JPS57120701A - Oil-hydraulic circuit for running - Google Patents

Oil-hydraulic circuit for running

Info

Publication number
JPS57120701A
JPS57120701A JP56006818A JP681881A JPS57120701A JP S57120701 A JPS57120701 A JP S57120701A JP 56006818 A JP56006818 A JP 56006818A JP 681881 A JP681881 A JP 681881A JP S57120701 A JPS57120701 A JP S57120701A
Authority
JP
Japan
Prior art keywords
motor
high pressure
sudden
valve
pass
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.)
Pending
Application number
JP56006818A
Other languages
Japanese (ja)
Inventor
Takahiro Kobayashi
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP56006818A priority Critical patent/JPS57120701A/en
Publication of JPS57120701A publication Critical patent/JPS57120701A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE:To prevent a motor from generating cavitation by a method wherein by pass valves are provided between the motor and a counterbalance valve and one of the by pass valves is closed by the pressure at the high pressure side of a main circuit arranged between a directional control valve and the counterbalance valve. CONSTITUTION:Even if the motor 5 runs over and consequent high pressure is generated at the outlet side of the motor 5 at the sudden lowering of rotational frequency of an engine 1 and in addition the closing of the counterbalance valve 4 occurs, the oil discharged from the motor 5 flows through either one of the by pass valves 6 and 7 directly in the inlet side of the motor 5, resulting in avoiding to generate sudden high pressure at the outlet side of the motor 5 and sudden cavitation at the inlet side of the motor 5. Furthermore, the passing resistance of the by pass valve 6 or 7 serves as the braking force against the motor 5.
JP56006818A 1981-01-19 1981-01-19 Oil-hydraulic circuit for running Pending JPS57120701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56006818A JPS57120701A (en) 1981-01-19 1981-01-19 Oil-hydraulic circuit for running

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56006818A JPS57120701A (en) 1981-01-19 1981-01-19 Oil-hydraulic circuit for running

Publications (1)

Publication Number Publication Date
JPS57120701A true JPS57120701A (en) 1982-07-27

Family

ID=11648783

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56006818A Pending JPS57120701A (en) 1981-01-19 1981-01-19 Oil-hydraulic circuit for running

Country Status (1)

Country Link
JP (1) JPS57120701A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513223B1 (en) * 1971-01-18 1980-04-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513223B1 (en) * 1971-01-18 1980-04-07

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