Double-exhalation-height door type drilling and spanning same-tower pole tower

Abstract

The embodiment of the utility model provides a double-expiratory-height door type drilling and spanning same-tower pole tower which comprises two tower body assemblies, and each tower body assembly comprises a first tower body section, an adjustable tower body section, a second tower body section and a tower leg section which are sequentially arranged from top to bottom. Wherein the adjustable tower body section is one of a plurality of tower body sections with different heights; according to the adjustable drilling and crossing tower, the requirements of different nominal heights of the crossing side wire and the drilling and crossing side wire are met, the tower body sections with different heights are designed, and the tower body sections with different heights can be selected as adjustable tower body sections according to design requirements in the actual application scene of the drilling and crossing tower; the variable scene of the drilling and crossing call height when a newly-built line drills and crosses existing power transmission lines with different voltages is met, and one-time design and multi-scene use of the drilling and crossing tower are achieved. And on the other hand, the embodiment of the utility model adopts a form of drilling and spanning on the same tower, so that the occupied area of the iron tower is saved when a newly-built power transmission line realizes cross drilling and spanning.

Description

Technical Field

[0001] The present application relates to the technical field of power transmission line iron towers, and in particular to a double-call high-door type drilling span same-tower pole tower. Background Art

[0002] With the development of the power transmission industry, there are more and more multi-circuit parallel corridors. According to the current relevant specifications of the power industry, low-voltage overhead transmission lines must be located below high-voltage transmission lines. However, existing transmission lines generally do not have a conventional height reserved for drilling, and when new transmission lines continuously intersect with multiple existing transmission lines in the transmission channel, they need to continuously cross and drill over the existing transmission lines, which has certain difficulties and technical requirements.

[0003] In the prior art, the above problems are generally solved by upgrading and modifying existing overhead lines or by using cable drilling solutions. However, upgrading and modifying existing transmission lines not only requires coordinating the power outage plan of existing transmission lines, significantly prolonging the project cycle, but also increasing investment costs. If the cable drilling solution is adopted, the transmission cost is relatively high because the cable line with the same transmission capacity is 5-10 times more expensive per kilometer than the overhead line.

[0004] Therefore, it is urgent to design a suitable drilling tower to solve the problems of long project cycle and high cost when drilling new transmission lines across existing transmission lines. Utility Model Content

[0005] In view of the above problems, the embodiment of the utility model provides a double-call high-door type drilling span same-tower tower to reduce the construction cost and shorten the project cycle.

[0006] The utility model embodiment provides a double-call high-door type drilling span same-tower pole tower, comprising: two tower body assemblies, wherein each of the tower body assemblies comprises a first tower body section, an adjustable tower body section, a second tower body section and a tower leg section arranged in sequence from top to bottom; wherein the adjustable tower body section is one tower body section among a plurality of tower body sections of different heights.

[0007] A crossing conductor crossarm is arranged across the middle or lower part of the two first tower sections, and crossing side conductor hanging points are arranged at both ends and the middle part of the crossing conductor crossarm. A crossing ground wire crossarm is arranged on the outer side of the top of each of the first tower sections, and a crossing side ground wire hanging point is arranged at the top of the crossing ground wire crossarm.

[0008] The outer side of each adjustable tower body section is provided with a multi-layer cross-arm type support insulator, and the multi-layer cross-arm type support insulators arranged on the outer sides of the two adjustable tower body sections are symmetrically arranged.

[0009] A drill-through conductor crossarm is arranged across the middle of the two second tower sections, a drill-through ground wire crossarm is arranged on the outer side of the upper part of each second tower section, drill-through side conductor hanging points are arranged at both ends and the middle of the drill-through conductor crossarm, and a drill-through side ground wire hanging point is arranged at the top of the drill-through ground wire crossarm.

[0010] In a possible implementation, the crossing wire crossarm extends outward toward the outer sides of the two first tower sections, and the longitudinal section of the crossing wire crossarm is a first isosceles trapezoid, the length of the upper base of the first isosceles trapezoid is equal to the distance between the outer sides of the two first tower sections, and the length of the lower base of the first isosceles trapezoid is greater than the length of the upper base.

[0011] In a possible implementation, the drilling wire cross arm extends outward toward the outside of the two second tower sections, and the longitudinal section of the drilling wire cross arm is a second isosceles trapezoid, the length of the lower base of the second isosceles trapezoid is equal to the distance between the outsides of the two second tower sections, and the length of the lower base of the second isosceles trapezoid is less than the length of the upper base.

[0012] In a possible implementation, the longitudinal section of the cross arm crossing the ground wire is a first triangle, the first triangle is a right triangle, and the hypotenuse of the first triangle faces the ground.

[0013] In a possible implementation, the longitudinal section of the ground-penetrating crossarm is a second triangle, the second triangle is a right-angled triangle, and the hypotenuse of the second triangle faces the ground.

[0014] In a possible implementation, cross-arm type support insulators are provided at both ends of the crossing conductor cross-arm, and cross-arm type support insulators are provided at both ends of the drilling conductor cross-arm.

[0015] The lower base of the first isosceles trapezoid is equal to the upper base of the second isosceles trapezoid, and the length of the outer right-angled side of the second triangle is less than the length extending outward across the conductor crossarm and through the conductor crossarm.

[0016] In a possible implementation, the crossing side conductor on the crossing side conductor hanging point set at the end and the drilling side conductor on the drilling side conductor hanging point set at the end are connected by a side conductor, and the side conductors are connected to the multi-layer cross-arm post insulators in sequence from top to bottom, wherein the multi-layer cross-arm post insulators are arranged at intervals.

[0017] In a possible implementation, the crossing side wire on the crossing side wire hanging point arranged in the middle and the drilling side wire on the drilling side wire hanging point arranged in the middle are connected by a tension-type middle wire.

[0018] In a possible implementation manner, the height of the first tower section is less than or equal to the height of the second tower section.

[0019] In a possible implementation manner, the heights of the two tower leg sections are the same or different.

[0020] The utility model provides a double-call high-door type drilling span same-tower pole tower, comprising two tower body components, wherein each tower body component comprises a first tower body section, an adjustable tower body section, a second tower body section and a tower leg section arranged in sequence from top to bottom; wherein the adjustable tower body section is one of a plurality of tower body sections of different heights; a crossing wire cross arm is arranged horizontally on the middle or lower part of the two first tower body sections, and crossing side wire hanging points are arranged at both ends and the middle part of the crossing wire cross arm, and a A ground wire cross arm is provided across the ground wire, and a ground wire hanging point is provided at the top of the ground wire cross arm; a multi-layer cross arm type support insulator is provided on the outside of each adjustable tower section, and the multi-layer cross arm type support insulators provided on the outside of the two adjustable tower sections are symmetrically provided; a drill-through conductor cross arm is provided across the middle of the two second tower sections, and a ground wire cross arm is provided on the upper outside of each second tower section, and a drill-through conductor hanging point is provided at both ends and the middle of the drill-through conductor cross arm, and a drill-through side ground wire hanging point is provided at the top of the drill-through ground wire cross arm. The requirements of different call heights of the cross-over side conductor and the drill-through side conductor are met, and by designing multiple tower sections of different heights, the designer can select tower sections of different heights as adjustable tower sections according to the site requirements in the construction scenario, meeting the scenario of variable call heights of drilling and crossing when drilling across existing transmission lines of different voltages for new transmission lines, and realizing the one-time design and multi-scenario use of the drill-through tower. On the other hand, the embodiment of the utility model adopts the form of drilling spans on the same tower, which saves the floor space of the iron tower when cross-drilling spans are realized in newly-built transmission lines.

[0021] In addition to the technical problems solved by the embodiments of the utility model described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of the technical solutions, other technical problems that can be solved by the double-call high-door drilling span same-tower tower provided by the embodiments of the utility model, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a double-call high-door drilling span tower provided by an embodiment of the utility model;

[0024] Figure 2 A schematic structural diagram of another angle of a double-high-door drilling span with a same tower provided in an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 100: tower assembly;

[0027] 200: first tower section; 210: cross arm of the crossing conductor; 211: hanging point of the crossing side conductor;

[0028] 300: adjustable tower section; 301: cross-arm support insulator;

[0029] 400: Second tower section;

[0030] 410: Drilling over the conductor cross arm; 411: Drilling over the side conductor hanging point;

[0031] 420: Cross arm of the drilling ground wire; 421: Hanging point of the drilling side ground wire;

[0032] 500: tower leg section;

[0033] 601: edge wire;

[0034] 602: middle conductor;

[0035] 603: Crossing the side ground line;

[0036] 604: Crossing side conductor;

[0037] 605: Drilling through the side ground wire;

[0038] 606: Drilling through the side conductor. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation of the present invention.

[0043] As described in the background technology, in the process of planning and implementing new transmission lines, it is often necessary to drill through existing transmission lines. This situation usually occurs in densely populated urban areas, transmission corridors, or areas with complex existing power grid structures. Since the design and construction of existing transmission lines mainly focus on their own operational safety and efficiency, they often do not consider and reserve sufficient space or height for new lines to drill through.

[0044] When a new transmission line needs to continuously cross multiple existing lines in the transmission channel, it is necessary to continuously cross and drill over the existing transmission lines. In order to solve this problem, the existing technology uses the existing overhead lines to be elevated and modified or the cable drilling scheme to be adopted. However, the elevation and modification of existing transmission lines not only requires the coordination of the power outage plan of the existing transmission lines, which significantly extends the project cycle, but also increases the investment cost. However, if the cable drilling scheme is adopted, the transmission cost is relatively high because the cable line with the same transmission capacity is 5-10 times more expensive per kilometer than the overhead line.

[0045] In view of the above technical problems, the embodiment of the utility model designs a double-height-gate-type drilling-span tower, including two tower body components, each of which includes a first tower body section, an adjustable tower body section, a second tower body section and a tower leg section. Among them, the first tower body section is provided with a crossing conductor crossarm, and the second tower body section is provided with a drilling-over conductor crossarm. The crossing conductor crossarms and drilling-over conductor crossarms of different heights can meet the requirements of different heights on the drilling-over side and the crossing side. In addition, the adjustable tower body section is a tower body section selected from a plurality of tower body sections of different heights according to the actual application scenario of the drilling-over tower, which meets the scenario of variable drilling-over height and crossing-over height when the new line drills over the existing transmission lines of different voltages, and realizes the one-time design and multi-scenario use of the drilling-over tower.

[0046] The structure of the double-call high-door drilling span tower provided by the utility model is described in detail below in conjunction with specific embodiments.

[0047] Reference Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a double-call high-door type drilling span same-tower pole tower, including two tower body assemblies 100, wherein each tower body assembly 100 includes a first tower body section 200, an adjustable tower body section 300, a second tower body section 400 and a tower leg section 500.

[0048] In some embodiments, each tower assembly 100 is provided with a first tower section 200 , an adjustable tower section 300 , a second tower section 400 and a tower leg section 500 in order from top to bottom.

[0049] Optionally, each component in the tower body assembly 100 may be connected by bolts, for example, the lower end of the first tower body section 200 and the upper end of the adjustable tower body section 300 may be connected by bolts.

[0050] It should be noted that, in actual cross-drilling scenarios, the height of the existing transmission line that the new transmission line crosses is variable, which will cause the height of the drilling side or the crossing side to be variable when designing the drilling-spanning tower. Therefore, the embodiment of the utility model pre-designs a plurality of tower body section schemes of different heights. In the actual application scenario of the drilling-spanning tower, the designer can select a tower body section from a plurality of tower body section schemes of different heights as an adjustable tower body section 300 according to the specific drilling-spanning environment requirements, and then the construction site can install the adjustable tower body section 300 to the drilling-spanning tower, which meets the variable scenarios of the drilling-spanning height and the crossing height when the new line drills across the existing transmission lines of different voltages.

[0051] In other possible embodiments, the adjustable tower section 300 may also be one or more tower sections selected from a plurality of tower sections of different heights. If multiple tower sections are selected, the multiple tower sections may be combined and used according to the requirements of the actual application scenario of drilling across the tower.

[0052] In this embodiment, a crossover conductor cross arm 210 is disposed across the middle or lower portion of the two first tower sections 200. Figure 1 As shown, a crossing conductor cross arm 210 is arranged across the lower part of the two first tower sections 200. A crossing side conductor hanging point 211 is arranged at both ends and the middle position of the crossing conductor cross arm 210. The crossing side conductor hanging point 211 is used to connect the crossing side conductor 604.

