OIL-PRESSURE CIRCUIT FOR OIL-PRESSURE SHOVEL
PURPOSE:To prevent the meandering running of an oil-pressure shovel by using a system in which left and right-handed running motors are connected in parallel with independent oil-pressure pumps, the discharge pipeline of each oil-pressure pump is connected to the other through an electromagnetic com...
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| creator | IKEDA TOSHIMICHI HIRATA TOUICHI |
| description | PURPOSE:To prevent the meandering running of an oil-pressure shovel by using a system in which left and right-handed running motors are connected in parallel with independent oil-pressure pumps, the discharge pipeline of each oil-pressure pump is connected to the other through an electromagnetic communication valve, and the valve is opened or closed by a switching valve. CONSTITUTION:Since an electromagnetic communication valve 23 is closed when operating left and right-handed running switch valves 14 and 18, the pressure oils of oil- pressure pumps 12 and 13 are supplied to each of left and right-handed running motors 6 and 7, whereupon the speeds of the left and right-handed motors 6 and 7 become values corresponding to the operation amounts of the valves 14 and 18. Under the condition, when operating a turning switch valve 16, for example, the communication valve 23 is opened. Therefore, part of the pressure oil of the oil-pressure pump 12 is supplied to the turning motor 8 and part of the pressure oil of the pump 13 is supplied to the left-handed motor 6 through the communication valve 23 even when the amount of pressure oil to be supplied to the left-handed motor 6 is reduced. By this, the reduction rate of the speed of the left-handed motor 6 is lessened, the amount of pressure oil to be supplied from the pump 13 to the right-handed motor 7 is reduced, and the speed of the right-haded motor 7 is also reduced. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JPS57197333A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JPS57197333A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JPS57197333A3</originalsourceid><addsrcrecordid>eNrjZNDx9_TRDQhyDQ4ODXJVcPYMcg71DFFw8w9SQJEI9vAPc_XhYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxXgHBpuaGlubGxsaOxsSoAQDBKSXW</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>OIL-PRESSURE CIRCUIT FOR OIL-PRESSURE SHOVEL</title><source>esp@cenet</source><creator>IKEDA TOSHIMICHI ; HIRATA TOUICHI</creator><creatorcontrib>IKEDA TOSHIMICHI ; HIRATA TOUICHI</creatorcontrib><description>PURPOSE:To prevent the meandering running of an oil-pressure shovel by using a system in which left and right-handed running motors are connected in parallel with independent oil-pressure pumps, the discharge pipeline of each oil-pressure pump is connected to the other through an electromagnetic communication valve, and the valve is opened or closed by a switching valve. CONSTITUTION:Since an electromagnetic communication valve 23 is closed when operating left and right-handed running switch valves 14 and 18, the pressure oils of oil- pressure pumps 12 and 13 are supplied to each of left and right-handed running motors 6 and 7, whereupon the speeds of the left and right-handed motors 6 and 7 become values corresponding to the operation amounts of the valves 14 and 18. Under the condition, when operating a turning switch valve 16, for example, the communication valve 23 is opened. Therefore, part of the pressure oil of the oil-pressure pump 12 is supplied to the turning motor 8 and part of the pressure oil of the pump 13 is supplied to the left-handed motor 6 through the communication valve 23 even when the amount of pressure oil to be supplied to the left-handed motor 6 is reduced. By this, the reduction rate of the speed of the left-handed motor 6 is lessened, the amount of pressure oil to be supplied from the pump 13 to the right-handed motor 7 is reduced, and the speed of the right-haded motor 7 is also reduced.</description><language>eng</language><subject>DREDGING ; FIXED CONSTRUCTIONS ; FOUNDATIONS ; HYDRAULIC ENGINEERING ; SOIL SHIFTING</subject><creationdate>1982</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=19821203&DB=EPODOC&CC=JP&NR=S57197333A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19821203&DB=EPODOC&CC=JP&NR=S57197333A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>IKEDA TOSHIMICHI</creatorcontrib><creatorcontrib>HIRATA TOUICHI</creatorcontrib><title>OIL-PRESSURE CIRCUIT FOR OIL-PRESSURE SHOVEL</title><description>PURPOSE:To prevent the meandering running of an oil-pressure shovel by using a system in which left and right-handed running motors are connected in parallel with independent oil-pressure pumps, the discharge pipeline of each oil-pressure pump is connected to the other through an electromagnetic communication valve, and the valve is opened or closed by a switching valve. CONSTITUTION:Since an electromagnetic communication valve 23 is closed when operating left and right-handed running switch valves 14 and 18, the pressure oils of oil- pressure pumps 12 and 13 are supplied to each of left and right-handed running motors 6 and 7, whereupon the speeds of the left and right-handed motors 6 and 7 become values corresponding to the operation amounts of the valves 14 and 18. Under the condition, when operating a turning switch valve 16, for example, the communication valve 23 is opened. Therefore, part of the pressure oil of the oil-pressure pump 12 is supplied to the turning motor 8 and part of the pressure oil of the pump 13 is supplied to the left-handed motor 6 through the communication valve 23 even when the amount of pressure oil to be supplied to the left-handed motor 6 is reduced. By this, the reduction rate of the speed of the left-handed motor 6 is lessened, the amount of pressure oil to be supplied from the pump 13 to the right-handed motor 7 is reduced, and the speed of the right-haded motor 7 is also reduced.</description><subject>DREDGING</subject><subject>FIXED CONSTRUCTIONS</subject><subject>FOUNDATIONS</subject><subject>HYDRAULIC ENGINEERING</subject><subject>SOIL SHIFTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1982</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNDx9_TRDQhyDQ4ODXJVcPYMcg71DFFw8w9SQJEI9vAPc_XhYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxXgHBpuaGlubGxsaOxsSoAQDBKSXW</recordid><startdate>19821203</startdate><enddate>19821203</enddate><creator>IKEDA TOSHIMICHI</creator><creator>HIRATA TOUICHI</creator><scope>EVB</scope></search><sort><creationdate>19821203</creationdate><title>OIL-PRESSURE CIRCUIT FOR OIL-PRESSURE SHOVEL</title><author>IKEDA TOSHIMICHI ; HIRATA TOUICHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS57197333A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1982</creationdate><topic>DREDGING</topic><topic>FIXED CONSTRUCTIONS</topic><topic>FOUNDATIONS</topic><topic>HYDRAULIC ENGINEERING</topic><topic>SOIL SHIFTING</topic><toplevel>online_resources</toplevel><creatorcontrib>IKEDA TOSHIMICHI</creatorcontrib><creatorcontrib>HIRATA TOUICHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>IKEDA TOSHIMICHI</au><au>HIRATA TOUICHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>OIL-PRESSURE CIRCUIT FOR OIL-PRESSURE SHOVEL</title><date>1982-12-03</date><risdate>1982</risdate><abstract>PURPOSE:To prevent the meandering running of an oil-pressure shovel by using a system in which left and right-handed running motors are connected in parallel with independent oil-pressure pumps, the discharge pipeline of each oil-pressure pump is connected to the other through an electromagnetic communication valve, and the valve is opened or closed by a switching valve. CONSTITUTION:Since an electromagnetic communication valve 23 is closed when operating left and right-handed running switch valves 14 and 18, the pressure oils of oil- pressure pumps 12 and 13 are supplied to each of left and right-handed running motors 6 and 7, whereupon the speeds of the left and right-handed motors 6 and 7 become values corresponding to the operation amounts of the valves 14 and 18. Under the condition, when operating a turning switch valve 16, for example, the communication valve 23 is opened. Therefore, part of the pressure oil of the oil-pressure pump 12 is supplied to the turning motor 8 and part of the pressure oil of the pump 13 is supplied to the left-handed motor 6 through the communication valve 23 even when the amount of pressure oil to be supplied to the left-handed motor 6 is reduced. By this, the reduction rate of the speed of the left-handed motor 6 is lessened, the amount of pressure oil to be supplied from the pump 13 to the right-handed motor 7 is reduced, and the speed of the right-haded motor 7 is also reduced.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | DREDGING FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING |
| title | OIL-PRESSURE CIRCUIT FOR OIL-PRESSURE SHOVEL |
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