CN106159773A - Grounding switch interlocking mechanism for switch cabinet and method of work thereof - Google Patents
Grounding switch interlocking mechanism for switch cabinet and method of work thereof Download PDFInfo
- Publication number
- CN106159773A CN106159773A CN201610678439.9A CN201610678439A CN106159773A CN 106159773 A CN106159773 A CN 106159773A CN 201610678439 A CN201610678439 A CN 201610678439A CN 106159773 A CN106159773 A CN 106159773A
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- China
- Prior art keywords
- ground cutter
- interlocking
- hole
- plate
- switch
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
Abstract
The present invention relates to a kind of grounding switch interlocking mechanism for switch cabinet and method of work thereof, including cabinet and connect firmly the handcart advancing mechanism at cabinet, the side of described handcart advancing mechanism is provided with bent plate, the side opening of described bent plate is provided with the interlocking hole in order to coordinate with handcart advancing mechanism, the front upper portion of described bent plate offers the first ground cutter handle hole, the inner side of described bent plate is provided with interlock plate moving up and down, the side of described interlock plate connects with the side of bent plate, the front upper portion of described interlock plate offers the second ground cutter handle hole, the lower section of described second ground cutter handle hole is provided through interlock plate and stretches out the pressing plate of the first ground cutter handle hole, the rear of described pressing plate is provided with to drive the ground cutter operation axle of earthed switch, it is connected by brake cable between described ground cutter operation axle and interlock plate.The present invention is reasonable in design, low cost, and when earthed switch closes a floodgate, circuit breaker cart cannot push testing position and operating position；When circuit breaker cart pushes, earthed switch cannot close a floodgate.
Description
Technical field:
The present invention relates to a kind of grounding switch interlocking mechanism for switch cabinet and method of work thereof.
Background technology:
Being distinctly claimed to adopt an effective measure in the anti-measure of switch cubicle five at present prevents the charged earthed switch that closes, earthed switch from closing a floodgate
Time close circuit breaker and on-load switch, to ensure the use safety of switch cubicle.Existing interlocking device for switch cabinet grounding switch is tied
Structure is complicated, production cost is high, and the bent plate on switch cubicle is yielding, affects reliability and the stability of earthed switch interlocking.
Summary of the invention:
It is an object of the invention to for above weak point, it is provided that a kind of grounding switch interlocking mechanism for switch cabinet and work side thereof
Method, not only reasonable in design, production cost are low, and the most convenient.
The present invention solves the scheme that technical problem used, a kind of grounding switch interlocking mechanism for switch cabinet, including cabinet,
The inner bottom surface of described cabinet is provided with guide rail, and described guide rail is provided with circuit breaker cart, and the outside of described circuit breaker cart is provided with
Connect firmly the handcart advancing mechanism at cabinet, be connected by screw mandrel between described handcart advancing mechanism and circuit breaker cart, described hands
The side of car propulsive mechanism is provided with bent plate, and the side opening of described bent plate is provided with the interlocking hole in order to coordinate with handcart advancing mechanism,
The front upper portion of described bent plate offers the first ground cutter handle hole, and the inner side of described bent plate is provided with interlock plate moving up and down,
The side of described interlock plate connects with the side of bent plate, and the front upper portion of described interlock plate offers the second ground cutter handle hole, institute
The lower section stating the second ground cutter handle hole is provided through interlock plate and stretches out the pressing plate of the first ground cutter handle hole, the rear of described pressing plate
It is provided with to drive the ground cutter operation axle of earthed switch, is connected by brake cable between described ground cutter operation axle and interlock plate.
Further, the lower end of above-mentioned interlock plate is provided with the first crimp having brake cable lockhole, and interlock plate is additionally provided with
The second crimp connected with pressing plate, the side opening of described interlock plate is provided with in order to the strip groove being slidably connected with bent plate.
Further, it is connected between top and the mounting angle plate above it of above-mentioned interlock plate and has spring.
