Abstract: A control device for electrohydrualic support controllers, with an electronic individual controller including a plug board that contains first connecting pieces, a terminal block that is mounted to a corresponding support frame and includes recesses for holding second connecting pieces, plug-in connectors for connecting cables for communicating with adjacent controllers, and at least one external power supply. A connecting plug, to which the lamp can be connected with its connecting cable, is attached to the terminal block.

Abstract: The present invention is an individual controller for shield support frames in underground mining, having a shallow box-shaped housing for holding microelectronics comprising a top wall, a bottom wall, two side walls, a front wall and a back wall, with receptacles for connecting cable plugs from sensors and actuators and with at least one socket for connecting a plug of a cable for communicating with an adjacent individual controller.

Abstract: A sheathed cable for underground mining, comprising a flexible sheath (2) containing armouring (3) and receiving the electric conductors (4), a cable connector (30) being mounted on one end of the sheathed cable and comprising a one-part hollow coupling sleeve (31) which engages over the sheath (2) and receives the end of the sheathed cable in tension-resistant manner in a compression joint and also comprises a plug insert (32) connected to the sleeve (31) by a snap-in connection and receiving contact elements preferably in the form of pins (36) and sockets (37) electrically connected to the conductors (4), wherein a cable feed-through opening (39) in the hollow coupling sleeve (31) is partly filled with sealing compound (38), wherein the coupling sleeve (31) has a continuation (34) which is deformable in order to make the compression joint and exclusively receives the sheathed cable (1), sheath (2), conductors (4) and armouring (3).

Abstract: A controller is disclosed for control operations in underground mining, especially for controllers to control support shields. The controller utilizes a central unit with a microprocessor and assigned, programmable memory devices for the storage and processing of software as well as a connector unit with connectors or circuits for communication between the controller and other controllers and/or actuators, sensors or the like, that are to be controlled with the controller. Both the central unit and the connector unit utilize a modular design. A collection of modules with different performances and/or functionalities are provided for both the central unit and the connector unit to form the hardware of a controller. The modules can be combined with one another and coupled together according to a modular concept.

Abstract: The invention relates to a control device for electrohydraulic support controllers, with an electronic individual controller 10 comprising a plug board 7 that contains first connecting pieces 8, with a terminal block 20 that is mounted to the corresponding support frame and comprises recesses 13 for holding second connecting pieces 12, 14, with plug-in connectors for connecting cables 15 for communicating with adjacent controllers, and with at least one external intrinsically safe power supply. In order to minimize wiring efforts, a connecting plug 32, to which the lamp can be connected with its connecting cable 31, is attached to the terminal block 20.

Abstract: The invention concerns a mining lamp 1 with a signal display. The mining lamp 1 is characterised in that it includes a large number of light diodes 3 and a control device 9, by means of which the light diodes 3 can be controlled individually or in groups, in order to display symbols, flashing signals, letters, text, patterns and/or similar.

Abstract: A sensor for devices such as mining machines, shaft-lining supports or extracting plants in underground mining, comprising a sensor device (15) disposed in a casing (11) and scanning measurements or variables and converting them into electric signals, also comprising a connecting element (26) in the form of a plug or socket fixed to the sensor casing (11) and adapted to be coupled to a receiving connection on the device and through which the sensor device (15) is supplied with the measurement or variable, and also comprising a flexible sheathed cable (1) comprising conductors (4) and a sheath (2), the sensor device (15) being electrically connectable via the conductors (4) to an evaluating device, in which the sensor casing (11) comprises a portion (13) with a cable insertion opening (20) to which the sheathed cable (1) is fastened in tension-resistant manner, wherein the conductors (4) are firmly connected through the cable insertion opening to the sensor device (15).

Abstract: A sheathed cable for underground mining, comprising a flexible sheath (2) containing armouring (3) and receiving the electric conductors (4), a cable connector (30) being mounted on one end of the sheathed cable and comprising a one-part hollow coupling sleeve (31) which engages over the sheath (2) and receives the end of the sheathed cable in tension-resistant manner in a compression joint and also comprises a plug insert (32) connected to the sleeve (31) by a snap-in connection and receiving contact elements preferably in the form of pins (36) and sockets (37) electrically connected to the conductors (4), wherein a cable feed-through opening (39) in the hollow coupling sleeve (31) is partly filled with sealing compound (38), wherein the coupling sleeve (31) has a continuation (34) which is deformable in order to make the compression joint and exclusively receives the sheathed cable (1), sheath (2), conductors (4) and armouring (3).

Abstract: The pressure cell device according to the invention serves for measuring hydraulic pressures in hydraulic mining devices in an inherently secure service region. It is provided with a connection element which can be connected to a pressure reception connection and with a sensor housing, on the inside of which is arranged a hydroelectric pressure transducer which is pressurised by the hydraulic pressure present at the pressure reception connection and converts this into an electrical signal. So as to ensure high measurement accuracy over a long operating period, without it being necessary to have exchanges of the pressure transducer or its new calibration, it is provided according to the invention that the pressure transducer comprises a ceramic pressure measuring cell.

Abstract: The present invention is an individual controller for shield support frames in underground mining, having a shallow box-shaped housing for holding microelectronics comprising a top wall, a bottom wall, two side walls, a front wall and a back wall, with receptacles for connecting cable plugs from sensors and actuators and with at least one socket for connecting a plug of a cable for communicating with an adjacent individual controller.

