Novel self-standing low-drilling high-span pole tower

Abstract

The utility model relates to a novel self-standing low-drilling high-span pole tower which comprises two main poles which are vertically arranged in parallel, two ground wire cross arms are arranged at the tops of the two main poles in a horizontal extending mode in opposite directions, and ground wire hanging points are arranged at the free ends of the ground wire cross arms respectively. An upper wire cross arm and a lower wire cross arm are sequentially arranged below the ground wire cross arm at intervals, the wire cross arms and the main rod are perpendicularly intersected, lower ground wire hanging points are arranged at the positions, between the upper wire cross arm and the lower wire cross arm, of the two sections of the main rod respectively, and upper wire hanging points are arranged at the free end and the middle position of the upper wire cross arm. The free end and the middle of the lower wire cross arm are provided with lower wire hanging points. According to the utility model, the lifting (or lowering) transformation of the existing commissioning line is avoided, the disturbance influence on the existing power grid is reduced, and the device has the characteristics of flexible arrangement, convenient construction, stable structure, safety and reliability, and good economical efficiency and practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of overhead transmission pole towers, and in particular relates to a novel self-supporting low-drilling high-span pole tower. Background Art

[0002] When high-voltage transmission lines cross, obstacles can generally be crossed by overhead lines and underground cables. The overhead line crossing method is to erect high towers to lift the conductors and ensure that there is a sufficient safe distance between the conductors and the objects being crossed. When it is necessary to drill under the built high-voltage transmission lines, low poles and towers are erected to drill through while ensuring that the conductors are at a sufficient safe distance to the ground and the lines being drilled. The underground pipeline method uses cables to enter the ground and avoid obstacles through underground pipelines.

[0003] Overhead line crossing technology is mature and reliable, with convenient construction, short construction period and low overall cost, and is widely used in the wild, suburban and other environments. Underground cable pipeline technology is relatively complex, with a long construction period and high overall cost, but it is not easily affected by the environment and can avoid aerial obstacles. In dense transmission channels and important cross-overs, overhead lines are replaced with underground cable lines to ensure the safety and overall stability of the power grid. It is often used in densely populated or terrain-restricted areas in cities.

[0004] Under normal circumstances, when not restricted by external conditions such as terrain conditions, high-voltage transmission lines usually cross (drill) overhead lines, which are easy to construct and have low costs. According to relevant regulations, when the proposed line crosses the operational line, the principle of high-voltage level lines on top is followed, and drilling is preferred when the voltages are equal. However, in some special cases, the proposed transmission line needs to drill through obstacles (such as existing overhead lines) first, and then cross existing low-voltage transmission lines, roads and other obstacles. The height of the conductor hanging points on both sides of the conventional pole tower is the same, which cannot meet the requirements of drilling through the line on one side of the pole tower and crossing on the other side. Multiple pole towers need to be built to pass through complex terrain and crossing conditions.

[0005] Therefore, the existing technology has the disadvantages of being difficult to arrange, difficult to construct, increasing the land occupation area, wasting resources and poor economy. Utility Model Content

[0006] In order to solve the technical problems existing in the prior art, the utility model provides a new type of self-supporting low-drilling high-span tower

[0007] The technical solution of the utility model is to provide a novel self-supporting low-drilling high-span pole tower, comprising two main poles arranged vertically and in parallel, two ground wire cross arms are horizontally extended in opposite directions at the tops of the two main poles, upper ground wire hanging points are respectively arranged at the free ends of the ground wire cross arms, upper conductor cross arms and lower conductor cross arms are sequentially arranged at intervals below the ground wire cross arms, the conductor cross arms are arranged to intersect the main poles vertically, lower ground wire hanging points are respectively arranged at the positions of two sections of the main poles between the upper conductor cross arms and the lower conductor cross arms, upper conductor hanging points are arranged at the free ends and the middle positions of the upper conductor cross arms, and lower conductor hanging points are arranged at the free ends and the middle positions of the lower conductor cross arms.

[0008] Furthermore, an upper wire hanging plate and an upper wire jumper hanging plate are respectively arranged on the top surface and the bottom surface of the upper wire hanging point.

[0009] Furthermore, a lower conductor jumper hanging plate and a lower conductor hanging plate are respectively arranged on the top surface and the bottom surface of the lower conductor hanging point.

[0010] Furthermore, it also includes an upper conductor, a transition conductor and a lower conductor connected in sequence in the same vertical plane, the upper conductor is connected from the first adjacent pole tower to the upper conductor hanging plate, the transition conductor is connected from the upper conductor jumper hanging plate to the lower conductor jumper hanging plate, and the lower conductor is connected from the lower conductor hanging plate to the second adjacent pole tower.

[0011] Furthermore, it also includes an insulator string, which is sleeved on the outside of the conductor at the hanging plate position.

