WO2015101272A1 - 一种输电线路格构式抱杆 - Google Patents

一种输电线路格构式抱杆 Download PDF

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Publication number
WO2015101272A1
WO2015101272A1 PCT/CN2014/095457 CN2014095457W WO2015101272A1 WO 2015101272 A1 WO2015101272 A1 WO 2015101272A1 CN 2014095457 W CN2014095457 W CN 2014095457W WO 2015101272 A1 WO2015101272 A1 WO 2015101272A1
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Prior art keywords
lattice
section
type pole
pole according
flange
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PCT/CN2014/095457
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English (en)
French (fr)
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郝玉靖
倪达
夏拥军
缪谦
马一民
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国家电网公司
中国电力科学研究院
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Publication of WO2015101272A1 publication Critical patent/WO2015101272A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E04H12/10—Truss-like structures

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  • the invention relates to a transmission line pole, in particular to a grid-type pole of a transmission line.
  • the pole type of the construction of the domestic transmission line construction tower is mainly of the tubular type and the lattice type.
  • the lattice type holding rod is lighter than the single column type self-weight under the same carrying capacity, and the longitudinal stability is more Good, the bending strength is large, and the lateral deformation is small.
  • poles Commonly used materials for poles are steel standard sections and aluminum standard sections.
  • the steel has a high density and the weight of the pole is heavy, which is not conducive to assembly and disassembly.
  • the density of aluminum is relatively small, and the weight of the formed poles is increased after connecting the steel flanges, which is not convenient for manual installation and handling, especially for the construction of transmission lines in mountainous areas and harsh environments with complex terrain;
  • Progressive, glass fiber reinforced resin-based composite materials, namely glass reinforced plastics are gradually applied to poles, but glass-reinforced steel poles have the following disadvantages:
  • the elastic modulus of FRP is 5 times smaller than that of steel and the rigidity is low.
  • FRP generally cannot be used for a long time under high temperature.
  • general-purpose polyester FRP is generally used only below 100 °C; general-purpose epoxy FRP is above 60 °C, but the strength is significantly reduced.
  • the specific solution of the present invention is: a transmission line grid-type pole, the lattice-type pole is composed of a suspension base, a standard section and a pulley, and the two ends of the standard section are provided with a tapered end section.
  • the standard section and the end section are composed of a plurality of sections, the section body is made of a carbon fiber reinforced resin-based composite material, and adjacent body joints are connected by flanges, and the body section of the standard section includes pressing Four vertical main tubes arranged in a rectangular shape and inclined tubes between adjacent main tubes, the end joints comprising four main tubes arranged in a tapered shape and a inclined tube between adjacent main tubes, the flange comprising a rectangular base And a cannula disposed at four corners of the rectangular base, the standard The mains of the quasi-section and the end section are respectively inserted into the cannula by glue bonding.
  • the pole in the present invention is made of a carbon fiber reinforced resin-based composite material, which has the following advantages:
  • Abrasion resistance and abrasion resistance; carbon fiber reinforced resin matrix composite materials have excellent fatigue resistance, small thermal expansion coefficient and high thermal conductivity, and have basic properties of abrasion resistance and wear resistance.
