SHAFT-SINKING SHIELD SET Russian patent published in 1996 - IPC

FIELD: mining. SUBSTANCE: shaft- sinking shield set has a train of head sections with impeller on outer surface, actuator and mechanism to unload broken rock, and tail section with lengthwise support members and mechanism to erect support. All of them are interconnected so to be moved lengthwise and head section should be rotated about its lengthwise axis. The ring shell of the mechanism for rotation head section is rigidly connected to the tail section. Jacks are installed on the ring shell. Cross feed mechanism is provided with jacks. The casings of them are connected to the tail section. Rods are provided with push rods that may interact to the support being erected. It is equipped with rock bearings installed between ring shell and head section and rigidly secured to the tail section with a platform. Apart of the platform is placed in the head section and has ring guide for rock bearings of the platform. The jacks of length feed mechanism are installed between lengthwise members. EFFECT: high capacity. 2 dwg