An external automatic monitoring and protection system for mining machinery

Abstract

The invention relates to an external mining machinery automatic monitoring and protection system, which comprises a temperature acquisition module, a voltage acquisition module used for receiving temperature signals acquired by the temperature acquisition module and an intelligent analysis and control module, wherein the voltage acquisition module transmits data measured by the temperature acquisition module to the intelligent analysis and control module, and the intelligent analysis and control module performs corresponding compensation and correction on the data, calculates a corresponding device surface temperature according to a voltage-temperature difference functional relation, speculates an internal temperature of the machinery according to internal-to-external heat transfer and performs judgment on running conditions of the machinery. The control system is independent of the original electrical system, high in adaptability and capable of fundamentally solving a problem that the original machinery protection system loses effectiveness after changing from oil into electricity. In addition, the system can realize intelligent analysis for the data and instruction control for the control module, and is executed in a programmed manner rather than single software, so that the system is enabled to have very high compatibility, and facilitating personalized setting.

Description

technical field [0001] The invention relates to an external mining machinery automatic monitoring and protection system, which belongs to the field of mechanical intelligent monitoring and control. Background technique [0002] At present, there are a large number of "oil-to-electricity" mining machinery in the field of open-pit mining in China, that is, private modification for the purpose of reducing the cost of power drive, replacing fuel drive with motor drive. The effect of such refitting varies with different refitting schemes. Although it can reduce the cost of power drive without affecting the power output, such refitting often results in a large refitting range, which makes the original mechanical protection system no longer suitable. , so that some machinery loses the function of automatic monitoring of running status and protection after modification. A major feature of mining machinery failure is that the temperature of the faulty part is too high. The conventio...

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Problems solved by technology

The effect of such refitting varies with different refitting schemes. Although it can reduce the cost of power drive without affecting the power output, such refitting often results in a large refitting range, which makes the original mechanical protection system no longer suitable. , causing some machinery to lose the function of automatic monitoring of running status and protection after modification

A major feature of mining machinery failure is that the temperature of the faulty part is too high. The conventional monitoring and protection system monitors the operating state of the machinery by monitoring the temperature of the components. When the original equipment fails, it is generally difficult to find a suitable one. alternative equipment

Secondly, when designing a new monitoring and protection system, you will face two problems: one is that the power of the motor that provides power is often very large, and the electromagnetic interference generated during work is also very strong. For the low-voltage signal output value The single-chip microcomputer integrated with the sensor and the microelectronics interferes too much; second, the system designed in this way is a one-to-one custom design, which not only has poor adaptability to multiple machines, but also increases the cost, so there is not much practical significance

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