CONSTRUCTION MACHINERY
Provided is construction machinery that can detect in real time during work that an excess flow control valve is stuck open without decreasing the speed of work. The construction machinery is providedwith: an excess flow control valve control unit that outputs a close command to an excess flow contr...
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| creator | TAKAHASHI HIROMASA SHIMIZU JURI HIRAKU KENJI SUGIKI SHOUHEI SAITOH TEPPEI |
| description | Provided is construction machinery that can detect in real time during work that an excess flow control valve is stuck open without decreasing the speed of work. The construction machinery is providedwith: an excess flow control valve control unit that outputs a close command to an excess flow control valve when starting an operation for which a control input signal from an operation lever deviceis detected; a pump discharge control unit that outputs a discharge flow command to a regulator for an open circuit pump; an assist valve control unit that continues output of the previous close command to an assist valve; a stuck detection determination unit that compares a pressure signal and a preset threshold value, determines that the excess flow control valve is stuck open if the pressure signal is less than the threshold value, and determines that the excess flow control valve is normal if the pressure signal exceeds the threshold value; and a stop signal generation unit to which a stuck determination signal is |
| format | Patent |
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The construction machinery is providedwith: an excess flow control valve control unit that outputs a close command to an excess flow control valve when starting an operation for which a control input signal from an operation lever deviceis detected; a pump discharge control unit that outputs a discharge flow command to a regulator for an open circuit pump; an assist valve control unit that continues output of the previous close command to an assist valve; a stuck detection determination unit that compares a pressure signal and a preset threshold value, determines that the excess flow control valve is stuck open if the pressure signal is less than the threshold value, and determines that the excess flow control valve is normal if the pressure signal exceeds the threshold value; and a stop signal generation unit to which a stuck determination signal is</description><language>chi ; eng</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>2018</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=20181109&DB=EPODOC&CC=CN&NR=108779790A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181109&DB=EPODOC&CC=CN&NR=108779790A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TAKAHASHI HIROMASA</creatorcontrib><creatorcontrib>SHIMIZU JURI</creatorcontrib><creatorcontrib>HIRAKU KENJI</creatorcontrib><creatorcontrib>SUGIKI SHOUHEI</creatorcontrib><creatorcontrib>SAITOH TEPPEI</creatorcontrib><title>CONSTRUCTION MACHINERY</title><description>Provided is construction machinery that can detect in real time during work that an excess flow control valve is stuck open without decreasing the speed of work. The construction machinery is providedwith: an excess flow control valve control unit that outputs a close command to an excess flow control valve when starting an operation for which a control input signal from an operation lever deviceis detected; a pump discharge control unit that outputs a discharge flow command to a regulator for an open circuit pump; an assist valve control unit that continues output of the previous close command to an assist valve; a stuck detection determination unit that compares a pressure signal and a preset threshold value, determines that the excess flow control valve is stuck open if the pressure signal is less than the threshold value, and determines that the excess flow control valve is normal if the pressure signal exceeds the threshold value; and a stop signal generation unit to which a stuck determination signal is</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>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBBz9vcLDgkKdQ7x9PdT8HV09vD0cw2K5GFgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8c5-hgYW5uaW5pYGjsbEqAEA02EfiA</recordid><startdate>20181109</startdate><enddate>20181109</enddate><creator>TAKAHASHI HIROMASA</creator><creator>SHIMIZU JURI</creator><creator>HIRAKU KENJI</creator><creator>SUGIKI SHOUHEI</creator><creator>SAITOH TEPPEI</creator><scope>EVB</scope></search><sort><creationdate>20181109</creationdate><title>CONSTRUCTION MACHINERY</title><author>TAKAHASHI HIROMASA ; SHIMIZU JURI ; HIRAKU KENJI ; SUGIKI SHOUHEI ; SAITOH TEPPEI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN108779790A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2018</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>TAKAHASHI HIROMASA</creatorcontrib><creatorcontrib>SHIMIZU JURI</creatorcontrib><creatorcontrib>HIRAKU KENJI</creatorcontrib><creatorcontrib>SUGIKI SHOUHEI</creatorcontrib><creatorcontrib>SAITOH TEPPEI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TAKAHASHI HIROMASA</au><au>SHIMIZU JURI</au><au>HIRAKU KENJI</au><au>SUGIKI SHOUHEI</au><au>SAITOH TEPPEI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>CONSTRUCTION MACHINERY</title><date>2018-11-09</date><risdate>2018</risdate><abstract>Provided is construction machinery that can detect in real time during work that an excess flow control valve is stuck open without decreasing the speed of work. 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| language | chi ; eng |
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| 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 | CONSTRUCTION MACHINERY |
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