WO2005042876A1 - A lifting assembly for a shutter to allow continuous casting - Google Patents

A lifting assembly for a shutter to allow continuous casting Download PDF

Info

Publication number
WO2005042876A1
WO2005042876A1 PCT/AU2004/001497 AU2004001497W WO2005042876A1 WO 2005042876 A1 WO2005042876 A1 WO 2005042876A1 AU 2004001497 W AU2004001497 W AU 2004001497W WO 2005042876 A1 WO2005042876 A1 WO 2005042876A1
Authority
WO
WIPO (PCT)
Prior art keywords
shutter
support frame
lifting assembly
hoist
respect
Prior art date
Application number
PCT/AU2004/001497
Other languages
French (fr)
Inventor
Paul Brazis
Rudiger Totsenberger
Emilio Rosati
Original Assignee
Formula One Self Driving Screens 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 AU2003905947A external-priority patent/AU2003905947A0/en
Application filed by Formula One Self Driving Screens Pty Ltd filed Critical Formula One Self Driving Screens Pty Ltd
Priority to AU2004285987A priority Critical patent/AU2004285987B2/en
Priority to NZ546333A priority patent/NZ546333A/en
Publication of WO2005042876A1 publication Critical patent/WO2005042876A1/en

Links

Classifications

    • 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
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
    • E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
    • E04G11/22—Sliding forms raised continuously or step-by-step and being in contact with the poured concrete during raising and which are not anchored in the hardened concrete; Arrangements of lifting means therefor
    • E04G11/24—Construction of lifting jacks or climbing rods for sliding forms

