TWI422730B - Protective net, especially for rockfall protection or for verge securing, and method for producing the protective net - Google Patents

Description

Particularly suitable for fall protection and slope protection network and method of manufacturing the same Field of invention

The present invention is particularly applicable to a protective net for rock fall protection or slope fixing according to one of the main descriptions of item 1 of the scope of the patent application.

Background of the invention

A protection network of this type can be found in EP-B-0 979 329. The protective net is designed as a diagonal mattress with a diamond loop and a single spiral shaped line made of high tensile steel. The thread has a high tensile strength so that the braid retains its three-dimensional mattress-like structure even under stretch conditions and can function as a retainer or stabilizer that covers the surface of the floor as a plant layer. The wire braid can be folded during storage or shipping to take up very little space. Due to the high bending resistance of the wire, the risk of forming a step when the first line breaks is reduced.

Summary of invention

It is an object of the present invention to provide a protective net of the above type and to further improve the risk of rupture significantly.

This task is solved according to the invention by a protection network having the features described in claim 1 of the patent application.

Other preferred embodiments of the protection network of the present invention form the subject matter of the scope of the claims.

The fact that the protective net based on the present invention is woven by individual spiral bent strands, cables or wire bundles of two or more wires (or strands) preferably made of high tensile steel is produced. A protective net with a high degree of stability, which can be particularly deformed under load and does not require looping of fixing elements (such as cross-clamps).

The diagonal weave of the present invention made of strands, cables or strands can be made "infinitely", in particular on the rolls, based on which the sides of a longitudinal roll are preferably combined with strands, strands A very stable edge knot in the form of a loop formed by the end of the cable or harness.

Simple illustration

The invention will now be described in more detail with reference to the drawings in which: Fig. 1 shows a top view of a protective net of the invention; Fig. 2 shows a partial plan view of a protective net; and Fig. 3 shows a part of the net according to Fig. 1. Side view; and Figure 4 shows a schematic view of a protection net system for forming a slope on a slope.

Detailed description of the preferred embodiment

Figures 1 and 2 respectively show a protective net for fixing a surface layer such as a slope or a falling rock along a road or the like, which is presented here as if there are four corners or more The corner of the corner loop 17 is in the form of a diagonal weave 10 of the square. The diagonal weave 10 is woven by a plurality of spirally bent strands, cables or wire harnesses 11, 12, 13, 14 each having two or more wires 22 made of high tensile steel. It may consist of a wire wound by two or more strands, or a wire wound by two or more strands, or a strand of a cable, or a combination of these elements.

The wire has a nominal strength of between 100 and 2200 Newtons per square inch according to DIN standard 2078, such as 1770 Newtons per square inch. However, it is also possible to use spring wire steel according to DIN standard 17223. The thickness of the wire will depend on the desired tensile strength and may be, for example, 3 mm.

These wires 22 are typically galvanized and equipped with a zinc/aluminum coating and/or a plastic coating or a chrome alloy to provide the desired corrosion resistance. Thus, for example, it is conceivable to use a zinc coating having an area weight of from 100 to 250 g/m 2 .

On the side ends of the braid 10, the strands, that is, the cables, that is, the strands 11, 12, 13, 14 are flexibly connected to each other via the loops 11", 12", so that the loops 11" 12" is formed by the strands bent at its ends, that is, the cables, that is, the harnesses 11, 12, 13, 14 themselves. The strands, that is to say the cables, ie the strands 11, 12, 13, 14 are preferably additionally provided with a number of loops 19 which are wound along their outer circumference after being bent to form a loop, which will guarantee It has sufficient safety against opening due to the tensile load applied to these loops under tension conditions.

The diagonal weave 10 is held on the ground surface by a defined tensile force by the mating elements 15 that sink into the ground. The spirally bent edge cables located at the upper and lower ends of the braid 10, i.e., the edge strands, i.e., the strands or strands 21 of the edge strands 11, are preferably inserted back therein, which are pulled by the mating elements 15 Live the floor or the like. In principle, the mating element 15 can also directly hold the loop 11'.

