Abstract: The present disclosure relates to a plow guide assembly for guiding a mining plow. The plow guide assembly may comprise a base member including a first guide beam for guideing the mining plow and extending along a first axis, and a second guide beam spaced apart the first guide beam for defining a service clearance therebetween, and extending along a second axis axially aligned to the first axis. The plow guide assembly may further comprise an insert element insertable into the service clearance and having a third guide beam extending along a third axis. In an assembled state of the insert element, the third axis is axially aligned to the first and second axes.

Abstract: A plow bit for a bit holder including a recess of a mining plow is disclosed. The plow bit also has a bit shank configured to be inserted into the recess of the bit holder. The bit shank has a front shank face, which is concave. The bit shank also has a rear shank face disposed on an opposite side of the bit shank with respect to the front shank face. The bit shank further has a first lateral shank face connected to the front shank face and the rear shank face. The first lateral shank face includes a first groove extending from the front shank face in direction of the rear shank face. The groove receives a securing pin.

Abstract: The present disclosure relates to a plow guide assembly for guiding a mining plow. The plow guide assembly may comprise a base member including a first guide beam for guideing the mining plow and extending along a first axis, and a second guide beam spaced apart the first guide beam for defining a service clearance therebetween, and extending along a second axis axially aligned to the first axis. The plow guide assembly may further comprise an insert element insertable into the service clearance and having a third guide beam extending along a third axis. In an assembled state of the insert element, the third axis is axially aligned to the first and second axes.

Abstract: A plow bit for a bit holder including a recess of a mining plow is disclosed. The plow bit also has a bit shank configured to be inserted into the recess of the bit holder. The bit shank has a front shank face, which is concave. The bit shank also has a rear shank face disposed on an opposite side of the bit shank with respect to the front shank face. The bit shank further has a first lateral shank face connected to the front shank face and the rear shank face. The first lateral shank face includes a first groove extending from the front shank face in direction of the rear shank face. The groove receives a securing pin.

Abstract: A replaceable guide piece (10) for an extraction or coal plough (100) is provided. The replaceable guide piece (10) includes a generally U-shaped guide piece body (12) configured to be inserted into a guide claw (14) of the plough (100). A single recess (22) is formed in a central portion of a guide piece body (12) to extend at an angle (?) from an upper side of guide piece body (12) to a side surface of the same. A locking mechanism (24) is configured to engage with the single recess (22) to prevent movement of the guide piece (10) in the longitudinal direction after insertion of the guide piece (10) into the guide claw.

Abstract: A replaceable guide piece (10) for an extraction or coal plough (100) is provided. The replaceable guide piece (10) includes a generally U-shaped guide piece body (12) configured to be inserted into a guide claw (14) of the plough (100). A single recess (22) is formed in a central portion of a guide piece body (12) to extend at an angle (?) from an upper side of guide piece body (12) to a side surface of the same. A locking mechanism (24) is configured to engage with the single recess (22) to prevent movement of the guide piece (10) in the longitudinal direction after insertion of the guide piece (10) into the guide claw.

Abstract: A mining plough for plough systems for the exploiting of minerals in inclined formations. In order to provide a mining plough and a plough system, with which coal seams, in particular seams in steep formation can be exploited economically and with high operating safety, the mining plough includes a separable plough body having two plough body basic elements each being provided with a fixture for a separate traction means and with a guide means for moving the coal plough by means of at least two traction means and for guiding the coal plough on at least two mutually spaced guide mechanisms.

Abstract: A transfer station in the face end region between a face conveyor and a gate conveyor in the region of a drive for the face conveyor, the gate conveyor being attached to the face conveyor such that it can be moved pivotably to a limited extent relative to the latter. The transfer station being provided with a receiving plate that is arranged on a subframe of the drive for the face conveyor, which receiving plate is provided with a bearing seat, in which a specific connection pan element of the gate conveyor is mounted such that it can be moved pivotably relative to the face conveyor or its drive about a pivot axis which is defined by the bearing seat. The construction has the particular advantage that the pivoting bearing is readily accessible and has to transmit only low forces which result substantially from the loading of the gate conveyor.

Abstract: A bit arrangement for fastening to a plough-body element of a mining plough for underground mining, particularly of a coal plough for the excavation of steeply disposed coal seams, having a plurality of bit pockets for accommodating, preferably demountably, respectively one bit per bit pocket. In order thereby to create a bit arrangement and a mining plough that can be used advantageously for the excavation of steeply disposed mineral deposits and that render possible economic excavation of such mineral deposits, at least two bit pockets are locked in recesses on a front side of a bit strip, which is provided, on a back side, with at least one groove indentation for the positive engagement of a locking projection on the plough-body element and is detachably fastenable to the plough-body element by means of detachable fastening means.

Abstract: A traction carriage for an underground mining plow, comprising a traction carriage body which can be inserted into a cavity in a plow body and which on the rear side of a guide recess has a front part whose ends pointing in the direction of travel form stop surfaces for interacting with counterstop surfaces in the cavity of the plow body. According to the invention, a damping device having a damping action in both directions of travel is integrated into the front part of the traction carriage. In order to provide a low-maintenance damping device which allows a more favorable transmission of force between the stop surface on the traction carriage and the counterstop surface on the plow body, the coupling piece can be moved relative to the stop surfaces counter to the restoring force of a damping system of the damping device that is arranged between the stop surfaces.

