right side (in actual use, the electromagnetic shielding plates can be replaced by the electromagnetic shielding plates and the arc absorbers, so that electromagnetic interference is effectively reduced, and arc hazard is reduced), the change-over switch is effectively protected through the insulating protective side plates and the electromagnetic shielding plates when in change-over connection, and the phenomenon that contact failure occurs when the contact pulling sheet, the contact sheet and the contact seat which are not started are lack of protective measures, dust and moisture are attached, and the contact failure occurs when the change-over switch device is connected with the contact seat is satisfied, so that the change-over switch device is suitable for use in a circulating way, and the safety and the stability of use are obviously improved; according to the invention, a quick return operating mechanism is adopted, the driving wheel drives the slotting arm to move through the pin rod, and the slotting arm drives the operating rod to move up and down through the sector gear, so that the operation and switching operation of the switch are realized, manual switching is not needed, and an alarm is given through the alarm to remind an operator of paying attention; the invention adopts the open-close structure of the first rotating arm and the second rotating arm, thereby effectively saving the space in the control cabinet and facilitating the installation of a change-over switch device or the integration of more electric devices; in addition, the rotary arm opening-closing structure is adopted, so that the later maintenance and operation are facilitated; the locking assembly is matched and locked with the locking groove plate through the locking toothed plate, the locking toothed plate is not easy to slip, the locking is firm, the clamping is more stable, a better locking effect is achieved, and the safety of the control cabinet is ensured; the invention has the advantages of reasonable structure, quick resetting function, good protection effect, switching alarm function and good safety and stability.
Drawings
Fig. 1 is an overall schematic diagram of a control cabinet of a dual power switching device according to the present invention.
Fig. 2 is a schematic diagram of an open state of a control cabinet of a dual power switching device according to the present invention.
Fig. 3 is a perspective view of fig. 2 in accordance with the present invention.
Fig. 4 is a schematic structural diagram of a locking assembly of a dual power switching device according to the present invention.
Fig. 5 is a schematic structural diagram of a quick return operation mechanism of a dual-power switching device according to the present invention.
Fig. 6 is a schematic structural diagram of a switch of a dual-power switching device according to the present invention.
Fig. 7 is a schematic view of the internal structure of fig. 6 according to the present invention.
Fig. 8 is a schematic structural diagram of a switch fixing seat of a dual-power switching device according to the present invention.
Fig. 9 is a schematic structural diagram of a switching assembly of a dual-power switching device according to the present invention.
Fig. 10 is a schematic structural diagram of a switch assembly of a dual-power switching device according to the present invention.
Fig. 11 is a front view of fig. 10 of the present invention.
Fig. 12 is a rear view of fig. 10 in accordance with the present invention.
Fig. 13 is a circuit diagram of an alarm device of a dual power switching device according to the present invention.
In the figure: 1. the control cabinet 11, the movable cabinet door 12, the lock body 13, the observation window 15, the damping telescopic rod 16, the first rotating arm 61, the square tube 62, the cable duct 63, the mounting plate 64, the three-phase circuit breaker 65, the protection overload 17, the second rotating arm 71, the fixed plate 72, the thermometer 18, the locking groove plate 19, the ventilation plate 101, the ventilation hole 102, the alarm 103, the slot 104, the locking assembly 41, the bracket 42, the pinion 43, the driving gear 44, the shaft 45, the handle frame 46, the locking tooth plate 47, the connecting rod 2, the switch 201, the bottom plate 202, the switch assembly 21, the support frame 22, the electromagnetic shielding plate 23, the clamping plate 24, the clamping groove 25, the opening 26, the first moving contact frame 27, the second moving contact frame 28, the special-shaped pulling plate 29, the reset spring 210, the first contact pulling plate 211, the tension spring 212, the short bending contact plate 213, the contact seat 214, the screw 215, the second contact pulling plate 216, the long bending contact plate 203, the insulation protection side plate 204, the switch fixing seat 401, the through hole 402, the sensitive element 403, the U-shaped groove 404, the clamping tongue 205, the switching assembly 205, the lower pressing head 502, the lower pressing plate 503, the lower pressing plate 33, the driving wheel 33, the quick-return pin 33, the sector gear mechanism 33, the sector gear guide pin 33, the sector gear mechanism, the sector bar 33, the driving lever 33, the lower pressing plate 33, the rotating arm 33, the rotating.