Definitions

  • This invention relates to both an arrangement and a means for lifting f ormwork or shutters during construction of a building.
  • Modern construction of buildings normally comprises stage by stage pouring of concrete to form columns and floors. Such construction techniques will be known to a skilled addressee of this specification.
  • the invention is a lifting assembly comprising a support frame, a shutter slidably engaged to said support frame, and a hoist operatively connected between said support frame and shutter to cause movement of said shutter with respect to said support frame where, in use, when said support frame is fixed, operation of said hoist causes movement of said shutter and when said shutter is fixed, operation of said hoist causes movement of said support frame.
  • the hoist comprises a hoist means and a hoist actuator operatively engaged to the hoist means.
  • the lifting assembly is used in a multi storey building and the support frame can extend over a number of levels including floors yet to be constructed in the building.
  • the shutter is preferably used to manufacture vertically extending walls, and can be used to cast a portion of the wall whereupon it can then be lifted to cast the next portion of the wall directly on that portion cast below. In this way, the wall can be continuously formed in a vertical direction by progressive movement of the shutter.
  • This invention enables a structure such as a wall to be formed prior to other components, such as floors, being cast in place. Apertures are formed in the floor either side of the structure being formed to allow the support frame to extend between floors. These apertures can later be infilled once the support frame is lifted clear of the floor.
  • Supports may be used to hold both the support frame or the shutter in relation to a support surface such as a lower floor. In this way, when the support frame is held, the shutter can be lifted by the hoist means in relation to the support frame. Alternately, when the shutter is supported, the support frame can be lifted by the hoist means with respect to the shutter. In this way, the shutter can be continuously lifted upwardly as the building is being constructed.
  • Figure 1 shows a plan view of the lifting arrangement
  • Figure 2 shows a side view of the lifting arrangement
  • Figures 3 to 5 show a lifting sequence of the arrangement
  • Figure 6 shows detail of an attachment bracket.
  • Figure 1 shows a plan view of the lifting arrangement. It includes a support frame or a main frame that comprises columns 10. Each column 10 is a pair of C-shaped channels that are held back to back. Four columns 10 are provided and a shutter 11 is positioned between them. In this embodiment, the shutter 11 is used to form a vertical wall where the width and thickness of the wall is defined by the shutter 11. The shutter 11 has means whereby the shuttering can be stripped from the wall that is formed once the concrete is set. This stripping process ensures that all concrete forming surfaces are released or pulled away to enable the shutter 11 to slide vertically over the wall that is formed.
  • the shutter 11 is attached to the columns 10 by brackets 12 that are illustrated in
  • the brackets 12 are approximately 2 meters in lengths and have flanges 13 that locate over the walls of the two C-shaped beams that form the columns 10. This retains the bracket 12 with respect to the column 10 and enables it to slide vertically along the columns 10.
  • Figure 1 also shows a motor beam 15 that is secured to the shutter 11 between adjacent columns 10.
  • the motor beam 15 carries an electric motor 16 that drives a pair of screw jacks 17 which are both mounted on the motor beam 15. The operation of the screw jacks will be described below.
  • the electric motor 16 drives the screw jacks via a reduction gearbox attached to electric motor 16 and output drive shafts 18.
  • Figure 2 shows a side view of the arrangement shown in Figure 1.
  • the columns 10 extend over several floors of the building some of which are yet to be constructed.
  • level A shows a constructed floor whereas levels B, C and D are yet to be constructed.
  • the shutter 11 is forming a vertical wall that is to extend vertically through the floors of the building.
  • Each motor beam is operatively engaged to a hoist means which in this embodiment comprises worm screw shafts 20.
  • a pair of shafts 20 are provided with each motor beam 15 and are threadably engaged through the screw jacks 17 which comprise the hoist actuator.
  • the hoist means may comprise an elongate tooth rack with a hoist actuator comprising a driven gear.
  • the hoist means comprises an elongate screw shaft 20 and the hoist actuators are screw jacks 17.
  • the screw shafts 20 are connected at their upper ends to the columns 10.
  • the lower end of the screw shaft 20 is also connected to the columns 10. In this way, the shutter 11 is supported by the motor beam 15 with the screw shaft 20 above the motor beam 15 being placed in tension.
  • FIGs 3 to 5 show, in sequence, the operation of the lifting arrangement.
  • level A represents a floor which has already been poured.
  • the lower ends of the columns 10 are below the floor at level A and supported at the floor below.
  • the shutter 11 is being used to form a wall 22.
  • the wall 22 already extends above level C and the last section of the wall has just been cast in the shutter 11.
  • the shutter 11 is also supported by props 23 that are attached to the lower edge of the shutter 11 and are secured to the floor at level A. At least 4 props 23 are used.
  • the lifting assembly is also stabilised by the formwork 11 which surrounds at its lower edge the wall 22 and so abuts against that portion of the wall 22 within the formwork 11 prior to casting and the whole wall 22 after casting.
  • Figure 4 shows the columns 10 after they have been lifted to the next casting position. From this position the shutter 11 can then form the rest of the wall 22 between level C and D and a portion of the wall 22 above level D.
  • the floor at level B has been poured and apertures around each of the columns 10 adjacent wall 22 are formed in the floor when level B is poured. After the columns 10 are lifted out of the way, these apertures can be closed by infill. However, the apertures in the floor of level B enable the columns 10 to extend below level B into the space above level A.
  • the props 26 are re-positioned on level B once the floor is set.
  • the apertures adjacent wall 22 on level A are infilled and props 27 are used to support the columns 10 in relation to level A. Another portion of the wall 22 is then cast in the shutter 11.
  • the columns 10 and shutter 11 can work their way up the height of a building to form the wall 22.
  • working platforms can be positioned on the top of the shutter 11. This provides convenient access for workmen pouring concrete into the shutter 11.
  • the invention provides a means and method whereby a wall 22 can be formed well in advance of floors that can then be formed below. This means that the construction of the wall 22 is continuing above the formwork that is being used to cast the floors of the building. Accordingly, there is no delay as is the case with existing construction techniques where a floor needs to be finished before formwork can be placed to construct the vertical wall.
  • the invention also allows large wall forming shutters to be lifted without the need to use a crane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

This invention relates to a lifting assembly which comprises a support frame (10), a shutter (11) slidably engaged to the support frame (10) and a hoist (15, 20) operatively connected between the support frame (10) and the shutter (11) to cause movement of the shutter (11) with respect to the support frame (10) where, in use, when the support frame (10) is fixed, operation of the hoist causes movement of the shutter (11) and when the shutter (11) is fixed, operation of the hoist causes movement of the support frame (10). The invention is suited to the continuous casting of a structure by the shutter as it provides means for separately and independently moving the shutter (11) in relation to the support frame (10) or moving the support frame (10) in relation to a stationary shutter (11).

Description

A LIFTING ASSEMBLY FOR A SHUTTER TO ALLOW CONTINUOUS CASTING
This invention relates to both an arrangement and a means for lifting f ormwork or shutters during construction of a building.
Modern construction of buildings normally comprises stage by stage pouring of concrete to form columns and floors. Such construction techniques will be known to a skilled addressee of this specification.
In addition to constructing columns and floors, it is often a requirement to construct internal or peripheral walls that extend vertically through all or of part of the building structure. Such walls are constructed using ordinary f ormwork or shuttering techniques. However, the construction of shuttering for such walls cannot commence until access is provided to a new floor and this does not occur until the floor is poured and finished. The shuttering then needs to be assembled and positioned on each floor using a crane and then disassembled to move to the next level. This is obviously a time consuming process.
It is an object of this invention to provide an alternate means for positioning structure forming shuttering which is more efficient and less ti e consuming than the current construction techniques.
In one aspect, the invention is a lifting assembly comprising a support frame, a shutter slidably engaged to said support frame, and a hoist operatively connected between said support frame and shutter to cause movement of said shutter with respect to said support frame where, in use, when said support frame is fixed, operation of said hoist causes movement of said shutter and when said shutter is fixed, operation of said hoist causes movement of said support frame.
Preferably, the hoist comprises a hoist means and a hoist actuator operatively engaged to the hoist means.
Preferably, the lifting assembly is used in a multi storey building and the support frame can extend over a number of levels including floors yet to be constructed in the building. The shutter is preferably used to manufacture vertically extending walls, and can be used to cast a portion of the wall whereupon it can then be lifted to cast the next portion of the wall directly on that portion cast below. In this way, the wall can be continuously formed in a vertical direction by progressive movement of the shutter.
This invention enables a structure such as a wall to be formed prior to other components, such as floors, being cast in place. Apertures are formed in the floor either side of the structure being formed to allow the support frame to extend between floors. These apertures can later be infilled once the support frame is lifted clear of the floor.
Supports may be used to hold both the support frame or the shutter in relation to a support surface such as a lower floor. In this way, when the support frame is held, the shutter can be lifted by the hoist means in relation to the support frame. Alternately, when the shutter is supported, the support frame can be lifted by the hoist means with respect to the shutter. In this way, the shutter can be continuously lifted upwardly as the building is being constructed.
In order to fully understand the invention, a preferred embodiment is described below. However, the invention is not limited to the precise combination of the elements described in this embodiment and other aspects of the invention will be apparent from the description.
This embodiment is illustrated in the following drawings in which: Figure 1 shows a plan view of the lifting arrangement, Figure 2 shows a side view of the lifting arrangement, Figures 3 to 5 show a lifting sequence of the arrangement, and Figure 6 shows detail of an attachment bracket.
Figure 1 shows a plan view of the lifting arrangement. It includes a support frame or a main frame that comprises columns 10. Each column 10 is a pair of C-shaped channels that are held back to back. Four columns 10 are provided and a shutter 11 is positioned between them. In this embodiment, the shutter 11 is used to form a vertical wall where the width and thickness of the wall is defined by the shutter 11. The shutter 11 has means whereby the shuttering can be stripped from the wall that is formed once the concrete is set. This stripping process ensures that all concrete forming surfaces are released or pulled away to enable the shutter 11 to slide vertically over the wall that is formed.
The shutter 11 is attached to the columns 10 by brackets 12 that are illustrated in
Figure 6. The brackets 12 are approximately 2 meters in lengths and have flanges 13 that locate over the walls of the two C-shaped beams that form the columns 10. This retains the bracket 12 with respect to the column 10 and enables it to slide vertically along the columns 10.
Figure 1 also shows a motor beam 15 that is secured to the shutter 11 between adjacent columns 10. The motor beam 15 carries an electric motor 16 that drives a pair of screw jacks 17 which are both mounted on the motor beam 15. The operation of the screw jacks will be described below. The electric motor 16 drives the screw jacks via a reduction gearbox attached to electric motor 16 and output drive shafts 18.
Figure 2 shows a side view of the arrangement shown in Figure 1. The columns 10 extend over several floors of the building some of which are yet to be constructed. In Figure 2, level A shows a constructed floor whereas levels B, C and D are yet to be constructed. The shutter 11 is forming a vertical wall that is to extend vertically through the floors of the building.
Each motor beam is operatively engaged to a hoist means which in this embodiment comprises worm screw shafts 20. A pair of shafts 20 are provided with each motor beam 15 and are threadably engaged through the screw jacks 17 which comprise the hoist actuator.
A number of different hoist means and hoist actuators may be used. For example, the hoist means may comprise an elongate tooth rack with a hoist actuator comprising a driven gear. However, in this embodiment, the hoist means comprises an elongate screw shaft 20 and the hoist actuators are screw jacks 17.
The screw shafts 20 are connected at their upper ends to the columns 10. The lower end of the screw shaft 20 is also connected to the columns 10. In this way, the shutter 11 is supported by the motor beam 15 with the screw shaft 20 above the motor beam 15 being placed in tension.
With the columns 10 fixed, operation of the electric motor 16 in one direction drives the motor beam 15 and the shutter 11 upwardly along the screw shafts 20. This lifts the shutter 11 with respect to the columns 10.
Figures 3 to 5 show, in sequence, the operation of the lifting arrangement. In Figure 3, level A represents a floor which has already been poured. The lower ends of the columns 10 are below the floor at level A and supported at the floor below. The shutter 11 is being used to form a wall 22. The wall 22 already extends above level C and the last section of the wall has just been cast in the shutter 11.
The shutter 11 is also supported by props 23 that are attached to the lower edge of the shutter 11 and are secured to the floor at level A. At least 4 props 23 are used. The lifting assembly is also stabilised by the formwork 11 which surrounds at its lower edge the wall 22 and so abuts against that portion of the wall 22 within the formwork 11 prior to casting and the whole wall 22 after casting.
Figure 4 shows the columns 10 after they have been lifted to the next casting position. From this position the shutter 11 can then form the rest of the wall 22 between level C and D and a portion of the wall 22 above level D.
In Figure 4, the floor at level B has been poured and apertures around each of the columns 10 adjacent wall 22 are formed in the floor when level B is poured. After the columns 10 are lifted out of the way, these apertures can be closed by infill. However, the apertures in the floor of level B enable the columns 10 to extend below level B into the space above level A. The props 26 are re-positioned on level B once the floor is set. The apertures adjacent wall 22 on level A are infilled and props 27 are used to support the columns 10 in relation to level A. Another portion of the wall 22 is then cast in the shutter 11.
In the position shown in Figure 5 it is not possible to lift the shutter 11 without first lifting the columns 10. In order to achieve this, props 23 are attached to shutter 11 at points 24. With the shutter 11 held in place by the props 23, the electric motors 16 can be operated in reverse so that the columns 10 are lifted. Skids 25 abut against the wall 22 and stabilise the columns 10 as they are lifted. The columns 10 are lifted through the apertures in the floor at level B and once they are above level B floor, then the props 26 and 27 are again attached to the columns 10 to allow the shutter 11 to be raised to its new position.
In this manner, the columns 10 and shutter 11 can work their way up the height of a building to form the wall 22.
As seen in Figures 2 to 5, working platforms can be positioned on the top of the shutter 11. This provides convenient access for workmen pouring concrete into the shutter 11.
The invention provides a means and method whereby a wall 22 can be formed well in advance of floors that can then be formed below. This means that the construction of the wall 22 is continuing above the formwork that is being used to cast the floors of the building. Accordingly, there is no delay as is the case with existing construction techniques where a floor needs to be finished before formwork can be placed to construct the vertical wall. The invention also allows large wall forming shutters to be lifted without the need to use a crane.

