A new type of hydraulic control system for transfer loader

Abstract

The invention provides a novel hydraulic control system of a transfer-machine and relates to the field of continuous steel casting in the metallurgical industries. The novel hydraulic control system comprises an electro-hydraulic directional control valve, a speed regulating and position locking unit, a speed increase control unit and a hydraulic cylinder unit. A piston cavity and a rod cavity of the hydraulic cylinder unit are sequentially connected with the electro-hydraulic directional control valve through the speed increase control unit and the speed regulating and position locking unit respectively, and the electro-hydraulic directional control valve is connected with a main pressure pipe and a main oil return pipe. According to the novel hydraulic control system, on the premise that increase of the power of a hydraulic pump station and increase of the drift diameter of a hydraulic component are not needed, the speed of a hydraulic cylinder can be greatly improved, and the requirement for quick motion of the transfer-machine is completely met; particularly when multiple hydraulic cylinders act at the same time, the investment and construction cost saving effect is more obvious; meanwhile, automatic switching between the high speed and the low speed of the hydraulic cylinder can be achieved according to the process control requirement, impact generated when equipment is started and stopped is prevented, and the equipment is prevented from being damaged.

Description

technical field [0001] The invention relates to a hydraulic control system of a transfer machine in the field of continuous steel casting in the metallurgical industry. Background technique [0002] At present, in order to improve the production operation rate of continuous casting machines at home and abroad, continuous casting machines with multiple streams are usually used in parallel production. At the end of the slab discharge area of ​​the continuous casting machine, a slab transfer device is used to merge the slabs with multiple streams and send them to the subsequent production line. As a slab transfer device with simple structure, high operating efficiency and low failure rate, the transfer machine is widely used in slab continuous casting machines. [0003] With the improvement of the production rate of continuous casting machines, the high-speed slab continuous casting machines require the transfer machine to have higher operating efficiency, that is, the hydraul...

AI Technical Summary

Problems solved by technology

This known technical solution has the problems of high investment cost in the early stage, high energy consumption in production and operation, and high cost of spare parts in the later stage.

Images