CN111999675B - Single-phase grounding monitoring system based on power distribution network - Google Patents
Single-phase grounding monitoring system based on power distribution network Download PDFInfo
- Publication number
- CN111999675B CN111999675B CN202010885000.XA CN202010885000A CN111999675B CN 111999675 B CN111999675 B CN 111999675B CN 202010885000 A CN202010885000 A CN 202010885000A CN 111999675 B CN111999675 B CN 111999675B
- Authority
- CN
- China
- Prior art keywords
- piston
- magnetic bottle
- distribution network
- monitoring system
- power distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Patch Boards (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention relates to a single-phase grounding monitoring system based on a power distribution network, wherein a first support magnetic bottle rotating along a hinge seat is arranged on the hinge seat, a second support magnetic bottle is also arranged on the hinge seat, a first electric connecting rod and a second electric connecting rod are connected between the first support magnetic bottle and the second support magnetic bottle, a third electric connecting rod is connected between the second support magnetic bottle and a third support magnetic bottle, an electrifying signal transmitter is arranged on the third support magnetic bottle, a signal amplifier is arranged at the upper end of the installation seat, a Bluetooth signal transmitting box is arranged on one side of the signal amplifier, a signal transmission rod is arranged at the upper end of the Bluetooth signal transmitting box, an electrifying signal receiver corresponding to the electrifying signal transmitter is arranged at the upper end of the signal transmission rod, an electric conducting movable rod is arranged at the upper end of a driving structure, an electric connecting switch is arranged at one end of the electric conducting movable rod, which is far away from the driving mechanism, and an inserting slot for inserting the electric connecting switch is arranged on the second support magnetic bottle. The invention realizes the real-time monitoring of the single-phase grounding electrifying grounding signal of the power distribution network.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a single-phase grounding monitoring system based on a power distribution network.
Background
The majority of medium and low voltage power distribution networks in China are in a small current grounding mode, wherein 66kV and 35kV power networks are mainly in a neutral point arc suppression coil grounding mode, 6kV to 10kV power networks are partially in a neutral point ungrounded mode, and are partially in a neutral point arc suppression coil grounding mode.
In the single-phase ground connection in-process of distribution network commonly used at present, the degree of difficulty of monitoring is great, and the stability of monitoring is relatively poor, so need urgently to develop a single-phase ground connection monitoring system based on distribution network and solve the problem among the prior art.
Disclosure of Invention
The invention aims to provide a single-phase grounding monitoring system based on a power distribution network, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a single-phase ground connection monitoring system based on distribution network, includes the support, the support upper end is equipped with the mount pad, install articulated seat on the mount pad, be equipped with on the articulated seat along the rotatory first pillar magnetism bottle of articulated seat, still be equipped with second pillar magnetism bottle on the articulated seat, be connected with first electricity connecting rod and second electricity connecting rod between first pillar magnetism bottle and the second pillar magnetism bottle, first electricity connecting rod and second electricity connecting rod are connected with first pivot between connecting rod, be equipped with third pillar magnetism bottle on the mount pad, be connected with the third between second pillar magnetism bottle and the third pillar magnetism bottle and connect the electricity connecting rod, be equipped with the circular telegram signal transmitter on the third pillar magnetism bottle, the mount pad upper end is equipped with signal amplifier, one side of signal amplifier is equipped with bluetooth signal transmission case, bluetooth signal transmission case upper end is equipped with the circular telegram signal receiver who corresponds the setting with the circular telegram signal transmitter, support one side is equipped with ground connection case, ground connection case upper end is equipped with actuating mechanism, the electrically conductive movable rod keeps away from actuating mechanism's one end, the second electricity supply switch inserts the slot.
As a further scheme of the invention: and a movable groove for the first power connection connecting rod to move is formed in the second support magnetic bottle.
As a further scheme of the invention: and a guide box for limiting the rotation of the conductive movable rod is arranged on one side of the support.
As a further scheme of the invention: the upper end and the lower end of the guide box are both provided with limiting sleeves for limiting the rotation of the conductive movable rod.
As a further scheme of the invention: the guide box is internally provided with a first installation cavity, a first installation plate is arranged in the first installation cavity, a second rotating shaft is arranged on the first installation plate, a guide roller is arranged on the periphery of the second rotating shaft, and the guide roller is in contact with the conductive movable rod.
As a further scheme of the invention: and a buffer rubber sleeve is arranged on the periphery of the guide roller.
