CN105932587A - DC fast circuit breaker trunk - Google Patents
DC fast circuit breaker trunk Download PDFInfo
- Publication number
- CN105932587A CN105932587A CN201610507186.9A CN201610507186A CN105932587A CN 105932587 A CN105932587 A CN 105932587A CN 201610507186 A CN201610507186 A CN 201610507186A CN 105932587 A CN105932587 A CN 105932587A
- Authority
- CN
- China
- Prior art keywords
- handcart
- chassis
- switch cubicle
- valve
- circuit breaker
- 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.)
- Pending
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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
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention relates to a DC fast circuit breaker trunk, which is arranged in a switch cabinet and comprises a chassis, a breaker, a contact, a counter and a valve. The chassis is arranged between the inner sidewalls at the left side and the right side of the switch cabinet and can move in the switch cabinet; the breaker and the counter are respectively arranged on the chassis and can move along with the chassis; the counter is electrically connected to the breaker; and the back side of the breaker extends to form the contact. The valve is embedded into the back sidewall of the switch cabinet; the upper edge of the valve is hinged to the back sidewall of the switch cabinet and can turn around the upper edge thereof; and the chassis is movably connected to the valve through a valve propulsion mechanism. The DC fast circuit breaker trunk has compact structure and small occupied space; in comparison with other integrated circuit breaker trunks, the manufacturing and the installation are more convenient and the cost is lower; through the valve propulsion mechanism, the circuit breaker trunk can be quickly and easily pushed into or exited to a working position or an experiment position, the operations are simple, safe and more reliable, and the replacement is faster.
Description
Technical field
The present invention relates to electric and field of mechanical technique, particularly relate to a kind of handcart with DC quick-break circuit breaker.
Background technology
Development along with China's electric utility.Circuit breaker cart as parts of switchgear,
Reliable switch closing and switch opening is needed when operating position and testing position；Extracting out and in insertion process, open circuit
Device can not carry out feed motion in the lockout condition；Turning of chopper both positions in switch cubicle
Change is to be realized by the movement of handcart.And chopper is when "on" position, it is impossible to mobile handcart, to prevent
On-load operation causes certain harm to power equipment and operator.The chassis of handcart type breaker
Blocking device can avoid the misoperation of chopper, it is achieved it is safe and reliable that equipment runs.
Circuit breaker cart of the prior art there is also the safety issue of use, is in particular in, due to
The push-pull device at fixed of switch cabinet is separated from each other two devices with the device of its divide-shut brake of control, to open circuit
The push-and-pull displacement of device handcart and divide-shut brake control nonsynchronous situation likely occur, the people to operator
The operation of body safety and equipment brings safely great hidden danger.
Summary of the invention
The technical problem to be solved is for above-mentioned the deficiencies in the prior art, it is provided that a kind of direct current
Fast chopper handcart.
The technical scheme is that a kind of handcart with DC quick-break circuit breaker,
Described handcart is arranged in switch cubicle, and described handcart includes chassis, chopper, contact, enumerator and work
Door.
Described chassis is arranged between the medial wall of the described switch cubicle left and right sides, and can be at described switch cubicle
Interior movement, described chopper sum counter is separately positioned on described chassis, and can be along with described chassis one
Play motion, and described enumerator be connected with described circuit breaker electric, on rear side of described chopper extended
State contact.
Described valve is inlayed and is arranged on described switch cubicle rear wall, and the upper edge of described valve is with described
The rear wall of switch cubicle is hinged, and can overturn around its upper edge, logical between described chassis and described valve
Crossing valve propulsive mechanism to be flexibly connected, when described chassis is moved rearwards by, described valve propulsive mechanism promotes
Described valve overturns to the rear of described switch cubicle rear wall, and when described chassis is moved rearwardly into stroke end
During end, described contact just through be arranged on the opening on described valve and be arranged on described switch cubicle after
The high-tension circuit electrical connection at sidewall rear.
The invention has the beneficial effects as follows: a kind of handcart with DC quick-break circuit breaker of the present invention, compact conformation,
Space hold is little, compare other integral circuit breaker handcarts make and install more convenient, cost is lower, logical
Cross valve propulsive mechanism quickly can easily be pushed by handcart of direct-current circuit breaker or exit to operating position or reality
Test position, safety simple to operate, more reliable, change faster.
On the basis of technique scheme, the present invention can also do and improve as follows:
Further: inside the left and right sides of described switch cubicle, transverse is respectively equipped with slide rail, described chassis
Edge, left and right be respectively equipped with roller, described roller is connected in the described slide rail of correspondence, and the described end
Dish can be moved along described slide rail by described roller in described switch cubicle.
Above-mentioned further scheme provides the benefit that: in this way can be eaily by described hands
Car moves in described switch cubicle, and described handcart is the most smooth, more preferably adapts to on-the-spot complexity
Work condition environment, operation is more saved trouble and facilitates, easy to maintenance, safe and efficient.
Further: to be provided with secondary air plug on described chassis, described chopper is plugged on described secondary air plug
Above and electrically connect with described secondary air plug.
Above-mentioned further scheme provides the benefit that: can facilitate described disconnected by arranging described secondary air plug
Road device grafting, easy for installation, it is also convenient for being connected with described enumerator point, contact is stable, does not haves and connects
Touch situation about loosening.
Further: described enumerator is arranged on the front edge on described chassis, described enumerator is by described
Secondary air plug is connected with described circuit breaker electric, and the display screen of described enumerator is from being arranged on described switch cubicle
Stretch out in opening on the cabinet door of front side.
Above-mentioned further scheme provides the benefit that: operator can be facilitated in this way without beating
The cabinet door driving switch cubicle can understand the counting of enumerator in real time, and the most intuitively, experience sense is stronger.
Further: the rear end of described contact is provided with the clamping that the binding post with described high-tension circuit matches
Terminal, when described chassis is moved rearwardly into end of travel, described clamping terminal connects with described high-tension circuit
Line terminals clamping, and the two electrical connection.
Above-mentioned further scheme provides the benefit that: can be compared by described clamping cross-talk and touch so that described
Head contacts well with the binding post of high-tension circuit, it is to avoid owing to handcart causes described during movement
The binding post loose contact of contact and high-tension circuit and the too high phenomenon of temperature rise.
Further: to slide along direction in described chassis and be provided through leading screw, and described chassis and institute
Stating threads of lead screw to connect, described switch cubicle is outside equipped with the handle rotating described leading screw, on described handle
In card female connector stretches into described switch cubicle by the through hole being arranged on front side of described switch cubicle on cabinet door and with institute
State the front end clamping of leading screw.
Above-mentioned further scheme provides the benefit that: coordinates described handle by described leading screw, can compare
Smoothly described handcart is operated, it is to avoid owing to the operating position deviation of rival car causes dynamic/static contact
Loose contact and the too high phenomenon of temperature rise, reduce potential safety hazard, it is achieved safety operation further.
Further: described valve propulsive mechanism includes two first connecting rods being mutually rotationally connected and second even
Bar, described first connecting rod is connected away from the rear end on one end of described second connecting rod and described chassis is fixing, institute
State second connecting rod to be rotationally connected with described valve away from one end of described first connecting rod, and when contracting in described chassis
When entering in described switch cubicle, one end that described second connecting rod is connected with described first connecting rod around with described work
One end that door connects rotates, and progressively promotes described valve to overturn to the rear of described switch cubicle rear wall.
Above-mentioned further scheme provides the benefit that: can be at described handcart by described valve propulsive mechanism
Described valve is promoted to overturn to the rear of described switch cubicle rear wall when being moved rearwards by smoothly, and described hands
The one end being connected with described second connecting rod on described first connecting rod when car moves forward can be automatically with described
Valve is automatically separated, and described valve is naturally drooped position by what self gravitation returned to original state.
It is further: also to include that handcart locking mechanism, described handcart locking mechanism are arranged on described chassis,
Described chopper electrically connects with described handcart locking mechanism and controls the state of described handcart locking mechanism, when
During described breaker closing, described handcart locking mechanism is in locking states, and described chassis locking cannot move
Dynamic.
