CN216665187U - Inverted L-shaped double-loop terminal rod - Google Patents
Inverted L-shaped double-loop terminal rod Download PDFInfo
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- CN216665187U CN216665187U CN202123215488.4U CN202123215488U CN216665187U CN 216665187 U CN216665187 U CN 216665187U CN 202123215488 U CN202123215488 U CN 202123215488U CN 216665187 U CN216665187 U CN 216665187U
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- cross arm
- rod
- steel pipe
- inverted
- pipe pole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The utility model discloses an inverted L-shaped double-loop terminal pole which comprises a steel pipe pole, and a first cross arm, a second cross arm, a third cross arm and a fourth cross arm which are positioned on the same side of the steel pipe pole, wherein the steel pipe pole is vertically arranged, one end of the first cross arm is fixed with the outer peripheral surface of the top end of the steel pipe pole, the second cross arm, the third cross arm and the fourth cross arm are sequentially arranged below the first cross arm in parallel at intervals from top to bottom, one ends of the first cross arm, the third cross arm and the fourth cross arm are respectively fixed with the outer peripheral surface of the steel pipe pole, the first cross arm is a ground wire cross arm, and the second cross arm, the third cross arm and the fourth cross arm are all wire cross arms. The utility model provides a very economic solution for the problem of pipeline position conflict. The size of the steel pipe pole head is optimal, and the steel pipe pole head is more stable and convenient to construct. The shape design of the steel pipe pole body and each cross arm is reasonable, the shape change rule is similar to the internal force change rule of the member, and the performance of the material is fully exerted, so that the material waste is reduced, and the engineering investment is reduced.
Description
Technical Field
The utility model relates to the technical field of power transmission equipment, in particular to an inverted L-shaped double-loop terminal rod.
Background
With the continuous development of power grids, a newly built 110kV overhead transmission line is generally built by adopting a double-loop, and a tower type generally adopts a steel pipe pole at the routing position of the overhead transmission line along the existing road; and both sides of the road often have more pipelines, such as power pipe ditches, rain and sewage pipes, gas pipelines, communication pipelines and the like, and the problem that the positions of the poles and the foundations on the power transmission line path conflict with the positions of the existing buried pipelines can be solved at the moment. The general solutions are two, one is to change the transmission line path and add a corner rod, which increases the engineering investment; the other solution is to move the pipelines influencing the construction of the transmission line, the scheme not only can increase the difficulty of engineering construction and increase the period of the engineering construction, but also has higher cost for moving other pipelines.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in view of the above problems, an object of the present invention is to provide an inverted L-shaped dual-loop terminal rod, which effectively solves the problem of pipeline position conflict, reduces engineering cost, and shortens construction period.
The technical scheme is as follows: the utility model provides a two return circuit terminal poles of shape of falling L, including the steel-pipe pole, and be located the first cross arm of steel-pipe pole with one side, the second cross arm, the third cross arm, the fourth cross arm, the vertical setting of steel-pipe pole, the one end of first cross arm is fixed with the outer peripheral face on steel-pipe pole top, the second cross arm, the third cross arm, the fourth cross arm sets up in first cross arm below from last to down parallel interval in proper order, three's one end is fixed with the outer peripheral face of steel-pipe pole respectively, first cross arm is the ground wire cross arm, the second cross arm, the third cross arm, the fourth cross arm is the wire cross arm.
Furthermore, the length of the first cross arm is 6.95-7 m, a first ground wire hanging point is arranged at the other end of the first cross arm, and a second ground wire hanging point is arranged in the middle of the first cross arm and 3.9-4 m away from the first ground wire hanging point.
Preferably, the first cross arm comprises a first rod piece and a second rod piece, the vertical sections of the first rod piece and the second rod piece are in a right trapezoid shape, the inclined surfaces of the first rod piece and the second rod piece are arranged downwards, the large end of the first rod piece and the small end of the second rod piece are equal in area and are connected with each other, a second ground wire hanging point is arranged at the joint of the first rod piece and the second rod piece, the small end of the first rod piece is provided with a first ground wire hanging point, the large end of the second rod piece is fixed with the steel pipe rod, the gradient beta 1 of the downward inclined surface of the second rod piece is 1: 17.3-17.5, and the gradient beta 2 of the downward inclined surface of the first rod piece is 1: 20.6-21.
