CN220539365U

CN220539365U - Power transmission tower

Info

Publication number: CN220539365U
Application number: CN202321673757.8U
Authority: CN
Inventors: 王鑫龙; 李超; 王昊; 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: 2023-06-28
Filing date: 2023-06-28
Publication date: 2024-02-27
Anticipated expiration: 2033-06-28

Abstract

The application discloses transmission tower, including tower body, ground wire support, wire jumper cluster, strain insulator cluster and compound cross arm, the ground wire support sets up the top of tower body in, and the vertical one end of keeping away from the tower body of locating the ground wire support of wire jumper cluster is hung to the wire jumper cluster, and strain insulator cluster sets up in the tower body and is located wire jumper cluster below, articulates the wire jumper between strain insulator cluster and the wire jumper cluster, and compound cross arm sets up in the tower body and is located strain insulator cluster below, and strain insulator cluster and compound cross arm are kept away from the tip of tower body all and are used for hanging and establish the power transmission line. According to the three-phase wire jumper string, the upper phase jumper string and the lower phase composite cross arm are used for hanging three-phase wires, the upper phase composite cross arm is omitted, the whole tower structure is simpler, and the installation is simpler and more convenient; the composite cross arm is applied to the strain tower, and the connecting node is simple and novel in structure, attractive, clear in force transmission path, convenient to transport and maintain in subsequent operation, the overall stability of the power transmission tower is improved, and the safety of a power transmission line is improved.

Description

Power transmission tower

Technical Field

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

Background

At present, the composite cross arm tangent tower is gradually applied in batches in the power transmission lines at home and abroad, and good economic and technical effects are obtained, but the strain composite cross arm tower has little application performance in the power transmission lines at home and abroad, and for the power transmission lines, the corner tower and the strain tower occupy important positions in the engineering design of the power transmission lines, and have important significance in the development of EPC total package business of the power transmission lines at home and abroad, so that the strain composite cross arm tower is urgently designed.

Disclosure of Invention

The utility model provides a main aim at provides a transmission tower, comes the articulated three-phase wire through last looks jumper cluster, lower looks compound cross arm, has cancelled the compound cross arm of going up looks, makes strain insulator tower structure simpler, and the installation is simpler and more convenient.

In order to solve the technical problems, the technical scheme adopted by the application is as follows: the utility model provides a transmission tower, including tower body, ground wire support, wire jumper cluster, strain insulator cluster and compound cross arm, the ground wire support sets up the top of tower body in, and the wire jumper cluster is vertical to be hung to be located the one end that the tower body was kept away from to the ground wire support, and strain insulator cluster sets up in the tower body and is located wire jumper cluster below, articulates the wire jumper between strain insulator cluster and the wire jumper cluster, and compound cross arm sets up in the tower body and is located strain insulator cluster below, and strain insulator cluster and compound cross arm are kept away from the tip of tower body all to be used for hanging and establish the power transmission line.

The composite cross arm comprises at least one insulator and an end fitting, the end fitting is connected with the high-voltage end of the insulator to form the end of the composite cross arm, the end fitting comprises a connecting portion, two wire hanging plates and jumper connecting pieces are arranged on the connecting portion, the two wire hanging plates are distributed on two sides of the connecting portion along the extending direction of the first power transmission line, and the first jumper is electrically connected with the first power transmission lines on two sides of the tower body and is hung on the jumper connecting pieces.

The strain insulator string comprises two strain insulators, a first fixing fitting and a second fixing fitting, wherein the two strain insulators are arranged in parallel, one ends of the two strain insulators are fixedly connected with the tower body through the first fixing fitting, and the other ends of the two strain insulators are hung with a second power transmission line through the second fixing fitting.

The two strain insulator strings are symmetrically distributed on two sides of the tower body along the extending direction of the second power transmission line.

The first fixing hardware fitting comprises a first yoke plate, a first adjusting hardware fitting and a second adjusting hardware fitting, wherein one end of the first yoke plate, which is close to the tower body, is connected to the tower body through the first adjusting hardware fitting, and the other end of the first yoke plate is fixedly connected with the tension insulator through the second adjusting hardware fitting.

The second fixing hardware fitting comprises a second connecting plate and a third adjusting hardware fitting, one end, close to the tower body, of the second connecting plate is directly fixedly connected with the tension insulator, and the other end of the second connecting plate is connected with a second power transmission line through the third adjusting hardware fitting in an adjustable position.

The third adjusting hardware fitting comprises a DB type adjusting plate and a U type hardware fitting, wherein the DB type adjusting plate is provided with a plurality of installation parts which are arranged in an arc shape, and the U type hardware fitting is alternatively connected with one installation part.

Wherein, the outside at body top is equipped with fixed part, and the one end of ground wire support passes through fixed part fixed connection in the body of the tower, and the jumper wire cluster is connected to the other end.

The jumper wire string comprises two jumper wire string insulators, a third fixed hardware fitting and a wire hanging hardware fitting, wherein the two jumper wire insulators are arranged in parallel, one ends of the two jumper wire insulators are fixedly connected with the ground wire support through the third fixed hardware fitting, and the other ends of the two jumper wire insulators are hung with a second jumper wire through the wire hanging hardware fitting.

The second jumper wire is electrically connected with second power transmission lines positioned on two sides of the tower body.

According to the tension tower, the three-phase lead is hung through the upper phase jumper wire string and the lower phase composite cross arm, the upper phase composite cross arm is omitted, and the tension tower is simpler in structure and simpler and more convenient to install. Meanwhile, the high-voltage end of the composite cross arm is connected with the power transmission line through the end fitting in a hanging mode, and the end fitting can be set to be a single hanging point (a first mounting hole is formed in the tension fitting) or a double hanging point (two first mounting holes are formed in the tension fitting), so that the following technical effects can be achieved: 1) The normal design and three-span design consideration are ensured, the stress uniformity of the composite cross arm is ensured, the mounting difficulty of the composite cross arm is reduced, and the mounting time and cost are saved; 2) The machining precision of the composite cross arm is reduced; 3) The conductor layer spacing is reduced, the corridor width is shortened, the tower head size is reduced, and the electric field distribution and the electromagnetic environment of the strain tower are improved; 4) The wire load effect and tower head wind load are reduced, and the tower weight and the foundation acting force are reduced; 5) The problem that the traditional tension tower is applied to areas with limited corridor and high land requirements is solved; 6) The investment and operation maintenance cost of the power transmission line body and the whole life cycle are reduced, and the operation maintenance free of the whole life cycle is realized.

Drawings

For a clearer description of the technical solutions in the present application, the drawings required in the description of the embodiments will be briefly described below, it being obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a schematic structural diagram of an embodiment of a power transmission tower of the present application;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

fig. 3 is a schematic structural diagram of an end fitting according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of connection between an end fitting and an insulator according to another embodiment of the present application;

fig. 5 is a schematic structural view of an end fitting according to another embodiment of the present application;

FIG. 6 is an enlarged schematic view at B in FIG. 1;

FIG. 7 is an enlarged schematic view at C in FIG. 1;

fig. 8 is an enlarged schematic view at D in fig. 1.

Detailed Description

The following description of the embodiments of the present application, taken in conjunction with the accompanying drawings, will clearly and fully describe the embodiments of the present application, and it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Referring to fig. 1, the application provides a transmission tower 10, this transmission tower 10 includes body 11, ground wire support 210, jumper wire cluster 220, strain insulator cluster 230 and compound cross arm 100, ground wire support 210 sets up in the top of body 11, the vertical one end of keeping away from body 11 that locates ground wire support 210 in jumper wire cluster 220, strain insulator cluster 230 sets up in body 11 and is located jumper wire cluster 220 below, the jumper wire articulates between strain insulator cluster 230 and jumper wire cluster 220, compound cross arm 100 sets up in strain insulator cluster 230 below, strain insulator cluster 230 and compound cross arm 100 are all used for hanging the power transmission line from the tip of body 11. Namely, the ground wire bracket 210, the jumper wire string 220, the tension insulator string 230 and the composite cross arm 100 are sequentially arranged in the top-down direction of the tower body 11.

