CN203414547U - Portable switch indication simulation box - Google Patents
Portable switch indication simulation box Download PDFInfo
- Publication number
- CN203414547U CN203414547U CN201320548346.6U CN201320548346U CN203414547U CN 203414547 U CN203414547 U CN 203414547U CN 201320548346 U CN201320548346 U CN 201320548346U CN 203414547 U CN203414547 U CN 203414547U
- Authority
- CN
- China
- Prior art keywords
- relay
- contact
- switch
- 2dqj
- pin
- 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
Images
Landscapes
- Keying Circuit Devices (AREA)
Abstract
A portable switch indication simulation box is disclosed. The structure of the portable switch indication simulation box comprises a circuit unit, a distributing board terminal, a switch indication transformer B, a normal indication relay DBJ, a reverse indication relay FBJ, a starting relay 1DQJ, a starting relay 2DQJ, a current-limiting resistor R, a capacitor C, a rectifier diode Z, a light emitting diode D, a self-locking button N, a switch machine starting positive power supply DZ 220, a switch machine starting negative power supply DF220, a switch machine indication positive power supply DJZ220, a switch machine indication negative power supply DJF220, a relay control positive power supply KZ, a relay control negative power supply KF, a relay control positive emergency power supply KZ-YJ, a relay control negative emergency power supply KF-YJ, a fixing control relay emergency power supply DC-YJ, a reverse control relay emergency power supply FC-YJ, a fixing control relay DBJ and a reverse control relay FBJ.
Description
technical field:
The utility model relates to a kind of railway simulation test equipment, particularly
a kind of portable switch indication simulation box.
background technology:
Rail in speed-rising reconstruction of existing railway line and electrification innovation are the important contents that China railways faces development at present, wherein signalling arrangement transformation is again heavy difficult point wherein, and interlock test occupies very important status in signal professional construction, therefore, improve high efficiency and the accuracy of work progress interlock test, shortening will be put the engineering time, both task of top priority of wired signal transformation engineering have been become, when switch indication simulation test in the past, we use single diode to be directly pressed on terminals on distributing board and to simulate conventionally, connect trouble, and while removing after test, often occur leaking and remove phenomenon, there is serious potential safety hazard.In operation line rebuilding construction, when track switch does not put in place or track switch is surely closed, in order to save the track blockade time, we often also adopt single diode to be pressed on noseplate and simulate, but while connecting, while dismounting is time-consuming, has equally potential safety hazard.Switch indication simulation mould has just overcome above shortcoming, not only can fast and easy be connected to noseplate in use, and can remove all simulated conditions test rear moment, more can after using, not have leakage dismounting phenomenon.Thereby saved the track blockade time, and overcome the potential safety hazard of leaking dismounting diode.
summary of the invention:
The purpose of this utility model is for for point machine indication circuit simulative debugging in Line of Existing Railway transformation and electrification project, produce " portable switch indication simulation box ", this simulation box can be simulated departures place switch indication, and can on simulation box display panel, demonstrate the expression of " location " " antiposition " of DC electric switch machine, can also when interlocking of signals is tested, break and represent test, can be quick after using, the complete simulation box of removing, after having overcome the single diode simulation of former use, there is the phenomenon of leaking dismounting and losing, this simulation box has been realized the l-G simulation test of interlocked control center to terminal switch indication circuit, for switch control circuit simulation test in Existing Railway Line construction provides complete test construction means, explore a kind of new rigorous efficient existing Business Line point machine indication circuit test method.
