WO2017097735A1

WO2017097735A1 - Nut, release device, spindle support, and method for supporting an object

Info

Publication number: WO2017097735A1
Application number: PCT/EP2016/079830
Authority: WO
Inventors: Björn ISCHEBECK; Ferdinand Coerschulte
Original assignee: Friedr. Ischebeck Gmbh
Priority date: 2015-12-08
Filing date: 2016-12-06
Publication date: 2017-06-15
Also published as: DE102015121378A1

Abstract

The invention relates to a nut (3) comprising a nut housing (16) through which a through opening (17) extends along a longitudinal center axis (M) and in which an internal thread is formed bordering the through opening (17). According to the invention, for advantageous development, the nut (3) has a toothing (19) along a circumferential direction leading about the longitudinal center axis (M). In addition, the invention relates to a release device (25), in particular for a spindle support. In order to provide an advantageous release device, it is proposed that the release device (25) comprises a gear (27) with a toothing (26), and a gear bearing device (28) by means of which the gear (27) of the release device (25) is rotatably mounted about a gear axis of rotation. Furthermore, the invention relates to a spindle support, at least comprising a spindle, an outer tube (4) and a nut (3), wherein the spindle is/can be inserted at least in longitudinal sections into the outer tube (4), wherein the nut (3) is/can be screwed onto the spindle, wherein the outer tube (4) or an end plate (10) arranged on a longitudinal end of the outer tube (4) has a bearing surface (11), and the nut (3) has a support surface (14) for supporting against the bearing surface (11). It is proposed that the nut (3) is a nut (3) according to the invention, wherein the spindle of the spindle support (1) has an external thread matching the internal thread of the nut (3), and that the spindle support has a release device (25) according to the invention.

Description

description

Nut, release device, spindle support and method for supporting an object

Field of engineering

[0001] According to a first aspect, the present invention relates to a nut, in particular for a spindle support, wherein the nut comprises a nut housing, through which a passage opening extends along a longitudinal axis and in which an internal thread adjoining the passage opening is formed. According to a further aspect, the invention relates to a spindle support. In yet another aspect, the invention relates to a method for supporting an article.

PRIOR ART Spindle supports of the applicant are known in various designs, for example as so-called HV spindle supports and as aluminum spindle supports.

Spindle supports can be used either as an individual prop or as part of scaffolds varied use. Conventionally, such known spindle supports comprise a spindle on which an external thread and an internally threaded nut are screwed, and an outer tube, in which the spindle is inserted in sections. The outer tube or attached to a longitudinal end of the outer tube end plate have a support surface, which preferably shows in use of the spindle support upwards. The nut forms a support surface assigning the support surface for supporting the nut on the outer tube or the end plate. There is no thread engagement between the spindle and the outer tube. The length of the spindle support can be adjusted continuously by turning the nut. In such known Spindle supports can in practice, when the spindle is loaded, prepare for the dismantling of the spindle support loosening the mother difficulties. For example, such difficulties may arise when the spindle support serves to support a concrete slab formwork, after concreting a greater vertical load acts on the spindle support and the

Therefore, mother is pressed correspondingly stronger against an underlying outer tube or its end plate. In order to facilitate the loosening of the mother, it has been observed in practice sometimes that improvised aids are used, such as, for example, on radial projections so-called wings of the nut attacking extension tools or pipes or impact tools, which is perceived as unsatisfactory.

Summary of the invention

Therefore, the present invention seeks to further develop a nut, in particular for a spindle support, and in particular a spindle support advantageous. In particular, the aim is to develop a nut and in particular a spindle support in such a way that the handling, in particular the loosening of the nut on a spindle load under pressure load, ie out of the fastening situation, can be simplified.

Against this background, the invention proposes, with regard to its first aspect relating to a mother, to the solution that the nut, in particular outside, has a toothing along a circumferential direction leading around the longitudinal central axis. Nuts according to the preamble of claim 1, when intended for spindle supports, are also commonly referred to as swivel nuts. In this connection, it is also possible to speak of a swivel nut or of a spindle nut in the case of a nut according to the invention. Under a toothing becomes a Plural understood along the circumferential direction side by side toothing elements, in particular teeth understood. Preferably, the toothing may extend along the entire circumference (alternatively along part of the circumference). By the mother has a toothing, the possibility arises, so that another, a matching

To bring toothing element in meshing or gear engagement to facilitate the release of the mother from the stress situation.

There are numerous other possibilities for the preferred embodiment. The toothing may preferably be arranged on the outside of the nut. For example, it can be arranged along any surface or side of the nut which is oriented radially outwardly and / or transversely, in particular perpendicularly to the longitudinal central axis. Furthermore, there is e.g. the possibility that the toothing, depending on the chosen design of the nut on the nut inside, e.g. on a radially inwardly facing surface or side of the nut is arranged.

The mother may be integrally formed integrally or more parts. There is e.g. the possibility that the toothing is integrally formed on the nut housing or that the toothing, e.g. at another

Part of the mother is formed, which is connected to the mother housing.

