【導(dǎo)讀】動(dòng)臂裝在高聳塔身上部的旋轉(zhuǎn)起重機(jī)。作業(yè)空間大，主要用于房屋建筑施工中物料的垂。直和水平輸送及建筑構(gòu)件的安裝。由金屬結(jié)構(gòu)、工作機(jī)構(gòu)和電氣系統(tǒng)三部分組成。包括塔身、動(dòng)臂和底座等。電氣系統(tǒng)包括電動(dòng)。機(jī)、控制器、配電柜、連接線路、信號(hào)及照明裝置等。塔式起重機(jī)簡(jiǎn)稱塔機(jī)，亦稱塔吊，起源于西歐。據(jù)記載，第一項(xiàng)有關(guān)建筑用塔機(jī)專利頒。1905年出現(xiàn)了塔身固定的裝有臂架的起重機(jī)，1923年制成了近代塔機(jī)的原。型樣機(jī)，同年出現(xiàn)第一臺(tái)比較完整的近代塔機(jī)。1930年當(dāng)時(shí)德國(guó)已開(kāi)始批量生產(chǎn)塔機(jī)，并。1941年，有關(guān)塔機(jī)的德國(guó)工業(yè)標(biāo)準(zhǔn)DIN8770公布。該標(biāo)準(zhǔn)規(guī)定以吊載。塔式起重機(jī)的動(dòng)臂形式分水平式和壓桿式兩種。動(dòng)臂仰俯變幅，變幅運(yùn)動(dòng)不如水平式平穩(wěn)，但其自重較小。關(guān)系，而平衡臂長(zhǎng)度與起重臂長(zhǎng)度之間又存在一定比例關(guān)系。產(chǎn)生許多毛刺，易于發(fā)現(xiàn)并便于及時(shí)處置。數(shù)取為3,塔機(jī)電梯升降繩安全系數(shù)不得小于10。整套變幅小車(chē)由車(chē)架結(jié)構(gòu)、鋼絲繩、滑輪、行輪、

　　

【正文】 pump, CB does not gear code, Hagglunds G for a fixed axial gap, the working pressure of 12. 5 ~ 16MPa. Hydraulic cylinder is a hydraulic system of the implementation of the ponents. From the functional point of view, hydraulic cylinders and hydraulic motors of the same pressure of working oil flow can be transformed into mechanical energy conversion device. The difference is that hydraulic motor is used for rotary movement, while the hydraulic pressure is used for linear motion. Then a high hydraulic jacking the whole process is: * Mobile balance weight, so that the tower is not unbalanced moment, lifting arm in place, towards the same direction with the introduction of the track and be locked, lifting a standard tower section placed in a small car ferry。 * Jacking。 * Pin in place and locked, when you mention piston rod, in the set of planes in the formation of the introduction of space。 * The introduction of standard knots。 * Standard section brought the introduction of car ferry。 黃河科技學(xué)院畢業(yè)論文設(shè)計(jì) ? the standard section in place, install the bolts。 * Slightly upward jacking, pull out the lock position to make the transition Festival and has received high tower together into one solid. (6), tower crane safety devices Safety device is essential for the tower crane, one of the key equipment, can be divided into: limit switch (stopper)。 overload Insurance devices (overload power plant)。 buffer only block devices。 steel wire rope antioff device。 anemometer 。 emergency safety switch。 security audio signal. Limit switches according to the functions are: hook travel limit switch, rotary limit switches, trolley travel limit switch, carts travel limit switch. (G), the provisions of the tower crane antitipping Nonoverloading operation。 not oblique pull heavy loads。 not allowed to suddenly emergency braking。 prohibit running wind lifting operations。 working class, must be cliprail clamping device to prevent the wind blowing the tower crane slipped out of orbit. (8), since the ltype tower crane attachment anchor When the selfclimbing tower crane in achieving a high degree of their freedom to continue to pick up highjacking, in order to enhance its stability factor to keep lifting capacity, they must anchor attached to the building structure. Attachment level, the total construction and constructionlayer height, tower crane and tower structures, freedom tower height. In general, set the two anchor dwell already meet their 黃河科技學(xué)院畢業(yè)論文設(shè)計(jì) needs. Attachment points on the building options to note: two fixedpoint distance between the reinforcement attachment appropriate。 fixed point should be set at the Twalls and wall corners。 right frame structure, attachment points for appropriate column in close proximity to the roots of cloth。 arranged near the floor for the benefit and installation of power transmission. To ensure the safe use of tower crane and access to a long life, it must be lubricated, troubleshooting, regular maintenance and repair parts. The tower crane industry in the development of The early 50s, my tower crane from the imitation started, in 1954 East German architects generic type Ⅰ tower crane。 60 years designed and manufactured 25tm, 40tm, 60tm several models, and many more moving the main arm。 70 years With the increase in highrise buildings, the construction machinery made new demands, so, 160tm attachment style, 45tm in climbing, 120tm jackup tower crane have been brought forth and so on。 80 years since the last century, since the tower crane industry in China to be rapid development, especially in recent years, the tower crane sales continued to climb in 2021, industry statistics sales of 9738 units in 2021 to bee the world39。s first tower crane annual output of 10,000 units a breakthrough state. In 2021, due to the role of macroeconomic regulation and control as well as the crane industry, the restructuring of production and sales of tower crane has dropped slightly, 2021,2021, in 黃河科技學(xué)院畢業(yè)論文設(shè)計(jì) the strong economic growth driven by China39。s resumption of the tower crane production and sales growth in 2021, sales have been more than 20,000 units. Because the industry statistics which only a couple dozen manufacturers sales, certainly far more than industrywide sales figures. Needless to say, China has bee the world39。s civilian power production of the tower crane, tower crane is the world39。s major demand markets. According to preliminary statistics, China to obtain production licenses tower crane production plant more than 400, but 80 years less than 100.