CN116487168B - Sliding tap switch and transformer for offshore wind power - Google Patents
Sliding tap switch and transformer for offshore wind power Download PDFInfo
- Publication number
- CN116487168B CN116487168B CN202310442520.7A CN202310442520A CN116487168B CN 116487168 B CN116487168 B CN 116487168B CN 202310442520 A CN202310442520 A CN 202310442520A CN 116487168 B CN116487168 B CN 116487168B
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- Prior art keywords
- tapping
- contact head
- sliding
- pieces
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010079 rubber tapping Methods 0.000 claims abstract description 76
- 230000000670 limiting effect Effects 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
- H01H15/02—Details
- H01H15/06—Movable parts; Contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a sliding tapping switch and a transformer for offshore wind power, wherein the sliding tapping switch for offshore wind power comprises: the base is provided with a chute extending along the vertical direction; the contact head is slidably arranged in the chute; the first sheet group and the second sheet group are respectively arranged on two opposite side walls of the chute, each of the first sheet group and the second sheet group comprises a plurality of tapping pieces used for being connected with taps of the coil, the tapping pieces of the first sheet group and the tapping pieces of the second sheet group are alternately arranged along the length direction of the chute, and two tapping pieces which are adjacent from top to bottom form a power receiving group; when the contact head slides to be abutted with the two tapping pieces of one of the power connection groups, the two tapping pieces in the power connection groups are elastically clamped on the contact head. The sliding tapping switch for offshore wind power with the structure has the advantages of convenient and quick gear shifting and good conductive contact. The transformer comprises the sliding tapping switch for offshore wind power, and is convenient and quick to shift and good in conductive contact.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a sliding tap switch and a transformer for offshore wind power.
Background
Existing transformers typically provide multiple taps on the coil, with the taps being connected to different taps by split tabs, thereby changing the number of turns of the coil to regulate the output voltage of the transformer. Specifically, the tap is connected between two taps by a bolt to turn on the coil. When the gear is required to be shifted, people unscrew the bolts and adjust the positions of the split sheets, so that the split sheets are connected with corresponding taps required to be shifted, the bolts are screwed down again subsequently to ensure that the split sheets are in good contact with the taps, and the whole gear shifting process is relatively troublesome and long in time.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the sliding tapping switch for offshore wind power is convenient and quick to shift, and the contact head is well contacted with the tapping piece, so that the conductive stability is improved.
The invention also discloses a transformer which comprises the tapping switch, is convenient and quick to shift, has good contact between the contact head and the tapping piece, and is beneficial to improving the conductive stability.
According to an embodiment of the first aspect of the invention, a sliding tap changer for offshore wind power comprises: the base is provided with a chute extending along the vertical direction; the contact head is arranged on the chute; the first sheet group and the second sheet group are respectively arranged on two opposite side walls of the sliding chute, each of the first sheet group and the second sheet group comprises a plurality of tapping pieces used for being connected with taps of the coil, the tapping pieces of the first sheet group and the tapping pieces of the second sheet group are alternately arranged along the length direction of the sliding chute, and two tapping pieces which are adjacent from top to bottom form a power connection group; when the contact head slides to be abutted against the two tapping pieces of one of the power receiving groups, the two tapping pieces in the power receiving groups are elastically clamped on the contact head.
According to the embodiment of the invention, the sliding tapping switch for offshore wind power has at least the following beneficial effects: when the coil is used, the tapping piece is connected to the tapping head of the coil, and then the contact head is moved, so that the contact head is abutted to two tapping pieces of one of the power connection groups, a coil loop connected with the tapping head is connected, and the two tapping pieces are elastically clamped to the contact head to ensure good contact between the two tapping pieces, and the conductive stability of the coil is improved. When the gear is required to be shifted, the gear can be shifted only by moving the contact head to be abutted against a corresponding group of electric groups, the previous operation of screwing or unscrewing the bolts is not required, and the gear shifting is rapid and convenient.
In some embodiments of the present invention, one of the tapping piece and the contact head is provided with a guide groove, and the other is provided with a protrusion, wherein the guide groove extends along the vertical direction, and the protrusion is in clamping fit with the guide groove.