Description of the embodiments
The invention is further described below with reference to the accompanying drawings.
Examples
As shown in fig. 1 to 13, a dual power switching device includes: the control cabinet 1, a change-over switch 2 arranged in the control cabinet 1 and a quick return operation mechanism 3 arranged above the change-over switch 2 and used for driving the change-over switch 2 to perform a switching operation; the switch 2 comprises a bottom plate 201 arranged in the control cabinet 1, a switch assembly 202 arranged on the bottom plate 201, a switch fixing seat 204 arranged above the switch assembly 202 and in snap connection with the switch assembly 202, and a switch assembly 205 arranged in the switch fixing seat 204 and in sliding insertion connection with the switch fixing seat 204 for driving the switch assembly 202; the front side and the rear side of the switch assembly 202 are provided with insulating protection side plates 203; and the quick return operating mechanism 3 is used for driving the switching assembly 205 to move up and down along the vertical direction in the switch fixing seat 204 so as to realize the operation of the switching switch 2 in a pressing switching mode.
The inside of switch fixing base 204 have the through-hole 401 that runs through the setting from top to bottom, through-hole 401 top both sides all be provided with pressure sensitive element 402, the outside both sides of switch fixing base 204 all be provided with U type groove 403, U type groove 403 inside all be provided with latch 404.
The switching assembly 205 comprises a lower pressing head 501, a lower pressing column 502 positioned in the through hole 401 is arranged below the lower pressing head 501, a lower pressing plate 503 used for driving the switch assembly 202 is arranged at the bottom of the lower pressing column 502, and a spring 504 positioned on the upper end face of the lower pressing plate 503 is arranged outside the lower pressing column 502.
The switch assembly 202 comprises a support frame 21, electromagnetic shielding plates 22 with triangular structures are arranged on two sides of the support frame 21, two ends of each electromagnetic shielding plate 22 are inserted into corresponding insulating protection side plates 203, clamping plates 23 are arranged on two sides above the support frame 21 and correspond to clamping tongues 404, and clamping grooves 24 matched with the clamping tongues 404 in a clamping mode are formed in the clamping plates 23.
The support frame 21 inside front and back both sides all be provided with opening 25, opening 25 inside be provided with first movable contact frame 26 and second movable contact frame 27 respectively, first movable contact frame 26 and second movable contact frame 27 below all be provided with special-shaped plectrum 28, special-shaped plectrum 28 bottom all be provided with reset spring 29, first contact plectrum 210 be located the special-shaped plectrum 28 inside of being connected with first movable contact frame 26, second contact plectrum 215 be located the special-shaped plectrum 28 inside of being connected with second movable contact frame 27, first contact plectrum 210 and second contact plectrum 215 inside all be provided with extension spring 211.
The two sides in front of the support frame 21 all be provided with the short contact piece 212 of bending that is "7" font structure of bending angle, the support frame 21 both sides in back all be provided with the long contact piece 216 of bending that is bending angle and does not have the bottom "2" font structure, short contact piece 212 and long contact piece 216 of bending all pass through screw 214 and support frame 21 fixed connection.
The contact seats 213 are arranged at the two ends below the first contact poking piece 210 and above the short bending contact piece 212 in a one-to-one correspondence manner; the two ends above the second contact pulling piece 215 and the lower part of the long bending contact piece 216 are respectively provided with a contact seat 213 which corresponds to each other one by one.
