Dismountable and height-adjustable frame for slacklines

Abstract

The invention relates to a dismountable and height-adjustable frame (1) for slacklines (2), having a strip bearing surface (3) which rests on two upwardly converging supports (4) which are connected, by way of connecting elements (5), at the bottom to a transverse tube (6), wherein the supports (4) are designed as rectangular telescopic shaped tubes, at the upper ends of which a strip bearing plate (3) rests, said strip bearing plate being U-shaped and downwardly open, there being, at this upper end of the support front side (4a), a convex curved shaped (7) in the material starting from the support surface (4c) facing the supports (4) in the operating position, and there being, at the upper end of the support rear side (4b), a concave curved shape (8) in the material starting from the surface (4c) facing the supports (4) in the operating position.

Description

[0001] Description

[0002] Title of the invention: Dismantable and height-adjustable frame for slacklines

[0003] [1] The invention relates to a demountable and height-adjustable frame for slacklines with a webbing support surface which rests on two upwardly converging supports which are connected to a cross tube at the bottom by connecting elements.

[0004] field of technology

[0005] [2] “Slackline” is the modern term for balancing webbing, which is usually attached between two trees at a low height. If no suitable trees are available, a slackline can also be mounted at other anchor points, such as ground anchors. Frames are needed to hold the slackline at the same height above the ground, so that there is sufficient height for balancing on the slackline and the person balancing in the middle of the slackline does not touch the ground.

[0006] State of the art

[0007] [3] A frame offered on the market is known from WQ2016037203A1, in which, however, depending on the set height, the supports protrude more or less far above the band support plate, which poses a safety risk to the person balancing.

[0008] Technical task

[0009] [4] The object of the invention is therefore to create a height-adjustable frame for slacklines which has no parts protruding upwards above the webbing support plate, which can be easily adjusted in height, and at the same time ensures that the webbing support plate is always horizontally adjustable, even on slopes. In addition, the frame should be easily foldable for space-saving transport.

[0010] Technical solution and advantageous effects of the invention

[0011] [5] According to the invention, the problem of claim 1 is solved in that the supports are designed as rectangular telescopic profile tubes, at the upper ends of which a U-shaped downwardly open strip support plate rests, and at this upper end of the support front has a material-side convex curve extending from the support surface facing the supports in the operating position, and at the upper end of the support rear has a material-side concave curve extending from the surface facing the supports in the operating position, which transitions into a straight line and then forms a material-side convex curve downwards in the direction of the support surfaces of the supports facing each other in the operating position, wherein in the operating position of the support the material-side convex curve at the upper end of the support front engages with the material-side concave curve at the upper end of the support rear of the opposite support,and the material-side convex curve shape at the upper end of the back of the support lies tangentially against the facing support surface of the opposite support, and a recess is formed from the back of the support to at least the centrally running longitudinal axis of the laterally facing support surfaces in the operating position, which interlock in the operating position of the supports, and that the supports have bearing bores which are arranged in alignment with two spaced-apart bearing bores on the vertical webs of the U-shaped downwardly open strip support plate for receiving the bearing elements, wherein the supports are pivotably connected to the strip support plate by means of the bearing elements.

[0012] [6] Such a frame enables quick and easy height adjustment and adaptation to slope gradients using telescopic beams. The concave curve at the upper end of the beam's rear surface interlocks with the convex curve at the front surface in the operating position. This has the surprising effect that when one beam is rotated by a certain angle around its bearing bore, the opposite beam automatically rotates by the same angle in the opposite direction. In other words, the beams' freedom of movement along their longitudinal axis is prevented, so that despite the two movable bearing points, the strip support plate can no longer change its angle and therefore always maintains a symmetrical angle between the two beams.Thus, the belt support surface is always horizontal on level surfaces. On slopes, the belt support plate can be adjusted to be as horizontal as possible by appropriately asymmetrically telescoped beams. Additionally, the convex curve on the back of the beam rests tangentially against the opposite beam, which further restricts the beam's movement along its longitudinal axis and ensures the belt support plate is held even more precisely at a symmetrical angle between the beams. The angle of the straight line connecting the concave curve on the back of the beam with the convex curve on the back determines the maximum spread angle of the beams in their operating position and thus forms an end stop. For example, at a maximum beam spread angle of 90°, this straight line is perpendicular to the beam's longitudinal axis.Because the different curved shapes are arranged in opposite directions on the front and back of the supports, any play between the interlocking curved shapes described above and the support surfaces tangentially adjacent to the convex curved shapes is further reduced, thus improving the maintenance of the symmetrical angle. The opposing recesses on the facing surfaces of the supports allow them to slide into one another at these points.

