Title: Rock breaker for secondary breaking mine rock
Application Number: 91106882 Application Date: 1991.12.20
Publication Number: 1061259 Publication Date: 1992.05.20
Approval Pub. Date: Granted Pub. Date: 1993.10.06
International Classifi-cation: B02C1/00,B28D1/26
Applicant(s) Name: Zhongnan Polytechnical Univ. Address: 410083
Inventor(s) Name: He Qinghua, Yang Xiangbi
Attorney & Agent: YUAN XIANG
Abstract:
     The present invention relates to a rock breaker for secondary breaking mine rock in the mining field. It uses the hydraulic control, drop hammer impact, cantilever structure and fixed installation form thereof. It depends the cantilever swing and its lifting and the translational motion of impact member on the cantilever to implement the variable-amplitude shifting movement of said equipment so as to pledge the breaking within the working range. The structure of said equipment is simple, its operation is convenient, it is easy to maintain, its cost is low, and efficiency is high. Its application solves the secondary breaking problem of large block mine rock under the shaft and at open pit. It lightens the worker's labor intensity, reduces its production cost and raises the working efficiency.
Time: 12
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