DE102021122842B3 - Quick-action clamping nut for clamping formwork walls of a concrete wall formwork against each other - Google Patents

Abstract

The invention relates to a quick-action clamping nut (10) for clamping formwork elements (27) of a concrete wall formwork against one another, the quick-action clamping nut (10) being attachable to an anchor rod (1) of the concrete wall formwork, with at least two to an internal thread (2) of the quick-action clamping nut (10 ) Threaded parts (3, 4) that can be assembled, with the internal thread (2) corresponding to an external thread (5) of the anchor rod (1) in order to move or adjust the quick-action clamping nut (10) on the anchor rod (1) along its longitudinal direction, the threaded parts (3, 4) of the quick-action clamping nut (10) being connected to one another so that they can be swiveled or folded relative to one another in order to move between a positioning or open position (6) in which the threaded parts (3, 4) can be placed on the anchor rod ( 1) are unfolded, and an engaged or closed position (7) in which the threaded parts (3, 4) are folded together and form the internal thread (2) to be moved. According to the invention, the quick-action clamping nut (10) has outwardly projecting, preferably diametrically opposed, wings (9) opposite the threaded parts (3, 4) for a tool to grip the wings (9) for fixing or loosening the quick-action clamping nut (10) on the formwork wall on.

Description

The invention relates to a quick-action clamping nut for clamping formwork elements of a concrete wall formwork against one another, according to the preamble of claim 1.

The concrete wall formwork used in the construction sector is made up of formwork elements with a formlining. The formwork elements are supported and aligned, for example, by props.

Any concrete pressure that occurs is absorbed by formwork anchors in such a double-skinned formwork. The formwork anchors have an anchor rod which is guided through through-holes in the formwork elements and which is fastened to the formwork elements by means of anchor rod attachments, for example anchor nuts or clamping nuts.

The formwork tie is therefore a connecting element that connects two formwork elements to one another. When pouring the concrete between the formwork elements, the concrete does not yet have the strength of the later component, but exerts pressure on the formwork. When forming a wall, the formwork elements, which are usually vertical, are connected to one another. The tie rod of the formwork tie is essentially inside the concrete component.

As a rule, the formwork tie consists of several parts. The actual load transfer function is performed by a steel threaded rod, the tie rod. It protrudes from the formwork through a hole on each side, where it is secured on the outside, for example with an anchor nut or quick-locking nut. Furthermore, an anchor plate can be provided on each side of the formwork for resting the anchor nut or quick-locking nut on the formwork element.

After the concrete has hardened, the formwork elements are removed, whereby the formwork anchors must first be loosened and removed.

Such a formwork anchor with anchor rod for a concrete wall formwork with formwork elements is from DE 10 2012 203 678 A1 known. A fastening device for the anchor rod of the formwork anchor has a threaded sleeve with a screw-in channel that provides an internal thread for screwing in the anchor rod. Furthermore, a threaded nut coupled to an anchor plate at least in an axial direction is provided, which forms a thread pairing with the threaded sleeve.

Known quick-clamping nuts can be used in particular to be arranged on a threaded rod serving as a threaded element in order to brace the formwork walls against one another, the gap between which is to be filled with concrete, for example.

the EP 1 854 941 A2 discloses such a quick-action nut in which the two threaded parts are accommodated in a nut cage and can be displaced in the nut cage from the engaged position into the positioning position against the elastic restoring force of a spring element. This known quick-locking nut has a complicated structure with many individual parts and is difficult to use.

From the DE 20 2019 104 279 U1 a nut is known which can be moved to a certain point on a threaded rod in order to clamp or release a workpiece. The nut includes a clamping nut that can be clamped to and released from a threaded rod. The tightening nut has first and second tightening bodies and a C-shaped elastic body. With the help of the elastic force of the C-shaped elastic body, the clamping nut is to be tightened or loosened on the threaded rod. The disadvantage is that applying a tool for tight clamping or for simple loosening is almost impossible, since the clamping nut has no contact points for the tool. Furthermore, the individual components, in particular the thread halves and the clamping body, can easily be lost.