[0013] [7] An advantageous embodiment of the invention according to claim 2 consists in that equal and opposite webs are formed along the center of the longitudinal axis on the mutually facing surfaces of the supports.

[0014] [8] This has the positive effect that the supports are centered under the strip support plate and held in position.

[0015] [9] According to claim 3, it is also advantageous if the rear side of the beams forms support points for the strip support plate at the upper end in the form of a straight line extending perpendicular to the longitudinal axis of the beams, which originates from the beam surface facing the beams in the operating position and transitions outwards from the extended longitudinal axis of the beam passing through the center of the bearing bore into a convex arc segment on the material side, the radius of which originates from the center of the bearing bore of the beams.

[0010] The positive effect here is that when the frame is folded at a 0° spread angle of the beams, the straight line on the upper end face of the beams rests on the lower edge of the support plate, the beams can hardly be moved relative to each other, and thus easier engagement of the opposing convex and concave curves at the upper ends of the beams is made possible.As soon as the beams are in their operating position with a spread angle greater than 0°, contact points form between the convex circular arc of the beam ends and the support plate. This has the positive effect of transferring the forces of the slackline directly to the beams via the support plate, in addition to the bearing elements. Furthermore, this also reduces any potential play between the interlocking curves of the upper ends of the beams, thus stabilizing the support plate even more effectively and precisely at a symmetrical angle between the beams and in a horizontal position.

[0016]

[0011] Another advantageous variant of the invention according to claim 4 consists in that the supports have a nose formed above the recess in the support surfaces facing each other in the operating position, which projects 10°-45° in the direction of the web of the support opposite in the operating position.

[0017]

[0012] The positive effect is that when the frame is folded together at a 0° spreading angle of the supports, this nose projecting 10°-45° towards the opposite support is guided over the web of the opposite support and thus reliably prevents displacement along the longitudinal axis of the adjacent supports in both directions and thus ensures a secure locking of the convex curve of the front of the support into the concave curve of the rear of the support when spreading into the operating position of the supports.

[0018]

[0013] According to claim 5, a further advantageous embodiment of the invention consists in the fact that the band support plate has lateral stops for the slackline in the form of cylinder head screws.

[0019]

[0014] This has the advantage that the slackline cannot slip off the support plate, especially during strong lateral oscillations of the slackline, as can typically occur when balancing. The round head shape of the socket head cap screws protects the slackline from chafing at its lateral edges.

[0020]

[0015] According to claim 6, it is further advantageous if the coordinates for the material-side concave curve formed at the upper end of the back of the support are determined by the parametric representation P(x,y) is calculated where a is half the inclination angle of the supports (4) to each other, A is half the distance between the bearing holes of the strip support plate and B is the distance of the bearing hole of the support to the constructive height of the curve start of the concave curve shape of the support back, and the coordinate origin (x=0, y=0) is located at half the distance between the spaced bearing holes of the support plate.

[0021]

[0016] The surprising effect is that the shaping by the above-mentioned formulas of the parameter representation makes it possible for the material-side convex curve shape on the front of the support to interlock with the material-side concave curve shape on the back of the support to be exact, without which an exact symmetrical angle of the strip support plate between the supports would not be possible.

[0022]

[0017] A further advantageous embodiment of the invention according to claim 7 consists in the fact that the material-side convex curve formed at the upper end of the front of the support has a curve part in the upper 45° section of the curve which is formed by a horizontal reflection of the upper 45° section of a material-side concave curve part of the material-side concave curve of the rear of the support about a vertical axis, and the material-side convex curve formed at the upper end of the front of the support has a curve part in the lower 45° section of the curve which is formed by a reflection of the upper curve part of the curve about a 45° axis downwards, which has its starting point on the support surface facing the support in operating position at the level of the lower endpoint of the concave curve formed on the rear of the support.

[0023]

[0018] The advantage of a smaller clearance between the interlocking material-side convex curve of the support front and the material-side concave curve of the support rear arises from the fact that the upper 45° of the material-side convex curve of the support front is a vertical reflection of the upper 45° of the material-side concave curve on the support rear, and the lower 45° of the material-side convex curve of the support front is formed by a vertical and horizontal reflection of the upper 45° of the material-side concave curve on the support rear. The material-side convex curve of the support front can also be formed by simpler radii or other geometric shapes that fit into the material-side concave curve of the support rear, but this results in smaller contact areas and potentially larger clearance.

[0024] Brief description of the drawings

[0025]

[0019] The invention is explained in more detail with reference to the drawings, whereby other solutions which differ from the solutions described are possible without leaving the scope of the invention.

[0026] Fig. 1

[0027]

[0020] The frame according to the invention is shown schematically in perspective view with a slackline.

[0028] Fig. 2

[0029]

[0021] The frame according to the invention in elevation in various telescopic support heights and inclinations.

[0030] Fig. 3

[0031]

[0022] The frame according to the invention shown in perspective in a disassembled state after removal of the connecting elements between the beams and the cross tube.

[0032] Fig. 4

[0033]

[0023] The upper end of the support according to the invention in perspective. Fig. 5

[0034]

[0024] The upper end of the front of the support according to the invention in elevation.

[0035] Fig. 6

[0036]

[0025] The upper end of the back of the support according to the invention in elevation.

[0037] Fig. 7

[0038]

[0026] The upper end of the support side facing each other in the operating position according to the invention in elevation.

[0039] Fig. 8

[0040]

[0027] The curves according to the invention are shown schematically interlocking at the upper end of the supports in the 60° operating position.

[0041] Fig. 9

[0042]

[0028] The curves according to the invention are shown schematically interlocking at the upper end of the supports in a 90° operating position.

[0043] Fig. 10

[0044]

[0029] The upper end of the support according to the invention in perspective.

[0045] Fig. 11

[0046]

[0030] The upper ends of the supports according to the invention in plan view at approximately 30° operating position.

[0047] Fig. 12

[0048]

[0031] The upper ends of the supports according to the invention with support plate in the side view at approximately 60° operating position.

[0049] Fig. 13

[0050]

[0032] The band support plate according to the invention in perspective.

[0051] Fig. 14

[0052]

[0033] The band support plate according to the invention with support in operating position, in perspective.

[0053] Fig. 15

[0034] The band support plate according to the invention in longitudinal section with the upper ends of the supports in operating position in elevation.

[0054] Fig. 16

[0055]

[0035] The upper ends of the supports according to the invention in elevation.

[0056] Fig. 17

[0057]

[0036] The upper ends of the supports according to the invention with a projecting nose in elevation.

[0058] Fig. 18

[0059]

[0037] The upper end of the carrier according to the invention with a projecting nose in plan view.

[0060] Fig. 19

[0061]

[0038] The upper ends of the supports according to the invention with a protruding nose at 0° spread angle in plan view.

[0062] Fig. 20

[0063]

[0039] The band support plate according to the invention with lateral stops in perspective.

[0064] Fig. 21

[0065]

[0040] The curves according to the invention are shown schematically with calculation data.

[0066] Fig. 22

[0067]

[0041] The curves according to the invention are shown schematically.

[0068] Fig. 23

[0069]

[0042] The curves according to the invention at the upper end of the supports are shown schematically in elevation.

[0070] Fig. 24a

[0071]

[0043] The curves according to the invention at the upper end of the supports are schematically folded in elevation.

[0072] Fig. 24b

[0044] The curves according to the invention at the upper end of the supports schematically interlocking in operating position 60° in elevation.

[0073] Fig.24c

[0074]

[0045] The curves according to the invention are shown schematically interlocking at the upper end of the supports in the operating position 90° in elevation.

[0075] Explanation of the drawings

[0076]

[0046] Fig. 1 schematically shows the demountable and height-adjustable frame 1 according to the invention for slacklines 2 with a U-shaped downwardly open strap support plate 3, which rests on two upwardly A-shaped telescopic supports 4, which are connected to the strap support plate 3 by means of bearing elements 17 and to a cross tube 6 on the bottom side by means of connecting elements 5, assembled with slackline 2.

[0077]

[0047] Fig. 2 shows the frame 1 according to the invention in elevation in two different support heights set by symmetrical telescoping of the supports 4 and a slope set by asymmetrical telescoping of the supports 4.

[0078]

[0048] Fig. 3 illustrates the frame 1 according to the invention in perspective in a disassembled state after removal of the connecting elements 5 between the supports 4 and the cross tube 6.

