CN111706147B - Electric power cross arm - Google Patents
Electric power cross arm Download PDFInfo
- Publication number
- CN111706147B CN111706147B CN202010594745.0A CN202010594745A CN111706147B CN 111706147 B CN111706147 B CN 111706147B CN 202010594745 A CN202010594745 A CN 202010594745A CN 111706147 B CN111706147 B CN 111706147B
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- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims description 47
- 239000012212 insulator Substances 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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)
- Clamps And Clips (AREA)
Abstract
The invention relates to an electric cross arm which comprises connecting rods, clamping devices, locking devices and fixing devices, wherein the connecting rods are symmetrically arranged at the left end and the right end of each clamping device, the two connecting rods are connected through the locking devices, and the fixing devices are uniformly arranged on the upper end faces of the connecting rods. According to the invention, the clamping convex blocks and the clamping grooves are in concave-convex fit, so that the stability of the clamping device is ensured, the clamping mechanism is uniformly arranged on the inner wall of the stepped hole along the circumferential direction of the stepped hole, the locking function is realized, the clamping device is prevented from loosening, the rectangular groove is formed in the connecting rod, the fixing element is arranged in the rectangular groove, the service life of the fixing element is prolonged, and the mounting space is saved due to the detachable design of the rotating handle.
Description
Technical Field
The invention relates to the technical field of power accessories, in particular to a power cross arm.
Background
The electric cross arm is an important component in a tower and is used for installing insulators and hardware fittings so as to support a conducting wire and a lightning conductor and keep a certain safety distance according to regulations.
In the installation process of the electric cross arm, the following problems also generally exist:
(1) in the installation process, because the fixing mode to the electric power cross arm is too single, the steadiness of the electric power cross arm in the use process can not be ensured, and the looseness caused by various reasons can not be prevented.
(2) Because the electric power cross arm is installed outdoors, the faced environment is relatively severe, and the service life of parts on the electric power cross arm cannot be ensured.
In order to solve the above problems, the present invention provides an electric crossarm.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: an electric power cross arm comprises connecting rods, clamping devices, locking devices and fixing devices, wherein the connecting rods are symmetrically arranged at the left end and the right end of each clamping device, the two connecting rods are connected through the locking devices, and the fixing devices are uniformly arranged on the upper end faces of the connecting rods;
the clamping device comprises a left clamping block, a right clamping block, a clamping lug, a clamping groove, an auxiliary locking rod and a clamping mechanism, wherein the left clamping block and the right clamping block are both arranged on corresponding connecting rods, the left clamping block and the right clamping block are both in a U-shaped structure, the clamping lugs are symmetrically arranged on the upper side and the lower side of the left clamping block, and the clamping grooves matched with the clamping lugs are symmetrically arranged on the upper side and the lower side of the right clamping block; a first locking groove is formed in the left clamping block, a cross groove is formed in the clamping convex block, the first locking groove is communicated with the cross groove, a second locking groove communicated with the clamping groove is formed in the right clamping block, clamping mechanisms are arranged in the first locking groove and the second locking groove, and the first locking groove and the second locking groove are identical in structure;
sliding holes are uniformly formed in the left clamping block and the right clamping block, guide holes communicated with the sliding holes are formed in the connecting rod, an auxiliary locking rod is installed in each guide hole through a spring, one end of each auxiliary locking rod is located in each sliding hole, the other end of each auxiliary locking rod is connected to the locking device, and traction holes are symmetrically formed in the front side and the rear side of each connecting rod;
when the clamping mechanism works, the right clamping block drives the clamping groove to move leftwards, when the clamping groove moves to the position matched with the clamping convex block on the left clamping block in a concave-convex mode, the clamping mechanism is driven to move, and when the clamping convex block is matched with the clamping groove in a concave-convex mode, the left clamping block is tightly attached to the inner wall of the right clamping block and the outer wall of a telegraph pole, so that the telegraph pole is clamped.
The locking device comprises a fixed rod, a connecting column, a clamping mechanism, a clamping driving block and a connecting screw rod, the fixed rod is installed on the auxiliary locking rod, the connecting column is symmetrically arranged on the fixed rod positioned on the left side, a stepped hole is formed in the right end of the connecting column, threads are arranged in the stepped hole, the clamping mechanism is uniformly arranged on the inner wall of the stepped hole along the circumferential direction of the stepped hole, the connecting screw rod is symmetrically installed on the front side and the rear side of the fixed rod positioned on the right side, and the clamping driving block is arranged; during operation, the connecting screw rod rotates through the screw-thread fit and drives the clamping driving block on the outer wall of the connecting screw rod to move leftwards, when the clamping driving block moves to the position matched with the clamping mechanism, the clamping driving block drives the clamping mechanism to move upwards, and the locking function is realized through the clamping mechanism.
The fixing device comprises an insulator, a fixing plate, a threaded push rod, a threaded disc and a rotating handle, wherein the insulator is installed on the fixing plate, mounting holes matched with the fixing plate are symmetrically formed in the connecting rod in a left-right mode, a rectangular groove is formed in the connecting rod, the threaded disc is installed at the bottom of the rectangular groove in a rotating mode, the threaded push rod is symmetrically installed on the left side and the right side of the upper end of the threaded disc in a threaded matching mode, fixing holes matched with the threaded push rod are symmetrically formed in the left side and the right side of the rectangular groove and communicated with the mounting holes, and square grooves matched with the rotating handle are formed in; the during operation will rotate the handle and insert the square groove of matched with and rotate, rotates the handle and rotates and drive the screw thread dish and rotate, and the screw thread dish drives the screw thread push rod through screw-thread fit and removes, when the screw thread push rod removed and moved the fixed orifices of both sides to both sides, fixes the insulator, can take off the rotation handle afterwards. Through set up the rectangular channel in the connecting rod to and the design of can dismantling of rotating handle, saved installation space greatly.
Preferably, the clamping mechanism comprises a spring extrusion rod, an extrusion block, an execution spring rod and an execution extrusion block, the spring extrusion rod is horizontally arranged in the first locking groove in a sliding fit mode, the extrusion block is arranged on the spring extrusion rod, the side wall of the extrusion block abuts against the execution spring rod, the execution spring rod is vertically arranged in the first locking groove in a sliding fit mode, and the execution extrusion block is installed on the execution spring rod; when the clamping device works, when the clamping convex block is in concave-convex fit with the clamping groove, the spring extrusion rods on the two sides extrude mutually, the extrusion blocks are driven to move towards the two sides through extrusion force, and then the extrusion blocks drive the execution extrusion blocks on the execution spring rods to move downwards to clamp the telegraph pole, so that the stability of the clamping device is improved.
Preferably, the clamping mechanism comprises a clamping rod and a transverse plate, clamping holes are uniformly formed in the connecting column and communicated with the stepped hole, the clamping rod is arranged in the clamping hole through a spring, the lower end of the clamping rod is connected with the transverse plate, the right end of the transverse plate is an inclined plane with gradually decreased height from right to left, and the surface of the clamping driving block, which is matched with the transverse plate, is an inclined plane parallel to the transverse plate; during operation, the clamping driving block drives the transverse plate to move upwards, the transverse plate moves upwards to drive the clamping rod to move upwards and to be matched with the clamping hole in the connecting column, the locking function is realized, and the clamping device is prevented from loosening.
Preferably, the first locking groove is composed of a vertical cavity vertically formed in the left clamping block and a horizontal cavity horizontally formed in the left clamping block, the first locking groove is of a T-shaped structure, a through hole is formed in the right clamping block and communicated with the clamping groove, and the cross groove, the vertical cavity and the through hole are the same in size; when the clamping convex block is in concave-convex fit with the clamping groove, the cross groove, the vertical cavity and the through hole are overlapped in position and fixed through the pin shaft, so that the stability of the clamping device is improved.
