GB969540A - Improvements in or relating to lifting apparatus for use in building construction - Google Patents

Improvements in or relating to lifting apparatus for use in building construction

Info

Publication number
GB969540A
GB969540A GB4293461A GB4293461A GB969540A GB 969540 A GB969540 A GB 969540A GB 4293461 A GB4293461 A GB 4293461A GB 4293461 A GB4293461 A GB 4293461A GB 969540 A GB969540 A GB 969540A
Authority
GB
United Kingdom
Prior art keywords
head
cross
rods
secured
jaws
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
GB4293461A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB969540A publication Critical patent/GB969540A/en
Expired 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
    • E02B17/0836—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks
    • E02B17/0854—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks with clamping wedges, eccentric clamping devices and so on
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Earth Drilling (AREA)

Abstract

969,540. Lifting jacks. T. N. LJUNG. Nov. 30, 1961 [Dec. 2, 1960; Nov. 11, 1961], No. 42934/61. Heading B8J. During the construction of a building, floors are raised by a jacking system including a number of jacks, each of which comprises crossheads 3, 5 secured to the cylinder 2 and pistonrod 4 respectively of an hydraulic ram supported on a column 1 of the building, and a pair of rods 8 which support the floor 10 and which may both be supported alternately by the crossheads 3, 5. Each cross-head, Fig. 3, comprises a pair of jaws 11 which are movable between guide surfaces 15 and which are urged by a spring 24, engaged between one jaw and a yoke 19 secured to the other jaw, into engagement with the rod 8. Each rod 8 is formed with ribs, shaped as shown, and the gripping surface of each jaw is shaped correspondingly so that the cross-head can only move down with respect to the rod 8. To lower the rod 8 with respect to the cross-head, a cam 27 with a hand lever 25 is provided between yokes 20, 23 which are secured to the jaws so that on rotation of the cam about an axis 26 the jaws are moved apart against the action of spring 24. In operation, on extension of the ram 2, 4, the upper crosshead 5 is moved upwardly and raises the rods 8 which ratchet through the jaws of the lower cross-head 3. The rods are then supported on the lower cross-head and hydraulic fluid is exhausted from the cylinder 2 so that the upper cross-head 5 descends under the action of its own weight and springs 7 and the cycle is then repeated. In a modification, Figs. 4-6 (not shown), the rods 8 have a single helicoidal rib and gripper jaws are provided on the upper cross-head only. The lower cross-head is provided with rotatable nuts which engage the rods and which are rotated as the upper cross-head is raised by an endless chain and a chain wheel secured to the driven part of a free-wheel clutch on the lower cross-head. The driving part of the clutch is secured to a high-pitch screw which engages a nut secured to the upper cross-head. In operation, during upward movement of the upper cross-head, the nuts are turned on the rods. The free-wheel clutch may be reversed to allow the rods to be lowered. In a further modification (not shown), electric switches may be associated with the gripper jaws and incorporated in hydraulic or electric circuit for controlling the synchronization of a number of jacks.
GB4293461A 1960-12-02 1961-11-30 Improvements in or relating to lifting apparatus for use in building construction Expired GB969540A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1164660 1960-12-02
SE1123661 1961-11-11

Publications (1)

Publication Number Publication Date
GB969540A true GB969540A (en) 1964-09-09

Family

ID=26655821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4293461A Expired GB969540A (en) 1960-12-02 1961-11-30 Improvements in or relating to lifting apparatus for use in building construction

Country Status (2)

Country Link
GB (1) GB969540A (en)
NL (1) NL272071A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547291A1 (en) * 1983-06-10 1984-12-14 Epitoegepgyarto Vallalat Electrohydraulic hoist for pre-fabricated building panels
EP0387424A1 (en) * 1988-03-01 1990-09-19 Klaauw, Petrus Martinus van der System for synchronized lifting of heavy building elements

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547291A1 (en) * 1983-06-10 1984-12-14 Epitoegepgyarto Vallalat Electrohydraulic hoist for pre-fabricated building panels
EP0387424A1 (en) * 1988-03-01 1990-09-19 Klaauw, Petrus Martinus van der System for synchronized lifting of heavy building elements

Also Published As

Publication number Publication date
NL272071A (en)

Similar Documents

Publication Publication Date Title
CN104030032A (en) Auxiliary steel tube transferring device
CN204981004U (en) Push away ascending device of material
ES371357A1 (en) Surface apparatus for handling an elastic column
GB969540A (en) Improvements in or relating to lifting apparatus for use in building construction
CN203833221U (en) Auxiliary steel pipe transferring device
CN211042980U (en) Green high performance concrete's mechanics detection device
CN110817232A (en) Large-scale fragment of brick clamping device for building wall
KR101682634B1 (en) Apparatus for lifting upper structure of bridge using dual wedges
US2299845A (en) Combined toggle and hydraulic press
CN208883303U (en) A kind of big quality concrete pipe fitting lifting means
CN209080881U (en) Tobacoo carrying disk automatic blanking device
CN113503010B (en) A elevation structure for construction
GB990526A (en) An improved jack adapted to be mounted on and co-operate with a threaded rod in a load lifting apparatus
GB925650A (en) Lifting device
GB1112975A (en) Improvements in or relating to jack devices
CN213583290U (en) Continuous punching machine for producing porcelain insulator steel feet
CN215711104U (en) Steel billet grabbing device
CN211033916U (en) Gripper traveling mechanism of high-position robot stacking system
SU1206076A1 (en) Manipulator for dismantling the spring set of cargo car bogie
SU506687A1 (en) Vertical ship lift
SU148356A1 (en) Device for removing electrically insulating cylinders from mandrels
SU497168A2 (en) Thermal press
CN111999169A (en) Wooden bridge safety detection device
SU678012A1 (en) Automatic device for engaging and longitudinal displacement of crane track rail
GB1470038A (en) Device for raising the sliding shutterinf for producing continuous concrete walls