As a further scheme of the invention: the bottom is equipped with first piston in the first installation cavity, one side that first piston is close to first mounting panel is equipped with first piston axle, one side that first piston axle is close to first mounting panel is equipped with the second piston, the second piston is fixed on first mounting panel, be equipped with first spring between first piston and the second piston, first spring cup joints the periphery at first piston axle.
As a further scheme of the invention: the second pillar magnetic bottle is arranged in the slot and is symmetrically provided with a pair of second mounting plates relative to the slot, the opposite side of the second mounting plates is provided with a conductive plate, and the conductive plate is connected with an electric connection wire.
As a further scheme of the invention: one side that the second mounting panel is close to the current conducting plate is equipped with the third piston, one side that the third piston is close to the current conducting plate is equipped with the second piston axle, the second piston axle is fixed at the current conducting plate.
As a further scheme of the invention: and a second spring is arranged between the third piston and the conductive plate and sleeved on the periphery of the second piston shaft.
Compared with the prior art, the invention has the beneficial effects that: when the device is used, the first support magnetic bottle and the second support magnetic bottle are externally connected with a grounding wire, and the angle between the first electric connecting rod and the second electric connecting rod is adjusted, so that the adjustment of the distance between the first support magnetic bottle and the second support magnetic bottle is facilitated.
Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a single-phase grounding monitoring system based on a power distribution network according to the present invention;
FIG. 2 is a cross-sectional view of a guide box in the single-phase grounding monitoring system based on the power distribution network according to the present invention;
fig. 3 is a partial cross-sectional view of a second pillar magnetic bottle in the single-phase grounding monitoring system based on the power distribution network according to the invention.
In the figure: 1. a support; 2. a ground tank; 3. a conductive movable rod; 4. connecting a power switch; 5. a mounting seat; 6. a first pillar magnetic bottle; 7. a second pillar magnetic bottle; 8. a second power connection link; 9. a first power connection link; 10. a third power connection link; 11. a third pillar magnetic bottle; 12. a power-on signal transmitter; 13. a signal amplifier; 14. a signal transmission rod; 15. a power-on signal receiver; 16. a movable groove; 17. a first rotating shaft; 18. a guide box; 19. a limiting sleeve; 20. a first mounting cavity; 21. a first piston; 22. a first piston shaft; 23. a first spring; 24. a second piston; 25. a first mounting plate; 26. a second rotating shaft; 27. a guide roller; 28. a buffer rubber sleeve; 29. a Bluetooth signal transmitting box; 30. a drive mechanism; 32. a slot; 33. a second mounting plate; 34. a third piston; 35. a second spring; 36. a second piston shaft; 37. a conductive plate; 38. and connecting the electric lead.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention, a single-phase ground monitoring system based on a power distribution network includes a support 1, an installation seat 5 is disposed at an upper end of the support 1, a hinge seat is mounted on the installation seat 5, a first pillar magnetic bottle 6 rotating along the hinge seat is disposed on the hinge seat, a second pillar magnetic bottle 7 is further disposed on the hinge seat, a first connecting rod 9 and a second connecting rod 8 are connected between the first pillar magnetic bottle 6 and the second pillar magnetic bottle 7, a first rotating shaft 17 is connected between the first connecting rod 9 and the second connecting rod 8, a third pillar magnetic bottle 11 is disposed on the installation seat 5, a third connecting rod 10 is connected between the second pillar magnetic bottle 7 and the third pillar magnetic bottle 11, an energizing signal transmitter 12 is disposed on the third pillar magnetic bottle 11, a signal amplifier 13 is disposed at an upper end of the installation seat 5, a bluetooth signal transmitting box 29 is disposed at one side of the signal amplifier 13, a signal transmitting box 14 is disposed at an upper end of the bluetooth signal transmitting box 29, an energizing signal receiver 12 corresponding to the signal transmitter 12 is disposed at an upper end of the signal transmitting box 14, a conductive switch 30 is disposed at an upper end of the support 7, and a conductive switch 30 is disposed at a side of the conductive switch mechanism remote from the conductive switch 7, and a conductive switch 30 is disposed at an upper end of the conductive switch 7. When the device is used, the first support magnetic bottle 6 and the second support magnetic bottle 7 are externally connected with a grounding wire, the first power connection connecting rod 9 and the second power connection connecting rod 8 are used for adjusting the angle between the first support magnetic bottle 6 and the second support magnetic bottle 7, in addition, the electric connection with the second support magnetic bottle 7 is realized by the conductive movable rod 3, the conductive movable rod 3 is driven to rotate by the driving mechanism 30, the conductive movable rod 3 rotates to drive the power insertion switch to rotate, the power insertion switch enters the slot 32 after rotating, the second support magnetic bottle 7 is electrically connected with the conductive movable rod 3, the third support magnetic bottle 11 is electrically connected with the second support magnetic bottle 7 through the third power connection connecting rod 10, the power-on signal receiver 15 receives the power-on signal from the power-on signal transmitter 12, the power-on grounding signal is transmitted to the signal amplifier 13 by the signal transmission rod 14, the condition of the power-on grounding signal is transmitted to the remote control end by the signal amplifier 13 through the Bluetooth signal transmitting box 29, and the real-time monitoring of the single-phase grounding signal of the power distribution network is realized.
In this embodiment, the second pillar magnet bottle 7 is provided with a movable slot 16 for moving the first power connection link 9. The movable groove 16 for the first power connection connecting rod 9 to move is arranged on the second support magnetic bottle 7, so that the first power connection connecting rod 9 and the second power connection connecting rod 8 can rotate conveniently.
In this embodiment, a guide box 18 for limiting the rotation of the conductive movable rod 3 is provided at one side of the bracket 1. The arrangement of the guide box 18 improves the stability of the rotation of the conductive movable rod 3 by arranging the guide box 18 limiting the rotation of the conductive movable rod 3 at one side of the bracket 1.
In this embodiment, the upper end and the lower end of the guide box 18 are provided with a stop collar 19 for limiting the rotation of the conductive movable rod 3. Through all setting up the stop collar 19 that the restriction leads the rotatory guide movable rod 3 at guide box 18 upper end and lower extreme, the setting of stop collar 19 has further improved the rotatory stability of conductive movable rod 3.
In this embodiment, be equipped with first installation cavity 20 in the guide box 18, be equipped with first mounting panel 25 in the first installation cavity 20, be equipped with second pivot 26 on the first mounting panel 25, second pivot 26 periphery is equipped with guide roller 27, guide roller 27 and the setting of electrically conductive movable rod 3 contact. Through establishing first installation cavity 20 in guide box 18, establish first mounting panel 25 in the first installation cavity 20, establish second pivot 26 on the first mounting panel 25, guide roller 27 is established to second pivot 26 periphery, and guide roller 27 and electrically conductive movable rod 3 contact setting can utilize guide roller 27 to improve the rotatory stability of electrically conductive movable rod 3 so.
In this embodiment, the guide roller 27 is provided with a cushion rubber sleeve 28 on the outer periphery. By providing the cushion rubber sleeve 28 on the outer periphery of the guide roller 27, the arrangement of the cushion rubber sleeve 28 can improve the stability of the rotation of the conductive movable rod 3.
In this embodiment, the bottom is equipped with first piston 21 in first installation cavity 20, one side that first piston 21 is close to first mounting panel 25 is equipped with first piston axle 22, one side that first piston axle 22 is close to first mounting panel 25 is equipped with second piston 24, second piston 24 is fixed on first mounting panel 25, be equipped with first spring 23 between first piston 21 and the second piston 24, first spring 23 cup joints the periphery at first piston axle 22. Through establishing first piston 21 in first installation cavity 20 bottom, first piston shaft 22 and second piston 24, first piston shaft 22 is flexible in first piston 21 and second piston 24, it is scalable at the horizontal direction to have realized guide roller 27, the activity of electrically conductive movable rod 3 has so made things convenient for, in addition, establish first spring 23 between first piston 21 and second piston 24, utilize the elastic restoring force of first spring 23, it is scalable at the horizontal direction to have realized guide roller 27, guide roller 27 is spacing to electrically conductive movable rod 3 has been realized, the rotatory stability of electrically conductive movable rod 3 has been improved, and then the stability of connecting or breaking operation has been improved to the electricity.
In this embodiment, the second pillar magnet bottle 7 is provided with a pair of second mounting plates 33 in the slot 32 and symmetrically arranged with respect to the slot 32, the opposite sides of the second mounting plates 33 are provided with conductive plates 37, and the conductive plates 37 are connected with power connection wires 38. Through making second pillar magnetism bottle 7 in slot 32 and for slot 32 symmetry establish a pair of second mounting panel 33, the relative one side of second mounting panel 33 all establishes electrically conductive board 37, connects on the electrically conductive board 37 and connects electric wire 38, so can conveniently connect the ground connection of electric switch 4.
