CN219892065U - Guide rail type split contact - Google Patents
Guide rail type split contact Download PDFInfo
- Publication number
- CN219892065U CN219892065U CN202321555612.8U CN202321555612U CN219892065U CN 219892065 U CN219892065 U CN 219892065U CN 202321555612 U CN202321555612 U CN 202321555612U CN 219892065 U CN219892065 U CN 219892065U
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- contact
- arc
- arc section
- moving
- driving
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- 229920001342 Bakelite® Polymers 0.000 claims description 7
- 239000004637 bakelite Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229910000906 Bronze Inorganic materials 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 239000010974 bronze Substances 0.000 claims description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 abstract description 14
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to the field of voltage transformation equipment, in particular to a guide rail type split contact which comprises a base, wherein a plurality of groups of fixed contacts are arranged on the base in a surrounding manner, and a plurality of moving contacts which are suitable for the plurality of groups of fixed contacts are arranged on the base in a sliding manner; the movable contact is provided with a driving end and a plurality of connecting ends, the plurality of fixed contacts and the plurality of connecting ends of the movable contact are arranged one by one, and the fixed contacts are arranged on a movable path of the connecting ends of the movable contact; the device also comprises a driving disc, wherein the driving disc is coaxially arranged with the base, a plurality of arc-shaped track grooves are formed in the driving disc, and the arc-shaped track grooves and the moving contacts are arranged one by one; the driving end of the moving contact is buckled into the arc-shaped track groove, and when the driving end of the moving contact slides along the extending direction of the arc-shaped track groove, the connecting end of the moving contact is connected with the fixed contact with different gears. The utility model has the effect of reducing the possibility of abrasion generated by the contact of the tapping switch during adjustment.
Description
Technical Field
The utility model relates to the field of voltage transformation equipment, in particular to a guide rail type split contact.
Background
An on-load tap changer refers to a device that can operate in a transformer excited or loaded state to change the tap of a transformer, thereby regulating the output voltage of the transformer. The basic principle of the on-load tap-changer is that after a plurality of taps are led out from a high-voltage winding of a transformer, one tap is switched to another tap under the condition of not interrupting load current to change the effective turns, namely the voltage ratio of the transformer is changed, so that the purpose of regulating voltage is realized.
At present, most of contact types adopted on tapping switches are in the form of clamping sheets, and in the voltage regulation process of the clamping sheet type contact, the contact ends of a moving contact and a fixed contact are easy to rub with each other, so that the clamping sheet type contact is easy to wear after long-term use, and the service lives of the fixed contact and the moving contact are influenced; in addition, metal powder generated by friction between the fixed contact and the movable contact is easy to adhere to the surface of the insulating piece, so that the insulating performance of an insulating medium is affected, a 'creepage' phenomenon occurs, and the service life of the disconnector is affected.
Disclosure of Invention
In order to reduce the possibility of abrasion generated by the contact of the tapping switch during adjustment and prolong the service life of the tapping switch, the utility model provides a guide rail type split contact.
The utility model provides a guide rail type split contact which adopts the following technical scheme:
the guide rail type split contact comprises a base, wherein a plurality of groups of fixed contacts are arranged on the base in a surrounding mode, and a plurality of moving contacts which are adapted to the fixed contacts are arranged on the base in a sliding mode; the movable contact is provided with a driving end and a plurality of connecting ends, the plurality of fixed contacts and the plurality of connecting ends of the movable contact are arranged one by one, and the fixed contacts are arranged on a movable path of the connecting ends of the movable contact; the device comprises a base, a driving disc, a plurality of moving contacts and a plurality of arc-shaped track grooves, wherein the driving disc is coaxially arranged with the base, the driving disc is provided with the arc-shaped track grooves, and the arc-shaped track grooves and the moving contacts are arranged one by one; the driving end of the moving contact is buckled into the arc-shaped track groove, and when the driving end of the moving contact slides along the extending direction of the arc-shaped track groove, the connecting end of the moving contact is connected with the fixed contact with different gears.
Through adopting above-mentioned technical scheme, every group static contact all sets up on the movable path of the link of moving contact, when adjusting tap changer's gear, only need control driving disk drive moving contact along the extending direction reciprocating motion of arc track groove to make the link and the static contact butt of moving contact, can accomplish the switching to tap changer gear, reduce tap changer's contact and produce the possibility of wearing and tearing when adjusting, extension tap changer's life.
