CN204516598U - A kind of single-phase rolling loop type contact off circuit tap changer - Google Patents
A kind of single-phase rolling loop type contact off circuit tap changer Download PDFInfo
- Publication number
- CN204516598U CN204516598U CN201520241433.6U CN201520241433U CN204516598U CN 204516598 U CN204516598 U CN 204516598U CN 201520241433 U CN201520241433 U CN 201520241433U CN 204516598 U CN204516598 U CN 204516598U
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- switch
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- switch base
- die cavity
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Abstract
The utility model relates to a kind of single-phase rolling loop type contact off circuit tap changer, and structure is the upper end of switch base is round tube shape mounting flange, and lower end is that half-round tubular determines contact; On switch shaft, axle is cylindrical iron axle, and lower shaft is T-shaped shaft insulation, is connected with lower shaft by axle on heat ductile forming, and upper lower shaft is coaxial; Dynamic contact mechanism constrains in the horizontal die cavity of switch shaft T-shaped shaft insulation; Switch shaft top penetrating switch seat, and corresponding site constrains in the centre bore of switch base mounting flange, lower constraint is in the through hole of switch base lower end, switch shaft axle center is coaxial with switch base axle center, the contact ring position constraining in dynamic contact mechanism in the horizontal die cavity of switch shaft be arranged on switch base to determine contact position corresponding, and determine contact Elastic Contact with wherein adjacent two.The utility model has that volume of switch is little, low cost of manufacture, and transferring the files can automatic homing produce playback feel, improve the reliability of switch performance, is convenient to the advantages such as Optimum Design of Transformers.
Description
Technical field
The utility model relates to a kind of single-phase rolling loop type contact off circuit tap changer.
Background technology
In vast city, the farm-to-market road road lamp power supply used that throws light on is a kind of single-phase transformer.The type transformer capacity is little, volume is little, all adopts pole mounting means.The casing of transformer is circular or oval, wherein must use a kind of single-phase excitation-free tapping switch.The single-phase excitation-free tapping switch of present use still adopts traditional threephase switch version: switch movable contact adopts clip type structure; Determine that contact and switch base are fixing adopts the pre-buried screw in compression mode of mold insert; Determine contact to be connected with transformer coil tap lead and to adopt line terminals and bolted mode.Be directed at that volume of switch is large, manufacturing cost is high, inconvenient Optimum Design of Transformers.
Summary of the invention
The utility model, in order to overcome above-mentioned defect, provides a kind of single-phase rolling loop type contact off circuit tap changer, has that volume of switch is little, low cost of manufacture, transferring the files can automatic homing produce playback feel, is convenient to the advantages such as Optimum Design of Transformers.
The technical solution of the utility model is:
A kind of single-phase rolling loop type contact off circuit tap changer, by switch base, revolvable switch shaft, dynamic contact mechanism and determine contact and form, is characterized in that:
Described switch base global shape is cylindrical revolving body, and upper end is round tube shape, and lower end is half-round tubular; Upper end round tube shape is used for mounting flange, and lower end semi-circular tube inner wall even distribution is provided with 6 vertical half slots, the center line of each half slot and switch base centerline parallel, and each half slot place bottom switch base is designed with a through hole, for determining contact; An open slot is provided with, for increasing creepage distance between adjacent two halves circular groove;
Switch shaft is made up of upper axle, lower shaft two parts, upper axle is cylindrical iron axle, and lower shaft is that T-shaped shaft insulation thermoplastic is made, and is connected with lower shaft by axle on heat ductile forming, and upper axle is coaxial with lower shaft, in the die cavity of T-shaped shaft insulation, constrain the dynamic contact mechanism of switch; Switch shaft top penetrating switch seat, and corresponding site constrains in the centre bore of the mounting flange of switch base, lower constraint is in the through hole of switch base lower end, the axle center of switch shaft is coaxial with switch base axle center, the position constraining in the contact ring of the dynamic contact mechanism in the horizontal die cavity of switch shaft be arranged on switch base to determine contact position corresponding, and determine contact Elastic Contact with wherein adjacent two.
Described switch base is thermoplastic injection molded.
The aperture of one through hole of described each half slot and half slot diameter and tubular to determine contact diameter identical.
Described contact of determining adopts copper tube to be designed to L shape, the one end of wherein determining contact L shape through switch base half slot one end circular hole and be fixed on switch base by plastic deformation press-in, and the part passing switch base is for being connected with colding pressing of transformer coil tap lead; The other end one semi-cylindrical determining will ensure while contact is fixed on switch base to determine contact L shape be bumped into and be close to switch base half slot inwall, second half face of cylinder is exposed, the contact ring Elastic Contact with it of switch is convenient on the exposed face of cylinder.
Described contact ring is circular.
The lower shaft indoor design of described switch shaft has a horizontal die cavity, the axial line vertical symmetry of horizontal cavity surface and switch shaft, one end of horizontal die cavity is designed to a rectangular opening, and the width of rectangular opening and the external diameter of contact ring match, the height of rectangular opening and the thickness matching of contact ring; A hole is designed with in the middle part of the other end of switch shaft, through by a circular hole between rectangular opening and silk hole.
Described dynamic contact mechanism is made up of contact ring, cylindrical spring, steel ball and adjustment bolt, contact ring slips in horizontal die cavity by the rectangular opening of switch shaft, at the position that horizontal die cavity is corresponding, one dielectric pin is installed, contact ring constrains in the horizontal die cavity of switch shaft through the centre bore of contact ring by dielectric pin, and be provided with appropriate gap between the centre bore of dielectric pin and contact ring, ensure that contact ring can have along switch shaft horizontal die cavity line of symmetry and suitable reciprocate distance, normally contact so that contact determined by contact ring and switch; Load steel ball, cylindrical spring according to order, finally screw in adjustment bolt from another terminal filament hole of the horizontal die cavity of switch shaft, by adjustment bolt screw-in length, cylindrical spring is compressed and produce elastic force, elastic force is delivered to contact ring by steel ball, thus makes contact ring and determine to produce enough contacts between contact.To reach designing requirement.
Its operation principle is: when station conversion is carried out in switch shaft rotation, the contact ring constrained in switch shaft makes compound motion.1. contact ring rotates around self center of circle; 2. come and go rectilinear movement along switch shaft die cavity line of symmetry; 3. with switch shaft synchronous rotary.Be transformed into the process of another station at contact ring from a station, when contact ring reach determine the contact face of cylinder peak time effect at coherence and cylindrical spring elastic force under, contact ring is cut into adjacent two fast and determines to produce between contact transfer the files playback feel Elastic Contact with it.Adjacent two are made to determine contact short circuit.To cold pressing with voltage regulating coil of transformer tap lead be connected owing to determining contact, therefore the conversion of the station of single-phase shunting switch can change the voltage regulating coil of transformer number of turn to reach the object of adjustment voltage.
The utility model has that volume of switch is little, low cost of manufacture, transferring the files can automatic homing produce playback feel, improve the reliability of switch performance, be convenient to the advantages such as Optimum Design of Transformers.
Accompanying drawing explanation
Fig. 1 a is front view of the present utility model.
Fig. 1 b is the M-M cutaway view of Fig. 1 a.
Fig. 2 a is the front view of switch shaft of the present utility model.
Fig. 2 b is the N-N cutaway view of Fig. 2 a.
Fig. 3 a is the front view of switch base of the present utility model.
Fig. 3 b is the P-P cutaway view of Fig. 3 a.
Fig. 3 c is the I direction view of Fig. 3 a.
Embodiment
Below in conjunction with example and accompanying drawing, the utility model is described in further detail, but should not limit protection range of the present utility model with this.
