CN106783279B - Mechanical interlocks and high-tension switch gear for high-tension switch gear - Google Patents

Mechanical interlocks and high-tension switch gear for high-tension switch gear Download PDF

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Publication number
CN106783279B
CN106783279B CN201510811085.6A CN201510811085A CN106783279B CN 106783279 B CN106783279 B CN 106783279B CN 201510811085 A CN201510811085 A CN 201510811085A CN 106783279 B CN106783279 B CN 106783279B
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China
Prior art keywords
switch
plate
earthing
operable
mechanical interlocks
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CN201510811085.6A
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CN106783279A (en
Inventor
马鸣
马一鸣
谢建波
何兴隆
邓显波
格秀山
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ABB Technology AG
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ABB Technology AG
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20Interlocking, locking, or latching mechanisms

Abstract

The present invention provides a kind of mechanical interlocks for high-tension switch gear and corresponding switchgear.Mechanical interlocks includes on off state instruction device (42), further includes horizontal interlocking plate (13), isolated operation hole baffle (2) and ground connection handle hole baffle (4);On off state instruction device (42) back side is equipped with lug boss (43);The lock tongue (27) for stretching out switch cabinet panel is fixed on horizontal interlocking plate;Lock tongue (27) can drive horizontal interlocking plate to be moved between disconnecting switch operable position, inoperable position and earthing switch operable position, and lock tongue is in disconnecting switch operable position, inoperable position and the equal lockable of earthing switch operable position;When disconnecting switch is connected, lug boss (43) the barrier level interlock plate and lock tongue are moved toward earthing switch operable position;When ground switch earthing, lug boss (43) barrier level interlock plate and lock tongue are moved toward disconnecting switch operable position.

Description

Mechanical interlocks and high-tension switch gear for high-tension switch gear
Technical field
The invention belongs to power product technical fields, and in particular to a kind of mechanical interlocking applied on high-tension switch gear Device prevents maloperation to realize, protects the function of operating personnel's safety.
Background technology
The interlock of high-tension switch cabinet be ensure power network safe operation, ensure life safely, prevent the weight of maloperation Want measure.For three-stations load switch, following functions will be realized by interlock:
1) when ground switch earthing, disconnecting switch cannot operate;
2) when disconnecting switch closes, earthing switch cannot operate;
3) only when ground switch earthing, cable chamber door could be opened;
4) when cable chamber door is opened, earthing switch and disconnecting switch cannot operate.
Interlocking mechanism's realization method in different switchgear products is all different, the mechanical interlocking of existing high-tension switch cabinet Device is primarily present problems with:
1) locking plate partial occlusion isolator operation hole and earthing switch handle hole are used, is interlocked in demand with realization Stop that operation handle enters under situation, however shield portions are smaller, it is possible to since manufacture and rigging error lead to not block, Interlock fault, in addition this design cannot meet IP4X requirements;2) by wire rope gearing, steel wire between locking plate and driving sliding block Rope may extend after prolonged use to be even broken, and interlock fault is caused;
3) after carrying out ground connection operation, if ground connection operation handle opens cable chamber door when not extracting, earthing switch is still at this time Safety accident can be caused with operational grounding separating brake;
4) complicated, number of parts is more, and corresponding cost is higher.
Invention content
The problem of being primarily present for above-mentioned existing interlocking mechanism, the present invention provide a kind of connection for high-tension switch gear Locking device is driven using sliding slot, blocks the interlocking of disconnecting switch and earthing switch handle hole completely in the case of demand interlocks Device meets IP4X with panel cooperation, and simple and compact for structure, reliability is high, increases following interlock in addition:When ground connection is opened After closing ground connection, only when operation handle extraction could open cable chamber door.
