Explosion-proof and intrinsically-safe PLC (programmable logic controller) integrated control box for mining

Abstract

The invention relates to an explosion-proof and intrinsically-safe PLC (programmable logic controller) integrated control box for mining, which comprises an explosion-proof shell, wherein the top end of the explosion-proof shell is provided with a top cover made of stainless steel; the upper end surface of the top cover is provided with a plurality of magnetic buttons; the lower end surface of the top cover is provided with a Hall switch plate; the Hall switch plate is provided with a plurality of Hall elements; each Hall element is respectively matched with one magnetic button; the upper part of the left side wall in the explosion-proof shell is provided with a box opening power-off protection device; the left side in the explosion-proof shell is sequentially provided with a programmable controller, a signal conversion module and a display module from bottom to top; the display module is mounted on the top cover; and the lower part of the explosion-proof shell is provided with a ground protection device. The invention aims to provide an explosion-proof and intrinsically-safe PLC integrated control box for mining, which integrates a control function, a power supply function, a signal acquisition function, a signal conversion function and an information display function, has the effects of power-off protection, overload protection, overvoltage protection and overcurrent protection and achieves the advantages of small equipment size, low manufacturing cost, convenient mounting process, long service life and higher safety performance.

Description

technical field [0001] The invention relates to a mine flameproof and intrinsically safe PLC integrated control box. Background technique [0002] At present, among the PLC control box products used in mining, the split design is adopted, and the product functions are simplified. The PLC product only has the PLC function, and the rest of the power supply, signal acquisition, signal conversion, and information display functions need to be used separately. The provision of other products leads to the configuration of a set of PLC control system required for on-site control in coal mines. It is often combined with multiple products, resulting in a large amount of space on the work site occupied by the PLC control system, and the purchase cost of the product is also very high. In addition, the split design of the PLC control system also has defects such as increased probability of control system failure, increased difficulty in troubleshooting, and high maintenance costs. Cont...

AI Technical Summary

Problems solved by technology

[0002] At present, the PLC control box products for mining use a split design, and the product functions are simplistic. The PLC product only has the PLC function, and the rest of the power supply, signal collection, signal conversion, and information display functions need to be used separately. The provision of other products leads to the configuration of a set of PLC control system required for on-site control in coal mines, which often requires a combination of multiple products, resulting in a large amount of space on the work site being occupied by the PLC control system, and the purchase cost of the product is also very high. In addition, the split design of the PLC control system also has defects such as increased probability of control system failure, increased difficulty in troubleshooting, and high maintenance costs.

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