IT1248513B - Valvola di selezione della direzione, con funzione di rilevamento del carico - Google Patents

Valvola di selezione della direzione, con funzione di rilevamento del carico

Info

Publication number
IT1248513B
IT1248513B ITMI911701A IT1248513B IT 1248513 B IT1248513 B IT 1248513B IT MI911701 A ITMI911701 A IT MI911701A IT 1248513 B IT1248513 B IT 1248513B
Authority
IT
Italy
Prior art keywords
direction selection
selection valve
detection function
load detection
pressure
Prior art date
Application number
Other languages
English (en)
Inventor
Rindo Morikawa
Kiyoshi Oyama
Toichi Hirata
Yusuke Kajita
Genroku Sugiyama
Original Assignee
Zexel Corp
Hitachi Construction Machinery
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zexel Corp, Hitachi Construction Machinery filed Critical Zexel Corp
Publication of ITMI911701A1 publication Critical patent/ITMI911701A1/it
Application granted granted Critical
Publication of IT1248513B publication Critical patent/IT1248513B/it

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
    • F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/8667—Reciprocating valve
    • Y10T137/86694—Piston valve
    • Y10T137/86702—With internal flow passage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87177—With bypass
    • Y10T137/87185—Controlled by supply or exhaust valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Multiple-Way Valves (AREA)
  • Operation Control Of Excavators (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

La presente invenzione si riferisce ad una valvola di selezione della direzione e concerne, in modo più specifico, una valvola di selezione della direzione in grado di svolgere una funzione di rilevamento del carico. Questa valvola si caratterizza per una struttura relativamente semplice quantunque sia in grado di rispondere dolcemente alle pressioni del carico, mentre è possibile aumentare, in modo graduale, la pressione nella linea della pompa.
ITMI911701 1990-06-22 1991-06-20 Valvola di selezione della direzione, con funzione di rilevamento del carico IT1248513B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16277190 1990-06-22
JP15367991A JPH0768962B2 (ja) 1990-06-22 1991-05-30 ロードセンシング機能付き方向切換弁

Publications (2)

Publication Number Publication Date
ITMI911701A1 ITMI911701A1 (it) 1992-12-20
IT1248513B true IT1248513B (it) 1995-01-19

Family

ID=26482231

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI911701 IT1248513B (it) 1990-06-22 1991-06-20 Valvola di selezione della direzione, con funzione di rilevamento del carico

Country Status (3)

Country Link
US (1) US5161575A (it)
JP (1) JPH0768962B2 (it)
IT (1) IT1248513B (it)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3531758B2 (ja) * 1994-06-27 2004-05-31 株式会社小松製作所 圧力補償弁を備えた方向制御弁装置
DE19727881A1 (de) * 1997-06-30 1999-01-07 Rexroth Mannesmann Gmbh Hydraulisches Wegeventil mit Druckkompensation nach dem Mengenteilerprinzip
JP3655910B2 (ja) * 2003-03-31 2005-06-02 株式会社小松製作所 油圧駆動機械の制御装置
US6868672B2 (en) * 2003-05-13 2005-03-22 Sauer-Danfoss, Inc. Method of controlling a swinging boom and apparatus for controlling the same
US20040250859A1 (en) * 2003-06-12 2004-12-16 Poulin James M. Method for protecting a pneumatic control system from ingested contamination
FR2857704B1 (fr) * 2003-07-16 2007-12-28 Bosch Rexroth Dsi Sas Distributeur hydraulique a fentes de couple
US7243493B2 (en) * 2005-04-29 2007-07-17 Caterpillar Inc Valve gradually communicating a pressure signal
JP5602074B2 (ja) * 2011-03-16 2014-10-08 カヤバ工業株式会社 制御弁
JP5984575B2 (ja) * 2012-08-15 2016-09-06 Ｋｙｂ株式会社 切換弁
CN104088841B (zh) * 2014-06-26 2017-02-15 徐州徐工液压件有限公司 一种负载敏感液压系统及其负载敏感阀
CN108895050B (zh) * 2018-09-12 2020-10-09 徐州徐工液压件有限公司 一种新型负载敏感阀反馈油路的结构
CN112081789B (zh) * 2020-09-07 2024-02-02 徐州阿马凯液压技术有限公司 一种负载敏感高压大流量三位四通板式液控换向阀

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707988A (en) * 1971-09-24 1973-01-02 Commercial Shearing Control valves
JP2610282B2 (ja) * 1987-12-08 1997-05-14 株式会社東芝 波形データ記憶装置
JP2683244B2 (ja) * 1988-04-14 1997-11-26 株式会社ゼクセル 制御弁
JPH0786361B2 (ja) * 1988-11-10 1995-09-20 株式会社ゼクセル 油圧制御弁

Also Published As

Publication number Publication date
JPH04351384A (ja) 1992-12-07
ITMI911701A1 (it) 1992-12-20
JPH0768962B2 (ja) 1995-07-26
US5161575A (en) 1992-11-10

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970628