The individual spiral bent strands, cables, or harnesses 11, 12, 13, 14 have a tilt angle α and a length L between the two bends to determine the form of the loop 17 of the diagonal braid 10 and size. If you choose about 20 to 35. The angle value is also advantageous for the tilt angle α. The individual loops 17 each form a diamond shape, so the loop width can be, for example, 77 x 143 mm. This provides the advantage that the braid 10 will not stretch significantly when placed on the ground surface and pulled by the cord 21 in the longitudinal direction. In addition, the individual loops 17 form a diamond shape having an elongated opening in this manner. This has the advantage of having reduced permeability to the earth material.

The individual strands, cables or harnesses 11, 12, 13, 14 are flexibly held in their weaving condition, with the result that the diagonal weave 10 can be folded into a mat, i.e., rolled up. For this reason, only a very small space is required for storing and transporting the braid.

According to Fig. 3, the 10 series is woven and has a three-dimensional mattress-like structure made of a high tensile steel wire. The individual strands, cables, or harnesses 11, 12, 13, 14 are spiral-shaped based on this use and are bent and then woven together, so that the resulting braid 10 is formed in a cross-sectional view. Near the outer circumference of the rectangle. The strands, cables or harnesses are thus composed of a bent section 11 and a straight section 91. The elongate rectangle has a thickness 10' of a plurality of cables, that is, a strand thickness. This means that the wire weave 10 is still three-dimensional even in a pretensioned condition. For example, since the strands, cables or wire harness can be stretched in the longitudinal direction with increased tensile force and provide increased elasticity for this mesh weave, this will result in increased springability of the weave. On the other hand, this three-dimensional design provides additional support or stability of the plant layer covered by this weave or surface finish coating such as a slope.

The protective net according to the present invention is made of two or more wires made of high tensile steel for transforming a strand or a bundle, or two or more made of high tensile steel for transforming to form a cable. The fact that individual spiral strands, cables or wire bundles of more strands are woven is representative of a very stable deformation under load and that does not require looping of fixed components (such as cross-clamps). Protection network.

The diagonal weave of the present invention made from strands, cables or wire harnesses can be produced "infinitely" on the roll, so that the longitudinal roll side is preferably tied back by the ends of the strands, cables or harnesses. A very solid edge knot in the form of a circle.

Basically, however, the protective mesh may also consist of strands, strands, spiral cables having thinner or thicker wires that are not made of high tensile steel or partially of high tensile steel.

Figure 4 shows a protective mesh system (weaving 10) according to the present invention, which is used here, for example, for the side slopes 40 of a side slope 45 formed on a steep slope forming a surface layer of the fixed surface.

The slope fixing 40 series is braided 10 by a line configured to span a desired slope area and a mating component 15 (i.e., a claw plate or the like) that is sunk into the ground to secure the braid 10 to the ground surface (i.e., a claw plate or the like) ) composed of. For the mating component 15, a known ground or rock nail is required, which is preferably attached to the slope 45 at regular intervals. At the upper and lower ends of the braid 10, it is conceivable to provide a cord 21 by which the braid 10 is stretched or stretched.

By means of this protection network system, a slope can be optimally fixed. The mesh design of the present invention can also be absorbed by stones or rocks that fall into the slope. The big forward force is no problem.

By means of a method for producing a protective net (weave 10) according to one of the inventions, a strand, a strand, a cable 11, 12, 13, 14 or a strand, at a defined angle of inclination α, during a first step The analog is introduced at least into one of the devices, not shown in detail here, and is bent about 180° along the lance by a defined length L. During a further step, the strands, strands, cables 11, 12, 13, 14 or the like are advanced a defined length L relative to the lance along its longitudinal axis several times and bent about 180 per lance. ° Until this strand, harness, cable 11, 12, 13, 14, or the like takes a spiral form. These spiral bent strands, strands, cables 11, 12, 13, 14, or the like, once formed, are woven together with a second spiral bent strand, wire harness, cable or the like, and then The two are woven with the third party and repeat this effect until the wire weave has reached the required size.