It is preferred that the nut housing has a sleeve-like longitudinal portion, around which the toothing extends, wherein the toothing is in particular formed or fixed to the sleeve-like longitudinal portion. The toothing may preferably be adjacent to and in particular dere adjacent to a, in particular outer circumferential surface of the nut, for example, a circumferential surface of its sleeve-like length portion, be arranged. It is considered appropriate that the nut comprises an annular body on which the toothing is formed and which is fastened to the nut housing.

[0010] There is the possibility that the toothing of the nut is designed as a face toothing, as peripheral toothing, as bevel toothing or as crown toothing. Depending on the desired configuration, this makes it possible for the geometrical axes of rotation of the nut and of another element, serving as a release aid, having a toothing, to extend parallel to one another or inclined, in particular perpendicular.

There is the possibility that the nut, in particular the nut housing, comprises a handling portion which connects in the axial direction, in particular in one piece, to the sleeve-like longitudinal portion and which has an annular portion, wherein the annular portion in particular radially outwardly beyond the sleeve-like length portion protrudes. This provides, for example, the possibility that the toothing on or adjacent to an end face of the annular portion, which projects radially outward beyond the sleeve-like longitudinal portion and which are parallel or inclined to a perpendicular to the longitudinal central axis

Level extends, is arranged. It is considered appropriate that the annular body, on which the toothing is formed, in the axial direction adjacent to the annular portion and in particular attached thereto.

In a preferred embodiment, it is provided that the handling portion at the periphery of the annular portion a

Radial projection which extends from the annular portion, in particular special in one piece, starting radially outward extends, or that the handling portion spaced from each other on the circumference of the annular portion has a plurality of radial projections extending from the annular portion, in particular in one piece, starting radially outward. The radial projections, which could also be referred to as wings, facilitate gripping a nut to rotate it in a desired direction. In principle, a rotation in each of the two directions of rotation by means of the radial projections is possible. In addition, there is the possibility of the mother, by means of her teeth and an additional borrowed, having a tooth mesh suitable for further toothing

Solvent in a desired one of the two directions of rotation to twist.

In a preferred embodiment, it is provided that the nut, in particular the nut housing, has a support surface on one end face, it being particularly provided that the nut, in particular the nut

Nut housing, having a support ring which connects in the axial direction, in particular in one piece, to the sleeve-like longitudinal portion at its longitudinal end opposite to the handling portion, which, in particular along the entire circumference, projects radially outward beyond the sleeve-like length portion and on which the Support surface of the mother is formed. The support surface may serve for the axial support of the nut on a further component of a spindle support, for example on an end face of an outer tube or preferably on a nut facing surface of an end plate supported against the outer tube.

According to a further, independent aspect, the present invention relates to a release device, preferably for a spindle support of the type mentioned. In conventional spindle supports are to To facilitate loosening the nut in loaded condition, release devices in the form of extension tools, eg. Pipes, known, which are plugged onto one of the radial projections of the nut for transmitting a torque. In view of the described prior art, the invention with respect to this further aspect, the object of providing an advantageous release device.

To solve the invention proposes according to the second aspect, that the release device comprises a gear having a toothing and a gear bearing means by means of which the gear of the release device is rotatably mounted about a geometric gear axis of rotation comprises. Such a release device can advantageously cooperate with a trained according to the first aspect of the invention mother, which in turn has a toothing. There are numerous possibilities for the preferred development.

It is preferred that the toothing of the toothed wheel is designed as a face toothing, as circumferential toothing, as a screw toothing, as bevel toothing or as a comb toothing. These examples show that various embodiments are possible in which the toothing of the nut and the toothing of the release device for geared cooperation are coordinated with each other. Preferred is an embodiment in which both toothings are designed as bevel teeth. In a preferred embodiment, a respective straight toothing is selected. With regard to the toothing of the nut, it is preferred that its geometry is determined on the basis of a selected module. Also regarding the teeth of the

Dissolving device is preferred that their geometry based on a agreed module is determined. With regard to the toothing of the nut, it is preferred that it has a modulus 2.5 and, for example, 40 or more (eg 47) teeth. Preferably, the pressure angle can be 20 ° and the cone angle about 80 ° (eg. 80.3 °). When toothing the release device, it is preferable that its modulus is 2.25. The number of teeth can be there, for example, about 10 or 10. The pressure angle may be, for example, 20 °. As a cone angle, an angle of about 10 °, for example, 10.9 °, can be selected.

It is considered appropriate that the gear or an axis connected to the gear has a connection for transmitting torque to which a, in particular in its release direction and reverse direction reversible, torque wrench, a ratchet or the like connected or connectable. Preferably, the connection is formed in a cross-section perpendicular to the gear axis of rotation cross-section polygonal or polygon. There is also the possibility that on the

Connection a toothing is formed. Alternatively, a thread or the like could be formed on the connection for fastening a torque transmission means. There is the possibility that the release device has a quick-release device which has a dowel pin which is rotatably supported in the gearwheel bearing device and at whose one longitudinal end a locking element is arranged. There is the possibility that the locking element has at least one surface which extends inclined with respect to a plane perpendicular to the clamping pin longitudinal axis, whereby a clamping, in particular in a groove, can be made possible.

According to a further aspect, the invention relates to a spindle support. This comprises at least a spindle, an outer tube and a nut. The spindle is inserted at least in sections in the outer tube or inserted therein. The nut is screwed or screwed onto the spindle. The outer tube or a front plate arranged at a longitudinal end of the outer tube has a bearing surface. To support off against the support surface, the nut has a support surface.

Against the background of the prior art described above and the associated limitations of the invention in this context, the object of developing such a spindle support advantageous. In particular, the aim is that thereby the handling of the spindle support can be improved and in particular that the loosening of the nut in the loaded state of the spindle support can be simplified.

To solve the problem, the invention proposes according to this further aspect, that it is the mother is a mother having one or more of the features described above, wherein the spindle has a matching to the internal thread of the nut external thread and that the spindle support comprises a release device having one or more of the features described hereabove, wherein the teeth of the gear of the release device are adapted to be operatively engaged with the toothing of the nut. Preferably, the number of teeth of the teeth of the gear of the release device is smaller than the number of teeth of the teeth of the nut selected. In this case, the gear of the release device can be regarded as a pinion. A transmitted from the outside to the gear or release device torque is through the gear

Enlarged engagement with the teeth of the nut according to the ratio of the teeth of the toothing on the nut, so that the release of the nut from a tightened state is facilitated. The term outer tube is to be understood in a broad sense. For example, it may be a round or polygonal tube. Preferably, the outer tube is flat on its inner surface. There is also the possibility that, for example, grooves extend on the outside of the outer tube parallel to the tube longitudinal direction. In particular, it may be T-profile-like undercut grooves in cross-section. This not only facilitates the attachment of possibly desired stiffening elements, such as frames, but also the releasable attachment of a release device. Suitably, an inner diameter of the outer tube is greater than or equal to or equal to an outer diameter of the spindle selected. This allows the spindle to be telescoped in the outer tube for length adjustment of the spindle support. The spindle may preferably be formed hollow inside, for example. As a pipe with external thread. 2] There are numerous other possibilities for the preferred embodiment. It is considered appropriate that the bearing surface is formed on an end face of the outer tube or on an end plate, which is arranged at a longitudinal end of the outer tube and supported in particular on an end face of the outer tube, that the bearing surface has an opening through which the Spindle passes through and that the support surface and the support surface of the nut are geometrically adapted to overlap with respect to a direction of a spindle longitudinal axis perpendicular projection viewing plane. In the overlap region, the axial support can be done. The external thread is preferably self-locking. As to overcome the Losdrehwiderstandes the mother already a small rotational movement of, for example, 1/4 or 1/2 turn (or even less) may be sufficient, if necessary, a high reduction can be selected by means of the release device, without delaying the loosening. There is the possibility that the outer tube and the gear bearing device have fastening means by means of which the gear bearing device, in particular releasably attached or attachable to the outer tube, so that the teeth of the nut and the toothing of the gear of the release device interlock. If the teeth of the nut and the toothing of the release device are designed as bevel teeth, it is preferred that the gear axis of rotation of the release device and the longitudinal center axis of the nut extend in mutually perpendicular directions. Alternatively, the directions mentioned could also extend at a different angle to each other or (depending on the design of the toothings) parallel to each other. In a preferred embodiment it is provided that the quick-clamping device has a dowel pin which is rotatably supported in the gear bearing device and at one longitudinal end of a locking element is provided, wherein the locking element is insertable into a T-profile undercut groove of the outer tube and in the groove inserted state by means of rotation of the clamping pin depending on the rotational position causes the axial clamping or releasing the gear bearing device on the outside of the outer tube. Preferably, a support plate may be fastened to a longitudinal end of the spindle arranged outside the outer tube. The support plate can serve for a correspondingly large-area support of an article, for example a formwork support.

According to a further, independent aspect of the invention, this also relates to a method for supporting an article, preferably a formwork support for slab formwork.

Conventionally, the known spindle supports described above are used for such a method. Against this background and The above-described and thereby existing limitations, the invention is so far the object of developing such a method advantageous.

As a solution, the invention proposes that the method comprises at least the following method steps:

Providing a spindle support having one or more of the features described above,

Providing an article, in particular a formwork support, to be supported by means of the spindle support, in particular above a substrate,

axial support of the spindle support at a first longitudinal end of the spindle support, in particular on a substrate,

Contacting the article with a second longitudinal end of the spindle support,

Rotating the nut relative to the outer tube about the spindle support longitudinal axis in a first rotational direction, so that the axial support force increases,

thereafter transmitting a torque to a terminal of the release device for rotating the nut relative to the outer tube in a second direction of rotation opposite to the first direction of rotation.

For possible effects and advantages as well as existing possibilities for the preferred embodiment, reference is made to the preceding and following description.

Preferably, the outer tube and / or the spindle and / or the nut and / or the release device or individual components thereof may be made of aluminum or aluminum alloy in order to achieve the lowest possible weight. Brief description of the drawings

The aspects covered by the invention will be described below with reference to the accompanying figures, which show preferred embodiments. In detail shows: perspective and shortens a spindle support according to the invention according to a preferred embodiment, which comprises a nut according to the invention and a release device according to the invention, each according to a preferred embodiment; the arrangement shown in Figure 1 in a different viewing direction, the arrangement shown in Figures 1 and 2 in a partially exploded view,

Fig. 4 in perspective, the nut of the shown in Figures 1 to 3

Spindle support

Fig. 5, the mother shown in Figure 4 in a sectional view along

Sectional plane V-V according to FIG. 4,

5a shows a modification to FIG. 5,

6 shows in perspective the release device shown in FIGS. 1 to 3 on a wall section of an outer tube of the spindle support shown in FIGS. 1 to 3, 7 shows the release device shown in FIG. 4 in the viewing direction VII indicated there, partly in section,

8 shows the release device shown in Figure 6, but after mounting on the wall portion of the outer tube. Fig. 9, the release device shown in Figure 6 in there indicated

Viewing IX, partially cut,

10 is a partially sectioned and shortened side view of the spindle support shown in the preceding figures, but supported on a substrate and with a supported on her (partially shown) formwork beams,

11 is a perspective view of an upper portion of the spindle support shown in the preceding figures with a torque wrench attached to the release device;

Fig. 12 in perspective and shortens a spindle support according to the invention according to a second preferred embodiment and

Fig. 13 in perspective and shortens a spindle support according to the invention according to a third preferred embodiment.

Description of the embodiments

FIGS. 1 to 3 show a spindle support 1 according to the invention in accordance with a preferred exemplary embodiment, wherein for the sake of simplification, as indicated by dashed lines, a shortened representation is selected has been. The spindle support 1 comprises a spindle 2, a nut 3 and an outer tube 4. The nut 3 has an internal thread 5, with which it is screwed in the state of use shown on a mating external thread 6 of the spindle 2. An adjoining longitudinal portion 7 of the spindle 2 (see Figure 3) extends in the use state shown in the exemplary case in the hollow interior of the outer tube 4. Another length section 8 extends on the other side of the nut 3 and carries at its free longitudinal end a plate , which can serve, for example, for the vertical support of a formwork support on the underside thereof. It is understood that the respective lengths of the longitudinal sections 7, 8 by means of rotation of the

Nut 3 can be changed relative to the spindle 2. In the example, the spindle support 1 comprises an end plate 10, which is arranged on the nut 3 facing the longitudinal end of the outer tube 4 and axially supported on the end face thereof. The face plate 10 forms on its surface facing the nut 3 a bearing surface 11. Through an opening 12 of the

End plate 10 and thus the support surface 11, the spindle 2 extends therethrough. The diameter of the opening is slightly larger than the outer diameter of the external thread 6. The nut 3 has on its outer tube 4 facing end face 13, a support surface 14 through which the spindle 2 also extends therethrough. The support surface 11 and the

Support surface 14 are arranged concentrically to the spindle 2, so that a longitudinal center axis M of the nut 3 and a spindle longitudinal axis L of the spindle support 1 lie on a common straight line. The support surface 11 and the support surface 14 are geometrically adapted to be in the pushed onto the spindle state with respect to one of the

Spindle longitudinal axis L overlap vertical projection viewing plane. As shown in FIGS. 1, 2, in the state of use, the nut 3 is supported vertically with its lower-side support surface 14 on the upper-side support surface 11 of the end plate 10. During this support off the nut 3 is rotated about the spindle longitudinal axis L and the Spindle 2 is prevented from rotating accordingly (eg by acting on the plate 9), the spindle 2 is displaced either downwards or upwards, depending on the direction of rotation of the nut 3, whereby the overall length of the spindle support 1 is correspondingly reduced or reduced is extended. In the example, the spindle support 1 has a base plate 15.

This is fastened to the longitudinal end of the outer tube 4 opposite the end plate 10 and can serve for supporting the spindle support, for example, on a surface not shown in FIG. As also shown in FIGS. 4, 5, the nut 3 comprises a nut housing 16, through which a passage opening 17 extends along its longitudinal central axis M. In the example, the internal thread 5 adjoining the passage opening 17 extends along the entire height (meaning the extension parallel to the longitudinal center axis M) of the nut 3. Relative to an extension direction of the nut 3 that is parallel to the longitudinal central axis M, the nut housing 16 comprises an approximately central, sleeve-like longitudinal portion 18 around which a toothing 19 of the nut 3 extends. In the example, it is a bevel toothing. Also in the example, the toothing 19 extends along a circumferential direction U that runs around the longitudinal central axis M along the entire circumference. The toothing 18 is formed on an annular body 20 which is fixed to the nut housing 16 in a manner not shown (eg. By screwing or the like), so that no rotation of the ring body 20 relative to the nut housing 16 about the longitudinal central axis 3 possible is. FIG. 5 a shows a modification to FIG. 5, wherein the toothing 19 is formed in one piece on the nut housing 16. The

Nut housing 16 has a handling cutout 21, which in the axial direction (ie in a direction parallel to the longitudinal center axis M direction) integrally connected to the sleeve-like longitudinal portion 18. This has an annular portion 22 which radially (ie in a to the longitudinal center axis M perpendicular radial direction) extends outwardly beyond the sleeve-like longitudinal portion 18 addition. In the example of FIG. 5, the annular body 20 on which the toothing 19 is formed is supported on the annular portion 22 in the axial direction (that is, in a direction parallel to the longitudinal center axis M). The handling portion 21 has at the periphery of the annular portion 22 four equally spaced radial projections 23. These are integrally formed with the annular portion 22 and extend radially outward. The radial projections 23 facilitate handling, in particular gripping, of the nut 3 in order to rotate it in a desired direction of rotation.

