CN114464494A - Direct current isolating switch - Google Patents
Direct current isolating switch Download PDFInfo
- Publication number
- CN114464494A CN114464494A CN202210073734.7A CN202210073734A CN114464494A CN 114464494 A CN114464494 A CN 114464494A CN 202210073734 A CN202210073734 A CN 202210073734A CN 114464494 A CN114464494 A CN 114464494A
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- mounting plate
- assembly
- auxiliary switch
- moving contact
- switch
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- 230000005540 biological transmission Effects 0.000 claims abstract description 69
- 230000003068 static effect Effects 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000012634 fragment Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 238000002955 isolation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a direct current isolating switch, which comprises a first mounting plate and a transmission driving assembly penetrating through the first mounting plate, wherein a first static contact assembly and a second static contact assembly are arranged on one side surface of the first mounting plate, the first static contact assembly is fixed on the first mounting plate through a first insulating column, the second static contact assembly is fixed on the first mounting plate through a second insulating column, the direct current isolating switch also comprises a moving contact assembly, the moving contact assembly comprises a moving contact system and a moving contact connecting rod fixedly connected with the moving contact system, one end of the moving contact connecting rod penetrates through the first mounting plate, the first static contact assembly is hinged with the moving contact system, one end of the moving contact connecting rod penetrates through the first mounting plate and is provided with a cam, and the two sides of the cam are provided with auxiliary switch modules which are driven by the cam to perform switching operation, the direct current isolating switch can drive the auxiliary switch to be switched on and switched off when the isolating switch is switched on and off, and the time accuracy of the auxiliary switch signal feedback is ensured.
Description
Technical Field
The invention relates to the field of switches, in particular to a direct-current isolating switch.
Background
Along with the continuous development and construction of urban rail transit in China, the high-power electric locomotive is put into operation, under the form that electric traction is increasing day by day, a disconnecting switch in an electric power supply system becomes an important component in the power supply system, so the requirements on equipment and personal safety are higher and higher, meanwhile, the requirements on daily maintenance and maintenance frequency are higher, the disconnecting switch is required to have longer mechanical life, and because the disconnecting knife is convenient to operate, a control motor is adopted, the normally open and normally closed loop of an auxiliary switch is switched to control the forward and reverse rotation of electric control, so that the switch on-off brake is driven, the safety and the reliability of a transmission limiting part of the disconnecting switch and the time accuracy of switching of the auxiliary switch are extremely important to the service life of the disconnecting switch.
In the existing isolating switch, the opening and closing of the isolating switch and the switching of the auxiliary switch are respectively and independently controlled, so that the time accuracy of the switching of the auxiliary switch cannot be ensured.
Disclosure of Invention
The invention aims to provide a direct-current isolating switch which can ensure the accuracy of the switching time of an auxiliary switch.
The technical scheme adopted by the invention for solving the technical problem is as follows: a direct-current isolating switch comprises a first mounting plate and a transmission driving assembly penetrating through the first mounting plate, wherein a first static contact assembly and a second static contact assembly are respectively arranged on one side surface of the first mounting plate, the first static contact assembly is fixed on the first mounting plate through a first insulating column, and the second static contact assembly is fixed on the first mounting plate through a second insulating column;
still include the moving contact subassembly, the moving contact subassembly include moving contact system and with moving contact system fixed connection's moving contact connecting rod, first mounting panel is passed to moving contact connecting rod one end, first quiet contact subassembly and moving contact system hinged joint, the moving contact connecting rod passes first mounting panel one end and is provided with the cam, the cam both sides are provided with the auxiliary switch module of doing the switching operation by cam drive.
Further, the method comprises the following steps: the transmission driving assembly comprises a transmission assembly and a transmission shaft sleeve assembly, the transmission assembly comprises a transmission shaft, a transmission rod is arranged at the tail end of the transmission shaft, the transmission driving assembly further comprises a connecting rod, one end of the connecting rod is hinged to the transmission rod, the other end of the connecting rod is hinged to the middle of the movable contact system, the transmission shaft sleeve assembly comprises a transmission shaft sleeve, the transmission shaft is arranged in the transmission shaft sleeve and can rotate relative to the transmission shaft sleeve, and the shaft sleeve is fixed on the first mounting plate.
Further, the method comprises the following steps: the limiting pin is arranged on one side of the front end of the transmission shaft, a second guide groove for the limiting pin to extend out is arranged on the shaft sleeve, the second guide groove is parallel to the first mounting plate, and elastic pieces are arranged at two ends of the inner side of the second guide groove.
Further, the method comprises the following steps: and clamping grooves are formed in the two ends of the inner side of the second guide groove, and the elastic pieces are clamped in the clamping grooves.
Further, the method comprises the following steps: the auxiliary switch module comprises a first auxiliary switch and a second auxiliary switch, and auxiliary switch adjusting mechanisms are arranged on one sides of the first auxiliary switch and the second auxiliary switch.
Further, the method comprises the following steps: the auxiliary switch guiding mechanism comprises a mounting bracket and an adjusting assembly arranged on one side of the mounting bracket, wherein a first auxiliary switch and a second auxiliary switch are respectively mounted on the mounting bracket, the mounting bracket is fixedly connected with the first mounting plate, the adjusting assembly comprises a sliding block and a second mounting plate, the sliding block is vertically provided with a square groove, a cylindrical shaft is arranged on the mounting bracket, the cylindrical shaft extends into the square groove, two adjusting plates respectively located on two sides of the sliding block are arranged on the second mounting plate, and a jacking screw in contact with the sliding block is arranged on each adjusting plate.
Further, the method comprises the following steps: be provided with first guide slot on the mounting panel, slider bottom both ends stretch into in the first guide slot.
Further, the method comprises the following steps: be provided with screw hole and waist type groove on the first mounting panel, be provided with the screw of fixing to screw hole and waist type inslot on the installing support.
Further, the method comprises the following steps: the width of the second guide groove is smaller than or equal to the thickness of the first mounting plate.
The invention has the beneficial effects that:
1. the switch can drive the auxiliary switch to be switched on and off when the isolating switch is switched off and switched off through the arrangement of the cam, and the time accuracy of signal feedback of the auxiliary switch is ensured.
2. The setting of adjustment subassembly can realize adjusting the position of second auxiliary switch, guarantees that the cam can be accurate and controls the auxiliary switch subassembly, guarantees the accuracy of auxiliary switch signal feedback, guarantees the safety of driving piece simultaneously.
3. The setting of spacer pin and shell fragment can prevent that the driving piece from driving the transfer line motion, because inertia takes place hard interference when stopping the position, destroys the mechanical strength of moving system.
Drawings
Fig. 1 is a schematic diagram of an overall assembly structure of a dc isolation switch according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a transmission assembly of a dc isolation switch according to an embodiment of the present application.
Fig. 3 is a schematic assembly diagram of a movable contact assembly of a dc isolation switch according to an embodiment of the present application.
Fig. 4 is a schematic diagram of an auxiliary switch module of a dc isolation switch according to an embodiment of the present application.
Fig. 5 is a partial characteristic diagram of a mounting plate of a dc isolation switch according to an embodiment of the present application.
Fig. 6 is a schematic view of a transmission assembly and a transmission sleeve relationship of a dc isolation switch according to an embodiment of the present application.
Labeled as: the switch comprises a first mounting plate 100, a threaded hole 100a, a kidney-shaped groove 100b, a first guide groove 100c, a transmission assembly 200, a transmission shaft 201, a transmission rod 202, a limit pin 203, a transmission shaft sleeve assembly 300, a transmission shaft sleeve 301, a second guide groove 301a, a clamping groove 301b, an elastic sheet 302, an auxiliary switch module 400, a first auxiliary switch 401, a mounting bracket 402, a cylindrical shaft 402a, an adjusting assembly 403, a second mounting plate 4031, a sliding block 4032, a tightening screw 4033, a movable contact assembly 500, a connecting rod 501, a movable contact system 502, a movable contact connecting rod 503, a cam 504, a first fixed contact assembly 600, a second fixed contact assembly 700, a first insulating column 800 and a second insulating column 900.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the embodiment of the present application discloses a dc isolation switch, which structurally includes a first mounting plate 100 and a transmission driving assembly penetrating through the first mounting plate 100. The first mounting plate 100 is provided at one side thereof with a first stationary contact assembly 600 and a second stationary contact assembly 700, respectively. The first stationary contact assembly 600 is fixed to the first mounting plate 100 by a first insulating column 800, and the second stationary contact assembly 700 is fixed to the first mounting plate 100 by a second insulating column 900.
The moving contact assembly 500 is further included, and the moving contact assembly 500 includes a moving contact system 502 and a moving contact connecting rod 503 fixedly connected to the moving contact system 502. One end of the movable contact connecting rod 503 passes through the first mounting plate 100, the first fixed contact assembly 600 is hinged with the movable contact system 502, one end of the movable contact connecting rod 503 passing through the first mounting plate 100 is provided with a cam 504, and two sides of the cam 504 are provided with auxiliary switch modules 400 which are driven by the cam 504 to open and close.
Specifically, the moving contact system 502 is disposed on two sides of the first fixed contact, and is in contact with the first fixed contact, and the transmission driving component is connected to an external driving mechanism, such as a motor, and the auxiliary switch module 400 is connected to an external control module and sends a feedback signal.
During operation, the transmission driving component drives the transmission driving component to move, the transmission driving component drives the moving contact system 502 to rotate through the moving contact connecting rod 503, the moving contact system 502 without trouble rotates and is in contact conduction with the second fixed contact, the closing operation is realized, meanwhile, the rotation of the moving contact system 502 drives the cam 504 to rotate, the cam 504 drives the auxiliary switch module 400 to open and close, and therefore the auxiliary switch module 400 sends a feedback signal.
The arrangement of the cam 504 and the moving contact connecting rod 503 can realize that the isolating switch drives the auxiliary switch to be opened and closed when the isolating switch is opened and closed, and the time accuracy of signal feedback of the auxiliary switch is ensured, so that the service life of the isolating switch is ensured.
In this embodiment, the transmission driving assembly includes a transmission assembly 200 and a transmission shaft sleeve assembly 300, the transmission assembly 200 includes a transmission shaft 201, a transmission rod 202 is disposed at a tail end of the transmission shaft 201, the transmission driving assembly further includes a connection rod 501, one end of the connection rod 501 is hinged to the transmission rod 202, the other end of the connection rod 501 is hinged to the middle of the movable contact system 502, the transmission shaft sleeve assembly 300 includes a transmission shaft sleeve 301, the transmission shaft 201 is disposed in the transmission shaft sleeve 301 and can rotate relative to the transmission shaft sleeve 301, and the shaft sleeve is fixed on the first mounting plate 100.
In the above structure, the driving rod 202 is connected to an external rotation driving assembly to drive the driving rod 202 to rotate.
During specific work, the external rotation driving component drives the transmission rod 202 to rotate, the transmission rod 202 drives the connecting rod 501 to move, and the connecting rod 501 drives the moving contact system 502 to rotate, so that the moving contact system 502 is in contact with or away from the second fixed contact, and the function of opening and closing the brake is realized.
The design of above-mentioned structure, simple and practical, it can guarantee the accurate operation of switching floodgate function.
In this embodiment, a limit pin 203 is disposed on one side of the front end of the transmission shaft 201, a second guide groove 301a for extending the limit pin 203 is disposed on the shaft sleeve, the second guide groove 301a is parallel to the first mounting plate 100, and elastic pieces 302 are disposed at two ends of the inner side of the second guide groove 301 a.
During specific work, the transmission shaft 201 rotates, so that the limit pin 203 slides in the second guide groove 301a, when the limit pin 203 slides to the end of the second guide groove 301a, the limit pin 203 contacts the elastic sheet 302, and the elastic force of the elastic sheet 302 counteracts the inertia acting force when the transmission shaft 201 stops moving, so that the transmission shaft 201 stops quickly.
The arrangement of the second guide groove 301a in the above structure can limit the rotation angle of the transmission shaft 201, and the arrangement of the inner elastic sheet 302 can prevent the transmission shaft 201 from generating hard interference due to inertia when the driving of the external rotation driving mechanism is stopped, thereby damaging the mechanical strength of the motion system.
In this embodiment, two ends of the inner side of the second guide slot 301a are provided with a clamping slot 301b, and the elastic piece 302 is clamped in the clamping slot 301 b.
In the structure, the elastic sheet 302 is clamped in the clamping groove 301b, so that the installation firmness of the elastic sheet 302 can be ensured, the elastic sheet 302 can be conveniently detached, and the elastic sheet 302 can be rapidly replaced when being damaged.
In this embodiment, the auxiliary switch module 400 includes a first auxiliary switch 401 and a second auxiliary switch, and an auxiliary switch adjusting mechanism is disposed on one side of each of the first auxiliary switch and the second auxiliary switch.
The first mounting plate 100 is provided with a threaded hole 100a and a waist-shaped groove 100b, and the mounting bracket 402 is provided with screws fixed in the threaded hole 100a and the waist-shaped groove 100 b.
Specifically, the first auxiliary switch 401 and the second auxiliary switch are both available as switch products, and the auxiliary switch is provided with a push rod, and pushing the push rod means that the auxiliary switch is closed, and pushing the push rod does not means that the auxiliary switch is opened.
During operation, when the position of first auxiliary switch or second auxiliary switch needs to be adjusted, unscrew the screw of fixing in screw hole 100a and waist type groove 100b for first auxiliary switch or second auxiliary switch use screw hole 100a as the center when screw hole 100a does not tighten, screw hole 100a to waist type groove 100b center hole moment is the radius rotation adjustment, make when cam 504 rotates, can accurately carry out the switching operation to first auxiliary switch 401 and second auxiliary switch, when the adjustment is accomplished, tighten the screw.
Through the design of above-mentioned structure, can realize the adjustment to first auxiliary switch or second auxiliary switch position to make it can form better cooperation to first stationary contact subassembly 600, second stationary contact subassembly 700 and moving contact subassembly 500.
In this embodiment, the auxiliary switch adjusting mechanism includes a mounting bracket 402 and an adjusting assembly 403 disposed on one side of the mounting bracket 402, the first auxiliary switch and the second auxiliary switch are respectively mounted on the mounting bracket 402, the mounting bracket 402 is fixedly connected to the first mounting plate 100, the adjusting assembly 403 includes a slider 4032 and a second mounting plate 4031, the slider 4032 is vertically provided with a square groove, the mounting bracket 402 is provided with a cylindrical shaft 402a, the cylindrical shaft 402a extends into the square groove, the second mounting plate 4031 is provided with two adjusting plates respectively located on two sides of the slider 4032, and the adjusting plates are provided with tightening screws 4033 contacting the slider 4032.
When fine adjustment is needed, the screw is firstly loosened, and then the tightening screw 4033 is rotated to push the sliding block 4032 to move, so that the sliding block 4032 drives the cylindrical shaft 402a on the mounting bracket 402 to move, and the cylindrical shaft 402a drives the first auxiliary switch or the second auxiliary switch to perform position adjustment.
In the structure, the position of the sliding block 4032 can be slightly changed by rotating the tightening screw, so that the position adjustment of the first auxiliary switch or the second auxiliary switch is more accurate.
In this embodiment, the mounting plate is provided with a first guide groove 100c, and two ends of the bottom of the slider 4032 extend into the first guide groove 100 c.
When the second auxiliary switch is positionally adjusted, the slider 4032 is adjusted in the direction of the first guide groove 100 c.
The arrangement of the first guide groove 100c in the above structure can guide the movement of the slider 4032, thereby ensuring the accuracy of the position adjustment of the second auxiliary switch.
In this embodiment, the width of the second guide groove 301a is less than or equal to the thickness of the first mounting plate 100.
The arrangement of the structure can enable the limit pin 203 to be located in the first mounting plate 100, so that the condition that the limit pin 203 falls off can be prevented, and the service life of the whole direct-current isolating switch is ensured.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A kind of direct current disconnecting switch, characterized by: the device comprises a first mounting plate (100) and a transmission driving assembly penetrating through the first mounting plate (100), wherein a first static contact assembly (600) and a second static contact assembly (700) are respectively arranged on one side surface of the first mounting plate (100), the first static contact assembly (600) is fixed on the first mounting plate (100) through a first insulating column (800), and the second static contact assembly (700) is fixed on the first mounting plate (100) through a second insulating column (900);
still include moving contact subassembly (500), moving contact subassembly (500) including moving contact system (502) and with moving contact system (502) fixed connection's moving contact connecting rod (503), first mounting panel (100) is passed to moving contact connecting rod (503) one end, first static contact subassembly (600) and moving contact system (502) hinged joint, moving contact connecting rod (503) pass first mounting panel (100) one end and are provided with cam (504), cam (504) both sides are provided with and are the auxiliary switch module (400) of switching operation by cam (504) drive.
2. A dc link switch as defined in claim 1, wherein: the transmission driving assembly comprises a transmission assembly (200) and a transmission shaft sleeve assembly (300), the transmission assembly (200) comprises a transmission shaft (201), a transmission rod (202) is arranged at the tail end of the transmission shaft (201), the transmission driving assembly further comprises a connecting rod (501), one end of the connecting rod (501) is hinged to the transmission rod (202), the other end of the connecting rod (501) is hinged to the middle of the movable contact system (502), the transmission shaft sleeve assembly (300) comprises a transmission shaft sleeve (301), the transmission shaft (201) is arranged in the transmission shaft sleeve (301) and can rotate relative to the transmission shaft sleeve (301), and the shaft sleeve is fixed on the first mounting plate (100).
3. A dc link switch as claimed in claim 2, wherein: the utility model discloses a bearing support of a motor vehicle, including transmission shaft (201), front end one side is provided with spacer pin (203), be provided with the guide slot that supplies spacer pin (203) to stretch out on the axle sleeve, second guide slot (301a) are parallel with first mounting panel (100), second guide slot (301a) inboard both ends are provided with shell fragment (302).
4. A dc link switch as claimed in claim 3, wherein: clamping grooves (301b) are formed in two ends of the inner side of the second guide groove (301a), and the elastic sheet (302) is clamped in the clamping grooves (301 b).
5. A dc link switch as defined in claim 1, wherein: the auxiliary switch module (400) comprises a first auxiliary switch (401) and a second auxiliary switch, and auxiliary switch adjusting mechanisms are arranged on one sides of the first auxiliary switch and the second auxiliary switch.
6. A dc link switch as defined in claim 5, wherein: the auxiliary switch adjusting mechanism comprises a mounting bracket (402) and an adjusting assembly (403) arranged on one side of the mounting bracket (402), the first auxiliary switch and the second auxiliary switch are respectively mounted on the mounting bracket (402), the mounting bracket (402) is fixedly connected with the first mounting plate (100), the adjusting assembly (403) comprises a sliding block (4032) and a second mounting plate (4031), the sliding block (4032) is vertically provided with a square groove, a cylindrical shaft (402a) is arranged on the mounting bracket (402), the cylindrical shaft (402a) extends into the square groove, two adjusting plates respectively located on two sides of the sliding block (4032) are arranged on the second mounting plate (4031), and a tightening screw (4033) in contact with the sliding block (4032) is arranged on each adjusting plate.
7. A dc link switch as defined in claim 6, wherein: the mounting plate is provided with a first guide groove (100c), and two ends of the bottom of the sliding block (4032) extend into the first guide groove (100 c).
8. A dc link switch as defined in claim 6, wherein: the first mounting plate (100) is provided with a threaded hole (100a) and a waist-shaped groove (100b), and the mounting bracket (402) is provided with screws fixed in the threaded hole (100a) and the waist-shaped groove (100 b).
9. A dc link switch as claimed in claim 3, wherein: the width of the second guide groove (301a) is less than or equal to the thickness of the first mounting plate (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210073734.7A CN114464494B (en) | 2022-01-21 | 2022-01-21 | DC isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210073734.7A CN114464494B (en) | 2022-01-21 | 2022-01-21 | DC isolating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114464494A true CN114464494A (en) | 2022-05-10 |
| CN114464494B CN114464494B (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210073734.7A Active CN114464494B (en) | 2022-01-21 | 2022-01-21 | DC isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114464494B (en) |
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| CN206441672U (en) * | 2016-11-17 | 2017-08-25 | 武汉长海电气科技开发有限公司 | Normally closed D.C. contactor |
| CN206657770U (en) * | 2017-04-21 | 2017-11-21 | 上海宝灵超亚电器有限公司 | Vacuum circuit breaker propulsive mechanism |
| CN107910221A (en) * | 2017-11-14 | 2018-04-13 | 武汉长海电气科技开发有限公司 | A kind of tri-station isolating switch |
| CN208834970U (en) * | 2018-09-25 | 2019-05-07 | 浙江奔一电气有限公司 | The disconnecting switch for preventing moving contact from misplacing |
| CN209087678U (en) * | 2018-10-26 | 2019-07-09 | 武汉倍诺德开关有限公司 | A kind of novel manual disconnecting switch with ground |
| CN210837584U (en) * | 2019-12-30 | 2020-06-23 | 沈阳东牧电器制造有限公司 | Novel AC/DC auxiliary switch |
| CN212365824U (en) * | 2020-11-16 | 2021-01-15 | 南京全屋电器开关有限公司 | Novel high-low voltage isolating switch |
| CN214043574U (en) * | 2020-12-25 | 2021-08-24 | 默飓电气有限公司 | Manual separating brake adjusting mechanism |
| CN213752408U (en) * | 2020-12-29 | 2021-07-20 | 余姚市华宇电器有限公司 | Adjustable auxiliary switch switching structure |
| CN214477110U (en) * | 2021-03-28 | 2021-10-22 | 大运汽车股份有限公司 | Multi-gear wiper intermittent time regulating switch |
| CN214254241U (en) * | 2021-03-31 | 2021-09-21 | 浙江越岭电气有限公司 | Indoor high-voltage isolating switch |
| CN215007825U (en) * | 2021-06-15 | 2021-12-03 | 郑州郑源电气有限公司 | Voltage transformer supports chassis |
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| CN114464494B (en) | 2024-03-29 |
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