In this embodiment, the working principle of the change-over switch is: ① Initial state: the operating rod of the quick return operating mechanism is in contact with the switching assembly but does not apply force to the switching assembly, at the moment, the first movable contact frame and the second movable contact frame are in a static state, the return spring has an upward force on the special-shaped poking plate, under the action of the return spring, the special-shaped poking plate connected with the first contact poking plate drives the first contact poking plate to move upwards, at the moment, contact seats on two sides of the first contact poking plate are far away from contact seats on the short bending contact plate, and the loop is disconnected; similarly, the special-shaped pulling piece connected with the second contact pulling piece drives the second contact pulling piece to move upwards, at the moment, the contact seats at two sides of the second contact pulling piece are contacted with the contact seats on the long bending contact piece, the loop is connected, at the moment, in a main power supply state, and the reset spring exerts upward elastic force on the special-shaped pulling piece connected with the second contact pulling piece, so that the contact seats at two sides of the second contact pulling piece are in close contact with the contact seats on the long bending contact piece; ② Switching state: when the quick return operating mechanism drives the switching assembly to move downwards in the switch fixing seat through the operating rod, the switching assembly drives the first movable contact frame and the second movable contact frame to move downwards through the lower pressure plate, the first movable contact frame and the second movable contact frame drive corresponding special-shaped poking pieces to move downwards, the special-shaped poking pieces drive the first contact poking pieces to move downwards, at the moment, contact seats on two sides of the first contact poking pieces are contacted with contact seats on the short bending contact pieces, and the circuit is connected to be in a standby power supply state at the moment; likewise, the special-shaped poking piece connected with the second contact poking piece drives the second contact poking piece to move downwards, at the moment, the contact seats at the two sides of the second contact poking piece are far away from the contact seats on the long bending contact piece, and the loop is disconnected; ③ Resetting: when the operating rod of the quick return operating mechanism moves upwards, the operating rod does not apply force to the switching assembly at the moment, the first movable contact frame and the second movable contact frame are driven to reset to an initial state under the action of the reset spring, and then the switching assembly is driven to reset to the initial state through the first movable contact frame and the second movable contact frame, namely the operating rod of the quick return operating mechanism contacts with the switching assembly but does not apply force to the switching assembly, and the first movable contact frame and the second movable contact frame are in a static state;
Notably, are: when the quick return operating mechanism drives the switching assembly to move downwards in the switch fixing seat through the operating rod, the lower pressure head is in contact with the pressure sensitive assembly, namely, when the pressure sensitive element is in contact with pressure, an alarm is used for alarming to remind an operator, and at the moment, the switching assembly is switched from the main circuit to the standby/auxiliary circuit.
The quick return operating mechanism 3 comprises a T-shaped plate 31, a driving wheel 32 is arranged in front of one side of the T-shaped plate 31, a slotted arm 33 connected with the driving wheel 32 through a pin rod 34 arranged at a circumferential non-center position in front of the driving wheel 32 is arranged in front of the driving wheel 32, and a sector gear 35 is arranged at one end part of the slotted arm 33 far away from the driving wheel 32; the upper side and the lower side in front of the T-shaped plate 31 opposite side all be provided with pole cover seat 36, pole cover seat 36 inside be provided with sliding connection in pole cover seat 36 and be close to the longer action bars 37 of one end of change over switch 2, action bars 37 one side be provided with sector gear 35 meshing be used for driving action bars 37 to be close to the driven tooth 38 of change over switch 2 direction reciprocating motion from top to bottom.
In this embodiment, the working principle of the quick return operating mechanism is as follows: the driving wheel drives the slotting arm to reciprocate up and down through the pin rod, and the slotting arm drives the operating rod to reciprocate up and down in the rod sleeve seat through the sector gear and the driven teeth, so that the reciprocating motion of the operating rod in the vertical direction is realized, and the switching assembly is driven to move down in the switch fixing seat through the operating rod, so that the switching operation is performed on the switching switch.
The invention is a kind of dual power supply change-over switch device, in use, the invention sets up a series of insulating protective side plates 203 and a series of electromagnetic shielding plates 22 on both sides around the switch assembly 202 (in actual use, a series of electromagnetic shielding plates can be replaced by electromagnetic shielding plates and arc absorbers, reduce electromagnetic interference and reduce electric arc harm effectively), realize the change-over switch 2 and carry on the effective protection through insulating protective side plates 203 and electromagnetic shielding plates 22 when carrying on the change-over connection, prevent unopened contact plectrum, contact sheet and contact seat 213 from lacking the protective measures, adhere to dust and hydrosphere, cause the phenomenon of contact failure when connecting with contact seat 213, meet the cycle and alternate and switch and adapt to use, raise security and stability used obviously; according to the invention, the quick return operating mechanism 3 is adopted, the driving wheel 32 drives the slotting arm 33 to move through the pin rod 34, the slotting arm 33 drives the operating rod 37 to move up and down through the sector gear 35, so that the operation and switching operation of the switch 2 are realized, manual switching is not needed, and an alarm is given through the alarm 102, so that an operator is reminded; the invention adopts the open-close structure of the first rotating arm 16 and the second rotating arm 17, thereby effectively saving the space in the control cabinet 1 and facilitating the installation of a change-over switch device or the integration of more electric devices; in addition, the rotary arm opening-closing structure is adopted, so that the later maintenance and operation are facilitated; the locking assembly 104 is matched and locked with the locking groove plate 18 through the locking toothed plate 46, so that the locking toothed plate 46 is not easy to slip, is fixed firmly, is clamped more stably, achieves a better locking effect, and ensures the safety of the control cabinet 1; the invention has the advantages of reasonable structure, quick resetting function, good protection effect, switching alarm function and good safety and stability.
Examples
As shown in fig. 1 to 13, a dual power switching device includes: the control cabinet 1, a change-over switch 2 arranged in the control cabinet 1 and a quick return operation mechanism 3 arranged above the change-over switch 2 and used for driving the change-over switch 2 to perform a switching operation; the switch 2 comprises a bottom plate 201 arranged in the control cabinet 1, a switch assembly 202 arranged on the bottom plate 201, a switch fixing seat 204 arranged above the switch assembly 202 and in snap connection with the switch assembly 202, and a switch assembly 205 arranged in the switch fixing seat 204 and in sliding insertion connection with the switch fixing seat 204 for driving the switch assembly 202; the front side and the rear side of the switch assembly 202 are provided with insulating protection side plates 203; and the quick return operating mechanism 3 is used for driving the switching assembly 205 to move up and down along the vertical direction in the switch fixing seat 204 so as to realize the operation of the switching switch 2 in a pressing switching mode.
The front of the control cabinet 1 is provided with a movable cabinet door 11 connected with the control cabinet 1 through a damping telescopic rod 15, one side in front of the movable cabinet door 11 is provided with a lock body 12, the lower part in front of the movable cabinet door 11 is provided with an observation window 13, the upper side and the lower side of the inside of the control cabinet 1 are respectively provided with a first rotating arm 16 and a second rotating arm 17, one side, opposite to the first rotating arm 16 and the second rotating arm 17, of the inside of the control cabinet 1 is provided with a locking groove plate 18, the front of the first rotating arm 16 and the second rotating arm 17 is provided with a groove 103, and the inside of the groove 103 is provided with a locking component 104 matched with the locking groove plate 18; the control cabinet 1 inside bottom be provided with the ventilation board 19, the ventilation board 19 inside be provided with a plurality of ventilation hole 101, the inside one side of control cabinet 1 be provided with the alarm 102 that pressure sensitive element 402 is connected.
In this embodiment, the working principle of the alarm is: the alarm circuit shown in fig. 13, wherein QM is a pressure sensitive element, HA is an alarm, and the resistances of two ends of A, B are very large at ordinary times, and the circuit is in a static state; when the quick return operating mechanism drives the switching assembly to move downwards in the switch fixing seat through the operating rod, the lower pressure head is in contact with the pressure sensitive assembly, namely when the pressure sensitive element is in contact with pressure, the resistance at two ends of A, B is rapidly reduced, the potential at the point B is increased and charges C2, when the potential of the positive electrode of C2 reaches the VT conduction potential, VT is conducted, the IC obtains electricity and alarms through the alarm to remind an operator, and at the moment, the switching switch is switched from the main circuit to the auxiliary circuit; when the lower pressure head is not contacted with the pressure sensitive component, namely the pressure sensitive component is not contacted with pressure, the circuit can be automatically reset.
Square tubes 61 are arranged on two sides of the inside of the first rotating arm 16, cable slot tubes 62 are arranged on the upper and lower sides of the inner side of the square tubes 61, mounting plates 63 are arranged in front of the square tubes 61 corresponding to the cable slot tubes 62, and three-phase circuit breakers 64 and protection overloads 65 are arranged in front of the mounting plates 63;
the second rotating arm 17 is internally provided with a fixed plate 71, and a group of thermometers 72 are arranged outside the fixed plate 71 corresponding to the observation window 13.
The locking assembly 104 comprises a group of brackets 41, pinions 42 are arranged on the inner sides of the brackets 41, driving gears 43 meshed with the pinions 42 and used for driving the pinions 42 are arranged above the pinions 42, the pinions 42 and the driving gears 43 are connected through shafts 44, a handle frame 45 used for driving and controlling the driving gears 43 is arranged on the inner sides of the brackets 41, locking toothed plates 46 meshed with the pinions 42 are arranged at the bottoms of the pinions 42, and the locking toothed plates 46 are connected through connecting rods 47.
