JPS5442757A - Truck crane - Google Patents

Truck crane

Info

Publication number
JPS5442757A
JPS5442757A JP10899377A JP10899377A JPS5442757A JP S5442757 A JPS5442757 A JP S5442757A JP 10899377 A JP10899377 A JP 10899377A JP 10899377 A JP10899377 A JP 10899377A JP S5442757 A JPS5442757 A JP S5442757A
Authority
JP
Japan
Prior art keywords
crane
boom
switch
closed
counterweight
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
JP10899377A
Other languages
Japanese (ja)
Inventor
Takao Senbo
Yoshiaki Takatani
Satoshi Rikuura
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 JP10899377A priority Critical patent/JPS5442757A/en
Publication of JPS5442757A publication Critical patent/JPS5442757A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control And Safety Of Cranes (AREA)

Abstract

PURPOSE: TO ensure safe operation of a truck crane, without immpairing performance of the same, by providing a switch which is closed when a counterweight is placed on the rear end of a crane supporting bed and thus disabling boom derricking motion of the crane when said switch is in its closed condition.
CONSTITUTION: Switch 18 is arranged on a housing bed such that it is closed or opened when a counterweight is attached to a retainer metal at the rear end of crane supporting bed. When weight 11 is placed on metal 12 while keeping outrigger 19 out of contact with the ground, alarm 30 is actuated immediately if crane is operated by mstake, since limit switches 20 are kept in their OFF-condition, or otherwise shut-off valve 29 is shifted to its "open" position, so that derricking motion of boom 6 is disabled by relief valve 27 when no load is acted to the boom 6
COPYRIGHT: (C)1979,JPO&Japio
JP10899377A 1977-09-09 1977-09-09 Truck crane Pending JPS5442757A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10899377A JPS5442757A (en) 1977-09-09 1977-09-09 Truck crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10899377A JPS5442757A (en) 1977-09-09 1977-09-09 Truck crane

Publications (1)

Publication Number Publication Date
JPS5442757A true JPS5442757A (en) 1979-04-04

Family

ID=14498857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10899377A Pending JPS5442757A (en) 1977-09-09 1977-09-09 Truck crane

Country Status (1)

Country Link
JP (1) JPS5442757A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853788U (en) * 1981-10-07 1983-04-12 株式会社日本省力産業研究所 Simple truck crane fall prevention device
JP2017088387A (en) * 2015-11-16 2017-05-25 株式会社タダノ Crane truck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853788U (en) * 1981-10-07 1983-04-12 株式会社日本省力産業研究所 Simple truck crane fall prevention device
JP2017088387A (en) * 2015-11-16 2017-05-25 株式会社タダノ Crane truck

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