CN109300718B - A kind of switchgear anti-misoperation locking device - Google Patents
A kind of switchgear anti-misoperation locking device Download PDFInfo
- Publication number
- CN109300718B CN109300718B CN201811069492.4A CN201811069492A CN109300718B CN 109300718 B CN109300718 B CN 109300718B CN 201811069492 A CN201811069492 A CN 201811069492A CN 109300718 B CN109300718 B CN 109300718B
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- cam
- hole
- protective plate
- switchgear
- operation door
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/16—Earthing arrangements
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The present invention provides a kind of switchgear anti-misoperation locking device, including operation door, control device, protective plate and key, it is equipped with electromagnet in operation door, bottom opens up fluted, and back is equipped with protrusion, and the electromagnet is wired to the groove and is in communication with the outside；The control device includes column, spring, circle wheel and cam, they are sequentially connected in the vertical core for being placed on the control device, and the vertical core is located at the underface of the operation door groove；The control device is also provided with cross-drilled hole, and through-hole, cross-drilled hole and through-hole face are offered at the cam center, is passed through for the key；The lower section of the protective plate is equipped with hole, and with the cross-drilled hole face, top is equipped with notch；The protective plate is suspended on the protrusion of the operation door by the notch.Whether a kind of switchgear anti-misoperation locking device of the invention is equipped with electrical verification component and latch switch, can charge in dual test switchgear, ensures operator's safety.
Description
Technical field
The present invention relates to a kind of switch cabinet equipment field more particularly to a kind of switchgear anti-misoperation locking devices.
Background technique
It is simple and reliable due to ring network cabinet at present, by large-scale use in urban distribution grid power supply engineering, but looped network
Cabinet itself has anti-error defect, can only protect respective scope, cannot be latched to other equipment or lockset, be easy to cause operation
Fault.Such as ring network cabinet on-load switch and earthing switch blade switch cannot operate simultaneously, so only switchgear inner cable not
Just allow to close earthing switch blade when electrification.But existing switchgear is only to earthing switch blade handle hole padlock, in operation by artificially sentencing
Whether power-off cable has electricity, then is unlocked, and there are greater risks for this method, and the accident of electrical ground plug-in strip can occur often,
Seriously affect the life security of operator.
Summary of the invention
In order to solve deficiency present in above-mentioned technology, the present invention proposes a kind of switchgear anti-misoperation locking device, equipped with testing
Whether electrical components and latch switch can charge in dual test switchgear, ensure operator's safety.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of switchgear anti-misoperation locking device, including operation door, control device, protective plate and key, operate and are equipped in door
Electromagnet, bottom open up fluted, and back is equipped with protrusion, the electromagnet be wired to the groove and it is extraneous even
It is logical；The control device includes column, spring, circle wheel and cam, they are sequentially connected the vertical core for being placed on the control device
In, the vertical core is located at the underface of the operation door groove；The control device is also provided with cross-drilled hole, at the cam center
Through-hole, the cross-drilled hole and through-hole face are offered, is passed through for the key；The lower section of the protective plate is equipped with hole, and described
Cross-drilled hole face, top are equipped with notch；The protective plate is suspended on the protrusion of the operation door by the notch.
Further, the protective plate is that the cable in conductive material, with switchgear is electrically connected.
Further, the cam is waney bent wheel, and the distance at point to center on periphery is unequal.
Further, the circle wheel is that higher pair is connect with cam.
Further, the cam is rotated, can be changed between the column that the cam is indirectly connected with and groove
Distance.
Further, in the same horizontal line, one is a pair of respectively for the hole of the cross-drilled hole, the through-hole of cam and protective plate
It answers, and cross sectional shape is that circle is tangent, is connected to rectangle.
Further, display lamp is additionally provided on the operation door, the display lamp and electromagnet are electrically connected.
It further, is electrode at the top of the lock end of the key, the hand portion of holding is insulating materials, and middle part is leading with protrusion
Electric body.
Further, the hole of the lock end of the key and the shape at middle part and the cross-drilled hole, the through-hole of cam, protective plate
Shape it is corresponding, rotation can be mutually matched.
Compared with prior art, the invention has the following advantages:
The present invention provides a kind of switchgear anti-misoperation locking device, can prevent electrification splice grafting, mistakenly entering charged chamber, and
It can check whether to charge, and can be by indicator light intuitive judgment, and dexterously introduce electromagnet and cam structure, utilize electricity
The magnetic fields of magnet are sucked protective plate and are changed the opening and closing of operation door using the unique texture of cam, realize electricity consumption locking operation
The purpose of door, the double design of indicator light and electromagnet are effectively prevented maloperation, considerably increase the safety of operation
Property, greatly ensure the safety of equipment and personnel, and electrical verification and unlock one step of operation are completed.The device designs advantages of simple,
Easy to operate, multiple functional, Social benefit and economic benefit is obvious.