Above-mentioned further scheme provides the benefit that: be may insure that described disconnected by described handcart locking mechanism
When road device closes a floodgate, chassis locking cannot move, and the Qianmen of described switch cubicle cannot be opened, in case leukorrhagia stopping is born
Lotus operates causes certain harm to power equipment and operator.
Further: also to include that interlocking mechanism, described interlocking mechanism are arranged on the edge, front side on described chassis
And electrically connect with described handcart locking mechanism, and permit whether the Qianmen of described switch cubicle opens.
Above-mentioned further scheme provides the benefit that: by described interlocking mechanism so that only described
Ability operating breaker handcart under the front door closure state of switch cubicle, and when handcart is in operating position, outward
Door cannot be opened, and further ensures that operator's personal safety.
Accompanying drawing explanation
Fig. 1 is a kind of handcart with DC quick-break circuit breaker front view of the present invention；
Fig. 2 is a kind of direct current quick breaker hands explosive view of the present invention；
Fig. 3 is a kind of handcart with DC quick-break circuit breaker left view of the present invention；
Fig. 4 is a kind of handcart with DC quick-break circuit breaker right view of the present invention；
Fig. 5 is a kind of handcart with DC quick-break circuit breaker front view of the present invention；
Fig. 6 is a kind of handcart with DC quick-break circuit breaker top view of the present invention
Fig. 7 is a kind of handcart with DC quick-break circuit breaker upward view of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows:
1, chassis, 2, chopper, 3, contact, 4, enumerator, 5, valve, 6, valve pusher
Structure, 7, slide rail, 8, secondary air plug, 9, clamping terminal, 10, leading screw, 11, first connecting rod, 12,
Second connecting rod, 13, handcart locking mechanism, 14, interlocking mechanism.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining this
Invention, is not intended to limit the scope of the present invention.
As it is shown in figure 1, a kind of handcart with DC quick-break circuit breaker, described handcart is arranged in switch cubicle, institute
State handcart and include chassis 1, chopper 2, contact 3, enumerator 4 and valve 5.
Described chassis 1 is arranged between the medial wall of the described switch cubicle left and right sides, and can be at described switch
Moving in cabinet, described chopper 2 sum counter 4 is separately positioned on described chassis 1, and can be along with institute
State chassis 1 to move together, and described enumerator 4 electrically connects with described chopper 2, described chopper 2
Rear side is extended described contact 3.
Described valve 5 is inlayed and is arranged on described switch cubicle rear wall, and the upper edge of described valve 5 with
The rear wall of described switch cubicle is hinged, and can overturn around its upper edge, described chassis 1 and described valve
It is flexibly connected by valve propulsive mechanism 6 between 5, when described chassis 1 is moved rearwards by, described valve
Propulsive mechanism 6 promotes described valve 5 to overturn to the rear of described switch cubicle rear wall, and when described chassis
1 when being moved rearwardly into end of travel, and described contact 3 is just through being arranged on the opening on described valve 5
And electrically connect with the high-tension circuit being arranged on described switch cubicle rear wall rear.
In the present embodiment, what the medial wall, the left and right sides of described switch cubicle was the most horizontal is provided with slide rail 7, institute
The edge, left and right stating chassis 1 is respectively equipped with roller, and described roller is connected in the described slide rail 7 of correspondence,
And described chassis 1 can be moved along described slide rail 7 by described roller in described switch cubicle.By this
Described handcart can be moved in described switch cubicle by the mode eaily of kind, and described handcart is operationally
More smooth, more preferably adapt to on-the-spot complicated work condition environment, operation is more saved trouble and facilitates, maintenance side
Just, safe and efficient.
Preferably, described chassis 1 being provided with secondary air plug 8, described chopper 2 is plugged on described two
Electrically connect on secondary air plug 8 and with described secondary air plug 8.Can facilitate by arranging described secondary air plug 8
Described chopper grafting, installation and removal are all very convenient, are also convenient for being connected with described enumerator point, contact
Stable, do not have the situation that contact loosens.
