CN104319164A - Vacuum load switch - Google Patents
Vacuum load switch Download PDFInfo
- Publication number
- CN104319164A CN104319164A CN201410615129.3A CN201410615129A CN104319164A CN 104319164 A CN104319164 A CN 104319164A CN 201410615129 A CN201410615129 A CN 201410615129A CN 104319164 A CN104319164 A CN 104319164A
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- China
- Prior art keywords
- switch
- main shaft
- vacuum
- isolating switch
- supporting bracket
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
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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
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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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
- H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
- H01H2009/065—Battery operated hand tools in which the battery and the switch are directly connected
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a vacuum load switch and belongs to the technical field of high-voltage electrical equipment manufacturing. The vacuum load switch comprises a vacuum switch unit, an isolating switch unit, an earthing switch unit and an operating mechanism. The isolating switch unit, the vacuum switch unit and the earthing switch unit are sequentially and longitudinally arranged on a vacuum load switch rack, the isolating switch unit and the earthing switch unit are connected in a linkage mode through a link mechanism, and interlocking braking is achieved among the operating mechanism, the isolating switch unit and the earthing switch unit, wherein the operating mechanism is arranged on a partition plate on one side edge of the rack. The vacuum load switch is simple in structure and provided with an earthing switch-isolating switch integrated linkage mechanism, and therefore the vacuum load switch is small in size and convenient to install and maintain; besides, interlocking braking is achieved between a limiting assembly on the operating mechanism and the linkage mechanism, so that operation is flexible, and the failure rate is low.
Description
Technical field
The present invention relates to high-voltage electrical equipment manufacturing technology field, especially a kind of vacuum load switch.
Background technology
Vacuum load switch is applicable to the distribution systems such as industrial and mining enterprises, skyscraper, residential quarters, school and box-type substation, and structure is comparatively complicated.The general all volume ratios of conventional vacuum load switch are comparatively large, and cause power distribution cabinet excessively to take up room, and have complicated operating mechanism, operating personnel need to operate separately vacuum switch, isolating switch, earthed switch, or even operation cabinet door lock is fixed separately.Such complex operation, if operating personnel operate unskilled meeting cause operate miss, malfunction, installation and maintenance workload is large, and equipment failure rate is high.Patent No. CN201010196486.2 discloses a kind of vacuum load switch without isolating switch, in use there is potential safety hazard, if additionally install isolating switch additional, then complicated and operating mechanism control switch is installed and increases, further increase maintenance workload.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, a kind of integrative-structure is provided and is easy to install, safeguard, and there is the vacuum load switch of interlocked brake characteristic.
Technical scheme of the present invention is to provide a kind of vacuum load switch, it is characterized in that, comprises vacuum switch unit, Disconnecting switch unit, earthed switch unit and operating mechanism; Described Disconnecting switch unit, described vacuum switch unit and described earthed switch unit are longitudinally arranged in vacuum load switch frame successively, described Disconnecting switch unit and described earthed switch unit are realized being connected by linkage, are arranged on the described operating mechanism on the dividing plate of described frame side and realize interlocked brake between described Disconnecting switch unit and described earthed switch unit three.
This vacuum load switch has Disconnecting switch unit-earthed switch unit one link gear, makes vacuum load switch volume little, is convenient to installation, maintenance, safeguards; And there is the operating mechanism of interlocked brake effect, make when operating personnel operate operating mechanism, isolating switch disconnects (or closed), and earthed switch closed (or disconnection), cabinet door unlocks or locking.
As preferably of the present invention, described Disconnecting switch unit comprises isolating switch main shaft, the first insulated tension pole, isolating switch, the first insulated column; Described first insulated column to be fixed in frame and to be flexibly connected with described isolating switch, and described isolating switch is connected by described first insulated tension pole and described isolating switch main shaft.
