JPS5565620A - Rack drive pinion type jack - Google Patents

Rack drive pinion type jack

Info

Publication number
JPS5565620A
JPS5565620A JP13828178A JP13828178A JPS5565620A JP S5565620 A JPS5565620 A JP S5565620A JP 13828178 A JP13828178 A JP 13828178A JP 13828178 A JP13828178 A JP 13828178A JP S5565620 A JPS5565620 A JP S5565620A
Authority
JP
Japan
Prior art keywords
rack bar
rack
type jack
column
drive pinion
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
JP13828178A
Other languages
Japanese (ja)
Inventor
Nobuo Nagatomi
Katsuya Miyamori
Mamoru Aizawa
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.)
IHI Corp
Original Assignee
Ishikawajima Harima Heavy Industries 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 Ishikawajima Harima Heavy Industries Co Ltd filed Critical Ishikawajima Harima Heavy Industries Co Ltd
Priority to JP13828178A priority Critical patent/JPS5565620A/en
Publication of JPS5565620A publication Critical patent/JPS5565620A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
    • E02B17/0818—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with racks actuated by pinions

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)

Abstract

PURPOSE: To reduce the size and weight of a rack drive pinion type jack by exactly engaging a rack with a pinion and employing a simple truss leg column construction.
CONSTITUTION: A gear train is provided on one end surface of a thick plate and a flat rack bar 7 is mounted on the other surface perpendicularly with respect to the center of a truss leg 1 to thereby form a column 3. A slide 13 making slidably contact with the other surface of a rack bar 7 is integrally mounted at the frame 16 of a unit 10. The rack bar 7 is supported by the guide 13, and elevationally driven up and down by driving the pinion 12. The column 3 is constructed by welding the end of plate material of circular shape in cross section to the rack bar 7.
COPYRIGHT: (C)1980,JPO&Japio
JP13828178A 1978-11-09 1978-11-09 Rack drive pinion type jack Pending JPS5565620A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13828178A JPS5565620A (en) 1978-11-09 1978-11-09 Rack drive pinion type jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13828178A JPS5565620A (en) 1978-11-09 1978-11-09 Rack drive pinion type jack

Publications (1)

Publication Number Publication Date
JPS5565620A true JPS5565620A (en) 1980-05-17

Family

ID=15218229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13828178A Pending JPS5565620A (en) 1978-11-09 1978-11-09 Rack drive pinion type jack

Country Status (1)

Country Link
JP (1) JPS5565620A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59160633U (en) * 1983-04-12 1984-10-27 三井造船株式会社 Lifting device for offshore platform
US4574650A (en) * 1980-11-10 1986-03-11 Engrenages Et Reducteurs Force limiting gear reducer for lifting pinion of self-elevating platform

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574650A (en) * 1980-11-10 1986-03-11 Engrenages Et Reducteurs Force limiting gear reducer for lifting pinion of self-elevating platform
JPS59160633U (en) * 1983-04-12 1984-10-27 三井造船株式会社 Lifting device for offshore platform

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