CN111806515B - Arc damage prevention point switch contact set and method - Google Patents
Arc damage prevention point switch contact set and method Download PDFInfo
- Publication number
- CN111806515B CN111806515B CN201910293698.3A CN201910293698A CN111806515B CN 111806515 B CN111806515 B CN 111806515B CN 201910293698 A CN201910293698 A CN 201910293698A CN 111806515 B CN111806515 B CN 111806515B
- Authority
- CN
- China
- Prior art keywords
- contact
- movable contact
- ring
- group
- static 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
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000002265 prevention Effects 0.000 title abstract description 3
- 230000003068 static effect Effects 0.000 claims abstract description 110
- 230000003014 reinforcing effect Effects 0.000 claims description 28
- 238000002679 ablation Methods 0.000 claims description 12
- 238000010891 electric arc Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 2
- 230000007774 longterm Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/06—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The invention is suitable for a railway switch machine, belongs to rail transit switch switching equipment, and particularly relates to a switch machine contact set and a method for preventing arc damage, which are characterized in that: the movable contact group is arranged at the middle positions of the left static contact group and the right static contact group, and forms alternating dynamic electric contact with the left static contact group and the right static contact group through rotary swing. The arc damage prevention point switch contact set and the method can avoid the occurrence of poor contact faults caused by arc damage.
Description
Technical Field
The invention belongs to rail transit turnout switching equipment, in particular to a point switch contact set and a method for preventing arc damage, which are suitable for a railway turnout point switch.
Background
In the conventional contact set for a switch machine, during the process of rapidly breaking the action circuit of the switch machine, according to the action process of the contact set, the position of the movable contact ring, which finally breaks away from the static contact set, is positioned at the lowest point of the static contact sheet, and the contacts generate electric arcs. The movable contact ring 7 can randomly rotate in the action process, and the movable contact ring 7 can be burnt after long-term use of the electric arc, so that a circle of electric arc damage is formed. At the final contact position of the contact, the damage of the movable contact ring 7 also participates in the connection of the circuit, and the damage of the arc and the accessories generated at high temperature can cause the poor connection of the circuit, so that the system represents the circuit fault.
Disclosure of Invention
The invention aims to provide a point switch contact set and a method capable of preventing arc damage from occurring due to poor contact faults caused by arc damage.
The technical scheme of the invention is as follows: relates to a point switch contact set for preventing arc damage, which is characterized in that: the movable contact group is arranged at the middle positions of the left static contact group and the right static contact group, and forms alternating dynamic electric contact with the left static contact group and the right static contact group through rotary swing.
The static contact group comprises a static contact block, a static contact sheet, a reinforcing sheet, a wiring stud, a fastener and a static contact seat, wherein the wiring stud is fixed on the static contact seat, and a plurality of parallel static contact seats are fixed on the static contact block; two static contact sheets and two reinforcing sheets form a group of left and right elastic clamping electrodes, and one static contact sheet and one reinforcing sheet in the two static contact sheets and the two reinforcing sheets are overlapped together in a staggered manner to form a left elastic electrode or a right elastic electrode of the elastic clamping electrode sheet; the other static contact sheet and the other reinforcing sheet are laminated together to form a right elastic electrode sheet or a left elastic electrode of the elastic clamping electrode sheet.
The movable contact group comprises a movable contact block, a movable contact ring, a baffle ring and a contact column, the upper end of a central shaft of the movable contact block is fixedly provided with the contact column, the central shaft is coaxial with the contact column, the movable contact block is fixed on a rotary swinging mechanism, and the rotary swinging mechanism enables the contact column to swing left and right; the movable contact ring penetrates through a contact column of the movable contact block, and a baffle ring stop is arranged at the upper part of the movable contact ring; the wiring terminal is externally connected with a circuit, and the left and right elastic clamping electrode plates are dynamically connected with the movable contact ring; the opening size of the left and right elastic clamping electrode plates in the normal state is 12 mm.
