CN111852163A - Hollow interlayer high-strength concrete pole - Google Patents
Hollow interlayer high-strength concrete pole Download PDFInfo
- Publication number
- CN111852163A CN111852163A CN202010735139.6A CN202010735139A CN111852163A CN 111852163 A CN111852163 A CN 111852163A CN 202010735139 A CN202010735139 A CN 202010735139A CN 111852163 A CN111852163 A CN 111852163A
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- layer
- connecting block
- strength concrete
- pole
- concrete pole
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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
- E04H12/02—Structures made of specified materials
- E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
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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
- E04H12/16—Prestressed structures
-
- 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
- E04H12/22—Sockets or holders for poles or posts
-
- 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
- E04H12/22—Sockets or holders for poles or posts
- E04H12/2253—Mounting poles or posts to the holder
- E04H12/2269—Mounting poles or posts to the holder in a socket
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Foundations (AREA)
Abstract
The invention relates to a hollow interlayer high-strength concrete pole. The hollow interlayer high-strength concrete pole comprises a bottom pole piece, wherein a middle pole piece is fixedly connected to the outer surface of the upper end of the bottom pole piece, an upper pole piece is detachably connected to the outer surface of the upper end of the middle pole piece, an inserting table is fixedly connected to the middle of the outer surface of the lower end of the upper pole piece, a connecting part is arranged on the outer surface of the upper end of the middle pole piece, an inserting groove is formed in the upper end surface of the connecting part, a downward protruding edge plate is fixedly connected to the outer surface of the lower end of the upper pole piece, the edge plate surrounds the lower end surface of the upper pole piece in a ring shape, the inserting table is positioned in the middle of the ring-shaped edge plate, the edge plate is inserted; this cavity intermediate layer high strength concrete pole, simple structure, convenient operation uses in a flexible way, adopts the sectional type structure, and stability is high, and bulk strength is big, and preparation is convenient, and the installation is saved trouble, convenient to popularize and use.
Description
Technical Field
The invention belongs to the technical field of electric poles, and particularly relates to a hollow interlayer high-strength concrete electric pole.
Background
The pole is the bridge of electricity, lets the electricity transport each place, and we common pole have wooden system pole, has the cement pole, and their height differs, stands upright in the plain mountain, spreads all over around people. The general class of pole is many, the common concrete pole is with the pole that concrete and reinforcing bar or steel wire made, the concrete pole has prestressing force and two kinds of non-prestressing force, the concrete layer of current prestressed concrete pole divide into hollow and solid two kinds, the pole on solid concrete layer is dry, do not have under the corrosive environment intensity height, the advantage that the durability is good, but the pole that exceeds 15 meters just needs the segmentation equipment, when carrying out pole section butt welding to the equipment pole, because the coefficient of heat conduction of connecting the steel ring is great, the high temperature that the welding produced will be passed to near the concrete of steel ring very fast, can expand together with the steel ring after being heated, these factors cause near the concrete of steel ring to produce irregular crackle easily, current prestressed concrete pole combination result of use is poor, it is not enough safe and firm, inconvenient use.
Disclosure of Invention
The invention aims to solve the problems and provide a hollow interlayer high-strength concrete electric pole which is simple in structure and reasonable in design.
The invention realizes the purpose through the following technical scheme:
a hollow interlayer high-strength concrete pole comprises a bottom rod piece, a middle rod piece is fixedly connected with the outer surface of the upper end of the bottom rod piece, the outer surface of the upper end of the middle rod piece is detachably connected with an upper rod piece, the middle part of the outer surface of the lower end of the upper rod piece is fixedly connected with an inserting table, the outer surface of the upper end of the middle rod piece is provided with a connecting part, the upper end surface of the connecting part is provided with a slot, the outer surface of the lower end of the upper rod piece is fixedly connected with an edge plate which protrudes downwards, the edge plate surrounds the lower end surface of the upper rod piece in a ring shape, the inserting table is positioned in the middle of a ring-shaped edge plate, the edge plate is inserted into the slot, the inserting table is inserted into the middle rod piece, the inner surface of the middle rod piece is in close contact with the inserting table, connecting bolts are inserted into the outer surface of the connecting portion and penetrate through the edge plate, and the number of the connecting bolts is a plurality of groups.
As a further optimization scheme of the invention, the rod wall section of the middle rod piece is in an isosceles trapezoid shape, and the inner angle of the rod wall is 15-30 degrees.
As a further optimization scheme of the invention, the pole wall of the middle pole piece comprises an outer steel tube layer and an inner steel tube layer, a concrete layer is arranged between the outer steel tube layer and the inner steel tube layer, a spirally-coiled reinforcing rib frame is arranged inside the concrete layer, vertical reinforcing ribs are fixedly connected between adjacent layers of the reinforcing rib frame, each vertical reinforcing rib comprises a connecting inner rib, two ends of each connecting inner rib are respectively and fixedly connected with two adjacent layers of the reinforcing rib frame, a connecting outer shell is arranged on the outer surface of each connecting inner rib, and a gap is reserved between each connecting outer shell and each connecting inner rib.
As a further optimization scheme of the invention, the outer surface of the bottom rod piece is fixedly connected with an upper layer connecting block and a lower layer connecting block.
The invention further optimizes the scheme of the invention, which comprises a base member, wherein the outer surface of the upper end of the base member is provided with a bottom rod socket, the outer surface of the upper end of the base member is also provided with a pouring gate, the upper connecting block and the lower connecting block are inserted into the base member from the pouring gate, and the bottom rod member is inserted into the base member from the bottom rod socket.
As a further optimization scheme of the invention, an upper layer transverse groove and a lower layer transverse groove are formed in the base member, the upper layer connecting block enters the upper layer transverse groove through rotation after being inserted into the base member, the lower layer connecting block enters the lower layer transverse groove through rotation after being inserted into the base member, the outer surface of the upper end of the base member is connected with foundation bolts, and the foundation bolts penetrate through the upper layer connecting block and the lower layer connecting block.
As a further optimization scheme of the invention, the outer surfaces of the upper ends of the upper connecting block and the lower connecting block are both wedge-shaped surfaces, and the upper connecting block and the lower connecting block are respectively wedged with the upper transverse groove and the lower transverse groove in a matching manner.
As a further optimization scheme of the invention, the pouring gate on the outer surface of the upper end of the base member is filled with filling cement.
The invention has the beneficial effects that: the invention is provided with a middle rod piece, the upper end of the middle rod piece is provided with a connecting part, the upper end of the connecting part is provided with a slot, the upper rod piece can be connected with the upper rod piece through the upper end opening and the slot of the connecting part, the upper rod piece is generally provided with a bracket cross arm, a wire cross arm, a ground wire top frame and the like, an inserting platform at the lower end of the upper rod piece and an edge plate are inserted into the connecting part, and the two are thoroughly fixed through a connecting bolt, so that the connecting strength of the two is further improved, and the instability caused by manufacturing a long; the lower end of the middle rod piece is provided with a bottom rod piece, the outer surface of the bottom rod piece is fixedly connected with a connecting block, the connecting block is divided into an upper connecting block and a lower connecting block, the whole bottom rod piece is connected with the base piece through the connecting block, the bottom rod piece and the connecting block are inserted into the connecting block through a pouring port and a bottom rod socket, the bottom rod piece is informed to rotate and fixed by matching with foundation bolts, the end face of the connecting block is wedge-shaped, the stability of the whole electric pole is further improved, and after the installation is finished, cement is poured and filled into the base piece through the pouring port, and the final fixation is finished; whole pole simple structure, convenient operation uses in a flexible way, adopts the sectional type structure, and stability is high, and bulk strength is big, and the preparation is convenient, and the installation is saved trouble, convenient to popularize and use.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1 of the present invention;
FIG. 3 is a schematic view of the construction of the vertical reinforcing bar of the present invention;
FIG. 4 is a schematic view of the upper end face of the base member of the present invention;
fig. 5 is a schematic structural diagram of an upper connection block and a lower connection block according to the present invention.
In the figure: 1. a base member; 2. a middle rod member; 3. a connecting portion; 4. an upper rod piece; 5. a connecting bolt; 6. anchor bolts; 7. inserting a platform; 8. a slot; 9. an outer steel pipe layer; 10. an inner steel pipe layer; 11. a reinforcing rib frame; 12. a bottom bar member; 13. an upper connecting block; 14. a lower layer connecting block; 15. connecting the inner ribs; 16. connecting the shell; 17. a pouring gate; 18. a bottom rod socket.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1 to 5, a hollow sandwich high-strength concrete pole comprises a bottom rod 12, wherein a middle rod 2 is fixedly connected to the outer surface of the upper end of the bottom rod 12, an upper rod 4 is detachably connected to the outer surface of the upper end of the middle rod 2, an inserting table 7 is fixedly connected to the middle of the outer surface of the lower end of the upper rod 4, a connecting portion 3 is arranged on the outer surface of the upper end of the middle rod 2, an inserting groove 8 is formed in the upper end surface of the connecting portion 3, a downward protruding edge plate is fixedly connected to the outer surface of the lower end of the upper rod 4, the edge plate surrounds the lower end surface of the upper rod 4 in a ring shape, the inserting table 7 is located in the middle of the ring-shaped edge plate, the edge plate is inserted into the inserting groove 8, the inserting table 7 is inserted into the inside of the middle rod 2, the inner surface of the middle rod 2 is in close contact, the connecting bolts 5 penetrate through the edge plates, the number of the connecting bolts 5 is a plurality of groups, as shown in fig. 1 and fig. 2, the connecting bolts are regular in the embodiment, the upper end of the middle rod piece 2 is open, the inserting table 7 is inserted into the middle rod piece and is in close contact with the inside of the middle rod piece 2, a thread structure can be further arranged on the outer surface of the inserting table 7 in the embodiment, and the inserting table 7 and the middle rod piece 2 are connected through the thread structure.
The rod wall section of the middle rod piece 2 is in an isosceles trapezoid shape, and the inner angle of the rod wall is 15-30 degrees; the wall of the middle rod member 2 comprises an outer steel pipe layer 9 and an inner steel pipe layer 10, a concrete layer is arranged between the outer steel pipe layer 9 and the inner steel pipe layer 10, a spiral reinforcing rib frame 11 is arranged inside the concrete layer, vertical reinforcing ribs are fixedly connected between adjacent layers of the reinforcing rib frame 11, each vertical reinforcing rib comprises a connecting inner rib 15, two ends of each connecting inner rib 15 are fixedly connected with two adjacent layers of the reinforcing rib frame 11 respectively, a connecting shell 16 is arranged on the outer surface of each connecting inner rib 15, a gap is reserved between each connecting shell 16 and each connecting inner rib 15, each reinforcing rib frame 11 is spirally distributed between the outer steel pipe layer 9 and the inner steel pipe layer 10 of the middle rod member 2, the anti-fracture strength of the concrete layer can be improved, the vertical reinforcing ribs can further enhance the stability of the reinforcing rib frames 11 and the strength of the concrete layer, and are formed by the connecting inner ribs 15 and the connecting shells 16, a gap is reserved between the connecting shell 16 and the connecting inner rib 15, meanwhile, the connecting shell 16 is made of soft metal materials and provides certain elasticity, or a harder rubber layer shell is adopted and can reduce the internal stress in a concrete layer when the concrete is formed after pouring, and an aluminum alloy layer is selected in the embodiment;
the outer surface of the bottom rod piece 12 is fixedly connected with an upper layer connecting block 13 and a lower layer connecting block 14; the base comprises a base member 1, wherein a bottom rod socket 18 is formed in the outer surface of the upper end of the base member 1, a pouring gate 17 is further formed in the outer surface of the upper end of the base member 1, an upper connecting block 13 and a lower connecting block 14 are inserted into the base member 1 from the pouring gate 17, and a bottom rod member 12 is inserted into the base member 1 from the bottom rod socket 18; an upper layer transverse groove and a lower layer transverse groove are formed in the base member 1, the upper layer connecting block 13 enters the upper layer transverse groove through rotation after being inserted into the base member 1, the lower layer connecting block 14 enters the lower layer transverse groove through rotation after being inserted into the base member 1, the outer surface of the upper end of the base member 1 is connected with foundation bolts 6, and the foundation bolts 6 penetrate through the upper layer connecting block 13 and the lower layer connecting block 14; the outer surfaces of the upper ends of the upper connecting block 13 and the lower connecting block 14 are both wedge-shaped surfaces, and the upper connecting block 13 and the lower connecting block 14 are respectively wedged into the upper transverse groove and the lower transverse groove in a matching manner; the pouring gate 17 of the outer surface of the upper end of the base member 1 is filled with filling cement.
It should be noted that, when the hollow interlayer high-strength concrete pole is used, the hollow interlayer high-strength concrete pole is provided with a middle rod piece 2, the upper end of the middle rod piece 2 is provided with a connecting part 3, the upper end of the connecting part 3 is provided with a slot 8, the upper rod piece 4 can be connected with the upper rod piece 4 through the upper end opening of the connecting part 3 and the slot 8, the upper rod piece 4 is generally provided with a bracket cross arm, a wire cross arm, a ground wire top frame and the like, an inserting platform 7 at the lower end of the upper rod piece 4 and an edge plate are inserted into the connecting part 3, and the two are thoroughly fixed through a connecting bolt 5, so that the connecting strength of the two is further improved; the lower end of the middle rod piece 2 is provided with a bottom rod piece 12, the outer surface of the bottom rod piece 12 is fixedly connected with a connecting block, the connecting block is divided into an upper connecting block 13 and a lower connecting block 14, the whole bottom rod piece 12 is connected with the base piece 1 through the connecting block, the bottom rod piece 12 and the connecting block are inserted into the connecting block through a pouring port 17 and a bottom rod inserting port 18, the bottom rod piece 12 is informed to rotate and is fixed by matching with the foundation bolt 6, the end face of the connecting block is wedge-shaped, the stability of the whole electric pole is further improved, cement is poured and filled into the base piece 1 through the pouring port 17 after the installation is completed, and the final fixation is; whole pole simple structure, convenient operation uses in a flexible way, adopts the sectional type structure, and stability is high, and bulk strength is big, and the preparation is convenient, and the installation is saved trouble, convenient to popularize and use.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. The utility model provides a cavity intermediate layer high strength concrete pole, its characterized in that, includes end member (12), the upper end surface fixed connection of end member (12) has middle part member (2), the upper end surface of middle part member (2) can be dismantled and is connected with member (4), the lower extreme surface middle part fixed connection of going up member (4) inserts platform (7), the upper end surface of middle part member (2) is provided with connecting portion (3), slot (8) have been seted up to the up end of connecting portion (3), the lower extreme surface fixed connection of going up member (4) has the board of protruding downwards, the lower terminal surface that the board encircles member (4) is the circle form, insert platform (7) are located the middle part of the edge board of circle form, insert in slot (8) along the board, insert platform (7) insert in the inside of middle part member (2), the inner surface of middle part member (2) with insert platform (7) in close contact with, connecting bolt (5) have been inserted to the surface of connecting portion (3), connecting bolt (5) run through along the board, the quantity of connecting bolt (5) is a plurality of groups.
2. A hollow laminated high strength concrete pole as claimed in claim 1, wherein: the rod wall section of the middle rod piece (2) is in an isosceles trapezoid shape, and the inner angle of the rod wall is 15-30 degrees.
3. A hollow laminated high strength concrete pole as claimed in claim 2, wherein: the pole wall of middle part member (2) includes outer steel pipe layer (9) and interior steel pipe layer (10), be provided with concrete layer between outer steel pipe layer (9) and interior steel pipe layer (10), concrete layer's inside is provided with spiral's reinforcement frame (11), equal fixedly connected with vertical strengthening rib between the adjacent layer of reinforcement frame (11), muscle (15) in the vertical strengthening rib is including connecting, the both ends of muscle (15) are respectively with the adjacent two-layer fixed connection of reinforcement frame (11) in the connection, the surface of muscle (15) is provided with connection shell (16) in the connection, leave the space between muscle (15) in connection shell (16) and the connection.
4. A hollow laminated high strength concrete pole as claimed in claim 3, wherein: the outer surface of the bottom rod piece (12) is fixedly connected with an upper layer connecting block (13) and a lower layer connecting block (14).
5. A hollow laminated high strength concrete pole as claimed in claim 4, wherein: including base member (1), sill bar socket (18) have been seted up to the upper end surface of base member (1), sprue gate (17) have still been seted up to the upper end surface of base member (1), upper connecting block (13) and lower floor connecting block (14) insert in the inside of base member (1) from sprue gate (17), sill bar spare (12) insert in the inside of base member (1) from sill bar socket (18) position.
6. A hollow laminated high strength concrete pole as claimed in claim 5, wherein: upper strata transverse groove and lower floor's transverse groove have been seted up to the inside of base spare (1), upper connecting block (13) get into the upper strata transverse groove through rotating after the inside that inserts base spare (1), lower floor's connecting block (14) get into lower floor's transverse groove through rotating after the inside that inserts base spare (1), the upper end surface connection of base spare (1) has rag bolt (6), and rag bolt (6) run through upper connecting block (13) and lower floor's connecting block (14).
7. A hollow laminated high strength concrete pole as claimed in claim 6, wherein: the upper end surface of the upper layer connecting block (13) and the lower layer connecting block (14) is a wedge-shaped surface, and the upper layer connecting block (13) and the lower layer connecting block (14) are respectively wedged into the upper layer transverse groove and the lower layer transverse groove in a matching manner.
8. A hollow laminated high strength concrete pole as claimed in claim 7, wherein: and a pouring port (17) on the outer surface of the upper end of the base member (1) is filled with filling cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010735139.6A CN111852163A (en) | 2020-07-28 | 2020-07-28 | Hollow interlayer high-strength concrete pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010735139.6A CN111852163A (en) | 2020-07-28 | 2020-07-28 | Hollow interlayer high-strength concrete pole |
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| Publication Number | Publication Date |
|---|---|
| CN111852163A true CN111852163A (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010735139.6A Pending CN111852163A (en) | 2020-07-28 | 2020-07-28 | Hollow interlayer high-strength concrete pole |
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| CN (1) | CN111852163A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733639A (en) * | 2011-03-31 | 2012-10-17 | 河南省电力公司济源供电公司 | Electric pole under bracing member |
| ES2524840A1 (en) * | 2014-06-06 | 2014-12-12 | Esteyco Energía | Foundation system for towers and installation procedure of the foundation system for towers (Machine-translation by Google Translate, not legally binding) |
| CN205688925U (en) * | 2016-06-27 | 2016-11-16 | 内蒙古通维水泥制品有限公司 | A kind of prestressed concrete electric pole |
| CN207096212U (en) * | 2017-07-19 | 2018-03-13 | 泛测（北京）环境科技有限公司 | Air monitor |
| CN207944767U (en) * | 2018-02-06 | 2018-10-09 | 青岛海瑞普电力科技有限公司 | Prestressed concrete pole |
| CN208534163U (en) * | 2018-07-12 | 2019-02-22 | 国网浙江省电力有限公司丽水供电公司 | A kind of hollow sandwich high tensile steel tube concurrent |
| CN208781757U (en) * | 2018-09-05 | 2019-04-23 | 中国石化集团胜利石油管理局有限公司电力分公司 | A kind of mounting structure of outdoor high-voltage isolating switch |
| CN208981886U (en) * | 2018-09-05 | 2019-06-14 | 广东宇信水泥制品有限公司 | A kind of admixture high energy fiber-reactive powder concrete electrical pole |
| CN210127527U (en) * | 2019-01-31 | 2020-03-06 | 江苏恒捷电气有限公司 | Cement prefabricated pipe |
| CN210152382U (en) * | 2019-05-20 | 2020-03-17 | 青岛中万方能源科技有限公司 | Steel pipe pole |
| CN210396320U (en) * | 2019-07-26 | 2020-04-24 | 权峰 | Line hanging support for 10kv line construction site |
-
2020
- 2020-07-28 CN CN202010735139.6A patent/CN111852163A/en active Pending
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|---|---|---|---|---|
| CN102733639A (en) * | 2011-03-31 | 2012-10-17 | 河南省电力公司济源供电公司 | Electric pole under bracing member |
| ES2524840A1 (en) * | 2014-06-06 | 2014-12-12 | Esteyco Energía | Foundation system for towers and installation procedure of the foundation system for towers (Machine-translation by Google Translate, not legally binding) |
| CN205688925U (en) * | 2016-06-27 | 2016-11-16 | 内蒙古通维水泥制品有限公司 | A kind of prestressed concrete electric pole |
| CN207096212U (en) * | 2017-07-19 | 2018-03-13 | 泛测（北京）环境科技有限公司 | Air monitor |
| CN207944767U (en) * | 2018-02-06 | 2018-10-09 | 青岛海瑞普电力科技有限公司 | Prestressed concrete pole |
| CN208534163U (en) * | 2018-07-12 | 2019-02-22 | 国网浙江省电力有限公司丽水供电公司 | A kind of hollow sandwich high tensile steel tube concurrent |
| CN208781757U (en) * | 2018-09-05 | 2019-04-23 | 中国石化集团胜利石油管理局有限公司电力分公司 | A kind of mounting structure of outdoor high-voltage isolating switch |
| CN208981886U (en) * | 2018-09-05 | 2019-06-14 | 广东宇信水泥制品有限公司 | A kind of admixture high energy fiber-reactive powder concrete electrical pole |
| CN210127527U (en) * | 2019-01-31 | 2020-03-06 | 江苏恒捷电气有限公司 | Cement prefabricated pipe |
| CN210152382U (en) * | 2019-05-20 | 2020-03-17 | 青岛中万方能源科技有限公司 | Steel pipe pole |
| CN210396320U (en) * | 2019-07-26 | 2020-04-24 | 权峰 | Line hanging support for 10kv line construction site |
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Application publication date: 20201030 |