Research on automated assembly of sealing ring based on bogie holding axle box

• Published in: Journal of physics. Conference series Vol. 3043; no. 1; pp. 12153 - 12161
• Main Authors: Huang, Yaohui, Mao, Jiyuan, Zha, Zhenyuan, Ma, Huan, Wang, Yuntong
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.06.2025
• Subjects: Automation; Axleboxes; Robot arms; Robotics; Sealing; Shafts (machine elements); Undercarriages
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/3043/1/012153

This subject aims to study the realization of automated continuous assembly of the sealing ring and sealing cover of the holding axle box in the train bogie of the Chinese railway industry. Since the sealing ring and the drive shaft are very precise, the gap is as small as 0.2 mm or less, the outer diameter is 600 mm, the temperature is 150°C, and the weight is 30 kg, so the difficulty of manual assembly is obvious. Aiming at the problems of low efficiency, high labor intensity, and certain safety risks of traditional manual assembly, this paper designs an automated assembly system for robotic hot-assembled sealing rings and sealing covers. The system consists of an operator operation area, a parts preparation area, a shaft parts placement area, and a robotic arm working area, which realizes the automated assembly of the sealing ring and sealing cover. With the innovative design of the gripper at the end of the robotic arm, the system is able to correct errors in the assembly process, thus realizing a precise set of sealing rings. This system improves assembly efficiency, ensures assembly accuracy, and greatly reduces costs. Meanwhile, thermodynamic simulation results show that the system can meet the requirements of assembly temperature under different working conditions.