CN214532234U - Composite cross arm and power transmission tower - Google Patents
Composite cross arm and power transmission tower Download PDFInfo
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- CN214532234U CN214532234U CN202022866885.7U CN202022866885U CN214532234U CN 214532234 U CN214532234 U CN 214532234U CN 202022866885 U CN202022866885 U CN 202022866885U CN 214532234 U CN214532234 U CN 214532234U
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- post insulator
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Abstract
The application discloses a composite cross arm which is fixed on a tower body of a power transmission tower and comprises at least one cross arm group, wherein the cross arm group comprises at least two post insulators and two connecting pieces; the two connecting pieces are arranged in parallel, and two ends of each post insulator are respectively connected to the two connecting pieces; the connecting piece includes interior connecting piece and outer connecting piece, and outer connecting piece sets up wire connecting device. The application also discloses a transmission tower, and transmission tower includes the body of the tower and at least one above-mentioned compound cross arm of fixing on the body of the tower. Compared with other composite cross arms and power transmission towers, the composite cross arm and the power transmission tower adopt the short post insulator, the high strength of the short post insulator and the strength advantage of the extension piece are fully utilized, and the diagonal insulator is omitted, so that the cost of the power transmission tower engineering is reduced, the electrical performance of the composite cross arm is ensured, and the market utilization rate of the composite cross arm is expanded.
Description
Technical Field
The application relates to the field of power transmission insulating equipment, in particular to a composite cross arm and a power transmission tower.
Background
At present, the composite cross arm is widely applied to overhead transmission lines as a novel material. Common composite cross arm types include single-column type, single-column single-pull type, single-column three-pull type, double-column single-pull type and double-column double-pull type. These cross arm types are typically relatively expensive to build on overhead transmission towers because the high strength characteristics of composite members are not fully realized. Particularly, for the voltage class of 110kV and below, because the cost of the transmission tower project is not very high under the voltage class, and the cost of the transmission tower project is high due to the adoption of the common cross arm type, the adoption of the existing cross arm type is not favorable for the popularization and the use of the composite cross arm in the voltage class of 110kV and below, and a new composite cross arm type needs to be developed to meet the use requirement in the voltage class range.
SUMMERY OF THE UTILITY MODEL
The utility model aims at not enough to prior art, the utility model aims at providing a compound cross arm, this compound cross arm adopt the short-strut insulator, have utilized the high advantage of short-strut insulator intensity, save and draw the insulator to one side to reduce the cost of transmission tower engineering, guaranteed the electrical property of compound cross arm simultaneously, extend the market rate of utilization of compound cross arm.
In order to achieve the above object, the present invention adopts the following technical means: a composite cross arm is fixed on a tower body of a power transmission tower and comprises at least one cross arm group, wherein the cross arm group comprises at least two post insulators and two connecting pieces; the two connecting pieces are arranged in parallel, and two ends of each post insulator are respectively connected to the two connecting pieces; the connecting piece includes interior connecting piece and outer connecting piece, and outer connecting piece sets up wire connecting device. Compared with a post insulator, the arrangement of at least two post insulators increases the strength and the rigidity bearing capacity of the composite cross arm, ensures that the composite cross arm is small in deformation and cannot be damaged, and simultaneously ensures the electrical performance of the composite cross arm. Compared with other composite cross arms, the composite cross arm adopts the short post insulator, utilizes the advantage of high strength of the short post insulator, and omits a cable-stayed insulator, thereby reducing the cost of power transmission tower engineering and expanding the market utilization rate of the composite cross arm.
Preferably, the post insulators are parallel to each other. The two ends of the pillar insulators which are parallel to each other are respectively connected to the two connecting pieces which are parallel to each other to form a composite cross arm structure with a rectangular cross section, and the structure enables the bending resistance and the compression resistance of the composite cross arm to be higher.
Preferably, the composite cross arm further comprises an extension member connected to the inner connecting member. Aiming at the 35kV voltage level, a composite cross arm formed by a cross arm group can be directly adopted; aiming at the voltage class of 35kV-110kV, the width of a required cross arm exceeds the length of a cross arm group, and because the composite support component has a scale effect, the longer the component length is, the more serious the reduction of the strength is, so an extension piece is arranged at the moment, the material of the extension piece is made of steel, the bending strength is higher than that of a composite material, the composite cross arm structure fully utilizes the strength advantages of the high strength of a short support insulator and the strength of the extension piece, and a diagonal insulator is omitted, so that the cost of the power transmission tower engineering is reduced, and the market utilization rate of the composite cross arm is expanded.
