EP3438376A1 - Appui de coffrage - Google Patents

Appui de coffrage Download PDF

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Publication number
EP3438376A1
EP3438376A1 EP17183906.1A EP17183906A EP3438376A1 EP 3438376 A1 EP3438376 A1 EP 3438376A1 EP 17183906 A EP17183906 A EP 17183906A EP 3438376 A1 EP3438376 A1 EP 3438376A1
Authority
EP
European Patent Office
Prior art keywords
support
formwork
lowering
upper support
spindle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17183906.1A
Other languages
German (de)
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Doka GmbH
Original Assignee
Doka GmbH
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
Application filed by Doka GmbH filed Critical Doka GmbH
Priority to EP17183906.1A priority Critical patent/EP3438376A1/fr
Priority to EP22159176.1A priority patent/EP4026962B1/fr
Priority to PCT/EP2018/070652 priority patent/WO2019025394A1/fr
Priority to EP18743832.0A priority patent/EP3662119B1/fr
Publication of EP3438376A1 publication Critical patent/EP3438376A1/fr
Withdrawn legal-status Critical Current

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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
    • E04G11/36—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
    • E04G25/04—Shores or struts; Chocks telescopic
    • 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
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
    • 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
    • E04G11/38—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 for plane ceilings of 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
    • 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
    • E04G11/50—Girders, beams, or the like as supporting members for forms

