Tower leg extension structure of iron tower

Abstract

The utility model provides an iron tower leg extension structure which is convenient to construct. The tower leg main material extension rod extends downwards along the gradient of the original tower leg main material, the tower leg first inclined material extension rod extends downwards along the gradient of the original tower leg first inclined material, and the tower leg second inclined material extension rod extends downwards along the gradient of the original tower leg second inclined material. At the moment, the tower leg first inclined material extension rod and the tower leg second inclined material extension rod are both located on the outer side, away from the center of the iron tower, of the tower leg main material extension rod, the foundation bending moment is reduced, and the original tower leg of the iron tower is extended to compensate for the height difference when the gradient of the tower position is steep. By arranging the first connecting piece, the second connecting piece and the third connecting piece, the structural stability of the tower leg first inclined material extension rod, the tower leg second inclined material extension rod and the tower leg main material extension rod is improved, and the iron tower is stably supported.

Description

Technical Field

[0001] The utility model relates to the technical field of iron towers, in particular to an iron tower leg extension structure. Background Art

[0002] With the construction of hydropower and new energy transmission projects, more and more transmission lines are being built in steep mountainous areas. Transmission line towers (hereinafter referred to as: towers) are usually built on hardened foundations on the slopes, that is, the slopes are first squared, and then the foundation and transmission towers are constructed. In order to adapt to various complex tower locations, the legs of the towers are usually high-low leg structures, that is, there is a step difference between the legs. The length of the tower legs is limited by the angle of the main diagonal material, so the step difference of the designed tower legs is also limited. When the slope at the tower location is steep, that is, the step difference is large, the following methods are often used to deal with it:

[0003] Method 1: Use the method of excavating the upper slope, that is, excavating the earth on the upper part of the slope to reduce the level difference at the tower position. However, there is a large amount of earth excavation, which is easy to cause soil erosion and environmental protection problems.

[0004] Method 2: Building a cap foundation on the lower slope side to reduce the level difference at the tower position. However, there are technical problems such as large amount of cap foundation engineering and high construction risk.

[0005] Method 3: Use a four-legged steel frame to raise the tower, that is, build a four-legged steel frame on the foundation, and then connect the tower legs to the four-legged steel frame. The foundation pile diameter of this solution is affected by the bottom width of the four-legged steel frame, and the steel consumption is large. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an iron tower leg extension structure which is convenient to construct.

[0007] The utility model solves the technical problem by adopting the following technical solution: an extension structure of an iron tower leg, comprising a tower leg main material extension rod having the same slope as the original tower leg main material and located at the lower part of the original tower leg main material, wherein the upper end of the tower leg main material extension rod is connected to the lower end of the original tower leg main material;

[0008] It also includes a tower leg first diagonal material extension rod having the same slope as the original tower leg first diagonal material and located at the lower part of the original tower leg first diagonal material, the upper end of the tower leg first diagonal material extension rod is connected to the lower end of the original tower leg first diagonal material, and there is a distance between the lower end of the tower leg first diagonal material extension rod and the tower leg main material extension rod;

[0009] It also includes a tower leg second diagonal material extension rod having the same slope as the original tower leg second diagonal material and located at the lower part of the original tower leg second diagonal material, the upper end of the tower leg second diagonal material extension rod is connected to the lower end of the original tower leg second diagonal material, and there is a distance between the lower end of the tower leg second diagonal material extension rod and the tower leg main material extension rod;

[0010] The first diagonal extension rod of the tower leg and the second diagonal extension rod of the tower leg are both located on the outer side of the main extension rod of the tower leg away from the center of the iron tower;

[0011] The tower leg main material extension rod is connected to the first diagonal material extension rod of the tower leg through a first connecting piece, the tower leg main material extension rod is connected to the second diagonal material extension rod of the tower leg through a second connecting piece, and the tower leg first diagonal material extension rod is connected to the second diagonal material extension rod of the tower leg through a third connecting piece.

[0012] Further, the first connecting member includes a first cross bar and a first connecting rod;

[0013] One end of the first cross bar is connected to the tower leg main material extension bar, and the other end is connected to the tower leg first diagonal material extension bar; a plurality of the first cross bars are provided, and the plurality of the first cross bars are arranged in pairs along the axial direction of the tower leg main material extension bar;

[0014] Two upper and lower adjacent first cross bars are connected via the first connecting rod, the upper end of the first connecting rod is adjacent to the first diagonal material extension rod of the tower leg, and the lower end of the first connecting rod is adjacent to the main material extension rod of the tower leg.

