Clamping jaw hydraulic system of hydraulic stacker crane

Abstract

The invention discloses a clamping jaw hydraulic system of a hydraulic stacker crane, and relates to the technical field of hydraulic control systems. The main structure comprises an oil tank, a hydraulic pump, a main clamping jaw oil cylinder, an auxiliary clamping jaw oil cylinder, a first external control one-way valve, a first two-position three-way electromagnetic reversing valve, a first three-position four-way electromagnetic reversing valve, a second external control one-way valve, a second three-position four-way electromagnetic reversing valve and a second two-position three-way electromagnetic reversing valve. By adopting a differential loop, the installed capacity can be reduced, and energy conservation and consumption reduction can be realized; the external control one-way valve and the two-position three-way reversing valve are combined for use, so that when the system is in a pressure maintaining state, the external control one-way valve is quickly closed to maintain the pressure; when an energy accumulator is pressurized, rapid pressurization can be realized; during pressure maintaining, the energy accumulator is slowly released; when the pressure of a rod cavity of the hydraulic cylinder is lower than the opening pressure of a leakage hydraulic control one-way valve, the leakage hydraulic control one-way valve is in a closed state, and the energy accumulator can maintain high pressure.

Description

technical field [0001] The invention relates to the technical field of hydraulic control systems, in particular to a hydraulic palletizer jaw hydraulic system. Background technique [0002] The hydraulic palletizer is widely used in the palletizing of regular bulk materials (such as bricks, blocks, etc., for the convenience of description, the following description will be described with bricks as the object), and the attached figure 1 The bricks in the initial state shown in a are sorted into attached bricks by the main jaws. figure 1 The state of b is sorted into the attached state by the auxiliary jaws figure 1 The state shown in c. Then the main jaws and auxiliary jaws are clamped and moved from the original position to the stacking position. The hydraulic palletizer is driven by a hydraulic system. Due to structural limitations, the hydraulic cylinder is often clamped by the pressure oil in the rod cavity, which leads to oil in the rod cavity when the jaws are loosen...

AI Technical Summary

Problems solved by technology

When the hydraulic cylinder enters the clamping process again, the system not only needs to replenish high-pressure oil to make the hydraulic cylinder move, but also replenishes pressure oil to enter the accumulator to increase the pressure of the accumulator and increase energy consumption

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