One aspect of the present invention provides a kind of mechanical interlocks for high-tension switch gear, including on off state Instruction device, horizontal interlocking plate, isolated operation hole baffle and ground connection handle hole baffle;The on off state instruction device back side is set There is lug boss;The lock tongue for stretching out switch cabinet panel is fixed on horizontal interlocking plate;Lock tongue can drive horizontal interlocking plate keeping apart It closes and is moved between operable position, inoperable position and earthing switch operable position, and the lock tongue is in disconnecting switch Operable position, inoperable position and the equal lockable of earthing switch operable position;When disconnecting switch is connected, the protrusion Portion's barrier level interlock plate and lock tongue are moved toward earthing switch operable position;When ground switch earthing, the lug boss resistance Water blocking lateral jam plate and lock tongue are moved toward disconnecting switch operable position.
A most preferred embodiment according to the present invention, mechanical interlocks further includes resetting spring, for making horizontal interlocking Plate after operation handle is extracted, is voluntarily returned to when being slid to disconnecting switch operable position or earthing switch operable position Inoperable position.
A most preferred embodiment according to the present invention, the on off state instruction device pass through bar and three-stations load switch Main shaft be fixedly connected.
A most preferred embodiment according to the present invention, horizontal interlocking plate are equipped with on-position rib;When on off state refers to Showing device is when switching earthing position, the on-position rib and raised portion fits, and barrier level interlock plate is toward disconnecting switch Operable position moves.
A most preferred embodiment according to the present invention, horizontal interlocking plate are equipped with earthing position rib;For when switch shape State instruction device is at switch connection position, the earthing position rib and raised portion fits, the past ground connection of barrier level interlock plate Switch operable position movement.
A most preferred embodiment according to the present invention has lock tongue trepanning on lock tongue;Interlocking holder trepanning in interlock bracket; The lock tongue trepanning disconnecting switch operable position, inoperable position and earthing switch operable position respectively with difference Interlock bracket trepanning correspond to, lock lock tongue trepanning and interlock bracket trepanning to pass through so that lock tongue and horizontal interlocking plate exist Disconnecting switch operable position, inoperable position and earthing switch operable position are locked.
A most preferred embodiment according to the present invention, the isolated operation hole baffle chute on horizontal interlocking plate, is adapted to When horizontal interlocking plate is in disconnecting switch operable position, isolated operation hole baffle exposes isolated operation hole;At horizontal interlocking plate When inoperable position or earthing switch operable position, isolated operation hole baffle blocks isolated operation hole completely.
A most preferred embodiment according to the present invention, mechanical interlocks further includes cam, is fixed on earthing switch behaviour Make on axis;Further include Z-type locking plate, has thereon and the matched V-groove of cam.
A most preferred embodiment according to the present invention, mechanical interlocks further include couplet on the door lock pin;The Z-type locking plate tool There is one end of V-groove, close to cam;The other end is positioned at gate interlock pin top, on the door interlocking latch limit.
A most preferred embodiment according to the present invention, the bottom end of couplet on the door lock pin are stuck in the U-type groove of the fixture block of cable chamber door; Couplet on the door lock pin can move up and down in supporting block.
A most preferred embodiment according to the present invention, when earthing switch is not in ground connection, couplet on the door lock pin upper end is joined by Z-type Locking plate limits, and cannot move upwards;To which cable chamber door cannot disengage hook upwards, cable chamber door cannot be opened.
A most preferred embodiment according to the present invention, when ground switch earthing, cam is rotated with earthing switch operating shaft, Cam enters in the V-groove of Z-type locking plate upper end, and the sliding of Z-type locking plate, the limit of Z-type locking plate interlocking latch on the door is driven to take Disappear, cable chamber door can be opened.
A most preferred embodiment according to the present invention, mechanical interlocks further include vertical locking plate, are provided with thereon up and down Sliding groove;Vertical locking plate can vertically sliding groove be slided up and down with respect to interlock bracket;Vertical locking plate includes upper end bending part, Upper end bending part is provided with upper end slot, and the lower end of vertical locking plate is provided with card slot;The card slot can be caught in cable chamber door upper end.
A most preferred embodiment according to the present invention, works as ground switch earthing, and when operation handle is not extracted, level connection Jam plate is in earthing switch operable position, and the bottom fold of horizontal interlocking plate limits the upper end bending part of vertical locking plate, Vertical locking plate cannot move upwards, to which cable chamber door cannot disengage hook upwards;Cable chamber door cannot be opened.
