CN113363868B - Exempt from to ascend a height grounding box - Google Patents
Exempt from to ascend a height grounding box Download PDFInfo
- Publication number
- CN113363868B CN113363868B CN202110709569.5A CN202110709569A CN113363868B CN 113363868 B CN113363868 B CN 113363868B CN 202110709569 A CN202110709569 A CN 202110709569A CN 113363868 B CN113363868 B CN 113363868B
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- Prior art keywords
- cable
- grounding
- box body
- winding device
- connecting cable
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/70—Other constructional features of yarn-winding machines
- B65H54/72—Framework; Casings; Coverings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a climbing-free grounding box, and belongs to the technical field of power systems. The ascending-free grounding box comprises a cable winding device and a lifting assembly, wherein the cable winding device comprises a winding mechanism and a connecting cable wound on the winding mechanism, one end of the connecting cable is connected with an overhead line, and the other end of the connecting cable is provided with a grounding connector; the cable winding device is arranged on the lifting assembly and used for adjusting the height of the cable winding device; the ground connector is configured to be plugged into a ground cable for electrical conduction. The cable winding device is only required to be lowered by the lifting assembly, and the connecting cable is connected with the grounding cable through the grounding connector, so that the overhead line is grounded, the grounding danger coefficient is reduced, the installation and removal time is shortened, and the construction and maintenance speed is increased; and accessible lifting unit rises the connection cable on with the cable coiling mechanism back-height place after accomplishing the operation to avoid passerby to take place to electrocute when passing, improve the security.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to an ascending-free grounding box.
Background
Live working is an important means and method for detecting, overhauling, maintaining and transforming power grid equipment, and is an important technical measure for ensuring the reliable and stable operation of a power system.
At present, the power grid is overhauled, a power supply system is generally closed, then high-altitude operation is carried out by electric power personnel, and the possibility that the power grid is still electrified even if the power supply system is closed due to the fact that the phenomenon of power supply reversal exists on the power grid is caused. The safety operation requirement is as follows: this part of the current needs to be conducted to ground, so the importance of grounding is self evident.
When an overhead line is grounded at present, an electric pole needs to be climbed to hang and establish a grounding wire, so that the line is grounded. The grounding point is generally additionally provided with a grounding hanging ring or is directly grounded on a bare conductor. The ground point on the current line is generally about 10 meters away from the ground. When climbing the pole, the user needs to drag a heavy grounding hanging ring to climb, so that the physical consumption of workers is large, and the danger coefficient is large; and the installation and the removal of the grounding wire are completed once, the time is required to be about 1 hour, the time and the labor are wasted, and the influence on the construction and maintenance speed is great.
Therefore, it is desirable to provide an ascending-free grounding box to solve the above problems.
Disclosure of Invention
The invention aims to provide the climbing-free grounding box, so that workers can ground an overhead line without climbing, the grounding danger coefficient is reduced, the installation and dismantling time is short, and the construction and maintenance speed is increased.
In order to realize the purpose, the following technical scheme is provided:
an ascending-free grounding box comprises:
the cable winding device comprises a winding mechanism and a connecting cable wound on the winding mechanism, wherein one end of the connecting cable is connected with the overhead line, and the other end of the connecting cable is provided with a grounding connector;
the cable winding device is arranged on the lifting assembly and used for adjusting the height of the cable winding device;
the ground connector is configured to be plugged into a ground cable for electrical conduction.
As the alternative of exempting from to ascend a height ground connection case, still include the case body, first wiring hole has been seted up at case body top, winding mechanism set up in the case body, the connecting cable passes first wiring hole with overhead line connects, the connecting cable is in the position department cover in first wiring hole is equipped with waterproof tapered protective sheath.
As an alternative scheme of the climbing-free grounding box, a second wiring hole is formed in the bottom of the box body, the grounding cable penetrates through the second wiring hole and is located at one end in the box body, a grounding wire clamp is arranged at the other end of the grounding cable, and the grounding connector can be connected with the grounding wire clamp in an inserting mode.
As the alternative of exempting from to ascend a height ground connection case, the connecting cable includes first section and second section, winding mechanism includes that the winding drum, insulating drive change roller and electrically conductive connection roller, the fixed cover of winding drum is located on the insulating drive changes the roller, insulating drive changes the fixed cover of roller and locates on the electrically conductive connection roller, the one end of first section is passed in proper order the winding drum with insulating drive changes the roller with electrically conductive connection roller electricity is connected, the other end and the overhead line of first section are connected, the one end of second section rotate set up in electrically conductive connection roller, the other end of second section is provided with ground connection connects.
As an alternative of the climbing-free grounding box, a threaded groove is spirally wound on the outer wall of the winding drum, and the connecting cable is partially accommodated in the threaded groove.
As an alternative of the climbing-free grounding box, a plurality of heat dissipation holes are formed in the outer wall of the winding drum in a penetrating mode.
