JP2010037017A5 - - Google Patents

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Publication number
JP2010037017A5
JP2010037017A5 JP2008199385A JP2008199385A JP2010037017A5 JP 2010037017 A5 JP2010037017 A5 JP 2010037017A5 JP 2008199385 A JP2008199385 A JP 2008199385A JP 2008199385 A JP2008199385 A JP 2008199385A JP 2010037017 A5 JP2010037017 A5 JP 2010037017A5
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JP
Japan
Prior art keywords
shift cylinder
chamber
diameter
cylinder
small
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
JP2008199385A
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Japanese (ja)
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JP2010037017A (en
JP5238397B2 (en
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Publication date
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Priority to JP2008199385A priority Critical patent/JP5238397B2/en
Priority claimed from JP2008199385A external-priority patent/JP5238397B2/en
Publication of JP2010037017A publication Critical patent/JP2010037017A/en
Publication of JP2010037017A5 publication Critical patent/JP2010037017A5/ja
Application granted granted Critical
Publication of JP5238397B2 publication Critical patent/JP5238397B2/en
Active legal-status Critical Current
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Claims (3)

昇降可能なキャリッジと、キャリッジに横動可能に設けられた左右のフォークと、一方のフォークを横動すベく設けられた大径シフトシリンダと、他方のフォークを横動すべく設けられてテール室側受圧面積が大径シフトシリンダのロッド室側受圧面積と等しくされた小径シフトシリンダと、小径シフトシリンダの作動を補うべく設けられて大径シフトシリンダのテール室側受圧面積と小径シフトシリンダのロッド室側受圧面積との差分に相当する受圧面積のシリンダ室を備えた差分シフトシリンダと、大径シフトシリンダのテール室と制御弁の二次側とを接続する大径シフトシリンダ給排管と、小径シフトシリンダのロッド室と制御弁の二次側とを接続する小径シフトシリンダ給排管と、大径シフトシリンダのロッド室と小径シフトシリンダのテール室とを接続する連通管と、小径のシフトシリンダのロッド室と差分シフトシリンダのシリンダ室とを接続する導通管と、から構成した事を特徴とするフォークシフト装置。   Carriage that can be raised and lowered, left and right forks provided on the carriage so as to be laterally movable, a large-diameter shift cylinder that is provided to horizontally move one fork, and a tail provided to horizontally move the other fork A small-diameter shift cylinder whose chamber-side pressure-receiving area is made equal to the rod-chamber-side pressure-receiving area of the large-diameter shift cylinder, and the tail-chamber-side pressure-receiving area of the large-diameter shift cylinder and the small-diameter shift cylinder A differential shift cylinder having a cylinder chamber having a pressure receiving area corresponding to the difference from the rod chamber side pressure receiving area, and a large diameter shift cylinder supply / exhaust pipe connecting the tail chamber of the large diameter shift cylinder and the secondary side of the control valve; A small-diameter shift cylinder supply / exhaust pipe connecting the rod chamber of the small-diameter shift cylinder and the secondary side of the control valve, and the rod chamber and small-diameter shift cylinder of the large-diameter shift cylinder Fork shift device for a communication pipe which connects the tail chamber, a conduit for connecting the rod chamber and the cylinder chamber of the differential shift cylinder of small diameter shift cylinder, characterized in that consisted. 差分シフトシリンダは、他方のフォークを中心として小径シフトシリンダとは左右対称状に設けられていると共に、ラムシリンダにしてある請求項１に記載のフォークシフト装置。   The fork shift device according to claim 1, wherein the differential shift cylinder is provided in a bilaterally symmetrical manner with respect to the small-diameter shift cylinder with the other fork as a center, and is a ram cylinder. 大径シフトシリンダ給排管と小径シフトシリンダ給排管の少なくとも何れか一方と連通管との間は、絞り弁を備えた連絡管に依り接続されている請求項１又は２に記載のフォークシフト装置。 The fork shift according to claim 1 or 2 , wherein at least one of the large-diameter shift cylinder supply / exhaust pipe and the small-diameter shift cylinder supply / exhaust pipe and the communication pipe are connected by a communication pipe having a throttle valve. apparatus.
JP2008199385A 2008-08-01 2008-08-01 Fork shift device Active JP5238397B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008199385A JP5238397B2 (en) 2008-08-01 2008-08-01 Fork shift device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008199385A JP5238397B2 (en) 2008-08-01 2008-08-01 Fork shift device

Publications (3)

Publication Number Publication Date
JP2010037017A JP2010037017A (en) 2010-02-18
JP2010037017A5 true JP2010037017A5 (en) 2011-04-07
JP5238397B2 JP5238397B2 (en) 2013-07-17

Family

ID=42009963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008199385A Active JP5238397B2 (en) 2008-08-01 2008-08-01 Fork shift device

Country Status (1)

Country Link
JP (1) JP5238397B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102795578A (en) * 2011-05-23 2012-11-28 杭州友高精密机械有限公司 Fork laterally-moving distance-adjusting device of fork truck

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990594A (en) * 1975-08-29 1976-11-09 Cascade Corporation Fluid-actuated clamping apparatus and circuit
JPS55120696U (en) * 1979-02-15 1980-08-27
JPS6234957Y2 (en) * 1979-12-29 1987-09-05
JP2565135Y2 (en) * 1993-06-30 1998-03-11 住友重機械工業株式会社 Tuning device for facing hydraulic press
JPH11182503A (en) * 1997-12-18 1999-07-06 Kyoei Process Kk Synchronously actuating mechanism of plural hydraulic cylinders
JPH11209092A (en) * 1998-01-29 1999-08-03 Nissan Motor Co Ltd Fork shift device for forklift
JP2002144943A (en) * 2000-11-14 2002-05-22 Shinmeiwa Auto Engineering Ltd Cylinder synchronous device of gate lifter

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