More preferably, there are two post insulators and two extension pieces, and the extension pieces are provided along the axial direction of the post insulators. The bending resistance and the compression resistance bearing capacity of the composite cross arm can be higher.
Preferably, the post insulator comprises a T-shaped flange, the T-shaped flange comprises a first transverse plate arranged parallel to the axial direction of the post insulator and a first vertical plate perpendicular to the first transverse plate, and the first transverse plate is connected with the inner connecting piece. The T-flange is provided for better connection with the extension member and the inner connecting member.
Preferably, the extension piece includes two L type angle steel, and two L type angle steel centre gripping are fixed riser, and two L type angle steel simultaneously with first diaphragm and in-connection piece fixed connection.
Preferably, the extension piece is a T-shaped angle steel and comprises a second transverse plate and a second vertical plate perpendicular to the second transverse plate, a groove is formed in the end portion of the second vertical plate, and the groove is used for accommodating the first vertical plate. Compare in the structure of two fixed risers of L type angle steel centre gripping, the mechanical strength of the T type angle steel that sets up the recess is better, and bending resistance, resistance to compression bearing capacity are higher.
Preferably, the composite cross arm is a double-arm cross arm, and both ends of the extension piece are connected with the cross arm group. The requirement of hanging wires at two ends of the power transmission tower can be met.
Preferably, the post insulator comprises an outer flange, the outer flange is connected with an outer connecting piece, and the outer connecting piece is an angle steel.
According to the utility model discloses a transmission tower is provided in another aspect, including body of the tower and at least one compound cross arm of fixing on the body of the tower, compound cross arm is foretell compound cross arm structure.
Drawings
Fig. 1 is a schematic structural diagram of a composite cross arm 100 according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a composite cross arm 200 according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a composite cross arm 300 according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a transmission tower 1000 according to a fourth embodiment of the present invention;
fig. 5 is a partial schematic view of a transmission tower 1000 according to a fourth embodiment of the present invention;
fig. 6 is a partial schematic view of a transmission tower 2000 according to a fifth embodiment of the present invention;
fig. 7 is a partial schematic view of a transmission tower 3000 according to a sixth embodiment of the present invention.
Detailed Description
As required, detailed embodiments of the present invention will be disclosed herein. However, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed manner, including employing various features disclosed herein in connection with which such features may not be explicitly disclosed.
The first embodiment is as follows:
as shown in fig. 1, the present embodiment provides a composite cross arm 100, the composite cross arm 100 includes a cross arm group 190, the cross arm group 190 includes two post insulators 110, an inner connecting member 120, and an outer connecting member 130; the inner connecting member 120 and the outer connecting member 130 are arranged in parallel, the two post insulators 110 are also arranged in parallel, two ends of each post insulator 110 are connected to the inner connecting member 120 and the outer connecting member 130 which are arranged in parallel, respectively, so as to form a composite cross arm 100 with a rectangular structure, and the outer connecting member 130 is provided with a wire hanging hardware string 140 serving as a wire connecting device for hanging a wire. The composite cross arm 100 is simple in structure, the short post insulator 110 is adopted, the advantage of high strength of the short post insulator 110 is utilized, and a diagonal insulator is omitted, so that the cost of the power transmission tower engineering is reduced, and the market utilization rate of the composite cross arm 100 is expanded. The parallel structure of the two columns ensures the electrical performance of the composite cross arm 100, shortens the length of the post insulator 110, and enables the bending resistance and the compression resistance of the composite cross arm 100 to be higher.
In the present embodiment, the number of post insulators 110 is two, and the arrangement of two post insulators 110 has higher strength and rigidity bearing capacity than the arrangement of only one post insulator 110.
In other embodiments, the number of the post insulators may be two or more, and the post insulators are designed according to the mechanical performance requirement and the electrical performance requirement of the composite cross arm as long as both ends of the post insulators are connected to the inner connecting member and the outer connecting member.
In this embodiment, post insulator 110 is no longer than 1.1 meters in length. Because the post insulator 110 has a scale effect, the longer the post insulator 110 is, the more the strength of the post insulator is reduced, so that the strength advantage of the composite material can be exerted by shortening the post insulator 110. The length of the post insulator 110 is not more than 1.1 m, which not only ensures the width required by the composite cross arm 100, but also ensures the bending strength required by the composite cross arm 100.
In other embodiments, the length of the post insulator may be other lengths, such as approximately 1.1 meters, as long as the width and bending strength required for the composite cross arm are met.
In this embodiment, post insulator 110 comprises a solid circular cross-section mandrel. The bending strength is higher and easy to obtain, and special manufacture is not needed.
In other embodiments, the post insulator may be a post insulator inflated with air or polyurethane, or may be another post insulator, and the cross section of the core rod is not limited to be circular, square, i-shaped, or the like.
In other embodiments, the relative position of the post insulators can be other than parallel, such as forming a trapezoid structure with the connecting members, etc., as long as the two connecting members parallel to each other are connected to each other and are in the same plane.
In this embodiment, the post insulator 110 includes a T-shaped flange 111, the T-shaped flange 111 includes a first horizontal plate 112 parallel to the axial direction of the post insulator 110 and a first vertical plate 113 perpendicular to the first horizontal plate 112, and a plurality of through holes are disposed on the first horizontal plate 112 and the first vertical plate 113; the inner connecting piece 120 is an L-shaped angle steel, a through hole corresponding to the through hole on the first transverse plate 112 is formed in the inner connecting piece 120, and the first transverse plate 112 is connected with the inner connecting piece 120 through a bolt, so that the inner connecting piece is convenient to mount and dismount. The provision of T-flange 111 facilitates better connection of composite cross arm 100 to other devices to ensure the bending strength of composite cross arm 100.
In other embodiments, the flange and the inner connecting member may have other structures as long as the connection between the post insulator and the inner connecting member is achieved. For example, the inner connecting piece can be a steel plate, the flange can be a straight flange, and the straight flange is less than the T-shaped flange in a first vertical plate and only has a first transverse plate arranged in parallel to the axial direction of the post insulator. The connecting positions of the inner connecting piece and the straight flange are provided with through holes which are connected with each other through bolts.
In this embodiment, the post insulator 110 further includes an outer flange 114, the outer flange 114 includes a base 115 and a sleeve 116, the sleeve 116 is a portion of the outer flange 114 fixedly connected to the core rod of the post insulator 110, the base 115 is a rectangular plate perpendicular to one end of the sleeve 116, the length of the base 115 is greater than the diameter of the sleeve 116, and a plurality of through holes are formed in a portion of the base 115 protruding relative to the sleeve 116; the outer connecting member 130 comprises two L-shaped angle steels 131, each L-shaped angle steel 131 comprises a first limb back 132 and a second limb back 133, the two first limb backs 132 of the two L-shaped angle steels 131 are arranged in parallel with each other and have a gap for clamping a protruding part of the fixing base 115 relative to the sleeve 116, and the two second limb backs 133 are positioned on the same horizontal plane, so that the two L-shaped angle steels 131 are arranged in a T-shaped structure; the end part of the first limb back 132 is provided with a through hole corresponding to the through hole on the base 115, and the two first limb backs 132 are matched with the through hole through bolts to clamp and fix the base 115; the middle portion of the outer connecting member 130 is provided with a through hole for connecting the string 140, and the middle portion does not refer to the middle of the outer connecting member 130, but refers to other regions except for the outer connecting member 130 clamping the fixing base 115. The outer flange 114 and outer connector 130 are simple in construction and are easily accessible and replaceable.
In other embodiments, the flange and the outer connector may have other structures as long as the post insulators can be connected to each other and the outer connector can be connected to the wire fixing device. For example, the base of the outer flange is a circular plate, a triangular plate, a trapezoidal plate or the like, the outer connecting piece is a steel plate with the length equal to the distance between the two pillar insulators, and through holes are formed in the corresponding positions where the base and the steel plate are connected through bolts. Alternatively, the outer flange and outer connector configuration may be referred to as the T-flange and inner connector configuration. The lead fixing device is not limited to the wire hanging hardware string, and can be any other device capable of connecting the lead.
In other embodiments, the connection modes between the post insulator, the inner connecting member and the outer connecting member may also be welding, as long as effective connection can be ensured.
In this embodiment, the two post insulators 110 have the same structure, and the outer flanges 114 and the T-shaped flanges 111 at both ends thereof are also the same. So that the composite cross arm 100 is stressed uniformly and has higher bending strength.
In other embodiments, the two post insulators may be of different configurations, for example, one post insulator comprising a solid round section mandrel and the other post insulator comprising a solid square section mandrel. Or the base of one outer flange is a rectangular plate, and the base of the other outer flange is a circular plate, which is not limited in the present application.
The composite cross arm 100 of the embodiment has a simple structure, and compared with other composite cross arm types, the composite cross arm 100 adopts the short post insulator 110, utilizes the advantage of high strength of the short post insulator 110, and omits a diagonal insulator, thereby reducing the cost of the power transmission tower project and expanding the market utilization rate of the composite cross arm. The parallel structure of the two columns ensures the electrical performance of the composite cross arm 100, shortens the length of the post insulator 110, and enables the bending resistance and the compression resistance of the composite cross arm 100 to be higher.
Example two:
as shown in fig. 2, the present embodiment provides a composite cross arm 200, which is different from the first embodiment in that the composite cross arm 200 of the present embodiment includes two extension members 250 in addition to one cross arm set 290.
In this embodiment, the extension member 250 includes two L-shaped angle steels 251, the L-shaped angle steels 251 include a first limb back 252 and a second limb back 253, the two first limb backs 252 are disposed parallel to each other and have a gap for clamping and fixing the first riser 213, and the two second limb backs 253 are located on the same horizontal plane, so that the two L-shaped angle steels 251 are arranged in a T-shaped structure. The end of the first limb back 252 is provided with a through hole corresponding to the position of the through hole on the first vertical plate 213, and the end of the second limb back 253 is provided with a through hole corresponding to the position of the through hole on the first horizontal plate 212. The inner connecting member 220 is an L-shaped angle steel, two first limb backs 252 of the two L-shaped angle steels 251 are matched with the through holes through bolts to clamp and fix the first vertical plate 213, and two second limb backs 253 and the inner connecting member 220 are matched with the through holes through bolts to clamp and fix the first transverse plate 212.
In other embodiments, the extension member may be of other configurations or materials, as long as it can be connected to the cross-arm assembly and meet the desired bending strength of the cross-arm. For example, the extension piece can be a T-shaped angle steel with a groove at the end, the extension piece comprises a second transverse plate and a second vertical plate perpendicular to the second transverse plate, the end of the second vertical plate is provided with a groove, and the groove is used for accommodating a first vertical plate of the T-shaped flange.
In this embodiment, the extension member 250 is disposed along the axial direction of the post insulator 210 and is connected to the inner connecting member 220 and the post insulator 210. Aiming at the voltage class of 35kV to 110kV, the width of the needed cross arm exceeds the length of the cross arm group, because the composite support component has a scale effect, the longer the component length is, the more serious the reduction of the strength is, so the extension piece 250 is arranged at the moment, the material of the extension piece 250 is steel, the bending strength is higher than that of the composite material, the composite cross arm 200 utilizes the advantages of high strength of the short support insulator 210 and the strength of the extension piece 250, and the diagonal insulator is omitted, thereby reducing the cost of the power transmission tower engineering and expanding the market utilization rate of the composite cross arm 200.
In this embodiment, the number of the extension members 250 is two and is simultaneously connected to the T-shaped flange 211 and the inner connecting member 220. So that the composite cross arm 200 is more uniformly stressed and has higher bending strength.
In other embodiments, the number of the extension members is not limited, and the connection manner is not limited, and the extension members may be directly connected to the post insulators, or directly connected to the inner connection members, and is not limited to the necessity of simultaneously connecting the post insulators and the inner connection members. When the extension piece is one, it needs to be in the middle part position of in-connection piece to the atress of balanced cross arm group, the extension piece at this moment can be the steel sheet of a broad, and the one end of steel sheet sets up a plurality of through-holes, and the middle part of in-connection piece also sets up corresponding through-hole, and the steel sheet passes through the bolt with the in-connection piece and links to each other, and the steel sheet is located the below of in-connection piece and plays the supporting role. The intermediate portion here is not an absolute intermediate portion, and some variation is acceptable.
The composite cross arm 200 of the embodiment utilizes the advantages of high strength of the short post insulator 210 and strength of the extension piece 250, and omits a diagonal tension insulator, thereby reducing the cost of the power transmission tower project and expanding the market utilization rate of the composite cross arm 200.
Example three:
as shown in fig. 3, the present embodiment provides a composite cross arm 300, which is different from the second embodiment in that the composite cross arm 300 of the present embodiment includes two cross arm groups 390.
In this embodiment, two cross arm sets 390 are provided at both ends of the two extension pieces 350, respectively. Both cross arm sets 390 are connected to the elongate member 350 by a T-flange 311 and an inner connector 320. The cross arm set 390 is the same cross arm set as the cross arm set 290, the extension 350 is identical in structure to the extension 250, and the extension 350 is longer than the extension 250 depending on the application environment. When the double-arm cross arm needs to be positioned on the same horizontal plane, the composite cross arm 300 in the embodiment is used, so that the installation and the replacement are more rapid and convenient.
Example four:
as shown in fig. 4, the present embodiment provides a transmission tower 1000, and the transmission tower 1000 includes a tower body 1100 and the composite cross arm 100.
In this embodiment, three composite cross arms 100 are installed on the power transmission tower 1000, one composite cross arm 100 is separately installed, and the other two composite cross arms 100 are symmetrically installed on two sides of the tower body 1100, so as to meet different wire hanging requirements.
As shown in fig. 5, in this embodiment, the tower 1100 includes two reinforcing angle steels 1110 and a tower body angle 1130, the reinforcing angle steel 1110 includes two L-shaped angle steels 1120, and the reinforcing angle steel 1110 is used to connect and fix two post insulators 110 and is connected to the tower body angle 1130. The L-shaped angle 1120 includes a first limb back 1121 and a second limb back 1122, the two first limb backs 1121 are disposed in parallel and have a gap therebetween, the gap is used for clamping and fixing the first vertical plate 113, and the two second limb backs 1122 are located on the same horizontal plane, so that the two L-shaped angle 1120 are arranged in a T-shaped structure. The end of the first limb back 1121 is provided with a through hole corresponding to the through hole on the first vertical plate 113, and the end of the second limb back 1122 is provided with a through hole corresponding to the through hole on the first horizontal plate 112. The inner connecting member 120 is an L-shaped angle steel, two first limb backs 1121 of the two L-shaped angle steels 1120 are matched with the through holes through bolts to clamp and fix the first vertical plate 113, and two second limb backs 1122 and the inner connecting member 120 are matched with the through holes through bolts to clamp and fix the first transverse plate 112. The angle steel 1110 is also connected to the tower body angle steel 1130, making the connection of the composite cross arm 100 to the tower body 1100 more reliable.
In other embodiments, the number of composite crossarms installed on the transmission tower is not limited, and may be one, two, three or even more, as the case may be. The relative position of each composite cross arm is not limited, and the composite cross arms can be symmetrically arranged on the same horizontal plane or can be arranged on two sides of the power transmission tower but not on the same horizontal plane. The connection mode of the composite cross arm and the tower body is not limited to bolt connection, and other modes such as welding can be adopted, so long as the effective connection of the composite cross arm and the tower body can be ensured.
The power transmission tower 1000 of the embodiment is provided with the composite cross arm 100, and the advantage of high strength of the short post insulator 110 is utilized, so that the diagonal insulator is omitted, and the cost of the power transmission tower project is reduced.
Example five:
as shown in fig. 6, the present embodiment provides a transmission tower 2000, and the transmission tower 2000 includes a tower body 2100 and the composite cross arm 200.
In this embodiment, only one composite cross arm 200 is provided on the transmission tower 2000, and the extension piece 250 of the cross arm 200 and the angle steel 2110 on the tower body are both provided with through holes corresponding in position and connected through bolts.
In other embodiments, any number of composite cross arms may be included in the transmission tower, and the connection between the extension piece and the tower body is not limited to bolt connection, and may be performed by welding or the like. When more than one composite cross arm is included, the relative position between the composite cross arms is not specially required.
The power transmission tower 2000 of the embodiment is provided with the composite cross arm 200, so that the advantages of high strength of the short post insulator 210 and strength of the extension piece 250 are fully utilized, and a diagonal insulator is omitted, thereby reducing the cost of the power transmission tower project.
Example six:
as shown in fig. 7, the present embodiment provides a transmission tower 3000, and the transmission tower 3000 includes a body 3100 and the composite cross arm 300.
In this embodiment, the extension pieces 350 of the composite cross arm 300 pass through the tower body 3100, and the extension pieces 350 extending out of both sides of the tower body are equal in length, so that two composite cross arm sets 390 are symmetrically disposed on both sides of the tower body 3100. The requirement of double-arm cross arms can be realized by installing an extension piece 350, and compared with the condition that composite cross arms are needed to be arranged at two ends respectively, the double-arm cross arm is more convenient and quicker to install or disassemble.
In other embodiments, the extension may not extend as far as the cross arm width requirements for the corresponding voltage class are met.
In this embodiment, the extension part 350 and the angle steel 3110 on the tower body are both provided with through holes corresponding in position and connected through bolts, so as to facilitate installation and disassembly.
In other embodiments, the number of composite cross arms provided on the transmission tower is not limited, nor is the relative position of each composite cross arm. The connection mode of the extension piece and the tower body is not limited to bolt connection, and the composite cross arm and the tower body can be effectively connected as long as the composite cross arm and the tower body can be ensured.
While the invention has been described with reference to the above disclosure, it will be understood by those skilled in the art that various changes and modifications in the above-described structures and materials, including combinations of features disclosed herein either individually or in any combination, will be apparent to one skilled in the art from the disclosure herein. These variants and/or combinations fall within the technical field of the present invention and are intended to be protected by the following claims.
Claims (10)
1. The utility model provides a compound cross arm, fixes on the body of transmission tower, its characterized in that: the cross arm group comprises at least two post insulators and two connecting pieces;
the two connecting pieces are arranged in parallel, and two ends of each post insulator are respectively connected to the two connecting pieces;
the connecting piece comprises an inner connecting piece and an outer connecting piece, and the outer connecting piece is provided with a wire connecting device.
2. The composite cross arm of claim 1, wherein: the post insulators are parallel to each other.
3. The composite cross arm of claim 1, wherein: the connector also comprises an extension piece, and the extension piece is connected with the inner connecting piece.
4. The composite cross arm of claim 3, wherein: the post insulator is two, the extension piece is two, just the extension piece is followed post insulator's axis direction sets up.
5. The composite cross arm of claim 4, wherein: the post insulator comprises a T-shaped flange, the T-shaped flange comprises a first transverse plate and a first vertical plate, the first transverse plate is parallel to the axis direction of the post insulator, the first vertical plate is perpendicular to the first transverse plate, and the first transverse plate is connected with the inner connecting piece.
6. The composite cross arm of claim 5, wherein: the extension piece includes two L type angle steel, two L type angle steel centre gripping are fixed the first riser, just two L type angle steel simultaneously with first diaphragm with in-connection spare fixed connection.
7. The composite cross arm of claim 5, wherein: the extension piece is T type angle steel, including second diaphragm and a perpendicular to the second riser of second diaphragm, the tip of second riser sets up the recess, the recess holds first riser.
8. The composite cross arm of claim 3, wherein: the composite cross arm is a double-arm cross arm, and the two ends of the extension piece are connected with the cross arm group.
9. The composite cross arm of claim 1, wherein: the post insulator comprises an outer flange, the outer flange is connected with the outer connecting piece, and the outer connecting piece is an angle steel.
10. A transmission tower comprising a tower body and at least one composite cross arm secured to the tower body, wherein: the composite cross arm as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022866885.7U CN214532234U (en) | 2020-12-03 | 2020-12-03 | Composite cross arm and power transmission tower |
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| CN202022866885.7U CN214532234U (en) | 2020-12-03 | 2020-12-03 | Composite cross arm and power transmission tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482650A (en) * | 2022-01-18 | 2022-05-13 | 江苏神马电力股份有限公司 | Power transformation framework |
| CN114498511A (en) * | 2022-01-18 | 2022-05-13 | 江苏神马电力股份有限公司 | Power transformation framework |
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2020
- 2020-12-03 CN CN202022866885.7U patent/CN214532234U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482650A (en) * | 2022-01-18 | 2022-05-13 | 江苏神马电力股份有限公司 | Power transformation framework |
| CN114498511A (en) * | 2022-01-18 | 2022-05-13 | 江苏神马电力股份有限公司 | Power transformation framework |
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Address after: 200050 room 801, building 2, No. 55, Jinlun Road, Changning District, Shanghai Patentee after: Shanghai Shenma Electric Power Engineering Co.,Ltd. Address before: 501, building g, Hongqiao Green Valley, 69 Yonghong Road, Minhang District, Shanghai 201100 Patentee before: Shanghai Shenma Electric Power Engineering Co.,Ltd. |
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