In some embodiments of the present invention, the tapping sheet includes a flat plate portion and a folded plate portion connected to each other, the flat plate portion is connected to the base, the folded plate portion is disposed opposite to an inner wall of the chute, and an elastic member is disposed between the folded plate portion and the inner wall of the chute, and the elastic member drives the folded plate portion to be capable of keeping contact with the contact head.
In some embodiments of the invention, the flat plate portion is connected to the base by a threaded fastener.
In some embodiments of the present invention, the base is provided with a plurality of clamping slots corresponding to the power connection groups one by one, the contact head is rotatably provided with a limiting piece, and when the contact head slides to one of the power connection groups, the limiting piece can rotate to be clamped in the corresponding clamping slot.
In some embodiments of the present invention, the contact further comprises a handle detachably inserted into the contact, one of the handle and the contact is provided with a slot, and the other is provided with a fixture block, and the slot is in insertion fit with the fixture block.
In some embodiments of the invention, the upper end of the base is provided with a receiving slot for receiving the handle.
In some embodiments of the invention, the dividing piece and the contact head are both metal pieces, and the base and the handle are insulating pieces.
In some embodiments of the present invention, the base is provided with a limiting groove communicated with the sliding groove, and the contact head is provided with a plug-in part, and the plug-in part is matched with the limiting groove to limit the contact head to be separated from the sliding groove.
The invention also discloses a transformer, which comprises the sliding tapping switch for offshore wind power according to any one of the technical schemes.
The transformer provided by the embodiment of the invention has at least the following beneficial effects: the gear shifting is carried out when the transformer is powered off, the tapping piece is connected to the tapping head of the coil, then the contact head is moved, so that the contact head is abutted to two tapping pieces of one of the power receiving groups, a coil loop connected with the tapping point is connected, and the two tapping pieces are elastically clamped to the contact head to ensure good contact between the two tapping pieces, and the conductive stability of the coil is improved. In the whole gear shifting process, gear shifting can be completed only by moving the contact head to be abutted against a corresponding group of electric groups, the previous operation of screwing or unscrewing the bolts is not needed, and gear shifting is rapid and convenient.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of an embodiment of a sliding tap changer for offshore wind power according to the present invention;
FIG. 2 is an exploded view of the embodiment of FIG. 1;
FIG. 3 is an enlarged view of a portion at A in FIG. 2;
FIG. 4 is a schematic view of an assembly of the tap and contact of FIG. 2;
fig. 5 is a schematic view of the handle and tap of fig. 2 assembled.
In the figure: the base 100, the sliding chute 110, the clamping groove 120, the accommodating groove 130, the limit groove 140, the first sinking groove 150, the second sinking groove 160, the contact 200, the protrusion 210, the limit piece 220, the slot 230, the plug-in part 240, the separating piece 300, the flat plate part 301, the folded plate part 302, the guide groove 310, the elastic piece 400, the threaded fastener 500, the handle 600 and the clamping block 610.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 5, a sliding tap changer for offshore wind power, comprising: a base 100, a contact 200, a first set of tabs, and a second set of tabs. Specifically, the base 100 is provided with a chute 110 extending in the vertical direction; the contact 200 is arranged on the chute 110; the first sheet group and the second sheet group are respectively arranged on two opposite side walls of the chute 110, each of the first sheet group and the second sheet group comprises a plurality of tapping pieces 300 for being connected with taps of the coil, the tapping pieces 300 of the first sheet group and the tapping pieces 300 of the second sheet group are alternately arranged along the length direction of the chute 110, and two tapping pieces 300 which are adjacent from top to bottom form a power connection group; when the contact 200 slides to abut against the two tapping tabs 300 of one of the power connection groups, the two tapping tabs 300 of the power connection group are elastically clamped to the contact 200.
When the sliding tapping switch for offshore wind power with the structure is used, the tapping piece 300 is connected to the tapping head of the coil, and then the contact head 200 is moved, so that the contact head 200 is abutted against the two tapping pieces 300 of one of the power connection groups, a coil loop connected with the tapping head is connected, the two tapping pieces 300 are elastically clamped to the contact head 200 to ensure good contact between the two tapping pieces, and the conductive stability of the coil is improved. When gear shifting is needed, gear shifting can be completed only by moving the contact head 200 to be abutted against a corresponding group of electric groups, and the conventional operation of screwing or unscrewing bolts is not needed, so that gear shifting is rapid and convenient. It can be understood that the first sheet set is provided with three tapping pieces 300, the second sheet set is provided with three tapping pieces 300, the six tapping pieces 300 are alternately arranged along the length direction of the chute 110, and two tapping pieces 300 adjacent from top to bottom form one power receiving set, so as to form five power receiving sets to correspond to five gears of the coil. Of course, the number of the power receiving groups is selected and adjusted according to practical situations, and is not limited in particular.
Referring to fig. 2 and fig. 4, in some embodiments of the present invention, one of the tapping sheet 300 and the contact 200 is provided with a guide slot 310, and the other is provided with a protrusion 210, where the guide slot 310 is extended in a vertical direction, and the protrusion 210 is in snap fit with the guide slot 310, so that, on one hand, the contact 200 is ensured to be in good contact with the tapping sheet 300, and the compactibility of the two is improved, and on the other hand, the movement of the tapping contact 200 in the chute 110 is facilitated to be guided and limited, and the smoothness of the movement of the contact 200 is improved.
Referring to fig. 2 to 4, in some embodiments of the present invention, the tapping sheet 300 includes a flat plate portion 301 and a folded plate portion 302 connected to each other, the flat plate portion 301 is connected to the base 100, the folded plate portion 302 is disposed opposite to the inner wall of the chute 110, and an elastic member 400 is disposed between the folded plate portion 302 and the inner wall of the chute 110, and the elastic member 400 drives the folded plate portion 302 to be capable of keeping in contact with the contact head 200.
Specifically, the base 100 is provided with a first sinking groove 150 adapted to the flat plate portion 301, the side wall of the chute 110 is provided with a second sinking groove 160 communicated with the first sinking groove 150, the flat plate portion 301 is internally provided with the first sinking groove 150, the folded plate portion 302 is internally provided with the second sinking groove 160, the bottom of the second sinking groove 160 is provided with a guide post, the elastic piece 400 is sleeved outside the guide post, the elastic piece 400 is abutted to the folded plate portion 302 to drive the folded plate portion 302 to deform towards one side far away from the second sinking groove 160, so that the two tapping pieces 300 can generate an elastic clamping force on the butt joint 200, and good contact between the contact head 200 and the tapping pieces 300 is ensured. It can be understood that the flat plate portion 301 and the folded plate portion 302 are formed by bending a metal member into an integral structure, so that the falling-off of the folded plate portion 302 can be reduced. It should be noted that, with the left side of the chute 110 being the first sheet set and the right side being the second sheet set, two adjacent flap portions 302 located on the left side each have a region overlapping with one flap portion 302 located on the right side, so that the subsequent contact 200 can move to the overlapping region to conduct the two opposite flap portions 302.
Referring to fig. 1 and 2, in some embodiments of the invention, the flat plate portion 301 is connected to the base 100 by a threaded fastener 500. It should be noted that the flat plate portion 301 is also in contact with the tap via the threaded fastener 500, so that the tap 300 and the tap can be electrically conductive to each other, so that the coil loop to which the tap is connected is subsequently closed.
Referring to fig. 1 and fig. 2, in some embodiments of the present invention, the base 100 is provided with a plurality of clamping slots 120 corresponding to the power connection groups one by one, the contact 200 is rotatably provided with a limiting piece 220, and when the contact 200 slides to one of the power connection groups, the limiting piece 220 can rotate to be clamped to the corresponding clamping slot 120, so as to fix the position of the contact 200, thereby being beneficial to avoiding the conductive state of the coil from being disconnected due to the subsequent movement of the contact 200, and further ensuring the normal operation of the transformer. Specifically, two limiting pieces 220 are provided, and two tapping pieces 300 of each power receiving group are correspondingly provided with one clamping groove 120, so that the two sides of the butt joint 200 are limited, and the limiting effect of the butt joint 200 is improved. It can be appreciated that the limiting piece 220 is pivotally connected to the contact 200, the contact 200 is a metal piece, and the limiting piece 220 is a plastic piece, which is beneficial to reducing the material cost.
