SCMC7052, D320 tower crane appraisal meeting in February 28, 2012 in Sichuan construction machinery (Group)meeting room at two Limited by Share Ltd. Experts came from the office of the provincial construction, Sichuan University, Southwest Jiao Tong University, Chengdu University, mechanical design institute and other professionalorganizations, attended the meeting and company general manager, deputy general manager of the company,mainly responsible for company tower crane design and related personnel.

Identification shall be presided over by the expert meeting of Southwest Jiaotong University, including the general situation of tower crane (involving the innovation point and the common ground), quality control report, test report,the comprehensive report and economic report.

C7052 tower crane tower crane is the combination of high performance development and market demand, the overall layout is reasonable, beautiful and economic, with unique design concept, optimize the weight. The tower crane structure has four kinds of combinations, the maximum working range of 70m, end load 5.2t. The standard section of 2.5 × 2.5 × 5.78 and 2.3 × 2.3 × 3 two, two kinds of standard section has a characteristic each, 2.5m section for Neita jack up method, 2.3m section adopts traditional jacking method. The four agencies are using frequency conversion technique, using the mature technology and equipment, safe and reliable.

D320 luffing jib tower crane for the international market design, construction sites are most suitable for the operation of the narrow space. In the design of light weight, balance arm follow the requirements of short, very satisfied with the overall effect. In the tower crane innovation, reached the international advanced level, the boom structure using new materials, reducing the weight of 30%. Connecting structure created a new type of welding joint, to maintain the integrity of steel, improve safety performance. Hoisting and luffing mechanism adopts the L shape, compact structure, convenient transportation. In order to improve the safe operation of the tower crane, the D320 design for mechanical and electronic type two set of security system.

The expert group review the company to provide the relevant documents and materials, through the consideration ofevaluation, the C7052 tower crane reached the domestic leading level of similar products; the advanced level ofsimilar products reach the international of D320 tower crane. Agreed that the two products of mass production, and the SCM in recent years of product development and technology progress fully affirmed. The C7052, D320 tower crane identification will be a complete success, since then, the SCM tower crane discourse will add a brilliant page.