Multifunctional maintenance device and maintenance handcart

Abstract

The utility model relates to the technical field of production equipment, in particular to a multifunctional maintenance device and a maintenance handcart. The multifunctional overhauling device comprises a rack, an electricity testing module and a grounding module, the electricity testing module comprises an electrification detection unit and an electrification display unit and is used for displaying the electrification condition obtained by the electrification detection unit, the grounding module comprises a grounding unit and a conduction unit, and the conduction unit is connected with the grounding unit and is used for displaying the electrification condition obtained by the electrification detection unit. And the conduction unit is in rotating contact with the live detection unit and is used for forming a grounding loop after the live detection unit, the conduction unit and the grounding unit are conducted. The maintenance handcart comprises a handcart body and the multifunctional maintenance device. According to the utility model, through the integrated device of electricity testing and grounding, rapid switching of electricity testing and grounding functions is realized, an operator does not need to hold an electricity testing rod by hand to test electricity and hang a grounding wire, the risk of electric shock of the operator is eliminated, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of production equipment, and particularly relates to a multifunctional maintenance device and a maintenance trolley. Background Art

[0002] During the power outage maintenance of medium-voltage system switch cabinets, for the protection of personal safety, a special simple voltage detector is generally used to open the access door of the switch cabinet, and then an electric testing rod is manually used to test the voltage. After confirming that the busbar is de-energized, the simple voltage detector is first withdrawn, and then an earthing trolley (or earthing wire is hung) is inserted to earth the busbar before the maintenance work on the switch cabinet and the line can be carried out. However, in the above operation process, there are great potential safety hazards in manually holding an electric testing rod for high-voltage voltage testing, and the voltage detector and the earthing trolley are maintenance vehicles with independent functions and cannot complete the voltage testing and earthing work at one time, resulting in low maintenance efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a multifunctional maintenance device and a maintenance trolley to solve the problems of potential safety hazards in manual voltage testing in the prior art and low maintenance efficiency caused by independent operations of voltage testing and earthing.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a multifunctional maintenance device, which includes a frame, and a voltage testing module and an earthing module arranged on the frame;

[0006] The voltage testing module includes a live detection unit and a live display unit. The live detection unit is used to contact the static contact in the switch cabinet to be tested, and the live display unit is connected to the live detection unit and is used to display the live condition obtained by the live detection unit;

[0007] The earthing module includes an earthing unit and a conduction unit. The earthing unit is used for earthing, the conduction unit is connected to the earthing unit, and the conduction unit is in rotational contact with the live detection unit and is used to form an earthing loop after the live detection unit, the conduction unit and the earthing unit are conducted;

[0008] Optionally, the live detection unit includes a high-voltage sensor and a busbar-side voltage testing conductive arm. The high-voltage sensor is connected to the live display unit. One end of the busbar-side voltage testing conductive arm is connected to the high-voltage sensor, and a meshing contact for connecting with the static contact in the switch cabinet to be tested is arranged at the other end of the busbar-side voltage testing conductive arm;

[0009] Optionally, a copper bar is arranged on the busbar-side voltage testing conductive arm so that after the conduction unit rotates, it contacts the copper bar on the busbar-side voltage testing conductive arm;

[0010] Optionally, the frame includes a support panel and a first cross beam disposed on one side of the support panel. The live display unit is disposed on the side of the support panel opposite to the first cross beam. The high-voltage sensor is disposed on the first cross beam, and multiple groups of live detection units are disposed along the length direction of the first cross beam.

[0011] Optionally, the conduction unit includes a support insulator and a grounding switch. The support insulator and the high-voltage sensor are located on the same side of the support panel. One end of the grounding switch is rotatably connected to the support insulator, and the other end of the grounding switch is used for mating contact with the copper busbar. The grounding unit is connected to the grounding switch and grounded.

[0012] Optionally, the conduction unit further includes a conductive connecting piece. The conductive connecting piece is disposed on the end of the support insulator away from the support panel, and the grounding switch is disposed on the support insulator by rotatably connecting to the conductive connecting piece. There are two grounding switches oppositely disposed on the conductive connecting piece, and a gap for mating contact with the copper busbar is formed between the two grounding switches. The grounding unit is connected to the grounding switch through the conductive connecting piece.

[0013] Optionally, a second cross beam on the same side as the first cross beam is disposed on the support panel. The support insulator is disposed on the second cross beam, and multiple groups of conduction units are disposed along the length direction of the second cross beam. The multiple groups of conduction units correspond to the multiple groups of live detection units one by one.

[0014] Optionally, the conduction unit further includes a connecting cross row. The connecting cross row transversely connects the grounding switches of multiple groups of conduction units. The grounding unit is connected to the conductive connecting piece of one group of conduction units, and multiple groups of conduction units are conducted to the grounding unit through the connecting cross row.

[0015] The present invention also discloses a maintenance trolley, including a vehicle body and the above-mentioned multifunctional maintenance device. The vehicle body includes a support platform and a traveling unit. The traveling unit includes multiple traveling wheels disposed at the bottom of the support platform. The multifunctional maintenance device is disposed on the support platform.

[0016] Optionally, the vehicle body further includes a propulsion mechanism. The propulsion mechanism includes a propulsion platform disposed on the support platform and a handle disposed on the propulsion platform. The multifunctional maintenance device is disposed on the propulsion platform, and the handle and the live display unit are located on the same side.

[0017] Compared with the prior art, the beneficial effects of the multifunctional maintenance device and the maintenance trolley provided by the embodiments of the present invention are as follows:

[0018] By arranging a live-line detection module and a power connection module on the rack, the live-line detection unit is used to contact the static contact in the switch cabinet to be measured, so as to detect the live condition of the busbar in the switch cabinet to be measured, and the live-line display unit is used for display, so that the operator can perform the live-line detection operation, and effectively eliminates the potential safety hazard of personal electric shock easily caused by the manual operation method using an electric test rod. At the same time, by rotating the contact between the conduction unit and the live-line detection unit, after the multifunctional maintenance device is pushed into the switch cabinet, the live-line detection module is first used for the live-line detection of the switch cabinet busbar. When it is determined that the switch cabinet busbar is not live, the conduction unit is controlled to rotate and then connected to the live-line detection unit to form a grounding circuit, so as to realize the grounding work of the switch cabinet busbar. Furthermore, through the integrated device for live-line detection and grounding, the rapid switching between the live-line detection and grounding functions is realized. There is no need for the operator to hold an electric test rod to perform live-line detection and hang the grounding wire, eliminating the electric shock risk of the operator and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solutions of the present invention will be further described in detail below in conjunction with the drawings and embodiments. In the drawings:

[0020] Figure 1 is a schematic assembly structure diagram of the live-line detection module and the grounding module of the multifunctional maintenance device provided by the embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the rotating state of the grounding knife switch of the multifunctional maintenance device provided by the embodiment of the present invention;

[0022] Figure 3 is a front view of the maintenance trolley provided by the embodiment of the present invention.

[0023] Figure 4 is a schematic diagram of the overall structure of the multifunctional maintenance device provided by the embodiment of the present invention;

[0024] The reference signs in the drawings are as follows:

[0025] 1, rack; 11, support panel; 12, first cross beam; 13, second cross beam; 2, live-line detection module; 21, live-line detection unit; 211, high-voltage sensor; 212, live-line detection conductive arm on the busbar side; 213, meshing contact; 214, copper bar; 22, live-line display unit; 3, grounding module; 31, grounding unit; 32, conduction unit; 321, support insulator; 322, grounding knife switch; 323, conductive connection piece; 324, connecting cross row; 4, support table; 5, walking unit; 6, propulsion mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Now, in combination with the accompanying drawings, the preferred embodiments of the present utility model will be described in detail.

[0027] The present utility model discloses a multifunctional maintenance device, as Figure 1 and Figure 2 shown, which includes a frame 1, and an electrification detection module 2 and a grounding module 3 arranged on the frame 1. The electrification detection module 2 includes a live detection unit 21 and a live display unit 22. The live detection unit 21 is used to contact the static contact in the switch cabinet to be measured, and the live display unit 22 is connected to the live detection unit 21 and is used to display the live condition obtained by the live detection unit 21. The grounding module 3 includes a grounding unit 31 and a conduction unit 32. The grounding unit 31 is used for grounding, the conduction unit 32 is connected to the grounding unit 31, and the conduction unit 32 is in rotational contact with the live detection unit 21 and is used to form a grounding loop after the live detection unit 21, the conduction unit 32 and the grounding unit 31 are conducted.

