WO2020093186A1 - Hoisting method for two-level guyed transmission line tower - Google Patents

Hoisting method for two-level guyed transmission line tower Download PDF

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WO2020093186A1
WO2020093186A1 PCT/CN2018/113904 CN2018113904W WO2020093186A1 WO 2020093186 A1 WO2020093186 A1 WO 2020093186A1 CN 2018113904 W CN2018113904 W CN 2018113904W WO 2020093186 A1 WO2020093186 A1 WO 2020093186A1
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tower body
tower
hoisting
cables
crossarm
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PCT/CN2018/113904
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French (fr)
Chinese (zh)
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王聪
邵国栋
庞继勇
郇恒胜
薄尊军
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中国电建集团山东电力建设第一工程有限公司
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Priority to PCT/CN2018/113904 priority Critical patent/WO2020093186A1/en
Publication of WO2020093186A1 publication Critical patent/WO2020093186A1/en

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details

Abstract

Provided is a hoisting method for a two-level guyed transmission line tower, comprising the following steps: S1) ground assembling; S2) hoisting a tower body and an upper cross arm; S3) unhooking; S4) mounting a guyed line; S5) hoisting a lower cross arm; S6) adjusting the mounting precision of the tower body. The method is convenient for controlling construction quality, reducing tonnage requirements for cranes, reducing environmental impact and saving construction costs.

Description

一种输电线路干字型拉线塔吊装方法Hoisting method for dry-shaped cable-drawing tower of power transmission line 技术领域Technical field
本发明涉及铁塔吊装领域,具体涉及一种输电线路干字型拉线塔吊装方法。The invention relates to the field of hoisting iron towers, and in particular to a hoisting method for dry-shaped wire-drawing towers of transmission lines.
背景技术Background technique
干字型拉线塔是同塔双回路高压输电线路的常用塔型,其相比于自立塔,重量较轻,但铁塔组立难度大、施工过程的安全风险也较大,在施工中对吊装技术和安装工艺有很高的要求(参考附图1)。The dry-shaped wire-drawing tower is a common tower type of the double-circuit high-voltage transmission line on the same tower. It is lighter than the self-supporting tower, but the tower is difficult to assemble and the safety risk during the construction process is also large. The technology and installation process have high requirements (refer to Figure 1).
当前干字型拉线塔组立塔施工主要是使用抱杆分段组塔,即每组立一段铁塔后使用临时拉线将塔身固定,然后拆除抱杆后将抱杆位置上移,重新固定抱杆后继续向上安装铁塔,安装完成一节后使用临时拉线再次固定,拆除下节塔身的临时拉线同时上移抱杆,循环此工序,直至铁塔全部组装完成,施工工序繁琐且施工效率低。At present, the construction of the towers of the dry-shaped wire-drawing tower group is mainly to use the poles to group the towers, that is, to use a temporary cable to fix the tower body after each section of the iron tower is established, and then remove the pole to move the pole up and re-fix the pole. After the pole is installed, continue to install the iron tower. After the installation is completed, use a temporary cable to fix it again. Remove the temporary cable of the lower tower body and move the pole up at the same time. Cycle this process until the tower is fully assembled. The construction process is cumbersome and the construction efficiency is low.
部分工程也采用150t轮胎式吊装机整体立塔的方案,即将干字型拉线0塔在地面完全组装完成后,使用150t轮胎式吊装机和30t轮胎式吊装机抬吊将整塔竖立,该方案使用的150t轮胎式吊装机对吊装平台面积和平整度、进场道路宽度等要求都比较高,前期准备工作量大且对施工现场植被破坏面积大,机械成本高。Part of the project also adopts the scheme of integral tower of 150t tire hoist, that is, after the complete assembly of the zero-shaped pull line 0 tower on the ground, the whole tower is erected using 150t tire hoist and 30t tire hoist. The 150t tire hoist used has relatively high requirements on the area and flatness of the hoisting platform and the width of the access road. The preliminary preparation work is large and the vegetation on the construction site has a large area of destruction and high mechanical costs.
在铁塔吊装过程中,对与铁塔的连接一般使用钢丝绳直接绑扎塔身,塔身受力不均匀容易造成铁塔变形,此外钢丝绳对铁塔镀锌层容易造成损伤。In the process of hoisting the iron tower, the steel tower is generally used to directly tie the tower body to the tower. Uneven stress on the tower body can easily cause deformation of the tower. In addition, the steel rope can easily damage the galvanized layer of the tower.
技术解决方案Technical solution
为了解决上述问题,本发明提供了一种输电线路干字型拉线塔吊装方法,根据干字型拉线塔的结构特点,吊装之前先在地面上将四部分分别完成组装,然后分为四部分对铁塔进行分体吊装;分别为塔身及上横担吊装、拉线及构架吊装及两侧的下横担分别吊装。本发明用的具体技术方案如下:In order to solve the above-mentioned problems, the present invention provides a method for hoisting the transmission line dry-shaped cable tower. According to the structural characteristics of the dry-shaped cable tower, the four parts are assembled on the ground before lifting, and then divided into four parts. The iron tower is lifted separately; the tower body and the upper crossarm are hoisted, the cable and the frame are hoisted, and the lower crossarms on both sides are hoisted separately. The specific technical solutions used in the present invention are as follows:
一种输电线路干字型拉线塔吊装方法,包括以下步骤:A hoisting method for dry-shaped cable-drawing tower of transmission line includes the following steps:
S1、地面组装:将塔材运送至塔位,用随车吊在地面分别组装塔身和下横担,上横担直接组装在塔身的顶部;塔身组装完成后在其朝上一侧安装两根正式拉线、在其朝下一侧安装两根临时拉线;S1, ground assembly: transport the tower materials to the tower position, assemble the tower body and the lower crossarm on the ground with the truck crane, and the upper crossarm is directly assembled on the top of the tower body; on the upward side after the tower body assembly is completed Install two formal cables and two temporary cables on the downward side;
S2、起吊塔身和上横担:确定好塔身上的吊点,组装好专用吊具后四点栓挂在吊点处,在塔身的底部安装辅助轮车;吊装机起钩将上横担随塔身同时吊装,当上横担离开地面时,将装载机与塔身底部软连接以控制辅助轮车的移动速度;起吊机继续吊装直到塔身竖立至最大角度后,拆除辅助轮车,将塔身底部与中心桩基础的预埋件连接;S2. Lifting tower body and upper crossarm: Determine the lifting point on the tower body, assemble the special spreader after the four points are bolted to the lifting point, install the auxiliary wheel car at the bottom of the tower body; The crane is hoisted at the same time as the tower body. When the upper crossarm leaves the ground, the loader and the bottom of the tower body are softly connected to control the moving speed of the auxiliary wheel vehicle; the hoisting machine continues to hoist until the tower body is erected to the maximum angle, and the auxiliary wheel vehicle is removed , Connect the bottom of the tower body with the embedded parts of the central pile foundation;
S3、脱钩:将两根正式拉线和两根临时拉线的下端分别连接至对应的拉线桩基础,将专用吊具拆除,吊装机脱钩;S3. Decoupling: Connect the lower ends of the two formal cables and the two temporary cables to the corresponding cable pile foundations respectively, remove the special spreader, and the lifting machine is decoupled;
S4、安装拉线:吊装机将两外两根正式拉线和拉线连接构架掉装置塔身的安装位置并固定,这两根正式拉线的下端个固定连接至相对应的拉线桩基础并拆除两根临时拉线;S4. Installation cable: the hoisting machine will fix the installation position of the two towers and the two external cable and the cable connection structure to the device body. The lower ends of these two cable are fixedly connected to the corresponding cable pile foundation and the two temporary cables are removed. Pull wire
S5、吊装下横担:在所述上横担上安装定滑轮,在塔身的中心基础处安置转向滑车,将牵引绳依次穿过转向滑车和定滑轮后绑扎下横担,所述下横担的端部栓挂棕绳以控制调整吊装稳定性;当左右两侧的下横担都就位后用螺栓紧固在塔身上;S5. Hoisting the lower crossarm: Install the fixed pulley on the upper crossarm, place the steering pulley at the center foundation of the tower body, pass the traction rope through the steering pulley and the fixed pulley in sequence and then tie the lower crossarm, the lower cross Hang the brown rope at the end of the load to control and adjust the stability of the lifting; when the lower cross on the left and right sides are in place, use bolts to fasten the tower body;
S6、调整塔身安装精度:在正式拉线的轴线方向以及垂线方向各架设一台经纬仪用以调整线张力。S6. Adjust the installation accuracy of the tower body: set up a theodolite in the axial direction of the formal cable and the vertical direction to adjust the thread tension.
