水電站啟閉機(jī) hydropower station crane 

移動(dòng)式啟閉機(jī)類(lèi)型繁多，主要有：
　�、侔吹蹙咭苿�(dòng)的方向分為單向移動(dòng)啟閉機(jī)和雙向移動(dòng)啟閉機(jī)。前者吊具僅沿壩面線左右移動(dòng)；后者不僅沿壩軸線方向左右移動(dòng)，而且也能上、下游方向移動(dòng)。
　　單向移動(dòng)式啟閉機(jī)的主提升機(jī)構(gòu)直接緊固在臺(tái)車(chē)或門(mén)形構(gòu)架的上平面上；雙向移動(dòng)式啟閉機(jī)的主提升機(jī)構(gòu)設(shè)置在臺(tái)車(chē)或門(mén)形構(gòu)架上平面的小車(chē)上，小車(chē)沿軌道行走的方向與臺(tái)車(chē)或門(mén)形構(gòu)架的移動(dòng)方向成垂直。通常也稱(chēng)雙向移動(dòng)式的臺(tái)車(chē)或門(mén)形構(gòu)架為大車(chē)架。
　�、诎匆苿�(dòng)架狀況分為臺(tái)車(chē)移動(dòng)式啟閉機(jī)與門(mén)形移動(dòng)式啟閉機(jī)（亦稱(chēng)門(mén)式啟閉機(jī)、門(mén)式起重機(jī)）。前者主提升機(jī)構(gòu)設(shè)置在底部裝行走車(chē)輪的平面構(gòu)架式臺(tái)車(chē)上；后者的啟閉機(jī)主提升機(jī)構(gòu)設(shè)置在裝有行走車(chē)輪的門(mén)形構(gòu)架上。
　　臺(tái)車(chē)式移動(dòng)啟閉機(jī)通常行走在閘門(mén)門(mén)槽頂部平面或平面以上的混凝土排架上，門(mén)式移動(dòng)啟閉機(jī)僅行走在閘門(mén)門(mén)槽頂部平面上。門(mén)式啟閉機(jī)門(mén)架腿上有時(shí)也設(shè)回轉(zhuǎn)式懸臂吊鉤以便起吊其他設(shè)備，從而構(gòu)成多用途門(mén)形移動(dòng)式啟閉機(jī)中國(guó)已生產(chǎn)的移動(dòng)式啟閉機(jī),主提升吊具啟門(mén)力達(dá)5000kN，升程為140m。蘇聯(lián)薩揚(yáng)舒申斯克水電站移動(dòng)式啟閉機(jī)啟門(mén)力達(dá)7100kN,升程為17.5m。

Mobile crane type is various, mainly include:

(1) According to the spreader moving direction,divided into one-way mobile hoist and two-way mobile hoist.The former spreader move only along the dam surface line around;the latter not only moving around along the dam axis direction but also upstream or downstream.
    One-way mobile hoist main hoisting mechanism of fastening on the trolley or portal frame directly in the plane;two-way mobile hoist main hoisting mechanism set up in the trolley of car or portal frame, the direction of car along the orbit is vertical to the moving direction of trolley or the portal frame.Usually also call two-way mobile trolley or portal frame as the big frame.
(2) According to the condition of moving frame,divided into car travelling crane or door form mobile crane (also called gantry hoist, gantry crane).The former main hoisting mechanism set in the bottom of the walking wheel of plane framed;the latter main hoisting set in the portal frame equipped with moving wheel.
    Pallet car mobile hoist usually walk on top of gate slot plane or the concrete bent on the top of plane,gantry mobile hoist only walk on top of gate slot plane.Sometimes the leg of gantry mobile hoist set rotary cantilever hook to hang other equipment which constitute a multi-purpose portal mobile hoist. The mobile crane China produced, the main promotion spreader 5000 kn, lifting height 140 m.Soviet SaYangShu sessions, hydropower station, mobile hoist 7100 kn, lifting height 17.5 m.