After a most preferred embodiment according to the present invention works as ground switch earthing, and operation handle is extracted, horizontal interlocking plate Inoperable position is returned under the action of resetting spring, the upper end slot of vertical locking plate allowed the lower part of horizontal interlocking plate to roll over It is curved;To which vertical locking plate can vertically sliding groove be moved upwards with respect to interlock bracket, the limit that cable chamber door moves upwards is released Position;And then the hook of cable chamber door can disengage upwards, cable chamber door can be opened.
A most preferred embodiment according to the present invention, after cable chamber door is opened, effect of the vertical locking plate in resetting spring Under, it is maintained at the position of upper end;The bottom fold of horizontal interlocking plate is by the upper end bending part limit of vertical locking plate, horizontal interlocking Plate is limited to inoperable position.
Another aspect of the present invention provides a kind of high-tension switch gear, includes being used for height as described in any one of front The mechanical interlocks of voltage switching station.
Description of the drawings
Figure 1A -1B are the mechanical interlocks structural schematic diagrams for high-tension switch gear of the present invention;Wherein, Tu1AShi Positive structure schematic, Figure 1B are structure schematic diagrams;
Fig. 2 is the mechanical interlocks for high-tension switch gear of the present invention, and horizontal interlocking plate drives isolated operation hole Baffle arrangement schematic diagram;
Fig. 3 A-3C are the mechanical interlocks for high-tension switch gear of the present invention, three work of horizontal interlocking plate Position view;Wherein, Fig. 3 A show disconnecting switch operable position, can cannot be operated and be connect with disconnecting switch operation at this time Ground switchs;Inoperable position shown in Fig. 3 B, disconnecting switch and earthing switch cannot operate at this time;Fig. 3 C show ground connection and open Operable position is closed, disconnecting switch operation is unable at this time, can be switched with operational grounding;
Fig. 4 A-4B are the mechanical interlocks that the present invention is used for high-tension switch gear, are grounded switch and disconnecting switch Between interlock function structural schematic diagram;Wherein, Fig. 4 A show horizontal interlocking plate and are in inoperable position, at on-load switch In closing position;It is in inoperable position for horizontal interlocking plate as shown in Figure 4 B, on-load switch is in earthing position;
Fig. 5 A-5B are the mechanical interlocks that the present invention is used for high-tension switch gear, are grounded switch and cable chamber door The structural schematic diagram of interlock;Wherein, Fig. 5 A show earthing switch and are in gate-dividing state;Fig. 5 B are shown at earthing switch In ground state, the limit of Z-type locking plate interlocking latch on the door is cancelled;
Fig. 6 A-6B are the mechanical interlocks that the present invention is used for high-tension switch gear, realize cable chamber door and disconnecting switch, The structural schematic diagram of earthing switch interlock;Wherein, Fig. 6 A show ground switch earthing and operation handle is not extracted;Figure 6B show vertical locking plate and is maintained at position in figure under the action of resetting spring, and horizontal interlocking plate is by vertical locking plate upper end Fluting limit cannot move left and right.
Specific implementation mode
Below with reference to attached drawing, the specific descriptions of the optional embodiment of the present invention are given.
With reference to each attached drawing, the structure and function of the utility model interlock is described in detail.Such as Figure 1A and Figure 1B institutes It is shown as structural schematic diagram of the present invention for the mechanical interlocks of high-tension switch gear.
Fig. 2 is the mechanical interlocks for high-tension switch gear of the present invention, and horizontal interlocking plate drives isolated operation hole Baffle arrangement schematic diagram;
Fig. 3 A-3C are the mechanical interlocks for high-tension switch gear of the present invention, three work of horizontal interlocking plate Position view;Wherein, Fig. 3 A show disconnecting switch operable position, can cannot be operated and be connect with disconnecting switch operation at this time Ground switchs;Inoperable position shown in Fig. 3 B, disconnecting switch and earthing switch cannot operate at this time;Fig. 3 C show ground connection and open Operable position is closed, disconnecting switch operation is unable at this time, can be switched with operational grounding.
