| Aiming at condition that the internal technical level of aerial work platform is lower than the external one, and based on analysis and comparison of the key technology and the developing tendency of the external aerial work platform, this paper designed hydraulic system, horizontal adjustment system and electric control system of TLC21 type of aerial work platform according to customer's acquirement and external advance technology.Firstly, based on analysis and comparison of external alike productions this paper detailedly introduce the design of main apparatus and hydraulic drive system including of steering apparatus, turning apparatus, telescopic arm apparatus etc. Because there are many apparatus that must be controlled and some of apparatus need electro-hydraulic proportional control, load-sensing proportional sandwich valves are applied to control main apparatus in this system. And then research of driving hydraulic system is carried out, because this is a key technology that must be solved. Afterward, Horizontal adjustment apparatus is designed with MATLAB simulation and mechanical optimization design methods. Finally, CAN-BUS technology is applied to electric control system, hardware network of electric control is designed and programs of electro-hydraulic control are finished.At present, the entire hydraulic drive engineering aerial work platforms have been provided to customer after assembled and debugged by Tonglian Company. The vehicles have achieved the anticipated goals, improved the producing efficiency and obtained the considerable economic profit. |
