JPS5597501A - Oil-hydraulic drive device - Google Patents

Oil-hydraulic drive device

Info

Publication number
JPS5597501A
JPS5597501A JP523079A JP523079A JPS5597501A JP S5597501 A JPS5597501 A JP S5597501A JP 523079 A JP523079 A JP 523079A JP 523079 A JP523079 A JP 523079A JP S5597501 A JPS5597501 A JP S5597501A
Authority
JP
Japan
Prior art keywords
valve
approx
shut
oil
100mmsec
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
JP523079A
Other languages
Japanese (ja)
Inventor
Tsutomu Sugimoto
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.)
Yanmar Co Ltd
Original Assignee
Yanmar Agricultural Equipment 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 Yanmar Agricultural Equipment Co Ltd filed Critical Yanmar Agricultural Equipment Co Ltd
Priority to JP523079A priority Critical patent/JPS5597501A/en
Publication of JPS5597501A publication Critical patent/JPS5597501A/en
Pending legal-status Critical Current

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  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To obtain a cheap oil-hydraulic drive device with high efficiency and secure performance by making the drive operation with variable rate-of-flow through the chopping action of a shut-off valve provided at a fixed discharge pump.
CONSTITUTION: Between a fixed discharge pump P and an oil pressure motor M, a shut-off valve of high accuracy 8 having such a short response characteristic as 10W40mmsec, is provided. By the on and off of this shut-off valve 8 with a quick pulse to change thereby the timing of said on and off with a speed change lever 1, the rate of flow of the oil is regulated. Even though the pulse generating interval is unchanged, i.e. 100mmsec approx., the period of time when the shut-off valve 8 is held open is so long as approx. 70mmsec in the case of low discharging and so short as approx. 20mmsec in the case of high discharging. During full discharge, the valve is full-closed for the whole interval, 100mmsec approx.
COPYRIGHT: (C)1980,JPO&Japio
JP523079A 1979-01-20 1979-01-20 Oil-hydraulic drive device Pending JPS5597501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP523079A JPS5597501A (en) 1979-01-20 1979-01-20 Oil-hydraulic drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP523079A JPS5597501A (en) 1979-01-20 1979-01-20 Oil-hydraulic drive device

Publications (1)

Publication Number Publication Date
JPS5597501A true JPS5597501A (en) 1980-07-24

Family

ID=11605379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP523079A Pending JPS5597501A (en) 1979-01-20 1979-01-20 Oil-hydraulic drive device

Country Status (1)

Country Link
JP (1) JPS5597501A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60241505A (en) * 1984-05-15 1985-11-30 Daifuku Co Ltd Drive unit utilizing pneumatically operated actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60241505A (en) * 1984-05-15 1985-11-30 Daifuku Co Ltd Drive unit utilizing pneumatically operated actuator

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