Referred tower crane tower crane . According to their different tower types , the following classification.
( 1 ) by structure type ① fixed tower crane : By connecting piece to the tower base frame fixed to the foundation or structure , conduct tower crane lifting operations. ② mobile tower cranes : a running device , you can walk the tower crane . Depending on the operation of the device , can be divided into rail , tire type , crawler .
Set in the upper part of the tower slewing tower cranes : ( 2 ) Type of ① by turning the rotary tower cranes . Can be divided into tower cap rotary , rotary tower , on a rotating platform type , turn -column form . ② slewing tower cranes : slewing ring provided at the bottom of the tower , the tower rotates relative to the chassis tower cranes .
( 3 ) according to the method of erection of non-self- erecting tower crane ① : rely on other lifting equipment to be assembled into a whole set of tower cranes . ② self- erecting tower crane : relying on its own power plant and transportation agencies to achieve the status of tower cranes and working conditions of mutual conversion.
( 4 ) by way of luffing tower crane trolley ① : luffing tower crane lifting trolley carried along the boom operation. ② Boom luffing tower crane : luffing jib for the pitching motion of the tower crane . ③ folding jib tower cranes : crane operations as needed , you can bend the tower crane boom . It can also have the performance and trolley boom luffing of .