Detailed description of the invention
Fig. 1 is a kind of cross-sectional view of switchgear anti-misoperation locking device provided by the invention.
Fig. 2 is a kind of schematic diagram of switchgear anti-misoperation locking device front view provided by the invention.
Fig. 3 is a kind of dispersion schematic diagram of switchgear anti-misoperation locking device front view provided by the invention.
Fig. 4 is the state signal of a kind of switchgear anti-misoperation locking device control device locking and unlock provided by the invention
Figure.
Fig. 5 is a kind of key schematic diagram of switchgear anti-misoperation locking device provided by the invention.
Description of symbols:
1- operates door；2- control device；3- protective plate；4- electromagnet；5- conducting wire；6- column；
7- spring；8- circle wheel；9- cam；The protrusion 10-；11- hole；12- indicator light；13- key.
Specific embodiment
In order to further explain the technical solution of the present invention, being explained in detail below by specific embodiment the present invention
It states.It should be noted that attached drawing is all made of very simplified form and using non-accurate ratio, only to conveniently, lucidly
Aid in illustrating the purpose of the embodiment of the present invention.
As shown in Fig. 1,2,3 and 4, the present invention provides a kind of switchgear anti-misoperation locking device, including operation door 1, control dress
Set 2, protective plate 3 and key 13.The control device 2 is located at the underface of the operation door 1, and the protective plate 3 is mounted on institute
State the back side of operation door 1.The control device 2 is fixed on switchgear.The operation door 1 is earthing switch blade and outer in switchgear
The Yishanmen of boundary's connection and energy opening operation, it and switchgear are articulated connection, can be rotated centered on vertical axis and be beaten outward
It opens.The protective plate 3 is to further prevent people under switch cabinet electrified state set by opening operation door.The operation door
It is equipped with electromagnet 4 in 1, bottom opens up fluted, and back is equipped with protrusion 10, and the electromagnet 4 is in communication with the outside by conducting wire 5,
It specially is equipped with connecting terminal in the other end of the conducting wire 5 far from the electromagnet 4, the connecting terminal is placed on the groove
It is interior.The placement direction of the electromagnet 4 is parallel to the operation door 1, the side of the magnetic field line generated after making the electromagnet 4 be powered
To perpendicular to the operation door 1, the magnetic field force of generation is also perpendicular to the operation door 1, and the anti-of operation 1 back side of door is sucked
Backplate 3.The setting of the groove is on the one hand in order to by 1 positioning and locking of operation door, on the other hand in order to form power circuit.
The control device 2 includes column 6, spring 7, circle wheel 8 and cam 9, they, which are sequentially connected, is placed on the perpendicular of the control device 2
Kong Zhong, that is, told cam 9 are in bottom, connect with 8 higher pairs of the circle wheel, and the circle wheel 8 is up connected by connector
Spring 7, the bottom end of the top connection column 6 of the spring 7.The bottom end of the column 6 is also arranged with limiting section, prevents its disengaging
The vertical core of the control device 2.The vertical core is located at the underface of operation 1 groove of door；6 top of column can protrude into institute
It states operation 1 groove of door and abuts and be electrically connected with the connecting terminal in groove.The control device 2 is also provided with cross-drilled hole, institute
It states and offers through-hole at 9 center of cam, the cross-drilled hole and through-hole face are passed through for the key 13；The lower section of the protective plate 3
Equipped with hole 11, with the cross-drilled hole face, top is equipped with notch；The protective plate 3 is suspended on the operation by the notch
On the protrusion 10 of door 1.The protrusion 10 is fixed on 1 back side of operation door, protrudes 1 back side of operation door, supplies
The notch of the protective plate 3 is hung.The extension elongation of the protrusion 10 and the through-hole length of the notch quite or slightly longer than institute
The through-hole length of notch is stated, this is the protrusion 10 that the operation door 1 is suspended on to guarantee the protective plate 3 by the notch
On do not fall out.In addition, the notch is opened on the corner of the protective plate 3, it is corresponding with 10 position of protrusion.It is described to lack
Mouthful side leave a blank, be to be axle center with the hole 11 of the protective plate 3 when the protective plate 3 is not when being sucked
Rotation makes the protective plate 3 rotate 180 degree, will not stop the unlatching of the operation door 1 and the operation of operator.
