CN100547710C - The interlocking device of high voltage isolator and vacuum contactor and high-voltage board door - Google Patents

Abstract

The interlocking device of a kind of high voltage isolator and vacuum contactor and high-voltage board door belongs to electric equipment safety guard technical field.Comprise that one is installed in that cabinet door that being used on the cabinet door inwall in hyperbaric chamber control the hyperbaric chamber is opened or first mechanical locking and of locking is installed in described cabinet being used on the wall provides separating brake or switching signal and also be used to control isolating switch separating brake on the described cabinet door simultaneously or second mechanical locking and of combined floodgate is used to the key handling first, second mechanical locking locking or open the vacuum contactor of being located at the hyperbaric chamber outdoors.Advantage: overall structure is simple, the reliability standard height; Only need the installing hole of the first lock core degree of on the cabinet door, offering, therefore easy for installation; The cost of first, second mechanical lock device only is 1/10th of a prior art device, therefore has economy; First, second mechanical locking jointly is controlled by same key, and promptly stream oriented device share a key, and is therefore safe and reliable.

Description

The interlocking device of high voltage isolator and vacuum contactor and high-voltage board door

Technical field

The invention belongs to electric equipment safety guard technical field, be specifically related to the interlocking device of isolating switch and vacuum contactor and high-voltage board door.

Background technology

Known, major loop is made of isolating switch, vacuum contactor and high-voltage load, wherein, and by the on-off of isolating switch, vacuum contactor control high-voltage load.Aforesaid load is if high-voltage capacitor abbreviates the high-voltage capacitance cabinet so as, and then abbreviates capacitor box as.In the primary heat transport system that constitutes by isolating switch, vacuum contactor and high-voltage capacitance, need cabinet door, vacuum contactor, the isolating switch of high-voltage capacitor cabinet are carried out interlocking, use and realize that five is anti-.So-called five anti-being meant: 1, prevent on-load branch, combined floodgate; 2, prevent to divide mistake to run the pass jointly by mistake; False switching when 3, preventing the earthed switch closure; 4, prevent charged mistiming splice grafting ground switch; 5, prevent mistakenly entering charged chamber.Realize that aforesaid five is anti-, then must guarantee: (1) disconnects vacuum contactor earlier, draws isolating switch again, causes the high-voltage arc short circuit to prevent on-load from drawing isolating switch; (2) only draw the cabinet door that just can open the cabinet door that the cabinet door is the hyperbaric chamber behind (disconnection) isolating switch or claim high-voltage board, prevent that the staff is strayed into electrification in high voltage at interval and cause the accident; (3) when the cabinet door is opened, do not allow to close isolating switch, avoid the introducing of high pressure and jeopardize personal safety.

Two kinds of structural measures are arranged at present: the one, position switches on isolating switch reaches the purpose that disconnects vacuum contactor when drawing (separating brake) isolating switch earlier; High-voltage charge display device (industry claims to be with locking type) is installed on the cabinet door, electromagnetic lock is installed on the door.When in cabinet high pressure being arranged like this, display is bright, and reminds people has electricity, and electromagnetic lock is by locking simultaneously, and the cabinet door can't be opened.The shortcoming of this design be required element expense higher, on the cabinet door, must offer the hole that is used for installing electrification display and electromagnetic lock, especially when the cabinet door is in opening, because electromagnetic lock is inoperative, therefore also must takes to pin isolating switch and not allow the measure of closing a floodgate (in native system can only with adding the chain electrical interlocks method of travel switch and vacuum contactor on the door).The 2nd, deciliter employing change over switch of vacuum contactor, as LWR (KK) change over switch that adopts industry generally to know, carry out program control with procedure lock, this design can not be used the push-botton operation vacuum contactor, and on the cabinet door, need perforate to lock with installation procedure, the whole operation step is cumbersome, and expense is also high.

In sum, all embody owing to realize at present the isolating switch and the technical measures of five anti-interlockings of vacuum contactor, cabinet door, so reflect inevitably that complex structure, installation exercise are cumbersome, poor reliability, failure rate height, troublesome poeration, lose economy with non-mechanical structural design.

