CN110011249B - Wind-proof crossarms and transmission towers - Google Patents
Wind-proof crossarms and transmission towers Download PDFInfo
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- CN110011249B CN110011249B CN201910356069.0A CN201910356069A CN110011249B CN 110011249 B CN110011249 B CN 110011249B CN 201910356069 A CN201910356069 A CN 201910356069A CN 110011249 B CN110011249 B CN 110011249B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
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Abstract
本申请具体公开了防风偏横担及输电塔，该防风偏横担包括：支柱绝缘子，其一端用于连接铁塔的塔身；斜拉绝缘子，其一端用于连接铁塔的铁横担，另一端连接于支柱绝缘子远离铁塔的另一端，以使得斜拉绝缘子和支柱绝缘子之间形成带有夹角的稳定支架结构；其中，支柱绝缘子和斜拉绝缘子位于导线和铁塔之间，以阻挡导线靠近铁塔。斜拉绝缘子和支柱绝缘子之间形成带有夹角的稳定支架结构，有效遏制导线风摆与铁塔靠近引起的风偏闪络事故，保证大风工况下的导线与铁塔之间的安全电气间隙。支柱绝缘子和斜拉绝缘子不直接连接导线，而是设置在铁塔和导线之间，从而在电网带电情况下，可直接在铁塔上安装或改造防风偏横担，无需停电操作。
The present application specifically discloses a wind-proof crossarm and a transmission tower, wherein the wind-proof crossarm comprises: a support insulator, one end of which is used to connect to the tower body of the iron tower; a diagonal insulator, one end of which is used to connect to the iron crossarm of the iron tower, and the other end of which is connected to the other end of the support insulator away from the iron tower, so that a stable support structure with an angle is formed between the diagonal insulator and the support insulator; wherein the support insulator and the diagonal insulator are located between the conductor and the iron tower to prevent the conductor from approaching the iron tower. A stable support structure with an angle is formed between the diagonal insulator and the support insulator, which effectively curbs the wind-proof flashover accident caused by the wind swing of the conductor and the iron tower, and ensures a safe electrical clearance between the conductor and the iron tower under strong wind conditions. The support insulator and the diagonal insulator are not directly connected to the conductor, but are arranged between the iron tower and the conductor, so that when the power grid is energized, the wind-proof crossarm can be directly installed or modified on the iron tower without power outage.
Description
Technical Field
The application relates to the technical field of power transmission insulating equipment, in particular to a windproof cross arm and a power transmission tower.
Background
At present, the wind-proof cross arm mainly adopts a composite insulator, and mainly has the following problems: 1. the windbreak cross arm must be installed or modified in a power failure mode, and no windbreak composite insulating cross arm capable of being installed in a charged mode is put into engineering application in China; 2. under the condition of extreme typhoons, the high-pressure end of the existing wind-proof cross arm cannot be fixed, and the wind-proof cross arm with a large length has the risk of overlarge deformation deflection or breakage; 3. because the high-voltage end of the traditional wind deflection preventing cross arm cannot be fixed, the maximum wind deflection angle of the wire cannot be controlled, and the electrical potential safety hazard of wind deflection jump of the wire under typhoon working conditions exists.
Disclosure of Invention
The application mainly solves the technical problems that a windage yaw insulator cannot be installed in an electrified mode and a high-voltage end cannot be fixed.
In order to solve the technical problems, the application adopts a technical scheme that a windproof cross arm is provided, comprising: one end of the post insulator is used for connecting with a tower body of the iron tower; one end of the cable-stayed insulator is used for connecting an iron cross arm of the iron tower, and the other end of the cable-stayed insulator is connected with the other end of the pillar insulator far away from the iron tower, so that a stable bracket structure with an included angle is formed between the cable-stayed insulator and the pillar insulator; the post insulators and the cable-stayed insulators are positioned between the wires and the iron towers so as to prevent the wires from approaching the iron towers.
