The telescopic boom of Zhonglian aerial work platform has reached the international advanced level
Recently, ZOOMLION crane company independently developed two aerial work platform telescopic arm smoothly off the line. All along, Zhong Lian aerial work platform adhering to the continuous innovation on the product, quality excellence, and meticulous service grinding. Adhere to the user's work is higher than all the service concept, in the accumulation of good reputation at the same time, more gradually enhance the high altitude platform brand core competitive advantage.
Aerial work platform is a new product line of the company. It can be used in all kinds of industries such as aerial work, equipment installation, maintenance and so on. It is still in the embryonic stage in China, and its potential market scale and space are huge. Telescopic arm as the main force components of the vehicle, occupies an extremely important position in the design of the vehicle, its box structure, processing, manufacturing is the difficulty of vehicle manufacturing. Because the manufacture of the arm should not only ensure the accuracy, but also strictly control the weight, so the boom of more than 10 meters must be welded with a high strength steel plate with a thickness of only a few millimeters into a hollow box, and the control of the deformation of the plane welding should meet the technical requirements of the millimeter level.
So long and thin high strength steel plate, production precision requirements are so harsh, therefore, how to control deformation in group welding and welding process is the difficult point of arm manufacturing. The track crane branch has never been welded to similar parts before, and has no experience in the welding of this kind of sheet metal, which is the biggest obstacle in the progress of the project. At the beginning of the project, many workshops and technicians believe that this is an impossible task. In the process of tackling key problems, the members of the project group have collided with each other by different ideas and plans, and organized nearly 10 process plan reviews. At the same time, the project has been communicated with the designers and the workshop backbone, and the final scheme has been determined. In order to control the welding deformation, the project group carried out the welding simulation test before the production, in order to obtain the optimal welding current, voltage, welding speed, welding angle and other parameters. In the subsequent trial process, the project team and according to the characteristics of the boom, the development and design of the overall internal mold tooling, tooling and fixture type F, in order to ensure the welding frame group when the arm is rigid, to prevent the whole distortion, and in the process of welding, the use of fast cooling technology in control. About web wave deformation.
After the welding of the arm is finished, the project group determines the overall deformation and flatness of the boom by the three coordinate marking detector, which meets the design requirements and reaches the international advanced level.
The success of arm work of high altitude working platform indicates that ZOOMLION mastered the manufacturing technology of telescopic arm which is the most critical core structure of aerial work platform, breaking the monopoly of foreign enterprises on welding technology of high strength steel sheet. The company has gained valuable experience in the production of sheet metal welding, and laid a good foundation for mass production of ZOOMLION aerial work machinery.
