Power transmission tower

Abstract

According to the power transmission tower, a composite cross arm assembly is arranged on a tower head, one ends of all first cable-stayed insulating rod pieces are connected to different positions of a first crank arm and a second crank arm correspondingly, and one ends of all first supporting column insulating rod pieces are connected to different positions of the first crank arm and the second crank arm correspondingly; the other ends of all the first cable-stayed insulating rod pieces and the other ends of all the first supporting column insulating rod pieces are connected into a middle-phase node in the middle-phase assembling space, the middle-phase node of the middle-phase composite cross arm is provided with at least one wire hanging assembly, and each side-phase composite cross arm is provided with at least one wire hanging assembly. According to the power transmission tower, an original cross arm structure can be replaced on the basis of an original power transmission tower, the height of the wire is adjusted through the improved middle-phase composite cross arm and the improved side-phase composite cross arm, so that the wire can be added with a high-middle-phase wire under the condition that an original main tower structure is not dismantled, and the side-phase wire is lifted.

Description

Technical Field

[0001] The present application relates to the technical field of power transmission, and in particular to a transmission tower. Background Art

[0002] Transmission towers are pole-shaped or tower-shaped structures that support overhead transmission line conductors and overhead ground wires, and keep a certain distance between the transmission line conductors and the ground wires, and between the transmission line conductors and the ground wires and the earth. With the development of the economy, the regional load has increased year by year, and the original traditional transmission lines can no longer meet the growing demand of existing user loads. To solve this problem, it is necessary to increase the transmission capacity of the transmission lines.

[0003] A wine glass tower is a transmission tower with three-phase conductors arranged horizontally and the overall outline of the tower resembling a wine glass. Generally speaking, it is made of metal such as iron, and the wine glass tower is connected to the conductor by a suspension insulator, which plays the role of electrical insulation and mechanical connection between the conductor and the wine glass tower. For conventional single-circuit wine glass towers, there are mainly two conventional methods that can be used to increase the transmission capacity of the transmission line. The first method can be used in a boosting manner, by increasing the voltage level of the original transmission line and increasing the voltage U, thereby achieving an increase in electric energy. The second method can be used in a capacity-increasing manner, by replacing the original transmission line conductor with a conductor with a larger transmission capacity, increasing the current I, thereby achieving an increase in electric energy.

[0004] At present, when adopting the above-mentioned voltage-boosting method, it is usually necessary to dismantle the entire original transmission line and build a new transmission line with a higher voltage level on its basis. This method has the problems of long construction period and high cost. At the same time, due to the increase in the voltage level of the transmission line, the width of the corridor becomes wider, which inevitably requires additional land acquisition. For areas with limited land resources, it is difficult to implement and the land acquisition cost is high.

[0005] When adopting the capacity increase method mentioned above, it is usually necessary to remove the original transmission line conductors of the entire line and install new large-capacity conductors on the original transmission towers. Since the transmission tower has not changed, in order to ensure that the force on the transmission tower does not exceed the design value after the conductor is replaced, some of the rods in the transmission tower can be strengthened, so that the transmission tower can withstand a greater load. However, this modification method of strengthening some rods usually results in the specifications of the large-capacity conductors selected being smaller, and the capacity and current carrying capacity of the conductors are limited. Generally, the effect after the modification is not as good as the voltage boost method mentioned above.

[0006] Therefore, in the face of the technical problems of existing transformation, the art also urgently needs to provide a transmission tower structure that is adaptable to the transformation to increase the transmission capacity of the transmission line. Utility Model Content

[0007] Based on this, it is necessary to provide a transmission tower to address the above-mentioned technical problems.

[0008] The present application provides a transmission tower, the transmission tower comprising:

[0009] A main tower structure, wherein the main tower structure defines a reference horizontal plane, wherein the reference horizontal plane is used to maintain a parallel arrangement with the earth's horizontal plane; the main tower structure comprises a tower body and a tower head, wherein the tower head comprises a first curved arm and a second curved arm, wherein the first curved arm and the second curved arm are arranged at the top of the tower body, and the space between the first curved arm and the second curved arm is used to form a middle phase assembly space, wherein the middle phase assembly space has a top space opening;

[0010] A composite cross-arm assembly, wherein the composite cross-arm assembly is arranged at the tower head, and the composite cross-arm assembly includes a middle-phase composite cross-arm and two side-phase composite cross-arms; wherein the middle-phase composite cross-arm is arranged in the middle-phase assembly space of the main tower structure, and the middle-phase composite cross-arm includes a plurality of first oblique-stayed insulating rods and a plurality of first pillar insulating rods, one end of all the first oblique-stayed insulating rods are respectively connected to different positions of the first curved arm and the second curved arm, and all the first oblique-stayed insulating rods have an angle with the reference horizontal plane, one end of all the first pillar insulating rods are respectively connected to different positions of the first curved arm and the second curved arm, and all the first pillar insulating rods have an angle with the reference horizontal plane, and the other ends of all the first oblique-stayed insulating rods and the other ends of all the first pillar insulating rods are connected to form a middle-phase node in the middle-phase assembly space;

[0011] A hanging wire assembly is used to connect the conducting wires. The number of the hanging wire assemblies is configured to be at least three. The middle phase node of the middle phase composite crossarm is provided with at least one hanging wire assembly. The conducting wire is lower than the middle phase node. Each of the side phase composite crossarms is provided with at least one hanging wire assembly.

[0012] In one embodiment, the hanging wire assembly includes:

[0013] A connecting hardware, one end of which is connected to the middle phase node;

[0014] A wire support is connected to the other end of the connecting hardware, wherein the wire support has a support inner cavity inside, and the support inner cavity is used to pass the wire.

[0015] In one embodiment, the hanging wire assembly further includes:

[0016] A suspension element connected to the other end of the connecting fitting;

[0017] The unit hanger is configured to have at least two unit hangers, and several of the unit hangers are respectively hinged to different positions of the suspension element. The wire supports are configured to have at least two wire supports, and each wire support is connected to one unit hanger, and then connected to the other end of the connecting hardware through the unit hanger and the suspension element.

[0018] In one embodiment, the supporting inner cavity of the wire support is a linear inner cavity having a linear trajectory, and the wire is movably arranged in the supporting inner cavity along the linear trajectory of the supporting inner cavity, and a curved portion is provided on the wire support along at least one end of the linear trajectory, wherein the curved portion gradually expands outward along a direction perpendicular to the linear trajectory in a direction from a central position of the wire support to at least one end thereof.

[0019] In one embodiment, the middle phase composite cross arm comprises:

[0020] A middle phase connection component, the middle phase connection component is used to constitute the middle phase node; wherein the middle phase connection component includes a middle phase node hardware, a plurality of first inclined rod end hardware and a plurality of first pillar rod end hardware, one end of the first inclined rod end hardware is detachably connected to the middle phase node hardware, the other end of each of the first inclined rod end hardware is connected to the end of one of the first inclined insulating rods, the first pillar rod end hardware is detachably connected to the middle phase node hardware, and the end of each of the first pillar insulating rods is plugged and fixed to the inner cavity of one of the first pillar rod end hardware.

[0021] In one embodiment, in the direction from the middle phase node to the first curved arm or the second curved arm, the heights of the first obliquely-stayed insulating rods gradually increase;

[0022] And / or, in the direction from the middle phase node to the first curved arm or the second curved arm, the heights of the plurality of first support insulating rods gradually decrease.

[0023] In one embodiment, two of the side phase composite cross arms are respectively arranged on the first curved arm and the second curved arm of the tower head, and the two side phase composite cross arms are both located outside the middle phase assembly space; wherein, each of the side phase composite cross arms includes a plurality of second oblique insulating rods and a plurality of second support insulating rods, one end of all the second oblique insulating rods in each of the side phase composite cross arms is respectively connected to different positions of the tower head, and all the second oblique insulating rods in each of the side phase composite cross arms have an angle with the reference horizontal plane, one end of all the second support insulating rods in each of the side phase composite cross arms is respectively connected to different positions of the tower head, and all the second support insulating rods in each of the side phase composite cross arms have an angle with the reference horizontal plane, the other end of all the second oblique insulating rods in each of the side phase composite cross arms and the other end of all the second support insulating rods are connected to a side phase node outside the middle phase assembly space, and the side phase node of the side phase composite cross arm is provided with at least one hanging wire assembly, and the conductor is lower than the side phase node.

[0024] In one embodiment, the side phase composite cross arm comprises:

[0025] An edge phase connection component, the edge phase connection component is used to constitute the edge phase node; wherein the edge phase connection component includes an edge phase node hardware, a plurality of second inclined rod end hardware and a plurality of second support rod end hardware, one end of the second inclined rod end hardware is detachably connected to the edge phase node hardware, the other end of each second inclined rod end hardware is connected to the end of a second inclined insulating rod, the second support rod end hardware is detachably connected to the edge phase node hardware, and the end of each second support insulating rod is plugged and fixed to the inner cavity of a second support rod end hardware.

[0026] In one embodiment, in the direction from the edge phase node to the first curved arm or the second curved arm, the heights of the second oblique-stayed insulating rods gradually increase;

[0027] And / or, in the direction from the edge phase node to the first curved arm or the second curved arm, the heights of the plurality of second support insulating rods gradually decrease.

[0028] In one embodiment, the main tower structure further comprises:

[0029] A ground wire support, the ground wire support comprises a first ground wire support and a second ground wire support, the first ground wire support is arranged on the top of the first curved arm, the second ground wire support is arranged on the top of the second curved arm, and the top of the first ground wire support and the top of the second ground wire support are used to connect the ground wire.

