DK163445B - DEVICE FOR THE COHESION OF THE FORCING ELEMENTS - Google Patents

Description

in

DK 163445 B

The present invention relates to a device for connecting and holding together adjacent formwork elements such as formwork plates, which device has two claws which can be arranged against frame parts of the formwork elements for compression and tensioning of adjacent formwork elements.

For compression and compression of adjacent formwork plates, it is known to use a two-claw device to be mounted from the rear on adjacent formwork plates, which device in the butt joint area between the adjacent formwork plates engages 10 abutting frame parts thereof and compresses them by means of a wedge closure device on the frame members to close the butt joint between the formwork plates. However, a wedge closure device is not always suitable as it can be installed incorrectly and there is a danger that the wedge, when vibrating the concrete cast in the formwork, will loosen, which may weaken the connection between neighboring formwork plates before cast concrete is hardened. Even if the wedge is directed downwards vertically, this can be released by the action of the vibration movements during the casting of the concrete, so that the clamping device completely or partially loses its effect.

20 For adjusting side panels arranged flush with one another, there is also known a device consisting of two interconnecting tubular pieces, and therein provided garden-like claws, which are to be inserted into special holes on the cross beams of the formwork panels to be set in relationship with each other. For tightening the device, an eccentric cam is arranged. A disadvantage of this known device is that it can only be used in connection with such formwork plates where holes are provided for inserting the claws in the cross beams. Furthermore, the mounting of this device is cumbersome and time-consuming, since the formwork plates to be connected to this device must in practice already be adjusted relative to one another before the adjusting device can be mounted.

From BE-A 512 347, a clamping device is known for connecting and holding together side-by-side formwork plates where two clamping trays are arranged which can be clamped against flange-shaped frame parts on the formwork plates, so that the clamping trays can clamp against these frame parts. To this end, the two locking jaws connected to one axis are provided with a through-bolt screw, in which a nut is screwed onto the threaded end so that 2

DK 163445 B

the clamping device can be clamped by tightening with a wrench or can be loosened therewith.

Furthermore, from BE-A 544 320 it is known to use a clamping device having two interconnected and pivotable interconnections by connection and clamping of adjacent formwork plates. arms which can pass through openings in the frame portions of the adjacent formwork plates, which openings align with each other, the free ends of the arms being pushed away from each other by means of a stem spindle which is pivotally mounted and having a threaded engagement, 10 the frame parts can be set in relation to each other and compared. For this purpose, the two arms have opposite recesses, whereby the edges of the openings in the adjacent frame parts can be affected.

The invention has for its object to provide a device for compressing and compressing neighboring shell elements, such as pre-cut plate, which is inexpensive and can be handled in any position and can be easily placed and can place neighboring shell plates in the desired reciprocating position, the device not is loosened under the influence of, for example, the vibration movements occurring in concrete casting, and which device can be easily dismantled again when the formwork is removed.

This task is solved according to the invention with a device of the kind mentioned in the beginning, in that at least one of the two claws for clamping is mounted pivotally about an axis perpendicular to the clamping direction, for adjusting the pivotable claw is arranged at least one path 11 spindle. A device of this kind is robust, simple to handle and easy to operate. It can be mounted on formwork elements such as formwork panels with all kinds of frames, it is also useful to use it in connection with formwork panels, which have grooves in the cross-section corresponding to the tensioning claw on the inside of the surrounding outer frame.

For compressing and compressing neighboring formwork elements, such as formwork plates, the clamps can be pivoted by means of a spindle.

This one is suitably perpendicular to the rear of the 35 formwork plates to be connected to each other and is therefore readily accessible. Also, if it has a self-locking thread, it does not loosen during the vibrational movements of concrete casting, so that impact points between neighboring formwork plates throughout the formwork 3

DK 163445 B

Gene's useful life can be kept safely closed. The device is highly manageable and is thus a useful aid to the formwork designer.

According to a practical embodiment of the invention, the spindle is connected to at least one of the two claws, the claw being pivotally mounted about an axis extending perpendicular to the longitudinal axis of the spindle. The spindle thus transmits the movement thus produced to a pivotally mounted claw. The danger that the device according to the invention slides off during the assembly of the formwork before the claws are fully tightened or clamped is therefore extremely low.

Among these, it is particularly advantageous if the spindle and at least one of the two claws are moved movably in an abutment arranged on another claw, the spindle being guided and pivotally supported on the underside of the hollow shaped abutment and engaging a nut which is pivotally connected 15 to the pivotally mounted claw. According to this embodiment, the device according to the invention consists of only three main parts, namely the two claws, one of which can be pivoted relative to the other, and the spindle which performs the pivoting movement.

However, it is also possible to arrange a spindle for each claw in accordance with the design of the device and the arrangement of the claws. In the case of devices for connection of outer corners, for example, it is often necessary to adjust both claws, for which a separate positioning spindle is generally needed for each claw. Due to its special design, the spindle can follow the movements of a rotatable claw, so that pre-tensioning or clamping of the spindle is impossible without requiring a very precise bearing.

The device according to the invention can be manufactured inexpensive, extremely compact and robustly designed and is therefore not prone to damage. For example, the claws on the device may be made as molded 30 pieces. The interior also has a very long life for hard construction site operations.

At the end of each spindle protruding from the device, an operating clamp pin is readily available which is readily available in any mounting position of the device according to the invention. This clamping pin or pivot may have a convex underside with which it rests against the arrangement of the device in such a way that, in any tilting position of the spindle, it supports it uniformly in addition to the abutment and thus does not impede the tilting movement of the spindle. Furthermore, the rotor rolls 4

DK 163445 B

under the tilting movements of the spindle, so to speak freely on the outside of the device of the device.

According to a further feature of the invention, each claw has two clamping and clamping surfaces at an angle to each other, so that the device according to the invention can be used in connection with both box profile formwork members and box formwork elements of wood. It can also connect formwork elements and lock them together when one is made of wood and the other of metal. If the device according to the invention works with hollow profile formwork plate frames which have embossed recesses for engaging clamping claws, then the corresponding claw of the device with an inclined clamping and clamping surface engages in the corresponding recess on hollow profile and cooperates with a corresponding inclined wall or flank in the recess, while it can have an evenly shaped clamping or clamping surface on the back, for example, on wooden beams or pieces of woodwork on formwork elements.

According to a particularly practical embodiment of the invention, the device has a one-piece traverse in the middle region of which the two claws are arranged with the clamping faces facing each other and there is a weathering axis in the middle region and at the traverse ends, of which the at least the remuneration situated on the outer ends of the traverse extends beyond the two longitudinal sides of the traverse. Such a device for adjusting two neighboring formwork plates to be clamped need not be inserted before the clamping in the frame construction of the formwork elements such as 25 formwork plates which are to be clamped, but with its opposite sloping clamping surfaces, pull the edge profiles on the frames which sit on the frames. formwork elements to be adjusted relative to one another into a plane determined by the traverse, even when the formwork elements prior to clamping do not exactly align but are displaced in relation to each other.

The device can hereby be mounted both above and below the cross beams on the frames of the formwork elements to be connected to each other, the remuneration located on the ends of the traverse extending on both sides sufficiently far beyond the traverse. Also, slight tilting of the device is problematic due to the laterally superior remuneration, ie. the transverse beams on the neighboring sheathing plates on which the traverse transmitters rest do not have to exactly align or lie at a right angle to each other.

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Due to the length of the traverse, it has suitable weight arms for adjusting neighboring formwork elements. Due to the design of the traverse in a single piece, this can not only be manufactured cheaply, but also simply mounted. Furthermore, it is problematic to place the remuneration 5 on one surface of the traverse.

The remuneration is preferably metal sheets of appropriate strength and stability welded to the metal cross members.

Below, it is expedient if at least one of the two claws is mounted stably or slid horizontally on the traverse, i.e. it is sufficient if one of the two claws is adjustable and the other is fixed. In this way, the manufacturing costs for the traverse are kept low. However, a better directional effect is obtained when both clamping claws can be set relative to each other.

For adjusting formwork elements which are adjacent to each other and which must be aligned, the traverse is expedient, straight and elongated, however, according to a further feature of the invention, it may also be formed in angular shape, namely to set formwork elements in the area by corner joints. In this case, on one of the two legs. Twenty of the slightly shaped traverse is an adjustable claw arranged pivotally with its own spindle, so that the frame beams on angular and preferably approximately mutually spaced formwork plates can be gripped with two pivotable claws.

To this end, it is also desirable if each of the adjustable claws 25 grips with an abutment under a nut arranged on the stem spindle one, which nut preferably has a rounded side, while the agile claws, on the abutment gripping under the nut, have a correspondingly rounded recess. This allows proper adjustment of the claws at all times, while preventing the spindles from being clamped during clamping or otherwise posing misfortunes.

The invention provides a device for compressing and compressing and optionally also adjusting neighboring formwork elements such as formwork plates which can be easily handled in any position which does not go loose under the influence of vibrational movements and which compresses all known formwork elements such as formwork panels and wooden beams. and can adjust them in a desired way against each other. The device is simple, extremely robust, compactly designed and convenient to handle.

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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of one embodiment of the device; FIG. 2 is a front view of this device in the direction of the arrow X in FIG. 1, FIG. 3 is a further front view of the device of FIG. 1 in the mounting section, where it holds two adjacent sheathing plates together; FIG. 4 is a front view of another embodiment of the rectangular traverse device; FIG. 5 is a view plotted 90 ° of this device in the direction of the arrow Y in FIG. 4, FIG. 6 is a front view of the device just as in FIG. Figure 4 shows, after 15, the placement of two formwork plates to be adjusted relative to each other and held together side by side; 7 is a schematic view of a further embodiment of the device intended for adjusting two formwork plates arranged in a corner formwork area; FIG. 8 is a front view of the device of FIG. 7 after placing two formwork plates which are at right angles to each other, and fig. 9 shows a part of the front part of a still further embodiment of the device in which two pivotally mounted clamping claws can be pivoted in tensioning with a single steel spindle.

The device 1 shown in Figures 1 to 3 has two opposite claws 2 and 3 which can be adjusted by means of a spindle 4, whereby formwork elements, such as 30 frames 25 and 26 on neighboring formwork plates 23 and 24, can be arranged therebetween. pressed against each other and clamped together.

The two claws 2 and 3 are formed by casting. On the claw 2, an abutment 5 is formed as a hollow body, the outwardly open end 6 of which the other claw 3 protrudes with its lower end 7. The claw 3 is formed as a kind of 35 angular weight arm and has an eye 8, through which a guide pin 9 is stung whose outer ends lie in the sidewalls 10 and 11 of the shoulder 5. The claw 3 is mounted pivotally about the pivot pin 9 in the shoulder 5 and can thus be adjusted relative to the claw 2.

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At the inner end 7 of the claw 3, a block 12 is formed which contains an internal thread which fits on the spindle 4 and on which the spindle 4 sits. As seen in FIG. 2, the block 12 has a rectangular base and fits between the sidewalls 10 and 11 of the strut 5 so that, together with the eye 8 of the pivotable claw 3, which also fits between the sidewalls 10 and 11, provides a lateral guide.

At the end of the spindle 4 which protrudes from the shoulder 5, a clamping arm 13 or pivot is provided, which serves to rotate the spindle 4 and thus to adjust the claw 3. The pivot 10 13 has a convex underside 14 which may lie on the substantially flat exterior surface 15 of the shoulder 5, so that an edge-free contact between the rotor 13 and the shoulder 5, regardless of the position the spindle currently occupies, is always possible.

In the opposite walls 16 and 17 of the shoulder 5, there is arranged a long hole 18 and 19 respectively, the width of which corresponds to the transverse dimensions of the spindle 4, as seen in FIG. 2. The spindle 4 can be moved in the longitudinal direction of the long holes 18 and 19 and thus in the longitudinal direction of the shoulder 5.

For tightening of the movable claw 3, the spindle 4 is rotated by means of the pivot 13 so that the abutment 12 and the internal threaded groove 12 is pulled towards the wall 16 of the abutment 5. If the movable claw 3 encounters resistance, e.g. by a formwork element, by further rotation of the spindle 4, the underside 14 of the pivot 13 is pulled towards the outside 15 of the shoulder 5, through which the clamping force is transmitted.

The convex underside 14 of the pivot 13 ensures that the pivot 13 all the time engages the outside 15 of the shoulder 5 with sufficient contact to the tension without pre-tensioning the spindle 4. Furthermore, the spindle 4 can adjust in the long holes 18 and 19 in the correct position at any time, that is, it can be inclined to the middle axis 20 of the device more or less obliquely.

30 On the outer ends of the lugs 2 and 3 there are arranged two clamping and clamping surfaces 21 and 22, respectively, which extend at an angle to each other. The clamping and clamping surfaces 21 and 22 of the two claws 2 and 3 are opposite each other.

The one clamping or clamping surface 21 lies approximately parallel to the center axis 20 of the device 1 and comes into contact when the claw in question contacts a flat top surface of a formwork element, for example a wooden beam. The second clamping or clamping surface 22 extends at an angle of about 35 'from the center axis 20 of the device and enters

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δ function when the corresponding claw 2 or 3 engages in a recess 27 on the inside of the frame 25 or 26 of a formwork plate 23 or 24, as seen in FIG. 3. The clamping or clamping surfaces 22 extend relatively steeply so that they predominantly exert clamping forces extending 5 perpendicular to the center axis 20 of the frames 25 and 26 which lie between the claws 2 and 3 and can exert a smaller proportion of forces parallel to the center axis. 20. Thus, the forces applied to the spindle 4 are mainly utilized to compress the frames 25 and 26 and to compress the impact site, while a smaller portion of these forces serve to adjust the two interconnected formwork plates 23 and 24, whose frames 25 and 26 lying against the upper side of wall 5 of the shoulder 5, as seen in FIG. Third

FIG. 3 also shows that the claws 2 and 3 are formed so long that their head ends 28 with the clamping and clamping surfaces 21 and 22 are close to the junction planes 29 and 30 on the formwork plates 23 and 24, so that they compress them on the frame. 25 and 26, the upright staging steps 31 and 32 are arranged over a relatively short wall arm and thus close and secure the shock assembly between adjacent sheathing plates.

The spindle 4 lies approximately in the middle axis 20 of the device 1 and thus runs approximately parallel to the two claws 2 and 3. Therefore, the pivot 13 is on the outside 15 of the shoulder 5 which faces away from the formwork planes 23 and 24 and is always light available for operation. The spindle 4 and the block 12 attached thereto are provided with self-locking threads. 4 to 6, arranged for adjusting adjacent side panels 41 and 42, has an elongated traverse 44 in a piece consisting of a metal plate open against one side. At the outer ends of the traverse 44, remuneration 45 and 46 consisting of bent metal plate are welded to the traverse. The remuneration 45 and 46 are on the open side of the traverse 44 and are supported by a leg 45a and 46a, respectively, towards the open end of the traverse 45. FIG. 5 shows that the remuneration with the sides 45b and 45c and 46b and 46c, respectively, protrudes wing-like in addition to the two long sides of the traverse 44. In the middle area of the traverse 44, on the open side, is attached a 35 piece of metal plate 47, which serves as a remuneration, the outside of which is flush with the exterior of the remuneration 45 and 46, so that the traverse 44 has a total of three remuneration lying against the frames of the formwork plates 41 and 42 to be joined, as shown in FIG. 6th

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In FIG. 5 it can be seen that the remuneration 47 laterally projects only a little beyond the traverse 44.

In the embodiment of FIG. 4, at the left-hand end of the remuneration 47, a clamp 48 is secured thereto, which has clamping surfaces 50 and 51 against the center axis 49 of the traverse 44.

On the other side of the center axis 49 of the traverse 44, an additional clamping member 52 is provided with clamping faces 53 and 54 also facing the center axis 49 and the clamping bearing is pivotally mounted about a transverse axis 55. The pivotable claw 52 has on the outer end of it leg 10 52a, which is in the traverse 44, a nut-like shoulder 56 with an internal thread, in which a path 11 of the spindle s 57 external threads fits, which scaffold extends approximately in the middle axis 49 of the traverse 44. At the end of the scaffold 57 protruding out of the traverse 44 through a bottom opening 58, a pivot 59 is provided fixedly which serves to rotate the shaft spindle 57 and thus to pivot the claw 52. The bottom opening 58 is, as seen in FIG. 5, formed as a long hole, so that a mutual movement between the scaffold 57 and the traverse 44 is possible. Through a similar long hole in the remuneration 47, the opposite end of the still spindle 57 is available.

The pivot 59 rests with a convex underside on the outside of the bottom 61 of the traverse 44, but is not directly connected to the traverse 44. The stem spindle 57 is simply screwed into the shoulder 56 of the claw 52 and thus only indirectly over the claw 52 and the axis 55 connected to the traverse. 44 so it can't go off.

Although in Figures 4 to 6 only the clamping claw 52 is movably mounted and the clamping clamp 48 on the traverse 44 is fastened releasably, the clamping claw 48 can also be pivotally mounted in the same manner as the clamping claw 52. For a single path 11 spindle 57 in this embodiment to be sufficient , the leg of the clamping claw 48 located in the traverse 44 is provided with a tongue or other extension, which in the clamping device cooperates with the fitting 56 of the clamping clamp 52, for example protruding between the shoulder 56 and the rotor 59.

In the embodiment of FIG. 7 and 8, the device 62 for adjusting formwork plates arranged in a formwork corner area consists of an angular traverse 63 with a longer leg 64 and a shorter leg 65 arranged perpendicular to each other and interconnected in an angle piece. The legs 64 and 65 of the traverse angles 63 are, as in the embodiment of Figures 4 to 6, formed with a U-shaped cross section. At 10

DK 163445 B

at the free ends of the legs 64 and 65 there are remuneration 45 and 46 of the same design as the corresponding remuneration in the above-described embodiments. Further, a consideration 47 is provided in the corner area of the angular traverse 63.

5 In each leg 64 and 65, a pivotable clamping claw 52 is mounted, the shape and bearing of this claw 52 corresponding to that of claw 52 in Figures 4 to 6, so that a detailed review is not necessary. For each claw 52, a still spindle with pivots 59 is arranged.

10 While in the embodiments of FIG. 4 to 6 for positioning and loosening the device 43 at formwork plates 41 and 42 is sufficient to operate a still spindle 57 over its rotor 59, the device 62 of FIG. 7 and 8, which may be referred to as corner blades, operation of two pivots 59 to place device 62 and 15 pull the two abutting formwork plates 41 and 42 into the corner. To this end, the pivot is first tightened on the leg spindle of the leg 65 and then the pivot on the leg 64 of the corner traverse 63. On the other hand, there is no need to observe any particular order of operation.

In the described embodiments, the clamping surface 51 of the clamping claw 48 extends and clamping surface 54 of the clamping claw 51 extends at an angle of approx. 45 ° from the center axis 49 of the traverse 44 and 63, respectively, 49. By clamping the clamping lugs 48 and 52, these clamping surfaces 51 and 54 are displaced on corresponding inclined face faces 66 which are at the inner sides of the formwork plates 41 and 42, the rim profile 67 being pulled towards the respective 25 traverse 44 and 63, respectively, and the formwork plates 41 and 42 are adjusted in the desired manner.

In the embodiment of FIG. 9, the two clamping claws 52, which are pivotally mounted in the traverse 44 about axes 55, are only indirectly connected to the steel spindle 57.

In this embodiment, a nut 68 is screwed onto the stem spindle 57 which, on the side facing the rotor 59, has a rounding 69. This rounding 69 fits into a bearing-like inwardly curved recess 70 on the leg 52b. is located in the traverse 44 for each of the two pivotally clamped claws 52. By turning the stem spindle 57 in the corresponding direction, the nut 68 moves in the direction of the pivot 59, thereby pushing the leg 52d of the clamping claw 52 towards the bottom 61 of the traverse 44, through which two clamping surfaces 53, 54 of the two pivotal claws 52 are approached.

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Due to the rounded shape of the rounding 69 and the recess 70, sufficient surface contact is always ensured between the nut 68 and the pivotable clamping claw 52.

In order to prevent unscrewing of the spindle 57 from the nut 68, 5, the path 11 of the spindle 57 can be easily extended or provided with, for example, a welded system.

Since in this embodiment the adjusting spindle 57 is not to tilt, the pivot 59 can abut the bottom 61 of the traverse 44 with the full surface.

Claims (10)

A device for connecting and holding together adjacent formwork elements such as formwork plates (23, 24; 41, 42) with two claws (2, 3; 48, 52) which can be adjusted against frame parts (25, 26) of the formwork elements for compression and clamping of adjacent formwork elements, characterized in that at least one of the two claws (3; 52) is pivotally mounted about an axis (9; 55) perpendicular to the position of alignment, and that at least one still spindle (4; 57) is arranged to adjust the pivotal claw. Device according to claim 1, characterized in that the spindle (4) is connected to at least one of the two claws (2, 3), the claw 15 being pivotally mounted about an axis (9) extending in a at right angles to the longitudinal axis of the adjusting spindle (20). Device according to claim 1 or 2, characterized in that the scaffold spindle one (4) and at least one of the two claws (3) can be moved 20 in a guide (5) arranged by another claw (2), the adjusting spindle (4) being tilted on the underside (15) by the hollow formed shoulder (5) and supported there and engaging a nut (12) connected to the pivotally mounted claw (3). Device according to claims 1 to 3, characterized in that each claw (2, 3) has two clamping and clamping surfaces (21, 22) at an angle to each other. Device according to claims 1 to 4, characterized in that the movable claw (3) is formed as an angular arm and in the region at its angle is mounted pivotally on the second claw (2). Device according to claims 1 to 5, characterized in that it has a long traverse (44, 63) in a portion in the middle region of which the two claws 35 (48, 52) are arranged with inclined clamping surfaces (51). , 54) and that in the middle region and at each of the traverse's (44; 63. end regions) there are remuneration respectively (45, 46, 47), of which at least the remuneration (45, 46) located at The outer end of the traverse DK 163445 B extends beyond the longitudinal sides of the traverse (44). Device according to claim 6, characterized in that at least one claw (52) is mounted adjustable with its clamping surface (54) in the longitudinal direction of the traverse (44; 5 63) and that for adjusting the claw (52) at least one scaffold (57, 59) extending approximately perpendicular to the longitudinal direction of the traverse (44; 63). Device according to claim 6 or 7, characterized in that the pile (63) is formed angularly and that on each leg (64, 65) it has a pivotable claw (52). Device according to claims 1 to 8, characterized in that each of the adjustable claws (52) with a stop (52b) engages beneath the nut (68) arranged on the adjusting spindle (57, 59), which nut preferably has a rounded side (69), the adjustable claws (52) of the abutment (52b) gripping below the nut (68) having a corresponding rounded recess (70). Device according to claims 1 to 9, characterized in that the remuneration (45, 46) on the outer ends of the traverse (44; 63) are bent mounted metal sheet pieces. 25 30 35