Protective net, especially for rockfall protection or for verge securing

Abstract

A protective net, especially for rockfall protection or for verge securing, with a diagonal weave, is formed by a three-dimensional mattress-like structure. The same is woven from individual spiral-shaped bent wire strands, wire bundles, wire cables or suchlike, which incorporate two or more wires or wire strands made of steel. It is of great advantage if the wire strands, wire cables, or wire bundles or suchlike are made at least in part from high tensile steel, and if the protective nets can therefore be equipped with very great strength.

1 . Protective net, especially for rockfall protection or for verge securing, which is formed by means of a diagonal weave produced from wires and forming a three-dimensional, mattress-like structure, wherein the diagonal weave is woven from wire strands, from wire bundles, or from wire cables,
 each of the wire bundles or wire cables incorporating two or more wires or wire strands made of steel,   each of the wire bundles or wire cables of the diagonal weave being spiral-shaped and consisting of straight sections that alternate with bent sections, and   in each of the straight sections, the wires or wire strands of the wire bundles or wire cables being twisted one about another.   
     
     
         2 . Protective net according to  claim 1 , wherein the wires, wire strands, wire cables, or wire bundles are made at least in part from high tensile steel. 
     
     
         3 . Protective net according to  claim 1 , wherein the wires, wire strands, wire cables, or wire bundles are flexibly connected with one another at their ends in pairs via loops. 
     
     
         4 . Protective net according to  claim 3 , wherein the wires, wire strands, wire cables, or wire bundles are additionally equipped with at least one loop wound around their own circumference following their bending into loops. 
     
     
         5 . Protective net according to  claim 1 , wherein the wires or wire strands forming the wire cables or wire bundles are corrosion resistant. 
     
     
         6 . Protective net according to  claim 1 , wherein the wires or wire strands forming the wire cables or wire bundles have a nominal strength within a range of 1000 to 2200 N/mm 2 . 
     
     
         7 . Protective net according to  claim 1 , wherein the spiral-shaped, bent wires, wire strands, wire cables, or wire bundles forming the diagonal weave have an angle of inclination (α) of preferably between 25° to 35°. 
     
     
         8 . Protective net according to  claim 1 , wherein a verge securing incorporates the wire weave, fitting elements that can be sunk into the ground with claw plates or other means for holding the weave to the earth surface, and at least one rope on the surface, holding and stretching the weave. 
     
     
         9 . Method for producing a protective net according to  claim 1 , wherein a wire bundle, or a wire cable is introduced at a defined angle of inclination (α) at least up to a spike of a means and bent around said spike in a defined length (L) by approximately 180°, and in that the wire bundle or the wire cable is advanced by the defined length L several times around its longitudinal axis in relation to the spike and bent around the spike by 180° each time until this wire bundle or wire cable has taken on a spiral-shaped form. 
     
     
         10 . Method according to  claim 9 , wherein a spiral-shaped bent wire bundle or a wire cable is woven together with a second spiral-shaped bent wire bundle, or a wire cable, the second with a third, and repeated until the wire weave has reached the desired size. 
     
     
         11 . Protective net formed by means of a diagonal weave produced from individual wires and forming a three-dimensional, mattress-like structure, wherein
 the diagonal weave is woven from wire bundles or from wire cables,   each of the wire bundles or wire cables incorporates two or more of the individual wires made of steel,   each of the wire bundles or wire cables is spiral-shaped and consists of straight sections that alternate with bent sections, and   in each of the straight sections, the wires are twisted one about another.   
     
     
         12 . Protective net according to  claim 11 , wherein the wires are made at least in part from high tensile steel. 
     
     
         13 . Protective net according to  claim 11 , wherein the wire cables or wire bundles are flexibly connected with one another at their ends in pairs via loops. 
     
     
         14 . Protective net according to  claim 13 , wherein the wire cables, or wire bundles are additionally equipped with at least one loop wound around their own circumference following their bending into loops. 
     
     
         15 . Protective net according to  claim 11 , wherein the wires are corrosion resistant. 
     
     
         16 . Protective net according to  claim 11 , wherein the wires have a nominal strength within a range of 1000 to 2200 N/mm 2 . 
     
     
         17 . Protective net according to  claim 11 , wherein the wire cables, or wire bundles forming the diagonal weave have an angle of inclination (α) of preferably between 25° to 35°. 
     
     
         18 . Protective net according to  claim 11 , wherein a verge securing incorporates the wire weave, fitting elements that can be sunk into the ground with claw plates or other means for holding the weave to the earth surface, and at least one rope on the surface, holding and stretching the weave. 
     
     
         19 . Method for producing a protective net according to  claim 11 , wherein a wire bundle or a wire cable is introduced at a defined angle of inclination (α) at least up to a spike of a means and bent around said spike in a defined length (L) by approximately 180°, and in that the wire bundle or the wire cable is advanced by the defined length L several times around its longitudinal axis in relation to the spike and bent around the spike by 180° each time until this wire bundle or wire cable has taken on a spiral-shaped form. 
     
     
         20 . Method according to  claim 19 , wherein a spiral-shaped bent wire bundle or a wire cable is woven together with a second spiral-shaped bent wire bundle or a wire cable, the second with a third, and repeated until the wire weave has reached the desired size.