| 摘要 |
FIELD: mining industry. ^ SUBSTANCE: device is suspended on flexible support of balancing mechanism and includes striker bar with tail piece, head piece of casing pipes, spring and locking element placed on tail piece. Tail piece of striker bar is made with stopping clamp and is provided with support washer. Locking element is made with possible displacement along tail piece axis. Spring is mounted between support washer and locking element. ^ EFFECT: higher efficiency. ^ 2 dwg |