The purpose of this utility model realizes in the following manner: its structure comprises
switch indication circuit unit, terminals on distributing board,switch indication transformer B, normal indication relay DBJ, antiposition represents relay FBJ, 1 starting relay 1DQJ, 2 starting relay 2DQJ, current-limiting resistance R, capacitor C, commutation diode Z, light emitting diode D, self-locking button N, point machine starts positive supply DZ220, point machine starts negative supply DF220, point machine represents positive supply DJZ220, point machine represents negative supply DJF220, Control positive supply KZ, Control negative supply KF, the positive emergency power pack KZ-YJ of Control, Control is born emergency power pack KF-YJ, ixed control relay emergency power pack DC-YJ, antiposition is handled relay emergency power pack FC-YJ, ixed control relay DBJ, antiposition is handled relay FBJ, wherein:
switch indication circuit unit by resistance R 2, light emitting diode D1, D2, Self-locking button switch AN1, AN2 and commutation diode D3, D4, formed, 3 pin X3 of one termination terminals on distributing board of resistance R 2, the positive pole of the negative pole D2 of the other end and light emitting diode D1 also connects, the positive pole serial connection self-lock of button switch AN1 of light emitting diode D1 connects the negative pole of commutation diode D3, and the positive pole of commutation diode D3 meets 2 pin X2 of terminals on distributing board; The negative pole serial connection self-locking button switch AN2 of light emitting diode D2 connects the positive pole of commutation diode D4, and the negative pole of commutation diode D4 meets 1 pin X1 of terminals on distributing board;
Two-way point machine startup negative supply DF220 is connected in series respectively fuse RD1, RD2 and connects the normally closed of 2 starting relay 2DQJ1 and often open node, the fixed juncture of the contact switch 2DQJ-1 of 2 starting relay 2DQJ connects the normal opened contact of the contact switch 1DQJ-1 of 1 starting relay 1DQJ, and the fixed juncture of 1 starting relay 1DQJ contact switch 1DQJ-1 meets 4 pin X4 of goat terminals on distributing board;
Point machine represents that negative supply DJF220 meets switch indication transformer B and obtains 2 pin, the 1 pin serial connection fuse RD4 of switch indication transformer B connects point machine and represents positive supply DJZ220,4 pin of switch indication transformer B represent 2 pin of relay FBJ and connect with 1 pin of normal indication relay DBJ and antiposition, and the 3 pin series resistor R1 of switch indication transformer B meet 3 pin X3 of terminals on distributing board;
2 pin of normal indication relay DBJ connect the normally closed contact of 2 starting relay 2DQJ contact switch 2DQJ-2, antiposition represents that 1 pin of relay FBJ connects the normal opened contact of 2 starting relay 2DQJ contact switch 2DQJ-2, the fixed juncture of 2 starting relay 2DQJ contact switch 2DQJ-2 connects the normally closed contact of 1 starting relay 1DQJ contact switch 1DQJ-2, the normal opened contact of 1 starting relay 1DQJ contact switch 1DQJ-2 connects 2 pin of 2 starting relay 2DQJ, 1 starting relay 1DQJ contact switch 1DQJ-2 fixed contact connects the fixed contact of 2DQJ contact switch 2DQJ-3, the normal opened contact of 2DQJ contact switch 2DQJ-3 meets 2 pin X2 of terminals on distributing board, the normally closed contact of 2DQJ contact switch 2DQJ-3 meets 1 pin X1 of terminals on distributing board,
The 1 pin serial connection fuse RD3 of 2 starting relay 2DQJ connects point machine and starts positive supply DZ220, normally closed contact and the fixed contact of the 3 pin serial connection normal indication relay DBJ contact switch DBJ-1 of 2 starting relay 2DQJ, be connected in series again antiposition and represent that the normally opened contact of relay FBJ contact switch FBJ-1 and fixed contact succeed the negative emergency power pack KF-YJ of electrical equipment control, antiposition represents that the normally closed contact of relay FBJ contact switch FBJ-1 succeeds the negative emergency power pack KF-YJ of electrical equipment control, 4 pin of 2 starting relay 2DQJ connect the fixed contact of 2 starting relay 2DQJ contact switch 2DQJ-4, the normally opened contact of 2 starting relay 2DQJ contact switch 2DQJ-4 connects 1 pin of 1 starting relay 1DQJ and the fixed contact of normal indication relay DBJ contact switch DBJ-2, the normally closed contact of normal indication relay DBJ contact switch DBJ-2 meets ixed control relay emergency power pack DC-YJ, the normally opened contact of normal indication relay DBJ contact switch DBJ-2 is succeeded electrical equipment control negative supply KF, the normally closed contact of 2 starting relay 2DQJ contact switch 2DQJ-4 connects 3 pin of 1 starting relay 1DQJ and the fixed contact that antiposition represents relay FBJ contact switch FBJ-2, antiposition represents that the normally opened contact of relay FBJ contact switch FBJ-2 succeeds electrical equipment control negative supply KF, antiposition represents that the normally closed contact of relay FBJ contact switch FBJ-2 connects antiposition and handles relay emergency power pack FC-YJ, 2 pin of 1 starting relay 1DQJ connect the normally opened contact of 1 starting relay 1DQJ contact switch 1DQJ-3, the fixed contact of 1 starting relay 1DQJ contact switch 1DQJ-3 is succeeded electrical equipment control positive supply KZ, 4 pin of 1 starting relay 1DQJ connect the normally opened contact of 1 starting relay 1DQJ contact switch 1DQJ-4, the fixed contact of 1 starting relay 1DQJ contact switch 1DQJ-4 is succeeded the positive emergency power pack KZ-YJ of electrical equipment control.
