CN103093984A - Switchgear earthing switch and cable room door interlocking mechanism - Google Patents
Switchgear earthing switch and cable room door interlocking mechanism Download PDFInfo
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- CN103093984A CN103093984A CN2013100171231A CN201310017123A CN103093984A CN 103093984 A CN103093984 A CN 103093984A CN 2013100171231 A CN2013100171231 A CN 2013100171231A CN 201310017123 A CN201310017123 A CN 201310017123A CN 103093984 A CN103093984 A CN 103093984A
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- chamber door
- cable chamber
- switch
- latch
- checkout gear
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Abstract
The invention discloses a switchgear earthing switch and cable room door interlocking mechanism. The switchgear earthing switch and cable room door interlocking mechanism comprises a reversing device, a clamping hook, a detection device, a transmission shaft, a cam, an operating seat and a plug pin, wherein the operating seat is provided with an axial through hole and a radial through hole; one end of the transmission shaft is in transmission connection with an earthing knife of an earthing switch through the reversing device, and the other end of the transmission shaft penetrates through a shaft hole of the cam and is mounted in the radial through hole of the operating seat; one end of the clamping hook is arranged on the operating seat in a sliding mode and is located below the cam, and the other end of the clamping hook is arranged to be a hook portion; one end of a reset spring is mounted on the detection device, and the other end of the reset spring is mounted on the clamping hook; and one end of the plug pin is arranged in the axial through hole of the operating seat, the other end of the plug pin is arranged in the detection device, and the detection device is in linkage with a cable room door. When the cable room door is opened, the detection device enables the plug pin to ascend, and the plug pin is exposed from the axial through hole of the operating seat; and when the cable room door is closed, the detection device enables the plug pin to descend, and the plug pin is hidden in the axial through hole of the operating seat. The switchgear earthing switch and cable room door interlocking mechanism is good in safety and high in reliability, and safety of operating personnel is effectively guaranteed.
Description
Technical field
This practical interlocking device that relates to a kind of switch cubicle refers in particular to the interlocking device of a kind of switch cabinet grounding switch and cable chamber door.
Background technology
During the normal power transmission of high-tension switch cabinet, the earthed switch that is arranged at wherein is in gate-dividing state, and when high-tension switch cabinet need to overhaul, for guaranteeing maintainer's personal safety, earthed switch must be in "on" position.In order to prevent that the maintainer from sending a telegram here suddenly when the interruption maintenance, and the residual charge on the electric equipment that disconnects of high-tension switch cabinet, guarantee maintainer's personal safety, when electric equipment is overhauled, all to close earthed switch with ground connection for each equipment that may power transmission arrives and the equipment that may produce induced voltage.
In prior art, when opening for the cable chamber door that guarantees high-tension switch cabinet, earthed switch combined floodgate ground connection normally arranges interlocking device and is connected with the earthing of earthed switch.During combined floodgate, by the operating grip transmission interlocking mechanism, the interlock earthing is in closing position, then, opens cable chamber door; During separating brake, close cable chamber door, then, by the operating grip transmission interlocking mechanism, the interlock earthing is in open position.Therefore, prior art can't be guaranteed: after one, earthed switch closes a floodgate, and cable chamber door before and after just opening; Two, after the front and back cable chamber door is closed simultaneously, could be with grounding switch tripping, its fail safe and poor reliability.
In view of the defects of prior art, the inventor develops a kind of overcome a kind of switch cabinet grounding switch of defects and the interlocking device of cable chamber door, and this case produces thus.
Summary of the invention
The object of the present invention is to provide a kind of fail safe is good and reliability is high switch cabinet grounding switch and the interlocking device of cable chamber door.
For reaching above-mentioned purpose, solution of the present invention is:
The interlocking device of a kind of switch cabinet grounding switch and cable chamber door is installed in the cabinet of switch cubicle, comprises reversing arrangement, grab, back-moving spring, checkout gear, power transmission shaft, cam, operation support and latch; Axially extending bore and radial direction through hole are set on operation support; Power transmission shaft one end is by the earthing of reversing arrangement transmission earthed switch, and the other end passes the axis hole of cam and is arranged in the radial direction through hole of operation support; Grab one end is slidably installed on operation support and is positioned at the below of cam, and the other end is set to hook portion; Back-moving spring one end is arranged on checkout gear, and the other end is arranged on grab; Latch one end is arranged in the axially extending bore of operation support, and the other end is arranged in checkout gear, checkout gear and cable chamber door interlock; When cable chamber door was opened, checkout gear rose latch, and latch is exposed to the axially extending bore of operation support, and when cable chamber door was closed, checkout gear descended latch, and latch is hidden in the axially extending bore of operation support.
