| 摘要 |
The barrier has an integrated gravity brake attached and dismantled under attachment pressure from outside, through an additional and sealing opening, when the ball plug is closed. The opening is sealed for assembling and disassembling of the brake during the operating condition of the barrier by a sealing plug of a sealing unit (8). The ball plug is provided such that the gravity brakes are mounted over a screw-in part. |