Referring to fig. 1, 2 and 5, in some embodiments of the present invention, the contact further includes a handle 600 detachably inserted into the contact 200, one of the handle 600 and the contact 200 is provided with a slot 230, and the other is provided with a latch 610, and the slot 230 is in insertion fit with the latch 610 so that the handle 600 can drive the contact 200 to slide. Specifically, when the contact 200 needs to be moved, the slot 230 is matched with the clamping block 610, so that the handle 600 can be installed in a plug-in mode relative to the contact 200, and the contact 200 can be driven by people to move through the handle 600, so that the assembly and the disassembly are simple and convenient, and the use experience of people is improved.
Referring to fig. 1 and 2, in some embodiments of the present invention, in order to facilitate placement of the used handle 600, the upper end of the base 100 is provided with a receiving groove 130 for placement of the handle 600.
In some embodiments of the present invention, tap 300 and contact 200 are both metallic pieces and base 100 and handle 600 are insulating pieces. Specifically, to ensure the insulation performance of the components, the base 100 and the shift knob 600 are made of an insulating material capable of withstanding temperatures of 120 ℃ or higher, such as pp plastic or epoxy resin. And the tapping plate 300 and the contact 200 may be made of copper material so as to secure the conductivity of both.
Referring to fig. 1, 2 and 5, in some embodiments of the present invention, the base 100 is provided with a limiting groove 140 in communication with the chute 110, and the contact 200 is provided with a plug portion 240, and the plug portion 240 cooperates with the limiting groove 140 to limit the contact 200 from being separated from the chute 110. Specifically, the limiting groove 140 is a rectangular groove, and the plugging portion 240 is adapted to the rectangular groove to improve the compactness of the two, so as to further limit the contact 200 from being separated from the chute 110. In addition, the limiting groove 140 and the upper end of the sliding groove 110 are provided with openings, so that people can pass the contact 200 through the openings from top to bottom to be arranged in the sliding groove 110, and the assembly efficiency of the contact 200 is improved.
The invention also discloses a transformer, which comprises the sliding tapping switch for offshore wind power according to any one of the technical schemes.
The transformer provided by the embodiment of the invention has at least the following beneficial effects: the gear shifting is performed when the transformer is powered off, the tapping piece 300 is connected to the tap, then the contact 200 is moved, so that the contact 200 is abutted to two tapping pieces 300 of one of the power receiving groups, a coil loop connected with the tap is connected, and the two tapping pieces 300 are elastically clamped to the contact 200 to ensure good contact between the two tapping pieces, and the conductive stability of the coil is improved. In the whole gear shifting process, gear shifting can be completed only by moving the contact head 200 to be abutted against a corresponding group of electric groups, the previous operation of screwing or unscrewing the bolts is not needed, and gear shifting is rapid and convenient.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. The utility model provides a slidingtype tapping switch for offshore wind power which characterized in that includes:
a base (100) provided with a chute (110) extending in the vertical direction;
the contact head (200) is arranged on the chute (110);
the first sheet group and the second sheet group are respectively arranged on two opposite side walls of the sliding chute (110), each of the first sheet group and the second sheet group comprises a plurality of tapping pieces (300) used for being connected with taps of a coil, the tapping pieces (300) of the first sheet group and the tapping pieces (300) of the second sheet group are alternately arranged along the length direction of the sliding chute (110), and two tapping pieces (300) adjacent from top to bottom form a power connection group;
wherein when the contact head (200) slides to be abutted with the two tapping pieces (300) of one of the power connection groups, the two tapping pieces (300) in the power connection group are elastically clamped on the contact head (200);
the tapping piece (300) comprises a flat plate part (301) and a folded plate part (302) which are connected with each other, the flat plate part (301) is connected with the base (100), the folded plate part (302) is arranged opposite to the inner wall of the sliding chute (110), an elastic piece (400) is arranged between the folded plate part (302) and the inner wall of the sliding chute (110), and the elastic piece (400) drives the folded plate part (302) to keep contact with the contact head (200);
the base (100) is provided with a plurality of clamping grooves (120) corresponding to the power connection groups one by one, the contact head (200) is rotationally provided with a limiting piece (220), and when the contact head (200) slides to one of the power connection groups, the limiting piece (220) can rotate to be clamped in the corresponding clamping groove (120);
the contact head comprises a contact head (200) and a handle (600) which is detachably inserted into the contact head (200), wherein one of the handle (600) and the contact head (200) is provided with a slot (230), the other is provided with a clamping block (610), and the slot (230) is in insertion fit with the clamping block (610) so that the handle (600) can drive the contact head (200) to slide; the tapping sheet (300) and the contact head (200) are metal parts, and the base (100) and the handle (600) are insulating parts.
