Urban rail transit three-station integrated isolation grounding device

Abstract

The utility model discloses a three-station integrated isolation grounding device for urban rail transit, and belongs to the technical field of visual grounding devices. The device comprises an integrated isolation grounding switch QS, a controller KZQ and a switch control loop. The integrated isolation grounding switch QS is connected with the switch control loop, and the switch control loop is controlled by the controller KZQ; one end of the integrated isolation grounding switch QS is connected with the in-garage contact net, and a motor electrified disconnecting link of the integrated isolation grounding switch QS is arranged between the out-garage contact net and the walking rail. According to the utility model, the grounding switch and the networking isolation switch are combined into two positions and one position, the condition that the grounding switch and the grounding switch are simultaneously closed is eliminated from a mechanical structure, and the newly designed switches are arranged in the same switch cabinet, so that the operation process is simplified, the installation space is reduced, and the phenomenon that the networking isolation switch and the grounding switch are mistakenly closed is thoroughly prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of visual grounding device, concretely relates to a city rail transit three-station integrated isolation grounding device. BACKGROUND

[0002] City rail transit is one of the most important parts of city traffic construction and one of the most effective ways to solve city congestion. As of the end of 2019, a total of 40 cities in China opened rail transit and put into operation, with a total operating mileage of 6730 kilometers. With the rapid increase of urban population, city rail transit tends to be an early departure and late arrival mode, which leaves less and less time for line and equipment maintenance. How to safely, reliably and conveniently complete vehicle maintenance in a limited time is a problem that metro operation departments need to solve urgently.

[0003] At present, the maintenance operation of many metro depots (parking lots) still stays in the traditional maintenance mode: first disconnect the manual isolation switch of the maintenance track, and then manually check the electricity. If the line has residual charge, the residual charge needs to be slowly discharged using a voltage tester, and after the discharge is completed, it is verified that there is no electricity before the ground wire can be connected. The entire power-off process takes about half an hour, and the tedious power-off process is time-consuming and labor-intensive.

[0004] In recent years, some metro depots have introduced a visual grounding device. The device can automatically complete voltage testing, discharging and grounding, and can remotely view the video image of the grounding knife switch, basically realizing the automation of grounding operation. However, since the grounding device and the online isolation switch belong to two different devices and are installed far apart, the operation of the online isolation switch still needs to be manually operated on site, which is time-consuming. Some manufacturers have added an operation terminal next to the grounding device to operate the electric isolation switch and the grounding device, realizing centralized operation of single-track isolation switches and grounding devices. However, since multiple devices need to be installed, the system is very complex and occupies a lot of space in the depot yard.

[0005] In summary, the existing online power supply and grounding equipment of metro depots still has the following shortcomings:

[0006] 1) The grounding device and the online isolation switch in the depot yard belong to different devices, and need to be operated simultaneously when power is on and off, which requires a specific operation process and consumes a lot of time.

[0007] 2) The grounding device and the online isolation switch in the depot yard belong to different devices and are installed separately, which requires a lot of installation space.

[0008] 3) The vehicle depot network isolation switch is generally a manual isolation switch, and the network isolation switch can better lock the grounding device closing operation by using the internal contact position, but the grounding device cannot reliably lock the network isolation switch closing operation, and there is a risk of closing the network isolation switch under the grounding device closing state. Utility model content

[0009] The utility model discloses to the above -mentioned insufficient in prior art, provide a kind of urban rail transit three-position integrated isolation grounding device, to solve the problem proposed above.

[0010] To achieve the above object, the utility model takes the technical scheme that:

[0011] A kind of urban rail transit three-position integrated isolation grounding device, it includes integrated isolation grounding switch QS, controller KZQ and switch control loop;The integrated isolation grounding switch QS is connected with switch control loop, and the switch control loop is controlled by controller KZQ;

[0012] One end of the integrated isolation grounding switch QS is connected with the in-store catenary, and the motor live blade switch of integrated isolation grounding switch QS is arranged between the out-of-store catenary and the running rail;DC voltage transmitter TV1 is arranged between the out-of-store catenary and the running rail;DC voltage transmitter TV2, DC voltage transmitter TV3 and residual voltage discharge device ZFD are connected in parallel between the in-store catenary and the running rail;DC circuit transmitter TA is installed on the in-store catenary.

[0013] Further, the controller KZQ is connected with the DC voltage transmitter TV1, DC voltage transmitter TV2, DC voltage transmitter TV3, DC circuit transmitter TA, touch display TPC and loudspeaker respectively.

[0014] Further, the switch control loop includes isolation switch opening control loop, isolation switch closing control loop, grounding switch opening control loop and grounding switch closing control loop;The motor live blade switch of integrated isolation grounding switch QS is driven to move by the isolation switch opening control loop, isolation switch closing control loop, grounding switch opening control loop and grounding switch closing control loop respectively.

[0015] Further, the isolation switch opening control loop includes isolation switch opening button SBF1, opening contactor KM2 and travel switch 2XK.

[0016] The port X2 of the isolator opening button SBF1 is connected with the contact 13-14 of the travel switch 2XK, the ports 23-24 of the isolator opening button SBF1 are respectively connected with the port 8 of the switch SA1 and the pin YK11 of the controller KZQ; the contact 13 of the opening contactor KM2 is connected with DC24V+, the contact 14 of the opening contactor KM2 is connected with the contact 21-22 of the opening contactor KM1, the coil of the opening contactor KM2, the contact 56-55 of the opening contactor KM2 and the contact 11-12 of the travel switch 2XK in sequence;

[0017] The YK4A-YK4B of the controller KZQ is respectively connected with the port 9-10 of the switch SA1 and the contact 21-22 of the opening contactor KM1 at both ends of the remote control outlet.

[0018] Further, the isolator closing control circuit comprises an isolator closing button SBH1, an opening contactor KM1 and a travel switch 1XK;

[0019] The port X2 of the isolator closing button SBH1 is connected with the contact 13-14 of the travel switch 1XK, the ports 23-24 of the isolator closing button SBH1 are respectively connected with the port 8 of the switch SA1 and the pin YK10 of the controller KZQ; the contact 13 of the opening contactor KM1 is connected with DC24V+, the contact 14 of the opening contactor KM1 is connected with the contact 21-22 of the opening contactor KM2, the coil of the opening contactor KM1, the contact 56-55 of the opening contactor KM1 and the contact 11-12 of the travel switch 1XK in sequence;

[0020] The YK3A-YK3B of the controller KZQ is respectively connected with the port 9-10 of the switch SA1 and the contact 21-22 of the opening contactor KM1 at both ends of the remote control outlet.

[0021] Further, the grounding switch opening control circuit comprises a grounding switch opening button SBF2, an opening contactor KM4 and a travel switch 2XK;

[0022] The port X2 of the grounding switch opening button SBF2 is connected with the contact 13-14 of the travel switch 1XK, the ports 23-24 of the grounding switch opening button SBF2 are respectively connected with the port 8 of the switch SA1 and the pin YK9 of the controller KZQ; the contact 13 of the opening contactor KM4 is connected with the port 4 of the switch SA2, the contact 14 of the opening contactor KM4 is connected with the contact 21-22 of the opening contactor KM3, the coil of the opening contactor KM4, the contact 56-55 of the opening contactor KM4 and the contact 11-12 of the travel switch 2XK in sequence;

[0023] The YK2A-YK2B remote control outlet of the controller KZQ is connected with the port 3-4 of the change-over switch SA2 and the contact 21-22 of the tripping contactor KM3 respectively.

[0024] Further, the ground switch closing control circuit comprises a ground switch closing button SBH2, a tripping contactor KM3 and a travel switch 3XK.

[0025] The port X2 of the ground switch closing button SBH2 is connected with the contact 13-14 of the travel switch 3XK, the ports 23-24 of the ground switch closing button SBH2 are connected with the port 8 of the change-over switch SA1 and the pin YK8 of the controller KZQ respectively, the contact 13 of the tripping contactor KM3 is connected with the port 4 of the change-over switch SA2, and the contact 14 of the tripping contactor KM3 is connected with the contact 21-22 of the tripping contactor KM4, the coil of the tripping contactor KM3, the contact 56-55 of the tripping contactor KM3 and the contact 11-12 of the travel switch 3XK in sequence.

[0026] The YK1A-YK1B remote control outlet of the controller KZQ is connected with the port 3-4 of the change-over switch SA2 and the contact 21-22 of the tripping contactor KM4 respectively.

[0027] Further, the pin YX1, the pin YX2, the pin YX3 and the pin YX4 of the controller KZQ are connected with the contact 23-24 of the travel switch 3XK, the contact 21-22 of the travel switch 3XK, the contact 23-24 of the travel switch 1XK and the contact 23-24 of the travel switch 2XK respectively.