Furthermore, the length of the second cross arm is 6.8-6.85 m, the length of the third cross arm is 6.85-6.9 m, the length of the fourth cross arm is equal to that of the second cross arm, and the distance between the second cross arm and the third cross arm and the distance between the third cross arm and the fourth cross arm are 3.8-4 m.
Preferably, the other ends of the second cross arm, the third cross arm and the fourth cross arm are respectively provided with a first wire hanging point, and the middle parts of the three wire cross arms are provided with a second wire hanging point 4-4.05 m away from the first wire hanging point.
Furthermore, the second cross arm comprises a first rod and a second rod, the vertical sections of the first rod and the second rod are in a right trapezoid shape, the inclined surfaces of the first rod and the second rod are arranged downwards, the large end of the first rod is equal to the small end of the second rod in area and connected with each other, the large end of the second rod is fixed with the steel pipe rod, the gradient beta 3 of the downward inclined surface of the second rod is 1: 16.8-17, and the gradient beta 4 of the downward inclined surface of the first rod is 1: 19.2-19.5.
Preferably, the third cross arm and the fourth cross arm have the same structure as the second cross arm respectively.
Preferably, the distance between the second cross arm and the first cross arm is 4-4.5 m.
Preferably, the cross section of the steel pipe rod is regular hexadecimal, the area of the upper end of the steel pipe rod is smaller than that of the lower end of the steel pipe rod, and the taper rate alpha of the steel pipe rod is 1: 63.7-82.6.
Preferably, the breath height H of the steel pipe pole is 15-30 m.
Has the beneficial effects that: compared with the prior art, the utility model has the advantages that: 1. the method can be used for towers and places where the position of the foundation conflicts with the position of the buried pipeline, and provides an economic solution for the problem of pipeline position conflict. 2. According to the electric clearance required by 110KV voltage level specification, the appearance of the steel pipe pole is scientifically designed by combining local meteorological conditions, the size of the steel pipe pole head is optimal, and the steel pipe pole is more stable and convenient to construct. 3. The shape of the steel pipe pole body and each cross arm is reasonably designed, the shape change rule is similar to the internal force change rule of the component, and the performance of the material is fully exerted, so that the material waste is reduced, and the engineering investment is reduced.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic structural view of a steel pipe pole;
FIG. 4 is a schematic structural diagram of a first cross arm;
fig. 5 is a schematic structural diagram of the second cross arm.
Detailed Description
The present invention will be further illustrated with reference to the following figures and specific examples, which are to be understood as merely illustrative and not restrictive of the scope of the utility model.
An inverted-L-shaped double-circuit terminal pole comprises a steel pipe pole 5, and a first cross arm 1, a second cross arm 2, a third cross arm 3 and a fourth cross arm 4 which are positioned on the same side of the steel pipe pole 5, as shown in figures 1-5.
The steel pipe pole 5 is vertically arranged, the section of the steel pipe pole 5 is in a regular hexadecimal shape, the area of the upper end of the steel pipe pole is smaller than that of the lower end of the steel pipe pole, the taper rate alpha of the steel pipe pole 5 is 1: 63.7-82.6, and due to the structural design of the regular hexadecimal shape, the steel pipe pole has the advantages of large section inertia moment, good bending resistance, reasonable variable section degree and good material economy. The breath height H of the steel pipe pole 5 is 15-30 m.
One end of the first cross arm 1 is fixed with the outer peripheral surface of the top end of the steel pipe pole 5, the second cross arm 2, the third cross arm 3 and the fourth cross arm 4 are sequentially arranged below the first cross arm 1 in parallel at intervals from top to bottom, one ends of the second cross arm 2, the third cross arm 3 and the fourth cross arm 4 are fixed with the outer peripheral surface of the steel pipe pole 5 respectively, the distance between the second cross arm 2 and the first cross arm 1 is 4-4.5 m, and the distance between the second cross arm 2 and the third cross arm 3 and the distance between the third cross arm 3 and the fourth cross arm 4 are 3.8-4 m.