Further, checkout gear comprises pedestal, connecting axle, action axle and pin; The action axle is arranged in pedestal in the mode that moves up and down, and its upper end is fixedly connected with latch, and the lower end arranges back-moving spring, on the action axle, axial profile groove is set, and pin is arranged in axial profile groove; Connecting axle is arranged in pedestal in the mode that moves left and right, the interlock of one end and cable chamber door, and the other end is set to the inclined-plane, and the inclined-plane is down and relative with pin; Between connecting axle and pedestal, back-moving spring is set.
Further, checkout gear also comprises connecting rod, and connecting rod is arranged in pedestal in the mode that moves left and right, and is positioned under connecting axle, one end and the interlock of rear cable chamber door, and other end pivot joint compressing tablet arranges back-moving spring between connecting rod and pedestal.
Further, reversing arrangement comprises large bevel gear and cone pinion, the earthing of large bevel gear transmission earthed switch, and cone pinion meshes and is fixedly connected with power transmission shaft with large bevel gear.
Further, reversing arrangement also comprises the umbellate form deflecting roller; The locking of umbellate form deflecting roller by universal driving shaft and rear cable chamber door links and connects, and meshes with large bevel gear.
Further, compressing tablet is provided with the inclined-plane, and the inclined-plane of compressing tablet is relative with the inclined-plane of connecting axle.
After adopting such scheme, when cable chamber door was closed, the hook portion of grab was hooked cable chamber door under the effect of back-moving spring, made cable chamber door to open, and guaranteed fail safe.
Need to open cable chamber door, when switch cubicle is overhauled, utilize operating grip to make power transmission shaft (switch-oriented cabinet axially extending bore is positive) rotation 180 degree clockwise, the earthing of rotation axis transmission earthed switch turns to horizontal direction by vertical direction, and earthed switch is closed a floodgate; Rotation axis makes cam clockwise rotate 180 degree simultaneously, forces grab to move down, and makes the hook portion disengaging of grab to the engaging of cable chamber door, can open cable chamber door, guarantees could open cable chamber door under the state of earthed switch combined floodgate, improves security reliability; At this moment, checkout gear rises latch, and latch is exposed to the axially extending bore of operation support, can't the update rotatable handle thereby make, guarantee that under the cable chamber door opening, earthed switch is in combined floodgate always, and guarantee safety.
After maintenance is completed, in the time of need to closing cable chamber door, checkout gear descends latch, latch is hidden in the axially extending bore of operation support, and then operating grip can insert and make power transmission shaft to rotate counterclockwise 180 degree, the earthing of transmission earthed switch turns to vertical direction by horizontal direction, makes grounding switch tripping; Rotation axis makes cam rotate counterclockwise 180 degree simultaneously, makes grab be in free state, and grab is under action of reset spring, and its hook portion engaging cable chamber door after guaranteeing that cable chamber door is closed, just can make grounding switch tripping, further guarantees security reliability.
Description of drawings
Fig. 1 is the constitutional diagram of the embodiment of the present invention one;
Fig. 2 is the embodiment of the present invention one cable chamber door opening figure;
Fig. 3 is the embodiment of the present invention one cable chamber door closed condition figure;
Fig. 4 is the constitutional diagram of the embodiment of the present invention two;
Fig. 5 is the embodiment of the present invention two grounding switch tripping state diagrams;
Fig. 6 is the embodiment of the present invention two earthed switch "on" position figure;
Fig. 7 is another state diagrams of the embodiment of the present invention two grounding switch trippings;
Fig. 8 is the forward and backward cable chamber door opening of the embodiment of the present invention two figure;
Fig. 9 is the rear cable chamber door closed condition of the embodiment of the present invention two figure;
Figure 10 is the front cable chamber door closed condition of the embodiment of the present invention two figure;
Figure 11 is the forward and backward cable chamber door of the embodiment of the present invention two closed condition figure simultaneously.
