WO2005086991A1

WO2005086991A1 - Head reinforcement for a vineyard stake

Info

Publication number: WO2005086991A1
Application number: PCT/EP2005/002231
Authority: WO
Inventors: Raimund Reisacher
Original assignee: Raimund Reisacher
Priority date: 2004-03-16
Filing date: 2005-03-03
Publication date: 2005-09-22
Also published as: DE102004023687A1

Abstract

A stake consisting of at least one hook (9) for holding a wire used in wine growing or fruit farming, comprising a base body (2) which is made of sheet metal and provided with a leg-sided end which can be inserted into the soil and a head-sided free end upon which the hook (9) is arranged. The base body comprises a front surface (3) and at least one limb surface (5a, 5b) which is adjacent thereto. A flat or bead-type shape (7, 107, 107a, 207, 307), which extends from the end of the head-sided end in the direction of the leg-sided end, is provided in the base body (2). The invention is characterized in that the flat or bead-type shape defines a surface arising from the edge of the head-sided end, which terminates in the area of the head-sided end.

Description

HEAD REINFORCEMENT FOR A VINEYARD PILE The invention relates to a post for holding a wire in viticulture and fruit growing with a base body made of sheet metal and at least one hook arranged thereon, according to the preamble of claim 1.

Such a pile, which consists of a U-shaped profile made of sheet steel with punched hooks arranged on the legs of the profile, is known for example from DE 44 36 936 AI.

Furthermore, DE-A-19749236 discloses a vineyard pile with an open cross-sectional profile with a total of nine beads which extend over the entire length of the pile, a hole being made in the pile head in the area of a central bead on the front is through which a plug inserted from above into the open pile profile can be fixed to the pile profile by inserting a screwdriver or the like, around the pile via a projection arranged at the opposite end, which extends in the form of a pin towards the rear out of the pile profile and has a hanging hole to pull it up out of the ground. The one described. Due to the large number of beads, pile is comparatively complex to manufacture and also requires a large amount of material, which leads to high production costs. In addition, pulling out the pile is comparatively complex and requires an additional step, since not only does the plug have to be inserted into the pile head, but at the same time the height of the front hole in the pile profile has to be brought into line by moving the plug with the hole in the plug to insert the screwdriver without any problems.

In the case of steel sheet piles in particular, it has proven useful to provide the base bodies of the piles with a preferably circular recess in the end region in order to pass a tension wire through the recess or to fasten a tension element in the recess for mechanically pulling the pile out of the ground. On Mechanical pulling out of the pile takes place here with a device provided with a pulling element, which is fastened, for example, to a boom of an agricultural vehicle, and pulls the pile out of the ground with an upward pulling force.

The problem with the piles described is that the profile cross-sectional area, in particular in the area of the pile end, is reduced both by the recesses and by the punched holes in the punched-out hooks, as a result of which the rigidity under a load with a normal compressive force in the end area of the pile reduced. The stake is usually set using a hammer and one

Impact power of, for example, 5 KN with two to three blows driven into the ground approx. 60 to 90 cm, whereby stability problems in the end area of the pile, particularly when using base bodies made of thin-walled hollow profiles, can occur, which in particular in the case of thin piles, result in these bend in the head area depending on the direction of impact.

The invention has for its object to provide a pile that can be driven into the ground without deformation despite existing cross-sectional weaknesses at the pile end.

This object is achieved according to the invention by the features of claim 1.

Further features of the invention are contained in the subclaims.

According to the invention, a pile according to the invention has a base body made of sheet metal with a foot-side end which can be inserted into the ground and a head-side free end, at least one hook for holding a wire being arranged on the base body. In the area of the front end, according to the invention, a flat or bead-shaped configuration preferably extends essentially parallel to the longitudinal axis of the base body in the direction of the foot end. According to the invention, the flat or bead-shaped recess defines a surface that ends or ends in the region of the head end. The through the flat or bead-shaped The defined area can extend from the edge of the head-side end of the pile, which serves as a drive-in surface for a drive-in tool, to about 20-30 cm or less to the foot-side end of the base body.

A particularly circular recess is provided in the end face at the head end of the base body, which is preferably a punched hole and to which a pulling element for pulling the pile out of the ground can advantageously be fastened.

According to the invention, there is a flat or beaded shape on the base body in the region of this recess, the edges of which extend from the head end of the base body down to the recess.

As the applicant has found, such a flat or bead-like design of the base body increases its resistance to plastic deformation in the region of the head end. This effectively prevents damage to the pile, which can be observed due to the weakening of the profile cross section through the recess serving as a pull-out hole and the punched holes for the hooks in the head region.

In the manufacture of the pile, the formation is shaped out of the material of the base body, for example by cold forming with the aid of known stamping tools, so that no additional material is required for the manufacture of the piles according to the invention. As a result, the additional stability of the piles according to the invention can be advantageously achieved without additional material for stiffening elements and with simple means.

Further embodiments of the flat or bead-like shape provide that the edge extends, for example, at least 20 mm beyond the lower end of the recess in the direction of the foot-side end, the edge running at least in sections parallel to a longitudinal outer edge of the base body, and the formation is introduced into the end face of the base body. Below the end-face recess, the edge can furthermore advantageously be guided continuously around the recess along a closed line and in this case preferably delimits a V-shaped or U-shaped surface of the formation.

This advantageously improves the flow of force in the transition area between the shape and the non-shaped remaining area of the base body when the base body is subjected to a normal compressive force in the longitudinal direction of the pile, as occurs, for example, when the pile is driven in, and the damaging influence of Stress peaks in the corners and edges of the base body avoided.

In the cases shown, the shape can either protrude from the base body or be inserted recessed into the base body.

According to a further embodiment of the invention, the formation is alternatively or additionally configured as a first bead-shaped formation introduced into the legs of the base body, the edges of which extend from the head-side end of the base body down to at least the first hook, the edges of the formation preferably being parallel run to the longitudinal axis of the base body.

In a similar way to the formation in the region of the end face, the first bead-shaped formation in the leg of the base body is formed from its material, for example by cold forming with the aid of known stamping tools, so that no additional material is required to improve the stability of the base body and the first bead-shaped formation can be produced using simple means.

Advantageously, the first bead-shaped formation is also introduced as a concave depression in the metal sheet, the depth of which is preferably in the range from 1 to 2.5 times the material thickness of the metal sheet. The advantage resulting from the first bead-shaped formation is that the reduced stability due to the weakened profile cross-section in the region of the first punched-out hook seen from the head-side edge of the base body is increased by the first bead-shaped formation in the leg, and the base body in particular when Introduction of the same into the soil by impacting on its head end not changed in cross-sectional shape.

Furthermore, owing to the improved stability of the base body in the region of the first head-side hook, its distance from the head-side edge of the base body can advantageously be reduced compared to a base body without a bead-like shape, so that the full length of the base body for fastening in viticulture or fruit growing can be used by tensioning or stitching wires, which leads to a considerable saving in material and associated cost savings.

In order to increase the stability of the main body not only in the area of the punching out of the hook but also below it and to avoid kinking when the same is introduced, in a further preferred embodiment the first bead-shaped formation extends past the hook and runs out below the hook.

In addition, it can be provided that a second bead-shaped formation is provided above the hook, the longitudinal axis of the base body being arranged at an angle of less than or equal to 90 °, in particular 45 °, and preferably away from the longitudinal axis of the second bead-shaped formation Center of the leg, for example from the center line of the leg surface, towards the front side of the base body.

In a further embodiment, a third bead-shaped formation is additionally arranged below the hook, the longitudinal axis of which forms an angle of less than or equal to 90 °, in particular 45 °, to the longitudinal axis of the base body.

In the same way as the second bead-shaped formation, the third bead-shaped formation extends from the center of the leg in the direction of the end face of the Base body, the second and / or the third bead-shaped formation preferably extending over the width of the hook in the manner according to the invention.

The first, second and third corrugated shape advantageously increase the moment of inertia in the area of the head end of the base body, so that the base body can be driven into the ground without damaging deformation by striking the head end, even if it is an impact tool is hit off-center in the head area.

In order to produce the second and third bead-shaped form using only one embossing tool with simple means, the second and third bead-shaped form have the same length and run essentially parallel to one another.

The first, the second and the third bead-shaped form are preferably guided around the hook arranged in the head area as a continuous and coherent form, so that on the one hand the distribution of the normal and shear stresses and thus the force flow in the area of the hook when the base body is driven in is improved is, the edge of the first, second and third bead-shaped formation has a minimum in relation to the shaped surface and, on the other hand, the bead-shaped formations can be produced in a simple manner with only one embossing tool.

A further advantageous embodiment provides that the second and / or third beaded shape extends up to the end face of the base body, with a width of the first and / or second and / or third beaded shape in this and the previously described embodiments Range between 1 and 5 mm, in particular of 2 mm, has been found to be particularly advantageous.

