WO2015013773A1 - Dispositif d'enclenchement de levage - Google Patents

Dispositif d'enclenchement de levage Download PDF

Info

Publication number
WO2015013773A1
WO2015013773A1 PCT/AU2014/050169 AU2014050169W WO2015013773A1 WO 2015013773 A1 WO2015013773 A1 WO 2015013773A1 AU 2014050169 W AU2014050169 W AU 2014050169W WO 2015013773 A1 WO2015013773 A1 WO 2015013773A1
Authority
WO
WIPO (PCT)
Prior art keywords
clutch
lifting
shackle
panel
edge
Prior art date
Application number
PCT/AU2014/050169
Other languages
English (en)
Inventor
Robert Sladojevic
Original Assignee
Casne Verige Pty 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
Priority claimed from AU2013902903A external-priority patent/AU2013902903A0/en
Application filed by Casne Verige Pty Ltd filed Critical Casne Verige Pty Ltd
Publication of WO2015013773A1 publication Critical patent/WO2015013773A1/fr

Links

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
    • B66C1/62—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 comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—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 comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • B66C1/666—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 comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof for connection to anchor inserts embedded in concrete structures
    • 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
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/04—Cores for anchor holes or the like around anchors embedded in the concrete
    • 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
    • E04G21/142—Means in or on the elements for connecting same to handling apparatus

Definitions

  • the present invention is directed to lifting precast concrete panels of the type used in building construction.
  • the invention is directed to clutches used for the engagement of lifting anchors embedded within precast concrete panels, and other concrete elements used in construction.
  • precast concrete panels In the fabrication of precast concrete panels, it is necessary to lift the panel from the horizontal orientation (in which it is cast) to a vertical orientation for transportation and subsequent erection at a building site.
  • the panel is typically lifted by the edge of the panel that is the longer dimension and generally destined to be the vertical side of the precast element when erected.
  • the precast element is lifted off the casting table by this edge, and generally handled for storage and transport to the site by this same edge.
  • edge lift anchors are incorporated into the reinforcing structure of the panel prior to casting.
  • the head of the anchor is encased within a removable void former to form a recess on the panel edge about the anchor head, thereby providing the space required for engagement of lifting equipment.
  • the anchor engages with a lifting clutch which in turn connects to a crane.
  • Prior art lifting clutches have two main parts: the clutch head (which connects to the lifting anchor), and the clutch shackle (also termed “clutch hoop" or “dutch ring”, which connects directly to the lifting crane rigging).
  • the present invention provides a lifting clutch configured such that in use, the clutch is substantially incapable of contacting an edge surface area and/or face surface area of a concrete panel to wh ich the clutch is engaged .
  • the clutch is configured such that, in use, the lifting point is disposed distal to the edge surface of the concrete panel.
  • the lifting point is disposed substantially orthogonal to the edge surface of the concrete panel.
  • the lifting point is disposed at least about 5, 10, 15, 20, 25 or 30 centimetres from the edge surface of the concrete panel.
  • the edge surface area and/or face surface area for which the clutch is incapable of contact is above or below a lifting anchor to which the lifting clutch is engaged.
  • the edge surface area and/or face surface area for which the clutch is incapable of contact is not an area lateral to a lifting anchor to which the lifting clutch is engaged.
  • the clutch or a part of the clutch, is configured to be substantially incapable of freely moving about a point of contact formed between the clutch shackle and clutch head to which the clutch is attached.
  • the clutch comprises a first and second portion the first portion is substantially incapable of free movement of the first portion relative to the second portion.
  • the clutch or a part of the clutch, is configured to be pivotable only along or parallel to the longitudinal axis of the edge of the panel having an anchor to which the clutch is engaged.
  • the clutch comprises a clutch head section and a dutch shackle section in pivotal connection, wherein the clutch head section and/or clutch shackle section is/are (i) configured, or (ii) pivotally connected together such that, in use , the shackle section is substantially incapable of pivoting freely.
  • the clutch shackle section is capable of pivoting about a single axis.
  • the axis is at 90 degrees to the longitudinal axis of the pane] edge having the anchor to which the clutch is engaged.
  • the clutch is capable of supporting a load of at least about 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 12, 13, 14, 15, 16, 17, 18, 19, or 20 tonnes.
  • the present invention provides a concrete panel lifting system comprising a clutch as described herein, and one or more components of a lifting apparatus and/or associated rigging.
  • the present invention provides a method for lifting a precast concrete panel from a substantially horizontal position to a substantially vertical position, the method comprising the step of engaging a lifting clutch as described herein with an anchor disposed within a precast concrete element, or use of a system as described herein.
  • the element is a panel of the type used in building construction.
  • Fig . 1 is a perspective view of a lifting clutch of the present invention. The clutch is shown in the closed position.
  • Fig. 2 is a partially exploded perspective view of the lifting clutch of Fig. .
  • Fig. 3 is a cross-sectional diagrammatic view of the lifting clutch of Figs. 1 and 2 engaged with an edge anchor embedded in a precast concrete panel.
  • Fig. 4 is a diagram of a concrete panel being lifted by two edge anchors of the present invention.
  • Figs. 5, 6 and 7 are lateral views of alternative lifting clutches of the present invention.
  • the clutches are limited in rotation by the presence of various protrusions which physically hinder movement of the shackle relative to the head.
  • the present invention provides a Iifting clutch configured such that, in use, the clutch is substantially incapable of contacting an edge surface area and/or face surface area of a concrete panel to wh ich the clutch is engaged.
  • a Iifting clutch configured such that, in use, the clutch is substantially incapable of contacting an edge surface area and/or face surface area of a concrete panel to wh ich the clutch is engaged.
