| 摘要 |
<p>The invention concerns an arrangement for a capture device (1a) for a lift, in surroundings in which there is a risk of explosion, where the capture device demonstrates a shell-shaped brake housing (1c) with a centrifugal regulator that rotates during the motion of the lift car, a brake with a fixed brake part (6) and a displaceable brake part (8), a spring (16) with which the displaceable brake part is compelled in a direction towards the fixed brake part (6), whereby the centrifugal regulator on activation is designed to press, through the influence of the spring, the displaceable brake part gradually harder against the fixed brake part. For use in surroundings in which there is a risk of explosion, the brake housing (1a) of the capture device is designed as an excess pressure encapsulation with the ability to maintain an inner controlled atmosphere of gas, which brake housing comprises, for the maintenance of the said atmosphere, a first (50:10) and a second (50:12) channel, a first line (100), one end of which is connected to the first channel for the supply of a gaseous medium into the brake housing, a second line (101), one end of which is connected to the second channel for the withdrawal of the said gaseous medium from the brake housing, a surveillance and pressure sensor (10), to which the second ends (101, 102) of the two lines are connected, whereby the gaseous medium is caused to circulate through the said channels.</p> |