As preferably of the present invention, described vacuum switch unit comprises upper connecting terminal, pole, vacuum packet, vacuum switch main shaft, the second insulated tension pole, connecting lever, insulated support, insulating knockout pin, release, fuse base, fuse, sealing insulating barrier, lower connecting terminal; Described vacuum switch unit connects described isolating switch by described upper connecting terminal, described upper connecting terminal connects insulated tension pole described in the vacuum packet and second that is located in described pole successively, described vacuum packet and described second insulated tension pole and all connect in shake-up mode between described second insulated tension pole and described connecting lever, described connecting lever and described vacuum switch main shaft are connected; Described fuse is carried in described fuse base, one end is connected between described vacuum packet and described second insulated tension pole by described sealing insulating barrier, and the other end connects the described insulated support being built in described pole and the described insulating knockout pin be connected with described pole respectively by described release.
As preferably of the present invention, described earthed switch unit comprises earthing, grounding switch main shaft, the second insulated column; Described grounding switch main shaft and described isolating switch main shaft are connected by described linkage.
As preferably of the present invention, described linkage comprises the second linkage board, portable plate, stock, the 3rd linkage board, four-axle linkage plate; Described linkage is arranged in described frame along y direction, described second linkage board and described isolating switch main shaft are connected, and connecting described portable plate, described stock, described 3rd linkage board, described four-axle linkage plate according to this, described four-axle linkage plate and described grounding switch main shaft are connected.
As preferably of the present invention, described operating mechanism comprises and isolating switch and the earthed switch one limit assembly of interlocked brake, switch lever, separating brake handle, energy accumulation handle and energy-stored spring.
As preferably of the present invention, described limit assembly comprises operation hand lever action component, the first rotatable parts and the first limiting plate; Described operation hand lever action component and described isolating switch main shaft are connected; Described first rotatable parts one end is fixedly connected with described isolating switch main shaft, and the other end is flexibly connected with described first limiting plate be arranged on described dividing plate.
As preferably of the present invention, described operational motion parts comprise the first supporting bracket and round bar; Described round bar and isolating switch main shaft are coaxially arranged, elastomeric element is provided with along the axis direction of described isolating switch main shaft between described round bar and described isolating switch main shaft, be provided with the first activity bar by described elastomeric element effect in described round bar, the avris of described round bar offers loose slot in order to hold described first activity bar; Become chute to coordinate between described first supporting bracket and described dividing plate, and described first supporting bracket is arranged on the side of described round bar, described first supporting bracket and described first activity bar realize dynamic cooperation.
As preferably of the present invention, described limit assembly also comprises the second rotatable parts; Described operational motion parts comprise the first supporting bracket, round bar and the second supporting bracket; Described round bar and isolating switch main shaft are coaxially arranged, elastomeric element is provided with along the axis direction of described isolating switch main shaft between described round bar and described isolating switch main shaft, be provided with the first activity bar by described elastomeric element effect in described round bar, the avris of described round bar offers loose slot in order to hold described first activity bar; Become chute to coordinate between described first supporting bracket and described dividing plate, and described first supporting bracket is arranged on the side of described round bar, described first supporting bracket and described first activity bar realize dynamic cooperation; One end of described second rotatable parts is connected with described switch lever and separating brake handle respectively, and the other end and described second supporting bracket of described second rotatable parts are connected; Become chute to coordinate between described second supporting bracket and described dividing plate, and described second supporting bracket is arranged on the opposite side of described round bar, described second supporting bracket and described first activity bar realize dynamic cooperation.
As preferably of the present invention, described limit assembly also comprises the 3rd rotatable parts, described 3rd rotatable parts comprise the fixed part be fixedly installed on described isolating switch main shaft, and described fixed part is connected with the big spring be fixed in described frame by the first linkage board; Described fixed part is the endless member with opening, described endless member be circumferentially provided with the first extension block and the second extension block, the distance of described first extension block and described second extension block circumferencial direction is described operational motion component actuation distance.
The present invention has following beneficial effect:
Vacuum load switch structure of the present invention is simple, has earthed switch-isolating switch and is integrated link gear, make this vacuum load switch volume little, be convenient to installation and maintenance, and the limit assembly on operating mechanism and described link gear interlocked brake, flexible operation, failure rate is low.