[0053] Optionally, the crossing wire cross arm 210 may be fixed to a corresponding position in the middle or lower portion of the first tower body section 200 by means of U-shaped bolts to ensure that the crossing wire cross arm 210 is securely installed.

[0054] Correspondingly, a drill-through conductor cross arm 410 is disposed across the middle of the two second tower sections 400 , and drill-through side conductor hanging points 411 are disposed at both ends and the middle of the drill-through conductor cross arm 410 . The drill-through side conductor hanging points 411 are used to connect the drill-through side conductor 606 .

[0055] Optionally, the drilling conductor cross arm 410 may also be fixed to a corresponding position in the middle of the second tower body section 400 by means of a U-shaped bolt to ensure that the drilling conductor cross arm 410 is securely installed.

[0056] The double-call high-door type drilling span same-tower pole tower provided by the embodiment of the utility model comprises two tower body components, wherein each tower body component comprises a first tower body section, an adjustable tower body section, a second tower body section and a tower leg section which are arranged in sequence from top to bottom; wherein the adjustable tower body section is one of a plurality of tower body sections of different heights; a crossing wire cross arm is arranged horizontally on the middle or lower part of the two first tower body sections, and crossing side wire hanging points are arranged at both ends and the middle part of the crossing wire cross arm, and a A ground wire cross arm is crossed, and a ground wire hanging point is arranged on the top of the ground wire cross arm; a multi-layer cross arm type support insulator is arranged on the outside of each adjustable tower section, and the multi-layer cross arm type support insulators arranged on the outside of the two adjustable tower sections are arranged symmetrically; a cross arm of a drilling conductor is arranged across the middle of the two second tower sections, and a ground wire cross arm is arranged on the upper outside of each second tower section, and the two ends and the middle of the drilling conductor cross arm are provided with a ground wire hanging point on the drilling side, and the top of the ground wire cross arm is provided with a ground wire hanging point on the drilling side. It meets the requirements of different heights of the crossing side conductor and the drilling side conductor, and multiple tower sections of different heights are designed. In the construction scenario, tower sections of different heights can be selected as adjustable tower sections according to the site requirements, which meets the requirements of variable drilling height and crossing height when the new transmission line drills and crosses the existing transmission lines of different voltages, and realizes the one-time design and multi-scenario use of the drilling tower. On the other hand, the embodiment of the utility model adopts the form of drilling spans on the same tower, which saves the floor space of the iron tower when cross-drilling spans are realized in newly-built transmission lines.

[0057] In addition, if Figure 1 As shown, a crossing ground wire cross arm 220 is provided on the outer side of the top of each first tower section 200 , and a crossing side ground wire hanging point 221 is provided on the top of the crossing ground wire cross arm 220 . The crossing side ground wire hanging point 221 is used to connect the crossing side ground wire 603 .

[0058] Correspondingly, a ground wire cross arm 420 is provided on the outer side of the upper portion of each second tower section 400 , and a side ground wire hanging point 421 is provided on the top of the ground wire cross arm 420 . The side ground wire hanging point 421 is used to connect the side ground wire 605 .

[0059] Optionally, the ground-crossing crossarm 220 and the ground-penetrating crossarm 420 may also be connected to the first tower section 200 or the second tower section 400 respectively by bolts.

[0060] In some embodiments, the crossing ground wire cross arm 220 can be provided with a crossing side ground wire hanging point 221 by providing a hanging point connector. For example, the hanging point connector can be a U-bolt or a hanging plate. After the U-bolt or the hanging plate is installed at the hanging point position, the crossing side ground wire 603 can be connected to the crossing side ground wire hanging point 221. The installation method of the drilling side ground wire hanging point 421 is similar to the installation method of the crossing side ground wire hanging point 221, and will not be repeated here in this embodiment.

[0061] A multi-layer cross-arm post insulator 301 is arranged outside each adjustable tower body section 300, and the multi-layer cross-arm post insulators 301 arranged outside the two adjustable tower body sections 300 are arranged symmetrically. In this embodiment, the multi-layer cross-arm post insulator 301 provides space for the connection of the crossing side conductor 604 and the drilling side conductor 606, thereby preventing the safety hazard caused by the crossing side conductor 604 and the drilling side conductor 606 being too close to the tower when connecting.

