关键词: 齿轮齿条爬升式升船机, 安全制动系统, 多液压站分散控制, 柔性智能制动, 速度闭环反馈控制, 零速制动,

Abstract: The drive systems of full balance vertical ship lifts have the characteristics of randomness of load in magnitude and direction, which results in two load states called generation case and drive case. The conventional pre-set torque break technology for the safety break systems of single hydraulic station integrated control applies a single break torque with double-step shape in any case once the urgent break direction is given, which is not suitable to the safety break systems with multi-hydraulic station distributed control of drive applied in the drive systems of the rail and pinion full balance vertical ship lifts, as high break acceleration occurs. Based on summary of the design of the safety break systems of the Three Gorges ship lift and Xiangjiaba ship lift, this article puts forward a flexible and intelligent break scheme for the safety break systems with multi-hydraulic station distributed control, by which the speed closed loop feedback control is applied for break in the generation case and light load drive case, and the zero speed break is applied for the heavy load drive case. By adopting this break control scheme, the break acceleration in both the generation case and drive case is evidently lowered, and safety of ship lifts in emergency break is assured.

Key words: rail and pinion ship lift, safety break system, multi-hydraulic station distributed control, flexible and intelligent break, speed closed loop feedback control, zero speed break