JPS57133940A - Control of horse power of construction vehicle - Google Patents

Control of horse power of construction vehicle

Info

Publication number
JPS57133940A
JPS57133940A JP1857581A JP1857581A JPS57133940A JP S57133940 A JPS57133940 A JP S57133940A JP 1857581 A JP1857581 A JP 1857581A JP 1857581 A JP1857581 A JP 1857581A JP S57133940 A JPS57133940 A JP S57133940A
Authority
JP
Japan
Prior art keywords
horse power
pumps
pressure
turning
liquid
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
JP1857581A
Other languages
Japanese (ja)
Other versions
JPS6331617B2 (en
Inventor
Hitoshi Kitayama
Michio Suzuki
Yoshihiko Kitadate
Gunji Mamiya
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.)
IHI Corp
Kato Heavy Industries Construction Machinery Co Ltd
Original Assignee
IHI Corp
Ishikawajima Construction Machinery 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 IHI Corp, Ishikawajima Construction Machinery Co Ltd filed Critical IHI Corp
Priority to JP1857581A priority Critical patent/JPS57133940A/en
Publication of JPS57133940A publication Critical patent/JPS57133940A/en
Publication of JPS6331617B2 publication Critical patent/JPS6331617B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure

Abstract

PURPOSE:To effectively utilize the horse power of a construction vehicle by a method in which each horse power of three liquid-pressure pumps is changed with time, a small horse power is supplied to a turning pump and its horse power is increased with time at the beginning of turning, and a horse power opposite to the foregoing case is supplied to two other pumps. CONSTITUTION:In an oil-pressure circuit system consisting of a prime mover and three pumps, a liquid-pressure motor 13 for turning is driven by a stationary capacity pump 2, and the other working machine is driven by other variable capacity pumps 3 and 4. Pilot pressures 16 and 15 are taken out of the discharge side circuit 12 and the charging side circuit 11 of the oil-pressure motor 13 of a turning circuit, a switch valve 8 in the discharge side pipeline is switched, a back pressure 29 proportional to the rotation speed of a rotator and the driving pressure 27 of the rotator are introduced from a tank line 7 to a regulator valve 21, the outputs of two variable pumps 3 and 4 are changed, and the input horse power of three liquid-pressure pumps is controlled in such a way as to keep its total horse power constant.
JP1857581A 1981-02-10 1981-02-10 Control of horse power of construction vehicle Granted JPS57133940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1857581A JPS57133940A (en) 1981-02-10 1981-02-10 Control of horse power of construction vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1857581A JPS57133940A (en) 1981-02-10 1981-02-10 Control of horse power of construction vehicle

Publications (2)

Publication Number Publication Date
JPS57133940A true JPS57133940A (en) 1982-08-18
JPS6331617B2 JPS6331617B2 (en) 1988-06-24

Family

ID=11975411

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1857581A Granted JPS57133940A (en) 1981-02-10 1981-02-10 Control of horse power of construction vehicle

Country Status (1)

Country Link
JP (1) JPS57133940A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996701A (en) * 1997-12-19 1999-12-07 Komatsu Ltd. Control method and system for construction machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996701A (en) * 1997-12-19 1999-12-07 Komatsu Ltd. Control method and system for construction machine

Also Published As

Publication number Publication date
JPS6331617B2 (en) 1988-06-24

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