Protective net, in particular for protection against fall or for slope reinforcement and method of its manufacturing

FIELD: agriculture.

SUBSTANCE: invention is related to protective nets, intended for reinforcement of slope against fall, and to methods of their manufacturing. Net is made with diagonal plaiting and is woven of twisted wire strands bent in the shape of spirals, armature bundles or cords, which comprises two or more wires or twisted wire strands of steel. Method for manufacturing of protective net consists in the fact that twisted wire strand, cord or armature bundle is fed with a certain angle of lift at least to one bending mandrel of device and is bent at a certain length around bending mandrel approximately by 180°, then repeatedly moved along their longitudinal axis to bending mandrel at a certain length, bent accordingly around bending mandrel by 180° until this twisted wire strand, cord or armature bundle does not achieve shape of spiral, besides wire strand bent in the form of spiral, cord or armature bundle are woven together with the second twisted wire strand, cord or armature bundle bent in the form of spiral, and this is repeated until net is made with diagonal plaiting of desired value.

EFFECT: optimal fixation of slope is achieved, as well as damage danger is reduced.

9 cl, 4 dwg

 

The invention concerns a protective network, in particular to protect from fraying or to strengthen the slope, according to the restrictive part of paragraph 1 of the claims.

The protective network of this type is disclosed in EP-B-0979329. Protective network is designed as a diagonal braid with cells in the form of a parallelogram and a three-dimensional-like mattresses structure, which is woven from a single curved in the form of a spiral wire of high strength steel. Wire have high tensile strength, so that the braid saves the specified three-dimensional structure even in the stretched condition and can serve as coverage of the earth surface as fastening or stabilizer layers of vegetation. Wire mesh can be folded and occupies a small space for storage or transportation. Due to the high tensile strength wire bending, reducing the risk of descending loops when possible broken wire.

At the heart of this invention lies task even more to improve the protective network of the type mentioned at the beginning and greatly reduce the risk of damage.

This problem is solved according to the invention, by means of a protective network with signs of paragraph 1 of the claims.

Further preferred embodiments of the respective invention protective nets form the subject hung the number of claims.

Due to the fact that the protective net according to the invention is woven from a single bent in the shape of a spiral twisted wire strands, cables or wire bundles, which contain at least two wire or twisted wire strands) mainly from high-strength steel, creates a protective network with high strength, which practically prevents any deformation under load and without fixation of cells (for example, cross-type terminals).

Corresponding to the invention diagonal weave of twisted wire strands, cables or wire bundles can be virtually "infinite" in the rolls, and on the longitudinal sides of coils mainly provided by ductile boundary nodes in the form of anchor loops formed at the ends of the twisted wire strands, cables or wire bundles.

Hereinafter the invention is explained in more detail by means of drawings, on which:

Figure 1 is a top view of the cell corresponding to the invention a protective network

Figure 2 - protection network for a partial top view,

Figure 3 is a partial side view of the protective network according to Fig 1,

4 is a schematic view of the protective system of the network as a strengthening of the slope on the slope.

Figure 1 and figure 2 show, respectively, a protective network for fixing layer of the earth's surface, as nab, the emer strengthening of the slope or protection from the crumbling cliffs near the road or the like, which is made in the form, for example, rectangular diagonal weave 10 with four or polygonal cells 17. Diagonal weave 10 woven bent in the shape of a spiral twisted wire strands, cables or reinforcing beams 11, 12, 13, 14, which contain, respectively, two or more wires 22 of high-strength steel. You may to talk about two or more wires twisted together in a twisted wire strand, two or more related in the reinforcement beam wires, twisted into a twisted rope wire strands, or combinations of these elements.

Wire, according to DIN 2078, have a nominal strength between 1000 and 2200 N/mm2for example 1770 N/mm2. Could also use a wire of spring steel according to DIN 17223. The thickness of the wire depends on the required tensile strength and may be, for example, 3 mm

These wire 22, as a rule, galvanized, supplied with a coating of zinc and aluminum and/or plastic, or from a chromium alloy, to achieve the required corrosion resistance. For this purpose, for example, provided by the galvanized coating with a surface density of between 100 and 250 g/m2.

