CN201549813U - Mechanism for interlocking earthing switch of metalclad withdraw switchgear with switchgear body backdoor - Google Patents
Mechanism for interlocking earthing switch of metalclad withdraw switchgear with switchgear body backdoor Download PDFInfo
- Publication number
- CN201549813U CN201549813U CN2009202629370U CN200920262937U CN201549813U CN 201549813 U CN201549813 U CN 201549813U CN 2009202629370 U CN2009202629370 U CN 2009202629370U CN 200920262937 U CN200920262937 U CN 200920262937U CN 201549813 U CN201549813 U CN 201549813U
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- China
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- mandrel
- cabinet
- earthed switch
- switch operating
- switchgear
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Abstract
The utility model relates to a mechanism for interlocking an earthing switch of a metalclad withdraw switchgear with a switchgear body backdoor, which comprises the switchgear body backdoor, a switchgear body lateral plate and an earthing switch operating shaft. The switchgear body lateral plate is fixedly provided with a support. The earthing switch operating shaft can be rotationally arranged on the support. The tail section of the earthing switch operating shaft is hollow to form a shaft sleeve. The switch operating shaft is also connected with a core shaft. One end of the core shaft is inserted in the shaft sleeve, while the other end thereof is provided with an L-shaped lock hook. A switchgear door is provided with a strip lock hole. The width of the strip lock hole is less than the diameter of the tail end surface of the core shaft. The lateral surface of the core shaft is provided with a spline. The shaft sleeve of the earthing switch operating shaft is provided with a first key slot matched with the spline of the core shaft. The bottom of the shaft sleeve is also provided with a spring. The switchgear body lateral plate is also fixedly provided with an annular clamping frame. The core shaft passes through the annular clamping frame. The annular clamping frame is provided with a second key slot. The spline of the core shaft is in clearance fit with the second key slot of the annular clamping frame. The mechanism for interlocking thje earthing switch of the metalclad withdraw switchgear with the switchgear body backdoor can realize bidirectional interlocking function of the switchgear body backdoor and the earthing switch and has simple structure, convenient operation and strong reliability.
Description
Technical field
The utility model belongs to the technical field of power distribution cabinet, is specifically related to a kind of mid-cabinet earthed switch and cabinet back door interlocking device.
Background technology
Mid-cabinet is that a kind of circuit breaker is the controller switching equipment of handcart-type, and cabinet body structure is divided into three layers, and the rear, upper strata is a bus-bar room, and the place ahead, upper strata is the control room, and the middle level is the circuit breaker cart chamber, and lower floor is the cable vault.The earthed switch that is installed on the cable vault also is indispensable key components in the controller switching equipment; when needs carry out internal maintenance and maintenance to power distribution cabinet; earthed switch can be with the primary circuit reliable ground of controller switching equipment load-side, thus protection personal safety and system safety.Therefore, the opening and closing at the divide-shut brake of earthed switch and cabinet back door must constitute corresponding interlock connection: before earthed switch did not close a floodgate, the cabinet back door can not be opened; And after the cabinet door is opened, also do not shut before, earthed switch can not carry out sub-switching operation.
But the interlocking device at existing mid-cabinet earthed switch and cabinet back door all comes with some shortcomings, the operating procedure trouble is loaded down with trivial details, the interlocking unreliability, misoperation easily, in case open the cabinet back door under the situation that does not have to close a floodgate at earthed switch, perhaps earthed switch is brought serious hidden danger will for personal safety and device security by separating brake after the cabinet door is opened.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned shortcoming and a kind of mid-cabinet earthed switch and cabinet back door interlocking device is provided, and it is simple in structure, and is easy to operate, good reliability.
Its purpose can realize by following scheme: this mid-cabinet earthed switch and cabinet back door interlocking device comprise cabinet back door, side cabinet and earthed switch operating axis, side cabinet is installed with bearing, the earthed switch operating axis is installed in rotation on the bearing, its main feature is, earthed switch operating axis latter end hollow and form axle sleeve; The switching manipulation axle also is connected with a mandrel, and an end of mandrel is inserted in the axle sleeve, and the mandrel other end is provided with L shaped latch hook; On the cabinet door, offer the strip lockhole that matches with L shaped latch hook; The width of strip lockhole is less than the diameter of mandrel terminal surface; The side of mandrel is provided with spline, and the axle sleeve of earthed switch operating axis is provided with first keyway with the mandrel spline fitted, and earthed switch operating axis and mandrel are formed axially can slide relative and circumferential relatively-stationary matching relationship; In the axle sleeve bottom spring that mandrel is applied axial thrust is installed also; Side cabinet also is installed with annular deck, and mandrel passes annular deck, and annular deck is provided with second keyway, and the spline of mandrel cooperates with second keyway of annular deck is movable.
Be preferably, L shaped latch hook is made up of lock shaft and shank of the key that split is provided with, wherein lock shaft is fixedlyed connected with mandrel is coaxial, shank of the key is perpendicular to lock shaft, one end of shank of the key is provided with connecting hole, and lock shaft passes connecting hole, and by a bolt lock shaft and shank of the key is locked, make lock shaft and shank of the key constitute dismountable annexation, become L shaped after the connection; The strip lockhole of described cabinet door cooperates with shank of the key.
The utlity model has following advantage and effect:
1, the utility model is not before earthed switch closes a floodgate, and the cabinet back door is blocked and can't be opened by L shaped latch hook; After earthed switch combined floodgate, cabinet door were opened, before the cabinet door was not also shut again, the earthed switch operating axis can't rotate, thereby can't carry out the earthed switch sub-switching operation; Only after the cabinet back door is shut, just can carry out the operation of earthed switch separating brake.Therefore, the utility model can be realized cabinet back door and the two-way interlock of earthed switch, effectively prevents misoperation, avoids having an accident protection personnel and device security.
2, simple and ingenious structure, easy to operate, good reliability.
3, lock shaft and shank of the key constitute dismountable annexation, and its effect is: when the abnormal conditions that the appearance of earthed switch operating axis can not be rotated, can turn on bolt, pull down shank of the key, thereby can under special emergency the cabinet back door be opened.
Description of drawings
Fig. 1 is that the utility model is closed at the cabinet back door, the structural representation under the earthed switch gate-dividing state.
Fig. 2 is the A-A cross-sectional view under the state shown in Figure 1.
Fig. 3 is that the utility model is closed at the cabinet back door, the schematic diagram under the firm "on" position of earthed switch.
Fig. 4 is the B-B cross-sectional view under the state shown in Figure 3.
Fig. 5 is the cross-sectional structure schematic diagram that earthed switch operating axis latter end forms axle sleeve.
Fig. 6 is the view of the utility model when opening at the cabinet back door.
Fig. 7 is the C-C cross-sectional view under the state shown in Figure 6.
Fig. 8 is the utility model view that L shaped latch hook matches with the strip lockhole at cabinet back door when being in state shown in Figure 1.
Fig. 9 is the utility model another kind of view that L shaped latch hook matches with the strip lockhole at cabinet back door when being in state shown in Figure 3.
