Nanjing Metro shield machine of North heavy industries successfully passed factory acceptance. Nanjing Metro shield machine of North heavy industries successfully passed factory acceptance. Introduction: on November, experts from China coal third construction group and Nanjing Metro Engineering owner conducted factory acceptance on two 6480mm earth pressure balance shield machines manufactured by the shield machine branch, most of which were equipped with force measuring sensors between the upper platen and the beam, And successfully signed the acceptance certificate. Thus, the North heavy industry shield machine entered the Nanjing market. Order this item
on November, experts from China coal third construction group and the owner of Nanjing metro engineering carried out a survey on two shield machines manufactured by the shield machine branch Φ The 6480mm EPB shield machine was subject to factory acceptance due to small changes in displacement, and the acceptance certificate was successfully signed. Thus, the North heavy industry shield machine entered the Nanjing market
the project order contract was signed on April 7th, 2013, and the delivery period is very urgent. The shield machine branch has set up a project to tackle key problems in this project, and the general manager yangtao has repeatedly called on relevant departments to implement the production plan of each stage and do everything possible to reduce the manufacturing cycle. From design, commissioning, technology, procurement, production organization to various assembly workshops, new breakthroughs have been made in the fields of automobile, high-speed rail, aviation and industrial utilization. The concerted efforts of the upper and lower levels have greatly promoted the improvement of efficiency
the two Nanjing Metro shield machines encountered many difficulties in the production and manufacturing stage. For example, at the beginning of assembly, all the imported main reducers failed to arrive on schedule, and the assembly of the main drive part is the premise to complete the assembly and commissioning of the whole machine. In order to ensure the smooth progress of the assembly work, the relevant personnel of the shield machine company, after calculation and demonstration, and with the consent of the user, adopted the scheme that only two main reducers were used for the preliminary factory no-load commissioning of each shield machine, and the remaining four main reducers were commissioned together at the construction site. In one fell swoop, the volume of the assembly and manufacturing unit was reduced by 20% and the commissioning time was won in two months
while the shield machine branch strives for progress, it also does not forget to reduce the manufacturing cost. During the procurement of commissioning oil, the method of purchasing only one set of oil is adopted. During the factory acceptance of shield machine, the commissioning and assembly personnel are organized to reasonably dispatch and adjust the acceptance scheme with users, so as to achieve the goal of using only one set of commissioning oil and completing the acceptance of two shield machines at the same time within two days. While saving more than 200000 purchase costs, the adverse conditions such as oil drum land occupation and fire and explosion prevention after delivery are avoided. Through the unremitting efforts of all employees of shield machine branch, the production and manufacturing process of the project has won praise from users and owners. At the factory acceptance meeting, the leaders of the third construction company of China Coal Mining Corporation praised: "it is unimaginable for other shield machine manufacturers to realize the design, manufacturing, assembly and delivery of two shield machines in just six months, which reflects the strong strength of North heavy industry."