The cam 9 is waney bent wheel, and the distance at point to center on periphery is unequal.The circle wheel 8 and cam 9
For higher pair connection, i.e., the described circle wheel 8 is that point contact or line contact, that is, the circle wheel 8 is along the cam 9 with cam 9
Periphery is mobile, and because the spring 7 and column 6 of 8 connection of circle wheel are limited in the vertical core of the control device 2, so that
In rotation, spring 7 and column 6 of the circle wheel 8 and its connection intermittently rise or fall the cam 9, when rising to
When highest point, the circle wheel 8 is farthest with the centre distance of cam 9, and 6 top of column is ejected 2 upper end of control device
The operation door 1 is locked into the groove of operation 1 bottom of door in face；When rising to lowest part, the circle wheel 8 and cam
9 centre distance is nearest, and the column 6 is pulled, and drops back into 2 vertical core of control device, does not enter into 1 bottom of operation door
The groove in portion cannot lock the operation door 1, can open the operation door 1 at this time.That is, the cam 9 is rotated,
The distance between the column 6 being indirectly connected with the cam 9 and groove can be changed.And the rotation of the cam 9, it is to pass through
The key 13 is inserted into the through-hole of the cam 9, after the two is clamped, rotates what the key 13 was realized.The cross-drilled hole,
The hole 11 of the through-hole of cam 9 and protective plate in the same horizontal line, corresponds, and cross sectional shape is round phase respectively
It cuts, be connected to rectangle.The shape and the cross-drilled hole at the lock end of the key 13 and middle part, the through-hole of cam 9, protective plate hole
11 shape is corresponding, can be mutually matched rotation.The structure being arranged in this way be exactly can be sequentially inserted into for the key 13 it is described
The hole of cross-drilled hole, cam through-hole and protective plate, and the cam 9 and protective plate 3 can be blocked, when rotating the key 13,
The cam 9 blocked and protective plate 3 can be driven to rotate.
It is electrode at the top of the lock end of the key 13, the hand portion of holding is insulating materials, and middle part is the electric conductor with protrusion.Institute
The structure design for stating key 13 ensure that lock end can be conductive, and hand holds portion's no power, has ensured the life security of operator.Separately
The column 6, spring 7, circle wheel 8 and the cam 9 being once arranged from top to bottom in outer 2 vertical core of control device are conduction
Body, and the protective plate 3 is conductive material, is connect with the leading-out terminal of switchgear internal loading switch, is closed when on-load switch is in
When closing energized state, the protective plate 3 also charges simultaneously.So, when operator is sequentially inserted into institute with the key 13
When stating the hole 11 of the cross-drilled hole of control device 2, the through-hole of cam 9 and protective plate, if the switch electrification of switchgear internal loading,
When i.e. cable charges, electricity can lead to the key 13 by the protective plate 3, then be stood electricity by described by the key 13
Column 6, spring 7, circle wheel 8 and cam 9 take 1 bottom groove of operation door to, the groove there are connecting terminal be connected to electricity
Magnet attracts the protective plate 3 so that electromagnet 4, which is powered, generates magnetic field.At this point, the protective plate 3 be tightly adsorbed on it is described
1 back side of door is operated, so that the key 13 can not rotate, so that the operation door 1 can not be opened.The material of the operation door 1
For insulating materials, the conducting wire being internally provided with and electromagnet 4 are only conduction, and 1 outer surface of operation door is using insulation
Coating guarantees that operator will not get an electric shock because cabinet body charges.If switchgear inner cable is not charged, the key 13 and
Its described column 6 being clamped, spring 7, circle wheel 8 and cam 9 are not charged, so the electromagnet 4 in the operation door 1 will not band
Electricity will not generate magnetic field, and generating protective plate 3 described in the gravitational attraction of magnetic field at this point it is possible to rotate the key 13 makes the circle
Wheel 8 is nearest with the centre distance of cam 9, drops back into the column 6 in 2 vertical core of control device, unlocks the column 6 and institute
The clamping of operation door 1 is stated, the operation door 1 is opened.