上述步骤S2中,所述辅助轮车的移动速度为2.5~3.3m/min,当辅助轮车移动时所述吊装机吊臂的转动速度为15~12~18°/min。In the above step S2, the moving speed of the auxiliary wheel vehicle is 2.5 to 3.3 m / min, and the rotating speed of the boom of the hoisting machine when the auxiliary wheel vehicle moves is 15 to 12 to 18 ° / min.
上述步骤S5中,所述定滑轮的安装点设置在距上横担安装面的1/2~3/5处;In the above step S5, the mounting point of the fixed pulley is set at 1/2 to 3/5 from the mounting surface of the upper crossarm;
所述牵引绳的动力端连接在装载机上,所述牵引绳在转向滑车和定滑轮之间拉紧后相对于水平面的倾角为75~85°。The power end of the traction rope is connected to the loader, and the inclination angle of the traction rope with respect to the horizontal plane after being tightened between the steering pulley and the fixed pulley is 75-85 °.
上述步骤S2中,所述塔身上的吊点高度比该塔身的呼称高度高出0.1m。In the above step S2, the height of the hanging point on the tower body is 0.1m higher than the call height of the tower body.
上述步骤S2中所述专用吊具的组装方法为:首先在平衡梁左右两端分别装配滑车,在塔身的四个棱角上分别安装夹具;然后在每个滑车的滑槽中缠上吊装用钢缆,每个所述钢缆的两端头分别连接一个夹具;最后将所述平衡梁吊装在吊装机的吊钩上。The method for assembling the special spreader described in the above step S2 is as follows: first, assemble the trolleys on the left and right ends of the balance beam, and install fixtures on the four corners of the tower body; then wrap the hoisting in the chute of each trolley For steel cables, a clamp is connected to both ends of each of the steel cables; finally, the balance beam is hoisted on the hook of the hoisting machine.
有益效果Beneficial effect
其一,本发明采用分体式组立方法,降低了对起吊机的吨位要求,降低了对植被的破坏,极大减轻了对生态系统的影响,同时也节约了施工成本。First, the present invention adopts a split assembly method, which reduces the tonnage requirements of the crane, reduces the damage to the vegetation, greatly reduces the impact on the ecosystem, and also saves the construction cost.
其二,本发明采用地面组塔配合轮胎式吊装机立塔工序,铁塔组装大部分工作在地面完成,塔材缺陷可以在地面组装过程中发现和解决,施工质量控制优于抱杆组立塔。Secondly, the invention adopts the ground assembly tower to cooperate with the tire hoisting machine vertical tower process, most of the iron tower assembly work is completed on the ground, tower material defects can be found and resolved during the ground assembly process, and the construction quality control is superior to the pole assembly tower .
其三,本发明使用了“定滑轮平衡梁专用吊索+吊装辅助轮车”立塔的关键技术,该关键技术为根据干字型拉线塔结构特点自主研究设计,无需使用抬吊机械,降低了双机抬吊的安全风险,同时降低机械成本。Thirdly, the present invention uses the key technology of the “special sling for the fixed beam balance beam + lifting auxiliary wheel car” tower. This key technology is independently researched and designed according to the structural characteristics of the dry-shaped cable tower, without the use of lifting machinery, reducing The safety risk of double-machine lifting is reduced, and the mechanical cost is reduced at the same time.
其四,本发明利用轮胎式吊装机替代了传统铁塔组立常用的抱杆系统,减少了抱杆运输、组装和拆除等工作量,也大幅降低了临时拉线的使用频次;轮胎式吊装机组立塔施工可以大规模流水作业,提高输电线路施工机械化水平,提高机械设备利用率和施工效率。Fourth, the present invention replaces the conventional pylon system commonly used in traditional iron tower assembly with a tire-type hoisting machine, which reduces the workload of transportation, assembly and disassembly of the pylon, and also greatly reduces the frequency of use of temporary pull wires; Tower construction can be a large-scale flow operation, improve the mechanization level of transmission line construction, improve the utilization rate of mechanical equipment and construction efficiency.
附图说明BRIEF DESCRIPTION
图1为本发明实施例干字型拉线塔吊装完成后结构示意图。FIG. 1 is a schematic diagram of the structure of the dry-shaped cable tower after the hoisting of the embodiment of the present invention is completed.
