WO2008147174A1 - Formwork supporting system - Google Patents
Formwork supporting system Download PDFInfo
- Publication number
- WO2008147174A1 WO2008147174A1 PCT/MY2008/000049 MY2008000049W WO2008147174A1 WO 2008147174 A1 WO2008147174 A1 WO 2008147174A1 MY 2008000049 W MY2008000049 W MY 2008000049W WO 2008147174 A1 WO2008147174 A1 WO 2008147174A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formwork
- supporting system
- pivotable
- prop
- height
- Prior art date
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
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
- E04G19/003—Arrangements for stabilising the forms or for moving the forms from one place to another
-
- 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
-
- 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
- E04G25/00—Shores or struts; Chocks
- E04G25/02—Shores or struts; Chocks non-telescopic
Definitions
- the present invention relates to a formwork supporting system for building construction. More particularly, the present invention relates to a formwork supporting system which provides efficiency in installation and extrication of formwork in situ.
- beam and floor formworks can not be lifted out vertically from under the floor, it must be first lowered and then transported either to a new position on the same floor or lifted by manpower to a new position on the next floor.
- a fork-lift truck for this operation, but generally a formwork support system that is easier to assemble and mobile would be more favoured for this work.
- An example of mobile plant for floor and beam formworks which has been used and still in use now, is hydraulic platforms on wheels.
- This platform is normally constructed in steel with two frames, one above the other and joined with a scissor-operating mechanism which acts as the frame bracing structure. Furthermore, it allows the upper frame to be moved under the table formwork, and raised or lowered the table formwork by hydraulic means.
- There is another version of this mobile plant which uses a ratchet device instead of hydraulic arms. This device can also be constructed so that it is telescopic in the length direction.
- the disadvantage with this type of platform is that it can only be used for table formwork when the supporting structure has been removed. If the supporting structures remain intact with the table formwork, a wheeled transport frame can be used.
- This frame is constructed in a way that it can be quickly and conveniently fitted to the supporting structure of a table formwork, one frame at each end. After retraction of the feet to the supporting structure, the whole table with supports can easily be moved on the supporting structure wheels to the required position.
- mobile transporting wheels which have a quick-locking device for clamping to the vertical element of the supporting structure and may be extended in height by the use of intermediate pieces. They can be raised or lowered either by means of ratchets or hydraulically and it can be fitted with a set of two smaller rollers for individual mobility.
- a fixed transporting wheel can be used to replace the mobile wheel mentioned previously.
- These fixed wheels remain on the supporting structure of the table formwork at each corner, so that the formwork unit is mobile at all times.
- the important feature here is that although the plant costs are a little higher, this is more than outweighed by the advantage of lesser labour costs in fitting the wheels and dismantling them with each use. Further, the formwork is more easily moved and corrected when erecting and striking.
- the formwork supporting system comprises supporting means to support a formwork, the supporting means having a support frame, a height-adjustable member, and height-adjusting means and transporting means.
- the height-adjustable member at the top hoists the formwork meanwhile the positioning of the height- adjustable member is manipulated by the height-adjusting means.
- the formwork support system is capable of efficiently supporting the elevation, dismantlement and thus reusability of the supported formwork. Utilization of the formwork supporting system retains the original condition of the supported formwork, therefore ensuring the formwork is reusable for the proceeding constructions.
- the formwork supporting system eases the transportation of the formwork prior and after a construction.
- a formwork supporting system further comprises a plurality of pivotable props mountable to the underneath of the formwork, the pivotable props each comprises of an upper prop, a lower prop, a foldable connector detachably mounted between the upper prop and the lower prop, and transporting means mounted to the foldable connector.
- the lower prop is capable of being pivoted and a locking pin can be unfastened to enable the lower prop to be folded upwards when necessary.
- the floor and beam form works are designed and assembled as one unit.
- the floor and beam formworks are mountable on a plurality of fixed bases with the pivotable props being installed at the bottom thereof.
- the platform of the formwork supporting system Prior to the construction of a concrete structure, the platform of the formwork supporting system would be hoisted up to the soffit of the formwork by using height-adjusting means. After the completion of the construction, once the platform has firmly attached to the formwork, the pivotable props are loosen up and folded upwards. Next, the formwork supporting system would lower down the platform by slowly releasing the chain block. It is an object of the present invention to provide a formwork supporting system which comprises supporting means capable of temporarily hoisting the formwork before the pivotable props are unfolded into upright position.
- Figure 1 is an elevation view of the present supporting means.
- Figure 2a is another elevation view of the supporting means.
- Figure 2b is an elevation view of the cross section of the height- adjustable member.
