CN1154210C - Interlocking device for closed electric distribution panel - Google Patents
Interlocking device for closed electric distribution panel Download PDFInfo
- Publication number
- CN1154210C CN1154210C CNB981163858A CN98116385A CN1154210C CN 1154210 C CN1154210 C CN 1154210C CN B981163858 A CNB981163858 A CN B981163858A CN 98116385 A CN98116385 A CN 98116385A CN 1154210 C CN1154210 C CN 1154210C
- Authority
- CN
- China
- Prior art keywords
- maintenance cover
- closing device
- bonnet
- opening
- interlock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Patch Boards (AREA)
Abstract
A locking bar 80 is arranged in a state where the bar 80 is swung in the forward-backward direction between a back lid 12 which is attached to a transmission chamber 3 as an inspection cover and an earthing switch 6. The base end of the bar 80 is coupled with an oscillating lever 65 through a coupling link 81 so that the bar 8 may be pushed and pulled through the link 81 in accordance with the oscillation of the lever 65. When the switch 6 is in a non-earthing state, the front end of the bar 80 pushed by the link 81 comes into contact with part of the lid 12, and restricts the lid 12 in a closed state by inhibiting the upward movement of the lid 12 which is required prior to the opening of the lid 12. When the switch 6 is set to an earthing state, on the other hand, the bar 80 is pulled backward by the oscillation of the lever 65 and separated from the lid 12. Therefore, the bar 80 does not inhibit the upward movement of the lid 12 and the lid 12 becomes openable. So,the lid can be locked or unlocked depending on the state of the earthing switch.
Description
The present invention relates to covering the maintenance cover of the cable vault that is provided with the load-side conductor in the enclosed switchboard according to the load-side conductor that causes because of the earthed switch interlock whether ground connection is interlocked.
The next door that enclosed switchboard forms with grounded metal or insulating material will be separated mutually as the inside of the outer container of grounded metal casing, form a plurality of chambers, in these chambers, be respectively charged into the bus bar side branch conductors that is connected with common bus, carry load-side conductor that the power transmission cable of electric usefulness is connected, make two conductors from, the switching device that closes and monitor the internal unit of control appliance that control is essential etc. with the load of other electric panel room and load equipment etc.
In such enclosed switchboard, cover above-mentioned each chamber respectively and it can be opened and closed from the outside respectively with the maintenance cover, can open the internal unit that this maintenance cover overhauls each chamber respectively.When carrying out this maintenance, electric shock accidents takes place for the residual voltage that prevents internal unit causes the maintainer, before maintenance cover is opened, to make the equipment ground of being overhauled, especially for be provided with may residual high-tension load-side conductor chamber (cable vault) often be provided with the interlock of forbidding opening the maintenance cover before still unearthed.
As this interlock, the known Japanese patent of invention that has discloses the disclosed device of communique 1980 No. 18805.This device makes the take-off lever of the electromagnetic driver that is installed in outer container engage with the part of maintenance cover, make it play the locking action of forbidding that this maintenance cover is opened, simultaneously as the condition of carrying out the ground connection operation, above-mentioned electromagnetic driver is carried out excitation remove and overhaul engaging of cover, thereby allow to open this maintenance cover.
Yet, there are the following problems for aforesaid existing interlock: for excitation and the demagnetization of carrying out electromagnetic driver, must there be detection whether to carry out the keying status detection device of the checkout gear of ground connection operation, maintenance cover, carried out the control circuit that above-mentioned excitation and demagnetization are used, causes the complicated of structure according to this testing result.
In addition, when above-mentioned detection device or control circuit produce when unusual, might be able to not interlock or remove interlocking, especially in the time can not obtaining Interlock Status, might under unearthed state still, open the maintenance cover mistakenly, cause the generation of above-mentioned electric shock accidents.
Problem in view of above-mentioned existence, the object of the present invention is to provide a kind of interlock, this interlock is provided with the maintenance cover that the cable vault of load-side conductor opens and closes for keying, can ground connection mechanically lock and unlock according to whether, reliably prevent under unearthed state, to open the maintenance cover.