Claims

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:
1. A lifting assembly comprising; a support frame a shutter slidably engaged to said support frame, a hoist means extending vertically and held with respect to said support frame, and a hoist actuator mounted on said shutter, said hoist actuator operatively engaging said hoist means to cause movement of said shutter with respect to said support frame where, in use, when said support frame is fixed, operation of said hoist actuator causes movement of said shutter and when said shutter is fixed, operation of said hoist actuator causes movement of said support frame.
2. A lifting assembly according to claim 1 wherein said support frame comprises a plurality of columns.
3. A lifting assembly according to claim 2 wherein there are four columns; two on either side of said shutter and located adjacent the outer edges of said shutter.
4. A lifting assembly according to any one of the preceding claims wherein said hoist means comprises a screw shaft.
5. A lifting assembly according to claim 3 wherein said hoist means comprises a screw shaft attached to each of said columns.
6. A lifting assembly according to claim 4 wherein said hoist actuator comprises a screw jack that engages and rotates with respect to said screw shaft.
7. A lifting assembly according to claim 5 further comprising a beam secured to either side of said shutter with a screw jack at each end of each said beam each engaging and rotating with respect to one of each said screw shafts.
8. A lifting assembly according to any one of the preceding claim used for forming a wall extending vertically across 2 or more floors of a building.
9. A lifting assembly according to claim 8 wherein said shutter is fixed with respect to a floor of said building by a plurality of struts to allow said support frame to move upwardly with respect to said shutter.
10. A lifting assembly according to claim 8 wherein said support frame is fixed with respect to a floor of said building by a plurality of struts to allow said shutter to move upwardly with respect to said shutter.
11. A lifting assembly comprising; a support frame, a shutter slidably engaged to said support frame, and a hoist operatively connected between said support frame and shutter to cause movement of said shutter with respect to said support frame where, in use, when said support frame is fixed, operation of said hoist causes movement of said shutter and when said shutter is fixed, operation of said hoist causes movement of said support frame.
12. A lifting assembly substantially as hereinbefore described with reference to the accompanying drawings.
PCT/AU2004/001497 2003-10-29 2004-10-29 A lifting assembly for a shutter to allow continuous casting WO2005042876A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2004285987A AU2004285987B2 (en) 2003-10-29 2004-10-29 A lifting assembly for a shutter to allow continuous casting
NZ546333A NZ546333A (en) 2003-10-29 2004-10-29 A lifting assembly for a shutter to allow continuous casting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2003905947 2003-10-29
AU2003905947A AU2003905947A0 (en) 2003-10-29 An arrangment and means of lifting formwork during construction of the building