[0015] Further, the second connecting member includes a second cross bar and a second connecting rod;

[0016] One end of the second cross bar is connected to the tower leg main material extension bar, and the other end is connected to the tower leg second diagonal material extension bar; a plurality of second cross bars are provided, and the plurality of second cross bars are arranged in pairs along the axial direction of the tower leg main material extension bar;

[0017] Two upper and lower adjacent second cross bars are connected via the second connecting rod, the upper end of the second connecting rod is adjacent to the second diagonal material extension rod of the tower leg, and the lower end of the second connecting rod is adjacent to the main material extension rod of the tower leg.

[0018] Furthermore, the third connecting member includes an X-shaped reinforcing rod; the first diagonal extension rod of the tower leg and the second diagonal extension rod of the tower leg are connected via the X-shaped reinforcing rod.

[0019] Furthermore, the third connecting member also includes a third cross bar, one end of which is connected to the first diagonal extension bar of the tower leg, and the other end is connected to the second diagonal extension bar of the tower leg; the third cross bar is located above the X-shaped reinforcement bar.

[0020] Furthermore, the tower leg main material extension rod, the tower leg first diagonal material extension rod, the tower leg second diagonal material extension rod, the first connecting piece, the second connecting piece and the third connecting piece are all made of steel.

[0021] Furthermore, the upper end of the extension rod of the tower leg main material and the lower end of the original tower leg main material, the upper end of the extension rod of the tower leg first diagonal material and the lower end of the original tower leg first diagonal material, and the upper end of the extension rod of the tower leg second diagonal material and the lower end of the original tower leg second diagonal material are all connected by bolts.

[0022] Furthermore, the angle between the first diagonal extension rod of the tower leg and the main extension rod of the tower leg is greater than or equal to 18° and less than or equal to 60°, and the angle between the second diagonal extension rod of the tower leg and the main extension rod of the tower leg is greater than or equal to 18° and less than or equal to 60°.

[0023] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a tower leg extension structure that is easy to construct, and has the technical advantages of strong structural stability, easy construction, low steel consumption, and low earth excavation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 It is a side view structural schematic diagram of the utility model;

[0026] Figure markings: 1-original tower leg main material; 2-original tower leg first diagonal material; 3-original tower leg second diagonal material; 4-tower leg main material extension rod; 5-tower leg first diagonal material extension rod; 6-tower leg second diagonal material extension rod; 7-first cross bar; 8-first connecting rod; 9-second cross bar; 10-second connecting rod; 11-X-shaped reinforcement rod; 12-third cross bar. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 , 2 The utility model is further illustrated with embodiments.

[0028] The tower leg extension structure comprises a tower leg main material extension rod 4 having the same slope as the original tower leg main material 1 and located at the bottom of the original tower leg main material 1, wherein the upper end of the tower leg main material extension rod 4 is connected to the lower end of the original tower leg main material 1; further comprising a tower leg first oblique material extension rod 5 having the same slope as the original tower leg first oblique material 2 and located at the bottom of the original tower leg first oblique material 2, wherein the upper end of the tower leg first oblique material extension rod 5 is connected to the lower end of the original tower leg first oblique material 2, and a spacing is provided between the lower end of the tower leg first oblique material extension rod 5 and the tower leg main material extension rod 4; further comprising a tower leg second oblique material 3 having the same slope as the original tower leg second oblique material 3 and located at the bottom of the original tower leg second oblique material 3 The diagonal material extension rod 6, the upper end of the second diagonal material extension rod 6 of the tower leg is connected to the lower end of the second diagonal material 3 of the original tower leg, and there is a distance between the lower end of the second diagonal material extension rod 6 of the tower leg and the main material extension rod 4 of the tower leg; the first diagonal material extension rod 5 of the tower leg and the second diagonal material extension rod 6 of the tower leg are both located on the outer side of the main material extension rod 4 of the tower leg away from the center of the iron tower; the main material extension rod 4 of the tower leg is connected to the first diagonal material extension rod 5 of the tower leg through a first connecting piece, the main material extension rod 4 of the tower leg is connected to the second diagonal material extension rod 6 of the tower leg through a second connecting piece, and the first diagonal material extension rod 5 of the tower leg is connected to the second diagonal material extension rod 6 of the tower leg through a third connecting piece.

