EP2511446A1 - Pince pour tableaux de coffrage de béton - Google Patents

Pince pour tableaux de coffrage de béton Download PDF

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Publication number
EP2511446A1
EP2511446A1 EP11162504A EP11162504A EP2511446A1 EP 2511446 A1 EP2511446 A1 EP 2511446A1 EP 11162504 A EP11162504 A EP 11162504A EP 11162504 A EP11162504 A EP 11162504A EP 2511446 A1 EP2511446 A1 EP 2511446A1
Authority
EP
European Patent Office
Prior art keywords
housing part
housing
jaw
clamp according
actuating element
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Withdrawn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
EP11162504A
Other languages
German (de)
English (en)
Inventor
Niels Hollmann
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.)
Hofin GmbH
Original Assignee
Hofin 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 Hofin GmbH filed Critical Hofin GmbH
Priority to EP11162504A priority Critical patent/EP2511446A1/fr
Publication of EP2511446A1 publication Critical patent/EP2511446A1/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Withdrawn legal-status Critical Current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
    • 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
    • E04G17/045—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements being tensioned by wedge-shaped elements
    • 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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G2009/023—Forming boards or similar elements with edge protection
    • E04G2009/025—Forming boards or similar elements with edge protection by a flange of the board's frame

Definitions

  • brackets The hitherto common construction of such brackets was an "open construction" in which z. B. a base body made of steel profiles, the contact surface included, and both the fixed and the pivotable jaw and the sliding actuator to two longitudinal sides of the body out were completely open.
  • This design makes the clamp expensive to manufacture, has a high weight, and is susceptible to contamination including contaminants from concrete splash or concrete vat.
  • the invention has for its object to provide a clamp for concreting formwork panels available, which is inexpensive to produce, can be executed in a lightweight design and is less susceptible to contamination.
  • the clip Due to the more “closed construction", in which the fixed jaw, the pivoting jaw and the sliding actuator each to a very substantial extent in a housing, the clip is less susceptible to contamination and more practical for handling handling. In addition, this design is inherently more stable, which creates a good condition for weight reduction and cost-effective production.
  • the clip according to the invention is not limited to the fact that the housing has only a first housing part and a second housing part.
  • the housing may rather have one or more further housing parts.
  • the housing may be formed by the first housing part and the second housing part, which are connected to each other. It is also possible to form the first housing part and the second housing part as the same or substantially the same parts, which naturally makes the production much easier and cheaper. It is also possible that the first housing part and the second housing part are connected to each other by releasable connecting elements, which facilitates the production, but also allows inexpensive repairs of the clip.
  • the options described in this paragraph can be used individually or in combination options.
  • the housing with the exception of two passage openings for the actuating element and an opening in the contact surface, through which opening said jaws protrude partially over the contact surface - substantially closed.
  • a first pair of female-male engaging locations exists between the fixed jaw and the first housing member and the second housing member, respectively, and spaced therefrom is a second pair of female-male engaging locations between the stationary jaw and the first housing part or the second housing part.
  • the clip according to the invention is (are) one or more or all female-male engagement site (s) (each) as, preferably round, pin on the respective jaw and as, preferably round, opening, a through hole or a Sack opening is formed on the first housing part and the second housing part.
  • one or more or all female-male engagement points are formed by engaging a bolt in an opening on the first housing part and the second housing part, respectively an opening of the fixed jaw or the pivotable jaw is positioned.
  • the first and the second housing part and / or the fixed jaw and / or the pivoting jaw and / or the bolt or the bolt and / or the actuating element are plastic parts.
  • the increased stability of the clip construction provided by the invention provides a basis for the feasibility of one or more components of the clip as a plastic part. This makes production much less expensive, facilitates handling with the clip, and reduces corrosion. Not all the constituents mentioned must be plastic parts, although this leads to a particularly favorable result overall. Significant progress is already achieved if only the first and the second housing part are plastic parts.
  • the more specific formations referred to in this paragraph may be added to the parenthesis of the Registration, but also in one or more of the above-discussed, more specific training, be realized.