The interlock of technical solution of the present invention 1 described enclosed switchboard is provided with the locking device that comprises sticking department and connecting portion, described sticking department is located near the described maintenance cover of described outer container inside and when the ground connection of described grounding opening-closing device is removed, described maintenance cover is limited in closed condition, described connecting portion is connected described sticking department with the moving part of described grounding opening-closing device, make that described sticking department is positioned at the position of not limiting described maintenance cover when described grounding opening-closing device ground connection, and described sticking department is positioned at the position of limiting described maintenance cover when described grounding opening-closing device ground connection releasing.
In the present invention, when the operational grounding derailing switch has carried out the ground connection operation to the load-side conductor, because described sticking department is positioned at the position of not limiting described maintenance cover, so, but the maintenance cover of cable vault is opening, and when having carried out ground connection releasing operation,, be constrained to closed condition so maintenance is covered because described sticking department is positioned at the position of the described maintenance cover of restriction.
The interlock of technical solution of the present invention 2 described enclosed switchboards, but described maintenance cover is by the chimeric opening of removing with outer container that is that moves of a direction in its installed surface, the sticking department of described locking device be its top and described maintenance cover a part against and limit described mobile securing rod, the connecting portion of described locking device is that described securing rod is connected with the grounding opening-closing device moving part, pushes away or draw this securing rod and the connecting rod that is connected that it is being moved between rest position and the non-rest position at the long axis direction of this securing rod.
In the present invention, moving by a direction in installed surface on the chimeric and openable maintenance cover of removing fitting portion, be provided with and the butting section of securing rod top against usefulness, when the action along with the grounding opening-closing device moving part promotes securing rod through connecting connecting rod, its top and butting section against, restriction maintenance cover is for removing above-mentioned chimeric moving, it is constrained to closed condition, and work as securing rod when pulled, its top and butting section against releasing, allow the maintenance cover to move and can open.
The interlock of technical solution of the present invention 3 described enclosed switchboards, utilize the strength bar be erected at maintenance cover medial surface as with securing rod against member.
In the present invention, as make securing rod against the butting section, special-purpose member is not set, and utilizes the strength bar that is erected at maintenance cover medial surface.
The interlock of technical solution of the present invention 4 described enclosed switchboards, have the action bars of action of operational grounding derailing switch and the operator link of the moving part that is connected described action bars and grounding opening-closing device, the connection connecting rod of described locking device is connected with described moving part at the connecting portion that described operator link is connected with described moving part.
In the present invention, in order to connect the connection connecting rod that the action of grounding opening-closing device moving part is passed to securing rod, utilized grounding opening-closing device to carry out ground connection operation and ground connection is removed operation originally with regard to the connecting portion of essential operation with connecting rod, so do not need to increase special-purpose member.
Figure 1 shows that the side sectional view of the model utility structure of enclosed switchboard with interlock of the present invention.
Fig. 2 is the front view of enclosed switchboard shown in Figure 1.
Fig. 3 is the rearview of enclosed switchboard shown in Figure 1.
Figure 4 shows that the pith amplification view of the mounting structure of the enclosed switchboard bonnet that covers as maintenance.
Fig. 5 be along the V-V line of Fig. 4 to view.
Fig. 6 is the cutaway view along the VI-VI line of Fig. 4.
Fig. 7 is the end view that interlock structure of the present invention and grounding opening-closing device operating mechanism are shown.
Fig. 8 is the end view that interlock structure of the present invention and grounding opening-closing device operating mechanism are shown.
Following accompanying drawing according to the invention process form is described in detail the present invention.Fig. 1 has the side sectional view of formation of the enclosed switchboard of interlock of the present invention for model utility illustrates, Fig. 2 is the front view of Fig. 1, and Fig. 3 is the rearview of Fig. 1.
Separate the inside of the outer container 1 of the grounded metal of rectangular box-shaped mutually in the next door that this enclosed switchboard is made with grounded metal or insulating material, form the bus-bar room 2 be provided with bus bar side branch conductors 20, the cable vault 3 that is provided with load-side conductor 30, in be equipped with as the tie breaker chamber 4 of the tie breaker 40 of switching device and in not shown control appliance is housed control appliance chamber 5.
