Three-loop power transmission line steel pipe pole

Abstract

The utility model discloses a three-loop power transmission line steel pipe pole, belongs to the technical field of power transmission line poles and towers, and aims to realize stress balance of two sides of the steel pipe pole and reduce the overall height of the steel pipe pole. Comprising a steel pipe type pole body, a crank arm, an upper-layer wire cross arm, a lower-layer left-side wire cross arm and a lower-layer right-side wire cross arm, the left crank arm and the right crank arm are both fixed to the top of the rod body and are symmetrical about the rod body. The three upper-layer wire cross arms are respectively arranged between the two crank arms and are mounted on the left side of the left crank arm and the right side of the right crank arm in a cantilever manner; the upper-layer wire cross arm is symmetrical about the pole body; the three lower-layer left wire cross arms are arranged at intervals along the vertical direction and are fixed on the left side of the pole body in a cantilever manner; three lower-layer right-side wire cross arms are arranged at intervals along the vertical direction and are fixed on the right side of the pole body in a cantilever manner; and the lower-layer left-side wire cross arm and the lower-layer right-side wire cross arm are symmetrically arranged relative to the pole body. Stress balance of the two sides of the three-loop power transmission line steel pipe pole is achieved, and the bending moment borne by the pole body is reduced; the overall height of the steel pipe pole is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of power transmission line towers, specifically relating to a three-circuit power transmission line steel pipe pole for erecting three transmission lines on the same tower. Background Technology

[0002] Compared to self-supporting transmission towers and guyed poles, steel pipe transmission poles offer advantages such as smaller footprint, narrower overhead line corridors, faster and more convenient installation, and a more aesthetically pleasing appearance. Therefore, steel pipe poles are widely used in overhead transmission lines in urban areas where land resources are scarce and line corridors are limited. Steel pipe poles can be used to erect single-circuit, double-circuit, triple-circuit, and quadruple-circuit transmission lines on the same tower. Traditional triple-circuit steel pipe poles are generally based on quadruple-circuit steel pipe poles, with one circuit's conductor crossarm removed, resulting in... Figure 1 The three-circuit steel pipe pole shown has three conductor crossarms cantilevered on one side of the pole to connect one set of three-phase conductors, and six conductor crossarms cantilevered on the other side of the pole to connect the other two sets of three-phase conductors. However, this arrangement has problems such as unbalanced forces on both sides of the steel pipe pole and a relatively high overall height. Utility Model Content

[0003] The purpose of this invention is to provide a steel pipe pole for a three-circuit transmission line, which achieves force balance on both sides of the steel pipe pole and reduces the overall height of the steel pipe pole.

[0004] The present invention relates to a three-circuit transmission line steel pipe pole, comprising a steel pipe pole body, curved arms, an upper conductor crossarm, a lower left conductor crossarm, and a lower right conductor crossarm; there are two curved arms, namely a left curved arm and a right curved arm; both the left and right curved arms are fixed to the top of the pole body and are arranged symmetrically about the pole body; there are three upper conductor crossarms, namely an upper middle conductor crossarm arranged between the two curved arms, an upper left conductor crossarm cantilevered on the left side of the left curved arm, and an upper right conductor crossarm cantilevered on the right side of the right curved arm; the upper conductor crossarms are symmetrically arranged about the pole body; there are three lower left conductor crossarms and three lower right conductor crossarms, the three lower left conductor crossarms are arranged vertically at intervals and cantilevered and fixed to the left side of the pole body; the three lower right conductor crossarms are arranged vertically at intervals and cantilevered and fixed to the right side of the pole body; and the lower left and lower right conductor crossarms are symmetrically arranged about the pole body.

[0005] Furthermore, the upper middle conductor crossarm, the upper left conductor crossarm, and the upper right conductor crossarm are set at the same height.

[0006] Furthermore, the crank arm is fixed to the top of the pole body via the flange; the upper conductor crossarm is fixed to the crank arm via the flange; the lower left conductor crossarm and the lower right conductor crossarm are fixed to the pole body via flanges.

[0007] Further, a ground wire hanging point for connecting two ground wires is arranged on the left curved arm and the right curved arm respectively; a conductor hanging point for connecting the upper three-phase conductors is arranged on the upper middle conductor cross arm, the upper left conductor cross arm and the upper right conductor cross arm respectively; a conductor hanging point for connecting the lower left three-phase conductors is arranged on each lower left conductor cross arm respectively; a conductor hanging point for connecting the lower right three-phase conductors is arranged on each lower right conductor cross arm respectively.

[0008] Further, the cross sections of the pole body, the curved arm, the upper conductor cross arm, the lower left conductor cross arm and the lower right conductor cross arm are circular, regular polygonal or rectangular.