Further, cutter operation axle in above-mentioned ground is provided with cam, and described cam is fixing with the head of brake cable to be connected, described
The lower section of ground cutter operation axle is provided with to support the first bracing frame of brake cable head, the afterbody of described brake cable and the first crimp
Fixing connection, the lower section of described first crimp is provided with to support the second bracing frame of brake cable afterbody.
Further, the front end of above-mentioned handcart advancing mechanism be provided with the center with screw mandrel just to shake inlet hole, described in shake into
The upper end in hole is provided with catch, described in shake the left and right sides of inlet hole and be arranged with handcart handle, described handcart handle is near bent plate end
Being provided with the ground cutter interlocking handle that can move left and right, cutter interlocking handle in described ground is provided with to insert the dead bolt in interlocking hole.
Further, above-mentioned pressing plate is L-shaped, and the front end of pressing plate is provided with projection, and described projection passes the first ground cutter handle hole,
Described first handle hole be symmetrically arranged on two with the groove in order to coordinate with the projection of pressing plate up and down.
Further, the left and right sides within above-mentioned cabinet is arranged with the link of vertically placement, and said two connects
Frame is fixing with the left and right sides of handcart advancing mechanism respectively to be connected.
The method of work of a kind of grounding switch interlocking mechanism for switch cabinet of the present invention, comprises the steps of:
(1) circuit breaker cart interlocking: when circuit breaker cart is positioned at testing position, stirs to the right ground cutter interlocking handle and makes dead bolt insert
Interlocking hole, lower pressure catch exposes and shakes inlet hole, shakes to insert into handle and shakes inlet hole and drive screw mandrel to rotate, drives circuit breaker cart to move；
(2) circuit breaker cart release time: earthed switch close a floodgate, described ground cutter operate axle band moving cam rotate clockwise, cam to
On pull brake cable, be pulled down to interlock plate to cover interlocking hole by brake cable, described dead bolt cannot insert interlocking hole, it is achieved connects
Ground switch close a floodgate time, circuit breaker cart cannot shake into；
(3), when circuit breaker cart pushes: grounding switch tripping, stir to the right ground cutter interlocking handle and make dead bolt insert interlocking hole, under
Belling block, drives interlock plate to move down by pressing plate, and dead bolt withstands the lower end of interlock plate, makes the first ground cutter handle hole and the second ground cutter
Handle hole cannot align, and cutter operation handle in ground cannot pass the first ground cutter handle hole and the second ground cutter handle hole, it is achieved chopper
When handcart pushes, earthed switch cannot close a floodgate.
Compared with prior art, the method have the advantages that present configuration is reasonable in design, low cost, when connecing
When ground switch closes a floodgate, circuit breaker cart cannot push testing position and operating position；The earthed switch when circuit breaker cart pushes
Cannot close a floodgate.
Accompanying drawing illustrates:
Fig. 1 is first organigram of the present invention；
Fig. 2 is the A-A sectional view of Fig. 1；
Fig. 3 is the D structure schematic diagram of the present invention；
Fig. 4 is the organigram of interlock plate；
Fig. 5 is the organigram of pressing plate.
In figure:
1-cabinet；2-circuit breaker cart；3-guide rail；4-bent plate；401-interlocks hole；402-the first ground cutter handle hole；5-interlock plate；
501-the second ground cutter handle hole；502-the first crimp；503-the second crimp；6-pressing plate；7-handcart advancing mechanism；701-shake into
Hole；702-handcart handle；703-ground cutter interlocking handle；704-dead bolt；8-ground cutter operation axle；9-brake cable；10-cam；11-
One bracing frame；12-the second bracing frame；13-link, 14-spring；15-mounting angle plate.