On the lateral ends of the netting 10 twisted wire strands, or wires, or reinforcing beams 11, 12, 13, 14, pairs flexibly connected to each other ankern the mi hinges 11”, 12, with the anchor loops 11", 12" established a cap on the end of the twisted wire strands or ropes, or steel beams 11, 12, 13, 14. Twisted wire strands, or wires, or reinforcing beams 11, 12, 13, 14, after they are bent in the anchor loops, additionally supplied mainly multiple wound around their perimeter loops 19 which are due to occur in the inserted state of tensile load on these anchor loops guarantee sufficient reliability against their disclosure.

Diagonal weave 10 is held with a certain tension on the earth due to sunk into the soil of fasteners 15. Preferably located on the upper and lower end of the netting 10 curved in the form of a spiral boundary rope, or regional twisted wire strand, or respectively of the edge reinforcing beam 11 is electrically connected to one wire or cable 21, which with his hand stretched fasteners 15 on the ground or the like, In principle, the fastening elements 15 could keep and also directly anchor loops 11'.

Separate curved in the form of a spiral twisted wire strands, cables or wire bundles 11, 12, 13, 14 have an angle α of lifting, and the length L between the two curves, which is Radelet shape and size of the cells 17 diagonal weaving 10. For angle α lifting angle is preferably selected from about 20 to 35°. Individual cells 17 respectively form a parallelogram, and the cell size is, for example, 77×143 mm This gives the advantage that the netting 10 is stretched slightly when it is displayed on the surface of the earth and pre-loaded in tension from the sides 21 in its longitudinal course. In addition, individual cells 17 form thus a parallelogram with an oblong hole, which eventually gives the advantage of lower permeability earthen material.

Separate twisted wire strands, cables or wire bundles 11, 12, 13, 14 are held movably relative to each other in a woven state, which has the result that the diagonal weave 10 may be formed or, respectively, to fold the carpet. Therefore, you need minor excavated area for storage and transportation of such tangles.

According to Figure 3 weave 10 has three-dimensional-like mattresses structure, which again is ensured thanks to the use of high-strength steel wires. Separate twisted wire strands, cables or wire bundles 11, 12, 13, 14 to this end bent in the form of a spiral and then woven together so that the formed thus weave 10, if cm is the third in cross-section, forms an approximately rectangular contour. So twisted wire strands, cables or wire bundles consist of curved parts 11' and the straight parts 11. This oblong rectangle has a thickness of 10' several thicknesses of wire or twisted wire strands. However, this wire mesh 10 is made in a pre-tensioned state is three-dimensional. This causes, on the one hand, increased spring property of weaving, as twisted wire strands, cables or wire bundles can stretch while increasing the tension in their longitudinal length and attach the mesh netting increased elasticity. On the other hand, through this three-dimensional structures for covering the surface of the earth, such as slope, reach additional support or stabilization laid in this braided layers of vegetation or cut surfaces.

Due to the fact that the protective network, according to the invention, woven from a single bent in the shape of a spiral twisted wire strands, cables or wire bundles that contain two or more wires of high strength steel, woven together in a twisted wire strand or in the reinforcement beam, or formed from two or more twisted wire strands of high-tensile steel, twisted together in a rope, created vysokoprochnaja network, which practically prevents any deformation under load and without fixation of cells (for example, cross-type terminals).

Corresponding to the invention diagonal weave of twisted wire strands, cables or wire bundles can be virtually "infinite" in the rolls, and on the longitudinal sides of coils mainly provided by ductile boundary nodes in the form of anchor loops formed by the ends of the twisted wire strands, cables or wire bundles.

However, fundamentally protective network can be made of twisted wire strands, reinforcing beams stranded cables with thinner or thicker wires, which are not manufactured or partially manufactured from high-strength steel.

Figure 4 shows the system corresponding to the invention a protective network 10, which is provided as the strengthening of 40 slope, for example, located on a steep hillside slope 45, which forms a protected surface of the earth.

This strengthening of 40 slope consists of decomposed to the desired area of the slope diagonal (wire) netting 10 and embedded in the ground fastening elements 15 with clamping weave 10 to the surface of the earth capture (claw) plates or the like For fastening elements 15 are famous ground is rock Lee swing enshrined mainly at regular intervals in the slope of the 45. In the upper and lower end of the netting 10 is provided, respectively, the cable 21 through which the netting 10 is stretched by tensile forces.

Using this system, the protective network to achieve optimal fixation of the slope. At the relevant invention perform a network can easily be seen even large shearing forces that occur due to the breaking away of stones or rock fragments in the slope.

If used according to the invention method of manufacturing a protective network 10, respectively twisted wire strand, steel beam, the cable 11, 12, 13, 14 or the like, is delivered to the first stage with a certain angle α of lifting at least one bending mandrel is not shown here, the device is bent at a certain length L around the bending mandrel of approximately 180°. In the next steps, twisted wire strand, steel beam, the cable 11, 12, 13, 14, etc. is repeatedly pushed for a certain length L along its longitudinal axis by bending mandrel 66 and respectively bent around the bending mandrel 180°, until this twisted wire strand, steel beam, the cable 11, 12, 13, 14, etc. will not accept a spiral shape. After you have received such curved in the form of a spiral twisted Provo the internal strands, reinforcing beams, ropes 11, 12, 13, 14 or so, they respectively are woven together with the second curved in the form of a spiral twisted wire strand, steel beam, a cable or the like, the second with the third, and this is repeated until then, until it is made of wire mesh to the desired value.

In the strands, reinforcing beams or cables are preferably used, at least partially, high strength wire. But it could have used a wire with lower strength. Given the fact that, compared with the individual wires can be used, for example, thicker reinforcing beams, you can improve overall strength.

1. Protective network, in particular to protect from fraying or to strengthen the slope, made of wire (22) with the formation of diagonal weaving three-dimensional structure, characterized in that it is woven of twisted wire strands, cables or wire bundles(11, 12, 13, 14), which contain at least two wires (22) or twisted wire strands of steel.

2. Protective net according to claim 1, characterized in that the twisted wire strands, cables or reinforcing beams (11, 12, 13, 14) is made at least partially of a high-strength steel.

3. Protective net according to claim 1 or 2, characterized in that the twisted wire strands, cables or reinforcing beams (11, 12, 13, 14) popen is movably connected to each other at their ends with anchoring loops (11", 12").

4. Protective net according to claim 3, characterized in that the twisted wire strands, cables or reinforcing beams (11, 12, 13, 14) after the bend in the anchor loops (11", 12") is further provided with at least one wrapped around their perimeter loop (19).

5. Protective net according to claim 1, characterized in that the wire (22), forming a twisted wire strands, cables or wire bundles(11, 12, 13, 14), are corrosion-resistant.

6. Protective net according to claim 1, characterized in that the wire (22), forming a twisted wire strands, cables or wire bundles(11, 12, 13, 14), have a nominal strength of from 1000 to 2200 N/mm2.

7. Protective net according to claim 1, characterized in that curved in the form of a spiral twisted wire strands, cables or reinforcing beams (11, 12, 13, 14) form a diagonal weave (10) with an angle (α) of the rise mainly from 25 to 35°.

8. Protective net according to claim 1, characterized in that it has deepened into the ground fastening elements (15) with clamping diagonal weave to the earth's surface clamping plates and at least on the surface retention and tensile diagonal weave rope (21).

9. A method of manufacturing a protective network of claim 1, wherein the twisted wire strand, rope or wire beam (11, 12, 13, 14) served with a certain angle (α) lifting at least one bending mandrel and bent on is definitely the length (L) around the bending mandrel of approximately 180°, then repeatedly advance along its longitudinal axis by bending mandrel at a certain length (L)curve, respectively, around the bending mandrel 180° up until this twisted wire strand, rope or wire beam (11, 12, 13, 14) does not form a helix shape, and curved in the form of a spiral twisted wire strand, rope or wire beam (11, 12, 13, 14) weave together with the second curved in the form of a spiral twisted wire strand, rope or wire bundle, the second with the third, and this is repeated until until will not be formed network with diagonal weave the desired value.



 

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2 dwg

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2 cl, 2 ex

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5 cl, 2 ex, 4 dwg

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