EP2836101A1

EP2836101A1 - Tree stand

Info

Publication number: EP2836101A1
Application number: EP13709765.5A
Authority: EP
Inventors: Rainer Schulz
Original assignee: F-H-S International & Co KG GmbH
Current assignee: F-H-S International & Co KG GmbH
Priority date: 2012-04-13
Filing date: 2013-03-07
Publication date: 2015-02-18
Anticipated expiration: 2033-03-07
Also published as: DE102012007454A1; WO2013152822A1; EP2836101B1; PL2836101T3

Abstract

The invention relates to an improved stand for supporting mast-shaped or rod-shaped parts, in particular Christmas trees, comprising a receiving device (10) to which at least two holding elements (30) are fastened and are arranged offset about a central axis (16) of a receiving space (14) of the receiving device (10) and which are each pivotable about a horizontal pivot axis (32) away from the central axis (16) in the direction of a release position and towards the central axis (16) in the direction of a fixing position. The receiving device (10) is mounted such that the distance thereof from a base plate (2) of the stand is variable, and is connected to at least one coupling device (20) that is coupled in respect of movement to a clamping device (40, 42). The clamping device (40, 42) is connected to a tensioning device (81, 82), which is coupled to a holding element (30) or to a plurality of holding elements (30). By reducing the distance between the receiving device (10) and the base plate (2) the receiving device (10) drives the clamping device (40, 42) by means of the coupling device (20) in such a manner that the tensioning device (81, 82) is pulled by the clamping device (40, 42) in a tensioning direction (Z) and/or is subjected to a force such that the clamping device (40, 42) counteracts or prevents pivoting of the holding element (30) or the holding elements (30) away from the central axis (16) towards a release position.

Description

tree stand

The present invention relates to a stand for mounting mast or rod-shaped parts.

A Christmas tree stand is known for example from DE 39 32 473 C2. It comprises a Aufnähmegefäß, at which offset in the circumferential direction lying several each pivotable about a horizontal axis levers are arranged. The levers are connected to each other via a revolving tensioning cable, which leads to a tensioning device. By operating the tensioning device, the levers are moved about their respective horizontal axis to an inserted in the middle trunk of a tree, the levers are arranged and aligned so that the levers are each moved more or less on the vertical axis of symmetry of a tribe to be adjusted.

The disadvantage of this so-called functional tree stand, however, is that the assembly work of the entire Christmas tree stand including the mounting of the holding device with the associated pivot axes, clamping device etc. labor-and thus time-consuming and expensive. Furthermore, the assurance of the holding Christmas tree is very expensive, because the Christmas tree must be set as vertically as possible in the space provided, and then during the holding of the Christmas tree, the clamping device must be repeatedly and thus pumped operated, so that Place the retaining elements on the trunk of the Christmas tree. Therefore, an improved Christmas tree stand has already been proposed according to WO 2010/086166 AI, which is provided with a self-centering device. In other words, in contrast to other previously known Christmas tree stands, no separate tensioning device, for example a foot lever tensioning device, must be actuated for fixing the tree.

The Christmas tree stand known from WO 2010/086166 AI comprises pivotable holding elements arranged offset around the receiving space for a tree trunk, which are held biased in their at least approximately central central position. The holding elements themselves are curved in a side view parallel to their Verschwenkach.se towards the center or convex, whereby the upper ends of the holding levers run away from each other, to form a funnel-shaped receptacle. This opens up the possibility of setting up a tree trunk from above onto these holding levers, which are then pivoted more or less radially outwards by the weight of the tree trunk against the force of their spring device, namely until the tree trunk touches the tree trunk in corresponding opening position holding levers down to the tree stand can be discontinued. The tree can then be placed on a mandrel located at the bottom of the bottom plate, wherein the spring-loaded holding elements or holding lever hold the tree in its corresponding Ausjustierten Zentralla- ge and fix.

Finally, a fixing and locking device in the form of a fixing and / or locking ring is provided in this prior publication, which can be rotated between an open position and a locking position. In the locking position causes the pivot lever to fix the tree can not be pivoted in the open position to keep the tree in this position safely.

