This paper studies anti-impact concrete structure and the performance of ERF Damper under big impact in theory,which helps realize the designs of ERF Damper in the structure parameter,and designed the electric conduction link according to design request on power and voltage.

The structures of the straight core-pulling mechanism such as guide strip slide structure,guide rod sliding plate structure,guide strip structure and sleeve structure are introduced and their characterˉistics are stated.

Process of guide foot of big power shearer;