US3741338A - Vertically collapsible upright for lifting gantries and the like - Google Patents

Vertically collapsible upright for lifting gantries and the like Download PDF

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Publication number
US3741338A
US3741338A US00260218A US3741338DA US3741338A US 3741338 A US3741338 A US 3741338A US 00260218 A US00260218 A US 00260218A US 3741338D A US3741338D A US 3741338DA US 3741338 A US3741338 A US 3741338A
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United States
Prior art keywords
articulated
base
low
leg
axis
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Expired - Lifetime
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US00260218A
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English (en)
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P Durand
J Durand
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
    • B66C19/02—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries collapsible
    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/34—Scaffold constructions able to be folded in prismatic or flat parts or able to be turned down
    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs

Definitions

  • a vertically collapsible apparatus including an upper beam, such as lifting gantries, scaffoldings, a vertical upright or leg, normally used in pair, said leg comprising three elements pivoting on one another and on the beam by four axes of articulation (as known per se), wherein the four axes are parallel and perpendicular to the axis of the beam.
  • the three elements are a triangular element articulated by its apex on the beam at a distance of the end thereof, a trapezoidal element pivoting at the base of the first triangular element, and another triangular element having its apex articulated on the end of the beam and its base articulated on the trapezoidal element between the large and the small base thereof, whereby said apparatus can assume an operating and a transport position by a simple and practical manual operation.
  • the present invention comes within the field of vertically collapsible apparatus and relates in particular to lifting gantries, scaffoldings, etc.; it is concerned more particularly with articulated legs enabling apparatus of this type, equipped therewith, to give normal performance and to be folded for transport purposes, thus considerably reducing their over-all height above the ground without increasing any of their other dimensions.
  • the main result, where such apparatus is concerned, is that it can be moved about without difficulty and towed on roads.
  • Devices are also known in which one or more components are collapsible, each one in itself, and also on one another, after dismantling this solution has been adopted for gantries designed for certain special purposes and only having to bear a comparatively moderate load.
  • the purpose of the invention is to enable a lifting gantry to be reduced in size to the maximum possible extent, by a simple and practical manual operation, in order to cause it to assume the transport position, after which the said gantry can be caused to assume the operating position, by a further simple and practical manual operation.
  • a gantry according to the invention comprises an upper beam and two vertical uprights of generally triangular shape, such as those already known per se. It is characterized by the fact that each upright comprises three elements, i.e.
  • a first element of a generally triangular shape, of which the apex is articulated at a certain distance from one end of the beam
  • a base a second element, of generally trapezoidal shape, with a small base articulated to the base of the first element and a large base preferably fitted with wheels
  • a third element of a generally triangular shape, having an apex articulated to the end of the beam and a base articulated to the second element.
  • the three elements form an articulated quadrilateral figure which becomes a triangle when in the extended position the first element and the second element are situated in one and the same plane, which is' then vertical.
  • the vertical uprights are triangles of which each side is in two parts, articulated to each other, enabling the lower and the upper part of the triangle to be folded over onto each other.
  • the upper part is articulated to the beam and the lower part connected to the latter by stiffening devices at their two ends, i.e. to the lower part and to the beam respectively.
  • Means are also provided for moving each upright from the operating position (in which the upper and lower parts are vertical and in line) to the collapsed position (in which the upper and lower parts are folded towards each other) and vice versa.
  • a lifting gantry marked as a whole, essentially consists of a beam 2 supported by two uprights 1 of a generally triangular shape, this arrangement being already known per se. It
  • the invention enables the gantry 100 to be moved from the position shown in FIG. 3 to that shown in FIG. 4, known as the collapsed position.
  • each upright l is not rigid but consists of two elements 11 and 12, articulated to each other in 'a manner which will be described with reference to FIGS. 1 and 2.
  • FIGS. 1 and 2 show the righthand upright and part of the beam 2 the upright 1 consists of two parts, one part 11 of a generally triangular shape and the other part 12 of a generally trapezoidal shape.
  • the triangular part 11 consists of two steel tubes 1 11 and 112, rigidified by a tube 113 welded to the tubes 111 and 112 these latter converge towards a strap 3,
  • strap 3 has a boring 144 (FIG. 2) in each of its two vertical cheeks, these two borings having one and the same horizontal axis.
  • the beam 2 bears a strap 10 of which the vertical cheeks fit into those of the strap 3.
  • the vertical cheeks of the straps 3 and 10 are traversed from side to side by one and the same horizontal shaft 14, which constitutes the main articulation shaft of the supporting upright 1 on the beam 2.
  • the tubes 111 and 112 bear fiat bars 114 and 115 respectively.
  • the trapezoidal part 12 Consists of tubes 121 and 122, rigidified at the bottom by a tube 126 and at their point of convergence by a tube 123.
  • the tubes 123 and a bear flat bars 127 127 and 114, on the onehand, and 128and 115, on the other, being opposite to one another,-borings pass through the tubes 111 and 121 and the flat bars 114 and 127 on the one hand and through'the tubes 112 and 122 and the flat bars 128 and 115 on theother these borings are coaxial and each traversed by a shaft 41 on the one hand and 51 on the: other, the shafts being supported and locked in position in the manner already known.
  • borings 42 and 52 parallel to the first borings mentioned and situated lower down, enable the parts 11 and 12 to be rendered inte- 20 i to the tube 123.
  • the sector gral with each other in the operating position by means of suitable pins.
  • the assembly consisting of tube 121, the flatbar l27,
  • the tackle 32 engages the shaft 8 of the strap 9.,by a closed hook at one end and by a, cable 39 at the other end, attached to a sector 40 comprising a securing strap 43 (FIG. 1) and a guide groove.
  • flat bar 114, tube 111 and shaft 41 forms a knuckle joint marked 4.
  • assembly consisting of tube 122, flat bar 128, flat bar 115, tube 112 and shaft 51 constitutes a knuckle joint marked 5.
  • Two stiffening tubes 6 and 7 for the gantry 100 are I articulated, on the one hand, by a shaft 8 'to a strap 9 f welded to the beam 2, the said tubes 6 and 7being articulated by a shaft61 to the tube 121 and by a shaft 62 to the tube 122 respectively.
  • Rubber stops such as and 16 are affixed 44 (FIG. 2) of the cable 39.
  • the sector 40 is welded to the tube 123. This securing system is consolidatedby welded to the sector 40 and 40 is thus integral with the" tubes 124and 125 (FIG. 1)
  • the operationof openingout or collapsing the gantry is as follows: the gantrybeing in the collapsed position to lugs 15a and 16a welded at right angles to the flat bars 115 and 128 and also to the flat bars 114 and 127,
  • a strap 17 forthe tube 121 and a strap 18 for the tube 122 each of these straps bears a roller, such as 19 and 20, rotating on shafts 21 and 22 respectively.
  • the rollers 19 and are the normal means of supporting the gantry on the ground in its operating position.
  • rollers as a support is suitable for sufficiently hard and level ground, taking into account the loading of the gantry; in the case of excessively soft or uneven ground the supporting surface has to be increased or the level evened out, or both together, this being the object achieved by means of the devices 23 and24 which are adjustable in height and each of which consists of a screw 25 passing through the tube 126 and engaging two nuts 26 and 27, the screw 25 being provided at the top with a cylindrical head 28 having a boring 29, to enable it to be operated with a tommy bar; the said screw 25 is provided at the bottom with a steel plate 30 of suitable area, which can be increased by affixing a further suitable surface, as far as the level of the supporting ground.
  • the device 23 is identically similar to the device 24 just described and also symmetrical thereto.
  • the pull hard device33 (FIG. 2) to exert a tractive force via the cable 31and the tackle 32 (arrow A in FIG. 2) on the cable 39, causing the sector 40 (FIG. 2) to rotate in the direction shown by the'arrow A.
  • the sector 40 integral with the tube 123 and with the whole of the part 12, sets the said part 12 in rotation this part 12 can then only rise, by bearing on the ground via the rollers 19 and 20, likewise raising the part 11 of the upright and the beam 2, via the knuckle joints 4 and 5 the acute angle increase between the parts 11 and 12 of the upright, thus aligning the tubes 111 and 121 (FIG. 1) as well as tubes 112 and 122.
  • the supporting upright l is then extended and vertical, the cable 39 being stretched and completely outside the groove 44 (FIG. 2) of the sector 40.
  • stiffening tubes 6 and 7 enable the gantry to be rendered longitudinally stable, not only in the operating position but also duringall manipulations, which is indispensable.
  • Articulated leg normally used by pair and adapted to raise or lower a rigid upper beam between an operating position and a folded position, the leg comprising three elements articulated to one another, at least one of these three elements being articulated to the said upper rigid element, wherein the improvements comprise the combination of a high element of generally triangular shape of which the apex is articulated according to a first axis perpendicularto that of the upper beam and at a distance from one of its ends, and a base a lower element of generally trapezoidal shape, having a small base articulated to the base of the said high element, according to a second axis parallel to said first axis, and a large base serving as a support for the legs a stabilizing element of generally triangular shape, having an apex articulated to the end of the upper beam, according to a third axis parallel to said first axis and a base articulated to the low element according to a fourth axis parallel to said second axis andat a distance thereof.
  • Articulated leg according to claim 1 wherein means are provided for moving the said articulated leg from the folded position to the operating position, the said means consisting of a grooved sector integral with the low element and a traction cable passing round and fixed to the said grooved sector at one end and attached to a point on the upper beam on the other end.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manipulator (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Emergency Lowering Means (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
US00260218A 1971-06-11 1972-06-06 Vertically collapsible upright for lifting gantries and the like Expired - Lifetime US3741338A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7122126A FR2140960A5 (enrdf_load_stackoverflow) 1971-06-11 1971-06-11