Definitions

  • the invention relates to a formwork support device with at least one such formwork support and with a formwork structure which is supported on the formwork support.
  • the invention relates to a method for stripping a formwork arrangement.
  • the support device has a shaft and a slide, which together form a telescope unit. Furthermore, a damping device for damping the downward movement of the slider is provided.
  • the damping device has a vertical hydraulic drive with a cylinder chamber and a piston displaceable therein, the piston engages the slider.
  • the cylinder chamber communicates via a valve arrangement with a compensation chamber.
  • a slow downward movement should be achieved.
  • the slider should be able to be raised manually with little resistance.
  • the object of the present invention is At least alleviate or eliminate individual disadvantages of the prior art.
  • the lowering device has a brake unit, which is set up to decelerate the lowering of the upper support part to a substantially constant lowering speed substantially independently of a vertical load acting on the upper support part between the support position and the Ausschalwolf.
  • the brake unit according to the invention can ensure that the lowering movement takes place from the upper support position to the lower Ausschalwolf at different vertical loads with substantially the same lowering speed.
  • the support position is set up for the support of the formwork arrangement and the concrete in a concreting process.
  • the Ausschalwolf to allow the dismantling or dismantling of formwork elements of the formwork arrangement.
  • the substantially constant lowering speed of the upper support part is preferably between 0.5 and 50, in particular between 1 and 20 millimeters per second.
  • the mentioned independence of lowering speed from vertical loads means that the lowering speed, at least at vertical loads (in addition to the self-weight of the upper support member), is at least from 200 Newton to 30,000 Newton, in particular from 100 Newton to 50,000 Newton substantially is constant.
  • This embodiment is particularly advantageous when the formwork arrangement is supported by a plurality of formwork supports according to the invention. Due to the braking unit, different vertical loads on the shuttering supports do not affect the lowering speed, so that the individual shuttering supports can be lowered uniformly in the direction of the shuttering position.
  • the location and directional indications refer to the intended condition of the formwork support in which the formwork support is in a substantially vertical position is arranged.
  • a securing element with a securing position to secure the upper support member in the support position and a release position to release the lowering of the upper support member is provided.
  • the securing element may in particular have a plug-in part, for example a plug pin or a plug clip, which is inserted in the securing position in one of a plurality of vertically spaced retaining openings of the upper support member such that the lowering of the upper support member is locked relative to the lower support member.
  • a plug-in part for example a plug pin or a plug clip
  • the lowering device is adapted to lower the upper support member by arranging the securing element in the release position independently and at a substantially constant lowering speed of the support position in the Ausschalwolf. This means that the transfer of the securing element in the release position not only releases the lowering of the upper support member but also triggers. In use, it is therefore only necessary to bring the securing element in the release position to initiate the lowering of the upper support member from the support to the Ausschalwolf. This allows a particularly simple operation of the formwork support without compromising safety.
  • the brake unit has a preferably hydraulic linear damper, in particular a cylinder-piston damper.
  • This linear damper is adapted to accomplish the lowering of the upper support member from the support to the Ausschalwolf at different vertical loads at substantially the same lowering speed.
  • the linear damper comprises a damping medium, for example an ionized liquid, an oil, a gas, a solid, e.g. a granulate, or a medium whose state of aggregation changes during operation.
  • the preferably hydraulic linear damper in a favorable embodiment, a flow control valve, in particular with a pressure compensator on.
  • the flow of the damping medium by means of the pressure compensator also referred to as differential pressure regulator, regulated so that a pressure and thus a load compensation can take place.
  • the flow control valve preferably has a throttle with a line cross-section, wherein the pressure detected before and after the throttle changes the flow by means of the pressure compensator in such a way that it remains constant.
  • the pressure compensator preferably has a pressure compensator spring.
  • the flow control valve can be designed, for example, as an oil flow control valve with pressure compensation. Linear dampers as such are known per se in the prior art, so that further explanations on this can be dispensed with.
  • the lowering unit has a spindle with an external thread and a bearing element with an internal thread, wherein the bearing element engages with the internal thread in the external thread of the spindle.
  • the spindle When lowering the upper support member, a relative rotational movement between the spindle and the bearing member is generated such that the upper support member is lowered at a substantially constant lowering speed from the upper position (support position) to the lower position (Ausschalwolf).
  • the spindle can be rotatably mounted on the lower or upper support member, wherein the bearing member is rotatably connected to the upper and lower support member.
  • the spindle is rotatably mounted on the lower support member, wherein the bearing member is rotatably connected to the upper support member.
  • it may also be rotatably supported on the upper support part, the spindle, wherein the bearing element is then rotatably connected to the lower support member.
  • the spindle preferably has a length of 20 to 2000 mm, in particular of 300 to 800 mm, to allow a reduction from the support position during concreting in the Ausschalwolf after concreting.
  • the bearing element may be designed as a nut with an internal thread, in which engages the external thread of the spindle.
  • the spindle is rotated during the lowering of the upper support member by the threaded engagement with the bearing element in rotation and simultaneously held or guided.
  • the mother mainly takes on the radial forces occurring in the course of the relative movement of the bearing element to the spindle.
  • the bearing element can also be designed such that both radial and axial forces can be absorbed.
  • a particularly stable bearing can be achieved if the lower support part has on a support foot at least one rolling or a pivot bearing, in particular a ball bearing, for the spindle.
  • a plain bearing can be used.
  • the bearing element is fixed by a positive, non-positive or cohesive connection to the upper support part. It is particularly advantageous if the bearing element is fixed via a crimp on the upper part of the support.
  • the bearing of the spindle on the bearing element on the frictional forces during the threaded engagement already be designed so that sets a independent of the load lowering speed, which is suitable for a gentle lowering of the support in the Ausschalwolf.
