EP0287257A1 - Dispositif pour manipuler des treillis soudés pour béton armé - Google Patents

Dispositif pour manipuler des treillis soudés pour béton armé Download PDF

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Publication number
EP0287257A1
EP0287257A1 EP88302998A EP88302998A EP0287257A1 EP 0287257 A1 EP0287257 A1 EP 0287257A1 EP 88302998 A EP88302998 A EP 88302998A EP 88302998 A EP88302998 A EP 88302998A EP 0287257 A1 EP0287257 A1 EP 0287257A1
Authority
EP
European Patent Office
Prior art keywords
arms
gripper
frame
members
pair
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.)
Withdrawn
Application number
EP88302998A
Other languages
German (de)
English (en)
Inventor
Robert Dayson
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.)
HAWKSLEY ENGINEERING Ltd
Original Assignee
HAWKSLEY ENGINEERING 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 HAWKSLEY ENGINEERING Ltd filed Critical HAWKSLEY ENGINEERING Ltd
Publication of EP0287257A1 publication Critical patent/EP0287257A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/18—Load gripping or retaining means
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/169—Tools or apparatus specially adapted for working-up reinforcement mats

Definitions

  • Sheets of steel mesh for concrete reinforcement are often stored horizontally in stacks. They are notoriously difficult to handle, and the aim of this invention is to provide a device which makes this task much easier.
  • the present invention provides a device for handling sheets of steel mesh, comprising a frame provided with means for attachment to lifting apparatus, and a plurality of horizontally spaced downwardly directed gripper assemblies depending from the frame for gripping the mesh at spaced positions.
  • a device for handling sheets of steel mesh comprising a frame provided with means for attachment to lifting apparatus, and a plurality of horizontally spaced downwardly directed gripper assemblies depending from the frame for gripping the mesh at spaced positions.
  • the device comprises a pair of parallel spaced box-section beams 1, 2 joined to transverse cross beams 3, 4.
  • the ends of cross beams 3, 4 extend beyond the main beams 1, 2 and are joined by side members 5, 6 extending parallel to the beams 1, 2.
  • the ends 7, 8 of beams 1, 2 are open to receive the lifting forks of a fork lift truck.
  • a loop 9 is welded to cross beam 3 mid-way between the main beams 1, 2 for attachment to a safety chain by which the device can be anchored to the fork lift.
  • Four attachment points 10 are also provided on the side members 5, 6 adjacent to the cross beams 3, 4 for the attachment of lifting chains by which the device can be suspended from a crane or overhead gantry for example.
  • Each plate has a central outwardly projecting stub shaft 13 )
  • Fig. 2 and contains four tangential slots 14 symmetrically disposed about the shaft 13.
  • the gripper assemblies 12 are all substantially identical in structure and one of these will now be described with reference to Fig. 3.
  • Each gripper assembly comprises a housing 15 having a hydraulic cylinder 16 mounted in an upright position on its top wall.
  • This bar is axially slidable within a guide bush 19 which is attached by stay rods 20, 21 to the inner walls of the housing.
  • the lower end of bar 18 has opposed flats 22 against which two links 23, 24 are pivotally held by a pin 25 passing through the bar 18.
  • the outer ends of links 23, 24 are in turn pivoted to the upper ends of a pair of co­acting gripper arms 25, 26 by pins 27, 28.
  • the gripper arms are flat and of elongate form.
  • each arm extend downwardly through the lower end of the housing, each arm being pivoted at 29, 30 part way along its length adjacent to the point at which it passes through the housing. Below the pivots 29, 30 the arms taper downwardly to terminate in downwardly directed points 31, 32.
  • the arms carry a pair of co-operable inwardly directed teeth 33, 34 which are a little above the points 31, 32 and, when the arms are fully closed as shown, the teeth overlap each other.
  • the lower end of bar 18 carries an axially aligned threaded stud 35 which is guided within a bush 36 attached to the lower wall of the housing.
  • the stud carries a nut 37 which can be adjusted along the stud to determine the closed position of the gripper arms by contact with the upper end of bush 36.
  • the device In use the device is lowered over a stack of steel mesh with the pistons withdrawn into the cylinders 16 so that bar 18 is raised and the lower ends of the arms 25, 26 are spaced apart.
  • the lower ends of the arms penetrate the sheets of mesh and the points 31, 32 ensure that the assembly is angularly deflected about the stub shaft 13 should the arms contact a strand of the mesh.
  • the cylinders When the arms have penetrated several layers of mesh the cylinders are actuated to move the bar 18 down and thus move the teeth 33, 34 together beneath the strands.
  • the hydraulic circuit that operates the cylinders 16 includes a hydraulic accumulator so that the pressure applied to the arms is sustanied after they move together. This is important to ensure that should the teeth 33, 34 close onto a strand of the mesh they do not release it during the subsequent lifting or carrying operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Load-Engaging Elements For Cranes (AREA)
EP88302998A 1987-04-02 1988-04-05 Dispositif pour manipuler des treillis soudés pour béton armé Withdrawn EP0287257A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8707900 1987-04-02
GB8707900A GB2203120B (en) 1987-04-02 1987-04-02 Device for handling reinforcing mesh

Publications (1)

Publication Number Publication Date
EP0287257A1 true EP0287257A1 (fr) 1988-10-19

Family

ID=10615125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88302998A Withdrawn EP0287257A1 (fr) 1987-04-02 1988-04-05 Dispositif pour manipuler des treillis soudés pour béton armé

Country Status (2)

Country Link
EP (1) EP0287257A1 (fr)
GB (1) GB2203120B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1036291C2 (nl) * 2008-12-08 2011-07-28 Mbe Innovations B V Pneumatisch bedienbaar hijsgereedschap voor het hijsen, en één voor één plaatsen van beton bewapeningsmatten.
IT1396186B1 (it) * 2009-09-23 2012-11-16 Pigazzi Reti S R L Manipolatore per reti.
CN103204429A (zh) * 2013-04-12 2013-07-17 国鼎(南通)管桩有限公司 混凝土管桩模具吊装用机械挂钩

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1305361A (fr) * 1961-01-20 1962-10-05 Auxiliaire De Manutention Mode Palonnier à pinces réglables pour manutention de fardeaux parallélépipédiques
DE1556338A1 (de) * 1968-01-11 1970-01-22 Betonstahl Gmbh & Co Kg Vorrichtung zum Selektieren von Drahtstaeben aus Drahtbunden zwecks geordneter Weitergabe der selektierten Drahtstaebe an Drahtverarbeitungsmaschinen
DE7103738U (de) * 1971-05-19 Holstein & Kappert Maschinenfabrik Phoenix Gmbh Kastengreifer
CH566262A5 (en) * 1974-05-07 1975-09-15 Wirz Ernst Ag Kipper & Maschin Concrete reinforcing mesh handling tackle - has multiple grabs in pattern penetrating into standardised mesh stack
US3930585A (en) * 1974-05-20 1976-01-06 Lynch Jack M Coil lifting apparatus and method
GB2048212A (en) * 1979-04-23 1980-12-10 Zahnradfabrik Friedrichshafen Load Handling Grippers

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB850344A (en) * 1956-10-30 1960-10-05 Certus Maschb G M B H Improvements in or relating to machines for introducing or extracting bottles into or from bottle cases
GB968575A (en) * 1962-02-23 1964-09-02 Fruehauf Corp Improvements in or relating to spreader bars for lifting containers
AT246041B (de) * 1964-08-03 1966-03-25 Kumag A G Vorrichtung zum Stapeln und Entstapeln von wannenförmigem Stückgut, insbesondere von Harassen
GB1068394A (en) * 1965-05-12 1967-05-10 Richard Thomas Improvements in tongs for lifting steel slabs
NL6517076A (fr) * 1965-12-29 1967-06-30
US3468998A (en) * 1966-10-03 1969-09-23 Johann Lingl Method for producing bricks and thereafter hacking the same
CH649027A5 (it) * 1982-06-03 1985-04-30 Albe Sa Dispositivo per afferrare, centrare automaticamente e allineare l'asse longitudinale di corpi longiformi secondo l'asse di lavoro.
GB2129766A (en) * 1982-11-05 1984-05-23 Voden Transport So A hoisting frame for use in transporting sacks of material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7103738U (de) * 1971-05-19 Holstein & Kappert Maschinenfabrik Phoenix Gmbh Kastengreifer
FR1305361A (fr) * 1961-01-20 1962-10-05 Auxiliaire De Manutention Mode Palonnier à pinces réglables pour manutention de fardeaux parallélépipédiques
DE1556338A1 (de) * 1968-01-11 1970-01-22 Betonstahl Gmbh & Co Kg Vorrichtung zum Selektieren von Drahtstaeben aus Drahtbunden zwecks geordneter Weitergabe der selektierten Drahtstaebe an Drahtverarbeitungsmaschinen
CH566262A5 (en) * 1974-05-07 1975-09-15 Wirz Ernst Ag Kipper & Maschin Concrete reinforcing mesh handling tackle - has multiple grabs in pattern penetrating into standardised mesh stack
US3930585A (en) * 1974-05-20 1976-01-06 Lynch Jack M Coil lifting apparatus and method
GB2048212A (en) * 1979-04-23 1980-12-10 Zahnradfabrik Friedrichshafen Load Handling Grippers

Also Published As

Publication number Publication date
GB2203120A (en) 1988-10-12
GB2203120B (en) 1990-12-12
GB8707900D0 (en) 1987-05-07

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