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1. (WO2018036181) LATTICE BOOM STRUCTURE AND CRANE

Pub. No.:    WO/2018/036181    International Application No.:    PCT/CN2017/081276
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Fri Apr 21 01:59:59 CEST 2017
IPC: B66C 23/66
B66C 23/82
Applicants: XUZHOU HEAVY MACHINERY CO., LTD.
徐州重型机械有限公司
Inventors: LU, Chuan
陆川
CAO, Lifeng
曹立峰
CHEN, Zhican
陈志灿
ZHANG, Pinghai
张平海
GU, Sisheng
谷思生
FU, Yuqin
付玉琴
LI, Changqing
李长青
YU, Jingli
于敬利
Title: LATTICE BOOM STRUCTURE AND CRANE
Abstract:
Disclosed in the present invention are a lattice boom structure and a crane. The lattice boom structure comprises a connecting frame (1), a rotating frame (2), and a variable amplitude oil cylinder (3). The connecting frame (1) is rotationally connected to the rotating frame (2). One end of the variable amplitude oil cylinder (3) is rotationally connected to the connecting frame (1), the other end of the variable amplitude oil cylinder (3) is rotationally connected to the rotating frame (2), and the variable amplitude oil cylinder (3) bears a pressure. By means of the structure form of the pressure cylinder type lattice boom, the structures of the rotating frame and the connecting frame are changed, so that the variable amplitude oil cylinder can be disposed at the bottom and bears a pressure and does not bear a tensile force, and accordingly potential safety hazards caused by internal leakage of a hydraulic oil cylinder are avoided.