The invention discloses a crane underframe which comprises a revolving platform, a base, a revolving support which is arranged between the revolving platform and the base, supporting legs which are fixed on the base, and traveling wheels which are arranged on the end parts of the supporting legs, wherein the outer ring of the revolving support is provided with teeth; a revolving locking mechanism of the underframe comprises a U-shaped fork, a pull rod, a locking handle and a limiting blocking block; the revolving locking mechanism and the revolving platform can form a four-rod mechanism comprising a moving pair; the limiting blocking block is provided with ratchets; the locking handle is internally provided with a pressing rod, and pawls matched with the ratchets; each supporting leg is composed of a crossed beam and a stretching leg which are made from rectangular-section-type square pipes; the crossed beams are fixedly connected with the base; the stretching legs are connected with the crossed beams in an inserting manner and then are fixed by tightening bolts. The crane underframe is simple in structure, safe, reliable, high in environment adaptability and convenient to dismount, mount and transport.
Crane underframe
2015-09-02
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |
Ballast type underframe of tower crane and foundation structure of ballast type underframe
European Patent Office | 2023
|