The invention relates to face equipment for mechanical extraction in longwall mining, in particular in underground coal mining, comprising a face conveyor (21) which is arranged along the mining wall, extraction means (22) which can be moved along the face conveyor (21), and shield support frames (10) supported on the face conveyor (21) at an angle thereto. The invention is characterized in that a hose level (17) which comprises a liquid-filled hose (18) is placed on individual shield support frames (10), said hose level (17) being placed between the roof canopy (13) of the shield and the floor skid (11) of the shield, in order to ascertain the shield height of the extended shield support frame (10), said shield height corresponding to the height of the face opening, and a pressure sensor (19) is arranged on the skid-side end of the hose (18). In addition to taking into consideration a longitudinal and/or transverse inclination of the shield support frame (10) when ascertaining the height, an inclination measuring arrangement (25) which allows the measurement of at least two tilting axes towards the horizontal is arranged on the roof canopy (13), and the pressure sensor (19) and the inclination measuring arrangement (25) are connected to an analyzing and control unit.
E21D 23/16 - Caractéristiques hydrauliques ou pneumatiques, p. ex. circuits, disposition ou adaptation de soupapes, dispositifs de mise en place ou de retrait
G01C 5/04 - Nivellement hydrostatique, c.-à-d. par des réservoirs à liquides interconnectés élastiquement, se trouvant en des points séparés
2.
FACE EQUIPMENT COMPRISING HOSE LEVELS PLACED BETWEEN THE FACE CONVEYOR AND THE SHIELD SUPPORT FRAMES
The invention relates to face equipment for mechanical extraction in longwall mining, in particular in underground coal mining, comprising a face conveyor (17) which is arranged along the mining wall, extraction means (18) which can be moved along the face conveyor (17), and shield support frames (10) supported on the face conveyor (17) at an angle thereto. The invention is characterized in that a hose level (21) which comprises a liquid-filled hose (22) is placed in the region of the face conveyor (17) on individual support frames (10), said hose level (21) being placed between the face conveyor (17) and at least one main component of the shield support frame (10), in order to ascertain the height of the face opening, and a pressure sensor (23, 24, 28) is placed at at least one end of the hose (22). In addition to taking into consideration a longitudinal and/or transverse inclination of the face conveyor (17) and of the main component of the shield support frame (10) when ascertaining the face height, the face conveyor (17) and the shield support frame (10) main component which has the hose-level end are each equipped with an inclination measuring arrangement (25, 26) which allows the measurement of at least two tilting axes towards the horizontal, and the pressure sensor (23, 24, 28) and the inclination measuring arrangements (25, 26) are connected to an analyzing and control unit.
E21D 23/16 - Caractéristiques hydrauliques ou pneumatiques, p. ex. circuits, disposition ou adaptation de soupapes, dispositifs de mise en place ou de retrait
G01C 5/04 - Nivellement hydrostatique, c.-à-d. par des réservoirs à liquides interconnectés élastiquement, se trouvant en des points séparés
3.
METHOD FOR MONITORING AN AUTOMATED SEQUENCE OF MOVEMENTS OF A MINING SHIELD USED IN UNDERGROUND MINING
The invention relates to a method for monitoring an automated sequence of movements of a mining shield which is used in underground mining, which has at least one skid and a canopy, and which is attached to a longwall conveyor by means of a walking mechanism connected to the mining shield, said longwall conveyor being installed along a mine face. At least one acceleration sensor is arranged on the mining shield. The invention is characterized in that an acceleration profile (20) with a high positive acceleration value (20a) at the beginning of the advancing movement and a high negative acceleration value (20b) at the end of the advancing movement, said acceleration value (20b) being negative so as to have a decelerating effect, is stored in an analyzing device, wherein the acceleration profile is typical for the advancing movement of the mining shield (10) on the longwall conveyor (18) and is based on the walking path of the advancing movement. The acceleration values which are captured by the acceleration sensor are transmitted into the analyzing device during the advancing process of the mining shield (10) and compared with the stored acceleration profile (20). If the respective high acceleration values (20a, 20b) are absent from the measured acceleration profile (21), a detachment between the walking mechanism (19) and the longwall conveyor (18) is registered.
E21C 35/14 - Équipement pour pousser le convoyeur vers le front de taille
E21D 23/12 - Commande, p. ex. en utilisant une télécommande
4.
FACE EQUIPMENT WITH A HYDROSTATIC TUBE BALANCE INSTALLED THEREON AND INTENDED FOR DETERMINING THE HEIGHT POSITION OF INDIVIDUAL ELEMENTS OF THE FACE EQUIPMENT
Face equipment for mechanical extraction in longwall mining, in particular in underground coal mining, having a face conveyor arranged along the mine face, having an extraction means which can be displaced along the face conveyor, and having shield‑support units attached to the face conveyor at an angle thereto, is characterized in that, for the purpose of determining the absolute height position of predetermined elements of the face equipment, a liquid‑filled hydrostatic tube balance (17) is installed along the mine face (10), on the selected elements (12, 15, 31) of the face equipment, and is connected to a base station (19), which has its height determined precisely as a reference point and is arranged in one of the counter heads (13, 14), wherein, distributed between individual elements (12, 15, 31) of the face equipment over the course of the face equipment, pressure sensors (22) are linked into the tube conduit (18, 23, 24) of the hydrostatic tube balance (17) and are connected to a central evaluation and control unit.
E21D 23/00 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci
G01C 5/04 - Nivellement hydrostatique, c.-à-d. par des réservoirs à liquides interconnectés élastiquement, se trouvant en des points séparés
5.
CONTROL OF EXTRACTION WORK IN UNDERGROUND COAL MINING BY MEANS OF A LASER MEASUREMENT DEVICE
A method for controlling face operations, comprising a face conveyor (17), at least one extraction machine and a hydraulic shield support (10), in underground coal mining, in which the stratigraphic sequence at the face (19) of the face operation are determined by means of a laser measurement device (31) which is designed to measure inclinations and distances and is to be arranged within the face equipment, wherein the laser measurement device (31) used at different locations along the face is directed towards the face (19) for each measurement and subsequently directed in succession towards the strata boundaries, which can be discerned visually in the face (19), such as the strata boundary (29) between the hanging roof (23) and the coal (20), the strata boundaries (28) of mining strips (21), which are embedded in the coal seam, with respect to the coal (20) and the strata boundary (27) between the coal (20) and the floor (22), and the inclination angle and the respective distance of the laser measurement device (31) from the strata boundary that can be discerned in the face (19) are determined with regard to the located strata boundaries, and wherein the height, normal to the bed, of the strata that appear at the face (19) is calculated from the measured inclination and distance values and is used to control the extraction and removal work.
Face equipment for mechanized longwall mining, in particular underground coal mining, comprising a face conveyor which is arranged along the working face, a mining means which can travel along the face conveyor, and shield support units which are arranged at an angle to the face conveyor and are connected to the face conveyor by means of correspondingly attached pushing rams, wherein an inertial navigation system for establishing absolute position coordinates at a multiplicity of points along the course of the face conveyor and an evaluation system for providing an image of the position of the face conveyor in the face area are associated with the face conveyor, is characterized in that on the side of the face conveyor (10) facing away from the working face, a separate running channel (14) formed by a housing is arranged to allow a carriage to pass therethrough. Said carriage supports an inertial measuring unit, is connected, by traction means attached thereto, to a drive (22) arranged at least at one end of the coal face, and can travel along the face conveyor (10).
The invention relates to a method for automatically producing a defined face opening during longwall operations, having a face conveyor (20), at least one extraction machine (22), and a hydraulic shield support, in underground coal mining. The slope of the shield components relative to the horizontal plane is detected by means of inclination sensors (17) mounted on at least three of the four main components of the shield support frame (10), and the shield height of the shield support frame (10) is calculated therefrom in a computer unit, said shield height being perpendicular to the bed in each case. The cutting depth of the cutter loader (22) is determined by capturing the stepping path of each shield support frame during each extraction run. Furthermore, the cutting height of the cutter loader (22) is acquired, wherein the angle of the roof level is ascertained via the geometry of the longwall to each shield support frame (10), said geometry being calculated based on the obtained data, and the cutting height of the cutter loader (22) is adjusted in alignment with the angle of the roof level to produce the defined face opening.