The mechanical interlocks that the present invention is used for high-tension switch gear includes on off state instruction device 42 (referring to Fig. 4 A- Shown in 4B), horizontal interlocking plate 13, isolated operation hole baffle 2 and ground connection handle hole baffle 4;The on off state instruction device 42 The back side is equipped with lug boss 43;The lock tongue 27 for stretching out switch cabinet panel is fixed on horizontal interlocking plate 13;Lock tongue 27 can drive level Interlock plate 13 moves between disconnecting switch operable position, inoperable position and earthing switch operable position.
And the lock tongue 27 is in disconnecting switch operable position (as shown in Figure 3A), inoperable position (such as Fig. 3 B institutes Show) and earthing switch operable position (as shown in Figure 3 C) equal lockable;When disconnecting switch is connected, the lug boss 43 stops Horizontal interlocking plate 13 and lock tongue 27 are (as shown in Figure 3 C) mobile toward earthing switch operable position;When ground switch earthing, institute It is (as shown in Figure 3A) mobile toward disconnecting switch operable position to state 43 barrier level interlock plate 13 of lug boss and lock tongue 27.
If Fig. 2 is horizontal interlocking plate driving isolated operation hole baffle arrangement schematic diagram, isolated operation hole baffle 2 passes through rivet 25 is hinged with interlock bracket 1, and the fixed bolt on isolated operation hole baffle 2 sequentially passes through via, horizontal connection in interlock bracket 1 Sliding slot, gasket 23, copper sheathing 22 on jam plate 13.Stop nut compresses copper sheathing 22, and fixed bolt can slide in sliding slot;Level connection The lock tongue 27 for stretching out switch cabinet panel is fixed on jam plate 13, operating personnel can slide lock tongue 27 in the horizontal direction, horizontal at this time Sliding slot on interlock plate 13 drives isolated operation hole baffle 2 to rotate by fixed bolt, realizes when horizontal interlocking plate 13 is in not Isolated operation hole can be blocked or open completely with handle hole baffle 2 is isolated when operating position.The driving ground connection operation of horizontal interlocking plate The principle and structure of hole baffle are identical with this.
As shown in Figure 3A, horizontal interlocking plate 13 is located at disconnecting switch operable position, and corresponding isolated operation hole baffle 2 is beaten It opens, can be grounded handle hole baffle 4 with disconnecting switch operation and close, be unable to operational grounding switch.
As shown in Figure 3B, horizontal interlocking plate 13 is in inoperable position, and corresponding isolated operation hole baffle 2 and ground connection are grasped Make hole baffle 4 to be turned off, disconnecting switch and earthing switch cannot operate;As shown in Figure 3 C, horizontal interlocking plate 13 is in ground connection Operable position is switched, corresponding isolated operation hole baffle 2 is closed, and disconnecting switch operation is unable to, and ground connection handle hole baffle 4 is beaten It opens, can be switched with operational grounding.As shown in the figure 100 be operating mechanism, is isolated to on-load switch by operating mechanism, is connected And ground connection operation.
Most preferred embodiment according to the present invention is used for the mechanical interlocks of high-tension switch gear, further includes resetting spring 24,26, for making horizontal interlocking plate 13 after being slid to disconnecting switch operable position or earthing switch operable position, when After operation handle is extracted, inoperable position can be voluntarily returned to.As shown in figs. 3 a-3 c, resetting spring 24 and resetting spring 26 It is hooked on the bending part of interlock bracket 1 and horizontal interlocking plate 13 so that horizontal interlocking plate 13 is sliding into the left side by operating personnel Or behind the operating position on the right, as shown in figs. 3 a and 3 c, intermediate operating position can be voluntarily returned to, such as Fig. 3 B.
Fig. 4 A- Fig. 4 B are the mechanical interlocks that the present invention is used for high-tension switch gear, are grounded switch and keep apart The schematic diagram of interlock function between pass.On off state instruction device 42 is directly solid by bar 4201 and three-stations load switch main shaft Even, it is used to indicate the operating position residing for on-load switch.When on off state instruction device 42 be in when switching earthing position, i.e., On-load switch is grounded;When on off state instruction device 42 is in switch connection position, i.e., on-load switch is connected, or load is claimed to open Close lock.
