EP1324942B1 - Safety device for a grasping device for lifting some masonry elements - Google Patents

Safety device for a grasping device for lifting some masonry elements Download PDF

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Publication number
EP1324942B1
EP1324942B1 EP01981168A EP01981168A EP1324942B1 EP 1324942 B1 EP1324942 B1 EP 1324942B1 EP 01981168 A EP01981168 A EP 01981168A EP 01981168 A EP01981168 A EP 01981168A EP 1324942 B1 EP1324942 B1 EP 1324942B1
Authority
EP
European Patent Office
Prior art keywords
grab
arms
hoisting
safety device
load
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 - Lifetime
Application number
EP01981168A
Other languages
German (de)
French (fr)
Other versions
EP1324942A1 (en
Inventor
Albertus Jacobus Gertrude Maria Van Dieten
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Individual
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Individual
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Publication of EP1324942A1 publication Critical patent/EP1324942A1/en
Application granted granted Critical
Publication of EP1324942B1 publication Critical patent/EP1324942B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
    • B66C1/442—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces actuated by lifting force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/28—Duplicate, e.g. pivoted, members engaging the loads from two sides
    • B66C1/30—Duplicate, e.g. pivoted, members engaging the loads from two sides and also arranged to grip the sides of the loads
    • B66C1/32—Duplicate, e.g. pivoted, members engaging the loads from two sides and also arranged to grip the sides of the loads of piled or stacked articles

Definitions

  • the invention concerns a safety device on grasping devices for masonry elements.
  • the safety device prevents falling of blocks or bricks out of the grasping device.
  • a lifting device with a safety device is for example disclosed in DE 77 29 334 U .
  • the invention concerns an appliance where after grasping and hoisting of the load almost instantly two arms move a profile underneath the load. When the load is put down the arms gives way at touching on the floor and the hoisting grab will open. There is no need for an action to remove the safety device.
  • Fig.2 In Fig.2 is (1) the hoisting grab. On joints (2) are two pivoting arms (3, 4) connected. Arms have about the form of a "L” and reach over load (7) and down. At the low ends of arms (3, 4) are profiles (5,6) secured, for instance by welding. Profiles (5, 6) are the same length as beams (9). To the end of arms (3,4) are rollers (8) mounted which extend out of profiles (5,6).To the ends of beams (9) are fixed plates (10) to prevent sideways falling out of blocks. Supporting plates (11) which are mounted on the arms of the scissor arm construction curtail the movement of arms (3, 4) so that with picking up of the load (7) profiles (5, 6) will not touch onto the load.
  • the hoisting grab will be held open by a catch (not drawn) after opening at putting down the load (7).
  • the arms (3, 4) are held open by supporting plates (11).
  • When the hoisting grab with arms (3, 4) is placed across the load rollers (8) touch the ground and with moving further downwards of the hoisting grab the arms (3, 4) will be spread.
  • the catch When the hoisting grab weighs upon the load (7) the catch will discharge the hoisting grab and at hoisting on eye (12) the hoisting grab will close and take up the load (7).
  • rollers (8) lose contact with the ground and by their weight arms (3, 4) will move to each other and profiles (5, 6) will be under the load. When now a brick gets loose, it will be captured by profiles (5, 6).
  • rollers (8) which are mounted on the ends of beams (9) prevent outer brick (13) to fall out sideways. At putting down of the load (7) rollers (8) will have the first contact with the ground and arms (3,4) spread themselves and with further descending the hoisting grab will open and the catch will keep the hoisting grab open and a new load (7) can be picked up.
  • the invention can also executed as a do it yourself kit and be mounted on existing hoisting grabs. There are different handles possible for directing the hoisting grab across the load to mounted to arms (3, 4), these are not mentioned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The invention concerns a safety device on grasping devices for masonry elements (7). The safety device prevents falling of blocks or bricks out of the grasping device. The invention concerns an appliance (1) where after grasping and hoisting of the load almost directly two arms (3, 4) direct a profile (5, 6) under the load. On putting down of the load the arms gives way at touching on the floor and the grasping device (1) can open. The arms are provided with rollers (8) which spread the arms on putting down and close at hoisting. The grasping device is foreseen with plates that prevents elements falling sideways out of the grasping device and supporting plates (11) which keep the arms spreaded when the grasping device is opened. The invention can also be executed as do it yourself kit.

