CN214123294U - Indoor interlocking circuit simulation test dish - Google Patents

Indoor interlocking circuit simulation test dish Download PDF

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Publication number
CN214123294U
CN214123294U CN202023101615.3U CN202023101615U CN214123294U CN 214123294 U CN214123294 U CN 214123294U CN 202023101615 U CN202023101615 U CN 202023101615U CN 214123294 U CN214123294 U CN 214123294U
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China
Prior art keywords
wire system
block
plug
relay
inserted block
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CN202023101615.3U
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Chinese (zh)
Inventor
马维国
宋乐文
何麒
张永龙
王永坤
张大鹏
马艳君
杨彦军
何天伟
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Electrification Engineering Co Ltd of China Railway 21st Bureau Group Co Ltd
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Electrification Engineering Co Ltd of China Railway 21st Bureau Group Co Ltd
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Abstract

The utility model discloses an indoor interlocking circuit analogue test dish belongs to railway signal engineering field, solves the unable used repeatedly's of current analogue test dish problem. The utility model discloses a bottom plate and a plurality of two-wire system inserted block, be equipped with a plurality of two-wire system on the bottom plate and insert the position, every two-wire system is inserted and is equipped with 2 two-wire system jacks on the position, 2 two-wire system jacks link to each other with the separated time dish respectively, every two-wire system inserted block back is equipped with two-wire system plug with two-wire system jack matched with, two-wire system inserted block includes blank inserted block, bulb inserted block, switch inserted block, the diode inserted block, and the resistance inserted block, install the bulb on the bulb inserted block, install the switch on the switch inserted block, install the diode on the diode inserted block, install resistance on the resistance inserted block. The utility model discloses a novel modular mode can be pegged graft each inserted block on the bottom plate analog display station field plane according to the station field form of difference at the scene, and it is convenient to peg graft, can accomplish fast, can disassemble, used repeatedly on the scene after the use.

