DE29911927U1 - Steel sheet pile - Google Patents

Description

Mannheim, 13.07.1999 GM 2392.anm Il/bau

Representative: Patent Attorney Dipl.-Ing. W.-D. Fiscner Sophienstraße

D-68165 Mannheim

Applicant: Dr.-Ing. Raimund Reisacher Römerweg 21a

D-67117 Limburgerhof

Steel sheet post

The invention relates to a post made of sheet steel for wire frames in wine or fruit growing, with a base profile, for example in the form of a U, V, S, Z, square, round tube, diamond shape, open diamond shape, oval, open oval, and arranged on the legs of the base profile.

net internal single or double hooks, which are formed by punching tongues out of the steel sheet, whereby a wire insertion opening and a free space for the tension wire are formed.

Such a post is known (DE 25 600 90 C2) which is provided with double hooks, whereby the double hooks have tongues opposite one another in the area of the wire insertion opening with slanted edges. The tongues are relatively short, whereby their length, calculated from the bottom of the free space, corresponds to approximately twice the diameter of the tension wire.

To handle such a post, it is necessary to be able to insert the tension wire as easily as possible and, depending on the application, also to be able to fix it in the free space. The slanted wire insertion opening makes this difficult. This problem also arises when removing the wire mechanically or manually, as the machine in question pulls the wire upwards and/or outwards. The tension wire gets caught on the tongues.

The invention is based on the object of designing such a post in such a way that easy manual and mechanical insertion and removal of the wire is ensured, while maintaining the direction of the actuating force within an activity, with good compatibility with a harvester machine, whereby if necessary, fixing of the wire is also possible. '

This object is achieved according to the invention in that the hook has a wide insertion opening and has large sliding surfaces integrated into the hooks, wherein the angle between the sliding surfaces and the pile axis or the perpendicular to the pile axis is greater than the static friction angle of approximately 15° occurring between the wire and the hook with a tensile force direction outwards and/or upwards.

An advantageous embodiment provides that the sliding surfaces are curved.

Furthermore, it is advantageous that in the case of a single hook that is open at the top, the upper contact edge has an angle to the vertical on the pile axis that is larger than the static friction angle with respect to the direction of the tensile force upwards.

It is further proposed that in the case of a double hook, both exit edges have an angle to the pile axis which is greater than the static friction angle with respect to an outward tensile force direction.

An advantageous embodiment provides that in the case of a single hook the angle of the contact edge to the pile axis is selected in a range between greater than the static friction angle and greater than 90°.

It is also advantageous that the hook has an elongated tongue extending parallel to the pile axis, which is bendable at the hook base and which merges into a thickened nose at the wire insertion opening.

Furthermore, it is advantageous that the nose has a rounded outer edge.

It is proposed that the thickened nose be designed in the form of a back hook.

It is also advantageous that the thickened nose has a double wedge shape.

This design of the single hook has the significant advantage that the wire can be easily inserted into the wire insertion opening, and the opening can be closed without any special tools. The opening can be opened again just as easily to remove the wire. Due to the slight deformation of the hook, it can be opened and closed several times.

A further advantageous embodiment consists in that standing hooks or hooks inclined by a maximum of 60° are provided on lateral U- or V-shaped formations of the legs of the pile, wherein the inclined sliding surface on the formation has an asymmetrical arrangement of sliding surfaces to form a chicane.

It is also advantageous that the mouth opening of the chicane is designed as an additional hook.

According to a further embodiment, it is proposed that the mouth opening is designed as a single hook, with an elongated short tongue running parallel to the pole axis, which in the hook attachment

is not bendable and which has a thickened nose towards the wire insertion opening, for example in the form of a double wedge or a back hook.

The invention is explained in more detail in the following description with reference to embodiments shown in the drawing.

Show it,

Fig. 1 a partial view of a pile with a double ha

ken, where there is a wire at the bottom on the left side and a wire at the top on the right side,

Fig. 2 is a section along the line A-A in Fig. 1,

Fig. 3 a partial view of a pile with a single head

ken according to another embodiment,

Fig. 4 is a section along the line B-B in Fig. 3,

Fig. 5 is a partial view of such a pile with a

Single hook according to another embodiment,

Fig. 6 is a section along the line C-C in Fig. 5,

Fig. 7 a partial view of a pile in the area of a

Single hook in the left half of the illustration in open form and in the right half in closed form,

Fig. 8 is a section along the line D-D in Fig. 7,

Fig. 9 is a view of such a pile according to a

further embodiment in the left half of the illustration in open form and in the right half in closed form,

Fig. 10 is a section along the line E-E in Fig. 9,

Fig. 11 a partial view of a pile with a single head

ken with a chicane at the introduction of the wire, left with a straight and right with a curved sliding surface,

Fig. 11 a,

Fig. 11b, Partial views of the single hook on the front

and the rear sliding surface,

Fig. 12 is a section along the line F-F in Fig. 11,

Fig. 13 a partial view of the pile with a single hook

according to a further development of the embodiment according to Figures 11 and 12,

Fig. 14 is a section along the line G-G in Fig. 13,

Fig. 15 a partial view of the pile with a single hook

and an open chicane,

Fig. 16 a section along the line H-H in Fig. 15,

Fig. 17 a partial view of the pile with a combined

Single hook and a closed, offset chicane, left with sliding surface, right with counter hook and

Fig. 18 is a section along the line K-K in Fig. 17.

The post 1 shown in Figures 1 and 2 has an approximately U-shaped profile with lateral legs 2, with double hooks 4 being formed in these legs 2 by punching and subsequent profiling, e.g. as a V- or U-shaped formation 20. This hook shape is found in particular in the lower area of such a post 1 in the function of storing the binding wire. The hook has a free space 8 with a large internal volume, with this hook shape and a correspondingly large wire insertion opening 10, the hook has a stiffened tongue 7 and cannot be slammed shut by harvesting machines.

Starting from the base 14, the hook has an oblique contact edge 15 which is directed outwards, i.e. towards the outer edge of the pile 1. The angle a between the oblique contact edge 15 and the outside of the pile 1 is greater than the static friction angle of the wire 9 when it is pulled outwards.

Starting from the upper hook part 22, the hook has a slanting contact edge 21 which is directed outwards, i.e. towards the outer edge of the pile 1. The gap between the slanting contact edge 21 and the

The angle a' present on the outside of the pile 1 is greater than the static friction angle of the wire 9 when the latter is pulled outwards. This means that the tension wire 9 can be removed particularly easily, either manually or mechanically, regardless of whether it is in a lower or upper layer.

The angles a and a' can be chosen unequal to define a preferred direction for the release of the wire 9.

The embodiment shown in Figures 3 and 4 represents a modification of the embodiment according to Figures 1 and 2, namely the hook formation on a post 1 with an internal single hook 3, wherein, similar to Figures 5 to 17, an upper exit edge 21 runs to the wire insertion opening 10, which is inclined at an angle b to the vertical 19 on the post axis 11. The angle b should be greater than the static friction angle, i.e. approximately > 15°, if the wire 9 is to release itself with a pulling force upwards.

A lower exit edge 15, which is inclined at an angle a to the pile axis 11, also runs to the wire insertion opening 10. The angle should be larger than the static friction angle, approximately > 15°, if the wire 9 is to release itself with an outward pulling force.

For the machine removal, it is sufficient if the angle b is larger than the static friction angle, since the machine removes the wire 9 upwards and/or outwards. The angle a can then be equal to 0. With this design of the hook, a

large free internal volume so that the wires 9 do not become jammed or jammed in the profile if the post 1 is twisted or tilted. The hook is stiffened so that it cannot be slammed shut by a harvester.

In the embodiment shown in Figures 5 and 6, the contact edge 15 forms an angle a of approximately 90° with the post axis 11. A wire pair consists of two parallel tension wires 9 and is clamped together mechanically or manually in front of and behind the post 1, so that the tension wires 9 are always pulled towards each other, i.e. into the hook notch towards the base 14. If the wire pair is clamped above the hook, it slides down into the hook and is held in the notches on both sides by the clamp tension. A large angle b ensures secure locking even in the event of a rapid sliding movement. The basic function is also guaranteed when a hook notch is attached on one side. The hook notch can also be made smaller in scale and then no longer touches the side legs 2 in the hook base 14. The post 1 thus gains stability.