[0029] The tower leg main material extension rod 4 extends downward along the slope of the original tower leg main material 1, the tower leg first diagonal material extension rod 5 extends downward along the slope of the original tower leg first diagonal material 2, and the tower leg second diagonal material extension rod 6 extends downward along the slope of the original tower leg second diagonal material 3. At this time, the tower leg first diagonal material extension rod 5 and the tower leg second diagonal material extension rod 6 are both located on the outer side of the tower leg main material extension rod 4 away from the center of the iron tower, reducing the foundation bending moment and extending the original tower leg of the iron tower to compensate for the height difference when the slope at the tower position is steeper. By setting the first connecting member, the second connecting member and the third connecting member, the structural stability of the tower leg first diagonal material extension rod 5, the tower leg second diagonal material extension rod 6 and the tower leg main material extension rod 4 is improved, and the iron tower is stably supported. The lower end of the tower leg main material extension rod 4, the lower end of the tower leg first diagonal material extension rod 5 and the lower end of the tower leg second diagonal material extension rod 6 are all connected to the foundation of the platform through the tower foot base plate.

[0030] Preferably, the first connecting member includes a first crossbar 7 and a first connecting rod 8; one end of the first crossbar 7 is connected to the tower leg main material extension rod 4, and the other end is connected to the tower leg first diagonal material extension rod 5; a plurality of first crossbars 7 are provided, and the plurality of first crossbars 7 are arranged in pairs along the axial direction of the tower leg main material extension rod 4; two upper and lower adjacent first crossbars 7 are connected by the first connecting rod 8, and the upper end of the first connecting rod 8 is adjacent to the tower leg first diagonal material extension rod 5, and the lower end is adjacent to the tower leg main material extension rod 4. The tower leg main material extension rod 4 and the tower leg first diagonal material extension rod 5 are connected to the first crossbar 7 by welding or bolts. The upper and lower adjacent first crossbars 7 are connected to the first connecting rod 8 by welding or bolts.

[0031] Preferably, the second connecting member includes a second crossbar 9 and a second connecting rod 10; one end of the second crossbar 9 is connected to the tower leg main material extension rod 4, and the other end is connected to the tower leg second diagonal material extension rod 6; a plurality of second crossbars 9 are provided, and the plurality of second crossbars 9 are arranged in pairs along the axial direction of the tower leg main material extension rod 4; two upper and lower adjacent second crossbars 9 are connected by the second connecting rod 10, and the upper end of the second connecting rod 10 is adjacent to the tower leg second diagonal material extension rod 6, and the lower end is adjacent to the tower leg main material extension rod 4. The tower leg main material extension rod 4 and the tower leg second diagonal material extension rod 6 are connected to the second crossbar 9 by welding or bolts. The upper and lower adjacent second crossbars 9 are connected to the second connecting rod 10 by welding or bolts.

[0032] Preferably, the third connecting member comprises an X-shaped reinforcing rod 11; the tower leg first diagonal extension rod 5 and the tower leg second diagonal extension rod 6 are connected via the X-shaped reinforcing rod 11. They can be connected by welding or by bolts.

[0033] As a further preference, the third connecting member further comprises a third cross bar 12, one end of the third cross bar 12 is connected to the first diagonal extension bar 5 of the tower leg, and the other end is connected to the second diagonal extension bar 6 of the tower leg; the third cross bar 12 is located above the X-shaped reinforcing bar 11. The first diagonal extension bar 5 of the tower leg and the second diagonal extension bar 6 of the tower leg are connected to the third cross bar 12 by welding or bolts. The number of X-shaped reinforcing bars 11 can be set according to actual needs.

[0034] The tower leg main material extension rod 4, the tower leg first diagonal material extension rod 5, the tower leg second diagonal material extension rod 6, the first connecting piece, the second connecting piece and the third connecting piece can be made of cemented carbide products. Preferably, the tower leg main material extension rod 4, the tower leg first diagonal material extension rod 5, the tower leg second diagonal material extension rod 6, the first connecting piece, the second connecting piece and the third connecting piece are all steel products.

[0035] The upper end of the tower leg main material extension rod 4 and the lower end of the original tower leg main material 1, the upper end of the tower leg first diagonal material extension rod 5 and the lower end of the original tower leg first diagonal material 2, and the upper end of the tower leg second diagonal material extension rod 6 and the lower end of the original tower leg second diagonal material 3 can all be connected by welding. Preferably, the upper end of the tower leg main material extension rod 4 and the lower end of the original tower leg main material 1, the upper end of the tower leg first diagonal material extension rod 5 and the lower end of the original tower leg first diagonal material 2, and the upper end of the tower leg second diagonal material extension rod 6 and the lower end of the original tower leg second diagonal material 3 are all connected by bolts.

[0036] Preferably, the angle between the first diagonal extension rod 5 of the tower leg and the main extension rod 4 of the tower leg is greater than or equal to 18° and less than or equal to 60°, and the angle between the second diagonal extension rod 6 of the tower leg and the main extension rod 4 of the tower leg is greater than or equal to 18° and less than or equal to 60°.

[0037] The embodiments of the specific implementation are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. All equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. The tower leg extension structure is characterized by: It comprises a tower leg main material extension rod (4) having the same slope as the original tower leg main material (1) and located below the original tower leg main material (1), wherein the upper end of the tower leg main material extension rod (4) is connected to the lower end of the original tower leg main material (1); It also comprises a tower leg first diagonal material extension rod (5) having the same slope as the original tower leg first diagonal material (2) and located below the original tower leg first diagonal material (2), the upper end of the tower leg first diagonal material extension rod (5) being connected to the lower end of the original tower leg first diagonal material (2), and a spacing being provided between the lower end of the tower leg first diagonal material extension rod (5) and the tower leg main material extension rod (4); It also comprises a tower leg second diagonal material extension rod (6) having the same slope as the original tower leg second diagonal material (3) and located below the original tower leg second diagonal material (3), the upper end of the tower leg second diagonal material extension rod (6) being connected to the lower end of the original tower leg second diagonal material (3), and a spacing being provided between the lower end of the tower leg second diagonal material extension rod (6) and the tower leg main material extension rod (4); The first diagonal extension rod (5) of the tower leg and the second diagonal extension rod (6) of the tower leg are both located on the outer side of the main extension rod (4) of the tower leg away from the center of the iron tower; The tower leg main material extension rod (4) is connected to the tower leg first diagonal material extension rod (5) via a first connecting piece, the tower leg main material extension rod (4) is connected to the tower leg second diagonal material extension rod (6) via a second connecting piece, and the tower leg first diagonal material extension rod (5) is connected to the tower leg second diagonal material extension rod (6) via a third connecting piece.

2. The tower leg extension structure according to claim 1, characterized in that: The first connecting member comprises a first cross bar (7) and a first connecting rod (8); One end of the first cross bar (7) is connected to the tower leg main material extension bar (4), and the other end is connected to the tower leg first diagonal material extension bar (5); a plurality of first cross bars (7) are provided, and the plurality of first cross bars (7) are arranged in pairs along the axial direction of the tower leg main material extension bar (4); Two upper and lower adjacent first cross bars (7) are connected via the first connecting rod (8); the upper end of the first connecting rod (8) is adjacent to the first diagonal extension rod (5) of the tower leg, and the lower end is adjacent to the main extension rod (4) of the tower leg.

3. The tower leg extension structure according to claim 1, characterized in that: The second connecting member comprises a second cross bar (9) and a second connecting rod (10); One end of the second cross bar (9) is connected to the tower leg main material extension bar (4), and the other end is connected to the tower leg second diagonal material extension bar (6); a plurality of second cross bars (9) are provided, and the plurality of second cross bars (9) are arranged in pairs along the axial direction of the tower leg main material extension bar (4); Two upper and lower adjacent second cross bars (9) are connected via the second connecting rod (10); the upper end of the second connecting rod (10) is adjacent to the tower leg second diagonal material extension rod (6), and the lower end is adjacent to the tower leg main material extension rod (4).

4. The tower leg extension structure according to any one of claims 1 to 3, characterized in that: The third connecting member comprises an X-shaped reinforcing rod (11); the first diagonal extension rod (5) of the tower leg and the second diagonal extension rod (6) of the tower leg are connected via the X-shaped reinforcing rod (11).

5. The tower leg extension structure according to claim 4, characterized in that: The third connecting member also includes a third cross bar (12), one end of the third cross bar (12) is connected to the first diagonal extension bar (5) of the tower leg, and the other end is connected to the second diagonal extension bar (6) of the tower leg; the third cross bar (12) is located above the X-shaped reinforcing bar (11).

6. The tower leg extension structure according to claim 1, characterized in that: The tower leg main material extension rod (4), the tower leg first diagonal material extension rod (5), the tower leg second diagonal material extension rod (6), the first connecting piece, the second connecting piece and the third connecting piece are all made of steel.

7. The tower leg extension structure according to claim 1, characterized in that: The upper end of the tower leg main material extension rod (4) and the lower end of the original tower leg main material (1), the upper end of the tower leg first diagonal material extension rod (5) and the lower end of the original tower leg first diagonal material (2), and the upper end of the tower leg second diagonal material extension rod (6) and the lower end of the original tower leg second diagonal material (3) are all connected by bolts.

8. The tower leg extension structure according to claim 1, characterized in that: The angle between the first diagonal extension rod (5) of the tower leg and the main extension rod (4) of the tower leg is greater than or equal to 18° and less than or equal to 60°, and the angle between the second diagonal extension rod (6) of the tower leg and the main extension rod (4) of the tower leg is greater than or equal to 18° and less than or equal to 60°.

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