Description

Indoor interlocking circuit simulation test dish
Technical Field
The utility model belongs to railway signal engineering field, concretely relates to indoor interlocking circuit analogue test dish.
Background
Railway signal engineering is the brain and neural network of a railway system, the stability of the operation of the brain and neural network affects the safety of the whole railway system, and the interlocking relationship of signals is the central importance of the brain and neural network. In the railway signal construction process, a simulation test panel is always used for carrying out auxiliary tests in the single test of the indoor interlocking circuit, electronic components such as bulbs (simulation signal lamps) and switches (simulation steel rails) are arranged on the simulation test panel according to the actual conditions of a station to simulate, the electronic components are connected with a distribution panel, the distribution panel is connected with a control circuit, and the control circuit is connected with a microcomputer interlocking system. The microcomputer interlocking software is used for collecting and driving the control circuit, and observing whether the real-time display state of the module on the simulation test panel is consistent with the equipment state displayed on the interlocking control display machine or not and whether the equipment state on the interlocking control display machine is synchronously changed or not after an operator operates the switch of the simulation panel, so that the aim of testing the indoor control circuit is fulfilled. Because the simulation conditions of each station are different, the simulation test disc cannot be reused, and can only be directly discarded after being used, thereby wasting resources.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an indoor interlocking circuit analogue test dish to solve the unable used repeatedly's of current analogue test dish problem.
The technical scheme of the utility model is that: an indoor interlocking circuit simulation test panel comprises a bottom plate and a plurality of two-wire system insertion blocks, wherein the bottom plate is provided with a plurality of two-wire system insertion positions, each two-wire system insertion position is provided with 2 two-wire system insertion holes, the 2 two-wire system insertion holes are respectively connected with a distribution panel, the back of each two-wire system insertion block is provided with a two-wire system plug matched with the two-wire system insertion holes, and each two-wire system insertion block comprises a blank insertion block, a bulb insertion block, a switch insertion block, a diode insertion block and a resistor insertion block; the bulb inserting block is provided with a bulb, and two ends of the bulb are respectively and electrically connected with the 2 two-wire plugs on the bulb inserting block; the switch plug block is provided with a switch, and two ends of the switch are respectively and electrically connected with the 2 two-wire plugs on the switch plug block; the diode is arranged on the diode insertion block, and two ends of the diode are respectively and electrically connected with the 2 two-wire plugs on the diode insertion block; the resistance is installed on the resistance inserted block, and the two ends of the resistance are respectively and electrically connected with the 2 two-wire plugs on the resistance inserted block.
As a further improvement of the utility model, the wire-separating device further comprises a six-wire-system inserting block, a six-wire-system inserting position is arranged on the bottom plate, 6 six-wire-system inserting holes are arranged on the six-wire-system inserting position and respectively comprise a first hole, a second hole, a third hole, a fourth hole, a fifth hole and a sixth hole, the first hole and the second hole are respectively connected with the wire-separating plate, the third hole and the fourth hole are respectively connected to the anode and the cathode of the direct-current power supply, the fifth hole is connected with the second hole, and the sixth hole is connected with the first hole; the back of the six-wire system plug block is provided with a six-wire system plug matched with the six-wire system jack, the six-wire system plug block is provided with a six-wire system toggle switch, and 6 ports of the six-wire system toggle switch are respectively electrically connected with 6 six-wire system plugs.
As the utility model discloses a further improvement, two-wire system inserted block still includes the electrodeless relay inserted block, installs the electrodeless relay on the electrodeless relay inserted block, and the electrodeless relay both ends are connected with 2 two-wire system plug electricity on the electrodeless relay inserted block respectively.
As the utility model discloses a further improvement, two-wire system inserted block still includes the utmost point relay inserted block, installs the utmost point relay on the utmost point relay inserted block, and utmost point relay both ends are connected with 2 two-wire system plug electricity on the utmost point relay inserted block respectively.
