Derrick Crane
桅杆式起重机
钻井台
人字起重机
桅杆起重机
桥面吊机
动臂起重机
三星架
钻台
转臂起重机
斜撑式起重机
travelling derrick crane
gantry crane with jib crane
gantry crane with level luffing crane
overhead crane and gantry crane
overhead crane or gantry crane
single-rail crane (mono-rail crane)