As shown in Figure 4 A, on-load switch is in on-position in figure, i.e. disconnecting switch is connected, and horizontal interlocking plate 13 is equipped with Earthing position rib 132, when horizontal interlocking plate 13 is in inoperable position, the protrusion at 42 back side of on off state instruction device Position-limiting action plays to horizontal interlocking plate 13 in portion 43, and blocking earthing position rib 132 is further to movement on the left of Fig. 4 A, level connection Jam plate 13 can only slide between disconnecting switch operable position and inoperable position, cannot reach the operable position of earthing switch It sets, that is, is unable to operational grounding switch.
As shown in Figure 4 B, on-load switch is in earthing position, i.e. ground switch earthing in figure, and horizontal interlocking plate 13 is equipped with On-position rib 131.When horizontal interlocking plate 13 is in inoperable position, the protrusion at 42 back side of on off state instruction device Position-limiting action plays to horizontal interlocking plate 13 in portion 43, and blocking on-position rib 131 is further to movement on the right side of Fig. 4 B;Level connection Jam plate 13 can only slide between inoperable position and earthing switch operable position, cannot reach the operable position of disconnecting switch It sets, that is, is unable to disconnecting switch operation.
Most preferred embodiment according to the present invention has lock tongue trepanning 271 as shown in figs. 3 a-3 c on lock tongue 27;Interlock bracket 1 Upper interlocking holder trepanning 401,402,403;The lock tongue trepanning 271 is in disconnecting switch operable position, inoperable position It sets and is corresponded to respectively from different interlock bracket trepannings 401,402,403 with earthing switch operable position, to be opened by lock tongue The locking in hole and interlock bracket trepanning so that lock tongue 27 and horizontal interlocking plate 13 are in disconnecting switch operable position, inoperable Position and earthing switch operable position are locked.
It is provided with isolated operation hole baffle chute 133 (as shown in Figure 2) on horizontal interlocking plate 13, is adapted to horizontal interlocking plate 13 when being in disconnecting switch operable position, and isolated operation hole baffle 2 exposes isolated operation hole 21;Horizontal interlocking plate 13 is in not When operable position or earthing switch operable position, isolated operation hole baffle 2 blocks isolated operation hole 21 completely.Such as Fig. 3 B- Shown in 3A, when pushing lock tongue 27 to the left, and horizontal interlocking plate 13 being driven to move downward, horizontal interlocking plate 13 can drive screw rod 2101 slide (with reference to the rear view of figure 4A-4B) in sliding slot 133, to drive isolated operation hole baffle 2 to rotate so that dew Go out isolated operation hole 21.So as to insertion operation handle, disconnecting switch be isolated-connect or connection-isolated operation.
It is also provided with ground connection handle hole baffle chute 134 (as shown in Figure 2) on horizontal interlocking plate 13, is adapted to horizontal interlocking When plate 13 is in earthing switch operable position, ground connection handle hole baffle 4 exposes ground connection handle hole 41;Horizontal interlocking plate 13 is in When inoperable position or disconnecting switch operable position, ground connection handle hole baffle 4 blocks ground connection handle hole 41 completely.Such as figure Shown in 3B-3C, when pushing lock tongue 27 to the right, and horizontal interlocking plate 13 being driven to move right, horizontal interlocking plate 13 can drive spiral shell Bar 2102 slides (with reference to figure 4A-4B) in sliding slot 134, to drive ground connection handle hole baffle 4 to rotate so that expose ground connection behaviour Make hole 41.So as to insertion operation handle, disconnecting switch be isolated-be grounded or ground connection-isolated operation.
Fig. 5 A-5B are the mechanical interlocks for high-tension switch gear of the present invention, are grounded switch and cable vault The structural schematic diagram of 200 interlocks of door.Most preferred embodiment according to the present invention, the mechanical interlocking for high-tension switch gear fill Set further includes cam 51, couplet on the door lock pin 7 and Z-type locking plate 10.Cam 51 is fixed in earthing switch operating shaft 300;Z-type interlocks Have on piece 10 and 51 matched V-groove 101 of cam.Z-type locking plate 10 has one end of V-groove 101, close to cam 51;It is another End is positioned at 7 top of gate interlock pin, on the door interlocking latch limit.The other end of couplet on the door lock pin 7 is stuck in the fixture block 54 of cable chamber door 200 U-type groove in 541;Couplet on the door lock pin 7 can move up and down in supporting block 8.