In this embodiment, a third piston 34 is disposed on a side of the second mounting plate 33 close to the conductive plate 37, a second piston shaft 36 is disposed on a side of the third piston 34 close to the conductive plate 37, and the second piston shaft 36 is fixed to the conductive plate 37. Through establishing third piston 34 in one side that is close to electrically conductive plate 37 at second mounting panel 33, second piston shaft 36 is established in one side that third piston 34 is close to electrically conductive plate 37 to fix second piston shaft 36 on electrically conductive plate 37, so set up, second piston shaft 36 is flexible in the piston, realized that electrically conductive plate 37 can receive when connecing electric switch 4 extrusion, electrically conductive plate 37 can stretch out and draw back in vertical direction, and then improved the flexibility of connecing the electricity connection, make things convenient for the insertion of electrically conductive plate 37.
In this embodiment, a second spring 35 is disposed between the third piston 34 and the conductive plate 37, and the second spring 35 is fitted around the outer periphery of the second piston shaft 36. Through establishing second spring 35 before third piston 34 and conducting plate 37, second spring 35 cup joints the periphery at second piston shaft 36, so sets up, utilizes the elastic flexibility of second spring 35, has realized that conducting plate 37 when receiving the extrusion, and conducting plate 37 utilizes second spring 35 can realize extrudeing switch 4, has improved the stability of ground connection.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The single-phase grounding monitoring system based on the power distribution network is characterized by comprising a support, wherein an installation seat is arranged at the upper end of the support, a hinged seat is installed on the installation seat, a first supporting magnetic bottle rotating along the hinged seat is arranged on the hinged seat, a second supporting magnetic bottle is further arranged on the hinged seat, a first electric connecting rod and a second electric connecting rod are connected between the first supporting magnetic bottle and the second supporting magnetic bottle, a first rotating shaft is connected between the first electric connecting rod and the second electric connecting rod, a third supporting magnetic bottle is arranged on the installation seat, a third electric connecting rod is connected between the second supporting magnetic bottle and the third supporting magnetic bottle, an electrified signal transmitter is arranged on the third supporting magnetic bottle, a signal amplifier is arranged at the upper end of the installation seat, a Bluetooth signal transmitting box is arranged on one side of the signal amplifier, a signal transmission rod is arranged at the upper end of the Bluetooth signal transmitting box, an electrified signal receiver arranged at the upper end of the signal transmission rod and corresponding to the electrified signal transmitter is arranged, a grounding box is arranged on one side of the support, a driving mechanism is arranged at the upper end of the driving mechanism, a conductive movable rod is arranged at the end far away from a switch, and a second supporting magnetic bottle is inserted into a second electric switch;
a guide box for limiting the rotation of the conductive movable rod is arranged on one side of the bracket;
the guide box is internally provided with a first installation cavity, a first installation plate is arranged in the first installation cavity, a second rotating shaft is arranged on the first installation plate, a guide roller is arranged on the periphery of the second rotating shaft, and the guide roller is in contact with the conductive movable rod.
2. The power distribution network-based single-phase grounding monitoring system as claimed in claim 1, wherein a movable slot for moving the first power connection link is formed in the second pillar magnetic bottle.
3. The power distribution network-based single-phase grounding monitoring system as claimed in claim 1, wherein the upper end and the lower end of the guide box are provided with a limiting sleeve for limiting the rotation of the conductive movable rod.
4. The single-phase grounding monitoring system based on the power distribution network as claimed in claim 1, wherein the guide rollers are provided with a buffer rubber sleeve at the periphery.
5. The power distribution network-based single-phase grounding monitoring system as claimed in claim 1, wherein a first piston is disposed at a bottom portion of the first mounting cavity, a first piston shaft is disposed at a side of the first piston close to the first mounting plate, a second piston is disposed at a side of the first piston shaft close to the first mounting plate, the second piston is fixed on the first mounting plate, a first spring is disposed between the first piston and the second piston, and the first spring is sleeved on an outer periphery of the first piston shaft.
6. The power distribution network-based single-phase grounding monitoring system as claimed in claim 1, wherein the second pillar magnetic bottle is provided with a pair of second mounting plates symmetrically arranged in and relative to the slot, and the opposite sides of the second mounting plates are provided with conductive plates, and the conductive plates are connected with power connection wires.
7. The power distribution network-based single-phase grounding monitoring system of claim 6, wherein a third piston is disposed on a side of the second mounting plate adjacent to the conductive plate, and a second piston shaft is disposed on a side of the third piston adjacent to the conductive plate, and the second piston shaft is fixed to the conductive plate.
