Grounding device for rail transit

Abstract

The utility model discloses a grounding device for rail transit, which comprises a cabinet body and a control module, the cabinet body comprises a cabinet door, a first chamber and a second chamber, the cabinet door can open and close the first chamber and the second chamber, a high-voltage device is arranged in the first chamber, and a low-voltage device is arranged in the second chamber. The first cavity is provided with a visual isolation piece capable of sealing a cavity body of the first cavity, the isolation piece is located between the cabinet door and the cavity body of the first cavity, the control module is detachably arranged in the second cavity, and the control module is electrically connected with the high-voltage device and the low-voltage device. According to the technical scheme, the situation that wires are prone to fatigue due to cross-door wiring can be avoided, the influence of frequent door opening and closing on the using effect and the service life of cables can be avoided, the control module can be conveniently installed in the second cavity, the problem that the installation space needed by a traditional controller is large can be solved, and the service life of the controller is prolonged. The utilization rate of the internal space of the second cavity is improved, and the practicability and attractiveness of the grounding device are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit equipment technical field, especially a grounding device for rail transit. BACKGROUND

[0002] At present, the grounding device is usually used in the rail transit system to guarantee the safety of equipment and operating personnel. However, the double-layer cabinet door is usually arranged in the rail transit direct-current grounding device in the prior art, so that the inspection personnel cannot intuitively and clearly observe the grounding knife switch condition in the indoor primary chamber from outside. Moreover, the electric element such as the electric test locking controller is installed on the cabinet door, which will cause the problems of complex wiring, wire crossing the door, etc. When the switch cabinet door is opened, the cable fatigue life is easily damaged, the electrical life of the grounding device is shortened, and the electric test locking controller is generally large in size and difficult to install, which leads to the decrease of the space utilization rate in the grounding device. SUMMARY

[0003] The grounding device for rail transit can be beneficial to avoid the situation that the wire fatigue is easily caused by wire crossing the door, can avoid the influence of frequent opening and closing of the door on the cable use effect and life, the control module is convenient to install in the second chamber, is beneficial to solve the problem of large installation space required by the traditional controller, is beneficial to improve the internal space utilization rate of the second chamber, and enhances the practicability and appearance of the grounding device.

[0004] The utility model discloses an embodiment provides a grounding device, grounding device includes: cabinet and control module, the cabinet includes cabinet door, first chamber and second chamber, the cabinet door can open and close first chamber, second chamber, be equipped with high voltage device in first chamber, be equipped with low voltage device in second chamber, first chamber has visual isolation piece that can close first chamber cavity, and the isolation piece is located between the cavity of cabinet door and first chamber, control module is detachably arranged in second chamber, and control module is electrically connected with high voltage device, low voltage device.

[0005] The grounding device of the utility model technical scheme includes cabinet body and control module, the cabinet body includes cabinet door, first chamber and second chamber, the cabinet door can open and close the first chamber, the second chamber, the control module is detachably arranged in the second chamber, cancels the double-layer cabinet door in the traditional grounding device, sets up the control module on the door in the second chamber, reduces the moving frequency of control module, is favorable to avoid appearing the condition that cross door wiring is easy to make the wire fatigue, also can avoid the influence of frequent door opening and closing on the cable use effect and service life, the control module is convenient for installation in the second chamber, is favorable to solve the problem that the installation space required by the traditional controller is larger, is favorable to improve the internal space utilization rate of the second chamber, strengthens the practicality and the appearance of the grounding device. The first chamber has a visual isolation piece that can close the first chamber cavity, the isolation piece is located between the cabinet door and the cavity of the first chamber, which is conducive to improving the isolation safety of high-voltage devices in the first chamber, and also facilitates the observation of the state of high-voltage devices in the first chamber.

[0006] According to the foregoing embodiment of the utility model, the cavity of the second chamber is provided with a first connecting hole, the control module includes a shell and a second connecting hole, the second connecting hole is arranged on the shell, and the second connecting hole and the first connecting hole can be matched and connected through a connecting piece, so that the control module can be detachably arranged in the second chamber.

[0007] According to the foregoing embodiment of the utility model, the cavity of the second chamber is provided with a guide portion, the control module includes a shell and a clamping portion, the clamping portion is arranged on the shell, and the clamping portion and the guide portion are matched and connected, so that the control module can be detachably arranged in the second chamber.

[0008] According to any one of the foregoing embodiments of the utility model, the isolation piece includes a visual baffle, a fastener and a limiting groove. The fastener is arranged on the baffle, and the fastener can detachably arrange the baffle in the first chamber. The limiting groove is located at the bottom of the baffle, and the bottom of the first chamber has a limiting piece corresponding to the limiting groove and matched with the limiting groove.

[0009] According to any one of the foregoing embodiments of the utility model, a grounding knife switch is arranged in the first chamber, and a isolation plate module is detachably arranged between the first chamber and the second chamber. The isolation plate module is provided with a button, a change-over switch and an indicator lamp for displaying the state information of the grounding knife switch, and the grounding knife switch is located below the isolation plate module.

[0010] According to the foregoing embodiment of the utility model, an observation window is arranged on the cabinet door, and the observation window is used for observing the state of the button, the change-over switch, the indicator lamp and the grounding knife switch.

[0011] According to the foregoing embodiment of the utility model, a maintenance cover plate is detachably arranged on the top of the isolation plate module, and the maintenance cover plate is connected with the isolation plate module through a countersunk connecting piece.

[0012] According to the foregoing embodiment of the utility model, the opposite sides of the isolation plate module are provided with third connecting holes, and the third connecting holes are detachably connected with the inside of the cabinet body through the connecting pieces.

[0013] According to any one of the foregoing embodiments of the utility model, the grounding device further comprises a display module. The display module is arranged outside the cabinet body and is electrically connected with the control module through the waterproof structure. The display module can display the grounding state of the grounding device. The display module is further provided with a drainage groove at the bottom, and the drainage groove is arranged in cooperation with the waterproof structure.

[0014] According to any one of the foregoing embodiments of the utility model, the first chamber is further provided with a temperature control element, and the temperature control element is electrically connected with the control module. The grounding device further comprises a monitoring module and a base. The monitoring module is electrically connected with the control module, and the monitoring module is arranged in the cabinet door and / or the first chamber. The base is arranged at the bottom of the cabinet body, and the base comprises a plurality of multi-surface reinforcing rib structures.

[0015] The utility model technical scheme can set the control module in the second chamber through the matching connection of the connecting piece or the clamping part and the guide part, which is beneficial to solve the problem of large installation space required by the traditional controller, improve the utilization rate of the internal space of the second chamber, and enhance the practicability and aesthetics of the grounding device. The double-layer cabinet door in the traditional grounding device is cancelled, and the control module on the door is arranged in the second chamber, which reduces the moving frequency of the control module, avoids the situation that the cross-door wiring easily causes the fatigue of the electric wire, and avoids the influence of frequent door opening and closing on the use effect and service life of the cable. The visual isolation piece is beneficial to improve the isolation power safety of the high-voltage device in the first chamber, and is convenient for the operator to observe the state of the high-voltage device in the first chamber. The easy-to-disassemble design can also reduce the maintenance time. The utility model technical scheme arranges the indicator light, the button and the like in the same area, and the button and the indicator light are installed on the isolation plate module. The modular design can be preassembled, improve the production efficiency, does not affect the electrical isolation between the first chamber and the second chamber, and the state of the button, the change-over switch, the indicator light and the grounding knife switch can be directly and conveniently observed through the observation window. The monitoring module of the utility model technical scheme can be arranged at different installation positions, meets the monitoring of the grounding knife switch under different visual angles, and meets the installation requirements of different scenes. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained from the structures shown in the drawings without creative labor for those skilled in the art.

[0017] Figure 1 It is whole structure schematic view of one embodiment of the utility model for rail transit grounding device;

[0018] Figure 2 It is front view of one embodiment of the utility model for rail transit grounding device;

[0019] Figure 3 It is structure schematic view of isolating piece in one embodiment of the utility model for rail transit grounding device;

[0020] Figure 4 It is structure schematic view of isolating plate module in one embodiment of the utility model for rail transit grounding device;

[0021] Figure 5 It is structure schematic view of dismounting and overhauling cover plate in one embodiment of the utility model for rail transit grounding device;

[0022] Figure 6 It is structure schematic view of isolating plate module installation in cabinet in one embodiment of the utility model for rail transit grounding device;

[0023] Figure 7 It is structure schematic view of one embodiment of control module in the utility model for rail transit grounding device;

[0024] Figure 8 It is structure schematic view of one embodiment of control module in the utility model for rail transit grounding device and installation plate connection;

[0025] Figure 9 It is structure schematic view of another embodiment of control module in the utility model for rail transit grounding device;

[0026] Figure 10 It is structure schematic view of another embodiment of control module in the utility model for rail transit grounding device and guiding portion connection;

[0027] Figure 11 It is principle view of control module in one embodiment of the utility model for rail transit grounding device;

[0028] Figure 12 It is structure schematic view of display module in one embodiment of the utility model for rail transit grounding device;

[0029] Figure 13 It is base structure schematic view in one embodiment of the utility model for rail transit grounding device.

[0030] Explanation of figure mark number:

[0031] Cabinet body-100, control module-200, isolation plate module-300, display module-400, monitoring module-500, base-600;

[0032] Cabinet door-110, first chamber-120, second chamber-130, shell-210, connecting piece-220, clamping part-230, button-310, change-over switch-320, indicator light-330, maintenance cover plate-340, countersunk connecting piece-350, third connecting hole-360, connecting screw-370, waterproof wire passing joint-410, drainage groove-420, mounting piece-430;

[0033] Observation window-111, isolation piece-121, limiting piece-122, grounding knife switch-123, temperature and humidity sensor-124, heater-125, first connecting hole-131, guide part-132, mounting plate-133, first part-361, second part-362;

[0034] Baffle-1211, fastener-1212, limiting groove-1213.

[0035] The purposes, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0037] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0038] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0039] At present, urban rail transit generally adopts DC catenary or contact rail power supply. When the catenary or contact rail and its surrounding electrical equipment are powered off for maintenance and repair, in order to ensure the personal safety of the maintenance personnel, the safety measures of grounding operation are usually adopted, that is, the catenary is short-circuited with the return rail by using a grounding wire or a grounding knife switch, so as to prevent personnel injury caused by sudden power-on. In the past, the grounding wire was manually hung, and the electric verification and grounding operation were complicated, and a large number of tools needed to be carried, on the one hand, time-consuming and labor-intensive, on the other hand, there was a certain electric shock safety hazard to the on-site operating personnel. Therefore, since the twenty-first century, urban rail transit has gradually popularized the visual DC electric verification grounding device of rail transit, which replaces the traditional manual operation through remote electric verification and grounding, reduces the labor intensity of the on-site operating personnel, and is more reliable than the traditional manual grounding.

[0040] The grounding device for rail transit is beneficial to avoid the situation that the wire is easily fatigued by crossing the door, and can also avoid the influence of frequent door opening and closing on the use effect and service life of the cable. The control module is convenient to install in the second cavity, beneficial to solve the problem that the installation space required by the traditional controller is large, beneficial to improve the internal space utilization rate of the second cavity, and enhance the practicability and aesthetics of the grounding device.

[0041] As shown in Figures 1-2 The utility model embodiment provides a kind of grounding device, grounding device includes: cabinet 100 and control module 200, cabinet 100 includes cabinet door 110, first cavity 120 and second cavity 130, cabinet door 110 can open and close first cavity 120, second cavity 130, in the utility model embodiment, first cavity 120 is high-voltage area, and it is equipped with grounding knife switch 123, voltage sensor, spark gap and other main high-voltage, good equipment of insulating property, voltage sensor, fuse, spark gap and other high-voltage components are installed on insulating material bottom plate, beneficial to increase insulating protection property;Lightning arrester is also installed on grounding knife switch 123, to respond to outdoor lightning stroke.Second cavity 130 is low-voltage area, mainly installs control equipment, terminal etc. Figure 3 As shown in

[0042] The DC electric test grounding device is a main device for electric test and high voltage grounding, and is extremely important for protecting the on-site operators, and the connection of the internal cable is related to the reliability of the remote control of the DC electric test grounding device, therefore, the electrical connection reliability of the device is particularly important. The traditional DC electric test grounding device will install the electric test locking controller, indicator light, button and other components on the door of the secondary chamber for operation, but this will cause another problem: the cross-door wiring will affect the service life of the cable, and the frequent opening and closing of the door will reduce the reliability of the connection of the terminal.

[0043] The grounding device of the utility model technical scheme comprises a cabinet body 100 and a control module 200, the cabinet body 100 comprises a cabinet door 110, a first chamber 120 and a second chamber 130, the cabinet door 110 can open and close the first chamber 120 and the second chamber 130, the control module 200 is detachably arranged in the second chamber 130, the double-layer cabinet door 110 in the traditional grounding device is cancelled, the control module 200 on the door is arranged in the second chamber 130, the control module 200 does not need to move along with the opening and closing of the cabinet door 110, which is beneficial to reducing the moving frequency of the control module 200, avoiding the situation that the cross-door wiring is easy to cause the fatigue of the electric wire, and avoiding the influence of the frequent opening and closing of the door on the service effect and service life of the cable.

[0044] In the prior art, the cabinet body 100 of the grounding device adopts the design of double-layer door, which can not allow the inspection personnel to intuitively and clearly observe the state of the high voltage device in the first chamber 120 from outside, and increasing the side observation window to expand the observation area can increase the opening and installation steps of the whole cabinet body 100, and increase the risk of water leakage and glass breakage during transportation and on-site installation.

[0045] In the utility model technical scheme, the first chamber 120 is provided with a visual isolation piece 121 capable of sealing the cavity of the first chamber 120, and the isolation piece 121 is located between the cabinet door 110 and the cavity of the first chamber 120, which is beneficial to improving the isolation and electrical safety of the high voltage device in the first chamber 120, and is also convenient for the operator to observe the state of the high voltage device in the first chamber 120, thereby saving the inspection time.

[0046] As shown in Figures 1-3 As shown in Figures 4-5As shown, the isolation plate module 300 is provided with a button 310, a change-over switch 320 and an indicator lamp 330 for displaying the state information of the grounding knife switch 123. The isolation plate module 300 is detachably arranged between the first chamber 120 and the second chamber 130, and the button 310, the indicator lamp 330 and the change-over switch 320 can be installed on the isolation plate module 300 before final assembly, so as to form an independent isolation plate module 300.

[0047] As shown in the drawings, Figures 4-5 As shown, the top of the isolation plate module 300 is detachably provided with an inspection cover plate 340, and the inspection cover plate 340 is connected with the isolation plate module 300 through a countersunk connector 350, which is beneficial to avoid scratching the operator, and is convenient for the operator to maintain and replace the components inside the isolation plate module 300, and further improves the appearance and practicability of the grounding device.

[0048] As shown in the drawings, Figure 2 As shown, the grounding knife switch 123 is located below the isolation plate module 300, and the cabinet door 110 is provided with an observation window 111, which can simultaneously observe the states of the button 310, the change-over switch 320, the indicator lamp 330 and the grounding knife switch 123.

[0049] In the prior art, the indicator lamp 330 is usually installed on the inner cabinet door 110, and the real-time state of the grounding knife switch 123 cannot be directly observed during on-site maintenance operation, such as reverse rotation or jamming of the grounding knife switch 123, so that the power cannot be turned off in time, and the damage risk of the grounding device is increased.

[0050] The technical scheme of the utility model arranges the indicator lamp 330, the button 310 and the like in the same area as the grounding knife switch 123, and the button 310 and the indicator lamp 330 are installed on the isolation plate module 300, so that the modular design can be preassembled to improve the production efficiency, and at the same time, the electrical isolation between the first chamber 120 and the second chamber 130 is not affected, and the states of the button 310, the change-over switch 320, the indicator lamp 330 and the grounding knife switch 123 can be directly and conveniently observed through the observation window 111.

[0051] Compared with the traditional direct current grounding device, the indicating lamp 330, the button 310 and the like are installed on the secondary indoor door to facilitate operation, and in the technical scheme of the utility model, the indicating lamp 330, the button 310 and the like are installed on the isolation plate module 300, which is beneficial to avoid the situation that the cross-door wiring is easy to cause the fatigue of the electric wire, and can also avoid the influence of frequent opening and closing of the door on the use effect and service life of the cable. After the elements on the traditional secondary indoor door are installed in the cabinet, the on-site inspection personnel can see the state of the indicating lamp 330, the button 310 and the grounding knife gap 123 in the cabinet 100 through only one observation window 111, the step of needing to open the cabinet door 110 to observe or observing the situation in the cabinet from the side observation window 111 is reduced, the inspection time of the on-site operating personnel is further reduced, and the on-site inspection and maintenance troubleshooting are facilitated.