The composite cross arm 100 comprises at least one insulator 110 and an end fitting 120, wherein the low-voltage end 110a of the at least one insulator 110 is connected with the tower body 11, and the high-voltage end 110b of the at least one insulator 110 is connected together through the end fitting 120 to form an end 100a of the composite cross arm 100 for hanging a power transmission line, so that the stability of connecting all insulators 110 together can be ensured, and the stability and firmness of the composite cross arm 100 are further ensured.

Specifically, the composite cross arm 100 may be provided on one side of the tower body 11, or the composite cross arm 100 may be provided on both sides of the tower body 11 symmetrical to each other (as shown in fig. 1). The number of the insulators 110 may be one or plural, and is not limited herein. The insulators 110 have a low voltage end 110a and a high voltage end 110b, the low voltage end 110a being connected to the tower 11, and the high voltage end 110b of at least one insulator 110 being connected together to form an end 100a of the composite cross arm 100 for hanging a power line. When the number of the insulators 110 is one, the high voltage ends 110b of the insulators 110 form the end portions 100a of the composite cross arm 100, and when the number of the insulators 110 is plural, the high voltage ends 110b of the insulators 110 are connected together to form the end portions 100a of the composite cross arm 100. Meanwhile, in the present embodiment, a power line on which the end 100a of the composite cross arm 100 is hung is defined as a first power line 101.

With continued reference to fig. 1-3, the power transmission tower 10 is a tension tower 10, the tower body 11 is a power transmission pole 11, the power transmission pole 11 is a steel pipe pole, the first power transmission lines 101 are disconnected at two sides of the power transmission pole 11 along the extending direction of the first power transmission lines 101, the first power transmission lines 101 at two sides of the power transmission pole 11 are respectively and fixedly connected to the power transmission pole 11 through end fittings 120, and the first power transmission lines 101 at two sides of the power transmission pole 11 are electrically connected through first jumper wires 102 (lead wires).

The end fitting 120 includes a connection portion 121, which is configured to be connected to the high voltage end 110b of the at least one insulator 110, where two wire hanging boards 122 and a jumper connecting piece 123 are disposed on the connection portion 121, the two wire hanging boards 122 are distributed on two sides of the connection portion 121 along the extending direction of the first power transmission line 101, and the first jumper 102 is electrically connected to the first power transmission line 101 located on two sides of the power transmission rod 11 and is hung on the jumper connecting piece 123. The connection part 121 has a cylindrical structure, and the hanger plate 122 and the jumper connector 123 are connected to the outer circumference of the connection part 121.

The hanging board 122 is used for connecting the first power line 101, and the jumper connector 123 is used for connecting the first jumper 102. Wherein two wire hanging plates 122 are provided on both sides of the connection part 121 along the extending direction of the first power transmission line 101 in order to facilitate the hanging of the first power transmission line 101 on both sides of the power transmission line 11. Specifically, in the extending direction along the first power transmission line 101, the first power transmission line 101 on one side of the power transmission rod 11 is tensioned by a strain clamp, the strain clamp is connected to one wire hanging plate 122 of the end fitting 120 by a strain fitting 130, and simultaneously, the first power transmission line 101 on the other side of the power transmission rod 11 is also tensioned by another strain clamp, and the other strain clamp is connected to the other wire hanging plate 122 of the end fitting 120 by another strain fitting 130. That is, along the extending direction of the first power transmission line 101, the first power transmission line 101 located at two sides of the power transmission pole 11 is respectively hung on two wire hanging plates 122 at two sides of the connecting portion 121 through two strain gauges 130. First jumper wires 102 (lead wires) are electrically connected between strain clamps on both sides of the transmission pole 11 to realize power transmission. Of course, in other embodiments, the two hanging wire plates may not be located at two sides of the connection portion along the extending direction of the power transmission wire, so long as the two hanging wire plates can be guaranteed to be connected with the power transmission wires at two sides of the power transmission wire.