Detailed description of the invention:
The present invention will be further described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
As shown in Fig. 1 ~ 5, one grounding switch interlocking mechanism for switch cabinet of the present invention, including cabinet 1, described cabinet 1 interior
Bottom surface, portion is provided with two parallel guide rails 3, and described guide rail 3 is provided with circuit breaker cart 2, and the outside of described circuit breaker cart 2 is provided with
Connecting firmly the handcart advancing mechanism 7 at cabinet 1, described handcart advancing mechanism 7 is connected by screw mandrel between circuit breaker cart 2, institute
The side stating handcart advancing mechanism 7 is provided with bent plate 4, and the side opening of described bent plate 4 is provided with in order to coordinate with handcart advancing mechanism 7
Interlocking hole 401, the front upper portion of described bent plate 4 offers the first ground cutter handle hole 402, and the inner side of described bent plate 4 is provided with and can go up
The interlock plate 5 of lower movement, the side of described interlock plate 5 connects with the side of bent plate 4, and the front upper portion of described interlock plate 5 is offered
The second ground cutter handle hole 501, the lower section of described second ground cutter handle hole 501 is had to be provided through interlock plate 5 and stretch out the first ground cutter
The pressing plate 6 of handle hole 402, the rear of described pressing plate 6 is provided with to drive the ground cutter operation axle 8 of earthed switch, and described ground cutter is grasped
Making to be connected by brake cable 9 between axle 8 with interlock plate 5, when circuit breaker cart 2 is released along screw mandrel, earthed switch closes a floodgate,
Ground cutter operation axle 8 drives interlock plate 5 to move down and cover interlocking hole 401 by brake cable 9 so that handcart advancing mechanism 7 cannot be complete
Become interlocking and drive screw mandrel motion, it is achieved earthed switch close a floodgate time, circuit breaker cart 2 cannot shake into；When circuit breaker cart 2 is along silk
When bar pushes, grounding switch tripping, handcart advancing mechanism normally works, by handcart when promoting interlock plate 5 to move down by pressing plate 6
Propulsive mechanism spacing, the first ground cutter handle hole 402 and the second ground cutter handle hole 501 cannot align, and ground cutter operation handle cannot
Act on ground cutter operation axle 8, it is achieved when circuit breaker cart 2 pushes, earthed switch cannot close a floodgate.
In the present embodiment, the lower end of above-mentioned interlock plate 5 is provided with the first crimp 502 having brake cable lockhole, on interlock plate 5
It is additionally provided with the second crimp 503 connected with pressing plate 6, the upper surface of the i.e. second crimp 503 and the lower surface of pressing plate 6 to contact, when
When pushing down on pressing plate 6, pressing plate 6 can drive interlock plate 5 to move down.
In the present embodiment, the side opening of above-mentioned interlock plate 5 is provided with in order to the strip groove being slidably connected with bent plate 4, i.e. bent plate 4
Side be connected with interlock plate 5, when interlock plate 5 pulling or the effect of pressing plate 6 by brake cable 9 through strip groove by bolt
Time, can be moved up and down along bolt by strip groove, it is to avoid interlock plate 5 moves down the deviation of rear position, shelter from interlocking hole the most completely
401, when causing earthed switch to close a floodgate, circuit breaker cart 2 still can shake into.
In the present embodiment, it is connected between top and the mounting angle plate 15 above it of above-mentioned interlock plate 5 and has spring 14, in order to
After interlock plate 5 moves down, the elastic force of spring 14 is relied on to pull up interlock plate 5, it is achieved the reset of interlock plate 5.
In the present embodiment, the first ground cutter handle hole 402 is parallel with the second ground cutter handle hole 501, and circuit breaker cart 2 pushes
Time, the second ground cutter handle hole 501 is positioned at the top of the first ground cutter handle hole 402 and forms dislocation so that operation handle cannot act on
Axle 8 is operated, it is ensured that when circuit breaker cart 2 pushes, earthed switch cannot close a floodgate in ground cutter.
In the present embodiment, cutter operation axle 8 in above-mentioned ground is provided with cam 10, and the head of described cam 10 and brake cable 9 is fixed
Connecting, the lower section of described ground cutter operation axle 8 is provided with to support the first bracing frame 11 of brake cable 9 head, described brake cable 9
Afterbody and the first fixing connection of crimp 502, the lower section of described first crimp 502 is provided with to support the second of brake cable 9 afterbody
Steel wire in bracing frame 12, i.e. brake cable 9 pulls interlock plate 5 to move down under the drive of cam 10, the steel wire protection set of brake cable 9
It is fixed between the first bracing frame 11 and the second bracing frame 12, in order to ensure that brake cable 9 can work reliably.
In the present embodiment, the front end of above-mentioned handcart advancing mechanism 7 be provided with the center with screw mandrel just to shake inlet hole 701, institute
State and shake the upper end of inlet hole 701 and be provided with catch, described in shake the left and right sides of inlet hole 701 and be arranged with handcart handle 702, described handcart
Handle 702 is provided with the ground cutter interlocking handle 703 that can move left and right near bent plate 4 end, described ground cutter interlock handle 703 be provided with in order to
Inserting the dead bolt 704 in interlocking hole 401, i.e. when stirring to the right ground cutter interlocking handle 703, dead bolt 704 is at ground cutter interlocking handle 703
Drive under stretch out 7, and insert interlocking hole 401, it is achieved the interlocking of circuit breaker cart 2, press down catch, interlocking frame 7 exposes and shakes
Inlet hole 701, shakes to insert into handle and shakes inlet hole 701 and drive screw mandrel to rotate, and then realize the movement of circuit breaker cart 2.
In the present embodiment, above-mentioned pressing plate 6 is L-shaped, and the front end of pressing plate 6 is provided with projection, and described projection is through the first ground cutter behaviour
Make hole 402, described first handle hole 402 be symmetrically arranged on two with the groove in order to coordinate with the projection of pressing plate 6, i.e. ground connection up and down
Belling block need to be descended when switch is to be operated, drive interlock plate 5 to move down by pressing plate 6, make the second handle hole 501 and the first handle hole
402 alignment, operation handle could be also cross the first ground cutter handle hole 402 and the second ground cutter handle hole 501 and act on ground cutter
Operation axle 8.
In the present embodiment, the left and right sides within above-mentioned cabinet 1 is arranged with the link 13 of vertically placement, said two
Link 13 is fixing with the left and right sides of handcart advancing mechanism 7 respectively to be connected.
The method of work of a kind of grounding switch interlocking mechanism for switch cabinet of the present invention, comprises the steps of:
(1) circuit breaker cart interlocking: when circuit breaker cart 2 is positioned at testing position, stirs to the right ground cutter interlocking handle 703 and makes lock
Tongue 704 inserts interlocking hole 401, and lower pressure catch exposes and shakes inlet hole 701, shakes to insert into handle and shakes inlet hole 701 and drive screw mandrel to rotate, enters
And drive circuit breaker cart 2 to move, after circuit breaker cart 2 shakes separating test position, dead bolt 704 is locked in extended position cannot
Regain, only circuit breaker cart 2 is return testing position and takes off and shake after handle, shake the catch at inlet hole 701 the most upwards
Resetting, dead bolt 704 could be regained to the left；
(2), when circuit breaker cart is released: earthed switch closes a floodgate, cutter operation axle 8 band moving cam 10 in described ground rotates clockwise, cam
10 pull up brake cable 9, are pulled down to cover interlocking hole 401 by interlock plate 5 by brake cable 9, and described dead bolt 704 cannot insert
Interlocking hole 401, i.e. cutter interlocking handle 703 cannot be stretched out, and cause catch to press down, and then shake and cannot act on silk into handle
Bar, it is achieved earthed switch close a floodgate time, circuit breaker cart 2 cannot shake into；
(3), when circuit breaker cart pushes: grounding switch tripping, stir to the right ground cutter interlocking handle 703 and make dead bolt 704 insert interlocking
Hole 401, lower belling block, drive interlock plate 5 to move down by pressing plate 6, dead bolt 704 withstands the lower end of interlock plate 5, limits interlock plate 5
Move down, make the first ground cutter handle hole 402 and the second ground cutter handle hole 501 to align, ground cutter operation handle cannot be through the
One ground cutter handle hole 402 and the second ground cutter handle hole 501 also act on ground cutter operation axle 8, it is achieved when circuit breaker cart 2 pushes,
Earthed switch cannot close a floodgate.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modify, all should belong to the covering scope of the present invention.