  • the first and the second housing part and / or the fixed jaw and / or the pivotable jaw and / or the bolt or the bolt and / or the actuating element are metal parts. Not all of these mentioned components of the clip need to be metal parts, although this is also possible. It is possible, for. B. particularly highly loaded components as metal parts, in particular the fixed jaw and / or the pivoting jaw and / or - especially - the bolt or bolts and / or the actuator. Individual or all remaining components of the clip can then be plastic parts in particular.
  • the more specific embodiments referred to in this paragraph may be implemented in the parenthesis in the introductory paragraph of the application but also in one or more of the more specific embodiments discussed above.
  • the actuator has substantially the shape of a rod with a rectangular cross-section or a cross-section, which finds place in a circumscribing rectangle.
  • the actuating element has an action surface which engages in a part of the displacement of the actuating element in the second direction with a present on the pivotable jaw counter-actuating portion and pivots the pivotable jaw in the Schmidt-Verklamm ceremoniesssinn. This allows a comfortable opening of the clip by means of displacement of the actuating element.
  • This special training can be realized in the clip according to the first paragraph of the application, but also in one or more of the above-discussed, more specific training.
  • the actuating element has a transverse groove, in which the pivotable jaw constantly partially protrudes, so that the end positions of the actuating element in both directions.
  • the actuator is a captive part of the clip.
  • the clip has an eye as a connection point.
  • a directional support for determining the orientation of the level of the formwork panel (often: setting the vertical orientation) or a console can be connected to the formwork panel.
  • This special training can be realized in the clip according to the first paragraph of the application, but also in one or more of the above-discussed, more specific training.
  • bracket 2 for concreting formwork panels - hereinafter "clip" - has five main components, namely a first housing part 4, a second housing part 6, a fixed jaw 8, a pivoting jaw 10, and an actuator 12. These five components are everything plastic parts. In addition, one of the four screws 14 including nut is shown, with which the assembly of these five components and the interconnection of the housing parts 4, 6 is accomplished.
  • the first housing part 4 and the second housing part 6 are identically formed parts.
  • the in Fig. 1 When looking at the clip component that is in Fig. 1 as the first housing part 4 is drawn, rotates 180 ° about the drawn central axis 16 and then displaced parallel to itself, one is in the staple component, the in Fig. 1 is shown as the second housing part 6.
  • Each housing part 4, 6 can be described in view of its outer side as a substantially trapezoidal with attached triangle.
  • the fixed jaw 8 has a claw 18, which is bounded by two wedge-shaped and with a transitional rounded surface.
  • the fixed jaw 8 has two mutually parallel parallel, hollow cylindrical portions 20a and 20b.
  • the hollow-cylindrical regions 20a and 20b respectively protrude with their two end regions beyond the other, fixed jaw 8, so that a total of four protruding, circular-cylindrical pins 22a, 22b, 22c, 22d are formed.
  • the pivoting jaw 10 has a claw 24, which - as in the claw 18 of the fixed jaw 8 - is bounded by two wedge-shaped surfaces converging with a transition rounding. Also, the pivotable jaw 10 has a hollow cylindrical portion 26 with formation of two projecting, circular cylindrical pins 26 a and 26 b at the end portions.
  • the housing parts 4, 6 each have three arranged in series, circular through holes 28a, 28b, 28c.
  • the pins 22a, 22b, 26a which are all located on a first side of the fixed jaw 8 and the pivotable jaw 10, in the through holes 28a, 28b, 28c of the second housing part 6.
  • the pins 22c , 22d, 26b which are all on the other side of the fixed jaw 8 and the pivotable jaw 10, in the through holes 28a, 28b, 28c of the first housing part.
  • Each pin forms with the respective associated passage opening a female-male intervention point.
  • the fixed jaw 8 has two spaced pegs 22a, 22b and 22c, 22d on each side, the four female-male engagement points lock the jaw 8 unschwenkbar in the housing of the clamp 2.
  • the pins 26a and 26b of the pivotable jaw 10, together with the two circular passage openings 28c pivotal mounting of the pivoting jaw 10 is.
  • the actuator 12 has the shape of a rod with a rectangular cross-section.
  • the actuator 12 has in that area, which of the pivoting jaw 10 faces, a transverse groove 30.
  • the running direction of the actuating element 12 is designated by the reference numeral 32.
  • the running direction 32 is at the same time the direction of displacement of the actuating element 12.
  • a claw 24 opposite end portion 34 of the pivoting jaw 10 projects into the channel 30.
  • the groove 30 of the actuating element 12 is at its in Fig. 2 for a part of its depth by a surface 36 which extends at right angles to the direction 32 extends.
  • a surface 36 which extends at right angles to the direction 32 extends.
  • left side of the channel 30 is limited for its entire depth of a surface 38, which also extends at right angles to the direction 32.
  • bottom surface of the surface 36 extends from a wedge surface 40 obliquely to the bottom right in Fig. 2 until you see the in Fig. 2 bottom side 42 of the actuator 12 reaches.
