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Dynamic speed control system of coal mining machine for coal mine high-gas fully mechanized coal mining face

The technology of fully mechanized mining face and coal shearer is applied in the field of shearer speed dynamic control system, which can solve the problems of low coal output in high-gas mines, and achieve the advantages of improving the safety factor, increasing the production output of coal mines, and improving the level of automatic production. Effect

Active Publication Date: 2013-08-14
BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD +1
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Problems solved by technology

This directly leads to problems such as low coal production in high gas mines

Method used

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  • Dynamic speed control system of coal mining machine for coal mine high-gas fully mechanized coal mining face

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Embodiment Construction

[0013] See attached figure 1 , which describes the connection diagram of the automatic control system for automatic adjustment of the coal cutting speed according to the gas concentration of the fully mechanized coal mining face of the high-gas coal mine according to the present invention. It has the automatic control function of the coal cutting speed of the shearer according to the gas concentration parameters, and mainly includes the shearer, hydraulic support, support controller, pressure sensor, gas detector, signal converter and monitoring host.

[0014] The fully mechanized mining face includes multiple hydraulic supports, and each hydraulic support is equipped with a support controller, pressure sensor and gas detector, and the support controller on each support is electrically connected to the pressure sensor and gas detector of the support. connection, the pressure sensor is used to detect the pressure of the roof of the working face, and the gas detector is used to ...

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Abstract

The invention discloses a dynamic speed control system of a coal mining machine for a coal mine high-gas fully mechanized coal mining face. The dynamic speed control system comprises the coal mining machine, a plurality of hydraulic brackets, bracket controllers, pressure sensors, gas detectors, a signal converter and a monitoring host, wherein the fully mechanized coal mining face comprises the hydraulic brackets; one bracket controller, one pressure sensor and one gas detector are arranged on each hydraulic bracket; the signal converter is arranged on the hydraulic bracket at the end of the fully mechanized coal mining face; the bracket controller of each hydraulic bracket is connected with the signal converter, and working face top plate pressures and working face gas concentration data are transmitted to the monitoring host at a gate road by virtue of the signal converter; and the monitoring host is used for adjusting the speed of the coal mining machine according to the working face top plate pressures and the working face gas concentration data.

Description

technical field [0001] The invention relates to a shearer speed dynamic control system, in particular to a shearer speed dynamic control system and a control method for fully mechanized coal mine high-gas underground mining working faces. Background technique [0002] Major accidents such as frequent gas explosions in high-gas coal mines are mainly caused by the continuous production of coal mines when the gas exceeds the limit and is unsafe. During the production process, the shearer breaks the coal seam and releases the gas into the fully mechanized mining face. In a certain working face, the higher the operating speed of the shearer, the faster the gas release speed, and the faster the gas accumulation speed in the fully mechanized mining working area. Therefore, in order to ensure that the gas concentration at the working face does not exceed the standard, when the gas concentration at the working face reaches the upper limit, it is necessary to stop the shearer and wai...

Claims

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Application Information

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IPC IPC(8): E21C35/24E21D23/12
Inventor 牛剑峰李重重
Owner BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD
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