Optionally, two fixed contacts are arranged in each group, two connecting ends of the moving contact are arranged, the two connecting ends are symmetrically arranged at two ends of the moving contact in the length direction, and the connecting ends of the moving contact are arranged in one-to-one correspondence with the conducting ends of the fixed contact; the connecting ends of the two moving contacts rotate circumferentially by taking the driving ends of the moving contacts as axes; the static contact is provided with a conducting part, and the end wall of the conducting part, which is close to one end of the driving disc, can be abutted by the connecting end of the moving contact.
Through adopting above-mentioned technical scheme, the drive end of moving contact can drive the link round trip oscillation that is located moving contact length direction both ends when following arc track groove extending direction reciprocating motion for the link and the conduction end butt of stationary contact of moving contact, conduction end and external electric wire are connected, realize the switching of gear.
Optionally, the arc track groove comprises a first arc section, a switching arc section and a second arc section which are sequentially communicated, the axes of the first arc section and the second arc section are arranged in a collinear manner with the axis of the base, and the diameters of the first arc section and the second arc section are different; the driving disc is provided with a driving shaft, and the driving shaft is used for reciprocally adjusting the driving end of the moving contact from the first arc section to the second arc section.
Through adopting above-mentioned technical scheme, when the driving disk rotates, when the drive end of moving contact is by reciprocal sliding between first arc and the second arc, under the unchangeable circumstances of rotation center, because moving contact drive end pivoted diameter changes, thereby moving contact swing is forced with the inner wall butt of switching the arc to the drive end of moving contact, the link and the former stationary contact disconnection of moving contact, another link of moving contact uses the drive end of movable spindle nose as the axle center to be close to the stationary contact that corresponds with this link of moving contact, realizes the switching of gear.
Optionally, the lengths of the first arc section and the second arc section are both greater than the length of the switching arc section.
By adopting the technical scheme, the length of the first arc section and the length of the second arc section are both larger than the length of the switching arc section, and when the driving end of the moving contact slides along the first arc section (or the second arc section), the connecting end of the moving contact can always keep a state of being connected with the fixed contact, so that the gear change of the moving contact and the fixed contact caused by the shaking of the switch is reduced; meanwhile, the distance between the first arc section and the second arc section is longer, so that the connection ends of the fixed contact and the moving contact can be in a closed state in a certain time period, namely, an intermittent switch state is realized.
Optionally, the one end that switches on the portion and be close to the driving disk is provided with the extensible member, the one end of extensible member with switch on the portion and be connected, the other end is provided with the butt piece, the butt piece with the extensible member all adopts electrically conductive material, the butt piece can supply the link butt of moving contact.
By adopting the technical scheme, after the connecting end of the moving contact is abutted with the abutting block, the moving contact is communicated with the fixed contact; when the connecting end of the moving contact is abutted with the abutting block, the expansion piece is deformed under the action of external force, so that the abutting block is abutted with the connecting end of the moving contact, meanwhile, the hard contact between the connecting end of the moving contact and the abutting block can be reduced, the possibility that the contact of the tapping switch is worn during adjustment is reduced, and the service life of the tapping switch is prolonged.
Optionally, the extensible member adopts the spring, the one end of spring with switch-on portion is connected, the other end with the butt piece is connected, the extensible member adopts phosphor bronze's material.
By adopting the technical scheme, the spring made of the phosphor bronze material has good conductivity, high elasticity, no rust and easy welding, and is convenient for working personnel to process and maintain the static contact.
Optionally, the moving contact is close to the lateral wall of driving disk one side is provided with the gyro wheel that is adapted to the arc track groove, the gyro wheel with the lateral wall rotation of moving contact is connected, the outer fringe side butt of gyro wheel in the inside wall in arc track groove.
Through adopting above-mentioned technical scheme, the moving contact can roll in the arc track inslot after the gyro wheel when carrying out the gear adjustment to force the frictional force between the two to reduce, make the moving contact more smooth and easy when carrying out the gear switching.
Optionally, the base and the driving disc are made of insulating bakelite materials.
Through adopting above-mentioned technical scheme, bakelite material's driving disk and base have higher mechanical strength and good insulating property, and bakelite heat resistance and corrosion resistance are stronger for base and driving disk's life is longer.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. when the driving disc rotates, when the driving end of the moving contact slides back and forth between the first arc section and the second arc section, under the condition that the rotation center is unchanged, the driving end of the moving contact is abutted with the inner wall of the switching arc section so as to force the moving contact to swing, the connecting end of the moving contact is disconnected with the original fixed contact, the other connecting end of the moving contact moves towards the fixed contact corresponding to the connecting end of the moving contact by taking the driving end of the moving shaft head as the axis, and the gear switching is realized; when the abutting block abuts against the connecting end of the moving contact, the telescopic piece can deform, so that the hard contact between the connecting end of the moving contact and the abutting block can be reduced when the abutting block abuts against the connecting end of the moving contact, the possibility of abrasion of the contact of the tapping switch during adjustment is reduced, and the service life of the tapping switch is prolonged.
