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Hydraulic pushing equipment is widely used to transport the extreme heavy structure and equipment in road and bridge, construction, railway, electric power, metallurgy, petrochemical, etc. In this article, the hydraulic pushing equipment can move with the pushed object along the track, which is mainly composed of hydraulic cylinder and clamping device. The clamping device installed in the back of the hydraulic cylinder mainly consists of a rod and bugles beside the rail. The device can provide reaction force when the piston rod stretches out through the compaction of the rod and bugle. The clamping device follows the movement of the hydraulic cylinder when the piston rod retracted. This paper takes the hydraulic pushing equipment of 2,500-ton ring crane as an example to introduce the specific design, and optimizes the key components and overall structure using ANSYS.

Aiming at solving the problem of excess or lack of maintenance which exists in traditional maintenance of stack crane in automatic storage and retrieval system, the stack-crane monitor and diagnostic system (SCMDS) based on the component module has been proposed, using the SCMDS as a research object, and utilizing the open-system architecture for condition-based maintenance (OSA-CBM) model and component technology theory for reference. First, this paper details the internal structure, functional modules, and interactive interface of the generic component module with the reconfigurable and scalable features in SCMDS. Second, it puts forward the six layers whole project of SCMDS which constituted by single and nested components. Finally, using the fault tree analysis model which established on the physical characteristics of the stack crane as an example, it describes the specific implementation of a single component and also provides the theoretical basis for application.

A kind of special spreaders of super-tonnage crane are studied and designed, which are used for lifting large-scale tower equipments. As a very key component or bearing of the crane, the design of the special spreader is in the pursuit of the rationalization and the lightweight of the structure on the premise of ensuring high security. Studying and analyzing the mechanical characteristics and the actual working conditions of the tower equipment, using Solid Works to build the parametric model and importing the image into the ANSYS Workbench for the finite element analysis which is based on the traditional mechanical design, a comprehensive scheme combining the traditional design and the parametric modeling and finite element design is proposed. Finally, take the spreader of the 2,500-t ring crane as an example, which proves the feasibility of the design concept and the design process. Also, it provides a theoretical basis and design method for the design of similar projects.

This paper is based on the design of 2500t ring crane. Because of the high-reliability requirement of this crane, a design scheme of distributed control system based on CAN bus in huge crane is proposed. The author mainly introduces the composition and realization of the system, the design of data communications, and the design of monitoring and controlling function of host computer. This system can achieve coordinated distributed control in the actions of hosting, luffing, slewing, machine leveling, and tower head leveling of the crane. It can also collect and monitor the status information of the crane in real time.

In view of the problem of the operational risk on distribution center, a technical framework of logistics equipments that adapted to the risk-based maintenance decision making is proposed. The frame includes three modules: risk analysis, risk evaluation, and risk control. The reliability of equipment and consequence of malfunction are considered. The risk is quantitatively analyzed, by which maintenance strategy is built for decision objective, so that we can build the management system of logistics equipment. An instance is taken to explain how to use the risk-based maintenance decision technique to logistics equipment.

The course Automatic Control Theory is a fundamental subject for machinery design, manufacturing and automation students of bachelor degree programs in College of Mechanical Engineering, Tongji University. The course construction under the framework of Tongji’s “Excellent Talent Program” has been proposed revolving around teaching content adjustment, teaching methods improving, bilingual teaching developing, and staff construction. This paper discusses the course content adjustment focused on typical theories and widely used engineering techniques. Teaching methods improving faces to the problem of quite diversified student population in university today and present some active methods such as problem-based teaching to improve the students’ ability of independent analysis and solving problems. About 5 years bilingual teaching experience of this course shows that suitable textbook, student-based teaching method and small scale class will benefit the teaching effect. The course Automatic Control Theory is developing to satisfy the demands of advanced engineering education.