  • This can be realized by appropriate design of the external thread of the spindle and the internal thread of the bearing element such that the rotational speed or the rotational speed of the spindle is set in the bearing element to a substantially constant, load-independent lowering speed.
  • the brake unit has a brake for decelerating the relative movement between the spindle and the bearing element or for achieving a substantially constant relative rotational movement of the spindle in the bearing element.
  • an additional (ie different from the external thread of the spindle and the internal thread of the bearing element) brake is provided which can increase the braking force in proportion to increasing the speed of the spindle to brake the relative movement between the spindle and the bearing element and so the relative rotational movement the spindle in the bearing element to keep substantially constant.
  • Such brakes are known to those skilled in various designs, such as electric, hydraulic, magnetic, electromagnetic or mechanical brakes, such as centrifugal brakes, rotary brakes, eddy current brakes or the like.
  • the brake is arranged in the lower support part, preferably at its lower end region.
  • the brake is arranged on the bearing element.
  • the brake may for example have a ball drive, a clamp or a jaw.
  • the lowering device is preferably arranged in the interior of the upper or lower support part.
  • the lowering device is completely hidden inside the upper and / or lower support part.
  • the upper support member is designed as an inner tube, which is inserted into the formed as an outer tube lower support member, a stable, telescopic shuttering support can be achieved.
  • a plurality of formwork supports are provided, which are arranged in a substantially vertical position at a horizontal distance from each other. Due to this arrangement, in use, different vertical loads can act on the individual formwork posts. For example, in each case at least one formwork support in an edge region of the formwork construction and at least one formwork support in a central region of the formwork construction can be provided. In use, the formwork support in the central area must absorb higher vertical loads than the formwork support in the edge area. Due to the braking unit, however, the formwork support is lowered in the central region with substantially the same lowering speed as the formwork support in the edge region of the support in the Ausschalwolf.
  • the formwork posts are subjected to many different vertical loads during lowering, with the Brake unit ensures that the shuttering supports are independent of the vertical load acting at the same lowering speed.
  • Fig. 1 shows a formwork support device 1 with a plurality of supported on the ground and at a horizontal distance from each other arranged formwork supports 2, which subordinate a formwork structure 3 subordinate.
  • the formwork structure 3 has in the illustrated embodiment on the formwork supports 2 supported longitudinal or Jochlini 4, on which similar, to the Jochlinin 4 transverse cross member 5 are superimposed.
  • the formwork structure 3 is set up for the production of a ceiling, wherein shuttering panels 6 for this purpose are arranged on the upper side of the cross members 5 until abutment against a wall 7 shown schematically.
  • To secure the formwork posts 2 in a vertical position these are supported by means of tripods 8.
  • the formwork structure 1 is known per se from the prior art, so that more detailed explanations on this can be dispensed with.
  • the formwork supports 2 When installed, especially during and after the production of the concrete ceiling (not shown), the formwork supports 2 are loaded vertically.
  • the formwork support 2 has an upper support part 10, which can be lowered into a lower support part 11.
  • the upper 10 and the lower support member 11 together (apart from the overlap area) substantially the entire longitudinal extent of the formwork support 2.
  • the upper support part 10 has in its upper end region on a plate-shaped widening or support plate 12, on which in the embodiment shown per se known holding head, for example in the form of a four-way head (see. Fig. 1A . 1B ) is set up. On this head of the formwork structure 3 is supported. In the Fig. 2ff the head is not shown for the sake of clarity.
  • the upper support member 10 is designed as an inner tube, which is inserted into the formed as an outer tube lower support member 11.
  • a securing element 13 is provided, which is connectable with spaced apart in the vertical direction holding openings 14 on the upper support member 10.
  • the securing element 13 can be arranged in a securing position within one of the holding openings 14 in order to block a lowering of the upper support part 10.
  • the securing element is arranged in a release position outside the holding openings 14.
  • the securing element 13 a Steckbügel (see also Fig. 5 ), which has an insertion section for insertion into one of the holding openings 14.
  • an adjusting element 15 is provided, which allows a fine adjustment of the height of the support 2.
  • a lowering device 16 for lowering the upper support part 10 by a the formwork structure 3 during concreting supporting position in a removal of the formwork structure 3 enabling Ausschalwolf (see. Fig. 1B ) intended.
  • the lowering device 16 is arranged completely inside the upper 10 and the lower support part 11, respectively.
  • the lowering device 16 has a brake unit 17 such that the lowering of the upper support part 10 to a substantially constant lowering speed - and substantially independent of the transmitted to the upper support member 10 via the formwork 3 vertical load - from the support position to the Ausschal ein is slowed down.
  • the upper support member 10 is lowered without further manipulation by the operator independently in the Ausschalwolf.
  • the brake unit 17 has a hydraulic linear damper 18 with a cylinder 18A and a piston 18B.
  • the piston 18B is slidably supported in the cylinder 18A.
  • a piston rod of the piston 18 B is attached to a holding element 19, here a guided by an eyelet on the piston rod clamping pin, which is held in bores of the upper support member 10.
  • the cylinder 18A is fastened to a further holding element 20, here a simple screw guided through bores in the lower support part 11 and secured with nuts from the outside.
  • the cylinder on the upper support member 10 and the piston 18 B may be attached to the lower support member 11.
  • FIGS. 7 and 8 an alternative embodiment is shown in which the brake unit 17 has a spindle 22 with an external thread 23 and a bearing element 24 with an internal thread, wherein the bearing element 24, here a nut engages with the internal thread in the external thread 23 of the spindle 22.
  • the spindle 22 is rotatably mounted on the lower support member 11.
  • the lower support member 11 on a support leg 25 at least one (only schematically illustrated) pivot bearing 26, for example, a ball bearing, for the spindle 22.
  • a brake 27, here in the form of a centrifugal brake, for influencing the rotational movement of the spindle 22 is schematically shown.
  • the bearing member 24 is rotatably disposed at the lower end of the upper support member 10.
  • the bearing element 24 is fixed to the upper support part 10 via a crimp connection 28.
  • a ball drive (not shown here) or can be provided (not shown here) terminals or jaws in the bearing element 24, through which the friction and thus the approximately constant rotational speed of the spindle 22 can be additionally influenced ,