Publications (1)

Publication Number Publication Date
US3741338A true US3741338A (en) 1973-06-26

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Family Applications (1)

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US00260218A Expired - Lifetime US3741338A (en) 1971-06-11 1972-06-06 Vertically collapsible upright for lifting gantries and the like

Country Status (5)

Country Link
US (1) US3741338A (enrdf_load_stackoverflow)
DE (1) DE2228108A1 (enrdf_load_stackoverflow)
ES (1) ES403725A1 (enrdf_load_stackoverflow)
FR (1) FR2140960A5 (enrdf_load_stackoverflow)
IT (1) IT956318B (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100163342A1 (en) * 2006-03-20 2010-07-01 Pierre Rondreux Foldable trestle
US20100294595A1 (en) * 2009-05-19 2010-11-25 Jason Todd Osburn Adjustable scaffolding apparatus
US20110132861A1 (en) * 2008-02-20 2011-06-09 Reid Lifting Limited Upright support for gantry
US8016079B1 (en) * 2008-03-20 2011-09-13 Huls Darryl W Fold out sawhorse with pivotable, cantilevered support members
US20110272213A1 (en) * 2010-05-10 2011-11-10 Taron L Michael Collapsible Saw Horse
US20120018254A1 (en) * 2010-01-15 2012-01-26 Reechcraft, Inc. Portable scaffold system
WO2012156741A1 (en) * 2011-05-18 2012-11-22 Reid Lifting Limited A foldable gantry
US8684138B1 (en) * 2011-12-16 2014-04-01 II John E. Marsh Hunting stand assembly
CN104265808A (zh) * 2014-09-11 2015-01-07 河南飞龙(芜湖)汽车零部件有限公司 一种组合式制动轮缸
CN110271883A (zh) * 2019-06-10 2019-09-24 国网湖南省电力有限公司 一种车载自装卸平台及其液压机械腿
CN112456339A (zh) * 2020-12-02 2021-03-09 中国农业银行股份有限公司 一种机房用起重装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728000A1 (fr) * 1994-12-12 1996-06-14 Tatin Michel Structure deformable
NL2000623C2 (nl) * 2007-05-01 2008-11-06 Martin Kok Projectinrichting B Verplaatsingsinrichting voor meubelen.
RU2652538C1 (ru) * 2017-05-23 2018-04-26 Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" Козловой кран разборно-мобильный