[0028] The pin YX15 of the controller KZQ is connected with the ports 23-24 of the live button SBY, the pin YX16, the pin YX17 and the pin YX18 of the controller KZQ are connected with the ports 11-12, the ports 5-6 and the ports 1-2 of the change-over switch SA1 respectively, and the pin YX19 and the pin YX20 of the controller KZQ are connected with the ports 7-8 and the ports 1-2 of the change-over switch SA2 respectively.

[0029] The urban rail transit three-position integrated isolation grounding device has the following beneficial effects:

[0030] 1. The ground switch and the network isolation switch are combined in the utility model, the simultaneous closing of the ground switch and the network isolation switch is eliminated from the mechanical structure, the newly designed switch is arranged in the same switch cabinet, and the operation process is simplified, the installation space is reduced, and the phenomenon of mistakenly closing the ground switch and the network isolation switch is completely prevented.

[0031] 2. The utility model discloses a switch cabinet which combines the isolating switch and the grounding switch, and the switch has only three positions of the isolating switch closing position, the isolating position (the intermediate position) and the grounding switch closing position, and the positions do not interfere with each other, so that the situation of power transmission with ground wire can be effectively prevented.

[0032] 3. The utility model discloses a current transformer arranged in the catenary feeder loop in the warehouse, which can monitor the loop current in real time and effectively prevent the operation of the load switching isolating switch. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the main wiring diagram of the utility model city track traffic three position integration isolation grounding device.

[0034] Figure 2 It is the analog quantity and man-machine interface wiring diagram of the utility model city track traffic three position integration isolation grounding device.

[0035] Figure 3 It is the switch control loop of the utility model.

[0036] Figure 4 It is the motor loop of the utility model integrated isolation grounding switch QS.

[0037] Figure 5 It is the remote signal circuit one of the utility model.

[0038] Figure 6 It is the remote signal circuit two of the utility model.

[0039] Figure 7 It is the remote control circuit one of the utility model.

[0040] Figure 8 It is the remote control circuit two of the utility model.

[0041] Figure 9 It is the isolating switch opening operation control flow chart of the utility model.

[0042] Figure 10 It is the isolating switch closing operation control flow chart of the utility model.

[0043] Figure 11 It is the grounding switch closing operation control flow chart of the utility model.

[0044] Figure 12 It is the grounding switch opening operation control flow chart of the utility model.

[0045] Figure 13 It is the integrated isolation grounding switch QS in the isolating closing position diagram of the utility model.

[0046] Figure 14The integrated isolating grounding switch QS of this utility model is in the isolating position.

[0047] Figure 15 The integrated isolating grounding switch QS of this utility model is in the grounding position.

[0048] Figure 16 This is an external view of the integrated isolation grounding device for three working positions in urban rail transit according to this utility model.

[0049] Figure 17 The mechanical component of the integrated isolating grounding switch QS of this utility model Figure 1 .

[0050] Figure 18 The mechanical component of the integrated isolating grounding switch QS of this utility model Figure 2 .

[0051] Among them, 1. Grounding terminal; 2. Live knife switch; 3. External inlet terminal; 4. Internal feeder terminal; 5. Switching mechanism; 6. Limit switch 2XK; 7. Cam; 8. Drive shaft; 9. Limit switch 1XK; 10. Limit switch 3XK; 11. Reducer. Detailed Implementation

[0052] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0053] Example 1

[0054] This embodiment presents an integrated isolation and grounding device for three working positions in urban rail transit. The entire device is integrated into, for example, a... Figure 16 The switch cabinet shown includes an integrated isolating grounding switch QS, a controller KZQ, and a switch control circuit. The integrated isolating grounding switch QS is connected to and controlled by the switch control circuit, and the switch control circuit is connected to and controlled by the controller KZQ.

[0055] For details, please refer to Figure 1 In this embodiment, one end of the integrated isolating grounding switch QS is connected to the in-cabin contact network (in-cabin feeder end 4), and the motor-energized knife switch 2 of the integrated isolating grounding switch QS is located between the in-cabin contact network (out-of-cabin inlet end 3) and the traveling rail (grounding end 1).

[0056] refer to Figure 2, the DC voltage transmitter TV1 is arranged between the catenary outside the depot and the running rail, the DC voltage transmitter TV2, the DC voltage transmitter TV3 and the residual voltage discharge device ZFD are arranged in parallel between the catenary inside the depot and the running rail, and the DC circuit transmitter TA is installed on the catenary inside the depot. The controller KZQ is connected with the DC voltage transmitter TV1, the DC voltage transmitter TV2, the DC voltage transmitter TV3, the DC circuit transmitter TA, the touch display TPC and the loudspeaker respectively.

[0057] The working principle of the charged state and current detection of the device of the embodiment is as follows:

[0058] The DC voltage transmitter TV1, the DC voltage transmitter TV2 and the DC voltage transmitter TV3 transform the DC 0-2000V voltage signal into a 4-20mA current signal, which is sent to the controller KZQ for collection and calculation, and the measured value after calculation is displayed on the touch display TPC in real time. Meanwhile, the controller KZQ compares and judges the charged state of the catenary in real time according to the set threshold, and drives the isolated feeder end live indication lamp HRD1 and the isolated incoming line end live indication lamp HRD2 to display the charged state of the catenary in real time according to the comparison and judgment result.

[0059] The DC circuit transmitter TA transforms the DC 0-4000A current signal into a 4-20mA current signal, which is sent to the controller KZQ for collection and calculation, and the measured value after calculation is displayed on the touch display TPC in real time. Meanwhile, the controller KZQ judges the threshold to determine whether the catenary inside the depot is loaded.

[0060] As a preferred embodiment of the present embodiment, with reference to Figure 3 The switch control circuit is arranged in the switch mechanism 5, which includes the disconnecting switch opening control circuit, the disconnecting switch closing control circuit, the grounding switch opening control circuit and the grounding switch closing control circuit. The disconnecting switch opening control circuit, the disconnecting switch closing control circuit, the grounding switch opening control circuit and the grounding switch closing control circuit respectively drive the motor live knife switch 2 of the integrated isolation grounding switch QS to move.

[0061] Specifically, the disconnecting switch opening control circuit of the embodiment includes the disconnecting switch opening button SBF1, the opening contactor KM2 and the travel switch 2XK.

[0062] With reference to Figures 3 to 8the port X2 of the isolating switch opening button SBF1 is connected with the contact 13-14 of the travel switch 2XK, the ports 23-24 of the isolating switch opening button SBF1 are respectively connected with the port 8 of the conversion switch SA1 and the pin YK11 of the controller KZQ, the contact 13 of the opening contactor KM2 is connected with DC24V+, and the contact 14 of the opening contactor KM2 is connected with the contact 21-22 of the opening contactor KM1, the coil of the opening contactor KM2, the contact 56-55 of the opening contactor KM2 and the contact 11-12 of the travel switch 2XK in sequence;

[0063] the YK4A-YK4B remote control outlet of the controller KZQ is respectively connected with the port 9-10 of the conversion switch SA1 and the contact 21-22 of the opening contactor KM1.

[0064] Reference Figure 9 The working principle of the isolating switch opening control circuit of the embodiment is as follows:

[0065] When the position contact of the travel switch 1XK is in the closed state, the isolating switch closing button SBH1 is bright red, the isolating switch opening button SBF1 is bright green, the operation mode conversion switch SA1 is in the “local electric” position, the enabling mode conversion switch SA2 is in the “release” position, the isolating switch opening button SBF1 is pressed, the controller KZQ collects the button signal, and after logical operation, the YK4A-YK4B remote control outlet is closed, the isolating switch opening control circuit is connected, the opening contactor KM2 acts, the auxiliary contact 13-14 of KM2 is closed, the opening control process is maintained, the motor of the integrated isolating grounding switch QS is driven to move the live knife switch 2 to the integrated switch isolation opening position, until the integrated isolating grounding switch QS moves to the position, and through the mechanical cam 7 structure, the contact 11-12 of the isolating switch travel switch 2XK is opened, the isolating switch opening control circuit is disconnected, and the isolating opening operation of the integrated isolating grounding device is ended.

[0066] Reference Figures 3 to 8 The isolating switch opening control circuit of the embodiment includes the isolating switch opening button SBF1, the opening contactor KM1 and the travel switch 1XK.

[0067] The port X2 of the isolating switch opening button SBF1 is connected with the contact 13-14 of the travel switch 1XK, the ports 23-24 of the isolating switch opening button SBF1 are respectively connected with the port 8 of the conversion switch SA1 and the pin YK11 of the controller KZQ, the contact 13 of the opening contactor KM2 is connected with DC24V+, and the contact 14 of the opening contactor KM2 is connected with the contact 21-22 of the opening contactor KM1, the coil of the opening contactor KM2, the contact 56-55 of the opening contactor KM2 and the contact 11-12 of the travel switch 2XK in sequence;

[0068] The two ends of the YK3A-YK3B remote control outlet of the controller KZQ are connected with the port 9-10 of the change-over switch SA1 and the contact 21-22 of the opening contactor KM1 respectively.

[0069] Reference Figure 10 The working principle of the isolating switch closing control circuit for the isolating closing operation of the embodiment is as follows:

[0070] When the position contact of the travel switch 2XK is in the closed state, the isolating switch closing button SBH1 is bright green, the isolating switch opening button SBF1 is bright red, the operation mode change-over switch SA1 is in the "local electric" position, and the enabling mode change-over switch SA2 is in the "release" position, the isolating switch closing button SBH1 is pressed, the controller KZQ collects the button signal and detects the current of the DC circuit transmitter TA, and after logical operation, when the incoming line contact network is without load, the YK3A-YK3B remote control outlet is closed, the isolating switch closing control circuit is connected, the opening contactor KM1 acts, the auxiliary contact 13-14 of KM1 is closed, the opening control process is maintained, the motor of the integrated isolating grounding switch QS drives the live knife switch 2 to move to the integrated switch isolating closing position, until the integrated isolating grounding switch QS moves to the position, the contact 11-12 of the isolating switch travel switch 1XK is opened by the mechanical cam 7 structure, the isolating switch closing control circuit is disconnected, and the isolating closing operation of the integrated isolating grounding device is ended.

[0071] Reference Figures 3 to 8 The grounding switch opening control circuit of the embodiment includes the grounding switch opening button SBF2, the opening contactor KM4 and the travel switch 2XK.

[0072] The port X2 of the grounding switch opening button SBF2 is connected with the contact 13-14 of the travel switch 1XK, the ports 23-24 of the grounding switch opening button SBF2 are connected with the port 8 of the change-over switch SA1 and the pin YK9 of the controller KZQ respectively, the contact 13 of the opening contactor KM4 is connected with the port 4 of the change-over switch SA2, and the contact 14 of the opening contactor KM4 is connected with the contact 21-22 of the opening contactor KM3, the coil of the opening contactor KM4, the contact 56-55 of the opening contactor KM4 and the contact 11-12 of the travel switch 2XK in sequence.

[0073] The two ends of the YK2A-YK2B remote control outlet of the controller KZQ are connected with the port 3-4 of the change-over switch SA2 and the contact 21-22 of the opening contactor KM3 respectively.

[0074] Reference Figure 12 The working principle of the grounding switch opening control circuit for the grounding opening operation of the embodiment is as follows:

[0075] Determine the travel switch 2XK position contact in the closed state, ground switch button SBH2 bright red, ground switch button SBF2 bright green, operation mode conversion switch SA1 is in the "local electric" position, enable mode conversion switch SA2 is in the "release" position, press the ground switch button SBF2, the controller KZQ acquires the button signal, through logical operation, close YK2A-YK2B remote control outlet, connect the ground switch tripping control circuit, KM4 auxiliary contact 13-14 closed, keep the tripping control process, drive QS motor live knife switch 2 to the integrated switch isolation position movement, until the integrated isolation ground switch QS movement to the place, through the mechanical cam 7 structure, open the travel switch 2XK contact 11-12, disconnect the ground switch tripping control circuit, end the integrated isolation ground device ground tripping operation.

[0076] Reference Figures 3 to 8 The ground switch closing control circuit of the device of the embodiment comprises a ground switch closing button SBH2, a tripping contactor KM3 and a travel switch 3XK.

[0077] The port X2 of the ground switch closing button SBH2 is connected with the contact 13-14 of the travel switch 3XK, the ports 23-24 of the ground switch closing button SBH2 are respectively connected with the port 8 of the conversion switch SA1 and the pin YK8 of the controller KZQ; the contact 13 of the tripping contactor KM3 is connected with the port 4 of the conversion switch SA2, the contact 14 of the tripping contactor KM3 is connected with the contact 21-22 of the tripping contactor KM4, the coil of the tripping contactor KM3, the contact 56-55 of the tripping contactor KM3 and the contact 11-12 of the travel switch 3XK in sequence.

[0078] The two ends of the YK1A-YK1B remote control outlet of the controller KZQ are respectively connected with the ports 3-4 of the conversion switch SA2 and the contact 21-22 of the tripping contactor KM4.

[0079] Reference Figure 11 The working principle of the ground closing operation of the ground switch closing control circuit adopted by the device of the embodiment is as follows:

[0080] Determine the travel switch 3XK position contact in the closed state, ground switch button SBH2 bright green, ground switch button SBF2 bright red, operation mode conversion switch SA1 is in the "local electric" position, enable mode conversion switch SA2 is in the "release" position, press the ground switch button SBF2, the controller KZQ, real-time detection of the contact net voltage, compared with the set threshold value.

[0081] If the monitoring voltage is lower than the set threshold, the controller KZQ outputs a control signal through the YK14 outlet, drives the live button SBY to be green, indicates that the closing operation is allowed, and then presses the grounding switch closing button SBH2. The controller KZQ collects the button signal, performs logical operation, closes the YK1A-YK1B remote control outlet, turns on the grounding switch closing control circuit, and drives the motor of the integrated isolation grounding switch QS to move to the integrated grounding position. When the integrated isolation grounding switch QS moves to the position, the mechanical cam 7 structure opens the contacts 11-12 of the grounding switch travel switch 3XK, disconnects the grounding switch closing control circuit, and ends the grounding closing operation of the integrated isolation grounding device.

[0082] If the monitoring voltage is higher than the set threshold, the controller KZQ outputs a control signal through the YK8 outlet, and inputs the residual voltage discharge device ZFD to discharge the residual voltage of the contact net. After a specified time, if the monitoring voltage is lower than the set threshold, the grounding closing subsequent operation is started according to the above process. If the monitoring voltage is still higher than the set threshold after the residual voltage discharge, the above operation is directly ended, and the grounding closing operation is prohibited.

[0083] The connection of the controller KZQ with the travel switches and the buttons in the embodiment is as follows:

[0084] The pin YX1, the pin YX2, the pin YX3, and the pin YX4 of the controller KZQ are connected with the contacts 23-24 of the travel switch 3XK, the contacts 21-22 of the travel switch 3XK, the contacts 23-24 of the travel switch 1XK, and the contacts 23-24 of the travel switch 2XK respectively.

[0085] The pin YX15 of the controller KZQ is connected with the port 23-24 of the live button SBY, the pin YX16, the pin YX17, and the pin YX18 of the controller KZQ are connected with the ports 11-12, 5-6, and 1-2 of the switch SA1 respectively, and the pin YX19 and the pin YX20 of the controller KZQ are connected with the ports 7-8 and 1-2 of the switch SA2 respectively.

[0086] Referring to Figure 13 , Figure 14 and Figure 15 , the integrated isolation grounding switch QS in the embodiment moves to the isolation grounding position when connecting with the running rail.

[0087] Referring to Figure 17 and Figure 18In the mechanical movement of the integrated isolation grounding switch QS, when the integrated isolation grounding switch QS moves to the position, the corresponding travel switch is opened by the mechanical cam 7 structure, thereby realizing the disconnection of the corresponding control circuit. The specific structure of the cam 7 opening the travel switch is not limited in the embodiment, and the driving of the cam 7 can be driven by a motor or a transmission mechanism or be independently driven.

[0088] Based on this, the preferred structure of the cam 7 driving is given in the embodiment, as shown in Figure 17 and Figure 18 The cam 7 of the embodiment is installed on the driving shaft 8, which is connected with the output shaft of the speed reducer 11 through a shaft coupling. A connecting rod is installed on the driving shaft 8, and the other end of the connecting rod is connected with the live knife switch 2. The left position, the lower position and the right position of the cam 7 are respectively provided with a travel switch (including the travel switch 1XK 9, the travel switch 2XK 6 and the travel switch 3XK 10). In the specific operation, the speed reducer 11 (motor) rotates to operate, drives the connecting rod to move through the driving shaft 8, thereby realizing the movement of the live knife switch 2 to the isolation closing position, the isolation middle position and the grounding position. At the same time, the driving shaft 8 drives the cam 7 at the edge to move, thereby opening the corresponding travel switch and disconnecting the corresponding control circuit.

[0089] As a preferred embodiment of the embodiment, as shown in Figure 4 The motor of the embodiment is a speed reducer 11, which is controlled by a switch control circuit and specifically controlled by the opening contactors KM1, KM2 and KM3. The corresponding contact control is shown in the figure, so the specific control principle is not described again.

[0090] The corresponding state display of the device of the embodiment is as follows:

[0091] Touch display screen TPC: display the contact network voltage detection value, display each remote signaling state, display each parameter set value, etc.

[0092] HRD1: indicates the live state of the isolated feeder end, red for live and green for no live

[0093] HRD2: indicates the live state of the isolated incoming line end, red for live and green for no live

[0094] HRE: device alarm lamp

[0095] SBY: live button, voltage detection permission indicating lamp, green when there is no voltage for voltage detection, and the integrated device is allowed to ground the switch

[0096] HRP: audible and visual alarm lamp, which opens the high-voltage chamber when the integrated switch is live, and the audible and visual alarm flashes to alarm.

[0097] SBH1: display of the on position of the disconnector, red color when closing;

[0098] SBF1: display of the off position of the disconnector, green color when opening;

[0099] SBH2: display of the on position of the grounding switch, red color when closing;

[0100] SBF2: display of the off position of the grounding switch, green color when opening;

[0101] The main electrical component models of the embodiment are as follows:

[0102] Fuse device ZRD1 ZRD2: HY-ZRD01

[0103] DC voltage transmitter TV1 TV2 TV3: HY-SYB01A / 4

[0104] Residual voltage discharge device ZFD: HY-ZFD01

[0105] Integrated isolation grounding switch QS: JN-1.5

[0106] DC circuit transmitter TA: CHZ-3000Y1 / A1

[0107] Controller KZQ: HY-WCK02

[0108] Touch display screen TPC: DMT80600T080_18WT

[0109] Loudspeaker HAU: 3.6Ω, 3.5W

[0110] Travel switch XK: SK-IIB

[0111] DC contactor KM1 KM2 KM3 KM4: LC1-D09BDC+LADT2

[0112] Travel switch 1XK 2XK 3XK: SK-IIB

[0113] Switching switch SA1: LW39-16C-9GC-233X / 4

[0114] Switching switch SA2: LW39-16C-9OB-33X3P

[0115] Lamp button SBH1 SBH2: LA39-B2-10D / r23

[0116] Lamp button SBF1 SBF2; LA39-B2-10D / g23

[0117] Air switch QF1: iC65N-DC-2P C6A+SD

[0118] Intermediate relay YKB: NR2ELD-D220

[0119] Intermediate relay ZJ1: SR2HLD-D24

[0120] Indicator light HRD1 HRD2: AD16-22D / rg23

[0121] Indicator light HRE: AD16-22D / y23

[0122] Charged button SBY: LA39-B2-10D / g23

[0123] Indicator light HRP: AD16-22SM / r23

[0124] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, it should not be understood as limiting the protection scope of the patent. Various modifications and changes made by those skilled in the art within the scope described in the claims are still within the protection scope of the patent.

Claims

1. A three-position integrated isolation grounding device for urban rail transit, characterized in that: The integrated isolation grounding switch QS, the controller KZQ and the switch control circuit; the integrated isolation grounding switch QS is connected with the switch control circuit, and the switch control circuit is controlled by the controller KZQ; One end of the integrated isolation grounding switch QS is connected with the indoor contact network, and the motor live blade of the integrated isolation grounding switch QS is arranged between the outdoor contact network and the running rail; the DC voltage transmitter TV1 is arranged between the outdoor contact network and the running rail; the DC voltage transmitter TV2, the DC voltage transmitter TV3 and the residual voltage discharge device ZFD are arranged in parallel between the indoor contact network and the running rail; and the DC circuit transmitter TA is installed on the indoor contact network.

2. The urban rail transit three-position integrated isolation grounding device according to claim 1, characterized in that: The controller KZQ is connected with the DC voltage transmitter TV1, the DC voltage transmitter TV2, the DC voltage transmitter TV3, the DC circuit transmitter TA, the touch display TPC and the speaker.

3. The urban rail transit three-position integrated isolation grounding device according to claim 1, characterized in that: The switch control circuit comprises the isolation switch opening control circuit, the isolation switch closing control circuit, the grounding switch opening control circuit and the grounding switch closing control circuit; the isolation switch opening control circuit, the isolation switch closing control circuit, the grounding switch opening control circuit and the grounding switch closing control circuit drive the motor live blade of the integrated isolation grounding switch QS to move respectively.

4. The urban rail transit three-position integrated isolation grounding device according to claim 3, characterized in that: The isolation switch opening control circuit comprises the isolation switch opening button SBF1, the opening contactor KM2 and the travel switch 2XK; The port X2 of the isolation switch opening button SBF1 is connected with the contact 13-14 of the travel switch 2XK, the ports 23-24 of the isolation switch opening button SBF1 are connected with the port 8 of the change-over switch SA1 and the pin YK11 of the controller KZQ respectively; the contact 13 of the opening contactor KM2 is connected with DC24V+, the contact 14 of the opening contactor KM2 is connected with the contact 21-22 of the opening contactor KM1, the coil of the opening contactor KM2, the contact 56-55 of the opening contactor KM2 and the contact 11-12 of the travel switch 2XK in sequence; The YK4A-YK4B remote control outlet of the controller KZQ is connected with the port 9-10 of the change-over switch SA1 and the contact 21-22 of the opening contactor KM1 respectively.

5. The urban rail transit three-position integrated isolation grounding device according to claim 3, characterized in that: The isolation switch closing control circuit comprises the isolation switch closing button SBH1, the opening contactor KM1 and the travel switch 1XK; The port X2 of the isolation switch closing button SBH1 is connected with the contact 13-14 of the travel switch 1XK, the ports 23-24 of the isolation switch closing button SBH1 are connected with the port 8 of the change-over switch SA1 and the pin YK10 of the controller KZQ respectively; the contact 13 of the opening contactor KM1 is connected with DC24V+, the contact 14 of the opening contactor KM1 is connected with the contact 21-22 of the opening contactor KM2, the coil of the opening contactor KM1, the contact 56-55 of the opening contactor KM1 and the contact 11-12 of the travel switch 1XK in sequence; The YK3A-YK3B remote control outlet of the controller KZQ is connected with the port 9-10 of the change-over switch SA1 and the contact 21-22 of the tripping contactor KM1 respectively.

6. The urban rail transit three-position integrated isolation grounding device according to claim 3, characterized in that: The grounding switch tripping control circuit comprises a grounding switch tripping button SBF2, a tripping contactor KM4 and a travel switch 2XK. The port X2 of the grounding switch tripping button SBF2 is connected with the contact 13-14 of the travel switch 1XK, the port 23-24 of the grounding switch tripping button SBF2 is connected with the port 8 of the change-over switch SA1 and the pin YK9 of the controller KZQ respectively; the contact 13 of the tripping contactor KM4 is connected with the port 4 of the change-over switch SA2, the contact 14 of the tripping contactor KM4 is connected with the contact 21-22 of the tripping contactor KM3, the coil of the tripping contactor KM4, the contact 56-55 of the tripping contactor KM4 and the contact 11-12 of the travel switch 2XK in turn. The YK2A-YK2B remote control outlet of the controller KZQ is connected with the port 3-4 of the change-over switch SA2 and the contact 21-22 of the tripping contactor KM3 respectively.

7. The urban rail transit three-position integrated isolation grounding device according to claim 3, characterized in that: The grounding switch closing control circuit comprises a grounding switch closing button SBH2, a tripping contactor KM3 and a travel switch 3XK. The port X2 of the grounding switch closing button SBH2 is connected with the contact 13-14 of the travel switch 3XK, the port 23-24 of the grounding switch closing button SBH2 is connected with the port 8 of the change-over switch SA1 and the pin YK8 of the controller KZQ respectively; the contact 13 of the tripping contactor KM3 is connected with the port 4 of the change-over switch SA2, the contact 14 of the tripping contactor KM3 is connected with the contact 21-22 of the tripping contactor KM4, the coil of the tripping contactor KM3, the contact 56-55 of the tripping contactor KM3 and the contact 11-12 of the travel switch 3XK in turn. The YK1A-YK1B remote control outlet of the controller KZQ is connected with the port 3-4 of the change-over switch SA2 and the contact 21-22 of the tripping contactor KM4 respectively.

8. The urban rail transit three-position integrated isolation grounding device according to claim 3, characterized in that: The pin YX1, the pin YX2, the pin YX3 and the pin YX4 of the controller KZQ are connected with the contact 23-24 of the travel switch 3XK, the contact 21-22 of the travel switch 3XK, the contact 23-24 of the travel switch 1XK and the contact 23-24 of the travel switch 2XK respectively. The pin YX15 of the controller KZQ is connected with the port 23-24 of the live button SBY; the pin YX16, the pin YX17 and the pin YX18 of the controller KZQ are connected with the port 11-12, the port 5-6 and the port 1-2 of the change-over switch SA1 respectively; the pin YX19 and the pin YX20 of the controller KZQ are connected with the port 7-8 and the port 1-2 of the change-over switch SA2 respectively.

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