CN114362051B - Combined lower house line lap joint device - Google Patents
Combined lower house line lap joint device Download PDFInfo
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- CN114362051B CN114362051B CN202110728795.8A CN202110728795A CN114362051B CN 114362051 B CN114362051 B CN 114362051B CN 202110728795 A CN202110728795 A CN 202110728795A CN 114362051 B CN114362051 B CN 114362051B
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- wiring board
- end wiring
- house
- line
- lapping plate
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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
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
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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
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
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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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/18—Devices affording mechanical protection in the event of breakage of a line or cable, e.g. net for catching broken lines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses a combined lower house line lapping device which comprises a lower end lapping plate, an upper end lapping plate, a fixed plate and a fixed buckle, wherein the upper end lapping plate is arranged at the upper end of the lower end lapping plate, the fixed plate is respectively connected to the inner surfaces of the lower end lapping plate and the upper end lapping plate, and the lower end lapping plate and the upper end lapping plate are clamped through threads at two sides by the fixed buckle. This combination formula house conductor overlap joint device carries out the overlap joint of house conductor down with the mode of copper sheet parcel, make overlap joint resistance diminish, avoid the wire to generate heat, cause the possibility that the overlap joint burns out, adopt the upper end for being qualified for the next round of competitions, the lower extreme is the mode inlet wire overlap joint of inlet wire, the condition that the electric energy meter was burnt out in the house conductor infiltration down of solution that this mode can be fine, be equipped with house conductor protection lock down, can not make house conductor down drop on the ground, avoid the emergence of safety problem, according to overhead line three-phase, evenly distributed ports such as zero line, so that the quantity of adaptation overlap joint user such as better.
Description
Technical Field
The invention relates to the technical field of power equipment installation and operation and maintenance technology and cable lapping, in particular to a combined lower house line lapping device.
Background
In the daily operation and maintenance process of the power distribution network, the operation, maintenance and treatment times of the lower household line are more, and the lower household line is directly wound on the overhead line lap joint point under most conditions when the lower household line is lapped in many times.
The lap joint mode can not effectively enable the overhead line to be in complete contact with the lower subscriber line, the contact area of the overhead line and the lower subscriber line is large when the overhead line is seen to be wound from the surface, a plurality of gaps exist in actual internal contact basically, the lap joint point is easy to loosen after long-term operation, and the possibility of burning out is caused.
Disclosure of Invention
The present invention aims to provide a combined lower house line lap joint device to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a modular house lead bridging device down, includes lower extreme wiring board, upper end wiring board, fixed plate and fixed buckle, the upper end wiring board is installed in the upper end of lower extreme wiring board, the fixed plate is connected respectively in the internal surface of lower extreme wiring board and upper end wiring board, fixed buckle passes through both sides screw thread joint with lower extreme wiring board and upper end wiring board.
Further, an overhead line interface is arranged on the surface of the lower end wiring board, a lower end fixing port is arranged on the inner side of the lower end wiring board, upper fastening ports are arranged at the upper end and the lower end of the lower end wiring board, and the upper fastening ports and the lower fastening ports are connected to the inner fixing plate through bolts.
Furthermore, the upper surface of the upper end lapping plate is provided with a lower subscriber line interface, the inner side of the upper end lapping plate is provided with an upper fixed port, the upper end lapping plate is integrally provided with reserved seams which are distributed uniformly at 120 degrees and are reserved in a separated state.
Further, both ends have been seted up about the fixed plate and have all been link up the device connector, the inboard of fixed plate is seted up and is had interior fixed port, totally six places, evenly distributed, the dead lever is inside to be connected in the pole, and this part is fixed in the pole, arranges overhead line and lower house line.
Furthermore, the fixing buckles are distributed on the inner side and the outer side of the lower end wiring board and the upper end wiring board, the fixing buckles on the two sides are in threaded connection through screws, the fixing buckles are made of copper sheets, the copper sheet buckles clamp the upper wiring board and the lower wiring board, and the contact area of the copper sheet buckles is increased.
Furthermore, an overhead line is inserted into the overhead line interface, and a lower household line is inserted into the lower household line interface, so that the lower household line at the upper end can prevent rainwater from permeating into the electric energy meter through the lower household line in a height difference state.