When being in gate-dividing state as shown in Figure 5A for earthing switch, i.e., earthing switch is unearthed, and cam 51 is consolidated in ground connection On switching manipulation axis 300, Z-type locking plate 10 horizontal sliding, supporting block 8 can be stuck on cross beams of switch cabinet in interlock bracket, this When due to by Z-type locking plate 10 being pushed down and cannot be moved upwards in 7 upper end of couplet on the door lock pin, to which cable chamber door 200 cannot disengage upwards Hook 2001, cable chamber door 200 cannot be opened.
When ground switch earthing, cam 51 is rotated with earthing switch operating shaft 300, and the cylindrical structure on cam 51 enters In the V-groove 101 of 10 upper end of Z-type locking plate, Z-type locking plate 10 is driven to slide to the left, at this time as shown in Figure 5 B.Z-type locking plate The limit of 10 interlocking latches 7 on the door is cancelled, and cable chamber door 200 can be opened.Cable chamber door 200 opens back door interlocking latch in spring 52 and retainer ring 53 under the action of be maintained at and bounce position.
Fig. 6 A-6B are the mechanical interlocks for high-tension switch gear of the present invention, realize cable chamber door 200 and are isolated The structural schematic diagram of switch, earthing switch interlock.For existing interlocking, after ground switch earthing, even if manipulator Handle is not extracted, and cable chamber door 200 can also be opened, if earthing switch is got to open position again at this time, is just had to operator The security risk of member.
Therefore, the present invention with lower structure by realizing the interlock.Most preferred embodiment according to the present invention, interlock Further include vertical locking plate 5, is provided with slides up and down slot 505 thereon;Vertical locking plate 5 can the vertically opposite interlocking of sliding groove 505 Holder 1 slides up and down;Vertical locking plate 5 includes upper end bending part 501, and upper end bending part 501 is provided with upper end slot 5011, vertical to join The lower end of locking plate 5 is provided with card slot 5022;The card slot 5022 can be caught in 200 upper end dogleg section of cable chamber door.
As shown in Figure 6A, when ground switch earthing and operation handle is not extracted, horizontal interlocking plate 13 is in earthing switch The bottom fold 1301 of operable position, horizontal interlocking plate limits the upper end bending part 501 of vertical locking plate, vertical locking plate 5 cannot move upwards, to which cable chamber door 200 cannot disengage hook 2001 upwards;Cable chamber door 200 cannot be opened.
After operation handle is extracted, horizontal interlocking plate 13 returns to inoperable position under the action of resetting spring 24,26, The upper end slot 5011 of vertical locking plate 5, allowed the bottom fold 1301 of horizontal interlocking plate 13;To which vertical locking plate 5 can be along upper Lower slider slot 505 is moved upwards with respect to interlock bracket 1, releases the limit that cable chamber door 200 moves upwards;And then cable chamber door 200 hook 2001 can disengage upwards, and cable chamber door 200 can be opened.
After cable chamber door 200 is opened, as shown in Figure 6B, vertical locking plate 5 be maintained under the action of resetting spring 6 as The position of upper end as shown in the figure, horizontal interlocking plate cannot be moved left and right by the fluting limit of vertical locking plate upper end, i.e. cable chamber door Disconnecting switch and earthing switch cannot operate when 200 opening.
Most preferred embodiment according to the present invention also provides a kind of high-tension switch gear comprising three-station and as before Any one mechanical interlocking device described in face.So that high-tension switch gear realizes that when ground switch earthing, disconnecting switch is not It can operation;When disconnecting switch closes, earthing switch cannot operate;Only when ground switch earthing, cable chamber door could be beaten It opens;After ground switch earthing, only when operation handle extraction could open cable chamber door, when cable chamber door is opened, ground connection is opened It closes and disconnecting switch cannot operate.