Label declaration
Operation support 1
Axially extending bore 11 radial direction through hole 12
Umbellate form deflecting roller 33 universal driving shafts 34
Grab 5 hook portions 51
Back-moving spring 6 checkout gears 7
The axial profile groove 711 of action axle 71
Spacing ring 712 pedestals 72
Installing hole (721,722) back-moving spring (73,76,78)
Pin 74 connecting axles 75
Inclined-plane 751 connecting rods 77
Compressing tablet 771 inclined-planes 7711
Latch 8 earthed switches 9
Earthing 91.
Embodiment
The present invention is described in detail below in conjunction with drawings and the specific embodiments.
Consult Fig. 1 to shown in Figure 3, the present invention discloses first embodiment of interlocking device of a kind of switch cabinet grounding switch and cable chamber door, be installed in the cabinet of switch cubicle, it comprises operation support 1, power transmission shaft 2, reversing arrangement 3, cam 4, grab 5, back-moving spring 6, checkout gear 7 and latch 8.
Axially extending bore 11 and radial direction through hole 12 are set on operation support 1, and axially extending bore 11 connects with radial direction through hole 12.
Grab 5 one ends are slidably installed on operation support 1 and are positioned at the below of cam 4, can chute be set at grab 5 one ends, accordingly, on operation support 1, slide block are set, and slide block is placed in chute, also can be for other sliding type arrange, and the other end is set to hook portion 51.
Back-moving spring 6 one ends are arranged on checkout gear 7, and the other end is arranged on grab 5.
In embodiment one, checkout gear 7 comprises action axle 71, pedestal 72, back-moving spring (73,76), pin 74 and connecting axle 75.
Action axle 71 is arranged in pedestal 72 in the mode that moves up and down, be specially: in the upper end of pedestal 72, installing hole 721 is set, the lower end also arranges installing hole 722, action axle 71 is placed in installing hole 71 and 72, action axle 71 lower end socket back-moving springs 73, and the upper end arranges limits the spacing ring 712 that it breaks away from installing hole 721, the upper end of action axle 71 is fixedly connected with latch 8, the lower end arranges back-moving spring 73, on action axle 71, axial profile groove 711 is set, and pin 74 is arranged in axial profile groove 711.
Connecting axle 75 is arranged in pedestal 72 in the mode that moves left and right, the interlock of one end and cable chamber door, and the other end is set to inclined-plane 751, and inclined-plane 751 and relative with pin 74 also arranges back-moving spring 76 between connecting axle 75 and pedestal 72 down.
In embodiment one, reversing arrangement 3 comprises large bevel gear 31 and cone pinion 32, the earthing 91 of large bevel gear 31 transmission earthed switches 9, and cone pinion 32 meshes and is fixedly connected with power transmission shaft 2 with large bevel gear 31.
Embodiment one is applicable to the switch cubicle of single fan cable chamber door, and during use, when cable chamber door is in closed condition, the hook portion 51 of grab 5 is blocked cable chamber door under the effect of back-moving spring 6, makes cable chamber door can't open to guarantee fail safe.
In the time of need to overhauling the unlatching cable chamber door to switch cubicle, utilize the operating grip (not shown) to make power transmission shaft 2 clockwise rotate 180 degree, the earthing 91 of transmission earthed switch 9 turns to horizontal direction by vertical direction, and earthed switch 9 is closed a floodgate; Make simultaneously cam 4 clockwise rotate 180 degree, force grab 5 to move down, make hook portion 51 disengagings of grab 5 to the engaging of cable chamber door, can open cable chamber door, guarantee to open cable chamber door under the state of earthed switch 9 combined floodgates, improve security reliability; When cable chamber door is opened, connecting axle 75 moves under back-moving spring 76 effects, and action axle 71 loses the inclined-plane 751 of connecting axle 75 to its constraint, and action axle 71 moves under the effect of back-moving spring 73, move on transmission latch 8, make latch 8 be exposed to axially extending bore 11, at this moment, operating grip can't insert, as shown in Figure 2, guarantee that under the cable chamber door opening, earthed switch 9 is in combined floodgate always, guarantee safety.
As shown in Figure 3, maintenance is completed when closing cable chamber door, the cable chamber door axle 75 that is in transmission connection moves, pin 74 is pushed on the inclined-plane 751 of connecting axle 75, and pin 74 drives action axle 71 and moves down, and makes latch 8 move down and be hidden in the axially extending bore 11 of operation support 1, at this moment, operating grip can insert and make power transmission shaft 2 to rotate counterclockwise 180 degree, and the earthing 91 of transmission earthed switch 9 turns to vertical direction by horizontal direction, makes earthed switch 9 separating brakes; Rotation axis 2 makes cam rotate counterclockwise 180 degree simultaneously, and grab 5 is under back-moving spring 6 effects, and its hook portion 51 engaging cable chamber doors after guaranteeing that cable chamber door is closed, just can make grounding switch tripping, further guarantee security reliability.
Consult Fig. 4 to shown in Figure 11, a kind of switch cabinet grounding switch that the present invention discloses and second embodiment of interlocking device of cable chamber door.
Embodiment two is different from embodiment one to be: checkout gear 7 is except comprising action axle 71, pedestal 72, back-moving spring (73,76), pin 74 and connecting axle 75, also comprise connecting rod 77, connecting rod 77 is arranged in pedestal in the mode that moves left and right, and be positioned under connecting axle 75, its set-up mode is the same with connecting axle 75 set-up modes, one end and the interlock of rear cable chamber door, other end pivot joint compressing tablet 771 arranges back-moving spring 78 between connecting rod 77 and pedestal 72; For convenience of inclined-plane 751 extruding of compressing tablet 771 with connecting axle 75, compressing tablet 771 also is provided with inclined-plane 7711, and the inclined-plane 7711 of compressing tablet 771 is relative with the inclined-plane 751 of connecting axle 75.
In embodiment one, pin 74 is arranged on the middle-end of axial profile groove 711, different from embodiment one, in embodiment two, pin 74 is arranged on the lower end of axial profile groove 711, better, the inclined-plane 751 that makes connecting rod 77 get compressing tablet 771 and connecting axle 75 pushes, and then action axle 71 is moved down.
Executing example two also is with embodiment one difference: reversing arrangement 3 also comprises umbellate form deflecting roller 33; Umbellate form deflecting roller 33 is connected with the locking button 35 of rear cable chamber door by universal driving shaft 34, and meshes with large bevel gear 31.
The switch cubicle of biparting cable chamber door before and after embodiment two is applicable to, as shown in Figure 5, cable chamber door is in closed condition when front and back, and the hook portion 51 of grab 5 is under the effect of back-moving spring 6, front cable chamber door is blocked, make front cable chamber door can't open to guarantee fail safe; Rear cable chamber door is sealed under 35 effects of locking button, can't open to guarantee fail safe.
In the time of need to overhauling the unlatching cable chamber door to switch cubicle, as shown in Figure 6, utilize the operating grip (not shown) to make power transmission shaft 2 clockwise rotate 180 degree, the earthing 91 of transmission earthed switch 9 turns to horizontal direction by vertical direction, and earthed switch 9 is closed a floodgate; Make simultaneously cam 4 clockwise rotate 180 degree, force grab 5 to move down, make hook portion 51 disengagings of grab 5 to the engaging of front cable chamber door, can open front cable chamber door; Power transmission shaft 2 passes through reversing arrangement 3 transmission universal driving shafts 34, and makes locking button 35 clockwise rotate 180 degree, and releasing is sealed to rear cable chamber door, can open rear cable chamber door; Therefore, guaranteeing to open forward and backward cable chamber door under the state that earthed switch 9 closes a floodgate, improve security reliability.
When forward and backward cable chamber door is opened, as shown in Figure 8, connecting axle 75 moves right under back-moving spring 76 effects, connecting rod 77 is moved to the left under back-moving spring 78 effects, at this moment, the inclined-plane 751 of connecting axle 75 and the compressing tablet of connecting rod 77 lose the constraint to action axle 71, action axle 71 moves under the effect of back-moving spring 73, move on transmission latch 8, make latch 8 be exposed to axially extending bore 11, at this moment, operating grip can't insert, guarantee that under the cable chamber door opening, earthed switch 9 is in combined floodgate always, guarantee safety.