  • Carbon fiber has excellent corrosion resistance and does not swell and deteriorate in long-term soaking in acids, alkalis, salts and solvents.
  • Carbon fiber reinforced resin-based composites can be used in wet environments and water for a long time. Generally, the strength retention rate in the fiber direction is high, and the retention rate perpendicular to the fiber direction is low.
  • the pole in the invention adopts a round pipe as the main and auxiliary materials, which reduces the influence of the wind load on the stability; the integral component adopts the assembly design, and the plurality of sections are connected by the flange, and the design standard according to different lifting requirements
  • the mold is convenient for mass production and convenient for processing and manufacturing.
  • the invention adopts large-scale finite element analysis software structural unit optimization design, reduces the size and weight of the pole section, and is convenient for transportation and use in mountainous areas.
  • FIG. 1 is a schematic structural view of a lattice-type pole of the present invention
  • Figure 2 is a schematic view showing the connection of the main pipe of the present invention and the flange;
  • Figure 3 is a schematic view of the flange structure of the present invention.
  • Figure 4 is a plan view of the flange of the present invention.
  • a transmission line grid-type pole is composed of a suspension base 7, a standard section 1 and a pulley 6 in sequence, and both ends of the standard section 1
  • a tapered end section is provided, the end section includes an upper end section 2 and a lower end section 3, and the upper end section 2, the standard section 1, and the lower end section 3 are composed of a plurality of sections, and the adjacent sections are passed between the flanges 4 Connection, as shown in Figures 3 and 4, the flange 4 comprises a rectangular base 8 and a cannula 5 disposed at four corners of the rectangular base, the cannula 5 preferably being an aluminum alloy, the upper end section 2, standard
  • the main pipe of the lower end section 3 is inserted into the insertion tube 5 to be bonded by epoxy glue, and the insertion hole 5 is provided with a bolt hole 9 arranged in a fan shape, and the flange 4 of the adjacent body is passed between Bolted; one end of the side of the rectangular base 8 is provided with a hoop, and both
  • the joints of the upper end section 2 are connected by a flange 4, and the flange 4 of the flange 4 is inclined upwards, the downwardly facing cannula is inclined outward, and the cannula of the flange 4 is inserted.
  • the suspension base 7 includes a chassis and a channel steel disposed on the chassis, the channel steel is provided with a pulley;
  • the pulley 6 is made of materials Steel Q235;
  • the main pipe is made by a carbon fiber reinforced resin-based composite material by a winding forming process;
  • the inclined pipe is made by a pultrusion process of a carbon fiber reinforced resin-based composite material, and the carbon fiber reinforced resin-based composite material includes Carbon fiber and epoxy resin.
  • N’ N+500*9.8
  • N is the comprehensive calculation pressure of the pole, and the data of the pole at different inclinations are shown in Table 2:
  • the invention adopts carbon fiber reinforced resin matrix composite material, and the physical and mechanical properties of the steel and aluminum alloy are compared as shown in Table 3:
  • the main pipe in the present invention is made by a carbon fiber reinforced resin-based composite material by a winding forming process; the mechanical properties of the main pipe produced by the winding forming process are as shown in Table 4:
  • the inclined tube in the invention is made by a pultrusion process of a carbon fiber reinforced resin-based composite material; the mechanical properties of the inclined tube made by a pultrusion process are shown in Table 5:

