A pick that can measure the temperature of the cutting head during the process of cutting coal and rock by mining machinery

Abstract

The invention discloses a cutting pick capable of measuring the temperature of a cutting head in a coal rock cutting process by a mining machine, which is also utilized as a temperature sensor when cutting coal rocks. The cutting pick comprises an alloy steel pick head and a pick body, wherein the alloy steel pick head and the pick body are made from different materials; a central hole communicated with the bottom of the pick head is formed in the lower end of the pick body, a conducting rod is inserted in the central hole and is jacked at the bottom of the pick head, the lengths of the conducting rod and the central hole are equal, an insulation layer is adhered to the inner surfaces of the conducting rod and the central hole, an inner conducting ring is embedded in an exposed end of the conducting rod, an outer conducting ring is embedded in the lower end part of the pick body, and the inner conducting ring and the outer conducting ring are respectively connected to a temperature signal collector through leads. The cutting pick capable of measuring the temperature of the cutting head in the coal rock cutting process by the mining machine applies a seebeck effect, converts a cutting pick temperature signal into a thermoelectromotive signal, and connects an electric meter to a closed circuit formed by the cutting pick body and a cutting pick core to convert the temperature of a to-be-detected medium, thereby realizing the monitoring on the temperature of the cutting pick in the cola rock cutting process by using the mining machine.

Description

technical field [0001] The invention relates to a pick that can measure the temperature of a cutting head, in particular to a pick that is suitable for measuring the temperature of the cutting head during the process of cutting coal and rock by mining machinery in underground coal mines. Background technique [0002] At present, the pick generally used on the shearer and the roadheader is the pick pick. The cutting of coal and rock by mining machinery is a process of friction between two different media materials, which will generate a lot of heat, which is manifested as a higher temperature on the pick. When the pick cuts different coal rocks, the hardness of the cut medium is different, and the temperature signals generated will be quite different. Scientific research and design personnel need to master and measure relevant temperature signals during the process of cutting coal and rock by mining machinery, so as to realize real-time control of cutting mines and identific...

AI Technical Summary

Problems solved by technology

However, the underground environment of coal mines is harsh and the industrial and mining conditions are complex, so it is difficult to measure the pick temperature accurately and directly by conventional methods

The commonly used pick temperature measurement methods are mostly direct contact measurement of temperature measuring elements, such as through thin-film thermocouples. Such temperature measuring elements are easily damaged during use, and accurate measurement and acquisition of temperature cannot be guaranteed. Therefore, It has always been a relatively difficult field to obtain the temperature of the pick during the process of cutting coal and rock by mining machinery

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