Xuzhou Heavy Machinery Co., Ltd.

Quan Dong

Zenghai Shan

Yongjian Deng

Mengbing Zhu

Shuai Wang

Chenglin Xiao

Xin Zhang

Xiaodong Hu

Zhengde Zhang

Xiaojie Du

Xiaohui Wang

Feng Zhu

Weichao Zhong

Hongshu Guo

Xiaoqiang Xiang

Jianying Han

Yuchun Zhao

Yunbo Xiao

Zhende Zhang

Jie Kong

Donghong Liu

Jing Zhao

The present disclosure relates to the technical field of cranes, and in particular to a crane hydraulic control system and a crane. The crane hydraulic control system of the present disclosure includes a prime mover, an execution control mechanism, a hydraulic baking device, a running energy recycling device and an operation energy recycling device. By means of cooperation among the operation energy recycling device, the energy recovery device and the hydraulic energy conversion device, kinetic energy in a driving braking process of the crane and the potential energy in a load lowering process are respectively converted into hydraulic energy for recovery, storage and reuse, therefore, the present disclosure can achieve the recovery of the superstructure energy and the lower vehicle energy of the crane so as to effectively reduce the energy waste.

Crane hydraulic control system and crane

The present invention discloses a power transmission control method and device for a crane and the crane. The method includes: setting the maximum working displacement of a secondary element corresponding to each gear of the crane; determining the current gear state and specific gear of the crane; determining the working mode of the secondary element from the gear state, and setting the maximum allowable displacement of the secondary element as the maximum working displacement corresponding to the specific gear.

Power transmission control method and device for crane and crane

The invention relates to a cylinder head body, a single cylinder bolt system and a crane, wherein, the cylinder head body comprises at least two branch bodies of cylinder head body, a cooperative positioning structure and a fixed connection structure are provided between two adjacent branch bodies of cylinder head body of the at least two branch bodies of cylinder head body, the branch body of cylinder head body has a cylindrical branch body structure, the cylindrical branch body structures of the at least two branch bodies of cylinder head body are cooperatively positioned by means of the cooperative positioning structure and are detachably connected by means of the fixed connection structure to form a barrel. The cylinder head body is composed of at least two branch bodies of cylinder head body in a dismountable way, which are cooperatively positioned and detachably connected by the cooperative positioning structure and the fixed connection structure, respectively, such that the cylinder head body may be dismounted into branch body structures during assembling, assembling manner thereof is not restricted by traditional assembling sequence, thereby improving the assembling efficiency and production efficiency. Moreover, the branch body structure of the cylinder had body is easy to dismount and maintain, which saves maintenance cost.

Cylinder head body, single cylinder bolt system and crane

The present application relates to a mobile counterweight mechanism of a hoisting machine, comprising a support portion, a drive portion and a counterweight which is articulated to said support portion by means of a first articulation portion, said drive portion connected between said support portion and the counterweight so that said counterweight turns over outwards about said first articulation portion relative to a center of rotation of said hoisting machine, so as to increase a distance between a center of gravity of said counterweight and a center of rotation of said hoisting machine. The present application also relates to a hoisting machine. The present application raises a movement distance of a mobile counterweight and improves the overall stability of a hoisting machine in a turnover manner.

Mobile counterweight mechanism of a hoisting machine as well as a hoisting machine

The present invention relates to a single-cylinder plug pin type telescopic arm, a crane and a telescopic method thereof. The single-cylinder plug pin type telescopic arm includes a basic arm and at least one telescopic arm sleeved in the basic arm, wherein coaxial center holes are formed in the tails of the telescopic arms, and a telescopic oil cylinder is arranged in the center holes; the telescopic oil cylinder includes a cylinder rod and a cylinder barrel, at least two cylinder heads are fixedly sleeved on the outer side of the cylinder barrel in the longitudinal direction, and at least three arm pin holes are formed in each of the basic arm and the telescopic arms in the longitudinal direction. The single-cylinder plug pin type telescopic arm provided by the present invention adopts one telescopic oil cylinder and at least two cylinder heads, each cylinder head is adapted to lock and unlock the telescopic oil cylinder and any telescopic arm, the telescopic arms are extended out or retracted in a relay transmission manner to achieve the extension and retraction of the single-cylinder plug pin type telescopic arm, the length of the oil cylinder is shortened, the cylinder diameter and the rod diameter of the oil cylinder are decreased, the cost of the oil cylinder is lowered, the upperstructure weight is reduced, the lifting capacity is improved, and there are more crane design spaces.

Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm

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Xuzhou, China

Quan Dong