Display lamp 12 is additionally provided on the operation door 1, the display lamp 12 is electrically connected with electromagnet.The display lamp 12
Setting be for operator when being inserted into the key 13 can intuitive judgment switchgear inner cable whether charge.The display
Lamp 12 is connect with electromagnet 4 using parallel way, this is in order to which when wherein open circuit occurs in a circuit, another circuit is remained to
It works, the anti-error guarantee of anti-misoperation locking device is made to have double, duplicate protection, when electromagnet 4 can not suck protective plate 3, show
Show that lamp can also light, remind electrification in operator's switchgear, not can be carried out out cabinet operation；When display lamp is broken, electromagnet is also
Protective plate 3 can tightly be sucked, rotate the key 13 can not, fail to open the operation door 1.When switchgear inner cable charges
When, the display lamp 12 lights, and the electromagnet 4, which is powered, generates magnetic field, the protective plate 3 is sucked, operation is told in double reaction
The electrification of personnel's switchgear inner cable.
In one embodiment, the operation door 1 is in close state, the cam 9 of the control device 2 with it is described
8 distance of circle wheel is farthest, and 6 top of column is withstood in the groove of operation 1 bottom of door, and the protective plate 3 is suspended on the operation
On the back side protrusion 10 of door 1.When needing to close earthing switch blade, the key 13 is inserted into the control device 2 by operator
In cross-drilled hole, when switchgear inner cable electrification when, operator by the key 13 be sequentially inserted into the cross-drilled hole, cam through-hole and
When the hole of protective plate, the protective plate 3 by the electricity in cable by the key 13 as intermediary conduct to the cam 9,
Then circle wheel 8, spring 7 and column 6 conduct to the electromagnet 4 and display lamp 12 of the operation door 1, the electromagnet 4 are made to be powered
Magnetic field is generated, protective plate 3 is sucked；The display lamp 12 lights, and reminds electrification in operator's switchgear, at this time the key 13
It can not rotate, the column 6 is tightly withstood in the bottom groove of the operation door 1, locks the operation door 1, device is in
Blocking.When switchgear inner cable is not charged, the protective plate 3, key 13, cam 9, circle wheel 8, spring 7 and column 6 are equal
It is not charged, so that the electromagnet 4 and the equal no power of display lamp 12, the display lamp 12 of the operation door 1 do not work, the key 13
It can rotate.In the present embodiment, the key 13 is rotated clockwise, while the protective plate 3 and cam 9 being driven to rotate, institute
Protective plate 3 is stated with hole 11 thereon as axle center rotation, so that the protective plate 3 is gradually rotated 180 degree, allows 3 turns of the protective plate
To the lower section of the operation door 1, this position will not stop the unlatching of the operation door 1 and the operation of operator；The cam 9
By recently, making the column 6 by being withstood on the bottom for operating door 1 with the round farthest extremely the two distance that rotates of 8 distances of taking turns
Position in groove drops back into the vertical core of the control device 2 and lower than vertical core top, unlocks the locking of the operation door 1, dress
It sets in the unlocked state.Operator can operate the device in switchgear with opening operation door.After end of operation, close
The operation door 1 is closed, the key 13 is then rotated counterclockwise, so that the protective plate 3 is reversely rotated 180 degree, by the operation
The lower section of door 1 goes to 1 top of operation door, while the notch of the protective plate 3 being made to come back to the protrusion for operating door 1
On 10；Make simultaneously the cam 9 by with 8 distance of circle wheel rotation recently to both distance it is farthest, by the column 6 by being in
Position in the vertical core of the control device 2 gradually rises, and protrudes into the bottom groove of the operation door 1, locks the operation
Door 1, device comes back to blocking.Door 1 is operated in order to facilitate open and close, can be arranged in the outer surface of the operation door 1
Handle facilitates operation people's carrying out horizontal push-pull effort.
The present invention provides a kind of switchgear anti-misoperation locking device, can prevent electrification splice grafting, mistakenly entering charged chamber, and
It can check whether to charge, and can be by indicator light intuitive judgment, and realize the locking for operating door using the electricity in switchgear,
Achieve the purpose that double shield, considerably increase the safety of operation, greatly ensures the safety of equipment and personnel, and electrical verification
It is completed with unlock one step of operation.The device designs advantages of simple, and easy to operate, multiple functional, Social benefit and economic benefit is obvious.