[0052] As shown in Figure 6 The opposite sides of the isolation plate module 300 are provided with third connecting holes 360, and the third connecting holes 360 are detachably connected with the inside of the cabinet 100 through connecting screws 370. The third connecting holes 360 include first portions 361 and second portions 362, and the first portions 361 and the second portions 362 are in an L shape. When the isolation plate module 300 is finally fixed, the connecting screws 370 are located on the horizontally arranged second portions 362, which is beneficial to improve the anti-seismic performance of the isolation plate module 300 and further improve the stability of the grounding device.

[0053] As shown in Figure 3 The isolation piece 121 includes a visual baffle 1211, a fastener 1212 and a limiting groove 1213. The fastener 1212 is arranged on the baffle 1211, and the fastener 1212 can detachably arrange the baffle 1211 in the first chamber 120. The limiting groove 1213 is located at the bottom of the baffle 1211, and the first chamber 120 has a limiting piece 122 corresponding to and matchable with the limiting groove 1213 at the bottom, so as to arrange the baffle 1211 in the first chamber 120 and insulate and isolate the high-voltage devices in the first chamber 120. The first chamber 120 is provided with the visual isolation piece 121, the isolation piece 121 includes the visual baffle 1211, the baffle 1211 is made of insulating transparent material such as acrylic plate, the bottom of the isolation piece 121 is provided with the limiting groove 1213, and the two sides are provided with the manually detachable fastener 1212 for fixation, which can ensure the safety of insulation of high voltage, the fastener 1212 is easy to detach and maintain during maintenance, and the situation of each element in the cabinet can be directly observed through the observation window 111 and the visual isolation piece 121 from the outside of the cabinet 100. When the cabinet door 110 is opened, the situation of each element in the cabinet can also be directly observed. When maintenance is needed, the baffle 1211 can be quickly detached through the fastener 1212, the maintenance efficiency of each element is improved, and time is saved.

[0054] As Figures 7-8 shown, in an embodiment of the present application, the cavity of the second chamber 130 is provided with a mounting plate 133, and a plurality of first connecting holes 131 are arranged on the mounting plate 133; the control module 200 comprises a shell 210 and a second connecting hole 220, the second connecting hole 220 is arranged on the shell 210, and the second connecting hole 220 and the first connecting hole 131 can be matched and connected through a connecting piece 230, so that the control module 200 can be detachably arranged in the second chamber 130, and the connecting piece 230 can adopt the form of a connecting nut-screw.

[0055] As Figures 9-10 shown, in another embodiment of the present application, the cavity of the second chamber 130 is provided with a guide part 132 in the form of a sliding rail, and the control module 200 comprises a shell 210 and a clamping part 240, the clamping part 240 is arranged on the shell 210, and the clamping part 240 comprises a clamping groove, which can be matched and connected with the sliding rail, so that the control module 200 can be detachably arranged in the second chamber 130.

[0056] Compared with the size of the traditional electric test locking controller, the installation mode is strict, and in the embodiment of the present application, the control module 200 is small in size and convenient to install, can be directly installed in the second chamber 130 through the connecting piece 230 or the mode of hanging on the guide part 132, the installation mode is simple and fast, which is helpful to solve the problem that the traditional electric test locking controller requires a large installation space, is helpful to improve the internal space utilization rate of the second chamber 130, and enhances the practicability and beauty of the device.

[0057] The control module 200 is small in overall size and does not affect its use function, as Figure 11 shown, the basic functions of the control module 200 include but are not limited to: (1) collecting the state information of the electric grounding knife switch 123 and controlling its opening / closing; (2) judging whether to perform discharge operation through the voltage value measured by the voltage sensor collected through an analog signal; (3) collecting and state inputting information of the display module 400 including but not limited to the temperature and humidity sensor, the cabinet door 110 lock, and the display module 400 through RS485 communication; (4) controlling the heater 125 to work through the information fed back by the temperature and humidity sensor 124; (5) controlling the unlocking operation of the cabinet door 110 lock through the handle button; (6) controlling the on-off of the indicator lamp 330 and the illuminating lamp in the cabinet; (7) the control module 200 is connected to the network switch through the network port, realizes the control of the monitoring module and the locking module of the grounding device, and is connected to the main station background, and the main station further controls the entire electric test grounding device through the control module 200.