The method of the point switch contact group for preventing arc damage at least comprises a left static contact group, a right static contact group and a movable contact group, wherein the movable contact group is arranged in the middle of the left static contact group and the right static contact group, the movable contact group forms alternating dynamic electric contact with the left static contact group and the right static contact group through rotary swing, the static contact group comprises a static contact block, a static contact sheet, a reinforcing sheet, a wiring stud, a fastener and a static contact seat, the wiring stud is fixed on the static contact seat, and a plurality of side-by-side static contact seats are fixed on the static contact block; two static contact sheets and two reinforcing sheets form a group of left and right elastic clamping electrodes, and one static contact sheet and one reinforcing sheet in the two static contact sheets and the two reinforcing sheets are overlapped together in a staggered manner to form a left elastic electrode or a right elastic electrode of the elastic clamping electrode sheet; the other static contact sheet and the other reinforcing sheet are laminated together to form a right elastic electrode sheet or a left elastic electrode of the elastic clamping electrode sheet, and the elastic clamping electrode sheet is fixed on the wiring stud through a fastener;
the movable contact group comprises a movable contact block, a movable contact ring, a baffle ring and a contact column, the upper end of a central shaft of the movable contact block is fixedly provided with the contact column, the central shaft is coaxial with the contact column, the movable contact block is fixed on a rotary swinging mechanism, and the rotary swinging mechanism enables the contact column to swing left and right; the movable contact ring penetrates through a contact column of the movable contact block, and a baffle ring stop is arranged at the upper part of the movable contact ring; the wiring terminal is externally connected with a circuit, and the left and right elastic clamping electrode plates are dynamically connected with the movable contact ring;
the movable contact group is at the initial position, a movable contact ring of the movable contact group is driven into the static contact piece to switch on a circuit of the left contact, and the movable contact ring is in line contact with the left and right elastic clamping electrode pieces;
the movable contact ring swings to the right, the movable contact ring breaks away from the left and right elastic clamping electrode plates, and a circuit of the left contact is disconnected; the electric arc is generated at the position of the last disengaging point of the movable contact ring and the left and right elastic clamping electrode plates, and the movable contact ring randomly rotates during the rotation and swing process of the follow-up contact assembly, so that the electric arc can form a circle of electric arc ablation at one position of the movable contact ring;
the movable contact ring continues to swing to the right side and turns to the middle position of the left static contact group and the right static contact group;
the movable contact ring continues to swing to the right side, and the movable contact ring starts to be connected with the static contact piece on the right side;
the movable contact ring swings to the position of the right static contact group, the movable contact group stops rotating, the movable contact ring reliably switches on the circuit of the right contact, and the movable contact ring is in a final switch-on position.
The invention has the advantages that: the head part of the static contact piece is extended downwards, the extension part is used as a contact point of the static contact piece when the circuit is disconnected, the power-off position on the movable contact piece 7 is moved downwards, the arc ablation position does not participate in the connection of the circuit at the final contact position of the contact, the fault of poor contact of the circuit is avoided, and the movable contact piece 7 is made of a material which resists arc ablation and has good conductivity.
The invention is further described below with reference to the drawings of the embodiments.
Drawings
FIG. 1 is a schematic view of a mounting structure of an embodiment of the present invention;
FIG. 2 is a schematic view showing the overall contact of the stationary contact and the movable contact ring according to an embodiment of the present invention;
FIG. 3 is a schematic view of an arc ablation location;
fig. 4, 5, 6, 7 and 8 are schematic views illustrating the operation process from the initial position of the left end to the end position of the right end according to the present invention.
In the figure: 1. a static contact block; 2. a stationary contact piece; 3. a reinforcing sheet; 4. a wiring stud; 5. a fastener; 6. a movable contact block; 7. a movable contact ring; 8. a baffle ring.
Detailed Description
As shown in fig. 1, 2 and 3, the present invention relates to a point switch contact set for preventing arc damage, which is characterized in that: the movable contact group is arranged at the middle positions of the left static contact group and the right static contact group, and forms alternating dynamic electric contact with the left static contact group and the right static contact group through rotary swing.
The static contact group comprises a static contact block 1, a static contact sheet 2, a reinforcing sheet 3, a wiring stud 4, a fastener 5 and a static contact seat, wherein the wiring stud 4 is fixed on the static contact seat, and a plurality of parallel static contact seats are fixed on the static contact block 1; the static contact sheet 2 and the reinforcing sheet 3 are fixed on the wiring stud 4 sequentially through a fastener 5; a group of left and right elastic clamping electrodes are formed by two static contact sheets 2 and two reinforcing sheets 3, and one static contact sheet 2 and one reinforcing sheet 3 in the two static contact sheets 2 and the two reinforcing sheets 3 are overlapped together in a staggered manner to form a left elastic electrode or a right elastic electrode of the elastic clamping electrode sheet; the other static contact sheet 2 and the other reinforcing sheet 3 are laminated together to form a right elastic electrode sheet or a left elastic electrode of the elastic clamping electrode sheet.
The movable contact group comprises a movable contact block 6, a movable contact ring 7, a baffle ring 8 and a contact column, the upper end of the central shaft of the movable contact block 6 is fixedly provided with the contact column, the central shaft is coaxial with the contact column, the contact block 6 is fixed on a rotary swinging mechanism, and the rotary swinging mechanism enables the contact column to swing left and right; the movable contact ring 7 penetrates through a contact column of the movable contact block 6, and a baffle ring 8 is arranged at the upper part of the movable contact ring 7 to stop; the wiring terminal is externally connected with a circuit, and the left and right elastic clamping electrode plates are dynamically connected with the movable contact ring 7; the opening size of the left and right elastic clamping electrode plates in the normal state is 12 mm.
The diameter of the movable contact ring 7 is 14mm; the movable contact ring 7 is dynamically spliced with the static contact piece 2, the static contact piece 2 is propped open, the elastic contact piece generates certain pressure to the contact ring, so that the static contact piece 2 and the contact ring are reliably contacted, the static contact piece 2 mainly plays a conductive function and provides certain contact pressure, and the reinforcing piece 3 mainly provides the precompression of the contact. The movable contact group rotates in the use process, a certain sweeping distance is provided in the contact and disconnection process of the movable contact ring 7 and the static contact piece 2, the circuit is switched on after the movable contact ring 7 enters the static contact piece 2, and the circuit is switched off after the movable contact ring 7 exits the static contact piece 2.
As shown in fig. 2, 3 and 4, the invention relates to a method for preventing arc damage of a point switch contact set, which at least comprises a left static contact set, a right static contact set and a movable contact set, wherein the movable contact set is arranged in the middle of the left static contact set and the right static contact set, the movable contact set forms alternate dynamic electric contact with the left static contact set and the right static contact set through rotary swing, the static contact set comprises a static contact block 1, a static contact sheet 2, a reinforcing sheet 3, a wiring stud 4, a fastener 5 and a static contact seat, the wiring stud 4 is fixed on the static contact seat, and a plurality of side-by-side static contact seats are fixed on the static contact block 1; a group of left and right elastic clamping electrodes are formed by two static contact sheets 2 and two reinforcing sheets 3, and one static contact sheet 2 and one reinforcing sheet 3 in the two static contact sheets 2 and the two reinforcing sheets 3 are overlapped together in a staggered manner to form a left elastic electrode or a right elastic electrode of the elastic clamping electrode sheet; the other static contact sheet 2 and the other reinforcing sheet 3 are laminated together to form a right elastic electrode or a left elastic electrode of an elastic clamping electrode sheet, and the elastic clamping electrode sheet is fixed on the wiring stud 4 through a fastener 5.
The movable contact group comprises a movable contact block 6, a movable contact ring 7, a baffle ring 8 and a contact column, the upper end of the central shaft of the movable contact block 6 is fixedly provided with the contact column, the central shaft is coaxial with the contact column, the movable contact block 6 is fixed on a rotary swinging mechanism, and the rotary swinging mechanism enables the contact column to swing left and right; the movable contact ring 7 penetrates through a contact column of the movable contact block 6, and a baffle ring 8 is arranged at the upper part of the movable contact ring 7 to stop; the wiring terminal is externally connected with a circuit, and the left and right elastic clamping electrode plates are dynamically connected with the movable contact ring 7;
as shown in fig. 4, in the initial position, the movable contact ring 7 is driven into the stationary contact piece 2 to switch on the circuit of the left contact, the movable contact ring is in line contact with the left and right elastic clamping electrode pieces, and as the movable contact ring 7 rotates randomly during the rotation and swing process of the follow-up contact assembly, the movable contact ring 7 may participate in the circuit switch-on in the C annular area shown in fig. 4.
