CN105449568A - Interlocking device for valve and middle door of switchgear - Google Patents

Interlocking device for valve and middle door of switchgear Download PDF

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Publication number
CN105449568A
CN105449568A CN201510840860.0A CN201510840860A CN105449568A CN 105449568 A CN105449568 A CN 105449568A CN 201510840860 A CN201510840860 A CN 201510840860A CN 105449568 A CN105449568 A CN 105449568A
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CN
China
Prior art keywords
plate
interlock
door
valve
arm
Prior art date
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Granted
Application number
CN201510840860.0A
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Chinese (zh)
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CN105449568B (en
Inventor
王海燕
马明乐
朱彦卿
蒋成博
潘明
朱苛娄
弯晓芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Original Assignee
State Grid Corp of China SGCC
Pinggao Group Co Ltd
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Application filed by State Grid Corp of China SGCC, Pinggao Group Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201510840860.0A priority Critical patent/CN105449568B/en
Publication of CN105449568A publication Critical patent/CN105449568A/en
Application granted granted Critical
Publication of CN105449568B publication Critical patent/CN105449568B/en
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00Switchgear having carriage withdrawable for isolation
    • H02B11/12Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
    • H02B11/127Withdrawal mechanism
    • H02B11/133Withdrawal mechanism with interlock

Abstract

The invention discloses an interlocking device for a valve and a middle door of a switchgear, comprising a transmission shaft, a support and a locking device. The transmission shaft is provided with a power input terminal connected to the output terminal of the valve; the transmission shaft is provided with a transmission shaft and a locking arm; the support is provided with an interlocking plate through rotation; the support is provided with a bending plate through hinging; the front part and the rear part of the rotation axis of the interlocking plate are provided with hinging parts and spring bolt part; the locking device comprises a push plate and a locking plate; the front end of the locking plate is a locking end; the front end of the push plate is a stop end; when the valve is in an open position, the locking end is in position limiting cooperation with the spring bole; the stop end is in pushing cooperation with a bending plate; when the valve is in a closing position, the spring bole relives the position limiting on the locking end; the pushing plate relives the position limiting on the bending plate after the locking device moves backwardly; the bending plate is reset under the action of the reset member and performs stop rotation limiting on the locking arm of the transmission shaft. The invention realizes the function that the valve cannot be mistakenly opened when the middle door is opened, and the reliability of the linkage is high.

Description

The interlock of a kind of switch cabinet shutter and middle door
Technical field
The present invention relates to switch cubicle manufacturing technology field, be specifically related to the interlock of a kind of switch cabinet shutter and middle door.
Background technology
In switch cubicle manufacturing technology field, in most switch cubicle corresponding to door is circuit breaker cart room, when circuit breaker cart is advanced to service position from the isolated location in switch cubicle, circuit breaker cart drives valve mechanism to be opened by the sliding door outside contact box, the moving contact on circuit breaker cart is allowed to be inserted into fixed contact in contact box, when circuit breaker cart is moved out to isolated location or switch cubicle is outer, sliding door can rely on the effect of valve mechanism spring force or valve self gravitation and close; Generally interlock is not established between door and circuit breaker cart in traditional switch cubicle, no matter in the whether in running order or isolation switch cubicle of circuit breaker cart, door can arbitrarily be opened, if artificially arbitrarily open cabinet door when circuit breaker cart is in running order, Danger Electric shock risk will be there is, to be short-circuited fault once now encounter circuit breaker cart room, the electric arc that circuit breaker cart room produces and gases at high pressure will jeopardize personal safety, there is potential safety hazard.
For the problems referred to above, Chinese patent CN201174532Y(authorized announcement date is on December 31st, 2008) disclose the interlock of a kind of power distribution cabinet valve and door-plate, this interlock comprises connecting rod, transmission is won in succession, dead bolt is won in succession, locking device, connecting rod is fixed on valve, transmission rotation of winning in succession is arranged on cabinet, and dead bolt is won in succession and is connected on cabinet.Locking device is on middle reveal face.Specific works process is: after handcart turnover, and connecting rod drives valve to run downwards, and connecting rod drives transmission connecting plate one end to rotate counterclockwise simultaneously, one end that the other end that transmission is won in succession drives dead bolt to win in succession rotates clockwise, the hook end that dead bolt is won in succession falls, and go out of lock device, and cabinet door can be opened.A high-tension electricity is isolated by valve now, and operating personnel open cabinet door, directly can not face a high-tension electricity.When valve does not fall, connecting rod, transmission are won in succession and dead bolt is won in succession all remains static, and the other end that dead bolt is won in succession is locked in locking device, and operating personnel cannot open cabinet door, improves the fail safe of distribution to a certain extent.But this interlock also exists some problems, such as, when cabinet door is in open mode, valve still can be opened, and can not realize door-closing operation, when there is misoperation, there is certain potential safety hazard.
Summary of the invention
The object of this invention is to provide the interlock of a kind of switch cabinet shutter and middle door, with solve existing interlock under middle door open mode, valve can also be opened by mistake, the technical problem that security reliability is low.
In order to realize above object, the technical scheme of the interlock of breaker in middle cabinet valve of the present invention and middle door is as follows: the interlock of switch cabinet shutter and middle door comprises the power transmission shaft that axis extends in left-right direction, support, locking device, described power transmission shaft has the power intake for being connected with the output of valve, described power transmission shaft is provided with the transmission arm therewith rotated, lockup arm, described support is rotatably equipped with interlock plate, the pivot center of interlock plate and the axis being parallel of described power transmission shaft, described support is also articulated and connected and is provided with bent plate, the hinge axes of described bent plate and support along the vertical direction, described interlock plate is respectively equipped with articulated section in the both sides, front and back of its pivot center, dead bolt portion, described articulated section is flexibly connected with described transmission arm, described locking device comprises push pedal and lockplate, the front end of described lockplate is snap close end, the front end of described push pedal is block end, described lockplate, the rear end of push pedal is the link for being connected with middle door, valve be in open time, described snap close end coordinates to stop that lockplate moves backward with described dead bolt portion is spacing, described block end coordinates with bent plate pushing tow, when valve is in close stance, it is spacing that the dead bolt portion of interlock plate removes the snap close end of lockplate, push pedal is removed the pushing tow of bent plate spacing after locking device moves backward, bent plate rotates and to reset and to carry out spline to the lockup arm on described power transmission shaft spacing under the effect of return unit, described return unit is arranged on the bracket.
Power transmission shaft is provided with input connecting lever, and described input connecting lever forms described power intake.
Interlock plate is V-shape, and described articulated section is provided with elongated slot, and one end away from power transmission shaft of described transmission arm is provided with sliding part, and described sliding position also can slide along the length direction of elongated slot in described elongated slot under the driving of power transmission shaft.
Elongated slot is long groove through in left-right direction, and described sliding part is formed by the bearing pin be located on transmission arm.
Support is also provided with the locking gear shaft that axis is parallel with the pivot center of described interlock plate, described locking gear shaft be used for valve be in open time spacing to interlock plate spline.
Interlock plate comprises interlock plate body, and described interlock plate body is provided with projection, and protruding protrusion direction is vertical with the pivot center direction of interlock plate, described in convex to form described dead bolt portion.
Lockplate comprises the lockplate body extended along the longitudinal direction, and the front end of lockplate body is provided with towards a left side or the convex section towards right extension, and described convex section forms described snap close end.
Described bent plate comprises the first plate arm, the second plate arm, described first plate arm, the V-shaped layout of the second plate arm, the block end of push pedal is provided with open slot, valve be in open time, a part for first plate arm is positioned at described open slot, when valve is in close stance, the second plate arm rotates and to reset and to carry out spline to the lockup arm on described power transmission shaft spacing under the effect of return unit.
Described return unit is the torsion spring be located in the rotating shaft of bent plate.
Beneficial effect of the present invention: when interlock of the present invention uses on concrete switch cubicle, when valve is in and opens, the snap close end on lockplate is caught on by the dead bolt portion on interlock plate, limited.Under valve open mode, middle door can not be opened.When valve is in close stance, when valve is about to close, output campaign is reached power intake, promotes power transmission shaft, transmission arm rotates, drive interlock plate to turn an angle.Now, it is spacing that interlock plate relieves lockplate, and locking device is unlocked, and middle door can outwards move and be opened.When middle door has just opened certain distance, push pedal has no longer contacted compressing bent plate, under the effect of return unit, bent plate turns to another location, if attempt opening valve, then lockup arm can be stopped by bent plate, and the power acted on bent plate is parallel to the rotating shaft of bent plate, moment perseverance is zero, unless bent plate destroys, otherwise power transmission shaft can not rotate, namely valve cannot be opened, when achieving middle door open mode, can not valve be opened, namely must door-closing operation.On the function basis of interlock of the present invention door in the closedown valve of prior art just can be opened, achieve when Zhong Men opens, the function that valve can not be opened, prevent misoperation from opening valve, fail safe, Interlock Reliability are higher.
Accompanying drawing explanation
Fig. 1 is the structural representation (state one) of the embodiment of the interlock of switch cabinet shutter of the present invention and middle door;
Fig. 2 is the structural representation (state two) of the embodiment of the interlock of switch cabinet shutter of the present invention and middle door;
Fig. 3 is the structural representation (state three) of the embodiment of the interlock of switch cabinet shutter of the present invention and middle door.
Embodiment
The embodiment of the interlock of switch cabinet shutter of the present invention and middle door: as Figure 1-3, this interlock, comprise power transmission shaft 2, support 9, locking device that axis extends in left-right direction, power transmission shaft 2 has the power intake for being connected with the output of valve, and power transmission shaft is provided with the transmission arm 4, the lockup arm 3 that therewith rotate.Power transmission shaft is provided with input connecting lever 1, and input connecting lever 1 forms described power intake.
Support 9 is rotatably equipped with interlock plate 5, the pivot center of interlock plate 5 and the axis being parallel of power transmission shaft 2, support 9 is also articulated and connected and is provided with bent plate 7, and the hinge axes of bent plate 7 and support 9 along the vertical direction.Interlock plate 5 is respectively equipped with articulated section 51, dead bolt portion 52 in the both sides, front and back of its pivot center, and articulated section 51 is flexibly connected with transmission arm.Interlock plate 5 is in V-shape, and articulated section 51 is provided with elongated slot, and one end away from power transmission shaft of transmission arm 4 is provided with sliding part, and sliding position also can slide along the length direction of elongated slot in elongated slot under the driving of power transmission shaft.Elongated slot is long groove through in left-right direction, and sliding part is formed by the bearing pin 12 be located on transmission arm.Interlock plate 5 comprises interlock plate body, and interlock plate body is provided with projection, and protruding protrusion direction is vertical with the pivot center direction of interlock plate, convexes to form described dead bolt portion.Support 9 is also provided with the locking gear shaft 6 that axis is parallel with the pivot center of interlock plate 5, locking gear shaft be used for valve be in open time spacing to interlock plate 5 spline.
Locking device comprises push pedal 10 and lockplate 11, the front end of lockplate 11 is snap close end 13, and the front end of push pedal 10 is block end 16, and lockplate 11 comprises the lockplate body extended along the longitudinal direction, the front end of lockplate body is provided with the convex section towards a left side, and convex section forms described snap close end 13.The rear end of lockplate 11, push pedal 10 is for the link with middle door releasable connection, is respectively link 14, lower link 15, and upper and lower link is formed by the connecting plate bent to the right, and upper and lower link is equipped with bolt hole.The link of lockplate 11 valve be in open time, snap close end 13 coordinates to stop that lockplate 11 moves backward with dead bolt portion 52 is spacing, block end 16 coordinates with bent plate 7 pushing tow, when valve is in close stance, it is spacing that the dead bolt portion 52 of interlock plate 5 removes the snap close end 13 of lockplate 11, push pedal 10 is removed the pushing tow of bent plate 7 spacing after locking device moves backward, bent plate 7 rotates and to reset and to carry out spline to the lockup arm on described power transmission shaft spacing under the effect of return unit, and return unit is the torsion spring 8 be arranged on support.Torsion spring 8 is arranged on the rotation axis of bent plate.
Bent plate 7 comprises the first plate arm 71, second plate arm 72, first plate arm, the V-shaped layout of the second plate arm, the block end 16 of push pedal 10 is provided with open slot, valve be in open time, a part for first plate arm 71 is positioned at open slot, when valve is in close stance, the second plate arm 72 rotates and to reset and to carry out spline to the lockup arm 3 on power transmission shaft spacing under the effect of return unit.
When interlock of the present invention uses on concrete switch cubicle, as shown in Figure 1, valve is opened, middle door closure state (valve is in and opens position), and the snap close end 13 on lockplate 11 is caught on by the dead bolt portion 52 on interlock plate 5, limited.In addition, when attempting to open middle door, lockplate 11 will have the tendency of outside movement, produces anticlockwise torque to interlock plate 5, forces interlock plate to rotate, but interlock plate 5 is stopped by locking gear shaft 6, cannot rotate.Under valve open mode, middle door can not be opened.As shown in Figure 2, valve is in closed condition, Zhong Men is in closed condition, and when valve is about to close, output campaign is reached input connecting lever 1, promotion power transmission shaft 2, transmission arm 4 rotate, and drive interlock plate 5 to rotate clockwise certain angle.Now, it is spacing that interlock plate 5 relieves lockplate 11, and locking device is unlocked, and middle door can outwards move and be opened.When opening valve from Fig. 2 state, when just opening valve, lockplate 11, by counter-rotation, pins by transmission arm 4.As shown in Figure 3, valve is closed, middle door open mode, and when middle door has just opened certain distance, push pedal 10 no longer contacts compressing bent plate 7, and under the effect of reduction torsion spring 8, bent plate turns to state shown in Fig. 3, and bent plate 7 is positioned at the below of lockup arm 3.Now, if attempt opening valve, then lockup arm 3 can be stopped by the second plate arm 72 of bent plate 7, and the power acted on bent plate 7 is parallel to the rotating shaft of bent plate, and moment perseverance is zero, unless bent plate destroys, otherwise power transmission shaft can not rotate, namely valve cannot be opened, when achieving middle door open mode, can not valve be opened, namely must door-closing operation.
In other embodiments, the power intake on power transmission shaft can be formed by a part for power transmission shaft, and also the form of not necessarily connecting lever, may also be the disk be coaxially arranged on power transmission shaft, disk is provided with eccentric orfice.
In other embodiments, the elongated slot on interlock plate can not be also groove, is arranged to the groove of similar microscler blind hole; In addition, sliding part also can be arranged to slide block.
In other embodiments, snap close end on lockplate also can change the U-type groove or annular groove that are arranged on lockplate front end into, correspondingly, when valve is in open mode, in the U-type groove that the dead bolt portion of interlock plate is inserted into lockplate or annular groove, to carry out spacing to lockplate motion backward.
In other embodiments, the lockplate in locking device and push pedal can be wholely set, and are then connected on middle door, or also can split arrange, lockplate, push pedal are separately connected on middle door.
In other embodiments, return unit also can adopt other spring to replace the torsion spring in the present embodiment, such as back-moving spring is set on support, one end of back-moving spring is fixed on support, the other end is connected on the second connecting lever, when valve is in open mode, back-moving spring is in extended state.By the time close valve, when middle door is opened, push pedal no longer pushing tow spacing bent plate time, under the effect of back-moving spring, bent plate resets and rotates.

Claims (9)

1. the interlock of switch cabinet shutter and middle door, it is characterized in that: comprise the power transmission shaft that axis extends in left-right direction, support, locking device, described power transmission shaft has the power intake for being connected with the output of valve, described power transmission shaft is provided with the transmission arm therewith rotated, lockup arm, described support is rotatably equipped with interlock plate, the pivot center of interlock plate and the axis being parallel of described power transmission shaft, described support is also articulated and connected and is provided with bent plate, the hinge axes of described bent plate and support along the vertical direction, described interlock plate is respectively equipped with articulated section in the both sides, front and back of its pivot center, dead bolt portion, described articulated section is flexibly connected with described transmission arm, described locking device comprises push pedal and lockplate, the front end of described lockplate is snap close end, the front end of described push pedal is block end, described lockplate, the rear end of push pedal is the link for being connected with middle door, valve be in open time, described snap close end coordinates to stop that lockplate moves backward with described dead bolt portion is spacing, described block end coordinates with bent plate pushing tow, when valve is in close stance, it is spacing that the dead bolt portion of interlock plate removes the snap close end of lockplate, push pedal is removed the pushing tow of bent plate spacing after locking device moves backward, bent plate rotates and to reset and to carry out spline to the lockup arm on described power transmission shaft spacing under the effect of return unit, described return unit is arranged on the bracket.
2. the interlock of switch cabinet shutter according to claim 1 and middle door, is characterized in that: described power transmission shaft is provided with input connecting lever, and described input connecting lever forms described power intake.
3. the interlock of switch cabinet shutter according to claim 1 and middle door, it is characterized in that: described interlock plate is V-shape, described articulated section is provided with elongated slot, one end away from power transmission shaft of described transmission arm is provided with sliding part, and described sliding position also can slide along the length direction of elongated slot in described elongated slot under the driving of power transmission shaft.
4. the interlock of switch cabinet shutter according to claim 3 and middle door, is characterized in that: described elongated slot is long groove through in left-right direction, and described sliding part is formed by the bearing pin be located on transmission arm.
5. the interlock of switch cabinet shutter according to claim 3 and middle door, it is characterized in that: described support is also provided with the locking gear shaft that axis is parallel with the pivot center of described interlock plate, described locking gear shaft be used for valve be in open time spacing to interlock plate spline.
6. the interlock of switch cabinet shutter according to claim 3 and middle door, it is characterized in that: described interlock plate comprises interlock plate body, described interlock plate body is provided with projection, and protruding protrusion direction is vertical with the pivot center direction of interlock plate, described in convex to form described dead bolt portion.
7. the interlock of switch cabinet shutter according to claim 6 and middle door, it is characterized in that: described lockplate comprises the lockplate body extended along the longitudinal direction, the front end of lockplate body is provided with towards a left side or the convex section towards right extension, and described convex section forms described snap close end.
8. the interlock of the switch cabinet shutter according to claim 1 to 7 any one and middle door, it is characterized in that: described bent plate comprises the first plate arm, the second plate arm, described first plate arm, the V-shaped layout of the second plate arm, the block end of push pedal is provided with open slot, valve be in open time, a part for first plate arm is positioned at described open slot, and when valve is in close stance, the second plate arm rotates and to reset and to carry out spline to the lockup arm on described power transmission shaft spacing under the effect of return unit.
9. the interlock of switch cabinet shutter according to claim 8 and middle door, is characterized in that: described return unit is the torsion spring be located in the rotating shaft of bent plate.
CN201510840860.0A 2015-11-27 2015-11-27 A kind of interlock of switch cabinet shutter and middle door Active CN105449568B (en)