In conclusion provided by the present invention for the mechanical interlocks and switchgear of high-tension switch gear, pass through connection Spacing relation between locking plate and on off state instruction device can realize following interlock:When ground switch earthing, every Leaving pass cannot operate;When disconnecting switch closes, earthing switch cannot operate;Pass through the limit to vertical locking plate and interlocking latch Potential energy enough realizes following interlock:Only when ground switch earthing, cable chamber door could be opened;Work as ground switch earthing Afterwards, only when operation handle extraction could open cable chamber door;When cable chamber door is opened, earthing switch and disconnecting switch cannot Operation.In addition, the present invention can coordinate switch cabinet panel to meet the requirement of IP4X on the basis of realizing interlock.
Although disclosing presently preferred embodiments of the present invention and attached drawing for the purpose of illustration, the people of skilled Member can make various replacements, variation and retouching without departing from the spirit and scope of the invention and the appended claims.Therefore, The present invention should not be limited to preferred embodiment and attached drawing disclosure of that, and protection scope of the present invention is with the attached claims Subject to the range that book is defined.

Claims (16)

1. a kind of mechanical interlocks for high-tension switch gear, including on off state instruction device (42), it is characterised in that: Further include horizontal interlocking plate (13), isolated operation hole baffle (2) and ground connection handle hole baffle (4);
On off state instruction device (42) back side is equipped with lug boss (43);Stretching switch is fixed on horizontal interlocking plate (13) The lock tongue (27) of cabinet panel;
Lock tongue (27) can drive horizontal interlocking plate (13) can in disconnecting switch operable position, inoperable position and earthing switch It is moved between operating position, and the lock tongue (27) is in disconnecting switch operable position, inoperable position and earthing switch The equal lockable of operable position;
When disconnecting switch is connected, lug boss (43) the barrier level interlock plate (13) and lock tongue (27) can be grasped toward earthing switch Make position movement;
When ground switch earthing, lug boss (43) the barrier level interlock plate (13) and lock tongue (27) can be grasped toward disconnecting switch Make position movement.
2. the mechanical interlocks according to claim 1 for high-tension switch gear, it is characterised in that:Further include resetting Spring (24,26), for making horizontal interlocking plate (13) be slid to disconnecting switch operable position or earthing switch is operable When position, after operation handle is extracted, inoperable position is voluntarily returned to.
3. the mechanical interlocks according to claim 1 for high-tension switch gear, it is characterised in that:The switch shape State instruction device (42) is fixedly connected by bar (4201) with the main shaft of three-stations load switch.
4. the mechanical interlocks according to claim 1 for high-tension switch gear, it is characterised in that:Horizontal interlocking plate (13) it is equipped with on-position rib (131);When on off state instruction device (42) is when switching earthing position, the connection position It sets rib (131) with lug boss (43) to coordinate, barrier level interlock plate (13) is moved toward disconnecting switch operable position.
5. the mechanical interlocks according to claim 1 for high-tension switch gear, it is characterised in that:Horizontal interlocking plate (13) it is equipped with earthing position rib (132);It is described to connect for working as on off state instruction device (42) at switch connection position Position rib (132) coordinates with lug boss (43), and barrier level interlock plate (13) is moved toward earthing switch operable position.
6. according to the mechanical interlocks for high-tension switch gear described in claim 1-5 any one, it is characterised in that: There is lock tongue trepanning (271) on lock tongue (27);Interlocking holder trepanning (401,402,403) in interlock bracket (1);The lock tongue Trepanning (271) disconnecting switch operable position, inoperable position and earthing switch operable position respectively from different connection Lock support trepanning (401,402,403) is corresponding, and lock tongue trepanning and interlock bracket trepanning are locked to pass through so that lock tongue (27) and Horizontal interlocking plate (13) is locked in disconnecting switch operable position, inoperable position and earthing switch operable position.