For a firm locking, the angle a is selected between 15° and 90°. If the wire pair is to be pulled further downwards or released downwards, an angle a greater than 90° must be selected. The locking force is provided by the clamping of the wire pair. For mechanical removal, an angle b greater than the static friction angle is sufficient, whereby a large angle b and a large opening 10 make it easier to lock the wire pair into place. The hook is designed so that

stiffened so that it cannot be slammed shut by a harvester.

In the embodiment according to Figures 7 and 8, a single hook 3 is located in the area of the legs 2 of the profile on approximately V- or U-shaped formations 20. A thickened hook 13 is provided, which is arranged on a long tongue 6 and which has a double-wedge-shaped nose 18 towards the wire insertion opening 10 and thus has a clip function for the tension wire 9. To fix the wire, the hook 13 can be hammered into the punched hole in the profile; the tongue 6 has a long and large striking surface. Starting from the hook attachment 17, the large leg length of the tongue 6 means that only a small amount of plastic deformation occurs when the hook 3 is opened and closed. To make it easier to insert the wire 9, the nose 13 of the hook is rounded along an outer edge 16. The upper exit edge 21 is inclined outwards at an angle b greater than the static friction angle. The strong stiffening of the hook attachment 17 ensures a free space 8 for the wire 9 that is protected against slamming.

The large remaining open internal volume of the free space 8 provides good accessibility for tools, e.g. screwdrivers, so that the hook 3 can also be easily opened again.

For the mechanical removal of the wire upwards, the angle b is larger than the static friction angle.

In the further embodiment according to Figures 9 and 10, such a single hook 3 is also located in the area of the legs 2 of the

Profiles as approximately V- or U-shaped formations 20. A thickened back hook 12 is provided, which is arranged on a long tongue 5, as in Figure 7, and which has a hook-shaped nose 12 for the wire 9 towards the wire insertion opening 10. To fix the wire, the back hook 12 can be hammered into the punch hole in the profile 1. When forces are applied to the wire outwards and upwards, the wire 9 catches in the back hook 12, so that there is a reinforced holding function here. The upper exit edge 21 is inclined with an exit angle b greater than the static friction angle, so that a wire can be released along the inner edge with an upward force.

In the embodiment shown in Figures 11-12 on a single hook 3, the slanted contact edges or sliding surfaces are designed asymmetrically, i.e. starting from the approximately V- or U-shaped formation 20 on the lateral legs 2 of the pile 1, the front sliding surface 15 is slightly more inclined, while the rear sliding surface 15' is arranged more steeply. The hook design thus represents a chicane 23 when introducing the tension wire 9, whereby a large mouth opening 10 and large angles b, b' are required for the

Contact edges 15, 15' and 21, 21' allow the wire 9 to slide in. The inwardly directed, sloping outer contact edge 15 ensures that a wire 9 placed on the outside initially catches securely there before it is then pressed in mechanically or manually. The wire 9 is fixed in place by the strong overlap of the chicane 23 and by the angle of friction in the inner area being below the limit. The wire can also be used for storage or supported by cantilevers or stitching wire springs.

remain entirely in the open mouth, which makes removal much easier.

The embodiment of the chicane shown is also suitable for fixing booms, in particular if the formation 20 is not attached centrally on the pile 1, but close to the pile back. The wire can then perform the horizontal evasive movement of the wire caused by passing through the chicane behind the pile back without deformation.

To fix the wire 9, it is advantageous to move the mouth of the chicane 23 into the lower hook eyelet with the hook in the upright position (Fig. 11) by means of the long sliding surfaces 15, 15' or 21, 2' of the mouth opening 10 from the middle of the lower hook eyelet inwards towards the middle of the post. The vegetation enclosed by the wires 9 normally causes a constant pressure outwards, so that the chicane 23 is then relieved and does not come into contact with the enclosed wire 9. This reduces the wear of the chicane 23 and the wire 9 and also the risk that the wire should jump out of the chicane 23 due to some accident.

