CN201307531Y - Five-prevention blocking device of switchgear - Google Patents
Five-prevention blocking device of switchgear Download PDFInfo
- Publication number
- CN201307531Y CN201307531Y CNU2008202040959U CN200820204095U CN201307531Y CN 201307531 Y CN201307531 Y CN 201307531Y CN U2008202040959 U CNU2008202040959 U CN U2008202040959U CN 200820204095 U CN200820204095 U CN 200820204095U CN 201307531 Y CN201307531 Y CN 201307531Y
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- connecting rod
- shape connecting
- depression bar
- trisquare shape
- cabinet
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- Expired - Fee Related
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- 230000000903 blocking Effects 0.000 title abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000002965 rope Substances 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000994 depressed Effects 0.000 description 2
- 230000001737 promoting Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 1
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Abstract
Disclosed is a five-prevention blocking device of a switchgear, which comprises a cabinet body; wherein the cabinet body is provided with a front door and a back door; a circuit breaker, an earthing switch and an isolating switch are arranged in the cabinet body; the circuit breaker is provided with an opening mechanism and a closing mechanism; wherein the opening mechanism is provided with an open button, and the closing mechanism is provided with a close button and a close pressure lever; the earthing switch is provided with an earthing switch pull rod and an earthing switch pressure lever; and the isolating switch is provided with an isolating switch turntable. The blocking device is characterized in that a first set of blocking assembly is arranged between the front door, the back door and the circuit breaker open button; a second set of blocking assembly is arranged between the front door, the back door and the circuit breaker close pressure lever and the earthing switch pull rod; and a third set of blocking assembly is arranged between the isolating switch turntable, the earthing switch pressure lever and the circuit breaker close button. The five-prevention blocking device of the switchgear leads the whole operation of the circuit breaker to comply with the safety operation regulations, and has high reliable action, uneasy misoperation and simple structure.
Description
Technical field
The utility model belongs to the technical field of mains switch cabinet, is specifically related to a kind of five-defence block device of switch cubicle.
Background technology
The five-defence block function of switch cubicle is to realize in the operational procedure of two kinds of operating states of switch cubicle, and these two kinds of operating states are exactly " "on" position " and " power down mode ".Down must meet " power failure operational procedure " at " power down mode ", that is: 1, divide circuit breaker---to prevent on-load deciliter isolating switch---to be down operation together that condition is provided; 2, branch is kept apart the pass---prevent to close circuit breaker by mistake; 3, closing the ground cutter---prevents charged splice grafting ground switch---and prevents super operation; 4, close circuit breaker---prevent mistakenly entering charged chamber, prevent super operation; 5, open the front and back door---guarantee the safety at charged interval; And down must meet " sending electric operational procedure " in " "on" position ", that is: 1, close before and after door---prevent mistake divide circuit breaker be simultaneously down together operation condition is provided; 2, divide circuit breaker---prevent mistakenly entering charged chamber, prevent super operation; 3, divide the ground cutter---prevent to close circuit breaker by mistake, prevent super operation; 4, close isolating switch---prevent on-load deciliter isolating switch; 5, close circuit breaker---prevent on-load deciliter isolating switch.
The five-defence block structure of switch cubicle product just adopts simple closedown structure mode in the market, and its unreasonable structure, reliability are not high, and also there is potential safety hazard in easy misoperation.
Summary of the invention
The purpose of this utility model is the five-defence block device that a kind of switch cubicle is provided at the above-mentioned deficiency of prior art, and it can realize the blocking function of high reliability and high security.
For achieving the above object, the five-defence block device of the utility model switch cubicle comprises cabinet, cabinet is provided with Qianmen and back door, circuit breaker, ground connection cutter, isolating switch are installed in cabinet, circuit breaker is provided with brake separating mechanism and switching-on mechanism, wherein brake separating mechanism is provided with opening button, switching-on mechanism is provided with switch knob and combined floodgate depression bar, the ground connection cutter is provided with ground connection cutter pull bar and ground connection cutter depression bar, isolating switch is provided with the isolating switch rotating disk, its main feature is, is provided with the first cover locking assembly between the opening button of Qianmen, back door and circuit breaker; Be provided with the second cover locking assembly between Qianmen, back door and breaker closing depression bar, the ground connection cutter pull bar; Be provided with the 3rd cover locking assembly between isolating switch rotating disk, ground connection cutter depression bar and the breaker closing button.