[0009] The utility model discloses a three-loop power transmission line steel pipe pole, utilizes the upper conductor cross arm, lower left conductor cross arm and lower right conductor cross arm each erects a loop, and the upper conductor cross arm is about the pole body symmetrical arrangement, and lower left conductor cross arm and lower right conductor cross arm are about the pole body symmetrical arrangement, makes three-loop power transmission line steel pipe pole itself be about the symmetrical structure of pole body, thereby realizes three-loop power transmission line steel pipe pole both sides stress balance's purpose, has reduced the bending moment that pole body bears.

[0010] Due to the left conductor cross arm of the upper conductor cross arm and the upper right conductor cross arm are about the pole body symmetrical arrangement, make the conductor hanging on it horizontal arrangement, thereby can reduce the steel pipe specification, reduce the weight of steel pipe pole, save the steel material. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is three-loop power transmission line steel pipe pole schematic diagram of prior art;

[0012] Figure 2 It is three-loop power transmission line steel pipe pole schematic diagram of the utility model discloses.

[0013] In the drawing, pole body 1, curved arm 2, left curved arm 201, right curved arm 202, upper conductor cross arm 3, upper left conductor cross arm 301, upper middle conductor cross arm 302, upper right conductor cross arm 303, lower left conductor cross arm 4, lower right conductor cross arm 5, flange 6. DETAILED DESCRIPTION

[0014] The utility model will be further explained as follows in connection with the drawings and examples:

[0015] The "left", "right", "transverse", "longitudinal", "vertical", "upper", "lower" and the like of the utility model express the direction based on the attached Figure 1The shown orientation or position relationship is only for conveniently describing the utility model, and is not indicative or suggestive of the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0016] The three-loop transmission line steel pipe pole, such as Figure 2 as shown, comprises a steel pipe type pole body 1, a curved arm 2, an upper layer conductor cross arm 3, a lower layer left conductor cross arm 4 and a lower layer right conductor cross arm 5 and the like components. That is, the pole body 1, the curved arm 2, the upper layer conductor cross arm 3, the lower layer left conductor cross arm 4 and the lower layer right conductor cross arm 5 are all steel pipes.

[0017] The pole body 1 bottom is fixed on the foundation through the anchor bolt, and the pole body 1 bottom can also be directly cast in the foundation concrete for fixation. The length of the pole body 1 is determined by the height of the conductor to the ground, and the pole body 1 can be composed of one section of steel pipe or multiple sections of steel pipes, the upper and lower sections of steel pipes are connected through the flange, and can also be connected through welding or insertion and the like forms, the cross section can be a circular cross section, a regular polygon cross section or a rectangular cross section and the like other cross section forms, and the steel pipe can be equal cross section along the length direction or variable cross section form.

[0018] The curved arm 2 has two, which are left curved arm 201 and right curved arm 202; the left curved arm 201 and the right curved arm 202 are both fixed on the top of the pole body 1 and symmetrically arranged about the pole body 1. The left curved arm 201 and the right curved arm 202 can be fixed on the top of the pole body 1 through the flange 6, and can also be fixed on the top of the pole body 1 through the welding form. The curved arm 2 is also a steel pipe, and the cross section can be a circular cross section, a regular polygon cross section or a rectangular cross section and the like other cross section forms, and the steel pipe can be equal cross section along the length direction or variable cross section form.

[0019] The upper layer conductor cross arm 3 has three, which are the upper layer middle conductor cross arm 302 arranged in the middle of the two curved arms 2, the upper layer left conductor cross arm 301 cantilevered mounted on the left side of the left curved arm 201 and the upper layer right conductor cross arm 303 cantilevered mounted on the right side of the right curved arm 202. That is, the left end of the middle conductor cross arm 302 is fixed to the left curved arm 201, and the right end is fixed to the right curved arm 202; the right end of the upper layer left conductor cross arm 301 is fixed to the left curved arm 201, and the left end is cantilevered; the left end of the upper layer right conductor cross arm 303 is fixed to the right curved arm 202, and the right end is cantilevered, wherein the specific fixing method can adopt flange form or welding form. The upper layer conductor cross arm 3 is symmetrically arranged about the pole body 1, that is, the middle conductor cross arm 302 is symmetric about the pole body 1, the upper layer left conductor cross arm 301 and the upper layer right conductor cross arm 303 are symmetrically arranged about the pole body 1, that is, the upper layer left conductor cross arm 301 is rotated 180° around the pole body 1 and coincides with the upper layer right conductor cross arm 303. The upper layer conductor cross arm 3 is a steel pipe, which can have a circular cross section, a regular polygonal cross section or a rectangular cross section, and can have a constant cross section or a variable cross section along the length direction.

[0020] The lower layer left conductor cross arm 4 and the lower layer right conductor cross arm 5 are respectively three, three lower layer left conductor cross arms 4 are vertically spaced and cantilevered fixed to the left side of the pole body 1; three lower layer right conductor cross arms 5 are vertically spaced and cantilevered fixed to the right side of the pole body 1; and the lower layer left conductor cross arm 4 and the lower layer right conductor cross arm 5 are symmetrically arranged about the pole body 1. The lower layer left conductor cross arm 4 and the lower layer right conductor cross arm 5 are also steel pipes, which can have a circular cross section, a regular polygonal cross section or a rectangular cross section, and can have a constant cross section or a variable cross section along the length direction.