Drawings
FIG. 1 is a schematic view of a track-type split contact in accordance with the present utility model;
fig. 2 is a schematic structural diagram of a group of stationary contacts in this embodiment.
Reference numerals: 1. a base; 2. a stationary contact; 21. a conduction part; 22. a first contact; 23. a second contact; 3. a moving contact; 31. a roller; 32. a roller; 4. a drive plate; 41. a drive shaft; 5. an arc-shaped track groove; 51. a first arc segment; 52. a second arc segment; 53. switching the arc section; 6. a telescoping member; 7. and abutting the block.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-2.
The embodiment of the utility model discloses a guide rail type split contact.
Referring to fig. 1, a guide rail type split contact includes a base 1, a plurality of fixed contacts 2 are arranged on the base 1, the fixed contacts 2 are distributed uniformly along the peripheral wall of the base 1 in groups, the fixed contacts 2 are connected with external wires, and in this embodiment, one group is described as an example; the upper surface of the base 1 is connected with moving contacts 3 matched with each group of fixed contacts 2 in a sliding manner, each moving contact 3 comprises a driving end and connecting ends, in the embodiment, two connecting ends of each moving contact 3 are arranged, and the two connecting ends of each moving contact 3 are respectively arranged at two ends of the moving contact 3 in the length direction; the two fixed contacts 2 are arranged on the movable path of the connecting end of the moving contact 3, and the intended connecting end of the moving contact 3 can be connected with any one fixed contact 2, so that gear switching between the moving contact 3 and a plurality of fixed contacts 2 is realized.
A driving disc 4 is arranged on one side of the moving contact 3 away from the base 1, in the embodiment, the driving disc 4 and the axis of the base 1 are arranged in a collinear manner, the moving contact 3 is arranged between the driving disc 4 and the base 1, and the driving end of the moving contact 3 is movably connected with the driving disc 4; one end of the fixed contact 2, which is close to the driving disc 4, is provided with a conducting part 21, one end of the conducting part 21 is connected with an external wire, and the other end of the conducting part can be used for abutting the connecting end of the movable contact 3; when the gear is adjusted, the connection end of the movable contact 3 is only required to be in butt joint with the conduction end of the fixed contact 2, so that the possibility of abrasion of the contact of the tapping switch during adjustment is reduced, and the service life of the tapping switch is prolonged.
The base 1 and the driving disc 4 are made of insulating materials, in the embodiment, the base 1 and the driving disc 4 are made of bakelite, the driving disc 4 made of bakelite has high mechanical strength and good insulativity, and the bakelite has high heat resistance and corrosion resistance, so that the service lives of the base 1 and the driving disc 4 are longer.
The driving disc 4 is coaxially fixed with a driving shaft 41, and the driving shaft 41 can drive the driving disc 4 to reciprocate around the axis of the driving disc, so that the driving end of the moving contact 3 is driven to move, and the sliding connection of the moving contact 3 and the base 1 is realized; the driving end of the moving contact 3 pulls the connecting end of the moving contact 3 to swing reciprocally, so that the connection position of the moving contact 3 and the fixed contact 2 is adjusted.
A plurality of arc-shaped track grooves 5 are formed in the driving disc 4 in a penetrating manner, the arc-shaped track grooves 5 and the fixed contacts 2 are arranged one to one, and three arc-shaped track grooves 5 are formed in the embodiment; the arc track groove 5 can be used for buckling the driving end of the moving contact 3, and the driving end of the moving contact 3 can slide back and forth along the extending direction of the arc track groove 5, so that the connection position of the moving contact 3 and the fixed contact 2 can be adjusted.
The arc-shaped track groove 5 comprises a first arc section 51 and a second arc section 52, a switching arc section 53 is communicated between the first arc section 51 and the second arc section 52, and the first arc section 51, the switching arc section 53 and the second arc section 52 are communicated in sequence; the axes of the first arc section 51 and the second arc section 52 are arranged in a collinear manner with the axis of the base 1, and the diameters of the first arc section 51 and the second arc section 52 are different, in this embodiment, the diameter of the first arc section 51 is larger than that of the second arc section 52.
In the embodiment, the two fixed contacts 2 in the same group are named as a first contact 22 and a second contact 23, and in an initial state, the connecting end of the moving contact 3 is arranged at one end of the first arc section 51 far away from the switching arc section 53, and the connecting end of the moving contact 3 is connected with the second contact 23; when the driving shaft 41 pulls the driving disc 4 to rotate anticlockwise, the driving end of the moving contact 3 slides to the switching arc section 53 along the first arc section 51; when the driving end of the moving contact 3 is transited into the second arc section 52 by the switching arc section 53, under the condition that the rotation center is unchanged, the driving end of the moving contact 3 is abutted with the inner wall of the switching arc section 53 so as to force the moving contact 3 to swing, the connecting end of the moving contact 3 is disconnected with the second contact 23, and the other connecting end of the moving contact 3 swings towards the connecting direction close to the first contact 22 by taking the driving end of the moving shaft head as the axis and is abutted with the first contact 22, so that the gear switching is realized.
The length of the first arc section 51 and the length of the second arc section 52 are both larger than the length of the switching arc section 53, and when the driving end of the moving contact 3 slides along the first arc section 51 (or the second arc section 52), the connecting end of the moving contact 3 can always keep a state of being connected with the second contact 23 (or the first contact 22), so that the gear of the moving contact 3 and the gear of the fixed contact 2 are reduced from being changed due to the shaking of the switch; meanwhile, the distance between the first arc section 51 and the second arc section 52 is longer, so that the first contact 22 or the second contact 23 can be in a closed state in a certain time period, namely, an intermittent switch state can be realized.
The side wall of the movable contact 3, which is close to one side of the driving disc 4, is vertically provided with a roller 31 which is matched with the arc-shaped track groove 5, the roller 31 is provided with a roller 32, the roller 31 is coaxially sleeved on the roller 32, and the roller 31 can circumferentially rotate by taking the axis of the roller 32 as the center; one end of the roller 32 is vertically fixed with the side surface of the movable contact 3, which is close to the driving disc 4, and the peripheral wall of the roller 31 is buckled into the arc-shaped track groove 5; when the movable contact 3 is in gear adjustment, the roller 31 can roll in the arc-shaped track groove 5, so that friction force between the roller and the arc-shaped track groove is reduced, and the movable contact 3 is smoother when in gear switching.
One end of the conducting part 21, which is close to the driving disc 4, is provided with a telescopic piece 6, one end of the telescopic piece 6 is fixedly connected with the conducting part 21, and the other end is provided with an abutting block 7; in the embodiment, the telescopic piece 6 and the abutting block 7 are made of conductive materials; when the connecting end of the moving contact 3 is switched between the first contact 22 and the second contact 23, the connecting end of the moving contact 3 is abutted against one end of the abutting block 7, which is far away from the telescopic piece 6, the telescopic piece 6 is deformed under the action of external force, so that the rigid contact between the connecting end of the moving contact 3 and the abutting block 7 can be reduced while the abutting block 7 is abutted against the connecting end of the moving contact 3, the possibility of abrasion generated by the contact of the tapping switch during adjustment is reduced, and the service life of the tapping switch is prolonged.
In the present embodiment, the expansion member 6 is provided as a spring, one end of which is fixedly connected to the conducting portion 21, and the other end of which is connected to the abutting block 7; in the embodiment, the spring is made of phosphor bronze material, and the phosphor bronze material is good in conductivity, high in elasticity, free of rust, easy to weld and convenient for working personnel to process the fixed contact 2.
