Excavator hydraulic oil warming-up system and control method thereof

Abstract

The invention belongs to the field of engineering machinery, and relates to an excavator hydraulic oil warming-up system and a control method thereof. The excavator hydraulic oil warming-up system comprises a hydraulic pipeline, the hydraulic pipeline comprises a main pump, a main valve, an electro-hydraulic control reversing valve set, a cooler and a hydraulic oil tank which are sequentially connected, and the electro-hydraulic control reversing valve set is electrically connected with a controller; and the controller collects the temperature of hydraulic oil in the hydraulic oil tank through the temperature sensor and controls the electro-hydraulic control reversing valve set to reverse according to the temperature of the hydraulic oil, and therefore the cooler is controlled to be connected into or disconnected from the hydraulic pipeline. When a direct-driven fan excavator is started in a cold region in winter, the oil temperature of hydraulic oil can quickly reach the working oil temperature, the hydraulic oil warming-up time of the excavator in the cold region can be shortened, and the excavator can quickly enter the optimal working state.

Description

Technical field [0001] The present invention belongs to the field of construction machinery, involving an excavator hydraulic oil heating system and a control method thereof. Background technique [0002] At present, in the cold area in winter, due to the low temperature in the outdoor, the existing direct-driven fan excavator hydraulic oil heating machine mainly passes the energy of the overflow, because the hydraulic oil is also heat dissipation Most of the heat, so it takes a long time to make the hydraulic oil in the best working oil temperature range. [0003] The prior art hydraulic oil heating is too long, due to the high viscosity of the low temperature hydraulic oil, long-term pressure operation on hydraulic parts and radiator wear and impact, reduce the reliability of hydraulic components. Inventive content [0004] In response to the above problems, the present invention provides an excavator hydraulic oil heating system and a control method thereof, and the hydraulic...

AI Technical Summary

Problems solved by technology

[0003] The warm-up time of hydraulic oil in the prior art is too long. Due to the high viscosity of low-temperature hydraulic oil, long-term pressure holding operation will cause great wear and impact on hydraulic parts and radiators, reducing the reliability of hydraulic parts.

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