As a further improvement of the utility model, the device also comprises a single chip microcomputer, a display device and a voice broadcasting device, wherein the display device and the voice broadcasting device are respectively connected with the single chip microcomputer; every two-wire system inserts the position and inserts and still is equipped with 2 on the position with six-wire system and broadcasts the ware jack, 2 broadcast the ware jack and link to each other with the singlechip respectively, bulb inserted block, switch inserted block, diode inserted block, resistance inserted block, electrodeless relay inserted block, the polarization relay inserted block and six-wire system inserted block backs still are equipped with the broadcast ware plug with broadcasting the ware jack matched with, be connected with induction coil between 2 broadcast ware plugs of every inserted block, whether induction coil detectable module is in operating condition to transmit information to the singlechip.
As a further improvement of the utility model, the bulb adopts the LED color lamp, and the two ends of the bulb are connected in parallel with the capacitor. The capacitor is used for increasing the working current of the filament relay in the control circuit and ensuring the normal work of the relay.
As a further improvement of the present invention, the mounting direction of the diode includes a forward direction and a reverse direction.
As a further improvement of the utility model, the switch adopts a button switch.
As a further improvement of the utility model, the power of the resistor is not less than 200W.
As a further improvement of the utility model, the diode plug block is also provided with an indicator light which is connected with the diode in series; the resistor insert block is also provided with an indicator light which is connected with the resistor in series; the electrodeless relay plug block is also provided with an indicator light which is connected with the electrodeless relay in series; and an indicator light is also arranged on the insert block of the polarization relay and is connected with the polarization relay in series.
The utility model has the advantages that: the utility model discloses a novel modular mode can be in the scene according to the station field form of difference peg graft each inserted block come analog display station field plane on the bottom plate, and it is convenient to peg graft, can accomplish fast, can disassemble on the scene after the use, and used repeatedly stops extravagantly. The utility model discloses an inserted block is multiple in type, can satisfy all kinds of station simulation demands. After the circuits on the plug blocks are communicated, signals are transmitted to the single chip microcomputer, and the single chip microcomputer can control the voice broadcasting device to broadcast the working state of each plug block, so that manual broadcasting is omitted, the broadcasting is accurate, and false alarm and missing alarm are avoided; meanwhile, the working state of each insert block can be displayed through a display device, so that the observation is facilitated. The utility model has beautiful and elegant appearance and meets the requirement of sense organ.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural diagram of the middle bottom plate of the present invention;
FIG. 3 is a schematic view of the back structure of the blank insert of the present invention;
FIG. 4 is a schematic front view of the blank insert of the present invention;
FIG. 5 is a schematic view of the back of the bulb insert of the present invention;
FIG. 6 is a schematic front view of the bulb insert of the present invention;
FIG. 7 is a circuit diagram of the bulb insert of the present invention;
fig. 8 is a schematic front structural view of the switch insert of the present invention;
fig. 9 is a schematic front view of the diode plug of the present invention;
fig. 10 is a schematic front view of the diode plug of the present invention;
fig. 11 is a circuit diagram of a diode plug of the present invention;
fig. 12 is a schematic front view of the resistor insert of the present invention;
fig. 13 is a schematic front structural view of the electrodeless relay plug of the present invention;
fig. 14 is a schematic front structural view of the relay plug of the present invention;
fig. 15 is a schematic back structural view of a six-wire insertion block according to the present invention;
fig. 16 is a schematic front view of a six-wire insertion block according to the present invention;
fig. 17 is a use state diagram of the present invention.
In the figure: 1-hole number one; 2-hole number two; 3-third hole; 4-four holes; 5-five holes; 6-six holes; 7-a distribution board; 8-bulb; 9-a switch; 10-a diode; 11-a single chip microcomputer; 12-broadcaster jack; 13-a broadcaster plug; 14-a base plate; 15-two-wire system plug block; 16-two-wire system insertion; 17-two-wire system jack; 18-two wire system plug; 19-blank insertion; 20-capacitance; 21-a bulb insert; 22-switch plug-in block; 23-a diode plug; 24-a resistor insert; 25-six-wire system insertion position; 26-voice broadcast means; 27-six-wire system plug block; 28-six wire system plug; 29-six wire system toggle switch; 30-a control circuit; 31-microcomputer interlock system; 32-resistance; 33-an indicator light; 34-a non-polar relay plug block; 35-electrodeless relay; 36-bias relay plug; 37-bias relay; 38-display device.