  • the surfaces 36, 38, 40 define the boundaries of the channel 30 which is open to the pivoting jaw 10.
  • the pivoting jaw 10 has, in the region facing the channel 30, an actuating portion 52 realized by an end portion of the pivotable jaw 10 formed by two surfaces converging at an angle and connected by a relatively small radius of rounding.
  • the actuating portion 52 and the wedge surface 40 are positioned or inclined so that upon a displacement of the actuating element 12 in the direction of the arrow 46, the pivotable jaw 10 in the counterclockwise direction in FIG Fig. 2 is pivoted.
  • the contact zone between the wedge surface 40 and the actuating region 52 on the wedge surface 40 moves to the right-bottom in FIG Fig. 2 ,
  • the wedge surface 40 does not have to be plane. Rather, the wedge surface 40 may have such a curved course that toward the end of the pivotal movement of the pivotable jaw 10 in the Verklamm ceremoniess pivoting the displacement paths of the actuating element 12 to achieve a certain pivot angle of the pivoting jaw 10 is greater become. This can be achieved in this final phase in applying a same displacement force on the actuator 12, a greater clamping force.
  • the wedge surface 40 is drawn with transverse to the actuator 12 extending, small grooves. This scoring enhances the anchoring action between the actuating region 52 and the wedge surface 40.
  • the wedge surface 40 and the actuating portion 52 are positioned and aligned so that self-locking exists. Even with such a large pivoting force on the pivotable jaw 10 on the claw 24 in a clockwise direction Fig. 2 engages, it is not possible to move the actuator 12 against the arrow 46 back.
  • the wall 38 of the channel 30 serves as an action surface, which cooperates with displacement of the actuating element 12 against the direction of the arrow 46 with a counter-actuating portion 54 on the pivoting jaw 10 to this clockwise in Fig. 2 to pivot and thus make the clip 2 for removal from a formwork board.
  • upper top 56 of the actuator 12 are in the central region of the length of the actuator 12 deep recesses 58 available. Similar recesses are provided from the underside 42 of the actuating element 12 in each case in the non-topped areas 56 with recesses. In addition, similar recesses 60 can be seen on the back of the pivoting jaw 10. Similar recesses are also present on the back of the fixed jaw 8, but in the Fig. 1 to 3 not visible. With all these recesses is ensured that the plastic parts actuator 12, fixed jaw 8, pivoting jaw 10, nowhere have unhealthy accumulations of material. The same applies to the housing parts 4 and 6, but here such explicit recesses 58, 60 were dispensable.
  • the housing parts 4, 6, the fixed jaw 8, the pivotable jaw 10 and the actuating element 12 are injection-molded parts made of plastic.
  • the plastic can be fiber reinforced. Suitable plastics are familiar to the person skilled in the art. It does not have to be used for all five main components of the staple 2 of the same plastic, z. B. polypropylene can be used for the housing parts 4, 6 and polyamide for the jaws 8, 10 and the actuator 12. It is alternatively possible to provide the jaws 8, 10, possibly also the actuating element 12, made of metal.
  • Fig. 1 to 3 From a synopsis of Fig. 1 to 3 it can be seen that the clamp 2 simply by inserting the fixed jaw 8, the pivoting jaw 10 and the actuator 12 in the first housing part 4, then attaching the second housing part 6, the introduction of four screws 14, which go through four screw 44 and which with in ringkanalenden 62 (see Fig. 3 ) inlaid nuts (not shown) interact, can be assembled in the simplest way. It can be seen further that the housing has only three, from the inside of the housing outwardly leading openings, namely two through openings 64, 66 for the actuator 12 and an opening 68 in a in the Fig. 1 . 2 .
  • Fig. 4 are three formwork panels 102, 104, 106 shown adjacent to each other and a section of a larger overall formwork z. B. for concreting a wall of a building.
  • Each formwork panel 102, 104, 106 can be z. B. in a dimension of 240 x 120 cm imagine.
  • the formwork panels 102 and 104 are vertical with their longitudinal sides and their lateral sides horizontal.
  • the formwork panel 106 is vertical with their transverse sides and their longitudinal sides horizontal.
  • Two brackets 108 clamp the two laterally adjacent formwork panels 102 and 104.
  • the brackets 108 each correspond to a bracket 2 of FIG Fig. 1 to 3 , Wherein the course 32 of the respective actuating element 12 is horizontal.
  • bracket 110 The formwork panel 102 and the upwardly adjacent formwork panel 106 are clamped together by a bracket 110, as well as the formwork panel 104 with the formwork panel 106.
  • Each of the brackets 110 corresponds to a bracket 2 according to FIG Fig. 1 to 3 Here, however, the course 32 of the respective actuating element 12 vertically in Fig. 4 runs.
  • FIG. 3 illustrates how a bracket 2 (or 108 or 110) may be engaged with two adjacent formwork panels 102, 104 from the rear sides 112, 114 thereof and then used to clamp the formwork panels 102, 104.
  • the pivoting jaw 10 is each right in the drawing figures, while they are in the Fig. 1 to 3 on the left in the drawing figures.
  • the formwork panels 102 and 104 are formwork panels each with a pair of metallic edge support 102a, 102b and 104a, 104b and a series of load-bearing elements made of plastic, which each extend from edge support to edge support, are constructed.
  • the formwork panels 102, 104 On the rear side, the formwork panels 102, 104 have areas where the load-bearing elements 116, 118 have recesses 120, 122 such that they can be gripped with the jaws 8, 10 and under a rear-side flange 124, 126 on the respective edge support 102, 104.
  • the bracket 2 is first applied with a part of its contact surface 70 on the back side in an edge region of the formwork panel 102; the pivoting jaw 10 is in the open state with fully or substantially counterclockwise in Fig. 5 tilted state.
  • the brace 2 will go as far to the right in Fig. 5 shifted that the fixed jaw 8 engages with its claw 18 behind the flange 124 and rests there.
  • the edge support 104a of the formwork panel 104 is not yet close to the edge support 102b of the formwork panel 102 and not quite close to the contact surface 70 of the bracket 2.
  • the pivoting jaw 10 is clockwise in Fig. 5 pivoted their claw 24 is behind the flange 126 of the edge support 104 a in engagement (see Fig. 6 ).
  • the edge support 104a is pulled with Verklamm réelleskraft against the edge support 102b and against the contact surface 70 (see Fig. 7 ).
  • the formwork panels 102, 104 have been clamped together in a simple manner and safely.
  • Fig. 8 is illustrated as the parenthesis 2 of Fig. 1 to 3 in its other possible function, namely to create a connection point on a formwork panel, is used.
  • the end region of a directional support 200 which is connected to the bracket 2.
  • the end portion of the directional support 200 has two plate-shaped connecting portions 202, which are substantially triangular in plan view with a rounded corner at the end and have a clearance 204 from each other slightly larger than the width of the already mentioned above, triangular housing portion 206 above the Trapezoidal housing portion of the housing parts 4, 6 is.
  • the triangular housing region 206 has an eye in the form of a circular through-opening 208 in the center.
  • Each of the two connection regions 202 likewise has a circular through-opening 210, the two through-openings 210 being aligned with one another.
  • a circular cylindrical pin 212 through the two through holes 210 and the through hole 208 (which is half of the first building part 4 and the other half of the second building part 6) plugged and then secured at both ends, z. B. each by a split pin. In this way, one has a hinge connection between the bracket 2 and the Richt saliva 200th
  • the triangular connection areas are integrally combined at their base by a plate-like base portion 214. From the base region 214 the directional support 200 merges with a gradual transition into a circular cross-sectional shape.
  • the directional support 200 is connected to a bracket 110 and from there diagonally down to a surface 224 on which the formwork panels 102, 104, 106 are placed. There, the other end portion of the directional support 200 is fixed.
  • the brackets 110 thus serve at the same time for clamping of adjacent shuttering panels as well as to provide a connection point for the Richt al.
  • FIG. 4 schematized another bracket 220 shown with vertical course 32, which is attached to the back of the shuttering panel 104 at a point where it does not clamp two adjacent shuttering panels together, but alone a connection point for z.
  • FIG. 4 creates a directional support 200 or attached to the wall formwork console. It is also in Fig. 4 with broken lines another possible location for a clip 222 with vertical course 32 drawn in broken lines. While the clamp 220 laterally sat next to the edge bearer 104b of the formwork panel 104, the clamp 222 sits, as it were, with part of its width on the edge supports 102b and 104a of the formwork panels 102, 104.
  • brackets 220 and 222 can not cooperate in such a way with edge beams 102b and 104a, as shown by the Figures 5 . 6, 7 has been described, the formwork panels 102 and 104 at the relevant location where the brackets 220 and 222 are to be mounted, lowered areas have, which are lowered relative to the other back 112 and 114, respectively.
  • An example of the formation of such lowered areas can be seen in the Fig. 5 . 6, 7 because of the respective sloping bottom wall 226.
  • These lowered areas or recesses 120, 122 are in front of and behind the plane of the drawing Fig.
  • Fig. 9 Based on Fig. 9 a modified construction will be illustrated.
  • the construction of the drawn bracket 2 is equal to the construction of the clip 2 of, except for the differences to be described below Fig. 1 to 3 and 5 to 8 , Unlike Fig. 1 to 3
  • the fixed jaw 8 is left in Fig. 9
  • the pivoting jaw 10 right in Fig. 9
  • the parenthesis 2 is compared with Fig. 1 viewed from the other side.
  • the difference to be described is that the pins 22a, 22b, 22c, 22d, 26a, 26b are no longer integrally formed with the respective jaw 8 and 10, respectively, but are provided by separately produced bolts 230.
  • the bolts 230 may be made of metal or plastic. These are hollow bolts 230.
  • Each bolt 230 has a slightly reduced outer diameter in both axial end regions, so that shoulders 232 are formed.
  • the smaller outer diameter end portions 234 are located in the housing openings 28a, 28b, 28c; due to the shoulders 232, the bolts 230 are fixed in the axial direction. End portions 234 form female-male engagement locations with openings 28a, 28b, 28c. Based on the diction of the claims, the bolts 230 are attributable to the jaws 8 and 10, respectively.
  • the pivoting movement may take place either between the pivoting jaw 10 and the associated bolt 230 or between the end portions 234 and the two openings 28c.

