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JPS5449752A - Overload preventive apparatus for material handling vehicle - Google Patents

Overload preventive apparatus for material handling vehicle

Info

Publication number
JPS5449752A
JPS5449752AJP11464877AJP11464877AJPS5449752AJP S5449752 AJPS5449752 AJP S5449752AJP 11464877 AJP11464877 AJP 11464877AJP 11464877 AJP11464877 AJP 11464877AJP S5449752 AJPS5449752 AJP S5449752A
Authority
JP
Japan
Prior art keywords
material handling
moment
overload
pressure
handling vehicle
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
JP11464877A
Other languages
Japanese (ja)
Other versions
JPS6137200B2 (en
Inventor
Takashi Nikaido
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.)
Komatsu Ltd
Komatsu Forklift KK
Original Assignee
Komatsu Ltd
Komatsu Forklift KK
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 Komatsu Ltd, Komatsu Forklift KKfiledCriticalKomatsu Ltd
Priority to JP11464877ApriorityCriticalpatent/JPS5449752A/en
Publication of JPS5449752ApublicationCriticalpatent/JPS5449752A/en
Publication of JPS6137200B2publicationCriticalpatent/JPS6137200B2/ja
Grantedlegal-statusCriticalCurrent

Links

Landscapes

Abstract

PURPOSE: To provide an overload preventive apparatus for material handling vehicle such as forklift truck which can prevent the overload from working on the body by making material handling unable to perform when it works beyond any allowable load condition.
CONSTITUTION: When an article A is placed on a fork craw 4 as shown by the drawing, a front moment M comprising the load W of the article and a distance L to the center 3' of a mast support 3 from the load center G works on the body 1 while a retaining pressure P1 corresponding to th moment develops in a chamber 5b of a tilt cylinder 5. The pressure P1 moves into a pressure chamber 14 from a conduit 19 to push a piston 13 against a spring 15. When the moment M is larger than the allowable value, the piston 13 is further moved against the spring, causing the first and second fixed contact pieces 17 and 18 to be shortcircuited. Then, a solenoid directinal control valve 7 is switched to a drain position d leaving a tilt control valve 8 unable to operate
COPYRIGHT: (C)1979,JPO&Japio
JP11464877A1977-09-261977-09-26Overload preventive apparatus for material handling vehicleGrantedJPS5449752A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP11464877AJPS5449752A (en)1977-09-261977-09-26Overload preventive apparatus for material handling vehicle

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP11464877AJPS5449752A (en)1977-09-261977-09-26Overload preventive apparatus for material handling vehicle

Publications (2)

Publication NumberPublication Date
JPS5449752Atrue JPS5449752A (en)1979-04-19
JPS6137200B2 JPS6137200B2 (en)1986-08-22

Family

ID=14643056

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP11464877AGrantedJPS5449752A (en)1977-09-261977-09-26Overload preventive apparatus for material handling vehicle

Country Status (1)

CountryLink
JP (1)JPS5449752A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS57131700A (en)*1981-02-091982-08-14Toyoda Automatic Loom WorksMethod and device for displaying load of forklift truck
JPS57131699A (en)*1981-02-041982-08-14Toyoda Automatic Loom WorksMethod and device for displaying load of forklift truck
DE3203553A1 (en)*1981-02-041982-10-28Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, Aichi METHOD AND DEVICE FOR DISPLAYING THE CHARGING STATE FOR A FORKLIFT
JPS62111897A (en)*1985-11-051987-05-22西尾レントオ−ル株式会社Elevator
JP2023037249A (en)*2021-09-032023-03-15三菱ロジスネクスト株式会社Forklift having spreader breakage prevention function

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS626486A (en)*1985-07-011987-01-13Nec CorpSemiconductor memory device

Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS4316344Y1 (en)*1965-07-231968-07-08
JPS5139856A (en)*1974-09-301976-04-03Komatsu Mfg Co LtdFuookurifuto no fuookuseigyosochi

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS4316344Y1 (en)*1965-07-231968-07-08
JPS5139856A (en)*1974-09-301976-04-03Komatsu Mfg Co LtdFuookurifuto no fuookuseigyosochi

Cited By (5)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS57131699A (en)*1981-02-041982-08-14Toyoda Automatic Loom WorksMethod and device for displaying load of forklift truck
DE3203553A1 (en)*1981-02-041982-10-28Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, Aichi METHOD AND DEVICE FOR DISPLAYING THE CHARGING STATE FOR A FORKLIFT
JPS57131700A (en)*1981-02-091982-08-14Toyoda Automatic Loom WorksMethod and device for displaying load of forklift truck
JPS62111897A (en)*1985-11-051987-05-22西尾レントオ−ル株式会社Elevator
JP2023037249A (en)*2021-09-032023-03-15三菱ロジスネクスト株式会社Forklift having spreader breakage prevention function

Also Published As

Publication numberPublication date
JPS6137200B2 (en)1986-08-22

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