  • damage to concrete panels can be caused, at least in part, by the use of existing clutches which in edge lifting situations are free to contact the edge face during Iifting, particularly when the cast concrete element is lifted from its cast horizontal elevation to the vertical elevation.
  • Prior artisans have not questioned the suitability of existing lifting dutches (as used for face lifting applications) for edge lifting, and have focussed on the accurate placement of Iifting anchors and precisely locating the crane directly vertically over the panel.
  • Face Iifting clutches of the prior art are able to freely pivot about all axes. This ability is advantageous in face Iifting applications, as it allows for ease of attachment to the Iifting anchor and also allows for the use of multiple crane rigging config rations.
  • Prior art clutches (whether used for pin-type anchors and plate-type anchors) are of fundamentally the same construction. Both have a rounded head portion for connection to the lift anchor. Head portions for the plate anchors typically comprise a pin which extends through the anchor, whilst those for th pin anchors comprise a region which fits around the head of the in anchor.
  • Both types of anchor comprise a shackle extending through the centre of the clutch head, the shackle being abie to freeiy rotate 360 degrees and pivot slightly more than 180 degrees in any direction around the head. Applicant's provision of a clutch that is incapable of such free movement is a significant departure from existing dogma in clutch design.
  • Limitation of free movement allows, in some embodiments, for a clutch configured such that, in use, the lifting point is disposed distal to the edge surface of the concrete panel.
  • a clutch that is incapable of free movement is able, at least in some lifting circumstances, to remain substantially rigid against a lifting force.
  • lifting point is intended to include a point on the clutch to which a Sifting force is applied.
  • the lifting point is disposed substantially orthogonal to the edge surface of the concrete panel. Greatest separation between the edge of the concrete panel and the lifting point (for a clutch of given length) is achieved in this configuration. Accordingly, the opportunity for the clutch or any associated rigging or crane component to contact the edge is minimised.
  • the clutch is configured such that the lifting point is disposed at least about 5, 10, 5, 20, 25, 30, 35, 40, 45 or 50 centimetres from the edge surface of the concrete panel
  • the clutch is configured so as to be substantially incapable of contacting an edge surface area and/or face surface area of a concrete panel to which the clutch is engaged.
  • the edge surface area and/or face surface area for which the clutch is incapable of contact is any area of the 360 degree area that surrounds the anchor to which the dutch is engaged in use.
  • the clutch is configured such that the edge surface area and/or face surface area for which the clutch is incapable of contact is above or below a lifting anchor to which the lifting clutch is engaged. Panel edge surface lying above or below the anchor to which the clutch is engaged is found to be more likely damaged. Less likely to be damaged are areas lateral to the anchor, and therefore in some embodiments the edge surface area and/or face surface area for which the dutch is incapable of contact is not an area lateral to a lifting anchor to which the lifting dutch is engaged.
  • the present Applicant has identified the problem with prior art clutches in so far as existing clutches allow for the free movement about the connecting point of the clutch head and dutch shackle. This allows for the unfettered rotation and free contact of the clutch shackle and possibly any associated lifting or rigging hardware connected to the clutch shackle with the panel. Accordingly, in one embodiment the clutch shackle (or a part of the clutch) is configured to be substanttally incapable of freely moving about a point of contact formed between the clutch head and clutch shackle. The restricted movement of the clutch shackle in relation to the clutch head limits the ability for the clutch shackle and rigging fixtures and hardware connected to it to contact and damage concrete about the clutch head connected to the lifting anchor.
  • Lifting clutches typically comprise a head portion and a shackle portion, with the clutch as a whole configured to allow unfettered relative movement between the two portions.
  • the present clutches comprise two or more parts, the present clutches are substantiall incapable of free movement of the first portion relative to a second portion.
  • Means for limiting the movement of the dutch relative to the anchor, or a shackle relative to a head portion within a clutch may be achieved by any method deemed suitable by the skilled artisan, and with the benefit of the present description.
  • the lifting clutch comprises a clutch head section and a clutch shackle section in pivotal connection, wherein the clutch head section and/or dutch shackle section is/are (i) configured, or (ii) pivotally connected together such that, in use , the shackle section is substantially incapable of pivoting freely.