DE 299 09 386 U1 discloses a Christmas tree stand which comprises a receptacle and a sliding vessel arranged in the receptacle, which is mounted with a variable spacing as well as rotatable with respect to the receptacle. An attached to a lateral surface of the sliding guide mandrel protrudes through a introduced in the outer jacket of the receptacle and obliquely extending guide. At the upper edge of the sliding vessel a plurality of holding elements are rotatably supported by means of vertically arranged bolts on bearing blocks, so that the respective holding element are each pivotable about vertical axes. The holding elements further comprise guide elements which each have fixed points through which a flexible tensioning cable is passed. By lowering the sliding vessel inside the receptacle, the sliding vessel is set into a rotary motion, through which the tensioning cable is tensioned. Due to the tension of the tensioning cable, the respective holding elements are moved due to the force loading. movement of the guide elements of the holding elements pivoted about the bearing pin.

DE 299 05 455 Ul discloses a Christmas tree stand which is designed as a double vessel. The Christmas tree stand comprises a receptacle in which a receiving device is arranged variable in distance. Retaining elements are mounted pivotably via bearing bolts at the upper edge of the receiving device. Lower legs of the retaining elements are connected via spring devices to the upper edge of the receiving container. By lowering the receiving device within the receptacle, the holding elements are pivoted about the bearing pin. This kind of Christmas tree stand is far superior to earlier Christmas tree stands from their technical solution. It provides a simple and secure fixation for trees, especially Christmas trees. Object of the present invention is to provide a further improved stand for clamping mast or rod-shaped parts, especially of Christmas trees, in which for fixing mast or rod-shaped parts in the stand no additional fixing, locking or securing devices must be pressed.

The object is achieved according to the features specified in claim 1. Advantageous embodiments of the invention are specified in the subclaims.

In the stand according to the invention at least two shark teelemente connected to a receiving device, wherein the receiving device is designed for receiving the mast or rod-shaped part. The at least two holding elements are each arranged offset around a central axis of a receiving space of the receiving device and pivotable about a horizontal pivot axis or about a pivot axis with a horizontal component away from the central axis in the direction of a release position or open position and toward the central axis in the direction a fixing position pivoted. In this case, the receiving device is mounted variable in distance to a bottom plate of the stand. In the simplest case, it is at the receiving device to a support floor, or to a support ring on which the Christmas tree is set up. The receiving device is connected to at least one coupling device which is coupled for movement with a tensioning device. The tensioning device in turn is connected to a pulling device or to a plurality of pulling devices, wherein the pulling device or the plurality of pulling devices is / are coupled in each case to a holding element or to a plurality of holding elements. By reducing the distance between the receiving device and the bottom plate, the receiving device drives the clamping device by means of the coupling device connected to it in such a way that the pulling device or the pulling devices are pulled and / or subjected to force by the clamping device in a pulling direction, so that the Clamping device by means of the pulling device or by means of the pulling devices counteracts or prevents pivoting of the holding element or the holding elements away from the central axis in the direction of the release position. The driving of the clamping device is thus effected by means of the weight of the mast or rod-shaped part, which acts on the receiving device. Thus eliminates a known from the prior art pump-like actuation of a clamping device, which must be operated differently depending on the diameter of the mast or rod-shaped part. Furthermore, no additional fixing, locking or securing device must be actuated for fixing the set in the stator according to the invention mast or rod-shaped part, since the holding elements are automatically clamped by adjusting the mast or rod-shaped part to this with a force that Weight of the set mast or rod-shaped part corresponds. In addition, after adjustment of the pylon-shaped or rod-shaped part, this can be pressed down into the stand and thus onto the receiving device, so that the holding elements with a force greater than the weight of the mast or rod-shaped part on the mast or rod-shaped part to be tightened.

The traction device is preferably a flexible safety rope or a flexible tensioning cable. In a correspondingly constructed stand, a mast or rod-shaped part held by the latter is automatically centered, so that the stand can also be referred to as a self-centering device.

Preferably, the stator according to the invention further comprises at least one guide device connected to the base plate, by means of which the receiving device is guided variable distance to the bottom plate. This guide device can be realized for example by sliding webs or guide webs, between which radial projections of the receiving device are arranged and guided, so that the receiving device is guided distance-variable to the bottom plate. A suitably designed stand with a guide device has an increased stability, and moreover, the receiving device always performs a defined lifting movement relative to the bottom plate of the stand.

Preferably, the stand further comprises a lifting device, which is connected to the bottom plate or a housing cover and is arranged between the receiving device and the bottom plate or the housing cover. The lifting device exerts on the receiving device a force which causes an increase in the distance between the bottom plate and the receiving device.

The lifting device can be designed, for example, as a force and / or spring device. If the lifting device is arranged between the bottom plate and the receiving device, then the lifting device can be realized in the form of a compression spring which pushes the receiving device away from the bottom plate. If, on the other hand, the lifting device is arranged between the housing cover and the receiving device, then the lifting device can be designed as a tension spring, which pulls the receiving device towards the housing cover and thus away from the floor plate. An inventive stand equipped with the lifting device has the advantage that the unloaded receiving device always has a maximum distance from the bottom plate, so that the holding elements in the release position or in the Open position. Thus, in a non-loaded stand, in which no Christmas tree is set, at any time simply a Christmas tree or more generally a mast or rod-shaped part can be adjusted.

Preferably, the stand comprises a locking device, between a blocking position and a release position can be transferred. In the locked position, the locking device interacts with the clamping device and / or the coupling device and / or the receiving device such that the distance between the receiving device and the bottom plate can not be increased. In the release position of the locking device, however, this does not interact with the clamping device and / or the coupling device and / or the receiving device, so that the distance between the receiving device and the bottom plate can be increased.

The locking device may for example be realized in the form of a pawl, which engages, for example, in a gear which is part of the clamping device. A stand provided with the locking device has the advantage that when the locking device is in the blocking position, the distance between the receiving device and the bottom plate can not be increased, so that a clamping force exerted on the retaining elements by means of the pulling device can not be reduced , Consequently, for example, a Christmas tree can be set in the stand equipped with the locking device, and the Christmas tree can be pressed into the stand or into the receiving device with an additional force, so that the holding elements are clamped onto the trunk with an increased force , To Letting go of the Christmas tree prevents the locking device from increasing the distance between the receiving device and the bottom plate. Thus, the locking device prevents the clamping force decreases by increasing the distance between the bottom plate and the receiving device.

Preferably, the stator further comprises a release device that is motion coupled to the barrier device. By pressing the release device, the locking device can be transferred to the release position. Consequently, by simply operating the release device, which may be realized for example by a release button, the mast or rod-shaped part after actuation of the release device can be easily pulled out of the stand, since the distance between the receiving device and the bottom plate can be increased, whereby the force , by means of which the holding elements are braced on the Christmas tree, is reduced.

Preferably, the coupling device comprises a rack and the tensioning device is preferably connected to the bottom plate and comprises a gear and a non-rotatably connected to the gear tensioner. The gear and the tension roller are rotatably mounted about a common axis of rotation. The traction device, which may be configured, for example, as a flexible tensioning cable, is connected to the tensioning roller and can be wound up and down on an outer periphery of the tensioning roller. The rack meshes with the gear, and by reducing the distance between the receiving device and the bottom plate, the receiving device by means of the rack, the gear and thus the tension roller in rotation, so that the Zuginrich- tion on the outer circumference of the tension roller is rolled up. The diameter of the gear is smaller than the diameter of the outer periphery of the tension roller, so that by tightening the distance between the receiving device and the bottom plate, the pulling device is tensioned.

A suitably configured coupling device and clamping device is particularly simple and inexpensive to produce and also very stable mechanically.

Preferably, the stator further comprises, in addition to the first clamping device, a second clamping device, which is identical in construction to the first clamping device. In this case, the second tensioning device is connected to a pulling device or to a plurality of pulling devices which are each coupled to a holding element or to a plurality of holding elements.

A suitably ausgestalteter stator has an increased stability, since the over the clamping device on the

Receiving device applied forces not only attack only at one point of the receiving device but at several, preferably symmetrically arranged locations.

Further advantages, details and features of the invention will become apparent from the illustrated exemplary embodiments. 1 shows a three-dimensional representation of a stator according to the invention without housing cover;

FIG. 2: a spatial representation of a recording meeinrichtung together with holding elements which are arranged on the receiving device; a plan view of the stator according to the invention shown in Figure 1, each clamping device is connected to a respective tensioning cable; the stand shown in Figure 3, each clamping device is connected to two tension cables; a side view of the schematically illustrated stator according to the invention, wherein the receiving device is in a loading position in which a distance of the receiving device to the bottom plate is maximum; the stand shown in Figure 3, wherein this comprises a water tank into which the receiving device is immersed; a spatial representation of the stator according to the invention shown in Figure 6; and FIG. 8: a spatial representation of another

Embodiment of the stator according to the invention. In the following description, like reference numerals designate like components and like features, so that a description made with respect to a figure with respect to a component also applies to the other figures, so that a repetitive description is avoided.