Claims (8)
1. a grounding switch interlocking mechanism for switch cabinet, it is characterised in that: including cabinet, the inner bottom surface of described cabinet is provided with to be led
Rail, described guide rail is provided with circuit breaker cart, and the outside of described circuit breaker cart is provided with and connects firmly the handcart advancing mechanism at cabinet,
Being connected by screw mandrel between described handcart advancing mechanism and circuit breaker cart, the side of described handcart advancing mechanism is provided with bent plate,
The side opening of described bent plate is provided with the interlocking hole in order to coordinate with handcart advancing mechanism, and the front upper portion of described bent plate offers
One ground cutter handle hole, the inner side of described bent plate is provided with interlock plate moving up and down, the side of described interlock plate and the side of bent plate
Face connects, and the front upper portion of described interlock plate offers the second ground cutter handle hole, and the lower section of described second ground cutter handle hole is provided with
Through interlock plate the pressing plate that stretches out the first ground cutter handle hole, the rear of described pressing plate is provided with to drive the ground cutter of earthed switch
Operation axle, is connected by brake cable between described ground cutter operation axle and interlock plate.
Grounding switch interlocking mechanism for switch cabinet the most according to claim 1, it is characterised in that: the lower end of described interlock plate sets
There is the first crimp having brake cable lockhole, interlock plate is additionally provided with the second crimp connected with pressing plate, the side of described interlock plate
Face offers in order to the strip groove being slidably connected with bent plate.
Grounding switch interlocking mechanism for switch cabinet the most according to claim 2, it is characterised in that: the top of described interlock plate with
Connect between mounting angle plate above it and have spring.
Grounding switch interlocking mechanism for switch cabinet the most according to claim 1, it is characterised in that: set on described ground cutter operation axle
Having cam, described cam is fixing with the head of brake cable to be connected, and the lower section of described ground cutter operation axle is provided with to support brake cable
First bracing frame of head, the afterbody of described brake cable and the first crimp are fixing to be connected, and the lower section of described first crimp is provided with use
To support the second bracing frame of brake cable afterbody.
Grounding switch interlocking mechanism for switch cabinet the most according to claim 1, it is characterised in that: described handcart advancing mechanism
Front end be provided with the center with screw mandrel just to shake inlet hole, described in shake the upper end of inlet hole and be provided with catch, described in shake the left and right two of inlet hole
Side is arranged with handcart handle, and described handcart handle is provided with the ground cutter interlocking handle that can move left and right near bent plate end, describedly
Cutter interlocking handle is provided with to insert the dead bolt in interlocking hole.
Grounding switch interlocking mechanism for switch cabinet the most according to claim 1, it is characterised in that: described pressing plate is L-shaped, pressing plate
Front end be provided with projection, described projection pass the first ground cutter handle hole, described first handle hole be symmetrically arranged on two with use up and down
With the groove coordinated with the projection of pressing plate.
Grounding switch interlocking mechanism for switch cabinet the most according to claim 1, it is characterised in that: the left and right within described cabinet
Being symmetrically arranged on two with the link of vertically placement, said two link is fixing with the left and right sides of handcart advancing mechanism respectively to be connected
Connect.
