Dbt Gmbh

Caterpillar Global Mining Europe Gmbh

Dbt Automation Gmbh

Bucyrus Europe Gmbh

Dbh Gmbh

Sebastian M Mundry

Jens Titschert

Franz-Heinrich Suilmann

Reiner Frank

Jürgen Tschöpe

Michael Dettmers

Werner Reinelt

Johannes Wesselmann

Stefan Hengstler

Torsten Boldt

Patrick Hantke

Gerhard Merten

Detlef Hahn

Wilfried Weigel

Marco Ahler

Martin Broszat

Jurgen Tschope

Siamak Onsori

Simon Pauli

Henner Ruschkamp

Markus Lenzing

Horst Wagner

Jurgen Romanski

Ulrich Ballauf

Keith O'Neil

Jochen Mattern

Johannes Weβelmann

Rainer Marek

Detlev Lettau

Detlef Lettau

The invention relates to an extraction system for mineral extraction, having a machine frame which is movable along a conveying device and which for each direction of travel, on its front side that, in operation, lies facing a working face, has hewing tools for the minerals to be won, and having a sensor system, disposed on the machine frame, for mineral/host rock recognition. In order to provide an extraction system which can be provided with or used with an improved sensor system, a retaining box for the sensor device is fastened in projecting arrangement to the front side of the machine frame, the retaining box preferably containing a georadar as the sensor system.

Extraction system for mineral extraction and retaining device for a sensor system therefor

A shield cap for a shield-type support for underground mining includes a cap plate, with reception devices for the connection of hydraulic cylinder heads to the shield cap, and a supporting structure welded below the cap plate and having a plurality of longitudinal spars. At least two of the longitudinal spars include substantially I-profile struts having an upper profile chord, a lower profile chord and a middle chord running perpendicularly to the two profile chords. The distance between the upper and the lower profile chord decreases at least over a part length of each strut.

Shield cap for a shield-type mining support

A shearer loader for underground mining, the shear loader comprising a shearer loader body, at least one cutting drum fastened to a supporting arm joined to the loader body, a first drive motor for moving the shearer loader and a second drive motor for moving the cutting drums, a cooling water circuit for cooling the first and second drive motors, the cooling water circuit including an inlet and a return line, a spray system including at least one spray water circuit, the spray system including a feed line fluidly connecting a common water connection to the cutting drums, the spray system further including a valve in the feed line for switching the spray water circuits on and off, a control valve connected between the feed line of the spray water circuit and the return line of the cooling water circuit, the control valve allowing selective flow from the cooling water circuit to be directed to the cutting drums.

Shearer loader for underground mining comprising a spray system

A water system for the admission of pressurized water to spray systems arranged on a powered support assembly for underground mining, having at least one spray system for plow or shearer track spraying and having at least one further spray system for goaf space spraying, canopy spraying and side spraying. A central water line feeds spray nozzles of the spray systems. To increase the operating reliability of the water system and thus of the powered support assembly, the control valves for the spray systems are accommodated in a spray valve block which is provided with a connection for the water line and which can be arranged on the powered support assembly as a unit separated from a hydraulic valve block.

Arrangement for the admission of pressurized water to spray systems

A housing cover for a solenoid housing operable for accommodating solenoids for switching hydraulic directional valves is disclosed. A housing cover box has a plurality of side walls, a top side, and an open bottom side, with first and second actuating guides for guiding first and second solenoid control push rods being located on the top side. A plug connector is located between the actuating guides. At least one screw clearance hole is located at each corner of the housing cover box for locating a screw for joining the housing cover box to the solenoid housing. A sealing plate is located between the housing cover box and the solenoid housing, and at least one mounting foot is located at a corner and on a bottom surface of the housing cover box. A tubular spigot is aligned with and extends each screw clearance hole.

Housing cover for switching solenoid housing

A slide shoe for a mining winning machine is disclosed. The slide shoe includes a slide shoe body attached to the mining winning machine, a sliding area located on the slide shoe body and including a wear thickness, and at least one sensor. The sensor is scannable by wireless signal transmission. A dimension of the wear thickness decreases due to wear during operation, and a sensor signal of the sensor changes when the dimension of the wear thickness of the sliding area decreases below a predetermined minimum thickness.

Slide shoe for mining winning machine

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.

Control device for electrohydraulic support controller

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.

Individual controller for shield support frames

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

Sheathed cable for underground mining

An electro-hydraulic assembly for use in underground mining is disclosed. The assembly includes a hydraulic component, such as a valve block for an underground self-advancing roof support, as well as actuators and/or sensors which have a housing and can be connected or are connected via a data-transmission system to a control unit. A function (e.g. withdrawing the support, setting, advancing, or the like) can be activated at the hydraulic component by each actuator, and/or a hydraulic state associated with a measuring point of the hydraulic component or another measured variable associated with the self-advancing roof support can be measured by each sensor. A reader unit is associated with each actuator and/or sensor in its respective housing, and an information element or transponder is associated with the hydraulic component for each function, each control valve, or each measuring point. The information in the information element or transponder is readable by the reader unit and transmittable to the control unit. All the control valves and sensors are coded for the control unit and the control unit can associate each actuator with its corresponding control valve. In this way, it can be known which actuator is associated with which function of the hydraulic component and connection faults can be avoided.

Assembly for use in underground mining

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.

Pressure cell device for measuring hydraulic pressures

The present invention relates to a pilot control valve, especially for use in mining hydraulics. The valve has a valve insert constructed as a valve cartridge, whose single or multipart valve housing has an input entryfor pressure fluid P, a connection openingfor a load connection A, an output openingopening into the return flow T and an axial boringto accept a valve closing bodyprovided with a closing surface, which can be lifted from a valve sealing seatarranged between the entry openingand the connection openingby means of an electro-magnetic or piezo-electric switching device which can be fastened onto the valve housing. With the lifting movement of the valve closing bodyfrom the valve sealing seatis coupled an at least two part closing mechanism for their separation arranged between the connection openingand the output openingIn accordance with the present invention a single part valve closing bodyis provided, having the sealing surface in the form of a collarand the moving part of the closing mechanism in the form of a shaft sectionwhereby the shaft sectionenters into a boring sectionC of the axial boringduring the lifting movement, closing a radial openingThe valve sealing seatcan be exchanged with a valve sleeveand the nominal bore of the pilot control valve can be changed by means of a throttle

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Lüdinghausen, Germany

Sebastian M Mundry