Further, every lower house wire kneck fixedly connected with down house wire protection lock of seting up of upper end lapping plate, house wire protection lock includes grip block, grip block and rubber spring down, it is hard rubber to go up the grip block material, goes up the inside through wires hole of having seted up of grip block, through wires hole inner wall dull polish is handled, and whole internal diameter is greater than house wire external diameter 0.5 mm down, the grip block material is the stainless steel down, fixed connection is in every house wire kneck down of upper end lapping plate, rubber spring coupling is in last grip block and the centre gripping plate down in the middle of, circumference evenly distributed, and installation protection lock when preventing the device house wire disconnection down, the protection lock plays the risk of falling, goes up the grip block dull polish and handles, increases the frictional force of inner wall, makes house wire and grip block inner wall combination more fasten down.
Furthermore, the upper fastening opening and the device connecting opening are in threaded connection by adopting self-tapping screws, the self-tapping screws are completely screwed into the threaded holes, the two sides of the upper fastening opening and the device connecting opening are not protruded, the self-tapping screws are used and are not separated by nuts, and the upper fastening opening and the device connecting opening can be well prevented from being scratched or short-circuited by the protruded parts when overhead wires or lower house wires pass through.
Further, fixed buckle material is 304 light stainless steel, the fixed buckle inboard is provided with the blotter, and the material is the PVC thin slice, fixed buckle internal connection's screw material is 316L stainless steel, and the threaded surface scribbles water proof coating, sets up the blotter, reduces to the wearing and tearing between the fixed buckle, and extension life scribbles water proof coating and prevents that the screw from rusting under the erosion of rainwater, influences the result of use of screw.
Compared with the prior art, the invention has the beneficial effects that:
1. the device adopts the mode of copper sheet parcel to carry out the overlap joint of house line down, makes overlap joint resistance diminish, and it is less to appear the not hard up possibility of overlap joint, avoids the wire because not hard up generating heat that brings, causes the possibility that the overlap joint burns out.
2. The device adopts the mode inlet wire overlap joint that the upper end is being qualified for the next round of competitions, and the lower extreme is the inlet wire, and this mode can avoid the condition that the house lead infiltration burns out the electric energy meter down, promotes the security.
3. The device evenly distributes ports according to an overhead line A phase, a B phase, a C phase, a zero line and the like, and the upper end of a lower household line device is provided with 6 ports (3 groups of outgoing lines), 12 ports (6 groups of outgoing lines), 18 ports (9 groups of outgoing lines), 24 ports (12 groups of outgoing lines) and the like, so that the device can better adapt to the number of users at a lap joint point, and the three-phase load imbalance can be better adjusted by three-phase even lap joint.
4. Each lower house outlet of the device is provided with a lower house wire protection lock, when a lower house wire is burnt out and falls off, the protection device can lead the lower house wire to fall for a distance, but can not lead the lower house wire to fall on the ground, thus effectively avoiding other safety problems.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic elevational view of the present invention;
FIG. 2 is a right-view structural diagram of the present invention;
FIG. 3 is a schematic view of a lower end patch panel structure according to the present invention;
FIG. 4 is a schematic view of the structure of the upper end patch panel of the present invention;
fig. 5 is a schematic view of the fixing plate of the present invention.
In the figure: 1. a lower end wiring board; 2. an upper end wiring board; 3. a fixing plate; 4. fixing the buckle; 5. a screw; 6. an overhead line; 7. A user line is laid; 8. a lower house line protection lock; 101. an overhead line interface; 102. a lower end fixing port; 103. an upper fastening port; 201. a drop line interface; 202. an upper fixed port; 203. reserving a seam; 301. a device connector; 302. an internal fixation port.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in the drawing, a modular house line bridging device under this embodiment, including lower extreme wiring board 1, upper end wiring board 2, fixed plate 3 and fixed buckle 4, upper end wiring board 2 is installed in the upper end of lower extreme wiring board 1, fixed plate 3 connects respectively in the internal surface of lower extreme wiring board 1 and upper end wiring board 2, fixed buckle 4 passes through both sides screw thread joint with lower extreme wiring board 1 and upper end wiring board 2, both ends have seted up device connector 301 about fixed plate 3 and have all link up, internal fixation port 302 has been seted up to the inboard of fixed plate 3, totally six, evenly distributed, the dead lever is inside to be connected in the pole, fixed buckle 4 distributes in the inside and outside both sides of lower extreme wiring board 1 and upper end wiring board 2, both sides are fixed buckle 4 with screw rod 5 threaded connection, fixed buckle 4's material is the copper sheet, adopt the mode of copper sheet parcel to carry out the overlap joint of house line 7, make lap joint resistance diminish, the possibility that lap joint point is not hard up appears is less, avoid the wire because the not hard up generating heat that brings, cause the fixed buckle to burn out the possibility, fixed buckle material is 304 light stainless steel, the inboard is provided with the thin slice, the material of fixed buckle is the stainless steel of screw thread, the material of stainless steel that the screw thread is L corrosion of stainless steel that the waterproof coating can not influence on the rainwater effect under the rainwater, the screw that the use of screw that the screw effect that the rainwater that the screw that the rainwater that the rust can not influence.
An overhead line interface 101 is arranged on the surface of a lower end wiring board 1, a lower end fixing port 102 is arranged on the inner side of the lower end wiring board 1, upper fastening ports 103 are arranged at the upper end and the lower end of the lower end wiring board 1, an overhead line 6 is inserted into the overhead line interface 101, a lower house line 7 is inserted into a lower house line interface 201, the upper end is an outgoing line, the lower end is an incoming line for overlapping, the problem that rainwater on the overhead line 6 passes through a lap joint of the lower house line 7, flows to the lap joint of the incoming line rapidly along the surface of the lower house line 7 and a wire core, and flows into an electric energy meter through the lap joint of the user line is avoided, the adverse condition that rainwater drops at a dripping bend under the action of gravity from the surface of an insulating layer of the lower house line 7 to the surface of the rainwater, and the rainwater in a gap between the twisted wire cores and between the insulating layer and the wire core crosses the dripping bend to enter the electric energy meter under the action of capillary siphon is caused, and the internal circuit of the electric energy meter is short-damaged, and the electric energy meter is uniformly distributed according to the overhead line A phase, B phase, the zero line and other phase ports; the appearance ports at the upper end of the lower subscriber line device are set to be 6 ports (3 groups of outgoing lines), 12 ports (6 groups of outgoing lines), 18 ports (9 groups of outgoing lines), 24 ports (12 groups of outgoing lines) and the like, so that the number of users at the lap joint points can be better adapted; the user can better realize the adjustment of three-phase load unbalance by uniformly overlapping three phases; the lower end of the lower house wire 7 is lapped with the overhead wire 6, the situations that a lap joint is formed on the overhead wire 6 or the lower house wire 7 is repeatedly wound and lapped at the same point in the later period are avoided, the overhead wire 6 is preferably lapped with outgoing wires in the same group in a close mode, the lower house wire 7 is lapped with the outgoing wires in the same group in a close mode, the contact area of the lap joint of the overhead wire 6 and the lower house wire 7 is large enough, the resistance of the lap joint is smaller when the lap joint area is larger according to the resistance formula R = L/S, the possibility that the lap joint is loosened is low, heating caused by loosening of a conducting wire is avoided, the upper fastening port 103 and the device connecting port 301 are in threaded connection through self-tapping screws, the self-tapping screws are completely screwed into threaded holes, the two sides of the self-tapping screws are not protruded, and nut blocking is avoided, and the phenomenon that the protruded parts scratch or short circuit the lower house wire 6 or the lower house wire 7 passes through can be avoided well.
Lower house lead interface 201 has been seted up to upper end wiring board 2 upper surface, fixed port 202 has been seted up to the inboard of upper end wiring board 2, upper end wiring board 2 has wholly been seted up and has been reserved seam 203, totally three places, be 120 jiaos evenly distributed, every lower house lead interface 201 fixedly connected with lower house lead protection lock 8 of seting up of upper end wiring board 2, lower house lead protection lock 8 includes stereoplasm rubber slab and rubber spring, lower house lead outlet all is equipped with lower house lead protection lock 8, when lower house lead 7 burns out and drops, this protection device can make lower house lead 7 one section distance that drops, nevertheless can not make lower house lead 7 drop on the ground, can avoid other safety problems to all take place effectively.
The working principle is as follows: when the combined type house line lapping device is used, internal screws of a lower end lapping plate 1 and an upper end lapping plate 2 are loosened to enable the lower end lapping plate 1 and the upper end lapping plate 2 to be in a separated state, then fixing plates 3 at the upper end and the lower end are sleeved into an electric pole for fixing, further, the lower end lapping plate 1 and the upper end lapping plate 2 in the separated state are respectively sleeved on the outer sides of the fixing plates 3, an upper fixing port 103 and a device connecting port 301 are in threaded connection by adopting self-tapping screws, the self-tapping screws are completely screwed into threaded holes, two sides are not protruded, the self-tapping screws are used, no nut separation is caused, and the phenomenon that the protruding parts scratch or short circuit the overhead line 6 or the house line 7 when the overhead line or the house line passes through can be avoided, the upper end wiring board 2 is positioned at the upper end of the lower end wiring board 1 and is fixed through a fixing buckle 4, the fixing buckle 4 is made of 304 light stainless steel, a buffer cushion 401 is arranged on the inner side of the fixing buckle 4 and made of PVC thin sheets, a screw connected inside the fixing buckle 4 is made of 316L stainless steel, waterproof paint is coated on the surface of a thread, the buffer cushion 401 is arranged, abrasion between the fixing buckle 4 is reduced, the service life is prolonged, the waterproof paint is coated to prevent the screw from rusting under the erosion of rainwater and influence the using effect of the screw, and further ports are evenly distributed according to an overhead line A phase, a B phase, a C phase, a zero line and the like; the upper end of the lower household wire device is provided with 6 ports (3 groups of outgoing wires), 12 ports (6 groups of outgoing wires), 18 ports (9 groups of outgoing wires), 24 ports (12 groups of outgoing wires) and the like, a three-phase overhead wire or a zero line of a source port is inserted into an overhead wire interface 101 in a lower end wiring board 1, a lower household wire 7 connected with a user electric meter is inserted into a lower household wire interface 201 in an upper end wiring board 2, in the lapping process of the overhead wire 6 and the lower household wire 7, the overhead wire 6 is preferentially lapped with the outgoing wires in the same group, the lower household wire 7 is lapped with the outgoing wires in the same group, the contact area of the lapping part of the overhead wire 6 and the lower household wire 7 is large enough, according to a resistance formula R = L/S, when the lapping point contact area is large, the resistance of the lapping point is small, the possibility of loosening of the lapping point is low, and heating caused by loosening of the conducting wires is avoided, the possibility of burning out the lap joint is caused, a lower house line protection lock 8 is fixedly connected to each lower house line interface 201 arranged on the upper end lap joint plate 2, the lower house line protection lock 8 comprises an upper clamping plate 801, a lower clamping plate 802 and a rubber spring 803, the upper clamping plate 801 is made of hard rubber, a threading hole is arranged in the upper clamping plate, the inner wall of the threading hole is subjected to frosting treatment, the whole inner diameter is larger than the outer diameter (larger than 0.5 mm in the embodiment) of the lower house line 7, the lower clamping plate 802 is made of stainless steel and is fixedly connected to each lower house line interface 201 of the upper end lap joint plate 2, the rubber spring 803 is connected between the upper clamping plate 801 and the lower clamping plate 802, the circumference is uniformly distributed, the protection lock is installed, when the lower house line 7 of the device is disconnected, the protection lock is prevented from falling, the upper clamping plate is subjected to frosting treatment, the friction force of the inner wall is increased, the lower subscriber line 7 is combined with the inner wall of the clamping plate more firmly.
In the description of the present invention, it should be understood that the terms "longitudinal", "length", "circumferential", "front", "back", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have the orientation or positional relationship shown in the drawings
And is constructed and operative in a particular orientation and therefore should not be construed as limiting the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically, electrically or otherwise in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make variations, modifications, substitutions and alterations within the scope of the present invention without departing from the spirit and scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a modular house line bridging device down, includes lower extreme wiring board (1), upper end wiring board (2), fixed plate (3) and fixed buckle (4), its characterized in that: the upper end wiring board (2) is arranged at the upper end of the lower end wiring board (1), the fixing plate (3) is respectively connected to the inner surfaces of the lower end wiring board (1) and the upper end wiring board (2), and the lower end wiring board (1) and the upper end wiring board (2) are clamped and connected through threads on two sides by the fixing buckle (4); an overhead line interface (101) is formed in the surface of the lower end wiring board (1), a lower end fixing port (102) is formed in the inner side of the lower end wiring board (1), and upper fastening ports (103) are formed in the upper end and the lower end of the lower end wiring board (1); the upper surface of the upper end wiring board (2) is provided with a lower subscriber line interface (201), the inner side of the upper end wiring board (2) is provided with an upper fixed port (202), and the upper end wiring board (2) is integrally provided with a reserved seam (203); lower house lead interface (201) department fixedly connected with that upper end wiring board (2) every was seted up is house lead protection lock (8) down, house lead protection lock (8) down includes grip block (801), grip block (802) and rubber spring (803) down, it is the ebonite to go up grip block (801) material, goes up the inside through wires hole of having seted up of grip block, through wires hole inner wall dull polish is handled, and whole internal diameter is greater than house lead (7) external diameter down, fixed connection in every house lead interface department under upper end wiring board (2), rubber spring (803) are connected in the middle of last grip block (801) and grip block (802) down, circumference evenly distributed.
2. The modular drop line splicing apparatus of claim 1 wherein: the reserved seams (203) are arranged at three positions and are uniformly distributed at an angle of 120 degrees.
3. The modular drop line splicing apparatus of claim 1 wherein: the device connector (301) that link up has all been seted up at both ends about fixed plate (3), internal fixation port (302) have been seted up to the inboard of fixed plate (3), totally six and evenly distributed, the fixed plate is inside to be used for being connected with the pole.
4. The modular drop line splicing apparatus of claim 1 wherein: the fixing buckles (4) are distributed on the inner side and the outer side of the lower end wiring board (1) and the upper end wiring board (2), and the fixing buckles (4) on the two sides are in threaded connection through the screw (5).
5. The modular drop line splicing apparatus of claim 1 wherein: an overhead line (6) is inserted into the overhead line interface (101), and a lower subscriber line (7) is inserted into the lower subscriber line interface (201).
6. The modular drop line splicing apparatus of claim 1 wherein: the upper fastening opening (103) and the device connecting opening (301) are in threaded connection by self-tapping screws which are completely screwed into the threaded holes and do not protrude from the two sides.
7. The modular drop line splicing apparatus of claim 1 wherein: the fixing buckle (4) is made of 304 light stainless steel, and a cushion pad (401) is arranged on the inner side of the fixing buckle (4).
8. The modular drop line splicing apparatus of claim 1 wherein: the screw material of fixed buckle (4) internal connection is 316L stainless steel, and the screw surface scribbles waterproof coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110728795.8A CN114362051B (en) | 2021-06-29 | 2021-06-29 | Combined lower house line lap joint device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110728795.8A CN114362051B (en) | 2021-06-29 | 2021-06-29 | Combined lower house line lap joint device |
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| CN114362051A CN114362051A (en) | 2022-04-15 |
| CN114362051B true CN114362051B (en) | 2023-03-28 |
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| CN212303946U (en) * | 2020-03-10 | 2021-01-05 | 浙江正远电力装备有限公司 | Lightning protection grounding wire clamp for overhead conductor |
| CN213013872U (en) * | 2020-07-21 | 2021-04-20 | 张�杰 | Road bridge transition lap joint plate device |
| CN212884381U (en) * | 2020-07-29 | 2021-04-06 | 杭州颂光者科技有限公司 | Clamping device is used in machining of bowl of convenient drilling |
| CN213213033U (en) * | 2020-10-20 | 2021-05-14 | 黄琨 | Network cable protector for computer communication |
| CN112165030A (en) * | 2020-10-29 | 2021-01-01 | 国网河北省电力有限公司沧州供电分公司 | Vertical arrangement type double-suspension vertical wire clamp temporary protection device and pin supplementing pretreatment method |
| CN214013830U (en) * | 2020-12-26 | 2021-08-20 | 广东恒阳建设工程有限公司 | Overhead line wire fixing structure |
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| CN114362051A (en) | 2022-04-15 |
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