First half (left side of Fig. 1) at outer container 1, be formed with side by side up and down in tie breaker chamber 4 of its underpart and control appliance chamber 5 at an upper portion thereof, this forward chamber can freely cover Yi Bian be hinged on the fan of two on outer container side Qianmen 10,11 respectively by it as shown in Figure 2 with opening and closing.Again, a side side opposite with hinged side that covers the Qianmen 10 of tie breaker chamber 4 leading flanks followed closely extremely with a plurality of set bolt 10a, 10a, so that it can not opened because of inside has an accident to cause pressing in the outer container 1 rising.
The latter half of rear side along control appliance chamber 5 of tie breaker chamber 4 extends to short transverse, its top links to each other with the top board of outer container 1, this extension 4a becomes the air duct of the internal pressure of rising thereupon of releasing when having an accident in 4 inside, tie breaker chamber, and under common user mode, be used as the heat dissipation ventilation road of tie breaker 40.Tie breaker 40 puts on the chassis 41 that can move forward and backward in the bottom surface along tie breaker chamber 4, under the state of Qianmen unlatching, can be pulled out to the place ahead of outer container 1 with chassis.On the rear wall of tie breaker chamber 4, separated by a certain interval up and down, be fixed with the open circuit portion 42,43 of connection with opening surface major loop forwards, above-mentioned tie breaker 40 is in chassis 41 is pushed into short circuit current device chamber 4, be mounted to the state that its splicing ear that stretches out backward 44,44 (only illustrating) is inserted the above-mentioned portion 42,43 that opens circuit, under this installment state, the opening and closing of the not shown contact by interior dress make above-mentioned opening circuit be electrically connected or cut off between the portion 42,43.
Bus-bar room 2 is formed at the rear side of tie breaker chamber 4, and its underpart comprises the extended position of the above-mentioned portion 42 that opens circuit.On the top of bus-bar room 2, the bottom of these bus bar side branch conductors 20,20,20 is connected in the above-mentioned portion 42 that opens circuit 3 the bus bar side branch conductors 20,20,20 that are connected with three-phase bus (not shown) respectively by insulator 21,21,21 insulation supporters.In Fig. 1, only show a circuit breaker 42,43 respectively, but in fact this open circuit portion 42,43 and three-phase are set up in parallel along the thickness direction of paper respectively accordingly, and above-mentioned bus bar side branch conductors 20,20,20 connects with the corresponding portion that opens circuit 42,42,42 respectively.
In addition, cable vault 3 is at the rear side of bus-bar room 2 and along the roughly whole height setting of outer container 1, and its underpart is cut off by the lower wall of bus-bar room 2 and forwards extends, and stretches out the position of setting towards tie breaker chamber 4 rear sides facing to the above-mentioned portion 43 that opens circuit.Power transmission cable C is from the inside of the lead-in cable chamber, bottom surface 3 of outer container 1, this power transmission cable C with by insulator 31,32 insulation supporters its midway the load-side conductor 30 of part be connected.
In addition, above-mentioned load-side conductor 30 is the same with the portion of opening circuit 42,43, is set up in parallel along the thickness direction of paper accordingly respectively with three-phase, and is connected with the corresponding portion that opens circuit 43 respectively.In addition, the part midway of load-side conductor 30 runs through the transformer of being located between the insulator 31,32 33, carry out transformation by 33 pairs of electric currents that flow to load-side conductor 30 along with the conducting of above-mentioned tie breaker 40 of this transformer, flow to the control appliance of 5 inside, control appliance chamber again.