- Figure 3 is an elevation view of the pivotable prop.
- Figure 4 is an elevation view of the pivotable prop being rotated at the connector.
- Figure 5 is a cross sectional view of the pivotable prop at the connector section.
- Figure 6 is a side view of the pivotable prop.
- Figure 7 is an elevation view of the pivotable prop.
- the present invention relates to a formwork supporting system (100). More particularly, the present invention relates to a formwork supporting system (100) which provides efficiency in installation and extrication of formwork in situ.
- a formwork supporting system (100) shall be described according to the preferred embodiments of the present invention and by referring to the accompanying description and drawings.
- the present formwork supporting system (100) is known comprising of supporting means (90) to support the formwork and a plurality of pivotable props (95) mountable to the underneath of the formwork for convenient transportation of the supported formwork.
- the supporting means (90) comprising a support frame (10), a height-adjustable member, height-adjusting means and transporting means.
- a retaining member preferably a hollow shaft (35) vertically mounted at an intermediate position height-wise of the support frame (10).
- the hollow shaft (35) would function conveniently to retain the height- adjustable member.
- the height-adjustable member is provided in a series of telescopic posts (40).
- the telescopic posts (40) each are slidably connected to one another.
- Each of the posts (40) has different cross sections. To slidably connect all the telescopic posts (40), it would be essential that the cross sectional size of the bottommost telescopic post (40a) to have the largest size and the size gradually decreases to the smallest size at the topmost telescopic post (40b).
- the telescopic post (40) disposed relatively at a upper position would have a relatively small cross sectional area and said telescopic post (40) would be telescopically received in the telescopic post (40) disposed relatively at lower position that has a relatively large cross sectional area.
- the telescopic connection of the telescopic posts (40) in accordance to the description would inherently form an extensible shaft, that is capable of being slidably adjusted according to a preferred height.
- the telescopic post at the bottommost (40a) position having relatively small cross sectional area is telescopically received in a retaining manner into the hollow shaft (35) which has a relatively large cross sectional area.
- a platform (50) adapted as a holding structure for supporting the underneath of the supported formwork.
- the hollow shaft (35) is provided with a plurality of perforations (43) formed along the height-wise extent of the shaft (35) will be hereinafter described in greater detail.
- the telescopic posts (40) each are provided with a plurality of perforations (42) formed along the height- wise of the posts will be hereinafter described in greater detail.
- the support frame (10) is conveniently equipped with height-adjusting means to adjust the platform (50) at a desired height.
- a chain block (45) which acts as the height-adjusting means may be braced at the top portion (10b) of the support frame (10).
- the telescopic posts (40) each at the bottom portion are provided with attaching means (55) and a through bore (57) is formed thereon.
- the through bore (57) is formed essentially to be attached to the chain (47) of the chain block (45).
- the chain block (45) may be a hand operated hoisting appliance, whereby when the chain (47) is attached to the attaching means (55) of the corresponding telescopic post (40), the platform (50) can be hoisted upwards and downwards conveniently.
- a passage (41) is essentially formed from the top end and terminates approximately at the bottom end of each of the telescopic posts (40) except the topmost telescopic post (40b) to accommodate the sliding of the attaching means (55) along the the sliding of the attaching means (55) of the relatively inner telescopic post (40) along the passage (41) of the relatively outer telescopic post (40).
- a user is required to firstly attach the chain (47) to the outermost telescopic post (40) through said through bore (57) and haul the chain (47) till the platform (50) is hoisted to a desired height.
- engaging means preferably in the form of a pin or any other locking fastener is releasably secured through the perforation (42) formed on the telescopic post (40) in which said locking fastener also secures through corresponding perforations (42 & 43) of the inner telescopic posts (40) and the perforation (43) of the hollow shaft (35) to lock the telescopic post (40) in position.
- the platform (50) height can be therefore adjusted according to the desired height and locked to the height by fastening the pin. If the first outermost telescopic post (40) is extended to its maximum height, the user could unfasten the locking fastener which locks the first telescopic post (40) and detach the chain (47) from the attaching means (55) of said first telescopic post (40). then attach said chain (47) to a second inner telescopic post (40) which is slidably connected to the first telescopic post (40). The user could haul the chain (47) again to further elevate the platform (50) and upon reaching the desired height, secure the fastener again in similar manner as aforementioned.
- Further elevation of the platform (50) may be performed using the same method as the subsequent telescopic posts (40).
- the user To hoist down the platform (50), the user must unlock the locking fastener first and release the chain (47) wherein the chain (47) is still attached to the attaching means (55) of the attached telescopic post (40).