As an alternative of the climbing-free grounding box, the lifting assembly comprises a transmission chain arranged in the vertical direction and a mounting plate arranged in the transmission chain in the horizontal direction, and the box body is mounted on the transmission chain through the mounting plate.
As an alternative of the climbing-free grounding box, the lifting assembly further comprises a limiting plate, the limiting plate and the mounting plate are arranged on the transmission chain at intervals in parallel, and the box body is clamped between the limiting plate and the mounting plate.
As an alternative of the climbing-free grounding box, the transmission chain is made of rubber.
As an alternative scheme of the climbing-free grounding box, the climbing-free grounding box further comprises a warning lamp, and the warning lamp is electrically connected with the box body through a wire.
Compared with the prior art, the invention has the beneficial effects that:
according to the climbing-free grounding box provided by the invention, the cable winding device is arranged on the lifting assembly, so that the cable winding device can be lifted by a corresponding height according to the use requirement, and when an overhead line needs to be grounded, a worker can ground the overhead line without climbing a telegraph pole to hang a grounding wire. The cable winding device is only required to be lowered by utilizing the lifting assembly, and the connecting cable is connected with the grounding cable through the grounding connector, so that the overhead line is grounded, the grounding danger coefficient is reduced, the installation and dismantling time is shortened, and the construction and maintenance speed is increased; and the connecting cable on the cable winding device can be lifted to the high position through the lifting assembly after the operation is finished, so that the electric shock of passers-by is avoided, and the safety is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a sectional view of an ascending-free grounding box according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the ascending-free grounding box according to the embodiment of the present invention;
FIG. 3 is a cross-sectional view of a cable winder of an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a cable winding device in an embodiment of the present invention.
Reference numerals:
1. a cable take-up device; 2. a lifting assembly; 3. a tank body; 4. a ground cable; 5. a warning light; 6. a protective cover;
11. a winding mechanism; 111. winding the roll; 112. an insulation driving roller; 113. a conductive connection roller; 114. a threaded groove; 115. heat dissipation holes; 12. connecting a cable; 121. a ground connection;
21. a drive chain; 22. mounting a plate; 23. a limiting plate; 24. a mounting frame; 25. a driving gear; 26. a driven gear; 27. guiding the strip opening;
31. a first wiring hole; 32. a waterproof cone-shaped protective sleeve; 33. a grounding wire clamp.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In order that the staff need not to ascend a height and can carry out ground connection to overhead line, reduce the ground connection danger coefficient, and installation and demolition time are short, improve the construction and overhaul speed, this embodiment provides an exempt from to ascend a height grounding box, and the following combines fig. 1 to fig. 4 to carry out detailed description to the specific content of this embodiment.
As shown in fig. 1 and 2, the climbing-free grounding box includes a cable winding device 1 and a lifting assembly 2. The cable winding device 1 includes a winding mechanism 11 and a connection cable 12 wound around the winding mechanism 11, one end of the connection cable 12 is connected to the overhead line, and the other end is provided with a ground connector 121. The cable winding device 1 is disposed on the lifting assembly 2 for adjusting the height of the cable winding device 1, and the ground connector 121 is configured to be electrically connected to the ground cable 4.
In short, the climbing-free grounding box provided by the invention has the advantages that the cable winding device 1 is arranged on the lifting assembly 2, so that the cable winding device 1 can be lifted by a corresponding height according to the use requirement, and when an overhead line needs to be grounded, a worker can ground the overhead line without climbing a telegraph pole to hang a grounding wire. The cable winding device 1 is only required to be lowered by the lifting assembly 2, and the connecting cable 12 is connected with the grounding cable 4 through the grounding connector 121, so that the overhead line is grounded, the grounding danger coefficient is reduced, the installation and removal time is shortened, and the construction and maintenance speed is increased; and the accessible lifting unit 2 rises the connection cable 12 on the cable coiling mechanism 1 back to the eminence after accomplishing the operation to avoid passerby to take place to electrocute when passing, improve the security.
Further, as shown in fig. 2, the climbing-free grounding box further comprises a box body 3, a first wiring hole 31 is formed in the top of the box body 3, the winding mechanism 11 is arranged in the box body 3, the connecting cable 12 penetrates through the first wiring hole 31 to be connected with an overhead line, the connecting cable 12 is sleeved with a waterproof conical protective sleeve 32 at the position of the first wiring hole 31, the inside of the box body 3 is guaranteed to be dry, and rainwater is prevented from entering the box body 3 through the first wiring hole 31 to cause short circuit. Specifically, in this embodiment, the box body 3 is provided on the lifting assembly 2, so that the box body 3 can be lifted as required.