[0058] As Figure 12As shown, the grounding device further comprises a display module 400. The display module 400 is welded outside the cabinet body 100, and the display module 400 is electrically connected with the control module 200 through the bottom outlet, and the display content of the display module is determined by the control module 200, such as grounded, not grounded, voltage value, etc. Through the display module 400, the real-time state of the grounding device can be observed, and the observation window 111 structure on the front of the grounding device main body can also directly observe the real-time state of the indicator light 330 and the grounding knife switch 123 in the cabinet body 100, which is convenient for on-site personnel to patrol and overhaul. The display screen mounting piece 430 is welded on the top of the cabinet body 100, which can not only ensure the connection reliability, but also simplify the entire assembly steps and reduce the cost. The mounting piece 430 welded on the top of the cabinet body 100 can also effectively raise the installation height of the display screen, which is convenient for the inspection personnel to observe.

[0059] As shown in Figure 12 A waterproof wire joint 410 is reserved on the cabinet body 100, so that the waterproof effect between the display module 400 and the cabinet body 100 is better. The mounting piece 430 of the display module 400 is also provided with three semicircular drainage grooves 420 at the bottom, which are matched with the waterproof wire joint 410 and can quickly drain the internal water in heavy rain, which is beneficial to improve the waterproof effect of the display module 400.

[0060] As shown in Figure 2 The first chamber 120 is also provided with a temperature control element, which is electrically connected with the control module 200. The temperature control element includes but is not limited to a temperature and humidity sensor 124 and a heater 125. When the control module 200 detects that the humidity inside the first chamber 120 reaches a preset value, the heater 125 is turned on, which is beneficial to prevent the formation of condensation beads on the contacts of the grounding knife switch 123, and is beneficial to improve the grounding reliability of the grounding device and improve the safety of electricity use.

[0061] As shown in Figure 1 The grounding device further comprises a monitoring module 500, which is electrically connected with the control module 200.

[0062] The video monitoring module 500 of the traditional direct current grounding device is fixed in one position, but the track traffic site is complex, and the video monitoring module 500 may also be affected by factors such as external environmental light and strong light on the site. Therefore, the video monitoring module 500 fixed in the position still has limitations in response to different environments.

[0063] In the embodiment of the utility model, monitoring module 500 is provided with two installation positions in the cabinet, which are located in cabinet door 110 and / or first chamber 120 respectively, and can also be arranged at different installation positions according to different visual angle requirements, or the number of monitoring module 500 is increased, so as to meet the monitoring of grounding knife switch 123 under different visual angles, so that the background personnel can more clearly check the state of grounding knife switch 123 through monitoring module 500, further enhance the visualization effect of the grounding device, and be beneficial to the personal safety of the on-site staff.

[0064] As shown in Figure 1 The grounding device further comprises a base 600, which is arranged at the bottom of the cabinet body 100. The base 600 is an important supporting member of the entire device, and therefore the structural stability is extremely important. In the embodiment of the utility model, as shown in Figure 13 The eight points in space of the base 600 are all connected by three reinforcing ribs, which improves the structural strength and stability of the base 600, so that the base 600 can withstand the weight of the grounding device and the vibration generated by the operation of the rail transit vehicle, and ensures the stable operation of the grounding device. Preferably, a buffer member such as a buffer gasket can be arranged between the base 600 and the cabinet body 100, which is beneficial to improve the stability of the cabinet body 100.