In the present embodiment, described enumerator 4 is arranged on the front edge on described chassis 1, described enumerator
4 are electrically connected with described chopper 2 by described secondary air plug 8, and the display screen of described enumerator 4 from
Stretch out in the opening being arranged on front side of described switch cubicle on cabinet door.Operator can be facilitated in this way
Member can understand the counting of enumerator in real time without opening the cabinet door of switch cubicle, and the most intuitively, experience sense is relatively
By force.
Preferably, the rear end of described contact 3 is provided with the card that the binding post with described high-tension circuit matches
Connecting terminal 9, when described chassis 1 is moved rearwardly into end of travel, described clamping terminal 9 and described high pressure
The binding post clamping of circuit, and the two electrical connection.Can be compared so that institute by described clamping cross-talk 9
State contact 3 and contact well with the binding post of high-tension circuit, it is to avoid owing to handcart is made during movement
Become described contact 3 and the binding post loose contact of high-tension circuit and the too high phenomenon of temperature rise.
In the present embodiment, slide along direction in described chassis 1 and be provided through leading screw 10, and described
Threadeding with described leading screw 10 in chassis 1, described switch cubicle is outside equipped with the hands rotating described leading screw 10
Handle, the card female connector on described handle stretches into described by the through hole being arranged on front side of described switch cubicle on cabinet door
In switch cubicle and with the front end clamping of described leading screw 10.Described handle is coordinated by described leading screw 10, can
Relatively smoothly described handcart is operated, it is to avoid owing to the operating position deviation of rival car causes moving
Static contact loose contact and the too high phenomenon of temperature rise, reduce potential safety hazard, it is achieved safety operation further.
Preferably, described valve propulsive mechanism 6 includes two first connecting rod being mutually rotationally connected 11 Hes
Second connecting rod 12, described first connecting rod 11 is away from one end and the described chassis 1 of described second connecting rod 12
Rear end fixing connect, described second connecting rod 12 is away from one end of described first connecting rod 11 and described valve
5 are rotationally connected, and when in switch cubicle described in described chassis 1 indentation, described second connecting rod 12 is with described
One end that first connecting rod connects rotates around the one end being connected with described valve 5, and progressively promotes described work
Door 5 overturns to the rear of described switch cubicle rear wall.Can be described by described valve propulsive mechanism 6
Described valve 5 is promoted to overturn to the rear of described switch cubicle rear wall when handcart 7 is moved rearwards by smoothly,
And one end that described handcart 7 is connected with described second connecting rod 12 on described first connecting rod 11 when moving forward
Can automatically be automatically separated with described valve 5, described valve 3 is returned to oneself of original state by self gravitation
So pendant position.
Preferably, a kind of handcart with DC quick-break circuit breaker of the present invention also includes handcart locking mechanism 13, institute
State handcart locking mechanism 13 to be arranged on described chassis 1, described chopper 2 and described handcart locking machine
Structure 13 electrically connects and controls the state of described handcart locking mechanism 13, when described chopper 2-in-1 lock time institute
Stating handcart locking mechanism 13 and be in locking states, described chassis 1 locking cannot move.By described hands
When car locking mechanism 13 may insure that described chopper 2-in-1 lock, chassis 1 locking cannot move, and described
The Qianmen of switch cubicle cannot be opened, in case leukorrhagia stopping load operation causes necessarily to power equipment and operator
Harm.
In reality, described chassis 1 being provided with jam plate, described handcart locking mechanism 13 includes electric magnet,
When the iron core of electric magnet stretches out and blocks jam plate, described chassis cannot be moved, is in blocking, when
When needing mobile chassis, dc circuit breaker switches to gate-dividing state from "on" position, and the most described handcart is locked
The electric magnet closing mechanism 13 obtains electric adhesive, and iron core is retracted, and the movement on described chassis 1 will not be caused resistance
Hindering, i.e. lock release, described chassis 1 can move freely.