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

一种输电线路格构式抱杆，该抱杆由悬浮底座(7)、标准节(1)以及滑轮(6)顺次连接组成，标准节(1)的两端设有锥形端节，标准节(1)和锥形端节由多个节身组成，节身由碳纤维增强树脂基复合材料制成，相邻节身之间通过法兰(4)连接，标准节(1)的节身包括按矩形布置的四根竖直主管以及相邻主管之间的斜管，端节节身包括按锥形布置的四根主管以及相邻主管之间的斜管，法兰(4)包括矩形底座(8)以及设置在矩形底座四角的插管(5)，标准节(1)和锥形端节的主管分别插入插管(5)内并通过胶水粘接。

Description

一种输电线路格构式抱杆 技术领域
本发明涉及一种输电线路抱杆，具体涉及一种输电线路格构式抱杆。
背景技术
目前，国内输电线路施工铁塔组立施工用抱杆的杆体型式主要有管式和格构式两种，格构式抱杆在同样承载能力下比单体柱式自重更轻，纵向稳定性更好，抗弯强度大，侧向变形小。
抱杆用材料普遍使用的有钢制标准节及铝制标准节。钢材密度大，制成的抱杆较重，不利于装拆和搬运。铝材密度相对较小，制成的抱杆连接钢法兰后重量增大，不便于人工安装和搬运，特别是地势复杂的山区和环境恶劣的地区的输电线路工程施工；随着材料科学的进步，玻璃纤维增强树脂基复合材料即玻璃钢逐渐应用于抱杆，但玻璃钢抱杆存在如下缺点：
(1)弹性模量低：玻璃钢的弹性模量比钢小5倍，刚性较低。
(2)耐温期不长：玻璃钢一般不能在高温下长期使用，例如通用聚酯玻璃钢一般只在100℃以下使用；通用型环氧玻璃钢在60℃以上，但强度有明显下降。
(3)易老化：在紫外线、风砂雨雪、化学介质、机械应力等作用下性能容易下降。
发明内容
本发明的目的是提供一种强度高、重量轻、由碳纤维增强树脂基复合材料制成的输电线路格构式抱杆。
本发明的具体方案为：一种输电线路格构式抱杆，所述格构式抱杆由悬浮底座、标准节以及滑轮顺次连接组成，所述标准节的两端设有锥形端节，所述标准节和端节由多个节身组成，所述节身是由碳纤维增强树脂基复合材料制成，相邻节身之间通过法兰连接，所述标准节的节身包括按矩形布置的四根竖直主管以及相邻主管之间的斜管，所述端节节身包括按锥形布置的四根主管以及相邻主管之间的斜管，所述法兰包括矩形底座以及设置在所述矩形底座四角的插管，所述标 准节和端节的主管分别插入所述插管内通过胶水粘接。
采用上述技术方案，本发明的技术效果有：
本发明中的抱杆采用碳纤维增强树脂基复合材料制成，其具有如下优点：
(1)具有高的比强度和比模量；密度低，其强度是高强度钢和铝合金的4倍左右，玻璃钢的2倍；比模量是玻璃钢的3倍。
(2)耐疲劳；在静态下，碳纤维增强树脂基复合材料循环105次、承受90％的极限强度应力时才被破坏，而钢材只能承受极限强度的50％左右。
(3)热膨胀系数小；碳纤维的热膨胀系数α具有显著的各向异性，使其复合材料的α也具有各向异性。
(4)耐磨擦，抗磨损；碳纤维增强树脂基复合材料有优良的耐疲劳特性、热膨胀系数小和热导率高的特性，具耐磨擦、抗磨损的基本性能。
(5)耐腐蚀性好。碳纤维的耐蚀性非常优异，在酸、碱、盐和溶剂中长期浸泡不会溶胀变质。
(6)耐水性好。碳纤维增强树脂基复合材料可长期在潮湿环境和水中使用。一般沿纤维方向的强度保持率较高，垂直于纤维方向的保持率较低。
(7)导电性好；碳纤维具有导电性能。
本发明中的抱杆采用了圆管作为主、辅材，降低了风载荷对稳定性的影响；整体构件采用装配式设计，及多个节身通过法兰连接，根据不同起重量要求设计标准模具，便于实现批量化生产，方便加工制造；本发明采用大型有限元分析软件结构单元优化设计，减小了抱杆截面尺寸与重量，便于山区运输和使用。
附图说明
图1是本发明格构式抱杆的结构示意图；
图2是本发明主管与法兰的连接示意图；
图3是本发明法兰结构示意图；
图4是本发明法兰俯视图。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步的详细说明。
