Intelligent lifting method and device for scraper knife in engineering machine

Abstract

The invention discloses an intelligent lifting method and an intelligent lifting device for a scraper knife in an engineering machine. The method comprises the following steps of: (1) judging the current working mode; (2) comparing the conversion speed of the current revolution speed of a wheel with the current actual ground speed of the machine: if the current actual ground speed of the machine is smaller than the conversion speed of the current revolution speed of the wheel, judging that the wheel slips, and entering a step (3), otherwise, entering a step (4); (3) outputting an instruction for lifting the scraper knife; and (4) detecting the load of the scraper knife: when the power corresponding to the current load of the scraper knife is greater than the maximum power supplied to the scraper knife by an engine or the power corresponding to the set load, outputting an instruction for lifting the scraper knife. The device comprises a scraper knife lifting module, a control module, a load detection module for detecting real-time load condition of the scraper knife, a ground speed detection module and a wheel revolution speed detection module. The device has the advantages of simple and compact structure, simple principle, good reliability, capabilities of adjusting the load in real time, improving the work efficiency and reducing the labor intensity of workers and the like.

Description

technical field [0001] The invention mainly relates to the field of engineering machinery, in particular to an intelligent lifting method and device for a shovel in the engineering machinery. Background technique [0002] The working conditions of construction machinery with shovel blades are complicated. When the shovel blade encounters mounds, stones, and other invisible hard objects in the soil, the load will change suddenly and the impact will be large, which will often cause the engine to slow down or even stall, affecting work efficiency. Machine manufacturers often increase the utilization rate of engine power to alleviate the impact of sudden load changes. However, the power of the engine is certain, and when the load is large, the above scheme cannot be implemented. The most effective way is to raise the blade to a suitable height and reduce the load. [0003] 1. The operator manually lifts the shovel blade based on experience, but the manual response is slow, th...

AI Technical Summary

Problems solved by technology

[0003] 1. The operator lifts the shovel manually based on experience, but the manual response is slow, the lifting amount of the shovel is not easy to control, the operator has high labor intensity and low efficiency

[0004] 2. Floating shovel, the rod cavity and rodless cavity of the lifting cylinder are connected to the oil tank, relying on the gravity of the shovel to work on the ground; or the oil channel is connected to the oil tank through the accumulator and pressure valve to form different ballasts force floating technology; can only be used in special conditions

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