It is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although reference
Invention is explained in detail for previous embodiment, those skilled in the art should understand that: it still can be right
Technical solution documented by foregoing embodiments is modified or equivalent replacement of some of the technical features；And this
It modifies or replaces, the protection scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of switchgear anti-misoperation locking device, including operation door (1), control device (2), protective plate (3) and key (13),
Be characterized in that, operation door (1) in be equipped with electromagnet (4), bottom open up it is fluted, back be equipped with protrusion (10), the electromagnet
(4) groove is connected to by conducting wire (5) to be in communication with the outside；The control device (2) includes column (6), spring (7), circle
(8) and cam (9) are taken turns, they are sequentially connected in the vertical core for being placed on the control device (2), and the vertical core is located at the operation
The underface of door (1) groove；The control device (2) is also provided with cross-drilled hole, offers through-hole at cam (9) center, institute
Cross-drilled hole and through-hole face are stated, is passed through for the key (13)；The lower section of the protective plate (3) is equipped with hole (11), with the cross
Hole face, top are equipped with notch；The protective plate (3) is suspended on the protrusion of operation door (1) by the notch
(10) on, the protrusion (10) is fixed on operation door (1) back side, protrudes operation door (1) back side, for described anti-
The notch of backplate (3) is hung；It is electrode at the top of the lock end of the key (13), the hand portion of holding is insulating materials, and middle part is with convex
The electric conductor risen；The column (6), spring (7), the circle wheel (8) set gradually from top to bottom in control device (2) vertical core
It is electric conductor with cam (9)；The through-hole, anti-of the shape and the cross-drilled hole at the lock end of the key (13) and middle part, cam (9)
The shape of the hole (11) of backplate is corresponding, can be mutually matched rotation.
2. a kind of switchgear anti-misoperation locking device according to claim 1, which is characterized in that the protective plate (3) is to lead
Electric material is electrically connected with the cable in switchgear.
3. a kind of switchgear anti-misoperation locking device according to claim 1, which is characterized in that the cam (9) is to differ
The bent of diameter is taken turns, and the distance at point to center on periphery is unequal.
4. a kind of switchgear anti-misoperation locking device according to claim 1, which is characterized in that the circle wheel (8) and cam
(9) it is connected for higher pair.
5. a kind of switchgear anti-misoperation locking device according to claim 1, which is characterized in that rotate the cam (9), energy
Change the distance between the column (6) being indirectly connected with the cam (9) and groove.
6. a kind of switchgear anti-misoperation locking device according to claim 1, which is characterized in that the cross-drilled hole, cam (9)
The hole (11) of through-hole and protective plate in the same horizontal line, corresponds respectively, and cross sectional shape is that circle is tangent, connects
Pass through rectangle.
7. a kind of switchgear anti-misoperation locking device according to claim 1, which is characterized in that on the operation door (1) also
Equipped with display lamp (12), the display lamp (12) and electromagnet are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069492.4A CN109300718B (en) | 2018-09-13 | 2018-09-13 | A kind of switchgear anti-misoperation locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069492.4A CN109300718B (en) | 2018-09-13 | 2018-09-13 | A kind of switchgear anti-misoperation locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109300718A CN109300718A (en) | 2019-02-01 |
| CN109300718B true CN109300718B (en) | 2019-10-11 |
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ID=65166841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811069492.4A Active CN109300718B (en) | 2018-09-13 | 2018-09-13 | A kind of switchgear anti-misoperation locking device |
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| CN (1) | CN109300718B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867159B (en) * | 2009-04-17 | 2012-05-30 | 常州帕斯菲克自动化技术有限公司 | Device for preventing high-voltage switch cabinet from being locked by mistake |
| CN202585186U (en) * | 2012-04-21 | 2012-12-05 | 福州天宇电气股份有限公司 | Interlocking device for transformer cabinet door |
| CN204144704U (en) * | 2014-09-19 | 2015-02-04 | 珠海优特电力科技股份有限公司 | Switch cubicle anti-misoperation locking lockset and anti-misoperation locking device |
| CN206672821U (en) * | 2017-04-07 | 2017-11-24 | 江苏徐塘发电有限责任公司 | A kind of stopping means of outdoor AC high-voltage disconnecting switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202009012183U1 (en) * | 2009-09-08 | 2009-11-26 | Bürkert Werke GmbH & Co. KG | Manually actuable control module |
-
2018
- 2018-09-13 CN CN201811069492.4A patent/CN109300718B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867159B (en) * | 2009-04-17 | 2012-05-30 | 常州帕斯菲克自动化技术有限公司 | Device for preventing high-voltage switch cabinet from being locked by mistake |
| CN202585186U (en) * | 2012-04-21 | 2012-12-05 | 福州天宇电气股份有限公司 | Interlocking device for transformer cabinet door |
| CN204144704U (en) * | 2014-09-19 | 2015-02-04 | 珠海优特电力科技股份有限公司 | Switch cubicle anti-misoperation locking lockset and anti-misoperation locking device |
| CN206672821U (en) * | 2017-04-07 | 2017-11-24 | 江苏徐塘发电有限责任公司 | A kind of stopping means of outdoor AC high-voltage disconnecting switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109300718A (en) | 2019-02-01 |
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