Accompanying drawing explanation
Fig. 1 is the structure chart of vacuum load switch of the present invention;
Fig. 2 is the topology view in A direction in Fig. 1;
Fig. 3 is the local structural graph of the limit assembly in the vacuum load switch Central Shanxi Plain of the present invention.
In figure, 1-frame; 2-dividing plate; 3-vacuum switch unit; 31-vacuum switch main shaft; 32a-upper connecting terminal; 32b-lower connecting terminal; 33-pole; 34-vacuum packet; 35-second insulated tension pole; 36-connecting lever; 37-insulated support; 38-insulating knockout pin; 39-fuse; 391-fuse base; 392-sealing insulating barrier; 393-release; 4-Disconnecting switch unit; 41-isolating switch main shaft; 42-first insulated tension pole; 43-isolating switch; 44-first insulated column; 5-earthed switch unit; 51-grounding switch main shaft; 52-earthing; 53-second insulated column; 6-linkage; 61-second linkage board; 62-portable plate; 63-stock; 64-the 3rd linkage board; 65-four-axle linkage plate; Fixed part on 66-linkage; 7-operating mechanism; 71-limit assembly; 711-operational motion parts; 7111-round bar; 71111-elastomeric element; 71112-first activity bar; 7112-first supporting bracket; 7112a-first lock part; 7112b-second lock part; 7113-second supporting bracket; The movable circumference plate of 7115-; 712-first limiting plate; 7121-coupling part; 7122-buckle; 713-first rotatable parts; 714-second rotatable parts; 715-the 3rd rotatable parts; 7151-big spring; 72-energy accumulation handle; 73-switch lever; 74-separating brake handle; 8-guidance panel.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1,2 shows the structural representation of vacuum load switch of the present invention.This vacuum load switch is for comprising the switch cubicle of cabinet, cabinet door, dividing plate 2.This vacuum load switch comprises vacuum switch unit, Disconnecting switch unit, earthed switch unit and operating mechanism.Described Disconnecting switch unit, described vacuum switch unit and described earthed switch unit are longitudinally arranged in the frame 1 of vacuum load switch successively, described Disconnecting switch unit and described vacuum switch unit are connected by linkage, and described linkage and described operating mechanism are separately positioned on the left and right avris of described frame 1.Such layout makes vacuum load switch integrally be arranged in same frame 1, and volume is little, convenient operation personnel installation, maintenance, maintenance.
Described Disconnecting switch unit, described vacuum switch unit and described earthed switch unit are electrically connected successively, when vacuum load switch operates, carry out cut-offfing short circuit current and reclosing work.Described Disconnecting switch unit comprises isolating switch main shaft 41, first insulated tension pole 42, isolating switch 43, first insulated column 44.Described vacuum switch unit comprises upper connecting terminal 32a, pole 33, vacuum packet 34, vacuum switch main shaft 31, second insulated tension pole 35, connecting lever 36, insulated support 37, insulating knockout pin 38, release 393, fuse base 391, fuse 39, sealing insulating barrier 392, lower connecting terminal 32b.Described earthed switch unit comprises earthing 52, grounding switch main shaft 51, second insulated column 53.Described first insulated column 44 to be fixed in frame 1 and to be flexibly connected with described isolating switch 43, and described isolating switch 43 is connected with described isolating switch main shaft 41 by described first insulated tension pole 42; Described first insulated tension pole 42 coordinates with described isolating switch 43 and described isolating switch main shaft 41 one-tenth angles respectively, and when isolating switch main shaft 41 rotates, described first insulated tension pole 42 is subject to interlock power and is outwards thrown off by isolating switch 43 or inwardly close.Described isolating switch 43 connects described isolating switch 43 by upper connecting terminal 32a, described upper connecting terminal 32a connects successively and is located at vacuum packet 34 in described pole 33 and described second insulated tension pole 35, described vacuum packet 34 and described second insulated tension pole 35 and all connect in shake-up mode between described second insulated tension pole 35 and described connecting lever 36, described connecting lever 36 is connected with described vacuum switch main shaft 31; Described fuse 39 is carried in described fuse base 391, one end is connected between described vacuum packet 34 and described second insulated tension