The first cover locking assembly comprises two horizontal struts, two trisquare shape connecting rods, two steel wire ropes, two opening button cover plates that can hide the breaker open operation button; Every opening button cover plate is installed in rotation on the cabinet, and every opening button cover plate also is provided with back-moving spring; Every trisquare shape connecting rod is rotatably mounted on the cabinet, and the rotation axis of trisquare shape connecting rod is positioned at its medium position; Above-mentioned every horizontal struts is fanned the wherein Yishanmen of door respectively near front and back two, every horizontal struts connects a wherein end of a trisquare shape connecting rod, the other end of every trisquare shape connecting rod connects a wherein end of a steel wire rope, and the other end of every steel wire rope connects wherein opening button cover plate.
The second cover locking assembly comprises trisquare shape connecting rod, horizontal push, vertical depression bar, fork, and Qianmen and back door correspondence respectively are provided with a bolt rod; Trisquare shape connecting rod is rotatably mounted in the cabinet, and the rotation axis of trisquare shape connecting rod is positioned at its medium position; Vertical depression bar is installed in rotation in the cabinet, and the roller pin of vertical depression bar can be installed in the vertical guide of cabinet up or down; Fork is hinged with the lower end of vertical depression bar, and vertical depression bar is positioned at breaker closing depression bar below, and an end of horizontal push is leaning the side, upper end of vertical depression bar; One end of the other end of horizontal push and trisquare shape connecting rod is hinged; The other end and the ground connection cutter pull bar of trisquare shape connecting rod are hinged; The second cover locking assembly also is provided with and can promotes second back-moving spring that two bolt rods insert Qianmen and back door respectively, and can promote the vertical depression bar back-moving spring that rotate vertical depression bar upper end; Be provided with transmission mechanism between fork and two bolt rods.
The 3rd cover locking assembly comprises a whole tying rod, U-shaped adjustable shelf, the first horizontal branch pull bar, the second horizontal branch pull bar, stay cord, switch knob cover plate, the trisquare shape connecting rod that can hide the breaker closing button; Trisquare shape connecting rod is rotatably mounted in the cabinet, and the rotation axis of trisquare shape connecting rod is positioned at its medium position; The switch knob cover plate is installed in rotation in the cabinet, and the switch knob cover plate is connected with back-moving spring; The switch knob cover plate connects stay cord, stay cord connects whole tying rod, whole tying rod is fixedlyed connected with the U-shaped adjustable shelf, two flanks of U-shaped adjustable shelf are respectively equipped with slotted hole, one end of the first horizontal branch pull bar, the second horizontal branch pull bar is equipped with bolt respectively, in the slotted hole of a wherein flank of every bolt insertion U-shaped adjustable shelf; The first horizontal branch pull bar is fixedly connected with a straight-bar; The other end of the second horizontal branch pull bar connects an end of trisquare shape connecting rod, and the other end and the ground connection cutter depression bar of trisquare shape connecting rod are hinged; The isolating switch rotating disk is connected with projection, and projection is formed with first side and second side.
The utlity model has following advantage and effect:
1, blocking function between the brake separating mechanism of door and circuit breaker before and after the first cover locking assembly of the present utility model can be realized, blocking function before and after the second cover locking assembly can be realized between door and breaker switching-on mechanism, the ground connection cutter pull bar, the 3rd cover locking assembly can be realized the blocking function between isolating switch rotating disk, ground connection cutter depression bar and the breaker switching-on mechanism; Make the operation of whole circuit breaker can meet safety regulation for operations, and the reliable in action height, be not easy misoperation, simple in structure.
Description of drawings
Fig. 1 is the structure and the operation principle schematic diagram of the utility model embodiment first cover locking assembly.
Fig. 2 is structure and first kind of working state schematic representation of the utility model embodiment second cover locking assembly.
Fig. 3 is structure and second kind of working state schematic representation of the utility model embodiment second cover locking assembly.
Fig. 4 is facade structures and first kind of working state schematic representation of the utility model embodiment the 3rd cover locking assembly.
Fig. 5 is that the plan position approach of the first horizontal branch pull bar among Fig. 4, the second horizontal branch pull bar and whole tying rod concerns schematic diagram.
