CN107859417B - Composite insulating cross arm - Google Patents
Composite insulating cross arm Download PDFInfo
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- CN107859417B CN107859417B CN201711192229.XA CN201711192229A CN107859417B CN 107859417 B CN107859417 B CN 107859417B CN 201711192229 A CN201711192229 A CN 201711192229A CN 107859417 B CN107859417 B CN 107859417B
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- arc
- rotating shaft
- hardware fitting
- cylindrical
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention discloses a composite insulating cross arm which comprises a core rod, wherein the core rod is of a cylindrical structure, and a rubber sheath is arranged on the outer surface of the core rod; the two ends of the core rod are provided with a cylindrical clamp in compression joint; one end of the cylindrical clamp is provided with a cavity which is matched and sleeved with the core rod, and the other end of the cylindrical clamp is closed; the side wall of the closed end of one of the cylindrical clamps is provided with a first connecting hardware fitting fixedly connected with the closed end of the one of the cylindrical clamps, the middle part of the first connecting hardware fitting is provided with an elliptical through hole, and the middle part of the top end of the first connecting hardware fitting is provided with an arc-shaped groove; two sides of the top are provided with lugs, and one lug side wall is fixedly connected with the cylinder clamp; the side wall of the closed end of the other cylindrical clamp is fixedly connected with one end of a second connecting hardware fitting; the second connecting hardware fitting is integrally in an inwards concave arc cylindrical shape, and the other end of the second connecting hardware fitting is provided with symmetrical arc lugs; and the side wall of the second connecting hardware fitting is provided with a lock assembly fixedly connected with the second connecting hardware fitting.
Description
Technical Field
The invention belongs to the field of equipment for a power grid; in particular to a composite insulating cross arm.
Background
According to research results, the lightning flashover depends on the overvoltage value and the line insulation level, and research shows that the severity of the electric arc caused by the lightning stroke is reduced along with the reduction of the electric field gradient along the flashover path; therefore, the lightning flashover can be obviously improved by improving the insulation level of the line and increasing the insulation performance of the electric power tower; most electric power towers of the current domestic and foreign power distribution network systems are provided with iron cross arms, wooden cross arms and porcelain cross arms; the wood cross arm has insufficient strength and weak corrosion resistance; the strength of the porcelain cross arm is not enough, and the bending resistance is not enough; the iron cross arm has poor insulating property and is easy to rust; in addition, before the insulating cross arm in the prior art is installed, the replaced insulating cross arm needs to be loosened and moved downwards to a proper position, then a new insulating cross arm can be installed, the insulating cross arm needs to be fixed through a metal hinge during installation, the installation process is complex and needs to be carried out by two persons in a matching way, and after the installation, a lead on the original insulating cross arm needs to be turned upwards to the insulating cross arm; in the operation process, workers contact the live wire for many times, so that the number of dangerous points is large, the labor intensity is high, and the safety work is not facilitated.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a composite insulating cross arm.
The specific technical scheme of the invention is as follows:
a composite insulating cross arm comprises a core rod, wherein the core rod is of a cylindrical structure, and a rubber sheath is arranged on the outer surface of the core rod; the two ends of the core rod are provided with a cylindrical clamp in compression joint; one end of the cylindrical clamp is provided with a cavity which is matched and sleeved with the core rod, and the other end of the cylindrical clamp is closed; the side wall of the closed end of one of the cylindrical clamps is provided with a first connecting hardware fitting fixedly connected with the closed end of the one of the cylindrical clamps, the middle part of the first connecting hardware fitting is provided with an elliptical through hole, and the middle part of the top end of the first connecting hardware fitting is provided with an arc-shaped groove; two sides of the top are provided with lugs, and one lug side wall is fixedly connected with the cylinder clamp; the side wall of the closed end of the other cylindrical clamp is fixedly connected with one end of a second connecting hardware fitting; the second connecting hardware fitting is integrally in an inwards concave arc cylindrical shape, symmetrical arc lugs are arranged at the other end of the second connecting hardware fitting, gaps exist among the arc lugs, and an arc channel is arranged at the gap at one end of the second connecting hardware fitting; and the side wall of the second connecting hardware fitting is provided with a lock assembly fixedly connected with the second connecting hardware fitting.
Preferably, the lock assembly comprises a side plate fixedly connected with the second connecting assembly; the middle part of the side plate is provided with an arc-shaped wire hole penetrating through the front surface and the rear surface; the opening of the arc-shaped wire hole is upward; a first vertical groove penetrating through the top of the side plate is formed in the opening of the arc-shaped wire hole; one end of the side plate, which is close to the cylindrical clamp, is also provided with a second vertical groove which is parallel to the first vertical groove; a clamping groove which penetrates through the front surface and the rear surface of the side plate and is communicated with the second vertical groove extends from the bottom of the second vertical groove to the direction of the cylindrical clamp; the middle part of the side plate is provided with a transverse groove which penetrates through the top, the bottom and the side wall; a first rotating shaft is arranged in the transverse groove, and two ends of the first rotating shaft are respectively and vertically connected with the inner wall of the side plate; the first rotating shaft is rotatably connected with a rotating clamping plate.
Preferably, a wire pressing groove matched with the arc-shaped wire hole is formed in the top end of the rotating clamping plate; a first cavity is formed in one end face, away from the first rotating shaft, of the rotating clamping plate, and a connecting seat is connected to the inside of the first cavity in a sliding mode; a fixing plate is arranged on the outer side of the connecting seat; clamping blocks matched with the clamping grooves are respectively arranged in the middle of the front end and the rear end of the fixing plate; and the bottom of the fixed plate is provided with a push-pull assembly.
Optimally, a clamping strip is arranged in the middle of the inner side of the cylindrical clamp in the length direction; the middle parts of the front side wall and the rear side wall of the clamping strip are provided with second cavities; a second rotating shaft is vertically arranged at one end of the second cavity; a triangular clamping block is arranged on the second rotating shaft and can enter and exit the second cavity; and a torsion spring is sleeved on the second rotating shaft, one end of the torsion spring is connected with the clamping strip, and the other end of the torsion spring is connected with the second rotating shaft.
Preferably, the bottoms of the two ends of the core rod are provided with third cavities; and a groove matched with the triangular clamping block is formed in the inner wall of the third cavity.
Preferably, the push-pull assembly comprises two parallel supporting seats which are vertical to the bottom of the fixed plate; a third rotating shaft in rotating connection is arranged between the supporting columns; a push-pull rod is vertically connected to the third rotating shaft; and a convex handle is arranged at one end of the push-pull rod, which is far away from the third rotating shaft.
Preferably, the height of the second vertical groove is equal to the distance from the top of the fixture block to the bottom of the fixing plate.
Preferably, the surface of the arc-shaped wire hole is provided with insulating rubber.
Optimally, the side area of the fixed plate is equal to that of the rotating clamping plate.
Optimally, damping slide rails are arranged on the inner walls of the two sides of the first cavity in parallel; and sliding rods matched with the damping sliding rails are arranged on the front side and the rear side of the connecting seat.
The invention has the following beneficial effects:
1. the insulating level of the line is improved, the insulating performance of the electric power tower is improved, lightning flashover is obviously improved, the safety performance of the line is improved, and the service life of the line is prolonged;
2. the paint is not easy to rust and corrode and can be used for a long time;
3. the installation does not need to be carried out through a metal hinge, the installation process is simple, multiple persons do not need to cooperate, and the installation is rapid and convenient; in the operation process, workers do not need to contact with the live wire for many times, the safety factor is improved, the labor intensity is reduced, and the safe operation is facilitated.
Drawings
FIG. 1 is an overall assembly and disassembly view of a composite insulating cross arm provided by the invention;
fig. 2 is a schematic connection diagram of a composite insulating cross arm cylinder clamp, a second connecting hardware fitting and a lock assembly provided by the invention;
FIG. 3 is a schematic view of a composite insulating cross arm lock assembly according to the present invention;
FIG. 4 is a schematic view of a composite insulating cross arm rotation clamping plate provided in the present invention;
FIG. 5 is a schematic view of a composite insulating cross arm clip strip according to the present invention;
FIG. 6 is a diagram of a composite insulated cross-arm core provided by the present invention;
FIG. 7 is an enlarged view of FIG. 6A;
FIG. 8 is a cross-sectional view of FIG. 7B-B;
figure 9 is a schematic view of a composite insulated cross arm push-pull assembly according to the present invention;
fig. 10 is a schematic view of a first cavity of a composite insulating cross arm according to the present invention.
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.
Example 1
Referring to fig. 1, the invention provides a composite insulating cross arm, which comprises a core rod 2, wherein the core rod 2 is of a cylindrical structure, and a rubber sheath 3 is arranged on the outer surface of the core rod 2; two ends of the core rod 2 are provided with a cylindrical clamp 4 which is pressed and connected; one end of the cylindrical clamp 4 is provided with a cavity which is matched and sleeved with the core rod 2, and the other end of the cylindrical clamp 4 is closed; a first connecting hardware fitting 1 fixedly connected with one of the cylindrical clamps 4 is arranged on the side wall of the closed end of the one of the cylindrical clamps, an elliptical through hole 11 is formed in the middle of the first connecting hardware fitting 1, and an arc-shaped groove 13 is formed in the middle of the top end of the first connecting hardware fitting; two sides of the top are provided with lugs 12, wherein the side wall of one lug 12 is fixedly connected with the cylinder clamp 4; the side wall of the closed end of the other cylindrical clamp 4 is fixedly connected with one end of a second connecting hardware fitting 6; the second connecting hardware fitting 6 is integrally in an inwards concave arc cylindrical shape, symmetrical arc lugs 61 are arranged at the other end of the second connecting hardware fitting 6, gaps exist among the arc lugs 61, and an arc channel is arranged at the gap at one end of the second connecting hardware fitting 6; and the side wall of the second connecting hardware fitting 6 is provided with a lock assembly 5 fixedly connected with the second connecting hardware fitting.
When in use, the connecting hardware fitting is fixedly connected to the strut; inserting the core rod into the cylindrical fixture for clamping connection; the electric wire is carried on the lockset component for locking.
Example 2
Referring to fig. 2 and 3, as a technical optimization scheme of the present invention, the lock assembly 5 includes a side plate 51 fixedly connected to the second link fitting 6; the middle part of the side plate 51 is provided with an arc-shaped wire hole 52 which penetrates through the front surface and the rear surface; the arc-shaped line hole 52 is opened upwards; a first vertical groove 515 penetrating to the top of the side plate 51 is arranged at the opening of the arc-shaped line hole 52; a second vertical groove 516 parallel to the first vertical groove 515 is further arranged at one end of the side plate 51 close to the cylinder clamp 4; a clamping groove 518 which penetrates through the front surface and the rear surface of the side plate 51 and is communicated with the second vertical groove 516 extends from the bottom of the second vertical groove 516 to the direction of the cylindrical clamp 4; a transverse groove 517 penetrating through the top, the bottom and the side wall is arranged in the middle of the side plate 51; a first rotating shaft 514 is arranged in the transverse groove 517, and two ends of the first rotating shaft 514 are respectively and vertically connected with the inner wall of the side plate 51; the first rotating shaft 514 is rotatably connected with a rotating clamping plate 54; the arc-shaped wire hole plays a role in placing a wire, and the second vertical groove plays a role in enabling the clamping block to pass through smoothly; the purpose of draw-in groove plays the purpose with the fixture block.
When the cross arm is replaced, the line is taken out along the first vertical groove and placed on a new cross arm, and is placed in the arc-shaped wire hole along the first vertical groove; therefore, the contact frequency of the workers and the circuit is reduced, and the safety factor and the working efficiency are improved.
Example 3
Referring to fig. 4, as a technical optimization scheme of the present invention, a line pressing groove 513 matching with the arc-shaped line hole 52 is disposed at the top end of the rotating clamping plate 54; a first cavity 520 is formed in one end face, away from the first rotating shaft 514, of the rotating clamping plate 54, and a connecting seat 58 is slidably connected inside the first cavity 520; a fixing plate 510 is arranged outside the connecting seat 58; clamping blocks 511 matched with the clamping grooves 518 are respectively arranged in the middle of the front end and the rear end of the fixing plate 510; the bottom of the fixed plate 510 is provided with a push-pull assembly; the wire pressing groove is used for achieving the purpose of fixing the electric wire.
When the wire pressing device is used, an electric wire is directly placed into the arc-shaped wire groove from the top end of the first vertical groove, then the push-pull assembly is held to rotate the fixing plate into the transverse groove to press the wire pressing groove on the electric wire in the arc-shaped wire groove, then the push-pull assembly is pushed, the fixing plate moves towards the direction of the clamping groove to drive the connecting seat to move towards the direction of the clamping groove, and at the moment, the clamping block moves into the clamping groove to be clamped and connected, so that the fixing effect is achieved; when the cross arm needs to be replaced, the fixing plate is driven to be away from the clamping groove through pulling the handle, so that the clamping block is withdrawn from the clamping groove, the rotating clamping plate is lifted upwards through the handle when the clamping block is completely withdrawn, the circuit is taken out, and the cross arm is replaced.
Example 4
Referring to fig. 5, as a technical optimization scheme of the present invention, a clamping strip 41 is disposed in the middle of the inner side of the cylindrical clamp 4 in the length direction; the middle parts of the front side wall and the rear side wall of the clamping strip 41 are provided with second cavities; a second rotating shaft 44 is vertically arranged at one end of the second cavity; a triangular clamping block 42 is arranged on the second rotating shaft 44, and the triangular clamping block 42 can enter and exit the interior of the second cavity; a torsion spring 43 is sleeved on the second rotating shaft 44, one end of the torsion spring 43 is connected with the clamping strip 41, and the other end of the torsion spring 43 is connected with the second rotating shaft 44; the clamping strip is used for guiding the core rod to be inserted into the cylindrical clamp for positioning; the purpose of the triangular clamping block is to clamp and fix the entering core rod; the second cavity plays a role in smooth rotation of the triangular clamping block; the purpose of the torsion spring is to reset the triangular clamping block.
Referring to fig. 6 to 8, as a technical optimization scheme of the present invention, the bottom of each end of the mandrel 2 is provided with a third cavity 21; a groove 22 matched with the triangular clamping block 42 is formed in the inner wall of the third cavity 21; the purpose of smoothly entering the cylindrical fixture and fixing is achieved.
When the cylindrical fixture is used, the core rod is inserted into the U-shaped clamping groove, the third cavity at the lower end of the core rod is inserted into the U-shaped clamping strip along the clamping strip, the triangular clamping block can be extruded into the second cavity, the groove just moves to the position of the triangular clamping block when one end of the core rod is contacted with the bottom of the cylindrical fixture, and the triangular clamping block is clamped into the groove under the action of the restoring force of the torsion spring; thereby achieving the fixing effect.
Example 5
As shown in fig. 9, as a technical optimization solution of the present invention, the push-pull assembly includes two parallel supporting seats 57 perpendicular to the bottom of the fixing plate; a third rotating shaft 59 in rotating connection is arranged between the supporting columns 57; the third rotating shaft 59 is provided with a push-pull rod 56 which is vertically connected; a convex handle 55 is arranged at one end of the push-pull rod 56 away from the third rotating shaft 59; the function of pushing and pulling the fixing plate is achieved.
Example 6
As a technical optimization scheme of the present invention, the height of the second transverse groove 516 is equal to the distance from the top of the latch 511 to the bottom of the fixing plate 510; the purpose that the clamping block is smoothly clamped into the clamping groove is achieved.
As a technical optimization scheme of the invention, the surface of the arc-shaped wire hole 52 is provided with insulating rubber 53.
As a technical optimization scheme of the present invention, the area of the side of the fixed plate 510 is equal to the area of the side of the rotating clamping plate 54.
Example 7
Referring to fig. 10, as a technical optimization scheme of the present invention, damping slide rails 519 are arranged in parallel on the inner walls of two sides of the first cavity 520; sliding rods 512 matched with the damping slide rails 519 are arranged on the front side and the rear side of the connecting seat 58; the purpose of smooth sliding between the connecting seat and the first cavity is achieved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in 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 (9)
1. A composite insulating cross arm comprises a core rod (2), and is characterized in that: the core rod (2) is of a cylindrical structure, and a rubber sheath (3) is arranged on the outer surface of the core rod (2); two ends of the core rod (2) are provided with a compression joint cylindrical clamp (4); one end of the cylindrical clamp (4) is provided with a cavity which is matched and sleeved with the core rod (2), and the other end of the cylindrical clamp (4) is closed; a first connecting fitting (1) fixedly connected with the side wall of the closed end of one of the cylindrical clamps (4) is arranged on the side wall of the closed end of the one cylindrical clamp, an elliptical through hole (11) is formed in the middle of the first connecting fitting (1), and an arc-shaped groove (13) is formed in the middle of the bottom end of the one cylindrical clamp; two sides of the bottom are provided with lugs (12), wherein the side wall of one lug (12) is fixedly connected with the cylinder clamp (4); the side wall of the closed end of the other cylindrical clamp (4) is fixedly connected with one end of a second connecting hardware fitting (6); the second connecting hardware fitting (6) is integrally in an inwards concave arc cylindrical shape, symmetrical arc lugs (61) are arranged at the other end of the second connecting hardware fitting, gaps exist among the arc lugs (61), and an arc channel is arranged at the gap at one end of the second connecting hardware fitting (6); the side wall of the second connecting hardware fitting (6) is provided with a lockset component (5) fixedly connected with the second connecting hardware fitting; the lockset component (5) comprises a side plate (51) fixedly connected with the second connecting hardware fitting (6); the middle part of the side plate (51) is provided with an arc-shaped wire hole (52) which penetrates through the front surface and the rear surface; the arc-shaped line hole (52) is opened upwards; a first vertical groove (515) penetrating to the top of the side plate (51) is formed at the opening of the arc-shaped line hole (52); one end of the side plate (51) close to the cylindrical clamp (4) is also provided with a second vertical groove (516) parallel to the first vertical groove (515); a clamping groove (518) which penetrates through the front surface and the rear surface of the side plate (51) and is communicated with the second vertical groove (516) extends from the bottom of the second vertical groove (516) to the direction of the cylindrical clamp (4); a transverse groove (517) penetrating through the top, the bottom and the side wall is formed in the middle of the side plate (51); a first rotating shaft (514) is arranged in the transverse groove (517), and two ends of the first rotating shaft (514) are respectively and vertically connected with the inner wall of the side plate (51); the first rotating shaft (514) is rotatably connected with a rotating clamping plate (54).
2. A composite insulating cross arm according to claim 1, characterized in that the top end of the rotating clamping plate (54) is provided with a line pressing groove (513) matched with the arc-shaped line hole (52); a first cavity (520) is formed in one end face, away from the first rotating shaft (514), of the rotating clamping plate (54), and a connecting seat (58) is connected to the inside of the first cavity (520) in a sliding mode; a fixing plate (510) is arranged on the outer side of the connecting seat (58); clamping blocks (511) matched with the clamping grooves (518) are respectively arranged in the middle of the front end and the rear end of the fixing plate (510); the bottom of the fixed plate (510) is provided with a push-pull assembly.
3. A composite insulating cross arm according to claim 1, characterized in that a clamping strip (41) is arranged in the middle of the inner side of the cylindrical clamp (4) in the length direction; the middle parts of the front side wall and the rear side wall of the clamping strip (41) are provided with second cavities; a second rotating shaft (44) is vertically arranged at one end of the second cavity; a triangular clamping block (42) is arranged on the second rotating shaft (44), and the triangular clamping block (42) can enter and exit the second cavity; the second rotating shaft (44) is sleeved with a torsion spring (43), one end of the torsion spring (43) is connected with the clamping strip (41), and the other end of the torsion spring is connected with the second rotating shaft (44).
4. The composite insulating cross arm as claimed in claim 3, wherein the bottom of the two ends of the core rod (2) is provided with a third cavity (21); and a groove (22) matched with the triangular clamping block (42) is formed in the inner wall of the third cavity (21).
5. A composite insulating cross-arm according to claim 2, wherein the push-pull assembly comprises two mutually parallel support seats (57) perpendicular to the bottom of the fixed plate; a third rotating shaft (59) in rotating connection is arranged between the supporting seats (57); a push-pull rod (56) which is vertically connected is arranged on the third rotating shaft (59); and a convex handle (55) is arranged at one end of the push-pull rod (56) far away from the third rotating shaft (59).
6. A composite insulating cross-arm according to claim 2, wherein the height of the second vertical slot (516) is equal to the distance from the top of the latch (511) to the bottom of the fixing plate (510).
7. A composite insulating cross arm according to claim 1, wherein the surface of the arc-shaped wire hole (52) is provided with insulating rubber (53).
8. A composite insulating cross-arm according to claim 2, wherein the area of the side of the fixed plate (510) is equal to the area of the side of the rotating clamping plate (54).
9. The composite insulating cross arm as claimed in claim 2, wherein damping slide rails (519) are arranged in parallel on the inner walls of two sides of the first cavity (520); and sliding rods (512) matched with the damping sliding rails (519) are arranged on the front side and the rear side of the connecting seat (58).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711192229.XA CN107859417B (en) | 2017-11-24 | 2017-11-24 | Composite insulating cross arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711192229.XA CN107859417B (en) | 2017-11-24 | 2017-11-24 | Composite insulating cross arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107859417A CN107859417A (en) | 2018-03-30 |
| CN107859417B true CN107859417B (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711192229.XA Active CN107859417B (en) | 2017-11-24 | 2017-11-24 | Composite insulating cross arm |
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| Country | Link |
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| CN (1) | CN107859417B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398710Y (en) * | 1999-12-03 | 2000-09-27 | 吕学岐 | Low-pressure composite insulator |
| CN202544474U (en) * | 2012-03-29 | 2012-11-21 | 浙江中瑞电气有限公司 | Cross arm used on top of telegraph pole |
| CN206608659U (en) * | 2017-03-29 | 2017-11-03 | 杭州炎龙建设有限公司 | A kind of dilatory pipe quickly connected |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003098A (en) * | 2009-09-02 | 2011-04-06 | 南通市神马电力科技有限公司 | Composite insulating tower for power grid transmission line |
| KR20130026290A (en) * | 2011-09-05 | 2013-03-13 | 한국전력공사 | Complex supporting bar structure for 2 type and cut out switch |
| CN202227764U (en) * | 2011-09-15 | 2012-05-23 | 北京玻钢院复合材料有限公司 | Composite electric cross arm |
| CN203338884U (en) * | 2013-06-19 | 2013-12-11 | 国家电网公司 | Composite insulator |
| CN203456188U (en) * | 2013-08-26 | 2014-02-26 | 大连电瓷集团股份有限公司 | Composite cross-arm insulator for 35 kV power distribution in rural power grid |
| CN205189490U (en) * | 2015-12-09 | 2016-04-27 | 方隆电气设备有限公司 | Insulating cross arm |
| CN205558446U (en) * | 2016-04-13 | 2016-09-07 | 重庆顺泰铁塔制造有限公司 | Transmission of electricity cross arm |
| CN106972441B (en) * | 2017-04-25 | 2019-03-05 | 江苏神马电力股份有限公司 | A kind of wire fixing device and compound cross-arm |
-
2017
- 2017-11-24 CN CN201711192229.XA patent/CN107859417B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398710Y (en) * | 1999-12-03 | 2000-09-27 | 吕学岐 | Low-pressure composite insulator |
| CN202544474U (en) * | 2012-03-29 | 2012-11-21 | 浙江中瑞电气有限公司 | Cross arm used on top of telegraph pole |
| CN206608659U (en) * | 2017-03-29 | 2017-11-03 | 杭州炎龙建设有限公司 | A kind of dilatory pipe quickly connected |
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| CN107859417A (en) | 2018-03-30 |
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Address after: No. 88, Yingbin East Road, New Development Zone, Gaobeidian City, Baoding City, Hebei Province 074000 Applicant after: Fanglong Group Co., Ltd Address before: North Gaobeidian City Office nanxinzhaung village 074000 Hebei city of Baoding Province Applicant before: FANGLONG ELECTRICAL EQUIPMENT CO., LTD. |
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