EP0317938B1 - Schalungsvorrichtung - Google Patents

Schalungsvorrichtung Download PDF

Info

Publication number
EP0317938B1
EP0317938B1 EP88119359A EP88119359A EP0317938B1 EP 0317938 B1 EP0317938 B1 EP 0317938B1 EP 88119359 A EP88119359 A EP 88119359A EP 88119359 A EP88119359 A EP 88119359A EP 0317938 B1 EP0317938 B1 EP 0317938B1
Authority
EP
European Patent Office
Prior art keywords
lever arm
reinforcement
hook part
strips
strip
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.)
Expired - Lifetime
Application number
EP88119359A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0317938A1 (de
Inventor
Artur Schwörer
Hans Braun
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.)
Peri Werk Artur Schwoerer GmbH and Co KG
Original Assignee
Peri Werk Artur Schwoerer GmbH and Co KG
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 Peri Werk Artur Schwoerer GmbH and Co KG filed Critical Peri Werk Artur Schwoerer GmbH and Co KG
Priority to AT88119359T priority Critical patent/ATE65283T1/de
Publication of EP0317938A1 publication Critical patent/EP0317938A1/de
Application granted granted Critical
Publication of EP0317938B1 publication Critical patent/EP0317938B1/de
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
    • E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements

Definitions

  • the invention relates to a formwork device with at least two formwork panels, each consisting of a formlining and at least at some of its edges substantially perpendicular from its rear protruding reinforcing strips having a plurality of connecting bores, and with at least one connecting element for two adjacent formwork panels, which one through two mutually aligned bores of two reinforcement strips lying directly next to one another has a plug part which can be plugged in and a hook part which branches off from one end thereof and which can be brought into engagement with the reinforcement strip which is facing away from the connection point between the pin and the hook part by pivoting the hook part when the pin part is inserted .
  • one-piece butt clamps are already provided for connecting adjacent formwork panels, which one through Aligned mounting holes plug-in pin part and a hook part connected thereto. After the pin part is inserted through the mounting holes largely without play, the hook part is pivoted downwards and struck in a clamp-like manner over the closely spaced connecting strips of the adjacent formwork panels, causing the connecting strips to pull against one another and thus to the desired connection of the two formwork panels.
  • the advantage of this known butt clamp is that it is possible to work with a single connecting link, but when the hook part is folded down and clamped onto the connecting strip, a force which pulls the two formwork panels together is essentially exerted only at points further away from the formwork skin. The formwork panels are not pulled together optimally on the side where the concrete is backfilled, so that unpleasant impressions and so-called bleeding of the concrete can occur at the connection points of the formwork panels.
  • the aim of the invention is to provide a formwork device of the type mentioned at the outset, with which a secure contraction of adjacent formwork panels is ensured despite the use of a one-piece connecting member, the contraction forces being intended to be as close as possible to the formwork skin and to the rear end of the reinforcement strips.
  • a particularly preferred embodiment of the invention provides that the connecting element is essentially in alignment on the side of the pin part facing away from the hook part with the connecting plane between the hook part and the pin part, when the pin part is inserted into the aligned bores facing the reinforcing strip located on the insertion side and engaging with it, preferably rounded stop edge, that the lever arm has a decreasing cross-section from the pin part and through which two essentially aligned bores of the reinforcement strips, which are at least close to one another, can be passed through until the stop edge on the reinforcement facing away from the lever arm KungsstMail is applied, whereupon by exerting force on the hook part not yet in engagement with the reinforcement strip in the sense of generating a torque around the point of contact of the stop edge on the reinforcement strip, the correspondingly formed concave inner surface of the lever arm is guided along the edge of the bore facing away from
  • the connecting element initially acts as a lever with a very large lever arm ratio between the hand-operated lever arm and the lever arm inserted through the mounting holes, so that with comparatively small hand forces, very considerable contraction forces occur at a short distance opposite reinforcement strips of adjacent formwork panels can be exercised. Since the connecting element is expediently held essentially perpendicular to the level of the formwork at this stage, these contraction forces are exerted on the edge of the bores facing the formwork skin, that is to say relatively close to the formwork skin.
  • the hook part is pivoted about the axis of the pin part until the engaging end of the hook part grasps the connecting strip lying on the side of the first lever arm and engages in positive engagement therewith is coming.
  • contraction forces are also exerted at this point.
  • contracting forces are thus exerted on the two connecting strips of the adjacent formwork panels both near the formlining and near the rear edge of the connecting strips.
  • the supporting surface of the hook part is clamped on the surface of the associated connecting strip on the opposite side of the connecting strip, so that the clamping forces are applied to the connecting strips a relatively long distance between an area near the formwork skin to the rear end of the connecting strips and are therefore relatively evenly distributed.
  • the connecting element according to the invention not only is the provision of large contraction forces achieved during assembly, but it is also ensured that, after assembly, the forces that hold the connecting strips together are effective over the greatest possible depth of the connecting strips, so that they are not as in the known arrangements, the contraction forces are only present in the area of the bores or even only behind.
  • Another advantage of the invention is the large distance between the tension and compression point, which ensures a rigid connection. Since the formwork panels are pulled together relatively close to the side of the formwork device facing the concrete, bleeding of the concrete is also effectively prevented.
  • connecting links according to the invention can be easily removed even under tension (under concrete pressure), since they are tilted out and not pulled out.
  • An advantageous development of the invention is characterized in that the concave inner surface of the lever arm is curved in the direction perpendicular to the central axes, that it has the largest possible line of contact or area with the edge of the hole when in contact with the edge of the hole. This results in a relatively large-area contact of the lever arm with the relevant edge of the bore of the connecting strip, so that the surface forces when inserting the connecting member and contracting the connecting strips are limited.
  • the lever arm can initially be inserted into the mutually aligned bores of two connecting strips without effort, until the free end of the lever arm emerges on the opposite side of the bores. If the hook part is now pivoted in its plane in such a way that the lever arm reaches around the end of the bore, the concave inner surface of the lever arm comes into engagement with the trailing edge of the rear bore, and this engagement takes into account with increasing pivoting of the hook part and entry of the pin part the bores steadily, which results in the contraction of the two connecting strips in a particularly uniform manner. In other words, the contraction forces increase continuously until the reinforcement strips lie against one another in the desired manner.
  • the hook part on the side of the reinforcement strips facing away from its engaging end is at a clear distance from the reinforcement strip in the assembled state. In this way, during assembly, the hook part can be pivoted resiliently a little further than its end position, in the tensioning direction, whereupon the tilting into the engagement position with the reinforcing strip is facilitated.
  • lever arm has essentially the shape of an arc which extends over an angle of 180 °. It is also advantageous if the lever arm tapers continuously starting from the pin part.
  • an advantageous development of the invention provides that the lever arm has an essentially round cross section on the pin part elliptical cross section merges in the area of the outer end surface, the longer ellipse axis preferably running perpendicular to the plane of the central axes and the end surface being flattened to form a larger contact surface.
  • the stop edge is part of a flange extending around the pin part. Normally, no force should be exerted on the connecting strips from the stop when assembled, since this function is reserved for the support surface on the hook part. In principle, however, at least part of the supporting force on the side facing away from the lever arm and the engagement end could also be transmitted to the connecting strips via the relevant flange. According to an alternative embodiment, the region of the flange facing the hook part could serve as a supporting surface of the hook part on the connecting strip.