On the extension that stretches to 3 inside, cable vault of the above-mentioned portion 43 that opens circuit, except being connected with above-mentioned load-side conductor 30, also be connected with the earthing conductor 34 that stretches out to the back lower place, 3 the bottom in the cable vault is equipped with grounding opening-closing device 6 facing to the rearward end downside of above-mentioned earthing conductor 34.As shown in the figure, this grounding opening-closing device 6 is provided with by insulator 61 insulation supporters on the pedestal 60 on the bottom surface that is fixed on outer container 1 with ground state, and from the conductor 62 of downside and above-mentioned earthing conductor 34 Elastic Contact, and the connector 63 that is erected at the bolster do swing of left and right directions around the person, by operating the operator link mechanism of back with explanation from the anterior position of tie breaker chamber 4, above-mentioned connector 63 is erected as shown in phantom in FIG., its top is contacted with above-mentioned conductor 62, thereby finish the landing operation of above-mentioned earthing conductor 34 and load-side conductor 30.
Be provided with the rear side of the cable vault 3 of load-side conductor 30 as mentioned above, cover by the up and down a pair of bonnet 12,13 that can be installed in to free loading, unloading outer container 1 back side, comprise the maintenance of internal unit of the cable vault 3 of load-side conductor 30, unload above-mentioned bonnet 12,13, can carry out after the rear side of cable vault 3 is opened wide as maintenance cover.
Fig. 4 is the pith amplification view that bonnet 12,13 mounting structures are shown.14 bearing supports for setting up along the base plate 1a back edge of outer container 1 among the figure, 15 is at the bearing support of interfacial position crossbearer between the sidewall of outer container 1 corresponding to the lower limb of the top edge of bottom bonnet 12 and top bonnet 13.At the upper side of bearing support 14, generally perpendicularly erect and be provided with the chimeric pin 16 that the top makes progress, and on the trailing flank of bearing support 15, be provided with to approximate horizontal and have the chimeric pin 17 that large diameter head 17a and this head 17a protrude backward.
On the other hand, at the medial surface of bonnet 12,13, along near the roughly whole width the lower limb, set up strength bar 12a, 13a that section is the L font respectively.On the above-mentioned strength bar 12a of bottom bonnet 12, run through and be formed with the embedded hole 12b that can insert above-mentioned chimeric pin 16, the bottom of bonnet 12 makes and runs through in the above-mentioned embedded hole 12b into above-mentioned chimeric pin and tabling as shown in the figure, is supported to strength bar 12a and puts state above bearing support 14.Like this, this chimerism of bonnet 12 bottoms is removed by this bonnet 12 upwards being lifted and embedded hole 12b being extracted from the top of chimeric pin 16.
Near the top edge of this external bonnet 12, be formed with the embedded hole 18 that can run through above-mentioned chimeric pin 17.The top of bonnet 12 is supported and can prevents from by making chimeric pin 17 insert above-mentioned embedded hole 18.Fig. 5 be along the V-V line of Fig. 4 to view, as shown in this figure, embedded hole 18 is an irregularly-shaped hole, and promptly so-called burning vasiform orifice can pass the top of the circular hole 18a of chimeric pin 17 head 17a at its diameter, also be provided with the slotted hole 18b of the impenetrable minor diameter of above-mentioned head 17a mutually, in described circular port 18a, pass after the chimeric pin 17, bonnet 12 is moved, as shown in the figure downwards, make the root of chimeric pin 17 run through above-mentioned slotted hole 18b, thereby make it tabling.Like this, this chimerism on bonnet 12 tops makes the correspondence position of the axle center part aligning circular hole 18a of chimeric pin 17 by this bonnet 12 is upwards lifted, and rearward draws under this state, thereby removes chimeric.Like this, unload bonnet 12, this bonnet 12 must be lifted upward mobilely, remove the operation that pulls back after upper and lower chimeric.
On the other hand, the bottom of top bonnet 13 is supported with the state that above-mentioned strength bar 13a puts on bearing support 15.The lower limb that extends the bonnet 13 of setting from this support downwards is overlapped in the top edge inboard of bottom bonnet 12 in the back of support 15, and is made like the embedded hole 18 that inserts chimeric pin 17 usefulness with bonnet 12.Therefore, under the installment state of bottom bonnet 12, bonnet 13 is restricted and can not pulls out backward and upwards lift.In addition on the top of bonnet 13, chimeric by the chimeric pin 17 the same with bottom bonnet 12 tops, as shown in Figure 1, be bearing in the upper edge of outer container 1, after unloading bonnet 12, after upwards being lifted, above-mentioned bonnet 13 rearward pulls out, bonnet 13 can be unloaded.