Embodiment
Fig. 1, Fig. 3, Fig. 5, mid-cabinet earthed switch and cabinet back door interlocking device shown in Figure 6 comprise cabinet back door 1, side cabinet 5 and earthed switch operating axis 4, the rotation of earthed switch operating axis 4 can make earthed switch close a floodgate or separating brake, side cabinet 5 is installed with bearing 3, earthed switch operating axis 4 is installed in rotation on the bearing 3, earthed switch operating axis 4 latter end hollows and form axle sleeve 41; The earthed switch operating axis also is connected with a mandrel 2, and an end of mandrel 2 is inserted in the axle sleeve 41, and mandrel 2 other ends are provided with L shaped latch hook; L shaped latch hook is made up of lock shaft 72 and shank of the key 7 that split is provided with, wherein lock shaft 72 and mandrel 2 coaxial fixedlying connected, shank of the key 7 is perpendicular to lock shaft 72, one end of shank of the key 7 is provided with connecting hole, lock shaft 72 passes connecting hole, and by a bolt 71 with 7 both lockings of lock shaft 72 and shank of the key, make lock shaft 72 and shank of the key 7 constitute dismountable annexation, become L shaped after the connection.On cabinet back door 1, offer the strip lockhole 11 that matches with the shank of the key 7 of L shaped latch hook, when shank of the key 7 when lock shaft 72 turns to lockset position of coupler, strip lockhole 11 can pass for shank of the key 7, thereby allows cabinet back door 1 open; The width of strip lockhole 11 is less than the diameter of mandrel terminal surface; The side of mandrel is provided with spline 21; Shown in Figure 5, the axle sleeve 41 of earthed switch operating axis is provided with first keyway 411 that cooperates with mandrel spline 21, make earthed switch operating axis 4 and mandrel 2 both form axially can slide relative and circumferential relatively-stationary matching relationship, promptly both can move axially but can not relatively rotate; The spring 6 that mandrel 2 is applied axial thrust also is installed in axle sleeve 41 bottoms; Side cabinet 5 also is installed with annular deck 8, and mandrel 2 passes annular deck 8, and annular deck 8 is provided with second keyway 81, and the spline 21 of mandrel cooperates with second keyway, 81 activities of annular deck.
Operation principle of the present utility model and operating process are as follows:
Fig. 1, shown in Figure 2, when controller switching equipment during in running status, cabinet back door 1 is in closed condition, earthed switch operating axis 4 is in the state that makes the earthed switch separating brake, at this moment, earthed switch operating axis 4, mandrel 2 and L shaped latch hook are in position shown in Figure 1, the shank of the key 7 of L shaped latch hook cooperates as shown in Figure 8 with cabinet back door 1, the shank of the key 7 of L shaped latch hook is in the state that the lockhole with cabinet back door 1 staggers, i.e. locking states, and the shank of the key 7 of L shaped latch hook has blocked cabinet back door 1, it can't be opened, in this case, mandrel 2 and annular deck 8 cooperates as Fig. 1, shown in Figure 2, the spline 21 of mandrel 2 does not insert second keyway of annular deck 8, mandrel 2 can freely rotate, therefore earthed switch operating axis 4 can freely rotate, and after earthed switch operating axis 4 rotated, earthed switch just closed a floodgate.
When the 4 firm rotations of earthed switch operating axis have just been closed a floodgate earthed switch, mandrel 2, L shaped latch hook are along with earthed switch operating axis 4 rotates, mechanism is in state as shown in Figure 3, Figure 4, the shank of the key 7 of L shaped latch hook turns to lockset position of coupler, promptly aim at the position of cabinet back door strip lockhole 11, no longer block cabinet back door 1, as shown in Figure 9, so cabinet back door 1 can be opened.
Shown in Figure 4, can open at cabinet back door 1 but before not opening as yet, because the width of strip lockhole is less than the diameter of mandrel terminal surface, so cabinet back door 1 is always from axially compressing mandrel 2, earthed switch operating axis 4, make spring 6 be in confined state, the spline of mandrel 2 does not enter second keyway of annular deck always.
Fig. 6, shown in Figure 7, after opened at cabinet back door 1, the terminal surface of mandrel 2 was no longer pushed down at the cabinet back door, and mandrel 2 is done the motion of direction D as shown in Figure 6 under the effect of spring 6, the spline of mandrel 2 both sides has entered in second keyway 81 of annular deck 8, as Fig. 6, shown in Figure 7; At this moment, the spline 21 of mandrel 2 is blocked by second keyway 81, and mandrel 2 can not rotate, so earthed switch operating axis 4 can't rotate, and promptly earthed switch can't separating brake; Have only after cabinet back door 1 is closed again, mandrel 2 ends are pushed down at cabinet back door 1 again, make its counter motion of making D direction among Fig. 6, and the spline 21 of mandrel breaks away from second keyway 81 of annular deck 8, earthed switch operating axis 4 could rotate, and earthed switch could be made sub-switching operation.
Claims (2)
1. mid-cabinet earthed switch and cabinet back door interlocking device, comprise cabinet back door, side cabinet and earthed switch operating axis, side cabinet is installed with bearing, the earthed switch operating axis is installed in rotation on the bearing, it is characterized in that: earthed switch operating axis latter end hollow and form axle sleeve; The switching manipulation axle also is connected with a mandrel, and an end of mandrel is inserted in the axle sleeve, and the mandrel other end is provided with L shaped latch hook; On the cabinet door, offer the strip lockhole that matches with L shaped latch hook; The width of strip lockhole is less than the diameter of mandrel terminal surface; The side of mandrel is provided with spline, and the axle sleeve of earthed switch operating axis is provided with first keyway with the mandrel spline fitted, and earthed switch operating axis and mandrel form axially can slide relative and circumferential relatively-stationary matching relationship; In the axle sleeve bottom spring that mandrel is applied axial thrust is installed also; Side cabinet also is installed with annular deck, and mandrel passes annular deck, and annular deck is provided with second keyway, and the spline of mandrel cooperates with second keyway of annular deck is movable.
2. mid-cabinet earthed switch according to claim 1 and cabinet back door interlocking device, it is characterized in that: L shaped latch hook is made up of lock shaft and shank of the key that split is provided with, wherein lock shaft is fixedlyed connected with mandrel is coaxial, shank of the key is perpendicular to lock shaft, one end of shank of the key is provided with connecting hole, lock shaft passes connecting hole, and by a bolt lock shaft and shank of the key is locked; The strip lockhole of described cabinet door cooperates with shank of the key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202629370U CN201549813U (en) | 2009-11-13 | 2009-11-13 | Mechanism for interlocking earthing switch of metalclad withdraw switchgear with switchgear body backdoor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202629370U CN201549813U (en) | 2009-11-13 | 2009-11-13 | Mechanism for interlocking earthing switch of metalclad withdraw switchgear with switchgear body backdoor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201549813U true CN201549813U (en) | 2010-08-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202629370U Expired - Fee Related CN201549813U (en) | 2009-11-13 | 2009-11-13 | Mechanism for interlocking earthing switch of metalclad withdraw switchgear with switchgear body backdoor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201549813U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577775A (en) * | 2015-02-04 | 2015-04-29 | 李常明 | Gateless electronic device mounting cabinet equipment and use method thereof |
| CN104617509A (en) * | 2015-02-13 | 2015-05-13 | 江苏省电力公司东台市供电公司 | Safety protection lock for handcart moving out from 10KV built-in cabinet of transformer substation |
-
2009
- 2009-11-13 CN CN2009202629370U patent/CN201549813U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577775A (en) * | 2015-02-04 | 2015-04-29 | 李常明 | Gateless electronic device mounting cabinet equipment and use method thereof |
| CN104577775B (en) * | 2015-02-04 | 2017-02-08 | 国网山东省电力公司淄博供电公司 | Gateless electronic device mounting cabinet equipment and use method thereof |
| CN104617509A (en) * | 2015-02-13 | 2015-05-13 | 江苏省电力公司东台市供电公司 | Safety protection lock for handcart moving out from 10KV built-in cabinet of transformer substation |
| CN104617509B (en) * | 2015-02-13 | 2024-02-23 | 江苏省电力公司东台市供电公司 | Safety protection lock for 10kV centrally installed switchgear handcart of transformer substation after moving out of cabinet body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20121113 |