Fig. 6 is facade structures and second kind of working state schematic representation of the utility model embodiment the 3rd cover locking assembly.
Fig. 7 is that the plan position approach of the first horizontal branch pull bar among Fig. 6, the second horizontal branch pull bar and whole tying rod concerns schematic diagram.
Fig. 8 is facade structures and the third working state schematic representation of the utility model embodiment the 3rd cover locking assembly.
Fig. 9 is that the plan position approach of the first horizontal branch pull bar among Fig. 8, the second horizontal branch pull bar and whole tying rod concerns schematic diagram.
Figure 10 is the dish of the swivel isolator structural representation of the 3rd cover locking assembly.
Embodiment
Fig. 1, Fig. 2, Fig. 4, shown in Figure 5, the switchgear five-defence block device of the utility model embodiment comprises cabinet, cabinet is provided with Qianmen 4, back door 5, circuit breaker is installed in cabinet, the ground connection cutter, isolating switch, circuit breaker is provided with brake separating mechanism and switching-on mechanism, wherein breaker open operation mechanism is provided with opening button 6, breaker switching-on mechanism is provided with switch knob 71 and combined floodgate depression bar 20, the ground connection cutter is provided with ground connection cutter pull bar 81 and ground connection cutter depression bar 82, isolating switch is provided with isolating switch rotating disk 9, be provided with the first cover locking assembly between the opening button 6 of front and back door and circuit breaker, front and back door and breaker closing depression bar 20, be provided with the second cover locking assembly between the ground connection cutter pull bar 81, isolating switch rotating disk 9, be provided with the 3rd cover locking assembly between ground connection cutter depression bar 82 and the breaker closing button 71.
Shown in Figure 1, the first cover locking assembly comprises two horizontal struts 11, two trisquare shape connecting rods 12, two steel wire ropes 13, two opening button cover plates 14 that can hide the breaker open operation button; Every opening button cover plate 14 is installed in rotation on the cabinet and is connected with back-moving spring 15; Every trisquare shape connecting rod 12 is rotatably mounted on the cabinet, and the rotation axis 121 of trisquare shape connecting rod is positioned at its medium position; Above-mentioned every horizontal struts 11 is fanned the wherein Yishanmen of door respectively near front and back two, every horizontal struts 11 connects a wherein end of a trisquare shape connecting rod 12, the other end of every trisquare shape connecting rod 12 connects a wherein end of a steel wire rope 13, and the other end of every steel wire rope 13 connects wherein opening button cover plate 14.
Fig. 2, shown in Figure 3, the second cover locking assembly comprises trisquare shape connecting rod 21, horizontal push 22, vertical depression bar 23, fork 25, Qianmen 4 and back door 5 correspondence respectively are provided with a bolt rod 27; Trisquare shape connecting rod 21 is rotatably mounted in the cabinet, and the rotation axis 211 of trisquare shape connecting rod 21 is positioned at its medium position; Vertical depression bar 23 is installed in rotation in the cabinet, and the roller pin 231 of vertical depression bar can be installed in the vertical guide of cabinet up or down; Fork 25 is hinged with the lower end of vertical depression bar 23, and vertical depression bar 23 is positioned at breaker closing depression bar 20 belows, and an end of horizontal push 22 is leaning the side, upper end of vertical depression bar 23; One end of the other end of horizontal push 22 and trisquare shape connecting rod 21 is hinged; The other end and the ground connection cutter pull bar 81 of trisquare shape connecting rod 21 are hinged; The second cover locking assembly also is provided with and can spurs second back-moving spring 28 that two bolt rods insert Qianmen and back door respectively, and can drive the vertical depression bar back-moving spring 29 that the upper end rotation of vertical depression bar resets; Be provided with transmission mechanism 24 between fork 28 and two bolt rods 27.