[0030] In the above transmission tower, the middle phase composite cross arm can adjust and control the height of the middle phase node formed in the middle phase composite cross arm on the tower head by adjusting the connection positions of all the first inclined insulating rods and all the first pillar insulating rods on the first curved arm and the second curved arm, and adaptively adjust the angles of all the first inclined insulating rods and all the first pillar insulating rods relative to the reference horizontal plane, and adaptively adjust the hanging length of the hanging wire assembly, thereby adjusting the height of the middle phase conductor from the ground. The original cross arm structure can be replaced on the main tower structure of the original wine glass tower, and the height of the middle phase conductor can be adjusted by using the modified middle phase composite cross arm, so that the conductor can be increased without dismantling the original main tower structure. For the same reason, the side phase conductor can also be connected to the side phase node through the hanging wire assembly to lift the side phase conductor, thereby realizing the transmission tower transformation of increasing voltage and capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the plan structure of a transmission tower provided in one embodiment of the present application.

[0032] Figure 2 A schematic diagram of the three-dimensional structure of a transmission tower provided in one embodiment of the present application.

[0033] Figure 3 A schematic diagram of the structure of a tower head and a ground wire bracket provided for one embodiment of the present application.

[0034] Figure 4 A schematic diagram of the partial assembly structure of a first oblique-stayed insulating rod, a first pillar insulating rod and a middle phase connecting assembly provided for one embodiment of the present application.

[0035] Figure 5 A schematic diagram of the partial assembly structure of a second oblique-stayed insulating rod, a second support insulating rod and an edge-connecting component located on one side provided for one embodiment of the present application.

[0036] Figure 6 A schematic diagram of the partial assembly structure of a second oblique-stayed insulating rod, a second support insulating rod and an edge-phase connecting component located on the other side provided for one embodiment of the present application.

[0037] Figure 7 A schematic structural diagram of a transmission tower with a shielding ring provided in one embodiment of the present application.

[0038] Figure 8 For Figure 7 Schematic diagram of the three-dimensional structure of the transmission tower shown.

[0039] Fig. 9 A schematic structural diagram of a transmission tower with a shielding ring provided in accordance with another embodiment of the present application.

[0040] Fig.10 For Fig. 9 Schematic diagram of the three-dimensional structure of the transmission tower shown.

[0041] Fig.11 It is a schematic diagram of the planar structure of a wine glass tower in the prior art. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below. If these terms "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.

[0043] See also Figures 1 to 6 As shown, the present application provides a transmission tower, which includes a main tower structure 1000, a composite cross arm assembly 2000 and a hanging wire assembly 3000. The main tower structure 1000 may be limited to a reference horizontal plane 1000a, which is a constructed virtual plane and does not actually exist. It is only used as an auxiliary reference when describing the relationship between the main tower structure 1000 and the ground. For example, when the transmission tower is installed on the ground, the reference horizontal plane 1000a of the main tower structure 1000 is ensured to be parallel to the earth's horizontal plane, so that the transmission tower is installed vertically relative to the ground. In addition, the reference horizontal plane 1000a is also used to determine the angle and direction of the composite cross arm assembly 2000 set on the main tower structure 1000, which can be seen below.

[0044] like Figure 1 As shown, the main tower structure 1000 includes a tower body 1100 and a tower head 1200. The tower body 1100 is the basic structure of the entire transmission tower and is used for installation in direct contact with the ground, serving as the installation foundation of the entire transmission tower. The tower head 1200 is arranged on the tower body 1100 and is mainly used to set the composite cross arm assembly 2000, the ground wire bracket 4000, the conductor 100 and the ground wire, etc. Figures 1 to 3 As shown, the tower head 1200 includes a first curved arm 1210 and a second curved arm 1220, and the first curved arm 1210 and the second curved arm 1220 are arranged at the top of the tower body 1100, and the first curved arm 1210 and the second curved arm 1220 are arranged in a left-right symmetrical manner. At this time, the space enclosed between the first curved arm 1210 and the second curved arm 1220 can be used to form a middle phase assembly space 1000b.

[0045] Since the bottoms of the first curved arm 1210 and the second curved arm 1220 are connected to the tower body 1100, and the tops of the first curved arm 1210 and the second curved arm 1220 are not connected to each other, the middle phase assembly space 1000b formed between the first curved arm 1210 and the second curved arm 1220 has a top space opening 1000c facing upward, so that the first curved arm 1210 and the second curved arm 1220 form a structure similar to a "U" shape with the tower body 1100. Moreover, the first curved arm 1210 and the second curved arm 1220 can both include an upper curved arm and a lower curved arm connected up and down. Taking the first curved arm 1210 as an example, the lower curved arm is used to be arranged at the top of the tower body 1100 and connected to the tower body 1100, while the upper curved arm is located at the top of the lower curved arm and is used to be connected to the ground wire bracket 4000. The second curved arm 1220 is similarly not described in detail.

[0046] Continue reading Figure 3 As shown, the composite cross arm assembly 2000 is arranged at the tower head 1200, and the composite cross arm assembly 2000 is used to connect the conductor 100 at the tower head 1200, and the conductor 100 includes the conductor 100 of the middle phase and the conductor 100 of the side phase. Therefore, the composite cross arm assembly 2000 may include a middle phase composite cross arm 2100 and two side phase composite cross arms 2200, wherein the middle phase composite cross arm 2100 is arranged in the middle phase assembly space 1000b of the main tower structure 1000, so that the middle phase composite cross arm 2100 can be used to connect the conductor 100 of the middle phase in the middle phase assembly space 1000b, and the two side phase composite cross arms 2200 can be arranged on the left and right sides of the tower head 1200, and are used to connect the conductor 100 of the side phase on the left and right sides of the tower head 1200 (i.e., the outside of the middle phase assembly space 1000b).

[0047] like Figure 3 As shown, the middle phase composite cross arm 2100 includes a plurality of first inclined insulating rods 2110 and a plurality of first support insulating rods 2120, one end of all the first inclined insulating rods 2110 are respectively connected to different positions of the first curved arm 1210 and the second curved arm 1220, and all the first inclined insulating rods 2110 have an angle with the reference horizontal plane 1000a, for example, Figure 3 In the embodiment, one end of all first inclined insulating rods 2110 facing the left and right sides is symmetrically connected to the first curved arm 1210 and the second curved arm 1220, and the connection positions of all first inclined insulating rods 2110 on the first curved arm 1210 or the second curved arm 1220 are also symmetrically arranged. Similarly, one end of all first supporting insulating rods 2120 is respectively connected to different positions of the first curved arm 1210 and the second curved arm 1220, and all first supporting insulating rods 2120 have an angle with the reference horizontal plane 1000a, for example, Figure 3In the figure, one end of all first pillar insulating rods 2120 facing the left and right sides is symmetrically connected to the first curved arm 1210 and the second curved arm 1220, and the connection positions of all first pillar insulating rods 2120 on the first curved arm 1210 or the second curved arm 1220 are also symmetrically arranged on the left and right sides.

[0048] Moreover, after one end of all the first inclined insulating rods 2110 and all the first pillar insulating rods 2120 are connected at the first curved arm 1210 and the second curved arm 1220, the other ends of all the first inclined insulating rods 2110 and the other ends of all the first pillar insulating rods 2120 are also connected to form a middle phase node in the middle phase assembly space 1000b. In one embodiment, in the direction from the middle phase node to the first curved arm 1210 or the second curved arm 1220, the height of the plurality of first inclined insulating rods 2110 gradually increases, and in the direction from the middle phase node to the first curved arm 1210 or the second curved arm 1220, the height of the plurality of first pillar insulating rods 2120 gradually decreases, thereby forming a structure as shown in FIG. Figure 3 The mid-phase composite crossarm 2100 is shown in FIG.

[0049] like Figure 3 As shown, in one embodiment, the middle phase composite cross arm 2100 includes a middle phase connecting component 2130, and the middle phase connecting component 2130 is used to form a middle phase node. Figure 4 As shown, the middle phase connection assembly 2130 includes a middle phase node hardware 2131, a plurality of first inclined rod end hardware 2111 and a plurality of first pillar rod end hardware 2121, one end of each first inclined rod end hardware 2111 is detachably connected to the middle phase node hardware 2131, the other end of each first inclined rod end hardware 2111 is connected to the end of a first inclined insulating rod 2110, the first pillar rod end hardware 2121 is detachably connected to the middle phase node hardware 2131, and the end of each first pillar insulating rod 2120 is plugged and fixed to the inner cavity of a first pillar rod end hardware 2121. In addition, those skilled in the art can also realize the connection between the middle phase connection assembly 2130 and the first inclined insulating rod 2110 and the first pillar insulating rod 2120 through other detachable methods according to actual needs, which is not limited here.

[0050] The number of hanging wire assemblies 3000 is configured to be at least three, and the hanging wire assemblies 3000 are used to connect the conductor 100. At this time, the middle phase node of the middle phase composite cross arm 2100 is provided with at least one hanging wire assembly 3000, and after the middle phase conductor 100 is connected to the hanging wire assembly 3000 on the middle phase composite cross arm 2100, the hanging wire assembly 3000 has a lower droop height relative to the middle phase node, and the conductor 100 is also lower than the middle phase node.

[0051] Therefore, compared to Fig.11 In the transmission tower of the present application, the hanging wire assembly 3000 can be designed to be shorter according to the requirements. The shorter hanging wire assembly 3000 can make the middle phase conductor 100 closer to the middle phase node, increase the distance between the middle phase conductor 100 and the ground, and meet the requirement of increasing the clearance value of the conductor 100 after boosting. Moreover, the windage has a small effect on the length of the middle phase composite cross arm 2100, so that the clearance between the conductor 100 and the main tower structure 100 after boosting still meets the requirements.

[0052] A plurality of first inclined insulating rods 2110 and a plurality of first supporting insulating rods 2120 are connected as a middle phase node, which can meet the electrical clearance after voltage boosting. The conductor 100 is connected to the middle phase node through a hanging wire assembly 3000, which also lifts the conductor 100 of the middle phase, and can also meet the requirement for increased ground clearance of the conductor 100 after voltage boosting.

[0053] Therefore, in the structural design of the above-mentioned middle-phase composite crossarm 2100 of the transmission tower, the middle-phase composite crossarm 2100 can adjust and control the height of the middle-phase node formed in the middle-phase composite crossarm 2100 relative to the ground by adjusting the connection positions of all the first inclined insulating rods 2110 and all the first pillar insulating rods 2120 on the first curved arm 1210 and the second curved arm 1220, and at the same time adaptively adjusting the angles of all the first inclined insulating rods 2110 and all the first pillar insulating rods 2120 relative to the reference horizontal plane 1000a, and adaptively adjusting the hanging length of the hanging wire assembly 3000 to adjust the height of the middle-phase conductor 100 relative to the ground.

[0054] Based on the structural design of the above-mentioned Zhongchen composite crossarm 2100, the original crossarm structure can be replaced on the original wine glass tower, and the original crossarm structure can be replaced by the following method: Figures 1 to 3 The modified middle-phase composite cross arm 2100 shown in the figure adjusts the height of the middle-phase conductor 100, so that the conductor 100 can be increased without dismantling the original main tower structure 1000, thereby realizing the transmission tower modification of increasing voltage and capacity. Fig.11As shown, the main tower structure of the original wine glass tower is the same structure as the main tower structure 1000 of the transmission tower in this application, including the height and size of the tower body 1100, the tower head 1200 and the ground wire support 4000. The slight differences are all considered to be the same structure as the main tower structure 1000. The main tower structure 1000 of the original wine glass tower includes a middle phase bridge structure 10, a first side phase angle steel structure 20 and a second side phase angle steel structure 30, wherein the middle phase bridge structure 10 is a cross arm structure for hanging the middle phase conductor 100 in the original transmission tower, and the middle phase bridge structure 10 needs to be transformed and replaced with the middle phase composite cross arm 2100 of the transmission tower in the present application, the first side phase angle steel structure 20 and the second side phase angle steel structure 30 are cross arm structures for hanging the side phase conductor 100 in the original transmission tower, and the first side phase angle steel structure 20 and the second side phase angle steel structure 30 are respectively located on the left and right sides of the tower head 1200, so the first side phase angle steel structure 20 and the second side phase angle steel structure 30 need to be transformed and replaced with two side phase composite cross arms 2200 in the present application which are also located on the left and right sides of the transmission tower.

[0055] Continue reading Figure 3 As shown, two side phase composite cross arms 2200 are respectively arranged on the first curved arm 1210 and the second curved arm 1220 of the tower head 1200, and the two side phase composite cross arms 2200 are both located outside the middle phase assembly space 1000b. Each side phase composite cross arm 2200 includes a plurality of second inclined insulating rods 2210 and a plurality of second supporting insulating rods 2220, one end of all the second inclined insulating rods 2210 in each side phase composite cross arm 2200 is respectively connected to different positions of the tower head 1200, and all the second inclined insulating rods 2210 in each side phase composite cross arm 2200 have an angle with the reference horizontal plane 1000a. At the same time, one end of all the second supporting insulating rods 2220 in each side phase composite cross arm 2200 is respectively connected to different positions of the tower head 1200, and all the second supporting insulating rods 2220 in each side phase composite cross arm 2200 have an angle with the reference horizontal plane 1000a.

[0056] The other ends of all the second inclined insulating rods 2210 and the other ends of all the second supporting insulating rods 2220 in each side phase composite cross arm 2200 are connected to form a side phase node outside the middle phase assembly space 1000b, for example Figure 3As shown, the two side-phase composite crossarms 2200 located on the left and right sides of the tower head 1200 each construct a side-phase node on the left and right sides of the tower head 1200, and a hanging wire assembly 3000 is provided at the side-phase nodes of the two side-phase composite crossarms 2200. The hanging wire assembly 3000 is consistent with the hanging wire assembly 3000 provided on the middle-phase composite crossarm 2100. After the side-phase conductor 100 is connected to the hanging wire assembly 3000 on the side-phase composite crossarm 2200, the conductor 100 can be made lower than the side-phase node due to the lower drooping height of the hanging wire assembly 3000 relative to the side-phase node.

[0057] In one embodiment, in the direction from the edge phase node to the first curved arm 1210 or the second curved arm 1220, the height of the plurality of second inclined insulating rods 2210 gradually increases, and in the direction from the edge phase node to the first curved arm 1210 or the second curved arm 1220, the height of the plurality of second supporting insulating rods 2220 gradually decreases, thereby forming a Figure 3 The two side composite cross arms 2200 shown in FIG.

[0058] like Figure 3 As shown, in one embodiment, the side phase composite cross arm 2200 includes a side phase connection component 2230, and the side phase connection component 2230 is used to form a side phase node. Figure 5 As shown, the side phase connection assembly 2230 includes a side phase node hardware 2231, a plurality of second inclined tie rod end hardware 2211 and a plurality of second support rod end hardware 2221, one end of the second inclined tie rod end hardware 2211 is detachably connected to the side phase node hardware 2231, the other end of each second inclined tie rod end hardware 2211 is connected to the end of a second inclined insulating rod 2210, the second support rod end hardware 2221 is detachably connected to the side phase node hardware 2231, and the end of each second support insulating rod 2220 is plugged and fixed to the inner cavity of a second support rod end hardware 2221. In addition, those skilled in the art can also realize the connection between the side phase connection assembly 2230 and the second inclined insulating rod 2210 and the second support insulating rod 2220 through other detachable methods according to actual needs, which is not limited here.

[0059] For the same reason, the hanging wire assembly 3000 set on the side phase composite cross arm 2200 can also be designed to be shorter according to the requirements. The shorter hanging wire assembly 3000 can make the relative distance between the side phase conductor 100 and the side phase node closer, increase the distance between the side phase conductor 100 and the ground, and meet the requirement of increasing the ground clearance of the conductor 100 after boosting. Moreover, the smaller influence of the wind deviation on the length of the side phase composite cross arm 2200 makes the clearance between the conductor 100 and the main tower structure 100 after boosting still meet the requirements. Multiple second inclined insulating rods 2210 and multiple second support insulating rods 2220 are used to connect as the side phase node, which can meet the electrical clearance after boosting. The conductor 100 is connected to the side phase node through the hanging wire assembly 3000, which also raises the side phase conductor 100, and can also meet the requirement of increasing the ground clearance of the conductor 100 after boosting.

[0060] Therefore, in the structural design of the above-mentioned side-phase composite crossarm 2200 of the transmission tower, the side-phase composite crossarm 2200 can adjust and control the height of the side-phase node formed in the side-phase composite crossarm 2200 relative to the ground by adjusting the connection positions of all the second inclined insulating rods 2210 and all the second supporting insulating rods 2220 on the first curved arm 1210 and the second curved arm 1220, and at the same time adaptively adjusting the angles of all the second inclined insulating rods 2210 and all the second supporting insulating rods 2220 relative to the reference horizontal plane 1000a, and adaptively adjusting the hanging length of the hanging wire assembly 3000 to adjust the height of the side phase conductor 100 relative to the ground.

[0061] Based on the structural design of the side phase composite cross arm 2200, the original cross arm structure can be replaced on the main tower structure 1000 of the original transmission tower, and the cross arm structure can be replaced by the side phase composite cross arm 2200. Figures 1 to 3 The modified side-phase composite cross arm 2200 shown in the figure adjusts the height of the side-phase conductor 100, so that the conductor 100 of the side phase can be raised without dismantling the original main tower structure 1000, thereby realizing the transmission tower modification of increasing voltage and capacity.

[0062] Continue reading Figure 4In one embodiment, the hanging wire assembly 3000 includes a connecting fitting 3100 and a wire support 3200, one end of the connecting fitting 3100 is connected to the middle phase node fitting 2131, and the wire support 3200 is connected to the other end of the connecting fitting 3100, wherein the connecting fitting 3100 can be a connecting plate of fixed length, or can also be formed by a plurality of connecting plates fixedly connected in sequence. The connecting plate can be a PT adjustment plate, a parallel hanging plate, etc., and different connecting plates can be selected according to actual working conditions to be hinged into the connecting fitting 3100, so that it has different lengths to meet different wire height requirements to the ground. The wire support 3200 has a supporting inner cavity 3200a inside, and the supporting inner cavity 3200a is used to pass the wire 100. For example, the wire support 3200 can be a wire clamp having a supporting wire 100 and other similar structures that can support the wire 100, which are not limited here. Therefore, in order to stably pass the wire 100, the wire support 3200 can be designed to be straight and have a certain length. Therefore, the supporting inner cavity 3200a of the wire support 3200 is also adaptively presented as a straight inner cavity. The straight inner cavity has a straight trajectory. The wire 100 is movably passed through the supporting inner cavity 3200a along the straight trajectory of the supporting inner cavity 3200a, so that the wire 100 can be passed through the supporting inner cavity 3200a of the wire support 3200 along the length direction of the wire support 3200, and a stable package is formed based on the length design of the wire support 3200.

[0063] Moreover, if Figure 4 As shown, a curved portion 3210 is provided on at least one end of the wire support 3200 along the straight track. For example, curved portions 3210 are designed at both ends of the wire support 3200, wherein the curved portion 3210 gradually expands outward in a direction perpendicular to the straight track from the central position of the wire support 3200 to at least one end thereof. Figure 4 In the up and down direction shown in , the curved portion 3210 is in a gradually sagging state. Therefore, as the curved portion 3210 gradually sags, the conductor 100 can form a natural sag between the two transmission towers as the curved portion 3210 gradually sags, ensuring that the conductor 100 is not tight.

[0064] It can be understood that if there is no structural design of the curved portion 3210, the supporting inner cavity 3200a inside the conductor support 3200 is straight in the horizontal direction, and the conductor 100 will form a horizontally horizontal tight (straight) state between the two transmission towers. If the conductor 100 bends downward due to gravity, it will be damaged. Based on the structural design of the curved portion 3210, the conductor 100 will form an arc-shaped state with a droop in the middle between the two transmission towers, avoiding the conductor 100 from being damaged. Moreover, as the conductor 100 extends to the two ends of the conductor support 3200, the curved portions 3210 at the two ends of the conductor support 3200 can also avoid the conductor 100 to prevent the sharp ends from cutting the surface of the conductor 100.

[0065] Continue reading Figure 4 As shown, in one embodiment, the hanging wire assembly 3000 further includes a hanging element 3300 and a unit hanger 3400, the hanging element 3300 is connected to the other end of the connecting hardware 3100, the number of the unit hangers 3400 is configured to be at least two, and the plurality of unit hangers 3400 are respectively hinged to different positions of the hanging element 3300, such as Figure 4 As shown, the suspension element 3300 can adopt a structure such as a triangular connecting plate that can centrally connect several unit hangers 3400, which is not limited here. The number of wire supports 3200 is configured to be at least two, so each wire support 3200 can be connected to a unit hanger 3400, and then connected to the other end of the connecting hardware 3100 through the unit hanger 3400 and the suspension element 3300. At this time, multiple unit hangers 3400 can be set at the same time through the suspension element 3300, and multiple wire supports 3200 can be connected using multiple unit hangers 3400, so as to achieve multiple wires 100 hanging on the same hanging wire assembly 3000.

[0066] The middle phase node and the side phase node of the composite cross arm assembly 2000 are directly hung with the metal hanging wire assembly 3000, which bears the nominal voltage of the line. The protruding part is very likely to have electric field distortion, and there is a high probability of corona discharge, which affects the life of the hanging wire assembly 3000 and the quality of people's living environment. Figures 7 to 10 In the embodiment, a runway-shaped, semicircular, and other equalizing shielding rings are arranged on the outside of the hanging wire assembly 3000. The shielding rings have a large radius of curvature and a smooth metal surface, so that no extreme electric field distortion will be generated. Therefore, placing the shielding rings on the middle phase node and the side phase node can well cover the protruding metal surface underneath, making the electric field area around the middle phase node and the side phase node uniform, solving the above-mentioned problem. Among them, the shielding ring can be parallel to the cross arm direction or perpendicular to the cross arm direction, playing the same role, that is, preventing the metal fittings from generating corona and making the surrounding electric field area uniform.

[0067] Continue reading Figure 3As shown, in one embodiment, the main tower structure 1000 also includes a ground wire support 4000, and the ground wire support 4000 includes a first ground wire support 4100 and a second ground wire support 4200. The first ground wire support 4100 is arranged at the top of the first curved arm 1210, and the second ground wire support 4200 is arranged at the top of the second curved arm 1220. The top of the first ground wire support 4100 and the top of the second ground wire support 4200 are used to connect the ground wire. For the case of a higher boost voltage, the ground wire support 4000 can be raised, and the middle phase composite cross arm 2100 is appropriately moved up a certain height on the tower head 1200, and the space of the middle phase assembly space 1000b becomes larger, which can meet the requirements of a larger gap after boosting. At the same time, the side phase composite cross arm 2200 is moved up at the same time, and the three-phase conductors 100 are located on the same horizontal plane. The distance between the conductor 100 and the ground is increased to meet the distance requirement of the conductor 100 to the ground, and a higher voltage level boost is achieved.

[0068] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A transmission tower, characterized in that: The transmission tower comprises: A main tower structure, wherein the main tower structure defines a reference horizontal plane, wherein the reference horizontal plane is used to maintain a parallel arrangement with the earth's horizontal plane; the main tower structure comprises a tower body and a tower head, wherein the tower head comprises a first curved arm and a second curved arm, wherein the first curved arm and the second curved arm are arranged at the top of the tower body, and the space between the first curved arm and the second curved arm is used to form a middle phase assembly space, wherein the middle phase assembly space has a top space opening; A composite cross-arm assembly, wherein the composite cross-arm assembly is arranged at the tower head, and the composite cross-arm assembly includes a middle-phase composite cross-arm and two side-phase composite cross-arms; wherein the middle-phase composite cross-arm is arranged in the middle-phase assembly space of the main tower structure, and the middle-phase composite cross-arm includes a plurality of first oblique-stayed insulating rods and a plurality of first pillar insulating rods, one end of all the first oblique-stayed insulating rods are respectively connected to different positions of the first curved arm and the second curved arm, and all the first oblique-stayed insulating rods have an angle with the reference horizontal plane, one end of all the first pillar insulating rods are respectively connected to different positions of the first curved arm and the second curved arm, and all the first pillar insulating rods have an angle with the reference horizontal plane, and the other ends of all the first oblique-stayed insulating rods and the other ends of all the first pillar insulating rods are connected to form a middle-phase node in the middle-phase assembly space; A hanging wire assembly is used to connect the conducting wires. The number of the hanging wire assemblies is configured to be at least three. The middle phase node of the middle phase composite crossarm is provided with at least one hanging wire assembly. The conducting wire is lower than the middle phase node. Each of the side phase composite crossarms is provided with at least one hanging wire assembly.

2. The transmission tower according to claim 1, characterized in that: The hanging wire assembly comprises: A connecting hardware, one end of which is connected to the middle phase node; A wire support is connected to the other end of the connecting hardware, wherein the wire support has a support inner cavity inside, and the support inner cavity is used to pass the wire.

3. The transmission tower according to claim 2, characterized in that: The hanging wire assembly also includes: A suspension element connected to the other end of the connecting fitting; The unit hanger is configured to have at least two unit hangers, and several of the unit hangers are respectively hinged to different positions of the suspension element. The wire supports are configured to have at least two wire supports, and each wire support is connected to one unit hanger, and then connected to the other end of the connecting hardware through the unit hanger and the suspension element.

4. The transmission tower according to claim 3, characterized in that: The supporting inner cavity of the wire support is a linear inner cavity having a linear track, and the wire is movably arranged in the supporting inner cavity along the linear track of the supporting inner cavity, and a curved portion is provided on the wire support along at least one end of the linear track, wherein the curved portion gradually expands outward along a direction perpendicular to the linear track in a direction from a central position of the wire support to at least one end thereof.

5. The transmission tower according to claim 1, characterized in that: The middle phase composite cross arm comprises: A middle phase connection component, the middle phase connection component is used to constitute the middle phase node; wherein the middle phase connection component includes a middle phase node hardware, a plurality of first inclined rod end hardware and a plurality of first pillar rod end hardware, one end of the first inclined rod end hardware is detachably connected to the middle phase node hardware, the other end of each of the first inclined rod end hardware is connected to the end of one of the first inclined insulating rods, the first pillar rod end hardware is detachably connected to the middle phase node hardware, and the end of each of the first pillar insulating rods is plugged and fixed to the inner cavity of one of the first pillar rod end hardware.

6. The transmission tower according to claim 1, characterized in that: In the direction from the middle phase node to the first curved arm or the second curved arm, the heights of the first obliquely-stayed insulating rods gradually increase; And / or, in the direction from the middle phase node to the first curved arm or the second curved arm, the heights of the plurality of first support insulating rods gradually decrease.

7. The transmission tower according to claim 1, characterized in that: The two side-phase composite cross-arms are respectively arranged on the first curved arm and the second curved arm of the tower head, and the two side-phase composite cross-arms are both located outside the middle-phase assembly space; wherein, each side-phase composite cross-arm comprises a plurality of second oblique-stayed insulating rods and a plurality of second supporting insulating rods, one end of all the second oblique-stayed insulating rods in each side-phase composite cross-arm is respectively connected to different positions of the tower head, and all the second oblique-stayed insulating rods in each side-phase composite cross-arm have an angle with the reference horizontal plane, one end of all the second supporting insulating rods in each side-phase composite cross-arm is respectively connected to different positions of the tower head, and all the second supporting insulating rods in each side-phase composite cross-arm have an angle with the reference horizontal plane, the other end of all the second oblique-stayed insulating rods in each side-phase composite cross-arm and the other end of all the second supporting insulating rods are connected to a side-phase node outside the middle-phase assembly space, and the side-phase node of the side-phase composite cross-arm is provided with at least one hanging wire assembly, and the conductor is lower than the side-phase node.

8. The transmission tower according to claim 7, characterized in that: The side phase composite cross arm comprises: An edge phase connection component, the edge phase connection component is used to constitute the edge phase node; wherein the edge phase connection component includes an edge phase node hardware, a plurality of second inclined rod end hardware and a plurality of second support rod end hardware, one end of the second inclined rod end hardware is detachably connected to the edge phase node hardware, the other end of each second inclined rod end hardware is connected to the end of a second inclined insulating rod, the second support rod end hardware is detachably connected to the edge phase node hardware, and the end of each second support insulating rod is plugged and fixed to the inner cavity of a second support rod end hardware.

9. The transmission tower according to claim 7, characterized in that: In the direction from the edge phase node to the first curved arm or the second curved arm, the heights of the plurality of the second oblique-stayed insulating rods gradually increase; And / or, in the direction from the edge phase node to the first curved arm or the second curved arm, the heights of the plurality of second support insulating rods gradually decrease.

10. The transmission tower according to claim 1, characterized in that: The main tower structure also includes: A ground wire support, the ground wire support comprises a first ground wire support and a second ground wire support, the first ground wire support is arranged on the top of the first curved arm, the second ground wire support is arranged on the top of the second curved arm, and the top of the first ground wire support and the top of the second ground wire support are used to connect the ground wire.

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