CN110284752B

CN110284752B - High-strength cable cross arm for tower

Info

Publication number: CN110284752B
Application number: CN201910594313.7A
Authority: CN
Inventors: 李光海
Original assignee: Hefei Haiyin Tower Co ltd
Current assignee: Hefei Haiyin Tower Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2021-07-27
Anticipated expiration: 2039-07-02
Also published as: CN110284752A

Abstract

The invention discloses a high-strength cable cross arm for a tower, which comprises an annular hoop seat, a first pole, a second pole, an insulator mounting seat, a cable hook groove, a filter plate groove, a drainage groove, a rubber filter plate, a limiting plate, a compression screw and an anti-slip pad. The invention has the beneficial effects that: the device is an integral welding structure, and is flexibly installed on a tower through the annular hoop seat with changeable size, so that the complex installation process of the common cross arm is solved, and each connecting pipe joint of the cross arm is assembled in a welding mode, so that the strength is higher than that of the common assembled cross arm; insulator mount pad is installed in the cross arm bottom to utilize the cross arm to carry out certain covering to porcelain insulator and the cable that supports on it, avoid exposing to the sun for a long time and drench and factors such as flying sand, birds excrement and urine cause insulator and cable surface morals and manners, the other cable hook groove that all has of every insulator mount pad of cross arm below, can put into the hook groove with the cable temporarily and fix, ensure going on smoothly of maintenance work.

Description

High-strength cable cross arm for tower

Technical Field

The invention relates to a cross arm, in particular to a high-strength cable cross arm for a tower, and belongs to the technical field of power transmission devices.

Background

The cross arm is a transversely fixed angle iron arranged on a tower, is provided with a porcelain insulator for supporting an overhead wire, is an important component of the tower, and has the function of installing insulators and hardware fittings for supporting a conducting wire and a lightning conductor and keeping a certain safety distance according to regulations.

The existing cross arm for the tower has certain defects in design, and is specifically shown in the following steps: the insulator and the cable on the general cross arm for the tower are mounted at the top of the cross arm, the ceramic insulator is exposed to the sun, rain and other environments for a long time, the insulator is very easy to crack, the cable can be used for a long time, the maintenance after equipment failure is difficult, and the cable needs to be temporarily detached from the insulator by a maintenance worker during maintenance, the detached cable is not arranged everywhere, and the process progress is influenced.

Disclosure of Invention

The invention aims to solve the problems and provide a high-strength cable cross arm for a tower.

The invention achieves the aim through the following technical scheme that the high-strength cable cross arm for the tower comprises an annular hoop seat used for hooping the tower, and a first stretcher bar and a second stretcher bar welded on the corresponding positions at the two sides of the annular hoop seat, a plurality of compression screws are arranged outside the annular hoop seat, the annular hoop seat is formed by splicing two separated semi-annular hoop sheets under the action of a compression screw rod, the side walls of the two hoop sheets are respectively connected with a first load-bearing rod and a second load-bearing rod, the first stretcher bar, the second stretcher bar and the components arranged on the first stretcher bar and the second stretcher bar are in symmetrical relation, a plurality of insulator mounting seats are arranged at the bottom of the first stretcher bar, an inverted T-shaped cable hook groove is arranged on the bottom wall of the stretcher rod at one side of the insulator mounting seat, a filter plate groove is arranged at the top of the first stretcher rod, the bottom of the filter plate groove is provided with a trapezoidal drainage groove, and a rubber filter plate is arranged in the filter plate groove.

Preferably, the hoop bases are vertically symmetrical and are mounted on the stretcher bar, and the cross arm is simultaneously supported by the plurality of hoop bases, so that the structure of the device is more stable.

Preferably, the inner walls of the stretcher bars at two sides of the filter plate groove are smooth inclined plane structures with narrow tops and wide bottoms, the inclination angle of each inclined plane ranges from 30 degrees to 75 degrees, external liquid such as rainwater is drawn into the filter plate groove through the inclined planes, and then the external liquid flows into the drainage groove after being filtered by the rubber filter plate.

Preferably, an included angle between the top end of the inclined plane of the first stretcher bar and the second stretcher bar and the outer wall of the stretcher bar is designed to be a rounded arc-shaped included angle, so that the included angle of the burnt end of the stretcher bar in the installation process is prevented from scratching an installer.

Preferably, the inner wall of the cable hook groove is smooth, and the joint opening with the angle changed in the hook groove is of an arc-shaped structure, so that unnecessary damage to the cable sleeve when the cable is clamped in the cable groove is avoided.

Preferably, the insulator mounting seats are longitudinally staggered with each other, so that a certain space distance is kept between each insulator and a cable mounted on the insulator, and collision caused by factors such as wind power is avoided.

Preferably, the two ends of the separated hoop sheets are respectively provided with a matched limiting plate, and the two hoop sheets are movably mounted through the matching of the limiting plate and the compression screw rod, and the inner diameter of the annular hoop seat formed by the hoop sheets can be changed according to the size of the tower through the matching and limiting of the limiting plate and the compression screw rod.

Preferably, the anti-slip mat is laid on the inner wall of the annular hoop seat and divided into two anti-slip mats matched with the hoop sheets, and the anti-slip mat is arranged to enable the installation between the device and the tower to be more stable.

Preferably, the bottom wall of the drainage groove is an inclined plane which is inclined from top to bottom in the direction from the annular hoop seat to the port of the stretcher rod, the inclination angle of the inclined plane ranges from 5 degrees to 45 degrees, and liquid and gravel are more easily discharged out of the stretcher rod through the drainage groove 7 through the inclined plane.

The invention has the beneficial effects that:

the device is an integral welding structure, and is flexibly installed on a tower through the annular hoop seat with changeable size, so that the complex installation process of the common cross arm is solved, and each connecting pipe joint of the cross arm is assembled in a welding mode, so that the strength is higher than that of the common assembled cross arm; the insulator mounting seat is arranged at the bottom of the cross arm, so that the cross arm is utilized to cover the porcelain insulator and the cable supported on the porcelain insulator to a certain extent, and the surface weathering of the insulator and the cable caused by long-term exposure to rain, flying sand, bird excrement and other factors is avoided; the filter plate grooves and the drainage grooves are correspondingly arranged on the two stretcher bars, when the rain and snow weather falls, liquid can be discharged in a sliding manner through the drainage grooves, so that the stretcher bars can be quickly dried, the occurrence of water accumulation is reduced, the corrosion of acid substances in the liquid to the cross arm is reduced, and the service life of the device is prolonged; when accessories such as cables or insulators need to be maintained, the operation of workers does not need to cross the obstruction of the cross arm, the workers only need to work below the cross arm, the maintenance efficiency is improved, cable hook grooves are formed beside each insulator mounting seat below the stretcher bar of the cross arm, the cables can be temporarily placed into the hook grooves to be fixed, and the smooth operation is ensured. The device has the characteristics of stable structure, high working efficiency and strong practicability.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a side view of the present invention;

FIG. 4 is an enlarged view of the detail of the area A of the present invention;

in the figure: 1. the annular hoop seat, 2, first load bar, 3, second load bar, 4, insulator mount pad, 5, cable hook groove, 6, filter plate groove, 7, drainage groove, 8, rubber filter plate, 9, limiting plate, 10, sticis screw rod, 11, slipmat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-2, a high-strength cable cross arm for a tower comprises an annular hoop base 1 for hooping the tower, and a first stretcher bar 2 and a second stretcher bar 3 welded on the corresponding positions at the two sides of the annular hoop seat 1, a plurality of compression screws 10 are arranged at the outer side of the annular hoop seat 1, the annular hoop seat 1 is formed by splicing two separated semi-annular hoop sheets through the action of the compression screws 10, and the lateral walls of the two hoop sheets are respectively connected with a first stretcher bar 2 and a second stretcher bar 3, the first stretcher bar 2, the second stretcher bar 3 and components mounted on the first stretcher bar and the second stretcher bar are in symmetrical relation, a plurality of insulator mounting seats 4 are mounted at the bottom of the first stretcher bar 2, cable hook grooves 5 in the shape of an inverted T are formed in the bottom wall of the stretcher bar on one side of the insulator mounting seats 4, filter plate grooves 6 are formed in the tops of the first stretcher bar 2, trapezoidal drainage grooves 7 are formed in the bottoms of the filter plate grooves 6, and rubber filter plates 8 are mounted in the filter plate grooves 6.