In order to exclude on the one hand a kick in the direction of the end face and in the direction of the legs and on the other hand also cross-sectional deformations in the area of the recess and the hook, in a further advantageous embodiment of the ß pile a formation is provided both in the end face and in the legs of the base body.

The invention is described below with reference to the drawing based on preferred embodiments.

The drawings show:

1 shows a schematic representation of the pile according to the invention with a flat shape in the end face,

2 is a plan view of the pile according to the invention from FIG. 1,

3 shows a schematic spatial representation of a pile according to the invention, in which the formation is provided in the manner of a bead in the end face,

4 shows a pile according to the invention in a side view with a first bead-shaped formation in the leg surface,

5a a pile according to the invention in a top view with a flat shape in the end face and convexly shaped first bead-shaped shapes in the leg surfaces,

5b shows a pile according to the invention in a plan view with a flat shape in the end face and convexly shaped first bead-shaped shapes in the leg surfaces,

6 shows a pile according to the invention in a side view with a connected first, second and third bead-shaped formation in the leg surface, 7a a pile according to the invention in a top view with a flat shape in the end face and convexly shaped first, second and third bead-shaped shapes in the leg surfaces,

7b shows a pile according to the invention in a top view with a flat shape in the end face and concavely shaped first, second and third bead-shaped shapes in the leg surfaces,

8 shows a pile according to the invention in a side view with a coherent first and third bead-shaped shape, in which the third bead-shaped shape extends up to the end face of the base body,

9a shows a pile according to the invention in a plan view with a flat shape in the end face and convexly shaped first and third bead-like shapes in the leg surfaces, the third bead-shaped shapes extending up to the end face of the base body,

9b shows a pile according to the invention in a top view with a flat shape in the end face and concavely shaped first and third bead-like shapes in the leg surfaces, the third bead-like shapes extending up to the face of the base body,

10 shows a pile according to the invention in a view from the front with a shape in the end face and convexly shaped first and second bead-shaped shapes in the leg surfaces, and

11 shows a pile according to the invention in a view from the front with a shape in the end face and concave-shaped second and third bead-shaped shapes in the leg surfaces. The pile 1 shown in FIGS. 1 and 2 comprises a base body 2 with a U-shaped cross-sectional shape, which has a symmetrical end face 3 and two adjoining leg faces 5a, 5b. In the preferred embodiment of the invention, the end face 3 is essentially flat, but can also have a convex or concave curvature.

On the leg surfaces 5a, 5b there are outward hooks 9 for receiving tension wires (not shown), the hooks preferably being formed in a known manner by punching out and reshaping tongue-shaped sections from the legs of the base body 2.

As can further be seen from the figures, the base body 2 has, at the head end in the end face 3, a raised planar shape 7, preferably formed from the end face 3 toward the front of the pile 1, in the area of which a first and a further circular recess 11 , 13 are arranged. In the same way, however, there is the possibility of designing the flat shape as a recessed or recessed flat recess in the end face 3, which is preferably introduced into the base body 2 with the aid of an embossing tool.

The height or the depth of the formation 7, which according to the embodiment of the invention shown in FIG. 3 can also be introduced into the end face 3 of the base body 2 as a bead-shaped formation 107 with a width of, for example, 2 to 5 mm or more in this case preferably in the range from 1 to 2.5 times the material thickness of the metal sheet of the base body 2, which can be, for example, I to 3 mm or more. The bead or bead-shaped formation 107 can be designed in the same way as the formation 7 as a protruding area or protruding from the end face 3.

The bead-shaped formation 107 is delimited by an edge 17 which extends from the head-side end of the base body 2 in the direction of its longitudinal axis 15 parallel to the outer edges 19 of the base body 2 and below the first recess 1 1 in the manner of an "N". The same applies correspondingly to the course of the edge of the flat formation 7.

The recess 11 arranged in the area of the formation 7, preferably on the axis of symmetry thereof, has a larger diameter than the recess 13 arranged at the head end and is preferably used to fasten a pulling element for pulling out the pile. The circular recess 13, which is also arranged in the area of the formation 7, preferably on its axis of symmetry, has a smaller diameter and is preferably used to carry out a tensioning wire ⁽ not shown).

The embodiments of the pile according to the invention shown in FIGS. 4, 5a and 5b show a first bead-shaped formation 107a, which is arranged behind the hook 9 when viewed from the end face 3. Here, the first bead-shaped formation 107a extends from the head-side end of the base body 2 in the direction of the first hook 9 arranged at the head-side end of the base body 2 and runs below this hook, the edges of the first bead-shaped formation 107a extending substantially below the hook 9 run parallel to the outer edges 19 of the base body 2 and delimit the first bead-shaped configuration 107a in a U-shape below the first head-side hook 9.