Preferably, the spring extrusion rod positioned in the first locking groove penetrates through the cross groove and extends to the right side of the clamping convex block, and a fixing hole matched with the cross groove is formed in the spring extrusion rod.
Preferably, the spring extrusion rod inside the second locking groove extends into the clamping groove.
Preferably, the inner wall of the traction hole is uniformly provided with positioning holes matched with the clamping rod to move.
The invention has the beneficial effects that:
1. according to the invention, the clamping convex blocks and the clamping grooves are in concave-convex fit, so that the stability of the clamping device is ensured, the clamping mechanism is uniformly arranged on the inner wall of the stepped hole along the circumferential direction of the stepped hole, the locking function is realized, the clamping device is prevented from loosening, the rectangular groove is formed in the connecting rod, the fixing element is arranged in the rectangular groove, the service life of the fixing element is prolonged, and the mounting space is saved due to the detachable design of the rotating handle.
2. The clamping device provided by the invention drives the spring extrusion rods on the two sides to extrude through the concave-convex matching of the clamping convex block and the clamping groove, then the spring extrusion rods drive the extrusion blocks to move towards the two sides, and the extrusion blocks drive the execution extrusion blocks on the execution spring rods to move downwards to clamp the telegraph pole, so that the stability of the clamping device is improved.
3. According to the locking device designed by the invention, the transverse plate is driven to move upwards by the clamping driving block, and the transverse plate moves upwards to drive the clamping rod to move upwards and is matched with the clamping hole on the connecting column, so that the locking function is realized, and the clamping device is prevented from loosening.
4. The fixing device designed by the invention has the advantages that the rectangular groove is formed in the connecting rod, the fixing element is arranged in the rectangular groove, the service life of the fixing element is prolonged, the cost is saved, and the mounting space is saved due to the detachable design of the rotating handle.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a top view of the present invention;
FIG. 2 is a cross-sectional view of the clamping assembly, connecting screw and connecting rod of the present invention in cooperation therewith;
FIG. 3 is an enlarged view of a portion of the invention from direction A;
FIG. 4 is an enlarged view of part B of the present invention;
FIG. 5 is a cross-sectional view of the locking device, connecting rod and securing rod of the present invention in cooperation therewith;
fig. 6 is a cross-sectional view of the inventive fastening device in cooperation with a connecting rod.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 6, an electric cross arm comprises a connecting rod 1, a clamping device 2, a locking device 3 and a fixing device 4, wherein the connecting rod 1 is symmetrically installed at the left end and the right end of the clamping device 2, the two connecting rods 1 are connected through the locking device 3, and the fixing device 4 is uniformly arranged on the upper end surface of the connecting rod 1;
the clamping device 2 comprises a left clamping block 21, a right clamping block 22, a left clamping block 23, a clamping groove 24, an auxiliary locking rod 25 and a clamping mechanism 26, wherein the left clamping block 21 and the right clamping block 22 are both arranged on the corresponding connecting rod 1, the left clamping block 21 and the right clamping block 22 are both in a U-shaped structure, clamping convex blocks 23 are symmetrically arranged on the upper side and the lower side of the left clamping block 21, and clamping grooves 24 matched with the clamping convex blocks 23 are symmetrically arranged on the upper side and the lower side of the right clamping block 22; a first locking groove is formed in the left clamping block 21, a cross groove is formed in the clamping convex block 23, the first locking groove is communicated with the cross groove, a second locking groove communicated with the clamping groove 24 is formed in the right clamping block 22, clamping mechanisms 26 are arranged in the first locking groove and the second locking groove, and the first locking groove and the second locking groove are identical in structure;
sliding holes are uniformly formed in the left clamping block 21 and the right clamping block 22, a guide hole communicated with the sliding hole is formed in the connecting rod 1, an auxiliary locking rod 25 is mounted in the guide hole through a spring, one end of the auxiliary locking rod 25 is located in the sliding hole, the other end of the auxiliary locking rod 25 is connected to the locking device 3, and traction holes are symmetrically formed in the front side and the rear side of the connecting rod 1; the inner wall of the traction hole is uniformly provided with positioning holes which are matched with the clamping rod 331 to move; when the telegraph pole clamping mechanism works, the right clamping block 22 drives the clamping groove 24 to move leftwards, when the clamping groove 24 moves to the position matched with the clamping convex block 23 on the left clamping block 21 in a concave-convex mode, the clamping mechanism 26 is driven to move, when the clamping convex block 23 is matched with the clamping groove 24 in a concave-convex mode, the inner wall of the left clamping block 21 and the inner wall of the right clamping block 22 are attached to the outer wall of the telegraph pole tightly, and therefore the telegraph pole is clamped.
