专利名称：DEVICE FOR SUPPORTING ADIT EXCAVATED BY MINING MACHINE天津一对一辅导多少钱
发明人：UIRUHERUMU ARUTARERU,ARUFURETSUDO JIITSUTSU
dumps申请号：JP6453479imatinib
家长会校长发言稿
申请日：19790524
英语短句公开号：JPS554493A
公开日：
激活英文19800112
专利内容由知识产权出版社提供
学习一对一
摘要：The device for provisionally supporting a gallery or a tunnel which definitely shall be supported by support frames clod on all sides compris a floor girder which rvs as a part of the provisional frame as well as of the definite one. For the provisional support said floor girders are laid out parately near the mining face. Only U-shaped elements which are reduceable in profile are to be brought forward through the inner width of the positioned frames. The U-shaped elements may be connected with the said floor girders to form a complete provisional supporting frame clod on all sides. Such provisional support fulfills absolutely the safety requirements, and tting the definite frames may be carried out quickly and without long lasting interruptions of biasing the roof becau the provisional floor girders remain usable as floor girders for the definite supporting frames, too.
eliminate申请人：VOEST ALPINE AG
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