Attachable anchoring system for wall formwork, and method

Abstract

The invention relates to an anchoring system for a wall formwork as well as to a method for suspending the anchoring system on the rear side of a wall formwork while dismantling a wall formwork. In order to accelerate a dismantling process, an anchoring system with an anchoring rod (4) and at least one disengageable locking device is provided. The part of the anchoring system that is pulled out of wall formworks after a concrete wall has been produced comprises a suspension means for suspending on a wall formwork the part of the anchoring system that has been pulled out.

Claims

1. A method for dismantling a wall formwork from a concrete wall, the wall formwork including a holding formwork, a closing formwork and an anchoring system, the anchoring system including an anchoring rod and a locking device attached to one of the holding and closing formworks and that can be secured to the anchoring rod for holding the closing formwork to the holding formwork, the closing formwork and holding formwork defining therebetween a space into which concrete can be poured and hardened to form the concrete wall, and through which space the anchoring rod extends in a first direction, the locking device being engageable with the anchoring rod to prevent removal of the anchoring rod from the wall formwork in a first direction and disengageable from the anchoring rod to permit removal of the anchoring rod from the wall in a direction opposite the first direction, the locking device having associated therewith a stop member movable transversely to the first direction between a first position securing the stop member to the anchoring rod and a second position allowing the stop member to move along the anchoring rod, and the locking device having a hole extending transversely to the first direction and configured to receive the anchoring rod after the anchoring rod has been removed from concrete wall and to hold the anchoring rod to said one of the holding and closing formworks, the method comprising: moving the stop member transversely to the first direction from the first position to the second position to allow the anchoring rod to move relative to the stop member for allowing the anchoring rod to be pulled out of the concrete and the holding and closing formworks, pulling the anchoring rod out of the concrete and the holding and closing formworks, reorienting the pulled-out anchoring rod into side-by-side relationship with the wall formwork, and attaching the pulled-out anchoring rod to said one of the holding and closing formworks by receiving the anchoring rod in the hole of the locking device attached to said one of the holding and closing formworks, such that the anchoring rod will be carried with said one of the holding and closing formworks after the holding and closing formworks have been disassembled with respect to one another.

2. An anchoring system for a wall formwork used to form a concrete wall, the anchoring system comprising: an anchoring rod for holding together a holding formwork and a closing formwork of the wall formwork, which holding formwork and closing formwork form therebetween a space into which concrete can be poured and hardened to form the concrete wall, and the anchoring rod being configured such that it can be removed from the concrete wall and wall formwork after hardening of the concrete wall, and at least one disengageable locking device configured for attachment to one of the holding and closing formworks of the wall formwork, the locking device being engageable with the anchoring rod to prevent removal of the anchoring rod from the wall formwork in a first direction and disengageable from the anchoring rod to permit removal of the anchoring rod from the wall formwork in a direction opposite the first direction, wherein the locking device has a hole extending transversely to the first direction and configured to receive the anchoring rod after the anchoring rod has been removed from concrete wall and to hold the anchoring rod to said one of the holding and closing formworks, whereby the anchoring rod can be held adjacent said one of the holding and closing formworks and carried therewith after the holding and closing formworks have been disassembled with respect to one another; and wherein the locking device has associated therewith a stop member movable transversely to the first direction between a first position securing the stop member to the anchoring rod and a second position allowing the stop member to move along the anchoring rod.

3. The anchoring system according to claim 2, wherein a wing is attached to the anchoring rod and protrudes radially from the anchoring rod.

4. The anchoring system according to claim 2, comprising a graduation on the anchoring rod for use in producing walls of a desired thickness.

5. The anchoring system according to claim 4, wherein the graduation is formed by grooves or bores in the anchoring rod.

6. The anchoring system according to claim 2, further comprising at least one of a cotter pin, a stop wedge, a securing nut, an adjusting member and a sleeve with an outer thread.

7. The anchoring system according to claim 2, wherein an end of the anchoring rod is provided with a nut to facilitate rotation of the anchoring rod.

8. The method according to claim 1, further comprising removably attaching the locking device to said one of the holding and closing formworks.

Description

(1) Advantageous embodiments of the invention are explained in more detail below.

(2) FIG. 1 shows a section of the rear side of a closing formwork with a longitudinal beam 1 and crossbars 2 attached to the rear side of a formwork facing 3. An anchoring rod 4 is pushed into an anchoring rod bore and attached to the longitudinal beam 1 by means of a locking device. The locking device comprises a dome plate 5 to which a sleeve 6 with an outer thread is attached in such a way that the sleeve 6 can be moved in a joystick-like manner relative to the dome plate 5 in order thus to be able to align the sleeve 6 for the anchoring rod 4 in a suitable manner if required. The dome plate 5 is screwed to the longitudinal beam 1 by means of a screw 7. A double-wing nut 8 is screwed on at the end of the anchoring rod 4. The position of the double-wing nut 8 is fixated by a grooved pin 9 that leads into the anchoring rod 4 laterally from a bore of the nut 8 and is held frictionally by means of a press-fit. The double-wing nut makes it easier to screw the pushed-through end of the anchoring rod into a threaded portion of the locking device provided on the side of the holding formwork.

(3) A suspension means 10 disposed adjacent to the double-wing nut 8 is connected to the anchoring rod 4. The two hook-shaped ends 11 of the suspension means 10 can be threaded into upper holes 12 in crossbars in order thus to be able to suspend the anchoring rod together with the locking device, which is visible in FIG. 1, and the double-wing nut 8 after dismantling, primarily ready to hand adjacent to the anchoring rod bore through which the anchoring rod 4 has been pushed.

(4) The locking device comprises an adjusting nut 13, a, for example triple-winged, securing nut 14 with an inner thread that can be screwed onto the outer thread of the sleeve 6. The position of the adjusting nut at a suitable location on the anchoring rod can be fixated by means of a cotter pin 15. The anchoring rod comprises a plurality of bores through which the cotter pin 15 can be pushed. The bores form a graduation in order to be able to simply and quickly align wall formworks for typical wall thicknesses.

(5) A particularly preferred embodiment is shown in the FIGS. 2, 3 and 4.

(6) Using a wing 16 that protrudes perpendicularly from the end of the anchoring rod, a part of the anchoring system that was previously pulled out of the wall formwork can be suspended on a hole 12 of a crossbar 2, as the FIGS. 2 and 3 illustrate. Such a protruding wing 16 is preferably a part of the double-wing wing nut 8 that has been screwed onto the end of the threaded portion 17 of the anchoring rod 4. Each wing 16 has a suspension means with a first downwardly protruding region 18 with a circular diameter. At the lower end of the downwardly protruding region 18 of the suspension means, there is a plate-shaped, flat portion 19 of the suspension means which protrudes laterally from the wing 16 and perpendicularly from the region 18 with the circular diameter. Such a suspension means with the region 18 and the portion 19 can, as FIGS. 2 and 3 also show, be brought into a hole 12 of a side wall, which is accessible from the top, of a horizontally extending crossbar 2 in order thus to suspend the corresponding part of the anchoring system on the rear side of a closing formwork in the desired position in a reliable and stable manner. The region 18 with the circular cross section is adapted to the cross section of a hole 12 and fills it by more than 50% in the suspended state. The underside of each wing 16 is plane so that it is able, as is shown in FIG. 3, to rest flat on a side wall of a crossbar 2. The distance between the anchoring rod 4 with the threaded portion 17 and the suspension means with the region 18 corresponds to the distance of a hole 12 from the rear side 20 of the crossbar 2, so that an anchoring rod 4 with the thread 17 is adjacent to or rests on the crossbar 2 in the suspended state, which stabilizes the position of the suspended anchoring rod 4. As a whole, the part of the anchoring system that is being suspended is held in a stable position on the rear side of a closing formwork. Pivoting movements relative to the closing formwork are thus advantageously minimized.

(7) The wings of the wing nut 8 can be used for manually twisting an anchoring rod at least initially. If the force required therefor increases too much, the head of the wing nut 8 can be twisted using tools.

(8) The threaded portion 17 of the anchoring rod 4 is interrupted at regular intervals by a peripherally extending groove in order to be able to hook in a stop wedge here.

(9) FIGS. 2 and 3 show a hole 22 in the nut 8 into which a grooved pin 9 is driven. FIG. 4 shows a bore 23 in the anchoring rod 4 in which the driven-in grooved pin 9 ends up for fixation. The anchoring rod 4, which is shown in some portions in FIG. 4, comprises a smooth middle region 24 that is allowed to end up in the concrete of a concrete wall to be produced. The end 25 of the anchoring rod adjacent to the threaded portion 21 is advantageously configured in a multi-edged manner in order to be able to twist it additionally, if required, using tools, such as, for example, a spanner.

(10) On one end, the adjusting nut comprises a peripherally protruding flange 26 that serves as a stop for an inwardly directed flange 27 (see FIG. 1). The adjusting nut 13 comprises an inner thread that can be screwed onto the threaded portion 17 of the anchoring rod 4. A stop wedge 28 has a recess with a round region 29 and an elongate further region 30 connected thereto, which tapers towards the end. The threaded portion 17 can be threaded into the round region. The elongate region can be suspended in the grooves 21. The grooves 21 form a graduation in order to be able to make the alignment of wall formworks for typical wall thicknesses quick and easy. In that case, the stop wedge 28 is secured against displacement along the anchoring rod 4.

(11) FIG. 4 shows the components of an anchoring system that are pulled out for dismantling and suspended. In that case, it is generally not necessary, advantageously, to disengage connections between dome plates and wall formworks.

(12) FIG. 5 shows a section of a holding formwork 40 with a locking device 41 attached thereto. On the front side, the holding formwork 40 has a formwork facing 42. The locking device 41 is attached to a longitudinal beam 43 by means of a screw 44 and a bolt 45 that suitably engage holes in the longitudinal beam. The screw 44 is positioned obliquely in such a manner that no threaded portion in the corresponding hole of the longitudinal beam 43 is required for attaching the locking device 41 to the longitudinal beam 43. For connection with an anchoring rod, the locking device 41 is suitably disposed above an anchoring rod bore 46 through which the end 48 of an anchoring rod 4 is pushed for assembly. After the end 48 of an anchoring rod 4 has been pushed through the bore 46, that end 48 is then connected, generally by a screw connection, to the locking device 41.

(13) The locking device has a region 47 through which a bore leads vertically or at least substantially vertically and which is therefore not visible in the FIGS. 5 and 6.

(14) FIG. 6 illustrates that a bore in the corresponding locking device 41 is sufficient in order to realize the advantage that the anchoring system with the anchoring rod 4 can be held ready to hand at a particularly suitable location for an assembly without having to exert any great technical effort. The bore in the region 47 not only makes it possible to attach the part 4, 27 of the anchoring system that can be pulled out to this locking device 41, and thus also to the rear side of the holding formwork 40, if this locking device 41, as shown in FIGS. 5 and 6, is attached to the rear side of a longitudinal beam 43. Furthermore, it is possible to attach the part 4, 27 of the anchoring system that can be pulled out in such a way that, as is shown in FIG. 6, it is held in a stable manner.

(15) The bore is disposed and configured in such a way that the anchoring rod 4 extends substantially vertically in the depicted erected state of the holding formwork 40 when the anchoring rod 4, as is shown in FIG. 6, has been inserted into the bore and the locking device 41 is attached to the rear side of the holding formwork 40.

(16) Furthermore, the bore is configured in such a way that the end 48 of the anchoring rod 4 that is pushed through the bore during dismantling, for example, sets down on a crossbar 49 of the wall formwork 40. As is shown, the end 48 that has been pushed through does not protrude over the rear side the wall formwork 40.

(17) The bore is configured in such a way that, as shown, the anchoring rod 4 includes an acute angle with the rear side of the wall formwork 40 when the anchoring rod 4 has been attached to the locking device 41. The part of the anchoring system that must be grasped for pulling out the part 4, 27 of the anchoring system that can be pulled out is in that case ready to hand in a particularly simple manner.