【正文】 d in many kinds of lifting parts, of which the largest number of technical requirements are strict and plicated rope specifications. Tower crane wire rope used in accordance with different functions are: lifting wire rope, rope luffing, jib ropes, balance the arm ropes, trolleys and other traction rope. Steel wire rope is characterized by: the entire root, high strength, but also the whole root sections, the size of the same intensity, light weight, able to withstand shock loads, flexible enough to winding into a disk, can be balanced at high speed movement, and no noise, wear and tear After the skin will produce a number of glitches, easy to detect and facilitate the timely disposal. Steel wire rope is usually a Unit diameter ~ thin twisted wire strand, and then twisted into rope by the Unit. Tower crane is used in interactive twist, is characterized by loose and difficult to reverse. On the strand crosssectional shapes, the highrise building construction with the tower crane to adopt the multistrand rope is not reversed, the most appropriate, such a wire rope consists of two layers posed of the same strand, two strand twisting in the opposite direction, using the principle of rotating torque balance twist crafted by 黃河科技學(xué)院畢業(yè)論文設(shè)計(jì) force does not occur when the free end of the reverse. Hoisting Tower Crane luffing rope and wire rope safety factor usually taken to be 5 ~ 6, car towing rope, and boom Cord of the safety factor of 3, tower crane lifts Lifting Sheng An allcoefficient of not less than 10. Steel wire rope safety factor is indispensable for security reserve factor, by virtue of this security must not be arbitrarily raised the rope reserves face the maximum allowable safe load. Because of the importance of steel wire rope, we must strengthen the prehensive inspection of wire rope on a regular basis, stored in dry closed surface, there are wooden floors or asphalt concrete warehouse floor to prevent corrosion, loading and unloading not to damage the surface of the pile when placed erect. Systematic lubrication of the rope can increase the service life. Luffing jib tower crane trolley is the level of essential parts. Change car set by the frame structure, steel wire rope, pulleys, line wheels, guide wheels, steel wire rope supporting the wheel, steel wire rope antiroll off, car towing rope tensioning device and the broken rope posed of insurance, etc.. For the talent level of boom (more than 50m in length) in amplitude with the car at the side of an overhaul hanging baskets may contain members of the maintenance and repair of all maintenance points to the repair and maintenance. Job finished, the roots boom car driven across the border to make baskets with luffing car separated from the structure fixed to the boom supports the dedicated office. 黃河科技學(xué)院畢業(yè)論文設(shè)計(jì) Other parts are wheels, slewing ring, hook and brakes and so on. (C), the tower crane working body The tower crane working body there are five: hoisting mechanism, varying from agencies, car towing agencies, institutions and carts Traveling rotary body (walking style tower crane). (D), the tower crane electrical equipment The main tower crane electrical equipment including: * Cable Reels Central collector ring。據(jù)初步統(tǒng)計(jì)，目前我國(guó)取得生產(chǎn)許可證的塔機(jī)生產(chǎn)廠達(dá) 400 余家，而 80 年代還不足 100 家。 我國(guó)塔式起重機(jī)行業(yè)的發(fā)展 50 年代初，我國(guó)塔機(jī)由仿制開始起步， 1954 年仿制東德建筑師Ⅰ型塔機(jī)； 60 年代自行設(shè)計(jì)制造了 25tm、 40tm、 60tm 幾種機(jī)型，多以動(dòng)臂式為主； 70 年代，隨著高層建筑的增多，對(duì)施工機(jī)械提出了新的要求，于是， 160tm 附著式、 45tm 內(nèi)爬式、 120tm 自升式等塔機(jī)相繼問(wèn)世；自上世紀(jì) 80 年代以來(lái)，我國(guó)塔機(jī)行業(yè)得到快速發(fā)展，尤其近幾年，塔機(jī)銷量持續(xù)攀高， 2021 年行業(yè)統(tǒng)計(jì)銷量 9738 臺(tái)， 2021 年成為世界上首個(gè)塔機(jī)年產(chǎn)量突破 10000 臺(tái)的國(guó)家。固定點(diǎn)應(yīng)設(shè)置在丁字墻和外墻轉(zhuǎn)角處 。 黃河科技學(xué)院畢業(yè)論文設(shè)計(jì) (八 )、自升式塔機(jī)的附著錨固 當(dāng)自升式塔機(jī)在達(dá)到其自由高度繼續(xù)向上頂升接高時(shí)，為了增強(qiáng)其穩(wěn)定系數(shù)保持起重能力，必須通過(guò)錨固附著于建筑結(jié)構(gòu)上。不得斜牽重物 。緊急安全開關(guān) 。超負(fù)荷保險(xiǎn)器(超載斷電裝置 )。使標(biāo)準(zhǔn)節(jié)就位，安裝聯(lián)接螺栓 。引 進(jìn)標(biāo)準(zhǔn)節(jié) 。頂升 。不同的是液壓馬達(dá)是用于旋轉(zhuǎn)運(yùn)動(dòng)，而液壓是用于直線運(yùn)動(dòng)。我國(guó)的塔機(jī)液壓頂升系統(tǒng)采用的液壓泵大都是 CBG 型齒輪泵， CB 不齒輪的 代號(hào)， 赫格隆 G 為固定的軸向間隙，工作壓力為 12。 屬于輔助電氣設(shè)備的有：照明燈、信號(hào)燈、電鈴等。操作電動(dòng)機(jī)用的電器，如：控制器、主令控制器、接觸器和繼電器。電纜卷筒 中央集電環(huán) 。作業(yè)完后，小車駛回臂架根部，使吊籃 與變幅小車脫鉤，固定在臂架結(jié)構(gòu)上的專設(shè)支座處。對(duì)鋼絲繩進(jìn)行系統(tǒng)潤(rùn) 滑可以提高使用壽命。就繩股截面形狀而言，高層建筑施工用塔機(jī)以采用多股不扭轉(zhuǎn)鋼絲繩最為適宜，此種鋼絲繩由兩層繩股組成同，兩層繩股捻制方向相反，采用旋轉(zhuǎn)力矩平衡的原理捻制而成，受力時(shí)自由端不發(fā)生扭轉(zhuǎn)。塔機(jī)用的鋼絲繩按功能不同有：起升鋼絲繩，變幅鋼絲繩，臂架拉繩，平衡臂拉繩，小車牽引繩等。平衡重可用鑄鐵或鋼筋混凝土制成：前者加工費(fèi)用高但迎風(fēng)面積小 。除平衡重外，還常在其尾部裝設(shè)起升機(jī)構(gòu)。當(dāng)爬梯高度超過(guò) 10m 時(shí)，梯子應(yīng)分段轉(zhuǎn)接，在轉(zhuǎn)接處加設(shè)一道休息平臺(tái)。塔身標(biāo)準(zhǔn)節(jié)采用的聯(lián)接方式，應(yīng)用最廣的是蓋板螺栓聯(lián)接和套柱螺栓聯(lián)接，其次是承插銷軸聯(lián)接和插板銷軸聯(lián)接。小車變幅臂架大都采用正三角形的截面。 起重臂構(gòu)造型式為小車變幅水平臂架，再往下分又有單吊點(diǎn)、雙吊點(diǎn)和起重臂與平衡臂連成一體的錘頭式小車變幅水平臂架。 5) 檢查行走輪與軌道接觸是否良好，夾軌鉗是否可靠。 塔式起重機(jī)的檢驗(yàn)產(chǎn)要點(diǎn) 1) 檢查金屬結(jié)構(gòu)情況特別是高強(qiáng)度的螺栓，它的連接表面應(yīng)清除灰塵、油漆、沒(méi)跡和銹蝕，并且使用力矩手或?qū)Ｓ冒馐?，按裝配技術(shù)要求擰緊。動(dòng)臂為水平式時(shí)，載重小車沿水平動(dòng)臂運(yùn)行變幅，變幅運(yùn)動(dòng)平衡，其動(dòng)臂較長(zhǎng)，但動(dòng)臂自重較大。按能否移動(dòng)又分為：走行式和固定式。根據(jù)參數(shù)要求，選用適當(dāng)模塊分別組成具有不同技術(shù)性能特征的塔機(jī)，以滿足施工的具體需求。 我國(guó)的塔機(jī)行業(yè)于 20 世紀(jì) 50 年代開始