  • This embodiment allows for some relative movement between the head and shackle, which is desirable in lifting applications. However, the movement may be restricted such that the clutch (or a part of the clutch, such as the shackle) is incapable of contacting an edge surface area and/or face surface area of the precast panel.
  • the clutch shackle section is capable of pivoting about a single axis only.
  • the axis is at 90 degrees to the longitudinal axis of the panel edge having the anchor to which the clutch is engaged.
  • the shackle is capable of pivoting along the long edge surface of fine panel, but is incapable of relative movement in any other direction thereby avoiding any contact with any corner formed between a face surface and an edge surface of the panel.
  • Such pivoting may be provided by use of a substantially non- deforrrtabfe pin which extends through the clutch head and shackle, thereby providing for pivoting about the central axis of the pin only.
  • This unidirectional pivoting arrangement allows for the shackle to remain rigid when a force is applied to lift the panel form the horizontal cast orientation to the vertical orientation for handling and transportation etc. However when the panel is lifted at least some way (and the opportunity for contact between the clutch and the panel is decreased or substantially removed) the shackle is able to pivot along the edge axis of the panel. This pivoting movement allows for the clutch to orientate toward an equalizing block or pulley shared with a clutch attached to an adjacent anchor.
  • a preferred embodiment of the invention having this unidirectional pivoting arrangement is more fully described infra.
  • Other means by which clutch movement may be limited will be apparent.
  • a pin as described in the preferred embodiment and Figs 1 to 3 whereby region(s) of the clutch head and/or clutch shackle are structured (or comprise structures) so as to cause spatial interference to relative movement
  • This interference may be achieved by disposing ledges, bulges, protrusions, members, evaginations and the like in relevant positions such that the movement of the shackle with reference to the head is limited.
  • the clutch head may comprise an oversized aperture in the centre (similar to that found in existing clutches) however by altering the loop in the clutch shackle so as not to be rounded at the external profile, but instead square.
  • the clutch head has protruding tabs or deformations with landings at appropriately located positions along the shackle.
  • a protrusion extending outwards from the clutch head making it thicker at the protrusion may also be included. The external part of the clutch shackle would contact this protaision in the clutch head thereby preventing the shackle from rotating across the clutch head axis past a certain point of rotation, after which any further rotation would cause the clutch shackle to then contact the panel edge.
  • rotation of the clutch shackle across the clutch head axis may be limited to a specific rotation of angles of at least about 70, 80, 90 or 100 degrees. This prevents any further rotation of the clutch shackle that would result in the shackle and/or rigging equipment (or other hardware attached thereto) contacting the panel edge.
  • Reference is made to the alternative embodiments are shown in Figs. 5, ⁇ and 7 which are discussed further infra as preferred embodiments.
  • the clutch shackle rotation across the clutch head axis is limited to a relative angle across the clutch head axis (such as at least about 70, 80, 90 or 100 degrees)
  • the clutch shackle can be limited by the same means of interference between the clutch shackle and clutch head being achieved by disposing ledges, bulges, protrusions, members, evaginations and the like so as not to allow any rotation of the clutch shackle across the clutch head axis or at 90 degrees to the clutch head axis as illustrated in Fig 7.
  • the clutch may have shackle portion which is twisted or bent in any manner limiting the relative movement of the shackle in reference to the head.
  • Lifting clutches of the present invention are fabricated from a suitably strong material such as steel, and are capable of supporting a load of at least about , 2, 3 , 4, 5, 6, 7, 8, 9, 10, 1 , 12, 13, 14, 15, 18, 17, 18, 19, or 20 tonnes in some embodiments.
  • the clutches of the present invention have been described and drawn by reference to use with plate-typ anchors. It will be understood that the invention is equally applicable to pin- type anchors. Moreover, suitability of the present clutches had been described mainiy by reference to the lifting of precast concrete panels. There is no intention that the present clutches be limited to those suitable onl to use with panels or other slender concrete elements.
  • the present invention provides a concrete panel lifting system comprising a clutch as described herein and one or more components of a Sifting apparatus and/or associated rigging.
  • a further aspect of the present invention provides a method for lifting a precast concrete panel from a substantially horizontal position to a substantially vertical position, the method comprising the step of engaging the lifting clutch of any one of claims.
  • the lifting is edge lifting, and may be lifting from a substantially horizontal position to a substantially vertical position.
