CN216476621U

CN216476621U - Power transmission tower

Info

Publication number: CN216476621U
Application number: CN202122354815.8U
Authority: CN
Inventors: 王鑫龙; 吴金霖; 李维勃; 李焱琳; 王晨
Original assignee: Shanghai Shenma Electric Power Engineering Co ltd
Current assignee: Shanghai Shenma Electric Power Engineering Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-05-10
Anticipated expiration: 2031-09-27

Abstract

The application discloses transmission tower includes: body of the tower, compound cross arm, coupling assembling are including connecting bottom plate, engaging lug, connecting bottom plate and body of the tower fixed connection, and the engaging lug is fixed to be set up on connecting the bottom plate, engaging lug and compound cross arm fixed connection. The connecting assembly can ensure that the cross arm is effectively connected with the tower body, the cross arm is uniformly stressed, the mounting difficulty is reduced, and the mounting time and cost are saved; simultaneously, through the area of contact who increases between coupling assembling and the body of the tower and the quantity of stress point for the atress of body of the tower is more balanced, has promoted transmission tower overall structure's stability.

Description

Power transmission tower

Technical Field

The application relates to the technical field of power transmission, in particular to a power transmission tower.

Background

The transmission line is an important life line for national economic development, once the transmission line in a certain area fails, immeasurable economic loss can be caused to users in the area served by the transmission line, so that the normal operation of the transmission line is very important for daily life and economic development, and the transmission tower is a necessary condition for ensuring the normal operation of the transmission line.

Most of the existing power transmission towers comprise a tower body and a cross arm for hanging a power transmission conductor, wherein the cross arm is arranged on the tower body and extends outwards for a certain length distance. The inventor of this application finds that present cross arm and body of a tower connecting piece structure requires higher to the installation accuracy of cross arm and body of a tower, and body of a tower stress is concentrated simultaneously, under extreme weather, may have the risk that the body of a tower is buckled.

SUMMERY OF THE UTILITY MODEL

The utility model provides a power transmission tower can reduce the installation degree of difficulty, improves the degree of matching of cross arm and body of the tower, reduces the possibility of doing over again, optimizes the body of the tower atress simultaneously.

In order to solve the above problems, one solution adopted by the present application is: provided is a power transmission tower including: body of the tower, compound cross arm, coupling assembling is including connecting bottom plate, engaging lug, connect the bottom plate with body of the tower fixed connection, the engaging lug is fixed set up in connect on the bottom plate, the engaging lug with compound cross arm fixed connection.

Wherein, coupling assembling through first mounting with body of the tower fixed connection, first mounting includes two angle steel, two the angle steel back-to-back clamp is fixed in the body of the tower and with connecting bottom plate fixed connection.

The connecting lugs are four and are symmetrically distributed in the center of the connecting base plate in a cross manner, and one ends of the four connecting lugs are mutually abutted.

The composite cross arm comprises a composite post insulator, and the composite post insulator is fixedly connected to the connecting lug through a first connecting piece.

Wherein, the composite post insulator includes first flange, first flange includes sleeve and cross picture peg, sleeve fixed connection in the one end of composite post insulator, the cross picture peg fixed set up in the sleeve is kept away from the one end of composite post insulator, the cross picture peg with pass through between the engaging lug first connecting piece fixed connection.

Wherein, the first connecting piece is angle steel arranged back to back.

The power transmission tower further comprises a second connecting piece, one end of the second connecting piece is fixedly connected to the tower body, and the other end of the second connecting piece is fixedly connected with the connecting bottom plate.

The power transmission tower further comprises a support, and the support extends from the tower body to a direction far away from the tower body in the extension direction of the lead.

The two supports are respectively arranged on two sides of the tower body.

The composite cross arm comprises at least two diagonal insulators, wherein the two diagonal insulators are fixedly connected to the two brackets respectively.

The beneficial effect of this application is: can ensure cross arm and body of the tower effectively through adopting coupling assembling, guarantee that the cross arm atress is even, reduce the installation degree of difficulty, save installation time and cost. The connecting bottom plate is connected with the first flange through the first connecting piece, so that the relative position between the tower body and the composite cross arm can be adjusted, the requirement on the connection precision between the composite cross arm and the tower body is reduced, and the installation difficulty is reduced; simultaneously, through the area of contact who increases between coupling assembling and the body of the tower and the quantity of stress point for the atress of body of the tower is more balanced, has promoted transmission tower overall structure's stability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a schematic structural diagram of an embodiment of a transmission tower provided herein;

FIG. 2 is a schematic structural view of a connection assembly provided herein;

fig. 3 is a schematic structural diagram of another embodiment of a transmission tower provided herein.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

Referring to fig. 1 to 2, the transmission tower 10 includes: the combined cross arm comprises a tower body 100, a combined cross arm 200 and a connecting assembly 300, wherein the combined cross arm 200 is fixedly connected to the tower body 100 through the connecting assembly 300. Specifically, the connection assembly 300 includes a connection base plate 301 and a connection lug 302, wherein the connection lug 302 is fixedly disposed on the connection base plate 301, the connection base plate 301 is fixedly connected to the tower body 100, and the connection lug 302 is fixedly connected to the composite cross arm 200, so as to fixedly connect the tower body 100 and the composite cross arm 200.

In one embodiment, the connection bottom plate 301 is provided with a plurality of first through holes 3011, a plurality of second through holes (not shown) are also provided at corresponding positions of the angle steel of the tower body 100, and the connection bottom plate 301 and the tower body 100 are fixedly connected through the first through holes 3011 and the second through holes by fasteners (not shown).

Preferably, in order to make the connection between the connection base plate 301 and the tower body 100 more stable while being balanced in stress, in another embodiment, with continued reference to fig. 1, the transmission tower 10 further includes a first fixture 400, and the connection assembly 300 is fixedly connected to the tower body 100 through the first fixture 400. Specifically, the first fixing member 400 includes two angle steels 401, a third through hole (not shown) is disposed on a position of the angle steel 401 corresponding to the first through hole 3011, and the angle steel 401, the tower body 100, and the connection base plate 301 are fixedly connected to each other by fasteners passing through the first through hole 3011, the second through hole, and the third through hole. Specifically, one side of the two angle steels 401 perpendicular to the connecting bottom plate 301 is clamped and fixed to the tower body 100 back to back, and the two angle steels pass through the angle steels 401, the tower body 100 and the angle steels 401 sequentially through a fastening piece to be fastened and connected. Through setting up first mounting 400, the tower body 100 and the interaction force between the connection bottom plate 301 can be evenly transmitted to the whole root angle steel with first mounting 400 fixed connection in the tower body 100 through first mounting 400, and not only concentrate on the position of connecting bottom plate 301 and tower body 100 contact, through increase lifting surface area promptly to reduce the problem that the atress is excessively concentrated, make the atress of tower body 100 more balanced.

Further, in order to connect the composite cross arm 200 firmly, the connecting assembly 300 is provided with four connecting lugs 302, the four connecting lugs 302 are symmetrically distributed in the center of the connecting bottom plate 301 in a cross shape, and one ends of the four connecting lugs 302 are mutually abutted. Engaging lug 302 is right angle trapezoidal form, and a right-angle side of engaging lug 302 is hugged closely in connecting bottom plate 301 and is set up, and the height of engaging lug 302 reduces gradually from the center of connecting bottom plate 301 to the border of connecting bottom plate 301, when improving the joint strength of engaging lug 302, reduces material cost. The other right-angled sides of the four engaging lugs 302 abut against each other. Specifically, the connecting lug 302 is fixedly disposed on the connecting base plate 301 by welding. Of course, in other embodiments, the number of the connecting lugs is not limited to four, and may be two, three or more, so as to stably connect the composite cross arm, which is not limited herein.

The composite cross arm 200 includes a composite post insulator 201, and the composite post insulator 201 is fixedly connected to the connecting lug 302 through a first connecting member 501.

Specifically, composite post insulator 201 includes first flange 211, and first flange 211 includes sleeve 2111 and cross board 2112, and sleeve 2111 fixed connection is in the one end of composite post insulator 201, and cross board 2112 is fixed to be set up in the one end of sleeve 2111 keeping away from composite post insulator 201, and cross board 2112 and engaging lug 302 are through first connecting piece 501 fixed connection.

Wherein, the composite post insulator 201 is fixedly connected with the sleeve 2111 by crimping or cementing; the cross inserting plate 2112 and the sleeve 2111 can be fixedly connected by welding, and is not particularly limited herein.

Preferably, one end of the cross insert plate 2112 away from the sleeve 2111 abuts against the top of the connecting lug 302, the first connecting member 501 is four angle steels arranged back to back, each angle steel is arranged between two connecting lugs 302, and each angle steel is fixedly connected with the connecting lug 302, the cross insert plate 2112 and the adjacent angle steel, so as to fixedly connect the connecting assembly 300 and the composite cross arm 200. In other embodiments, the first connecting member may also be two, three or more angle irons, so as to fixedly connect the cross inserting plate and the connecting lug, which is not limited herein. Or the first connecting piece can be a connecting plate structure instead of an angle steel, and the cross inserting plate and the connecting lug can be fixedly connected.

Specifically, a through hole is formed in the cross inserting plate 2112, a through hole is also formed in a corresponding position of the connecting lug 302 close to the center of the connecting base plate 301, and correspondingly, a through hole is also formed in a corresponding position of the first connecting piece 501; the cross insert plate 2112, the connecting lug 302 and the first connecting member 501 are fixedly connected through the through holes by fasteners (not shown).

Preferably, the first connecting member 501 is provided with a plurality of groups of through holes, each group of through holes can be used for fixedly connecting the cross inserting plate 2112 with the connecting lug 302, and the relative distance between the cross inserting plate 2112 and the connecting lug 302 can be adjusted by arranging the plurality of groups of through holes, so that the installation redundancy is increased, the installation difficulty is reduced, and the installation efficiency is improved. Of course, in other embodiments, the cross inserting plate and the connecting lug can be fixedly connected with the first connecting piece by welding.

Preferably, in order to make the connection of the composite cross arm 200 more stable, the transmission tower 10 further includes a second connector 502, and one end of the second connector 502 is fixedly connected to the tower body 100, and the other end is fixedly connected to the connection assembly 300. Preferably, there are four second connecting members 502, one end of each of the four second connecting members 502 is fixedly connected to four angle steel joints of the tower body 100, and the other end is fixedly connected to four corners of the connecting bottom plate 301. The second connecting member 502 can share a certain stress for the connecting member 300, so that the force applied to the tower body by the composite cross arm 200 is distributed more uniformly, and the problem of stress concentration is reduced.

Preferably, in order to enhance the bearing capacity of the composite cross arm 200, the composite cross arm 200 further includes two diagonal insulators 202, and the center line of the composite post insulator 201 and the center lines of the two diagonal insulators 202 are located in the same horizontal plane.

In order to meet the installation requirements of the composite cross arm 200 without increasing the corridor width of the transmission tower 10, the transmission tower 10 further includes a bracket 110. The bracket 110 is disposed on the tower 100, and the bracket 110 extends from the tower 100 in a direction in which the wires extend away from the tower 100, and extends a certain width in the direction in which the wires extend. In this embodiment, the direction in which the bracket 110 extends is perpendicular to the center line of the composite post insulator 201.

Preferably, there are two brackets 110, the two brackets 110 are respectively disposed on two sides of the tower body 100, and the two diagonal insulators 202 are respectively fixedly connected to the two brackets 110. Specifically, one end of each of the two diagonal insulators 202 is fixedly connected to one end of the composite post insulator 201 away from the tower body 100 through an end connection fitting, and the other end of each of the two diagonal insulators is fixedly connected to the positions of the two supports 110 away from the tower body 100, so that a stable triangular structure is formed between the whole composite cross arm 200 and the tower body 100; meanwhile, a proper angle is formed between the two diagonal insulators 202, so that the moment is reduced, and the stress condition of the composite cross arm 200 is optimized.

In another embodiment, as shown in fig. 3, composite cross arm 200 includes three diagonal tension insulators 202 and one composite post insulator 201. The central lines of the two diagonal insulators 202 and the central line of the composite post insulator 201 are positioned in the same horizontal plane; the center line of the other cable-stayed insulator 202 and the center line of the composite post insulator 201 are positioned in the same vertical plane.

Specifically, one end of each of the three diagonal insulators 202 is fixedly connected to one end of the composite post insulator 201, which is far away from the tower body 100, through an end connection fitting, the other ends of the two diagonal insulators 202 located at the same level are respectively and fixedly connected to positions, which are far away from the tower body 100, of the two brackets 110 located at two sides of the tower body 100, and the other end of the other diagonal insulator 202 is fixedly connected to a position, which is above the position, where the composite post insulator 201 is connected to the tower body 100.

In this case, the composite cross arm 200 and the tower body 100 form a stable triangular structure in a three-dimensional space, and simultaneously, the compression resistance of the post insulator 201 and the tensile resistance of the diagonal insulator 202 are fully utilized to provide stable support for the wires.

To sum up, this application can ensure cross arm and body of the tower effective connection through adopting coupling assembling, guarantees that the cross arm atress is even, reduces the installation degree of difficulty, saves installation time and cost. The connecting bottom plate is connected with the first flange through the first connecting piece, so that the relative position between the tower body and the composite cross arm can be adjusted, the requirement on the connection precision between the composite cross arm and the tower body is reduced, and the installation difficulty is reduced; simultaneously, through the area of contact and the quantity of stress point that increase between link fitting and the body of the tower for the atress of body of the tower is more balanced, has promoted transmission tower overall structure's stability.

Claims

1. A transmission tower, comprising: body of the tower, compound cross arm, coupling assembling is including connecting bottom plate, engaging lug, connect the bottom plate with body of the tower fixed connection, the engaging lug is fixed set up in connect on the bottom plate, the engaging lug with compound cross arm fixed connection.

2. The transmission tower according to claim 1, wherein the connection assembly is fixedly connected to the tower body by a first fixing member, the first fixing member comprising two angle steels, the two angle steels being clamped back-to-back to the tower body and fixedly connected to the connection base plate.

3. The transmission tower according to claim 1, wherein the number of the lugs is four, four lugs are symmetrically distributed in the center of the connection bottom plate in a cross shape, and one ends of the four lugs abut against each other.

4. The transmission tower of claim 1, wherein the composite cross-arm comprises a composite post insulator fixedly attached to the coupling lug by a first connector.

5. The tower of claim 4, wherein the composite post insulator comprises a first flange, the first flange comprises a sleeve and a cross plug board, the sleeve is fixedly connected to one end of the composite post insulator, the cross plug board is fixedly arranged at one end of the sleeve away from the composite post insulator, and the cross plug board is fixedly connected to the connecting lug through the first connecting member.

6. The transmission tower of claim 4, wherein the first connector is a back-to-back set of angle irons.

7. The transmission tower according to claim 1, further comprising a second connector, wherein one end of the second connector is fixedly connected to the tower body and the other end of the second connector is fixedly connected to the connection base plate.

8. The transmission tower according to claim 1, further comprising a bracket extending from the tower body in a direction away from the tower body in a direction in which the conductor extends.

9. The transmission tower according to claim 8, wherein the number of the brackets is two, and the two brackets are respectively disposed on both sides of the tower body.

10. The transmission tower according to claim 9, wherein the composite cross arm comprises at least two cable-stayed insulators, and wherein the two cable-stayed insulators are fixedly connected to the two brackets, respectively.