7. the mechanical interlocks according to claim 6 for high-tension switch gear, it is characterised in that:Horizontal interlocking plate (13) the isolated operation hole baffle chute (133) on is adapted to horizontal interlocking plate (13) and is in disconnecting switch operable position When, isolated operation hole baffle (2) exposes isolated operation hole (21);Horizontal interlocking plate (13) is in inoperable position or ground connection is opened When closing operable position, isolated operation hole baffle (2) blocks isolated operation hole (21) completely.
8. according to the mechanical interlocks for high-tension switch gear described in claim 1-5 any one, it is characterised in that: Further include cam (51), is fixed in earthing switch operating shaft (300);Further include Z-type locking plate (10), has thereon and cam (51) matched V-groove (101).
9. the mechanical interlocks according to claim 8 for high-tension switch gear, it is characterised in that:It further include the couplet on the door Lock pin (7);The Z-type locking plate (10) has one end of V-groove (101), close to cam (51);The other end is positioned at gate interlock (7) top is sold, interlocking latch limits on the door.
10. the mechanical interlocks according to claim 9 for high-tension switch gear, it is characterised in that:The couplet on the door The bottom end of lock pin (7) is stuck in the U-type groove of the fixture block (54) of cable chamber door (200) (541);Couplet on the door lock pin (7) can be in supporting block (8) it moves up and down in.
11. the mechanical interlocks according to claim 10 for high-tension switch gear, it is characterised in that:When ground connection is opened When pass is not in ground connection, couplet on the door lock pin (7) upper end is limited by Z-type locking plate (10), cannot be moved upwards;To cable chamber door (200) hook (2001) cannot be disengaged upwards, and cable chamber door (200) cannot be opened.
12. the mechanical interlocks according to claim 10 for high-tension switch gear, it is characterised in that:When ground connection is opened When closing ground connection, cam (51) is rotated with earthing switch operating shaft (300), and cam (51) enters the V-type of Z-type locking plate (10) upper end In slot (101), Z-type locking plate (10) is driven to slide, the limit of Z-type locking plate (10) interlocking latch (7) on the door is cancelled, cable chamber door (200) it can be opened.
13. the mechanical interlocks according to claim 10 for high-tension switch gear, it is characterised in that:Further include erecting Direct connection locking plate (5) is provided with slides up and down slot (505) thereon;Vertical locking plate (5) can the vertically opposite interlocking of sliding groove (505) Holder (1) slides up and down;Vertical locking plate (5) includes upper end bending part (501), and upper end bending part (501) is provided with upper end slot (5011), the lower end of vertical locking plate (5) is provided with card slot (5022);The card slot (5022) can be caught on cable chamber door (200) End.
14. the mechanical interlocks according to claim 13 for high-tension switch gear, it is characterised in that:When ground connection is opened Ground connection is closed, and when operation handle is not extracted, horizontal interlocking plate (13) is in earthing switch operable position, horizontal interlocking plate Bottom fold (1301) limits the upper end bending part (501) of vertical locking plate, and vertical locking plate (5) cannot move upwards, from And cable chamber door (200) cannot disengage hook (2001) upwards;Cable chamber door (200) cannot be opened.
15. the mechanical interlocks according to claim 13 for high-tension switch gear, it is characterised in that:When ground connection is opened Ground connection is closed, and after operation handle extraction, horizontal interlocking plate (13) returns to inoperable position under the action of resetting spring (24,26) It sets, the upper end slot (5011) of vertical locking plate (5), allowed the bottom folds (1301) of horizontal interlocking plate (13);To join vertically Locking plate (5) can vertically sliding groove (505) be moved upwards with respect to interlock bracket (1), release what cable chamber door (200) moved upwards Limit;And then the hook (2001) of cable chamber door (200) can disengage upwards, cable chamber door (200) can be opened.
16. a kind of high-tension switch gear, including three-station, it is characterised in that:Further include as claim 1-15 is any one The mechanical interlocks for high-tension switch gear described in.
CN201510811085.6A 2015-11-20 2015-11-20 Mechanical interlocks and high-tension switch gear for high-tension switch gear Active CN106783279B (en)

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CN109285719B (en) * 2018-10-19 2020-03-17 四川行之知识产权运营服务有限公司 Hanging type cable chamber door and grounding switch interlocking mechanism

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