pole 35 by described sealing insulating barrier 392, and the other end connects the described insulated support 37 being built in described pole 33 and the described insulating knockout pin 38 be connected with described pole 33 respectively by described release 393.When rotation vacuum switch spindle 32 is with closed vacuum switch, revolving force is passed to the contact in described second insulated tension pole 35 by described vacuum switch main shaft 32 through connecting lever 36, and on its contact, top makes the contact in vacuum packet 34 connect, and now vacuum switch closes.After completing isolating switch 43, vacuum switch closed procedure successively, the current-carrying part-fuse 39-lower connecting terminal 32b in isolating switch 43-upper connecting terminal 32a-vacuum packet 34-sealing insulating barrier 392 forms current path.When a failure occurs it, fuse 39 is thrown off by de-mouthpart and disconnects, and disconnects vacuum switch arc extinguishing successively, disconnects isolating switch 43.Wherein earthed switch disconnection, closed with isolating switch 43 closed, disconnect and realizing.
In order to improve flexibility and the fail safe of operation, the link gear of one isolating switch 43-earthed switch is set.The interlock of isolating switch 43 and earthed switch is realized by linkage, solves the problem of isolating switch 43 and earthed switch separate operation in prior art.This linkage comprises the second linkage board 61, portable plate 62, stock 63, the 3rd linkage board 64, four-axle linkage plate 65.Described linkage is arranged on the side of described frame 1 along y direction, and described second linkage board 61 one end is socketed in outside described isolating switch main shaft 41, rotates and action with described isolating switch main shaft 41; The other end of described second linkage board 61 and one end of described portable plate 62 are flexibly connected, and both moving fulcrums are fixed in described frame 1; The other end of described portable plate 62 is flexibly connected with one end of stock 63; Described stock 63 is long, when isolating switch main shaft 41-linkage 6-grounding switch main shaft 51 three links be exempt from stock 63 depart from y direction make the power of transmission deflect or transmit power diminish, and then make when disconnecting isolating switch 43, earthed switch cannot on normal occlusion, then need to arrange fixed part 66 at stock 63 local location, make stock 63 keep arranging along the y direction of described frame 1; The other end of described stock 63 is connected with one end of described 3rd linkage board 64, and described 3rd linkage board 64 other end is flexibly connected with one end of described four-axle linkage plate 65; Described four-axle linkage plate 65 one end is socketed in outside described grounding switch main shaft 51.Wherein, described second linkage board 61 is connected with described portable plate 62 one-tenth angle, and described 3rd linkage board 64 is connected with described four-axle linkage plate 65 one-tenth angles.When isolating switch main shaft 41 is rotated counterclockwise, isolating switch 43 disconnects, the revolving force of isolating switch main shaft 41 drives described linkage action, transmit revolving force by the second linkage board 61, portable plate 62, stock 63, the 3rd linkage board 64, four-axle linkage plate 65 successively, make described four-axle linkage plate 65 drive grounding switch main shaft 51 to rotate and the earthed switch that closes; When isolating switch main shaft 41 turns clockwise, isolating switch 43 closes, and the revolving force drivening rod mechanism counteragent of isolating switch main shaft 41 drives grounding switch main shaft 51 reverse rotation and disconnects earthed switch.
Described operating mechanism is arranged on the dividing plate 2 of frame 1 side, and it comprises the limit assembly of the energy accumulation handle 72 of vacuum switch, separating brake handle 74, switch lever 73, separating brake indicating device, combined floodgate indicating device, energy-stored spring and energy storage instruction and isolating switch 43-earthed switch-cabinet door one interlocked brake.This limit assembly is under energy accumulation handle 72, separating brake handle 74 and switch lever 73 interoperation, described isolating switch 43 and earthed switch link gear then interlocked brake, with realize isolating switch 43 close a floodgate while grounding switch tripping and switch cubicle locking, and while isolating switch 43 separating brake earthed switch close a floodgate and switch cubicle open.
As Fig. 1,3, described limit assembly comprises operational motion parts 711, first rotatable parts 713 and the first limiting plate 712.Described operational motion parts 711 run through on the dividing plate 2 that is arranged between cabinet and cabinet door, described operational motion parts 711 are connected with described isolating switch main shaft 41, described first rotatable parts 713 one end is fixedly connected with described isolating switch main shaft 41, to rotate with described isolating switch main shaft 41, and the other end of described first rotatable parts 713 is flexibly connected with described first limiting plate 712 be located on dividing plate 2.Described operational motion parts 711 comprise the first supporting bracket 7112 and round bar 7111.Described round bar 7111 is coaxially arranged on outside described isolating switch main shaft 41 with described isolating switch main shaft 41, is provided with elastomeric element 71111 between.Also be provided with the first activity bar 71112 in described round bar 7111, the avris of described round bar 7111 is provided with loose slot, in order to hold described first activity bar 71112.Chute is become to coordinate between described first supporting bracket 7112 and dividing plate 2, as as described in the first supporting bracket 7112 chute moving direction be as described in dividing plate 2 moves horizontally direction, described first supporting bracket 7112 and described operational motion parts 711 are near setting, when cabinet door is opened, described first activity bar 71112 is just blocked to prevent described first activity bar 71112 from moving by described first supporting bracket 7112.When cabinet door closes, closed first supporting bracket 7112 that makes of cabinet door moves horizontally, then the first supporting bracket 7112 no longer blocks described first activity bar 71112, now can apply cross force to the elastomeric element 71111 in described operational motion parts, described first activity bar 71112 moves along the loose slot of described round bar 7111, apply revolving force to isolating switch main shaft 41 again, then closed, the earthed switch of isolating switch disconnects.The cooperation of said structure is guaranteed the fail safe operated to prevent misoperation.
Described limit assembly also comprises the second rotatable parts 714.Described second rotatable parts 714 one end and described switch lever 73 and described separating brake handle 74 are connected, the other end and described second supporting bracket 7113 of described second rotatable parts 714 are connected, after utilizing energy accumulation handle 72 to complete energy storage, switch lever 73 action, makes described second rotatable parts 714 drive described second supporting bracket 7113 to move along the movable circumference plate 7115 be arranged on described dividing plate 2.Chute is become to coordinate between the same and described dividing plate 2 of described second supporting bracket 7113, as as described in the second supporting bracket 7113 chute moving direction be as described in vertical direction on dividing plate 2 move, described first activity bar 71112 is just blocked to prevent described first activity bar 71112 from moving by described second supporting bracket 7113, and cabinet door is locked simultaneously.When described separating brake handle action, described second rotatable parts 714 drive described second supporting bracket 7113 to move along described movable circumference plate 7115 with above-mentioned rightabout, and described first activity bar 71112 is no longer blocked by described second supporting bracket 7113.When the elastomeric element 71111 in described operational motion parts is subject to cross force, described first activity bar 71112 moves along the loose slot of described round bar 7111, then applies revolving force to isolating switch main shaft 41, then isolating switch disconnects, and earthed switch closes.
Wherein, described first supporting bracket 7112 comprises the first lock part 7112a and the second lock part 7112b, the first spring is connected with between described first lock part 7112a and the second lock part 7112b, this first supporting bracket 7112 coordinates with cabinet door, when cabinet door closes, described first lock part 7112 coordinates with the blade type head of cabinet door and realizes with cabinet door lock fixed, and described first supporting bracket 7112 horizontal direction on dividing plate 2 moves simultaneously, makes described second lock part 7112b no longer block the first activity bar 71112; When cabinet door is opened, utilize spring Rapid reset, make the first lock part 7112b block the first activity bar 71112.
In addition, described limit assembly also can comprise the 3rd rotatable parts.Described 3rd rotatable parts comprise fixed part, it to be fixedly installed on described isolating switch main shaft 41 and together to rotate with described isolating switch main shaft 41, described frame 1 there is a big spring 7151, described big spring 7151 is connected by the first linkage board with described fixed part, when the 3rd rotatable parts rotate, stretched by the first linkage board or compression big spring 7151, big spring 7151 saves as the energy of next operation, when the manual operation of compounding practice bar, the closed or disconnection between disconnecting link effectively can be completed more fast.Wherein, described fixed part is the endless member with opening, described endless member be circumferentially provided with the first extension block and the second extension block, the distance of described first extension block and described second extension block circumferencial direction is described operational motion parts 711 operating distance, namely isolating switch main shaft 41 rotates between described first extension block and described second extension block, and two-end-point is respectively the state point that isolating switch 43 closes or isolating switch 43 disconnects.
First rotatable parts 713 described in such scheme are all one with described isolating switch main shaft 41 with the parts rotated, and its one end is bolted on described isolating switch main shaft 41, rotates with described isolating switch main shaft 41; The other end is flexibly connected with described first limiting plate 712 by connecting rod or band hook part.Described first limiting plate 712 can comprise coupling part 7121 and buckle 7122, described first limiting plate 712 coordinates with same chute between described dividing plate 2, make buckle 7122 extreme lower position of described first limiting plate 712 just concordant with guidance panel 8 peak, this guidance panel 8, for being arranged on the metal decking on dividing plate, which is provided with the first supporting bracket 7112, second supporting bracket 7113 and round bar 7111.The coupling part 7121 of described first limiting plate 712 is flexibly connected with described first rotatable parts 713 by the second spring, namely when described isolating switch main shaft 41 rotates, described first rotatable parts 713 rotate, connecting rod or the band hook part of described first rotatable parts 713 affect described second spring generation deformation, move along its chute to make described first limiting plate 712.
In order to improve processing safety, needing, many places cabinet door lock is set fixed.This vacuum load switch is arranged in switch cubicle, when needing to be serviced, service work time, the on-off switch that first operating personnel operate vacuum switch disconnects vacuum switch, and next utilizes action bars operation action component 711.When isolating switch 43 closes and the initial condition of earthed switch disconnection, door of switch cabinet closes, first supporting bracket 7112 and the second supporting bracket 7113 are divided into described round bar 7111 both sides, described first supporting bracket 7112 is in the left side of its chute, and described first supporting bracket 7112 utilizes its first lock part 7112a and cabinet door lock to live; Described second supporting bracket 7113 is in the bottom side of its chute, and described first activity bar 71112 is blocked by described second supporting bracket 7113; Described first limiting plate 712 is on the top of its chute, and namely buckle 7122 exceeds described dividing plate 2, and the part fits on buckle and cabinet door realizes locking further.After opening separating brake handle 74, second rotatable parts 714 drive the second supporting bracket 7113 to rotate counterclockwise the top side causing it to move to its chute, the second supporting bracket 7113 is made no longer to block the first activity bar 71112, utilize action bars to insert in round bar 7111, apply horizontal force and to the first activity bar 71112, its loose slot along round bar 7111 is moved.When action bars is rotated counterclockwise, described isolating switch main shaft 41 is rotated counterclockwise and disconnects isolating switch 43 and the closed earthed switch be connected by linkage on the one hand; Utilize the first rotatable parts 713 to draw described first limiting plate 712 by spring on the one hand to move along its chute end direction, the buckle 7112 of described first limiting plate 712 moves to dividing plate 2 peak and stops, and can remove the lock-out state of the first limiting plate 712 and cabinet door; Utilizing the 3rd rotatable parts 715 by the first linkage board stretching big spring 7151 on the one hand, storing enough energy for closing isolating switch 43-disconnection earthed switch next time.When after taking-up action bars, described isolating switch main shaft 41 is fixed on postrotational position, cabinet door can be opened, because