The invention discloses a crane boom mechanism and a crane. The crane boom mechanism comprises a main boom and a vice boom. The vice boom is arranged at the tail end of the main boom in a swing mode. The crane boom mechanism further comprises an extensible component, a first winch and a second winch. One end of the extensible component is connected with the main boom, and the other end of the extensible component is connected with the vice boom. The extensible component is provided with a bolt used for locating. A rope of the first winch is used for drawing and releasing the vice boom. A rope of the second winch is connected with the bolt. The bolt is further provided with an elastic component. The elastic component exerts elastic force on the bolt, and the elastic force makes the bolt to penetrate into the extensible component. According to the crane boom mechanism and the crane, automatic adjustment of an angle between the main boom and the vice boom can be achieved. The crane boom mechanism is simple in structure, low in production cost, and applicable to the crane with a long vice boom structure.
Crane boom mechanism and crane
18.11.2015
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |