Intelligent control system of fixed-displacement hydraulic system for loader

Abstract

The invention discloses an intelligent control system of a fixed-displacement hydraulic system for a loader. The intelligent control system comprises a hydraulic oil tank, a work pump, a distribution valve, a pilot pump, an intelligent control module, a pilot valve, a rotating bucket oil cylinder and a moving arm oil cylinder. The intelligent control module is mainly composed of a first electromagnetic valve, a second electromagnetic valve, a first pressure sensor, a second pressure sensor and a controller. An electric control valve set is integrated by the intelligent control module, and under the condition that the module is not adopted or the function of the module fails, work of the whole work hydraulic system in a traditional control manner is not influenced; and when the module is used for work, the one-key operation function of the module is adopted, seamless switching of the work device bucket tilt-back action and the moving arm lifting action can be intelligently achieved, automatic unloading of the work hydraulic system is finally achieved, and meanwhile the labor intensity of operators of the loader is greatly lowered. The effects that the work hydraulic system saves energy and is efficient, and the traction force of the loader in the joint operation state is increased are achieved.

Description

technical field [0001] The invention relates to a hydraulic system of a loader, in particular to an intelligent control system of a quantitative working hydraulic system for a loader. Background technique [0002] At present, most domestic loaders use quantitative hydraulic systems (quantitative working hydraulic systems and steering hydraulic systems). The energy consumption of the quantitative hydraulic system and the variable hydraulic system in the action) will not produce much difference. Due to the uneven level of machine operators, it is inevitable that some operators will let the whole machine be in a high-pressure overflow state during work and operation, and the hydraulic system will consume more than the normal rated load when the high-pressure overflow occurs. About 20% power in state. This power consumption is transmitted from the hydraulic pump to the gearbox, and finally to the engine. Since there is another efficiency problem in this power transmission, the...

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Problems solved by technology

Due to the uneven level of machine operators, it is inevitable that some operators will let the whole machine be in a high-pressure overflow state during work and operation, and the hydraulic system will consume more than the normal rated load when the high-pressure overflow occurs. about 20% power at state

This power consumption is transmitted from the hydraulic pump to the gearbox, and finally to the engine. Since there is another efficiency problem in this power transmission, the power consumption reflected on the engine when the hydraulic system is high pressure overflow will be greater, that is, When the engine is in the high-pressure overflow state of the hydraulic system, the fuel consumption is about 25% higher than when the hydraulic system is working normally, which results in an increase in the energy consumption of the whole machine

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