By reference to the accompanying drawings this switch is further described:
As shown in Fig. 1 a, Fig. 1 b, Fig. 2 a, Fig. 2 b, Fig. 3 a, Fig. 3 b, Fig. 3 c, switch base 12 is the basic framework part of switch, and its shape is cylindrical revolving body, by thermoplastic injection molded.Its top is round tube shape, for installing fixed flange 9; Bottom is half-round tubular, semi-circular tube inner wall even distribution arranges six vertical half slots, the center line of each half slot and switch base centerline parallel, and each half slot place bottom switch base is designed with a through hole, an open slot is provided with, for increasing creepage distance between adjacent two halves circular groove; One end that 6 L shape determine contact 18 is each passed through the circular hole of six half slot ends on switch base, and be fixed on switch base 12 by plastic deformation press-in, the other end one semi-cylindrical determining contact 18 of L shape is bumped into and is close to switch base half slot inwall, makes 6 L shape determine contact 18 and is fixed on switch base 12.As shown in Fig. 1 a, 1b and Fig. 2 a, Fig. 2 b, switch shaft 11 is made up of upper axle, lower shaft two parts, and upper axle is cylindrical iron axle, and lower shaft is that T-shaped shaft insulation thermoplastic is made, be connected with lower shaft by axle on heat ductile forming, and upper axle is coaxial with lower shaft.The lower shaft indoor design of described switch shaft has a horizontal die cavity, the axial line vertical symmetry of horizontal cavity surface and switch shaft, one end of horizontal die cavity is designed to a rectangular opening, and the width of rectangular opening and the external diameter of contact ring match, the height of rectangular opening and the thickness matching of contact ring; A hole is designed with in the middle part of the other end of switch shaft, through by a circular hole between rectangular opening and silk hole.Contact ring 16 is slipped in the rectangular opening in the horizontal die cavity of switch shaft 11; Again that dielectric pin 17 is simultaneously also fixing through the centre bore on switch shaft 11 rectangular opening die cavity and on contact ring 16; Contact ring 16 is constrained in the horizontal die cavity of switch shaft 11, and keeps in touch ring 16 have appropriate freedom in switch shaft 11 die cavity.On switch shaft 11, axle penetrates from switch base 12 lower center hole, is passed by the centre bore of ring flange 9; On switch shaft 11, axle constrains in the centre bore of ring flange 9, and switch shaft 11 lower shaft constrains in switch base 12 lower center hole.For guaranteeing that switch shaft 11 is rotatable but play corresponding site can not being provided with banking pin 10 up and down.The contact ring 16 of switch and determine the generation of the contact between contact 18: steel ball 15, cylindrical spring 14 are loaded in the silk hole of horizontal die cavity one end of switch shaft 11 according to order, finally screwing in adjustment bolt 13, regulating the size of contact pressure by screwing in adjustment bolt 13 length.The seal form of switch is traditional approach: interior sealing is ensured by interior seal 5, interior plug screw 4; External seal is ensured by outer seal 8, outer nut 6, bowl-type pad 7; For ease of to regulate and location also uses traditional approach: on switch shaft 11, shaft end is provided with handle 2, steady pin 3, rain cover 1, ring flange 9 upper end correspondence position be provided with location notch.
Switch-mode regulation method and operation principle:
Screw off rain cover 1, extract the keeper of handle 2; Rotary handle 2 makes switch shaft 11 synchronous rotary.The contact ring 16 simultaneously constrained in switch shaft 11 makes compound motion: 1. contact ring 16 rotates around self center of circle, 2. comes and goes rectilinear movement along switch shaft die cavity line of symmetry; 3. with switch shaft synchronous rotary.Be transformed into the process of another station at contact ring 16 from a station, when contact ring 16 reach determine contact 18 face of cylinder peak time effect at coherence and cylindrical spring elastic force under, contact ring 16 is cut into adjacent two fast and determines to produce between contact 18 transfer the files playback feel Elastic Contact with it, makes adjacent two to determine contact short circuit.To cold pressing with voltage regulating coil of transformer tap lead be connected owing to determining contact 18, therefore the conversion of the station of single-phase shunting switch can change the voltage regulating coil of transformer number of turn to reach the object of adjustment voltage.After handle 2 rotates to required station, part must be located and snap in the location notch of ring flange 9 correspondence, then rain cover 1 is restored.Regulate complete.
Because this switch movable contact adopts rolling ring structure; Determine the mode that contact adopts plastic deformation and switch base to fix; Determine contact to be connected employing with transformer coil tap lead and to cold pressing connected mode.Can effectively reduce switch diameter, reduce the manufacturing cost of switch and the use cost of switch, transfer the files and also can produce playback feel, improve the reliability of switch performance by automatic homing, be convenient to Optimum Design of Transformers.
Claims (7)
1. a single-phase rolling loop type contact off circuit tap changer, by switch base, revolvable switch shaft, dynamic contact mechanism and determine contact and form, is characterized in that:
Described switch base global shape is cylindrical revolving body, and upper end is round tube shape, and lower end is half-round tubular; Upper end round tube shape is used for mounting flange, and lower end semi-circular tube inner wall even distribution is provided with 6 vertical half slots, the center line of each half slot and switch base centerline parallel, and each half slot is designed with a through hole near switch lower curtate place, for determining contact; An open slot is provided with, for increasing creepage distance between adjacent two halves circular groove;
Switch shaft is made up of upper axle, lower shaft two parts, and upper axle is cylindrical iron axle, and lower shaft is that T-shaped shaft insulation thermoplastic is made, and be connected, and upper axle is coaxial with lower shaft by axle on heat ductile forming with lower shaft; Dynamic contact mechanism constrains in the horizontal die cavity of the T-shaped shaft insulation of switch shaft; Switch shaft top penetrating switch seat and mounting flange, and corresponding site constrains in the centre bore of the mounting flange of switch base, lower constraint is in the through hole of switch base lower end, the axle center of switch shaft is coaxial with switch base axle center, the position constraining in the contact ring of the dynamic contact mechanism in the horizontal die cavity of switch shaft be arranged on switch base to determine contact position corresponding, and determine contact Elastic Contact with wherein adjacent two.
