Electric hydraulic controlled caving coal method and it hydraulic supporter

A technology of electro-hydraulic control and hydraulic support, which is applied in the direction of mine roof supports, pillars/supports, earthwork drilling and mining, etc. It can solve the problems that affect the stability of support supports, cannot adjust the size of the coal discharge port, and cannot be well adapted. To achieve the effect of improving the control effect of coal discharge, adapting to the roof environment and avoiding the forward tilt of the support
CN1786420AActive Publication Date: 2006-06-14兖矿能源集团股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
兖矿能源集团股份有限公司
Publication Date
2006-06-14

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Abstract

The invention relates to coal mine synthesizing exploiting caving top coal technique. Electro-hydraulic control caving top coal method is adopted hydraulic support to finish support caving top coal each procedure. The hydraulic support is made up of low order caving top coal hydraulic support and electro-hydraulic control system. In the electro-hydraulic control system, top beam incline sensor is added. The flash board jack is adopted travel sensor. The length of the flash board is increased, and the size of the coal discharging is adjusted in order to keep top beam horizontal and increase supporting stability. The coal discharging method includes the following steps: top coal sufficient crashing: adopting single sequence sublevel discharging; top coal middling crashing: adopting the same; top coal difficult crashing: adopting double sequence sublevel discharging. The invention can increase coal discharging control type, improve caving top coal technique adaptability, and realize high yield and high efficiency.
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Description

Technical field

[0001] The invention relates to a fully-mechanized mining top-coal caving process and its supporting equipment, in particular to an electro-hydraulic control top-coal caving method and its hydraulic support suitable for fully-mechanized low-position top-coal caving working faces. Background technique

[0002] The 17th volume of China's "Utility Model Patent Bulletin", No. 8 discloses the patent that the name is "automatically controlled top-coal caving support", its patent number: ZL 00213572.8, publication number: CN 2420422Y. Its purpose is to provide an automatic control low-level coal caving hydraulic support that realizes electro-hydraulic program control; its composition is: an electro-hydraulic program control system is installed on the top-coal caving hydraulic support, a pressure sensor is installed on the column, a tail beam jack, The displacement jack is installed with a displacement sensor, and the plug-in jack is installed with a proximity switch...

Claims

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