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类型研究利于紧线应力与正确度的设计要求.doc

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    研究利于紧线应力与正确度的设计要求.doc
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    1、 研究利于紧线应力与正确度的设计要求一般条件下,张力放线段的长度应包括 15 个放线滑车的线路长度,宜为 58km。当选择牵张场地非常困难时,放线段内包括的放线滑轮数量不应超过 20 个;2、跨越特别重要的跨越物(如铁路、高速公路、110kV 及以上电力线等)宜适当缩短放线段长度,以确保安全和快带完成跨越架线任务;3、选用的张力场、牵引场应是地势平坦、交通方便的直线塔之间;放线段的起止塔宜选用上扬杆塔;4、应尽量按导线盘的导线长度的倍数选择放线流程段,以减少直线压接管数量;5、在以放线段作为紧线段进行架线时,选用张力放线段代表档距与所在耐张段代表档距接近的方案,以利于紧线和提高紧线应力与设计要

    2、求应力的正确度;6、非特殊情况,尽量不以耐张塔作为张力放线段起止塔。Under general conditions, the length of tension pay-off period should include 15 pay-off of a block, appropriate for 5 8 km. When choosing tension field is very difficult, pay-off segment includes pay-off pulley number should not be more than 20; 2, spanning across

    3、particularly important content (such as railway, highway, 110 kv and above power lines, etc.) should be appropriate to shorten the feeding http:/ http:/ http:/ http:/ length, to ensure the safety and fast take across lines of task; 3, choose the tension field, traction should be flat, convenient tra

    4、nsportation of the straight line between tower; Rose pay-off period appropriate chooses the start-stop tower tower; 4, should as far as possible according to the lead wire length is a multiple of choose the feeding process of plate, in order to reduce the line pressure to take over the number; 5, in

    5、 the feeding section as a tight line stringing, choose tension pay-off period on behalf of span and represent the resistance to a section where span nearly solutions, so tight line and improve the tight line of stress and stress the accuracy of the design requirements; 6, the special circumstances,

    6、try not to tension as tension pay-off period of start-stop towers. 1、牵张场地应满足牵引机、张力机能直接运达到位,且道路修补量不大;桥梁载重能满足承载力不小于 25t的要求。2、地形应平坦,能满足布置牵张设备、布置导线、http:/ http:/ http:/ http:/ 施工操作等要求。场地面积不应小于张力场 55m25m,牵引场 30m25m。3、如果需要直线转角塔(ZBJ 塔)作过轮临锚时,档内有重要交叉跨越或档内不允许导线接头时,牵、张机出口与邻塔导线悬挂点高差角大于 15时都不宜选作牵、张场。1, the tens

    7、ion field should be meet the tractors, shipped directly to a function of tension, and road repair quantity is not big; Bridge load can satisfy the requirement of bearing capacity of not less than 25 t. 2, terrain should be flat, can satisfy the layout with this equipment, layout wire, construction o

    8、peration requirements. Area of tension field should not be less than 55 m * 25 m, 30 m * 25 m traction field. 3, if you need linear (ZBJ tower) made in the round corner tower anchor, file contains important cross across or within the party is not allowed to wire connectors, led, zhang machine export

    9、 and adjacent tower wire suspension point elevation difference Angle 15 is unfavorable choose as a lead, a field. http:/ http:/ http:/ http:/ (二)张力展放牵引绳时,牵引场应作如下工作:1 、将牵引绳盘上的钢丝绳(准 i24 防捻钢丝绳)通过转向滑轮由上方进入小张力机轮子,绕张力轮 6 圈后从上方引出;2、用 3t 旋转连接器将导引绳(准 i16 防捻钢丝绳)与牵引绳连接;3、张力展放牵引绳时,张力场应作如下工作:(1)将导引绳前端从 对旋局部通风机小牵

    10、引机上方引入卷扬轮,绕卷扬轮 6 圈后由上方引至导引绳盘;(2)靠近小牵机、张机的进出线右侧,在导引绳、牵引绳上安装接地钢轮滑车,作好保安接地。(2) with the traction rope, tension traction field should be done following work: 1, the traction rope plate of the steel wire rope (must) i24 anti twist wire rope through the steering wheel into the small tension machine by the

    11、 above wheels, winding tension wheel after 6 circle from the top; 2, with 3 t rotary connector will guide rope (must) i16 anti twist wire rope connected to the tow rope; 3 with the traction rope, tension, the tension field work should be done is as follows: (1) introduce the guide rope above the fro

    12、nt small tractor hoist roller, winding winding wheel after http:/ http:/ http:/ http:/ six laps to guided by the above line plate; (2) close to the outlet and inlet line of small stretch machine, a machine on the right, in guiding the grounding block of steel rope, traction rope, protective earth. (

    13、一)牵引板翻转的预防措施及处理办法(a) pulling plate rollover prevention measures and treatment method 与牵引板连接的旋转连接器必须转动灵活,零件不得破损;在张力机出口处的牵引板必须保持水平状态,与张力机调整各子导线张力一致;平衡锤的悬挂方式必须正确,重量必须符合规定。牵引板临近转角塔的放线滑车时,应调整其倾斜度与滑车倾斜度一致;牵引板在牵引过程中应监视其水平状态,发现 乳化液泵站异常应向指挥报告,便于及时调整。发生牵引板翻转故障应依照如下方法进行处理:1、命令牵场、张场进行停机; 查明原因,查清反转http:/ http:/

    14、http:/ http:/ 方向及子导线松紧程度;调整子导线张力,从低张力的子导线逐个调整;2、各子导线张力基本平衡后,登上牵引板临近的靠后侧一基塔上翻转导线使牵引板恢复原来的水平状态;3、若无法翻转导线时,可慢速牵引,使牵引板到达其临近的前塔放线滑车处,登塔翻转牵引板,使其恢复正常。The rotation of the connected to the drawing board connector must be flexible rotation, parts shall not be damaged; Under the guidance of the tension machine

    15、 outlet plate must keep horizontality, consistent with the tension machine adjust each conductor; Balance weight suspension way must be correct, the weight must conform to the rules. Drawing board near the corner tower steel block, should adjust its tilt and tilt block is consistent; Drawing board i

    16、n the process of traction should monitor the level of state, found that abnormal shall be reported to the command, is easy to adjust in a timely manner. Drawing board flip failure should be dealt with in accordance with the following methods: 1, the stop command led field, a field; Find out reason,

    17、find out and reverse direction and lead tightness; Adjust the wire tension, changed from low http:/ http:/ http:/ http:/ tension of wires one by one; 2, the wire tension is balanced basically, the traction near plate on the back of a fundamental turn tower wire drawing board returned to original sta

    18、te level; 3, if cant flip a wire, can slow traction, make the drawing board to the neighboring tower before pay-off block, climb tower reverse drawing board, so that it is back to normal. (二)绳或线跳槽的预防措施及处理办法(2) the rope or line preventive measures and treatment methods of job-hopping 1、直线塔上发生绳或线跳槽的处理

    19、办法是先停机后http:/ http:/ http:/ http:/ 处理:(1)若只跳槽,并无卡死,用双钩或手搬葫芦将跳槽的绳或线提起,使其恢复原位;(2)若跳槽又卡死,先令牵引机倒抽,调整瓷瓶串基本垂直后,再用双钩或手扳葫芦将跳槽的绳或线提起,使其恢复原位。1, linear tower jump rope or line method is to first stop after processing: (1) to change jobs, if only not jammed, moving hoist with double hook or hand lift jump rope

    20、or line, make its recovery in situ; (2) if a job-hopping and jammed, shilling tractor gasp, adjust the basic vertical after the porcelain insulator string, then use the double hook or lever hoist lift jump rope or line, make its restore in situ. 2、转角塔发生绳或线跳槽的措施:( 1)放线滑车的悬挂方式应按规定悬挂,如是双滑车要用角钢连接成一体;放线滑

    21、车采用单根调节绳时,应使两滑车均衡受力,采用双根尾部调节时,升降速度要一致;(2)牵引板进入放线滑车前,要调整 FBD 轴流局部通风机牵引板的倾斜角与http:/ http:/ http:/ http:/ 滑车倾斜角一致;牵引板靠近放线滑车时,令牵机、张机停机,登塔用麻绳一端绑住平衡锤的尾部,另一端拉到横担上。收紧麻绳,使平衡锤悬空,再慢速牵引,牵引板及平衡锤穿滑车后,停止牵引,解下麻绳,继续放线施工;(3)开始牵引、放线张力很小时,导线在张力轮的槽口及牵引绳在牵引轮的槽口发生频繁跳槽时,说明进(出)线方向和位置不正确,应查明原因进行处理。2, corner tower rope or lin

    22、e move measures: (1) pay-off suspension, the pensile kind of the block should be according to stipulations, double block with Angle steel connection into a whole; Pay-off block using single adjusting rope, should make the two block balanced force, adopts double root when the tail adjustment, lifting

    23、 speed should be consistent; (2) drawing board before entering the pay-off block, to adjust the pulling plate Angle and block Angle is consistent; Drawing board near the pay-off block, to stretch machine, a machine downtime, climb tower with hemp rope tied at one end of the end of the balance weight

    24、, on the other end to cross arm. Tighten hemp rope, make balance weight hung up, and then slow traction, pulling board and balance weight after wear block, stop pulling off http:/ http:/ http:/ http:/ hemp rope, continue to pay-off construction; (3) start traction, pay-off tension is very small, con

    25、ductor tension wheel groove and the traction rope in traction wheel firmly, frequent job-hopping, instructions into (out of) line direction and the position is not correct, should find out the reason for processing. 3、同相双瓷瓶串互相碰撞的预防措施和处理办法:(1)同相双瓷瓶串互相碰撞的预防措施是:在悬挂瓷瓶时,要将一串瓷瓶串用铁丝提吊,使快速升柱器两串瓷瓶串离开一定距离;(2)

    26、发生瓷瓶碰坏事故后,应停机,查明原因后登塔处理,防止再次碰坏。对已碰坏的瓷瓶可待到附件安装时进行更换。3, in phase double porcelain insulator string of collision prevention measures and treatment method: (1) in phase double porcelain insulator string of collision prevention measures is: when suspension porcelain insulator, to a http:/ http:/ http:/ h

    27、ttp:/ string of porcelain insulator string hanging wire, make the two series of porcelain insulator string from a certain distance; (2) after porcelain touch bad accident, should stop, find out the reason after tower processing, to prevent damaged again. To have damaged porcelain can be change until

    28、 the attachment installation. (一)展放导线前,牵、张场应作如下工作:1 、牵引场把已锚固在牵引场的牵引绳尾端穿绕牵引机的牵引轮后,将其尾端固定于牵引绳盘上;2、牵引绳引入牵引轮时应由内向外上进上出或上进下出。当上进上出时,牵引绳在牵引轮上绕 7 圈;当上进下出时,牵引绳在牵引轮上绕6.5 圈;3、在张力场,将 4 条准 i16 的尼龙绳分别缠绕在张力机制张力轮槽内,缠绕方向与导线外层捻回方向一致,上进上出;在张力轮槽内绕 4 圈后,绳头的一端在张力机进线侧,另一端在出线侧;4、将第一组四轴导线的线头拉出盘外,截除散股部分后,将导线头套入单辨猪笼套并收紧,并在距尾

    29、端 2050mm 处用 10 号铁线绑扎大于100mm,并用黑胶布将 齐绑裹;5、将导线头上的猪笼套与张力机进线侧的尼龙绳头连接。启动张力机,人力将导线头引出,要求导线引出张力机 45m;6、解开尼龙绳头,将 4 根子导线与地面牵引板连接;7、待 4 根子导线都与http:/ http:/ http:/ http:/ 牵引板连接后,启动张力机,慢慢先卷 1、4 线后卷 2、3 线使牵引板离开地面,同步人力倒转线盘,并调平各子导线,确保牵引板处于水平状态。然后拆除牵引绳上的卡线器;8、牵引绳上、张力机出口子导线上分别悬挂钢质接地滑车。Before (a) with the wire, and a

    30、 field should be done following work: 1, traction field has been anchored in the field of the traction rope wear around the tractor traction wheel after the end of the tail is fixed on the traction rope plate; 2, traction rope into the traction wheel should be from the inside-out or top down out on

    31、the progresses. When top on out, traction rope around 7 rounds in traction wheel; When top down out, traction rope on the traction wheel around 6.5 times; 3, in the tension field, the nylon rope of four prospective i16 separately wrapped around the tension mechanism wheel groove, winding direction a

    32、nd outer wires twist in the same direction, top in out; After the tension pulley groove around four laps, one end of the lanyard in lateral tension machine into line, the other end at the outlet side; 4, will be the first group of four axis wire thread to pull out of this, after the amputated part l

    33、oose http:/ http:/ http:/ http:/ strands, wire head into single distinguishes the pitcher set and tightened, and the use of 10, 20 50 mm from the end wire bundle is larger than 100 mm, bound together with black tape to wrap; 5, wire head pig cage cover with the nylon rope tension machine into the li

    34、ne side connection. Start the tension machine, human will lead wire head, requirements wire drawn tension machine 4 5 m; 6, loose the nylon rope, connect 4 root wire drawing board with the ground; 7, after waiting for 4 root wire are connected to the drawing board, start the tension machine, slowly

    35、with volume after 1, 4, line 2, 3, line drawing plate off the ground, synchronized human inverted wire coil, and leveling each wire, to ensure the level of the drawing board. Then removed traction wire rope card; 8, traction rope, tension machine export wires hanging steel grounding block respective

    36、ly. (二)更换牵引绳盘操作程序:1 、当牵 引绳头(8t 抗弯http:/ http:/ http:/ http:/ 连接器)进入牵引绳盘 34 圈后,应停止牵引;在牵引机与绳盘之间有卡线器锚固牵引绳,拆除刚入绳盘的抗弯连接器,将满盘卸下,换上空盘;2、将牵引绳头缠固于新装的空盘上,转动绳盘,收紧牵引绳;拆除牵引绳上临锚的卡线器,通知继续进行牵引。(2) the traction rope tray procedures: 1, when traction rope head bending the connector (8 t) into the traction rope plate

    37、after 3 4 laps, should stop traction; Between tractor and rope plate has a card line anchor traction rope, demolished just into rope plate bending the connector, remove the plateful, in above the plate; 2, the traction rope wound onto the empty plate fixation in new clothes, turn the rope disc, tigh

    38、ter leash); Demolition of traction rope anchor line card in the device and inform to continue their traction. (三)更换导线盘操作程序:1 、当导线盘 上的导线剩下最后一层时,应慢速牵引,当盘上导线剩余 35 圈时,http:/ http:/ http:/ http:/ 应停止牵引;2、用准 i16 尼龙绳在张力机后侧通过卡线将子导线临时锚固;倒出盘上余线,卸下空盘,换上新导线盘;3、用双辩猪笼套将前后导线端头对接插入,并用 12号铁线绑扎连接器尾部,后将铁线绑扎处用黑胶布绑裹;4、启

    39、动张力机,将导线连接处引出张力机 35m 停机,临锚牵引绳,再启动张力机松出子导线,使连接点落下到地面帆布上,进行压接施工。压接完毕后,装上护线管后再通知牵场、张场继续进行放线施工。(3) replace the wire disc operating procedure: 1, when the conductor plate, wire the rest of the last layer, should slow traction, when plate wire the remaining 3 5 laps, should stop traction; 2, using i16 nyl

    40、on rope tension machine in the back by a card line will lead temporary anchorage; Pour acquired more than on the line, unloaded empty disk, put on the new conductor plate; 3, argue with double pig cage set of insert the wire end joint before and after, with 12 wire binding connector at the rear, the

    41、 wire tie with black tape tied up; 4, start the tension machine, will wire joint lead to tension machine downtime, 3 5 m anchor in the traction rope, tension machine restart with a conductor, the points dropped to the ground, on the canvas for pressure http:/ http:/ http:/ http:/ welding construction. After crimping, mount convenient after the notification led field, a field to continue taking in construction.

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