RU113188U1 - LOAD GRID - Google Patents

Abstract

1. A fence mesh containing interconnected threads of a reinforced barbed tape made of galvanized high-carbon steel wire with a tape of galvanized steel fixed on it by compression with sharp diametrically located piercing-cutting spikes, the threads of a reinforced barbed tape are connected with overlapping staples that the staples are made of galvanized high-carbon steel with a diameter of 5 ± 1.5 mm, and the inner diameter of the staple after compression is 14-18 mm. ! 2. The fence mesh according to claim 1, characterized in that the number of staples in the connecting unit of the mesh is 1 or 2.

Description

The utility model relates to the field of construction and can be used to protect high-security facilities and nuclear hazardous facilities, military facilities, airports, and national economy facilities.

The prior art well-known fence net containing staples, wire strands connected with brackets (JP 200425241 "Net fence" published on 01/29/2004). A barrage made of barbed steel wire in the form of coils of flat spirals installed in two tiers and additionally interconnected by twists of wire (RU 2151996 C1, E41H 11/08 2000 or description RU 44725 UI. E04H 7/04. 2005 g is also known. .)

Also known is a fencing net, taken as a prototype, containing interconnected strands of reinforced barbed tape made of galvanized high-carbon steel wire with a galvanized steel tape fixed to it by crimping, with sharp diametrically located prickly cutting-cutting spikes, and threads of reinforced barbed tape connected by overlapping brackets galvanized steel (RU 2357058 Е04Н 17/04, B21F 29/00. 2006)

The disadvantage of nets and barriers is the short service life of the brackets made of galvanized low-carbon steel 3-5 years, which rust due to climatic factors and their connecting properties are violated, and therefore the reliability of the grid mesh is significantly reduced, there is the possibility of penetration into the protected object. In addition, at present, flat staples up to 2 mm thick are widely used to connect reinforced barbed tape, which withstand tensile forces of not more than 30 kgf.

Using a screwdriver and pliers, you can unbend and remove such a bracket. It is enough to remove three or four staples and you can enter the guarded object.

Technical result

Increasing the service life of connecting brackets up to 20-25 years, increasing the reliability of the connection and the use of the optimal amount of material for the manufacture of brackets.

The technical result is achieved by the fact that the staples are made of galvanized high-carbon steel with a diameter of (5 ± 1.5) mm and the inner diameter of the staple after crimping varies from 14 to 18 mm., In addition, to increase reliability and stiffness (tensile force of at least 300 kgf) connection in one node 2 brackets can be used.

The figure shows the mesh fencing cells which are in the form of a rhombus.

The barrage grid contains threads of reinforced barbed tape 1 connected by an overlap with brackets 2 (the bracket is shown in the figure 1 in the figure). The fence net is fixed at the top and bottom with cables 3.

Fencing mesh

Fastening the threads of reinforced barbed tape with brackets is carried out on the machine.

The machine receives galvanized high-carbon steel wire, a galvanized steel strip with sharp piercing and cutting spikes, and staples with a diameter of 5 ± 1.5 made of galvanized high-carbon steel. The machine is crimped wire with galvanized steel tape. After crimping the threads in a certain order and sequence are connected by brackets. The internal diameter of the bracket after lap reduction varies from 14 mm to 18 mm

The essence of the proposed method is as follows.

An increase in the service life of staples up to 20-25 years and an increase in tensile strength up to 175-180 kgf is ensured by the manufacture of staples from galvanized high-carbon steel with a diameter of the bracket 5 ± 1.5 mm.

To protect objects of special importance, two brackets can be used in the nodes of the fence mesh, while the breaking properties of two brackets increase to 300-320 kgf.

Optimum staple sizes are obtained when, after crimping, the inner diameter of the staple is within 14-18 mm.

If the inner diameter of the staple is reduced to less than 14 mm, the barbed tape may crumple and the staple will become impaired. This will lead to the stress state of the connecting node and its quick failure from exposure to climatic factors (rain, snow, wind). With an increase in the inner diameter of the bracket over 18 mm, the amount of galvanized high-carbon steel with a diameter of 5 ± 1.5 mm increases.

There are 20-25 staples per square meter. If you consider that the length of the fence reaches several kilometers, then the consumption of material on the staples will be obvious.

Claims (2)

1. Barrier mesh containing interconnected strands of reinforced barbed tape made of galvanized high-carbon steel wire with a galvanized steel tape fixed to it by crimping with sharp diametrically arranged stitching and cutting spikes, reinforced barbed tape strands are lapped with brackets, characterized in that that the brackets are made of galvanized high-carbon steel with a diameter of 5 ± 1.5 mm, and the inner diameter of the bracket after crimping is 14-18 mm. 2. The mesh fence according to claim 1, characterized in that the number of brackets in the connecting node of the mesh is 1 or 2.