[0079]

[0049] Fig. 4 shows the upper ends of the supports 4 according to the invention in perspective, with the front of the support 4a in the foreground. On the upper front of the support 4a, it shows the material-side convex curve 7 beginning on the side surface 4c, and on the back of the support 4b, the material-side concave curve 8 beginning on the side surface 4c, which transitions into a straight line 9, which then merges into a downwardly material-side convex curve 10 that ends on the side surface 4c. The front of the support 4a and the back of the support 4 have an aligned bearing bore 14. Also visible at the upper end of the back of the support 4b is the straight bearing surface 19, which transitions into a material-side convex arc segment 21. On the side surface 4c, a nose 23 extending from the rear of the support 4b with the recess 13 underneath can be seen; on the same side surface 4c, a web 12 extending from the front of the support 4a is also visible.

[0080]

[0050] Fig. 5 illustrates the upper end of the support front 4a according to the invention in elevation with the material-side convex curve shape 7 beginning on the support side 4c facing the operating position.

[0081]

[0051] Fig. 6 shows the upper end of the support rear side 4b according to the invention in elevation with the material-side concave curve 8 beginning on the support side 4c facing the operating position, which transitions into a straight line 9 which in turn leads downwards into a material-side convex curve towards the support side 4c.

[0082]

[0052] Fig. 7 illustrates the upper end of the supports 4 according to the invention in elevation with the support side 4c facing each other in the operating position in the foreground with the longitudinal axis running centrally on this support surface 4c.

[0083] 11 , on this longitudinal axis there is a web 12 in the direction of the front of the support 4a, and along the same longitudinal axis 11 a corresponding recess 13 in the direction of the rear of the support 4b.

[0084]

[0053] Fig. 8 schematically shows the curve shapes 7, 8 and 10 according to the invention interlocking at the upper ends of the supports 4 in a 60° operating position. The material-side convex curve shape 7 on the front of the support 4a interlocks with the material-side concave curve shape 8 of the rear of the support 4b. At the same time, the support surface 4c lies tangentially against the material-side convex curve shape 10 of the rear of the support 4b.

[0085]

[0054] Fig. 9 schematically illustrates the curve shapes 7, 8 and 10 according to the invention interlocking at the upper ends of the supports 4 in a 90° operating position. In this operating position, the web 12 of the support surface 4c of the support 4 lies flat on the straight line 9 of the rear side 4b of the support and thus forms an end stop.

[0086]

[0055] Fig. 10 shows the upper end of the support 4 according to the invention in perspective, with the rear of the support 4b and the side support surface 4c in the foreground, the longitudinal axis 11 running in the middle of the side support surface 4c. The web 12 according to the invention is formed from the longitudinal axis 11 towards the front of the support 4a. On the other side of the longitudinal axis 11, a recess 13 is formed oppositely towards the rear of the support 4b. Above the recess 13, a lug 23 can be seen at the uppermost end of the side surface 4c.

[0087]

[0056] Fig. 11 illustrates the upper ends of the supports 4 according to the invention in elevation with two supports 4 nested inside each other at approximately 30° operating position. The web 12, which extends from the support side 4a to the longitudinal axis 11, engages in the corresponding recess 13, which extends from the rear side 4b of the opposite support 4 to the longitudinal axis 11. Also visible are the lugs 23 projecting or bent upwards at 10°-45° into the respective opposite support 4.

[0088]

[0057] Fig. 12 shows the upper ends of the supports 4 according to the invention with the support plate in a side view at approximately 60° operating position. The bearing openings 15 on the lateral webs 16 of the strip support plate 3 are arranged in alignment with the bearing openings 14 of the upper end of the supports 4, and the bearing element 17 enables a pivotable connection between the strip support plate 3 and the supports 4. Furthermore, the bearing points 18 of the rear sides 4b of the supports on the underside of the support plate 3 are shown.

[0089]

[0058] Fig. 13 illustrates the strip support plate 3 according to the invention in perspective with two spaced-apart bearing openings 15 on the side webs 16 and the bearing elements 17.

[0090]

[0059] Fig. 14 shows the band support plate 3 according to the invention in perspective with the supports 4 in the operating position 60°. The supports 4 are pivotably connected to the support plate 3 by means of bearing elements 17, which assumes a symmetrical angle to the supports 4.

