A transmission tower

Abstract

The present invention belongs to the technical field of tower structures, and discloses a transmission tower, which includes a tower body, a tower foundation and a transmission device; the tower body is composed of a frame structure formed by main members connected alternately by diagonal members and cross members, forming a plurality of triangular bracing surfaces; the transmission device is composed of a first support member, a second support member, a cross arm, a cross beam and diagonal braces, forming a quadrangular pyramid structure and two triangular bracing surfaces. The transmission tower of the present invention has good stability and wind resistance, and uses a small number of members, greatly reducing the self-weight of the tower body; thus, it can improve the bearing capacity of the tower body, reduce the weight of the transmission tower, and lower the production and maintenance costs.

Description

Technical Field

[0001] The present invention belongs to the technical field of tower structures, and more specifically, relates to a transmission tower. Background Art

[0002] With the modernization process of society, the electricity consumption is increasing continuously, the operating voltage level of the power grid system is continuously rising, and the demand for high-voltage transmission towers is also expanding continuously. Existing transmission towers have problems such as weak main material load-bearing capacity, high manufacturing cost, weak wind resistance, complex installation process, and long time consumption.

[0003] Existing in-service transmission towers have relatively low safety due to their early design years and condition limitations. The rod materials used are single and the strength values are low. In the case of long-term service, deformation, corrosion, etc. will inevitably occur. Moreover, with the deterioration of the global climate, the occurrence of extreme weather increases, which is likely to cause corrosion of transmission tower materials and local structural damage, and finally the transmission tower is damaged and cannot be used. In addition, due to the insufficient structural strength of the transmission tower, more steel is often needed to increase the load capacity, and the thickness of the steel also needs to be increased, but at the same time, the weight of the transmission tower itself is increased, resulting in an increase in the load of the transmission tower. All these bring great difficulties to the construction of the transmission tower and are less economical. Summary of the Invention

[0004] In order to solve the related technical problems of transmission towers, the present invention provides a new type of transmission tower with reasonable structural design, which can improve the load-bearing capacity of the tower body, reduce the weight of the transmission tower, and lower the production and maintenance costs.

[0005] In order to solve the above technical problems, the present invention is specifically realized through the following technical solutions:

[0006] A transmission tower, comprising a tower body, and the tower body includes main materials, cross members and diagonal members;

[0007] The main materials are arranged vertically, and the four main materials are arranged in a rectangle on a plane;

[0008] Three layers of cross members are arranged between the four main materials, which successively include the first layer of cross members, the second layer of cross members and the third layer of cross members from top to bottom;

[0009] Each layer of cross members includes four horizontal bars and two cross bars that are all horizontally arranged; in each layer of cross members, one horizontal bar is connected between every two adjacent main materials, and the four horizontal bars enclose a rectangle between the four main materials, and two cross bars are arranged at the diagonal positions in the rectangle, and the two cross bars intersect at the midpoint position O;

[0010] The diagonal members are arranged between the four main materials, and the diagonal members form a triangular bracing surface between the cross members;

[0011] There are four first-layer diagonal members arranged between the cross members of the first layer and the cross members of the second layer. The tops of the four first-layer diagonal members are all connected to the midpoint O of the cross members of the first layer, and the bottoms of the four first-layer diagonal members are respectively connected to the four ends of the two cross bars of the cross members of the second layer;

[0012] There are four second-layer diagonal members arranged between the cross members of the second layer and the cross members of the third layer. The tops of the four second-layer diagonal members are respectively connected to the bottoms of the four first-layer diagonal members, and the bottoms of the four second-layer diagonal members are respectively connected to the midpoint O of the cross members of the third layer;

[0013] There are four third-layer diagonal members arranged between the cross members of the third layer and the bottoms of the four main members. The tops of the four third-layer diagonal members are respectively connected to the bottoms of the four second-layer diagonal members, and the bottoms of the four third-layer diagonal members are respectively connected to the bottoms of the four main members.

[0014] Further, the surfaces of the main members, the cross members, and the diagonal members can be coated with an anti-corrosion coating.

[0015] Further, the main members can be made of Y-shaped steel.

[0016] Further, the bottoms of the main members are connected to the tower base.

[0017] Further, the cross members of the first layer are arranged at the tops of the main members. The cross members of the first layer, the cross members of the second layer, and the cross members of the third layer are equidistantly arranged on the main members, and the cross members of the second layer and the cross members of the third layer divide the main members into three equidistant segments.

[0018] Further, the cross bars of the cross members are connected to the main members through connectors, and the cross bars are connected to the main members or the cross bars through connectors.

[0019] Further, it further includes a power transmission device; the power transmission device is composed of a first support member, a second support member, a cross arm, a cross beam, and a diagonal brace.

[0020] The tops of the four first support members are connected to one point, and the bottoms are respectively connected to the tops of the four main members, forming a quadrangular pyramid structure;

[0021] The cross arm is arranged between the four first support members, and the cross arm is located in the middle of the height direction of the first support members;

[0022] Four crossbeams are symmetrically arranged on both sides of the quadrangular pyramid structure formed by the first support member, and the crossbeams are all arranged horizontally; one end of the two crossbeams on the same side is respectively connected to the two ends of the same crossarm, and the other end extends outward and is connected to point P together to form a triangular support surface; the line connecting the points P on both sides passes through the intersection of the two cross rods in the crossarm;

[0023] Four diagonal braces are symmetrically arranged on both sides of the quadrangular pyramid structure formed by the first supporting member, and the four diagonal braces are respectively arranged under the four cross beams; one end of the two diagonal braces on the same side are respectively connected to the bottom ends of the two first supporting members on the same side, and the other ends are connected together at point P to form a triangular supporting surface;

[0024] Two second support members are symmetrically arranged on both sides of the quadrangular pyramid structure formed by the first support member, one end of the two second support members is respectively connected to two points P, and the other end is commonly connected to the midpoint position O of the second layer of the horizontal material.

[0025] Furthermore, the cross arm includes four horizontally arranged cross bars and two cross bars; one cross bar is connected between every two adjacent first support members, the four cross bars are located in the middle section of the first support members, and form a rectangle between the first support members; two cross bars are arranged along the diagonal position between the four cross bars of the cross arm.

[0026] Furthermore, the surfaces of the first support member, the second support member, the cross arm, the cross beam and the diagonal brace are plated with an anti-corrosion coating.

[0027] The beneficial effects of the present invention are:

[0028] (i) The transmission tower of the present invention has a tower body composed of a frame structure in which main materials are connected by diagonal materials and transverse materials to form multiple triangular support surfaces, which has good stability and wind resistance, and uses a small number of rods, which greatly reduces the weight of the tower body.

[0029] (ii) The transmission tower of the present invention has a transmission device composed of various rods forming a four-cone structure and two triangular support surfaces. The three top positions are prepared for later use, and all cross-sections constituting the transmission device are triangular support surfaces, which have good stability; and the transmission device is connected to the lower end tower body to form an integral body, which has good wind resistance.

[0030] (III) The transmission tower of the present invention has its tower body and the steel materials of the components of the transmission device treated with corrosion protection, which can increase the service life of the transmission tower, reduce daily maintenance expenses, and lower costs.

[0031] (4) The main members of the tower body of the transmission tower of the present invention can adopt Y-shaped steel, which can solve the problem of climbing the tower during installation and maintenance by workers and provide certain guarantee for the safety of workers. Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of the transmission tower of the present invention;

[0033] Figure 2 is a schematic structural diagram of the tower body in the transmission tower of the present invention;

[0034] Figure 3 is a schematic structural diagram of the power transmission device in the transmission tower of the present invention;

[0035] Figure 4 is a cross-sectional view of the main member using Y-shaped steel.

[0036] In the above figures: 1: tower body, 101: main member, 102: cross member, 1021: cross bar, 1022: cross brace, 103: diagonal member; 2: tower foundation; 3: power transmission device, 301: first support member, 302: second support member, 303: cross arm, 304: cross beam, 305: diagonal brace. Detailed Embodiments

[0037] The present invention will be further described in detail below through specific embodiments. The following embodiments can enable those skilled in the art to understand the present invention more comprehensively, but do not limit the present invention in any way.

[0038] As Figure 1 shown, this embodiment discloses a transmission tower, including a tower body 1, a tower foundation 2 and a power transmission device 3. The tower body 1 bears the main load of the transmission tower and is the main carrier for the transmission tower to resist wind, bending moment and torque. The tower foundation 2 is arranged at the lower end of the tower body 1. The lower half of the tower foundation 2 is buried underground, and the upper half is connected to the tower body 1. Its main function is to fix the tower body 1 and prevent the transmission tower from shifting and tilting. The power transmission device 3 is connected to the upper end of the tower body 1. The power transmission component 3 provides an installation point for installing the power transmission line, so that the high-voltage line can be installed according to the reserved position of the power transmission component 3 when passing through the transmission tower.

