公开(公告)号：WO2019149354A1

公开(公告)日：2019-08-08

申请号：PCT/EP2018/052413

申请日：2018-01-31

Applicant: SANDVIK MINING AND CONSTRUCTION G.M.B.H.

Inventor： GRIEF, Ralf ,  HASLER, Stefan ,  IRREGGER, Karl ,  STEINER, Stefan ,  WEINBERGER, Gerhard

IPC: E21C27/12 ,  E21C27/22 ,  E21C27/24 ,  E21C31/02

CPC classification number: E21C27/22 ,  E21C27/124 ,  E21C27/24 ,  E21C31/02

Abstract: A heading machine includes first and second rotating cutting heads having respectively an axis of rotation extending substantially in a longitudinal direction of the machine, a first cutting roller having an axis of rotation extending substantially horizontal and transverse to the longitudinal direction of the machine, and a further cutting device supported on the cutting frame and adapted to cut off the cusps of unmined material left on side wall. The machine further includes a side stabilizer, and can cut a rectangular profile without leaving cusps left on the side wall.

公开(公告)号：WO2020007480A1

公开(公告)日：2020-01-09

申请号：PCT/EP2018/068336

申请日：2018-07-06

Applicant: SANDVIK MINING AND CONSTRUCTION G.M.B.H.

Inventor： HASLER, Stefan ,  UMUNDUM, Christian

IPC: F15B18/00 ,  B65G23/36 ,  B65G15/08

Abstract: A hydraulic system to control a plurality of drive motors suitable for driving conveying apparatus such as a conveyor belt. The hydraulic system comprises modular master and slave hydraulic units implemented as hydraulic circuits in which pressure sensors and pressure reducing valves provide speed, torque and directional control.