Summary of the invention

Task of the present invention be to provide a kind of simple in structure, easy for installation, reliability is high, pure machinery, the interlocking device that can demonstrate fully safe high voltage isolator and vacuum contactor and high-voltage board door.

Task of the present invention is finished like this, the interlocking device of a kind of high voltage isolator and vacuum contactor and high-voltage board door, it comprises that one is installed in that cabinet door that being used on the cabinet door inwall in hyperbaric chamber control the hyperbaric chamber is opened or first mechanical locking and of locking is installed in described cabinet being used on the wall provides separating brake or switching signal and be used to control isolating switch separating brake on the described cabinet door simultaneously or second mechanical locking and of combined floodgate is used to handle first the vacuum contactor of being located at the hyperbaric chamber outdoors, locking of second mechanical locking or the key of opening, described first mechanical locking comprises first lock core that has dead bolt and match with described key, latch, first bearing pin, first torsion spring, support, first lock core is installed on the cabinet door, dead bolt is positioned at the inboard of cabinet door, the rear end of latch by first bearing pin and hub setting on support, the front end of latch is for raming, with the cabinet door the door along corresponding, support is fixed on the inwall of cabinet door, first torsion spring is nested with on first bearing pin, and the torsion spring pin of first torsion spring is positioned on the latch, described second mechanical locking comprises lock housing, second lock core that matches with described key, cam, dead bolt, the latch lever swing arm, latch lever, lock housing is installed on the outer wall of cabinet door, and be positioned at a side of described isolating switch, in the shell chamber of this lock housing, the sensitive switch that is electrically connected with described vacuum contactor is installed, second lock core is fixed on the lock housing, cam is fixed on second lock core, rotation with second lock core is rotated, be located on the lock housing to the dead bolt telescopic action, and the lock tongue of dead bolt upper end is stuck in lock housing, corresponding with the isolating switch alignment pin of described isolating switch, on dead bolt, be arranged with spring and bolt plate respectively, touch with the inwall and the bolt plate subsides of lock housing respectively at the two ends of its medi-spring, and bolt plate is corresponding with described cam, the upper end of latch lever swing arm is suspended on the lock housing by second bearing pin, and second bearing pin is provided with second torsion spring, the a pair of torsion spring pin of second torsion spring is positioned at respectively in lock housing and the latch lever swing arm, the lower end of latch lever swing arm is a free end, this free end is spacing by the stop screw that is fixed on the lock housing, latch lever is fixed on the bottom of latch lever swing arm, and corresponding with the divide-shut brake handle of isolating switch below described isolating switch.

Being shaped as of latch of the present invention is L shaped.

The position of lock housing of the present invention on the cabinet door occupy the left side of isolating switch, and maintains distance between the left side of isolating switch, and the horizontal range that described distance is with the isolating switch alignment pin is able to extract in isolating switch equates.

Constitute first, second locked position contact angle and sensitive switch contact bead on the wheel rim of cam of the present invention respectively, wherein, the second locked position contact angle occupy the first locked position contact angle and contacts between the bead with sensitive switch, and first, second locked position contact angle acts on described bolt plate.

The middle part of latch lever swing arm of the present invention constitutes one and is used to stop the step of cam to counterclockwise motion.

Lock tongue of the present invention constitutes a milling flat in the side towards described isolating switch alignment pin.

Being shaped as of latch lever of the present invention is L shaped.

The present invention has replaced in the prior art with first, second mechanical locking or has used the combining structure of charged display unit and electromagnetic lock, or the fit structure of change over switch and procedure lock, so overall structure is simple, the reliability standard height; Only need the installing hole of the first lock core degree of on the cabinet door, offering, therefore easy for installation; The cost of first, second mechanical lock device only is 1/10th of a prior art device, therefore has economy; First, second mechanical locking jointly is controlled by same key, and promptly stream oriented device share a key, and is therefore safe and reliable.

Description of drawings

Fig. 1 is one embodiment of the invention structure chart.