[0091]

[0060] Fig. 15 illustrates the strip support plate 3 according to the invention in longitudinal section with the upper ends of the supports 4 in operating position 30° in elevation. At the upper end of the rear side 4b of the support there is a straight line 19 which is perpendicular to the longitudinal axis 20 of the support 4, the straight line 19 extends from the upwardly extended longitudinal axis 20 running through the center of the bearing opening 14 into a material-side convex circular arc segment 21 which corresponds to the radius 22 in length from the center of the bearing opening 14 along the longitudinal axis 20 to the straight line 19. In the operating position 30° shown, a point of the circular arc segment 21 forms a support point 18 on the strip support plate 3.

[0061] Fig. 16 shows the upper ends of the supports 4 according to the invention in elevation, on the left the front of the support 4a with the material-side convex curve shape 7 in the foreground, and on the right the rear of the support 4b with the material-side concave curve shape 8 in the foreground.The rear side 4b of the support shows in the foreground at the upper end of the support 4 a straight line 19 perpendicular to the longitudinal axis 20 of the support 4, which from the longitudinal axis 20 running through the center of the bearing opening 14 transitions into a material-side convex arc segment 21, the radius 22 of which originates from the center of the bearing opening 14.

[0092]

[0062] Fig. 17 illustrates the upper ends of the supports 4 according to the invention facing each other with a projecting nose 23 in elevation, once individually with the front side 4a and the rear side 4b of the support in the foreground, and once in a folded position with a 0° spread angle between the supports 4. At the upper end of the side surface 4c, the noses 23 projecting or protruding towards the opposite supports 4 are visible.

[0093]

[0063] Fig. 18 shows the upper end of the support 4 according to the invention with the nose 23 in plan view, wherein the nose 23 extends from the rear of the support 4b and projects outwards at a 10-45° angle on the side surface 4c of the support.

[0094]

[0064] Fig. 19 illustrates the upper ends of the supports 4 according to the invention with projecting noses 23 at a 0° spread angle in plan view. The projection of the noses 23 beyond the web 12 of the respective opposite support 4 can be seen.

[0095]

[0065] Fig. 20 shows the band support plate 3 according to the invention in perspective with lateral stops 24 in the form of cylinder head screws.

[0096]

[0066] Fig. 21 schematically illustrates the curves 7 and 8 according to the invention with the calculation data A for half the distance between the centers of the spaced bearing bores 15 of the support plate 3 and the distance between the center of the bearing bore 14 and the support surface 4c of the support 4, respectively, B for the distance from the center of the bearing bore 14 of the support 4 to the constructive height of the curve start of the concave curve shape 8 on the side surface 4c of the support 4, as well as the variable position angle α of the support 4. The coordinate origin (x=0, y=0) is located at half the distance between the spaced bearing bores 15 of the support plate 3.

[0097]

[0067] Fig. 22 schematically shows the curves 7 and 8 according to the invention with a vertical axis 25 separating the curves 7 and 8, and a 45° axis 26 dividing the curve 7 into an upper curve section 7' ​​and a lower curve section 7”, as well as a 45° axis that delimits the upper curve section 8' of the curve 8. The axis 25 runs vertically and centrally between the bearing bores 14 of two facing supports 4 in the 0° position. The two 45° axes originate on the vertical axis 25 at the level of the lower endpoint of the curve 8. The curve section 7' ​​is a horizontal reflection of the curve section 8' about the vertical axis 25. The curve section 7” is a reflection of the curve section 7' ​​about the 45° axis 26.

[0098]

[0068] Fig. 23 illustrates the curves 7, 8 and 10 according to the invention schematically in elevation in simplified form with the material-side convex curve shapes 7 of the front of the support 4a and on the back of the support 4b with the material-side concave curve shape 8 and the material-side convex curve shape 10, both of which are connected by a straight line 9.

[0099]

[0069] Fig. 24a shows the curves 7, 8, and 10 according to the invention schematically folded together at the upper end of the supports 4 at 0° spread angle of the supports 4 in elevation in simplified form, and serves only to illustrate the interlocking of the curve shapes.

[0100]

[0070] Fig. 24b illustrates the curves 7, 8, and 10 according to the invention schematically interlocking at the upper end of the supports 4 in the operating position at a 60° spreading angle of the supports 4 in elevation in simplified form, and serves only to illustrate the interlocking of the curve shapes.

[0101]

[0071] Fig. 24c shows the curves 7, 8, and 10 according to the invention schematically interlocking at the upper end of the supports 4 in the operating position at a 90° spreading angle of the supports 4 in elevation in simplified form, and serves only to illustrate the interlocking of the curve shapes.

