JPS57106909A - Pressure compensating valve - Google Patents

Pressure compensating valve

Info

Publication number
JPS57106909A
JPS57106909A JP18322180A JP18322180A JPS57106909A JP S57106909 A JPS57106909 A JP S57106909A JP 18322180 A JP18322180 A JP 18322180A JP 18322180 A JP18322180 A JP 18322180A JP S57106909 A JPS57106909 A JP S57106909A
Authority
JP
Japan
Prior art keywords
room
pressure
sensor pin
spring
pressure room
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP18322180A
Other languages
Japanese (ja)
Other versions
JPS6262366B2 (en
Inventor
Seiji Taguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Daikin Kogyo Co Ltd
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 Daikin Industries Ltd, Daikin Kogyo Co Ltd filed Critical Daikin Industries Ltd
Priority to JP18322180A priority Critical patent/JPS57106909A/en
Publication of JPS57106909A publication Critical patent/JPS57106909A/en
Publication of JPS6262366B2 publication Critical patent/JPS6262366B2/ja
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Flow Control (AREA)

Abstract

PURPOSE: To achieve high-precision pressure compensation by connecting a primary port to a pressure room while fitting a sensor pin in a diaphragm between the pressure room and a spring room so that it can slide freely, and then pressing a spool with the sensor pin.
CONSTITUTION: A pressure room 43 is provided adjoining to a spring room 16 connected behind a throttle 2, a sensor pin 42 is fitted in a diaphragm 45 between this pressure room 43 and a spring room 16 so that it can slide freely, and a primary port 26 is connected to the pressure room 43. Then, the sensor pin 42 is pressed toward a spool 14 with compensating force determined by a pressure difference between the pressure room 43 and spring room 16 so that this compensating force and axial thrust cancel to each other. Therefore, the influence of the thrust is eliminated or reduced to perform high-precision pressure compensation.
COPYRIGHT: (C)1982,JPO&Japio
JP18322180A 1980-12-23 1980-12-23 Pressure compensating valve Granted JPS57106909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18322180A JPS57106909A (en) 1980-12-23 1980-12-23 Pressure compensating valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18322180A JPS57106909A (en) 1980-12-23 1980-12-23 Pressure compensating valve

Publications (2)

Publication Number Publication Date
JPS57106909A true JPS57106909A (en) 1982-07-03
JPS6262366B2 JPS6262366B2 (en) 1987-12-25

Family

ID=16131901

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18322180A Granted JPS57106909A (en) 1980-12-23 1980-12-23 Pressure compensating valve

Country Status (1)

Country Link
JP (1) JPS57106909A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008291A1 (en) * 1988-02-29 1989-09-08 Kabushiki Kaisha Komatsu Seisakusho Flow control valve
WO2000032942A1 (en) * 1998-12-03 2000-06-08 Hitachi Construction Machinery Co., Ltd. Hydraulic driving unit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6355658A (en) * 1986-08-27 1988-03-10 Yoshitaka Nakanishi Card electronic calculator provided with seal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008291A1 (en) * 1988-02-29 1989-09-08 Kabushiki Kaisha Komatsu Seisakusho Flow control valve
US4984603A (en) * 1988-02-29 1991-01-15 Kabushiki Kaisha Komatsu Seisakusho Flow control valve assembly
WO2000032942A1 (en) * 1998-12-03 2000-06-08 Hitachi Construction Machinery Co., Ltd. Hydraulic driving unit
US6397591B1 (en) 1998-12-03 2002-06-04 Hitachi Construction Machinery Co., Ltd. Hydraulic driving unit

Also Published As

Publication number Publication date
JPS6262366B2 (en) 1987-12-25

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