图2为本发明实施例干字型拉线塔的塔身及上横担吊装示意图。FIG. 2 is a schematic diagram of the hoisting of the tower body and the upper crossarm of the dry-shaped wire-drawing tower according to an embodiment of the present invention.
图3为本发明实施例干字型拉线塔专用吊具安装示意图。Fig. 3 is a schematic diagram of the installation of a special spreader for a dry-shaped pull tower according to an embodiment of the present invention.
图4为图3的局部放大示意图。FIG. 4 is a partially enlarged schematic diagram of FIG. 3.
图5为本发明实施例干字型拉线塔下横担吊装图。FIG. 5 is a hoisting diagram of a cross-arm under a dry-shaped wire-drawing tower according to an embodiment of the present invention.
图中:1为塔身、2为上横担、3为下横担、4为正式拉线、5为辅助轮车、6为吊装机、7为专用吊具,71为滑车,72为平衡梁,73为夹具,8为定滑轮,9为转向滑车。In the picture: 1 is the tower body, 2 is the upper crossarm, 3 is the lower crossarm, 4 is the official cable, 5 is the auxiliary wheel car, 6 is the hoisting machine, 7 is the special spreader, 71 is the trolley, 72 is the balance beam , 73 is a fixture, 8 is a fixed pulley, and 9 is a steering block.
本发明的最佳实施方式Best Mode of the Invention
下面结合附图对本发明进一步解释说明。The present invention will be further explained below with reference to the drawings.
本发明是一种输电线路干字型拉线塔吊装方法,实施过程中包括以下步骤:The invention is a method for hoisting a dry-shaped wire-drawing tower of a transmission line. The implementation process includes the following steps:
S1、地面组装:将塔材运送至塔位,用随车吊在地面分别组装塔身1和下横担3,上横担2直接组装在塔身1的顶部。因正式拉线4的连接构架凸出塔身1,故在塔身1组装完成后在其朝上一侧安装两根正式拉线4、在其朝下一侧安装两根临时拉线;S1. Ground assembly: transport the tower materials to the tower position, assemble the tower body 1 and the lower crossarm 3 on the ground with the truck crane, and the upper crossarm 2 is directly assembled on the top of the tower body 1. Since the connection frame of the formal cable 4 protrudes from the tower body 1, after the tower body 1 is assembled, two formal cables 4 are installed on the upward side and two temporary cables are installed on the downward side;
S2、起吊塔身1和上横担2:确定好塔身1上的吊点,所述塔身1上的吊点高度比该塔身1的呼称高度高出0.1m。组装好专用吊具7后四点栓挂在吊点处,在塔身1的底部安装辅助轮车5;吊装机6起钩将上横担2随塔身1同时吊装,当上横担2离开地面时,将装载机与塔身1底部软连接以控制辅助轮车5的移动速度;起吊机6继续吊装直到塔身1竖立至最大角度后,拆除辅助轮车5,将塔身1底部与中心桩基础的预埋件连接;所述辅助轮车5的移动速度为2.5~3.3m/min,当辅助轮车5移动时所述吊装机6吊臂的转动速度为15~12~18°/min。S2. Lifting the tower body 1 and the upper crossarm 2: Determine the hanging point on the tower body 1, the height of the hanging point on the tower body 1 is 0.1m higher than the calling height of the tower body 1. After assembling the special spreader 7, the four-point bolt is hung at the lifting point, and the auxiliary wheel car 5 is installed at the bottom of the tower body 1; the hoisting machine 6 hooks up the upper crossarm 2 at the same time as the tower body 1, and the upper crossarm 2 When leaving the ground, connect the loader to the bottom of the tower body 1 to control the moving speed of the auxiliary wheel car 5; the hoist 6 continues to hoist until the tower body 1 is erected to the maximum angle, remove the auxiliary wheel car 5, and place the bottom of the tower body 1 Connected with the embedded parts of the center pile foundation; the moving speed of the auxiliary wheel car 5 is 2.5 ~ 3.3m / min, and the rotating speed of the boom of the hoisting machine 6 when the auxiliary wheel car 5 moves is 15 ~ 12 ~ 18 ° / min.
S3、脱钩:将两根正式拉线4和两根临时拉线的下端分别连接至对应的拉线桩基础,将专用吊具7拆除,吊装机6脱钩;S3. Decoupling: Connect the lower ends of the two formal cables 4 and the two temporary cables to the corresponding cable pile foundations respectively, remove the special spreader 7 and the lifting machine 6 is decoupled;
S4、安装正式拉线4:吊装机6将两外两根正式拉线4和拉线连接构架掉装置塔身1的安装位置并固定,这两根正式拉线4的下端个固定连接至相对应的拉线桩基础并拆除两根临时拉线;S4. Installation of formal cable 4: The hoisting machine 6 connects the two external cable 4 and the cable connection structure to the installation position of the device body 1 and fixes them. The lower ends of the two formal cables 4 are fixedly connected to the corresponding cable piles Foundation and dismantle two temporary cables;
S5、吊装下横担3:参考图5,在所述上横担2上安装定滑轮8,在塔身1的中心基础处安置转向滑车9,将牵引绳依次穿过转向滑车9和定滑轮8后绑扎下横担3,所述下横担3的端部栓挂棕绳以控制调整吊装稳定性;当左右两侧的下横担3都就位后用螺栓紧固在塔身1上;所述定滑轮8的安装点设置在距上横担2安装面的1/2~3/5处;所述牵引绳的动力端连接在装载机上,所述牵引绳在转向滑车9和定滑轮8之间拉紧后相对于水平面的倾角为75~85°。S5. Hoisting lower crossarm 3: Refer to FIG. 5, install fixed pulley 8 on the upper crossarm 2, place steering pulley 9 at the center foundation of tower body 1, and pass the traction rope through the steering pulley 9 and the fixed pulley in sequence 8 After tying the lower crossarm 3, the ends of the lower crossarm 3 are tied with brown rope to control and adjust the stability of hoisting; when the left and right lower crossarms 3 are in place, they are fastened to the tower body 1 with bolts The installation point of the fixed pulley 8 is set at 1/2 to 3/5 from the installation surface of the upper crossarm 2; the power end of the traction rope is connected to the loader, and the traction rope is fixed on the steering pulley 9 and fixed After tension between the pulleys 8, the inclination angle with respect to the horizontal plane is 75-85 °.
S6、调整塔身1安装精度:在正式拉线4的轴线方向以及垂线方向各架设一台经纬仪用以调整线张力。S6. Adjust the installation accuracy of the tower body 1: set up a theodolite in the axial direction of the formal cable 4 and the vertical direction to adjust the thread tension.
上述步骤S2中所述专用吊具7的组装方法为:首先在平衡梁72左右两端分别装配滑车71,在塔身1的四个棱角上分别安装夹具73;然后在每个滑车71的滑槽中缠上吊装用钢缆,每个所述钢缆的两端头分别连接一个夹具73;最后将所述平衡梁吊装在吊装机6的吊钩上。The method for assembling the special spreader 7 in the above step S2 is as follows: firstly, the pulleys 71 are assembled on the left and right ends of the balance beam 72, and the fixtures 73 are installed on the four corners of the tower body 1, respectively; A steel cable for hoisting is wrapped in the groove, and a clamp 73 is connected to both ends of each steel cable; finally, the balance beam is hoisted on the hook of the hoisting machine 6.
