EP0434603A1 - Dispositif pour la fixation de la distance entre deux parois de coffrage opposées - Google Patents

Dispositif pour la fixation de la distance entre deux parois de coffrage opposées Download PDF

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Publication number
EP0434603A1
EP0434603A1 EP90810836A EP90810836A EP0434603A1 EP 0434603 A1 EP0434603 A1 EP 0434603A1 EP 90810836 A EP90810836 A EP 90810836A EP 90810836 A EP90810836 A EP 90810836A EP 0434603 A1 EP0434603 A1 EP 0434603A1
Authority
EP
European Patent Office
Prior art keywords
crossbar
mounting element
recesses
triangular
angle iron
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.)
Granted
Application number
EP90810836A
Other languages
German (de)
English (en)
Other versions
EP0434603B1 (fr
Inventor
Werner Wälchli
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.)
TRATAN AG
Original Assignee
TRATAN AG
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 CH453489A external-priority patent/CH675274A5/de
Application filed by TRATAN AG filed Critical TRATAN AG
Priority to AT90810836T priority Critical patent/ATE89634T1/de
Publication of EP0434603A1 publication Critical patent/EP0434603A1/fr
Application granted granted Critical
Publication of EP0434603B1 publication Critical patent/EP0434603B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/064—Spacers placed on the bottom of the mould

Definitions

  • the present invention relates to a device for fixing the position of two formwork walls facing each other at a distance, consisting of a rod-shaped holding element which is intended to be anchored in a foundation in a vertical position approximately along the center line of a wall to be erected and a crossbar, the length of which corresponds to the distance which corresponds to formwork walls facing one another.
  • the rod-shaped mounting element consists of a U-shaped profile section. A through hole is drilled in each of the two parallel legs of the profile section, the two holes being aligned with one another. A freely displaceable crossbar is pushed through the two holes. The crossbar is fixed by means of a fixing pin, which is struck between the cross bar and the U-shaped profile bar. For this purpose, the profile bar is provided with a notch running in the longitudinal direction.
  • the known device has proven itself in terms of functionality. However, there is a risk that the corresponding locating pins will be lost or missing at all.
  • the rod-shaped mounting element consists of a tube section or a full round rod.
  • a slot is sawn or milled into this holding element about 2-4 cm below the upper end to about three quarters of its outside diameter. This slot is used to hold and fix the crossbar.
  • This device has also proven its functionality. However, making the slot in the tube or round bar proves to be a very expensive operation. In addition, a tool must be available for fixing the crossbar, with which the upper end of the mounting element can be bent to fix the crossbar.
  • the present invention has for its object to provide a device according to the preamble of claim 1, which is installed without fixing pins and without special tools, and can be manufactured cheaper.
  • the device according to the invention which is designated as a whole by 1 is hammered into the not yet hardened concrete.
  • the two formwork walls 12 and 13 are erected on both sides of the device 1 and pulled together by means of tensioner 10.
  • the fresh concrete is then poured in between the formwork walls.
  • the spacing devices according to the invention are completely covered by the concrete and are lost.
  • the device 1 consists of two basic elements, the mounting element 2 and the crossbar 3.
  • the mounting element 2 is in the embodiment shown made from an angle iron. At the lower end, the legs are cut off at an angle. The tip 4 thus formed facilitates the pushing of the device into the fresh concrete.
  • the angle iron chosen for the mounting element preferably has a flank length of 20-30 mm. About 5-6 cm below the upper end of the holding element 2 8 triangular recesses 5 are punched into both legs. These recesses 5 are made in alignment in the legs 8, so that the crossbar 3 can be pushed in.
  • the crossbar 3 is made of an angle iron or a structured reinforcing iron, and is provided at its ends with a plastic cap.
  • the web present on the mounting element 2 between the long sides of the two triangular cutouts 5 is pre-bent in production so that the mounting element 2 deforms at the construction site at the right place and the force required for this deformation is no longer too great.
  • a further possibility of reducing the force for the deformation of the upper region 6 results from the fact that the web 9 resulting on the long side of the triangular recess 5 is interrupted by approximately 5 mm.
  • the remaining Stub hold the cross bar 3 and the upper portion 6 of the support member 2 can be bent with little force.
  • the step of pre-bending the web 9 is omitted.
  • a hole 7 extending over the apex is punched. This hole is used on the construction site to insert a round bar 11 and to bend the upper area 3 of the mounting element with relatively little force due to its leverage.
  • the dimensioning of the hole is designed in such a way that the tip of a building hammer or a chisel also fits into it.
  • the device is inserted approximately in the middle of the wall to be created in the fresh concrete.
  • the crossbar 3 is now moved so that one end is aligned with the outer formwork wall 12.
  • the upper area 6 of the holding element 2 is bent with a round bar 11 as indicated in FIG. 3a.
  • the recesses 5 deform at this kink in such a way that the crossbar, which consists of angle iron, is deformed and is immovably connected to the mounting element.
  • auxiliary mounting element 21 is used in order to avoid bending of the crossbar 3 in rough operation, as is a construction site. If such an auxiliary mounting element 21 is used, the mounting element 2 is not hit in the middle, but near one of the formwork walls 12 or 13 in the concrete of the floor slab that has not yet been heard. The longer part of the crossbar is then supported with the auxiliary bracket element.
  • the auxiliary bracket element 21 is also hammered into the concrete, but, unlike the bracket element 2, is not jammed with the crossbar 3.
  • the auxiliary mounting element 21 is provided at one end with a prepared opening through which the crossbar 3 is guided. The auxiliary bracket member 21 is used only to stabilize and support the crossbar.
  • the crossbar 3 advantageously has a structured surface which increases the grip of the connection with the mounting element 2. It would be conceivable for the cross bar 3 to be made of a structured reinforcing steel is made.
  • the device 1 according to the invention is not only extremely inexpensive in terms of material expenditure and production, but also forms a unit for delivery. No separate loose parts are required to lock the crossbar 3 in its desired position. For the application of the device 1, only a round bar 11 is required as a lever, which is always present in the form of remnants of the reinforcing steel on a construction site.
  • the triangular recess 5 can also, as shown in FIG. 4, be removed with the base line of the triangle from the apex 14 of the mounting element 2 and punched into the two legs 8. The buckling then takes place on the side facing away from the apex 14 of the mounting element and there are two webs 9 'which are formed on the flanks 16. This does not change the function of the device.
  • the hole 7 made above the recess 5 in the apex region allows deformation by bending by means of a lever. If the crossbar is not completely in the right place when it is clamped for the first time, the recess 5 can be opened spread again slightly. Clamping by means of bending also guarantees that the support element does not come loose again in not fully hardened concrete. This risk existed for all elements in which the connection between the mounting element and the crossbar was ensured by impact, for example with a hammer.