Fig. 4, shown in Figure 5, the 3rd cover locking assembly comprise a whole tying rod 31, U-shaped adjustable shelf 32, the first horizontal branch pull bar 331, the second horizontal branch pull bar 332, stay cord 34, switch knob cover plate 35, the trisquare shape connecting rod 36 that can hide the breaker closing button; Trisquare shape connecting rod 36 is rotatably mounted in the cabinet, and the rotation axis 361 of trisquare shape connecting rod is positioned at its medium position; Switch knob cover plate 35 is installed in rotation in the cabinet and is connected with back-moving spring 30; Switch knob cover plate 35 connects stay cord 34, stay cord 34 connects whole tying rod 31, whole tying rod 31 is fixedlyed connected with U-shaped adjustable shelf 32, two flanks of U-shaped adjustable shelf are respectively equipped with slotted hole 323, one end of the first horizontal branch pull bar, the second horizontal branch pull bar is respectively equipped with bolt 37, in the slotted hole 323 of a wherein flank of every bolt 37 insertion U-shaped adjustable shelfs; The first horizontal branch pull bar 331 is fixedly connected with a straight-bar 38; The other end of the second horizontal branch pull bar 332 connects an end of trisquare shape connecting rod 36, and the other end and the ground connection cutter depression bar 82 of trisquare shape connecting rod 36 are hinged; Isolating switch rotating disk 9 is connected with projection 39, and projection 39 is formed with first side 391 and second side 392.
Above-mentioned first locking assembly operating principle in the course of the work is as shown in Figure 1:, when Qianmen 4 or back door 5 are closed, promoting corresponding horizontal depression bar 11 moves, driving corresponding trisquare shape connecting rod 12 rotates, draw corresponding steel wire rope 13 and draw back corresponding opening button cover plate 14, thereby open breaker open operation push-botton operation hole.Like this, only when the front and back door is all closed, two opening button cover plates 14 all could be opened, just can be opened breaker open operation push-botton operation hole, ability operating breaker opening button 6 could be divided circuit breaker.
Above-mentioned second locking assembly operating principle such as Fig. 2, shown in Figure 3 in the course of the work:
When the ground connection cutter closes a floodgate, upwards spur ground connection cutter pull bar 81, shown in Fig. 2 arrow, driving trisquare shape connecting rod 21 clockwise rotates, promoting horizontal push 22 moves right, horizontal push 22 drives vertical depression bar 23 and moves to the position of aiming at circuit breaker depression bar 20, if at this moment again with breaker closing, just depress circuit breaker depression bar 20, circuit breaker depression bar 20 can be depressed vertical depression bar 23 simultaneously, and moving downward of vertical depression bar 23 drives fork 25 rotations, and two bolt rods 27 of door were to middle indentation before and after fork 25 drove by transmission mechanism 7, shown in Fig. 2 arrow, Qianmen 4 and back door 5 releases simultaneously at this moment can be opened.
When ground connection cutter separating brake, depress ground connection cutter pull bar 81, shown in Fig. 3 arrow, driving trisquare shape connecting rod 21 counterclockwise rotates, promote horizontal push 22 to left movement, vertical depression bar 23 backswing under the effect of the elastic force of vertical depression bar back-moving spring 29 (counter-clockwise swing is turned left partially), move to the position of departing from circuit breaker depression bar 20 lower ends, left the compacting of circuit breaker depression bar 20; At this moment counterclockwise rotate under fork 25 acts in second back-moving spring 28, two bolt rods 27 of front and back door stretch out laterally, and Qianmen 4 and back door 5 can not be opened by locking simultaneously.
Above-mentioned the 3rd locking assembly operating principle in the course of the work is as follows:
When swivel dish isolator 9 counterclockwise turns to position shown in Figure 4, isolating switch closes a floodgate, ground connection cutter separating brake, first side 391 of swivel dish projection promotes straight-bar 38 left isolator, straight-bar 38 drives the first horizontal branch pull bar 331 and moves right, driving U-shaped adjustable shelf 32 moves right with whole tying rod 31, whole tying rod 31 traction stay cords 34 pulling switch knob cover plates 35 clockwise rotate, open breaker closing push-botton operation hole, expose breaker closing button 71, can carry out closing operation, Fig. 4, shown in Figure 5.
When swivel dish 9 isolator changes 90 ° to state shown in Figure 6 by state clockwise direction shown in Figure 4, isolating switch separating brake, ground connection cutter separating brake, at this moment swivel dish 9 does not touch straight-bar 38 or ground connection cutter depression bar upper end isolator, the first horizontal branch pull bar 331 and the second horizontal branch pull bar 332 recover nature, stay cord 34 does not produce pulling force to combined floodgate button cover plate 35, switch knob cover plate 35 rotates counterclockwise under the effect of back-moving spring 30 and resets, block breaker closing push-botton operation hole, so just can not operating breaker switch knob 71, circuit breaker can not close a floodgate.