Wherein, still include: and the one end of the pillar insulator and the one end of the cable-stayed insulator are respectively connected with the iron tower through one connecting clamp.
Wherein, connect anchor clamps include: the two right angle plates are symmetrically clamped at the angle steel of the iron tower, one right angle plate is attached to the inner side wall of the angle steel, the other right angle plate is attached to the outer wall of one side of the angle steel, and the two right angle plates are fixed through a fastener; the flat plate is attached to the outer wall of the other side of the angle steel and is fixed with the two right angle plates through the fasteners respectively; and a space is formed between the flat plate and the other rectangular plate so as to be connected with one end of the post insulator or one end of the cable-stayed insulator.
The right-angle hanging ring or the right-angle hanging plate is clamped and fixed between the right-angle plate and the flat plate, and the Y-shaped hardware fitting is buckled with the right-angle hanging ring or the right-angle hanging plate.
The support insulator comprises a support insulator, wherein one end of the support insulator is connected with a connecting piece, and the connecting piece is clamped and fixed between the right angle plate and the flat plate.
The other end of the support insulator, which is far away from the iron tower, is connected with a flat foot fitting, and the other end of the cable-stayed insulator is connected with a clamping groove fitting; or the other end of the support insulator far away from the iron tower is connected with a clamping groove fitting, and the other end of the cable-stayed insulator is connected with a flat foot fitting; the flat leg hardware is hinged with the clamping groove hardware.
In order to solve the technical problems, another technical scheme adopted by the application is to provide a power transmission tower, wherein the power transmission tower adopts the windproof cross arm, and at least one group of windproof cross arms are arranged on the power transmission tower.
The wind-prevention cross arms are provided with at least two groups and are symmetrically arranged on two sides of the power transmission tower so as to prevent the wires from approaching the power transmission tower.
The wind-proof cross arms are provided with at least two groups, and are symmetrically arranged on two sides of the iron cross arms along the direction of the lead.
Wherein the windbreak cross arm is offset in a vertically downward direction to a side remote from the iron cross arm such that an acute angle is formed between the windbreak cross arm and the vertical plane.
The beneficial effects of the application are as follows: the cable-stayed insulator and the pillar insulator are respectively connected to the iron tower, and a stable bracket structure with an included angle is formed between the cable-stayed insulator and the pillar insulator, so that under extreme typhoon weather, the wire can effectively absorb energy when colliding with the wind-proof cross arm along with wind swing, the wind-proof cross arm is not easy to deform or break, the maximum wind swing angle of the wire can be controlled, the wind-deflection flashover accident caused by the approach of the wire to the iron tower due to wind swing is effectively restrained, and the safe electric gap between the wire and the iron tower under the strong wind working condition is ensured. In addition, the pillar insulator and the cable-stayed insulator are not directly connected with the wire, but are arranged between the iron tower and the wire, so that the wind-proof cross arm can be directly installed or modified on the iron tower under the condition of electrified power grid, power failure operation is not needed, and huge market value is brought to power grid customers.
Drawings
For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic perspective view of one embodiment of a windbreak cross arm of the present application;
FIG. 2 is an enlarged schematic view of the portion A of FIG. 1;
FIG. 3 is an enlarged schematic view of the portion B of FIG. 1;
FIG. 4 is an enlarged schematic view of the portion C of FIG. 1;
fig. 5 is a schematic perspective view of an embodiment of the power transmission tower of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-4, fig. 1 is a schematic perspective view of an embodiment of a windbreak cross arm according to the present application; FIG. 2 is an enlarged schematic view of the portion A of FIG. 1; FIG. 3 is an enlarged schematic view of the portion B of FIG. 1; fig. 4 is an enlarged schematic view of the portion C in fig. 1.