The length of the first cross arm 1 is 6.95-7 m, the first cross arm 1 comprises a first rod piece 11 and a second rod piece 12, the vertical sections of the first rod piece 11 and the second rod piece 12 are in a right trapezoid shape, the inclined surfaces of the first rod piece 11 and the second rod piece 12 are arranged downwards, the large end of the first rod piece 11 is equal to the small end of the second rod piece 12 in area and connected with each other, a second ground wire hanging point is arranged at the joint of the first rod piece 11 and the second rod piece, a first ground wire hanging point is arranged at the small end of the first rod piece 11, the distance between the first ground wire hanging point and the second ground wire hanging point is 3.9-4 m, the large end of the second rod piece 12 is fixed with the steel pipe rod 5, the gradient beta 1 of the downward inclined surface of the second rod piece 12 is 1: 17.3-17.5, and the gradient beta 2 of the downward inclined surface of the first rod piece 11 is 1: 20.6-21. And the first ground wire hanging point are OPGW hanging points.
The length of the second cross arm 2 is 6.8-6.85 m, the length of the third cross arm 3 is 6.85-6.9 m, and the length of the fourth cross arm 4 is equal to that of the second cross arm 2.
The second cross arm 2 comprises a first rod 21 and a second rod 22, the vertical sections of the first rod 21 and the second rod 22 are in a right trapezoid shape, the inclined surfaces of the first rod 21 and the second rod 22 are arranged downwards, the large end of the first rod 21 is equal to the small end of the second rod 22 in area and connected with each other, the large end of the second rod 22 is fixed with the steel pipe rod 5, the gradient beta 3 of the downward inclined surface of the second rod piece 12 is 1: 16.8-17, and the gradient beta 4 of the downward inclined surface of the first rod 21 is 1: 19.2-19.5. The third cross arm 3 and the fourth cross arm 4 have the same structure as the second cross arm 2.
The other ends of the second cross arm 2, the third cross arm 3 and the fourth cross arm 4 are respectively provided with a wire hanging point I, and the middle parts of the three wire cross arms are all provided with a wire hanging point II at a distance of 4-4.05 m from the wire hanging point I. The first wire hanging point and the second wire hanging point are both OPGW hanging points.
When the overhead transmission line path conflicts with the buried pipeline, the position conflict problem of the steel pipe pole and the foundation thereof with other pipelines can be relieved to the greatest extent by adopting the utility model.
The electric clearance of the utility model meets the relevant standard requirements, the mechanical structure is reasonable in design, the material performance can be fully utilized, and the construction cost is reduced; the pipeline migration can be reduced, the engineering investment is reduced, and the engineering construction period is shortened.
The external dimension of the utility model meets the requirement of electrical clearance of 110 kV-750 kV overhead transmission line design specifications (GB50545-2010) under multi-region meteorological conditions, and the utility model can be used for hanging various types of conducting wires and ground wires (OPGW), wherein the maximum vertical span of a tower is 250m, and the maximum horizontal span is 200 m.
According to the utility model, a steel pipe pole can be designed into a straight line pole or a tension resistant pole according to the actual situation of a power line, different breath heights H are designed according to the crossing situation, the root diameter of the steel pipe pole can be determined according to the tip diameter and the taper rate of the steel pipe pole after the breath height is determined, and the variable slope of each cross arm is kept unchanged; the material can be selected from Q345, Q420 and other alloy structural steel, and the applicability of the utility model is strong.
Claims (10)
1. The utility model provides a two return circuit terminal poles of shape of falling L which characterized in that: including steel-pipe pole (5), and be located first cross arm (1) with one side of steel-pipe pole (5), second cross arm (2), third cross arm (3), fourth cross arm (4), steel-pipe pole (5) vertical setting, the one end of first cross arm (1) is fixed with the outer peripheral face on steel-pipe pole (5) top, second cross arm (2), third cross arm (3), fourth cross arm (4) are from last to setting up in first cross arm (1) below to parallel interval arrangement in proper order down, three's one end is fixed with the outer peripheral face of steel-pipe pole (5) respectively, first cross arm (1) is the ground wire cross arm, second cross arm (2), third cross arm (3), fourth cross arm (4) are the wire cross arm.
