Hydraulic system of hanger of stacking machine

Abstract

The invention provides a hydraulic system of a hanger of a stacking machine. The hydraulic system of the hanger of the stacking machine comprises a lateral-movement oil cylinder, a rotation-locking oil cylinder and a gear pump connected with a hydraulic oil box. The oil outlet end of the gear pump is respectively connected with a pilot-operated type multi-directional control valve and an oil inlet of a pilot-operated oil supplying valve block and the pilot-operated oil supplying valve block is connected with an energy storage; a lateral-movement main valve element and a rotation-locking main valve element are arranged in the pilot-operated type multi-directional control valve and three electromagnetic valves connected in parallel are arranged in the pilot-operated oil supplying valve block; a hydraulic loop controlled by the lateral-movement main valve element is respectively connected with a rodless cavity and a rod cavity of the lateral-movement oil cylinder through a speed regulating valve so that a loop can be formed; a hydraulic loop controlled by the rotation-locking main valve element is connected with the rotation-locking oil cylinder through an electromagnetic pile-up valve so that a loop can be formed, and a hydraulic lock is arranged between the electromagnetic pile-up valve and the rotation-locking oil cylinder. The lateral-movement speed of the hanger is adjusted through control over the flow of hydraulic oil passing through the speed regulating valve, the phenomenon that the rotation locking oil cylinder moves due to misoperation is avoided through the hydraulic lock, and the reliability of the hanger for grabbing a box is guaranteed.

Description

technical field [0001] The invention relates to a hydraulic system, in particular to a hydraulic system of a stacker spreader. [0002] Background technique [0003] Empty container stacker is the necessary empty container stacking equipment for various ports, cargo stations and container production enterprises. It has high operating efficiency and frequent work. The hydraulic system of the spreader of the existing empty container stacker is basically imported together with the spreader, which has the following problems: the system uses imported hydraulic components, which makes the cost high and the structure is complicated; the system functions are relatively unified, Basically, they have three functions of side shifting, telescoping and box grabbing, but the speed of side shifting is fixed, which is not conducive to controlling the movement of the spreader, and there are safety risks; in addition, in the existing hydraulic system, when the oil pump When the oil supply i...

AI Technical Summary

Problems solved by technology

The hydraulic system of the spreader of the existing empty container stacker is basically imported together with the spreader, which has the following problems: the system uses imported hydraulic components, which makes the cost high and the structure is complicated; the system functions are relatively unified, Basically, they have three functions of side shifting, telescoping and box grabbing, but the speed of side shifting is fixed, which is not conducive to controlling the movement of the spreader, and there are safety risks; in addition, in the existing hydraulic system, when the oil pump When the oil supply is stopped, or when the reversing valve is in the neutral position, the heavy-duty grab tank oil cylinder bears unfixed forces in two directions, and the pressure oil in the oil cylinder is likely to leak from the gap of the reversing valve, and the action of grabbing the tank may easily cause misoperation cause safety hazard

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