如图1和图2所示，一种输电线路格构式抱杆，所述格构式抱杆由悬浮底座7、标准节1以及滑轮6顺次连接组成，所述标准节1的两端设有锥形端节，所述端节包括上端节2和下端节3，所述上端节2、标准节1、下端节3由多个节身组成，相邻节身之间通过法兰4连接，如图3和图4所示，所述法兰4包括矩形底座8以及设置在所述矩形底座四角的插管5，所述插管5优选为铝合金，所述上端节2、标准节1、下端节3的主管分别插入所述插管5内通过环氧胶粘接，所述插管5四周设有呈扇形布置的螺栓孔9，相邻节身的法兰4之间通过螺栓连接；所述矩形底座8边部的一端设有抱箍，所述斜管的两端紧固在轴向呈对角线布置的抱箍内；所述法兰4优选采用的材质为钢Q345；所述标准节1的节身包括按矩形布置的四根竖直主管以及相邻主管之间的斜管，所述斜管在相邻主管之间呈对角线设置，所述标准节1的节身之间通过法兰4连接，且该法兰中的插管5竖直设置；所述下端节3的节身包括按锥形布置的四根主管以及相邻主管之间的斜管，所述锥形布置是主管由上至下聚拢，所述斜管在相邻主管之间呈对角线设置，所述下端节3的节身之间通过法兰4连接，且该法兰4管口朝上的插管向外倾斜，管口朝下的插管向内倾斜，并使法兰4的插管朝向为一条斜线；所述上端节2的节身包括按锥形布置的四根主管以及相邻主管之间的斜管，所述锥形布置是主管由下至上聚拢，所述斜管在相邻主管之间呈对角线设置，所述上端节2的节身之间通过法兰4连接，且该法兰4管口朝上的插管向内倾斜，管口朝下的插管向外倾斜，并使法兰4的插管朝向为一条斜线；所述悬浮底座7包括底盘以及设置在底盘上的槽钢，所述槽钢内设有滑轮；所述滑轮6采用的材质均为钢Q235；所述主管是由碳纤维增强树脂基复合材料通过缠绕成型工艺制成；所述斜管是由碳纤维增强树脂基复合材料通过拉挤成型工艺制成，所述碳纤维增强树脂基复合材料包括碳纤维和环氧树脂两部分。
下面结合具体测试对本发明格构式抱杆作进一步说明，进行测试的格构式抱杆的尺寸参数如表1所示：
表1 格构式抱杆的尺寸参数
性能 取值
主杆外径(mm) 70
主杆壁厚(mm) 5
辅杆外径(mm) 40
辅杆壁厚(mm) 2.5
底部截面宽度(mm) 240
中部截面宽度(mm) 480
顶部截面宽度(mm) 240
底端锥段长度(m) 4
顶端锥段长度(m) 4
中段长度(m) 4×3
首先测试抱杆由被起吊重物产生的最大轴心压力，若考虑绳索、滑轮及抱杆顶端其他附件的影响，取这些物件的质量总和为500kg，则抱杆的轴心压力为：
N’＝N+500*9.8
式中，N为抱杆的综合计算压力，抱杆在不同倾角下的数据如表2：
表2 抱杆数据结果总汇
Figure PCTCN2014095457-appb-000001
本发明采用碳纤维增强树脂基复合材料，其与钢、铝合金的物理及力学性能比较如表3所示：
表3 复合材料与钢、铝合金的物理及力学性能比较
Figure PCTCN2014095457-appb-000002
由表3可以看出，碳纤维增强树脂基复合材料的综合性能比玻璃钢更加优异，比强度超过钢的20倍，是铝合金的7倍，玻璃钢的2倍。弹性模量是玻璃钢的2.5倍。因此，采用碳纤维增强树脂基复合材料制造抱杆。
本发明中的主管是由碳纤维增强树脂基复合材料通过缠绕成型工艺制成；通过缠绕成型工艺制成的主管力学性能参数如表4所示：
表4 缠绕成型力学性能参数
性能 取值
压缩轴向模量(GPa) 60
压缩横向模量(GPa) 25
拉伸/压缩强度(MPa) 649
泊松比 0.31
纵向剪切模量(GPa) 5
横向剪切模量(GPa) 4
剪切强度(MPa) 154
密度(g/cm3) 1.5
本发明中的斜管是由碳纤维增强树脂基复合材料通过拉挤成型工艺制成；通过拉挤成型工艺制成的斜管力学性能参数如表5所示：
表5 拉挤成型力学性能参数
性能 取值
压缩轴向模量(GPa) 110
压缩横向模量(GPa) 8
拉伸/压缩强度(MPa) 1030
泊松比 0.28
纵向剪切模量(GPa) 5
横向剪切模量(GPa) 4
剪切强度(MPa) 154
密度(g/cm3) 1.5
最后应当说明的是：以上实施例仅用以说明本发明的技术方案而非对其限制，尽管参照上述实施例对本发明进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本发明的具体实施方式进行修改或者等同替换，而未脱离本发明精神和范围的任何修改或者等同替换，其均应涵盖在本发明的权利要求范围当中。

Claims (9)

  1. 一种输电线路格构式抱杆，所述格构式抱杆由悬浮底座(7)、标准节(1)以及滑轮(6)顺次连接组成，其特征在于，所述标准节(1)的两端设有锥形端节，所述标准节(1)和端节由多个节身组成，所述节身是由碳纤维增强树脂基复合材料制成，相邻节身之间通过法兰(4)连接，所述标准节(1)的节身包括按矩形布置的四根竖直主管以及相邻主管之间的斜管，所述端节节身包括按锥形布置的四根主管以及相邻主管之间的斜管，所述法兰(4)包括矩形底座(8)以及设置在所述矩形底座四角的插管(5)，所述标准节(1)和端节的主管分别插入所述插管(5)内通过胶水粘接。
  2. 如权利要求1所述的格构式抱杆，其特征在于，所述插管(5)四周设有呈扇形布置的螺栓孔(9)，相邻节身的法兰(4)之间通过螺栓连接。
  3. 如权利要求1所述的格构式抱杆，其特征在于，所述矩形底座(8)边部的一端设有铝合金抱箍，所述斜管的两端紧固在轴向呈对角线布置的抱箍内。
  4. 如权利要求1所述的格构式抱杆，其特征在于，所述法兰(4)采用的材质为钢Q345。
  5. 如权利要求1所述的格构式抱杆，其特征在于，所述悬浮底座(7)包括底盘以及设置在底盘上的槽钢，所述槽钢内设有滑轮。
  6. 如权利要求1或5所述的格构式抱杆，其特征在于，所述滑轮采用的材质均为钢Q235。
  7. 如权利要求1所述的格构式抱杆，其特征在于，所述主管是由碳纤维增强树脂基复合材料通过缠绕成型工艺制成。
  8. 如权利要求1所述的格构式抱杆，其特征在于，所述斜管是由碳纤维增强树脂基复合材料通过拉挤成型工艺制成。
  9. 如权利要求1所述的格构式抱杆，其特征在于，所述胶水为环氧胶。
PCT/CN2014/095457 2013-12-31 2014-12-30 一种输电线路格构式抱杆 WO2015101272A1 (zh)

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CN109167299A (zh) * 2018-10-25 2019-01-08 新疆送变电有限公司 一种门型抱杆跨越架
CN109779382A (zh) * 2019-03-18 2019-05-21 国网上海市电力公司 一种用于钢管杆施工的可伸缩独脚抱杆组件
CN110541598A (zh) * 2019-10-22 2019-12-06 张卫民 一种特高压铁塔组立抱杆
CN114319993A (zh) * 2021-12-31 2022-04-12 国网江苏省电力有限公司建设分公司 一种电力抱杆标准节组装对角线调整工装

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CN103726710A (zh) * 2013-12-31 2014-04-16 国家电网公司 一种输电线路格构式抱杆
CN105003118B (zh) * 2015-07-27 2018-07-17 中国电力科学研究院 一种用于组装输电塔的抱杆
CN113501445A (zh) * 2021-07-29 2021-10-15 南京讴歌机械制造有限公司 一种落地抱杆

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CN107916821A (zh) * 2017-12-23 2018-04-17 中国电力工程顾问集团西北电力设计院有限公司 一种高海拔地区330kV双回路四柱钢管杆终端塔
CN109167299A (zh) * 2018-10-25 2019-01-08 新疆送变电有限公司 一种门型抱杆跨越架
CN109779382A (zh) * 2019-03-18 2019-05-21 国网上海市电力公司 一种用于钢管杆施工的可伸缩独脚抱杆组件
CN110541598A (zh) * 2019-10-22 2019-12-06 张卫民 一种特高压铁塔组立抱杆
CN114319993A (zh) * 2021-12-31 2022-04-12 国网江苏省电力有限公司建设分公司 一种电力抱杆标准节组装对角线调整工装
CN114319993B (zh) * 2021-12-31 2023-10-20 国网江苏省电力有限公司建设分公司 一种电力抱杆标准节组装对角线调整工装

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