[0039] Combined with Figure 2 shown, in the transmission tower of the present invention, the tower body 1 is a frame structure formed by the staggered connection of the main members 101, cross members 102 and diagonal members 103.

[0040] There are four main members 101, all of which are vertically arranged and are arranged in a rectangle on the plane. The tower foundation 2 is arranged at the bottom ends of the four main members 101.

[0041] There are three layers of cross-members 102 arranged between the four main members 101, which successively include the first-layer cross-member 102, the second-layer cross-member 102, and the third-layer cross-member 102 from top to bottom. On the one hand, the three layers of cross-members 102 connect the main members 101 and provide connection points for the diagonal members 103. On the other hand, they also make the four main members 101 more stable and enhance the load-bearing capacity of the tower body 1.

[0042] The first-layer cross-member 102 is arranged at the top of the main member 101. The first-layer cross-member 102, the second-layer cross-member 102, and the third-layer cross-member 102 are equally spaced on the main member 101, and the second-layer cross-member 102 and the third-layer cross-member 102 divide the main member 101 into three equally spaced segments. The three layers of cross-members 102 connect the main members in three planes, which can strengthen the stability of the main members; and the equal-spacing distribution evenly distributes the force on the main member 101, avoiding local damage caused by uneven force; at the same time, the first-layer cross-member 102 is arranged at the top of the main member 101 and can be connected to the power transmission device simultaneously, strengthening the integrity of the structure.

[0043] Each layer of cross-member 102 includes four horizontal cross-bars 1021 and two cross bars 1022. In each layer of cross-member 102, one cross-bar 1021 is connected between every two adjacent main members 101. The four cross-bars 1021 enclose a rectangle between the four main members 101. In this rectangle, two cross bars 1022 are arranged along the diagonal positions, and the two cross bars 1022 intersect at the midpoint O. Among them, the cross-bar 1021 is connected to the main member 101 through a connecting piece, and the cross bar 1022 is connected to the main member 101 or the cross-bar 1021 through a connecting piece.

[0044] In this way, the cross-bar 1021 connects the four main members 101 to prevent the main members 101 from tilting; the cross bar 1022 can stabilize the quadrilateral formed by the cross-bars 1021 and prevent displacement.

[0045] There are diagonal members 103 arranged between the four main members 101, and the diagonal members 103 form a triangular support surface between the cross-members 102.

[0046] There are four first-layer diagonal members 103 arranged between the first-layer cross-member 102 and the second-layer cross-member 102. The tops of the four first-layer diagonal members 103 are connected to the midpoint O (the intersection point of the two cross bars 1022) of the first-layer cross-member 102, and the bottoms of the four first-layer diagonal members 103 are respectively connected to the four ends of the two cross bars 1022 of the second-layer cross-member 102.

[0047] There are four second-layer diagonal members 103 arranged between the second-layer cross-member 102 and the third-layer cross-member 102. The tops of the four second-layer diagonal members 103 are respectively connected to the bottoms of the four first-layer diagonal members 103, and the bottoms of the four second-layer diagonal members 103 are respectively connected to the midpoint O (the intersection point of the two cross bars 1022) of the third-layer cross-member 102.

[0048] Four third-layer oblique materials 103 are arranged between the third-layer horizontal material 102 and the bottom ends of the four main materials 101. The top ends of the four third-layer oblique materials 103 are respectively connected to the bottom ends of the four second-layer oblique materials 103 (i.e., the midpoint position O of the third-layer horizontal material 102), and the bottom ends of the four third-layer oblique materials 103 are respectively connected to the bottom ends of the four main materials 101.

[0049] Therefore, the three-layer oblique material 103 can help to effectively transfer the force and bending moment of the upper part of the main material 101 to the lower part layer by layer, restrain the bending deformation of the main material 101, improve the ability to prevent deformation, and enhance stability.

[0050] In summary, the tower body 1 of the transmission tower is mainly composed of main materials 101, cross materials 102, and oblique materials 103. The four main materials 101 increase the bearing capacity of the tower body 1. The connection between the cross materials 102 and the oblique materials 103 forms a triangular support surface, which improves the stability of the tower body 1. In addition, the tower body 1 uses a small amount of steel, which reduces the weight of the tower body and saves raw materials.

[0051] A power transmission device 3 is arranged on the upper part of the tower body 1. The power transmission device currently in use is generally a rectangular frame structure combined with a group of triangular support surfaces. It has few connection points with the tower body 1 and is relatively long. When subjected to severe weather such as strong winds and heavy snow, it is prone to local damage, which further causes the transmission tower to be unable to continue to be used.

[0052] Combination Figure 3 As shown, the present invention further provides a new structure of a power transmission device 3, which is mainly composed of a first support member 301, a second support member 302, a cross arm 303, a cross beam 304, and a diagonal brace 305.

[0053] The first support members 301 include four first support members 301, the top ends of which are connected to one point, and the bottom ends are respectively connected to the top ends of the four main materials 101 of the tower body 1, forming a quadrangular pyramid structure. The top of the quadrangular pyramid structure formed by the four first support members 301 is used as a fulcrum for erecting the transmission line, and the first support members 301 meet the requirements of bearing load and bending moment.

[0054] There is a cross arm 303 arranged between the four first support members 301. The cross arm 303 is located in the middle of the first support members 301 in the height direction. The cross arm 303 includes four horizontal cross bars and two cross bars. One cross bar is connected between each adjacent pair of the first support members 301. The four cross bars are located in the middle section of the first support members 301 and enclose a rectangle between the first support members 301. The cross bar is connected to the main material 101 through a connecting member. Two cross bars are arranged along the diagonal positions between the four cross bars of the cross arm 303. The cross bar is connected to the cross bar or the first support member 301 through a connecting member. The cross arm 303 is connected between the first support rods 301, which plays a role in strengthening the connection of the four first support members 301 and prevents the displacement of the quadrangular pyramid structure.

[0055] Four cross beams 304 are symmetrically arranged on both sides of the quadrangular pyramid structure formed by the first support members 301. All the cross beams 304 are horizontally arranged. One ends of two cross beams 304 on the same side are respectively connected to both ends of the same cross arm 303 through connecting members, and the other ends extend outwards and are commonly connected to point P through connecting members to form a triangular support surface. The connection line of the two points P on both sides passes through the intersection point of the two cross bars in the cross arm 303. Point P at the convergence of the two cross beams 304 on the same side is the position for erecting the transmission line, and the cross beam 304 provides a certain pulling force at this position.

[0056] Four diagonal braces 305 are symmetrically arranged on both sides of the quadrangular pyramid structure formed by the first support members 301. The four diagonal braces 305 are respectively arranged below the four cross beams 304. One ends of two diagonal braces 305 on the same side are respectively connected to the bottom ends of the two first support members 301 on the same side (i.e., the top ends of the two main materials 101 on the same side) through connecting members, and the other ends are commonly connected to point P through connecting members to form a triangular support surface. Point P is the position for erecting the transmission line. When point P is stressed, the diagonal brace 305 can provide an upward supporting force.

[0057] Two second support members 302 are symmetrically arranged on both sides of the quadrangular pyramid structure formed by the first support members 301. One ends of the two second support members 302 are respectively connected to the two points P, and the other ends are commonly connected to the midpoint O of the second layer of cross members 102.

[0058] It can be seen that the transmission device 3 provided by the present invention is a frame structure formed by connecting the first support member 301, the second support member 302, the cross arm 303, the cross beam 304, and the diagonal brace 305. Among them, it mainly constitutes a quadrangular pyramid structure and a structure with a triangular support surface in cross section, which greatly increases the stability of the transmission device. At the same time, the second support member 302 in the transmission device 3 is connected to the tower body 1, so that the transmission device 3 also has a certain load-bearing capacity.

[0059] Furthermore, the main materials 101, cross members 102, and diagonal members 103 of the tower body 1, as well as the surfaces of the first support member 301, second support member 302, cross arm 303, cross beam 304, and diagonal brace 305 of the power transmission device 3, can be coated with an anti-corrosion coating, which increases the service life of the transmission tower and reduces the daily maintenance cost.

[0060] Furthermore, as Figure 4 shown, the main material 101 of the tower body 1 can be made of Y-shaped steel, and the Y-shaped steel is provided with a T-shaped wing plate. When the staff climbs the tower, they can conveniently climb the transmission tower with the help of the T-shaped rod, which can solve the problem of climbing the tower during installation and maintenance by the staff and provide certain guarantee for the safety of the staff.

[0061] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can make many specific transformations in various forms without departing from the spirit and scope of the present invention as protected by the claims. All of these fall within the protection scope of the present invention.

Claims

1. A transmission tower, comprising a tower body, characterized in that, The tower body includes main members, cross members and diagonal members; The main members are arranged vertically, and the four main members are arranged in a rectangle on the plane; the bottom ends of the main members are connected to the tower base; Three layers of cross members are arranged between the four main members, which successively include the first layer of cross members, the second layer of cross members and the third layer of cross members from top to bottom; Each layer of cross members includes four horizontal bars and two cross bars that are all horizontally arranged; in each layer of cross members, one horizontal bar is connected between every two adjacent main members, and the four horizontal bars enclose a rectangle between the four main members. Two cross bars are arranged at the diagonal positions in this rectangle, and the two cross bars intersect at the midpoint O; the horizontal bars of the cross members are connected to the main members through connecting pieces, and the cross bars are connected to the main members or the horizontal bars through connecting pieces; The diagonal members are arranged between the four main members, and the diagonal members form a triangular support surface between the cross members; Four first-layer diagonal members are arranged between the first layer of cross members and the second layer of cross members. The top ends of the four first-layer diagonal members are all connected to the midpoint O of the first layer of cross members, and the bottom ends of the four first-layer diagonal members are respectively connected to the four ends of the two cross bars of the second layer of cross members; Four second-layer diagonal members are arranged between the second layer of cross members and the third layer of cross members. The top ends of the four second-layer diagonal members are respectively connected to the bottom ends of the four first-layer diagonal members, and the bottom ends of the four second-layer diagonal members are respectively connected to the midpoint O of the third layer of cross members; Four third-layer diagonal members are arranged between the third layer of cross members and the bottom ends of the four main members. The top ends of the four third-layer diagonal members are respectively connected to the bottom ends of the four second-layer diagonal members, and the bottom ends of the four third-layer diagonal members are respectively connected to the bottom ends of the four main members; This transmission tower further includes a transmission device; the transmission device is composed of a first support member, a second support member, a cross arm, a cross beam and a diagonal brace; The top ends of the four first support members are connected to one point, and the bottom ends are respectively connected to the top ends of the four main members, forming a pyramid structure; A cross arm is arranged between the four first support members, and the cross arm is located in the middle of the height direction of the first support members; Four cross beams are symmetrically arranged on both sides of the pyramid structure formed by the first support members. The cross beams are all horizontally arranged; one end of the two cross beams on the same side is respectively connected to both ends of the same cross arm, and the other end extends outward and is commonly connected to point P, forming a triangular support surface; the connection line of the two P points on both sides passes through the intersection point of the two cross bars in the cross arm; Four diagonal braces are symmetrically arranged on both sides of the pyramid structure formed by the first support members. The four diagonal braces are respectively arranged below the four cross beams; one end of the two diagonal braces on the same side is respectively connected to the bottom ends of the two first support members on the same side, and the other end is commonly connected to point P, forming a triangular support surface; Two second support members are symmetrically arranged on both sides of the pyramid structure formed by the first support members. One end of the two second support members is respectively connected to the two P points, and the other end is commonly connected to the midpoint O of the second layer of cross members.

2. The transmission tower according to claim 1, characterized in that, The surfaces of the main material, the cross member, and the diagonal member are coated with an anti-corrosion coating.

3. A transmission tower according to claim 1, characterized in that, The main material is made of Y-shaped steel.

4. A transmission tower according to claim 1, characterized in that, The first layer of the cross member is arranged at the top of the main material. The first layer of the cross member, the second layer of the cross member, and the third layer of the cross member are arranged at equal intervals on the main material, and the second layer of the cross member and the third layer of the cross member divide the main material into three equal intervals.

5. A transmission tower according to claim 1, characterized in that, The cross arm includes four horizontal cross bars and two cross bars that are all horizontally arranged; one cross bar is connected between every two adjacent first support members. The four cross bars are located in the middle section of the first support members and enclose a rectangle between the first support members; two cross bars are arranged at the diagonal positions between the four cross bars of the cross arm.

6. A transmission tower according to claim 1, characterized in that, The surfaces of the first support member, the second support member, the cross arm, the cross beam, and the diagonal brace are coated with an anti-corrosion coating.

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