The beneficial effects of the utility model are:
1, circuit is simple and reliable.The DC electric switch machine indication circuit of this device circuit figure reference standard designs, the work on the spot principle that meets electric point machine, its verification experimental verification is reliable for effect, can comprehensively simulate and demonstrate the expression of " location " " antiposition " of DC electric switch machine, can also when interlock test, break and represent test.Can be quick, complete after using remove simulation box, can reuse, reduced after the single diode simulation of former use and existed and leak the probability of removing, aspect security performance and materials saving, improving a lot;
2, simulation box is provided with on-off switch, can concentrate and cut off at any time arbitrary group of switch indication, and needn't when l-G simulation test, each track switch combination carry out respectively switch indication cut-out and recovery, increases work efficiency;
3, simulation box is provided with track switch and determines reverse indication lamp, when both wired blockade is tested, can allow operating personnel understand at any time the expression situation of track switch especially, to remind at any time operating personnel to check wiring situation, for interlock test is raced against time, simultaneously this simulation box is equipped with two kinds of connection terminals according to the junction box mode of connection (bolt, ten thousand can terminal connections), can select arbitrarily according to actual needs, easy to operate.
accompanying drawing explanation:
Fig. 1 is the circuit theory schematic diagram of portable switch indication simulation box;
Fig. 2 is the embodiment schematic diagram that portable switch indication simulation box is connected with signalling arrangement direct current point machine;
Fig. 3 is the panel construction schematic diagram of portable switch indication simulation box.
Embodiment:
Being described in further detail the portable switch indication simulation box of the utility model by reference to the accompanying drawings:
Portable switch indication simulation box principle forms according to the outdoor indication circuit of point machine, can efficiently and accurately simulate that point machine is fixed, antiposition information, possess and have safety, efficient navigability, and can when interlock test, break and represent to test.Can be quick, complete after using remove simulation box, do not exist and omit or Loss.Thereby realize the order ground of interlock test.
As shown in Figure 1, the composition of portable switch indication simulation box comprises portable switch indication simulation box circuit theory diagrams:
A part forms 1 group by 2 commutation diodes, 2 light emitting diodes, 2 self-locking band buttons
switch indication circuit unit, each indication circuit unit is drawn 3 external connections and is connected to male connector base, then by 30 groups
track switchindication circuit unit forms switch indication integrated simulation case;
Second portion is to connect each 30 of crocodile clips or contact pins by 3 outside lines of 30 of 3 attachment plugs, 3 meters * 30, cable, every group of cable other end track switch, and crocodile clip (contact pin) marks track switch simulation box simulation track switch label and X1, X2, X3.Portable switch indication simulation box can meet 30 groups and following station turnout while simulation test.First a station switch indication is sent and is exchanged 110V power source for switch indication by indoor track switch combination under normal circumstances, after outdoor point machine node checks, after rectifier rectification, feed back to indoor track switch combination DBJ, FBJ relay, complete goat switch indication.
Switch control circuit schematic diagram as shown in Figure 2, simulation box is pressed Fig. 1 and is made, first by indoor track switch combination, interchange AC220V track switch power supply is down to and is exchanged AC110 power source for switch indication through transformer, by noseplate, deliver to switch indication simulation box again, after simulation box rectifies, the inspection of expression node state, light-emitting diodes indication, feed back to indoor track switch combination DBJ, FBJ relay, complete outdoor point machine mock survey;
Concrete location current flows to as follows: first coil 4 pin by switch indication transformer B--DBJ coil 1--and DBJ coil 2 pin--2DQJ-2--1DQJ-2--terminals on distributing board X1--commutation diode D4--locking press button AN2--light emitting diode D2 current-limiting resistance R1, R2--terminals on distributing board X3--current-limiting resistance R2, R1--indication transformer B coil 3 pin, has simulated location;
Antiposition current direction is as follows: switch indication transformer coil 4--FBJ coil 2--FBJ coil 1--and 2DQJ-2--1DQJ-2--terminals on distributing board X2--commutation diode D3--self-locking button AN1--light emitting diode D1--current-limiting resistance R2, R1 terminals on distributing board X3--indication transformer coil 3, antiposition has been simulated;
Concrete manipulation is as follows:
The first step: first track switch combination is represented to power supply disconnects;
Second step: according to station turnout group number and noseplate connected mode, choice for use band crocodile clip or with the cable of contact pin type, finding out in order the 1st group of switch indication simulation connecting line, during for many group track switches, can in order and on simulation box, mark actual track switch number, while being convenient to test, search;
The 3rd step: connecting line is received on noseplate X1, X2, X3 terminal according to the wire size marking on line;
The 4th step: serve after power source for switch indication, should light switch location marking light when working properly;
The 5th step: interrupt in road and represent, in test, directly to press corresponding track switch button and just can disconnect, again press button and recover switch indication.