[0065] The technical scheme of the utility model can set the control module 200 in the second chamber 130 by matching and connecting the connecting member 230 or the clamping part 240 with the guide part 132, which is beneficial to solve the problem of large installation space required by the traditional controller, improve the utilization rate of the internal space of the second chamber 130, and enhance the practicability and aesthetics of the grounding device. The double-layer cabinet door 110 in the traditional grounding device is cancelled, and the control module 200 on the door is arranged in the second chamber 130, which reduces the number of movements of the control module 200, is beneficial to avoid the situation that the cross-door wiring is easy to cause the fatigue of the electric wire, and can also avoid the influence of frequent opening and closing of the door on the use effect and service life of the cable. The visual isolation member 121 is beneficial to improve the isolation electrical safety of the high-voltage device in the first chamber 120, and is also convenient for the operator to observe the state of the high-voltage device in the first chamber 120. The easy-to-disassemble design can also reduce the maintenance and repair time. The technical scheme of the utility model arranges the indicator lamp 330 and the button 310 in the same area as the grounding knife switch 123, and the button 310 and the indicator lamp 330 are arranged on the isolation plate module 300. The modular design can be pre-assembled, improve the production efficiency, and at the same time does not affect the electrical isolation between the first chamber 120 and the second chamber 130. The state of the button 310, the change-over switch 320, the indicator lamp 330 and the grounding knife switch 123 can be directly and conveniently observed through the observation window 111. The monitoring module 500 of the technical scheme of the utility model can be arranged at different installation positions, meets the monitoring of the grounding knife switch 123 under different visual angles, and meets the installation requirements of different scenes.

[0066] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A grounding device for rail transport, characterized in that, The grounding device comprises: a cabinet body comprising a cabinet door, a first chamber and a second chamber, the cabinet door being capable of opening and closing the first chamber and the second chamber, high-voltage devices being arranged in the first chamber, low-voltage devices being arranged in the second chamber, the first chamber being provided with a visual isolation piece capable of closing the first chamber, the isolation piece being arranged between the cabinet door and the chamber of the first chamber; and a control module arranged in the second chamber in a detachable manner, the control module being electrically connected with the high-voltage devices and the low-voltage devices.

2. The grounding device of claim 1, wherein, The chamber of the second chamber is internally provided with a first connecting hole, the control module comprises a shell and a second connecting hole, the second connecting hole being arranged on the shell, the second connecting hole and the first connecting hole being capable of being connected by a connecting piece to detachably arrange the control module in the second chamber.

3. The grounding device of claim 1, wherein, The chamber of the second chamber is internally provided with a guide part, the control module comprises a shell and a clamping part, the clamping part being arranged on the shell, the clamping part and the guide part being capable of being connected to detachably arrange the control module in the second chamber.

4. The grounding device according to any one of claims 2 or 3, characterized in that The isolation piece comprises: a visual baffle; a fastener arranged on the baffle, the fastener being capable of detachably arranging the baffle in the first chamber; and a limiting groove arranged at the bottom of the baffle, the bottom of the first chamber being provided with a limiting piece corresponding to the limiting groove and capable of being connected with the limiting groove.

5. The grounding device of any one of claims 2 or 3, wherein, The first chamber is internally provided with a grounding knife switch, the first chamber and the second chamber are detachably provided with an isolation plate module, the isolation plate module being provided with a button, a change-over switch and an indicator for displaying the state information of the grounding knife switch, the grounding knife switch being arranged below the isolation plate module.

6. The grounding device of claim 5, wherein, The cabinet door is provided with an observation window for observing the state of the button, the change-over switch, the indicator and the grounding knife switch.

7. The grounding device of claim 5, wherein, The top of the isolation plate module is detachably provided with an inspection cover plate, the inspection cover plate being connected with the isolation plate module by a countersunk connecting piece.

8. The grounding device of claim 5, wherein, Opposite sides of the isolation plate module are provided with third connecting holes, the third connecting holes being detachably connected with the inside of the cabinet body by connecting pieces.

9. The grounding device of any one of claims 2 or 3, wherein, The grounding device further comprises: a display module arranged outside the cabinet body and electrically connected with the control module by a waterproof structure, the display module being capable of displaying the grounding state of the grounding device, the bottom of the display module being further provided with a drainage groove, the drainage groove being arranged in cooperation with the waterproof structure.

10. The grounding device of any one of claims 2 or 3, wherein, The first chamber is further provided with a temperature control element, the temperature control element being electrically connected with the control module; The grounding device further comprises: a monitoring module electrically connected with the control module, the monitoring module being arranged in the cabinet door and / or the first chamber; and a base arranged at the bottom of the cabinet body, the base comprising a plurality of multi-faceted reinforcing rib structures.

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