Landscapes

  • 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)
EP19900810836 1989-12-18 1990-10-31 Dispositif pour la fixation de la distance entre deux parois de coffrage opposées Expired - Lifetime EP0434603B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90810836T ATE89634T1 (de) 1989-12-18 1990-10-31 Vorrichtung zur fixierung der lage von zwei zueinander in abstand gegenueberstehenden schalungswaenden.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH453489A CH675274A5 (en) 1989-12-18 1989-12-18 Positioned for two oppositely spaced shuttering walls - has vertical angle iron holder bar with triangular end recess for cross-bar
CH4534/89 1989-12-18
CH184890 1990-05-31
CH1848/90 1990-05-31

Publications (2)

Publication Number Publication Date
EP0434603A1 true EP0434603A1 (fr) 1991-06-26
EP0434603B1 EP0434603B1 (fr) 1993-05-19

Family

ID=25688840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900810836 Expired - Lifetime EP0434603B1 (fr) 1989-12-18 1990-10-31 Dispositif pour la fixation de la distance entre deux parois de coffrage opposées

Country Status (2)

Country Link
EP (1) EP0434603B1 (fr)
DE (1) DE59001497D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109667424A (zh) * 2018-12-31 2019-04-23 宁波二十冶建设有限公司 一种铝合金模板拉杆固定装置及施工方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH664186A5 (en) * 1984-07-09 1988-02-15 Maegert Bautechnik Ag Securing method for cross-bar to girder - with lugs hammered down to hold in semi-circular recesses in flanges
DE3823401C1 (en) * 1988-07-09 1989-07-20 Tratan Ag, Oberdiessbach, Ch Device for fixing the position of two shuttering walls which are spaced apart opposite one another
DE3811809A1 (de) * 1988-04-08 1989-10-19 Huebner Handel Huewa Ansetzsystem, insbesondere fuer schalverfahren des vertikalen betonbau's

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH664186A5 (en) * 1984-07-09 1988-02-15 Maegert Bautechnik Ag Securing method for cross-bar to girder - with lugs hammered down to hold in semi-circular recesses in flanges
DE3811809A1 (de) * 1988-04-08 1989-10-19 Huebner Handel Huewa Ansetzsystem, insbesondere fuer schalverfahren des vertikalen betonbau's
DE3823401C1 (en) * 1988-07-09 1989-07-20 Tratan Ag, Oberdiessbach, Ch Device for fixing the position of two shuttering walls which are spaced apart opposite one another

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109667424A (zh) * 2018-12-31 2019-04-23 宁波二十冶建设有限公司 一种铝合金模板拉杆固定装置及施工方法

Also Published As

Publication number Publication date
EP0434603B1 (fr) 1993-05-19
DE59001497D1 (de) 1993-06-24

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