As shown in fig. 5: the movable contact ring 7 swings to the right, the movable contact ring 7 breaks away from the left and right elastic clamping electrode plates, and a circuit of a left contact is disconnected; the electric arc is generated at the position of the last separation point B of the movable contact ring 7 and the static contact piece 2, and the movable contact ring 7 randomly rotates in the rotation and swing process of the follow-up contact assembly, so that the electric arc can form a circle of electric arc ablation at the point B of the movable contact ring 7, and the annular ablation at the point B is positioned below the annular region C.
As shown in fig. 6: the movable contact ring 7 continues to swing rightward and turns to the right contact.
As shown in fig. 7: the movable contact ring 7 starts to close the stationary contact piece 2 of the right contact.
As shown in fig. 8: the movable contact ring 7 swings to the end position, the movable contact group stops rotating, the movable contact ring 7 reliably completes the circuit of the right contact, and in the final closing position, the arc ablation position in the area B shown in fig. 3 does not participate in the circuit. The region C shown in fig. 3 participates in the circuit completion.
The invention moves down the arc ablation position of the movable contact ring, so that the arc ablation position does not participate in the final contact of the contact group, and the contact is prevented from being influenced by the arc ablation.
Claims (3)
1. The method for preventing arc damage of the contact group of the point switch comprises a left static contact group, a right static contact group and a movable contact group, wherein the movable contact group is arranged in the middle of the left static contact group and the right static contact group, the movable contact group forms alternating dynamic electric contact with the left static contact group and the right static contact group through rotary swing, the static contact group comprises a static contact block (1), a static contact sheet (2), a reinforcing sheet (3), a wiring stud (4), a fastener (5) and a static contact seat, the wiring stud (4) is fixed on the static contact seat, and a plurality of parallel static contact seats are fixed on the static contact block (1); two static contact sheets (2) and two reinforcing sheets (3) form a group of left and right elastic clamping electrodes, and one static contact sheet (2) and one reinforcing sheet (3) of the two static contact sheets (2) and the two reinforcing sheets (3) are overlapped in a staggered manner to form a left elastic electrode or a right elastic electrode of the elastic clamping electrode sheet; the other static contact sheet (2) and the other reinforcing sheet (3) are laminated together to form a right elastic electrode or a left elastic electrode of an elastic clamping electrode sheet, and the elastic clamping electrode sheet is fixed on the wiring stud (4) through a fastener (5);
the movable contact group comprises a movable contact block (6), a movable contact ring (7), a baffle ring (8) and a contact column, the upper end of a central shaft of the movable contact block (6) is fixedly provided with the contact column, the central shaft is coaxial with the contact column, the movable contact block (6) is fixed on a rotary swinging mechanism, and the rotary swinging mechanism enables the contact column to swing left and right; the movable contact ring (7) penetrates through a contact column of the movable contact block (6), and a baffle ring (8) is arranged at the upper part of the movable contact ring (7) to stop; a circuit is externally connected on the binding post, and the left and right elastic clamping electrode plates are dynamically connected with the movable contact ring (7);
the movable contact group is at an initial position, a movable contact ring (7) of the movable contact group is driven into the left and right elastic clamping electrode plates to switch on a circuit of the left contact, and the movable contact ring (7) is in line contact with the left and right elastic clamping electrode plates;
the movable contact ring (7) swings to the right, the movable contact ring (7) is disconnected from the left and right elastic clamping electrode plates, and a circuit of a left contact is disconnected; the electric arc is generated at the position of the last separation point B of the movable contact ring (7) and the static contact piece, and because the movable contact ring (7) randomly rotates in the rotation and swing process of the follow-up contact assembly, the electric arc forms a circle of electric arc ablation at the point B of the movable contact ring (7), and the annular ablation at the point B is positioned below the annular region C;
the movable contact ring (7) continues to swing to the right and turns to the middle position of the left static contact group and the right static contact group;
the movable contact ring (7) continues to swing to the right, and the movable contact ring (7) starts to be connected with the left and right elastic clamping electrode plates of the right contact;
the movable contact ring (7) swings to the position of the right static contact group, the movable contact group stops rotating, the movable contact ring (7) reliably switches on a circuit of the right contact, and the movable contact ring is in a final switch-on position;
the swing process of the movable contact group from the right side static contact group to the left side static contact group is the same as the above process, and the swing direction is opposite.