The application provides a windproof cross arm 10, which comprises a post insulator 11 and a cable-stayed insulator 12. The iron tower 01 includes body 011 and horizontal connection in the iron cross arm 012 of body 011 top, and the one end of pillar insulator 11 is used for connecting body 011 of iron tower 01, draws to one side that insulator 12 one end is used for connecting the iron cross arm 012 of iron tower 01 to one end, and the other end is connected in pillar insulator 11 and is kept away from the other end of iron tower 01 to make to one side draw to form the stable support structure that has the contained angle between insulator 12 and the pillar insulator 11. The included angle is specifically an acute angle or a right angle, and may be an obtuse angle, which is not limited herein. The post insulator 11 and the cable-stay insulator 12 are located between the wire 02 and the pylon 01 to block the wire 02 from approaching the pylon 01. In fig. 1, a tower body 011 and an iron cross arm 012 are schematically illustrated, and in this embodiment, a tower 01 is a truss-structured tower commonly used in the art, and will not be described herein.
From the above, it can be seen that the cable-stayed insulator 12 and the pillar insulator 11 are respectively connected to the iron tower 01, and form a stable support structure with an included angle between the two, so that the wind-proof cross arm 10 is not easy to deform or break in extreme typhoon weather, the wire 02 can be effectively supported when being swung along with wind to collide with the wind-proof cross arm 10, the maximum wind swing angle of the wire 02 can be controlled, the wind-deflection flashover accident caused by the approach of the wire 02 and the iron tower 01 due to wind swing is effectively restrained, and the safe electric gap between the wire 02 and the iron tower 01 under the strong wind working condition is ensured. In addition, the post insulator 11 and the cable-stayed insulator 12 are not directly connected with the wire 02, but are arranged between the iron tower 01 and the wire 02, so that the wind-proof cross arm 10 can be directly installed or modified on the iron tower 01 under the condition of electrified power grid, power failure operation is not needed, and huge market value is brought to power grid customers.
In other embodiments, the post insulators 11 and the cable-stayed insulators 12 may be connected to the iron cross arms 012 of the iron tower 01 or may be connected to the tower body 011 of the iron tower 01, and form a stable bracket structure with an included angle therebetween.
In one embodiment, the windbreak cross arm 10 further includes a connecting clamp 13, and one end of the post insulator 11 and one end of the cable-stayed insulator 12 are connected to the pylon 01 through the connecting clamp 13, respectively. The connecting fixture 13 comprises two right-angle plates 131 and a flat plate 132, wherein the two right-angle plates 131 are symmetrically clamped at the angle steel part of the iron tower 01, one right-angle plate 131 is attached to the inner side wall of the angle steel, the other right-angle plate 131 is attached to the outer wall of one side of the angle steel, the two right-angle plates 131 are fixed through fasteners (not shown in the figure), the flat plate 132 is attached to the outer wall of the other side of the angle steel, and the flat plate 132 and the other right-angle plate 131 are respectively fixed through the fasteners, so that a space is formed between the flat plate 132 and the other right-angle plate 131 to connect one end of the post insulator 11 or one end of the cable-stayed insulator 12. Therefore, the connecting clamp 13 fixes the post insulator 11 and the cable-stayed insulator 12 on the iron tower 01 in a clamping mode, holes are not required to be drilled on the iron tower 01, the strength of the iron tower 01 is not affected, and the universality, convenience and simplicity of the connecting clamp 13 at the installation positions of different iron towers 01 can be ensured. Specifically, the fastener can be a bolt or other parts for fastening, and other common connection modes such as welding or cementing can be adopted.
Further, one end of the post insulator 11 is connected with a connecting piece 111, the connecting piece 111 is clamped and fixed between the right angle plate 131 and the flat plate 132, and a fixed connection mode is adopted between the post insulator 11 and the iron tower 01, so that on one hand, the supporting force transmission function of the post insulator 11 in the windbreak cross arm 10 is effectively ensured, and on the other hand, the stability of the windbreak cross arm 10 in the vertical plane in the gravity direction can be ensured. Specifically, the connecting piece 111 is a plate-type connecting piece, and the connecting piece 111 can be fixed by welding, gluing, fastening with bolts, and other common connecting methods after being clamped between the rectangular plate 131 and the flat plate 132.
