Method and arrangement for preventing the passage of a mining vehicle

A method for preventing the passage of a mining vehicle having a highest point, the method comprising the steps of:

• defining an acccepted operating range for the mining vehicle;
• and
• controlling the vehicle so that it stays within the accepted operating range by stopping the vehicle if it tries to leave the operating range,
• wherein the defining step includes arranging at least one barrier boom at an operating site above the highest point of the mining vehicle, and the controlling step includes providing the mining vehicle with a mast to bridge a gap between the highest point and the barrier boom for triggering an emergency stop switch arranged in connection with the mast to stop the mining vehicle by the mast hitting the boom when the mining vehicle is at the barrier boom, and the defining step further includes arranging a plurality of movable barrier booms at desired points of the operating site and altering the accepted operating range of the mining vehicle by changing the position of the barrier boom.

A method for preventing the passage of a mining vehicle having a highest point, the method comprising the steps of:

• defining an accepted operating range for the mining vehicle;
• and
• controlling the vehicle so that it stays within the accepted operating range by stopping the vehicle if it tries to leave the operating range,
• wherein the defining step includes arranging at least one barrier boom at an operating site above the highest point of the mining vehicle, and the controlling step includes providing the mining vehicle with a mast to bridge a gap between the highest point and the barrier boom for triggering an emergency stop switch arranged in connection with the mast to stop the mining vehicle by the mast hitting the boom when the mining vehicle is at the barrier boom, and the defining step further includes making the barrier booms as projecting beams which are turnably pivotable at one end to the wall of the mine gallery, the accepted operating range of the mining vehicle being determined by pivoting the booms in a transverse or longitudinal direction with respect to the mine gallery.

An arrangement for preventing the passage of a mining vehicle, comprising:

• a mining vehicle;
• a mast arranged on the mining vehicle, the mast extending above other portions of the mining vehicle
• a movable barrier boom positioned in a mine gallery above the other portions of the mining vehicle and adapted to be contacted by the mast;
• and
• an emergency stop switch adapted to stop the mining vehicle when the mast hits the barrier boom defining the operating range of the mining vehicle and arranged within a range of motion of the mast.