Fig. 2 to Fig. 4 is the interlocking action schematic diagram of second mechanical locking of the present invention.

Embodiment

For make your auditor especially the public can further understand architectural feature of the present invention and beneficial effect thereof, the spy reaches embodiment in conjunction with the accompanying drawings specific implementation of the present invention is described in detail as follows:

See also Fig. 1, provided the cabinet door 1 in hyperbaric chamber, do not have not with prior art: in the hyperbaric chamber, dispose vacuum contactor, on the cabinet door 1 in hyperbaric chamber, isolating switch 4 is installed, the isolating switch operating mechanism of the common employing of industry (model is CS6-1) for example, the former isolating switch alignment pin 41 that just disposes on isolating switch 4, only after extracting isolating switch alignment pin 41, the divide-shut brake handle 42 of isolating switch 4 could be done to close a floodgate or the separating brake action, upwards push away then for closing a floodgate, otherwise then be separating brake, in case separating brake or feed motion are finished, isolating switch alignment pin 41 springs in (carrying spring) isolating switch dowel hole 44 or isolating switch dowel hole 43 to the isolating switch 4 automatically, uses the divide-shut brake action that stops or claiming control divide-shut brake handle 42.

The preference of the isolating switch 4 that the present invention recommended and the interlocking device of vacuum contactor is by following detailed description.At the inwall of cabinet door 1 and be close to first mechanical locking 2 is set along 11 places, comprise first lock core 21 as structure preferred but first mechanical locking 2 that is not limited to, latch 22, first bearing pin 23, first torsion spring 24, support 25, support 25 is adorned solid inboard at cabinet door 1 promptly on the door inwall with welding or riveted joint or with screw or with other similar mode, the shape of latch 22 is L-shaped substantially or claim 7 fonts, more be tending towards the V fontization, by first bearing pin 23 with latch 22 hub settings on support 25, the material of latch 22 both can be a metal, also can be nonmetal as plastics, the right-hand member of latch 22 (location status with current icon is an example) is for raming 221, corresponding to cabinet door 1 the door along 11, by door along 11 pairs ram 221 the effect.Be used to make first torsion spring 24 of latch 22 self-returns to be nested with, and torsion spring pin 241 hooks of first torsion spring 24 (location) on latch 22 at first bearing pin 23.After cabinet door 1 is opened, 221 have broken away from by the door of cabinet door 1 along 11 bruising owing to ram, the energy storage of first torsion spring 24 discharges, first arrow, 6 directions that mark in 211 towards figure of raming are rotated a certain angle, and bending part 222 towards second arrows 7 directions of the tail end of latch 22 are rotated corresponding angle, dead bolt 211 has been lived in block, dead bolt 211 can't rotate at the end left in this case, and because dead bolt 211 can't rotate to the end left, therefore key 5 can't pull away from first lock core 21, unless after cabinet door 1 is closed, touch along 11 by door and to ram 211, the rightabout of 211 towards first arrows 6 of raming is rotated to an angle, the rightabout of bending part 222 towards second arrows 7 rotates corresponding angle simultaneously, avoid blocking dead bolt 211 left-handed passages on earth, it is on earth left-handed that dead bolt 211 is able to, and could extract key 5 from first lock core 21.Know therefrom, at cabinet door 1 not under the closing state, can't pull up owing to be used for handling on first lock core 21 that same key 5 of first, second mechanical locking 2,3 be maintained at first mechanical locking 2, thereby just can't remove to handle second mechanical locking 3, vice versa, will describe in detail after treating.The fixed form of first lock core 21 on cabinet door 1 is known general knowledge, as long as on cabinet door 1, offer the hole that is used for for 21 compensation of first lock core, dead bolt 211 dextrorotation are locking on earth, particularly are locked together on the doorframe flanging 121 of doorframe 12 or in the dead bolt hole of offering on the doorframe flanging 121 or in the groove.As seen, adopt the present invention program only to need on cabinet door 1, to offer the installing hole of first lock core, 21 degree, on cabinet door 1, offer macropore and come the installation procedure lock and need not to resemble the prior art for installation procedure lock and change over switch, and the troublesome poeration of procedure lock, reliability standard poor, cost an arm and a leg; Again, adopt the present invention program to need not to resemble the prior art to installation high-voltage charge display device (band locking type) and electromagnetic lock and on cabinet door 1, offer two macropores for installation, and high-voltage charge display device, the required element expense of electromagnetic lock are higher, especially when cabinet door 1 is in opening, electromagnetic lock no longer works, and the present invention is when cabinet door 1 is opened, because key 5 can not pull away from first lock core 21, thereby can not remove to handle second mechanical locking 3, thereby can stop to open the danger situation of mistiming disconnecting switch operation 4 at the cabinet door with key 5.

Still see also Fig. 1, the tram of second mechanical locking 3 on cabinet door 1 outer wall that the present invention recommends is the right side that is in isolating switch 4, and it preferably but the structure that definitely is not limited to is done following narration in detail.One is substantially rectangle or claims the lock housing 31 usefulness screws of rectangular cover by housing screw 312 to be installed and is fixed on the outer wall of cabinet door 1, and the distance of being held between the left side of the right side of lock housing 1 (same is example with present shown position state) and isolating switch 4 should ensure that the horizontal range that isolating switch alignment pin 41 is able to extract the dowel hole 43,44 from isolating switch 4 adapts.Bottom in the shell chamber of lock housing 31 is screwed a sensitive switch 311 that is connected with the vacuum contactor circuit that is arranged in the hyperbaric chamber, and this sensitive switch 311 is essentially control switch, is used for controlling the combined floodgate and the separating brake of vacuum contactor.Be installed in the position placed in the middle, positive side of lock housing 31 as second lock core 32 of second mechanical locking 3, the structure of this second lock core 32 is identical with the structure of above-cited first lock core 21, and principle also is identical.This lock core is 401 locks (industry standard) as adopting the model of being produced by Chinese Wenzhou City, Zhejiang Province Rui'an City sea smooth lockset Co., Ltd, and concrete principle is: have only left-handed 90 ° key 5 could be extracted, and dextrorotation on earth the time key 5 can't extract.Know that therefrom the present invention solves aforesaid five with the two terse schemes of locking a key (the same key of two locks) to prevent.

Being used for cam 33 to 343 effects of the following bolt plate that also will describe in detail passes cam hole 331 by hold-down screw 336 and is positioned on second lock core 32, moves along with the motion of second lock core 32.Cam 33 constitutes and a pair ofly all can act on first of bolt plate 343, the second locked position contact angle 332,333 and one sensitive switch contact bead 334, state (stretching out) with the dead bolt 34 shown in the present figure is an example, under the manipulation of key 5, drive cam 33 actions by second lock core 32, the first locked position contact angle 332 of cam 33 is kept out on bolt plate 343, bolt plate 343 is upwards pushed away, spring 342 compressions, dead bolt 34 is up, lock tongue 341 stretches out, and sensitive switch contact bead 334 is touched the haptic element 3111 in sensitive switch 311, sensitive switch 311 is given vacuum contactor in the hyperbaric chamber with signal feedback, vacuum contactor is in "on" position, simultaneously, isolating switch 4 must be to be in the position of closing a floodgate, it is the position that divide-shut brake handle 42 is pushed to, and the isolating switch alignment pin 41 that carries spring 411 has been inserted in the dowel hole 43, and the milling flat 3411 on the lock tongue 341 of dead bolt 34 has blocked isolating switch alignment pin 41, this moment, key 5 can't be pulled up from second lock core 32, therefore can not go to open cabinet door 1 with key 5, promptly can not remove to handle first lock core 21 of first mechanical locking 2 with key 5, therefore be foolproof, all location status applicants of dead bolt 34 will narrate when Fig. 2 to Fig. 4 is illustrated comprehensively.

The upper end of dead bolt 34 should be that telescopically work places on the lock housing 31, and the lower end places dead bolt to help on the seat 344, and dead bolt helps seat 344 to be screwed below lock housing 31.Already mentioned spring 342 in front and bolt plate 343 all are located on the dead bolt 34, wherein, keep out respectively on the upper surface of the inwall of lock housing 31 and bolt plate 343 at the two ends of spring 342, promoted bolt plate 343 by resetting (extension) of spring 342 descending, because bolt plate 343 fixes with dead bolt 34, therefore dead bolt 34 is also descending, promptly in lock housing 31, bounce back, and when first, second locked position contact angle 332,333 of cam 33 makes progress pushing tow bolt plate 343, spring 342 compressions, dead bolt 34 stretches outside lock housing 31.

Latch lever swing arm 35 is arranged on a side of lock housing 31 in cantilever state by second bearing pin 351, and the lower end of latch lever swing arm 35 is a free end, by stop screw 353 tube banks.Constitute a gauffer at the nearly middle part of latch lever swing arm 35, constitute step 354 by this gauffer, again, owing to the appearance of this step 354 makes the global shape of latch lever swing arm 35 be zigzag or is referred to as font.Latch lever swing arm 35 comes from second torsion spring 352 by the active force to stop screw 353.When first of cam 33, the second locked position contact angle 332,333 when all not acting on bolt plate 343, the sensitive switch of cam 33 contact bead 334 breaks away from haptic elements 3111 just and has been in the below on protruding rank 354, this moment is owing to suffer stopping of step 354, cam 33 can't be done counterclockwise spinning movement, unless with latch lever swing arm 35 pendulum from, make its step 354 dodge sensitive switch contact bead 334, and to make latch lever swing arm 35 pendulum from, then must by shape L-shaped and realize with the latch lever 36 that latch lever swing arm 35 connects, and then ground will make latch lever 36 actions, then must embody by divide-shut brake handle 42, divide-shut brake handle 42 is pulled sub-gate position postpone downwards, the left-handed key 5 of turn, make cam 33 left-handed, the second locked position contact angle 333 by cam 33 is kept out in bolt plate 343, bolt plate 343 is upwards pushed away, dead bolt 34 stretches out in lock housing 31 simultaneously, key 5 could be pulled away first lock core 21 of handling first mechanical locking 2 from second lock core 32 under this state.Again, under this state, sensitive switch contact bead 344 has been in and has broken away from and away from the position of haptic element 3111, the vacuum contactor that is electrically connected with sensitive switch 311 certainly will be in separating brake (disconnection) state.

See also Fig. 2, Fig. 3, Fig. 4 and in conjunction with Fig. 1, the applicant sets forth the operation principle of the interlocking device of isolating switch of the present invention and vacuum contactor.The position of the cam 33 that Fig. 2 showed is a locked position, promptly be inserted in key 5 on second lock core 32 of second mechanical locking 3 with clockwise 45 ° of actuatings, cam 33 with second lock core 32 to turning clockwise 45 °, the first locked position contact angle 332 of cam 33 contacts with bolt plate 343, and bolt plate 343 upwards pushed away, driving dead bolt 34 stretches out in lock housing 31, and the isolating switch 4 of this moment is in closing position owing to divide-shut brake handle 42 upwards boosts, isolating switch alignment pin 41 pins are gone into (insertion) in dowel hole 43, and stop by the milling flat 3411 on the lock tongue 341 of dead bolt 34, can't again this isolating switch alignment pin 41 be pulled away artificially, because in case pull away and can handle divide-shut brake handle 42, as divide-shut brake handle 42 is opened up the separating brake position to lower plate.And under this state, because the sensitive switch of cam 33 contact bead 334 is to touch mutually with the haptic element 3111 of sensitive switch 311, therefore the vacuum contactor in the hyperbaric chamber is in closing position, major loop is in running order, key 5 can't be pulled out from second lock core 32, therefore the situation that just cabinet door 1 can not occur opening.