It is preferred for these strands, strands or cables to at least partially use high tensile strength. However, it is also possible to use a line with a lower degree of stability. The overall stability is increased due to the fact that thicker wire harnesses can be used instead of individual wires.

10‧‧‧(diagonal) weaving

10'‧‧‧ thickness

11,12,13,14‧‧‧Spiral bent strands, cables or harnesses

11’‧‧‧Bend section

11", 12", 19‧‧ ‧ loop

15‧‧‧Matching components

17‧‧‧ Loop

21‧‧‧rope

22‧‧‧ line

40‧‧‧Slope fixation

45‧‧‧Slope

91‧‧‧ Straight line segment

L‧‧‧ length

‧‧‧‧Tilt angle

1 is a plan view showing a protective net of the present invention; FIG. 2 is a partial plan view showing a protective net; FIG. 3 is a partial side view of the net according to FIG. 1; A schematic diagram of a protective net system that forms a slope.

11,12. . . Spiral bent strands, cables or harnesses

11", 12", 19. . . Loop

15. . . Mating component

twenty two. . . line

Claims (12)

A protective net particularly suitable for falling rock protection or slope fixing, which is formed by a diagonal weave which is produced from a wire and forms a three-dimensional mattress structure, characterized in that the diagonal weave is composed of Two or more strands or strands of wire or wire strands made of steel are woven; whereby each of the strands, strands or cables of the diagonal weave is spirally curved Folded and formed by straight segments and bent segments; whereby in each of the straight segments, the wires of the strands or harness, or the strands of the cables are regularly in each other Winding; and thereby, in each of the bends, the strands of the strands or strands, or the strands of the strands are only partially wound, not regularly Winding around each other. A protective net according to claim 1, wherein in each of the bent segments, the wires of the strands or harnesses, or the strands of the cables are almost each other Configured in parallel. The protective net of claim 1, wherein in each of the bending segments, the wires of the strands or harnesses, or the strands of the cables are at least The parts are spaced apart from each other. A protective net as claimed in claim 1 is characterized in that the strands, cables or wire bundles or the like are at least partially made of high tensile steel. A protective net as claimed in claim 1, 2, 3 or 4, characterized in that the strands, cables or strands are flexibly connected to each other in pairs at their ends via a loop. Such as the protection network of claim 5, which is characterized by the equities The cable or harness is additionally provided with at least one loop wound along its outer circumference after it is bent into a loop. A protective net as claimed in claim 1, 2, 3 or 4, characterized in that the wire used to form the strands, cables or strands is corrosion resistant. A protective net as claimed in claim 1, 2, 3 or 4, characterized in that the wire used to form the strands, cables or wire harness has a marking in the range of 1000 to 2200 Newtons per square millimeter. Weigh the strength. A protective net as claimed in claim 1, 2, 3 or 4, characterized in that the spirally bent strands, cables or wire harnesses for forming the diagonal weave are preferably located between 25° and 35°. A tilt angle α. A protective net as claimed in claim 1, 2, 3 or 4, characterized in that the side slope is fixed and has the diagonal weave, which can be sunk into the ground by a claw plate or the like to hold the weave to the ground surface. a mating component, and at least one cord that is held on the surface and that stretches the braid. A protective net for producing a protective net, the protective net is a protective net according to any one of the preceding claims, wherein a strand, a strand, a cable or the like is A defined angle of inclination α is introduced into at least one of the lances of a device and bent about 180° along the lance by a defined length L, and characterized in that the strand, the wire harness, the cable or the like is relative to The lance advances the defined length L several times along its longitudinal axis and is bent 180 along the lance each time. Until this strand, harness, cable or the like has taken a spiral form. The method of claim 11, characterized in that a spiral bent strand, a bundle, a cable or the like and a second spiral bend The strands, a bundle of wires, a cable or the like are woven together, the second is woven with a third party and the effect is repeated until the diagonal weave has reached the desired size.