Further, one end of the cable-stayed insulator 12 is connected with a Y-shaped fitting 121, a right-angle hanging ring 122 is clamped and fixed between a right-angle plate 131 and a flat plate 132, and the Y-shaped fitting 121 is buckled with the right-angle hanging ring 122. Because the Y-shaped hardware fitting 121 and the right-angle hanging ring 122 are in a ring hinge type structure, the Y-shaped hardware fitting has higher freedom degree, and the problem that the windbreak cross arm 10 needs to be installed in an outwards-offset mode can be effectively solved. In addition, the cable-stayed insulator 12 with a specific length has the characteristic that the cable-stayed insulator can be used in a certain length range in space due to the higher degree of freedom, meanwhile, the horizontal installation range of the connecting clamp 13 on the iron cross arm 012 is increased due to the higher degree of freedom, the original connecting node of the iron tower 01 can be effectively avoided, and the universality is improved. Specifically, the right angle hanging ring 122 may be a ZH right angle ring, or another type of right angle hanging ring 122. In other embodiments, the right angle hanging ring 122 may be replaced by a right angle hanging plate, which is not limited herein.
In other embodiments, the cable-stayed insulator 12 and the iron tower 01 may be fixedly connected, and the pillar insulator 11 and the iron tower 01 may be connected with each other by a free degree, which is not limited herein.
Further, the other end of the pillar insulator 11 far away from the iron tower 01 is connected with a flat foot fitting 112, the other end of the cable-stayed insulator 12 is connected with a clamping groove fitting 123, the flat foot fitting 112 is hinged with the clamping groove fitting 123, the pillar insulator 11 and the cable-stayed insulator 12 are hinged with the clamping groove fitting 123 through the flat foot fitting 112, on one hand, the problem of installation dislocation caused by in-plane and out-of-plane angle deviation in the installation process can be effectively solved, on the other hand, the impact action of the cable-stayed insulator 12 caused by the windage wire 02 can be effectively buffered, and the function of protecting the core rod of the cable-stayed insulator 12 is achieved.
In other embodiments, the other end of the post insulator 11 far away from the iron tower 01 may be connected with a clamping groove fitting 123, the other end of the cable-stayed insulator 12 is connected with a flat leg fitting 112, and the flat leg fitting is hinged with the clamping groove fitting 123, which is not limited herein.
The post insulator 11 and the cable-stayed insulator 12 are made of composite materials, and have the characteristics of light weight, simple structure, convenient installation, good insulating property and the like. Specifically, each of the post insulator 11 and the cable-stayed insulator 12 includes an insulator located inside and a rubber umbrella skirt wrapped outside the insulator. In particular, the insulator may be an insulating tube or an insulating mandrel. The insulating tube can be a glass fiber reinforced plastic tube formed by winding and solidifying glass fiber impregnated epoxy resin, or an aromatic fiber tube formed by winding and solidifying aromatic fiber impregnated epoxy resin; the insulating core rod can be a solid core rod or a hollow pultruded pipe which is formed by winding and pultruding glass fiber or aramid fiber impregnated epoxy resin, and the rubber umbrella skirt can be made of high-temperature vulcanized silicone rubber or other rubber materials. In other embodiments, the post insulators 11 and the cable-stayed insulators 12 may be other composite materials, which are not limited herein.
In a specific implementation scenario, the cable-stayed insulator 12 and the pillar insulator 11 are respectively connected to the iron tower 01, and a stable bracket structure with an included angle is formed between the cable-stayed insulator 12 and the pillar insulator, so that the wind-proof cross arm 10 is not easy to deform or break off in extreme typhoon weather, the wire 02 can be effectively supported when being swung along with wind to collide with the wind-proof cross arm 10, the maximum wind swing angle of the wire 02 can be controlled, wind deflection flashover accidents caused by the approach of the wind swing of the wire 02 and the iron tower 01 can be effectively restrained, and the safe electric gap between the wire 02 and the iron tower 01 under a high wind working condition is ensured. In addition, the post insulator 11 and the cable-stayed insulator 12 are not directly connected with the wire 02, but are arranged between the iron tower 01 and the wire 02, so that the wind-proof cross arm 10 can be directly installed or modified on the iron tower 01 under the condition of electrified power grid, power failure operation is not needed, and huge market value is brought to power grid customers.
Meanwhile, one end of the post insulator 11 and one end of the cable-stayed insulator 12 are respectively connected to the iron tower 01 through the connecting clamp 13, punching on the iron tower 01 is not needed, the strength of the iron tower 01 is not affected, and the universality, convenience and simplicity of the connecting clamp 13 at the installation positions of different iron towers 01 can be ensured.
In addition, the support insulator 11 and the iron tower 01 are fixedly connected, so that on one hand, the support force transmission function of the support insulator 11 in the wind-proof cross arm 10 is effectively guaranteed, and on the other hand, the stability of the wind-proof cross arm 10 in the vertical plane of the gravity direction can be guaranteed. The connection mode between the cable-stayed insulator 12 and the iron tower 01 has higher degree of freedom, and the problem that the windage cross arm 10 needs to be installed in an outwards offset mode can be effectively solved. In addition, the cable-stayed insulator 12 with a specific length has the characteristic that the cable-stayed insulator can be used in a certain length range in space due to the higher degree of freedom, meanwhile, the horizontal installation range of the connecting clamp 13 on the iron cross arm 012 is increased due to the higher degree of freedom, the original connecting node of the iron tower 01 can be effectively avoided, and the universality is improved. The pillar insulator 11 and the cable-stayed insulator 12 are hinged through the flat leg fitting 112 and the clamping groove fitting 123, so that the problem of installation dislocation caused by in-plane and out-of-plane angle deviation in the installation process can be effectively solved, and the impact of the wind deflection wire 02 on the cable-stayed insulator 12 can be effectively buffered, so that the function of protecting the core rod of the cable-stayed insulator 12 is achieved. The wind deflection preventing cross arm 10 can be effectively applied to a tension-resistant section part in an engineering line, particularly a tension-resistant jumper wire part at the outer corner side of a corner tower, and solves the problem of large wind deflection swing of a wire under a strong wind working condition.
Referring to fig. 5, fig. 5 is a schematic perspective view of an embodiment of a power transmission tower according to the present application.
According to the power transmission tower 20 provided by the embodiment of the application, the power transmission tower 20 is provided with the windbreak cross arm 10, and the windbreak cross arm 10 is any one of the windbreak cross arms 10. At least one group of wind-proof cross arms 10 is arranged on the power transmission tower 20, and each group of wind-proof cross arms 10 comprises a pillar insulator 11 and a cable-stayed insulator 12 so as to prevent a wire 02 from approaching the tower body 011 under the wind deflection condition.
In yet another embodiment, the windbreak cross arms 10 are provided with at least two sets and symmetrically disposed on both sides of the power transmission tower 20 to block the wires 02 on both sides of the power transmission tower 20 from approaching the power transmission tower 20, respectively. For example, the windbreak cross arm 10 is provided with two, four or more groups, one, two or more groups on each side. In other embodiments, if only one side of the power transmission tower 20 is provided with the wire 02, the windbreak cross arm 10 may be provided only on the side of the power transmission tower 20 provided with the wire 02.
In yet another embodiment, at least two sets of windbreak cross arms 10 are provided on the side of the transmission tower 20 where the wire 02 is provided, and symmetrically disposed on both sides of the iron cross arm 012 in the direction of the wire 02. Therefore, the wind deflection preventing cross arms 10 can effectively prevent the wires 02 from approaching the power transmission tower 20, and at least two groups of wind deflection preventing cross arms 10 can share the impact force of the wind deflection wires 02 so as to improve the overall pressure resistance. In particular, the windbreak cross arm 10 is provided with two sets, and in other embodiments, three, four or more sets may be provided.
In a further embodiment, the windbreak cross arm 10 in a vertically downward direction is offset to the side away from the iron cross arm 012 such that the windbreak cross arm 10 forms an acute angle with the vertical plane. Specifically, the acute angle formed between the windbreak cross arm 10 and the vertical surface is 0 to 30 degrees, such as 0 degrees, 15 degrees, 30 degrees, etc. In addition, in the actual installation, the wedge-shaped adjusting plate can be arranged at the connecting clamp to adjust the angle. The wedge-shaped adjusting plate can flexibly select whether the windbreak cross arm 10 deflects outwards or not and the angle of deflection according to actual working conditions, so that the universality is better.
Specifically, in this embodiment, the post insulator 11 is connected to a first angle steel vertically disposed outside the tower body, the cable-stayed insulator 12 is connected to a second angle steel of the iron cross arm 012, and the second angle steel is horizontally disposed and vertically disposed with respect to the extending direction of the wire 02. Generally, the tower body 011 of the iron tower 01 has a certain taper, and is in a state of being large and small in the whole, so that a plane formed by the second angle steel on the iron cross arm 012 and the first angle steel on the tower body is not a vertical plane, but an included angle is formed between the second angle steel and the vertical plane, and the included angle is generally an acute angle. When the traditional windage yaw cross arm is arranged, the windage yaw insulator is generally and directly arranged in a vertical plane, so that the windage yaw insulator is always stressed due to fixed connection with the tower body and the iron cross arm, is easy to deform or break, and cannot guarantee the reliable windage yaw effect. According to the application, the Y-shaped hardware fitting, the connecting hardware fitting and other connecting structures are arranged, so that the Y-shaped hardware fitting, the connecting hardware fitting and other connecting structures have higher degree of freedom, an acute angle is formed between the windage yaw cross arm 10 and the vertical surface, and the acute angle is similar or identical to the above-mentioned included angle, so that the deformation or breakage of the post insulator 11 and the cable-stayed insulator 12 caused by bearing stress is avoided, and the reliable windage yaw prevention effect is ensured.
In summary, the cable-stayed insulator 12 and the pillar insulator 11 are respectively connected to the iron tower 01, and a stable bracket structure with an included angle is formed between the cable-stayed insulator 12 and the pillar insulator, so that the wind-proof cross arm 10 is not easy to deform or break in extreme typhoon weather, the maximum wind swing angle of the wire 02 can be controlled, the wire 02 can be effectively supported when the wire 02 swings along with wind to collide with the wind-proof cross arm 10, wind-deflection flashover accidents caused by the approach of the wire 02 and the iron tower 01 due to wind swing are effectively restrained, and the safe electric gap between the wire 02 and the iron tower under a high wind working condition is ensured. In addition, the post insulator 11 and the cable-stayed insulator 12 are not directly connected with the wire 02, but are arranged between the iron tower 01 and the wire 02, so that the wind-proof cross arm 10 can be directly installed or modified on the iron tower 01 under the condition of electrified power grid, power failure operation is not needed, and huge market value is brought to power grid customers.
Meanwhile, one end of the pillar insulator 11 and one end of the cable-stayed insulator 12 are respectively connected to the iron tower 01 through connecting clamps, punching on the iron tower 01 is not needed, the strength of the iron tower 01 is not affected, and the universality, convenience and simplicity of the connecting clamps at the installation positions of different iron towers 01 can be ensured.
In addition, the support insulator 11 and the iron tower 01 are fixedly connected, so that on one hand, the support force transmission function of the support insulator 11 in the wind-proof cross arm 10 is effectively guaranteed, and on the other hand, the stability of the wind-proof cross arm 10 in the vertical plane of the gravity direction can be guaranteed. The connection mode between the cable-stayed insulator 12 and the iron tower 01 has higher degree of freedom, and the problem that the windage cross arm 10 needs to be installed in an outwards offset mode can be effectively solved. In addition, the high degree of freedom makes specific length draw insulator 12 possess the characteristics that the homoenergetic is general in the certain length scope in space, simultaneously, the high degree of freedom increases the horizontal installation scope of connecting jig on iron cross arm 012, can effectively avoid original iron tower 01 connected node, increases the commonality. The pillar insulator 11 and the cable-stayed insulator 12 are hinged through the flat leg fitting and the clamping groove fitting, so that the problem of mounting dislocation caused by in-plane and out-of-plane angle deviation in the mounting process can be effectively solved, the impact of the wind deflection wire 02 on the cable-stayed insulator 12 can be effectively buffered, and the function of protecting the core rod of the cable-stayed insulator 12 is achieved. The wind deflection preventing cross arm 10 can be effectively applied to a tension-resistant section part in an engineering line, particularly a tension-resistant jumper wire part at the outer corner side of a corner tower, and solves the problem of large wind deflection swing of a wire under a strong wind working condition.
The foregoing description is only of embodiments of the present application and is not intended to limit the scope of the application, and all equivalent structures or equivalent principle changes made by the specification and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the present application.
Claims (9)
1. A windbreak cross arm comprising:
one end of the post insulator is used for connecting with a tower body of the iron tower;
One end of the cable-stayed insulator is used for connecting an iron cross arm of the iron tower, and the other end of the cable-stayed insulator is connected with the other end of the pillar insulator far away from the iron tower, so that a stable bracket structure with an included angle is formed between the cable-stayed insulator and the pillar insulator;
The post insulators and the cable-stayed insulators are not connected with the wires and are positioned between the wires and the iron towers so as to prevent the wires from approaching the iron towers;
the other end, far away from the iron tower, of the pillar insulator is connected with a flat foot fitting, and the other end of the cable-stayed insulator is connected with a clamping groove fitting; or alternatively
The other end, far away from the iron tower, of the pillar insulator is connected with a clamping groove fitting, and the other end of the cable-stayed insulator is connected with a flat foot fitting;
the flat leg hardware is hinged with the clamping groove hardware.
2. The crossarm as claimed in claim 1, further comprising:
And the one end of the pillar insulator and the one end of the cable-stayed insulator are respectively connected with the iron tower through one connecting clamp.
3. The crossarm of claim 2 wherein the connecting clamp comprises:
The two right angle plates are symmetrically clamped at the angle steel of the iron tower, one right angle plate is attached to the inner side wall of the angle steel, the other right angle plate is attached to the outer wall of one side of the angle steel, and the two right angle plates are fixed through a fastener;
The flat plate is attached to the outer wall of the other side of the angle steel and is fixed with the two right angle plates through the fasteners respectively;
And a space is formed between the flat plate and the other rectangular plate so as to be connected with one end of the post insulator or one end of the cable-stayed insulator.
4. The cross arm according to claim 3, wherein the one end of the cable-stayed insulator is connected with a Y-shaped fitting, a right-angle hanging ring or a right-angle hanging plate is clamped and fixed between the right-angle plate and the flat plate, and the Y-shaped fitting is buckled with the right-angle hanging ring or the right-angle hanging plate.
5. The crossarm of claim 3 wherein said one end of said post insulator is connected to a connector, said connector being captured and secured between said right angle plate and said flat plate.
6. A power transmission tower, characterized in that the power transmission tower adopts the wind-proof cross arm according to any one of claims 1-5, and at least one group of wind-proof cross arms is arranged on the power transmission tower.
7. The power transmission tower of claim 6, wherein the windbreak cross arms are provided in at least two groups and symmetrically disposed on either side of the power transmission tower to block the conductors from approaching the power transmission tower.
8. The power transmission tower according to claim 6, wherein the windbreak cross arms are provided with at least two groups and are symmetrically disposed on both sides of the iron cross arms in the wire direction.
9. The power transmission tower of claim 6, wherein the windage cross-arm is offset in a vertically downward direction to a side away from the iron cross-arm such that the windage cross-arm forms an acute angle with the vertical.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910356069.0A CN110011249B (en) | 2019-04-29 | 2019-04-29 | Wind-proof crossarms and transmission towers |
| PCT/CN2020/081964 WO2020220896A1 (en) | 2019-04-29 | 2020-03-30 | Cross arm resistant against wind deflection, and power transmission tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910356069.0A CN110011249B (en) | 2019-04-29 | 2019-04-29 | Wind-proof crossarms and transmission towers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110011249A CN110011249A (en) | 2019-07-12 |
| CN110011249B true CN110011249B (en) | 2024-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910356069.0A Active CN110011249B (en) | 2019-04-29 | 2019-04-29 | Wind-proof crossarms and transmission towers |
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| Country | Link |
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| CN (1) | CN110011249B (en) |
| WO (1) | WO2020220896A1 (en) |
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| CN110011249B (en) * | 2019-04-29 | 2024-11-12 | 上海神马电力工程有限公司 | Wind-proof crossarms and transmission towers |
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| CN111244864B (en) * | 2020-04-14 | 2021-04-23 | 华北电力大学（保定） | A self-adaptive wind and deflection device for pendant insulator strings |
| CN111540550B (en) * | 2020-05-25 | 2025-01-14 | 江苏神马电力股份有限公司 | Post insulator and method for preparing the same |
| CN114482673A (en) * | 2020-11-13 | 2022-05-13 | 上海神马电力工程有限公司 | transmission tower |
| CN112580231B (en) * | 2020-11-24 | 2024-05-28 | 广东电网有限责任公司阳江供电局 | A simulation method for mechanical characteristics of transmission towers under strong winds |
| CN112252811A (en) * | 2020-11-27 | 2021-01-22 | 上海神马电力工程有限公司 | Connect rotating assembly and transmission tower |
| CN112670929B (en) * | 2020-11-30 | 2022-05-03 | 国网河北省电力有限公司经济技术研究院 | Windage yaw prevention insulator structure |
| CN112854871A (en) * | 2020-12-31 | 2021-05-28 | 江苏嘉康机械制造有限公司 | Energy-saving and environment-friendly automatic contraction device for wind-blowing weather signal tower |
| CN112885543B (en) * | 2021-02-24 | 2025-01-14 | 江苏神马电力股份有限公司 | Post insulators and composite crossarms |
| CN112878788B (en) * | 2021-02-24 | 2025-06-03 | 江苏神马电力股份有限公司 | Composite crossarms and transmission towers |
| CN112878787B (en) * | 2021-02-24 | 2025-08-12 | 江苏神马电力股份有限公司 | Composite cross arm and power transmission tower |
| CN112878786B (en) * | 2021-02-24 | 2025-07-08 | 江苏神马电力股份有限公司 | Composite cross arm and power transmission tower |
| CN113047682A (en) * | 2021-03-30 | 2021-06-29 | 国网河南省电力公司西峡县供电公司 | Low-tower-body double-loop drilling and crossing tower |
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| CN120232396B (en) * | 2025-06-03 | 2025-08-22 | 中国电建集团江西省电力设计院有限公司 | A method and system for monitoring the tilt of transmission line towers |
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Also Published As
| Publication number | Publication date |
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| CN110011249A (en) | 2019-07-12 |
| WO2020220896A1 (en) | 2020-11-05 |
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