When exchanging acclerating road switch simulation test, by after above sequential operation, then envelope connects acclerating road switch noseplate 1,4,5 terminals and can use;
The scope of application
This simulation box is applicable to all kinds of newly-built lines of China railways, operation line, by it, be in both the blockade of field, wired station is constructed, outdoor track switch part puts in place or orders to close and locks, in the time of cannot providing switch indication, can utilize this product Fast simulation switch indication, carry out in advance interlocking of signals test, save full station blocking time, reduce the impact on train operation.
Technical standard
Portable switch indication simulation box main technical standards is from the parameter of switch indication circuit path, to carry out setting technique standard according to the effect that represents simulation box, for guaranteeing simulation box reliably working, do not burn electronic component, when track switch simulated experiment, track switch should be combined to action power isolating switch disconnects, for guaranteeing that connecting line is convenient, use, the purposes mark that operation panel is exported each connecting line shows that with four (six) line tabulations circuit terminal purposes is consistent.
The method for making of portable switch indication simulation box:
Main material and components and parts:
Portable switch indication simulation box ectosome adopts 500X350X150mm aluminium alloy box, and the main material and the components and parts that need comprise: circuit board, diode, light emitting diode, 1K resistance, self-locking band button, 3 plugs and base, 23*0.15 flame retardant type power lead, crocodile clip, contact pin, solder stick.Above original paper, according to shown in Fig. 1, combines installation.
Checkout
Portable switch indication simulation box complete with equipment connection before should carry out checkout, first use mechanical multimeter to connect line end measurement in the input of portable switch indication simulation box, X1 connects multimeter positive pole, X3 connects multimeter negative pole, multimeter shows infinitely great, X1 connects multimeter negative pole, X3 connects multimeter positive pole, and multimeter shows 1000 Europe.X2 connects multimeter negative pole, X3 connects multimeter positive pole, and multimeter shows infinitely great, and X2 connects multimeter positive pole, X3 connects multimeter negative pole, and multimeter shows 1000 Europe, and above test is errorless just can be by this behaviour of track switch combination access simulation box.
Claims (1)
1. a portable switch indication simulation box, it is characterized in that comprising: switch indication circuit unit, terminals on distributing board, switch indication transformer B, normal indication relay DBJ, antiposition represents relay FBJ, 1 starting relay 1DQJ, 2 starting relay 2DQJ, current-limiting resistance R, capacitor C, commutation diode Z, light emitting diode D, self-locking button N, point machine starts positive supply DZ220, point machine starts negative supply DF220, point machine represents positive supply DJZ220, point machine represents negative supply DJF220, Control positive supply KZ, Control negative supply KF, the positive emergency power pack KZ-YJ of Control, Control is born emergency power pack KF-YJ, ixed control relay emergency power pack DC-YJ, antiposition is handled relay emergency power pack FC-YJ, ixed control relay DCJ, antiposition is handled relay FCJ, wherein:
switch indication circuit unitby resistance R 2, light emitting diode D1, D2, Self-locking button switch AN1, AN2 and commutation diode D3, D4, formed, 3 pin X3 of one termination terminals on distributing board of resistance R 2, the positive pole of the negative pole D2 of the other end and light emitting diode D1 also connects, the positive pole serial connection self-lock of button switch AN1 of light emitting diode D1 connects the negative pole of commutation diode D3, and the positive pole of commutation diode D3 meets 2 pin X2 of terminals on distributing board; The negative pole serial connection self-locking button switch AN2 of light emitting diode D2 connects the positive pole of commutation diode D4, and the negative pole of commutation diode D4 meets 1 pin X1 of terminals on distributing board;