2. The sliding tap changer for offshore wind power according to claim 1, wherein:
one of the tapping sheet (300) and the contact head (200) is provided with a guide groove (310), the other is provided with a protrusion (210), the guide groove (310) extends along the vertical direction, and the protrusion (210) is in clamping fit with the guide groove (310).
3. The sliding tap changer for offshore wind power according to claim 1, wherein:
the flat plate portion (301) is connected to the base (100) by a threaded fastener (500).
4. The sliding tap changer for offshore wind power according to claim 1, wherein:
the upper end of the base (100) is provided with a containing groove (130) for placing the handle (600).
5. The sliding tap changer for offshore wind power according to claim 1, wherein:
the base (100) is provided with a limiting groove (140) communicated with the sliding groove (110), the contact head (200) is provided with a plug-in part (240), and the plug-in part (240) is matched with the limiting groove (140) to limit the contact head (200) to be separated from the sliding groove (110).
6. A transformer characterized by comprising a sliding tap changer for offshore wind power according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310442520.7A CN116487168B (en) | 2023-06-27 | 2023-06-27 | Sliding tap switch and transformer for offshore wind power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310442520.7A CN116487168B (en) | 2023-06-27 | 2023-06-27 | Sliding tap switch and transformer for offshore wind power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116487168A CN116487168A (en) | 2023-07-25 |
| CN116487168B true CN116487168B (en) | 2023-11-21 |
Family
ID=87220848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310442520.7A Active CN116487168B (en) | 2023-06-27 | 2023-06-27 | Sliding tap switch and transformer for offshore wind power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116487168B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7527441U (en) * | 1975-09-15 | 1976-01-15 | Baer Elektrowerke Kg, 5885 Schalksmuehle | Electric slide switch |
| CN2314461Y (en) * | 1997-10-23 | 1999-04-14 | 归文武 | Straight change-over switch |
| CN101299382A (en) * | 2008-02-29 | 2008-11-05 | 王继忠 | Directly-mounting type bar shape wiring block and slide tapping switch using the same |
| CN108831720A (en) * | 2018-06-05 | 2018-11-16 | 河南森源电气股份有限公司 | Dry-type transformer taps plot structure |
-
2023
- 2023-06-27 CN CN202310442520.7A patent/CN116487168B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7527441U (en) * | 1975-09-15 | 1976-01-15 | Baer Elektrowerke Kg, 5885 Schalksmuehle | Electric slide switch |
| CN2314461Y (en) * | 1997-10-23 | 1999-04-14 | 归文武 | Straight change-over switch |
| CN101299382A (en) * | 2008-02-29 | 2008-11-05 | 王继忠 | Directly-mounting type bar shape wiring block and slide tapping switch using the same |
| CN108831720A (en) * | 2018-06-05 | 2018-11-16 | 河南森源电气股份有限公司 | Dry-type transformer taps plot structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116487168A (en) | 2023-07-25 |
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