Please refer to fig. 2 and fig. 3, which are different from the above embodiment 1 in that: the annular hoop seats 1 are of a pair of hoop-shaped structures which are symmetrical up and down and are jointly arranged on the stretcher bar, and the cross arms are simultaneously arranged and supported through the plurality of annular hoop seats 1, so that the structure of the device is more stable; the inner walls of the stretcher bars at the two sides of the filter plate groove 6 are smooth inclined surface structures with narrow tops and wide bottoms, the inclination angle of the inclined surfaces ranges from 30 degrees to 75 degrees, external liquid such as rainwater is drawn into the filter plate groove 6 through the inclined surfaces, and then the external liquid flows into the drainage groove 7 after being filtered by the rubber filter plate 8; the included angle between the top end of the inclined plane of the first stretcher bar 2 and the second stretcher bar 3 and the outer wall of the stretcher bar is designed to be a rounded arc included angle, so that the included angle of the burnt end of the stretcher bar is prevented from scratching an installer in the installation process; preferably, the inner wall of the cable hook groove 5 is smooth, and the joint opening with the angle change in the hook groove is of an arc-shaped structure, so that unnecessary damage to a cable sleeve when the cable groove 5 clamps the cable is avoided; the insulator mounting seats 4 are longitudinally staggered, so that a certain space distance is reserved between each insulator and a cable mounted on the insulator, and collision caused by factors such as wind power is avoided; two ends of the separated hoop sheets are respectively provided with a matched limiting plate 9, the two hoop sheets are movably mounted through the matching of the limiting plate 9 and the compression screw 10, and the inner diameter of the annular hoop seat 1 formed by the hoop sheets can be changed according to the size of the tower through the matching and limiting of the limiting plate 9 and the compression screw 10; the anti-slip mat 13 is laid on the inner wall of the annular hoop seat 1, the anti-slip mat 13 is divided into two blocks matched with the hoop sheets, and the installation between the device and the tower is more stable through the arrangement of the anti-slip mat 13; the bottom wall of the drainage groove 7 is an inclined plane which inclines from the annular hoop seat 1 to the port direction of the stretcher rod from top to bottom, the inclination angle of the inclined plane ranges from 5 degrees to 45 degrees, and liquid and gravel are more easily discharged out of the stretcher rod through the drainage groove 7 through the inclined plane.

