HYDRAULIC CONTROL CIRCUIT FOR PILE-DRIVING HAMMER
PURPOSE:To prevent the rising of oil temperature and to absorb a surge pressure at a falling time of a hammer, by a method wherein a pipe line with a relief valve, connecting pipe lines for connecting a direction switch valve and a hydraulic cylinder, is installed, and an accumulator and a bypass pi...
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| creator | SAITOU TAKEO OOUCHI MINORU TSUNABUCHI MASAKI HARA SEIICHIROU AZEGAMI MAKOTO |
| description | PURPOSE:To prevent the rising of oil temperature and to absorb a surge pressure at a falling time of a hammer, by a method wherein a pipe line with a relief valve, connecting pipe lines for connecting a direction switch valve and a hydraulic cylinder, is installed, and an accumulator and a bypass pipe are mounted at a return pipe line. CONSTITUTION:In a hydraulic circuit in which a hydraulic cylinder 10 for hammer-striking is controlled by means of a fixed capacity pump 2, a control valve 4, variable capacity pumps 3, 3' control valves 4A, 4B, switch valves 8, 8' and a direction switch valve 9, drive pipe lines, which connect together the direction switch valve 9 and the hydraulic cylinder 10, are connected through a relief valve 151, and an accumulator 18 is positioned at a return pipe line 11. Additionally, a bypass line 131 is branched from the return pipe line 11 through a checking valve 141, and this contributes to the prevention of the rise in oil temperature and reduction of an adverse influence exerted by a surge voltage. |
| format | Patent |
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CONSTITUTION:In a hydraulic circuit in which a hydraulic cylinder 10 for hammer-striking is controlled by means of a fixed capacity pump 2, a control valve 4, variable capacity pumps 3, 3' control valves 4A, 4B, switch valves 8, 8' and a direction switch valve 9, drive pipe lines, which connect together the direction switch valve 9 and the hydraulic cylinder 10, are connected through a relief valve 151, and an accumulator 18 is positioned at a return pipe line 11. Additionally, a bypass line 131 is branched from the return pipe line 11 through a checking valve 141, and this contributes to the prevention of the rise in oil temperature and reduction of an adverse influence exerted by a surge voltage.</description><language>eng</language><subject>BLASTING ; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR ; EMBANKMENTS ; EXCAVATIONS ; FIXED CONSTRUCTIONS ; FLUID-PRESSURE ACTUATORS ; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS ; FOUNDATIONS ; HEATING ; HYDRAULIC ENGINEERING ; HYDRAULICS OR PNEUMATICS IN GENERAL ; LIGHTING ; MECHANICAL ENGINEERING ; SOIL SHIFTING ; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL ; UNDERGROUND OR UNDERWATER STRUCTURES ; WEAPONS</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=19820401&DB=EPODOC&CC=JP&NR=S5754625A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19820401&DB=EPODOC&CC=JP&NR=S5754625A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SAITOU TAKEO</creatorcontrib><creatorcontrib>OOUCHI MINORU</creatorcontrib><creatorcontrib>TSUNABUCHI MASAKI</creatorcontrib><creatorcontrib>HARA SEIICHIROU</creatorcontrib><creatorcontrib>AZEGAMI MAKOTO</creatorcontrib><title>HYDRAULIC CONTROL CIRCUIT FOR PILE-DRIVING HAMMER</title><description>PURPOSE:To prevent the rising of oil temperature and to absorb a surge pressure at a falling time of a hammer, by a method wherein a pipe line with a relief valve, connecting pipe lines for connecting a direction switch valve and a hydraulic cylinder, is installed, and an accumulator and a bypass pipe are mounted at a return pipe line. CONSTITUTION:In a hydraulic circuit in which a hydraulic cylinder 10 for hammer-striking is controlled by means of a fixed capacity pump 2, a control valve 4, variable capacity pumps 3, 3' control valves 4A, 4B, switch valves 8, 8' and a direction switch valve 9, drive pipe lines, which connect together the direction switch valve 9 and the hydraulic cylinder 10, are connected through a relief valve 151, and an accumulator 18 is positioned at a return pipe line 11. Additionally, a bypass line 131 is branched from the return pipe line 11 through a checking valve 141, and this contributes to the prevention of the rise in oil temperature and reduction of an adverse influence exerted by a surge voltage.</description><subject>BLASTING</subject><subject>DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR</subject><subject>EMBANKMENTS</subject><subject>EXCAVATIONS</subject><subject>FIXED CONSTRUCTIONS</subject><subject>FLUID-PRESSURE ACTUATORS</subject><subject>FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS</subject><subject>FOUNDATIONS</subject><subject>HEATING</subject><subject>HYDRAULIC ENGINEERING</subject><subject>HYDRAULICS OR PNEUMATICS IN GENERAL</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>SOIL SHIFTING</subject><subject>SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL</subject><subject>UNDERGROUND OR UNDERWATER STRUCTURES</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1982</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDD0iHQJcgz18XRWcPb3Cwny91Fw9gxyDvUMUXDzD1II8PRx1XUJ8gzz9HNX8HD09XUN4mFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8V4BwabmpiZmRqaOxkQoAQAdryaW</recordid><startdate>19820401</startdate><enddate>19820401</enddate><creator>SAITOU TAKEO</creator><creator>OOUCHI MINORU</creator><creator>TSUNABUCHI MASAKI</creator><creator>HARA SEIICHIROU</creator><creator>AZEGAMI MAKOTO</creator><scope>EVB</scope></search><sort><creationdate>19820401</creationdate><title>HYDRAULIC CONTROL CIRCUIT FOR PILE-DRIVING HAMMER</title><author>SAITOU TAKEO ; OOUCHI MINORU ; TSUNABUCHI MASAKI ; HARA SEIICHIROU ; AZEGAMI MAKOTO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS5754625A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1982</creationdate><topic>BLASTING</topic><topic>DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR</topic><topic>EMBANKMENTS</topic><topic>EXCAVATIONS</topic><topic>FIXED CONSTRUCTIONS</topic><topic>FLUID-PRESSURE ACTUATORS</topic><topic>FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS</topic><topic>FOUNDATIONS</topic><topic>HEATING</topic><topic>HYDRAULIC ENGINEERING</topic><topic>HYDRAULICS OR PNEUMATICS IN GENERAL</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>SOIL SHIFTING</topic><topic>SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL</topic><topic>UNDERGROUND OR UNDERWATER STRUCTURES</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>SAITOU TAKEO</creatorcontrib><creatorcontrib>OOUCHI MINORU</creatorcontrib><creatorcontrib>TSUNABUCHI MASAKI</creatorcontrib><creatorcontrib>HARA SEIICHIROU</creatorcontrib><creatorcontrib>AZEGAMI MAKOTO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SAITOU TAKEO</au><au>OOUCHI MINORU</au><au>TSUNABUCHI MASAKI</au><au>HARA SEIICHIROU</au><au>AZEGAMI MAKOTO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>HYDRAULIC CONTROL CIRCUIT FOR PILE-DRIVING HAMMER</title><date>1982-04-01</date><risdate>1982</risdate><abstract>PURPOSE:To prevent the rising of oil temperature and to absorb a surge pressure at a falling time of a hammer, by a method wherein a pipe line with a relief valve, connecting pipe lines for connecting a direction switch valve and a hydraulic cylinder, is installed, and an accumulator and a bypass pipe are mounted at a return pipe line. CONSTITUTION:In a hydraulic circuit in which a hydraulic cylinder 10 for hammer-striking is controlled by means of a fixed capacity pump 2, a control valve 4, variable capacity pumps 3, 3' control valves 4A, 4B, switch valves 8, 8' and a direction switch valve 9, drive pipe lines, which connect together the direction switch valve 9 and the hydraulic cylinder 10, are connected through a relief valve 151, and an accumulator 18 is positioned at a return pipe line 11. Additionally, a bypass line 131 is branched from the return pipe line 11 through a checking valve 141, and this contributes to the prevention of the rise in oil temperature and reduction of an adverse influence exerted by a surge voltage.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FOUNDATIONS HEATING HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL UNDERGROUND OR UNDERWATER STRUCTURES WEAPONS |
| title | HYDRAULIC CONTROL CIRCUIT FOR PILE-DRIVING HAMMER |
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