[0028] Through the implementation of the above multifunctional maintenance device, by arranging the electrification detection module 2 and the power connection module on the frame 1, the live detection unit 21 is used to contact the static contact in the switch cabinet to be measured, so as to detect the live condition of the busbar in the switch cabinet to be measured, and the live display unit 22 is used for display, so as to facilitate the operator to perform the electrification detection operation and timely determine whether the busbar of the switch cabinet is live, effectively eliminating the potential safety hazard of personal electric shock easily caused by the manual operation method using an electrification detection rod. At the same time, by using the rotational contact between the conduction unit 32 and the live detection unit 21, after the multifunctional maintenance device is pushed into the switch cabinet, first, the electrification detection module 2 is used for the electrification detection work of the switch cabinet busbar. When it is determined that the busbar of the switch cabinet is not live, then the conduction unit 32 is controlled to rotate and connect with the live detection unit 21 to form a grounding loop, so as to realize the grounding work of the switch cabinet busbar. Furthermore, through the integrated device for electrification detection and grounding, the rapid switching between the electrification detection and grounding functions is realized. There is no need for the operator to hold an electrification detection rod to perform electrification detection and hang a grounding wire, eliminating the risk of electric shock to the operator, improving the work efficiency, reducing the labor intensity, effectively simplifying the maintenance process, and being convenient to use. It is especially suitable for the multifunctional maintenance of 40.5 kV switch cabinets.

[0029] Further, the live detection unit 21 includes a high-voltage sensor 211 and a busbar-side electrification detection conductive arm 212. The high-voltage sensor 211 is connected to the live display unit 22. One end of the busbar-side electrification detection conductive arm 212 is connected to the high-voltage sensor 211, and a meshing contact 213 for connecting with the static contact in the switch cabinet to be measured is arranged at the other end of the busbar-side electrification detection conductive arm 212.

[0030] Through the implementation of the above-mentioned multi-functional maintenance device, after the multi-functional maintenance device is pushed into the working position of the switch cabinet, the live-line detecting and current-conducting arm 212 on the bus side is meshed and connected with the static contact in the switch cabinet to facilitate the conduction of high-voltage current, and a high-voltage signal is detected by the high-voltage sensor 211 to detect whether the bus is energized, and then it is converted into an electrical signal that can be processed by the live-line display unit 22. When the live-line display unit 22 shows no light alarm, it is determined that the bus of the switch cabinet is not energized, and at this time, the bus grounding work can be carried out. Thus, accurate live-line detection of the switch cabinet to be measured is achieved, and the risk of operators directly contacting high voltage is reduced, ensuring the safety of operators.

[0031] Further, as shown in Figure 3 , a copper bar 214 is arranged on the live-line detecting and current-conducting arm 212 on the bus side, so that after the conduction unit 32 rotates, it contacts the copper bar 214 on the live-line detecting and current-conducting arm 212 on the bus side.

[0032] Through the implementation of the above-mentioned multi-functional maintenance device, by using the copper bar 214 arranged on the live-line detecting and current-conducting arm 212 on the bus side, after the conduction unit 32 rotates, it contacts the copper bar 214, and the copper bar 214 is used to conduct the live-line detecting unit 21, the conduction unit 32 and the grounding unit 31 and form a grounding loop.

[0033] Further, the frame 1 includes a support panel 11 and a first cross beam 12 arranged on one side surface of the support panel 11. The live-line display unit 22 is arranged on the side surface of the support panel 11 opposite to the first cross beam 12, the high-voltage sensor 211 is arranged on the first cross beam 12, and multiple groups of live-line detecting units 21 are arranged along the length direction of the first cross beam 12.

[0034] Through the implementation of the above-mentioned multi-functional maintenance device, the high-voltage sensor 211 is fixed by the first cross beam 12, which helps to arrange multiple groups of live-line detecting units 21 in an orderly manner. At the same time, by using the arrangement of multiple groups of live-line detecting units 21, live-line detection of multi-phase current can be realized. For example, for three-phase current, three groups of live-line detecting units 21 can be arranged.

[0035] Further, the conduction unit 32 includes a support insulator 321 and a grounding knife switch 322. The support insulator 321 and the high-voltage sensor 211 are located on the same side of the support panel 11. One end of the grounding knife switch 322 is rotatably connected to the support insulator 321, and the other end of the grounding knife switch 322 is used to cooperate and contact with the copper bar 214, and the grounding unit 31 is connected to the grounding knife switch 322 and grounded.