[0021] In order to further reduce the overall height of the three-loop power transmission line steel pipe pole, further, the upper layer middle conductor cross arm 302, the upper layer left conductor cross arm 301 and the upper layer right conductor cross arm 303 are arranged at the same height. Such arrangement makes the uppermost layer of conductors arranged in the same horizontal plane, and there is no height difference between the uppermost layer of each phase conductor, thereby reducing the overall height of the steel pipe pole, thereby reducing the steel pipe specification, reducing the weight of the steel pipe pole and saving steel.

[0022] As can be seen from the above embodiments, the curved arm 2 and the pole body 1, the upper layer conductor cross arm 3 and the corresponding curved arm 2, the lower layer left conductor cross arm 4 and the pole body 1, and the lower layer right conductor cross arm 5 and the pole body 1, and other components can be connected by flanges or welding. In the embodiment, as a preferred mode, the curved arm 2 is fixed on the top of the pole body 1 by the flange 6, the upper layer conductor cross arm 3 is fixed on the curved arm 2 by the flange 6, and the lower layer left conductor cross arm 4 and the lower layer right conductor cross arm 5 are fixed on the pole body 1 by the flange 6.

[0023] Further, the left curved arm 201 and the right curved arm 202 are respectively provided with a ground wire hanging point at the top, which is used for connecting two ground wires.

[0024] The upper layer middle conductor cross arm 302, the upper layer left conductor cross arm 301 and the upper layer right conductor cross arm 303 are respectively provided with a conductor hanging point, which is used for connecting the upper layer three-phase conductor.

[0025] The lower layer left conductor cross arm 4 is respectively provided with a conductor hanging point, which is used for connecting the lower layer left three-phase conductor.

[0026] The lower layer right conductor cross arm 5 is respectively provided with a conductor hanging point, which is used for connecting the lower layer right three-phase conductor.

[0027] It should be noted that in this paper, the term "including", "containing" or any other variant thereof is intended to cover non-exclusive containing, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A steel pipe pole for a three-circuit transmission line, characterized in that: The system includes a steel pipe pole body (1), curved arms (2), an upper conductor crossarm (3), a lower left conductor crossarm (4), and a lower right conductor crossarm (5); there are two curved arms (2), namely a left curved arm (201) and a right curved arm (202); both the left curved arm (201) and the right curved arm (202) are fixed to the top of the pole body (1) and are arranged symmetrically about the pole body (1); there are three upper conductor crossarms (3), namely an upper middle conductor crossarm (302) arranged between the two curved arms (2), and an upper left conductor crossarm that is cantilevered and installed on the left side of the left curved arm (201). (301) and the upper right conductor crossarm (303) cantilevered on the right side of the right curved arm (202); the upper conductor crossarm (3) is symmetrically arranged about the pole body (1); there are three lower left conductor crossarms (4) and three lower right conductor crossarms (5); the three lower left conductor crossarms (4) are arranged vertically at intervals and cantilevered on the left side of the pole body (1); the three lower right conductor crossarms (5) are arranged vertically at intervals and cantilevered on the right side of the pole body (1); and the lower left conductor crossarms (4) and the lower right conductor crossarms (5) are symmetrically arranged about the pole body (1).

2. The steel pipe pole for a three-circuit transmission line as described in claim 1, characterized in that: The upper middle conductor crossarm (302), the upper left conductor crossarm (301), and the upper right conductor crossarm (303) are set at the same height.

3. The steel pipe pole for a three-circuit transmission line as described in claim 1 or 2, characterized in that: The crank arm (2) is fixed to the top of the pole body (1) via a flange (6); the upper conductor crossarm (3) is fixed to the crank arm (2) via a flange (6); The lower left conductor crossarm (4) and the lower right conductor crossarm (5) are fixed to the pole body (1) by flanges (6).

4. The steel pipe pole for a three-circuit transmission line as described in claim 1 or 2, characterized in that: A grounding point for connecting two ground wires is set on the left curved arm (201) and the right curved arm (202); a wire hanging point for connecting the upper three-phase conductors is set on the upper middle conductor crossarm (302), the upper left conductor crossarm (301) and the upper right conductor crossarm (303); a wire hanging point for connecting the lower left three-phase conductors is set on each lower left conductor crossarm (4); a wire hanging point for connecting the lower right three-phase conductors is set on each lower right conductor crossarm (5).

5. The steel pipe pole for a three-circuit transmission line as described in claim 1 or 2, characterized in that: The cross-sections of the pole body (1), the curved arm (2), the upper conductor crossarm (3), the lower left conductor crossarm (4), and the lower right conductor crossarm (5) are circular, regular polygonal, or rectangular.

Images