In the embodiment according to Figures 13 and 14, which show a similar arrangement to the previously described embodiment, the opening 10 of the hook 3 is turned slightly to the side and the overlap of the chicane 23 has also been reduced. The rotation results in a more straight-line insertion and removal and the direction of movement does not have to be diverted via two sliding surfaces, but one sliding surface 15 is sufficient.

By reducing the coverage of the chicane 23 and by exceeding the static friction angle in the inner area with respect to a pull-out force obliquely outwards and upwards, the wire 9 can also be removed again with medium force.

In the further embodiment according to Figures 15 and 16, the chicane 23 is designed to be open and has strong inner sliding surfaces 15, 15' for mechanical insertion and removal. The direction of actuation can be upwards and diagonally outwards.

Compared to Figure 11, Figures 13 and 15 show a hook arrangement that is turned outwards, with a rotation of approximately 30°. The slightly inclined arrangement also retains a large insertion opening 10 with long, smooth sliding surfaces 15 and 21, which enable the chicane 23 to be smoothly overcome for inserting and removing the wire 9 without changing the direction of the force. If the hook arrangement according to Figure 11 is rotated beyond 60°, the sliding surfaces 15 become too short to enable smooth transitions due to the limited depth of the hook profile.

Furthermore, the evasive movement of the wire 9 when passing through the chicane 23 takes place in a transverse direction (horizontal) with an approximately stationary hook arrangement, so that a terrain-dependent vertical gradient of the wire, e.g. on slopes or in depressions in the ground, does not have a great influence.

However, when the hook arrangement is horizontal (rotation of the hook arrangement according to Figure 11 by 90°), the evasive movement of the wire 9 takes place

in the vertical direction, so that a wire pitch determined by the slope has an extreme influence.

The chicanes 23 generally have the problem that the way they work, particularly with the desired low back-blocking effect according to Figure 15, depends very strongly on the diameter of the wire. Stainless steel wires with a diameter of 1 mm are sometimes used, but normal wires or plastic-coated wires with a diameter of up to 3 mm are also used. Accordingly, thin wires come off easily, thick wires come off with difficulty. There is also the problem that the hooks in Figures 11 to 18 can practically not be slammed shut due to the high stiffening in the outward direction to fix the wires.

In order to give the user the option of individually adjusting the chicane function, the long sliding surfaces 15 and 21 can be bent towards each other in the area of the chicane 23 using pliers, which completely closes the chicane 23 when the two sliding surfaces 15, 21 touch in the middle. A motor-driven special tool can be offered for this purpose, with which the feed can be adjusted.

The problem with the different methods of training grapevines is that in one application a hook position is required to fix the wire 9, while in another application the same hook position is required to make it easy to lay the wire 9 in and out. Consequently, a separate post 1 with its own hook arrangement would have to be produced for each winegrower.

The embodiment shown in Figures 17 and 18 shows a combined hook in which the jaw opening 10 is designed as a separate hook 24 and is separated from a lower part by a chicane 23, as shown in Figures 11-16. It is advantageous to provide the chicane 23 with a shoulder 25 so that the wire 9 has a defined, flat support surface and does not become jammed by a wedge-shaped geometry.

Figure 17 shows on the left side an upper hook according to Figure 3, which is designed for mechanical loading and unloading.

On the right side in Figure 17 an upper hook is shown which is provided with a nose via a short, harvester-proof tongue 26 which has a counter hook, similar to the embodiments according to Figures 7 and 9. The wire 9 can be ejected by hand.

The lower part of the hook 3 is for fixing the wire 9 by means of the chicane 23.

With the combination hook, the upper hook 24 can be designed for optimal loading and unloading, while the lower hook is used to fix the wire 9. The two support points of the wire of the two hooks have only a small height offset. The post 1 is only slightly weakened by the short design of the combination hook.

The same function can also be achieved with two separate hooks 3 arranged directly above one another and only 1 to 2 cm apart, e.g. a hook according to Figure 11 above a hook according to Figure 3. The hook according to Figure 11 is designed to fix the wire 9, the hook according to Figure 3 for easy loading and unloading.