[0062] Optionally, in an embodiment of the utility model, the cross-arm post insulator is connected to the tower body by bolts or other fasteners.

[0063] In another embodiment, if Figure 1 As shown, the crossing conductor cross arm 210 extends outward toward the outside of the two first tower sections 200, and the longitudinal section of the crossing conductor cross arm 210 is a first isosceles trapezoid, the length of the upper base of the first isosceles trapezoid is equal to the distance between the outsides of the two first tower sections 200, and the length of the lower base of the first isosceles trapezoid is greater than the length of the upper base.

[0064] Correspondingly, the drilling conductor cross arm 410 extends outward toward the outer sides of the two second tower sections 400, and the longitudinal section of the drilling conductor cross arm 410 is a second isosceles trapezoid, the length of the lower base of the second isosceles trapezoid is equal to the distance between the outer sides of the two second tower sections 400, and the length of the lower base of the second isosceles trapezoid is less than the length of the upper base.

[0065] In addition, if Figure 1 As shown, the longitudinal section of the ground wire cross arm 220 is a first triangle, which is a right triangle, and the hypotenuse of the first triangle faces the ground. Correspondingly, the longitudinal section of the ground wire cross arm 420 is a second triangle, which is a right triangle, and the hypotenuse of the second triangle faces the ground.

[0066] The double-height portal-type drilling span pole tower provided by the embodiment of the utility model symmetrically designs the double-tower portal-type pole tower, thereby improving the overall rigidity of the pole tower structure and thus improving the safety and reliability of the structure.

[0067] like Figure 1 As shown, in some embodiments, in order to simplify the connection between the crossing side conductor 604 and the drilling side conductor 606, the crossing side conductor 604 on the crossing side conductor hanging point 211 set at the end and the drilling side conductor 606 on the drilling side conductor hanging point 411 set at the end are connected through the side conductor 601, and the side conductor 601 is connected with the multi-layer cross-arm type support insulators in sequence from top to bottom, wherein the multi-layer cross-arm type support insulators 301 are arranged at intervals, and the cross-arm type support insulators arranged at intervals provide a safe space for the connection of the conductors.

[0068] In another embodiment, cross-arm type support insulators are provided at both ends of the crossing conductor cross-arm 210, and cross-arm type support insulators are provided at both ends of the drilling conductor cross-arm 410. The crossing side conductor 604 and the drilling side conductor 606 are respectively installed on the bracket through the cross-arm type support insulators, thereby ensuring sufficient insulation distance and improving the stability of the line.

[0069] Optionally, in an embodiment of the utility model, the side conductor 601, the crossing side conductor 604 and the drilling side conductor 606 can be connected to the cross-arm post insulator by means of binding, bolt connection or bayonet connection to ensure the stability of the installed conductors.

[0070] In addition, the lower base of the first isosceles trapezoid is equal to the upper base of the second isosceles trapezoid, and the length of the outer right-angled side of the second triangle is less than the length of the crossover wire crossarm 210 and the crossover wire crossarm 410 extending outward. Such a concave design prevents the side wire 601 from contacting the tower body when connecting the wires, which may cause safety hazards.

[0071] In order to prevent the conductors from loosening due to prolonged use of the drilling tower, thereby causing a safety hazard, in an embodiment of the utility model, the crossing side conductor on the crossing side conductor hanging point 211 set in the middle and the drilling side conductor on the drilling side conductor hanging point 411 set in the middle are connected by a tension-type middle conductor 602.

[0072] Optionally, the tension connection between the wires can be achieved through adjustable wire clamps. When the wires are loose, the operation and maintenance personnel can easily adjust the lead tension through the adjustable wire clamps according to the line operation conditions, which reduces the difficulty of operation and maintenance and ensures the safety and reliability of the electrical spacing.

[0073] In a possible implementation, the height of the first tower body section 200 is less than or equal to the height of the second tower body section 400 , thereby improving the stability of the tower body assembly 100 .

[0074] In some embodiments, the heights of the two tower leg sections 500 are the same or different.