本实施例中吊装机6选用利勃海尔1100-4.2型吊装设备,其能够可以满足目前干字型拉线塔 最高塔身重量的起吊理论要求。比如采用整体起立吊装方案需要150t轮胎式吊装机,经过优化方案实际采用100t轮胎式吊装机即可满足组立塔要求,减少了施工平台面积和进场道路宽度,具体参数可见下表1:In this embodiment, the hoisting machine 6 uses Liebherr 1100-4.2 type hoisting equipment, which can meet the current lifting theory requirements of the maximum tower body weight of the dry-shaped cable-drawing tower. For example, the overall erection hoisting scheme requires 150t tire hoisting machine. After the optimization scheme, the actual use of 100t tire hoisting machine can meet the requirements of the assembly tower, reducing the construction platform area and access road width. Specific parameters can be seen in the following table 1:
表1 吊装机吊装性能计算对比表Table 1 Comparison Table of Lifting Performance Calculation of Lifting Machine
Figure PCTCN2018113904-appb-000001
Figure PCTCN2018113904-appb-000001

Claims (5)

  1. 一种输电线路干字型拉线塔吊装方法,其特征在于包括以下步骤:A method for hoisting a dry-shaped cable-drawing tower of a power transmission line, which is characterized by comprising the following steps:
    S1、地面组装:将塔材运送至塔位,用随车吊在地面分别组装塔身(1)和下横担(3),上横担(2)直接组装在塔身(1)的顶部;塔身(1)组装完成后在其朝上一侧安装两根正式拉线(4)、在其朝下一侧安装两根临时拉线;S1, ground assembly: transport the tower materials to the tower position, assemble the tower body (1) and the lower crossarm (3) on the ground with the truck crane, and the upper crossarm (2) is directly assembled on the top of the tower body (1) After the tower body (1) is assembled, install two formal cables (4) on its upward side and two temporary cables on its downward side;
    S2、起吊塔身(1)和上横担(2):确定好塔身(1)上的吊点,组装好专用吊具(7)后四点栓挂在吊点处,在塔身(1)的底部安装辅助轮车(5);吊装机(6)起钩将上横担(2)随塔身(1)同时吊装,当上横担(2)离开地面时,将装载机与塔身(1)底部软连接以控制辅助轮车(5)的移动速度;起吊机(6)继续吊装直到塔身(1)竖立至最大角度后,拆除辅助轮车(5),将塔身(1)底部与中心桩基础的预埋件连接;S2. Lifting tower body (1) and upper crossarm (2): determine the lifting point on the tower body (1), assemble the special spreader (7) and hang it at the suspension point at the four points, at the tower body ( 1) Install auxiliary wheels (5) at the bottom; hoisting machine (6) hook up and lift the upper crossbar (2) with the tower body (1) at the same time, when the upper crossbar (2) leaves the ground, connect the loader with The bottom of the tower body (1) is softly connected to control the moving speed of the auxiliary wheel vehicle (5); the hoisting machine (6) continues to be hoisted until the tower body (1) is erected to the maximum angle, then the auxiliary wheel vehicle (5) is removed and the tower body is removed (1) The bottom is connected with the embedded parts of the central pile foundation;
    S3、脱钩:将两根正式拉线(4)和两根临时拉线的下端分别连接至对应的拉线桩基础,将专用吊具(7)拆除,吊装机(6)脱钩;S3. Decoupling: Connect the lower ends of the two formal cables (4) and the two temporary cables to the corresponding cable pile foundations respectively, remove the special spreader (7), and the hoisting machine (6) to decouple;
    S4、安装拉线:吊装机(6)将两外两根正式拉线(4)和拉线连接构架掉装置塔身(1)的安装位置并固定,这两根正式拉线(4)的下端固定连接至相对应的拉线桩基础并拆除两根临时拉线;S4. Installation cable: The hoisting machine (6) fixes and fixes the two outer two official cables (4) and the cable connection frame off the installation position of the device tower (1), and the lower ends of these two official cables (4) are fixedly connected to Corresponding cable pile foundation and remove two temporary cables;
    S5、吊装下横担(3):在所述上横担(2)上安装定滑轮(8),在塔身(1)的中心基础处安置转向滑车(9),将牵引绳依次穿过转向滑车(9)和定滑轮(8)后绑扎下横担(3),所述下横担(3)的端部栓挂棕绳以控制调整吊装稳定性;当左右两侧的下横担(3)都就位后用螺栓紧固在塔身(1)上;S5. Hoisting lower crossarm (3): Install a fixed pulley (8) on the upper crossarm (2), place a steering block (9) at the center foundation of the tower body (1), and pass the traction rope in sequence Steering pulley (9) and fixed pulley (8) are tied to the lower crossarm (3), and the ends of the lower crossarm (3) are tied with brown rope to control and adjust the stability of the hoisting; (3) After they are in place, bolt them to the tower body (1);
    S6、调整塔身(1)安装精度:在正式拉线(4)的轴线方向以及垂线方向各架设一台经纬仪用以调整线张力。S6. Adjust the installation accuracy of the tower body (1): set up a theodolite in the axial direction and vertical direction of the formal wire (4) to adjust the wire tension.
  2. 根据权利要求1所述的输电线路干字型拉线塔吊装方法,其特征在于:上述步骤S2中,所述辅助轮车(5)的移动速度为2.5~3.3m/min,当辅助轮车(5)移动时所述吊装机(6)吊臂的转动速度为15~12~18°/min。The hoisting method for the transmission line dry-shaped cable-drawing tower according to claim 1, characterized in that: in the step S2, the moving speed of the auxiliary wheeled vehicle (5) is 2.5-3.3m / min, when the auxiliary wheeled vehicle ( 5) The rotation speed of the boom of the hoisting machine (6) when moving is 15-12 ° -18 ° / min.
