RAG Aktiengesellschaft Patent applications |
Patent application number | Title | Published |
20150069814 | FACE EQUIPMENT COMPRISING HOSE LEVELS PLACED ON THE SHIELD SUPPORT FRAMES OF SAID FACE EQUIPMENT - A face equipment for mechanical extraction in longwall mining, in particular in the underground hard coal mining industry, includes a face conveyor ( | 03-12-2015 |
20150061352 | FACE EQUIPMENT COMPRISING HOSE LEVELS PLACED BETWEEN THE FACE CONVEYOR AND THE SHIELD SUPPORT FRAMES - A face equipment for mechanical extraction in longwall mining, in particular in the underground hard coal mining industry, includes a face conveyor ( | 03-05-2015 |
20110163590 | Longwall Equipment Having Vertically Adjustable Disc Shearer Loader Guided on the Face Conveyor - Longwall equipment for mechanical extraction, especially in underground coal mining, including a face conveyor disposed along a longwall face, a disc shearer loader that includes a machine body that rests, and is guided, upon the face conveyor and includes two shearing discs pivotably disposed thereon, with the machine body extending over the face conveyor and forming a portal that prescribes a maximum loading cross-section of the face conveyor, a lifting mechanism mounted on the machine body for guiding it on the face conveyor in a vertically adjustable manner and for variably adjusting the portal cross-section, a drive element height-adjustably disposed on the machine body and engaging an abutment fixedly disposed on the face conveyor, and shield support units that include top canopies that project toward the disc shearer loader. | 07-07-2011 |
20110049964 | Method for Controlling Longwall Mining Operations - A method for controlling a longwall mining operation, including a face conveyor, at least one extraction machine, and a hydraulic shield support, in underground coal mining. Using inclination sensors disposed on at least three of the four main components of each shield support frame, such as floor skid, gob shield, support connection rods, and gob-side region of the top canopy, the inclination of the shield components relative to horizontal is ascertained in the direction of step. In a computer, the ascertained inclination data is compared with base data stored in the computer that defines the geometrical orientation of the components and their movement during stepping. From the comparison, a respective height of the shield support frame, at the forward end of the top canopy, is calculated as a measure for the face opening. | 03-03-2011 |
20110029138 | Method for Controlling Longwall Operations with Incorporation of Air-Technology and Climate-Technology Resources - A method for controlling the extraction capacity of longwall operations in underground coal mining, including ascertaining the respective demand of the longwall operations, for air-technology and climate-technology resources, as influencing variables for a projected delivery quantity on the basis of data applicable to equipment of the longwall operations and to mineral deposit parameters, and storing the ascertained influencing variables in a computer as target data. Actual data for a raw coal delivery quantity, for air flowing through, for the supplied cooling capacity, and for the exhaust gas during running operation is detected and conveyed to the computer. if an increased demand for resources is recognized, coverage is initiated via a changeover of excess resources available at other longwall operations or if a reduced demand for resources is recognized, excess resources are rerouted to other longwall operations experiencing corresponding demand deficiencies. | 02-03-2011 |
20110001348 | Method for Controlling Longwall Operations Using Boundary Layer Recognition - A method for controlling longwall mining operations, having a face conveyor, at least one extraction machine, and a hydraulic shield support, in underground coal mining. At least one sensor is disposed on the shield support frames for acquiring solid-borne noise data generated by the engagement of the extraction machine in coal and/or country rock. A cut of the extraction machine into the country rock is determined in a downstream computer on the basis of recorded vibration data that corresponds to the generated solid-borne noise. | 01-06-2011 |
20100327650 | Method for Automatically Creating a Defined Face Opening in Longwall Mining Operations - A method for automatically producing a defined face opening in a longwall mining operation, in underground coal mining, having a face conveyor, at least one extraction machine and hydraulic shield support frames. Inclination sensors are disposed on at least three of the four main components of each shield support frame, such as floor skid, gob shield, support connection rods and gob-side area of the top canopy. From ascertained inclination data, by comparison with base data defining a geometrical orientation of the components and a movement thereof during stepping, a respective shield height of the shield support frames perpendicular to a bed thereof is calculated. From further sensors on the extraction machine, a cutting height thereof is acquired as a face opening. In terms of a location-synchronous analysis, for possible adjustment purposes the cutting height is compared with the shield height when the shield support frame, which trails the extraction machine with a time delay, has reached the position to which relates that cutting height which was used in the comparison. | 12-30-2010 |
20100320827 | Method for the Controlled Maintaining of a Distance Between the Top Canopy and the Coal Face in Longwall Mining Operations - A method for maintaining, in a controlled manner, a top canopy/coal-face distance expedient for rock mechanics, in longwall mining operations in underground coal mining, using a face conveyor, at least one extraction machine, and a hydraulic shield support frame. Inclination sensors are disposed on at least three of the four main components of the shield support frame, including floor skid, gob shield, support connection rods and gob-side area of the top canopy. An inclination of the top canopy and floor skid are ascertained via the sensors. From the ascertained inclination data, in a computer, the effects on a top canopy/coal face distance are determined when changes in an angle of inclination of the top canopy occur. An automatic adjustment of decisive cycle parameters of the shield support frame are carried out, wherein the work cycle comprises retraction, advancement and setting processes. | 12-23-2010 |
20080279627 | Method and Apparatus for Introducing a Roadway Support - A roadway support ( | 11-13-2008 |