- the chain block (45) enables the supported formwork to be gradually elevated and lowered to ensure more safety.
- Other form of height-adjusting means may also be used such as hydraulic or any other motorized means capably to ascend and descend the platform (50).
- a plurality of wheels (60) acting as the transportable means is attached at the bottom portion (10a) below the support frame (10). Beneath the support frame (10), preferably at least four wheels (60) are attached at each corner for moving the support frame (10) from one area to another. These wheels (60) may be locked in a fixed position during the operation of chain block (45).
- the formwork supporting system (100) further comprises pivotable props (95) mountable at the underneath of the formwork.
- the pivotable prop (95) is constituted of an upper prop (20), a lower prop (25), and a connector (30) detachably mounted between the upper prop (20) and the lower prop (25).
- the pivotable props (95) mounted at the corner of the formwork is conveniently comprised of transporting means mounted to the connector (30).
- the pivotable prop (95) that is mounted at the periphery other than the corner of the formwork, as well as the pivotable props (95) mounted at the innerside of the formwork may also be comprising transporting means at the connector (30) to further facilitates the mobility of the formwork supporting system (100)
- the transporting means may be essentially provided as detachable roller (75).
- the pivotables prop mounted at the corner of the formwork each having the detachable roller (75) at the connector (30) may now referred as the corner pivotable props (95a).
- the lower prop (25) is conveniently pivotable at the connector (30).
- the lower prop (25) and the connector (30) both are pivoted perpendicularly to the upper prop (20)
- the detachable roller (75) would consequently contact the ground provided that the formwork is lowered to a required position.
- the roller (75) once turned downward and touching the ground permits horizontal movement beneath the corner pivotable props (95 a) and enables the formwork to be transportable.
- the rollers (75) may be detached from the connector (30).
- pivotable props (95b) mountable at the inner and the peripheral portion of the underneath of the formwork and preferably having no transporting means being attached at the connector (30) like the corner pivotable prop (95a).
- Said pivotable prop (95b) constitutes an upper prop (20), a lower prop (25), a connector (30) detachably mounted between the upper prop (20) and the lower prop (25).
- the lower prop (25) is also conveniently pivotable at the connector (30).
- the pivotable props (95b) stand in unfolded upright position whilst during transportation of the formwork, the lower prop (25) is folded in order not to obstruct the movement of the formwork during transportation.
- pivoting means (65) is conveniently provided.
- the pivoting means (65) may be provided as a pivoting pin fastened through a perforation (32) formed at the connector (30).
- the connector (30) may be a plate having a number of through perforations (32) to be inserted with fasteners.
- a locking pin (70) is further provided to ensure the lower prop (25) is capable of being retained in an upright position when in operation or being locked in the folded position.
- CS 2a are provided whereby the locking pin (70) is inserted through locking perforations (32a).
- the pivotable prop (95) is shown in upright position and folded position. In upright position, the locking pin is secured at the shown locking perforation (32a). As for the folded position, the locking pin is secured at the other locking perforation (32b).
- Corresponding locking bores for the locking pin (70) are also formed respectively at the upper prop (20) and the lower prop (25) in order that the lower prop (25) may be secured in the upright position or the folded position as shown in Figure 7.
- the corner pivotable prop (95a) is shown being stood in an upright position.
- the lower prop (25) together with the connector (30) is shown rotating upwards.
- the upper and lower props (20 & 25) may be made of solid hard wood.
- the lower prop (25) may also be provided as a telescopic lower prop (25a) attached to the connector (30).
- the telescopic lower prop (25a) which is used for adjusting the pivotable prop (95) height to the design requirement when the props (95) are in upright position, has an adjustable collar for moving the telescopic lower prop (25 a) upwards or downwards and a retaining pin (25 b) for securing the telescopic lower prop (25a) in the required position.
- a jacking base (80) may also be provided at the bottom portion of the lower prop (25) to jack the formwork when required.
- the supporting means (90) when assembling the formwork, is placed at a predetermined location below the formwork. Normally, this predetermined location below the formwork is specified.
- the platform (50) is hoisted upwards by using the height-adjusting means to support the floor and beam formwork.
- the platform (50) may be made up of a plurality of beams forming a rectangular structure.
- the formwork may then be elevated by the height-adjusting means to be prepared for construction proceedings.
- the pivotable props (95) may then be attached to the legs or directly attached underneath the formwork. The pivotable props (95) would all be retained in upright position to support said formwork.