The first locking groove is composed of a vertical cavity vertically formed in the left clamping block 21 and a horizontal cavity horizontally formed in the left clamping block 21, the first locking groove is of a T-shaped structure, a through hole is formed in the right clamping block 22 and communicated with the clamping groove 24, and the cross groove, the vertical cavity and the through hole are identical in size; when the clamping lug 23 is in concave-convex fit with the clamping groove 24, the cross groove, the vertical cavity and the through hole are overlapped in position and fixed through the pin shaft, so that the stability of the clamping device 2 is improved.
The clamping mechanism 26 comprises a spring extrusion rod 261, an extrusion block 262, an execution spring rod 263 and an execution extrusion block 264, the spring extrusion rod 261 is horizontally arranged in a first locking groove in a sliding fit mode, the spring extrusion rod 261 positioned in the first locking groove penetrates through a cross groove and extends to the right side of the clamping lug 23, and a fixing hole matched with the cross groove is formed in the spring extrusion rod 261; the spring extrusion rod 261 inside the second locking groove extends into the clamping groove 24; the spring extrusion rod 261 is provided with an extrusion block 262, the side wall of the extrusion block 262 is abutted against an execution spring rod 263, the execution spring rod 263 is vertically arranged in the first locking groove in a sliding fit mode, and the execution extrusion block 264 is installed on the execution spring rod 263; in operation, when the clamping convex block 23 is in concave-convex fit with the clamping groove 24, the spring extrusion rods 261 on the two sides extrude, the extrusion blocks 262 are driven by the extrusion force to move towards the two sides, and the extrusion blocks 262 further drive the execution extrusion blocks 264 on the execution spring rods 263 to move downwards to clamp the telegraph pole, so that the stability of the clamping device 2 is improved.
The locking device 3 comprises a fixing rod 31, a connecting column 32, a clamping mechanism 33, a clamping driving block 34 and a connecting screw rod 35, the fixing rod 31 is installed on the auxiliary locking rod 25, the connecting column 32 is symmetrically arranged on the fixing rod 31 on the left side, a stepped hole is formed in the right end of the connecting column 32, threads are arranged in the stepped hole, the clamping mechanism 33 is uniformly arranged on the inner wall of the stepped hole along the circumferential direction of the stepped hole, the connecting screw rods 35 are symmetrically arranged on the front side and the rear side of the fixing rod 31 on the right side, and the clamping driving block 34 is arranged on the outer; during operation, the connecting screw 35 rotates through screw-thread fit and drives the clamping driving block 34 on the outer wall of the connecting screw 35 to move leftwards, when the clamping driving block 34 moves to the position matched with the clamping mechanism 33, the clamping driving block 34 drives the clamping mechanism 33 to move upwards, and the locking function is realized through the clamping mechanism 33.
The clamping mechanism 33 comprises a clamping rod 331 and a transverse plate 332, clamping holes are uniformly formed in the connecting column 32 and communicated with the stepped holes, the clamping rod 331 is arranged in each clamping hole through a spring, the lower end of each clamping rod 331 is connected with the transverse plate 332, the right end of the transverse plate 332 is an inclined surface with gradually decreased height from right to left, and the surface of the clamping driving block 34 matched with the transverse plate 332 is an inclined surface parallel to the inclined surface; during operation, the clamping driving block 34 drives the transverse plate 332 to move upwards, and the transverse plate 332 moves upwards to drive the clamping rod 331 to move upwards and match with the clamping hole on the connecting column 32, so that the locking function is realized, and the clamping device is prevented from loosening.
The fixing device 4 comprises an insulator 41, a fixing plate 42, a threaded push rod 43, a threaded disc 44 and a rotating handle 45, the insulator 41 is installed on the fixing plate 42, mounting holes matched with the fixing plate 42 are symmetrically formed in the connecting rod 1 in the left-right direction, a rectangular groove is formed in the connecting rod 1, the threaded disc 44 is installed at the bottom of the rectangular groove in a rotating mode, the threaded push rod 43 is symmetrically installed at the left side and the right side of the upper end of the threaded disc 44 in a threaded matching mode, fixing holes matched with the threaded push rod 43 are symmetrically formed in the left side and the right side of the rectangular groove and communicated with the mounting holes, and square grooves matched with the rotating handle 45 are formed in the bottoms of; during operation will rotate handle 45 and insert the square groove of matched with and rotate, rotate handle 45 and rotate and drive screw thread dish 44 and rotate, screw thread dish 44 drives screw thread push rod 43 through screw-thread fit and removes, when screw thread push rod 43 removed to both sides and moved the fixed orifices of both sides, fixed insulator 41, can take off rotation handle 45 afterwards. Through set up the rectangular channel in connecting rod 1 to and the design of can dismantling of rotating handle 45, saved installation space greatly.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides an electric power cross arm, includes connecting rod (1), clamping device (2), locking device (3) and fixing device (4), its characterized in that: the left end and the right end of the clamping device (2) are symmetrically provided with connecting rods (1), the two connecting rods (1) are connected through a locking device (3), and the upper end surfaces of the connecting rods (1) are uniformly provided with fixing devices (4);
the clamping device (2) comprises a left clamping block (21), a right clamping block (22), a clamping convex block (23), a clamping groove (24), an auxiliary locking rod (25) and a clamping mechanism (26), wherein the left clamping block (21) and the right clamping block (22) are both arranged on the corresponding connecting rod (1), the left clamping block (21) and the right clamping block (22) are both in a U-shaped structure, the clamping convex blocks (23) are symmetrically arranged on the upper side and the lower side of the left clamping block (21), and the clamping grooves (24) matched with the clamping convex blocks (23) are symmetrically formed in the upper side and the lower side of the right clamping block (22); a first locking groove is formed in the left clamping block (21), a cross groove is formed in the clamping convex block (23), the first locking groove is communicated with the cross groove, a second locking groove communicated with the clamping groove (24) is formed in the right clamping block (22), clamping mechanisms (26) are arranged in the first locking groove and the second locking groove, and the first locking groove and the second locking groove are identical in structure;
the clamping mechanism (26) comprises a spring extrusion rod (261), an extrusion block (262), an execution spring rod (263) and an execution extrusion block (264), the spring extrusion rod (261) is horizontally arranged in a first locking groove in a sliding fit mode, the extrusion block (262) is arranged on the spring extrusion rod (261), the side wall of the extrusion block (262) abuts against the execution spring rod (263), the execution spring rod (263) is vertically arranged in the first locking groove in a sliding fit mode, and the execution extrusion block (264) is installed on the execution spring rod (263);
sliding holes are uniformly formed in the left clamping block (21) and the right clamping block (22), a guide hole communicated with the sliding hole is formed in the connecting rod (1), an auxiliary locking rod (25) is installed in the guide hole through a spring, one end of the auxiliary locking rod (25) is located in the sliding hole, the other end of the auxiliary locking rod is connected to the locking device (3), and traction holes are symmetrically formed in the front side and the rear side of the connecting rod (1);
the locking device (3) comprises a fixing rod (31), a connecting column (32), a clamping mechanism (33), a clamping driving block (34) and a connecting screw rod (35), the fixing rod (31) is installed on the auxiliary locking rod (25), the connecting column (32) is symmetrically arranged on the fixing rod (31) on the left side, a stepped hole is formed in the right end of the connecting column (32), threads are arranged in the stepped hole, the clamping mechanism (33) is uniformly arranged on the inner wall of the stepped hole along the circumferential direction of the stepped hole, the connecting screw rods (35) are symmetrically arranged on the front side and the rear side of the fixing rod (31) on the right side, and the clamping driving block (34) is arranged on the outer;
fixing device (4) include insulator (41), fixed plate (42), screw thread push rod (43), screw thread dish (44) and rotation handle (45), install on fixed plate (42) insulator (41), the mounting hole of cooperation fixed plate (42) is seted up to bilateral symmetry on connecting rod (1), the rectangular channel has been seted up in connecting rod (1), screw thread dish (44) are installed through the rotation mode to rectangular channel bottom, screw thread push rod (43) are installed through screw-thread fit symmetry in both sides about screw thread dish (44) upper end, the fixed orifices with screw thread push rod (43) matched with is seted up to the rectangular channel left and right sides symmetry, and fixed orifices and mounting hole intercommunication.
2. An electrical cross-arm according to claim 1, wherein: the clamping mechanism (33) comprises a clamping rod (331) and a transverse plate (332), clamping holes are uniformly formed in the connecting column (32), the clamping holes are communicated with the stepped holes, the clamping rod (331) is arranged in the clamping holes through a spring, the lower end of the clamping rod (331) is connected with the transverse plate (332), the right end of the transverse plate (332) is an inclined plane with the height gradually decreased from the right side to the left side, and the surface, matched with the transverse plate (332), of the clamping driving block (34) is an inclined plane parallel to the inclined plane.
3. An electrical cross-arm according to claim 1, wherein: a locking groove is composed of a vertical cavity vertically formed in the left clamping block (21) and a horizontal cavity horizontally formed in the left clamping block (21), the locking groove is of a T-shaped structure, a through hole is formed in the right clamping block (22), and the through hole is communicated with the clamping groove (24).
4. An electrical cross-arm according to claim 1, wherein: and a spring extrusion rod (261) positioned in the first locking groove penetrates through the cross groove and extends to the right side of the clamping convex block (23), and a fixing hole matched with the cross groove is formed in the spring extrusion rod (261).
5. An electrical cross-arm according to claim 1, wherein: a spring pressing rod (261) inside the second locking groove extends into the clamping groove (24).
6. An electrical cross-arm according to claim 2, wherein: the inner wall of the traction hole is uniformly provided with positioning holes which are matched with the clamping rod (331) to move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010594745.0A CN111706147B (en) | 2020-06-28 | 2020-06-28 | Electric power cross arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010594745.0A CN111706147B (en) | 2020-06-28 | 2020-06-28 | Electric power cross arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111706147A CN111706147A (en) | 2020-09-25 |
| CN111706147B true CN111706147B (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010594745.0A Active CN111706147B (en) | 2020-06-28 | 2020-06-28 | Electric power cross arm |
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| Country | Link |
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| CN (1) | CN111706147B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113186805B (en) * | 2021-04-13 | 2022-12-13 | 山东大成钢结构工程有限公司 | Prefabricated member of steel structure of assembled bridge |
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| AU2002950037A0 (en) * | 2002-07-08 | 2002-09-12 | Bhp Steel Limited | Utility pole cross-arm and associated pole-top hardware |
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|---|---|---|---|---|
| DE102004015204B4 (en) * | 2004-03-29 | 2008-07-10 | Rolf Wente | Fastening element for fastening a mast to a tubular object |
| CN103730863A (en) * | 2013-12-27 | 2014-04-16 | 国家电网公司 | Adjusting support for electric power circuit pole and tower cross arm |
| CN106286502A (en) * | 2015-06-04 | 2017-01-04 | 天津市鑫祥金属制品有限公司 | A kind of anchor ear |
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| Publication number | Publication date |
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| CN111706147A (en) | 2020-09-25 |
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