Publications (1)

Publication Number Publication Date
WO2005042876A1 true WO2005042876A1 (en) 2005-05-12

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ID=34528644

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2004/001497 WO2005042876A1 (en) 2003-10-29 2004-10-29 A lifting assembly for a shutter to allow continuous casting

Country Status (3)

Country Link
CN (1) CN100451274C (en)
NZ (1) NZ546333A (en)
WO (1) WO2005042876A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009127007A1 (en) * 2008-04-17 2009-10-22 Grocon Pty Limited Climbing mast assembly
CN102383599A (en) * 2011-10-14 2012-03-21 中国十九冶集团有限公司 Concrete wall pouring method and special mould
US10077564B1 (en) * 2017-02-24 2018-09-18 Doka Gmbh Method for erecting a concrete structure and climbing formwork
CN109262850A (en) * 2018-08-15 2019-01-25 江苏中南建设装饰有限公司 A kind of in-house operation post-install punch device and its construction method
US11136769B2 (en) * 2017-06-02 2021-10-05 James Zitting System and method for automating vertical slip forming in concrete construction

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103132692B (en) * 2013-03-12 2015-09-02 山东天齐置业集团股份有限公司 A kind of tilted cylinder erecting device and mold method
CN112160587B (en) * 2020-10-09 2022-05-27 浙江省二建建设集团有限公司 Slip form construction equipment and construction method for building outer wall and floor slab
CN113417455B (en) * 2021-06-09 2022-07-26 中交第四航务工程局有限公司 Self-reinforcing supporting rod for slip form construction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628223A (en) * 1970-05-11 1971-12-21 Alexander Babee Climbing concrete form hoist
GB2098654A (en) * 1981-05-19 1982-11-24 Form Scaff Holdings Building construction
AU607139B2 (en) * 1986-06-03 1991-02-28 Waco Kwikform Pty. Limited Hydraulic self climbing formwork
US5263835A (en) * 1989-02-08 1993-11-23 Lubeca Construction Systems Pty. Ltd. Building construction system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628223A (en) * 1970-05-11 1971-12-21 Alexander Babee Climbing concrete form hoist
GB2098654A (en) * 1981-05-19 1982-11-24 Form Scaff Holdings Building construction
AU607139B2 (en) * 1986-06-03 1991-02-28 Waco Kwikform Pty. Limited Hydraulic self climbing formwork
US5263835A (en) * 1989-02-08 1993-11-23 Lubeca Construction Systems Pty. Ltd. Building construction system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009127007A1 (en) * 2008-04-17 2009-10-22 Grocon Pty Limited Climbing mast assembly
CN102383599A (en) * 2011-10-14 2012-03-21 中国十九冶集团有限公司 Concrete wall pouring method and special mould
US10077564B1 (en) * 2017-02-24 2018-09-18 Doka Gmbh Method for erecting a concrete structure and climbing formwork
US10392818B2 (en) 2017-02-24 2019-08-27 Doka Gmbh Climbing formwork for erecting a concrete structure
US11136769B2 (en) * 2017-06-02 2021-10-05 James Zitting System and method for automating vertical slip forming in concrete construction
CN109262850A (en) * 2018-08-15 2019-01-25 江苏中南建设装饰有限公司 A kind of in-house operation post-install punch device and its construction method

Also Published As

Publication number Publication date
CN100451274C (en) 2009-01-14
CN1875156A (en) 2006-12-06
NZ546333A (en) 2010-01-29

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