FIG. 1 shows a schematic three-dimensional representation of a stator according to the invention without a housing cover. Figure 2 shows a three-dimensional view of a receiving device 10 together with holding elements 30, which is arranged on the receiving device 10. The receiving device 10 is one of the components of the stand according to the invention. FIG. 3 shows a plan view of the stand shown in FIG. Furthermore, Figure 5 shows a side view of the stand shown in Figures 1 and 3, wherein the receiving device 10 is in a loading position in which a distance of the receiving device 10 to a bottom plate 2 is maximum. In the following, the operation of the stator according to the invention will be explained with reference to Figures 1 to 3 and 5, for example.

The stator according to the invention and also to be called a Christmas tree stand comprises a housing which comprises a base plate 2 and a housing cover 8 (FIG. 5). Guiding devices 4 in the form of guide webs 4 or sliding webs 4 are fastened to the base plate 2. These guide means 4 may also be integral, i. Substantially be executed with the bottom plate 2. The guide webs 4 are perpendicular to the bottom plate. 2

Furthermore, the Christmas tree stand comprises a receiving direction 10, which is configured in the illustrated embodiment as a receptacle 10 with a support base 12 and a housing wall, protrude from the radial projections 11. A plurality of holding elements 30 in the form of holding hooks 30 are connected to the receiving device 10. Each retaining element 30 is arranged offset around a central axis 16 of a receiving space 14 of the receiving device 10 and in each case about a horizontal pivot axis 32 or about a pivot axis 32 with a horizontal component away from the central axis 16 in the direction of a release position and on the central axis 16 in the direction a fixing position pivoted. In this case, the respective holding elements 30 are each arranged between two radial projections 11 of the receiving device 10 and are pivotably mounted with the respective radial projections 11 about the pivot axis 32. The respective lower sections of the holding elements 30 are connected via tension springs 38 with horizontal suspension bolts 36. The respective tension springs 38 exert a force on the respective holding elements 30 in the direction of the release position of the respective holding elements 30, so that the holding elements 30 always remain in the release position without any further force being exerted. However, for these so-called second force and / or spring devices 38, tension springs 38 do not necessarily have to be used, but also leg springs can be used, one leg of which is connected, for example, to an inner wall of the receiving device 10 and the other leg to the holding element 30.

The receiving device 10 is guided by means of the guide webs 4 distance variable to the bottom plate 2. In this case, the respective radial projections 10 protrude in accordance with seen receiving spaces between respective guide webs 4, so that only an axial lifting movement of the receiving device 10 with respect to the bottom plate 2 is possible.

The stand further comprises in the dargestellen embodiment example, two clamping devices which are rotatably connected to mounting walls 7 of the bottom plate 2. Each tensioning device comprises a gearwheel 40 and a tensioning roller 42 connected in a rotationally fixed manner to the gearwheel 40. Both the gearwheel 40 and the tensioning roller 42 are rotatably mounted about a common axis of rotation 48.

The receiving device 10 further comprises two provided on radial projections 11 coupling means 20 in the form of racks 20, which are arranged at two opposite ends of the receiving device 10. The respective racks 20 each mesh with a gear 40 associated therewith.

With the tension roller 42 shown on the left in FIG. 3, a first pulling device 81 in the form of a first tensioning cable 81 is connected. The first tensioning cable 81 is connected to the outer circumference 44 of the tensioning roller 41 at an attachment point 46. The first tensioning cable 81 runs through an opening provided in the outer wall of the receiving device 10 into the inner space or into the receiving space 14 of the receiving device 10. The first tensioning cable 81 is coupled to two holding elements 30 shown in FIG. 3 below, in that the first Tensioning cable 81 is guided through holes 34 in the respective holding elements 30 therethrough. The tension roller 42 shown in the figures on the right is coupled to a second tensioning cable 82 in the same manner as the first tensioning cable 81 is coupled to the tensioning roller 42 shown on the left in the figures. Each of the tensioning cables 81, 82 has a first loop 81 'and a second loop 82 "at their respective free ends. The first tensioning cable 81 is coupled to the second tensioning cable 82 in that the first tensioning cable 81 passes through the second loop 82'. In the same way, the second tensioning cable 82 is coupled to the first tensioning cable because the second tensioning cable 82 is passed through the first loop 81 ' a loading position in which the distance between the receiving device 10 and the bottom plate 2 is maximum. In this loading position 10, the respective holding elements 30 are pivoted into the release position due to the force exerted by the tension springs 38, so that a mast or rod-shaped part can be guided from above between the holding elements 30 in the receiving device 10. The trunk, for example, the trunk of a Christba order, can be placed on the support base 12 of the receiving device 10. Centered on the support floor 10, a central mandrel 15 is provided, which can drill into the trunk of the Christmas tree. Due to the weight force exerted by the stem on the receiving device 10, the receiving device 10 is pressed downwards in the direction of the bottom plate 2. Since the racks 20 each mesh with a gear 40, the receiving device 10 drives the two gears 40 by means of the racks 20 due to the force exerted on them. there When the pickup 10 is depressed, the gear shown on the left turns clockwise and the gear 40 on the right turns counterclockwise. Consequently, the tensioning cables 81, 82 are wound on the left and right outer peripheries 44 of the tensioning rollers 42.

Since the diameter of the outer periphery 44 of the tension roller 42 is greater than the diameter of the gear 40, the winding length of the wound on the outer peripheries 44 tensioning cables 81, 82 is greater than the distance to which the receiving device 10 moves toward the bottom plate 2. Consequently, the first tensioning cable 81 and the second tensioning cable 82 are tensioned in the direction of the base plate 2 by a depression of the receiving device 10 in that the two tensioning cables are rolled up in the pulling direction Z on the outer peripheries 44 of the tensioning roller 42.

The stand may further comprise a lifting device, not shown in the figures, in the form of a compression spring, which is arranged between the base plate 2 and the receiving device 10. The compression spring exerts on the receiving device 10 a force which causes an increase in the distance between the receiving device 10 and the bottom plate 2, so that the unloaded stand is held by means of the lifting device in the loading position.

The stand further comprises two locking devices 50 in the form of pawls 50, which can each engage in the gears 40 and allow only a movement of the gears 40, which with a downward movement of the receiving device 10 in the direction of the bottom plate 2 kor- respondiert. Consequently, when engaging in the gears 40 pawl 50, the receiving device 10 can not be raised. When setting a Christmas tree or more generally a trunk in the stand is pressed by the weight of the receiving device 10 in Rich ^¬ tion of the bottom plate 2, so that the respective holding elements 30 are pivoted to the trunk and tensioned. By manual depression of the trunk, an additional force can be exerted on the receiving device 10, so that the receiving device 10 is pressed further in the direction of the bottom plate 2. Due to the engaging in the gears 40 locking hook 50, the receiving device 10 can not be removed from the bottom plate 2 after releasing the trunk, so that the holding elements 30 are clamped with an increased clamping force on the trunk, this clamping force is greater than that Weight of the trunk.

The respective pawls 50 are pressed in the illustrated embodiment by means of two compression springs 56 which are arranged between the mounting walls 7 and the corresponding pawl 50 to the respective gears 40, so that the pawls 50 always engage in the gears 40. The locking hooks 50 are further connected to a coupling cable 70, which is coupled to a release device 60 in the form of a release button 60. The release button 60 is arranged between two cable supports 62 on which the coupling cable 70 is guided and supported (FIG. 5a). By depressing the release button 60, the coupling cable 70 is tensioned, so that the coupling cable 70 forces the respective locking hooks 50, so that the locking hooks 50 pivot about their respective axes of rotation 54 away from the toothed wheels 40. Thus, by operating the release button 60, the tension on the tensioning cables 81, 82 can be reduced, thus, after actuation of the release button 60, a trunk held by the upright 20 can simply be withdrawn from the stand. In the dargestellen embodiment, the release button 60 is provided in the housing cover 8, so that the operation of the release button 60 can be done for example with a foot. It can be seen from FIGS. 6, 7 and 8 that the stand according to the invention can also be provided with a water tank 6. The water tank 6, for example, be an integral part of the bottom plate 2 and be connected to this cohesively. The wall of the water tank 6 surrounds the entire receiving device 10 and the entire clamping devices 40, 42. The support floor 12 of the receiving device 10 has irrigation openings 13 through which located in the water tank 6 water can penetrate into the receiving space 14 of the receiving device 10. In Figure 7, the stator according to the invention shown in Figure 6 is shown spatially, wherein the water tank 6 is not shown continuously, so that the interior of the stand is better displayed and visible.

The stand in Figure 8 comprises a water tank 6, which has a circumferential groove 6 ', in which a spring of a lid, not shown, can engage. Thus, by placing the lid, the water tank 6, which in this embodiment is the entire lower part of the stand, can be easily connected to the lid. From Figure 8 it is clearly visible that the guide webs 4 are designed in one piece with the water tank 6 and the bottom plate 2. The remaining mode of operation of the stand shown in FIGS. 6, 7 and 8 is identical to the functioning of the stand illustrated in FIGS. 1 to 3 and 5. FIG. 4 shows a modification of the stator according to the invention, in which each tensioning roller 42 is connected to two tensioning cables 81, 82. Here, the tension pulley 42 shown on the left in Figure 4 is coupled by means of the first tensioning cable 81 with the two dargestellen in Figure 4 above holding elements 30. The other end of the first tensioning cable 81 is in turn connected to the tensioning roller 42 shown on the right in FIG. The second tensioning cable 82 is coupled to the lower holding elements 30 shown in FIG. 4 and likewise connected in each case to the tensioning rollers 42 shown on the left and on the right in FIG. The remaining functionality of the stator shown in Figure 4 is identical to the functionality of the stand shown in Figures 1 to 3 and 5. Of course, the stand shown in Figure 4 may also include a water tank 6 shown in Figures 6 to 8.

The illustrated stand may preferably be made predominantly or entirely of plastic, in particular cast. At least the housing, and in particular the housing bottom 2 made of a one-piece plastic part, in particular be cast from plastic. Individual parts of the internal structures shown in the figures can also be retrofitted, in particular by means of screw fasteners. 1453 P 16

LIST OF REFERENCE NUMBERS

2 bottom plate (of a housing)

4 guide device, sliding bridge

6 water tank

7 mounting wall

8 housing cover

10 recording device

11 Radial projection (receiving device)

12 support floor (the receiving device)

13 Irrigation opening (in the support floor)

14 recording room

15 central spike

16 central axis (the recording room)

20 coupling device, rack

30 retaining element

32 pivot axis (of the holding element)

34 bore (by holding element)

36 horizontal suspension bolts

38 (second) power and / or spring device

40 gear (the clamping device)

42 tensioning roller (the tensioning device)

44 outer circumference (the tension roller)

46 attachment point (the tension roller)

48 axis of rotation (of the gear and the tension roller)

50 locking hook, locking device

52 attachment point (on the pawl)

54 rotation axis (of the pawl)

56 Force and / or spring device (for pawls) 60 release device, release button

70 coupling rope (between release button and pawl)

72 rope supports (for coupling rope)

81 (first) pulling device, first tensioning cable

81 'first loop (of the first tensioning cable)

82 second drawbar, second tensioning cable

82 'second loop (the second tensioning rope)

90 deflection device

Z pulling direction (the pulling device)

Claims

Claims;

1. Stand for mounting mast or rod-shaped parts, in particular Christmas trees, the stand having the following features:

at least two holding elements (30) are connected to a receiving device (10) for receiving the mast or rod-shaped part and arranged offset around a central axis (16) of a Aufnähmeräumes (14) of the receiving device (10) and each about a horizontal pivot axis (32) or pivotable about a pivot axis (32) with a horizontal component away from the central axis (16) in the direction of a release position or open position and on the central axis (16) in the direction of a fixing position; the receiving device (10) is mounted variable in distance to a bottom plate (2) of the stator;

the receiving device (10) is connected to at least one coupling device (20), which is coupled to a tensioning device (40, 42);

the tensioning device (40, 42) is connected to a pulling device (81, 82) or to a plurality of pulling devices (81, 82) which are each coupled to a holding element (30) or to a plurality of holding elements (30) is / are;

By reducing the distance between the Aufnahmee- device (10) and the bottom plate (2) drives the receiving device (10) via the coupling device (20), the clamping device (40, 42) such that the

Traction device (81, 82) or the drawbars (81, 82) of the tensioning device (40, 42) in a pulling direction (Z) is pulled and / or kraftbeaufschlagt so that the clamping device (40, 42) by means of the pulling device ( 81, 82) or by means of the pulling devices (81, 82) counteracts or prevents a pivoting of the holding element (30) or the holding elements (30) away from the central axis (16) in the direction of the release position.

2. Stand according to claim 1, characterized in that the stand further comprises at least one with the bottom plate (2) connected to guide means (4), by means of which the receiving device (10) from the variable position to the bottom plate (2) is guided.

3. Stand according to one of the preceding claims, characterized in that the stand further comprises a lifting device, which is connected to the bottom plate (2) or a housing cover (8) and between the receiving device (10) and the bottom plate (2). or the housing cover (8) is arranged and a the distance between the bottom plate (2) and the receiving device (10) increasing force on the receiving device (10) exerts.

4. Stand according to one of the preceding claims, characterized by the following features: the stand comprises a locking device (50);

the locking device (50) can be transferred from a blocking position into a release position;

in the blocking position, the locking device (50) interacts with the clamping device (40, 42) and / or the coupling device (20) and / or the receiving device (10) such that the distance between the receiving device (10) and the Bottom plate (2) can not be enlarged; and

in the release position of the locking device (50) this does not interfere with the clamping device (40, 42) and / or the coupling device (20) and / or the receiving device (10), so that the distance between the receiving device (10) and the bottom plate ( 2) is enlargeable.

5. Stand according to claim 4, characterized in that the stand further comprises a force and / or spring device (56) which acts on the locking device (50) in the direction of locking position.

6. Stand according to one of claims 4 or 5, characterized in that the stator further comprises a release device (60) which is coupled in movement with the locking device (50), wherein by operating the release device (60), the locking device (50) in the Release order.

7. Stand according to one of the preceding claims, character- ized in that the stand further one of

Number of holding elements (30) corresponding number of second force and / or spring means (38), each connected to a holding element (30) and each are at least indirectly coupled to the receiving device (10) and in each case the force applied to them holding element (30) towards the release position.

8. Stand according to one of the preceding claims, characterized by the following features:

the coupling device (20) comprises a rack (20);

- The clamping device (40, 42) is connected to the bottom plate (2) and comprises a gear (40) and with the gear (40) rotatably connected tension roller (42);

the gear (40) and the tension roller (42) are rotatably mounted about a common axis of rotation (48);

the pulling device (81, 82) is connected to the tensioning roller (42) and can be rolled up and down on an outer circumference (44) of the tensioning roller (42);

the rack (20) meshes with the gear (40);

- By reducing the distance between the receiving device (10) and the bottom plate (2) the receiving device (10) by means of the rack (20) the gear (40) in rotation, so that the pulling means (81, 82) on the outer periphery of Tensioning roller (42) is rolled up;

the diameter of the gear (40) is smaller than the diameter of the outer periphery (44) of the tension roller (42), so that by reducing the distance between the receiving device (10) and the bottom plate (2), the pulling means (81, 82) is tensioned ,

9. Stand according to one of the preceding claims, characterized in that the pulling device (81, 82) of the Clamping device (40, 42) leads to all holding elements (30).

10. Stand according to one of the preceding claims, characterized by the following features:

the stator further comprises a second tensioning device in addition to the first tensioning device (40, 42)

(40, 42), which are identical in construction to the first clamping device

(40, 42);

- The second tensioning device (40, 42) is connected to a pulling device (81, 82) or with a plurality of pulling means (81, 82) which is in each case coupled to a holding element (30) or with a plurality of holding elements (30) / are.

11. Stand according to claim 10, characterized by the following features:

the first tensioning device (40, 42) is connected to a first pulling device (81), which is coupled to at least one first retaining element (30) and at a first end opposite to the first tensioning device (40, 42) has a first loop (81 '). ) having; the second tensioning device (40, 42) is connected to a second pulling device (82) which is coupled to at least one second retaining element (30) and to a second loop (82 ') located opposite one of the second tensioning device (40, 42). ) having ;

the first pulling device (81) is coupled to the second pulling device (82) in that the first

Pulling device (81) through the second loop (82 ') and the second pulling device (82) through the first loop (81') is guided.

12. Stand according to claim 10, characterized by the following features:

one end of a first pulling means (81) is connected to the first tightening means (40, 42) and the other end of the first pulling means (81) is connected to the second tightening means (40, 42);

one end of a second pulling device (82) is connected to the first tensioning device (40, 42) and the other end of the second pulling device (82) is connected to the second tensioning device (40, 42); and

a first retaining element (30) is coupled to the first pulling device (81) and a second retaining element (30) is coupled to the second pulling device (82).