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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)
EP17183906.1A 2017-07-31 2017-07-31 Appui de coffrage Withdrawn EP3438376A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP17183906.1A EP3438376A1 (fr) 2017-07-31 2017-07-31 Appui de coffrage
EP22159176.1A EP4026962B1 (fr) 2017-07-31 2018-07-31 Supports de coffrage, dispositif de support de coffrage et procédé de décoffrage d'un agencement de coffrage
PCT/EP2018/070652 WO2019025394A1 (fr) 2017-07-31 2018-07-31 Étai de coffrage, dispositif d'étai de coffrage et procédé de décoffrage d'un ensemble coffrage
EP18743832.0A EP3662119B1 (fr) 2017-07-31 2018-07-31 Appui de coffrage, arrangement de coffrage et methode de decoffrage d'un tel arrangement de coffrage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17183906.1A EP3438376A1 (fr) 2017-07-31 2017-07-31 Appui de coffrage

Publications (1)

Publication Number Publication Date
EP3438376A1 true EP3438376A1 (fr) 2019-02-06

Family

ID=59506086

Family Applications (3)

Application Number Title Priority Date Filing Date
EP17183906.1A Withdrawn EP3438376A1 (fr) 2017-07-31 2017-07-31 Appui de coffrage
EP22159176.1A Active EP4026962B1 (fr) 2017-07-31 2018-07-31 Supports de coffrage, dispositif de support de coffrage et procédé de décoffrage d'un agencement de coffrage
EP18743832.0A Active EP3662119B1 (fr) 2017-07-31 2018-07-31 Appui de coffrage, arrangement de coffrage et methode de decoffrage d'un tel arrangement de coffrage

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP22159176.1A Active EP4026962B1 (fr) 2017-07-31 2018-07-31 Supports de coffrage, dispositif de support de coffrage et procédé de décoffrage d'un agencement de coffrage
EP18743832.0A Active EP3662119B1 (fr) 2017-07-31 2018-07-31 Appui de coffrage, arrangement de coffrage et methode de decoffrage d'un tel arrangement de coffrage

Country Status (2)

Country Link
EP (3) EP3438376A1 (fr)
WO (1) WO2019025394A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3816367A1 (fr) * 2019-10-28 2021-05-05 DOKA GmbH Support de coffrage
ES2926749A1 (es) * 2021-04-19 2022-10-27 Sist Tecnicos De Encofrados Sa Sistema de encofrado para forjados de techo

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11124978B2 (en) 2019-03-20 2021-09-21 Big Time Investment, Llc Strut for a multi-story building
DE102022211023A1 (de) 2022-10-18 2024-04-18 Doka Gmbh Sicherheitseinrichtung für Deckenschalung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0715041A1 (fr) * 1994-11-30 1996-06-05 Adrianus Johannus Leonardus Marinus Bekkers Etançon pour le bâtiment
FR2815064A1 (fr) 2000-10-05 2002-04-12 Bouygues Batiment Perfectionnement a un dispositif de coffrage et de reprise des charges
FR2823521A1 (fr) * 2001-04-13 2002-10-18 Bouygues Batiment Dispositif d'etaiement, etai, procede de mise en oeuvre d'un ensemble d'etais pour soutenir une charge et application au soutien d'un coffrage
WO2011131977A1 (fr) * 2010-04-20 2011-10-27 Byrne Bros (Formwork) Limited Outil électrique pour ensembles d'ouvrages provisoires
GB2526883A (en) * 2014-06-06 2015-12-09 Mmc Innovations Llp Temporary support & raising device
FR3028281A1 (fr) * 2014-11-06 2016-05-13 Sateco Sa Dispositif de soutenement et methode de coffrage au moyen d'un tel dispositif

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101710536B1 (ko) * 2016-10-12 2017-02-28 주식회사 넥스플러스 건축물 슬라브시공방법 및 그에 사용되는 건축자재

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0715041A1 (fr) * 1994-11-30 1996-06-05 Adrianus Johannus Leonardus Marinus Bekkers Etançon pour le bâtiment
FR2815064A1 (fr) 2000-10-05 2002-04-12 Bouygues Batiment Perfectionnement a un dispositif de coffrage et de reprise des charges
FR2823521A1 (fr) * 2001-04-13 2002-10-18 Bouygues Batiment Dispositif d'etaiement, etai, procede de mise en oeuvre d'un ensemble d'etais pour soutenir une charge et application au soutien d'un coffrage
WO2011131977A1 (fr) * 2010-04-20 2011-10-27 Byrne Bros (Formwork) Limited Outil électrique pour ensembles d'ouvrages provisoires
GB2526883A (en) * 2014-06-06 2015-12-09 Mmc Innovations Llp Temporary support & raising device
FR3028281A1 (fr) * 2014-11-06 2016-05-13 Sateco Sa Dispositif de soutenement et methode de coffrage au moyen d'un tel dispositif

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3816367A1 (fr) * 2019-10-28 2021-05-05 DOKA GmbH Support de coffrage
US11319714B2 (en) 2019-10-28 2022-05-03 Doka Gmbh Telescoping formwork support with twist-proof region
ES2926749A1 (es) * 2021-04-19 2022-10-27 Sist Tecnicos De Encofrados Sa Sistema de encofrado para forjados de techo

Also Published As

Publication number Publication date
WO2019025394A1 (fr) 2019-02-07
EP4026962B1 (fr) 2023-04-26
EP3662119A1 (fr) 2020-06-10
EP3662119B1 (fr) 2022-06-22
EP4026962A1 (fr) 2022-07-13

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