The bonnet 12,13 of An Zhuaning as shown in Figure 3 like this, the same with the Qianmen 10 of 4 fronts, tie breaker chamber, with set bolt 12c, 12c and 13c, 13c the number place of each dual-side is fixed on the lateral edges of outer container 1, opens because of inner accident presses when rising bonnet in causing preventing.In addition, Width both sides in the outside of bonnet 12,13, respectively be provided with a pair of handle 12d, 12d and 13d, 13d,, can carry out unloading and order installation in contrast to this of aforesaid bonnet 12,13 so that hold this handle 12d, 12d and 13d, 13d.
Again, the strength bar 12a of bonnet 12 medial surfaces is shown in the dotted line among Fig. 3, and as promptly shown in Figure 6 along the cutaway view of the VI-VI line of Fig. 4, set up along whole width roughly respectively, its both ends are near side bracket 1b, the 1b of outer container 1 rear side, when carrying out above-mentioned installation, can be used as the positioner that is bonnet 12 Widths.Same strength bar 12a is provided with many places in the short transverse of bonnet 12, and the strength bar 13a of bonnet 13 medial surfaces also plays same effect simultaneously.
As the bonnet 12 of the maintenance cover of cable vault 3 and the interlock 8 that bonnet 13 utilizes formation as follows, correspondingly locked or unlock with the operation of the grounding opening-closing device 6 of 3 inside, cable vault.Fig. 7 and Fig. 8 are that formation with interlock 8 of the present invention is with the end view shown in the operating mechanism of grounding opening-closing device 6.In addition, the major part of the operating mechanism of grounding opening-closing device 6 and interlock 8 also goes out with line drawing in Fig. 1.
Aforesaid grounding opening-closing device 6 makes its top contact with the conductor 62 that is disposed at the top by making connector 63 swings on the pedestal 60, thereby finishes the landing operation of earthing conductor 34 and load-side conductor 30.The base end part of connector 63 is by extending the bolster 64 of the approximate horizontal that is provided with along the Width of outer container 1, the ground pivot that can freely swing props up on pedestal 60, is fixed with the base end part that the swing arm 65 at roughly the same angle of inclination is arranged with connector 63 in the end of the above-mentioned bolster 64 that stretches out to a side of pedestal 60.Propping up an end of operator link 66 at the top of this swing arm 65 pivot, forwards extend the forward position of the other end of the aforesaid operations connecting rod 66 that is provided with at outer container 1, pivot props up on action bars 68, but this action bars 68 is by with bolster 67 free swaying ground supportings of above-mentioned bolster 64 almost parallels.
There is opening on the top of action bars 68 and forms recess 68a, front side from outer container 1, more particularly, the forward position of the tie breaker chamber 4 after opening from Qianmen 10, shown in the double dot dash line among Fig. 7, the action bars 69 that open-circuit operation is used inserts above-mentioned recess 68a, just can come this action bars 68 of swinging operation by this action bars 69.
Figure 7 shows that operation state before, this moment, action bars 68 was in the state that its end that is provided with above-mentioned recess 68a turns forward, so that aforesaid operations bar 69 inserts easily, the swing arm 65 and the connector 63 that are connected with this action bars 68 by operator link 66 are in the sweptback state in its top, the top of above-mentioned connector 63 is positioned at the position of the conductor 62 that leaves the top, and grounding opening-closing device 6 is in non-ground state.
Under this state, action bars 69 is inserted above-mentioned recess 68a, the line operate of going forward side by side makes its top downward, aforesaid operations bar 68 is swung to counter clockwise direction shown in the arrow among the figure, this swing passes to swing arm 65 by operator link 66, this swing arm 65 is swung to counter clockwise direction with bolster 64, because this swing, above-mentioned connector 63 becomes the state that erects on pedestal 60 as shown in Figure 8, the top of this connector 63 is pressed on the conductor 62 of top, by this conductor 62, above-mentioned earthing conductor 34 and load-side conductor 30 are grounded.Again, the operation of aforesaid grounding opening-closing device 6 is only effective under the state of tie breaker 40 being pulled out from the inside of tie breaker chamber 4.
Securing rod 80 is by frame support bracket 82 supportings of being fixed in outer container 1 part, and can with the face of the base plate 1a almost parallel of outer container 1 in be free to slide to fore-and-aft direction, what end (right part of figure) extended to the strength bar 12a that is fixed at above-mentioned bonnet 12 medial surfaces always thereafter goes up the position slightly.And the front end of securing rod 80 (left end of figure) extend be set to grounding opening-closing device 6 near.On the other hand, an end that connects connecting rod 81 props up top ends at the swing arm 65 of grounding opening-closing device 6 with aforesaid operations connecting rod 66 pivots, and the other end pivot that connects connecting rod 81 props up the leading section at above-mentioned securing rod 80.
In the interlock 8 that constitutes like this, securing rod 80 is along with the swing of the swing arm 65 of grounding opening-closing device 6, by connecting connecting rod 81 by drawing, and slides along fore-and-aft direction thereupon.As shown in Figure 7, when grounding opening-closing device 6 was in non-ground state, swing arm 65 was in the tilt state of top to the back upper place, at this moment, securing rod 80 is pushed to the rear by connecting connecting rod 81, its rear end as previously mentioned, be positioned at bonnet 12 inner faces strength bar 12a go up the position slightly.
As mentioned above, when opening bonnet 12, must carry out it was once drawn upward, remove the operation chimeric with above-mentioned chimeric pin 16,17, but when securing rod 80 is positioned at position shown in Figure 7, when bonnet 12 is upwards lifted, the upper side of strength bar 12a can be run into securing rod 80, stoped it further upwards to lift, so can not remove above-mentioned chimericly, bonnet 12 is limited in closed condition.In addition as previously mentioned, unloading of top bonnet 13 must be unloaded bottom bonnet 12 earlier, so this bonnet 13 also is limited in closed condition.Like this, when grounding opening-closing device 6 was in non-ground state, bonnet 12,13 was locked in closed condition reliably.
On the other hand, when by aforesaid operation, when grounding opening-closing device 6 becomes as shown in Figure 8 ground state, swing arm 65 swings to the position that topple over to the front upper place on its top, because this swing, securing rod 80 is pulled to the place ahead by connecting connecting rod 81, its rear end leave bonnet 12 inboards strength bar 12a above.
Under this state, above-mentioned bonnet 12 is not lifted by securing rod 80 can with hindering upward, because this upwards lifts, can remove and above-mentioned chimeric pin 16,17 chimeric, and then rearward pull out, and can unload from outer container 1.And because bonnet 12 is removed, the bonnet 13 on top also can unload, and can open cable vault 3 and carry out internal overhaul.At this moment, because grounding opening-closing device 6 is in ground state, so, comprise that the internal unit of the cable vault 3 of load-side conductor 30 is no-voltage condition, can carry out above-mentioned upkeep operation safely.
As mentioned above in the present invention, utilize with securing rod 80 and be connected the interlock simple in structure 8 that connecting rod 81 is the formation part, can play reliable interlocking effect bonnet 12,13 as the maintenance cover of cable vault 3.The action of interlock 8 is because be to be undertaken by being connected with the moving part mechanicalness of grounding opening-closing device 6, thus can reliably prevent as the testing result according to cable vault's 3 internal states lock or the existing structure that unlocks open bonnet 12,13 mistakenly.
Again, the formation of interlock 8 is not limited to the formation shown in the above example, so long as with the structure of the moving part mechanicalness of grounding opening-closing device 6 interlock, also can adopt other suitable formations.
