CN213424848U - Non-excitation tapping switch with circular arc structure - Google Patents
Non-excitation tapping switch with circular arc structure Download PDFInfo
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- CN213424848U CN213424848U CN202022862441.6U CN202022862441U CN213424848U CN 213424848 U CN213424848 U CN 213424848U CN 202022862441 U CN202022862441 U CN 202022862441U CN 213424848 U CN213424848 U CN 213424848U
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- rack
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- circular arc
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Abstract
The utility model provides an off-circuit tapping switch of convex structure, the problem that solve is: how easily adjust tap changer, the utility model discloses a main points are: the gear rack mechanism is formed by sequentially meshing a driving gear, a driven gear and a circular arc rack made of an insulating material, wherein the driven gear is arranged on the base, and the circular arc rack is a section of an internal gear; the fixed insulating strip plate is arc-shaped, the arc-shaped rack is installed on the arc-shaped fixed insulating strip plate, and the radians of the arc-shaped rack and the arc-shaped fixed insulating strip plate are completely attached. The utility model has the advantages that: the tap changer can be easily adjusted.
Description
Technical Field
The utility model relates to a bar tapping switch that is used for three-dimensional roll iron core transformer of triangle-shaped.
Background
CN106783264A discloses a bar-type tap switch for a triangular three-dimensional wound core transformer, which includes an adjusting mechanism 2, the adjusting mechanism includes a rack and pinion mechanism formed by meshing a pinion 22 and a rack 23, the pinion 22 is connected with an operating cover 21 through a wheel shaft penetrating through a base 1, the rack 23 and a moving contact group are fixed on a sliding insulating strip plate 8, the sliding insulating strip plate is installed on a fixed insulating strip plate 6 in a sliding manner, the fixed insulating strip plate 6 is fixed on one side of the base 1 through a bracket 1 a; it has three tapping mechanisms, the form of which includes embodiment 1 (see fig. 2), wherein the fixed insulating lath and the sliding insulating lath of two tapping mechanisms are respectively connected into a whole (hereinafter, two connected tapping mechanisms) and installed on one side of the hexagonal base, and the third tapping mechanism is installed on the other side which is spaced apart (hereinafter, independent tapping mechanism). By rotating the operation cover 21, the three tapping mechanisms can be driven by the pinion-and-rack mechanism to synchronously switch the wiring positions (see paragraph 0041 and paragraph 0047 of the specification). As can be seen with reference to fig. 1-10, the rack is a conventional rack, namely spur rack 23, and correspondingly the sliding insulating strip 8 is in the form of a bar. The gear is meshed with the spur rack, complete meshing cannot be achieved, the meshing area is small, labor is consumed in rotating the operation cover, particularly, pressing force of the movable contact is required to be increased for good contact of the contact and reduction of contact resistance, and therefore an operator needs to rotate the operation cover with larger force.
Disclosure of Invention
In order to solve the technical problem, the present invention provides an off-circuit tap changer with a circular arc structure.
The purpose of the utility model is realized like this: to CN106783264A the utility model discloses a main improvement point is: 1. the sliding insulating lath and the rack are combined into a whole, namely the rack is made of insulating materials; 2. the rack is in the shape of a circular arc, namely a section of the inner gear. The scheme is specifically that it includes rack and pinion mechanism, fixed insulating slat, base, characterized by: the rack in the gear rack mechanism is an insulating circular arc rack; the fixed insulating strip plate is arc-shaped (a section of a circular ring), and the insulating arc-shaped rack is installed on the arc-shaped fixed insulating strip plate in a sliding mode to form an arc-shaped rack fixed insulating strip plate assembly. The handle (CN 106783264A operation cover) is rotated, the driving gear in the gear rack mechanism is driven to rotate left and right, the insulation circular arc rack and the moving contact thereof are driven to slide left and right on the fixed insulation slat and the static contact thereof, and the synchronous switching of the wiring positions of the three tapping mechanisms is completed.
Compared with the prior art, the utility model has the positive effects that: because the straight rack is changed into the circular arc rack, the meshing area of the gear and the circular arc rack is increased, the transmission ratio is increased, and even if the pressing force of the movable contact is increased, the gear can be shifted by only using small force.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of embodiment 1 of the present invention.
Fig. 2 is a bottom view of fig. 1.
Fig. 3 is a schematic diagram of embodiment 2 of the present invention.
Fig. 4 is a schematic view of embodiment 3 of the present invention.
Detailed Description
The handle 2 is rotated, the driving gear and the driven gear rotate left and right in sequence to drive the arc-shaped rack to slide left and right on the fixed insulating batten, namely the movable contact group 7 slides left and right on the fixed contact group 6, and synchronous switching of the wiring positions of the three tapping mechanisms is completed.
In embodiment 2 (see fig. 3), the difference from embodiment 1 is that the circular arc-shaped rack fixed insulating strip plate assembly is only applied to two integrally connected tapping mechanisms 12; and the independent tapping mechanism 11 uses a straight rack fixed insulation strip plate assembly.
Example 3 (see fig. 4), in contrast to example 2, the circular arc-shaped rack fixed insulation strip assembly is applied only on the individual tapping mechanism 11; and the two integrated tapping mechanisms 12 use a straight rack fixed insulation strip plate assembly.
Claims (3)
1. The utility model provides an off-circuit tap-changer of convex structure, it includes rack and pinion mechanism, fixed insulating slat and base, characterized by: the gear rack mechanism is formed by sequentially meshing a driving gear and a circular arc rack made of an insulating material, wherein the circular arc rack is a section of an internal gear; the fixed insulating slat is arc-shaped, and the arc-shaped rack is arranged on the arc-shaped fixed insulating slat to form an arc-shaped rack fixed insulating slat assembly.
2. The non-excited tap changer of circular arc structure as claimed in claim 1, wherein: the gear rack mechanism is formed by sequentially meshing a driving gear, a driven gear and a circular arc rack made of insulating materials, and the driven gear is installed on the base.
3. The non-excited tap changer of circular arc configuration according to claim 1 or 2, characterized in that: the arc-shaped rack fixing insulation strip plate component is applied to one or all of two integrally connected tapping mechanisms and independent tapping mechanisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022862441.6U CN213424848U (en) | 2020-12-03 | 2020-12-03 | Non-excitation tapping switch with circular arc structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022862441.6U CN213424848U (en) | 2020-12-03 | 2020-12-03 | Non-excitation tapping switch with circular arc structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213424848U true CN213424848U (en) | 2021-06-11 |
Family
ID=76252730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022862441.6U Active CN213424848U (en) | 2020-12-03 | 2020-12-03 | Non-excitation tapping switch with circular arc structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213424848U (en) |
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2020
- 2020-12-03 CN CN202022862441.6U patent/CN213424848U/en active Active
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