JPS5213244A - Retractile hydraulic boom for portable crane - Google Patents

Retractile hydraulic boom for portable crane

Info

Publication number
JPS5213244A
JPS5213244A JP8851875A JP8851875A JPS5213244A JP S5213244 A JPS5213244 A JP S5213244A JP 8851875 A JP8851875 A JP 8851875A JP 8851875 A JP8851875 A JP 8851875A JP S5213244 A JPS5213244 A JP S5213244A
Authority
JP
Japan
Prior art keywords
retractile
hydraulic boom
portable crane
boom
suspended
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
JP8851875A
Other languages
Japanese (ja)
Other versions
JPS5818313B2 (en
Inventor
Masatoshi Shinohara
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.)
Tadano Ltd
Original Assignee
Tadano Iron Works 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 Tadano Iron Works Co Ltd filed Critical Tadano Iron Works Co Ltd
Priority to JP50088518A priority Critical patent/JPS5818313B2/en
Publication of JPS5213244A publication Critical patent/JPS5213244A/en
Publication of JPS5818313B2 publication Critical patent/JPS5818313B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the weight of a cylinder by means of the arrangement such that the axial line of a retractile boom has an arc directing downward when no deflection is caused in the boom due to a suspended load, and the buckle resistance of a piston rod is maximum when the load is suspended.
COPYRIGHT: (C)1977,JPO&Japio
JP50088518A 1975-07-18 1975-07-18 The new crane boom Expired JPS5818313B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50088518A JPS5818313B2 (en) 1975-07-18 1975-07-18 The new crane boom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50088518A JPS5818313B2 (en) 1975-07-18 1975-07-18 The new crane boom

Publications (2)

Publication Number Publication Date
JPS5213244A true JPS5213244A (en) 1977-02-01
JPS5818313B2 JPS5818313B2 (en) 1983-04-12

Family

ID=13945039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50088518A Expired JPS5818313B2 (en) 1975-07-18 1975-07-18 The new crane boom

Country Status (1)

Country Link
JP (1) JPS5818313B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62118409U (en) * 1986-01-20 1987-07-28

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4852269U (en) * 1971-10-18 1973-07-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4852269U (en) * 1971-10-18 1973-07-06

Also Published As

Publication number Publication date
JPS5818313B2 (en) 1983-04-12

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