After maintenance was completed, when closing rear cable chamber door, as shown in Figure 9, rear cable chamber door driving connecting rod 77 moved, the axial profile groove 711 of the compressing tablet 771 insert action axles 71 of connecting rod 77
In, being arranged on the lower end of axial profile groove 711 due to pin 74, compressing tablet 771 forms extruding to pin 74, and action axle 71 does not move.
When closing front cable chamber door, as shown in figure 10, the front cable chamber door axle 75 that is in transmission connection moves right, in the axial profile groove 711 of the inclined-plane 751 insert action axles 71 of connecting axle 75, be arranged on the lower end of axial profile groove 711 due to pin 74, the inclined-plane 751 of connecting axle 75 does not form extruding to pin 74, and action axle 71 does not move.
When forward and backward cable chamber door is closed simultaneously, as shown in figure 11, in the axial profile groove 711 of the compressing tablet 771 of connecting rod 77 and the inclined-plane of connecting axle 75 751 axles of insert action simultaneously 71, extruding pin 74 under compressing tablet 771 and inclined-plane 751 actings in conjunction, the axle 71 that will move presses down, driving latch 8 moves down and is hidden in the axially extending bore 11 of operation support 1, at this moment, operating grip can insert and make power transmission shaft 2 to rotate counterclockwise 180 degree, the earthing 91 of transmission earthed switch 9 turns to vertical direction by horizontal direction, makes earthed switch 9 separating brakes; Rotation axis 2 makes cam rotate counterclockwise 180 degree simultaneously, and grab 5 is under back-moving spring 6 effect, and cable chamber doors before its hook portion 51 engagings guarantee that front cable chamber door closes; Power transmission shaft 2 also passes through reversing arrangement 3 transmission universal driving shafts 34, and makes locking button 35 rotate counterclockwise 180 degree, sealed rear cable chamber door.Therefore, when only having forward and backward cable chamber door to close simultaneously, could use lever rotating drive shaft 2, make earthed switch 9 separating brakes, further guarantee processing safety.
The nouns of locality such as the above relevant front, back, left, right, up, down, just convenient the description, be not to limit the present invention.
The above is only preferred embodiment of the present invention, is not the restriction to this case design, and all equivalent variations of doing according to the design key of this case all fall into the protection range of this case.
Claims (6)
1. the interlocking device of a switch cabinet grounding switch and cable chamber door, be installed in the cabinet of switch cubicle, it is characterized in that: comprise reversing arrangement, grab, back-moving spring, checkout gear, power transmission shaft, cam, operation support and latch; Axially extending bore and radial direction through hole are set on operation support; Power transmission shaft one end is by the earthing of reversing arrangement transmission earthed switch, and the other end passes the axis hole of cam and is arranged in the radial direction through hole of operation support; Grab one end is slidably installed on operation support and is positioned at the below of cam, and the other end is set to hook portion; Back-moving spring one end is arranged on checkout gear, and the other end is arranged on grab; Latch one end is arranged in the axially extending bore of operation support, and the other end is arranged in checkout gear, checkout gear and cable chamber door interlock; When cable chamber door was opened, checkout gear rose latch, and latch is exposed to the axially extending bore of operation support, and when cable chamber door was closed, checkout gear descended latch, and latch is hidden in the axially extending bore of operation support.
2. the interlocking device of a kind of switch cabinet grounding switch as claimed in claim 1 and cable chamber door, it is characterized in that: checkout gear comprises pedestal, connecting axle, action axle and pin; The action axle is arranged in pedestal in the mode that moves up and down, and its upper end is fixedly connected with latch, and the lower end arranges back-moving spring, on the action axle, axial profile groove is set, and pin is arranged in axial profile groove; Connecting axle is arranged in pedestal in the mode that moves left and right, the interlock of one end and cable chamber door, and the other end is set to the inclined-plane, and the inclined-plane is down and relative with pin; Between connecting axle and pedestal, back-moving spring is set.