Claims

1. Disassemblable and height-adjustable frame (1 ) for slacklines (2) with a strip support plate (3) which rests on two upwardly converging supports (4) which are connected at the bottom to a transverse tube (6) by connecting elements (5), characterized in that the supports (4) are designed as rectangular telescopic tubes, at the upper ends of which the U-shaped downwardly open strip support plate (3) rests, and at this upper end of the front of the support (4a) has a material-side convex curve (7) extending from the support surface (4c) facing the supports (4) in the operating position, and at the upper end of the rear of the support (4b) has a material-side concave curve (8) extending from the surface (4c) facing the supports (4) in the operating position, which transitions into a straight line (9) and then forms a material-side convex curve (10) downwards in the direction of the support surfaces (4c) of the support (4) facing each other in the operating position,wherein in the operating position of the beams (4) the material-side convex curve shape (7) at the upper end of the beam's front surface (4a) interlocks with the material-side concave curve shape (8) at the upper end of the beam's rear surface (4b) of the opposite beam (4), and the material-side convex curve shape (10) at the upper end of the beam's rear surface (4b) abuts tangentially against the facing beam surface (4c) of the opposite beam (4), and a recess (13) is formed from the beam's rear surface (4b) of the beam (4) to at least the centrally running longitudinal axis (1 1 ) of the beam surfaces (4c) facing each other laterally in the operating position, which interlock in the operating position of the beams (4), and that the beams (4) have bearing bores (14) which are connected to two spaced-apart bearing bores (15) on the vertical webs (16) of the U-shaped downwardly open strip support plate (3) for receiving the The bearing elements (17) are arranged in alignment,wherein the supports (4) are connected to the band support plate, (3) are pivotably connected by means of the bearing elements (17).

2. Disassemblable and height-adjustable frame (1 ) for slacklines (2) according to claim 1, characterized in that the In the operating position, a web (12) extends towards the front of the beam (4a) of the beam (4) along the longitudinal axis (1 1 ) of the beam (4) which runs centrally along this support surface (4c).

3. Disassemblable and height-adjustable frame (1 ) for slacklines (2) according to claim 1 or 2, characterized in that the rear side (4b) of the supports (4) forms support points (18) at the upper end for the strap support plate (3) in the form of a straight line (19) perpendicular to the longitudinal axis (20) of the supports (4), which originates from the support surface (4c) facing the supports (4) in the operating position and transitions outwards from the extended longitudinal axis (20) of the support (4) passing through the center of the bearing bore (14) into a material-side convex arc segment (21 ), the radius (22) of which originates from the center of the bearing bore (14) of the supports (4).

4. Disassemblable and height-adjustable frame (1 ) for slacklines (2) according to one of claims 1 to 3, characterized in that the supports (4) in the support surfaces (4c) facing each other in the operating position have a nose (23) above the recess (13) which projects 10°-45° in the direction of the web (12) of the support (4) opposite in the operating position.

5. Dismantable and height-adjustable frame (1 ) for slacklines (2) according to one of claims 1 to 4, characterized in that the strap support plate (3) has lateral stops (24) for the slackline (2) in the form of cylinder head screws.

6. Disassemblable and height-adjustable frame (1 ) for slacklines (2) according to one of claims 1 to 5, characterized in that the coordinates for the material-side concave curve (8) formed at the upper end of the support rear (4b) are determined by the parametric representation P(x,y) is calculated where α is half the inclination angle of the supports (4) to each other, A is half the distance between the bearing bores (15) of the strip support plate (3) and B is the distance of the bearing bore (14) of the support (4) to the constructive height of the curve start of the concave curve shape (8) of the support back (4b), and the coordinate origin (x=0, y=0) is located at half the distance between the spaced bearing bores (15) of the support plate (3).

7. Disassemblable and height-adjustable frame (1 ) for slacklines (2) according to any one of claims 1 to 6, characterized in that the material-side convex curve (7) formed at the upper end of the support front (4a) has a curve part (7') in the upper 45° section of the curve (7) which is formed by a horizontal reflection of the upper 45° section of a material-side concave curve part (8') of the material-side concave curve (8) of the support rear (4b) about a vertical axis (25), and the material-side convex curve (7) formed at the upper end of the support front (4a) has a curve part (7”) in the lower 45° section of the curve (7) which is formed by a downward reflection of the upper curve part (7') of the curve (7) about a 45° axis (26),which has its starting point on the support surface (4c) facing the supports (4) in operating position at the level of the lower endpoint of the concave curve (8) formed on the back of the support (4b).i,

Images