For example, also can not use securing rod 8, adopt following structure and replace: at the part that hooks together that is provided with near bonnet 12 medial surface places around the trunnion axis swing, by connection connecting rod 81 this being hooked together part is connected with the swing arm 65 of grounding opening-closing device 6, along with the swing of swing arm 65 is swung the above-mentioned part that hooks together, with the hooked part hook of being located at bonnet 12 the insides, thereby forbid bonnet 12 unlatchings.In addition, in above-mentioned example, as connecting the connecting portion of connecting rod 81 with grounding opening-closing device 6, with swing arm 65 as the connecting portion of operator link 66 be shared, but special-purpose connecting portion can be set in addition also.
In above-mentioned example, when the bonnet 12 that unloads as maintenance cover, by upwards lift promptly be moved upward remove chimeric, but also can by move to Width remove chimeric, in this case, obviously also can lock and unlock with above-mentioned securing rod 8.
As above being described in detail, at the interlocking dress of technical solution of the present invention 1 described enclosed switchboard In putting, be provided with locking device and earthy the connecing of load-side conductor of maintenance cover of the cable vault of load-side conductor The moving part mechanicalness interlock of ground derailing switch, so the action of finishing locking or unlocking is can be reliable Prevent to carry out safely upkeep operation still opening the maintenance cover under the unearthed state.
In the interlock of technical solution of the present invention 2 described enclosed switchboards, cover on it by making maintenance Move and can remove and outer container chimeric to a direction in the installed surface, and be provided with owing to the grounding opening-closing device movable part The action that divides and being pulled by connecting connecting rod, the securing rod with the local butt of maintenance cover limits described inspection Repair the movement of cover, it is constrained to closed condition, so can obtain reliable lock-out state with simple formation.
In addition, in the interlock of technical solution of the present invention 3 described enclosed switchboards, as with locking The member of bar butt utilizes the enhancing muscle that is erected at maintenance cover medial surface, so needn't be in the setting of maintenance cover side Special-purpose member can further be realized the simplification that consists of.
Also have, in the interlock of technical solution of the present invention 4 described enclosed switchboards, as securing rod With the connecting portion that is connected connecting rod, jointly use the connecting portion of the operation usefulness connecting rod of grounding opening-closing device, so, The grounding opening-closing device side needn't increase the special-purpose member that connects usefulness, can receive the effect of further simplified structure, as This etc., the present invention has outstanding effect.
Claims (4)
1. the interlock of an enclosed switchboard comprises: the bus bar side branch conductors that is connected with shared bus; The load-side conductor that is connected with power transmission cable to load; Make two conductors from, the drawer type switching device that closes; Make the grounding opening-closing device of a part of ground connection of described load-side conductor by certain operation; At the interior outer container maintenance cover that can be installed with in the cable vault of described load-side conductor that inside forms and is provided with that above-mentioned part is housed with opening and closing; It is characterized in that,
Also has the locking device that comprises sticking department and connecting portion, described sticking department is located near the described maintenance cover of described outer container inside and when the ground connection of described grounding opening-closing device is removed, described maintenance cover is limited in closed condition, described connecting portion is connected described sticking department with the moving part of described grounding opening-closing device, make that described sticking department is positioned at the position of not limiting described maintenance cover when described grounding opening-closing device ground connection, and described sticking department is positioned at the position of limiting described maintenance cover when described grounding opening-closing device ground connection releasing.
2. the interlock of enclosed switchboard according to claim 1, it is characterized in that, but described maintenance cover is by the chimeric opening of removing with outer container that is that moves of a direction in its installed surface, the sticking department of described locking device be its top and described maintenance cover a part against and limit described mobile securing rod, the connecting portion of described locking device is that described securing rod is connected with the grounding opening-closing device moving part, pushes away or draw this securing rod and the connecting rod that is connected that it is being moved between rest position and the non-rest position at the long axis direction of this securing rod.
3. the interlock of enclosed switchboard according to claim 1 is characterized in that, the top of described securing rod leans with the strength bar that is erected at maintenance cover medial surface.
4. according to the interlock of claim 2 or 3 described enclosed switchboards, it is characterized in that,
Have the action bars of action of operational grounding derailing switch and the operator link of the moving part that is connected described action bars and grounding opening-closing device,
The connection connecting rod of described locking device is connected with described moving part at the connecting portion that described operator link is connected with described moving part.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9198928A JPH1146411A (en) | 1997-07-24 | 1997-07-24 | Interlock device for metal enclosed switchboard |
| JP198928/97 | 1997-07-24 | ||
| JP198928/1997 | 1997-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1206944A CN1206944A (en) | 1999-02-03 |
| CN1154210C true CN1154210C (en) | 2004-06-16 |
Family
ID=16399306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981163858A Expired - Lifetime CN1154210C (en) | 1997-07-24 | 1998-07-24 | Interlocking device for closed electric distribution panel |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH1146411A (en) |
| CN (1) | CN1154210C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208759A (en) * | 2010-03-15 | 2011-10-05 | 株式会社日立制作所 | Switching device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004107519A1 (en) * | 2003-05-30 | 2004-12-09 | Mitsubishi Denki Kabushiki Kaisha | Switch gear and casing for the switch gear |
| CN1765039B (en) * | 2003-05-30 | 2012-09-12 | 三菱电机株式会社 | Switch device |
| JP4587749B2 (en) * | 2004-09-08 | 2010-11-24 | 三菱電機株式会社 | Closed switchboard interlock device |
| WO2008087723A1 (en) * | 2007-01-18 | 2008-07-24 | Mitsubishi Electric Corporation | Enclosed switchboard for power |
| DE102011015066A1 (en) * | 2010-03-25 | 2012-01-12 | Abb Technology Ag | Switchgear for medium voltage with short-circuiting unit |
| JP5122627B2 (en) * | 2010-10-27 | 2013-01-16 | 三菱電機株式会社 | Switchgear |
| KR101469164B1 (en) * | 2014-08-08 | 2014-12-05 | (주)서전기전 | A switching board having earthquake reducing module and door locking device using permanent magnet |
-
1997
- 1997-07-24 JP JP9198928A patent/JPH1146411A/en active Pending
-
1998
- 1998-07-24 CN CNB981163858A patent/CN1154210C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208759A (en) * | 2010-03-15 | 2011-10-05 | 株式会社日立制作所 | Switching device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1146411A (en) | 1999-02-16 |
| CN1206944A (en) | 1999-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100461566C (en) | Interlocking device for closed distribution board | |
| JP2730890B2 (en) | Draw-in and draw-out mechanism of electrical breaker with main and auxiliary circuit | |
| CN1154210C (en) | Interlocking device for closed electric distribution panel | |
| US4926286A (en) | Enclosed switchboard | |
| CN1307758C (en) | Low voltage switchigear comprising locking device for appliance module | |
| CN1118912C (en) | Electric equipment and electric equipment interlocking device | |
| US5036427A (en) | Drawout circuit breaker apparatus | |
| EP0718134A1 (en) | A hatch back door structure for motor vehicles | |
| EP0061846A1 (en) | Hinged pull-down fuse block assembly | |
| US4202028A (en) | Ground and test apparatus with indicia means | |
| US3573559A (en) | Interlocking fuse and switch system for distribution of electric power | |
| US3573561A (en) | Enclosure for pad mounted electrical switchgear having sliding top and end panels | |
| JP3455074B2 (en) | Draw-out type grounding device for switchboard | |
| CN210723923U (en) | Chassis car with program lock and switch cabinet | |
| JPS6341769Y2 (en) | ||
| JP3811934B2 (en) | Control center bus grounding unit | |
| US3573560A (en) | Interlock system for metal enclosed switchgear having a fuse drawer and sliding panels | |
| CN214280513U (en) | Switch cabinet | |
| JPH0682741U (en) | switchboard | |
| CN221328452U (en) | Centrally installed switchgear bus grounding handcart and power distribution network system | |
| JPH0627727Y2 (en) | Door lock device | |
| JPH07118848B2 (en) | Grounding device for drawer type transformer of switchboard | |
| CN217361407U (en) | KYN28A back door interlocking mechanism | |
| JPS6341771Y2 (en) | ||
| CN209496752U (en) | Switch-cabinet grounding interlocking mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20040616 |