Power transmission tower
Technical Field
The utility model relates to a power transmission equipment field specifically is a power transmission tower.
Background
The power transmission tower is an important supporting structural member in the power transmission line, and the structure and the material of the power transmission tower directly influence the construction speed, the economy and the reliability of the power transmission line and the aspects of installation, maintenance, overhaul and the like. At present, widely used towers in domestic and foreign overhead transmission lines mainly comprise wooden poles, concrete poles, iron towers and the like, and the iron towers are the most commonly used towers in high-voltage and ultrahigh-voltage transmission lines in various countries in the world.
On the other hand, along with the erection of the power transmission line, a large amount of cultivated land is occupied, so that land resources are wasted, and meanwhile, the erection cost of the power transmission line is greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough to prior art, the utility model aims at providing a power transmission tower, this power transmission tower can reduce the area of power transmission tower.
In order to realize the purpose of the utility model, the utility model adopts the following technical means: a transmission tower comprising: the power transmission tower is provided with a first transverse part and a second transverse part which are perpendicular to each other in the horizontal direction, the power transmission tower is provided with a supporting piece which extends outwards from the tower body along the first transverse part, one end of the supporting piece is fixed on the tower body, the other end of the supporting piece is a free end, the cross arm extends transversely along the second transverse part, one end of the cross arm is connected onto the free end, and the other end of the cross arm is used for arranging an overhead wire.
Above-mentioned power transmission tower is through being provided with support piece on above-mentioned first horizontal, connects above-mentioned cross arm through support piece, compares the condition with cross arm lug connection on the body with the tradition, the utility model discloses a cross arm can be close the body of the tower more at the end of this cross arm when the installation after adjusting suitable angle, under the condition that satisfies the air interval requirement to reduce circuit corridor width, reach the technological effect that reduces above-mentioned power transmission tower area.
Preferably, the power transmission tower is provided with two symmetrical supporting members extending outwards from the tower body along the first transverse direction, one end of each supporting member is fixed on the tower body, the other end of each supporting member is a first free end and a second free end, a first cross arm is connected to the first free end, a second cross arm is connected to the second free end, and the first cross arm and the second cross arm are connected with the other ends of the first free end and the second free end.
More preferably, ends of the first cross arm and the second cross arm are directly fixed to each other.
More preferably, the first cross arm and the second cross arm are equal in length. The symmetrical structure enables the stress of the power transmission tower to be more uniform.
More preferably, the tower body is a framework, and the supporting member is a triangular structure. The supporting piece with the triangular structure can enable the stability of the supporting piece to be higher, and can reduce the cost by reducing materials under the condition of improving the stability.
More preferably, the tower body is a single column, and the supporting member is a column.
Preferably, the supporting member is provided with only one, the free end is connected with a first cross arm, the tower body is provided with a second cross arm, and the ends of the first cross arm and the second cross arm are connected with each other.
Preferably, the power transmission tower further comprises a first diagonal cable having one end fixed above a point where the support member is fixed to the tower body, and the other end fixed to the free end.
Preferably, the power transmission tower further comprises a second diagonal cable having one end fixed above a point where the cross arm is fixed to the tower body and the other end fixed to a distal end of the cross arm.
The utility model discloses a power transmission tower, application support piece's structural connection cross arm can realize dwindling the corridor width, reduces area's effect.
Drawings
Fig. 1 is a perspective view of a partial structure of a transmission tower 1000 according to an embodiment of the present invention;
fig. 2 is a perspective view of a partial structure of a second power transmission tower 2000 according to an embodiment of the present invention;
fig. 3 is a perspective view of a part of a power transmission tower 3000 according to an embodiment of the present invention;
fig. 4 is a perspective view of a partial structure of a four-transmission tower 4000 according to an embodiment of the present invention.
Wherein,
1000. 2000, 3000, 4000-transmission towers;
100. 200, 300, 400-tower body;
110. 210, 410-support shelf;
111-first free end;
112-second free end;
120. 420-Cross arm;
121. 221, 321 — first cross arm;
122. 222, 322 — second cross arm;
223-connecting rod;
131. 231 — first diagonal draw;
132. 332, 432-second diagonal draw;
y-first transverse direction;
x-the second transverse direction.
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, a transmission tower 1000 according to a first embodiment of the present invention includes a tower body 100, two support frames 110 installed on the tower body 100, and a cross arm 120 installed on the support frames 110.
The tower body 100 is a lattice-type steel structure, and the tower body 100 has four side surfaces, each of which is an isosceles trapezoid with a small upper part and a large lower part. The tower body 100 has a first lateral direction Y and a second lateral direction X perpendicular to each other in the horizontal direction.
The support bracket 110 is fixed to the tower body 100 at one end and extends outwardly in a first transverse direction Y at the other end. The ends of the two support frames 110 away from the tower 100 are respectively a first free end 111 and a second free end 112. Four first diagonal cables 131 are arranged between the tower body 100 and the support frame 110. One end of the first inclined pull 131 is fixed above the fixing of the support frame 110 and the tower body 100, and the other ends of the first inclined pull 131 are fixed on the first free end 111 and the second free end 112 in pairs respectively. The supporting frame 110 and the first diagonal tension 131 are made of metal. The supporting frame 110 is a triangular structure, and the structure is more stable.
The cross arm 120 comprises a first cross arm 121 and a second cross arm 122, the first cross arm 121 is connected at the first free end 111, the second cross arm 122 is connected at the second free end 112, the other ends of the first cross arm 121 and the second cross arm 122 are fixed to each other, and the first cross arm 121 and the second cross arm 122 both extend outward of the tower body 100 in the second transverse direction X. First cross arm 121 and second cross arm 122 are equal in length. The transmission tower 1000 of the present embodiment includes two sets of the first cross arm 121 and the second cross arm 122, and the two sets of the cross arms 120 are bilaterally symmetrical with respect to the tower body 100. A second diagonal tension 132 is arranged between the tower body 100 and the cross arm 120, one end of the second diagonal tension 132 is fixed on the tower body 100 higher than the plane of the cross arm 120, and the other end is fixed at the tail end of the cross arm 120. This embodiment includes four second diagonal braces 132. The cross arm 120 and the second diagonal stay 132 of this embodiment are composite materials.
In the power transmission tower 1000 of the present embodiment, by arranging the supporting frame 110 and connecting and fixing the cross arm 120 through the supporting frame 110, compared with the conventional method of directly fixing the cross arm on the tower body, an included angle between the first cross arm 121 and the second cross arm 122 of the present embodiment can be increased by the arrangement of the supporting frame 110, and further, under the condition that the length of the cross arm 120 is not changed, the distance from the terminal of the cross arm 120 to the tower body 100 is reduced, so as to reduce the requirement of meeting the air insulation interval, thereby reducing the width of the line corridor, and achieving the effect of reducing the floor area of the power transmission tower 100.
Example two:
as shown in fig. 2, in the second embodiment of the present invention, the support frame 210 and the first oblique-pulling 231 are made of composite material, and the shape of the support frame 110 and the first oblique-pulling 131 of the first embodiment of the present invention are substantially the same. Unlike the first embodiment, the ends of the first cross arm 221 and the second cross arm 222 of the present embodiment are not directly fixed together, but are fixed by the connecting rod 223, and the connecting rod 223 is made of metal.
Other structures of this embodiment are the same as the first embodiment of the present invention.
In addition to the advantages of the first power transmission tower 1000, the power transmission tower 2000 of the present embodiment may have a shorter length for the first cross arm 221 and the second cross arm 222 because the supporting frame 210 and the first diagonal cable 231 are made of insulating materials, and the angles of the first cross arm 221 and the second cross arm 222 may be variously adjusted because the ends of the first cross arm 221 and the second cross arm 222 are fixed by the connecting rod 223, so that the distance from the ends of the first cross arm 221 and the second cross arm 222 to the tower body 200 may be adjusted to the shortest insulation distance.
Example three:
as shown in fig. 3, in the power transmission tower 3000 of the embodiment of the present invention, the first cross arm 321 on the left side of the tower body 300 is fixed on the tower body 300, and the second cross arm 322 on the right side of the tower body 300 is directly fixed on the tower body 300. In this embodiment, there are only two second diagonal members 332, one on each of the left and right sides of the tower body 300. All other structures of this embodiment are the same as the utility model provides a first power transmission tower 1000.
The power transmission tower 3000 of this embodiment has the utility model discloses the whole advantages of embodiment one.
Example four:
as shown in fig. 4, the transmission tower 4000 of the present embodiment includes a tower body 400, two support frames 410 mounted on the tower body 400, a cross arm 420 mounted on the support frames 410, and a second diagonal cable 432 mounted between the tower body 400 and the cross arm 420.
The tower body 400 has a cylindrical structure. The tower body 400 has a first lateral direction Y and a second lateral direction X perpendicular to each other in the horizontal direction.
The supporting frame 420 has a rod-like structure. The support bracket 420 is fixed to the tower 400 at one end and extends outwardly in a first transverse direction Y at the other end.
The cross arm 420 and the second oblique pull 432 of this embodiment are basically the same as the cross arm and the second oblique pull 332 of the third embodiment of the present invention.
The power transmission tower 4000 of the present embodiment is generally used for a power transmission tower of a low voltage class, and has all the advantages of the first embodiment of the present invention.
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.