[0012] Furthermore, it also includes a jumper, one end of which is connected to the transition conductor, and the other end of which is connected to the upper conductor or the lower conductor on the same vertical plane.

[0013] Furthermore, the fixed end of the cross arm is connected to the main rod through a flange.

[0014] Furthermore, the main rod is a multi-section connection structure, and the rod members of the multi-section main rod are connected by flanges.

[0015] Furthermore, the bottom of the main rod is connected to the ground through a root bolt.

[0016] Furthermore, the main pole is configured as a steel pipe pole tower type.

[0017] Compared with the prior art, the utility model provides a new type of self-supporting low-drilling high-span pole tower, which has the following beneficial effects: by erecting the pole tower, the overhead transmission line of the adjacent pole tower is hung on the upper conductor cross arm or the lower conductor cross arm of the pole tower, and then the conductor hung on the other conductor cross arm is connected through the upper and lower insulator strings and jumpers on the pole tower, and the conductor hanging point and the conductor sag height change on this side are used to realize the complex cross-spanning of drilling through one side of a pole tower and crossing obstacles on the other side. Therefore, the utility model has the characteristics of simple and reliable structure, convenient processing, production and installation, reduced land occupation, and significantly shortened construction period. At the same time, it avoids the height adjustment and transformation of the existing operational lines, greatly reduces the coordination and management work with related parties, reduces the disturbance impact on the existing power grid, and avoids the use of high-cost underground cables, which has high economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A front view of the main rod of the embodiment of the utility model

[0019] Figure 2 This is a schematic diagram of the installation of the wires in the embodiment of the utility model.

[0020] Figure 3 The structure diagram of the upper conductor cross arm and the hanging point of the embodiment of the utility model

[0021] Figure 4 The structure diagram of the lower conductor cross arm and the hanging point of the embodiment of the utility model

[0022] Figure 5 This is a flange connection structure diagram of an embodiment of the utility model DETAILED DESCRIPTION

[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] Provide a new type of self-supporting low-drilling high-span tower, such as Figure 1As shown, it includes two main poles 1 arranged vertically and in parallel, two ground wire cross arms 2 are arranged horizontally and extended in opposite directions on the top of the two main poles 1, upper ground wire hanging points B1 are arranged at the free ends of the ground wire cross arms 2, which are used to connect the high ground wire, upper conductor cross arms 3 and lower conductor cross arms 4 are arranged in sequence below the ground wire cross arms 2, the upper conductor cross arm 3 is located above the lower conductor cross arm 4, the upper conductor cross arm 3 and the lower conductor cross arm 4 are arranged to intersect with the main pole 1 vertically, the length of the upper conductor cross arm and the lower conductor cross arm meet the electrical spacing requirements of the conductor to the pole body, lower ground wire hanging points B2 are arranged at the positions of the two sections of the main pole 1 between the upper conductor cross arm 3 and the lower conductor cross arm 4, which are used to connect the low ground wire, upper conductor hanging points A1 are arranged at the free end and the middle position of the upper conductor cross arm 3, lower conductor hanging points A2 are arranged at the free end and the middle of the lower conductor cross arm 4, the conductors are connected through the hanging points, the upper conductor cross arm 3 and the lower conductor cross arm 4 are connected to the upper conductor and the lower conductor respectively, and are connected through the transition conductor in the middle. Specifically, as Figure 2 As shown, after the transmission line drills a higher voltage level line, it is hung on the hanging plate 8 of the lower conductor cross arm 4 of the low-drilling high-span tower through the horizontal insulator string 10 and the hardware; because the other side of the tower crosses obstacles such as low voltage level lines and grade roads, the conductor needs to be lifted and hung on the hanging plate 6 of the upper conductor cross arm 3 through the horizontal insulator string 10 and the hardware; the upper conductor 14 and the lower conductor 15 are connected and connected through the jumper 12 and the transition conductor 13 connected to the vertical insulator string 11 pulled up and down. The ground wire (lightning wire) on the crossing side is hung at the ground wire hanging point B1, and the ground wire on the drilling side is hung at the ground wire hanging point B2. By setting the upper conductor cross arm 3 and the lower conductor cross arm 4 on this type of tower, the height of the conductor is changed in the vertical direction on the tower body to realize the function of drilling through the overhead line on one side of the tower and crossing obstacles such as low voltage level overhead lines and grade roads on the other side.

[0025] like Figure 3 and Figure 4 As shown, the top surface and bottom surface of the upper wire hanging point A1 are respectively provided with an upper wire hanging plate 6 and an upper wire jumper hanging plate 7, and the top surface and bottom surface of the lower wire hanging point A2 are respectively provided with a lower wire jumper hanging plate 9 and a lower wire hanging plate 8, the upper wire hanging plate 6 and the lower wire hanging plate 8 are horizontally arranged so as to stably connect the lateral upper wire 14 and the lower wire 15, and the upper wire jumper hanging plate 7 and the lower wire jumper hanging plate 9 are vertically arranged so as to stably connect one end of the vertical transition wire 13 respectively.