the blade type head on cabinet door is by relativity shift Position Control with coordinating of the first lock part 7112a in the first supporting bracket 7112, namely the first lock part 7112 is not just to setting with blade type head, there is relativity shift position between the two, operator opens cabinet behind the door, described first supporting bracket 7112 resets by the first spring action, namely described first supporting bracket 7112 blocks described first activity bar 71112, in order to avoid the misoperation when cabinet door is opened.When needs close isolating switch again, successively closing switch cabinet door, update bar turning clockwise carry out isolating switch closed-earthed switch opening operation, the structure counteragent now linked because of rotation, finally get back to initial condition, the energy storage of recycling energy accumulation handle 72, by switch lever 73, second supporting bracket 7113 is blocked the first activity bar 71112, above-mentioned many places cabinet door lock is fixed, further increases processing safety and extends the plant maintenance cycle.Wherein energy accumulation handle 72 operation makes energy-stored spring energy storage, and to be supplied to switch lever 73 and separating brake handle 74 action, energy storage linked manner is similar or identical with existing switch cubicle operating mechanism; Switch lever 73 and separating brake handle 74 action realize the second rotatable parts 714 clockwise and rotate counterclockwise respectively, and the second rotatable parts 714 drive the second supporting bracket 7113 respectively along its chute and move up downwards then.
Embodiment recited above is only be described the preferred embodiment of the present invention, not limits the spirit and scope of the present invention.Under the prerequisite not departing from design concept of the present invention; the various modification that this area ordinary person makes technical scheme of the present invention and improvement; all should drop into protection scope of the present invention, the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (10)
1. a vacuum load switch, is characterized in that, comprises vacuum switch unit, Disconnecting switch unit, earthed switch unit and operating mechanism; Described Disconnecting switch unit, described vacuum switch unit and described earthed switch unit are longitudinally arranged in the frame (1) of vacuum load switch successively, described Disconnecting switch unit and described earthed switch unit are realized being connected by linkage, are arranged on the described operating mechanism on the dividing plate (2) of described frame (1) side and realize interlocked brake between described Disconnecting switch unit and described earthed switch unit three.
2. vacuum load switch according to claim 1, is characterized in that, described Disconnecting switch unit comprises isolating switch main shaft (41), the first insulated tension pole (42), isolating switch, the first insulated column (44); Described first insulated column (44) is fixed at frame (1) and goes up and be flexibly connected with described isolating switch, and described isolating switch is connected by described first insulated tension pole (42) and described isolating switch main shaft (41).
3. vacuum load switch according to claim 2, it is characterized in that, described vacuum switch unit comprises upper connecting terminal (32a), pole (33), vacuum packet (34), vacuum switch main shaft (32), the second insulated tension pole (35), connecting lever (36), insulated support (37), insulating knockout pin (38), release (393), fuse base (391), fuse (39), sealing insulating barrier (392), lower connecting terminal (32b); Described vacuum switch unit connects described isolating switch (43) by described upper connecting terminal (32a), described upper connecting terminal (32a) connects successively and is located at vacuum packet (34) in described pole (33) and insulated tension pole described in second, described vacuum packet (34) and described second insulated tension pole (35) and all connect in shake-up mode between described second insulated tension pole (35) and described connecting lever (36), described connecting lever (36) and described vacuum switch main shaft (32) are connected; Described fuse (39) is carried in described fuse base (391), one end is connected between described vacuum packet (34) and described second insulated tension pole (35) by described sealing insulating barrier (392), and the other end connects the described insulated support (37) being built in described pole (33) and the described insulating knockout pin (38) be connected with described pole (33) respectively by described release (393).
4. vacuum load switch according to claim 3, is characterized in that, described earthed switch unit comprises earthing (52), grounding switch main shaft (51), the second insulated column (53); Described grounding switch main shaft (51) and described isolating switch main shaft (41) are connected by described linkage.