Two-way point machine startup negative supply DF220 is connected in series respectively fuse RD1, RD2 and connects the normally closed of 2 starting relay 2DQJ1 and often open node, the fixed juncture of the contact switch 2DQJ-1 of 2 starting relay 2DQJ connects the normal opened contact of the contact switch 1DQJ-1 of 1 starting relay 1DQJ, and the fixed juncture of 1 starting relay 1DQJ contact switch 1DQJ-1 meets 4 pin X4 of goat terminals on distributing board;
Point machine represents that negative supply DJF220 meets switch indication transformer B and obtains 2 pin, the 1 pin serial connection fuse RD4 of switch indication transformer B connects point machine and represents positive supply DJZ220,4 pin of switch indication transformer B represent 2 pin of relay FBJ and connect with 1 pin of normal indication relay DBJ and antiposition, and the 3 pin series resistor R1 of switch indication transformer B meet 3 pin X3 of terminals on distributing board;
2 pin of normal indication relay DBJ connect the normally closed contact of 2 starting relay 2DQJ contact switch 2DQJ-2, antiposition represents that 1 pin of relay FBJ connects the normal opened contact of 2 starting relay 2DQJ contact switch 2DQJ-2, the fixed juncture of 2 starting relay 2DQJ contact switch 2DQJ-2 connects the normally closed contact of 1 starting relay 1DQJ contact switch 1DQJ-2
the normal opened contact of 1 starting relay 1DQJ contact switch 1DQJ-2 connects 2 pin of 2 starting relay 2DQJ, and 1 starting relay 1DQJ contact switch 1DQJ-2 fixed contact connectsthe fixed contact of 2DQJ contact switch 2DQJ-3, the normal opened contact of 2DQJ contact switch 2DQJ-3 meets 2 pin X2 of terminals on distributing board, and the normally closed contact of 2DQJ contact switch 2DQJ-3 meets 1 pin X1 of terminals on distributing board;
1 pin of 2 starting relay 2DQJserial connection fuse RD3 connects point machine and starts positive supply DZ220, normally closed contact and the fixed contact of the 3 pin serial connection normal indication relay DBJ contact switch DBJ-1 of 2 starting relay 2DQJ, be connected in series again antiposition and represent that the normally opened contact of relay FBJ contact switch FBJ-1 and fixed contact succeed the negative emergency power pack KF-YJ of electrical equipment control, antiposition represents that the normally closed contact of relay FBJ contact switch FBJ-1 succeeds the negative emergency power pack KF-YJ of electrical equipment control, 4 pin of 2 starting relay 2DQJ connect the fixed contact of 2 starting relay 2DQJ contact switch 2DQJ-4, the normally opened contact of 2 starting relay 2DQJ contact switch 2DQJ-4 connects 1 pin of 1 starting relay 1DQJ and the fixed contact of normal indication relay DBJ contact switch DBJ-2, the normally closed contact of normal indication relay DBJ contact switch DBJ-2 meets ixed control relay emergency power pack DC-YJ, the normally opened contact of normal indication relay DBJ contact switch DBJ-2 is succeeded electrical equipment control negative supply KF, the normally closed contact of 2 starting relay 2DQJ contact switch 2DQJ-4 connects 3 pin of 1 starting relay 1DQJ and the fixed contact that antiposition represents relay FBJ contact switch FBJ-2, antiposition represents that the normally opened contact of relay FBJ contact switch FBJ-2 succeeds electrical equipment control negative supply KF, antiposition represents that the normally closed contact of relay FBJ contact switch FBJ-2 connects antiposition and handles relay emergency power pack FC-YJ, 2 pin of 1 starting relay 1DQJ connect the normally opened contact of 1 starting relay 1DQJ contact switch 1DQJ-3, the fixed contact of 1 starting relay 1DQJ contact switch 1DQJ-3 is succeeded electrical equipment control positive supply KZ, 4 pin of 1 starting relay 1DQJ connect the normally opened contact of 1 starting relay 1DQJ contact switch 1DQJ-4, the fixed contact of 1 starting relay 1DQJ contact switch 1DQJ-4 is succeeded the positive emergency power pack KZ-YJ of electrical equipment control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548346.6U CN203414547U (en) | 2013-09-05 | 2013-09-05 | Portable switch indication simulation box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548346.6U CN203414547U (en) | 2013-09-05 | 2013-09-05 | Portable switch indication simulation box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203414547U true CN203414547U (en) | 2014-01-29 |