2. single-phase rolling loop type contact off circuit tap changer according to claim 1, is characterized in that: described switch base is thermoplastic injection molded.
3. single-phase rolling loop type contact off circuit tap changer according to claim 1, is characterized in that: the aperture of a through hole of described each half slot and half slot diameter and tubular to determine contact diameter identical.
4. single-phase rolling loop type contact off circuit tap changer according to claim 1, it is characterized in that: described contact of determining adopts copper tube to be designed to L shape, the one end of wherein determining contact L shape through switch base half slot one end circular hole and be fixed on switch base by plastic deformation press-in, and the part passing switch base is for being connected with colding pressing of transformer coil tap lead; The other end one semi-cylindrical determining will ensure while contact is fixed on switch base to determine contact L shape be bumped into and be close to switch base half slot inwall, second half face of cylinder is exposed.
5. single-phase rolling loop type contact off circuit tap changer according to claim 1, is characterized in that: described contact ring is circular.
6. single-phase rolling loop type contact off circuit tap changer according to claim 1, it is characterized in that: the lower shaft indoor design of described switch shaft has a horizontal die cavity, the axial line vertical symmetry of horizontal cavity surface and switch shaft, one end of horizontal die cavity is designed to a rectangular opening, the width of rectangular opening and the external diameter of contact ring match, the height of rectangular opening and the thickness matching of contact ring; A hole is designed with in the middle part of the other end of switch shaft, through by a circular hole between rectangular opening and silk hole.
7. single-phase rolling loop type contact off circuit tap changer according to claim 1, it is characterized in that: described dynamic contact mechanism is by contact ring, cylindrical spring, steel ball and adjustment bolt composition, contact ring slips in horizontal die cavity by the rectangular opening of switch shaft, at the position that horizontal die cavity is corresponding, one dielectric pin is installed, contact ring constrains in the horizontal die cavity of switch shaft through the centre bore of contact ring by dielectric pin, and be provided with appropriate gap between the centre bore of dielectric pin and contact ring, ensure that contact ring can have along switch shaft horizontal die cavity line of symmetry and suitable reciprocate distance, normally contact so that contact determined by contact ring and switch, load steel ball, cylindrical spring according to order, finally screw in adjustment bolt from another terminal filament hole of the horizontal die cavity of switch shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520241433.6U CN204516598U (en) | 2015-04-21 | 2015-04-21 | A kind of single-phase rolling loop type contact off circuit tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520241433.6U CN204516598U (en) | 2015-04-21 | 2015-04-21 | A kind of single-phase rolling loop type contact off circuit tap changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204516598U true CN204516598U (en) | 2015-07-29 |
Family
ID=53714546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520241433.6U Expired - Fee Related CN204516598U (en) | 2015-04-21 | 2015-04-21 | A kind of single-phase rolling loop type contact off circuit tap changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204516598U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752076A (en) * | 2015-04-21 | 2015-07-01 | 武汉长虹恒通高压设备有限公司 | Single-phase rolling-ring type contact off-circuit tap changer |
| CN105914061A (en) * | 2016-06-22 | 2016-08-31 | 武汉泰普联合分接开关股份有限公司 | Operation positioning device for non-excitation tapping switch |
| CN108987145A (en) * | 2017-06-05 | 2018-12-11 | 乐清市飓达电器厂 | A kind of novel tap switch |
-
2015
- 2015-04-21 CN CN201520241433.6U patent/CN204516598U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752076A (en) * | 2015-04-21 | 2015-07-01 | 武汉长虹恒通高压设备有限公司 | Single-phase rolling-ring type contact off-circuit tap changer |
| CN105914061A (en) * | 2016-06-22 | 2016-08-31 | 武汉泰普联合分接开关股份有限公司 | Operation positioning device for non-excitation tapping switch |
| CN108987145A (en) * | 2017-06-05 | 2018-12-11 | 乐清市飓达电器厂 | A kind of novel tap switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20170421 |