TW200642944A - An improved head frame - Google Patents

An improved head frame

Info

Publication number
TW200642944A
TW200642944A TW095103511A TW95103511A TW200642944A TW 200642944 A TW200642944 A TW 200642944A TW 095103511 A TW095103511 A TW 095103511A TW 95103511 A TW95103511 A TW 95103511A TW 200642944 A TW200642944 A TW 200642944A
Authority
TW
Taiwan
Prior art keywords
frame
pivotally mounted
upper horizontal
fixed frame
fixed
Prior art date
Application number
TW095103511A
Other languages
Chinese (zh)
Inventor
Ghee-Hua Ng
Zhan-Min Tong
Jin-Bei Tang
Robert Arthur Mills
Original Assignee
Nsl Engineering Pte 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 Nsl Engineering Pte Ltd filed Critical Nsl Engineering Pte Ltd
Publication of TW200642944A publication Critical patent/TW200642944A/en

Links

Landscapes

  • Load-Engaging Elements For Cranes (AREA)

Abstract

A hoist frame (150) for engaging a pair of spreaders in an expanded position and a single spreader in a retracted position comprising, a first and second head frame (65a,b), each for engaging a lifting device; a rigid first frame (160a) fixed to the first head frame and a rigid second frame (160b) fixed to the second head frame; a plurality of assemblies (155a,b) pivotably mounted to each fixed frame so as to be intermediate the head frames, wherein, each assembly comprises an upper horizontal member (175), a first inclined outer member (165) pivotally mounted to the first fixed frame and pivotally mounted to a first end of the upper horizontal member, a second inclined outer member (185) pivotally mounted to the second fixed frame and pivotally mounted to a second end of the upper horizontal member, a first inclined inner member (170a) pivotally mounted to the first fixed frame and pivotally mounted to a mid-point of the upper horizontal member so as to be parallel to the first outer inclined member in a first position of the hoist frame and a second inclined inner member (180) pivotally mounted to the second fixed frame and pivotally mounted to a mid-point of the upper horizontal member so as to be parallel to the second outer inclined member in a first position of the hoist frame, such that the first members and the first fixed frame define a first parallelogram (217), and the second members and the second fixed frame define a second parallelogram (216).
TW095103511A 2005-02-02 2006-01-27 An improved head frame TW200642944A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SG2005000670 2005-02-02

Publications (1)

Publication Number Publication Date
TW200642944A true TW200642944A (en) 2006-12-16

Family

ID=57810082

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095103511A TW200642944A (en) 2005-02-02 2006-01-27 An improved head frame

Country Status (1)

Country Link
TW (1) TW200642944A (en)

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