CN2458208Y - Automatic changer for railway signal lamp filament - Google Patents
Automatic changer for railway signal lamp filament Download PDFInfo
- Publication number
- CN2458208Y CN2458208Y CN 00251295 CN00251295U CN2458208Y CN 2458208 Y CN2458208 Y CN 2458208Y CN 00251295 CN00251295 CN 00251295 CN 00251295 U CN00251295 U CN 00251295U CN 2458208 Y CN2458208 Y CN 2458208Y
- Authority
- CN
- China
- Prior art keywords
- relay
- filament
- railway signal
- auxiliary
- transformer
- 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.)
- Expired - Fee Related
Links
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The utility model relates to an automatic changer for switching main and auxiliary filaments of a railway signal lamp. The automatic changer comprises a shell, a mutual inductor and a relay which are arranged in the shell, wherein, the mutual inductor is connected to a main filament loop; the relay is an AC relay, and is connected in series with an auxiliary coil of the mutual inductor; a normally closed contact of the AC relay is connected to an auxiliary filament loop. The utility model has the advantages of simple circuit, few elements, no semiconductor device, favorable operating stability and shock resistance capability and high reliability.
Description
The utility model relates to a kind of automatic exchanger that switches the major and minor filament of railway signal lamp.
In order to make railway signal uninterrupted, railway signal lamp must and be provided with major and minor filament shifter with bifilar bulb.The mode that general filament automatic exchanger adopts DC relay control silicon control trigger electrode to switch.Owing to adopted more semiconductor devices in the circuit, poor heat stability, unreliable, reactance voltage, rush of current ability are also poor, do not meet the safety requirements of using in railway.Silicon control consumption pressure drop is bigger, influences filament brightness, and DC relay is also higher to the requirement of power supply stability, and impact resistance is not enough.
The utility model purpose is at the deficiencies in the prior art, designs the good railway signal filament automatic exchanger of a kind of stability and impact resistance.
The utility model comprises housing and transformer, relay located therein, and transformer is connected in the main filament loop, and relay is AC relay J
1, itself and transformer T
1Secondary coil series connection, this AC relay J
1A normally closed contact J
1-1 is connected in the auxiliary filament loop.
Circuit of the present utility model is simple, and element is few, does not adopt semiconductor devices, and the working stability and the impact resistance of device are fine, have improved reliability greatly.In order further to improve impact resistance, the utility model can also install the lightning protection circuit that pizo-resistance is formed additional.
Further illustrate the utility model below in conjunction with drawings and Examples.
Accompanying drawing is the use junction circuit figure of embodiment.
As shown in the figure, transformer T
1Be connected main filament R
1In the loop, AC relay J
1With transformer T
1Secondary coil series connection, normally closed contact J
1-1 is connected on auxiliary filament R
2In the loop.As main filament R
1When breaking, AC relay J
1Do not work normally closed contact J
1-1 closed auxiliary filament R that connects
2The loop is not interrupted signal.The power supply of railway signal lamp adopts AC relay to make circuit simple for exchanging 12 volts, and components and parts reduce.In order to make embodiment under big current conditions, prevent to be burnt during such as thunderbolt, between the power supply input/output terminal, connect pizo-resistance RV
1, their contact place is respectively by pizo-resistance RV
2And RV
3Ground connection.When the voltage on the pizo-resistance reaches certain value, will conducting, pizo-resistance can adopt voltage-sensitive ceramic in fact.At auxiliary filament R
2But serial mutual inductor T also in the loop
2, its secondary coil series connection AC relay J
2, this AC relay J
2The contact J of control
2-1, J
2-2 are connected on the external circuit, to show auxiliary filament R
2Mode of operation.Equally, AC relay J
1Contact J
1-2, J
1-3 also can be connected external main filament R
1In the circuit, show main filament R
1Mode of operation, can maintain easily like this.
Claims (3)
1, a kind of railway signal filament automatic exchanger comprises housing and transformer, relay located therein, and transformer is connected in the main filament loop, it is characterized by: relay is AC relay J
1, itself and transformer T
1Secondary coil series connection, this AC relay J
1A normally closed contact J
1-1 is connected in the auxiliary filament loop.
2, railway signal filament automatic exchanger according to claim 1 is characterized by: be connected with pizo-resistance RV between the power supply input/output terminal in main filament loop or auxiliary filament loop
1, this pizo-resistance RV
1Pass through pizo-resistance RV respectively with the contact of power supply input/output terminal
2And RV
3Ground connection.
3, railway signal filament automatic exchanger according to claim 1 and 2 is characterized by: also be in series with transformer T in the auxiliary filament loop
2, its secondary coil and AC relay J
2Series connection, this AC relay J
2The contact be connected with external circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00251295 CN2458208Y (en) | 2000-09-25 | 2000-09-25 | Automatic changer for railway signal lamp filament |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00251295 CN2458208Y (en) | 2000-09-25 | 2000-09-25 | Automatic changer for railway signal lamp filament |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2458208Y true CN2458208Y (en) | 2001-11-07 |
Family
ID=33609271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00251295 Expired - Fee Related CN2458208Y (en) | 2000-09-25 | 2000-09-25 | Automatic changer for railway signal lamp filament |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2458208Y (en) |
-
2000
- 2000-09-25 CN CN 00251295 patent/CN2458208Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |