A hydraulic system load intelligent control system

Abstract

The invention discloses a hydraulic-system-loaded intelligent control system. All actuating valves in a hydraulic system are connected to a power source through a current information collection device. A control procedure comprises the following steps that 1, the coil driving current value X, generated in the working process, of each actuating valve is detected; 2, the hydraulic system is started; 3, a processor compares the current value X obtained at present with the mean current value X' in a storer; and 4, when the current value X equals to (0.8-1.2)*X', the processor judges whether an overflow valve is powered on or not, if the overflow valve is powered on, operation is returned to step 3 to implement step 3, and if the overflow valve is not powered on, the processor controls the overflow valve to be powered on and started. Due to the fact that the coil current values of all the actuating valves are detected through the current information collection device, the situation that each button of each actuating valve is connected to the overflow valve through a circuit is avoided, and thus a control circuit is simplified; wiring difficulty is avoided; and fault probability density and cost are lowered.

Description

technical field [0001] The invention relates to the field of hydraulic systems, in particular to an intelligent load control system for hydraulic systems. Background technique [0002] Hydraulic systems are widely used in construction machinery, manufacturing and other fields. Automatic control is the most commonly used control form of hydraulic systems. Especially with the continuous improvement of intelligent manufacturing technology, hydraulic automatic control accounts for an increasing proportion. [0003] When the open system of the hydraulic circuit is started or when there is no need to output high pressure, the overflow valve is not powered, and the hydraulic oil flows back directly to the hydraulic oil tank through the oil return filter, which not only protects the hydraulic system, but also saves energy consumption significantly . The problem caused by this method is that when the equipment needs pressure, the overflow valve should be powered on in time, and when...

AI Technical Summary

Problems solved by technology

The lines connected to the overflow valve should also increase accordingly, making the lines very complicated, increasing the cost and difficulty of wiring, and increasing the probability density of failure

In order to avoid this situation, sometimes the relief valve is always closed after the system is started, and the hydraulic system works under high load, which causes the hydraulic oil to heat up rapidly and the energy consumption is also greatly increased.

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