Preferably, a kind of handcart with DC quick-break circuit breaker of the present invention also includes interlocking mechanism 14, described
Latch mechanism 11 is arranged on the edge, front side on described chassis 1 and electrically connects with described handcart locking mechanism 13,
And permit whether the Qianmen of described switch cubicle opens.By described interlocking mechanism 14 so that only exist
Under the front door closure state of described switch cubicle could operating breaker handcart, and handcart is in operating position
Time, external door cannot be opened, it is ensured that operator's personal safety.
In reality, when handcart is in testing position, without interlocking between Qianmen and the handcart of described switch cubicle,
The Qianmen of described switch cubicle can be opened, when handcart leave testing position be in operating position time, described
Latch mechanism 14 action so that interlock with described handcart in the Qianmen of described switch cubicle, now before switch cubicle
Door cannot be opened.It addition, only behind the Qianmen closing described switch cubicle, the handle of handcart just can lead to
The through hole crossed on front side of switch cubicle on cabinet door operates described leading screw 10 in stretching into described switch cubicle, substantially increases
The safety of operator.
A kind of handcart with DC quick-break circuit breaker of the present invention, has the advantage that
1, compact conformation, space hold are little, compare other integral circuit breaker handcarts and make and install more
Conveniently, cost is lower；
2, the ripe valve propulsive mechanism reliably of configuration, quickly can easily push handcart or exit to work
Make position or experimental site, compare the operation of other integral circuit breaker handcarts more easily, more reliable；
3, only comprise a chopper and in-out end contact, compare other circuit breaker carts more reliable, more
Change faster；
4, handcart blocking mechanism, valve propulsive mechanism it are provided by, it is ensured that handcart is in all cases
Reliable interlock connection is had with external manipulation mechanism；
5, by arranging interlock, ability operating breaker handcart under door closure state the most outside,
And handcart with DC quick-break circuit breaker is when being in operating position, external door cannot be opened, it is ensured that operator's person
Safety.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the present invention
Spirit and principle within, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (9)
1. a handcart with DC quick-break circuit breaker, described handcart is arranged in switch cubicle, it is characterised in that:
Described handcart includes chassis (1), chopper (2), contact (3), enumerator (4) and valve (5)；
Described chassis (1) is arranged between the medial wall of the described switch cubicle left and right sides, and can be described
Moving in switch cubicle, described chopper (2) sum counter (4) is separately positioned on described chassis (1)
On, and can move together along with described chassis (1), and described enumerator (4) and described chopper (2)
Electrical connection, described chopper (2) rear side is extended described contact (3)；
Described valve (5) is inlayed and is arranged on described switch cubicle rear wall, and described valve (5) is upper
Edge is hinged with the rear wall of described switch cubicle, and can overturn around its upper edge, described chassis (1)
It is flexibly connected, when described chassis (1) by valve propulsive mechanism (6) with between described valve (5)
When being moved rearwards by, described valve propulsive mechanism (6) promotes described valve (5) on rear side of described switch cubicle
The rear upset of wall, and when described chassis (1) is moved rearwardly into end of travel, described contact (3)
Just through be arranged on the opening on described valve (5) and be arranged on described switch cubicle rear wall rear
High-tension circuit electrical connection.
A kind of handcart with DC quick-break circuit breaker, it is characterised in that: described
What the medial wall, the left and right sides of switch cubicle was the most horizontal is provided with slide rail (7), the left and right of described chassis (1)
Edge is respectively equipped with roller, and described roller is connected in the described slide rail (7) of correspondence, and the described end
Dish (1) can be moved along described slide rail (7) by described roller in described switch cubicle.
A kind of handcart with DC quick-break circuit breaker, it is characterised in that: described
Being provided with secondary air plug (8) on chassis (1), described chopper (2) is plugged on described secondary air plug
(8) above and electrically connect with described secondary air plug (8).
A kind of handcart with DC quick-break circuit breaker, it is characterised in that: described
Enumerator (4) is arranged on the front edge on described chassis (1), and described enumerator (4) is by described
Secondary air plug (8) electrically connects with described chopper (2), and the display screen of described enumerator (4) from
Stretch out in the opening being arranged on front side of described switch cubicle on cabinet door.
