DE7728529U1 - MACHINING MAT FOR PIT REMOVAL - Google Patents

Description

Dr. R. Fenne GmbH & Co. Eisen- und Metallprodukte KG, Lünsingkuhle, 4270 Dorsten

"Warp mat for the pit lining"

The innovation relates to a warping mat for the pit lining, which is formed from longitudinal and transverse wires firmly connected to one another at their crossing points, the longitudinal wires of each mat are bent over at both ends to form connecting hooks.

Such a device is described in DT-GM 76 32 616, for example. In this known mat are the two hooks of all longitudinal bars are bent at one bar end in the mat plane and at the other bar end perpendicular to the mat plane, so that in this way the end hooks are offset from one another by 90 °. According to this known arrangement, this allows a simple and inexpensive production with little material and labor. Through this connection however, the mat cannot be freely pre-attached and the tensile strength of the mat is also dependent on the tensile strength a single hook, unless, according to a particular embodiment of this known device, two Line wires are combined to hooks. However, this makes both the weight and the total effort for the mat too high.

7728529 01/05/78

The innovation is based on the task of creating a warp mat for underground pit work that can be freely pre-pledged and in which the interconnected mats have a high tensile strength higher than that Tensile strength that a single hook would have.

This object on which the innovation is based is achieved in that the hook of one wire end has its free leg end under the mat level and the hook of the other wire end is bent over the mat level and all wire ends are the same length exhibit.

This measure makes it possible to connect two to one another To connect mats to one another so that a self-supporting, so pre-Pfändbaren mat is created, with now the mats are connected to each other via two hooks, namely each hook of each mat end engages behind a cross wire, according to Another essential feature of the innovation, this last cross wire before the end of the mat has a greater strength than the remaining cross wires.

Finally, according to the innovation, it is also proposed that the two outer wire ends of each mat are bent inwardly in the mat plane, so that the mats are thereby securely connected to one another can be connected without creating free-standing hook ends.

7728529 01/05/78

• t r ι ι

An exemplary embodiment of the innovation is explained below with reference to the drawing.

The drawing shows parts of two interconnected mats 1 and 2, each of these mats made of longitudinal wires 3 and transverse wires 4 consists. Each mat has freely protruding wire ends 5 or 6 at its end, each wire end forming a hook 7 is bent, in which the free leg end 8 is parallel to the actual longitudinal wire 3, i.e. parallel to the protruding wire end is bent. It is essential that the hook 7 of the wire end 5 is bent upwards over the plane of the mat and the opposite hook, which is comparable to the hook 9 of the mat 1, bent down below the plane of the mat is. In this way, each mat has hooks that are bent upwards at one end and downwards at the other end are turned.

The last cross wire before the wire end 5 or 6, i.e. so the cross wires 10 and 11 shown in the drawing have have a larger diameter than the remaining transverse wires 4 and are used to hold the respectively assigned hooks 7 and 9.

By hanging the two mats with the respectively assigned hooks and behind the respectively assigned cross wires 10 and 11 a cantilevered support of the last mat is achieved, i.e. the last mat can be freely pre-attached, on the other hand the tensile

7728529 01/05/78

strength of the interconnected mats in the simplest way considerably compared to the previously known mat connections elevated.

The two outer wire ends 5 of each mat and each mat end are bent slightly inwards, as is particularly clear Fig. 2 shows so that they engage behind the associated line wire of the other mat on the inside of this line wire, so that it is ensured that no free wire ends protruding beyond the lateral mat edges are formed.

7728529 01/05/78

Claims (3)

1. Warping mat for pit lining, which is formed from longitudinal and transverse wires firmly connected to one another at their crossing points, the longitudinal wires of each mat being bent at both ends to form connecting hooks, characterized in that the hook (9) of one wire end (5) with its free thighs below the mat level and the hook (7) of the other wire end (5) is bent over the mat level and all wire ends (5) have the same length. 7728529 01/05/78 • · 2. warping mat according to claim 1, characterized in that the last cross wire (10, 11) in front of the Mattenenrlt. has a greater thickness than the other transverse wires (4). 3. warping mat according to claim 1 and 2, characterized in that in each case the two outer wire ends (5) of each mat are bent inwardly in the mat plane. 7728529 01/05/78