- the supporting means (90) may be wheeled away after the assembling preceedings. After completion of a construction, the support frame (10) is wheeled to the appropriate location beneath the form work and the platform (50) is hoisted toward the formwork base. By now, the formwork is fully supported by the supporting means (90) besides the pivotable props (95). The locking pins (70) of the pivotable props (95) are then allowed to be loosened up and the lower props (25) are folded upwards and securely locked in the folded position. This is to allow the whole formwork to be descended without any hindrance from the upright lower props (25).
- the height-adjusting means would lower down the platform (50) slowly and the floor and beam formwork on the platform (50) would also be gradually moved downward.
- the operation would be stopped once the platform (50) has reached a level where the rollers (75) of the folded corner pivotable props (95a) touch the ground.
- the rollers (95) at the bottom of the connector (30) and also the wheels (60) underneath the support frame (10) enable the floor and beam formwork to be conveniently transported any other transporting means to the next area for further usage.
- the formwork support system efficiently supports elevation, dismantlement and reusability of the supported formwork.
- the formwork supporting system is capable of retaining the original condition of the supported formwork, therefore the reuasability of a formwork is ensured for the proceeding constructions.
- the formwork supporting system also eases the transportation of the formwork prior and after a construction.
- the supported formwork can be gradually elevated and descended, thus increasing the safety within the working environment. Damages on the formwork can also be prevented as the supporting means can adjustably elevate and descend the supported formwork, so that the supported formwork would not collapse because of improper supporting.
- the formwork supporting system (100) is best suited to be utilized together with the formwork system described in another Malaysian patent with the patent application number PI20070233 that is also filed by the same inventor.
- the formwork supporting system which is featured with compact design when combined with said formwork system can inevitably enable said formwork system to be wheeled out and to be conveniently lifted by a crane regardless of the crane size. While in the foregoing specification this invention has been described in relation to certain preferred embodiments thereof and many details have been set forth for purpose of illustration, it will be apparent to those skilled in the art that the invention is susceptible to additional embodiments and that certain of the details described herein can be varied considerably without departing from the basic principles of the invention.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2008257953A AU2008257953B2 (en) | 2007-05-31 | 2008-05-30 | Formwork supporting system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI20070858 | 2007-05-31 | ||
MYPI20070858 MY143009A (en) | 2007-05-31 | 2007-05-31 | Formwork supporting system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008147174A1 true WO2008147174A1 (en) | 2008-12-04 |
Family
ID=39832303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/MY2008/000049 WO2008147174A1 (en) | 2007-05-31 | 2008-05-30 | Formwork supporting system |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2008257953B2 (en) |
MY (1) | MY143009A (en) |
WO (1) | WO2008147174A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113914620A (en) * | 2021-11-11 | 2022-01-11 | 防城港中一重工有限公司 | Method for integrally landing silo sliding-form platform |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109537497A (en) * | 2018-12-20 | 2019-03-29 | 中海外交通建设有限公司 | A kind of highway engineering construction bracket of installation easy to disassemble |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1526182A (en) * | 1967-04-11 | 1968-05-24 | Formwork table | |
CH455238A (en) * | 1967-02-17 | 1968-06-28 | Kistler Laurenz | Method and device for stripping formwork from concrete ceilings |
US4078759A (en) * | 1976-08-09 | 1978-03-14 | Alproco, Inc. | Portable decking system |
DE2703773A1 (en) * | 1977-01-29 | 1978-08-03 | Huennebeck Gmbh | Concreting formwork support post - is in two parts transversely hinged where mutual support surfaces meet |
-
2007
- 2007-05-31 MY MYPI20070858 patent/MY143009A/en unknown
-
2008
- 2008-05-30 WO PCT/MY2008/000049 patent/WO2008147174A1/en active Application Filing
- 2008-05-30 AU AU2008257953A patent/AU2008257953B2/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH455238A (en) * | 1967-02-17 | 1968-06-28 | Kistler Laurenz | Method and device for stripping formwork from concrete ceilings |
FR1526182A (en) * | 1967-04-11 | 1968-05-24 | Formwork table | |
US4078759A (en) * | 1976-08-09 | 1978-03-14 | Alproco, Inc. | Portable decking system |
DE2703773A1 (en) * | 1977-01-29 | 1978-08-03 | Huennebeck Gmbh | Concreting formwork support post - is in two parts transversely hinged where mutual support surfaces meet |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113914620A (en) * | 2021-11-11 | 2022-01-11 | 防城港中一重工有限公司 | Method for integrally landing silo sliding-form platform |
Also Published As
Publication number | Publication date |
---|---|
AU2008257953A1 (en) | 2008-12-04 |
AU2008257953B2 (en) | 2011-02-10 |
MY143009A (en) | 2011-02-14 |
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