Hydraulic system of empty container stacking locomotive

Abstract

The invention provides a hydraulic system of an empty container stacking locomotive. The hydraulic system comprises circulating oil circuits. Hydraulic oil in an oil tank is led into an integrated multi-way valve by dual-gear pumps, and hydraulic oil in the integrated multi-way valve is respectively supplied into lifting cylinders, tilting cylinders and a steering cylinder by the aid of a pilot control handle, so that the respective circulating oil circuits can be formed; the oil tank is connected with a gear pump, an output end of the gear pump and an output end of the pilot control handle are connected with inlet ends of a quick lifting valve bank, and an outlet end of the quick lifting valve bank is connected with the lifting cylinders by a first backpressure check valve; the lifting cylinders are connected with an emergency descending valve by speed limit valves, and an electromagnetic valve of the emergency descending valve is connected with a manual switch by an electric wire; the tilting cylinders are connected with direct-acting overflow valves, and the integrated multi-way valve is connected with the tilting cylinders and the direct-acting overflow valves respectively, so that circulating oil circuits can be formed. The hydraulic system has the advantages that tilting, steering and lifting functions and the like can be integrated, so that pipeline arrangement can be reduced, the work safety of lifting appliances can be improved, and the gantry lifting speed can be increased.

Description

Technical field [0001] The invention relates to an empty container stacking locomotive, in particular to a hydraulic system of the empty container stacking locomotive. [0002] Background technique [0003] Empty container stacking locomotives are widely used in ports, docks, and storage yards. They are specialized in stacking and transferring empty containers. The empty container stacking locomotives mainly use hydraulic systems to achieve the front and back tilt of the mast. Actions, lifting and lowering actions of the container, steering actions of the whole vehicle, fuel supply function of the spreader, etc. The hydraulic system mainly includes gear pumps, multi-way valves, steering gears, priority valves, cylinders, pilot oil source valves, pilot control handles, etc. The main hydraulic components are arranged separately. This system has the following shortcomings: First, the container The empty container stacker locomotive has many hydraulic system components, and its tilt,...

AI Technical Summary

Problems solved by technology

Its hydraulic system mainly includes gear pumps, multi-way valves, steering gears, priority valves, oil cylinders, pilot oil source valves, pilot control handles, etc. The main hydraulic components are arranged separately. This system has the following disadvantages: First, the container The hydraulic system of the empty container stacker locomotive has many components, and its tilting, steering, lifting and other functions are set separately, the pipeline layout is complicated, the maintenance is inconvenient and the cost is high; The lifting speed of the gantry of the empty container stacking locomotive is slow; the third is poor safety performance; the fourth is that the fine iron filings in the hydraulic oil tank cannot be effectively collected; Oil leaking out from the tank breather

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