3. the interlocking device of a kind of switch cabinet grounding switch as claimed in claim 2 and cable chamber door, it is characterized in that: checkout gear also comprises connecting rod, connecting rod is arranged in pedestal in the mode that moves left and right, and be positioned under connecting axle, one end and the interlock of rear cable chamber door, other end pivot joint compressing tablet arranges back-moving spring between connecting rod and pedestal.
4. the interlocking device of a kind of switch cabinet grounding switch as claimed in claim 1 and cable chamber door, it is characterized in that: reversing arrangement comprises large bevel gear and cone pinion, the earthing of large bevel gear transmission earthed switch, cone pinion meshes and is fixedly connected with power transmission shaft with large bevel gear.
5. the interlocking device of a kind of switch cabinet grounding switch as claimed in claim 4 and cable chamber door, it is characterized in that: reversing arrangement also comprises the umbellate form deflecting roller; The locking of umbellate form deflecting roller by universal driving shaft and rear cable chamber door links and connects, and meshes with large bevel gear.
6. the interlocking device of a kind of switch cabinet grounding switch as claimed in claim 3 and cable chamber door, it is characterized in that: compressing tablet is provided with the inclined-plane, and the inclined-plane of compressing tablet is relative with the inclined-plane of connecting axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310017123.1A CN103093984B (en) | 2013-01-17 | 2013-01-17 | Switchgear earthing switch and cable room door interlocking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310017123.1A CN103093984B (en) | 2013-01-17 | 2013-01-17 | Switchgear earthing switch and cable room door interlocking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103093984A true CN103093984A (en) | 2013-05-08 |
| CN103093984B CN103093984B (en) | 2017-02-08 |
Family
ID=48206442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310017123.1A Expired - Fee Related CN103093984B (en) | 2013-01-17 | 2013-01-17 | Switchgear earthing switch and cable room door interlocking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103093984B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105097325A (en) * | 2015-07-16 | 2015-11-25 | 许继（厦门）智能电力设备股份有限公司 | Anti-misoperation mechanism of interlocking mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4806710A (en) * | 1987-09-10 | 1989-02-21 | S&C Electric Company | Mechanical door interlock for electrical equipment enclosure |
| EP0532838A2 (en) * | 1991-09-20 | 1993-03-24 | Felten & Guilleaume Energietechnik AG | Lock mechanism for operation openings in a switchgear installation |
| CN202004361U (en) * | 2011-03-14 | 2011-10-05 | Abb技术有限公司 | Interlocking device between grounding switch and rear door on air-insulated switchgear |
| CN202121241U (en) * | 2011-07-11 | 2012-01-18 | 厦门明翰电气股份有限公司 | Anti-misoperation locking device for electric grounding knifeswitch of medium voltage switchgear |
| CN203179729U (en) * | 2013-01-17 | 2013-09-04 | 国家电网公司 | Interlocking mechanism of grounding switch and cable chamber door of switch cabinet |
-
2013
- 2013-01-17 CN CN201310017123.1A patent/CN103093984B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4806710A (en) * | 1987-09-10 | 1989-02-21 | S&C Electric Company | Mechanical door interlock for electrical equipment enclosure |
| EP0532838A2 (en) * | 1991-09-20 | 1993-03-24 | Felten & Guilleaume Energietechnik AG | Lock mechanism for operation openings in a switchgear installation |
| CN202004361U (en) * | 2011-03-14 | 2011-10-05 | Abb技术有限公司 | Interlocking device between grounding switch and rear door on air-insulated switchgear |
| CN202121241U (en) * | 2011-07-11 | 2012-01-18 | 厦门明翰电气股份有限公司 | Anti-misoperation locking device for electric grounding knifeswitch of medium voltage switchgear |
| CN203179729U (en) * | 2013-01-17 | 2013-09-04 | 国家电网公司 | Interlocking mechanism of grounding switch and cable chamber door of switch cabinet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105097325A (en) * | 2015-07-16 | 2015-11-25 | 许继（厦门）智能电力设备股份有限公司 | Anti-misoperation mechanism of interlocking mechanism |
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| Publication number | Publication date |
|---|---|
| CN103093984B (en) | 2017-02-08 |
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Granted publication date: 20170208 Termination date: 20190117 |