  • a uniform distribution of the contraction forces can be promoted in that the additional support surface lies essentially halfway between the end surface of the lever arm and the engaging end of the hook part.
  • the counter-lever arm formed by the hook part is five to fifteen and in particular approximately ten times as long as the distance between the end face of the lever arm and the Stop edge is present.
  • the pin part has the surface shape of a section of a ball with a diameter has the same diameter as the pin part.
  • the angle between the longitudinal axis of the reinforcing strip and the plane of the central axes of the connecting member is 15 to 45 °, in particular 20 to 40 ° preferably 25 to 35 ° and generally about 30 °.
  • Another embodiment is characterized in that the support surface - in the assembled state - projects a little further in the direction of the reinforcement strips than the stop edge.
  • the support surface comes into engagement with the surface of the associated reinforcement strip, as a result of which the support point is moved much further away from the lever arm in the direction of the hook part, which is an indication for the operator that the required degree of contraction of the two formwork panels is now is reached and the hook part can be pivoted in the direction of the reinforcement strips around the axis of the pin part until the engaging end of the hook part has been pushed behind the reinforcement strips and has come into engagement therewith.
  • the greater distance of the support surface from the end surface of the lever arm relative to the distance from the stop edge to the end surface of the lever arm has the further advantage that larger tolerances of the connecting strips or their Relative arrangement can be better compensated for each other.
  • a further advantageous embodiment is characterized in that the engagement end of the hook part in the assembled state includes a small angle of preferably 3 ° to 10 ° and in particular approximately 6 ° in view of the rear side of the reinforcement strips. In this way, thickness tolerances in the area of the reinforcement strips lying one on top of the other can be compensated particularly well.
  • the engagement end of the hook part is linear or when pivoting towards the connecting strip on the rear edge of the connecting strips.
  • the angles in each flal should be kept so small that self-locking occurs in connection with the existing frictional forces.
  • the engagement end on both sides of a central longitudinal plane has inclined surfaces which are mirror images of one another, such that a line or. strip-shaped jamming between the engagement end and the reinforcement strips can be made regardless of the side from which the lever arm is inserted into the aligned holes.
  • the engagement end of the hook part is symmetrical in the sense that the connecting member can be inserted into the aligned connecting bores from both sides.
  • the connecting link according to the invention can therefore be easily inserted by right-handed as well as left-handed people from one or the other side into the bores that are covered and then pivoted downwards or upwards.
  • each formwork panel 23 consists of a preferably flat formwork skin 11, preferably of rectangular or square shape.
  • the formwork 11 with rigid steel reinforcement strips 15, 15 ' are firmly connected in a manner not shown.
  • the reinforcement strips 15 thus extend perpendicular to the formwork skins 11 and have a constant depth and thickness over their entire length.
  • rigid reinforcement bands 24 which extend perpendicularly to the reinforcement strips 15, 15' and to the formwork skins 11 and, like the reinforcement strips 15, 15 ', to reinforce the formwork skins 11 serve.
  • the liquid concrete is later introduced into the space 25 in front of the formwork skins 11 after the formwork device has been installed.
  • the holes 14 are about half the depth of the reinforcing strips 15, 15 ', i.e. approximately on the central longitudinal axis 21 (FIG. 3) of the reinforcing strips 15.
  • the connecting link according to the invention for two formwork panels 23 consists of a hook-shaped curved hook part 12 with a free engagement end 12 'and a flange 16 having a stop edge 16, at the opposite end and a pin part 17 projecting essentially perpendicularly and a subsequent one in the same Senses like the hook part 12 curved or kinked lever arm 13, with a concavely curved inner surface 31.
  • the pin part 17 has a slightly smaller diameter than the holes 14, 14 'and is slightly spherical on its circumference in the manner shown in FIGS. 1 and 2, the center of the ball on its central axis 26 at half the axial Length of the pin part 17 is.
  • the length of the pin part 17 corresponds directly to the total length of two according to FIGS. 1 and 2 successive holes 14. In other words, the length of the pin part 17 is approximately twice as large as the thickness of one of the same thickness reinforcing strips 15 or 15 '.
  • the lever arm 13 begins in the region of the flange 16 'facing the end of the pin part 17 with the same diameter as the pin part 17 at this point and then tapers steadily to its end face 18. At the same time, the lever arm 13 is curved so that it is in the side view of FIGS. 1 and 2 has approximately sickle shape.
  • the cross section of the pin part 17 is circular at the beginning and changes continuously towards the surface 18 into an elliptical shape (FIG. 3).
  • the flange 16 carrying the stop edge 16 ' has a flat surface 30 towards the pin part 17, from which the pin part 17 rises vertically.
  • On the engaging end 12 'facing surface of the hook part 12 is at a distance from the flange 16' a flat support surface 20 which protrudes slightly further in the direction of the pin part 17 than the flat surface 30 of the flange 16 '.
  • the hook part 12 - starting from the flange 16 '- initially approximately up to the height of the support surface 20 substantially perpendicular to the axis 26 of the pin part 17, to then bend slightly in the direction away from the lever arm 13.
  • a clear, initially increasing and then decreasing distance 19 is created between the regions of the hook part 12 which are somewhat further away from the flange 16 and the reinforcing strips 15.
  • the central axis 27 of the hook part 12, the central axis 26 of the pin part 17 and the central axis 28 of the lever arm 13 1 preferably lie in a plane in which the longitudinal axis 22 of the connecting element 12, 13, 16, 17 according to the invention also lies according to the view in FIG. 3.
  • the two formwork panels 23 to be connected according to FIGS. 1 and 2 are placed side by side until two mounting holes 14 are in alignment with one another.
  • the connecting member is inserted in the manner shown in FIG. 1 from the side with the lever arm 13 ahead into the aligned bores 14, 14 '.
  • the coinciding with the longitudinal axis 22 plane 26, 27, 28 is substantially perpendicular to the planes de connecting strips 15. It is important that the holes 14, 14 'from the rear surfaces of the formwork 11 have such a distance that for the hook part 12 and the flange 16 'sufficient space is available to introduce the tapered curved lever arm 13 into the holes 14, 14' in the manner shown in Fig. 1.
  • the connecting member is pivoted according to the arrow F in Fig.
  • the connecting member is now on the end surface 18, on the support surface 20 and finally at the location 40 indicated in Fig. 3 of the engagement end 12 'in clamping connection with the surfaces of the reinforcing strips 15, 15'.
  • the clamping forces K1, K2 and K3 are indicated schematically in FIG. 2. They act alternately from opposite sides on the reinforcement strips 15, 15 '.
  • Corresponding connecting links can now be arranged at desired intervals in further pairs of mounting holes 14, 14 'as desired, in order to achieve a rigid connection of all formwork panels 23 to be connected to one another.
  • the connecting member can also be removed very easily from the formwork panels, since at most light hammer blows only have to be exerted essentially in the longitudinal direction of the reinforcing strips 15 and not perpendicular to their surfaces. In the latter case, there could be a resilient yield when hitting, which would make loosening difficult.
  • the hook part 12 is shown in an intermediate position between the starting position shown in dashed lines and the end position according to FIGS. 2 and 3.
  • Figure 4 shows a section perpendicular to the longitudinal axis 41 of the engaging end 12 'along line IV-IV in Figure 2.
  • the surface 42 of the engaging end 12' engaging with the reinforcing strips 15 ' is also formed obliquely to in cooperation with the oblique arrangement of this surface according to Figure 2 to achieve a linear or strip-shaped contact surface between the rear edge of the reinforcing strip 15 'and the engagement end 12'.
  • the inventive design of the hook part 12, the pin part 17 and the lever arm 13 has the further advantage that self-locking occurs even when the hook part 12 is not yet in engagement with the reinforcing strips 15 (Fig. 5). This is particularly due to the inventive design of the stop edge 16 and the end surface 18. The advantage is greater security against accidental loosening of the connecting link.
  • Thickness tolerances can be easily compensated for due to the wedge-shaped surface 42, 42 '; in particular, when swinging down the hook part 12 there is a uniformly increasing tension between the connecting member and the reinforcing strips 15, 15 '.

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)
  • Moulds, Cores, Or Mandrels (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Formation And Processing Of Food Products (AREA)
EP88119359A 1987-11-23 1988-11-21 Schalungsvorrichtung Expired - Lifetime EP0317938B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88119359T ATE65283T1 (de) 1987-11-23 1988-11-21 Schalungsvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873739633 DE3739633A1 (de) 1987-11-23 1987-11-23 Schalungsvorrichtung
DE3739633 1987-11-23

Publications (2)

Publication Number Publication Date
EP0317938A1 EP0317938A1 (de) 1989-05-31
EP0317938B1 true EP0317938B1 (de) 1991-07-17

Family

ID=6341050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88119359A Expired - Lifetime EP0317938B1 (de) 1987-11-23 1988-11-21 Schalungsvorrichtung

Country Status (5)

Country Link
US (1) US4886234A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0317938B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE65283T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE3739633A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES2023246B3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4033051B1 (en) * 2021-01-22 2023-06-07 ULMA C y E, S. COOP. Formwork assembly for a vertical formwork

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5471804A (en) * 1988-11-21 1995-12-05 Winter, Iv; Amos G. Building system using prefabricated building panels and fastening components used therewith
CA2006575C (en) * 1989-12-22 1993-06-22 Vittorio Spera Prefabricated assembly for poured concrete forming structures
DE4243216A1 (de) * 1992-12-19 1994-06-23 Mueller Siegfried Dipl Archite Keilverbindung
US6530553B1 (en) 1999-09-20 2003-03-11 Philip A. Diorio Method and apparatus for making concrete buildings
DE19945997B4 (de) * 1999-09-24 2004-04-29 Peri Gmbh Vorrichtung zum Verbinden von Schalelementen
US20050005575A1 (en) * 2003-07-09 2005-01-13 Durand Forms Incorporated Concrete forming system
DE10348852A1 (de) * 2003-10-21 2005-06-02 Peri Gmbh Schalungssystem
US20060255236A1 (en) * 2005-05-11 2006-11-16 Shidler David C Waler clamp
DE102013107303B4 (de) * 2013-07-10 2024-06-06 Polytech Gmbh Schaltafel für Betonierungsschalungen
WO2020225216A1 (en) * 2019-05-07 2020-11-12 Peri Gmbh A wedge-clip connector assembly
CN112809885A (zh) * 2020-12-31 2021-05-18 重庆聚融建设（集团）股份有限公司 便于快速分开的锁扣

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US953383A (en) * 1909-03-15 1910-03-29 Joseph W Holman Wall-mold.
US1636256A (en) * 1923-07-23 1927-07-19 Peter D Johnston Poured-wall form
US2693628A (en) * 1952-04-21 1954-11-09 Robert R Anderson Co Locking device for concrete forms
DE1148730B (de) * 1955-09-20 1963-05-16 Acrow Eng Ltd Mittels einer Schraube anziehbare Klemme zum Verbinden und Ausrichten von Schalungstafeln
CH336973A (fr) * 1955-09-20 1959-03-15 Acrow Eng Ltd Dispositif de serrage pour panneaux de coffrage
CH343113A (fr) * 1957-09-06 1959-12-15 Fouque Daniel Dispositif d'assemblage d'au moins deux pièces profilées
US2964294A (en) * 1958-09-04 1960-12-13 Symons Clamp & Mfg Co Waler clamp for concrete wall forms
FR2079914A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1970-02-17 1971-11-12 Cegebat Gp
DE2906800C2 (de) * 1979-02-22 1983-08-04 NOE-Schaltechnik GmbH, 7334 Süssen Keilklammer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4033051B1 (en) * 2021-01-22 2023-06-07 ULMA C y E, S. COOP. Formwork assembly for a vertical formwork

Also Published As

Publication number Publication date
ATE65283T1 (de) 1991-08-15
ES2023246B3 (es) 1992-01-01
DE3739633C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-02-07
DE3739633A1 (de) 1989-06-01
US4886234A (en) 1989-12-12
DE3863755D1 (de) 1991-08-22
EP0317938A1 (de) 1989-05-31

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