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-16, an indoor interlocking circuit simulation test panel comprises a bottom plate 14 and a plurality of two-wire system plug blocks 15, wherein the bottom plate 14 is provided with a plurality of two-wire system plug positions 16, each two-wire system plug position 16 is provided with 2 two-wire system jacks 17, the 2 two-wire system jacks 17 are respectively connected with a distribution panel 7 through wires, the back of each two-wire system plug block 15 is provided with a two-wire system plug 18 matched with the two-wire system jacks 17, the two-wire system plug blocks 15 can be plugged on the two-wire system plug positions 16 through the mutual matching of the two-wire system plug 18 and the two-wire system jacks 17, and each two-wire system plug block 15 comprises a blank plug block 19, a bulb plug block 21, a switch plug block 22, a diode plug block 23 and a resistance plug block 24; the front surface of the bulb insertion block 21 is provided with a bulb 8, and two ends of the bulb 8 are respectively and electrically connected with 2 two-wire plugs 18 on the bulb insertion block 21; the switch 9 is arranged on the front surface of the switch plug 22, and two ends of the switch 9 are respectively and electrically connected with the 2 two-wire plugs 18 on the switch plug 22; the diode 10 is arranged on the front surface of the diode plug 23, and two ends of the diode 10 are respectively and electrically connected with the 2 two-wire plugs 18 on the diode plug 23; the resistor 32 is installed on the front surface of the resistor plug 24, and two ends of the resistor 32 are respectively and electrically connected with the 2 two-wire plugs 18 on the resistor plug 24.
The device is characterized by further comprising a six-wire system plug block 27, wherein a six-wire system plug position 25 is further arranged on the bottom plate 14, 6 six-wire system plug holes are formed in the six-wire system plug position 25 and respectively comprise a first hole 1, a second hole 2, a third hole 3, a fourth hole 4, a fifth hole 5 and a sixth hole 6, the first hole 1 and the second hole 2 are respectively connected with the distributing panel 7 through wires, the third hole 3 and the fourth hole 4 are respectively connected to the anode and the cathode of a 24V direct-current power supply through wires, the fifth hole 5 is connected with the second hole 2 through wires, and the sixth hole 6 is connected with the first hole 1 through wires; the back of the six-wire system plug block 27 is provided with a six-wire system plug 28 matched with the six-wire system jack, the six-wire system plug block 27 can be inserted on the six-wire system plug position 25 through the mutual matching of the six-wire system plug 28 and the six-wire system jack, the six-wire system plug block 27 is provided with a six-wire system toggle switch 29, and 6 ports of the six-wire system toggle switch 29 are respectively electrically connected with 6 six-wire system plugs 28.
The two-wire system plug block 15 further comprises an electrodeless relay plug block 34, an electrodeless relay 35 is installed on the front face of the electrodeless relay plug block 34, and two ends of the electrodeless relay 35 are electrically connected with the 2 two-wire system plugs 18 on the electrodeless relay plug block 34 respectively.
The two-wire system plug block 15 further comprises a polarization relay plug block 36, a polarization relay 37 is installed on the front face of the polarization relay plug block 36, and two ends of the polarization relay 37 are electrically connected with the 2 two-wire system plugs 18 on the polarization relay plug block 36 respectively.
The intelligent voice broadcasting system also comprises a singlechip 11, a display device 38 and a voice broadcasting device 26, wherein the display device 38 and the voice broadcasting device 26 are respectively connected with the singlechip 11; each two-wire system plug position 16 and each six-wire system plug position 25 are also provided with 2 broadcaster jacks 12, the 2 broadcaster jacks 12 are respectively connected with the single chip microcomputer 11 through wires, the back sides of the bulb plug block 21, the switch plug block 22, the diode plug block 23, the resistance plug block 24, the electrodeless relay plug block 34, the polarization relay plug block 36 and the six-wire system plug block 27 are also provided with broadcaster plugs 13 matched with the broadcaster jacks 12, and the 2 broadcaster plugs 13 are electrically connected.
The bulb 8 adopts an LED color lamp, and two ends of the bulb 8 are connected in parallel with a capacitor 20.
The mounting direction of the diode 10 includes a forward direction (fig. 8) and a reverse direction (fig. 9).
The switch 9 is a push-button switch.
The power of the resistor 32 is not less than 200 watts.
The front surface of the diode plug 23 is also provided with an indicator light 33, the indicator light 33 is connected with the diode 10 in series, and the indicator light 33 is used for indicating the working state of the diode 10; the front surface of the resistor insertion block 24 is also provided with an indicator lamp 33, the indicator lamp 33 is connected with the resistor 32 in series, the indicator lamps 33 with two colors can be respectively arranged on the resistor insertion block 24, and the indicator lamps 33 with different colors are used for distinguishing different working states; the front surface of the electrodeless relay plug block 34 is also provided with an indicator lamp 33, the indicator lamp 33 is connected with an electrodeless relay 35 in series, the front surface of the polarized relay plug block 36 is also provided with the indicator lamp 33, the indicator lamp 33 is connected with a polarized relay 37 in series, and the indicator lamps 33 with different colors are arranged on the electrodeless relay plug block 34 and the polarized relay plug block 36, so that the distinction is convenient.