A kind of handcart with DC quick-break circuit breaker, it is characterised in that: described
The rear end of contact (3) is provided with the clamping terminal (9) that the binding post with described high-tension circuit matches,
When described chassis (1) is moved rearwardly into end of travel, described clamping terminal (9) and described high-tension circuit
Binding post clamping, and the two electrical connection.
A kind of handcart with DC quick-break circuit breaker, it is characterised in that: described
Slide along direction in chassis (1) and be provided through leading screw (10), and described chassis (1) and institute
Stating leading screw (10) threaded, described switch cubicle is outside equipped with the handle rotating described leading screw (10),
Card female connector on described handle by the through hole being arranged on front side of described switch cubicle on cabinet door stretch into described in open
Close in cabinet and with the front end clamping of described leading screw (10).
A kind of handcart with DC quick-break circuit breaker, it is characterised in that: described
Valve propulsive mechanism (6) includes two first connecting rods being mutually rotationally connected (11) and second connecting rod (12),
After described first connecting rod (11) is away from one end and the described chassis (1) of described second connecting rod (12)
End is fixing to be connected, and described second connecting rod (12) is away from one end of described first connecting rod (11) and described work
Door (5) is rotationally connected, and when in switch cubicle described in described chassis (1) indentation, described second connecting rod
(12) one end being connected with described first connecting rod rotates around the one end being connected with described valve (5),
And progressively promote described valve (5) to overturn to the rear of described switch cubicle rear wall.
8. according to handcart with DC quick-break circuit breaker a kind of described in any one of claim 1 to 7, its feature
It is: also include that handcart locking mechanism (13), described handcart locking mechanism (13) are arranged on the described end
On dish (1), described chopper (2) electrically connects with described handcart locking mechanism (13) and controls described
The state of handcart locking mechanism (13), the described handcart locking mechanism when described chopper (2) closes a floodgate
(13) being in locking states, described chassis (1) locking cannot move.
A kind of handcart with DC quick-break circuit breaker, it is characterised in that: also wrap
Including interlocking mechanism (14), described interlocking mechanism (11) is arranged on the front side edge edge on described chassis (1)
Place also electrically connects with described handcart locking mechanism (13), and permit whether the Qianmen of described switch cubicle opens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610507186.9A CN105932587A (en) | 2016-06-30 | 2016-06-30 | DC fast circuit breaker trunk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610507186.9A CN105932587A (en) | 2016-06-30 | 2016-06-30 | DC fast circuit breaker trunk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105932587A true CN105932587A (en) | 2016-09-07 |
Family
ID=56828840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610507186.9A Pending CN105932587A (en) | 2016-06-30 | 2016-06-30 | DC fast circuit breaker trunk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105932587A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107317254A (en) * | 2017-08-24 | 2017-11-03 | 协成科技股份有限公司 | Longitudinal withdraw-type circuit breaker cart |
| CN109787136A (en) * | 2019-01-21 | 2019-05-21 | 平高集团有限公司 | Circuit breaker trolley, switchgear and its interlock |
| CN113948995A (en) * | 2021-09-17 | 2022-01-18 | 许继集团有限公司 | Interlocking device for operation of handcart and cabinet door of switch cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107317254B (en) * | 2017-08-24 | 2023-06-30 | 协成科技股份有限公司 | Longitudinally-moving type circuit breaker handcart |
| CN109787136A (en) * | 2019-01-21 | 2019-05-21 | 平高集团有限公司 | Circuit breaker trolley, switchgear and its interlock |
| CN113948995A (en) * | 2021-09-17 | 2022-01-18 | 许继集团有限公司 | Interlocking device for operation of handcart and cabinet door of switch cabinet |
| CN113948995B (en) * | 2021-09-17 | 2023-10-20 | 许继集团有限公司 | Switch cabinet handcart and cabinet door operation interlocking device |
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Application publication date: 20160907 |