2. The method of claim 1, wherein the arc damage protection switch machine contact set is characterized by: the opening size of the left and right elastic clamping electrode plates in the normal state is 12 mm.
3. The method of claim 1, wherein the arc damage protection switch machine contact set is characterized by: the diameter of the movable contact ring (7) is 14mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293698.3A CN111806515B (en) | 2019-04-12 | 2019-04-12 | Arc damage prevention point switch contact set and method |
| PCT/CN2019/099476 WO2020206889A1 (en) | 2019-04-12 | 2019-08-06 | Railroad switch contact group capable of preventing arc damage, and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293698.3A CN111806515B (en) | 2019-04-12 | 2019-04-12 | Arc damage prevention point switch contact set and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111806515A CN111806515A (en) | 2020-10-23 |
| CN111806515B true CN111806515B (en) | 2024-02-27 |
Family
ID=72750930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910293698.3A Active CN111806515B (en) | 2019-04-12 | 2019-04-12 | Arc damage prevention point switch contact set and method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111806515B (en) |
| WO (1) | WO2020206889A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203211330U (en) * | 2013-04-23 | 2013-09-25 | 西安凯信铁路器材有限公司 | Electric switch machine breaker based on redundant connection points |
| CN105539510A (en) * | 2016-03-08 | 2016-05-04 | 天津铁科铁路信号有限公司 | Movable contact set and static contact set in railway switch machine |
| CN106184287A (en) * | 2016-08-04 | 2016-12-07 | 奉化市皓盛铁路电务器材有限公司 | A kind of reinforced contact group for railway switch machine |
| CN107878502A (en) * | 2017-11-13 | 2018-04-06 | 张辉 | Dynamic and static contact group and goat in goat |
| CN108394427A (en) * | 2018-04-19 | 2018-08-14 | 季志伟 | Electric point machine preventing arc constant pressure break group, movable contact group and sound contact group |
| CN208278076U (en) * | 2018-05-29 | 2018-12-25 | 西安中凯铁路电气有限责任公司 | A kind of sound contact group in goat |
| CN209921335U (en) * | 2019-04-12 | 2020-01-10 | 西安铁路信号有限责任公司 | Switch machine contact group capable of preventing arc damage |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4637298B2 (en) * | 2001-03-12 | 2011-02-23 | ナイルス株式会社 | switch |
| CN2868798Y (en) * | 2005-11-11 | 2007-02-14 | 林亚伟 | AC electric switch machine |
| CN101875360B (en) * | 2009-04-30 | 2015-04-29 | 西门子信号有限公司 | Stationary contact and components |
| CN202935373U (en) * | 2012-10-25 | 2013-05-15 | 天津市精达铁路器材有限公司 | Static contact component in railroad switch machine and with higher safety performance |
-
2019
- 2019-04-12 CN CN201910293698.3A patent/CN111806515B/en active Active
- 2019-08-06 WO PCT/CN2019/099476 patent/WO2020206889A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203211330U (en) * | 2013-04-23 | 2013-09-25 | 西安凯信铁路器材有限公司 | Electric switch machine breaker based on redundant connection points |
| CN105539510A (en) * | 2016-03-08 | 2016-05-04 | 天津铁科铁路信号有限公司 | Movable contact set and static contact set in railway switch machine |
| CN106184287A (en) * | 2016-08-04 | 2016-12-07 | 奉化市皓盛铁路电务器材有限公司 | A kind of reinforced contact group for railway switch machine |
| CN107878502A (en) * | 2017-11-13 | 2018-04-06 | 张辉 | Dynamic and static contact group and goat in goat |
| CN108394427A (en) * | 2018-04-19 | 2018-08-14 | 季志伟 | Electric point machine preventing arc constant pressure break group, movable contact group and sound contact group |
| CN208278076U (en) * | 2018-05-29 | 2018-12-25 | 西安中凯铁路电气有限责任公司 | A kind of sound contact group in goat |
| CN209921335U (en) * | 2019-04-12 | 2020-01-10 | 西安铁路信号有限责任公司 | Switch machine contact group capable of preventing arc damage |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020206889A1 (en) | 2020-10-15 |
| CN111806515A (en) | 2020-10-23 |
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