Abstract: Longwall face equipment for use in extraction in underground mining, comprising electrohydraulically operated support units each having a support controller 6, with at least one power unit being provided that supplies at least two support controllers 6 of differing support units with power, and with a bi-directional coupler being connected between the power unit and the at least two support controllers 6 and providing galvanic isolation between the power unit and the support controllers 6 and/or groups I, II of support controllers 6. The couplers permit communication between the two support controllers 6 and/or groups I, II of support controllers. In order to simplify the arrangement of the face, the coupler 12 is integrated into the power unit 11 or is flanged directly onto the housing of the power unit.

Abstract: A controller is disclosed for control operations in underground mining, especially for controllers to control support shields. The controller utilizes a central unit with a microprocessor and assigned, programmable memory devices for the storage and processing of software as well as a connector unit with connectors or circuits for communication between the controller and other controllers and/or actuators, sensors or the like, that are to be controlled with the controller. Both the central unit and the connector unit utilize a modular design. A collection of modules with different performances and/or functionalities are provided for both the central unit and the connector unit to form the hardware of a controller. The modules can be combined with one another and coupled together according to a modular concept.

Abstract: The pressure cell device according to the invention serves for measuring hydraulic pressures in hydraulic mining devices in an inherently secure service region. It is provided with a connection element which can be connected to a pressure reception connection and with a sensor housing, on the inside of which is arranged a hydroelectric pressure transducer which is pressurised by the hydraulic pressure present at the pressure reception connection and converts this into an electrical signal. So as to ensure high measurement accuracy over a long operating period, without it being necessary to have exchanges of the pressure transducer or its new calibration, it is provided according to the invention that the pressure transducer comprises a ceramic pressure measuring cell.

Abstract: The invention relates to a plug-in cable connector 3 for electrical cable or plug connections 10. The cable connector 3, which forms the termination of the cable 1, has a hollow connector shell 4 of brass, whose boring forms a cable entry opening on its cable side section and an abutment collar 5 on which a plug connector 6 with a collar 6′ is supported axially in one direction. The cable entry opening is provided with an internal thread 22, in which a four cornered part 30 of metal, having a through boring 35 for the cable, is screwed in. The screening or armouring of the cable 1 can be accepted between the through boring 25 and the cable covering 1′, so that a good earthing of the cable 1 and the cable connector 3 can be achieved. The interior space of the connector shell 4 is sealed by means of a formed part 27, which is formed onto the cable covering 1′, the connector shell 4 and the multi-cornered part 30.

Abstract: A control device (10) for electro-hydraulic support frames with a casing (11) accommodating a circuit, several plug-in connectors (20) accessible from outside the casing (11) for the connection of control leads, and with actuating control elements (13) connected to the circuit. The control elements (14, 15, 16, 17, 18) are grouped together in several exchangeable modules (27), accommodated in the casing (11), which are connected to the circuit and to each other by plug-in connecting elements (30) when installed in the casing (11). The modules (27) are exchangeable independently of each other. The operating keys of a keyboard (16) and/or an indicator unit (18) can be combined in one operating module (28), which can be removed from the casing (11). The actual control of the control device in the casing (11) and operation of the support frame is permitted to continue during the exchange of the operating module (28).

Abstract: The invention relates to a plug-in cable connector 3 for electrical cable or plug connections 10. The cable connector 3, which forms the termination of the cable 1, has a hollow connector shell 4 of brass, whose boring forms a cable entry opening on its cable side section and an abutment collar 5 on which a plug connector 6 with a collar 6′ is supported axially in one direction. The cable entry opening is provided with an internal thread 22, in which a four cornered part 30 of metal, having a through boring 35 for the cable, is screwed in. The screening or armouring of the cable 1 can be accepted between the through boring 25 and the cable covering 1′, so that a good earthing of the cable 1 and the cable connector 3 can be achieved. The interior space of the connector shell 4 is sealed by means of a formed part 27, which is formed onto the cable covering 1′, the connector shell 4 and the multi-cornered part 30.

Abstract: The invention relates to a plug-type coupling for sheathed electrical cables, particularly for use in mining, with a flexible protective sheath which accommodates electrical conductors of the cable. The end of the sheath is gripped in a pullproof and sealed fashion between a pressed sleeve which surrounds it and an inner backing sleeve, these parts forming part of the coupling which also includes a coupling sleeve which adjoins the pressed sleeve and receives an insert which holds contact elements electrically connected to the electrical conductors. According to the invention, the pressed sleeve is joined to the coupling sleeve to form a one-piece connector to which the insert carrying the contact elements can be coupled in a pullproof fashion by means of a snap connection. The distinctive features of the sheathed cable coupling according to the invention are simplicity of construction, ease of assembly and low production cost.

Abstract: Pressure sensor (10) for measuring hydraulic pressures, in particular for use in mining hydraulics, having a hydraulic connection (12) and a hydraulo-electrical pressure transducer (15) which is loaded hydraulically via the said connection, and having a circuit board (18) which processes the electrical measured values from the pressure transducer. In order to ensure a secure fastening of the circuit board to the pressure transducer with, at the same time, easy exchangeability of the board, it is proposed by the invention that the circuit board be screwed to the pressure sensor (10) at a distance from the pressure transducer (15), preferably with at least one spacer (23, 24) interposed.

Abstract: A cable for connecting control units of powered supports to each other to prevent simultaneous movement of two adjacent powered supports in underground mining. The cable includes plug housings, at least one optical waveguide, connecting elements, optoelectric transducers, and potting. Each housing contains a chamber and has an electric plug-in coupling that connects to the control units. The at least one optical waveguide has ends with light entry and light exit surfaces. The connecting elements are arranged at the ends of the at least one optical waveguide and are arranged in the chamber in a respective plug housing. The optoelectric transducers are connected to the connecting elements and are arranged in the chamber of the respective plug housing and transmit data between the control units.