The mast section of the tower crane consists of four independent steel frames. The four-beam type steel frame is connected together by a hinged hole bolt to form a mast section. Each type of steel frame is composed of a main limb, a fishtail plate, a diagonal web, a connecting plate and a gusset plate. At least two diagonal rods are fixedly connected on each side of the main limb, and two diagonal spars are not connected with the main limb. One end is fixed and connected by a connecting plate, and the connecting plate is connected with another connecting plate of two inclined webs at the corresponding position on the steel frame. With this structure, the mast section is easy to transport and easy to disassemble. At the same time, the overall structural weight is reduced without affecting the structural strength and normal use of the crane.
Friends from Malaysia visited our factory and spoke highly of our products. Before leaving, we carefully prepared the gifts. We have established long-term cooperative relations with construction companies and distributors in more than 30 countries. Our products have gained a good reputation.We sincerely welcome friends from all over the world to visit our factory.
Shandong Runchen Heavy Industry Machinery Co., Ltd. was established in 1998. We focuses on development and production of construction machinery and hoisting machinery. The major products are tower crane and construction hoist. Especially our tower crane is featured with convenient assembly and disassembly, all types being jack-up types and according to customers requirement design for traveling types and inner climbing types. Lock shaft connection is adopted between mast sections, between mast section and pivoting supports, and between main parts, to facilitate aloft work, safety and convenient mounting.
Covering an area of 520,000 square meters, our company has one of the largest production factory for tower cranes in China. The total investment reaches 1 billion RMB. Currently, we have 8 comprehensive workshops in use, 3 office buildings and 5 dormitory buildings, which cover an area of 215,000 square meters in total. We possess over 300 sets of all kinds of modern production equipment. Therefore, we are capable of producing over 5,000 sets of medium and large tower crane and construction hoist every year.
We have gradually developed an established standardized and normalized management mode. We have international advanced robot welding assembly lines, which ensure automatic welding of mast sections and main limb as well as turntable in tower cranes. As a result, high welding quality and accuracy can be achieved and production efficiency is significantly improved at the same time. We also possess a shot blasting and spaying assembly line. Our products are transferred to the painting room where they get sprayed with priming paint and finished coat after they go through processing of blasting, rust cleaning and eliminating residual stress. In this way, the painted surface achieves higher adhesive force, better appearance quality and longer service time. Furthermore, our two flame cutting machines ensure high precision cutting and improving the whole product quality level.