E21D 23/03 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci comportant des moyens de protection, p. ex. des boucliers, pour prévenir ou retenir des éboulements dans l'enceinte de travail ou dans le soutènement proprement dit
E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
8.
METHOD FOR THE AUTOMATED PRODUCTION OF A DEFINED FACE OPENING BY MEANS OF SLOPE-ASSISTED RADAR NAVIGATION OF THE ROLLER OF A ROLLER CUTTER LOADER
The invention relates to a method for the automated production of a defined face opening for longwall mining operations comprising a face conveyor (23), a roller cutter loader (13) as an extraction machine, and a hydraulic shield support (25) in underground coal mining, wherein the distance (22) between the top edge of the roller base body (14) and the bottom side of the slope end cap (28) of the shield support (25) below which the extraction work takes place is measured by means of at least one radar sensor (18) mounted on the roller base body (14) of the roller cutter loader (13), and said measured distance is entered into a computer as the actual value of the passage height (22) of the roller cutter loader (13) under the shield support and is then compared to a target value stored in said computer, wherein control commands for adapting the cutting height of at least one of the two cutting rollers (16a; b) of the roller cutter loader (13) are generated if a deviation is determined.
E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
E21D 23/00 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci
E21D 23/12 - Commande, p. ex. en utilisant une télécommande
9.
METHOD FOR CONTROLLING THE CUTTING DEPTH OF SHEARERS
The invention relates to a method for controlling the cutting depth of the drums of shearers used as recovery equipment in underground coal mining, according to which method the cut of the drums into the country wall is detected by means of measured values and the cutting depth of the drums is adjusted by control signals derived from the measured values. The invention is characterised in that during the recovery operation, the current consumption (ISM) of the cutting motors that drive the drums and the travelling speed of the shearer (VM) are detected as measured values and the respective specific cutting energy (ESP) is measured in a computer as the ratio of the current consumption (ISM) to the travelling speed (VM). A respective characteristic value for the specific cutting energy (ESP) is determined for different mining conditions in accordance with the resistance of the coal to be recovered and the outcrop of the country wall. Once this value has been exceeded, a cut is made by the drum in the country wall and corresponding control signals for correcting the cutting depth of the drum are generated.
The invention relates to a method for adjusting an automatic level control of the plane in longwall operations, wherein the plane can be adjusted by means of a boom control into a climbing motion, dropping motion, or neutral motion, wherein the cutting depth (21) and the control angle (20) derived as the differential angle between the slope of the face end cap (11) of the shield support frame (10) and the slope of the longwall transport (16) in the working face direction are captured and the longwall height change per planing stroke is calculated therefrom, such that each longwall position of the longwall conveyor (16) is associated with a longwall height as a planning height, and wherein the actual height of the longwall is calculated on the basis of the values captured by the slope sensors (15) mounted on the shield support frame (10) whenever each longwall position is reached by a shield support frame (10) of the shield support following after the plane (17), and is compared to the stored planned height, and wherein a height differential value (28) between the planned height and the actual height determined for each longwall position is taken into consideration in subsequent planing strokes by the calculating unit in the sense of a self-learning effect when the control angle (20) to be set for the plane (17) for achieving a planned height is prescribed.
E21D 23/03 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci comportant des moyens de protection, p. ex. des boucliers, pour prévenir ou retenir des éboulements dans l'enceinte de travail ou dans le soutènement proprement dit
E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
11.
Method of controlling the conveyance of product in underground mining operations
A method of controlling conveyance of the debris, extracted by working machines in underground mining operations, via conveyors and bunker units. The lowest available conveying capacity of the conveyors and buffer capacity of the bunker units are determined based on continuously detected actual data and are compared in a computer-aided control unit to at least one of current actual extraction output, anticipated target extraction output, and scheduled output extrapolated from past actual data. Upon detection of deviations, the control unit automatically effects a balancing of capacities between the conveyors and bunker units connected at an output side of each individual different working machine, taking into consideration their maximum conveying capacity and buffer capacity respectively, and/or controls the extraction output of the working machines taking into consideration respectively available conveying capacity of downstream conveyors and buffer capacity of the bunker units.
E21F 13/04 - Transport spécialement adapté aux conditions du fond dans les plans inclinésTransport spécialement adapté aux conditions du fond dans bures ou puits inclinés
12.
METHOD FOR CONTROLLING MINING IN LONGWALL FACE OPERATIONS BY MONITORING THE REFUSE PART IN THE EXTRACTION
The invention relates to a method for controlling mining in longwall face operations involving a longwall conveyor (11), a shearer loader (12), and a hydraulic shield-type support (13), in subsurface hard coal mining. According to said method, the refuse part in the quantity of raw coal transported away from the face is determined by means of a measuring device arranged in the downstream drift region, and the nominal raw coal yield from the longwall face is calculated on a computer, for an individual location of a shearer loader (12) on the longwall face, and is converted into a load of the longwall conveyor (11), corresponding to a loading section associated with the location of the shearer loader (12). Then, the time of the passage of each loading section associated with a specific location of the shearer loader (12) and the actual raw coal yield and the refuse part therein for the respective loading section in the measuring device (18) are calculated such that longwall face areas yielding a higher or lower amount of refuse are shown as a result of the refuse parts associated with the continually changing locations of the shearer loader (12) along the face, and measures are taken to adapt the control of the mining work.
E21C 35/00 - Détails ou accessoires de machines pratiquant des saignées ou libérant complètement la matière minérale de la veine, non prévus dans les groupes , ou
The invention relates to longwall equipment for mechanical extraction, particularly in underground coal mining, having a longwall conveyor (20) disposed in longitudinal direction of the longwall face, comprising a cutter loader (21) that may be moved on the longwall conveyor, and having shield modules comprising slope end caps (13) projecting toward the cutter loader and disposed at an angle to the longwall conveyor, wherein the cutter loader has a machine body (25) supported on the longwall conveyor and guided thereon, said machine body comprising two longwall rollers (22, 23) supported thereon and disposed on the machine body in a swinging motion, and wherein the machine body, which overlaps the longwall conveyor, forms a portal for determining the maximum loading cross-section of the longwall conveyor, characterized in that the machine body (25) of the cutter loader (21) is guided on the longwall conveyor (20) in a height adjustable manner for the variable adjustment of the portal cross-section (26) of the machine body by means of a lifting device mounted thereon, and the drive element (40) disposed on the machine body (25) and engaging into a counter bearing (36) configured on the longwall conveyor (20) in a fixed manner is disposed on the machine body (25) in a height adjustable manner.
E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet
E21D 23/00 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci
E21D 23/03 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci comportant des moyens de protection, p. ex. des boucliers, pour prévenir ou retenir des éboulements dans l'enceinte de travail ou dans le soutènement proprement dit
14.
METHOD FOR DETERMINING THE POSITION AND LOCATION OF MINE SPACES AND/OR EQUIPMENT UTILIZING RFID TECHNOLOGY
The invention relates to a method for determining the position and location of parts of mine spaces and/or machine equipment utilized therein, particularly in underground coal mining, characterized in that, by utilizing RFID technology, monitoring transponders having identification data are installed at fixed points of the mine layout and/or at equipment to be determined, and local base stations in the form of transmitter/receiver stations are associated with the monitoring transponders, said base stations detecting the signal propagation delays between the base stations and the monitoring transponders, and for detecting the identification data thereof, wherein reference transponders having been measured by mine surveyors are associated with the individual base stations at the positions thereof, and that the data received by the base stations is transmitted to a computer in which an exact image of the mine space and/or of the position of the machine equipment is generated.
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
G01S 13/74 - Systèmes utilisant la reradiation d'ondes radio, p. ex. du type radar secondaireSystèmes analogues
E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme
15.
METHOD FOR THE MONITORING AND AUTOMATED CONTROL OF SUB-PROCESSES IN UNDERGROUND COAL MINING
The invention relates to a method for the monitoring and automated control of the sub-processes linked in underground coal mining for coal production, such as extraction, product drawing, maintenance, logistics, and ventilation, wherein the actual data of factors relevant for the sub-processes are captured using associated sensors and in at least one processor unit are compared to target data that is stored there and has been determined for the sub-processes and the factors thereof as part of the planning process, wherein if variances between the target and actual data are found, the factors crucial for the sub-processes are automatically controlled on the basis of algorithms stored in the processor unit in order to achieve the specified target values, and the algorithms are set up such that the factors in question are modified only to such an extent that the change of individual factors does not result in admissible overstepping of the target data for further factors to be attributed to the sub-process in question and/or for further sub-processes associated with said sub-process.
G05B 19/418 - Commande totale d'usine, c.-à-d. commande centralisée de plusieurs machines, p. ex. commande numérique directe ou distribuée [DNC], systèmes d'ateliers flexibles [FMS], systèmes de fabrication intégrés [IMS], productique [CIM]
G05B 13/04 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé électriques impliquant l'usage de modèles ou de simulateurs
The invention relates to a pressure-tight encapsulated electrical device for use in explosion-prone areas, provided with an exchangeable power supply, characterized in that the power supply in the form of accumulator cells is disposed in a pressure-tight encapsulated housing, which can be inserted into a holder in the device that complements the housing shape such that the device and housing in the ready-to-use state form a pressure-tight encapsulated unit, and that on the inside of the housing a switch unit activating and/or deactivating the power supply is provided, which can only be actuated by a switch member disposed in a stationary manner in the holder in the device when the ready-to-use state has been established.
Disclosed is a method for controlling longwall coal mining operations comprising a face conveyor (20), at least one extraction machine (22), and a hydraulic shield support. In said method, at least one sensor (17) is arranged on the shield support frames (10) in order to sense solid-borne noise data generated by the intervention of the extraction machine (21) in coal (35) and/or country rock (28, 29), and a cut of the extraction machine (22) into the country rock (28, 29) is determined in a computer unit that is connected thereafter on the basis of the recorded oscillation data corresponding to the generated solid-borne noise.
E21C 25/56 - Exécution des saignées par chaînes ou câbles coupants ou par outils tirés le long du front de taille par des câbles ou similaires, dans chaque cas guidés parallèlement à ce front, p. ex. par un convoyeur ou par un guide parallèle, à un convoyeur
E21D 23/12 - Commande, p. ex. en utilisant une télécommande
E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet
E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
18.
METHOD FOR AUTOMATICALLY CREATING A DEFINED FACE OPENING IN LONGWALL COAL MINING OPERATIONS
Disclosed is a method for automatically creating a defined face opening in longwall coal mining operations comprising a face conveyor (20), at least one extraction machine (22), and a hydraulic shield support. In said method, the inclination of the shield components relative to the horizontal line is determined by means of inclination sensors (17) mounted on at least three of the four main components of the shield support frame (10), the shield height (31) of the shield support frame (10) perpendicular to the bed is calculated in a computer unit, and the cutting height (32) of the extraction machine (22) is detected as the face opening, the cutting height (32) of the extraction machine (22) being adjusted to the shield height (31) of the shield support frame (10) by means of a locally synchronous evaluation.
E21C 35/14 - Équipement pour pousser le convoyeur vers le front de taille
E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet
E21D 23/00 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci
E21D 23/12 - Commande, p. ex. en utilisant une télécommande
Disclosed is a method for controlling longwall coal mining operations comprising a face conveyor (20), at least one extraction machine (22), and a hydraulic shield support. In said method, the inclination of the shield components relative to the horizontal line in the direction of advance is determined by means of inclination sensors (17) mounted on at least three of the four main components of each shield support frame (10), such as the floor skid (11), the gob shield (14), the supporting connection rods (16), and in the gob zone of the top canopy (13), and the height (h1) of the shield support frame (10) perpendicular to the bed at the forward end of the top canopy (13) is calculated as a measure of the face opening (30) from the measured data in a computer unit by comparing said measured data with the basic data that is stored in the computer unit and defines the geometrical orientation of the components and the movement thereof during the advance.