  • Fig. 1 shows generally a lifting clutch 2 comprising a head portion 4 and a shackle portion 6.
  • the head portion 4 has a clutch pin 8 which is moveable from a closed position (shown) to an open position (not shown) within a recess 9 by actuation of a handle 16.
  • the shackle portion 6 has an eye 10 through which lifting rigging may be inserted.
  • the shackle portion 6 is pivotally connected to the head portion 4 about a pin 14 which is inserted through an aperture 12 in the shackle portion 6.
  • the pin 14 extends through the head portion 4 (not shown).
  • Fig. 2 It will be apparent from Fig. 2 that the shackle 6 is able to pivot (relative to the head portion 4) along a single axis only, as indicated by the double-headed arrow 18, However, the shackle 6 is unable to pivot along any other axis, and is therefore heavily restricted.
  • a partially exploded view of the lifting clutch of Fig. 1 is shown in Fig, 2. This view reveals the aperture 20 running through the head 4.
  • This preferred embodiment is distinct from prior art clutches whereby the clutch shackle has a steel loop which extends through an oversized aperture in the clutch head and is welded to the shackle plate so as the clutch head and shackle are permanently joined, although able to move freely in any direction through the oversized aperture in the clutch head.
  • the shackle 6 shown in the clutch of Figs 1 and 2 has a two side plated with apertures configured to accommodate a steel pin snuggly.
  • the head of the clutch also has apertures configured to snuggly accommodate the steel pin.
  • the shackle is placed over the clutch head such that the apertures align. The steel pin is Inserted put though the shackle and clutch head apertures and then retained permanently by plug welding to the shackle sides.
  • the apertures in the shackle sides are the same size as those in the clutch head and sized to accommodate the pin without any significant slack.
  • Fig, 3 is a cross-sectional diagram of the lifting clutch of Figs. 1 and 2 as attached to an anchor 30 embedded with a concrete panel 32.
  • the anchor 30 is attached to a tension bar 34.
  • the clutch pin (not shown) extends through the eye 36 of the anchor 30 to secure the clutch to the anchor, it will be noted that due to the pin (position as shown at 14) the shackle 6 is prevented from moving in an up/down direction (as the Fig is drawn on the page), but is capable of pivoting into and out of the page.
  • Fig. 4 is a diagram showing use of the dutch shown in Figs 1 to 3.
  • the precast concrete panel 40 being lifted has edge anchors 42 to which clutch head portions 44 are attached.
  • the shackle portions 46 of the clutches are pivotaily connected to the head portions 44 thereby allowing sideways movement of the shackles 46 (as drawn on the page).
  • the shackles 46 are connected to lifting cables 48.
  • Art equaliser pulley 50 is provided to predominantly to distribute load evenly across the two anchors, and as a secondary consideration to ensure no tilting of the panel 40 while lifting.
  • the direction of lifting (upwards as drawn on the page) is shown by the arrow 52.
  • the ability for the shackles 46 to pivot only along the long axis of the panel 40 ensures that the shackles correctly align in the direction of the lifting slings 48 applying load.
  • the angle of lift between the two slings 48 below the equalising block is constantly varying based on the distance between the two lift anchors 42 and length of lifting sling 48 running through the equalising block 50. Accordingly it is desirable for the clutch shackle 46 to be able to move along the longitudinal axis of the panel 40 so as to align the shackle in the same alignment as the sling 48 applying lift load to the clutch shackle 46.
  • FIG. 5 to 7 show alternative clutches of the present invention, relying on spatial interference to limit movement of the clutch head 40 and clutch shackle 42 relative to each other.
  • Fig, 5 shows a clutch having a semi-annular protrusion 44 on the clutch head 40.
  • the shackle 42 rotates within the clutch head to a approximately a 90 degree position or any other angle as required to prevent the shackle contacting the element edge which is dependent on clutch head design, shackle length and size of hole in the clutch head, it is prevented from rotating further as the shackie 42 contacts the protrusion 44.
  • the shackle 42 cannot therefore over rotate about the clutch head 40 and foul against the precast panel edge.
  • the embodiment of Fig. 5 allows some rotation of the shackle across the centra! axis of the clutch head. However, as will be clear from the foregoing this rotation is limited such that the clutch head cannot rotate far enough around the axis to come into contact with or foul the edge of the precast panel.
  • the embodiment of Fig. 6 is similar to that of Fig. 5 in that some rotation of the shackle 42 is allowed around the central axis of the clutch head 40 by way of the semi-annular protrusion 44. However, the embodiment includes planar extensions 46 about the central region of the shackle 42, the extensions 46 being configured to contact with the protrusion 44 to prevent further rotation,
  • the embodiment of Fig. 7 is similar to that of Fig. ⁇ having the semi-annular protrusion 44 and planar extensions 46 but does not allow any rotation across the axis of the clutc head 40,