But the position of the cam 33 that Fig. 3 shows is an open position, but key 5 still is on second lock core 32 and can't pulls out, embody with counterclockwise 45 ° of actuating keys 5 this position, because when Fig. 2 position, key 5 has been in dead point (stop) towards clockwise rotation, promptly can't so that to clockwise turn, can only be to counterclockwise turn, touch mutually with bolt plate 343 so but the open position 335 (Fig. 1 shows) of the cam 33 shown in this figure occurred, that is to say the effect of having removed previous 332 pairs of bolt plate 343 of the first locked position contact angle, bolt plate 343 is descending under the restoring force effect of spring 342, it is descending to take dead bolt 34 by bolt plate 343, promptly in lock housing 31, bounce back, the lock tongue 341 of dead bolt 34 has been reduced to the level height position that is lower than isolating switch location lock 41, sensitive switch contact bead 334 has been left haptic element 3111, vacuum contactor is in the disjunction state, be that dead electricity discharges, load promptly goes out system, under this state, just be able to safely isolating switch alignment pin 41 be extracted from isolating switch 4, just be able to after extracting divide-shut brake handle 42 is pulled separating brake downwards or claimed open position, and then isolating switch alignment pin 41 is planted in the dowel hole 44.

Fig. 4 has shown plant situation in the dowel hole 44 of isolating switch alignment pin 41, and cam 33 is in locking state, and only key 5 can be pulled out under this state.Because, in order to prevent to pull away isolating switch alignment pin 41 artificially on/off switch handle 42 upwards is pushed to closing position, therefore need again cam 33 left-handed 45 °, and get so that cam 33 left-handed 45 ° safeguards are to be avoided sensitive switch stopping of bead 334 of contact embodied by the step 354 of latch lever swing arm 35, when moving the end to, divide-shut brake handle 42 latch lever 36 is pressed down by it, promoting latch lever swing arm 35 by latch lever 36 swings, be in the limit during to 45 ° and be in left-handed dead point in that cam 33 is left-handed, the second locked position contact angle 333 of cam 33 acts on bolt plate 343, under the active force that overcomes spring 342, bolt plate 343 is upwards pushed away, driving dead bolt 34 by bolt plate 343 stretches outside lock housing 31, make the milling flat 3411 of lock tongue 341 be barred from the tail end of isolating switch alignment pin 41, thereby can't drawing isolating switch alignment pin 41, guarantee that isolating switch 4 is in the separating brake position perfectly safely.And, if aforesaid cam 33 left-handed to 45 ° before, be eager to extract key 5 and open cabinet door 1, though the vacuum contactor dead electricity discharges, but stake still has high pressure on it, therefore structure of the present invention is only left-handed during to 45 ° at cam 33, promptly just can extract key 5 during position shown in this figure and remove to open cabinet door 1, thereby be foolproof.

Above-mentioned explanation by the applicant, should understand achievement of the present invention is to handle first, second mechanical locking 2,3 respectively with two locks, one key, as long as any one mechanical locking does not satisfy the condition that key 5 is extracted, then can't handle, so both are related each other, pin down mutually to another mechanical locking.Reached and prevented on-load separating brake or combined floodgate, prevent that mistake from dividing mistake to close isolating switch 4, prevent false switching when earthed switch is closed, prevent charged mistiming splice grafting ground switch, preventing that five of mistakenly entering charged chamber (hyperbaric chamber) from preventing requirements.That is to say, guaranteed first disconnection vacuum contactor, draw isolating switch 4 again; Avoid on-load to draw isolating switch 4 and cause the high-voltage arc short circuit; Only draw back isolating switch 4, could open cabinet door 1, the personnel of preventing are strayed into electrification in high voltage and cause the accident at interval; When cabinet door 1 is opened, do not allow to close isolating switch 4, avoid the introducing of high pressure to jeopardize personal safety.

Claims (7)

1, the interlocking device of a kind of high voltage isolator and vacuum contactor and high-voltage board door, it is characterized in that it comprises that one is installed in that cabinet door (1) that being used on cabinet door (1) inwall in hyperbaric chamber control the hyperbaric chamber is opened or first mechanical locking (2) and of locking is installed in being used on described cabinet door (1) outer wall vacuum contactor of being located at the hyperbaric chamber is provided separating brake or switching signal and is used to control isolating switch (4) separating brake on the described cabinet door (1) simultaneously or second mechanical locking (3) and of combined floodgate is used to handle first, second mechanical locking (2,3) key (5) of locking or unlatching, described first mechanical locking (2) comprises have dead bolt (211) and first lock core (21) that matches with described key (5), latch (22), first bearing pin (23), first torsion spring (24), support (25), first lock core (21) is installed on the cabinet door (1), dead bolt (211) is positioned at the inboard of cabinet door (1), the rear end of latch (22) by first bearing pin (23) and hub setting on support (25), the front end of latch (22) is ram (221), corresponding with the door of cabinet door (1) along (11), support (25) is fixed on the inwall of cabinet door (1), first torsion spring (24) is nested with on first bearing pin (23), and the torsion spring pin (241) of first torsion spring (24) is positioned on the latch (22), described second mechanical locking (3) comprises lock housing (31), second lock core (32) that matches with described key (5), cam (33), dead bolt (34), latch lever swing arm (35), latch lever (36), lock housing (31) is installed on the outer wall of cabinet door (1), and be positioned at a side of described isolating switch (4), the sensitive switch (311) that is electrically connected with described vacuum contactor is installed in the shell chamber of this lock housing (31), second lock core (32) is fixed on the lock housing (31), cam (33) is fixed on second lock core (32), rotation with second lock core (32) is rotated, be located on the lock housing (31) to dead bolt (34) telescopic action, and the lock tongue (341) of dead bolt (34) upper end is stuck in lock housing (31), corresponding with the isolating switch alignment pin (41) of described isolating switch (4), on dead bolt (34), be arranged with spring (342) and bolt plate (343) respectively, touch with the inwall and bolt plate (343) subsides of lock housing (31) respectively at the two ends of its medi-spring (342), and bolt plate (343) is corresponding with described cam (33), the upper end of latch lever swing arm (35) is suspended on the lock housing (31) by second bearing pin (351), and second bearing pin (351) is provided with second torsion spring (352), the a pair of torsion spring pin of second torsion spring (352) is positioned at respectively in lock housing (31) and the latch lever swing arm (35), the lower end of latch lever swing arm (35) is a free end, this free end is spacing by the stop screw (353) that is fixed on the lock housing (31), latch lever (36) is fixed on the bottom of latch lever swing arm (35), and corresponding with the divide-shut brake handle (42) of isolating switch (4) in the below of described isolating switch (4).

2, the interlocking device of high voltage isolator according to claim 1 and vacuum contactor and high-voltage board door is characterized in that being shaped as of described latch (22) is L shaped.

3, the interlocking device of high voltage isolator according to claim 1 and vacuum contactor and high-voltage board door, it is characterized in that the position of described lock housing (31) on cabinet door (1) occupy the left side of isolating switch (4), and maintain distance between the left side of isolating switch (4), the horizontal range that described distance is with isolating switch alignment pin (41) is able to extract in isolating switch (4) equates.

4, the interlocking device of high voltage isolator according to claim 1 and vacuum contactor and high-voltage board door, it is characterized in that constituting respectively on the wheel rim of described cam (33) first, second locked position contact angle (332,333) and sensitive switch contact bead (334), wherein, the second locked position contact angle (333) occupy the first locked position contact angle (332) and contacts with sensitive switch between the bead (334), and first, second locked position contact angle (332,333) acts on described bolt plate (343).

5, the interlocking device of high voltage isolator according to claim 1 and vacuum contactor and high-voltage board door, the middle part that it is characterized in that described latch lever swing arm (35) constitutes one and is used to stop the step (354) of cam (33) to counterclockwise motion.

6, the interlocking device of high voltage isolator according to claim 1 and vacuum contactor and high-voltage board door is characterized in that described lock tongue (341) constitutes a milling flat (3411) in the side towards described isolating switch alignment pin (41).

7, the interlocking device of high voltage isolator according to claim 1 and vacuum contactor and high-voltage board door is characterized in that being shaped as of described latch lever (36) is L shaped.

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