CN112750636B - Power switch cabinet convenient for locking load switch and isolating switch - Google Patents
Power switch cabinet convenient for locking load switch and isolating switch Download PDFInfo
- Publication number
- CN112750636B CN112750636B CN202011578234.6A CN202011578234A CN112750636B CN 112750636 B CN112750636 B CN 112750636B CN 202011578234 A CN202011578234 A CN 202011578234A CN 112750636 B CN112750636 B CN 112750636B
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- switch
- lock
- load switch
- locking
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/46—Interlocking mechanisms
- H01H33/52—Interlocking mechanisms for interlocking two or more switches
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to an electric power switch cabinet convenient for locking a load switch and an isolating switch, which comprises a cabinet body, a first program lock and a second program lock, wherein the cabinet body is internally provided with the load switch and the isolating switch, the load switch comprises a load switch closing loop, a load switch operating shaft and a load switch closing half shaft linkage pull rod, the isolating switch comprises the isolating switch operating shaft, and the first program lock and the second program lock are both arranged in the cabinet body, so that the electric power switch cabinet has the advantages that: the first program lock controls the on-off of the load switch, and the second program lock controls the on-off of the isolating switch, so that the load switch and the isolating switch can be controlled and operated independently, the load switch is closed after the isolating switch is closed during power transmission operation, and the isolating switch is opened after the load switch is opened during power failure operation.
Description
Technical Field
The invention relates to a power switch cabinet convenient for locking a load switch and an isolating switch.
Background
The power switch cabinet is composed of a high-voltage switch cabinet, a high-voltage distribution cabinet, a distribution box, a low-voltage switch cabinet and a low-voltage distribution box, is one of electrical equipment and is relatively large-scale electrical equipment, and the existing power switch cabinet must follow a five-prevention operation program in the operation of point sending and power failure: 1. when in power transmission operation, the isolating switch is firstly switched on, and then the load switch is switched on; 2. when the power failure operation is carried out, the load switch is firstly divided, and then the isolating switch is divided. In a common high-voltage switch cabinet, a load switch and a related isolating switch are designed on the same cabinet, mechanical five-prevention is simpler, but in many cases, the load switch and the related isolating switch are not arranged in the same cabinet and are still far away from each other sometimes, and a mechanical locking mechanism is designed on the load switch and the related isolating switch more complicated, so that the mechanical locking mechanism has the problems of high cost, low efficiency and time consumption.
Disclosure of Invention
The invention aims to provide the power switch cabinet convenient for locking the load switch and the isolating switch, which can quickly realize the locking of the load switch and the isolating switch and improve the operation efficiency of operators.
In order to solve the technical problems, the invention is realized by the following technical scheme: a power switch cabinet convenient for locking a load switch and an isolating switch comprises a cabinet body, wherein the cabinet body is internally provided with the load switch and the isolating switch, the load switch comprises a load switch closing loop, a load switch operating shaft and a load switch closing half shaft linkage pull rod, the isolating switch comprises the isolating switch operating shaft, a first program lock for controlling the closing and opening of the load switch and a second program lock for controlling the closing and opening of the isolating switch, the first program lock and the second program lock are both arranged in the cabinet body, the cabinet body is movably connected with a linkage lock plate connected with the load switch closing half shaft linkage pull rod, the first program lock is connected with a cover plate, the load switch closing loop is connected with a travel switch in series, when the first program lock passes through the linkage lock plate, the first program lock drives the cover plate to move to block the load switch operating shaft, and the travel switch is in a normally open state; the cabinet body is also movably connected with a locking plate matched with the second program lock, and the locking plate is provided with an operation hole corresponding to the isolating switch operation shaft.
Preferably, the first program lock comprises a first lock rod, one end of the first lock rod is connected with the cover plate, the linkage lock plate is provided with a first through hole matched with the other end of the first lock rod, and the first program lock is provided with a first key for driving the first lock rod to move in the first lock body;
the second program lock comprises a second lock rod, a second through hole matched with the second lock rod is formed in the locking plate, and a second key for driving the second lock rod to move in the second lock rod is arranged on the second program lock.
