Patent ID: 9016801
Filing Date: 2015-04-28
Classification: E21D

Abstract:
1. An earth pressure balance shield machine without disc cutter arrangement which comprises a cutting unit ( 1 ), a shaft member ( 2 ), a spiral waste collecting member ( 3 ), an earth pressure balance cabin ( 4 ), a transfer case ( 5 ), a reducer ( 6 ), a driving motor ( 7 ), a waste conveyor ( 9 ), a partition unit for the earth pressure balance cabin, a sliding support ( 25 ), a telescopic cylinder ( 26 ), a propulsion cylinder ( 16 ), an airlock chamber ( 27 ), a front shield unit ( 13 ), a middle shield unit ( 14 ), a rear shield unit ( 15 ) and a middle shield panel ( 32 ), characterized in that, said partition unit for the earth pressure balance cabin comprises a moveable partition member ( 30 ) and a stationary partition member ( 31 ), said front shield unit ( 13 ) comprises a cutting unit ( 1 ) at a front end of said front shield unit ( 13 ) in which said cutting unit ( 1 ) comprises a cutting head ( 11 ) and a plurality of cutting teeth ( 12 ) distributed on said cutting head ( 11 ), a shaft member ( 2 ) for said cutting head having two distal ends securely connected to said cutting head ( 11 ) and a power transmission unit respectively, said power transmission unit is formed by said transfer case ( 5 ), said reducer ( 6 ) and said driving motor ( 7 ) in which said transfer case ( 5 ) is connected to said reducer ( 6 ) and said driving motor ( 7 ), wherein in said power transmission unit which is positioned at an upper portion of said earth pressure balance shield machine, a front end of said transfer case ( wherein in said power transmission unit which is positioned at a lower portion of said earth pressure balance shield machine, a front end of said transfer case (