Description

  • The invention concerns a safety device on grasping devices for masonry elements. The safety device prevents falling of blocks or bricks out of the grasping device. A lifting device with a safety device is for example disclosed in DE 77 29 334 U .
  • It is usual to load and unload packages of stones, blocks sand-lime bricks and similar with the help of grasping devices. Also horizontal transporting of packages with the help of hydraulic cranes is done with these grasping devices. The grasping device will be indicated as hoisting grab. In many cases of high-rise buildings are sand-lime bricks used in separation walls and similar and the sand-lime bricks have to be through to high levels. Sand-lime bricks are characterized by grit and dust through that makes the friction amongst them selves low.
  • This makes the chance for sliding out of an element large. It is than also necessary to have a safety device that prevents falling out of a loose element from the package. The problem is that the packages have to be taken off the floor with the grasping device. There is no possibility to fit a safety device underneath the package. In praxis the package is hoisted a little and a steel net is pulled under the load and fastened. Before putting down, the net has to be removed and the load can be placed.
  • The invention concerns an appliance where after grasping and hoisting of the load almost instantly two arms move a profile underneath the load. When the load is put down the arms gives way at touching on the floor and the hoisting grab will open. There is no need for an action to remove the safety device.
  • The invention is described with help of the drawing.
    • Fig 1. shows a grab without a safety device.
    • Fig 2. shows the side-view of a grab with safety device with the load on short distance of the ground.
    • Fig.3 shows a grab with the load on the ground.
    • Fig.4 shows partly the top view of a grab with safety device in open position.
  • Fig.1 shows a hoisting grab of the type that is used to load or unload packages bricks or blocks. The hoisting grab (1) uses the movement of a scissors to pinch the load when hoisting package of bricks (7) between beams (9) which are covered with rubber. The hoisting grab is of the type which is foreseen with a catch that keeps the hoisting grab open after delivering a load.
  • In Fig.2 is (1) the hoisting grab. On joints (2) are two pivoting arms (3, 4) connected. Arms have about the form of a "L" and reach over load (7) and down. At the low ends of arms (3, 4) are profiles (5,6) secured, for instance by welding. Profiles (5, 6) are the same length as beams (9). To the end of arms (3,4) are rollers (8) mounted which extend out of profiles (5,6).To the ends of beams (9) are fixed plates (10) to prevent sideways falling out of blocks. Supporting plates (11) which are mounted on the arms of the scissor arm construction curtail the movement of arms (3, 4) so that with picking up of the load (7) profiles (5, 6) will not touch onto the load.
  • The hoisting grab will be held open by a catch (not drawn) after opening at putting down the load (7). The arms (3, 4) are held open by supporting plates (11). When the hoisting grab with arms (3, 4) is placed across the load rollers (8) touch the ground and with moving further downwards of the hoisting grab the arms (3, 4) will be spread. When the hoisting grab weighs upon the load (7) the catch will discharge the hoisting grab and at hoisting on eye (12) the hoisting grab will close and take up the load (7). On taking up, rollers (8) lose contact with the ground and by their weight arms (3, 4) will move to each other and profiles (5, 6) will be under the load. When now a brick gets loose, it will be captured by profiles (5, 6). Plates (10) which are mounted on the ends of beams (9) prevent outer brick (13) to fall out sideways. At putting down of the load (7) rollers (8) will have the first contact with the ground and arms (3,4) spread themselves and with further descending the hoisting grab will open and the catch will keep the hoisting grab open and a new load (7) can be picked up.
  • There is a possibility that adapting joints (2) is not desirable. In that case a separate joint can be placed near joint (2). Because of clearance it is desirable to make the horizontal part (14) of arms (3, 4) as long as possible.
  • The invention can also executed as a do it yourself kit and be mounted on existing hoisting grabs. There are different handles possible for directing the hoisting grab across the load to mounted to arms (3, 4), these are not mentioned.

Claims (5)

  1. A vertically movable safety device for a grab comprising a scissor construction frame (1) provided with a pivot joint (2) on each opposite end of said frame and a pair of gripping beams (14, 14), each pivotally mounted to said joints and being arranged to engage opposite sides of a masonry element package during transport, said device comprising:- a pair of carrying arms (3, 4) each pivotally mounted at a first end to said same joints and being arranged to support said package after having been lifted by said gripping beams, characterised in that each arm further comprises at a second end, an 'L'-shape profile (5,6) and a roller (8), wherein said profiles are arranged to direct said arms towards each other and underneath said package after lifting and, wherein said rollers are arranged to direct said arms away from each other when said package is deposited on the ground.
  2. Safety device as in claim 1 characterised by supporting plates which are attached in use with a grab to the gripping beams (1L) and reach under the carrying arms (3, 4).; whereby with opened hoisting grab (1) said carrying arms (3, 4) with profiles (5, 6) also are held open by said supporting plates (11)
  3. Safety device for hoisting grab as in claim 1 and 2 characterised by plates (10) attached in use with a grab to the ends of beams (9) attached to the ends of said gripping beams (14) to prevent sideways falling out of stones
  4. Safety device for hoisting grab as in claim 1, 2 and 3 characterised in that said carrying arms (3, 4) are connected in use pivotal to a welded-on pivot placed on the gripping beams (14) near joint (2) of the scissor construction of hoisting grab (1).
  5. Method to adapt a hoisting grab with a safety device as in claim 1, 2, 3 and 4 characterised in that the device, consisting of carrying arms (3,4) with profiles (5, 6) is connected to elongated pivots (2) or welded-on pivots to existing hoisting grab (1) while supporting plates (11) and plates (10) are mounted to the existing hoisting grab (1).
EP01981168A 2000-10-13 2001-10-12 Safety device for a grasping device for lifting some masonry elements Expired - Lifetime EP1324942B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
NL1016407 2000-10-13
NL1016407 2000-10-13
NL1017575A NL1017575C2 (en) 2000-10-13 2001-03-13 Protection for lifting clamp for building elements.
NL1017575 2001-03-13
PCT/NL2001/000751 WO2002030804A1 (en) 2000-10-13 2001-10-12 Safety device for grasping device for lifting some masonry elements