Claims (14)

1. Post ( 1 ) made of sheet steel for wire frames in wine or fruit growing, with a base profile, for example in the form of a U, V, S, Z, square, round tube, diamond shape, open diamond shape, oval, open oval and internal single or double hooks ( 3 , 4 ) arranged on the legs ( 2 ) of the base profile, which are formed by punching out tongues ( 5 , 6 , 7 ) from the sheet steel, wherein a wire insertion opening ( 10 ) and a free space ( 8 ) for the tension wire ( 9 ) are formed, characterized in that the hook ( 3 , 4 ) has a wide insertion opening ( 10 ) and has large sliding surfaces ( 15 , 21 ) integrated into the hooks ( 3 , 4 ), wherein the angle (a, b) between the sliding surfaces ( 15 , 21 ) and the Pile axis ( 11 ) or the perpendicular ( 19 ) to the pile axis ( 11 ) is greater than the static friction angle of approximately 15° occurring between wire ( 9 ) and hook ( 3 , 4 ) with a tensile force direction outwards and/or upwards. 2. Pile according to claim 1, characterized in that the sliding surfaces ( 15 , 21 ) are curved. 3. Pile according to claim 1 or 2, characterized in that in the case of a single hook ( 3 ) open at the top, the upper contact edge ( 21 ) has an angle (b) to the perpendicular to the pile axis ( 11 ) which is greater than the static friction angle with respect to the direction of the tensile force upwards. 4. Pile according to claim 1 or 2, characterized in that in a double hook ( 4 ) both exit edges ( 15 ) have an angle (a) to the pile axis ( 11 ) which is larger than the static friction angle with respect to an outward tensile force direction. 5. Pile according to claim 1 or 2, characterized in that in the case of a single hook ( 4 ) the angle (a) of the contact edge ( 15 ) to the pile axis ( 11 ) is selected in a range between greater than the static friction angle and greater than 90°. 6. Post according to one of claims 1 to 5, characterized in that the hook ( 3 , 4 ) has an elongated tongue ( 5 , 6 ) extending parallel to the post axis ( 11 ), bendable in the hook attachment ( 17 ) and merging into a thickened nose ( 12 , 13 ) at the wire insertion opening ( 10 ). 7. Post according to claim 6, characterized in that the nose ( 12 ) has a rounded outer edge ( 16 ). 8. Post according to one of claims 1 to 7, characterized in that the thickened nose ( 13 ) is designed in the form of a back hook. 9. Post according to one of claims 1 to 8, characterized in that the thickened nose ( 13 ) has a double wedge shape ( 18 ). 10. Post according to one of claims 1 to 9, characterized in that standing hooks or hooks inclined by a maximum of 60° ( 3 ) are provided on lateral U- or V-shaped formations ( 20 ) of the legs ( 2 ) of the post ( 1 ), wherein the inclined sliding surface on the formation ( 20 ) has an asymmetrical arrangement of sliding surfaces ( 15 , 15 ', 21 , 21 ') to form a chicane. 11. Post according to one of claims 1 to 10, characterized in that the mouth opening ( 10 ) of the chicane ( 23 ) is designed as a further hook ( 24 ). 12. Post according to claim 11, characterized in that the mouth opening ( 10 ) is designed as a single hook ( 24 ) with an elongated short tongue running parallel to the post axis ( 11 ), which is not bendable in the hook attachment ( 17 ) and which has a thickened nose towards the wire insertion opening ( 10 ), for example in the form of a double wedge ( 18 ) or a back hook ( 13 ). 13. Post according to one of claims 1 to 12, characterized in that for fixing the wire ( 9 ) the mouth of the chicane ( 23 ) in the lower hook eyelet is moved inwards from the center of the lower hook eyelet towards the center of the post when the hooks are standing by means of the long sliding surfaces ( 15 , 15 ', 21 , 21 ') of the mouth opening ( 10 ). 14. Post according to one of claims 1 to 13, characterized in that two hooks of different design and function are provided at a short distance and one above the other as a double hook.