When swivel dish 9 isolator changes 90 ° to state shown in Figure 8 by state clockwise direction shown in Figure 6 again, the isolating switch separating brake, the ground connection cutter closes a floodgate, second side 392 of swivel dish projection is depressed ground connection cutter depression bar 82 downwards isolator, ground connection cutter depression bar 82 drives trisquare shape connecting rod 36 and clockwise rotates, one end of trisquare shape connecting rod 36 drives the second horizontal branch pull bar 332 and moves right, the second horizontal branch pull bar 332 drives U-shaped adjustable shelf 32 and moves right with whole tying rod 31, whole tying rod 31 traction stay cords 34 pulling switch knob cover plates 35 clockwise rotate, open breaker closing push-botton operation hole, expose breaker closing button 71, at this moment circuit breaker can close a floodgate.
Claims (4)
1. the five-defence block device of a switch cubicle, comprise cabinet, cabinet is provided with Qianmen and back door, circuit breaker, ground connection cutter, isolating switch are installed in cabinet, circuit breaker is provided with brake separating mechanism and switching-on mechanism, wherein brake separating mechanism is provided with opening button, switching-on mechanism is provided with switch knob and combined floodgate depression bar, the ground connection cutter is provided with ground connection cutter pull bar and ground connection cutter depression bar, isolating switch is provided with the isolating switch rotating disk, it is characterized in that: be provided with the first cover locking assembly between the opening button of Qianmen, back door and circuit breaker; Be provided with the second cover locking assembly between Qianmen, back door and breaker closing depression bar, the ground connection cutter pull bar; Be provided with the 3rd cover locking assembly between isolating switch rotating disk, ground connection cutter depression bar and the breaker closing button.
2, the five-defence block device of switch cubicle according to claim 1 is characterized in that: the first cover locking assembly comprises two horizontal struts, two trisquare shape connecting rods, two steel wire ropes, two opening button cover plates that can hide the breaker open operation button; Every opening button cover plate is installed in rotation on the cabinet, and every opening button cover plate also is provided with back-moving spring; Every trisquare shape connecting rod is rotatably mounted on the cabinet, and the rotation axis of trisquare shape connecting rod is positioned at its medium position; Above-mentioned every horizontal struts is fanned the wherein Yishanmen of door respectively near front and back two, every horizontal struts connects a wherein end of a trisquare shape connecting rod, the other end of every trisquare shape connecting rod connects a wherein end of a steel wire rope, and the other end of every steel wire rope connects wherein opening button cover plate.
3, the five-defence block device of switch cubicle according to claim 1 is characterized in that: the second cover locking assembly comprises trisquare shape connecting rod, horizontal push, vertical depression bar, fork, and Qianmen and back door correspondence respectively are provided with a bolt rod; Trisquare shape connecting rod is rotatably mounted in the cabinet, and the rotation axis of trisquare shape connecting rod is positioned at its medium position; Vertical depression bar is installed in rotation in the cabinet, and the roller pin of vertical depression bar can be installed in the vertical guide of cabinet up or down; Fork is hinged with the lower end of vertical depression bar, and vertical depression bar is positioned at breaker closing depression bar below, and an end of horizontal push is leaning the side, upper end of vertical depression bar; One end of the other end of horizontal push and trisquare shape connecting rod is hinged; The other end and the ground connection cutter pull bar of trisquare shape connecting rod are hinged; The second cover locking assembly also is provided with and can promotes second back-moving spring that two bolt rods insert Qianmen and back door respectively, and can promote the vertical depression bar back-moving spring that rotate vertical depression bar upper end; Be provided with transmission mechanism between fork and two bolt rods.