8. the method for work of a grounding switch interlocking mechanism for switch cabinet, it is characterised in that: include as described in claim 1 ~ 7
Grounding switch interlocking mechanism for switch cabinet, comprises the steps of:
(1) circuit breaker cart interlocking: when circuit breaker cart is positioned at testing position, stirs to the right ground cutter interlocking handle and makes dead bolt insert
Interlocking hole, lower pressure catch exposes and shakes inlet hole, shakes to insert into handle and shakes inlet hole and drive screw mandrel to rotate, drives circuit breaker cart to move；
(2) circuit breaker cart release time: earthed switch close a floodgate, described ground cutter operate axle band moving cam rotate clockwise, cam to
On pull brake cable, be pulled down to interlock plate to cover interlocking hole by brake cable, described dead bolt cannot insert interlocking hole, it is achieved connects
Ground switch close a floodgate time, circuit breaker cart cannot shake into；
(3), when circuit breaker cart pushes: grounding switch tripping, stir to the right ground cutter interlocking handle and make dead bolt insert interlocking hole, under
Belling block, drives interlock plate to move down by pressing plate, and dead bolt withstands the lower end of interlock plate, makes the first ground cutter handle hole and the second ground cutter
Handle hole cannot align, and cutter operation handle in ground cannot pass the first ground cutter handle hole and the second ground cutter handle hole, it is achieved chopper
When handcart pushes, earthed switch cannot close a floodgate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678439.9A CN106159773A (en) | 2016-08-17 | 2016-08-17 | Grounding switch interlocking mechanism for switch cabinet and method of work thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678439.9A CN106159773A (en) | 2016-08-17 | 2016-08-17 | Grounding switch interlocking mechanism for switch cabinet and method of work thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106159773A true CN106159773A (en) | 2016-11-23 |
Family
ID=57330964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678439.9A Pending CN106159773A (en) | 2016-08-17 | 2016-08-17 | Grounding switch interlocking mechanism for switch cabinet and method of work thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106159773A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086479A (en) * | 2017-06-22 | 2017-08-22 | 河南森源电气股份有限公司 | Handcart circuit breaker and its interlocking limit self device and handcart type combined electrical device |
| CN108539647A (en) * | 2017-03-01 | 2018-09-14 | 西门子公司 | Chassis vehicle and switchgear for switchgear |
| CN109244914A (en) * | 2018-11-15 | 2019-01-18 | 国网江苏省电力有限公司 | The earthing knife-switch pressing plate opening mechanism of high-voltage switch cabinet of transformer substation |
| CN109412063A (en) * | 2017-08-16 | 2019-03-01 | 天津平高智能电气有限公司 | Breaker chamber interlock |
| CN112736749A (en) * | 2021-01-22 | 2021-04-30 | 福建船政交通职业学院 | KYN high tension switchgear intelligence control system |
| CN115425565A (en) * | 2022-08-29 | 2022-12-02 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Five-prevention interlocking mechanism for distribution board cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108539647A (en) * | 2017-03-01 | 2018-09-14 | 西门子公司 | Chassis vehicle and switchgear for switchgear |
| CN107086479A (en) * | 2017-06-22 | 2017-08-22 | 河南森源电气股份有限公司 | Handcart circuit breaker and its interlocking limit self device and handcart type combined electrical device |
| CN107086479B (en) * | 2017-06-22 | 2023-09-19 | 河南森源电气股份有限公司 | Handcart circuit breaker, interlocking limit self-locking device thereof and handcart type combined electrical appliance |
| CN109412063A (en) * | 2017-08-16 | 2019-03-01 | 天津平高智能电气有限公司 | Breaker chamber interlock |
| CN109244914A (en) * | 2018-11-15 | 2019-01-18 | 国网江苏省电力有限公司 | The earthing knife-switch pressing plate opening mechanism of high-voltage switch cabinet of transformer substation |
| CN109244914B (en) * | 2018-11-15 | 2024-02-06 | 国网江苏省电力有限公司 | Ground knife pressing plate opening mechanism of high-voltage switch cabinet of transformer substation |
| CN112736749A (en) * | 2021-01-22 | 2021-04-30 | 福建船政交通职业学院 | KYN high tension switchgear intelligence control system |
| CN112736749B (en) * | 2021-01-22 | 2023-04-04 | 福建船政交通职业学院 | KYN high tension switchgear intelligence control system |
| CN115425565A (en) * | 2022-08-29 | 2022-12-02 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Five-prevention interlocking mechanism for distribution board cabinet |
| CN115425565B (en) * | 2022-08-29 | 2024-03-29 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Five-prevention interlocking mechanism for distribution board cabinet |
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Application publication date: 20161123 |