8. The distribution network-based single-phase grounding monitoring system as claimed in claim 7, wherein a second spring is disposed between the third piston and the conductive plate, and the second spring is sleeved on an outer circumference of a second piston shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885000.XA CN111999675B (en) | 2020-08-28 | 2020-08-28 | Single-phase grounding monitoring system based on power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885000.XA CN111999675B (en) | 2020-08-28 | 2020-08-28 | Single-phase grounding monitoring system based on power distribution network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111999675A CN111999675A (en) | 2020-11-27 |
| CN111999675B true CN111999675B (en) | 2023-03-21 |
Family
ID=73464532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010885000.XA Active CN111999675B (en) | 2020-08-28 | 2020-08-28 | Single-phase grounding monitoring system based on power distribution network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111999675B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2735526Y (en) * | 2004-08-19 | 2005-10-19 | 王若柏 | Outdoor high-voltage isolating switch |
| CN106655040A (en) * | 2017-02-21 | 2017-05-10 | 国网山东省电力公司邹城市供电公司 | High voltage transmission cable bracket system |
| CN209149559U (en) * | 2018-10-23 | 2019-07-23 | 中国铁路总公司 | A kind of wireless communication high iron catenary arrester on-line monitoring system |
| CN110308685A (en) * | 2019-07-05 | 2019-10-08 | 国家电网有限公司 | A kind of electric power overhaul working site monitoring equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7683798B2 (en) * | 2006-07-07 | 2010-03-23 | Ssi Power, Llc | Current monitoring device for high voltage electric power lines |
| WO2015172251A1 (en) * | 2014-05-14 | 2015-11-19 | Evolution Engineering Inc. | Apparatuses and methods for evaluating systems used in electromagnetic telemetry transmissions |
-
2020
- 2020-08-28 CN CN202010885000.XA patent/CN111999675B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2735526Y (en) * | 2004-08-19 | 2005-10-19 | 王若柏 | Outdoor high-voltage isolating switch |
| CN106655040A (en) * | 2017-02-21 | 2017-05-10 | 国网山东省电力公司邹城市供电公司 | High voltage transmission cable bracket system |
| CN209149559U (en) * | 2018-10-23 | 2019-07-23 | 中国铁路总公司 | A kind of wireless communication high iron catenary arrester on-line monitoring system |
| CN110308685A (en) * | 2019-07-05 | 2019-10-08 | 国家电网有限公司 | A kind of electric power overhaul working site monitoring equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111999675A (en) | 2020-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103425073B (en) | A kind of charging plug automatic telescopic control system | |
| CN2914301Y (en) | Three-station rotary type indoor high-voltage isolating switch | |
| CN203750741U (en) | Automatic spraying remote control robot for high-viscosity insulating paint of extrusion type overhead power transmission line | |
| CN111999675B (en) | Single-phase grounding monitoring system based on power distribution network | |
| CN206977717U (en) | A kind of wireless signal transfer base station for communication apparatus | |
| CN201444525U (en) | Rotary circuit connector for photoelectric slip ring | |
| CN203491604U (en) | High-voltage tension resistant insulator string auxiliary installation device | |
| CN103342286B (en) | Integrated monorail slide wire electricity taking mechanism | |
| CN202279582U (en) | High-voltage collector with cable reel | |
| CN201766276U (en) | Power supply device for glass fiber reinforced plastic anchor rod forming device | |
| CN208738987U (en) | A kind of servo motor of wireless control | |
| CN207711973U (en) | Electric signal transmission structure and safety seat | |
| CN217642625U (en) | On-line monitoring single-plate spacer | |
| CN202421406U (en) | Leakage current monitoring system of intelligent power transmission line insulator | |
| CN209240892U (en) | A kind of novel track train ring mill earthing or grounding means mounting structure | |
| CN203445048U (en) | Three-station double grounding load switch | |
| CN207677169U (en) | A kind of high pressure dual fiber connectors | |
| CN216672433U (en) | Be used for electric power design cable support | |
| CN206163120U (en) | Electric motor car loudspeaker device | |
| CN201226301Y (en) | Conductive connection structure for movable contact and main circuit of locomotive electric hollow contactor | |
| CN206281947U (en) | A kind of two-way prompting alarm of transformer station's fault | |
| CN220822187U (en) | Lightning arrester | |
| CN209904536U (en) | Pendulum type pantograph | |
| CN211943027U (en) | Tension adjusting device for railway power supply contact net | |
| CN107344508A (en) | A kind of mobile charging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |