a-frame crane

基本解釋

Normally, loader crane dealers custom-fit a frame of steel bar on top of a truck chassis to mount the crane.
通常，裝載起重機(jī)經(jīng)銷(xiāo)商隨俗地在卡車(chē)底盤(pán)頂部設(shè)置鐵桿梯架登上起重機(jī)。
iask.sina.com.cn
In a crawler crane of the present invention, a plurality of winches 11-14 for winding wire ropes are disposed on a rotating frame 6 of an upper rotating body 3 in a row in a plane view.
本發(fā)明的履帶式起重機(jī)在上部旋轉(zhuǎn)體（3）的旋轉(zhuǎn)框架（6）上，在俯視圖中前后排成一列地設(shè)置有卷繞作業(yè)用繩索的多個(gè)絞盤(pán)（11～ 14）。
ip.com
Floating crane structure mainly include boom, amplitude varying wire rope, tied back wire rope, truss frame, A-frame, counterweight box, rotating machinery base, and rotary bearing structure.
浮吊結(jié)構(gòu)包括臂架、變幅鋼絲繩、系固鋼絲繩、桁框架、人字架、配重箱、回轉(zhuǎn)底盤(pán)總成及回轉(zhuǎn)支承等部件。