[0036] Through the implementation of the above-mentioned multi-functional maintenance device, by means of the setting of the grounding switch 322, the grounding switch 322 can rotate relative to the support insulator 321. And the other end of the grounding switch 322 is used to cooperate and contact with the copper busbar 214. When the grounding switch 322 rotates to the position in contact with the copper busbar 214, the electrical connection between the conduction unit 32 and the copper busbar 214 can be realized. At the same time, since the grounding unit 31 is connected to the grounding switch 322 and grounded, the conduction unit 32 is further connected to the ground to form a grounding loop, and the grounding operation is completed. Thus, it is ensured that when the conduction unit 32 is in contact with the copper busbar 214, the current can flow safely to the ground through the grounding unit 31, protecting the safety of personnel and equipment.

[0037] Furthermore, the conduction unit 32 further includes a conductive connecting piece 323. The conductive connecting piece 323 is arranged at the end of the support insulator 321 far from the support panel 11, and the grounding switch 322 is arranged on the support insulator 321 by rotatably connecting with the conductive connecting piece 323. There are two grounding switches 322 oppositely arranged on the conductive connecting piece 323, and a gap for cooperating and contacting with the copper busbar 214 is formed between the two grounding switches 322. The grounding unit 31 is connected to the grounding switch 322 through the conductive connecting piece 323.

[0038] Through the implementation of the above-mentioned multi-functional maintenance device, by means of the setting of the conductive connecting piece 323, through the rotational connection between the grounding switch 322 and the conductive connecting piece 323, the grounding switch 322 can rotate relative to the support insulator 321. And by forming a gap for cooperating and contacting with the copper busbar 214 between the two grounding switches 322, when the grounding switch 322 rotates to a specific position, the gap between them can cooperate and contact with the copper busbar 214, thereby realizing the electrical connection between the conduction unit 32 and the copper busbar 214. At the same time, by using the grounding unit 31 connected to the grounding switch 322 through the conductive connecting piece 323, when the conduction unit 32 is in contact with the copper busbar 214, the current can flow safely to the ground through the grounding unit 31, thus protecting the safety of personnel and equipment.

[0039] Furthermore, a second cross beam 13 on the same side as the first cross beam 12 is arranged on the support panel 11. The support insulator 321 is arranged on the second cross beam 13, and multiple groups of conduction units 32 are arranged along the length direction of the second cross beam 13, and the multiple groups of conduction units 32 correspond to multiple groups of live detection units 21 one by one.

[0040] Furthermore, the conduction unit 32 further includes a connecting cross row 324, and the connecting cross row 324 transversely connects the grounding switches 322 of multiple groups of conduction units 32. The grounding unit 31 is connected to the conductive connecting piece 323 of one group of conduction units 32, and multiple groups of conduction units 32 are conducted to the grounding unit 31 through the connecting cross row 324.

[0041] Through the implementation of the above multi-functional maintenance device, the grounding unit 31 is preferably a grounding busbar. The grounding disconnect switches 322 of multiple groups of conduction units 32 are horizontally connected by the connecting horizontal row 324. When the grounding disconnect switches 322 of all the conduction units 32 rotate and contact the copper wires of the corresponding live detection units 21, only one set of grounding busbar needs to be set, and the grounding busbar is connected to the conductive connecting piece 323 of one set of conduction units 32, so that the grounding disconnect switches 322 of all the conduction units 32 can be grounded, thereby realizing more convenient maintenance operations and effectively reducing the maintenance cost.

[0042] The present utility model also discloses a maintenance trolley, which combines Figure 3 and Figure 4 As shown, it includes a vehicle body and the above multi-functional maintenance device. The vehicle body includes a support platform 4 and a traveling unit 5. The traveling unit 5 includes a plurality of traveling wheels arranged at the bottom of the support platform 4, and the multi-functional maintenance device is arranged on the support platform 4.

[0043] Furthermore, the vehicle body further includes a propulsion mechanism 6. The propulsion mechanism 6 includes a propulsion platform arranged on the support platform 4 and a handle arranged on the propulsion platform. The multi-functional maintenance device is arranged on the propulsion platform, and the handle and the live display unit 22 are located on the same side.

[0044] Through the setting of the above maintenance trolley, after the vehicle body is pushed into the working position of the switch cabinet by the propulsion mechanism 6, the busbar side voltage detecting conductive arm 212 and the high-voltage sensor 211 are first used for the voltage detection work of the switch cabinet busbar. When the live display unit 22 shows that the switch cabinet busbar is de-energized, then control the grounding disconnect switches 322 of each group of conduction units 32 to rotate and contact the copper wires of the corresponding live detection units 21 to form a grounding loop, thereby realizing the grounding work of the switch cabinet busbar. It effectively eliminates the potential safety hazard of personal electric shock easily caused by the manual operation method using a voltage detector, improves the work efficiency, eliminates the risk of personal electric shock, and can quickly convert from a voltage detection trolley to a grounding trolley for busbar grounding, so as to carry out the maintenance work of the switch cabinet, that is, only one trolley can achieve the purposes of voltage detection and grounding. The product has a wide application range, a simple structure, is convenient to use and is safe and reliable.