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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)
EP11162504A 2011-04-14 2011-04-14 Pince pour tableaux de coffrage de béton Withdrawn EP2511446A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11162504A EP2511446A1 (fr) 2011-04-14 2011-04-14 Pince pour tableaux de coffrage de béton

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11162504A EP2511446A1 (fr) 2011-04-14 2011-04-14 Pince pour tableaux de coffrage de béton

Publications (1)

Publication Number Publication Date
EP2511446A1 true EP2511446A1 (fr) 2012-10-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11162504A Withdrawn EP2511446A1 (fr) 2011-04-14 2011-04-14 Pince pour tableaux de coffrage de béton

Country Status (1)

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EP (1) EP2511446A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8514233U1 (de) * 1985-05-14 1986-02-27 Hünnebeck GmbH, 4030 Ratingen Vorrichtung zum Ausrichten nebeneinander angeordneter Schalungselemente
DE3724872C1 (de) * 1987-07-28 1988-10-27 Maier Josef Befestigungsklammer zum Verbinden der Randstege von Schaltafeln
EP0404198A1 (fr) 1989-06-23 1990-12-27 Niels Dipl.-Ing. Hollmann Raccord pour coffrages à bâti

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8514233U1 (de) * 1985-05-14 1986-02-27 Hünnebeck GmbH, 4030 Ratingen Vorrichtung zum Ausrichten nebeneinander angeordneter Schalungselemente
DE3724872C1 (de) * 1987-07-28 1988-10-27 Maier Josef Befestigungsklammer zum Verbinden der Randstege von Schaltafeln
EP0404198A1 (fr) 1989-06-23 1990-12-27 Niels Dipl.-Ing. Hollmann Raccord pour coffrages à bâti

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