固定(ding)式(shi)剪(jian)(jian)(jian)叉(cha)升(sheng)(sheng)降(jiang)(jiang)平(ping)臺通常由(you)三(san)部(bu)分(fen)組成(cheng)：平(ping)臺、剪(jian)(jian)(jian)式(shi)升(sheng)(sheng)降(jiang)(jiang)機構(gou)和底座。平(ping)臺位于(yu)頂部(bu)，主(zhu)要承(cheng)受載荷，供工人(ren)進行各種高(gao)空(kong)作業(ye)。　　固定(ding)式(shi)剪(jian)(jian)(jian)叉(cha)升(sheng)(sheng)降(jiang)(jiang)平(ping)臺是升(sheng)(sheng)降(jiang)(jiang)平(ping)臺的關(guan)鍵(jian)部(bu)件。不同(tong)的升(sheng)(sheng)降(jiang)(jiang)平(ping)臺都有(you)自己的剪(jian)(jian)(jian)刀(dao)升(sheng)(sheng)降(jiang)(jiang)機構(gou)。從低(di)起(qi)(qi)升(sheng)(sheng)到高(gao)起(qi)(qi)升(sheng)(sheng)，剪(jian)(jian)(jian)桿數量增加，液壓缸(gang)的布置形式(shi)也不同(tong)。固定(ding)式(shi)剪(jian)(jian)(jian)叉(cha)升(sheng)(sheng)降(jiang)(jiang)平(ping)臺機構(gou)的臂(bei)數和液壓缸(gang)的布置形式(shi)取決于(yu)升(sheng)(sheng)降(jiang)(jiang)高(gao)度。　　底座位于(yu)底部(bu)，有(you)支腿、輪(lun)胎、油箱和其他部(bu)件連接在上面。　　位移放大(da)　　固定(ding)式(shi)剪(jian)(jian)(jian)