  3. 根据权利要求1所述的输电线路干字型拉线塔吊装方法,其特征在于:上述步骤S5中,所述定滑轮(8)的安装点设置在距上横担(2)安装面的1/2~3/5处;The method for hoisting a dry-shaped cable-drawing tower of a transmission line according to claim 1, characterized in that in the above step S5, the installation point of the fixed pulley (8) is set at 1/1 of the installation surface of the upper crossarm (2) 2 ~ 3/5;
    所述牵引绳的动力端连接在装载机上,所述牵引绳在转向滑车(9)和定滑轮(8)之间拉紧后相对于水平面的倾角为75~85°。The power end of the traction rope is connected to the loader, and the inclination angle of the traction rope relative to the horizontal plane after being tightened between the steering block (9) and the fixed pulley (8) is 75-85 °.
  4. 根据权利要求1所述的输电线路干字型拉线塔吊装方法,其特征在于:上述步骤S2中,所述塔身(1)上的吊点高度比该塔身(1)的呼称高度高出0.1m。The hoisting method of a transmission line dry-type cable-drawing tower according to claim 1, characterized in that in the above step S2, the height of the lifting point on the tower body (1) is higher than the calling height of the tower body (1) 0.1m.
  5. 根据权利要求1所述的输电线路干字型拉线塔吊装方法,其特征在于:上述步骤S2中所述专用吊具(7)的组装方法为:首先在平衡梁(72)左右两端分别装配滑车(71),在塔身(1)的四个棱角上分别安装夹具(73);然后在每个滑车(71)的滑槽中缠上吊装用钢缆,每个所述钢 缆的两端头分别连接一个夹具(73);最后将所述平衡梁吊装在吊装机(6)的吊钩上。The hoisting method for the transmission line dry-shaped cable-pulling tower according to claim 1, characterized in that: the assembly method of the special spreader (7) in the step S2 is as follows: first, the left and right ends of the balance beam (72) are assembled respectively Pulleys (71), install fixtures (73) on the four corners of the tower body (1); then wrap hoisting steel cables in the chute of each pulley (71), two of each of the steel cables The ends are respectively connected with a clamp (73); finally, the balance beam is hoisted on the hook of the hoisting machine (6).
PCT/CN2018/113904 2018-11-05 2018-11-05 Hoisting method for two-level guyed transmission line tower WO2020093186A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62222993A (en) * 1986-03-22 1987-09-30 Sanwa Tekki Corp Simple crane for constructing steel tower and steel-tower construction method using said crane
CN102359303A (en) * 2011-10-31 2012-02-22 湖北省输变电工程公司 Extra-high voltage common circuit iron tower assembling method
CN103871093A (en) * 2012-12-07 2014-06-18 江苏省电力公司 Method for performing three-dimensional virtual simulation transmission line tower group tower leg hoisting process
CN103950841A (en) * 2014-04-16 2014-07-30 山东送变电工程公司 Auxiliary hoisting device for outer-side cross arms of crank arm of wine glass type ultrahigh-voltage transmission line iron tower
CN204897151U (en) * 2015-09-02 2015-12-23 山东电力建设第一工程公司 Transmission line tower integral hoisting specialized tool that acts as go -between

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62222993A (en) * 1986-03-22 1987-09-30 Sanwa Tekki Corp Simple crane for constructing steel tower and steel-tower construction method using said crane
CN102359303A (en) * 2011-10-31 2012-02-22 湖北省输变电工程公司 Extra-high voltage common circuit iron tower assembling method
CN103871093A (en) * 2012-12-07 2014-06-18 江苏省电力公司 Method for performing three-dimensional virtual simulation transmission line tower group tower leg hoisting process
CN103950841A (en) * 2014-04-16 2014-07-30 山东送变电工程公司 Auxiliary hoisting device for outer-side cross arms of crank arm of wine glass type ultrahigh-voltage transmission line iron tower
CN204897151U (en) * 2015-09-02 2015-12-23 山东电力建设第一工程公司 Transmission line tower integral hoisting specialized tool that acts as go -between

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