Sandvik

An apparatus comprises: at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: determine a route for a manually operated vehicle, wherein at least part of the route is in a restricted area of a mine; transmit a configuration of the route to the manually operated vehicle; monitor a position of the manually operated vehicle; and cause a restriction of movement for at least one autonomous mining vehicle configured to operate in the restricted area, in response to determining that the position of the manually operated vehicle deviates from the route within the restricted area.

A hammer drill assembly for coupling to a drill string having a drill bit positioned at the forward end having a drill head and a bit shaft; wherein a plurality of axially extending bit splines project radially outwards from a radially outward facing surface of the bit shaft; wherein each of the bit splines comprises a bit spline tip at its axially rearward end having a rearward axially outer edge and a central bit spline longitudinal axis; and a driver sub provided axially rearward of the drill bit comprising a plurality of axially extending driver sub splines projecting radially inwards from an inward facing surface of the driver sub; characterised in that: the rearward axially outer edge on at least of one of bit spline tips is non-perpendicular to the bit spline longitudinal axis along at least 25% of the width of the bit spline tip.

A method comprises: obtaining information about positions of targets detected by a scanning device by a single scanning operation, wherein the positions of the targets are relative to the scanning device; identifying a first subset of the targets based on the first subset having a spatial configuration corresponding to a predetermined spatial configuration of reference targets mounted to a surface of the mine; identifying a second subset of the targets based on the second subset having a spatial configuration corresponding a predetermined spatial configuration of targets of the mining vehicle; obtaining information about positions of the first subset in a coordinate frame of the mine; determining a position of the mining vehicle in the coordinate frame of the mine based on the positions of the first subset in the coordinate frame of the mine and the positions of the second subset of targets relative to the scanning device.

A method may comprise: obtaining information about positions of targets detected by a scanning device; determining whether a spatial configuration of a first subset of the targets corresponds to a predetermined spatial configuration of targets mounted to a surface of the mine; determining whether a spatial configuration of a second subset of the targets corresponds to a predetermined spatial configuration of targets of the mining vehicle; causing the scanning device to repeat the scanning operation until identifying the first and second subsets of targets; determining a position of the mining vehicle in the coordinate frame of the mine based on the positions of the first subset of the targets in the coordinate frame of the mine and positions of the second subset of the targets relative to the scanning device.

There is disclosed a cutterhead system (110) for engaging with a rock working face (140), comprising: a cutterhead carrier (126) comprising a first section and a second section, wherein the second section is configured to be rotatable relative to the first section about a pivot axis (A3); at least one rotatable cutterhead (128, 128') mounted to the second section of the cutterhead carrier (126), a respective cutterhead of the at least one cutterhead rotatable about a respective cutterhead rotational axis (A4, A4'); a plurality of roller cutters (130) independently rotatably mounted at each rotatable cutterhead (128, 128'), a respective roller cutter (130) being rotatable about a respective roller cutter rotational axis (A5, A5') arranged at an angle relative to the cutterhead rotational axis (A4, A4'), said angle is in the range of 60 to 90 degree, preferably in the range of 70 to 80 degrees; wherein the respective cutterhead rotational axis (A4, A4') is substantially transverse to the pivot axis (A3).

There is disclosed a cutterhead system (110) for engaging with a rock working face (140), comprising: a cutterhead carrier (126) comprising a first section and a second section, wherein the second section is configured to be rotatable relative to the first section about a pivot axis (A3); at least one rotatable cutterhead (128, 128') mounted to the second section of the cutterhead carrier (126), a respective cutterhead of the at least one cutterhead rotatable about a respective cutterhead rotational axis (A4, A4'); a plurality of roller cutters (130) independently rotatably mounted at each rotatable cutterhead (128, 128'), a respective roller cutter (130) being rotatable about a respective roller cutter rotational axis (A5, A5') arranged at an angle relative to the cutterhead rotational axis (A4, A4'), said angle is in the range of 60 to 90 degree, preferably in the range of 70 to 80 degrees; wherein the respective cutterhead rotational axis (A4, A4') is substantially transverse to the pivot axis (A3).

There is provided a bidirectional support assembly (10) for bidirectional support of a vibratory device (20), the assembly (10) comprising a connector (45) for cooperating with the vibratory device (20); a primary support arrangement (4, 42, 42', 44) comprising one or more primary spring element(s) (42, 42) configured to be compressed in response to downward displacement of the connector (45) for supporting the connector (45) in an upwards directed first support direction (D1); a secondary support arrangement (6, 62, 62', 63, 63', 64, 64') comprising one or more secondary spring element(s) (61, 62) configured to be compressed in response to upward displacement of the connector (45) for supporting the connector (45) in a second support direction (D2) that is opposite the first support direction (D1).

The present invention relates to a turning method for machining a metal workpiece with a turning tool comprising a cutting edge, which cutting edge includes a cutting nose and a clearance corner, wherein the method comprises the steps of: - determining a final machined profile of the metal workpiece, wherein the final machined profile comprises a main surface and a shoulder surface; - determining a cutting depth; - rotating the metal workpiece around an axis of rotation; - cutting the metal workpiece with the cutting nose by, - a) moving, at the cutting depth, the cutting nose along the main surface, towards the shoulder surface, - b) moving the cutting nose further toward the shoulder surface until the clearance corner is positioned on the shoulder surface, - c) moving the cutting nose away from the shoulder surface, - d) moving the cutting nose toward the shoulder surface until the clearance corner is positioned on the shoulder surface, - e) moving the cutting nose away from the shoulder surface, wherein any of the steps b - e comprises moving the cutting nose towards the main surface, - f) moving, at the cutting depth, the cutting nose along the main surface, further away from the shoulder surface.

A method for detecting an event of a mining vehicle may comprise: receiving a configuration of an operating point, wherein the configuration of the operating point comprises a position of the operating point and a requested heading of the mining vehicle for the operating point; determining the mining vehicle to be in proximity of the operating point; determining a heading of the mining vehicle in the proximity of the operating point; detecting a change in weight data of the mining vehicle in the proximity of the operating point; and recording an event associated with the operating point, in response to detecting the change in the weight data of the mining vehicle in the proximity of the operating point and in response to determining that the heading of the mining vehicle in the proximity of the operating point corresponds to the requested heading of the mining vehicle for the operating point.

A drill tip screw (3) for fastening of a drill tip (2) to an exchangeable head drill support body (1) has a general extension in an axial direction (10). The drill tip screw comprises a screw head (12) at a first axial end (11) of the drill tip screw and an outer threading (18) at a second axial end (19) of the drill tip screw. The second axial end is opposite to the first axial end. The drill tip screw further comprises a center portion (15), wherein the center portion is rotationally symmetric. The drill tip screw further comprises a first tapered portion (14) having its widest end (21) connected in one piece to the center portion. The first tapered portion is rotationally symmetric. An axial cross-section of the first tapered portion presents a concave surface shape.