Family
ID=49977429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320548346.6U Expired - Fee Related CN203414547U (en) | 2013-09-05 | 2013-09-05 | Portable switch indication simulation box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203414547U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464430A (en) * | 2014-12-12 | 2015-03-25 | 柳州铁道职业技术学院 | Portable switch control unit experimental box |
| CN107589319A (en) * | 2016-07-08 | 2018-01-16 | 中铁六局集团电务工程有限公司 | A kind of five-wire system point machine analogue means |
| CN108564837A (en) * | 2018-02-05 | 2018-09-21 | 柳州铁道职业技术学院 | A kind of exchange switch control circuit and its method of controlling operation thereof |
| CN108878219A (en) * | 2018-07-04 | 2018-11-23 | 珠海瑞景电子科技有限公司 | A kind of control circuit based on starting relay |
| CN113942541A (en) * | 2021-12-21 | 2022-01-18 | 中铁十四局集团电气化工程有限公司 | Portable turnout operation device and turnout operation method |
-
2013
- 2013-09-05 CN CN201320548346.6U patent/CN203414547U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464430A (en) * | 2014-12-12 | 2015-03-25 | 柳州铁道职业技术学院 | Portable switch control unit experimental box |
| CN107589319A (en) * | 2016-07-08 | 2018-01-16 | 中铁六局集团电务工程有限公司 | A kind of five-wire system point machine analogue means |
| CN108564837A (en) * | 2018-02-05 | 2018-09-21 | 柳州铁道职业技术学院 | A kind of exchange switch control circuit and its method of controlling operation thereof |
| CN108564837B (en) * | 2018-02-05 | 2023-07-28 | 柳州铁道职业技术学院 | Alternating current turnout control circuit and operation control method thereof |
| CN108878219A (en) * | 2018-07-04 | 2018-11-23 | 珠海瑞景电子科技有限公司 | A kind of control circuit based on starting relay |
| CN108878219B (en) * | 2018-07-04 | 2020-06-30 | 珠海瑞景电子科技有限公司 | Control circuit based on starting relay |
| CN113942541A (en) * | 2021-12-21 | 2022-01-18 | 中铁十四局集团电气化工程有限公司 | Portable turnout operation device and turnout operation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103576024B (en) | A kind of Portable switch indication simulation case | |
| CN203414547U (en) | Portable switch indication simulation box | |
| CN203249978U (en) | Secondary cable sorting apparatus | |
| CN103558562B (en) | A kind of power module proving installation and method | |
| CN203812022U (en) | Analog control panel for railway signal interlock test | |
| CN203535154U (en) | Device for detecting on-off of cable core | |
| CN205983758U (en) | Ground wire suggestion device | |
| CN204037592U (en) | Track switch control box is used in a kind of switch machine debugging | |
| CN203287707U (en) | Button-type switching device for multiple computer interlocking systems | |
| CN209389922U (en) | A kind of railway signal test multifunctional power supply device | |
| CN202856439U (en) | Signal machine lighting power supply fuse redundancy apparatus | |
| CN205450164U (en) | Pencil break -make detects frock | |
| CN204597632U (en) | A kind of link-down alarm device based on power network dispatching system | |
| CN106646213A (en) | Auxiliary plug board for circuit breaker test | |
| CN204441759U (en) | Relay-protection pressing plate insulating protective cover | |
| CN109698609B (en) | Multifunctional power supply device for railway signal test | |
| CN203800821U (en) | Power polarity protection circuit | |
| CN206947824U (en) | A kind of power equipment movement debugging dolly | |
| CN2054538U (en) | Fast-speed wire-checking unit | |
| CN207067298U (en) | A kind of testing tool of four cores power line | |
| CN202305748U (en) | Testing device for remote control motherboard of distribution automation terminal | |
| CN205157704U (en) | A circuit mistake proofing meets alarm device for electrical haulage system | |
| CN205067623U (en) | Intelligent substation movable voltage merging cells check gauge | |
| CN108091224A (en) | Suitable for the experiment plate and experimental method of track circuit equipment | |
| CN202797494U (en) | Recognizable three-core power line with indicating lamps |
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 |
Granted publication date: 20140129 Termination date: 20160905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |