HYDRAULIC DRIVE APPRARATUS FOR CONSTRUCTION MACHINE
Provided is a hydraulic drive apparatus for a construction machine capable of achieving both of cavitation prevention and improvement of regeneration efficiency. The apparatus includes a regenerative motor (47) configured to regenerate energy of hydraulic fluid discharged from a slewing motor (33),...
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| creator | OKA, Hidekazu |
| description | Provided is a hydraulic drive apparatus for a construction machine capable of achieving both of cavitation prevention and improvement of regeneration efficiency. The apparatus includes a regenerative motor (47) configured to regenerate energy of hydraulic fluid discharged from a slewing motor (33), a first regeneration tank line (61) for returning regeneration discharge fluid from the regenerative motor (47) to a tank (T) through a back pressure valve (45) which is provided in a makeup line (44), a second regeneration tank line (62) for returning the regeneration discharge fluid directly to the tank (T) so as to bypass the back pressure valve (45), a regeneration-tank-line selector valve (63), and a regeneration-tank-line-selection control section (51) configured to shift the regeneration-tank-line selector valve (63) to pass the regeneration discharge fluid through the first regeneration tank line (61) during slewing deceleration and otherwise through the second regeneration tank line (62). |
| format | Patent |
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The apparatus includes a regenerative motor (47) configured to regenerate energy of hydraulic fluid discharged from a slewing motor (33), a first regeneration tank line (61) for returning regeneration discharge fluid from the regenerative motor (47) to a tank (T) through a back pressure valve (45) which is provided in a makeup line (44), a second regeneration tank line (62) for returning the regeneration discharge fluid directly to the tank (T) so as to bypass the back pressure valve (45), a regeneration-tank-line selector valve (63), and a regeneration-tank-line-selection control section (51) configured to shift the regeneration-tank-line selector valve (63) to pass the regeneration discharge fluid through the first regeneration tank line (61) during slewing deceleration and otherwise through the second regeneration tank line (62).</description><language>eng ; fre ; ger</language><subject>BLASTING ; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR ; DREDGING ; 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 ; WEAPONS</subject><creationdate>2016</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=20161221&DB=EPODOC&CC=EP&NR=3106677A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20161221&DB=EPODOC&CC=EP&NR=3106677A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>OKA, Hidekazu</creatorcontrib><title>HYDRAULIC DRIVE APPRARATUS FOR CONSTRUCTION MACHINE</title><description>Provided is a hydraulic drive apparatus for a construction machine capable of achieving both of cavitation prevention and improvement of regeneration efficiency. The apparatus includes a regenerative motor (47) configured to regenerate energy of hydraulic fluid discharged from a slewing motor (33), a first regeneration tank line (61) for returning regeneration discharge fluid from the regenerative motor (47) to a tank (T) through a back pressure valve (45) which is provided in a makeup line (44), a second regeneration tank line (62) for returning the regeneration discharge fluid directly to the tank (T) so as to bypass the back pressure valve (45), a regeneration-tank-line selector valve (63), and a regeneration-tank-line-selection control section (51) configured to shift the regeneration-tank-line selector valve (63) to pass the regeneration discharge fluid through the first regeneration tank line (61) during slewing deceleration and otherwise through the second regeneration tank line (62).</description><subject>BLASTING</subject><subject>DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR</subject><subject>DREDGING</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>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2016</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDD2iHQJcgz18XRWcAnyDHNVcAwICHIMcgwJDVZw8w9ScPb3Cw4JCnUO8fT3U_B1dPbw9HPlYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgHGhgZmZubmjobGRCgBAHdNJwc</recordid><startdate>20161221</startdate><enddate>20161221</enddate><creator>OKA, Hidekazu</creator><scope>EVB</scope></search><sort><creationdate>20161221</creationdate><title>HYDRAULIC DRIVE APPRARATUS FOR CONSTRUCTION MACHINE</title><author>OKA, Hidekazu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3106677A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2016</creationdate><topic>BLASTING</topic><topic>DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR</topic><topic>DREDGING</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>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>OKA, Hidekazu</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>OKA, Hidekazu</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>HYDRAULIC DRIVE APPRARATUS FOR CONSTRUCTION MACHINE</title><date>2016-12-21</date><risdate>2016</risdate><abstract>Provided is a hydraulic drive apparatus for a construction machine capable of achieving both of cavitation prevention and improvement of regeneration efficiency. The apparatus includes a regenerative motor (47) configured to regenerate energy of hydraulic fluid discharged from a slewing motor (33), a first regeneration tank line (61) for returning regeneration discharge fluid from the regenerative motor (47) to a tank (T) through a back pressure valve (45) which is provided in a makeup line (44), a second regeneration tank line (62) for returning the regeneration discharge fluid directly to the tank (T) so as to bypass the back pressure valve (45), a regeneration-tank-line selector valve (63), and a regeneration-tank-line-selection control section (51) configured to shift the regeneration-tank-line selector valve (63) to pass the regeneration discharge fluid through the first regeneration tank line (61) during slewing deceleration and otherwise through the second regeneration tank line (62).</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| source | esp@cenet |
| subjects | BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DREDGING 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 WEAPONS |
| title | HYDRAULIC DRIVE APPRARATUS FOR CONSTRUCTION MACHINE |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-31T13%3A00%3A13IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=OKA,%20Hidekazu&rft.date=2016-12-21&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EEP3106677A1%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |