JPS57103911A - Controlling device for driving cylinder - Google Patents

Controlling device for driving cylinder

Info

Publication number
JPS57103911A
JPS57103911A JP18064980A JP18064980A JPS57103911A JP S57103911 A JPS57103911 A JP S57103911A JP 18064980 A JP18064980 A JP 18064980A JP 18064980 A JP18064980 A JP 18064980A JP S57103911 A JPS57103911 A JP S57103911A
Authority
JP
Japan
Prior art keywords
apertures
cylinder
valve
tube
control valve
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
JP18064980A
Other languages
Japanese (ja)
Inventor
Makoto Okada
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP18064980A priority Critical patent/JPS57103911A/en
Publication of JPS57103911A publication Critical patent/JPS57103911A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To make the safety valve considered essential heretofor unnecessary and simplifyh a constitution by a method wherein a control valve and a cylinder are rationally incorporated in a system that the cylinder is driven and controlled through a control valve which is well suitable to a gear shifting of the agricultural tractor.
CONSTITUTION: A cylinder 2 divides the interior of tube 3 into two chambers 4, 5 with a piston 6 freely and contactingly inserted in the cylinder tube 3 and makes it connect with each chamber 4, 5 to form drive apertures 7, 8 and escaping apertures 9, 10 in the tube 3. On the other hand, a control valve 1 forms supply apertures 16, 17 connecting with the above described drive apertures 7, 8, relay apertures 19, 20 connecting with the escaping apertures 9, 10 and a pressure source aperture 21 connecting with the high pressure fluid source P on its own body 14, and inserts a valve 15 operated by a gear shifting 27 in its inner part. Apertures 16, 19 are connected with a drain aperture 18, e.g. in the first site of the valve 15, and apertures 17, 21 are connected between themselves to be composed so that the aperture 20 may be closed.
COPYRIGHT: (C)1982,JPO&Japio
JP18064980A 1980-12-19 1980-12-19 Controlling device for driving cylinder Pending JPS57103911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18064980A JPS57103911A (en) 1980-12-19 1980-12-19 Controlling device for driving cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18064980A JPS57103911A (en) 1980-12-19 1980-12-19 Controlling device for driving cylinder

Publications (1)

Publication Number Publication Date
JPS57103911A true JPS57103911A (en) 1982-06-28

Family

ID=16086878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18064980A Pending JPS57103911A (en) 1980-12-19 1980-12-19 Controlling device for driving cylinder

Country Status (1)

Country Link
JP (1) JPS57103911A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471938A (en) * 1982-11-01 1984-09-18 United Technologies Corporation Modulating poppet valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471938A (en) * 1982-11-01 1984-09-18 United Technologies Corporation Modulating poppet valve

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