While in the medium breaking type shi - rudo tunnelling machine, breaking section shi - ru conservation structure

摘要

(57) Abstract Objective To reduce the earth and sand tonnage which invades the medium breaking shi - ru section, inWhen the time angle is large and regarding the long distance digging Shank time, the shi - ru material destructionWithout losing the shi - ru structure which to the last dead water it is possible is offeredru. Constitution On rear end circles of anterior outer hull interposition front part of back outer hullTo interpose, to lie between the shi - ru material between the interposition sections, that interpositionFrom section from inner wall section and the interposition section of anterior outer hull of front rearMultiple jiyatsu which concatenate both with the inner wall sections of the back outer hullWhile making interval circumferential direction, installing ki, breaking type shi - rudoIn the tunnelling machine, the aforementioned shi - ru material the urethane or rubber boardWith additional strength pre- - to 7of a the steel sheet and the like and 7b the shi - ru material conservation material which it keepsInclining 6 to the rear end of the front public husk, to install, rubber board or uThe toe of switch of retan 7c is made to contact rear outer hull frontal external wall spherical section 2a,Due to ru thing, shi - ru material closing airtight between 3 and shi - ru conservation material 6It made structure.