[0045] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some of the technical features can be equivalently replaced; and all such modifications and replacements should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A multifunctional maintenance device, characterized in that, The multifunctional maintenance device includes a frame, as well as a live-line detection module and a grounding module arranged on the frame; The live-line detection module includes a live-line detection unit and a live-line display unit. The live-line detection unit is used to contact the static contact in the switch cabinet to be tested, and the live-line display unit is connected to the live-line detection unit and is used to display the live-line condition obtained by the live-line detection unit; The grounding module includes a grounding unit and a conduction unit. The grounding unit is used for grounding, the conduction unit is connected to the grounding unit, and the conduction unit is in rotational contact with the live-line detection unit and is used to form a grounding loop after the live-line detection unit, the conduction unit, and the grounding unit are conducted; 2. The multifunctional maintenance device according to claim 1, wherein: The live-line detection unit includes a high-voltage sensor and a live-line detection conductive arm on the bus side. The high-voltage sensor is connected to the live-line display unit. One end of the live-line detection conductive arm on the bus side is connected to the high-voltage sensor, and a meshing contact connected to the static contact in the switch cabinet to be tested is arranged at the other end of the live-line detection conductive arm on the bus side; 3. The multifunctional maintenance device according to claim 2, wherein: A copper bar is arranged on the live-line detection conductive arm on the bus side so that after the conduction unit rotates, it contacts the copper bar on the live-line detection conductive arm on the bus side; 4. The multifunctional maintenance device according to claim 3, characterized in that: The frame includes a support panel and a first cross beam arranged on one side surface of the support panel. The live-line display unit is arranged on the side surface of the support panel opposite to the first cross beam. The high-voltage sensor is arranged on the first cross beam, and multiple groups of the live-line detection units are arranged along the length direction of the first cross beam; 5. The multifunctional maintenance device according to claim 4, characterized in that: The conduction unit includes a support insulator and a grounding switch. The support insulator and the high-voltage sensor are located on the same side of the support panel. One end of the grounding switch is rotatably connected to the support insulator, and the other end of the grounding switch is used to cooperate with the copper bar for contact. The grounding unit is connected to the grounding switch and is grounded; 6. The multifunctional maintenance device according to claim 5, characterized in that: The conduction unit further includes a conductive connecting piece. The conductive connecting piece is arranged at the end of the support insulator away from the support panel, and the grounding switch is arranged on the support insulator by rotatably connecting with the conductive connecting piece. Two grounding switches are oppositely arranged on the conductive connecting piece, and a gap for cooperating with the copper bar for contact is formed between the two grounding switches. The grounding unit is connected to the grounding switch through the conductive connecting piece; 7. The multi-functional maintenance device according to claim 6, characterized in that: A second cross beam on the same side as the first cross beam is arranged on the support panel. The support insulator is arranged on the second cross beam, and multiple groups of the conduction units are arranged along the length direction of the second cross beam. Multiple groups of the conduction units correspond to multiple groups of the live-line detection units one by one; 8. The multi-functional maintenance device according to claim 7, characterized in that: The conduction unit further includes a connecting cross row. The connecting cross row transversely connects the grounding switches of multiple groups of the conduction units. The grounding unit is connected to the conductive connecting piece of one group of the conduction units, and multiple groups of the conduction units are conducted with the grounding unit through the connecting cross row; 9. A maintenance trolley, characterized in that: The maintenance trolley includes a vehicle body and the multi-functional maintenance device according to any one of claims 1-8. The vehicle body includes a support platform and a traveling unit. The traveling unit includes a plurality of traveling wheels provided at the bottom of the support platform. The multi-functional maintenance device is provided on the support platform.

10. The overhaul trolley according to claim 9, characterized in that: The vehicle body further includes a propulsion mechanism. The propulsion mechanism includes a propulsion platform provided on the support platform and a handle provided on the propulsion platform. The multi-functional maintenance device is provided on the propulsion platform, and the handle and the live display unit are located on the same side.

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