The implementation principle of the guide rail type split contact in the embodiment of the utility model is as follows: in the initial state, the connecting end of the moving contact 3 is arranged at one end of the first arc section 51 far away from the switching arc section 53, and the connecting end of the moving contact 3 is connected with the second contact 23; the driving shaft 41 can drag the driving disc 4 to rotate anticlockwise, so that the roller 31 is driven to roll to the switching arc section 53 along the inner wall of the first arc section 51;
when the driving end of the moving contact 3 is transited into the second arc section 52 from the switching arc section 53, the diameter of the first arc section 51 is larger than that of the second arc section 52, so that the roller 31 is forced to abut against the inside of the switching arc section 53 when entering the second arc section 52 from the switching arc section 53, the moving contact 3 is forced to swing by taking the axis of the roller 32 as the center, the connecting end of the moving contact 3 is disconnected from the second contact 23, and the other connecting end of the moving contact 3 swings towards the connecting direction close to the first contact 22 and is connected with the first contact 22, so that the gear switching is realized;
when the abutting block 7 arranged on the first contact 22 abuts against the connecting end of the moving contact 3, the telescopic piece 6 deforms, so that the abutting block 7 abuts against the connecting end of the moving contact 3, meanwhile, the hard contact between the connecting end of the moving contact 3 and the abutting block 7 can be reduced, the possibility that the contact of the tapping switch is worn during adjustment is reduced, and the service life of the tapping switch is prolonged.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. A guide rail type split contact is characterized in that: the device comprises a base (1), wherein a plurality of groups of fixed contacts (2) are arranged on the base (1) in a surrounding manner, and a plurality of moving contacts (3) which are adapted to the fixed contacts (2) are arranged on the base (1) in a sliding manner; the movable contact (3) is provided with a driving end and a plurality of connecting ends, the plurality of fixed contacts (2) and the plurality of connecting ends of the movable contact (3) are arranged one by one, and the fixed contacts (2) are arranged on a movable path of the connecting ends of the movable contact (3); the device further comprises a driving disc (4), wherein the driving disc (4) and the base (1) are coaxially arranged, a plurality of arc-shaped track grooves (5) are formed in the driving disc (4), and the arc-shaped track grooves (5) and the moving contacts (3) are arranged one by one; the driving end of the moving contact (3) is buckled into the arc-shaped track groove (5), and when the driving end of the moving contact (3) slides along the extending direction of the arc-shaped track groove (5), the connecting end of the moving contact (3) is connected with the fixed contact (2) with different gears.
2. A rail-type split contact according to claim 1, wherein: each group of fixed contacts (2) is arranged in two, the number of connecting ends of the moving contacts (3) is two, the two connecting ends are symmetrically arranged at two ends of the moving contacts (3) in the length direction, and the connecting ends of the moving contacts (3) are arranged in one-to-one correspondence with the conducting ends of the fixed contacts (2); the connecting ends of the two moving contacts (3) rotate circumferentially by taking the driving ends of the moving contacts (3) as axes; the static contact (2) is provided with a conducting part (21), and the end wall of the conducting part (21) close to one end of the driving disc (4) can be abutted by the connecting end of the moving contact (3).
3. A rail-type split contact according to claim 1, wherein: the arc-shaped track groove (5) comprises a first arc section (51), a switching arc section (53) and a second arc section (52) which are sequentially communicated, the axes of the first arc section (51) and the second arc section (52) are arranged in a collinear manner with the axis of the base (1), and the diameters of the first arc section (51) and the second arc section (52) are different; the driving disc (4) is provided with a driving shaft (41), and the driving shaft (41) is used for adjusting the driving end of the moving contact (3) from a first arc section (51) to a second arc section (52) in a reciprocating manner.
4. A rail type split contact according to claim 3, wherein: the lengths of the first arc section (51) and the second arc section (52) are larger than the length of the switching arc section (53).
5. A rail type split contact according to claim 2, wherein: the utility model discloses a movable contact, including drive disc (4), switch-on portion (21), drive disc (4) one end that is close to is provided with telescoping member (6), one end of telescoping member (6) with switch-on portion (21) are connected, and the other end is provided with butt piece (7), butt piece (7) with telescoping member (6) all adopt electrically conductive material, butt piece (7) can supply the link butt of moving contact (3).
6. A rail type split contact according to claim 5, wherein: the telescopic piece (6) adopts a spring, one end of the spring is connected with the conducting part (21), the other end of the spring is connected with the abutting block (7), and the telescopic piece (6) is made of phosphor bronze.
7. A rail-type split contact according to claim 1, wherein: the movable contact (3) is close to the lateral wall of driving disk (4) one side be provided with be fit for gyro wheel (31) of arc track groove (5), gyro wheel (31) with the lateral wall rotation of movable contact (3) is connected, the outer fringe side butt of gyro wheel (31) in the inside wall of arc track groove (5).
8. A rail-type split contact according to claim 1, wherein: the base (1) and the driving disc (4) are made of insulating bakelite materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321555612.8U CN219892065U (en) | 2023-06-17 | 2023-06-17 | Guide rail type split contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321555612.8U CN219892065U (en) | 2023-06-17 | 2023-06-17 | Guide rail type split contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219892065U true CN219892065U (en) | 2023-10-24 |
Family
ID=88399212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321555612.8U Active CN219892065U (en) | 2023-06-17 | 2023-06-17 | Guide rail type split contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219892065U (en) |
-
2023
- 2023-06-17 CN CN202321555612.8U patent/CN219892065U/en active Active
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