Early warning device, system and method applied to stirring main machine and engineering machine

Abstract

The invention discloses an early warning device, system and method applied to a stirring main machine and the stirring main machine. The early warning method comprises the steps that the current current value of a motor of the stirring main machine is received; whether a journal sticking phenomenon of the stirring main machine occurs is judged according to the current current value, wherein in the production process of concrete, the load current difference value between the current current value and the current value under the normal production condition is calculated, and whether the journal sticking phenomenon occurs is judged according to the comparison result between the load current difference value and a load difference threshold; under an unloaded condition of the stirring main machine, the unload current difference value between the current current value and the load current value under the normal condition is calculated, and whether the journal sticking phenomenon occurs is judged according to the comparison result between the unload current difference value and an unload difference threshold. By means of the early warning device, system and method applied to the stirring main machine and the stirring main machine, automatic detection on the journal sticking condition of the stirring main machine is achieved by monitoring the current of the motor of the stirring main machine, and workers can be timely reminded to clean the stirring main machine, and therefore long-time work stoppage caused by too much raw materials stuck to a shaft of the stirring main machine is effectively avoided.

Description

technical field [0001] The invention relates to an early warning technology for a stirring main engine, in particular to an early warning device, system, method and engineering machinery for a stirring main engine. Background technique [0002] In the process of producing concrete, after various aggregates, powders, additives, water and other raw materials are put into the mixer for mixing, some of the raw materials will stick to the shaft of the mixer. After the mixer has been working for a period of time, if the mixer is not cleaned, it will cause the mixer to hold the shaft. This will not only seriously reduce the production efficiency of concrete, but also affect the service life of the mixing main engine and cause serious economic losses. [0003] At present, the main method of cleaning the mixing machine is to regularly arrange the cleaning personnel of the mixing machine to conduct regular inspections. If agglomeration is found, the mixing machine will be cleaned imm...

AI Technical Summary

Problems solved by technology

[0004] 1. Because there are too many raw materials bonded to the shaft of the main mixer, it is very difficult to clean up, and it takes a lot of time to stop the machine for maintenance and cleaning, which will seriously affect the production efficiency of the mixing station;

[0005] 2. If continuous production is required, it is impossible to know whether the mixing machine needs to be cleaned, and it is easy to cause the shaft of the mixing machine to hold;

[0006] 3. Manual inspection will result in unstable judgment of the shaft holding of the mixing main engine

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