SHIELD MACHINE
PROBLEM TO BE SOLVED: To provide a shield machine such that the work of replacing a cutter bit can be performed safely without hindrance by surely preventing water, earth and sand from entering the working chamber of a cutter spoke. SOLUTION: This shield machine has a working chamber 8 formed inside...
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| creator | MAEHARA NOBUYUKI TOMIZUKA KAZUHISA MIZUTANI TSUTOMU YOKOSAKI TERUMASA HONDA MASATO OTSUKA TAKAYOSHI |
| description | PROBLEM TO BE SOLVED: To provide a shield machine such that the work of replacing a cutter bit can be performed safely without hindrance by surely preventing water, earth and sand from entering the working chamber of a cutter spoke. SOLUTION: This shield machine has a working chamber 8 formed inside the cutter spoke 2-1 of a cutter head 2, so that a cutter bit can be replaceably attached to the cutter spoke 2-1 from the working chamber 8. The shield machine is provided with a central closed chamber 7-1 having an inner entrance 11a enabling compressed air to be supplied into the working chamber 8 and capable of being opened and closed by a closing device, an outer entrance which can be opened and closed by the closing device, and an internal space that allows passage therein, and a peripheral closed chamber 7-2. A center drum 2-3 rotatably installed at the center of the shield body 1 is communicated with the central closed chamber 7-1 and the working chamber 8, and the peripheral closed chamber 7-2 is longitudinally movably installed so that when moved forward, it can be hermetically communicated with the working chamber 8. |
| format | Patent |
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SOLUTION: This shield machine has a working chamber 8 formed inside the cutter spoke 2-1 of a cutter head 2, so that a cutter bit can be replaceably attached to the cutter spoke 2-1 from the working chamber 8. The shield machine is provided with a central closed chamber 7-1 having an inner entrance 11a enabling compressed air to be supplied into the working chamber 8 and capable of being opened and closed by a closing device, an outer entrance which can be opened and closed by the closing device, and an internal space that allows passage therein, and a peripheral closed chamber 7-2. A center drum 2-3 rotatably installed at the center of the shield body 1 is communicated with the central closed chamber 7-1 and the working chamber 8, and the peripheral closed chamber 7-2 is longitudinally movably installed so that when moved forward, it can be hermetically communicated with the working chamber 8.</description><edition>7</edition><language>eng</language><subject>EARTH DRILLING ; FIXED CONSTRUCTIONS ; GALLERIES ; LARGE UNDERGROUND CHAMBERS ; MINING ; SHAFTS ; TUNNELS</subject><creationdate>2000</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20001205&DB=EPODOC&CC=JP&NR=2000337087A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20001205&DB=EPODOC&CC=JP&NR=2000337087A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MAEHARA NOBUYUKI</creatorcontrib><creatorcontrib>TOMIZUKA KAZUHISA</creatorcontrib><creatorcontrib>MIZUTANI TSUTOMU</creatorcontrib><creatorcontrib>YOKOSAKI TERUMASA</creatorcontrib><creatorcontrib>HONDA MASATO</creatorcontrib><creatorcontrib>OTSUKA TAKAYOSHI</creatorcontrib><title>SHIELD MACHINE</title><description>PROBLEM TO BE SOLVED: To provide a shield machine such that the work of replacing a cutter bit can be performed safely without hindrance by surely preventing water, earth and sand from entering the working chamber of a cutter spoke. SOLUTION: This shield machine has a working chamber 8 formed inside the cutter spoke 2-1 of a cutter head 2, so that a cutter bit can be replaceably attached to the cutter spoke 2-1 from the working chamber 8. The shield machine is provided with a central closed chamber 7-1 having an inner entrance 11a enabling compressed air to be supplied into the working chamber 8 and capable of being opened and closed by a closing device, an outer entrance which can be opened and closed by the closing device, and an internal space that allows passage therein, and a peripheral closed chamber 7-2. A center drum 2-3 rotatably installed at the center of the shield body 1 is communicated with the central closed chamber 7-1 and the working chamber 8, and the peripheral closed chamber 7-2 is longitudinally movably installed so that when moved forward, it can be hermetically communicated with the working chamber 8.</description><subject>EARTH DRILLING</subject><subject>FIXED CONSTRUCTIONS</subject><subject>GALLERIES</subject><subject>LARGE UNDERGROUND CHAMBERS</subject><subject>MINING</subject><subject>SHAFTS</subject><subject>TUNNELS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2000</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOAL9vB09XFR8HV09vD0c-VhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFeAUYGBgbGxuYGFuaOxkQpAgDwlB0z</recordid><startdate>20001205</startdate><enddate>20001205</enddate><creator>MAEHARA NOBUYUKI</creator><creator>TOMIZUKA KAZUHISA</creator><creator>MIZUTANI TSUTOMU</creator><creator>YOKOSAKI TERUMASA</creator><creator>HONDA MASATO</creator><creator>OTSUKA TAKAYOSHI</creator><scope>EVB</scope></search><sort><creationdate>20001205</creationdate><title>SHIELD MACHINE</title><author>MAEHARA NOBUYUKI ; TOMIZUKA KAZUHISA ; MIZUTANI TSUTOMU ; YOKOSAKI TERUMASA ; HONDA MASATO ; OTSUKA TAKAYOSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2000337087A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2000</creationdate><topic>EARTH DRILLING</topic><topic>FIXED CONSTRUCTIONS</topic><topic>GALLERIES</topic><topic>LARGE UNDERGROUND CHAMBERS</topic><topic>MINING</topic><topic>SHAFTS</topic><topic>TUNNELS</topic><toplevel>online_resources</toplevel><creatorcontrib>MAEHARA NOBUYUKI</creatorcontrib><creatorcontrib>TOMIZUKA KAZUHISA</creatorcontrib><creatorcontrib>MIZUTANI TSUTOMU</creatorcontrib><creatorcontrib>YOKOSAKI TERUMASA</creatorcontrib><creatorcontrib>HONDA MASATO</creatorcontrib><creatorcontrib>OTSUKA TAKAYOSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MAEHARA NOBUYUKI</au><au>TOMIZUKA KAZUHISA</au><au>MIZUTANI TSUTOMU</au><au>YOKOSAKI TERUMASA</au><au>HONDA MASATO</au><au>OTSUKA TAKAYOSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>SHIELD MACHINE</title><date>2000-12-05</date><risdate>2000</risdate><abstract>PROBLEM TO BE SOLVED: To provide a shield machine such that the work of replacing a cutter bit can be performed safely without hindrance by surely preventing water, earth and sand from entering the working chamber of a cutter spoke. SOLUTION: This shield machine has a working chamber 8 formed inside the cutter spoke 2-1 of a cutter head 2, so that a cutter bit can be replaceably attached to the cutter spoke 2-1 from the working chamber 8. The shield machine is provided with a central closed chamber 7-1 having an inner entrance 11a enabling compressed air to be supplied into the working chamber 8 and capable of being opened and closed by a closing device, an outer entrance which can be opened and closed by the closing device, and an internal space that allows passage therein, and a peripheral closed chamber 7-2. A center drum 2-3 rotatably installed at the center of the shield body 1 is communicated with the central closed chamber 7-1 and the working chamber 8, and the peripheral closed chamber 7-2 is longitudinally movably installed so that when moved forward, it can be hermetically communicated with the working chamber 8.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS |
| title | SHIELD MACHINE |
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