Abstract: A chain guide for a driving chain of a winning plow or the like, the chain guide being provided with a chain guide element which is arranged in spatial proximity to the sprockets at a driving or return station and is against the chain transversely to the direction of movement of the latter, provision is made according to the invention for the chain guide element to have at least one pressure roller which can be adjusted against the chain links of the driving chain, as a result of which the wear on the chain guide element is considerably reduced.

Abstract: A roof cutter holder adjustment device for a roof cutter holder arranged in a vertically adjustable manner on a plow body of a winning plow, comprising a worm wheel for interacting with a rack-like tooth system on the roof cutter holder, an input shaft for actuating the worm wheel, and comprising a head plate which has a passage for the input shaft and which can be fastened or is fastened to the plow body in a rotationally fixed manner. In order to enable the roof cutter holder adjustment device to be mounted and released in a simple manner, the head plate has at least one fastening device, to which a securing element which can be put onto the free end of the input shaft can be fastened in a rotationally fixed manner in the mounted state.

Abstract: The invention relates to a drive station for an underground plough system, in particular a coal plough system, with a machine frame to which a plough box can be fastened, and with a wedge trough which is connected to the machine frame and is provided with a plough guide device, which has chain channels for a plough chain, and also a plough end stop on a runout section for a winning plough. In order to facilitate the repair of a winning plough, the plough end stop is formed on an attachment which can be dismantled, when the plough guide device is mounted, to produce a repair section in the longwall-gallery transition of the wedge trough. The invention also relates to a repair method in which the plough end stop is dismantled and the winning plough is moved into the repair section.

Abstract: A transfer station in the face end region between a face conveyor and a gate conveyor in the region of a drive for the face conveyor, the gate conveyor being attached to the face conveyor such that it can be moved pivotably to a limited extent relative to the latter. The transfer station being provided with a receiving plate that is arranged on a subframe of the drive for the face conveyor, which receiving plate is provided with a bearing seat, in which a specific connection pan element of the gate conveyor is mounted such that it can be moved pivotably relative to the face conveyor or its drive about a pivot axis which is defined by the bearing seat. The construction has the particular advantage that the pivoting bearing is readily accessible and has to transmit only low forces which result substantially from the loading of the gate conveyor.

Abstract: The invention relates to a device for determining the cutting horizon of a mining winning system, having a movable conveyor which is composed of individual pan elements, and having at least one optical detection sensor which has a sensor head that is received in a sensor carrier and can be pressed with at least one pressure means against a coal/basement rock boundary layer. In order to improve the sensing and working reliability, over the length of the conveyor, a plurality of pan elements are configured as sensor pans which are provided with a protected recess which is open to the basement rock and in which the sensor carrier is arranged or can be arranged such that it can be disassembled together with the sensor head.

Abstract: A bit arrangement for fastening to a plough-body element of a mining plough for underground mining, particularly of a coal plough for the excavation of steeply disposed coal seams, having a plurality of bit pockets for accommodating, preferably demountably, respectively one bit per bit pocket. In order thereby to create a bit arrangement and a mining plough that can be used advantageously for the excavation of steeply disposed mineral deposits and that render possible economic excavation of such mineral deposits, at least two bit pockets are locked in recesses on a front side of a bit strip, which is provided, on a back side, with at least one groove indentation for the positive engagement of a locking projection on the plough-body element and is detachably fastenable to the plough-body element by means of detachable fastening means.

Abstract: A mining plough for plough systems for the exploiting of minerals in inclined formations. In order to provide a mining plough and a plough system, with which coal seams, in particular seams in steep formation can be exploited economically and with high operating safety, the mining plough includes a separable plough body having two plough body basic elements each being provided with a fixture for a separate traction means and with a guide means for moving the coal plough by means of at least two traction means and for guiding the coal plough on at least two mutually spaced guide mechanisms.

Abstract: A connector device for connecting an attachment part, in particular a plough guide part, to a lateral element of a trough pan of a mining device, comprising first fittings arranged on the lateral element, comprising counter fittings arranged on the attachment part and detachably connectable to the fittings, and comprising at least one retaining piece, which in the closing position prevents detachment of the fitting and counter fitting and in the opening position permits detachment. In order to facilitate assembly and disassembly, to the retaining piece there is assigned, according to the invention, a hydraulic cylinder for moving the retaining piece between the closing and opening position.

Abstract: A chain guide for a driving chain of a winning plow or the like, the chain guide being provided with a chain guide element which is arranged in spatial proximity to the sprockets at a driving or return station and is against the chain transversely to the direction of movement of the latter, provision is made according to the invention for the chain guide element to have at least one pressure roller which can be adjusted against the chain links of the driving chain, as a result of which the wear on the chain guide element is considerably reduced.

Abstract: The invention relates to a drive station for an underground plough system, in particular a coal plough system, with a machine frame to which a plough box can be fastened, and with a wedge trough which is connected to the machine frame and is provided with a plough guide device, which has chain channels for a plough chain, and also a plough end stop on a runout section for a winning plough. In order to facilitate the repair of a winning plough, the plough end stop is formed on an attachment which can be dismantled, when the plough guide device is mounted, to produce a repair section in the longwall-gallery transition of the wedge trough. The invention also relates to a repair method in which the plough end stop is dismantled and the winning plough is moved into the repair section.