E21C 25/56 - Exécution des saignées par chaînes ou câbles coupants ou par outils tirés le long du front de taille par des câbles ou similaires, dans chaque cas guidés parallèlement à ce front, p. ex. par un convoyeur ou par un guide parallèle, à un convoyeur
E21D 23/00 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci
20.
METHOD FOR THE CONTROLLED MAINTAINING OF A DISTANCE BETWEEN THE ROOF AND THE FACE IN LONGWALL MINING OPERATIONS
Disclosed is a method for the controlled maintaining of a mechanically favorable distance (33) between the roof and the face in longwall coal mining operations comprising a face conveyor (20), at least one extraction machine (22), and a hydraulic shield support. In said method, the inclination of the top canopy (13) and the floor skid (11) in the mining direction is determined by means of inclination sensors (17) mounted on at least three of the four main components of each shield support frame (10), such as the floor skid (11), the gob shield (14), the supporting connection rods (16), and in the gob zone of the top canopy (13), the effects on the distance (33) between the roof and the face are determined in a computer unit on the basis of the measured data when the angle of inclination of the top canopy (13) changes, and the parameters that are crucial for the working cycle of the shield support frame (10) are automatically adjusted, said working cycle consisting of a retracting, advancing, and setting process.
E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet
E21D 23/00 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci
E21D 23/03 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci comportant des moyens de protection, p. ex. des boucliers, pour prévenir ou retenir des éboulements dans l'enceinte de travail ou dans le soutènement proprement dit
21.
METHOD FOR STABILIZING THE SHIELD COLUMN IN A LONGWALL MINING OPERATION CONDUCTED ALONG THE SEAM SLOPE
Disclosed is a method for stabilizing longwall coal mining operations that comprise a face conveyor, at least one extraction machine, and a hydraulic shield support and are conducted along the slope of the seam. In said method, the inclination of the shield support frames (10) is determined in the mining direction and transverse to the mining direction by means of inclination sensors (17) mounted on at least three of the four main components of each shield support frame (10), such as the floor skid (11), the gob shield (14), the supporting connection rods (16), and in the gob zone of the top canopy (13), the average slope of the shield column (30) formed by the individual shield support frames (10) is calculated, and the degree of a required forward-leaning position (35) of the bottom main drive along the slope relative to the top auxiliary drive of the face conveyor is then determined by taking into account the condition of the roof and the bed (36) as well as the operational data of the shield support frames (10) in order to compensate the downhill force applied by the shield column (30) in accordance with the determined slope.
E21C 25/56 - Exécution des saignées par chaînes ou câbles coupants ou par outils tirés le long du front de taille par des câbles ou similaires, dans chaque cas guidés parallèlement à ce front, p. ex. par un convoyeur ou par un guide parallèle, à un convoyeur
E21D 23/00 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci
E21D 23/12 - Commande, p. ex. en utilisant une télécommande
22.
METHOD FOR CONTROLLING LONGWALL MINING OPERATIONS, TAKING INTO ACCOUNT AIR AND AIR CONDITIONING RESOURCES
Disclosed is a method for controlling the yield of longwall coal mining operations. In said method, the demand of each longwall operation for air and air conditioning resources, i.e. the air to be supplied, the cooling power to be made available by cooling systems used, and the gas aspiration to be installed, is determined as variables influencing an expected yield in the form of desired data to be stored in a computer unit, said demand being determined based on the data to be specified for the machinery required for the longwall operations and the deposit parameters applicable to the face areas to be mined by each longwall operation, and the actual data for the quantity of extracted raw coal, the air flowing through each longwall operation, the supplied cooling power, and the gas aspiration is acquired during the extraction process by means of installed sensors and is fed to the computer unit. When a demand for additional air and air conditioning resources is identified, said demand is met by redirecting excess resources available in other longwall operations, and when a smaller demand is identified, excess resources are redirected to other longwall operations having a shortage of needed resources.
Disclosed is a method for automatically creating a defined face opening in longwall coal mining operations comprising a face conveyor (20), at least one plow (22) that is guided on the face conveyor (20) as an extraction machine, and a hydraulic shield support. In said method, the inclination of the shield components relative to the horizontal line is determined by means of inclination sensors (17) mounted on at least three of the four main components of each shield support frame (10), the shield height of the shield support frame (10) perpendicular to the bed is calculated in a computer unit, the determined shield height is adjusted to the cutting height of the plow (22), and a vertical adjustment of the plow (22) is initiated in order to correct identified differences, said vertical adjustment to be performed by means of a boom controller (26) that is arranged between the shield support frame (10) and the face conveyor (20).
E21C 35/14 - Équipement pour pousser le convoyeur vers le front de taille
E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
E21D 23/00 - Soutènements du toit dans les mines pour déplacement pas à pas, p. ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci
E21D 23/12 - Commande, p. ex. en utilisant une télécommande
The invention relates to a tensile-force limiter for the use in particular for recovering heavy sensitive loads, comprising a housing (2), at one end of which is provided a deflecting roller (8) for the traction means and at the opposite end of which is provided a stop element designed as a fork head (49) and in the interior of which is arranged a connecting rod (3) which can be moved axially together with the fork head and is retained in a centred position, with an adjustable retaining force, by a plurality of individually actuable switching elements (A-E) which interact in pairs in each case and are fastened on the housing.
The invention relates to a method for handling transport events from above-ground and/or underground loading to demand sites in underground mining that are subject to frequent location changes, such as heading and extraction operations and also assembly and disassembly operations, wherein in a computer-based control unit all transport paths available in the mining building, including the status data influencing the transport capacities, the transport means movable along the transport paths, transport containers with the respective capacity data and locations above-ground and underground, and also the respective schedules, are recorded, and wherein the control unit for the transport events to be handled automatically generates a path and a schedule for a selected transport means, said path and schedule being adapted to the respective operating situation based on the recorded data while taking the weight and dimensions into consideration, triggers unmanned transport means, or transmits associated communication means to the operator of a selected transport means.
The invention relates to a method for monitoring and controlling machine resources and/or installations and/or components thereof forming autonomous technical elements in underground mining. According to the invention, the resources and/or installations and/or components are connected via data lines to a computing unit, in which characteristic data relative to each single resource or installation or individual component is detected and stored. In the course of the operation, process data relative to resources, installations or components are continuously acquired and processed in the computing unit, wherein the computing unit determines and/or displays planned maintenance times for the respective resource and/or installation and/or component based on the evaluation of the collected process data. In the event of apparent overload and/or occurring faults, the computing unit causes a reduction of the respective loading of the resource and/or installation and/or component, which is adapted to the degree of overload and/or faults, by means of autonomously generated control commands.
The invention relates to a supply line strand (8) for extraction machines, in particular for a cutter loader (2) used in underground mining. Said supply line strand comprises at least one feed line for electric energy (10), and a feed and return line for spray water and cool water (9). Said supply line strand is characterised in that the lines (9, 10) are completely embedded in an elastomer cover (14) at a fixed distance in relation to each other.
A method of controlling conveyance of the debris, extracted by working machines in underground mining operations, via conveyors and bunker units. The lowest available conveying capacity of the conveyors and buffer capacity of the bunker units are determined based on continuously detected actual data and are compared in a computer-aided control unit to at least one of current actual extraction output, anticipated target extraction output, and scheduled output extrapolated from past actual data. Upon detection of deviations, the control unit automatically effects a balancing of capacities between the conveyors and bunker units connected at an output side of each individual different working machine, taking into consideration their maximum conveying capacity and buffer capacity respectively, and/or controls the extraction output of the working machines taking into consideration respectively available conveying capacity of downstream conveyors and buffer capacity of the bunker units.