In fig. 1, to avoid the disorder of the lines, only the first row of insertion sites is taken as an example to show the line connection relationship between each jack and the distribution board 7, and the rest of insertion sites are the same, so that the illustration is omitted.
In fig. 2, to avoid the disorder of lines, only the first insertion site (six-wire insertion site 25) and the third insertion site (two-wire insertion site 16) in the first row are taken as an example to show the line connection status, and the line connection statuses of the other insertion sites are the same, so the illustration is omitted.
Fig. 5 shows a schematic view of the structure of the back surface of the bulb insertion block 21. The back structures of the switch plug 22, the diode plug 23, the resistance plug 24, the electrodeless relay plug 34 and the bias relay plug 36 are the same as those of the bulb plug 21, and refer to fig. 5.
Fig. 11 shows a circuit diagram of the diode plug 23. The circuit diagrams of the resistor insert 24, the electrodeless relay insert 34 and the bias relay 37 are similar to the diode insert 23 insert, as can be seen in fig. 11.
When the simulation device is used, the required plug blocks are selected and inserted on the bottom plate 14 according to the actual situation of a station yard, and the field situation is simulated. The plug positions are connected with a distributing board 7 through leads, the distributing board 7 is connected with a control circuit 30, and the control circuit 30 is connected with a microcomputer interlocking system 31. Except the blank insertion blocks 19, after the other insertion blocks are inserted into the corresponding insertion positions, the insertion blocks are communicated with the singlechip 11, and information can be transmitted to the singlechip 11. The real-time state of each plug-in block and the operation information of the push-button switch 9 and the six-wire system dial switch 29 by an operator are sent to the single chip microcomputer 11, the single chip microcomputer 11 carries out voice broadcast on the received information through the voice broadcast device 26 and displays the information through the display device 38, so that whether the real-time state of each plug-in block is consistent with the equipment state displayed on the microcomputer interlocking system 31 or not and whether each operation is changed synchronously with the equipment state on the microcomputer interlocking system 31 or not are conveniently checked
The bulb 8 is used for simulating a signal lamp, and in order to simulate the field situation, the bulb 8 is respectively red, green, yellow, blue and white. The switch 9 is switched on and off to simulate whether a train is driving on the rail, e.g. switch 9 on indicates that the track is free and no train is occupying the track, and switch 9 off indicates that the track is occupied and a train is on the track. The diode 10 is used for simulating the opening direction of the turnout, wherein the forward connection indicates that the turnout is in a locating state, and the reverse connection indicates that the turnout is in a reverse state. The resistor 32 on the resistor insert 24 is used to simulate switch machine rotation. The electrodeless relay plug block 34 and the bias relay plug block 36 are used for simulating the relay state of an adjacent station and are used for a test station connection circuit and a field connection circuit. The six-wire system toggle switch 29 is used for simulating the operable variability of the current direction of an adjacent station in a station-connected and field-connected circuit when the adjacent station sends direct current to the local station, and is used for driving the parallel circuit of the electrodeless relay and the polarization relay of the local station. The blank module 19 is inserted into the insertion position where the electronic component is not required to be arranged.
Fig. 17 shows the whole effect of the simulation test tray of the present invention, which is inserted on the bottom plate by each insert block when the present invention is used in a certain station.
Examples 1,
1000 blank insert blocks 19 are arranged on one set of simulation test disc; 450 bulb inserts 21 (80 red, 80 green, 90 yellow, 100 blue, 100 white); 200 push-button switch blocks 22; 200 diode plugs 23 (100 of which are connected in the positive direction and 100 are connected in the reverse direction); 100 resistor blocks 24 (50 each of the red indicator light 33 and the green indicator light 33); 50 electrodeless relay plugs 34 (with green indicator lights 33 installed); 50 polarization relay plug blocks 36 (provided with red indicator lamps 33); 20 six-wire insertion blocks 27.
The utility model discloses a various problems such as the simulation test dish simulation station field plane abstraction before, incomplete, can not used repeatedly, extravagant resource, circuit do not have the voice broadcast function, not enough vivid careful, the appearance is not pleasing to the eye when experimental have been solved to prefabricated various inserts.