[0026] Preferably, the upper conductor 14, the transition conductor 13 and the lower conductor 15 are connected in sequence in the same vertical plane, the upper conductor 14 is connected from the first adjacent pole tower to the upper conductor hanging plate 6, the transition conductor 13 is connected from the upper conductor jumper hanging plate 7 to the lower conductor jumper hanging plate 9, and the lower conductor 15 is connected from the lower conductor hanging plate 8 to the second adjacent pole tower, and insulator strings 10 and 11 are sleeved on the outer side of the conductor at the hanging plate position, and the conductor is insulated from the pole tower and the ground by the insulation characteristics of the insulator strings.

[0027] like Figure 2 As shown, a jumper 12 is set between the upper conductor 14 and the transition conductor 13 in the same vertical plane, and a jumper 12 is set between the transition conductor 13 and the lower conductor 15 in the same vertical plane. The jumper 12 realizes a stable connection between the upper conductor and the lower conductor through corresponding hardware.

[0028] like Figure 5 As shown, the fixed end of the cross arm is connected to the main pole 1 through a flange connection C. The main pole 1 is set as a multi-section connection structure. The multi-section main pole 1 members are connected through flanges C. The flange is easy to produce and process, has high bonding strength, reliable connection and is easy to install. The bottom of the main pole 1 is connected to the ground through a root bolt 5, so that the main pole 1 is stably fixed to the ground.

[0029] Preferably, the main pole 1 is configured as a steel tube pole tower type. The steel tube pole has flexible layout and simple structure, and is easy to realize complex structural types. The steel tube pole is easy to purchase, easy to process and produce, can be quickly installed with the help of a crane, and is convenient for later operation and maintenance.

Claims

1. A new type of self-supporting low-drilling high-span tower, comprising two main poles arranged vertically and parallel, characterized in that: Two ground wire cross arms are horizontally extended in opposite directions at the tops of the two main poles, upper ground wire hanging points are respectively arranged at the free ends of the ground wire cross arms, upper conductor cross arms and lower conductor cross arms are sequentially arranged at intervals below the ground wire cross arms, the conductor cross arms are arranged to intersect the main poles vertically, lower ground wire hanging points are respectively arranged at the positions of the two sections of the main poles between the upper conductor cross arms and the lower conductor cross arms, upper conductor hanging points are arranged at the free ends and the middle positions of the upper conductor cross arms, and lower conductor hanging points are arranged at the free ends and the middle positions of the lower conductor cross arms.

2. A novel self-supporting low-drilling high-span tower as claimed in claim 1, characterized in that: An upper wire hanging plate and an upper wire jumper hanging plate are respectively arranged on the top surface and the bottom surface of the upper wire hanging point.

3. A novel self-supporting low-drilling high-span tower as claimed in claim 1, characterized in that: The top surface and the bottom surface of the lower conductor hanging point are respectively provided with a lower conductor jumper hanging plate and a lower conductor hanging plate.

4. A novel self-supporting low-drilling high-span tower as claimed in claim 1, characterized in that: It also includes an upper conductor, a transition conductor and a lower conductor connected in sequence on the same vertical plane, wherein the upper conductor is connected from the first adjacent pole tower to the upper conductor hanging plate, the transition conductor is connected from the upper conductor jumper hanging plate to the lower conductor jumper hanging plate, and the lower conductor is connected from the lower conductor hanging plate to the second adjacent pole tower.

5. A novel self-supporting low-drilling high-span tower as claimed in claim 4, characterized in that: It also includes an insulator string, which is sleeved on the outside of the conductor at the hanging plate position.

6. A novel self-supporting low-drilling high-span tower as claimed in claim 1, characterized in that: It also includes a jumper, one end of which is connected to the transition conductor, and the other end of which is connected to the upper conductor or the lower conductor on the same vertical plane.

7. A novel self-supporting low-drilling high-span tower as claimed in claim 1, characterized in that: The fixed end of the cross arm is connected to the main rod through a flange.

8. A novel self-supporting low-drilling high-span tower as claimed in claim 1, characterized in that: The main rod is a multi-section connection structure, and the rods of the multi-section main rod are connected by flanges.

9. A novel self-supporting low-drilling high-span tower as claimed in claim 1, characterized in that: The bottom of the main rod is connected to the ground through a root bolt.

10. A novel self-supporting low-drilling high-span pole tower as claimed in any one of claims 1 to 9, characterized in that: The main pole is configured as a steel pipe pole tower type.

Images