The shape 7 of the end face 3 of the base body 2 can be arranged either in the form of a bead or in a planar manner from the end face 3 or set back, as shown in FIGS. 5 a and 5 b in combination with convex from the leg surfaces 5 a , 5b molded out or concavely molded into the leg surfaces 5a, 5b first bead-shaped formations 107a is possible.

In the case of a convex-shaped first bead-shaped formation 107a, there is the advantage that a tension wire inserted in the hook 9 is deflected outward in the direction of the hook bracket by the first bead-shaped formation 107a, so that the tension wire is secured against accidental removal. Furthermore, the concern of Tension wire on the first bead-shaped formation 107a reduces the contact area of the tension wire with the base body 2, which can be advantageous due to the smaller friction surface when pulling tension wires inserted into the hook 9. In contrast, the first bead-shaped formations 107a formed concavely in the leg surfaces 5a, 5b have the advantage that the tensioning wire can be removed more easily from the hook 9.

6 shows the side view of a pile according to the invention, in which a connected first, second and third bead-shaped formation 107a, 207, 307 is guided around the hook 9. As has also been shown in FIG. 4, the first bead-shaped formation 107a extends from the head-side edge of the base body 2 parallel to the pile outer edges 19 in the direction of the hook 9, during which the second bead-like shape also starting from the head-side edge of the base body 2 Formation 207 extends at an angle of approximately 45 ° in the direction of the end face 3 of the base body 2. The third bead-shaped formation 307, on the other hand, adjoins the first bead-shaped formation 107a below the hook 9 and extends essentially parallel to the second bead-shaped formation 207 in the direction of the end face 3 of the base body 2. The second and third bead-shaped formation 207, 307 run here in the area of the leg surface 5a, 5b, the edges of this shape converging in a U-shape.

6, the second and third bead-shaped shape 207, 307 preferably have the same length and the same angle to the longitudinal axis of the base body 2, the second and third bead-shaped shape 207, 307 can have both a different length and a different angle have to the longitudinal axis of the base body 2. The angle of the second and third bead-shaped formation 207, 307 to the longitudinal axis of the base body 2 is preferably less than 90 °, an angle of 45 ° having proven to be particularly advantageous.

The embodiments shown in FIGS. 7a and 7b show the base body 2 shown in side view in FIG. 6 in combination with a planar shape 7 protruding or set back from the end face 3. As shown in FIG the first, second and third bead-shaped formation 107a, 207, 307 are both formed convexly out of the leg surfaces 5a, 5b and, as shown in FIG. 7b, are concavely formed in the leg surfaces 5a, 5b.

Furthermore, the second and / or third bead-shaped formation 207, 307 can extend as far as the end face 3 of the base body 2. 8 shows a modification of the embodiment shown in FIG. 6, in which a coherent first and third bead-shaped formation 107a, 307 delimit the region of the hook 9 below it in the direction of the foot-side end of the base body 2 and when the pile 1 is hammered in enable an advantageous flow of force in the area of the hook 9 at the head end.

As in the previous embodiments, the first and third bead-shaped formations 107a, 207, 307 can be convexly shaped out of the leg surfaces 5a, 5b, as shown in FIG. 9a, and concave into the, as shown in FIG. 9b Leg surfaces 5a, 5b be molded into it. To improve the stability of the base body 2 at the head end in the region of the legs 5a, 5b and the end face 3, a combination of a first, second and third bead-shaped formation 107a, 207, 307 in the leg faces 5a, 5b with one protruding from the end face 3 or recessed flat or a not shown bead-shaped formation 7, 107 possible.

10 and FIG. 11 show a pile 1 according to the invention in a view from the front, in FIG. 10 the first, second and third bead-shaped formation 107a, 207, 307 projecting convexly from the leg surfaces 5a, 5b, meanwhile in FIG 11 the first, second and third bead-shaped formations 107a, 207, 307 are concave in the leg surfaces 5a, 5b.

Depending on the distance from the hook 9 in the longitudinal direction of the base body 2, the convex-shaped second bead-shaped formations 207 shown in FIG. 10 can also serve to secure the tension wire (not shown), whereas the concave-shaped second bead-shaped formations 207 from FIG. 11 add a tension wire do not hinder the removal from the hook 9 further. Furthermore, there is the possibility that the front-side or leg-side bead-shaped or flat formations 7, 107, 107a, 207 arise at a distance of, for example, 1 to 2 mm from the head-side edge of the base body 2 and do not emerge from the head-side edge of the base body 2 as shown extend.