Further, the second wiring hole has been seted up to case body 3 bottom, and the one end that ground connection cable 4 passed the second wiring hole and was located case body 3 is provided with ground clamp 33, and the other end and the ground connection of ground connection cable 4 connect, and ground connection joint 121 can peg graft with ground clamp 33. The ground connection that sets up connects 121 and the cooperation of earth clamp 33, and the installation is short with the demolish time, reduces the influence to construction maintenance speed.
Further, as shown in fig. 1 to 3, the connection cable 12 includes a first section and a second section, the winding mechanism 11 includes a winding drum 111, an insulating driving roller 112 and a conductive connection roller 113, the winding drum 111 is fixedly sleeved on the insulating driving roller 112, the insulating driving roller 112 is fixedly sleeved on the conductive connection roller 113, one end of the first section sequentially penetrates through the winding drum 111 and the insulating driving roller 112 to be electrically connected with the conductive connection roller 113, the other end of the first section is connected with an overhead line, one end of the second section is rotatably arranged on the conductive connection roller 113, and the other end of the second section is provided with a grounding connector 121. The power source of cable rolling in this embodiment can adopt current ordinary driving motor, and ordinary driving motor is connected with insulating drive commentaries on classics roller 112 transmission.
In addition, because the insulating driving rotating roller 112 is made of insulating materials, the conductive connecting roller 113 is sleeved in the insulating driving rotating roller 112, the situation that the cable winding device 1 is electrified can be avoided after the grounding connector 121 is connected with the grounding wire clamp 33, current is transmitted to the cable winding device 1 through the conductive connecting roller 113, meanwhile, the second section of the connecting cable 12 is connected with the connecting part of the conductive connecting roller 113 through the connecting part, the second section of the connecting cable 12 can be always kept connected with the conductive connecting roller 113 in the rotation process of the winding drum 111, and therefore the grounding cable 4 can always keep electric communication with an overhead line. Meanwhile, in order to prevent the second section of the connection cable 12 from being exposed to the connection portion of the conductive connection roller 113, a protective cover 6 may be provided at the connection portion for isolation to prevent electric shock.
Further, as shown in fig. 4, in order to facilitate the winding of the connection cable 12 by the winding drum 111 and avoid the connection cable 12 from winding around the winding drum 111, a threaded groove 114 is spirally wound on the outer wall of the winding drum 111, the connection cable 12 is partially received in the threaded groove 114, and the connection cable 12 will be located in the threaded groove 114 and will not wind around each other during winding.
Further, because the connecting cable 12 will generate heat when in use, and in order to avoid the connecting cable 12 to fuse, a plurality of heat dissipation holes 115 are cut through on the outer wall of the winding drum 111 to dissipate the heat generated by the connecting cable 12 during operation, thereby avoiding the heat from gathering and leading to the connecting cable 12 to melt.
Further, as shown in fig. 1. The lifting assembly 2 comprises a transmission chain 21 arranged along the vertical direction and a mounting plate 22 arranged on the transmission chain 21 along the horizontal direction, and the box body 3 is mounted on the transmission chain 21 through the mounting plate 22. Furthermore, the lifting assembly 2 further comprises a limiting plate 23, the limiting plate 23 and the mounting plate 22 are arranged on the transmission chain 21 at intervals in parallel, and the box body 3 is clamped between the limiting plate 23 and the mounting plate 22 to prevent the box body 3 from falling.
Specifically, lifting unit 2 still includes mounting bracket 24, the driving gear 25, driven gear 26, guide rectangular mouth 27 and lift driving motor, the concave mounting groove that is equipped with of mounting bracket 24, driving gear 25 and driven gear 26 rotate and set up in the mounting groove, one side that the mounting groove is close to cable coiling mechanism 1 is provided with guide rectangular mouth 27, driving gear 25 sets up in driven gear 26 top, install respectively on driving gear 25 and driven gear 26 at the both ends of driving chain 21, the drive end at lift driving motor is installed to driving gear 25, the one end that driving chain 21 was kept away from to mounting panel 22 stretches out guide rectangular mouth 27, case body 3 is installed on mounting panel 22.
Further, in order to avoid the electric current from being conducted to the mounting frame 24 of the lifting assembly 2 when the box body 3 leaks electricity, the transmission chain 21 is made of rubber. In addition, the surface of the box body 3 is adhered with a rubber layer, so that the anti-creeping effect of the box body 3 can be effectively improved.
Further, in order to avoid the electric leakage condition, the case body 3 is opened to the staff mistake, exempts from to ascend a height ground connection case still includes the warning assembly, and the warning assembly includes warning light 5 and wire, and warning light 5 passes through the wire and is connected with 3 electricity of case body. When 3 electric leakages of case body, the electric current will enter into warning light 5 through case body 3 in, for the power supply of warning light 5 for warning light 5 shines, thereby reminds staff case body 3 to appear the electric leakage phenomenon.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (7)
1. The utility model provides an exempt from to ascend a height grounding box which characterized in that includes:
the cable winding device (1) comprises a winding mechanism (11) and a connecting cable (12) wound on the winding mechanism (11), wherein one end of the connecting cable (12) is connected with an overhead line, and the other end of the connecting cable is provided with a grounding connector (121);
the lifting assembly (2), the cable winding device (1) is arranged on the lifting assembly (2) and is used for adjusting the height of the cable winding device (1);
the grounding connector (121) is configured to be plugged and conducted with a grounding cable (4);
the winding device is characterized by further comprising a box body (3), a first wiring hole (31) is formed in the top of the box body (3), the winding mechanism (11) is arranged in the box body (3), the connecting cable (12) penetrates through the first wiring hole (31) to be connected with the overhead line, and a waterproof conical protective sleeve (32) is sleeved on the connecting cable (12) at the position of the first wiring hole (31);
a second wiring hole is formed in the bottom of the box body (3), the grounding cable (4) penetrates through the second wiring hole, a grounding wire clamp (33) is arranged at one end in the box body (3), the other end of the grounding cable (4) is connected with the ground, and the grounding joint (121) can be plugged with the grounding wire clamp (33);
connecting cable (12) includes first section and second section, winding mechanism (11) are including receipts reel (111), insulating drive commentaries on classics roller (112) and electrically conductive connection roller (113), receipts reel (111) is fixed to be located insulating drive commentaries on classics roller (112) is last, insulating drive commentaries on classics roller (112) fixed cover is located electrically conductive connection roller (113) are last, the one end of first section is passed in proper order receipts reel (111) with insulating drive commentaries on classics roller (112) with electrically conductive connection roller (113) electricity is connected, the other end and the overhead line of first section are connected, the one end of second section rotate set up in electrically conductive connection roller (113), the other end of second section is provided with ground connection (121).
2. The climbing-free grounding box of claim 1, wherein the outer wall of the winding drum (111) is spirally wound with a threaded groove (114), and the connecting cable (12) is partially received in the threaded groove (114).
3. The climbing-free grounding box of claim 1, wherein a plurality of heat dissipation holes (115) are formed through the outer wall of the winding drum (111).
4. An ascending exempt grounding box according to claim 1, characterized in that the lifting assembly (2) comprises a transmission chain (21) arranged along a vertical direction and a mounting plate (22) arranged along a horizontal direction on the transmission chain (21), the box body (3) being mounted on the transmission chain (21) through the mounting plate (22).
5. The climbing-free grounding box according to claim 4, wherein the lifting assembly (2) further comprises a limiting plate (23), the limiting plate (23) and the mounting plate (22) are arranged on the transmission chain (21) in parallel at intervals, and the box body (3) is clamped between the limiting plate (23) and the mounting plate (22).
6. An ascending-free grounding box according to claim 4, wherein the transmission chain (21) is made of rubber.
7. An ascending-free grounding box according to claim 1, characterized in that it further comprises a warning light (5), wherein the warning light (5) is electrically connected with the box body (3) through a wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110709569.5A CN113363868B (en) | 2021-06-25 | 2021-06-25 | Exempt from to ascend a height grounding box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110709569.5A CN113363868B (en) | 2021-06-25 | 2021-06-25 | Exempt from to ascend a height grounding box |
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| Publication Number | Publication Date |
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| CN113363868A CN113363868A (en) | 2021-09-07 |
| CN113363868B true CN113363868B (en) | 2022-06-03 |
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| CN202110709569.5A Active CN113363868B (en) | 2021-06-25 | 2021-06-25 | Exempt from to ascend a height grounding box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115360608B (en) * | 2022-10-19 | 2023-02-03 | 安徽中鑫继远信息技术股份有限公司 | FTU feeder terminal of high resistant performance of outdoor use |
| CN117317681B (en) * | 2023-11-23 | 2024-02-20 | 中规院城市更新(山东)有限公司 | Outdoor building wall-mounted comprehensive rainproof waterproof wiring connection device |
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| CN213484445U (en) * | 2020-10-20 | 2021-06-18 | 保定市新思达电气科技有限公司 | Cable grounding box |
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|---|---|---|---|---|
| CN87107056A (en) * | 1986-10-22 | 1988-06-15 | 株式会社日立制作所 | Hydraulic hoist |
| JPH05199629A (en) * | 1992-01-14 | 1993-08-06 | Fujikura Ltd | Working system for overhead distribution line |
| JPH08306405A (en) * | 1995-05-10 | 1996-11-22 | Tatsuta Electric Wire & Cable Co Ltd | Leading down connection structure of grounding line in pole |
| JPH118924A (en) * | 1997-04-25 | 1999-01-12 | Mirai Ind Co Ltd | Pole for wiring, pole device, cable cover member, and box-attaching member |
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| CN113363868A (en) | 2021-09-07 |
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