The invention discloses a lower support structure of a tower crane. The lower support structure comprises a box (3) formed by cover plates and rib plates, lower support main chords (2) welded to the periphery of the box (3) and used for connecting standard sections and lower support connecting lug bases (1) welded to the lower support main chords (2) and used for connecting a climbing frame, and the lower half parts of the lower support main chords (2) are fixed to the box (3) through the rib plates. The lower support structure further comprises steel angle connecting rods used for connecting the lower support main chords (2). The steel angle connecting rods are additionally arranged between the lower support main chords and used for connection, a stable structure is formed between the lower support main chords, the occurrence probability that main chords deform severely in the welding and transportation process and consequently installation is difficult is lowered, normal installation can be guaranteed, and installation efficiency of the tower crane is improved.
Lower support structure of tower crane
2015-04-22
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |
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