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

L'invention concerne un dispositif d'enclenchement de levage servant à des fins de levage d'éléments en béton préfabriqué (tels des panneaux de construction) et similaires. Le dispositif d'enclenchement de levage est configuré de sorte que, lors de l'utilisation, le dispositif d'enclenchement est sensiblement incapable d'entrer en contact avec une zone de surface de bord et/ou surface de face d'un panneau en béton avec lequel le dispositif d'enclenchement est mis en prise. Par le biais de cet agencement, dans des situations de levage par le bord, le dispositif d'enclenchement évite d'entrer en contact avec la face de bord lors du levage, en particulier quand l'élément en béton préfabriqué est soulevé depuis l'horizontale de préfabriqué jusqu'à la verticale.
PCT/AU2014/050169 2013-08-02 2014-08-02 Dispositif d'enclenchement de levage WO2015013773A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2013902903A AU2013902903A0 (en) 2013-08-02 Lifting clutch
AU2013902903 2013-08-02

Publications (1)

Publication Number Publication Date
WO2015013773A1 true WO2015013773A1 (fr) 2015-02-05

Family

ID=52430768

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2014/050169 WO2015013773A1 (fr) 2013-08-02 2014-08-02 Dispositif d'enclenchement de levage

Country Status (1)

Country Link
WO (1) WO2015013773A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371951A (en) * 1966-12-19 1968-03-05 John G. Bryant Material handling fittings
US3499676A (en) * 1967-06-13 1970-03-10 Ernst Haeussler System for manipulating concrete bodies
FR2651521A1 (fr) * 1989-09-05 1991-03-08 Ho Dac Tinh Crochet a bascule pour le levage de charges, tel qu'un element en beton avec anorage noye.
US5624147A (en) * 1993-08-12 1997-04-29 Arteon; Marcel Lifting ring
WO2008154673A1 (fr) * 2007-06-21 2008-12-24 Woodstock Percussion Pty Ltd Ensemble liaison amovible pour levage
AU2012247081A1 (en) * 2011-11-17 2013-06-06 Illinois Tool Works Inc. Lifting systems for concrete components

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371951A (en) * 1966-12-19 1968-03-05 John G. Bryant Material handling fittings
US3499676A (en) * 1967-06-13 1970-03-10 Ernst Haeussler System for manipulating concrete bodies
FR2651521A1 (fr) * 1989-09-05 1991-03-08 Ho Dac Tinh Crochet a bascule pour le levage de charges, tel qu'un element en beton avec anorage noye.
US5624147A (en) * 1993-08-12 1997-04-29 Arteon; Marcel Lifting ring
WO2008154673A1 (fr) * 2007-06-21 2008-12-24 Woodstock Percussion Pty Ltd Ensemble liaison amovible pour levage
AU2012247081A1 (en) * 2011-11-17 2013-06-06 Illinois Tool Works Inc. Lifting systems for concrete components

Similar Documents

Publication Publication Date Title
EP2347067B1 (fr) Dispositif et procede de levage pour elements en beton
US8434801B2 (en) Flange lifter device
US8959847B2 (en) Method and apparatus for attaching temporary lifting members to an existing lifting anchor
EP2165029B1 (fr) Ensemble liaison amovible pour levage
US20100192484A1 (en) Joining system for two building elements
CN110528390B (zh) 临近既有线狭窄空间架设t梁施工方法
JP5814661B2 (ja) 鋼材の吊り装置
CN108086697B (zh) 一种预埋件吊装精准定位装置及吊装精准定位方法
JP5731311B2 (ja) コンクリートブロックの吊上げ用治具
WO2015013773A1 (fr) Dispositif d'enclenchement de levage
JP7021985B2 (ja) 鉄骨工事における仮ボルト不要接合装置及び接合工法
JP4795224B2 (ja) コンクリート製品の位置合わせ治具及びこれを用いた組み立て方法
JP2007145509A (ja) 簡易ブーム装置
RU2751379C1 (ru) Грузозахватное устройство
AU2012247081B2 (en) Lifting systems for concrete components
JP6739788B2 (ja) 吊上用金具
RU2754013C1 (ru) Башенный кран
JP4795865B2 (ja) コンクリートブロック用吊上具
JP3084895U (ja) コンクリート製マンホール塊の位置合わせ装置
CN211619754U (zh) 一种钢板吊装卡具
WO2012017979A1 (fr) Goupille destinée à transporter une plaque cintrée externe
KR200186854Y1 (ko) 클로버 리프 소켓용 블럭형 리프팅 후크
KR20140000262U (ko) 버터플라이밸브 설치용 지그
KR200407470Y1 (ko) 전기 판넬 이송 시 변형 방지를 위한 이송용 체인 지그
GB2355034A (en) Subsea structure

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14831464

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14831464

Country of ref document: EP

Kind code of ref document: A1