The first power transmission line 101 on two sides of the power transmission pole 11 is further electrically connected by the first jumper 102, and in order to install the first jumper 102, a jumper connector 123 is further arranged on the connecting portion 121, the jumper connector 123 is located at the bottom of the connecting portion 121, the jumper connector 123 is located between two wire hanging plates 122, the wire hanging hardware string 140 is hung on the jumper connector 123, and then the first jumper 102 is hung through the wire hanging hardware string 140. It can be understood that the wire hanging plate 122 and the jumper wire connecting piece 123 are both connected with the connecting portion 121, so that the end fitting 120 is compact in structure and high in connection strength.

The jumper connector 123 may have the same structure as the hanger plate 122, for example, may be provided in a plate-like structure.

With continued reference to fig. 2, in order to implement connection between the tension fitting 130 and the wire hanging plate 122, a first mounting hole may be further provided on the wire hanging plate 122, and the tension fitting 130 is mounted with the wire hanging plate 122 through the first mounting hole.

In fig. 2, the wire hanging plate 122 is provided with a first mounting hole, a connection point exists between the tension fitting 130 and the wire hanging plate 122, and at this time, the tension fitting 130 includes a first tension-resistant connection plate 131, a second tension-resistant connection plate 132, and a first tension-resistant connection piece 133. The first tension-resistant connecting plates 131, the interval setting of second tension-resistant connecting plates 132, the one end and the first tension-resistant connecting plates 131 of first tension-resistant connecting piece 133 are connected, and the other end is connected with second tension-resistant connecting plates 132, in order to guarantee the joint strength between first tension-resistant connecting plates 131, the second tension-resistant connecting plates 132, and the quantity of first tension-resistant connecting pieces 133 is two, and the one end of two first tension-resistant connecting pieces 133 is all connected with first tension-resistant connecting plates 131, and the other end is all connected with second tension-resistant connecting plates 132. Meanwhile, the first tension-resistant connecting plate 131 is connected with the hanging wire plate 122 through a first mounting hole, and the second tension-resistant connecting plate 132 is connected with a tension-resistant wire clamp.

With continued reference to fig. 3, the end fitting 120 further includes a first connection plate 124 and a second connection plate 125, where the first connection plate 124 and the second connection plate 125 are respectively located at two end surfaces of the connection portion 121, the first connection plate 124 covers one end of the end fitting 120 far away from the insulator 110 to prevent water vapor, impurities and the like from immersing into the insulator 110, and the second connection plate 125 extends outwards from the other end of the connection portion 121 along the radial direction of the connection portion 121 to form a full-surrounding structure, and the hanging wire plate 122 and the jumper wire connection member 123 are located between the first connection plate 124 and the second connection plate 125.

Meanwhile, the first connection plate 124 and the second connection plate 125 are provided with construction holes 126 in the circumferential direction for hoisting the composite cross arm 100 and for tightening and hanging the transmission line.

In order to ensure that the strain insulator-metal 130 is stressed uniformly, the strain insulator-metal 130 has a symmetrical structure. In an application scenario, as shown in fig. 2, the first tension-resistant connecting plate 131 and the second tension-resistant connecting plate 132 have the same structure, and the two first tension-resistant connecting pieces 133 are disposed in parallel.

In another embodiment, referring to fig. 4 and 5, the hanging wire plate 122 is provided with two first mounting holes, the tension-resistant hardware fitting 130 is connected with the hanging wire plate 122 through the two first mounting holes, at this time, the connection strength between the tension-resistant hardware fitting 130 and the hanging wire plate 122 can be ensured by the arrangement of the two first mounting holes, and the transmission tower can be ensured to span railway, expressway, canal and other large-span overhead lines. The strain clamp 130 includes a third strain insulator-connecting plate 134, a fourth strain insulator-connecting plate 135, and a second strain insulator-connecting member 136.

The third tension mask 134 is connected to a tension clamp. The number of the fourth tension-resistant connecting plates 135 is two, the number of the second tension-resistant connecting pieces 136 is two, the two fourth tension-resistant connecting plates 135 are in one-to-one correspondence with the two second tension-resistant connecting pieces 136, and the two fourth tension-resistant connecting plates 135 are connected with the third tension-resistant connecting plates 134 through the corresponding second tension-resistant connecting pieces 136. And two fourth tension-resistant connecting plates 135 are in one-to-one correspondence with two first mounting holes, and the two fourth tension-resistant connecting plates 135 are connected with the wire hanging plate 122 through the corresponding first mounting holes.

With continued reference to fig. 5, the end fitting 120 further includes a first connection plate 124 and a second connection plate 125, where the first connection plate 124 and the second connection plate 125 are respectively located at two end surfaces of the connection portion 121, the first connection plate 124 covers one end of the end fitting 120 far away from the insulator 110 to prevent water vapor, impurities and the like from immersing into the insulator 110, and the second connection plate 125 extends outwards from the other end of the connection portion 121 along the radial direction of the connection portion 121 to form a full-surrounding structure, and the hanging wire plate 122 and the jumper wire connection member 123 are located between the first connection plate 124 and the second connection plate 125.

Still be equipped with reinforcing plate 127 between link plate 122 and the connecting portion 121, the face of link plate 122 and the outer peripheral face of connecting portion 121 are connected simultaneously to reinforcing plate 127, and all are equipped with reinforcing plate 127 on the two faces of link plate 122, make the structure of tip gold utensil 120 more stable.

Similarly, in order to ensure that the strain insulator-metal 130 is stressed uniformly, the strain insulator-metal 130 is also in a symmetrical structure, and the symmetry axis of the strain insulator-metal 130 coincides with the symmetry axis of the third strain insulator-connecting plate 134.

Of course, in other embodiments, the number of the first mounting holes provided on the hanger plate 122 may be three, four or more, which is not limited herein.

Also, in order to achieve connection of the jumper connector 123 with the wire hanging hardware string 140, the jumper connector 123 is further provided with second mounting holes for connecting the wire hanging hardware string 140, and the number of the second mounting holes provided to the jumper connector 123 may be one, two or more, similar to the first mounting holes, without limitation.

The connecting portion 121, the wire hanging plate 122 and the jumper wire connecting piece 123 may be integrally formed, or may be connected together by welding or the like.

With continued reference to fig. 1, in an embodiment, at least one of the insulators 110 includes a post insulator 111 and a cable-stayed insulator 112, the high voltage end 110b of the post insulator 111 and the high voltage end 110b of the cable-stayed insulator 112 are connected together, the low voltage end 110a of the post insulator 111 and the low voltage end 110a of the cable-stayed insulator 112 are respectively connected with two different positions of the power transmission pole 11, and the low voltage end 110a of the post insulator 111 and the low voltage end 110a of the cable-stayed insulator 112 are located on the same vertical line, at this time, the composite cross arm 100 has a stable triangle structure, so as to ensure the stability of the composite cross arm 100. Wherein the cable-stayed insulator 112 is located above the pillar insulator 111.

The outer peripheral surface of the connecting portion 121 is further provided with a connecting lug for connecting the cable-stayed insulator 112. The connecting lugs are located on top of the connecting portion 121 and between the two hanger plates 122. The connecting lugs are provided with connecting holes to be connected with the cable-stayed insulators 112, so that the high voltage ends 110b of the post insulators 111 and the high voltage ends 110b of the cable-stayed insulators 112 are connected together through the end fittings 120 to form the end 100a of the composite cross arm 100 for hanging the transmission line.

In other embodiments, the number of the post insulators and the cable-stayed insulators may be plural, and the number of the post insulators and the cable-stayed insulators is not limited in the present application. The structure of the end fitting is correspondingly matched and designed.

For example, the number of the pillar insulators is two, the number of the cable-stayed insulators is one, the cable-stayed insulators are located on the same side of the two pillar insulators, the two pillar insulators and the cable-stayed insulators are arranged to enable a stable triangular structure to be formed between the composite cross arm and the tower body of the power transmission tower, the stability of the composite cross arm can be greatly improved, at the moment, the mounting heights of the two pillar insulators are the same, the two pillar insulators are arranged in a V-shaped mode, and the cable-stayed insulators are located above the two pillar insulators.

For another example, the number of the post insulators and the cable-stayed insulators is two, and the two cable-stayed insulators are positioned on the same side of the two post insulators and are respectively adjacent to the two post insulators. The setting of two pillar insulators and two to one side insulators makes between the body of a tower of compound cross arm and transmission tower be stable triangle structure, can greatly improve the stability of compound cross arm, and the installation height of two pillar insulators is the same this moment, and two to one side insulators's installation height is the same, and two to one side insulators all are located the top of two pillar insulators simultaneously.

With continued reference to fig. 1, in an embodiment, the tower body 11 of the power transmission tower 10 is a power transmission pole 11, the power transmission pole 11 may be a steel pipe pole made of a steel pipe, or may be a composite power transmission pole made of a composite material, two composite cross arms 100 are disposed on the power transmission pole 11 at the same height, the two composite cross arms 100 are axisymmetrically distributed relative to the axis of the power transmission pole 11, the axes of the two composite cross arms 100 are located on the same straight line, and two first power transmission lines 101 are respectively hung at the ends of the two composite cross arms 100 away from the power transmission pole 11.

Of course, in other embodiments, the tower body of the power transmission tower may be a lattice tower, which is not limited herein.

Referring to fig. 1, 6 and 7, the strain insulator string 230 includes two strain insulators 231, a first fixing fitting 232 and a second fixing fitting 233, the two strain insulators 231 are arranged in parallel, one end of each strain insulator 231 is fixedly connected with the power transmission pole 11 through the first fixing fitting 232, and the other end of each strain insulator 231 is hung on the power transmission pole through the second fixing fitting 233. In the present embodiment, the power line on which the strain insulator string 230 is hung is defined as the second power line 103.

The two tension insulator strings 230 are symmetrically distributed on two sides of the power transmission pole 11 along the extending direction of the second power transmission line 103, the second power transmission line 103 is disconnected on two sides of the power transmission pole 11 along the extending direction of the second power transmission line 103, the second power transmission lines 103 on two sides of the power transmission pole 11 are respectively hung on the end portions, far away from the power transmission pole 11, of the tension insulators 231 through second fixing hardware fittings 233, and the second power transmission lines 103 on two sides of the power transmission pole 11 are electrically connected through second jumper wires 104 (lead wires).

Referring to fig. 6, the first fixing fitting 232 includes a first link plate 2321, a first adjusting fitting 2322, and a second adjusting fitting 2323. One end of the first link 2321, which is close to the power transmission rod 11, is connected to the power transmission rod 11 through a first adjusting hardware 2322, and the other end of the first link 2321 is fixedly connected with the two tension insulators 231 through a second adjusting hardware 2323.

The first yoke plate 2321 is a triangular yoke plate, three vertex angles of the first yoke plate 2321 are respectively provided with three third mounting holes, the third mounting hole at one vertex angle is connected with the first adjusting fitting 2322, the third mounting holes at the other two vertex angles are respectively connected with the second adjusting fitting 2323, and the second adjusting fitting 2323 is connected with the tension insulator 231. In this embodiment, the first yoke plate 2321 is an isosceles triangle, and in other embodiments, the first yoke plate may also be any triangle plate, which is not described in detail.

The first adjusting hardware 2322 includes a plurality of U-shaped hardware and annular hardware, in this embodiment, the U-shaped hardware is set to two, the annular hardware is set to one, and two U-shaped hardware sleeves are set at two ends of the annular hardware. In other embodiments, the number of U-shaped hardware tools and the number of annular hardware tools may be set according to actual use conditions, and one end of the first yoke plate 2321 may be fixedly connected with the power transmission rod 11 in an adjustable position.

The second adjusting hardware 2323 comprises two Z-shaped hanging plates, one ends of the two Z-shaped hanging plates are respectively connected with the third mounting holes at two vertex angles of the first yoke plate 2321, and the other ends of the two Z-shaped hanging plates are respectively fixedly connected with the two tension insulators 231. Preferably, according to actual use conditions, Z-type hanging plates with different lengths can be selected to adjust the distance between the tension insulator 231 and the power transmission rod 11.

In other embodiments, the second adjusting hardware may be omitted, and the tension insulator may be directly fixed to the first yoke plate by a fastener or other manners, which is not limited herein according to actual use situations.

Referring to fig. 7, the second fixing fitting 233 includes a second link 2331 and a third adjusting fitting 2332, one end of the second link 2331, which is close to the transmission pole 11, is directly fixedly connected with the tension insulator 231, and the other end is adjustably connected with the second transmission line 103 through the third adjusting fitting 2332.

The second link plate 2331 is a triangular link plate, three top corners of the second link plate 2331 are respectively provided with three fourth mounting holes, wherein two fourth mounting holes at two top corners are respectively connected with two tension insulators 231, and a fourth mounting hole at the other top corner is connected with a third adjusting fitting 2332, and the second power transmission line 103 is hung through the third adjusting fitting 2332. In this embodiment, the second link plate 2331 is an isosceles triangle, and in other embodiments, the second link plate may be any triangle plate, which is not described in detail.

The third adjusting hardware fitting 2332 comprises a Z-shaped hanging plate, a DB-shaped adjusting plate 2333, a U-shaped hardware fitting and an annular hardware fitting which are sequentially connected, wherein one end of the Z-shaped hanging plate is connected with a fourth mounting hole at one vertex angle of the second connecting plate 2331, the other end of the Z-shaped hanging plate is connected with the DB-shaped adjusting plate 2333, the DB-shaped adjusting plate 2333 is integrally fan-shaped, a plurality of mounting portions 2334 which are in arc arrangement are arranged, the U-shaped hardware fitting is alternatively connected with one mounting portion 2334, and the third adjusting hardware fitting 2332 is connected with the second power transmission line 103 in an adjustable position mode.

The present application further uses the second jumper 104 to electrically connect the second power lines 103 on both sides of the power transmission pole 11, and in order to install the second jumper 104, a jumper string 220 is provided on the top end of the power transmission pole 11 to support the second jumper 104.

Specifically, two ground wire brackets 210 are provided at the top end of the power transmission rod 11, the ground wire brackets 210 are wedge-shaped, and the two ground wire brackets 210 are symmetrically provided at both sides of the power transmission rod 11. The outside at power transmission pole 11 top is equipped with fixed part 240, and ground wire support 210 one end passes through fixed part 240 fixed connection in power transmission pole 11, and the jumper wire cluster 220 is connected to the other end. The fixing portion 240 includes a connection plate 241 and a plurality of reinforcing plates 242, one side of the connection plate 241 is connected with the outer circumferential surface of the power transmission rod 11, and the plurality of reinforcing plates 242 are connected between the connection plate 241 and the power transmission rod 11, so that the structure of the fixing portion 240 is more stable.

Referring to fig. 8, the jumper string 220 includes two jumper string insulators 221, a third fixing fitting 222 and a wire hanging fitting 223, the two jumper insulators 221 are arranged in parallel, one end of each jumper insulator 221 is fixedly connected with the ground wire bracket 210 through the third fixing fitting 222, the other end of each jumper insulator 221 is hung with the second jumper 104 through the wire hanging fitting 223, and the second jumper 104 is electrically connected with the second power transmission line 103 located at two sides of the power transmission rod 11.