LIST OF REFERENCE NUMBERS

Pile base body end face a leg face b leg face formation hook1 first recess3 second recess5 longitudinal axis7 folded edges9 outer pile edges07 bead-shaped formation07a first bead-shaped formation07 second bead-shaped formation07 third bead-shaped formation

Claims

Expectations

1. Post with at least one hook (9) for holding a wire in viticulture or fruit growing, which has a base body (2) made of sheet metal with a foot-side end that can be inserted into the ground and a head-side free end on which the hook (9 ) is arranged, wherein the base body comprises an end face (3) and at least one adjoining leg surface (5a, 5b), and wherein in the base body (2) a flat or bead-shaped extending from the edge of the head end towards the foot end Forming (7, 107, 107a, 207, 307) is provided, characterized in that the flat or bead-shaped form defines a surface which arises at the edge of the head end and which ends in the region of the head end.

2. Pile according to claim 1, characterized in that in the end face (3) of the base body (2) has a recess (11) for pulling the pile (1) out of the ground, and that the formation (7, 107) extends down to the recess (11).

3. Post according to claim 2, characterized in that the edge (17) of the formation (7, 107) extends beyond the recess (11) towards the foot-side end of the base body (1).

4. Pile according to claim 2 or 3, characterized in that the edge (17) of the formation (7, 107) is guided along a substantially closed line around the recess (11).

5. Pile according to claim 4, characterized in that the edge (17) of the formation (7, 107) in the region of the recess (11) delimits a V-shaped or U-shaped surface.

6. Pile according to one of the preceding claims, characterized in that the shape (7,107) protrudes from the base body (2).

7. Post according to claim 1, characterized in that the formation (7, 107) is provided as a first bead-shaped formation (107a) in the leg surface (5a, 5b) of the base body (2), and extends from the edge of the head-side end to at least extends down to the first hook (9).

8. Post according to claim 7, characterized in that the first bead-shaped formation (107a) as a concave with respect to the outer surface of the base body (2) is introduced into the metal sheet of the base body (2).

9. Post according to one of claims 7 or 8, characterized in that the first bead-shaped formation (107a) has a depth which is in the range of 1 to 2.5 times the material thickness of the metal sheet of the base body (2).

10. Post according to one of claims 7 to 9, characterized in that the first bead-shaped formation (107a) extends past the hook (9) and runs out below the hook (9).

11. Pile according to one of claims 7 to 10, characterized in that in the head region of the pile (1) above the hook (9) a second bead-shaped formation (207) is provided which is at an angle with the longitudinal axis of the pile (1) less than or equal to 90 °, in particular less than or equal to 45 °.

12. Post according to claim 11, characterized in that the second bead-shaped formation (207) extends approximately from the center of the leg surface (5a, 5b) towards the end face (3) of the base body (2).

13. Pile according to one of claims 7 to 12, characterized in that a third bead-shaped formation (307) is provided in the head region below the hook (9), which has an angle of less than or equal to 90 ° with the longitudinal axis of the pile (1), especially less than or equal to 45 °.

14. Pile according to one of claims 11 to 13, characterized in that the second bead-shaped shape and / or the third bead-shaped shape (207, 307) extend across the width of the hook (9).

15. Pile according to one of claims 11 and 13, characterized in that the second bead-shaped formation (207) runs substantially parallel to the third bead-shaped formation (307) and has essentially the same length as the third bead-shaped formation (307).

16. Pile according to one of claims 13 to 15, characterized in that the first, second and third bead-shaped formation (107a, 207, 307) around the hooks (9) arranged in the head region are guided around as a continuous, coherent formation.

17. Post according to one of claims 11 to 16, characterized in that the second bead-shaped shape (207) and / or the third bead-shaped shape (307) extend up to the end face (3) of the basic body (2).

18. Post according to one of claims 7 to 17, characterized in that the first and / or second and / or third bead-shaped formation (107a, 207,307) have a width in the range between 1 and 5 r m, in particular 2 mm.

19. Pile according to claim 2 and 7, characterized in that a formation (7, 107, 107a, 207, 307) is provided both in the end face (3) and in the legs (5a, 5b) of the base body (2)

20. Pile according to one of the preceding claims, characterized in that the area defined by the flat or bead-like shape (7, 107, 107 °, 207, 307) from the edge of the head end a ιs less than 30 cm, in particular less than 20 cm, extends towards the foot end.