5. the vacuum load switch according to claim 1 or 2 or 3 or 4, is characterized in that, described linkage comprises the second linkage board (61), portable plate (62), stock (63), the 3rd linkage board (64), four-axle linkage plate (65); Described linkage is arranged in described frame (1) along y direction, described second linkage board (61) and described isolating switch main shaft (41) are connected, and connecting described portable plate (62), described stock (63), described 3rd linkage board (64), described four-axle linkage plate (65) according to this, described four-axle linkage plate (65) and described grounding switch main shaft (51) are connected.
6. vacuum load switch according to claim 1, it is characterized in that, described operating mechanism comprises and isolating switch and the earthed switch one limit assembly of interlocked brake, switch lever (73), separating brake handle (74), energy accumulation handle (72) and energy-stored spring.
7. vacuum load switch according to claim 6, is characterized in that, described limit assembly comprises operation hand lever action component, the first rotatable parts (713) and the first limiting plate (712); Described operation hand lever action component and described isolating switch main shaft (41) are connected; Described first rotatable parts (713) one end is fixedly connected with described isolating switch main shaft (41), and the other end is flexibly connected with described first limiting plate (712) be arranged on described dividing plate (2).
8. vacuum load switch according to claim 7, is characterized in that, described operational motion parts (711) comprise the first supporting bracket (7112) and round bar (7111); Described round bar (7111) and isolating switch main shaft (41) are coaxially arranged, elastomeric element (71111) is provided with along the axis direction of described isolating switch main shaft (41) between described round bar (7111) and described isolating switch main shaft (41), be provided with the first activity bar (71112) acted on by described elastomeric element (71111) in described round bar (7111), the avris of described round bar (7111) offers loose slot in order to hold described first activity bar (71112); Chute is become to coordinate between described first supporting bracket (7112) and described dividing plate (2), and described first supporting bracket (7112) is arranged on the side of described round bar (7111), described first supporting bracket (7112) and described first activity bar (71112) realize dynamic cooperation.
9. vacuum load switch according to claim 7, is characterized in that, described limit assembly also comprises the second rotatable parts (714); Described operational motion parts (711) comprise the first supporting bracket (7112), round bar (7111) and the second supporting bracket (7113); Described round bar (7111) and isolating switch main shaft (41) are coaxially arranged, elastomeric element (71111) is provided with along the axis direction of described isolating switch main shaft (41) between described round bar (7111) and described isolating switch main shaft (41), be provided with the first activity bar (71112) acted on by described elastomeric element (71111) in described round bar (7111), the avris of described round bar (7111) offers loose slot in order to hold described first activity bar (71112); Chute is become to coordinate between described first supporting bracket (7112) and described dividing plate (2), and described first supporting bracket (7112) is arranged on the side of described round bar (7111), described first supporting bracket (7112) and described first activity bar (71112) realize dynamic cooperation; One end of described second rotatable parts (714) is connected with described switch lever (73) and separating brake handle (74) respectively, and the other end and described second supporting bracket (7113) of described second rotatable parts (714) are connected; Chute is become to coordinate between described second supporting bracket (7113) and described dividing plate (2), and described second supporting bracket (7113) is arranged on the opposite side of described round bar (7111), described second supporting bracket (7113) and described first activity bar (71112) realize dynamic cooperation.
10. vacuum load switch according to claim 7, it is characterized in that, described limit assembly also comprises the 3rd rotatable parts, described 3rd rotatable parts comprise the fixed part be fixedly installed on described isolating switch main shaft (41), and described fixed part is connected with the big spring (7151) be fixed in described frame (1) by the first linkage board; Described fixed part is the endless member with opening, described endless member be circumferentially provided with the first extension block and the second extension block, the distance of described first extension block and described second extension block circumferencial direction is described operational motion parts (711) operating distance.
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| CN201410615129.3A CN104319164B (en) | 2014-11-05 | 2014-11-05 | A kind of vacuum load switch |
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| CN201410615129.3A CN104319164B (en) | 2014-11-05 | 2014-11-05 | A kind of vacuum load switch |
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