The nut housing 16 has a support ring 24. This integrally connects to the sleeve-like longitudinal section 18 at its longitudinal end opposite to the handling section 21. The support ring 24 extends along the entire circumference radially outwardly beyond the sleeve-like longitudinal portion 18 and forms the support surface 14 of the nut 3 from. In the example, the ring body 20 on which the toothing 19 is formed may be fixed to the sleeve-like length portion 18 and / or to an end face of the annular portion 22 (for example, screwed, glued, or the like).

As particularly illustrated in Figures 6 to 9, a release device according to the invention 25, which can be used in particular for a spindle support 1 according to the invention, a toothing 26 having a gear 27 and a gear bearing means 28, by means of which the gear 27 about a geometric gear axis of rotation Z is rotatably mounted. In the example, the toothing 26 is formed as a bevel toothing and with the teeth 19 of the nut 3 adapted to it in one in the Figures 1, 2 shown state of use cooperate as a bevel gear. An axis 29, on which the gearwheel 27 is fixed in a torsionally rigid manner, has at its opposite longitudinal end a connection 30 which is designed to be non-circular (hexagonal in the example) in order to transmit torques in a cross-sectional plane perpendicular to the gear axis of rotation Z. Furthermore, the release device 25 comprises a quick-release device 31. This has a clamping pin 32 which is rotatably held in the gear bearing device 28 as the axis 29. At the longitudinal end 33 of the clamping pin 32, which is located with the gear 26 on the same side of the gear wheel bearing device 28, a locking element 34 is arranged, which is rotatable by means of the clamping pin 32. As FIG. 7 shows, the locking element 34 shown there in section is outwardly rounded in the plane of rotation. In the rotational position shown in FIG. 7, it is possible to insert into a groove T-profile-like undercut on the outer side of the outer tube 4 parallel to its longitudinal direction. The tension pin

32 can be rotated by means of a handle 36 attached thereto. If, starting from FIGS. 6 and 7, a rotation takes place into the rotational position shown in FIGS. 8 and 9, the locking element is also twisted in the groove 35 so that, as illustrated in FIG. 9, it engages behind the lateral groove in a form-fitting manner. In addition, the locking element 34 may have a curved surface to the plane of Figures 7 and 9, so that at the same time results in a clamping within the groove 35. In the manner described by way of example, the release device 25 can be detachably fastened to the outside of the outer tube 4. From the foregoing, it follows that, according to the orientation of the groove 35, the fixing location can be determined such that the toothing 26 of the toothed wheel 27 meshes with the toothing 19 of the nut 3, ie engages with one another in terms of gearbox. 3] Figure 10 shows a state of use of the spindle support 1 shown in the preceding figures, in which they with their base plate 15 on a Substrate 37 is supported vertically. On the upper side of the plate 9 is an object to be supported 38, which in the example is a formwork support 39, placed. In the example, the internal thread 5 and the external thread 6 are a right-hand thread. If the nut 3 is rotated relative to the spindle 2 about the spindle longitudinal center axis L in a direction that runs clockwise from the top in the direction of view, the spindle 2 moves upward relative to the outer tube 4, so that the total length of the spindle support 1 is increased. As a result, the upper longitudinal end of the spindle support 1, in the example the plate 9, initially approximated from below to an object to be supported 38 and then pressed against the article 38, whereby the mother 3 from top to bottom increasingly against the outer tube 4 and . is pressed against the supported on him end plate 10. With the pressure acting perpendicularly between the support surface 11 and the support surface 14, vertical friction forces acting in the contact plane also increase. This can lead to an even greater release torque being required, in particular after prolonged use of the spindle support 1 in the loaded condition, for a later reverse rotation of the nut 3. This release torque between the support surface 11 and the support surface 14 can be relatively easily applied by means of the release device 25 by a torque is transmitted to the terminal 30. On the one hand, this is facilitated by the fact that in the example the toothing 26 has a larger number of teeth along the respective circumference than the toothing 19. A rotational movement of the connection 30 is thereby translated "slowly" to the relationship of the

Turning speeds reciprocally, a torque transmitted to the terminal 30 in the transmission to the nut 3 by means of the serrations 19, 26 amplified. This means that on the handle 36 only a smaller torque must be transmitted to release, as this would have to be applied to the radial projections 23 on the nut 3. in addition comes the possibility shown in Figure 11, to connect to the terminal 30 for additional torque gain a torque wrench 40, in particular with ratchet function. In addition, it is understood that the release device 25 can not only serve to unscrew the nut 3, but also to move them in the opposite direction. As is also illustrated, for example, in FIG. 10, the gear axis of rotation Z of the release device 25 and the longitudinal center axis M of the nut 3 extend in mutually perpendicular directions, resulting in an angle gear. The spindle support 1 comprises in the example a plurality of quick fasteners 41, which are screwed to the outside of the outer tube 4. Each quick release has a securing hook 42, which in a closed state of the quick release 41, the support ring 24 of the mother

3 engages laterally and from above, so that the nut 3 with the spindle 2 screwed therein is not unintentionally (for example, during transport) from the

Outer tube 4 can fall out. Depending on the configuration, there is the possibility that in the closed state of the quick-release fasteners of the support ring 24 of the nut 3 is pressed by means of the locking hooks 42 against the end plate 10 or that a small gap between the safety hook 42 and the end plate 10 remains. If the quick release 41 is opened, the

Nut 3 (possibly with the spindle 2 screwed therein) from the outer tube

4 or are removed from the face plate 10 in parallel to the spindle longitudinal axis L direction.

FIG. 12 shows a spindle support 1 according to the invention in accordance with a

second preferred embodiment. In this case, a first spindle 2 and in the opposite second longitudinal end of the outer tube 4, a second spindle 2 is inserted into the first longitudinal end of the outer tube 4. On every Spindle 2 is a nut 3, which corresponds to the nut described above, screwed. Likewise located at each of the two longitudinal ends of the outer tube 4 is a release device 25, to which reference is likewise made to the preceding description. As a result, the spindle support 1 shown in FIG. 12 can be length-adjusted at both longitudinal ends.

Figure 13 shows a perspective view in a section of a spindle support 1 according to the invention according to a third preferred embodiment. This differs from the preceding embodiments in that the above-described end plate 10 has been replaced by a deviating in the design, larger area face plate 10. In addition, a stiffening frame designated overall by 44 was laterally connected to a groove 35 by means of screw connections 43. At the opposite, not shown in Figure 13 lateral edge can, for example, another spindle support 1 are screwed. It is possible to laterally connect a larger number of spindle supports 1 by means of, for example, such stiffening frames 44 in order to create rigid frameworks.

The above statements serve to explain the total of the application covered inventions that further develop the state of the art, at least by the following feature combinations in each case independently, namely:

A nut, which is characterized in that the nut 3, in particular on the outside, a toothing 19 along a leading Umf the longitudinal center axis M Umf direction U has. A nut, which is characterized in that the nut housing 16 has a sleeve-like longitudinal section 18, along the peripheral surface of which the toothing 19 extends, the toothing 19 being formed or fastened in particular to the sleeve-like longitudinal section 18.

A nut, which is characterized in that the nut 3 comprises an annular body 20 or a ring portion on which the toothing 19 is formed and which is fixed to the nut housing 16.

A nut, which is characterized in that the toothing 19 of the nut 3 is formed as Stirnzahnung, as a peripheral toothing, as a bevel toothing or as Kronenzahnung.

A nut, which is characterized in that the nut 3, in particular the nut housing 16, comprises a handling portion 21 which connects in the axial direction, in particular in one piece, to the sleeve-like longitudinal portion 18 and which has an annular portion 22, wherein the annular portion 22 in particular projects radially outwardly beyond the sleeve-like longitudinal portion 18.

A nut which is characterized in that the toothing 19 at or adjacent to an end face of the annular portion 22 which projects radially outwardly beyond the sleeve-like longitudinal portion 18 and which are parallel or inclined to a perpendicular to the longitudinal central axis M. Level extends, is arranged. A nut, which is characterized in that the annular body 20, on which the toothing 19 is formed, in the axial direction adjacent to the annular portion 22 and in particular is attached thereto.

A nut, which is characterized in that the handling portion 21 at the periphery of the annular portion 22 has a radial projection 23 which extends from the annular portion 22, in particular integrally, starting radially outward, or that the handling portion 21 at a plurality of radial projections 23 spaced from each other in the circumference of the annular portion 22 extending radially outwards from the annular portion 22, in particular in one piece.

A nut, which is characterized in that the nut 3, in particular the nut housing 16, on a front side 13 has a support surface 14, wherein it is provided in particular that the nut 3, in particular the nut housing 16, has a support ring 24, which in the axial direction, in particular in one piece, adjoins the sleeve-like longitudinal section 18 at its longitudinal end opposite to the handling section 21, which, in particular along the entire circumference, protrudes radially outward beyond the sleeve-like longitudinal section 18 and on which the support surface 14 of the nut 3 is trained.

A release device, which is characterized in that the

Löseeinrichtung 25 a toothing 26 having gear 27 and a gear bearing device 28, by means of which the gear 27 of the release device 25 is rotatably mounted about a gear axis Z, comprises. A release device, which is characterized in that the toothing 26 of the gear 27 is formed as Stirnzahnung, as peripheral teeth, as worm toothing, as bevel toothing or as Kammzahnung. A release device, which is characterized in that the gear 26 or connected to the gear 26 axis 29 has a terminal 30 for transmitting torque to the one, in particular in its release direction and reverse direction reversible, torque wrench 40, a ratchet or the like is connected or connectable.

A release device, which is characterized in that the release device 25 comprises a quick-release device 31, which has a tensioning pin 32 which is held in the gearwheel bearing device 28, in particular rotatable, and at whose one longitudinal end 33 a locking element 34 is arranged ,

A spindle support, which is characterized in that it is in its nut 3 to a nut 3 according to one or more of claims 1-9, wherein the spindle 2 of the spindle support 3 to the internal thread 5 of the nut 3 matching external thread 6, and that the spindle support 1 a release device 25 according to one or more of

Claims 10-13, wherein the toothing 26 of the gear 27 of the release device 25 is suitably designed for cooperation with the teeth 19 of the nut 3 and wherein the number of teeth of the teeth 26 of the gear 27 of the release device 25 in particular smaller than the number of Teeth of the teeth 19 of the nut 3 is. A spindle support, which is characterized in that the bearing surface 11 is formed on an end face of the outer tube 4 or on an end plate 10 which is arranged at a longitudinal end of the outer tube 4 and in particular supported on an end face of the outer tube 4, that the support surface 11 has an opening 12 through which the spindle 2 passes and that the support surface 11 and the support surface 14 of the nut 3 are geometrically adapted to overlap with respect to a projection viewing plane perpendicular to a spindle longitudinal center axis L. A spindle support, which is characterized in that the outer tube 4 and the gear bearing device 28 have fastening means by means of which the gear bearing device 28, in particular releasably secured to the outer tube 4 or fastened, so that the teeth 19 of the nut 3 and the Teeth 26 of the gear 27 of the release device 25 engage each other.

A spindle support, which is characterized in that the gear axis of rotation Z of the release device 25 and the longitudinal center axis M of the nut 3 extend in mutually perpendicular directions.

A spindle support, which is characterized in that the quick-action clamping device 31 has a clamping pin 32 which is rotatably held in the gear bearing device 28 and at whose one longitudinal end 33 a locking element 34 is provided, wherein the locking element 34 in a T profile-like undercut groove 35 of the outer tube 4 is inserted and inserted into the groove 35 state by means of rotation of the clamping pin 32 depending on the rotational position of the axial clamping or Releasing the gear bearing device 28 on the outside of the outer tube 4 causes.

A method characterized by:

Provision of a spindle support 1 according to one or more of claims 14-18,

Providing an object 38, in particular a formwork support 39, to be supported by means of the spindle support 1, in particular over a substrate

axial support of the spindle support 1 at a first longitudinal end of the spindle support 1, in particular on a substrate 37,

Contacting the article 38 with a second longitudinal end of the spindle support 1,

Turning the nut 3 relative to the outer tube 4 about the spindle support longitudinal axis L in a first rotational direction, so that the axial support force increases,

thereafter transmitting a torque to a terminal 30 of the release device 25 for rotating the nut 3 relative to the outer tube 4 in a direction opposite to the first direction of rotation second rotational direction.

All disclosed features are essential to the invention (individually, but also in combination with one another). The disclosure content of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application. The subclaims characterize with their features independent inventive developments of the Prior art, in particular to make divisional applications based on these claims.

List of reference numbers

1 spindle support 27 gear

2 spindle 28 gear bearing device

3 nut 29 axis

4 outer tube 30 connection

5 female thread 31 quick release device

6 external thread 32 dowel pin

7 longitudinal section 33 longitudinal end

8 length section 34 locking element

9 plate 35 groove

10 face plate 36 handle

11 contact surface 37 underground

12 opening 38 item

13 end face 39 formwork support

14 support surface 40 torque wrench

15 base plate 41 quick release

16 nut housing 42 safety hook

17 through opening 43 screw connection

18 sleeve-like length section 44 stiffening frame

19 toothing

20 ring body

21 Handling section L Spindle longitudinal axis

22 annular section M longitudinal center axis

23 Radial projection U circumferential direction

24 Support ring Z Gear rotation axis

25 release device

26 toothing

Claims

claims

1. nut (3), in particular for a spindle support (1), comprising a nut housing (16) through which a through-center opening (17) extends along a longitudinal central axis (M) and in which a through-opening (17) adjoining internal thread (17) 5), characterized in that the nut (3), in particular on the outside, has a toothing (19) along a circumferential direction (U) leading around the longitudinal center axis (M).

2. nut (3) according to claim 1, characterized in that the nut housing (16) has a sleeve-like longitudinal portion (18), along the peripheral surface of which the toothing (19) extends, wherein the toothing (19) in particular on the sleeve-like longitudinal portion ( 18) is formed or fixed.

3. nut (3) according to one or more of the preceding claims, characterized in that the nut (3) comprises an annular body (20) or a ring portion on which the toothing (19) is formed and on the nut housing (16) is attached.

4. nut (3) according to one or more of the preceding claims, characterized in that the toothing (19) of the nut (3) as a front toothing, as a circumferential toothing, as bevel toothing or as a crown toothing is formed.

5. nut (3) according to one or more of the preceding claims, characterized in that the nut (3), in particular the nut housing (16), a handling portion (21), in the axial direction, in particular in one piece, to the sleeve-like longitudinal section (18) connects and which has an annular portion (22), wherein the annular portion (22) in particular projects radially outwardly beyond the sleeve-like longitudinal portion (18).

6. nut (3) according to one or more of the preceding claims, characterized in that the toothing (19) on or adjacent to an end face of the annular portion (22) which projects radially outwardly beyond the sleeve-like longitudinal portion (18) and which is parallel or inclined to a plane perpendicular to the longitudinal central axis (M) extending plane is arranged.

7. nut (3) according to one or more of the preceding claims, characterized in that the annular body (20) on which the toothing

(19) is formed, in the axial direction of the annular portion (22) adjacent and in particular attached thereto.

8. Nut according to one or more of the preceding claims, characterized in that the handling portion (21) at the periphery of the annular portion (22) has a radial projection (23) extending from the annular portion (22), in particular in one piece, starting extends radially outward, or that the handling portion (21) at the periphery of the annular portion (22) spaced from each other a plurality of radial projections (23) extending from the annular portion (22), in particular in one piece, starting radially outward.

9. nut (3) according to one or more of the preceding claims, characterized in that the nut (3), in particular the nut housing (16), on a front side (13) has a support surface (14), wherein is provided in particular that the nut (3), in particular the nut housing (16), a support ring (24), in the axial direction, in particular in one piece, to the sleeve-like longitudinal portion (18) at its to the handling section (21) opposite Longitudinal end adjoins, in particular along the entire circumference, radially outwardly beyond the sleeve-like longitudinal portion (18) and on which the support surface (14) of the nut (3) is formed.

10. release device (25), in particular for a spindle support (1), characterized in that the release device (25) has a toothing (26) exhibiting gear (27) and a gear bearing device (28) by means of which the gear (27) of Release device (25) is rotatably mounted about a gear axis of rotation (Z) comprises.

11. release device (25) according to the preceding claim, characterized in that the toothing (26) of the toothed wheel (27) is formed as Stirnzahnung, as peripheral teeth, as worm toothing, as bevel toothing or as a comb toothing.

12. release device (25) according to one or more of claims 10 to

11, characterized in that the toothed wheel (26) or an axis (29) connected to the toothed wheel (26) has a connection (30) for transmitting a torque to which a torque wrench (40) can be switched, in particular in its release direction and reverse direction ), a ratchet or the like is connected or connectable.

13. release device (25) according to one or more of claims 10 to

12, characterized in that the release device (25) has a

Quick-clamping device (31) comprising a clamping pin (32), in the gear bearing device (28), in particular rotatable, is held and at one longitudinal end (33), a locking element (34) is arranged.

14. Spindle support (1), at least comprising a spindle (2), an outer tube (4) and a nut (3), wherein the spindle (2) at least lengthwise in the outer tube (4) inserted or inserted, wherein the Nut (3) is screwed or screwed onto the spindle (2), wherein the outer tube (40) or at one longitudinal end of the outer tube (4) arranged end plate (10) has a support surface (11) and the nut (3) for support characterized in that its nut (3) is a nut (3) according to one or more of the preceding claims 1-9, wherein the spindle (2) of the Spindle support (3) to the internal thread (5) of the nut (3) matching external thread (6), and that the spindle support (1) comprises a release device (25) according to one or more of claims 10-13, wherein the toothing ( 26) of the gear (27) of the release device (25) for a Cooperation with the toothing (19) of the nut (3) is suitably formed and wherein the number of teeth of the toothing (26) of the gear (27) of the release device (25) in particular smaller than the number of teeth of the toothing (19) of the nut (3) is.

15. spindle support (1) according to the preceding claim, characterized in that the bearing surface (11) on an end face of the outer tube (4) or on a front plate (10) arranged at a longitudinal end of the outer tube (4) and in particular at one Is formed, that the bearing surface (11) has an opening (12) through which passes through the spindle (2) and that the Aufaufseite Positioning surface (11) and the support surface (14) of the nut (3) are geometrically adapted to overlap with respect to a plane perpendicular to a spindle longitudinal axis (L) projection viewing plane.

16. spindle support (1) according to one or more of claims 14 to 15, characterized in that the outer tube (4) and the gear bearing device (28) have fastening means by which the gear bearing device (28), in particular releasably, on the outer tube (4 ) is fastened or fastened, so that the toothing (19) of the nut (3) and the toothing (26) of the toothed wheel (27) of the release device (25) engage with each other.

17. Spindle support (1) according to one or more of claims 14 to 16, characterized in that the gear axis of rotation (Z) of the release device (25) and the longitudinal central axis (M) of the nut (3) extend in mutually perpendicular directions. 18 spindle support (1) according to one or more of claims 14 to 17, characterized in that the quick-clamping device (31) has a clamping pin (32) which is rotatably supported in the gear bearing device (28) and at one longitudinal end (33). a locking element (34) is provided, wherein the locking element (34) in a T-profile-like undercut groove (35) of the outer tube (4) is inserted and inserted into the groove (35) state by means of rotation of the clamping pin (32) causes the rotational position of the axial clamping or releasing the gear bearing device (28) on the outside of the outer tube (4). Method for supporting an article (38), in particular a formwork support (39) for a slab formwork, comprising the method steps:

Providing a spindle support (1) according to one or more of claims 14-18,

Providing an article (38), in particular a formwork support (39) to be supported by means of the spindle support (1), in particular above a substrate,

axial support of the spindle support (1) at a first longitudinal end of the spindle support (1), in particular on a substrate (37),

Contacting the object (38) with a second longitudinal end of the spindle support (1),

Rotating the nut (3) relative to the outer tube (4) about the spindle support longitudinal axis (L) in a first rotational direction to increase the axial support force, then transmitting torque to a port (30) of the release device (25) to rotate the Nut (3) relative to the outer tube (4) in a direction opposite to the first rotational direction of the second rotational direction.

20. nut, release device, spindle support or method, characterized by one or more of the characterizing features of one of the preceding claims.