Xuzhou Heavy Machinery Co., Ltd.

Chinese Academy of Sciences

Jiangsu Kanion Pharmaceutical Co., Ltd.

Haiyan Zhang

Jian Li

Xiaodong Hu

Zhengde Zhang

Yu Chen Zhou

Hong Tao Liu

Hualiang Jiang

Kaixian Chen

Zenghai Shan

Yan Fu

Xican Tang

Yu Zhou

Quansheng Huang

Hong Liu

Caobin Lu

Jingwen Liang

Conglin Yuan

Rong Jin

The present invention relates to a telescopic device of single-cylinder latch type and a crane. The telescopic device of single-cylinder latch type is applied to a telescopic boom system and includes: a telescopic cylinder, for driving telescopic boom sections of the telescopic boom system to execute a telescopic action relative to a basic boom section; double boom pin structures, arranged on both sides of the tails of the telescopic boom sections to lock and unlock the telescopic boom sections; an boom pin pulling and plugging mechanism, arranged on the cylinder barrel of the telescopic cylinder to execute pulling and plugging operations on the double boom pin structures; and a cylinder pin structure and a cylinder pin cylinder, both arranged on the cylinder barrel of the telescopic cylinder and to lock and unlock the cylinder barrel of the telescopic cylinder and the telescopic boom sections. In the present invention, the double boom pin structures are arranged on both sides of the tails of the telescopic boom sections, compared with the existing upper boom pin solution, the double boom pin structures in the present invention are arranged on both sides of the telescopic boom sections, so that the stress is more uniform compared with a structure which is singly arranged on the upper side of a telescopic boom, and the influence of flexural deformation of a telescopic boom on the position of a pin hole and the stress of an boom pin is reduced.

Telescopic device of single-cylinder latch type and crane

A method and a system for recovering and utilizing crane operating energy and a crane includes converting by a first hydraulic power means hydraulic energy generated by a hydraulic actuator into mechanical energy of a transmission shaft; driving, by the transmission shaft, a second hydraulic power means to rotate so as to convert the mechanical energy of the transmission shaft into mechanical energy of the second hydraulic power means; filling, by the second hydraulic power means, pressurized oil into an accumulator so as to convert the mechanical energy of the second hydraulic power means into hydraulic energy for storage.

Method and system for recovering and utilizing operating energy of crane, and crane

The present invention relates to a combined counterweight hitching device and method thereof, and a counterweight mounting structure. The combined counterweight hitching device is mounted on a turntable tail framework, wherein the combined counterweight hitching device includes a turntable tail framework bottom plate, a lifting oil cylinder, a lifting oil cylinder fixing seat and a hitching driving mechanism, the turntable tail framework bottom plate is fixed on the turntable tail framework, the lifting oil cylinder fixing seat is arranged on the upper surface of the turntable tail framework bottom plate and is hinged with the turntable tail framework bottom plate, the lifting oil cylinder is fixed at one end of the lifting oil cylinder fixing seat, the one end distal to a point on which the turntable tail framework bottom plate is hinged with the lifting oil cylinder fixing seat, a hitching platform is mounted at a piston rod end of the lifting oil cylinder, and the hitching driving mechanism is connected with the lifting oil cylinder fixing seat, and drives the lifting oil cylinder fixing seat to make the hitching platform enter a hitching platform groove on the counterweight to complete a hitching operation. By adopting the combined counterweight hitching device and method, and the counterweight mounting structure provided by the present invention, the mounting and demounting of the combined counterweight are more convenient, and the mounting space is smaller.

Combined counterweight hitching device and method thereof, and counterweight mounting structure

The present invention relates to the field of pharmaceutical chemistry and pharmacotherapeutics, and in particular to compounds of general formula I, racemates, R-isomers, S-isomers, and pharmaceutically acceptable salts thereof and their mixtures, and the preparation methods thereof and a pharmaceutical composition containing the compounds and uses thereof as an acetylcholine esterase inhibitor. 

Fluorine substituted cyclic amine compounds and preparation methods, pharmaceutical compositions, and uses thereof

Eyelash curler

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Shanghai, China

Haiyan Zhang