CN105370085A - Transmission tower - Google Patents

Abstract

The invention provides a power transmission iron tower, the power transmission iron tower includes a tower body arranged vertically, a tower head arranged horizontally on the upper end of the tower body, and a transmission wire arranged on the tower head, the tower body is made of angle steel A frame structure formed by interlaced connection of the main material, angle steel slanting material and angle steel horizontal material vertically arranged with the angle steel main material, the angle steel main material, angle steel slanting material and angle steel horizontal material are connected through a gusset plate assembly; Equipped with anti-dancing device for wires. The power transmission iron tower provided by the invention has the advantages of improving the corrosion resistance of the power transmission iron tower, reducing the construction cost of the iron tower and preventing galloping of the conductors of the power transmission line.

Description

a transmission tower

technical field

The invention relates to power transmission equipment, in particular to a power transmission iron tower.

Background technique

With the rapid development of the grid scale, the demand for transmission towers is also increasing, but the maintenance costs of transmission towers caused by steel corrosion are very alarming, and the atmospheric environment (coastal salt spray and chemical acid rain areas) has caused serious corrosion of existing transmission towers. It can be seen that the corrosion of the iron tower has caused a great waste of transmission tower materials and energy, which seriously affects the safety and reliability of the power grid operation. Therefore, it is necessary to provide a power transmission tower to prevent the power transmission tower from being corroded, reduced in strength, and deteriorated in mechanical properties.

The inventor finds through long-term observation and research that the iron towers with anti-corrosion function often adopt the hot-dip galvanizing process for anti-corrosion. It cannot meet the requirements of industrial production; ②The anti-corrosion performance of transmission tower nodes is poor, and rainwater is easy to accumulate at the nodes to cause node corrosion; ③Due to the unreasonable structure of transmission tower nodes, it results in increased consumables, poor node strength and increased construction difficulty. ④ The performance of the anti-dancing device of the transmission tower is poor, and it cannot effectively suppress the simultaneous dancing of two adjacent conductors, which may easily cause serious economic losses and social impacts under severe weather conditions.

Therefore, it is necessary to provide a power transmission tower to improve the corrosion resistance of the power transmission tower and reduce the construction cost and maintenance cost of the power transmission tower.

Contents of the invention

To solve the deficiencies in the prior art, the present invention provides the following technical solutions to achieve: provide a transmission iron tower, the transmission iron tower includes a tower body vertically arranged, a tower head arranged horizontally on the upper end of the tower body and a set transmission conductors on said tower head,

The tower body is a frame structure formed by staggered connection of angle steel main material, angle steel slanting material and angle steel transverse material perpendicular to the angle steel main material, and the angle steel main material, angle steel slanting material and angle steel transverse material pass through the gusset plate assembly connect;

An anti-dancing device is provided on the transmission wire.

The tower head includes horizontally arranged cross-arms and support vertical beams arranged symmetrically on both sides of the tower body perpendicular to the cross-arms;

The supporting vertical beams and cross-arms form a hexagonal tower window;

The left end, the middle end and the right end of the cross-arm are respectively provided with connectors for hanging the transmission wires.

The gusset plate assembly includes a plate body connected to the main angle steel material, angle steel oblique material and angle steel cross member limb surface, and a reinforcement component vertically arranged on the surface of the plate body;

The plate body is polygonal, and each side of the polygon is respectively connected with the angle steel leg surface in one direction.

The reinforcing component is a reinforcing rib composed of ribs arranged on both sides of the main angle steel material along the axial direction of the power transmission tower and ribs arranged longitudinally of the power transmission tower.

The plate body is provided with fixing bolts perpendicular to its surface to connect the limb surface,

A gasket is provided between the limb surface and the plate body; the thickness of the gasket is 3 to 5 mm, its inner diameter is 1.2 to 1.8 mm larger than the screw diameter of the fixing bolt, and its outer diameter is larger than the screw diameter of the fixing bolt. The diameter is 15 to 25mm larger.

The wire dance prevention device includes a wire dance prevention mechanism connected to the power transmission wire, an adjustment mechanism arranged on the ground, and a composite insulator assembly between the wire dance prevention mechanism and the adjustment mechanism;

The wire dance prevention mechanism includes a frame in the shape of a regular polygon and a fixed wire clip arranged at the apex of the frame;

The adjusting mechanism includes a pay-off wheel provided with a wire rope, a foundation arranged at the lower end of the pay-off wheel and a controller connected with the pay-off wheel.

The fixed wire clip includes a cross shaft connected in sequence, an elastic column, and a wire clip composed of a wire clip main body and a wire clip gland;

The cross shaft is movably connected to the frame, and its axial center is provided with a fixed shaft fixedly connected to the main body of the clamp;

The elastic column is arranged around the cross shaft;

The frame is provided with a vertically arranged fixing plate, and the lower surface of the fixing plate is provided with a hole connected with the composite insulator assembly.

The composite insulator assembly includes a U-shaped hanging ring, an extension pull ring, an insulator string, and a delta connection connected to the insulator string through the U-shaped hanging ring and the steel wire rope. plate;

The U-shaped hanging ring is a U-shaped plate-like structure with a hole horizontally provided at one end; extension ring;

Both ends of the insulator string are provided with a pressure equalizing ring; the pressure equalizing ring is a circular ring composed of two symmetrically arranged half rings, and the end of the half ring is provided with a sealing ball,

The pressure equalizing rings arranged at the upper and lower ends of the insulator string are fixed on semicircular brackets respectively connected to the U-shaped hanging ring and the U-shaped hanging ring;

The triangular connecting plate is an isosceles triangle, one end of which is equidistantly arranged along the same straight line and connected with the U-shaped hanging ring, and the other end is provided with a center line on the bottom edge of the triangle located on the same suspension line and connected to the center line of the triangle. The connecting hole for connecting the steel wire rope.

The transmission tower adopts weathering steel as the tower steel;

In terms of mass percentage, the weathering steel contains: C, 0.114%; Si, 0.297%; Mn, 0.974%; P, 0.0247%; S, 0.018%; Cr, 0.543%; Ni, 0.393%; ; Cu, 0.316%; Ti, 0.0002%; V, 0.0056%; Nb, 0.019%;

There is a gap between the angle steel main material, the angle steel oblique material and the angle steel cross material connected by the gusset plate assembly;

The number of the main angle steel materials arranged on the lower side of the gusset plate assembly is one or two, and the number of the main angle steel materials arranged on the upper side of the gusset plate assembly is one.

Compared with the closest prior art, the technical solution provided by the present invention has the following beneficial effects:

1. The weather-resistant steel transmission tower provided by this application uses weather-resistant steel as the tower steel, which has the excellent effect of effectively preventing corrosion of the transmission tower and improving the corrosion resistance of the transmission tower.

2. The weather-resistant steel transmission tower provided by this application adopts isolation pads and gaskets, which have the excellent effect of reducing the rainwater adsorption capacity of the gap between the gusset plate components, thereby avoiding the corrosion of the gusset plate components caused by alternating wet and dry conditions.

3. The weather-resistant steel transmission tower provided by this application adopts the main angle steel material and the oblique angle steel material with gaps between them, which can prevent the gusset plate components from warping due to the thickening of the rust layer.

4. The anti-dancing device used in the weather-resistant steel transmission tower provided by this application can effectively suppress the simultaneous galloping of two adjacent conductors, and avoid serious economic losses and social impacts under severe weather conditions.

5. The weather-resistant steel transmission tower provided by this application adopts the joint use of the anti-dancing mechanism of the wire and the adjustment mechanism, which has an excellent effect of improving the anti-dancing performance of the transmission line of the transmission tower.

6. The weather-resistant steel transmission tower provided by this application uses a cross shaft fixed with an elastic column as an anti-dancing device, which has an excellent anti-dancing performance.

Description of drawings

Fig. 1 is the front view of the weathering steel transmission tower provided by the present invention;

Fig. 2 is a schematic structural diagram of a gusset plate assembly provided by the present invention;

Fig. 3 is the front view of the wire dance prevention device provided by the present invention;

Fig. 4 is a schematic diagram of the main body of the wire clamp provided by the present invention;

Fig. 5 is a schematic diagram of the structure of the main body of the cable clamp provided by the present invention;

Figure 6 is a schematic diagram of the connection between the anti-dancing mechanism of the wire and the composite insulator assembly provided by the present invention;

Fig. 7 is a schematic diagram of the connection between the insulator string and the voltage equalizing ring provided by the present invention;

Fig. 8 is the front view of the U-shaped hanging ring provided by the present invention;

Fig. 9 is a side view of the U-shaped hanging ring provided by the present invention;

Figure 10 is a schematic diagram of the connection between the plate body and the angle steel main material provided by the present invention;

Among them, 1—tower body, 2—tower head, 3—main angle steel material, 4—angle steel oblique material, 5—angle steel horizontal material, 6—node plate assembly, 7—wire anti-dancing device, 8—cross arm, 9— Support vertical beam, 10—board body, 11—strengthening component, 12—wire anti-dancing mechanism, 13—adjusting mechanism, 14—composite insulator assembly, 15—frame, 16—fixed wire clamp, 17—pay-off wheel, 18— Cross shaft, 19—elastic column, 20—clamp main body, 21—U-shaped hanging ring, 22—extended pull ring, 23—insulator string, 24—triangular joint plate, 25—voltage equalizing ring.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Example 1:

As shown in Figure 1, a kind of electric transmission iron tower, described electric transmission iron tower comprises the tower body 1 that is arranged vertically, the tower head 2 that is arranged on the upper end of described tower body 1 horizontally and the transmission wire that is arranged on described tower head 2,

As shown in Figure 2, the tower body 1 is a frame structure formed by the interlaced connection of the main angle steel material 3, the inclined steel angle material 4 and the angle steel horizontal material 5 vertically arranged with the main angle steel material 3, and the main angle steel material 3 , Angle steel oblique material 4 and angle steel horizontal material 5 are connected through gusset plate assembly 6;

As shown in FIG. 3 , an anti-dancing device 7 is provided on the transmission wire.

As shown in FIG. 1 , the tower head 2 includes horizontally arranged cross arms 8 and support vertical beams 9 arranged symmetrically on both sides of the tower body 1 perpendicular to the cross arms 8 ;

The supporting vertical beams 9 and the cross arms 8 form a hexagonal tower window;

The left end, the middle end and the right end of the cross-arm 8 are respectively provided with connectors for hooking the transmission wires.

As shown in FIG. 2 , the gusset plate assembly 6 includes a plate body 10 connected to the surface of the angle steel main material 3 , angle steel oblique material 4 and angle steel cross member 5 , and a reinforcement assembly perpendicular to the surface of the plate body 10 11;

As shown in FIG. 10 , the plate body 10 is polygonal, and each side of the polygon is respectively connected to an angle steel leg in one direction.

The reinforcing component 11 is a reinforcing rib composed of ribs arranged on both sides of the main angle steel material 3 along the axial direction of the power transmission tower and ribs arranged longitudinally of the power transmission tower.

The plate body 10 is provided with fixing bolts vertically arranged on its surface and connected to the limb surface,

A gasket is provided between the limb surface and the plate body 10; the thickness of the gasket is 3 to 5 mm, its inner diameter is 1.2 to 1.8 mm larger than the screw diameter of the fixing bolt, and its outer diameter is larger than that of the fixing bolt. The diameter of the screw is 15 to 25 mm larger.

As shown in Figure 3, the wire dance prevention device 7 includes a wire dance prevention mechanism 12 connected to the power transmission conductor, an adjustment mechanism 13 arranged on the ground, and between the wire dance prevention mechanism 12 and the adjustment mechanism 13. The composite insulator assembly 14;

As shown in Figure 4, the wire dance prevention mechanism 12 includes a frame 15 shaped as a regular polygon and a fixed wire clamp 16 arranged at the apex of the frame 15;

As shown in FIG. 3 , the adjustment mechanism 13 includes a pay-off wheel 17 provided with a wire rope, a foundation arranged at the lower end of the pay-off wheel 17 and a controller connected to the pay-off wheel 17 .

As shown in FIG. 5 , the fixed wire clamp 16 includes a cross shaft 18 connected in sequence, an elastic column 19 and a wire clamp composed of a wire clamp main body 20 and a wire clamp gland;

The cross shaft 18 is movably connected with the frame 15, and its axial center is provided with a fixed shaft fixedly connected with the clamp main body 20;

The elastic column 19 is arranged around the cross shaft 18;

The frame 15 is provided with a vertical fixing plate, and the lower surface of the fixing plate is provided with a hole connected with the composite insulator assembly 14 .

As shown in Figures 6 and 7, the composite insulator assembly 14 includes a U-shaped hanging ring 21, an extension pull ring 22, an insulator string 23 and The triangular connecting plate 24 connected to the insulator string 23 through the U-shaped hanging ring 21;

As shown in Figures 8 and 9, the U-shaped hanging ring 21 is a U-shaped plate-shaped structure with a hole at one end; The other end is sleeved with the extension ring 22 in the shape of a ring;

Both ends of the insulator string 23 are provided with a pressure equalizing ring 25; the pressure equalizing ring 25 is a circular ring composed of two symmetrically arranged half rings, and the end of the half ring is provided with a sealing ball,

The pressure equalizing rings 25 arranged at the upper and lower ends of the insulator string 23 are fixed on semicircular brackets connected to the U-shaped hanging ring 21 and the U-shaped hanging ring 21 respectively;

Described triangular connecting plate 24 is an isosceles triangle, and its one end is provided with the hole that is connected with described U-shaped hanging ring 21 along the same straight line at equal intervals, and the other end is provided with and is positioned at the same suspension line with the midline on the bottom edge of the triangle. A connecting hole connected with the steel wire rope.

The transmission tower adopts weathering steel as the tower steel;

In terms of mass percentage, the weathering steel contains: C, 0.114%; Si, 0.297%; Mn, 0.974%; P, 0.0247%; S, 0.018%; Cr, 0.543%; Ni, 0.393%; ; Cu, 0.316%; Ti, 0.0002%; V, 0.0056%; Nb, 0.019%;

There is a gap between the angle steel main material 3, the angle steel oblique material 4 and the angle steel cross material 5 connected by the gusset plate assembly 6;

The number of the main angle steel material 3 arranged on the lower side of the gusset plate assembly 6 is one or two, and the number of the main angle steel material 3 arranged on the upper side of the gusset plate assembly 6 is one.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still modify or equivalently replace the specific embodiments of the present invention. , and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the pending application of the present invention.

Claims (10)

1. A transmission iron tower, the transmission iron tower comprises a tower body (1) vertically arranged, a tower head (2) which is arranged on the upper end of the tower body (1) horizontally and is arranged on the tower head (2) The power transmission conductor is characterized in that: The tower body (1) is a frame structure formed by staggered connection of angle steel main material (3), angle steel inclined material (4) and angle steel horizontal material (5) vertically arranged with the angle steel main material (3). The angle steel main material (3), the angle steel oblique material (4) and the angle steel cross material (5) are connected through the gusset plate assembly (6); A wire anti-dancing device (7) is provided on the power transmission wire. 2. The power transmission tower according to claim 1, characterized in that, the tower head (2) includes horizontally arranged cross arms (8), which are respectively symmetrically arranged on the tower body vertically to the cross arms (8). (1) supporting vertical beams (9) on both sides; The supporting vertical beam (9) and the cross arm (8) form a hexagonal tower window; The left end, the middle end and the right end of the cross-arm (8) are respectively provided with connectors for hanging the transmission wires. 3. The transmission iron tower according to claim 1, characterized in that, the gusset plate assembly (6) includes a leg surface with the angle steel main material (3), angle steel oblique material (4) and angle steel cross material (5) The connected plate body (10) and the reinforcing component (11) arranged vertically to the surface of the plate body (10); The plate body (10) is polygonal, and each side of the polygon is respectively connected with the angle steel leg surface in one direction. 4. The power transmission tower according to claim 3, characterized in that, the reinforcement assembly (11) is arranged on both sides of the angle steel main material (3) along the axial direction of the power transmission tower and along the Ribs composed of ribs are arranged longitudinally. 5. The transmission iron tower as claimed in claim 3, characterized in that, The plate body (10) is provided with fixing bolts vertically arranged on its surface to connect the limb surface, A gasket is provided between the limb surface and the plate body (10); the thickness of the gasket is 3 to 5 mm, its inner diameter is 1.2 to 1.8 mm larger than the screw diameter of the fixing bolt, and its outer diameter is larger than that of the fixing bolt. The diameter of the screw of the bolt is 15 to 25 mm larger. 6. The power transmission tower according to claim 1, characterized in that, the wire anti-dancing device (7) comprises a wire anti-dancing mechanism (12) connected to the transmission wire, an adjustment mechanism (13) arranged on the ground ) and the composite insulator assembly (14) between the wire dance prevention mechanism (12) and the adjustment mechanism (13); The wire dance prevention mechanism (12) includes a frame (15) in the shape of a regular polygon and a fixed wire clip (16) arranged at the apex of the frame (15); The adjustment mechanism (13) includes a pay-off wheel (17) provided with a wire rope, a foundation arranged at the lower end of the pay-off wheel (17) and a controller connected to the pay-off wheel (17). 7. The power transmission tower according to claim 6, characterized in that, the fixed wire clamp (16) comprises a cross shaft (18) connected in sequence, an elastic column (19) and a wire clamp main body (20) and a wire clamp The cable clip composed of the gland; The cross shaft (18) is movably connected with the frame (15), and its axial center is provided with a fixed shaft fixedly connected with the clamp main body (20); The elastic column (19) is arranged around the cross shaft (18); The frame (15) is provided with a vertically arranged fixing plate, and the lower surface of the fixing plate is provided with a hole connected with the composite insulator assembly (14). 8. The power transmission tower according to claim 7, characterized in that, the composite insulator assembly (14) comprises a U-shaped hanging ring connecting the two between the wire anti-dancing mechanism (12) and the steel wire rope in sequence (21), extension pull ring (22), insulator string (23) and the triangular joint plate (24) that links to each other with described insulator string (23) by U-shaped hanging ring (21); The U-shaped hanging ring (21) is a U-shaped plate structure with a hole horizontally provided at one end; the hole is connected to the fixed plate through a bolt, and the other end of the U-shaped hanging ring (21) is sleeved The extension ring (22) having a ring shape; Both ends of the insulator string (23) are provided with equalizing rings (25); the equalizing ring (25) is a circular ring composed of two symmetrically arranged half-rings, and the ends of the half-rings are sealed ball, The pressure equalizing rings (25) arranged at the upper and lower ends of the insulator string (23) are fixed on semicircular supports connected to the U-shaped hanging ring (21) and the U-shaped hanging ring (21) respectively; Described triangular connecting plate (24) is an isosceles triangle, and its one end is provided with the hole that is connected with described U-shaped hanging ring (21) equidistantly along the same straight line, and the other end is provided with the midline on the bottom edge of described triangle to be positioned at. The same suspension line is connected with the connection hole of the steel wire rope. 9. The power transmission tower according to claim 7, wherein the power transmission tower adopts weathering steel as the steel of the power tower; In terms of mass percentage, the weathering steel contains: C, 0.114%; Si, 0.297%; Mn, 0.974%; P, 0.0247%; S, 0.018%; Cr, 0.543%; Ni, 0.393%; ; Cu, 0.316%; Ti, 0.0002%; V, 0.0056%; Nb, 0.019%; 10. The power transmission tower as claimed in claim 1, characterized in that, there is a space between the angle steel main material (3), the angle steel oblique material (4) and the angle steel cross material (5) connected by the gusset plate assembly (6). There is a gap; The number of the angle steel main materials (3) arranged on the lower side of the gusset plate assembly (6) is one or two, and the number of the angle steel main materials (3) arranged on the upper side of the gusset plate assembly (6) The number is one.