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1967886A (en) * 1933-03-20 1934-07-24 Ralph W Johnson Sawhorse
US2744794A (en) * 1953-12-07 1956-05-08 Patent Scaffolding Co Inc Foldable end-frames for sectional scaffoldings
US3085586A (en) * 1960-07-05 1963-04-16 Elon D Mcdonough Foldable tent structure
US3235038A (en) * 1963-04-10 1966-02-15 Harsco Corp Folding scaffold
US3351078A (en) * 1965-06-01 1967-11-07 Floyd R Kleiman Car top camper
US3628765A (en) * 1969-07-16 1971-12-21 Jack Sanders Adjustable concrete deck forming platform

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1967886A (en) * 1933-03-20 1934-07-24 Ralph W Johnson Sawhorse
US2744794A (en) * 1953-12-07 1956-05-08 Patent Scaffolding Co Inc Foldable end-frames for sectional scaffoldings
US3085586A (en) * 1960-07-05 1963-04-16 Elon D Mcdonough Foldable tent structure
US3235038A (en) * 1963-04-10 1966-02-15 Harsco Corp Folding scaffold
US3351078A (en) * 1965-06-01 1967-11-07 Floyd R Kleiman Car top camper
US3628765A (en) * 1969-07-16 1971-12-21 Jack Sanders Adjustable concrete deck forming platform

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100163342A1 (en) * 2006-03-20 2010-07-01 Pierre Rondreux Foldable trestle
US20110132861A1 (en) * 2008-02-20 2011-06-09 Reid Lifting Limited Upright support for gantry
US8739990B2 (en) 2008-02-20 2014-06-03 Reid Lifting Limited Upright support for gantry
US8016079B1 (en) * 2008-03-20 2011-09-13 Huls Darryl W Fold out sawhorse with pivotable, cantilevered support members
US20100294595A1 (en) * 2009-05-19 2010-11-25 Jason Todd Osburn Adjustable scaffolding apparatus
US20120018254A1 (en) * 2010-01-15 2012-01-26 Reechcraft, Inc. Portable scaffold system
US8459412B2 (en) * 2010-01-15 2013-06-11 Reechcraft, Inc. Portable scaffold system
US20110272213A1 (en) * 2010-05-10 2011-11-10 Taron L Michael Collapsible Saw Horse
US10780571B2 (en) * 2010-05-10 2020-09-22 L. Michael Taron Collapsible saw horse
US9512627B2 (en) * 2010-05-10 2016-12-06 L. Michael Taron Collapsible saw horse
JP2014513658A (ja) * 2011-05-18 2014-06-05 リード・リフティング・リミテッド 折畳式ガントリ
GB2490926B (en) * 2011-05-18 2015-01-07 Reid Lifting Ltd A foldable gantry
AU2012257576B2 (en) * 2011-05-18 2017-03-02 Reid Lifting Limited A foldable gantry
US10399827B2 (en) 2011-05-18 2019-09-03 Reid Lifting Limited Foldable gantry
WO2012156741A1 (en) * 2011-05-18 2012-11-22 Reid Lifting Limited A foldable gantry
US10981758B2 (en) 2011-05-18 2021-04-20 Reid Lifting Limited Trolley
US11104554B2 (en) 2011-05-18 2021-08-31 Reid Lifting Limited Foldable gantry
US8684138B1 (en) * 2011-12-16 2014-04-01 II John E. Marsh Hunting stand assembly
CN104265808A (zh) * 2014-09-11 2015-01-07 河南飞龙(芜湖)汽车零部件有限公司 一种组合式制动轮缸
CN110271883A (zh) * 2019-06-10 2019-09-24 国网湖南省电力有限公司 一种车载自装卸平台及其液压机械腿
CN110271883B (zh) * 2019-06-10 2024-06-11 国网湖南省电力有限公司 一种车载自装卸平台及其液压机械腿
CN112456339A (zh) * 2020-12-02 2021-03-09 中国农业银行股份有限公司 一种机房用起重装置

Also Published As

Publication number Publication date
DE2228108A1 (de) 1973-01-04
FR2140960A5 (enrdf_load_stackoverflow) 1973-01-19
IT956318B (it) 1973-10-10
ES403725A1 (es) 1975-05-16

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