In this embodiment, the locking assembly works as follows: when the first rotating arm or the second rotating arm rotates towards the inside of the control cabinet and rotates to the position where the grooves correspond to the locking groove plates, the handle frame is shifted, the handle frame drives the pinion to move through the driving gear, and then the locking tooth plates are driven to move through the pinion, the locking tooth plates enter the inside of the locking groove plates through the grooves, the front faces and the back faces of the locking tooth plates, which are in contact with the locking groove plates, are stressed, and the friction force between the locking tooth plates and the locking groove plates is larger, so that the clamping is more stable, and the safety of the control cabinet is ensured.
The invention is a kind of dual power supply change-over switch device, in use, the invention sets up a series of insulating protective side plates 203 and a series of electromagnetic shielding plates 22 on both sides around the switch assembly 202 (in actual use, a series of electromagnetic shielding plates can be replaced by electromagnetic shielding plates and arc absorbers, reduce electromagnetic interference and reduce electric arc harm effectively), realize the change-over switch 2 and carry on the effective protection through insulating protective side plates 203 and electromagnetic shielding plates 22 when carrying on the change-over connection, prevent unopened contact plectrum, contact sheet and contact seat 213 from lacking the protective measures, adhere to dust and hydrosphere, cause the phenomenon of contact failure when connecting with contact seat 213, meet the cycle and alternate and switch and adapt to use, raise security and stability used obviously; according to the invention, the quick return operating mechanism 3 is adopted, the driving wheel 32 drives the slotting arm 33 to move through the pin rod 34, the slotting arm 33 drives the operating rod 37 to move up and down through the sector gear 35, so that the operation and switching operation of the switch 2 are realized, manual switching is not needed, and an alarm is given through the alarm 102, so that an operator is reminded; the invention adopts the open-close structure of the first rotating arm 16 and the second rotating arm 17, thereby effectively saving the space in the control cabinet 1 and facilitating the installation of a change-over switch device or the integration of more electric devices; in addition, the rotary arm opening-closing structure is adopted, so that the later maintenance and operation are facilitated; the locking assembly 104 is matched and locked with the locking groove plate 18 through the locking toothed plate 46, so that the locking toothed plate 46 is not easy to slip, is fixed firmly, is clamped more stably, achieves a better locking effect, and ensures the safety of the control cabinet 1; the invention has the advantages of reasonable structure, quick resetting function, good protection effect, switching alarm function and good safety and stability.
Claims (7)
1. A dual power switching device, characterized by: comprising the following steps:
A control cabinet;
the change-over switch is arranged in the control cabinet; the switch comprises a bottom plate arranged in the control cabinet, a switch assembly arranged on the bottom plate, a switch fixing seat arranged above the switch assembly and connected with the switch assembly in a buckling manner, and a switch assembly arranged in the switch fixing seat and connected in a sliding manner in the switch fixing seat in a plugging manner and used for driving and controlling the switch assembly; the front side and the rear side of the switch assembly are provided with insulating protection side plates;
the quick return operating mechanism is arranged above the switch and is used for driving the switch assembly to move up and down along the vertical direction in the switch fixing seat so as to realize the operation of the switch in a pressing and switching mode;
The control cabinet is characterized in that a movable cabinet door connected with the control cabinet through a damping telescopic rod is arranged on the front surface of the control cabinet, a lock body is arranged on one side of the front surface of the movable cabinet door, an observation window is arranged below the front surface of the movable cabinet door, a first rotating arm and a second rotating arm are respectively arranged on the upper side and the lower side of the inside of the control cabinet, a locking groove plate is arranged on one side, opposite to the first rotating arm and the second rotating arm, of the inside of the control cabinet, grooves are formed in the front surfaces of the first rotating arm and the second rotating arm, and locking components matched with the locking groove plate are arranged in the grooves; the bottom of the control cabinet is provided with a ventilating plate, a plurality of ventilating holes are formed in the ventilating plate, and an alarm is arranged on one side of the control cabinet;
square tubes are arranged on two sides of the inside of the first rotating arm, cable slot tubes are arranged on the upper side and the lower side of the inner side of the square tubes, mounting plates are arranged in front of the square tubes and correspond to the cable slot tubes, and three-phase circuit breakers and protection overloads are arranged in front of the mounting plates;
a fixed plate is arranged in the second rotating arm, and a group of thermometers are arranged outside the fixed plate corresponding to the observation window;
The quick return operating mechanism comprises a T-shaped plate, a driving wheel is arranged in front of one side of the T-shaped plate, a slotted arm connected with the driving wheel through a pin rod arranged at a non-circle center position of the circumference of the front of the driving wheel is arranged in front of the driving wheel, and a sector gear is arranged at the end part of one end, far away from the driving wheel, of the slotted arm; the novel switch is characterized in that rod sleeve seats are arranged on the upper side and the lower side in front of the other side of the T-shaped plate, an operating rod which is connected in the rod sleeve seats in a sliding mode and is relatively long in one end, close to the switch, is arranged in the rod sleeve seats, and driven teeth which are meshed with the sector gear and used for driving the operating rod to reciprocate up and down towards the direction, close to the switch, are arranged on one side of the operating rod.
