An intelligent manufacturing system and method for an escalator drive spindle

Abstract

The invention discloses an intelligent manufacturing system and method of an escalator drive spindle, and belongs to the field of escalator part machining. The system comprises a welding system, an aging system and a detecting and shaping system. The output ends of the welding system, the aging system and the detecting and shaping system are connected with the input end of a main control system. Detection and feedback information input by the main control system includes welding residual stress, welding deformation and inherent frequency; an expert system and a database thereof are establishedaccording to the input detection and feedback information; the welding system, the aging system and the detecting and shaping system are integrated in the system, the welding residual stress, the welding deformation and the inherent frequency serve as the key detection and feedback information, the expert system and the database thereof are established, and aiming at machining errors caused by different interference factors in all procedures in the production process, other procedures are subjected to real-time process adjusting; and vibration aging, visual detection and laser scanning technologies are adopted for the method, and the problems of fatigue failure, deformation and the like of a welding joint of the escalator drive spindle are solved.

Description

technical field [0001] The invention belongs to the field of escalator parts processing, and in particular relates to an intelligent manufacturing system and method for an escalator drive spindle. Background technique [0002] The escalator is an indispensable means of transportation in public places such as stations, shopping malls, and subways. It not only greatly relieves the pressure of busy traffic, but also brings great convenience to the society. However, with the increasing number of escalators, dangerous accidents on escalators have been on the rise in recent years. According to statistics, 30% of escalator safety accidents are caused by wear, deformation, failure or even fracture of parts or components in the escalator drive system. [0003] The escalator drive shaft is the core component of the escalator drive system. It mainly transmits the power from the traction machine to the step sprockets at both ends, and the step sprockets drive the steps to move along th...

AI Technical Summary

Problems solved by technology

[0004] However, according to the analysis of the use in recent years, there are three main problems in the welded escalator drive shaft: ①Due to the existence of residual stress at the weld, the welded joint between the main shaft and the sprocket under different working conditions and when the escalator is starting and stopping Bearing cyclic torsion load, it will cause fatigue failure after long-term operation, causing one side of the sprocket and the main shaft to fall off, lose power, and cause the steps to collapse; ②The weld between the main shaft and the sprocket is deformed due to welding, resulting in excessive beating of the end face of the drive sprocket during operation , resulting in severe wear of the step rollers and vibration of the steps, which will cause deformation of the parts after long-term operation, resulting in collisions and collapse

③ Due to the thin wall thickness of the hollow pipe and the sprocket, too much welding penetration will cause weld penetration, and too small penetration will lead to impenetrable welding, and the strength of the welded joint is not enough. Therefore, the penetration of the welding joint directly affects the performance of the drive shaft of the escalator

However, due to the relatively long time-consuming thermal aging, high energy consumption, high pollution, and low efficiency, it no longer meets the requirements of sustainable development of modern manufacturing industries.

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