The third fixing fitting 222 is similar in structure to the first fixing fitting 232 except that the first adjusting fitting of the third fixing fitting 222 is connected to the ground bracket 210 and the second adjusting fitting of the third fixing fitting 222 is connected to the jumper string insulator 221.

The wire hanging fitting 223 includes a fourth adjusting fitting and a wire hanging clamp, wherein one end of the fourth adjusting fitting is connected with an end of the jumper string insulator 221, which is far away from the ground wire bracket 210, and the other end of the fourth adjusting fitting is connected with the wire hanging clamp so as to hang and support the second jumper 104. Preferably, according to actual use situations, fourth adjusting hardware with different lengths can be selected to adjust the hanging height of the second jumper 104.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.

Claims

1. The utility model provides a transmission tower, its characterized in that includes body of the tower, ground wire support, wire jumper cluster, strain insulator cluster and compound cross arm, the ground wire support set up in the top of body of the tower, the wire jumper cluster is vertical to be hung and to be located the one end that the body of the tower was kept away from to the ground wire support, the strain insulator cluster set up in the body of the tower just is located wire jumper below, the strain insulator cluster with connect the wire jumper between the wire jumper cluster, compound cross arm set up in the body of the tower just is located strain insulator cluster below, strain insulator cluster with compound cross arm is kept away from the tip of body of the tower all is used for hanging and establishes the power transmission line.

2. The power transmission tower according to claim 1, wherein the composite cross arm comprises at least one insulator and an end fitting, the end fitting is connected with a high voltage end of the insulator to form an end of the composite cross arm for hanging a first power transmission line, the end fitting comprises a connecting portion, two wire hanging plates and a jumper connecting piece are arranged on the connecting portion, the two wire hanging plates are distributed on two sides of the connecting portion along the extending direction of the first power transmission line, and a first jumper is electrically connected with the first power transmission lines on two sides of the tower body and is hung on the jumper connecting piece.

3. The power transmission tower according to claim 1, wherein the strain insulator string comprises two strain insulators, a first fixing fitting and a second fixing fitting, the two strain insulators are arranged in parallel, one ends of the two strain insulators are fixedly connected with the tower body through the first fixing fitting, and the other ends of the two strain insulators are hung on a second power transmission line through the second fixing fitting.

4. A transmission tower according to claim 3, wherein two strain insulator strings are provided, and the two strain insulator strings are symmetrically distributed on both sides of the tower body along the extending direction of the second transmission line.

5. The power transmission tower according to claim 3, wherein the first fixing fitting comprises a first yoke plate, a first adjusting fitting and a second adjusting fitting, one end of the first yoke plate, which is close to the tower body, is connected to the tower body through the first adjusting fitting, and the other end of the first yoke plate is fixedly connected with the tension insulator through the second adjusting fitting.

6. The power transmission tower according to claim 3, wherein the second fixing fitting comprises a second link plate and a third adjusting fitting, one end of the second link plate, which is close to the tower body, is directly and fixedly connected with the tension insulator, and the other end of the second link plate is adjustably connected with the second power transmission line through the third adjusting fitting.

7. The power transmission tower according to claim 6, wherein the third adjusting fitting includes a DB-type adjusting plate provided with a plurality of mounting portions arranged in an arc shape, and a U-type fitting selectively connected to one of the mounting portions.

8. The power transmission tower according to claim 1, wherein a fixing portion is arranged on the outer side of the top of the tower body, one end of the ground wire support is fixedly connected to the tower body through the fixing portion, and the other end of the ground wire support is connected with the jumper wire string.

9. The power transmission tower according to claim 3, wherein the jumper string comprises two jumper string insulators, a third fixing fitting and a wire hanging fitting, the two jumper insulators are arranged in parallel, one ends of the two jumper insulators are fixedly connected with the ground wire support through the third fixing fitting, and the other ends of the two jumper insulators are hung with a second jumper through the wire hanging fitting.

10. The power transmission tower of claim 9, wherein the second jumper electrically connects the second power lines on both sides of the tower body.