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CN105449568B CN105449568B (en) 2018-07-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110409141A (en) * 2018-04-28 2019-11-05 无锡小天鹅电器有限公司 For the locking device of lid, the superstructure of laundry facilities and laundry facilities
CN111192775A (en) * 2019-12-20 2020-05-22 天津平高智能电气有限公司 Switching device and locking interlocking device thereof

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US20040174661A1 (en) * 2003-03-06 2004-09-09 Gray Buell E. Low cost safety switch interlock defeat operator
JP2006034023A (en) * 2004-07-20 2006-02-02 Fuji Electric Fa Components & Systems Co Ltd Locking device for drawer type power distribution apparatus
CN200953292Y (en) * 2006-09-26 2007-09-26 上海中科电气(集团)有限公司 High-voltage switch cabinet anti-misoperating interlocking device
CN102005320A (en) * 2010-12-02 2011-04-06 天水长城开关厂有限公司 Interlocking device between electric grounding switch and circuit breaker
CN201820662U (en) * 2010-09-26 2011-05-04 万控(天津)电气有限公司 Lock hook structure for interlocking device at rear door of high-tension switch cabinet
CN204361553U (en) * 2015-01-12 2015-05-27 广东电网有限责任公司电力科学研究院 A kind of handcart interlock on high pressure complete set of equipments
CN205282966U (en) * 2015-11-27 2016-06-01 平高集团有限公司 Interlock of cubical switchboard valve and well door

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040174661A1 (en) * 2003-03-06 2004-09-09 Gray Buell E. Low cost safety switch interlock defeat operator
JP2006034023A (en) * 2004-07-20 2006-02-02 Fuji Electric Fa Components & Systems Co Ltd Locking device for drawer type power distribution apparatus
CN200953292Y (en) * 2006-09-26 2007-09-26 上海中科电气(集团)有限公司 High-voltage switch cabinet anti-misoperating interlocking device
CN201820662U (en) * 2010-09-26 2011-05-04 万控(天津)电气有限公司 Lock hook structure for interlocking device at rear door of high-tension switch cabinet
CN102005320A (en) * 2010-12-02 2011-04-06 天水长城开关厂有限公司 Interlocking device between electric grounding switch and circuit breaker
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CN205282966U (en) * 2015-11-27 2016-06-01 平高集团有限公司 Interlock of cubical switchboard valve and well door

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110409141A (en) * 2018-04-28 2019-11-05 无锡小天鹅电器有限公司 For the locking device of lid, the superstructure of laundry facilities and laundry facilities
CN110409141B (en) * 2018-04-28 2021-08-10 无锡小天鹅电器有限公司 Locking device for cover body, upper cover structure of laundry equipment and laundry equipment
CN111192775A (en) * 2019-12-20 2020-05-22 天津平高智能电气有限公司 Switching device and locking interlocking device thereof
CN111192775B (en) * 2019-12-20 2021-10-29 天津平高智能电气有限公司 Switching device and locking interlocking device thereof

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