Publications (2)

Publication Number Publication Date
EP1324942A1 EP1324942A1 (en) 2003-07-09
EP1324942B1 true EP1324942B1 (en) 2010-01-20

Family

ID=26643252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01981168A Expired - Lifetime EP1324942B1 (en) 2000-10-13 2001-10-12 Safety device for a grasping device for lifting some masonry elements

Country Status (9)

Country Link
EP (1) EP1324942B1 (en)
AT (1) ATE455725T1 (en)
AU (1) AU2002212827A1 (en)
DE (1) DE60141152D1 (en)
DK (1) DK1324942T3 (en)
ES (1) ES2340255T3 (en)
NL (1) NL1017575C2 (en)
PT (1) PT1324942E (en)
WO (1) WO2002030804A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106672792A (en) * 2017-01-07 2017-05-17 青岛蓝天创先科技服务有限公司 Safe and rapid aerated concrete block overhead hoist
WO2023163585A1 (en) 2022-02-28 2023-08-31 Van Dieten Ashley Albertus Jacobus Gertrude Maria Hoisting device

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100553894C (en) * 2007-02-09 2009-10-28 福建海源自动化机械股份有限公司 The clamp mechanism of stacking machine
FR2993194B1 (en) * 2012-07-13 2014-08-22 Areva Nc DEVICE FOR HANDLING CASES CONTAINING OBJECTS
CN105712184A (en) * 2016-04-17 2016-06-29 昆山克鲁克机电设备有限公司 Crane steel rail hanging tongs
CN105712188A (en) * 2016-04-27 2016-06-29 山东钢铁股份有限公司 Lifting appliance
CN105712189A (en) * 2016-04-28 2016-06-29 上海宝田新型建材有限公司 Hoisting fixture for cleaning operation for large bearing
CN108839854A (en) * 2018-07-23 2018-11-20 荥经县旭光电子有限公司 A kind of automation Waste Acid From Hua Cheng Foil boxing apparatus
CN109867203A (en) * 2019-03-14 2019-06-11 益阳康益机械发展有限公司 Variable diameters lift reversal hanger
JP6739021B1 (en) * 2019-04-25 2020-08-12 株式会社乗富鉄工所 Lifting jig
CN110948506A (en) * 2019-12-03 2020-04-03 汪鸣飞 Friction roller type grabbing and loading device and method
DE102021108566A1 (en) 2021-04-07 2022-07-21 Schaeffler Technologies AG & Co. KG handling device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB275055A (en) * 1926-11-15 1927-08-04 Franz Gerdes Improvements in and relating to automatic crane grabs
FR1582016A (en) * 1967-12-28 1969-09-26
IT976860B (en) * 1972-01-14 1974-09-10 Bofors Ab DEVICE AND PROCEDURE FOR THE TRANSPORT OF OBJECTS IN THE SHAPE OF FLAT PARALLELEPIPED
US4093298A (en) * 1977-01-17 1978-06-06 The Raymond Lee Organization, Inc. Compressor tongs
DE7725334U1 (en) * 1977-08-16 1978-03-02 Abitra Maschinenfabrik Gmbh & Co Kg, 5443 Kaisersesch PACKAGING GRIPPERS
GB8924222D0 (en) * 1989-10-27 1989-12-13 Squires Michael Load handling apparatus
US5863086A (en) * 1994-11-21 1999-01-26 Mcneilus Truck And Manufacturing, Inc. Container holding and lifting device
JPH11180672A (en) * 1997-12-19 1999-07-06 Nkk Corp Load suspending device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106672792A (en) * 2017-01-07 2017-05-17 青岛蓝天创先科技服务有限公司 Safe and rapid aerated concrete block overhead hoist
CN106672792B (en) * 2017-01-07 2017-11-24 青岛蓝天创先科技服务有限公司 A kind of quick handling apparatus of safe air-entrained concrete building block
WO2023163585A1 (en) 2022-02-28 2023-08-31 Van Dieten Ashley Albertus Jacobus Gertrude Maria Hoisting device
NL2031095B1 (en) 2022-02-28 2023-09-07 Albertus Jacobus Gertrude Maria Van Dieten Ashley Hoisting device

Also Published As

Publication number Publication date
EP1324942A1 (en) 2003-07-09
PT1324942E (en) 2010-04-21
WO2002030804A1 (en) 2002-04-18
NL1017575C2 (en) 2002-04-16
ATE455725T1 (en) 2010-02-15
DE60141152D1 (en) 2010-03-11
AU2002212827A1 (en) 2002-04-22
ES2340255T3 (en) 2010-06-01
DK1324942T3 (en) 2010-05-17

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