2. A dual power switching device as defined in claim 1, wherein: the switch fixing seat is internally provided with a through hole which penetrates the switch fixing seat from top to bottom, pressure sensitive elements are arranged on two sides of the top of the through hole, U-shaped grooves are formed in two sides of the outside of the switch fixing seat, and clamping tongues are arranged in the U-shaped grooves.
3. A dual power switching device as defined in claim 2, wherein: the switching assembly comprises a lower pressing head, a lower pressing column positioned in the through hole is arranged below the lower pressing head, a lower pressing plate used for driving the switch assembly is arranged at the bottom of the lower pressing column, and a spring positioned on the upper end face of the lower pressing plate is arranged outside the lower pressing column.
4. A dual power switching device as claimed in claim 3, wherein: the switch assembly comprises a supporting frame, electromagnetic shielding plates with triangular structures are arranged on two sides of the supporting frame, two ends of each electromagnetic shielding plate are connected with corresponding insulating protection side plates in an inserting mode, clamping plates are arranged on two sides of the upper portion of the supporting frame and correspond to clamping tongues, and clamping grooves matched with the clamping tongues in a clamping mode are formed in the clamping plates.
5. A dual power switching device as defined in claim 4, wherein: the support frame inside both sides all be provided with the opening around, the opening inside be provided with first movable contact frame and second movable contact frame respectively, first movable contact frame and second movable contact frame below all be provided with special-shaped plectrum, special-shaped plectrum bottom all be provided with reset spring, first contact plectrum is located the special-shaped plectrum inside of being connected with first movable contact frame, second contact plectrum is located the special-shaped plectrum inside of being connected with the second movable contact frame, first contact plectrum and second contact plectrum inside all be provided with the extension spring.
6. A dual power switching device as defined in claim 5, wherein: the two sides of the front surface of the support frame are respectively provided with a short bending contact piece with a 7-shaped structure in a bending angle, the two sides of the rear surface of the support frame are respectively provided with a long bending contact piece with a 2-shaped structure in a bending angle and without a bottom edge, and the short bending contact pieces and the long bending contact pieces are fixedly connected with the support frame through screws; the two ends below the first contact shifting piece and the upper part of the short bending contact piece are respectively provided with a contact seat corresponding to each other; and the two ends above the second contact shifting piece and the lower part of the long bending contact piece are respectively provided with a contact seat in one-to-one correspondence.
7. A dual power switching device as defined in claim 1, wherein: the locking assembly comprises a group of brackets, pinions are arranged on the inner sides of the brackets, driving gears meshed with the pinions and used for driving the pinions are arranged on the upper sides of the pinions, the pinions and the driving gears are connected through shafts, a handle frame used for driving and controlling the driving gears is arranged on the inner sides of the upper sides of the brackets, locking toothed plates meshed with the pinions are arranged on the bottoms of the pinions, and the locking toothed plates are connected through connecting rods.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410025538.1A CN117542678B (en) | 2024-01-08 | 2024-01-08 | Dual-power supply change-over switch device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410025538.1A CN117542678B (en) | 2024-01-08 | 2024-01-08 | Dual-power supply change-over switch device |
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| CN117542678A CN117542678A (en) | 2024-02-09 |
| CN117542678B true CN117542678B (en) | 2024-05-03 |
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| CN202410025538.1A Active CN117542678B (en) | 2024-01-08 | 2024-01-08 | Dual-power supply change-over switch device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118399573A (en) * | 2024-03-13 | 2024-07-26 | 国网安徽省电力有限公司芜湖市湾沚区供电公司 | Intelligent electricity protection device based on zero time switching control |
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