E21F 13/04 - Transport spécialement adapté aux conditions du fond dans les plans inclinésTransport spécialement adapté aux conditions du fond dans bures ou puits inclinés
29.
METHOD FOR CONTROLLING THE PRODUCT CONVEYANCE IN UNDERGROUND MINING
The invention relates to a method for controlling the outward conveyance of debris extracted by mining machines operating in underground mining in a variety of locations of the mine structure via conveying means and bunker systems disposed in the mine structure, wherein the lowest available conveying capacity of the conveying means and the buffer capacity of the bunker systems are determined based on continuously captured actual data, and are compared in a computer-aided control unit to the current actual extraction output and/or the target extraction output anticipated for a predefined time period and/or the budgeted output extrapolated based on past actual data, wherein, if deviations are detected, the control unit automatically brings about a balancing of capacities between the individual conveying means and bunker systems, and/or controls the extraction output while taking the conveying capacity of the downstream conveying means and buffer capacity of the bunker systems into consideration.
E21F 13/04 - Transport spécialement adapté aux conditions du fond dans les plans inclinésTransport spécialement adapté aux conditions du fond dans bures ou puits inclinés
30.
DECENTRALIZED POWER SUPPLY UNIT FOR USE IN UNDERGROUND COAL MINING OPERATIONS
Decentralized power supply unit for use in underground coal mining operations and operating machine connected thereto, wherein the power supply unit is composed of a transport frame (10) which can be moved along the floor of underground mine spaces, of a diesel engine (12) forming a drive unit which is arranged on said frame, of a hydraulic pump (14) which can be coupled to the diesel engine (12), including a tank (15) for the hydraulic fluid, of a generator which can be coupled to the diesel engine (12), of a compressed-air compressor (19) which can be coupled to the diesel engine (12), including a connected compressed-air accumulator (20), and of a control unit (18) with its own assigned current supply, and wherein the hydraulic pump (14) arranged on the transport frame (10) can be connected via a hoseline to the operating machine equipped with a hydraulic drive for its operating functions.
Method of sealing a coke oven charging hole sealed with a lid by using a metering means to pour a sealant into the annular gap. The metering means has a metering tip which is positioned above a selected point of the annular gap and which, during the pouring of the sealant, remains at this selected point, the pouring of the sealant taking place simultaneously with the turning-in of the lid, and the sealant being distributed over the annular gap by the rotation of the lid. Means of implementing this method, comprising a reservoir vessel for the sealant, at least one pump and a line system for conveying the sealant, and at least one metering tip from which the sealant emerges over the annular gap, the metering tip having a length of 2 to 20 cm and having a non-return valve at the end of which it attaches to the line system.
The invention relates to a WLAN access device (1) for application in mines with hazardous gases, comprising a central unit (10) with at least one standard WLAN access point (3) with corresponding frequency range, each with a standard Ethernet switch (4), at least one medium converter (7) with a transceiver module (13) for conversion of internally applied electrical Ethernet signals into optical signals transported via an optic fibre, protective circuits for power supply and externally arranged antennae as well as further optional electronic modules, said standard components being intrinsically-safely encapsulated in the central unit by casting and said central unit is housed in an intrinsically-safe certificated housing that has an additional connector chamber for the optic fibres, an external intrinsically-safe power supply and the antenna cables.
The invention relates to a method and a device for cleaning the door of a coke oven, said door comprising a sealing edge and a membrane that is attached to the door panel of the coke oven. According to said method, cleaning tools comprising jet nozzles, which are supplied with a flow medium at high pressure, are situated and displaced back and forth in the region between the sealing edge and the door panel of the coke oven, in such a way that the interior surface of the membrane and the sealing edge are cleaned. The coke oven door is cleaned directly after the coke oven chamber is opened, by at least one jet nozzle element, which is supplied with compressed air and is displaced along the sealing edges. The jet nozzles are oriented in such a way that the air hits the surface to be cleaned at an acute angle.
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