The invention discloses an elevator parallel hot standby double-loop speed control system and method. The elevator parallel hot standby double-loop speed control system comprises a detection feedback device, a hydraulic system and an electrical control device. The two brake speed control loops are arranged, the isolating valves are arranged between the proportional directional valves and the brakes of the two brake speed control loops, when a fault occurs, the isolating valves execute the power-off action, the loops can be automatically cut off, the fault loop is physically isolated from the main loop, and the influence on the normal working loop of the brake system is avoided; the two brake speed control loops can be switched and selected to work simultaneously or one brake speed control loop is used and the other brake speed control loop is standby through the electrical control device, so that multiple working modes are realized; the four one-way valves form a hydraulic bridge circuit, it can be guaranteed that when any energy accumulator is damaged and loses pressure, the system automatically shields the faulted energy accumulator, the other energy accumulator with the normal function works, safe and stable braking is achieved, and high reliability of the braking process is guaranteed.
本发明介绍了一种提升机并联热备双回路速度控制系统及控制方法,包括检测反馈装置、液压系统和电气控制装置;本发明的设置两条制动速度控制回路,在两条制动速度控制回路的比例换向阀和制动器之间均设置隔断阀,在出现故障时,隔断阀执行断电动作,能自动切断回路,使故障回路与主回路物理隔离,避免对制动系统正常工作回路造成影响;两条制动速度控制回路,可通过电气控制装置进行切换选择同时工作或一用一备,实现多种工作模式;四个单向阀组成液压桥路,可保证任一蓄能器损坏失压时,系统自动屏蔽该故障蓄能器,由另一功能正常的蓄能器工作,实现安全平稳制动,保证了制动过程的高可靠性。
Elevator parallel hot standby double-loop speed control system and control method
一种提升机并联热备双回路速度控制系统及控制方法
2023-11-10
Patent
Electronic Resource
Chinese
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