[0075] Specifically, in order to adapt to different terrain environments, the embodiment of the utility model is provided with a plurality of tower legs of different lengths, and during construction, appropriate tower legs can be selected according to specific scenarios to fix the tower body assembly 100. Figure 1 As shown, the tower is installed on a slope, and a plurality of tower legs of different lengths can be selected to install the tower.

[0076] Optionally, after selecting a tower leg of appropriate length according to the terrain environment and installing the foundation embedded parts in the foundation pit, the tower leg can be fixed to the foundation embedded parts by bolt connection. In addition, each tower leg can be fixed by bolt connection or welding connection.

[0077] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0078] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A double-call high-door type drilling span same tower, characterized in that: include: Two tower body assemblies, wherein each of the tower body assemblies comprises a first tower body segment, an adjustable tower body segment, a second tower body segment and a tower leg segment arranged in sequence from top to bottom; wherein the adjustable tower body segment is one of a plurality of tower body segments of different heights; A crossing conductor cross arm is arranged on the middle or lower part of the two first tower sections, and crossing side conductor hanging points are arranged at both ends and the middle part of the crossing conductor cross arm. A crossing ground wire cross arm is arranged on the outer side of the top of each of the first tower sections, and a crossing side ground wire hanging point is arranged on the top of the crossing ground wire cross arm. A multi-layer cross-arm type support insulator is arranged on the outer side of each adjustable tower body section, and the multi-layer cross-arm type support insulators arranged on the outer sides of the two adjustable tower body sections are arranged symmetrically; A drill-through conductor crossarm is arranged across the middle of the two second tower sections, a drill-through ground wire crossarm is arranged on the outer side of the upper part of each second tower section, drill-through side conductor hanging points are arranged at both ends and the middle of the drill-through conductor crossarm, and a drill-through side ground wire hanging point is arranged at the top of the drill-through ground wire crossarm.

2. The pole tower according to claim 1, characterized in that: The crossing conductor cross arm extends outward toward the outer sides of the two first tower sections, and the longitudinal section of the crossing conductor cross arm is a first isosceles trapezoid, the length of the upper base of the first isosceles trapezoid is equal to the distance between the outer sides of the two first tower sections, and the length of the lower base of the first isosceles trapezoid is greater than the length of the upper base.

3. The pole tower according to claim 2, characterized in that: The drilling conductor cross arm extends outward toward the outer sides of the two second tower sections, and the longitudinal section of the drilling conductor cross arm is a second isosceles trapezoid, the length of the lower base of the second isosceles trapezoid is equal to the distance between the outer sides of the two second tower sections, and the length of the lower base of the second isosceles trapezoid is less than the length of the upper base.

4. The pole tower according to claim 1, characterized in that: The longitudinal section of the cross arm crossing the ground wire is a first triangle, the first triangle is a right triangle, and the hypotenuse of the first triangle faces the ground.

5. The pole tower according to claim 3, characterized in that: The longitudinal section of the ground-penetrating crossarm is a second triangle, the second triangle is a right-angled triangle, and the hypotenuse of the second triangle faces the ground.

6. The pole tower according to claim 5, characterized in that: Both ends of the crossing conductor cross arm are provided with cross arm type support insulators, and both ends of the drilling conductor cross arm are provided with cross arm type support insulators; The lower base of the first isosceles trapezoid is equal to the upper base of the second isosceles trapezoid, and the length of the outer right-angled side of the second triangle is less than the length extending outward across the conductor crossarm and through the conductor crossarm.

7. The pole tower according to claim 3, characterized in that: The crossing side conductor on the crossing side conductor hanging point set at the end and the drilling side conductor on the drilling side conductor hanging point set at the end are connected by side conductors, and the side conductors are connected with the multi-layer cross-arm post insulators in sequence from top to bottom, wherein the multi-layer cross-arm post insulators are arranged at intervals.

8. The pole tower according to claim 6, characterized in that: The crossing side conductor on the crossing side conductor hanging point arranged in the middle and the drilling side conductor on the drilling side conductor hanging point arranged in the middle are connected by a tension-type middle conductor.

9. The pole tower according to claim 1, characterized in that: The height of the first tower section is less than or equal to the height of the second tower section.

10. The pole tower according to claim 1, characterized in that: The heights of the two tower leg sections are the same or different.

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