Preferably, the linkage locking plate comprises a horizontal part and a vertical part, the horizontal part is arranged at the top end of the vertical part, the load switch closing half shaft linkage pull rod is connected with the horizontal part, the vertical part is movably connected to the cabinet body, and the horizontal part and the vertical part are of an integrated structure.
Preferably, the cabinet body is provided with a first bolt assembly connected with the vertical portion, and the vertical portion is provided with a first strip-shaped hole matched with the first bolt assembly.
Preferably, the cabinet body is provided with a second bolt assembly connected with the locking plate, and the locking plate is provided with a second strip-shaped hole matched with the second bolt assembly.
Preferably, the cover plate is provided with a shielding part for shielding the operating shaft of the load switch, and the shielding part and the cover plate are of an integrated structure.
Preferably, one end of the cover plate is provided with a first connecting plate connected with the first lock rod, the other end of the cover plate is provided with a second connecting plate abutted against the travel switch, and the first connecting plate and the second connecting plate are integrally formed with the cover plate.
Preferably, the travel switch comprises a thimble, and the travel switch is in a normally closed state when the thimble is compressed by the cover plate, and is in a normally open state when the thimble is released.
Preferably, a fixed plate for installing a travel switch is further arranged in the cabinet body.
Preferably, the cabinet body is internally provided with a mounting plate for respectively mounting the first program lock and the second program lock.
In conclusion, the invention has the advantages that: the first program lock and the second program lock have simple structures, are convenient to operate, reduce the time during operation and improve the operating efficiency, and secondly, a cover plate for blocking the operating shaft of the load switch is arranged on the first program lock, the closing and the opening of the load switch are controlled by the position relation of the cover plate and the operating shaft of the load switch, a travel switch is connected in series on the closing circuit of the load switch, and when the first program lock drives the cover plate to move to block the operating shaft of the load switch, the load switch can not be manually switched on at the moment, and meanwhile, the load switch can not be electrically switched on at the moment because the travel switch is in a normally open state, so that the switching-off of the load switch during power failure operation is ensured, the control effect is good, the locking plate movably connected on the cabinet body is matched with the second program lock in a lock mode, the switching-on and switching-off of the isolating switch are controlled through the corresponding condition of the operation hole on the locking plate and the operation shaft of the isolating switch, the locking of the locking plate is realized through the second program lock, the switching-on and switching-off efficiency of the isolating switch is improved, and finally, the zinc coating layers are arranged on the locking plate, the linkage locking plate and the cover plate, so that the service lives of the locking plate, the linkage locking plate and the cover plate can be effectively prolonged, and the service life of the whole is prolonged.
Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the invention and the accompanying drawings.
Drawings
The invention is further illustrated with reference to the accompanying drawings:
FIG. 1 is a schematic structural diagram of the load switch of the present invention during opening;
FIG. 2 is a schematic structural diagram of the disconnecting switch of the present invention during opening;
FIG. 3 is a schematic structural diagram of the disconnecting switch of the present invention during closing;
fig. 4 is a schematic structural diagram of the load switch during closing.
Reference numerals:
the device comprises a cabinet body 1, a load switch 2, a load switch operating shaft 21, a load switch closing half shaft linkage pull rod 22, a disconnecting switch 3, a disconnecting switch operating shaft 31, a first program lock 4, a first lock rod 41, a first key 42, a second program lock 5, a second lock rod 51, a second key 52, a linkage lock plate 6, a horizontal part 60, a vertical part 61, a cover plate 7, a shielding part 71, a first connecting plate 72, a second connecting plate 73, a stroke switch 8, a thimble 81, a locking plate 9, an operating hole 91, a second strip-shaped hole 92, a first bolt assembly 10, a second bolt assembly 11, a fixing plate 12 and a mounting plate 13.
Detailed Description
As shown in fig. 1, 2, 3 and 4, an electric power switch cabinet convenient for locking a load switch and an isolation switch comprises a cabinet body 1, wherein the cabinet body 1 is internally provided with the load switch 2 and the isolation switch 3, the load switch 2 comprises a load switch closing loop, a load switch operating shaft 21 and a load switch closing half-shaft linkage pull rod 22, the load switch closing loop is the prior art, a detailed description is omitted in this embodiment, the isolation switch 3 comprises an isolation switch operating shaft 31, a first program lock 4 for controlling the closing and opening of the load switch 2 and a second program lock 5 for controlling the closing and opening of the isolation switch 3, the first program lock 4 and the second program lock 5 are both installed in the cabinet body 1, the cabinet body 1 is movably connected with a linkage locking plate 6 connected with the load switch closing half-shaft linkage pull rod 22, the first program lock 4 is connected with a cover plate 7, a travel switch 8 is connected in series on a closing loop of the load switch 2, when the first program lock 4 passes through the linkage locking plate 6, the first program lock 4 drives the cover plate 7 to move so as to block the load switch operating shaft 21, and the travel switch 8 is in a normally open state; the cabinet body 1 is further movably connected with a locking plate 9 matched with the second program lock 5, and the locking plate 9 is provided with an operation hole 91 corresponding to the isolating switch operation shaft 31.
The first program lock 4 controls the on/off of the load switch 2, the second program lock 5 controls the on/off of the isolating switch 3, so that the load switch 2 and the isolating switch 3 can be controlled and operated independently during operation, the condition that the isolating switch 3 is firstly switched on and then the load switch 2 is switched on during power transmission operation and the condition that the load switch 2 is firstly switched off and then the isolating switch 3 is switched off during power failure operation are ensured, so that the whole power switch cabinet has the requirement of five-prevention operation procedures is met, the first program lock 4 and the second program lock 5 have simple structures and convenient operation, the time during operation is reduced, the operation efficiency is improved, secondly, a cover plate 7 for blocking a load switch operating shaft 21 is arranged on the first program lock 4, the on/off of the load switch 2 is controlled through the position relation between the cover plate 7 and the load switch operating shaft 21, and a travel switch 8 is arranged on a switching-on loop of the load switch 2 in series connection, when the first program lock 4 drives the cover plate 7 to move to block the load switch operating shaft 21, the load switch 2 cannot be manually switched on, and meanwhile, the load switch 2 cannot be electrically switched on when the travel switch 8 is in a normally open state, so that the switching-off of the load switch 2 during power failure operation is ensured, the control effect is good, the locking plate 9 movably connected on the cabinet body 1 is matched with the second program lock 5, the switching-on and switching-off of the isolating switch 3 are controlled through the corresponding situation of the operating hole 91 on the locking plate 9 and the isolating switch operating shaft 31, the locking of the locking plate 9 is realized through the second program lock 5, the switching-on and switching-off efficiencies of the isolating switch are improved, and finally, the service lives of the locking plate, the linkage locking plate and the cover plate can be effectively prolonged and the service life of the whole is prolonged by arranging zinc plating layers on the locking plate, the linkage locking plate and the cover plate.
The first program lock 4 comprises a first lock rod 41, one end of the first lock rod 41 is connected with the cover plate 7, the linkage lock plate 6 is provided with a first through hole matched with the other end of the first lock rod 41, and the first program lock 4 is provided with a first key 42 for driving the first lock rod 41 to move in the first program lock 4; second procedure lock 5 includes second locking lever 51, be equipped with on the locking plate 9 with second locking lever 51 matched with second through-hole, be equipped with the second key 52 of drive second locking lever 51 motion in second procedure lock 5 on the second procedure lock 5, realize the motion of second locking lever 51 in second procedure lock 5 through second key 52, it is effectual to drive, makes things convenient for operating personnel to operate, and first key 42 and second key 52 enable first procedure lock 4 and second procedure lock 5 mutual independence when the operation, have improved the security performance when the operation.
During power failure operation, the load switch 2 is switched off, the first key 42 is inserted into the first program lock 4 and rotates anticlockwise to drive the first lock rod 41 to move rightwards and penetrate into the first through hole, meanwhile, the first lock rod 41 drives the cover plate 7 to move rightwards to block the load switch operating shaft 21, at the moment, the load switch 2 cannot be switched on manually, the second key 52 is inserted into the second program lock 5 and rotates clockwise to drive the second lock rod 52, the second key 52 drives the second lock rod 51 to move leftwards and exit from the second through hole, at the moment, the locking plate 9 does not move downwards under the limitation of the second lock rod 51, the isolating switch operating shaft 31 is aligned with the operating hole 91, at the moment, the second key 52 cannot be pulled down, and the isolating switch 3 operating rod is inserted into the operating hole 91 and then is separated from the switch 3;
during power transmission operation, the operating rod of the isolating switch 3 is inserted into the operating hole 91 and then the isolating switch 3 is closed, the locking plate 9 moves upwards to enable the operating hole 91 to be staggered with the hole of the isolating switch operating shaft 31, at the moment, the isolating switch 3 cannot be operated, the second key 52 is inserted into the second program lock 5, the second lock rod 51 moves rightwards by rotating the second key 52 anticlockwise to penetrate into the second through hole in the locking plate 9, the locking plate 9 is locked and closed, and at the moment, the second key 52 can be pulled out; the first key 42 is inserted into the first program lock 4 and the first key 42 is rotated clockwise, the first key 42 drives the first lock rod 41 to move leftward and exit from the first through hole, meanwhile, the first lock rod 41 drives the cover plate 7 to move leftward so that the cover plate is not blocked by the load switch operating shaft 21, the load switch 2 can be manually switched on, the load switch 2 is switched on, the load switch switching-on half shaft linkage pull rod 22 moves upward to drive the linkage lock plate 6 to rise so that the first through hole and the first lock rod 41 are staggered, and the first key 42 cannot be pulled out.
The linkage locking plate 6 comprises a horizontal part 60 and a vertical part 61, the horizontal part 60 is arranged at the top end of the vertical part 61, the load switch closing half-shaft linkage pull rod 22 is connected with the horizontal part 60, the vertical part 61 is movably connected on the cabinet body 1, the horizontal part 60 and the vertical part 61 are of an integrated structure, the linkage locking plate 6 is arranged into the horizontal part 60 and the vertical part 61, the contact area with the load switch closing half-shaft linkage pull rod 22 can be increased, the fixing quality of the load switch closing half-shaft linkage pull rod 22 is improved, the swinging of the load switch closing half-shaft linkage pull rod 22 relative to the cabinet body 1 when the linkage locking plate 6 moves is reduced, the horizontal part 60 and the vertical part 61 are arranged into an integrated structure, the installation strength of the whole linkage locking plate 6 can be improved, the processing of the linkage locking plate 6 is convenient, the first bolt assembly 10 connected with the vertical part 61 is arranged on the cabinet body 1, the vertical part 61 is provided with a first strip-shaped hole matched with the first bolt component 10, the first strip-shaped hole moves in the first bolt component 10 to ensure the straightness of the vertical part 61 during movement, reduce the shaking of the vertical part 61 relative to the cabinet body 1 during movement, ensure that the first lock rod 41 can be inserted into the first through hole, the cabinet body 1 is provided with a second bolt component 11 connected with the locking plate 9, the locking plate 9 is provided with a second strip-shaped hole 92 matched with the second bolt component 11, the second bolt component 11 and the second strip-shaped hole 92 can ensure the straightness of the movement of the locking plate 9, reduce the shaking of the locking plate 9 relative to the cabinet body 1 during movement, ensure that the second lock rod 51 can be inserted into the second through hole, the cover plate 7 is provided with a shielding part 71 for shielding the load switch operating shaft 21, the shielding part 71 and the cover plate 7 are of an integrated structure, and the cover plate 7 is provided with a shielding part 71 for shielding the load switch operating shaft 21, the load switch operating shaft 21 can be ensured not to be affected by the cover plate 7 during operation, and secondly, the shielding part 71 and the cover plate 7 are arranged into an integral structure, so that the installation process between the shielding part 71 and the cover plate 7 is simplified, and the connection strength between the shielding part 71 and the cover plate 7 is improved.
One end of the cover plate 7 is provided with a first connecting plate 72 connected with the first lock rod 41, the other end of the cover plate 7 is provided with a second connecting plate 73 abutted with the travel switch 8, the first connecting plate 72 and the second connecting plate 73 are integrally formed with the cover plate 7, the contact area between the cover plate 7 and the first lock rod 41 can be increased through the first connecting plate 72, the stability of the cover plate 7 during movement is improved, the balance of the cover plate 7 during fixing is ensured, the contact area between the second connecting plate 73 and the travel switch 8 can be increased, the opening and closing of the travel switch 8 are ensured, the travel switch 8 comprises a thimble 81, the travel switch 8 is in a normally closed state when the thimble 81 is compressed by the cover plate 7, the travel switch 8 is in a normally open state when the thimble 81 is released, when the cover plate 7 does not shield the load switch operating shaft 21 during use, the cover plate 7 abuts against the thimble 81 to enable the thimble 81 to be in a compressed state, because the load switch operating shaft 21 is not shielded by the cover plate 7, the load switch 2 can be manually switched on through the load switch operating shaft 21 at the moment, meanwhile, the travel switch 8 is in a normally closed state, the load switch 2 can be electrically switched on through the travel switch 8 at the moment, secondly, when the cover plate 7 moves towards the load switch operating shaft 21 under the action of the first program lock 4, the ejector pin 81 is not extruded by the cover plate 7 and is released at the moment, because the moved cover plate 7 realizes shielding of the load switch operating shaft 21, the load switch 2 cannot be manually switched on through the load switch operating shaft 21 at the moment, meanwhile, the travel switch 8 is in a normally open state, and the load switch 2 cannot be electrically switched on through the travel switch 8.
Still be equipped with the fixed plate 12 of installation travel switch 8 in the cabinet body 1, enable the steady installation of travel switch 8 in the cabinet body 1, reduce travel switch 8's not hard up, be equipped with the mounting panel 13 of installing first procedure lock 4 and second procedure lock 5 respectively in the cabinet body 1, can realize that first procedure lock 4 and second procedure lock 5 are mutually independent installs in the cabinet body 1, prevent that first procedure lock 4 and second procedure lock 5 from influencing each other, improved shutting efficiency.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (10)
1. The utility model provides a power switch cabinet convenient to load switch, isolator shutting, includes the cabinet body, internal load switch and the isolator of being equipped with of cabinet, load switch includes load switch combined floodgate return circuit, load switch operating axis and load switch combined floodgate semi-axis linkage pull rod, isolator includes the isolator operating axis, its characterized in that: the switch cabinet is characterized by also comprising a first program lock for controlling the opening and closing of a load switch and a second program lock for controlling the opening and closing of an isolating switch, wherein the first program lock and the second program lock are both arranged in the cabinet body;
the cabinet body is also movably connected with a locking plate matched with the second program lock, and the locking plate is provided with an operation hole corresponding to the operation shaft of the isolating switch;
and the locking plate, the linkage locking plate and the cover plate are all provided with a zinc coating.
2. The power switch cabinet convenient for locking of a load switch and a disconnecting switch as claimed in claim 1, wherein: the first program lock comprises a first lock core rod, one end of the first lock core rod is connected with the cover plate, a first through hole matched with the other end of the first lock core rod is formed in the linkage lock plate, and a first key for driving the first lock core rod to move in the first lock body is arranged on the first program lock;
the second program lock comprises a second lock rod, a second through hole matched with the second lock rod is formed in the locking plate, and a second key for driving the second lock rod to move in the second lock rod is arranged on the second program lock.
3. The power switch cabinet convenient for locking of a load switch and a disconnecting switch as claimed in claim 2, wherein: the linkage locking plate comprises a horizontal part and a vertical part, the horizontal part is arranged at the top end of the vertical part, the load switch closing half shaft linkage pull rod is connected with the horizontal part, the vertical part is movably connected to the cabinet body, and the horizontal part and the vertical part are of an integrated structure.
4. The power switch cabinet convenient for locking of a load switch and a disconnecting switch as claimed in claim 3, wherein: the cabinet body is provided with a first bolt assembly connected with the vertical portion, and the vertical portion is provided with a first strip-shaped hole matched with the first bolt assembly.
5. The power switch cabinet convenient for locking of a load switch and a disconnecting switch as claimed in claim 1, wherein: the cabinet body is provided with a second bolt component connected with the locking plate, and the locking plate is provided with a second strip-shaped hole matched with the second bolt component.
6. The power switch cabinet convenient for locking of a load switch and a disconnecting switch as claimed in claim 1, wherein: the cover plate is provided with a shielding part for shielding the operating shaft of the load switch, and the shielding part and the cover plate are of an integrated structure.
7. The power switch cabinet convenient for locking of a load switch and a disconnecting switch as claimed in claim 6, wherein: one end of the cover plate is provided with a first connecting plate connected with the first lock rod, the other end of the cover plate is provided with a second connecting plate abutted against the travel switch, and the first connecting plate and the second connecting plate are integrally formed with the cover plate.
8. The power switch cabinet for facilitating the locking of a load switch and a disconnecting switch as claimed in claim 7, wherein: the travel switch comprises a thimble, and is in a normally closed state when the thimble is compressed by the cover plate, and is in a normally open state when the thimble is released.
9. The power switch cabinet convenient for locking of a load switch and a disconnecting switch as claimed in claim 1, wherein: the cabinet body is also internally provided with a fixed plate for mounting a travel switch.
10. The power switch cabinet convenient for locking of a load switch and a disconnecting switch as claimed in claim 1, wherein: the cabinet body is internally provided with a mounting plate for respectively mounting a first program lock and a second program lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011578234.6A CN112750636B (en) | 2020-12-28 | 2020-12-28 | Power switch cabinet convenient for locking load switch and isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011578234.6A CN112750636B (en) | 2020-12-28 | 2020-12-28 | Power switch cabinet convenient for locking load switch and isolating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112750636A CN112750636A (en) | 2021-05-04 |
| CN112750636B true CN112750636B (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011578234.6A Active CN112750636B (en) | 2020-12-28 | 2020-12-28 | Power switch cabinet convenient for locking load switch and isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112750636B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203165731U (en) * | 2013-01-31 | 2013-08-28 | 浙江科润电力设备有限公司 | Load switch operating mechanism |
| CN108831779A (en) * | 2018-08-21 | 2018-11-16 | 广东省江门市新会电气控制设备厂有限公司 | A kind of vacuum loading switch cabinet interlock |
| CN208538725U (en) * | 2018-08-09 | 2019-02-22 | 裕力电气有限公司 | A kind of five anti-interlocking gears for on-load switch |
| CN210897109U (en) * | 2019-12-19 | 2020-06-30 | 浙江巨瑞电气科技有限公司 | Switch cabinet operating mechanism with interlocking function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3073017A1 (en) * | 2019-02-22 | 2020-08-22 | Eaton Intelligent Power Limited | Motor control center (mcc) units with dual disconnect switches, dual operator handles, retractable power connector and interlocks |
-
2020
- 2020-12-28 CN CN202011578234.6A patent/CN112750636B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203165731U (en) * | 2013-01-31 | 2013-08-28 | 浙江科润电力设备有限公司 | Load switch operating mechanism |
| CN208538725U (en) * | 2018-08-09 | 2019-02-22 | 裕力电气有限公司 | A kind of five anti-interlocking gears for on-load switch |
| CN108831779A (en) * | 2018-08-21 | 2018-11-16 | 广东省江门市新会电气控制设备厂有限公司 | A kind of vacuum loading switch cabinet interlock |
| CN210897109U (en) * | 2019-12-19 | 2020-06-30 | 浙江巨瑞电气科技有限公司 | Switch cabinet operating mechanism with interlocking function |
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| Publication number | Publication date |
|---|---|
| CN112750636A (en) | 2021-05-04 |
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