HYDRAULIC CONTROL DEVICE
PROBLEM TO BE SOLVED: To prevent occurrence of a hydraulic overshoot by preventing a blockage state in an oil passage in switching, when a discharge mode of a variable capacity pump is switched to full discharge or half discharge.SOLUTION: A main discharge port 1e of a pump 1 is connected to a contr...
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| creator | NAMIKI KATSUYUKI |
| description | PROBLEM TO BE SOLVED: To prevent occurrence of a hydraulic overshoot by preventing a blockage state in an oil passage in switching, when a discharge mode of a variable capacity pump is switched to full discharge or half discharge.SOLUTION: A main discharge port 1e of a pump 1 is connected to a control valve 6 through a main oil passage 5, and a sub-discharge port 1f is connected to a duty solenoid valve 8 through a sub-oil passage 7. Both the oil passages 5, 7 are connected by a bypass oil passage 10, and a check valve 11 permitting flow from a sub-oil passage 7 side to the main oil passage 5 is disposed in the bypass oil passage 10. When the duty solenoid valve 8 is opened, a sub-discharge pressure P2 is reduced, the check valve 11 is closed to bring a half discharge mode. When the duty solenoid valve 8 is closed, the sub-discharge pressure P2 is raised, and the check valve 11 is opened to be a full discharge mode to flow to a main oil passage 5 side. As a blockage state is not formed in the sub-oil passage 7 in switching the discharge mode, occurrence of hydraulic overshoot can be prevented.SELECTED DRAWING: Figure 1
【課題】可変容量ポンプの吐出モードを全吐出と半吐出とに切換えるに際し、切換時の油路内の閉塞状態を回避して油圧オーバシュートの発生を防止する。【解決手段】ポンプ１のメイン吐出ポート１ｅを、メイン油路５を介してコントロールバルブ６に連通し、サブ吐出ポート１ｆをサブ油路７を介してデューティソレノイド弁８に連通する。又両油路５，７間をバイパス油路１０で連通し、バイパス油路１０に、サブ油路７側からメイン油路５への流れを許容する逆止弁１１を介装する。デューティソレノイド弁８が開弁するとサブ吐出圧Ｐ２が減少し、逆止弁１１が閉弁して半吐出モードとなる。又デューティソレノイド弁８が閉弁するとサブ吐出圧Ｐ２が上昇し逆止弁１１を開弁させてメイン油路５側へ流れる全吐出モードとなる。吐出モードが切り替わる際にサブ油路７に閉塞状態が形成されないため油圧オーバシュートの発生を防止することができる。【選択図】図１ |
| format | Patent |
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【課題】可変容量ポンプの吐出モードを全吐出と半吐出とに切換えるに際し、切換時の油路内の閉塞状態を回避して油圧オーバシュートの発生を防止する。【解決手段】ポンプ１のメイン吐出ポート１ｅを、メイン油路５を介してコントロールバルブ６に連通し、サブ吐出ポート１ｆをサブ油路７を介してデューティソレノイド弁８に連通する。又両油路５，７間をバイパス油路１０で連通し、バイパス油路１０に、サブ油路７側からメイン油路５への流れを許容する逆止弁１１を介装する。デューティソレノイド弁８が開弁するとサブ吐出圧Ｐ２が減少し、逆止弁１１が閉弁して半吐出モードとなる。又デューティソレノイド弁８が閉弁するとサブ吐出圧Ｐ２が上昇し逆止弁１１を開弁させてメイン油路５側へ流れる全吐出モードとなる。吐出モードが切り替わる際にサブ油路７に閉塞状態が形成されないため油圧オーバシュートの発生を防止することができる。【選択図】図１</description><language>eng ; jpn</language><subject>BLASTING ; ENGINEERING ELEMENTS AND UNITS ; GEARING ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>2017</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=20170928&DB=EPODOC&CC=JP&NR=2017172491A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170928&DB=EPODOC&CC=JP&NR=2017172491A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NAMIKI KATSUYUKI</creatorcontrib><title>HYDRAULIC CONTROL DEVICE</title><description>PROBLEM TO BE SOLVED: To prevent occurrence of a hydraulic overshoot by preventing a blockage state in an oil passage in switching, when a discharge mode of a variable capacity pump is switched to full discharge or half discharge.SOLUTION: A main discharge port 1e of a pump 1 is connected to a control valve 6 through a main oil passage 5, and a sub-discharge port 1f is connected to a duty solenoid valve 8 through a sub-oil passage 7. Both the oil passages 5, 7 are connected by a bypass oil passage 10, and a check valve 11 permitting flow from a sub-oil passage 7 side to the main oil passage 5 is disposed in the bypass oil passage 10. When the duty solenoid valve 8 is opened, a sub-discharge pressure P2 is reduced, the check valve 11 is closed to bring a half discharge mode. When the duty solenoid valve 8 is closed, the sub-discharge pressure P2 is raised, and the check valve 11 is opened to be a full discharge mode to flow to a main oil passage 5 side. As a blockage state is not formed in the sub-oil passage 7 in switching the discharge mode, occurrence of hydraulic overshoot can be prevented.SELECTED DRAWING: Figure 1
【課題】可変容量ポンプの吐出モードを全吐出と半吐出とに切換えるに際し、切換時の油路内の閉塞状態を回避して油圧オーバシュートの発生を防止する。【解決手段】ポンプ１のメイン吐出ポート１ｅを、メイン油路５を介してコントロールバルブ６に連通し、サブ吐出ポート１ｆをサブ油路７を介してデューティソレノイド弁８に連通する。又両油路５，７間をバイパス油路１０で連通し、バイパス油路１０に、サブ油路７側からメイン油路５への流れを許容する逆止弁１１を介装する。デューティソレノイド弁８が開弁するとサブ吐出圧Ｐ２が減少し、逆止弁１１が閉弁して半吐出モードとなる。又デューティソレノイド弁８が閉弁するとサブ吐出圧Ｐ２が上昇し逆止弁１１を開弁させてメイン油路５側へ流れる全吐出モードとなる。吐出モードが切り替わる際にサブ油路７に閉塞状態が形成されないため油圧オーバシュートの発生を防止することができる。【選択図】図１</description><subject>BLASTING</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>GEARING</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</subject><subject>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</subject><subject>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS</subject><subject>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJDwiHQJcgz18XRWcPb3Cwny91FwcQ3zdHblYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBobmhuZGJpaGjsZEKQIANREgLQ</recordid><startdate>20170928</startdate><enddate>20170928</enddate><creator>NAMIKI KATSUYUKI</creator><scope>EVB</scope></search><sort><creationdate>20170928</creationdate><title>HYDRAULIC CONTROL DEVICE</title><author>NAMIKI KATSUYUKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2017172491A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2017</creationdate><topic>BLASTING</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>GEARING</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</topic><topic>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</topic><topic>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS</topic><topic>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>NAMIKI KATSUYUKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NAMIKI KATSUYUKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>HYDRAULIC CONTROL DEVICE</title><date>2017-09-28</date><risdate>2017</risdate><abstract>PROBLEM TO BE SOLVED: To prevent occurrence of a hydraulic overshoot by preventing a blockage state in an oil passage in switching, when a discharge mode of a variable capacity pump is switched to full discharge or half discharge.SOLUTION: A main discharge port 1e of a pump 1 is connected to a control valve 6 through a main oil passage 5, and a sub-discharge port 1f is connected to a duty solenoid valve 8 through a sub-oil passage 7. Both the oil passages 5, 7 are connected by a bypass oil passage 10, and a check valve 11 permitting flow from a sub-oil passage 7 side to the main oil passage 5 is disposed in the bypass oil passage 10. When the duty solenoid valve 8 is opened, a sub-discharge pressure P2 is reduced, the check valve 11 is closed to bring a half discharge mode. When the duty solenoid valve 8 is closed, the sub-discharge pressure P2 is raised, and the check valve 11 is opened to be a full discharge mode to flow to a main oil passage 5 side. As a blockage state is not formed in the sub-oil passage 7 in switching the discharge mode, occurrence of hydraulic overshoot can be prevented.SELECTED DRAWING: Figure 1
【課題】可変容量ポンプの吐出モードを全吐出と半吐出とに切換えるに際し、切換時の油路内の閉塞状態を回避して油圧オーバシュートの発生を防止する。【解決手段】ポンプ１のメイン吐出ポート１ｅを、メイン油路５を介してコントロールバルブ６に連通し、サブ吐出ポート１ｆをサブ油路７を介してデューティソレノイド弁８に連通する。又両油路５，７間をバイパス油路１０で連通し、バイパス油路１０に、サブ油路７側からメイン油路５への流れを許容する逆止弁１１を介装する。デューティソレノイド弁８が開弁するとサブ吐出圧Ｐ２が減少し、逆止弁１１が閉弁して半吐出モードとなる。又デューティソレノイド弁８が閉弁するとサブ吐出圧Ｐ２が上昇し逆止弁１１を開弁させてメイン油路５側へ流れる全吐出モードとなる。吐出モードが切り替わる際にサブ油路７に閉塞状態が形成されないため油圧オーバシュートの発生を防止することができる。【選択図】図１</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS THERMAL INSULATION IN GENERAL WEAPONS |
| title | HYDRAULIC CONTROL DEVICE |
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