GB999628A - Improvements in or relating to jacks - Google Patents

Improvements in or relating to jacks

Info

Publication number
GB999628A
GB999628A GB4489161A GB4489161A GB999628A GB 999628 A GB999628 A GB 999628A GB 4489161 A GB4489161 A GB 4489161A GB 4489161 A GB4489161 A GB 4489161A GB 999628 A GB999628 A GB 999628A
Authority
GB
United Kingdom
Prior art keywords
jacks
nut
post
load
beams
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.)
Expired
Application number
GB4489161A
Inventor
Frederick Donald Green
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.)
TRUSCON Ltd
Original Assignee
TRUSCON 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 TRUSCON Ltd filed Critical TRUSCON Ltd
Priority to GB4489161A priority Critical patent/GB999628A/en
Publication of GB999628A publication Critical patent/GB999628A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
    • E04B1/3511—Lift-slab; characterised by a purely vertical lifting of floors or roofs or parts thereof
    • 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
    • E02B17/0836—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks
    • E02B17/0881—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks with following nuts

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

999,628. Jacks. TRUSCON Ltd. Dec. 11, 1962 [Dec. 14, 1961], No. 44891/61. Heading B8J. A jacking unit comprises a lifting post 10 formed with an external screw thread, two beams 11,12 with apertures 13,14 through which the lifting post 10 extends freely, two hydraulic jacks 17, 18 operatively connected between the beams 11, 12, two internally-threaded nuts 15, 16 engaged on the thread of the lifting beam 10, one against each beam and an electric motor (not shown) for rotating each of the nuts. The load, consisting of the preformed roof and floor of a building is secured to bolts 19 by nuts 20 which hold the load firmly against extensions 25 of the upper beam 11. Nut 16 is screwed up to beam 12 and the beam 11 raised by the jacks 17, 18, the nut 15 being rotated to follow the beam 11 so that on failure of the jacks the load is supported. Electrical circuits (not shown) ensure that the jacks can operate only when each nut 15, 16 is in contact with its associated beam 11, 12. After the jacks 17, 18 have completed their stroke the lower beam 12 is raised by driving the nut 16, thus retracting the jacks. The lifting post 10 may be raised by securing the load and rotating nut 16 in reverse so that it engages a plate 27 and then continuing the drive to screw the lifting post 10 upwardly, rotation of the post 10 being prevented by projections (not shown) on the beams 11, 12 engaging grooves 28 cut along the post 10 in diametrically-opposed positions.
GB4489161A 1961-12-14 1961-12-14 Improvements in or relating to jacks Expired GB999628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4489161A GB999628A (en) 1961-12-14 1961-12-14 Improvements in or relating to jacks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4489161A GB999628A (en) 1961-12-14 1961-12-14 Improvements in or relating to jacks

Publications (1)

Publication Number Publication Date
GB999628A true GB999628A (en) 1965-07-28

Family

ID=10435145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4489161A Expired GB999628A (en) 1961-12-14 1961-12-14 Improvements in or relating to jacks

Country Status (1)

Country Link
GB (1) GB999628A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387424A1 (en) * 1988-03-01 1990-09-19 Klaauw, Petrus Martinus van der System for synchronized lifting of heavy building elements
CN109898666A (en) * 2019-04-26 2019-06-18 郑州航空工业管理学院 A kind of damping steel structural upright column
CN113026566A (en) * 2021-03-23 2021-06-25 中铁一局集团第二工程有限公司 Reverse hoisting system and method for dismantling Bailey beam support

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387424A1 (en) * 1988-03-01 1990-09-19 Klaauw, Petrus Martinus van der System for synchronized lifting of heavy building elements
CN109898666A (en) * 2019-04-26 2019-06-18 郑州航空工业管理学院 A kind of damping steel structural upright column
CN113026566A (en) * 2021-03-23 2021-06-25 中铁一局集团第二工程有限公司 Reverse hoisting system and method for dismantling Bailey beam support

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