4, the five-defence block device of switch cubicle according to claim 1 is characterized in that: the 3rd cover locking assembly comprises a whole tying rod, U-shaped adjustable shelf, the first horizontal branch pull bar, the second horizontal branch pull bar, stay cord, switch knob cover plate, the trisquare shape connecting rod that can hide the breaker closing button; Trisquare shape connecting rod is rotatably mounted in the cabinet, and the rotation axis of trisquare shape connecting rod is positioned at its medium position; The switch knob cover plate is installed in rotation in the cabinet, and the switch knob cover plate is connected with back-moving spring; The switch knob cover plate connects stay cord, stay cord connects whole tying rod, whole tying rod is fixedlyed connected with the U-shaped adjustable shelf, two flanks of U-shaped adjustable shelf are respectively equipped with slotted hole, one end of the first horizontal branch pull bar, the second horizontal branch pull bar is equipped with bolt respectively, in the slotted hole of a wherein flank of every bolt insertion U-shaped adjustable shelf; The first horizontal branch pull bar is fixedly connected with a straight-bar; The other end of the second horizontal branch pull bar connects an end of trisquare shape connecting rod, and the other end and the ground connection cutter depression bar of trisquare shape connecting rod are hinged; The isolating switch rotating disk is connected with projection, and projection is formed with first side and second side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202040959U CN201307531Y (en) | 2008-11-21 | 2008-11-21 | Five-prevention blocking device of switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202040959U CN201307531Y (en) | 2008-11-21 | 2008-11-21 | Five-prevention blocking device of switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201307531Y true CN201307531Y (en) | 2009-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202040959U Expired - Fee Related CN201307531Y (en) | 2008-11-21 | 2008-11-21 | Five-prevention blocking device of switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201307531Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403141A (en) * | 2011-11-24 | 2012-04-04 | 山东泰开成套电器有限公司 | Switch cabinet back door and ground switch interlocking mechanism |
| CN102496515A (en) * | 2011-12-19 | 2012-06-13 | 太原惠特科技有限公司 | Front and rear multi-door locking mechanism with operating position of disconnecting switch on side face |
| CN102881484A (en) * | 2012-08-29 | 2013-01-16 | 温州新机电器有限公司 | Double-isolation operation interlocking mechanism for double-bus middle-placed switch cabinet |
| CN103198946A (en) * | 2013-04-02 | 2013-07-10 | 江西泰开成套电器有限公司 | Emergency opening and closing device for high-voltage cabinet middle door |
| CN105047468A (en) * | 2015-08-19 | 2015-11-11 | 张力 | Device for shielding operation hole of disconnecting switch of solid insulation ring main unit |
| CN112002577A (en) * | 2020-09-12 | 2020-11-27 | 广东正超电气有限公司 | Locking control structure of high-voltage switch cabinet |
-
2008
- 2008-11-21 CN CNU2008202040959U patent/CN201307531Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403141A (en) * | 2011-11-24 | 2012-04-04 | 山东泰开成套电器有限公司 | Switch cabinet back door and ground switch interlocking mechanism |
| CN102403141B (en) * | 2011-11-24 | 2013-09-25 | 山东泰开成套电器有限公司 | Switch cabinet back door and ground switch interlocking mechanism |
| CN102496515A (en) * | 2011-12-19 | 2012-06-13 | 太原惠特科技有限公司 | Front and rear multi-door locking mechanism with operating position of disconnecting switch on side face |
| CN102496515B (en) * | 2011-12-19 | 2013-10-02 | 太原惠特科技有限公司 | Front and rear multi-door locking mechanism with operating position of disconnecting switch on side face |
| CN102881484A (en) * | 2012-08-29 | 2013-01-16 | 温州新机电器有限公司 | Double-isolation operation interlocking mechanism for double-bus middle-placed switch cabinet |
| CN102881484B (en) * | 2012-08-29 | 2014-12-03 | 温州新机电器有限公司 | Double-isolation operation interlocking mechanism for double-bus middle-placed switch cabinet |
| CN103198946A (en) * | 2013-04-02 | 2013-07-10 | 江西泰开成套电器有限公司 | Emergency opening and closing device for high-voltage cabinet middle door |
| CN103198946B (en) * | 2013-04-02 | 2015-02-11 | 江西泰开成套电器有限公司 | Emergency opening and closing device for high-voltage cabinet middle door |
| CN105047468A (en) * | 2015-08-19 | 2015-11-11 | 张力 | Device for shielding operation hole of disconnecting switch of solid insulation ring main unit |
| CN112002577A (en) * | 2020-09-12 | 2020-11-27 | 广东正超电气有限公司 | Locking control structure of high-voltage switch cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20171121 |