Claims (10)

1. The utility model provides an indoor interlocking circuit analogue test dish which characterized in that: the two-wire system plug comprises a bottom plate (14) and a plurality of two-wire system plug blocks (15), wherein a plurality of two-wire system plug positions (16) are arranged on the bottom plate (14), each two-wire system plug position (16) is provided with 2 two-wire system jacks (17), the 2 two-wire system jacks (17) are respectively connected with a distribution board (7), a two-wire system plug (18) matched with the two-wire system jacks (17) is arranged on the back of each two-wire system plug block (15), and each two-wire system plug block (15) comprises a blank plug block (19), a bulb plug block (21), a switch plug block (22), a diode plug block (23) and a resistance plug block (24); the bulb inserting block (21) is provided with a bulb (8), and two ends of the bulb (8) are respectively and electrically connected with 2 two-wire plugs (18) on the bulb inserting block (21); the switch plug block (22) is provided with a switch (9), and two ends of the switch (9) are respectively and electrically connected with 2 two-wire plugs (18) on the switch plug block (22); the diode plug block (23) is provided with a diode (10), and two ends of the diode (10) are respectively and electrically connected with 2 two-wire plugs (18) on the diode plug block (23); the resistance plug block (24) is provided with a resistor (32), and two ends of the resistor (32) are respectively electrically connected with 2 two-wire plugs (18) on the resistance plug block (24).
2. The indoor interlocking circuit simulation test disc of claim 1, characterized in that: the wire distribution box is characterized by further comprising a six-wire system insertion block (27), wherein a six-wire system insertion position (25) is further arranged on the bottom plate (14), 6 six-wire system insertion holes are formed in the six-wire system insertion position (25) and respectively comprise a first hole (1), a second hole (2), a third hole (3), a fourth hole (4), a fifth hole (5) and a sixth hole (6), the first hole (1) and the second hole (2) are respectively connected with the wire distribution plate (7), the third hole (3) and the fourth hole (4) are respectively connected to the positive pole and the negative pole of a direct current power supply, the fifth hole (5) is connected with the second hole (2), and the sixth hole (6) is connected with the first hole (1); six system plugs (28) that cooperate with six system jacks are equipped with on six system plug block (27) back, install six system of wires on six system plug block (27) and dial switch (29), and 6 ports of six system of wires dial switch (29) are connected with 6 six system plugs (28) electricity respectively.
3. An indoor interlocking circuit simulation test disc according to claim 2, characterized in that: the two-wire system plug block (15) further comprises an electrodeless relay plug block (34), an electrodeless relay (35) is mounted on the electrodeless relay plug block (34), and two ends of the electrodeless relay (35) are electrically connected with the 2 two-wire system plugs (18) on the electrodeless relay plug block (34) respectively.
4. An indoor interlocking circuit simulation test disc according to claim 3, characterized in that: the two-wire system plug block (15) further comprises a polarization relay plug block (36), a polarization relay (37) is installed on the polarization relay plug block (36), and two ends of the polarization relay (37) are electrically connected with 2 two-wire system plugs (18) on the polarization relay plug block (36) respectively.
5. An indoor interlocking circuit simulation test disc according to claim 4, characterized in that: the intelligent voice broadcasting system is characterized by further comprising a single chip microcomputer (11), a display device (38) and a voice broadcasting device (26), wherein the display device (38) and the voice broadcasting device (26) are respectively connected with the single chip microcomputer (11); every two-wire system inserts position (16) and six-wire system and inserts position (25) and go up still to be equipped with 2 and report ware jack (12), and 2 report ware jack (12) link to each other with singlechip (11) respectively, bulb inserted block (21), switch inserted block (22), diode inserted block (23), resistance inserted block (24), electrodeless relay inserted block (34), polarizing relay inserted block (36) and six-wire system inserted block (27) backs still are equipped with and report ware jack (12) matched with and report ware plug (13), are connected with induction coil between 2 report ware plug (13).
6. An indoor interlocking circuit simulation test disc according to any one of claims 1 to 5, characterized in that: the bulb (8) adopts an LED color lamp, and two ends of the bulb (8) are connected with a capacitor (20) in parallel.
7. An indoor interlocking circuit simulation test disc according to any one of claims 1 to 5, characterized in that: the mounting direction of the diode (10) includes a forward direction and a reverse direction.
8. An indoor interlocking circuit simulation test disc according to any one of claims 1 to 5, characterized in that: the switch (9) adopts a button type switch.
9. An indoor interlocking circuit simulation test disc according to any one of claims 1 to 3, characterized in that: the power of the resistor (32) is not less than 200 watts.
10. An indoor interlocking circuit simulation test disc according to claim 4 or 5, characterized in that: the diode plug block (23) is also provided with an indicator light (33), and the indicator light (33) is connected with the diode (10) in series; the resistor insertion block (24) is also provided with an indicator light (33), and the indicator light (33) is connected with the resistor (32) in series; an indicating lamp (33) is further mounted on the electrodeless relay plug block (34), and the indicating lamp (33) is connected with the electrodeless relay (35) in series; and an indicator light (33) is further mounted on the polarization relay plug block (36), and the indicator light (33) is connected with the polarization relay (37) in series.
CN202023101615.3U 2020-12-21 2020-12-21 Indoor interlocking circuit simulation test dish Active CN214123294U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023101615.3U CN214123294U (en) 2020-12-21 2020-12-21 Indoor interlocking circuit simulation test dish

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023101615.3U CN214123294U (en) 2020-12-21 2020-12-21 Indoor interlocking circuit simulation test dish

Publications (1)

Publication Number Publication Date
CN214123294U true CN214123294U (en) 2021-09-03

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ID=77513133

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Application Number Title Priority Date Filing Date
CN202023101615.3U Active CN214123294U (en) 2020-12-21 2020-12-21 Indoor interlocking circuit simulation test dish

Country Status (1)

Country Link
CN (1) CN214123294U (en)

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