2. An inverted-L-shaped dual-circuit terminal rod according to claim 1, characterized in that: the length of the first cross arm (1) is 6.95-7 m, the other end of the first cross arm (1) is provided with a first ground wire hanging point, and a second ground wire hanging point is arranged in the middle of the first cross arm (1) and 3.9-4 m away from the first ground wire hanging point.
3. An inverted-L-shaped dual-circuit terminal rod according to claim 2, characterized in that: the first cross arm (1) comprises a first rod piece (11) and a second rod piece (12) which are of right trapezoid-shaped vertical cross sections, the inclined planes of the first rod piece (11) and the second rod piece (12) are arranged downwards, the large end of the first rod piece (11) is equal to the small end of the second rod piece (12) in area and connected with each other, a second ground wire hanging point is arranged at the joint of the first rod piece (11) and the second rod piece, the small end of the first rod piece (11) is provided with a first ground wire hanging point, the large end of the second rod piece (12) is fixed with the steel pipe rod (5), the gradient beta 1 of the downward inclined plane of the second rod piece (12) is 1: 17.3-17.5, and the gradient beta 2 of the downward inclined plane of the first rod piece (11) is 1: 20.6-21.
4. An inverted-L-shaped dual-circuit terminal rod according to claim 1, characterized in that: the length of the second cross arm (2) is 6.8-6.85 m, the length of the third cross arm (3) is 6.85-6.9 m, the length of the fourth cross arm (4) is equal to that of the second cross arm (2), and the distance between the second cross arm (2) and the third cross arm (3) and the distance between the third cross arm (3) and the fourth cross arm (4) are 3.8-4 m.
5. An inverted-L-shaped double-circuit terminal rod according to claim 1 or 4, wherein: the other ends of the second cross arm (2), the third cross arm (3) and the fourth cross arm (4) are respectively provided with a first wire hanging point, and the middle parts of the three wire cross arms are all provided with a second wire hanging point 4-4.05 m away from the first wire hanging point.
6. An inverted-L-shaped dual-circuit terminal rod according to claim 1, characterized in that: the second cross arm (2) comprises a first rod (21) and a second rod (22) with two vertical cross sections in a right trapezoid shape, inclined planes of the first rod (21) and the second rod (22) are arranged downwards, the large end of the first rod (21) is equal to the small end area of the second rod (22) and connected with each other, the large end of the second rod (22) is fixed with the steel pipe (5), the gradient beta 3 of the downward inclined plane of the second rod (12) is 1: 16.8-17, and the gradient beta 4 of the downward inclined plane of the first rod (21) is 1: 19.2-19.5.
7. The inverted-L-shaped dual-circuit terminal rod according to claim 6, wherein: the third cross arm (3) and the fourth cross arm (4) are respectively identical to the second cross arm (2) in structure.
8. The inverted-L-shaped dual-circuit terminal rod according to claim 1, wherein: the distance between the second cross arm (2) and the first cross arm (1) is 4-4.5 m.
9. An inverted-L-shaped dual-circuit terminal rod according to claim 1, characterized in that: the section of the steel pipe rod (5) is in a regular hexadecimal shape, the area of the upper end of the steel pipe rod is smaller than that of the lower end of the steel pipe rod, and the taper rate alpha of the steel pipe rod (5) is 1: 63.7-82.6.
10. An inverted-L-shaped dual-circuit terminal rod according to claim 1, characterized in that: the breath height H of the steel pipe rod (5) is 15-30 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123215488.4U CN216665187U (en) | 2021-12-15 | 2021-12-15 | Inverted L-shaped double-loop terminal rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123215488.4U CN216665187U (en) | 2021-12-15 | 2021-12-15 | Inverted L-shaped double-loop terminal rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216665187U true CN216665187U (en) | 2022-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123215488.4U Active CN216665187U (en) | 2021-12-15 | 2021-12-15 | Inverted L-shaped double-loop terminal rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216665187U (en) |
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2021
- 2021-12-15 CN CN202123215488.4U patent/CN216665187U/en active Active
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