From the DE 19 91 256 U discloses a nut that is divided in the axial direction and has a counter-receptacle for clamping formwork parts.

From the GB 524 399 A a nut split in the axial direction is known. The nut may be formed in two parts, the abutting edges of the threads thereon preferably being chamfered. An open-ended cotter pin serves as a pivot and a cotter pin with a cord or chain connected to the eyelet is used to fasten the parts together.

Based on the disadvantages described above, the invention is based on the object of specifying a quick-action clamping nut of the type mentioned at the outset, which is simple in construction and easy to operate and also ensures a secure hold.

This object is achieved with a quick-action clamping nut according to claim 1.

presentation of the invention)

The invention relates to a quick-action clamping nut for clamping formwork elements of a concrete wall formwork against one another, the quick-action clamping nut being attachable to an anchor rod of the concrete wall formwork, with at least two threaded parts which can be combined to form an internal thread of the quick-action clamping nut, the internal thread corresponding to an external thread of the anchor rod in order to fasten the quick-action clamping nut to move or adjust the anchor rod along its longitudinal direction. The threaded portions of the quick-action nut are pivotally or hingedly connected relative to each other to be moved between a positioning or open position in which the threaded portions are swung open for seating on the tie rod and an engaged or closed position in which the threaded portions are swung together are and form the internal thread.

The solution according to the invention is therefore based on the concept of folding or pivoting the threaded parts between the engaged position (closed position) and the positioning position (open position) relative to one another in order to transfer the quick-action clamping nut from the engaged position to the positioning position and from the positioning position to the engaged position .

The threaded parts can be foldable relative to one another about a folding axis running approximately parallel to a longitudinal axis of the anchor rod when the quick-action clamping nut is arranged on the anchor rod.

The folding angle by which the threaded parts are folded relative to one another is preferably kept as small as possible in order to be able to carry out the folding movement required for the transfer between the engaged position and the positioning position in the shortest possible time.

In the positioning position, i.e. open position, the quick-action clamping nut is placed on the tie rod at any point, preferably near the formwork element, and transferred to the engaged position (closed position). Then the quick-locking nut is slidably or rotatably arranged on the anchor rod. This shifting or twisting is possible independently of the movement of the anchor tip.

According to the invention, the quick-action clamping nut has outwardly projecting wings, preferably diametrically opposite the threaded parts, for a tool to engage the wings for fixing the quick-action clamping nut to the formwork element or the formwork wall.

The wings serve as haptic elements for loosening or fixing the nut. Because the operator can grip it and move the quick-action clamping nut along the longitudinal direction of the anchor rod, in particular twisting it. The wings can be arranged diametrically opposite one another for better gripping of the wings by the operator.

It is also conceivable to attach a tool to the wings in order to turn the quick-action nut.

Due to the arrangement of the wings, the force for adjusting the quick-action clamping nut is applied evenly, which prevents the nut from tilting or jamming on the tie rod.

The quick-locking nut can be designed for tie rod diameters of, for example, 15 mm or 18 mm. Of course, other sizes are also conceivable. Provision can also be made for the quick-action clamping nut to be moved on an anchor rod without an external thread or only with a half-thread.

Due to the pivotable or foldable connection of both threaded parts, preferably by means of a hinge, there is also a protection against loss, since the individual threaded parts are already connected to one another before use, i.e. before attachment to the anchor rod. In the prior art, on the other hand, individual threaded parts are provided, which are clamped to the anchor rod by means of an additional tensioning element. These components are not secured against loss prior to assembly, i.e. they are connected to one another.

According to a first advantageous embodiment of the invention, a wing is arranged on a threaded part. In this way, a non-positive connection of a tool with the quick-action nut can be achieved at two points on the quick-action nut via the wings. This also allows a comparatively high force to be applied to fix or loosen the nut.

According to the invention, the wings are designed in the form of rods or bolts and have a full or partial thread at least in some areas in order to connect a tool with a corresponding mating thread for tightening or loosening the quick-action clamping nut to the quick-action clamping nut in a non-positive manner.

For example, a tube can be attached to the wings to insert the quick-action nut easy to fix or loosen. The wings allow the use of a striking tool, although a 90 degree offset wing would also be conceivable. The tube could be telescopic.

The tube or tool for fixing or loosening the quick-action nut can preferably be screwed onto the wings. The wing can easily be lengthened with a tube so that the introduction of force into the quick-action clamping nut for loosening or fixing is improved. A telescoping tube with an internal thread can also be provided for vibration-free, ergonomic tightening and loosening of the quick-action clamping nut. This prevents a tool, for example a nail iron, from slipping off, as is the case with known wing nuts, so that the risk of injury, for example bruises or abrasions, is significantly reduced.

In a development of the invention, the rod-shaped or bolt-shaped wings have a length of about 5 cm to 6 cm and a diameter of about 15 mm to 18 mm.

A further variant of the invention provides that the threaded parts are formed from two, preferably identical, halves of a long nut, in particular a hexagonal long nut. This is advantageous because the same parts are used, which reduces the manufacturing costs and allows easy replacement of the parts. The quick-clamping nut can also be pre-assembled in a simple manner, since it is only a matter of plug-in parts. The threaded parts can have a length of about 5 cm to about 10 cm.

According to a development of the invention, the quick-clamping nut has a hinge, by means of which the two threaded parts are pivotably or foldably connected to one another in order to be moved between the positioning or open position and the engaged or closed position. The hinge can be attached, for example welded, to the corresponding outer sides of the threaded parts.

According to a further embodiment of the invention, the hinge is formed by insertion openings arranged on the threaded parts for inserting or pushing through a bolt or cotter pin serving as a pivot or rotary axis, about which the threaded parts are arranged to be movable relative to one another. Each of the threaded portions may have at least one spigot, with the spigots being aligned to allow the bolt or cotter pin to pass through all of the spigots for easy formation of the hinge. A so-called folding bolt can be provided, which is secured on the threaded parts after it has been inserted into the receptacles.

It is particularly advantageous, especially in the case of several engagement openings per threaded part, that the insertion openings of one threaded part and the insertion opening of the other threaded part are arranged alternately to form the hinge. In this way, a secure and stable connection of the threaded parts is realized in particular with several insertion openings of a threaded part, the threaded parts also being pivotable and foldable relative to one another.

Provision can be made for the bolt to be in the form of a plug-in screw, preferably with a lock nut. This is particularly advantageous since this provides a safeguard against loss. In addition, the assembly time when attaching to the anchor rod is reduced.

According to a further advantageous embodiment of the invention, the two threaded parts, preferably on the side of the threaded parts opposite the insertion openings for forming the hinge, each have at least one receptacle designed as a further insertion opening for a further socket pin or cotter pin, the threaded parts being held in the closed position by means of the can be locked in the receptacles introduced locking pin or cotter pin.

As described, the quick-locking nut is placed on the tie rod in the positioning or open position and then closed and shifted in the direction of the formwork elements or walls in order to brace them against one another. To prevent accidental opening of the threaded parts, they are secured in the closed position. A safety bolt can be inserted into the mounts for this purpose. In particular, it is conceivable that this security is formed by insertion openings on the threaded parts, as they are also provided to form the hinge. In this way, the manufacturing costs can be significantly reduced through the use of identical parts.

An embodiment of the invention is particularly advantageous in which the quick-action clamping nut has at least one grub screw for fixing and securing the quick-action clamping nut on the tie rod, wherein the at least one grub screw can be screwed into a through-thread in the at least one threaded part in the direction of the tie rod in order to secure the quick-action clamping nut on the tie rod to set.

In this way, a non-positive connection with the anchor rod is achieved, which means that intentional turning of the quick-locking nut on the tie rod backwards and forwards is prevented. In addition, a specific dimension can be set very precisely, in particular with millimeter precision, and secured permanently.

In addition, there is also a self-locking feature. No additional dimensional checks are necessary.

In addition, the permanent setting of a desired or previously determined length is advantageous, which does not have to be changed, adjusted or checked over several uses, for example.

A variant of the invention is advantageous in which the edges of at least one end, preferably both ends of the quick-action clamping nut is or are rounded, in particular where a contact surface of the quick-action clamping nut is rounded or arched for contact with an anchor plate. This at least one rounded end ensures a better, in particular full-surface, contact with the supplementary anchor plate in order to ensure optimal absorption of forces. A quick-action clamping nut rounded on both sides is also conceivable for better, non-confusable attachment to the anchor against the formwork panel and the replacement of possibly damaged links. The rounded ends of the quick-release nut also reduce the risk of injury from sharp edges.

According to an advantageous embodiment of the invention, at least one anchor plate is slit on one side.

By slotting the anchor plate on one side and in particular by inserting it slightly offset from the central axis, the anchor plate always rests hanging on the anchor rod and cannot fall down, even in the event of unintentional mechanical influence by third parties.

This is the "washer" also called "anchor plate". This should also be slit on one side in order to retain the advantage of being placed on the side over the anchor rod. The anchor plate may be square in shape and/or reinforced by stamped corner ribs.

It is particularly advantageous that the quick-clamping nut has a captive lock for the bolt, which is formed by an eyelet arranged on the bolt and on a threaded part, the two eyelets being connectable to one another by a preferably flexible cable. This prevents the plug-in parts for forming the quick-action nut from getting lost during assembly or during operation.

The quick-clamping nut and/or the bolts or cotter pins can be made of steel.

Further goals, advantages, features and application possibilities of the present invention result from the following description of an exemplary embodiment with reference to the drawing. All the features described and/or illustrated form the subject matter of the present invention, either alone or in any meaningful combination, even independently of their summary in the claims or their back-reference.

• 1 eine erfindungsgemäße Schnellspannmutter mit Ankerstab in einer Eingriffs- oder Schließstellung,
• 2 die Schnellspannmutter gemäß 1 in einer Positionier- oder Offenstellung,
• 3 die Schnellspannmutter gemäß 1 mit einer Ankerplatte,
• 4 die Schnellspannmutter gemäß 3 mit gewindeaufweisenden Flügeln und
• 5 eine Schnittdarstellung der Schnellspannmutter gemäß 1, angeordnet an einer Schalungswand einer Betonwandschalung,
• 6 eine erfindungsgemäße Schnellspannmutter mit abgerundeten bzw. gewölbten Kontaktflächen.

Some of them show schematically:

• 1 a quick-clamping nut according to the invention with an anchor rod in an engaged or closed position,
• 2 the quick-release nut according to 1 in a positioning or open position,
• 3 the quick-release nut according to 1 with an anchor plate,
• 4 the quick-release nut according to 3 with threaded wings and
• 5 according to a sectional view of the quick-action nut 1 , arranged on a formwork wall of a concrete wall formwork,
• 6 a quick-action nut according to the invention with rounded or curved contact surfaces.

Components that are the same or have the same effect are provided with reference symbols in the following figures of the drawing based on an embodiment in order to improve legibility.

Out 1 discloses a quick-action clamping nut 10 for clamping formwork elements 27, for example formwork walls, of a concrete wall formwork 28 against one another, it being possible for the quick-action clamping nut 10 to be attached to an anchor rod 1 of the concrete wall formwork, which is guided through through-holes in the formwork elements 27 and protrudes from the formwork elements 27.

Out 5 shows a concrete wall formwork 28 with formwork elements 27 for concreting concrete walls or buildings. The two sides of a concrete wall are usually each formed by means of a formwork element 27 . The concrete pressure that occurs when pouring the concrete is taken up by so-called formwork anchors 29 in such a double-skinned formwork. Such a formwork anchor 29 can have a quick-action clamping nut 10 and an anchor plate 22, as also in 5 is shown. The formwork anchor 29 is therefore a connecting element that connects two formwork elements 27 to one another.

5 shows the quick-release nuts 10 attached to the anchor rod 1, which brace the formwork walls 27 of the concrete wall formwork. In the space between the formwork walls 27 concrete is poured.

In 2 the quick-action clamping nut 10 is shown without the tie rod 1. The quick-action clamping nut 10 has at least two threaded parts 3, 4 that can be combined to form an internal thread 2 of the quick-action clamping nut 10, with the internal thread 2 corresponding to an external thread 5 of the anchor rod 1 in order to move or adjust the quick-action clamping nut 10 on the anchor rod 1 along its longitudinal direction .

The threaded parts 3, 4 are formed from two, preferably identical, halves of a long nut, in particular a hexagonal long nut.

As in particular the representation according to 2 further shows, the threaded parts 3, 4 of the quick-action clamping nut 10 are connected to one another so that they can be pivoted or folded relative to one another, in order to switch between a positioning or open position 6, in which the threaded parts 3, 4 are opened up for placement on the anchor rod 1, and an engagement - or closed position 7, in which the threaded parts 3, 4 are folded together and form the internal thread 2 to be moved. In order to ensure the pivoting or folding of the threaded parts 3, 4, the quick-action clamping nut 10 has a hinge 8, by means of which the two threaded parts 3, 4 are connected to one another in order to be moved between the positioning position 6 and the engaged position 7.

The quick-clamping nut 10 is placed in the positioning position 6 at any point, preferably near the formwork element, on the anchor rod 1 and then transferred to the engaged position (closed position) 7 . The quick-action clamping nut 10 is then arranged on the anchor rod 1 so that it can be displaced or rotated. It can be shifted or rotated in the direction of the formwork elements 27 in order to brace these elements 27 against one another.

The quick-clamping nut 10 is moved or rotated on the tie rod 1 in a particularly simple manner by means of wings 9 which project outwards from the threaded parts 3, 4 and are diametrically opposite in the present case, so that a tool can grip the wings 9 in order to fix or loosen the quick-clamping nut 10 on the formwork element 27.

The wings 9 serve as haptic elements for loosening or fixing the nut 10. Because the operator can grip it and move the quick-action clamping nut 10 along the longitudinal direction of the anchor rod 1, in particular twisting it. For better gripping of the wings 9 by the operator, the wings 9 can be arranged diametrically opposite one another on the threaded parts 3, 4.

It is also conceivable to attach a tool to the wings 9 in order to turn the quick-action nut 10 . For example, a pipe tool could be placed on the wings 9 to move the quick release nut 10 more easily.

In the present case, a wing 9 is arranged on a threaded part 3, 4, like the 1 , 2 , 3 , 4 and 5 show.

The wings 9 are designed in the embodiment shown rod or bolt-shaped and can, like 5 shows, have a full or partial thread 26 at least in regions in order to connect a tool with a corresponding counter-thread for tightening or loosening the quick-action clamping nut 10 to the quick-action clamping nut 10 in a non-positive manner. In the present embodiment according to 4 the free ends of the wings 9 are bolt-shaped without an external thread. In the present case, the external thread 26 follows after about 2-3 cm. In this way, a striking tool, such as a hammer, can be used to engage the wings 9 without damaging the thread. A corresponding lever tool, which can be operated safely, can be screwed onto the external thread 26 .

The rod or bolt-shaped wings 9 can have a length of about 5 cm to 10 cm and a diameter of about 15 mm to 18 mm.

According to an embodiment that is not shown, it is conceivable that the wing 9 is offset.

how 2 shows, the hinge 8 is formed by insertion openings 14 arranged on the threaded parts 3, 4 for inserting or pushing through a bolt 13 or cotter pin serving as a pivot or rotation axis, about which the threaded parts 3, 4 are arranged movable relative to one another.

how 2 further shows the insertion openings 14 of a threaded part 3 and the A plug-in opening 14 of the other threaded part 4 to form the hinge 8 arranged alternately.

It is conceivable that the bolt 13 is designed as a plug-in screw 15, preferably with a lock nut 16.

how 1 shows, the two threaded parts 3, 4 each have a receptacle 19 for a further locking pin or cotter pin 11, preferably on the side opposite the insertion openings 14, the threaded parts 3, 4 being in the closed position 7 by means of the inserted into the receptacles 19 Socket pin or cotter pin 11 can be locked.

As described, the quick-locking nut 10 is placed on the anchor rod 1 in the positioning or open position 6 and then closed and shifted in the direction of the formwork elements or walls 27 in order to brace them against one another. To prevent accidental opening of the threaded parts 3, 4, they are secured in the closed position 7. A safety bolt 11 can be introduced into the receptacles 19 for this purpose. In particular, it is conceivable that this security is formed by insertion openings 19 on the threaded parts 3, 4, as are also provided to form the hinge 8. Conversely, the hinge 8 can also be formed like the locking mechanism according to FIG 1 . In this way, the use of identical parts is possible, as a result of which the overall production costs can be further reduced.

Out 2 a further embodiment emerges, the quick-action clamping nut 10 having at least one grub screw 12 for fixing and securing the quick-action clamping nut 10 on the anchor rod 1 . The at least one grub screw 12 can be screwed into a through thread 20 in the at least one threaded part 3 , 4 in the direction of the anchor rod 1 .

How out 4 As can further be seen, the edges of at least one end, preferably both ends 17, 18 of the quick-action clamping nut 10 are rounded, in particular a contact surface 21 of the quick-action clamping nut 10 is rounded or curved for contact with an anchor plate 22. A corresponding recess, for example a corresponding “dent”, can be provided on the anchor plate 22, into which the rounded end of the quick-action clamping nut 10 engages, in order to ensure optimal introduction of the tensile forces. This is also particularly advantageous when the quick-action clamping nut 10 does not act perpendicularly on the anchor plate 22 .

In a further embodiment according to 3 and 4 at least one anchor plate 22 is slotted on one side. Slitting the anchor plate 22 on one side and in particular by inserting it slightly offset from the central axis ensures that the anchor plate 22 always rests hanging on the anchor rod 1 and cannot fall down even in the event of unintentional mechanical influence by third parties. In the present exemplary embodiment, the anchor plate 22 is slit over about 2/3 of its length, so that the anchor plate 22 does not fall down due to a shift in the center of gravity when it is placed on the anchor rod 1 .

Like the 1 , 3 and 4 It can further be seen that the quick-action clamping nut 10 has a captive device 23 for the bolt 13, which is formed by an eyelet 24 arranged on the bolt 13 and on a threaded part 3, 4, the two eyelets 24 being formed by a preferably flexible Rope 25 are connected to each other.

Reference List

1

anchor rod

2

inner thread

3

threaded part

4

threaded part

5

external thread

6

positioning or open position

7

engagement or closed position

8th

connector

9

wing

10

quick release nut

11

additional socket pin or cotter pin

12

grub screw

13

bolt

14

insertion opening

15

socket screw

16

locknut

17

first end quick release nut

18

second end quick release nut

19

recording

20

through thread

21

contact surface

22

anchor plate

23

loss protection

24

eyelet

25

Rope

26

full or partial thread

27

formwork element

28

concrete wall formwork

29

formwork anchor

Claims (14)

Quick-action clamping nut (10) for clamping formwork elements (27) of a concrete wall formwork against one another, the quick-action clamping nut (10) being attachable to an anchor rod (1) of the concrete wall formwork, with at least two threaded parts ( 3, 4), the internal thread (2) corresponding to an external thread (5) of the anchor rod (1) in order to move or adjust the quick-action clamping nut (10) on the anchor rod (1) along its longitudinal direction, the threaded parts ( 3, 4) of the quick-action clamping nut (10) are connected to one another so that they can be swiveled or folded relative to one another in order to switch between a positioning or open position (6) in which the threaded parts (3, 4) are folded out for placement on the anchor rod (1). , And an engaged or closed position (7), in which the threaded parts (3, 4) are folded together and form the internal thread (2) to be moved, the quick-action nut (10) relative to the thread deteile (3, 4) outwardly protruding, preferably diametrically opposed wings (9) for engaging a tool on the wings (9) for fixing or loosening the quick-action clamping nut (10) on the formwork wall, characterized in that the wings ( 9) are designed in the form of rods or bolts and have a full or partial thread (26) at least in some areas in order to connect a tool with a corresponding counter-thread for tightening or loosening the quick-action clamping nut (10) to the quick-action clamping nut (10) in a non-positive manner. quick-release nut (10). claim 1 , characterized in that in each case one wing (9) is arranged on a threaded part (3, 4). quick-release nut (10). claim 1 , characterized in that the rod or bolt-shaped wings (9) have a length of about 5 cm to 10 cm and a diameter of about 15 mm to 18 mm. Quick-release nut (10) according to one of Claims 1 until 3 , characterized in that the threaded parts (3, 4) are formed from two, preferably identical, halves of a long nut, in particular a hexagonal long nut. Quick-release nut (10) according to one of Claims 1 until 4 , characterized in that the quick-clamping nut (10) has a hinge (8) by means of which the preferably two threaded parts (3, 4) are connected to one another in order to be moved between the open position (6) and the closed position (7). quick-release nut (10). claim 5 , characterized in that the hinge (8) is formed by insertion openings (14) arranged on the threaded parts (3, 4) for inserting or inserting a bolt (13) or cotter pin serving as a pivot or rotation axis, around which the threaded parts (3, 4) are arranged to be movable relative to one another. quick-release nut (10). claim 6 , characterized in that the insertion openings (14) of one threaded part (3) and the insertion opening (14) of the other threaded part (4) to form the hinge (8) are arranged alternately. quick-release nut (10). claim 6 , characterized in that the bolt (13) is designed as a plug-in screw (15), preferably with a lock nut (16). Quick-release nut (10) according to one of Claims 6 until 8th , characterized in that the two threaded parts (3, 4), preferably on the side opposite the insertion openings (14), each have at least one receptacle (19) designed as a further insertion opening for a further socket pin or cotter pin (11), the threaded parts (3, 4) can be locked in the engagement position (7) by means of the socket pin or cotter pin (11) inserted in the receptacles (19). Quick-clamping nut (10) according to one of the preceding claims, characterized in that it has at least one grub screw (12) for fixing and securing the quick-clamping nut (10) on the anchor rod (1), which has a through-thread (20) in the at least one threaded part ( 3, 4) can be screwed in the direction of the anchor rod (1). Quick-clamping nut (10) according to one of the preceding claims, characterized in that the edges of at least one end, preferably both ends (17, 18) of the quick-clamping nut (10) is or are rounded, in particular that a contact surface (21) of the quick-clamping nut ( 10) is rounded or arched for contact with an anchor plate (22). Quick-action clamping nut (10) according to one of the preceding claims, characterized in that at least one threaded part (3, 4) is slit on one side. Quick nut (10) after at least claim 6 , characterized in that it has a captive device (23) for the bolt (13), which is formed by an eyelet (24) arranged on the bolt (13) and on a threaded part (3, 4), the two eyelets (24) can be connected to one another by a preferably flexible cable (25). System comprising at least one quick-action clamping nut (10) according to one of the preceding claims, an anchor rod (1) and/or at least one anchor plate (22), the quick-action clamping nut (10) on the anchor rod (1) of the concrete wall formwork for clamping formwork elements against one another (27) of the concrete wall formwork can be attached.

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