When the device is used, firstly, an installer twists the compression screw 10 to separate the compression screw 10 from the limiting plate 9, so that two hoop sheets forming the annular hoop seat 1 are separated, the device is carried to the top end of a tower, the two hoop sheets are correspondingly installed on the tower, and the limiting plate is screwed through the compression screw 10, so that the annular hoop seat 1 is stably clamped on the tower, and the installation of the device is completed; in the using process, the anti-slip pad 11 can effectively increase the contact friction between the annular hoop seat 1 and a tower, so that the device is more firmly fixed, and the insulator mounting seat 4 is arranged at the bottom of the cross arm, so that the cross arm is utilized to cover the porcelain insulator and a cable supported on the porcelain insulator to a certain extent, and the surface weathering of the insulator and the cable caused by long-term exposure to rain and factors such as flying sand, bird excrement and the like is avoided; the filter plate grooves 6 and the drainage grooves 7 are correspondingly arranged on the two stretcher bars, when rain and snow weather comes, rainwater can fall into the filter plate grooves 6 and slide down through the inclined side walls of the filter plate grooves 6, the rubber filter plate 8 can block large-particle sand stones and other impurities, the rainwater and the snow water can flow into the drainage grooves 7 below the filter plates and slide down and be discharged through the inclined bottom surfaces of the drainage grooves 7, so that the stretcher bars can be quickly dried after the weather turns fine, the occurrence of water accumulation is reduced, the corrosion of acid substances in liquid to the cross arms is reduced, the service life of the device is prolonged, when accessories such as cables or insulators need to be maintained, the operation of maintenance personnel does not need to cross the cross arms, the obstruction of the cross arm structures to the physical activities of the maintenance personnel is reduced, the work is only needed to be carried out below the cross arms, the maintenance efficiency is increased, and the cable hook grooves 5 are arranged beside each insulator mounting seat 4 below the stretcher bars of the cross arms, can put into the hook groove with the cable of dismantling temporarily and carry out the bearing fixed, make the maintenance operation more smooth and easy.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a high strength cable cross arm that shaft tower was used, is including being used for annular hoop seat (1) of clamp on the shaft tower to and weld first load pole (2) and second load pole (3) of dress on annular hoop seat (1) both sides correspondence position, contained angle design between inclined plane top and the load pole outer wall on first load pole (2) and second load pole (3) is the mellow and smooth arc contained angle, a plurality of sticiss screw rod (10) is installed in annular hoop seat (1) outside, just annular hoop seat (1) is formed for two semi-ring hoop pieces of separation through sticising screw rod (10) effect concatenation, and the lateral wall of two hoop pieces is connected its characterized in that with first load pole (2) and second load pole (3) respectively: the novel bearing type cable fixing device is characterized in that the first pole (2), the second pole (3) and components mounted on the first pole and the second pole are in a symmetrical relation, a plurality of insulator mounting seats (4) are mounted at the bottom of the first pole (2), cable hook grooves (5) in the shape of an inverted T are formed in the bottom wall of the pole on one side of each insulator mounting seat (4), a detached cable is fixedly supported through the cable hook grooves (5), a filter plate groove (6) is formed in the top of the first pole (2), trapezoidal drainage grooves (7) are formed in the bottom of the filter plate groove (6), and rubber filter plates (8) are mounted in the filter plate groove (6).

2. The high-strength cable cross arm for the tower as claimed in claim 1, wherein: the annular hoop seats (1) are of a pair of hoop-shaped structures which are symmetrical up and down and are arranged on the stretcher rod together.

3. The high-strength cable cross arm for the tower as claimed in claim 1, wherein: the inner walls of the stretcher bars at two sides of the filter plate groove (6) are all of smooth inclined plane structures with narrow tops and wide bottoms, and the inclination angle of the inclined plane ranges from 30 degrees to 75 degrees.

4. The high-strength cable cross arm for the tower as claimed in claim 1, wherein: the inner wall of the cable hook groove (5) is smooth, and the joint opening with the changed angle in the hook groove is of an arc-shaped structure.

5. The high-strength cable cross arm for the tower as claimed in claim 1, wherein: the insulator mounting seats (4) are longitudinally staggered.

6. The high-strength cable cross arm for the tower as claimed in claim 1, wherein: two ends of the separated hoop sheets are respectively provided with a matched limiting plate (9), and the two hoop sheets are movably installed through the matching of the limiting plates (9) and the compression screw rods (10).

7. The high-strength cable cross arm for the tower as claimed in claim 1, wherein: the inner wall of the annular hoop seat (1) is paved with anti-slip pads (13), and the anti-slip pads (13) are divided into two blocks matched with the hoop sheets.

8. The high-strength cable cross arm for the tower as claimed in claim 1, wherein: the bottom wall of the drainage groove (7) is an inclined plane which is inclined from top to bottom in the direction from the annular hoop seat (1) to the port of the stretcher rod, and the inclination angle of the inclined plane ranges from 5 degrees to 45 degrees.