A control method and control device for an automatic towing cable system of a coal shearer

Abstract

The invention discloses a control method and a control device for an automatic tow cable system of a coal shearer. The automatic tow cable system of a coal shearer includes an annular chain, a power part and a tow cable running part. A driving sprocket is installed on the output shaft, and the driving sprocket and the driven sprocket are connected by an endless chain. The automatic tow cable system can ensure that the cable splint of the shearer is always in a flat state during repeated walking of the shearer. The control method of the present invention ensures that the moving speed of the tow cable running part is half of the moving speed of the shearer by adjusting the rotating speed of the power output shaft of the power part. The control device of the invention includes a speed measuring encoder of the power part, a frequency converter and a tow cable controller, and can regulate the speed of the drive motor and control the commutation. The control method and the control device do not require workers to track and maintain the automatic towing cable system of the coal shearer, thereby improving the degree of automation and intelligence of the equipment.

Description

technical field [0001] The invention belongs to the technical field of coal shearer tow cables, and in particular relates to a control method and a control device for an automatic tow cable system of a coal shearer. Background technique [0002] Coal is one of the non-renewable fossil energy sources. It has always occupied a high proportion in my country's energy structure, and this high proportion will continue for a long time. For a long period of time, the production and consumption structure with coal as the main energy will be very large. It is difficult to change, so the production of coal is very important. Among them, the coal mining machine is one of the important equipment to realize the mechanization and modernization of coal mine production. It is a large and complex equipment integrating machinery, hydraulic pressure and electricity. Its working environment is harsh. If a failure occurs, the entire coal mining work will be interrupted. cause huge economic losses...

AI Technical Summary

Problems solved by technology

Among them, the coal mining machine is one of the important equipment to realize the mechanization and modernization of coal mine production. It is a large and complex equipment integrating machinery, hydraulic pressure and electricity. Its working environment is harsh. If a failure occurs, the entire coal mining work will be interrupted. cause huge economic losses

The power supply of the shearer is from the moving substation in the tunnel of the roadway to the shearer laying cable power supply, wherein the cable is worn in the cable splint to protect the cable. In the existing coal mining method in our country, the cable splint and the shearer There is only logical interlocking of start and stop, no direction and load adjustment and coordination, and the cable splint often has problems such as jamming, serious reentry and jamming, etc. The problem is particularly prominent, causing the cable splints and cables of the coal mining machine in the working face to be easily crushed. Most coal mines have full-time guard cable workers, which affects the high-yield, efficient and safe production of the working face, and brings certain economic losses to the mine.

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